“Lithium Battery” is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. Therefore, lithium batteries have not been used for a long time. With the development of science and technology, lithium batteries have now become the mainstream.
Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable. The fifth generation of rechargeable batteries, lithium metal batteries, was born in 1996, and its safety, specific capacity, self-discharge rate, and performance-price ratio are superior to those of lithium-ion batteries. Due to its own high-tech requirements, only a few companies in a few countries are producing such lithium metal batteries.
Safeguard
After the lithium battery cell is overcharged to a voltage higher than 4.2V, side effects will begin to occur. The higher the overcharge voltage, the higher the risk. When the voltage of the lithium battery cell is higher than 4.2V, the number of lithium atoms remaining in the positive electrode material is less than half. At this time, the cell often collapses, causing a permanent decrease in battery capacity. If you continue to charge, since the cell of the negative electrode is already filled with lithium atoms, subsequent lithium metal will accumulate on the surface of the negative electrode material. These lithium atoms will grow dendrites from the surface of the negative electrode toward the direction of the lithium ions. These lithium metal crystals will pass through the separator paper and short-circuit the positive and negative electrodes. Sometimes the battery explodes before the short circuit occurs. This is because during the overcharging process, the electrolyte and other materials will crack to produce gas, causing the battery shell or pressure valve to swell and rupture, allowing oxygen to enter and react with the lithium atoms accumulated on the surface of the negative electrode. And then exploded.
Therefore, when charging a lithium battery, the upper voltage limit must be set so that the battery life, capacity, and safety can be taken into account at the same time. The ideal upper limit of the charging voltage is 4.2V. There is also a lower voltage limit when discharging lithium batteries. When the cell voltage is lower than 2.4V, some materials will begin to be destroyed. And because the battery will self-discharge, the longer it is left, the lower the voltage will be. Therefore, it is best not to stop when the battery is discharged to 2.4V. During the period when the lithium battery is discharged from 3.0V to 2.4V, the energy released only accounts for about 3% of the battery capacity. Therefore, 3.0V is an ideal discharge cut-off voltage. When charging and discharging, in addition to the voltage limit, the current limit is also necessary. When the current is too large, lithium ions will not have time to enter the cell and will accumulate on the surface of the material.
After these lithium ions obtain electrons, they will produce lithium atom crystals on the surface of the material, which is the same as overcharging, which is dangerous. If the battery casing ruptures, it will explode. Therefore, the protection of lithium-ion batteries must include at least three items: the upper limit of the charging voltage, the lower limit of the discharge voltage, and the upper limit of the current. Generally, in the lithium battery pack, in addition to the lithium battery core, there will be a protective board, which mainly provides these three protections. However, these three protections of the protection board are obviously not enough, and there are still frequent explosions of lithium batteries around the world. To ensure the safety of the battery system, the cause of the battery explosion must be analyzed more carefully.
Cause of explosion
1. Large internal polarization;
2. The pole piece absorbs water and reacts with the electrolyte.
3. The quality and performance of the electrolyte itself;
4. The amount of liquid injected cannot meet the technological requirements when injecting liquid;
5. In the assembly process, laser welding has poor sealing performance, and air leakage when measuring air leakage;
6. Dust and pole piece dust are likely to cause micro short circuits first;
7. The positive and negative plates are thicker than the process range, making it difficult to enter the shell;
8. The problem of liquid injection sealing, poor sealing performance of the steel ball, resulting in air bulging;
9. The shell wall is too thick in the incoming shell material, and the shell deformation affects the thickness;
10. Excessive ambient temperature outside is also the main cause of explosion.
Conductive layer:
Conductive coating is also called pre-coating. In the lithium battery industry, it usually refers to a conductive coating applied to the surface of the positive electrode current collector-aluminum foil. The aluminum foil coated with conductive coating is called pre-coating aluminum foil or coating for short. Layer aluminum foil, its earliest experiments in batteries can be traced back to the 1970s, and with the development of the new energy industry, especially the development of lithium iron phosphate batteries, it has become a hot new technology or new material in the industry.
The conductive coating can effectively improve the adhesion of the pole piece in the lithium battery, reduce the amount of binder used, and significantly improve the electrical performance of the battery. The products of large foreign companies will not be introduced. Let me introduce the only domestic product that is promoted in the market and has independent intellectual property rights-WX112, which is developed and produced by Shanghai Zhongxing Paineng Energy Technology Co., Ltd., a subsidiary of Zhongxingxin. According to the samples received, the technical requirements such as full coating, margins, and gaps can all be achieved. The performance is as follows:
1. Contact resistance decreased by 40%
2. Reduce the amount of adhesive by 50%
3. Under the same magnification, the battery voltage platform increases by 20%
4. The adhesion between the material and the current collector is increased by 30%, and there will be no delamination after long-term circulation
Carbon coated aluminum foil:
Carbon-coated aluminum foil is made of conductive carbon-based composite slurry and high-purity electronic aluminum foil, which is made by a transfer coating process.
Scope of application
Power type lithium battery with fine particle active material
The positive electrode is lithium iron phosphate
The positive electrode is fine particle ternary/lithium manganate
Used for supercapacitors, lithium primary batteries (lithium, lithium manganese, lithium iron, button type, etc.) instead of etching aluminum foil
effect
Suppress battery polarization, reduce thermal effects, and improve rate performance;
Reduce the internal resistance of the battery, and significantly reduce the dynamic internal resistance increase in the cycle process;
Improve consistency and increase the cycle life of the battery;
Improve the adhesion between the active material and the current collector and reduce the manufacturing cost of the pole piece;
Protect the current collector from being corroded by the electrolyte;
Improve the high and low temperature performance of lithium iron phosphate batteries, and improve the processing performance of lithium iron phosphate and lithium titanate materials

The security monitoring system uses optical fiber, coaxial cable or microwave to transmit video signals in its closed loop, and constitutes an independent and complete system from camera to image display and recording. The security monitoring system can reflect the monitored objects in real time, vividly and truthfully, and can replace manual monitoring for a long time in harsh environments and record it through a video recorder. At the same time, the alarm system equipment will alarm for illegal intrusion. At the same time, the alarm system equipment alarms the illegal intrusion, and the generated alarm signal is input to the alarm host, and the alarm host triggers the monitoring system to record and record.
system introduction:
The security monitoring system uses optical fiber, coaxial cable or microwave to transmit video signals in its closed loop, and constitutes an independent and complete system from camera to image display and recording. It can reflect the monitored object in real time, vividly, and truthfully. It not only greatly extends the observation distance of the human eye, but also expands the function of the human eye. It can replace manual long-term surveillance in harsh environments, allowing people to see Everything that actually happened to the monitored site was recorded by a video recorder. At the same time, the alarm system equipment alarms the illegal intrusion, and the generated alarm signal is input to the alarm host, and the alarm host triggers the monitoring system to record and record.
System Components:
Video Security Monitoring System (VSCS) refers to an electronic system or network that uses video detection technology to monitor fortified areas and displays and records on-site images in real time. It mainly includes four parts: front-end equipment, transmission equipment, processing/control equipment and recording/display equipment.
The security system can integrate all the subsystem control equipment in this solution, such as digital video system, anti-theft alarm system, and access control system. On the basis of not affecting the operation of each subsystem, the unified management platform is used to realize integrated interface management, achieve unified operation, unified linkage, unified maintenance, etc., which greatly improves the management efficiency and level of the owner. It can be said that the future integrated development trend of the entire security industry is mainly composed of a security center system, a terminal system and a transmission network.
System parameters:
Image quality level: no less than four of the five image rating levels.
Horizontal resolution: color not less than 400 lines
Gray level: no less than 8
Signal to noise ratio: 40dB
Composite video signal level value: 1VP-P±3dB
security system:
1. Anti-overstepping alarm at the perimeter of the community
The design of the perimeter anti-overstepping alarm system adopts the perimeter anti-overstepping active infrared anti-radiation alarm system, which actively detects, locates and alarms illegal intruders in the surrounding area, and tells the security personnel which pair of shooting areas is happening, and prompts the security personnel to deal with it. . The community adopts a combination of infrared cameras erected on the fence and infrared beams for defense. Combining the site conditions and Party A`s suggestions, the number of shots reached 50 pairs, and the situation of each alarm point will be displayed on the digital map, and the surveillance camera can point to the problem location to view.
2. CCTV surveillance
The main channel of the closed-circuit television monitoring system and the regional closed-circuit television monitoring are multiplexed to alarm when the situation occurs. Outdoor color omnidirectional three-variable cameras are used, cameras with different illuminances are used, and infrared night vision cameras need to be installed in different parts. The design system adopts the hard disk recording system of alarm linkage recording as the alarm image storage, and adopts the large-scale video matrix as the central control system.
3. Intercom and all-in-one card (including home security)
It is mainly aimed at effective management and control of the flow of visitors in residential areas, residential buildings and residents. The peripheral visiting equipment is formed by setting the management center machine and the door machine of the residential building. The indoor machine design of the residents selects the household extension with the networking function. In this way, the functions of the system can be completed and expanded, and the needs of different households can be met and the investment for setting up different system functions can be saved. This extension system can not only meet the visual intercom function, but also realize the function of calling the property management center. The functions that can be realized in the intercom part are: building visual intercom, smart home security, community announcement, photo message, home appliance control, lighting control, three-meter query, community service, home assistant, etc. Full Chinese interface, graphic display, touch screen operation lock control, monitoring, and Hyun ringing, door bell, call door guard, call center, emergency help, wired and wireless zone alarm, MMS sending and receiving, call transfer, care function, mute and do not disturb , Support touch screen operation. The one-card part mainly considers practicality, durability and convenience for users.
System Features:
The remote security monitoring system is based on the digital network as the transmission medium and the core of the network video server. Comprehensive use of digital video processing technology, automatic control, network transmission technology, artificial intelligence and other technologies, not only has the fast video processing capabilities of ordinary security monitoring systems, digital information anti-interference capabilities, and easy to quickly query and record advantages, but also rely on the network , Exploit the advantages of broadband network, and connect the surveillance video center with any point that can be connected to the network through the IP network to achieve the remote, centralized and real-time effect of the ideal closed-circuit surveillance system.
1. The structure is clear and simple: the monitoring host realizes many functions of the video matrix, screen splitter and other equipment in the analog system through the Xiangshi network video centralized monitoring system management software, and realizes the recording function through the computer hard disk, which greatly simplifies the system structure , High integration.
2. Easy management and application: As the digital monitoring system is based on computers and network equipment, most of the system control and management functions are realized by computers, and there is no need to simulate many complicated equipment in the system, which reduces the management work intensity of operation and maintenance personnel.
3. Powerful operation functions: multiple display modes; multi-screen intelligent switch round tour; multiple early warning modes; multiple recording methods such as real-time, timing, alarm trigger, and start and stop at any time; picture capture printing; intelligent fast video playback query, etc. Wait.
4. Simple monitoring and viewing: Because the fully digital network video centralized monitoring mode is based on the characteristics of the network, there is no need to increase equipment investment. The remote or local monitoring center on the network can monitor, record or replay one or more monitoring scene images in real time, authorized The Internet-connected computer can also realize the monitoring function, avoiding the inconvenience and lack of supervision and management caused by the geographical interval.
System layering:
For the security monitoring system, according to the different functions of each part of the system, we divide the entire security monitoring system into seven layers-presentation layer, control layer, processing layer, transmission layer, execution layer, support layer, and acquisition layer. Of course, due to the increasing integration of devices, for some systems, some devices may exist in the system as multiple layers at the same time.
Installation principles:
With the enhancement of security awareness, video surveillance systems are slowly entering the homes of ordinary people. Video surveillance solutions are also emerging in endlessly, so what principles need to be followed when installing a surveillance system? The following 8 surveillance installation principles must first be considered when installing a surveillance system:
1. Real-time: The real-time of the monitoring system is particularly important. It is precisely because of the real-time nature of the monitoring system that the monitoring system is so necessary.
2. Security: The monitoring system has safety precautions and confidentiality measures to prevent illegal intrusion into the system and illegal operations.
3. Scalability: The monitoring system equipment adopts a modular structure. The system can easily and flexibly expand in hardware and software when the monitoring scale, monitoring object, or monitoring requirements are changed, that is, there is no need to change the network structure and main functions. Hardware and software equipment.
4. Openness: The monitoring system follows the principle of openness. The system provides interfaces and tools in software, hardware, communications, networks, operating systems, and database management systems that comply with international standards, so that the system has good flexibility and compatibility. , Scalability and portability. The entire network is an open system, compatible with the products of many monitoring manufacturers, and can support secondary development.
5. Standardization: The equipment and technology used in the monitoring system comply with international standards. This can give you a peace of mind.
6. Flexibility: The monitoring system has flexible networking methods and flexible system function configuration, which can make full use of the existing video monitoring subsystem network resources. The system integrates other subsystems into it, which can meet the business needs of different monitoring units, with comprehensive software functions and easy configuration.
7. Advancement: The monitoring system is as advanced as possible under the premise of satisfying reliability and practicability. The entire system remains advanced for ten years after its completion, and the equipment and technology used in the system can adapt to future development and can be easily upgraded. It will become an advanced security system that adapts to future development, has high reliability, good confidentiality, easy network expansion, strong connection data processing capabilities, and easy system operation and operation.
8. Practicability: The video surveillance system has the ability and level to complete the functions required in the project. The system conforms to the requirements of relevant domestic and foreign regulations that are actually required by this project, and is easy to implement and easy to operate. From the user’s point of view, make full use of existing resources, minimize system costs, and enable the system to have a higher cost-performance ratio.

The intelligent lighting system is a system for intelligent control and management of lighting. Compared with traditional lighting, it can realize the management of soft start, dimming, one-key scene, one-to-one remote control, and full on and off of partition lights, and it can be used Remote control, timing, centralized, remote and other control methods, and even use a computer to perform advanced intelligent control of the light, so as to achieve the energy-saving, environmentally friendly, comfortable and convenient functions of intelligent lighting.
System functions
1) Centralized control and multi-point operation function: the terminal in any place can control the lights in different places; or the terminal in different places can control the same light. Use various methods to manage the lighting control system, touch screen, network, PDA, telephone so that users can use the easiest way to control the equipment in their room at any time and any place (even in the swimming pool).
2) Soft start function: When the light is turned on, the light gradually changes from dark to bright. When the light is turned off, the light gradually changes from bright to dark to prevent sudden changes in brightness from irritating the human eyes, giving a buffer to the human eyes and protecting the eyes. And avoid the impact of high current and high temperature mutation on the filament, protect the bulb and prolong the service life.
3) Light and shade adjustment function: Whether you are meeting guests, watching TV, listening to music, or with your family, or thinking alone, or even tasting whiskey, adjusting the brightness of different lights can create comfort and tranquility for you , Harmonious, warm atmosphere, deeper experience of life, soft light can give you a good mood, less and dark light helps you think, and more and bright light makes the atmosphere more enthusiastic. These operations are very convenient. You can press and hold the local switch to adjust the brightness and darkness of the light. You can also use a centralized controller or remote control to adjust the brightness of the light by pressing the key.
4) Full-on, full-off and memory function: The lights of the entire lighting system can realize the functions of one-key full-on and one-key full-off. When you fall asleep or leave home, you can press the all-off button once, and all the lighting equipment will be turned off. It saves you the trouble of running around all the rooms.
5) Timing control function: through the schedule management module, the timing of the lights can be defined on and off. For example, at 7:00 every morning, slowly turn on the lights in the bedroom to a suitable brightness; in the middle of the night, automatically turn off all lights.
6) Scene setting: For fixed-mode scenes, you don’t need to switch and dim the lights one by one. You can control a group of lights by pressing a key after only one programming. This is the scene setting function. Only one touch operation can realize the conversion of multiple lighting scenes; you can also get the desired combination of lighting and appliances, such as home mode, away from home mode, meeting mode, dining mode, theater mode, couple night Talk, night mode, etc.
7) Local switch: you can directly control the local lights according to your usual habits; according to your needs, the switch can be arbitrarily set to control objects, such as the button in the hall can be used to turn off all the lights; this way, when you leave home , All lights can be turned off with a single tap, which is energy-saving, safe and very convenient.
8) Infrared and wireless remote control: In any room, use an infrared handheld remote control to control the on-off state and dimming state of all networked lamps (no matter whether the lamps are in the room); you don`t need to turn on the lights after entering the room. Before entering any room, you can use the remote control to turn on the lights. From then on, you no longer have to look for light switches in the dark; depending on the size of the house, the model of the remote control is also different, such as: four-position remote control is applicable In two bedrooms and one living room, the six-position remote control is suitable for three-bedroom and one living room. In addition, there are eight, ten, and twelve-position remote controls. The sixteen-position remote control is suitable for duplex and villa use.
9) Telephone remote control: through any ordinary telephone or mobile phone, remote control of lights or scenes can be realized. This function can be used to simulate the light situation of the owner at home before returning at night to confuse possible thieves;
10) The lighting system also has a power-off self-locking function, that is, when your home is powered off, all the lights will remain off after the power is received. The intelligent lighting system can also be linked with the security system. When an alarm occurs, the lights on the balcony of your home will keep flashing and alarm.
main feature:
1. Through the remote control, you can easily manage all the smart switches, sockets, and curtains in the home to achieve wireless control and scene control; the scene arrangement is completely set according to the user’s hobby, no other tools are required, and the remote control panel is freely arranged on the remote control panel, which is convenient and fast , Can be adjusted anytime and anywhere as needed.
2. The telephone remote voice control can be realized through the telephone remote controller, and the control equipment can be a fixed telephone or a mobile phone. The super power of Botron’s home intelligence enables you to conveniently manage home automation equipment no matter where you are. It is convenient and practical, and reflects the best combination of technology and humanities.
3. The timing control of the light can be realized through the scene remote control.
4. The dimming and dimming state memory function of the smart switch is energy-saving and convenient for scene setting.
5. The radio frequency signal can penetrate the wall, so it can be used no matter which room in the home. Performance characteristics: Control street lamp switch, brightness adjustment, current, voltage collection, theft alarm, etc., and reserve functions such as temperature collection and lamp pole tilt detection.
The street light manager is divided into modular type (in the built-in lamp) and plug-in type (in the built-in lamp pole), which can meet the needs of street lamp enterprises and engineering enterprises respectively.
1. Communication connection through wireless ad hoc network, real-time online collection of information;
2. High-performance embedded microprocessor technology, advanced energy measurement dedicated chip, large-capacity memory technology; 3. Self-diagnosis and self-recovery functions;
4. Power-off data retention function;
5. Remote or on-site automatic dimming realizes energy-saving control of street lights on and dark lights;
6. The wireless routing function realizes the relay function of communication.
At present, the degree of informatization of urban road lighting management in my country is still relatively low. System management software based on the Internet of Things and cloud computing provides a set of comprehensive solutions for the informatization construction of street lighting management departments.
1. Automatic street lamp inspection: The monitoring center can perform automatic inspection on street lamps installed with street lamp monitors, report faults and automatically generate repair reports;
2. Street lamp inspection and control: It can turn on, turn off, adjust the brightness and other functions of street lamps installed with street lamp monitors in real time, or preset control schemes to make street lamps light up in accordance with the preset schemes.
3. Equipment management: realize computerized information management of street lamp equipment such as light poles, lamps, wires, control boxes, transformers, electric meters, switches, monitors, etc., with functions such as equipment installation, scrapping, maintenance, replacement, and storage.
4. Multimedia function: With picture library management function and video management function, the management is more intuitive, visualized and friendly.
5. GIS geographic information system: It has the functions of terrain, facility space, administrative divisions, blocks, roads, buildings, water systems, pipe ditches, street light lines, control lines, and laying conditions.
6. Auxiliary analysis module: It has the functions of statistics, reports, analysis, query, load calculation, real-time meter reading, electricity consumption analysis, cable length calculation and so on.
7. Web information publishing module: realize seamless connection with website and carry out remote management function.
The research report shows that ultra-low power consumption intelligent lighting system is expected to become one of the main development trends in the lighting industry.

Gantry is a new type of small lifting gantry developed in accordance with the daily production needs of small and medium-sized factories (companies) for handling equipment, warehouses importing and exporting, lifting and repairing heavy equipment and material transportation. It is suitable for manufacturing molds, auto repair factories, mines, civil construction sites and occasions where lifting is required. Commonly used in building construction, it is also used as material transportation and construction personnel to use up and down to realize hoisting machinery. It can reduce manpower, reduce production and operation costs, and improve work efficiency.
advantage:
The biggest advantage of the mobile gantry is that it can be moved in all directions, can be quickly disassembled and installed, and has a small footprint. It can be transferred to another site for installation and use with a miniature car. The width and height can be adjusted in stages, and the steel structure is reasonably designed, which can bear the weight from 100 to 5000 kg. Especially suitable for the installation, handling and debugging of workshop equipment. Loading and unloading of cargo on cars, hoisting large engine parts in auto repair workshops, etc.
specification:
There are two main specifications for small lifting gantry: one is the gantry that moves on the ground in all directions, with brake bearing wheels that can move on the ground, and is suitable for lifting objects on the ground; the other is to use steel rails to be fixed on the floor or On the beam, hoisting is realized by electric or manual hoist. It can reduce manpower, reduce production and operation costs, and improve work efficiency.
characteristic
1. Equipped with self-lifting device, erection and disassembly can be completed independently by the working mechanism set by itself. The height increases as the building rises. The erection is labor-saving and low-cost.
2. Adopting the attachment rod to attach, no need to hold the wind rope, which improves the construction conditions.
3. When erecting and disassembling, there are always two uprights connected into one body, and the work is rated as stable, safe and reliable.
4. The manual hoist hoist self-lifting platform is adopted, and the standard section is installed with a squeegee, so the labor intensity is low.
5. The rope-breaking safety protection device is adopted. Once the rope is broken for some reason, the pallets set on both sides of the gondola will jam the gondola in the air and prevent the accident of the gondola falling to the ground.
Operating procedures:
1. After the gantry operation (assembly) is completed, a load test hoist should be carried out; the test hoist is divided into static load and dynamic load, and the operation capacity, carrying capacity, stability and reliability of each system are checked.
2. When the gantry is running, it must be parallel and stable without twisting it.
3. Overload use is strictly prohibited.
4. There should be a dedicated person for unified command during operation, and other personnel should have a clear division of labor; determine a unified contact signal.
5. In the event of a power outage or other special circumstances during operation, heavy objects should be dropped to the ground and not suspended in the air.
6. It is strictly forbidden to stand under the gantry and lifting heavy objects.
7. It is forbidden to stand on the gantry when it is running.
8. The erection and use of gantry and derrick must meet the requirements of the industry standard “Safety Technical Code for Gantry and Derrick Material Hoist” (JGG88-2010).
① The distance between the vertical rod and the longitudinal horizontal rod shall not be greater than 1m. The bottom end of the vertical rod shall be placed with an iron pier, and the backing plate shall be tamped.
② Scissors should be erected on the outer sides of the derrick all the way to the top, and the angle between the scissor struts and the ground is 60°.
③ The spacing of the horizontal horizontal rods of the platform shall not be greater than 1m. The scaffold must be laid flat and tightly. Double horizontal horizontal rods shall be used when overlapping the ends. The ends of the plates shall exceed the horizontal horizontal rods by 15cm during overlap. Each layer of the platform shall be equipped with a protective body. Bars and toe boards.
④ The two poles should be connected with butt fasteners, and the cross points must be connected with fasteners, and they must not be tied.
⑤ The sky-wheel frame must be erected with double sky-wheel woods, and piled steel pipes or eight-shaped poles should be added and fastened with fasteners.
⑥ Assemble the triangular column gantry, and weld flanges at both ends of each column. When assembling the tripod frame, it is necessary to check that the welded joints of each component are firm, and the bolts of each node must be tightened.
⑦ The two triangular uprights should be connected to the ground beam. The bottom of the ground beam should have anchor iron and be buried in the ground to prevent sliding. When the ground beam is buried, the foundation should be flat and compacted.
⑧ At the entrance of each floor, an unloading bridge platform should be erected, two guardrails should be erected on both sides of the bridge platform, and a dense mesh safety net should be erected, and a horoscope should be erected at the lower entrance of the bridge platform.
⑨ Derrick and triangular column gantry are strictly prohibited from contacting electrical equipment, and reliable insulation protection measures should be provided. When the height is above 15m, there should be lightning protection equipment.
⑩ The derrick and gantry must be equipped with safety protection devices such as ultra-high limit, broken rope insurance, mechanical, manual or interlock positioning brackets.
⑪ 1 set of cable wind ropes should be installed at the height of l0~l5m, and 1 group shall be added for every 10m increase, 4 in each group. The cable wind rope shall be used with steel wire ropes with a diameter of not less than 12.5mm. Ground anchors shall be buried in accordance with the regulations. On objects such as trees, telephone poles, and components. It is also forbidden to use other bars to adjust the length of the wire rope.
⑫ A safety shelter with a length of not less than 2m should be set up on one side of the feed inlet of the gantry and the first layer of the derrick, and sealing measures must be taken on the other three sides. Safety gates must be installed at each level of unloading platform and the entrance and exit of the cage (pan), and no people are allowed to ride in the cage (pan) during operation.
⑬ The guide pulleys of the gantry and derrick must be individually anchored firmly, and the wire ropes from the guide pulley to the drum of the winder shall be shielded at all passages.
⑭ The vertical distance between the sky wheel and the loading platform of the highest floor should not be less than 6m, so that the vertical distance between the highest position of the lifting cage (pan) and the sky wheel should not be less than 2m.
Traffic gantry
Traffic gantry is a kind of door-frame type shelf used for road traffic. Its two columns are like coiled dragon columns and used for road traffic, so the image is called traffic gantry.
The types of traffic gantry can be divided into: traffic speed limit gantry, traffic monitoring gantry, road Traffic Sign gantry, LED guidance screen traffic gantry.

The basic function of the traffic gantry is to limit the maximum height of vehicle traffic to ensure the safety of traffic. According to the different conditions and functions of the traffic gantry, different functions can be added on the basis of the function of height limitation to play more roles. For example: speed limit and height limit, height limit guidance, height limit monitoring, and height limit traffic information promotion.

Listed companies in Jiangsu Province ask the “Circle of Friends” for advice on the new strategy of “going out”
Chase global business opportunities and build more multinational companies
The “Belt and Road” circle of friends continues to expand
Since the beginning of this year, although the two-way capital flow of investment in the United States has declined year-on-year, the amount of Chinese contracted investment newly registered in Jiangsu for overseas investment in the first three quarters has increased by 18% year-on-year. According to a person from the Jiangsu Branch of the State Administration of Foreign Exchange, overall, the year-on-year increase in investment remittances from Jiangsu enterprises to Southeast Asian countries was higher than the overall level, and the scale of capital remittances from traditional labor-intensive industries increased significantly year-on-year.
According to reports, the top five industries for overseas investment in our province this year are special equipment manufacturing, business services, capital market services, computer, communications and other electronic equipment manufacturing, as well as railways, ships, and other electronic equipment manufacturing industries. Aerospace and other transportation equipment manufacturing. The total amount of remittance was 1.5 billion US dollars, accounting for 54% of the total amount of remittance. Labor-intensive industries, including textiles, clothing, furniture, electronic products and other enterprises, have remitted 500 million U.S. dollars, a sharp increase of 123% year-on-year.
Investment along the [Belt and Road” has increased significantly. Tan Liang, a partner of Deloitte China, said that the [Belt and Road Initiative” is becoming more international and inclusive, and is no longer limited to developing countries. Advanced economies will usher in new opportunities and the participation of the private sector will increase significantly; [The Belt and Road Initiative” Transition to high quality, increased project transparency and reduced risks; “One Belt One Road” opportunities will continue to expand along the industrial layout and geographic space, and the “Digital Silk Road” will promote the development of scientific and technological projects.
More and more developed countries have joined the “Belt and Road” circle of friends. “North Rhine-Westphalia is an important node of the’Belt and Road Initiative’, and it is the state that attracts the most Chinese investment companies among the 16 federal states in Germany. For example, companies from Jiangsu Xugong Group, Cobos, Hengrui Pharmaceuticals, etc. have already deployed in Germany. “The representative of the representative office of North Rhine-Westphalia in Nanjing, Wang Xiaodong, introduced that from 2011 to 2012, XCMG acquired and controlled two companies in the same industry in Germany. 1,200 people, cooperated with local top enterprises and universities, and achieved breakthroughs in key technologies.
Listed Soviet enterprises to accelerate global layout
From 2007 to 2009, Shagang, together with other domestic companies, successively invested in Australia’s ABM company and so on. At present, Shagang is actively deploying the big data industry to achieve high-quality development of enterprise transformation.
As a robot research and development company, Estun pays special attention to the development of new technologies. “Since its listing in 2015, Estun has continued to seek overseas investment opportunities, with acquisitions in Italy, Germany, the United Kingdom, and the United States. This year, it is acquiring German century-old welding giant CLOOS. Welding robots account for about 30%-40% of the robot field. In the future, Estun`s market share will enhance Estun`s competitiveness in the global robotics field.” said Yuan Qin, deputy general manager of Estun Automation. In 2017, Estun successively acquired 100% of the shares of Trio Technolog in the United Kingdom, 30% of the shares of Barrett Technology, a US high-tech company, and 50.01% of the shares of M.A.i., Germany, to carry out the layout of the entire industry chain and provide support for the stable development of the company.
It is necessary to practice “internal strength” but also government support
Facing the opportunities and challenges of “going out”, how can companies grasp the opportunities and enhance their risk prevention and identification capabilities? Deloitte’s survey on Chinese companies’ outbound investment found that “risk, supervision, and talent” are the three main issues facing overseas investment challenge.
Yuan Qin concluded from past acquisition experience that family businesses have a very strong desire for brand continuation; European and American companies have strong legal awareness and low financial risks; there are cultural differences in different countries, and intermediary agencies are necessary. “Before operating a project, you must have a clear understanding of the local legal environment; focus on the advanced nature of global technology, and do not acquire a technology that has been eliminated; it is best to focus on companies that are related to the main business and have collaborative benefits, because the cross-banking is very Difficult; an international acquisition team is very important; you must be respected by your opponents in the later integration.”
“Whether state-owned or private enterprises,’going out’ is a process of marketization. Many foreign companies don’t know much about the country. How domestic companies use local intermediaries is very important, such as using local media to speak out.” Morgan Stanley Hua Said Cheng Xiuwen, deputy general manager of Xin Securities.
“Overseas communication and channel building require investment banks, and the integration of funds requires professional financial institutions.” said Zhou Rong, vice president of Wutongshu Capital. How to face policy risks and transaction risks is a well-informed process and an accumulation of experience. Therefore, it is necessary to choose experienced partners.
Enterprises “going out” also cannot do without the support of government departments. “Improve the level of facilitation and continue to optimize the business environment; implement classified guidance to further guide and standardize overseas investment; deepen capital financing, improve financial services, and promote the use of renminbi abroad; strengthen market communication, and do a good job in evaluating and predicting the situation “The provincial foreign administration bureau said.

The LED module is a product composed of LEDs (light emitting diodes) arranged together according to a certain rule and then packaged together with some waterproof treatments.
LED module is a widely used product in LED products, and there are also great differences in structure and electronics. The simple thing is to use a circuit board and housing equipped with LEDs to become an LED module. With some control, constant current source and related heat dissipation treatment make LED life and luminous intensity better. It is mainly used to display the night effect of advertising fonts (acrylic, blister) and logos. It uses text or logos as the medium and is installed on the roof or wall of buildings. It can not only express the logos daytime effect, but also use LED as a light source. , Show another effect at night, coupled with LED lighting application control system, dynamic video control of text or logos, in some places with a strong entertainment atmosphere, LED light source modules have become the best way for companies to show their self-image. One of the important choices Now we mainly give a detailed description of the parameters of the LED module:
(1) Color
This is a basic parameter, and different colors are used in different occasions. According to the color type, it can be divided into three types: single-color, seven-color, and full-color single-point control. A single color is a single color and cannot be changed. Just plug in the power and it will work. Colorful means that the entire series of modules can only be of the same color, and can not achieve different colors of a single module. Simply put, all modules can only achieve the same color at the same time, and different times can be one of the seven colors. Between changes. Full-color single point means that the color of each module can be controlled, and the effect of displaying pictures and videos can be achieved when the number of modules reaches a certain level. Seven-color and full-color single points need to add a control system to achieve the effect. We will introduce the selection and application of the control system in detail in the control system chapter.
(2) Voltage
This is a very important parameter. At present, 12V low-voltage modules are more common. When connecting the power supply and the control system, be sure to check the correctness of the voltage value before powering on, otherwise the LED module will be damaged.
(3) Working temperature
That is, the temperature at which the LED works normally. Normally, it is between -20℃~+60℃, and special treatment should be carried out if the requirement range is relatively high.
(4) Light emitting angle
The light-emitting angle of the LED module without lens is mainly determined by the LED, and the different light-emitting angles of the LED are also different. Generally, the light-emitting angle of the LED provided by the manufacturer is the angle of the LED module.
(5) Brightness
This parameter is a parameter that people pay more attention to. The brightness is a more complicated problem in LED. The brightness we usually say in LED modules is usually luminous intensity and lumen. In low power, it is usually called luminous intensity (MCD). , In high-power, it is usually said that the lumen (LM). The lumen of the module we are talking about is just adding the lumen of each LED. Although it is not very accurate, it can basically be seen. Meet the requirements, haha, personal opinion!
(6) Waterproof grade
This parameter is very important if you want to use the LED module outdoors. This is an important indicator to ensure that the LED module can work outdoors for a long time. Usually in the open air, the best waterproof rating should reach IP65
(7) Dimensions
This is relatively simple, which is commonly referred to as the length and width of high dimensions.
(8) The maximum length of a single connection
We use this parameter more when doing large-scale projects. It means the number of connected LED modules in a series of LED modules. This is related to the size of the connecting wire of the LED module. It should also be customized according to the actual situation.
(9) Power

An empirical formula for the power of LED modules: LED module power = single LED power ⅹ LED number ⅹ 1.1.

Solar energy lamps have gained such rapid popularity because they do have many incomparable advantages compared with ordinary lamps.
Solar lights use sunlight as energy source, solar panels charge the battery during the day, and the battery powers the light source at night. There is no need for complicated and expensive pipeline laying. The layout of the lamps can be adjusted arbitrarily. It is safe, energy-saving and pollution-free, and does not require manual operation. The work is stable, reliable and economical. The electricity bill is maintenance-free.
1. Green and energy saving
The biggest advantage of solar lights is to save energy, which is why the public are more willing to accept this new product. This product that can convert sunlight in nature into its own energy can indeed reduce a lot of electricity consumption. Now that the construction of the city has been developed, the investment in street lights has also increased. The application of solar lights saves a considerable amount of electricity for the country every day.
2. Safe, stable and reliable
It is very safe. There were a lot of hidden dangers of urban street lights. Some were due to substandard construction quality, and some were due to aging materials or abnormal power supply. However, it must be admitted that the street lights supplied with electricity do provide people Has brought a certain bad influence in his life. The solar lamp is a product that does not need to use alternating current. It uses a high-tech battery that can absorb solar energy and automatically convert it into the required electrical energy. It has a very high safety performance.
Three, green and environmental protection
Many people will wonder whether this product using solar energy will produce some polluting elements during the conversion process. It is scientifically proven that the solar lamp does not release any elements that will pollute the environment during the entire conversion process. Moreover, there is no radiation and other problems, and it is a product that fully conforms to the current concept of green environmental protection.
Fourth, durable and practical
In fact, the quality of many electric street lamps is not good. Because they are exposed to the air for a long time, and are exposed to severe weather such as wind and sun, their wiring, lampshades, and even light bulbs will be greatly affected. At present, this kind of solar lamp developed with high technology and technology, the solar cells used are all made with good technology that can ensure that the performance will not be reduced after more than 10 years of use. Some good-quality solar modules can even be used. Power generation for more than 25 years.
Five, low maintenance costs
With the continuous expansion of urban construction, many remote areas also have equipment such as solar lights. By then, in those relatively remote areas, if there are problems in power generation or transmission, the maintenance costs are very high, not to mention Solar lights have only become popular in recent years, so we can often see solar street lights on the roads in the country are always on very economically. But now this kind of solar street lights only need to be inspected within a fixed time, you can refer to “Solar street lights need to be checked after installation” maintenance is a rare thing, and compared with ordinary street lights, the maintenance cost of solar lights Very cheap.

The five major advantages of solar lights will inevitably make solar lights a favored product for outdoor lighting. I believe people must have a new understanding of this new type of light. Now the technology of solar lights is still being constantly improved, and people`s lives will continue. Enriched by this high-tech product.

1.1 Check the electrical circuit diagram of the station yard before the street lamp maintenance, and find the street lamp circuit to be overhauled. 1.2 Street lamps Station street lamps can be roughly divided into two types according to their height. One is the 8m street lamp that needs to be lifted by the vehicle to lift the platform, and the other is the 3.5m street lamp. The bamboo ladder used for climbing should be prepared during maintenance. 1.3 The specific operation steps for the overhaul of the 8m high street lamp are as follows: 1.3.1 First listen to the description of the operating personnel about the street lamp is not on, and generally make a preliminary judgment on the street lamp is not on; 1.3.2 Go to the power distribution room and find the street lamp control switch, Close the street light switch to check which street lights are bad. Turn off the street light switch and turn on the street lights of each phase in turn to determine which line the faulty street light is on; 1.3.3 After finding the faulty line and the faulty street light, come to the job site; 1.3.4 Underground operation: After entering the job site, The person in charge of the scene must get off the vehicle to observe the situation on the scene, and then instruct the operating members to divide their jobs, and at the same time place warning signs, delineate the scope of work, and guard the operation of the guardian; 1.3.5 When the lower outriggers of the aerial work truck support the body, the site is responsible One must check the support of the outriggers. The support should be stable, firm, and free of sag. Check that the platform footboard is intact and undamaged; 1.3.6 The maintenance personnel should first check whether the light bulb is illuminated and whether the light is normal before repairing. The dazzling white light may cause the voltage to be too high; the dim light may cause the voltage to be too low. At this time, use a multimeter to measure whether the voltage of the junction box cable is normal; 1.3.7 For the street lamp with the rectifier at the bottom, first open the street lamp junction box to see if the trigger is cracked, see if the rectifier has insulating medium overflow, and see if the capacitor is cracked or burnt. If the above situation occurs, the power supply should be disconnected, and the prepared trigger, rectifier or capacitor should be replaced; 1.3.8 If the bulb of the street lamp does not light up, check whether the cable down-conductor, insurance, and neutral connector are well wired and whether there is Traces of electric discharge and burnt. Gently shake the wiring at all the connections below to see if there is any discharge; 1.3.9 Use a test pencil to test if both ends of the fuse are live, and it is normal. If there is no electricity, measure the cable voltage; change the fuse. If the fuse is burned at this time, it means there is a short circuit in the front part of the rectifier, and you can switch on the light wire; 1.3.10 Disconnect the neutral wire connector and measure whether the neutral wire is live. The power is normal, and the wiring is restored. No electricity or low voltage due to induction, indicating an open circuit in the middle, switch on the light wire; 1.3.11 The rectifier is 8 meters high on the street lamp, and the lamp holder needs to be climbed; 1.3.12 High-altitude part: the driver of the climber operates the folding arm of the aerial work vehicle Before, the person in charge of on-site work must check or inquire about the condition of the driver`s folding arms; check the surrounding overhead lines, structures and other high-altitude conditions; check and urge the climbers to correctly wear helmets, protective clothing, insulating gloves, fasten seat belts, and wear necessary repairs Lamp tools and materials. After the four climbing brackets of the vehicle are erected, perform the climbing operation; 1.3.13 After climbing, the maintenance personnel first observe whether the glass bulb mirror surface of the bulb is white, whether there is black precipitation, and whether the thread at the bottom of the bulb is cracked, look inside the lamp cap Whether the spring is in poor contact due to loss of elastic surface, and whether there is a discharge phenomenon, see whether the trigger is cracked. Check whether the rectifier has an overflow of insulating medium and whether it does not match the power of the bulb used. Check whether the capacitor is cracked or burnt 1.1 Check the electrical circuit diagram of the station yard before maintenance, and find the street light circuit to be repaired. 1.2 Station street lights are roughly divided into two types according to their heights. One is the 8m street lamp that needs to be lifted by the vehicle to lift the platform, and the other is the 3.5m street lamp. The bamboo ladder used for climbing should be prepared during maintenance. 1.3 The specific operation steps for the overhaul of the 8m high street lamp are as follows: 1.3.1 The street lamp first listen to the description of the street lamp is not on by the operator, and generally make a preliminary judgment on the street lamp is not on; .3.2 Go to the power distribution room and find the street lamp control switch, Turn on the street light switch to see which street lights are bad. Turn off the street light switch and turn on the street lights of each phase in turn to determine which line the faulty street light is on; 1.3.3 After finding the faulty line and the faulty street light, come to the job site; 1.3.4 Underground operation: After entering the job site, The person in charge of the scene must get off the vehicle to observe the situation on the scene, and then instruct the operating members to divide their jobs, and at the same time place warning signs, delineate the scope of work, and guard the operation of the guardian; 1.3.5 When the lower outriggers of the aerial work truck support the body, the site is responsible One must check the support of the outriggers. The support should be stable, firm, and free of sag. Check that the platform footboard is intact and undamaged; 1.3.6 The maintenance personnel should first check whether the light bulb is illuminated and whether the light is normal before repairing. The dazzling white light may cause the voltage to be too high; the dim light may cause the voltage to be too low. At this time, use a multimeter to measure whether the voltage of the junction box cable is normal; 1.3.7 For the street lamp with the rectifier at the bottom, first open the street lamp junction box to see if the trigger is cracked, see if the rectifier has insulating medium overflow, and see if the capacitor is cracked or burnt. If the above situation occurs, the power supply should be disconnected, and the prepared trigger, rectifier or capacitor should be replaced; 1.3.8 If the bulb does not light up, should check whether the cable down-conductor, insurance, and neutral connection are well wired and whether there is discharge , Burn marks. Gently shake the wiring at all the connections below to see if there is any discharge; 1.3.9 Use a test pencil to test if both ends of the fuse are live, and it is normal. If there is no electricity, measure the cable voltage; change the fuse. If the fuse is burned at this time, it means there is a short circuit in the front part of the rectifier, and you can switch on the light wire; 1.3.10 Disconnect the neutral wire connector and measure whether the neutral wire is live. The power is normal, and the wiring is restored. If there is no electricity or the induction shows low voltage, it means that the middle is open, and the lamp wire should be switched on; 1.3.11 The rectifier is 8 meters high in the street lamp, and the lamp holder needs to be ascended; 1.3.12 The high-altitude part of the street lamp: the driver of the climber operates the aerial work vehicle to fold In front of the arm, the person in charge of on-site work must check or inquire the driver`s folding arm status; check the surrounding overhead lines, structures and other high-altitude conditions; check and urge the climbers to correctly wear helmets, labor insurance clothes, insulated gloves, fasten seat belts, and wear necessary Repair tools and materials. After the four ascending brackets of the vehicle are erected, perform the ascending operation; 1.3.13 After ascending, the maintenance personnel should first observe whether the bulb glass mirror is white, whether there are black deposits, and whether the thread at the bottom of the bulb is cracked. Whether the inner spring is in poor contact due to the loss of elastic surface, and whether there is a discharge phenomenon, see whether the trigger is cracked. Check whether the rectifier has an overflow of insulating medium and whether it does not match the power of the bulb used. See if the capacitor is cracked or burnt.

What are the six core advantages of solar street lights? I will introduce to you, the main contents are as follows:

1. Environmental protection

Compared with traditional street lights, solar street lights mainly rely on sunlight during the day to convert into electricity and release electricity for lighting at night. No other energy sources are used at all, and solar energy is recognized as the most environmentally friendly energy source in the world. Therefore, the pollution index of solar street lights is almost 0 in terms of pollution. The only thing that can pollute is the battery. However, under normal circumstances, the probability of a battery polluting the environment is very low, and it will be recycled when it cannot be used.

2. Security

City circuit lights generally use 220v or 380v voltage for power supply and lighting. If the city circuit lights are damaged or malfunctions, there will be a risk of leakage or fire. The 12-24v low-voltage power supply used by solar street lights has stable voltage and reliable operation without any safety hazards.

3. Energy saving

The energy supply of Solar Street Light manufacturers is sunlight. Solar energy is an inexhaustible energy source for us humans. Ordinary city circuit lights consume a lot of live energy in order to supply night lighting because of the AC power used by them.

4. Long-term investment is low

From the current point of view, if the price of buying city circuit lights is much lower than the price of solar street lights, the secondary or tertiary investment of city electricity will be very large, such as control boxes, cables, engineering, operating electricity costs, maintenance, etc., while solar street lights A one-time investment, no maintenance cost, and the cost can be recovered in about 2 years.

5. Easy to install

When installing solar street lights without wiring, the construction volume is extremely low. There is no need for trenching and burying, no need to build power stations around, just install the cement base and fix it with stainless steel. Even the integrated solar street lights can be installed on existing poles or walls. The installation process will not take more than 20 minutes, and you can install a lot of them in one day.

6. Wide range of installation and application

Solar street light manufacturers are almost free from geographical restrictions when installing solar street lights. Solar street lights can be installed in mountainous areas, grasslands and fields, wherever there is sunshine. It is especially suitable for green land landscape lighting equipment, high-end residential and outdoor lighting, tourist attractions and coasts. Landscape lighting and decoration, industrial development zone, industrial and mining enterprise street lights, and outdoor lighting of universities and colleges.

Abstract: 2019 is known as the first year of China’s 5G commercial use. With the widespread promotion of 5G networks and smart cities in China, smart poles will also usher in new outlets. It is believed that through policy promotion, standardization, and open cooperation will promote wisdom The pole industry continues to develop healthily.
4G changes life, 5G changes society, and smart poles are regarded as the nodes and information portals of future smart cities. So, what are the salient features of the smart pole?
First of all, the smart pole has multiple functions, which solves the stubborn problems of the “pole station forest” in the current city, and also has the right of way to the residents, which greatly saves social resources. Moreover, the smart pole is more beautiful than traditional light poles and has become a beautiful city. Landscape;
Secondly, the smart pole is known as the best “landlord” for 5G base stations. Not only is there a large number, but also standard installation interfaces are reserved. The power supply and transmission are also in place in one step, only waiting for 5G base station “tenants” to move in. In this regard, some people believe that a smart pole that cannot be installed with a 5G base station is not a qualified smart pole;
Finally, smart poles are like smart phones. With the development of technology and applications, various value-added services can be continuously developed, such as smart parking, smart car linkage, advertising, smart charging, AI monitoring, weather monitoring, etc. Smart poles revitalize light poles from “asset consumption” to “site resources”, and there is a great future for “money”.
Wisdom poles are so promising. Will they be the pig who will soon marry Bai Fumei and go to the pinnacle of life by investing in the smart pole industry?
In fact, this is not the case. Although everyone recognizes the value and importance of smart poles in the 5G era, to do a good job of smart poles, we need to continue to advance from the following points and uphold the revolutionary belief of open cooperation and common prosperity.
Using policies to open up the two lines of Ren and Du:
Policy is a catalyst to promote the development of smart poles. With policy guidance, not only can the approval process be simplified, but also more resources can be released for the construction of smart poles.
Wisdom Rod is like a martial arts wizard. Once the two channels of Ren and Du have been opened up through the “policy”, the skill upgrade speed will swish. At present, all parts of the country have launched 5G industry development plans. For example, the Zhongshan Municipal People`s Government Office issued the “Zhongshan City Action Plan for Accelerating 5G Industry Development (2019-2022)”. The action plan clearly stated that the relevant government departments of Zhongshan City are responsible for promoting 5G. In the construction of smart poles, it also clarifies the arrangements for smart poles in new/reconstructed roads and stock transformation from the policy level.
Guangzhou Huangpu District Industry and Information Technology Bureau and Development Zone Economic and Information Technology Bureau issued the “5G Industrialization Development Action Plan of Guangzhou Development Zone, Huangpu District, Guangzhou (2019-2022)”, pointing out that it is necessary to innovate multi-functional wisdom through marketization methods The operation mode of light pole construction, and stipulates that the general survey of communication network tower resources in the whole region shall be carried out, the establishment of a communication network tower resource library, and the opening of the existing communication tower resources.
Establish standardized martial arts cheats:
The smart pole is powerful, and its construction involves all aspects. How to avoid going astray requires the establishment of a set of standards. Just like martial arts, you must compare peerless secrets in order to practice magical skills, otherwise you may get confused.
For example, considering the expansion requirements of future services, it is necessary to meet the requirements for the introduction of infrastructure such as 24-hour power supply and transmission; in order to consider the phased deployment requirements of smart functions on smart poles (5G base station jacks, cameras, advertising screens…), it is necessary to establish Unify standards and reserve interfaces.
In September 2019, Guangdong Province also issued the country`s first provincial standard “Technical Specifications for Smart Light Pole”.
In the same month, the Shenzhen Municipal Administration of Market Supervision issued the “Code for Design and Construction of Multifunctional Smart Pole Systems”, which will be implemented on October 1.
At the same time, ETSI also launched a European-based pole station standard in June 2019.
Through unified standards, large-scale replication is made possible, while ensuring the quality of construction and future-oriented evolution capabilities.
No matter how high the martial arts is, you also need a sword:
Guan Gong is equipped with a big sword, Zhang Fei has a snake spear, an extinction sword, a lion king slaying a dragon sword, behind every martial arts master, there is a peerless weapon, what is the peerless weapon of the wisdom pole?
The first is the base station. Although the base station modules of traditional tower stations and rooftop stations have strong performance, they are large in size, heavy in weight, and high in power consumption. They are not suitable for smart poles, which are rich and handsome; while traditional small stations are small in size. , Easy to deploy, but the transmit power only reaches the “milliwatt ~ watt” level.
Compared with 3G and 4G, 5G uses a higher frequency band. The high frequency band brings greater wireless attenuation and results in a smaller coverage area. If the hardware modules of traditional small stations are used, it will greatly improve the deployment of smart poles. Density brings a soaring cost of comprehensive site construction, which poses a big problem for engineers.
Technical problems have to be solved by technical means. The answer given by the engineers is: according to the deployment scenarios of smart poles, redesign compact base stations, and continuously improve the effective output power of the base stations to create a new generation of base station series adapted to smart poles !
In order to find the “treasure knife” of the smart pole, engineers worked hard and worked day and night to polish a series of mini-macro base station modules that match the smart pole scene, including BookRU, EasyMacro, HAAU, etc., not only for their attractiveness: small size, light weight, High integration; and capable: support for multiple frequency bands and high output power, ensuring coverage experience in complex scenarios.
The second is the power supply. In order to meet the strict requirements of flexible configuration and flexible expansion of smart pole scenes, engineers have developed a series of blade power supplies (2kW, 6kW, 8kW) and blade lithium batteries (20Ah, 50Ah), which can be built like building blocks. , Assemble flexibly according to demand; for multi-pole/multi-operator sharing power supply scenarios, engineers also provide outdoor integrated cabinet solutions to ensure the continuous coverage of the power “food” of base station equipment on smart poles. Even if the city encounters a power outage, it will not affect the wisdom poles to stick to their posts and realize the glorious mission of the Internet of Everything.
Can make the world heroes:
The multi-functional attribute of the smart pole is destined to be a cross-field and cross-industry product from the day it was born. It is necessary to make friends with heroes all over the world and regularly hold martial arts conferences to find a way for everyone to get rich together.
Among them, a profitable operation model will be an important aspect that determines the sustainable development of the smart pole industry. The Guangdong Telecom Planning and Design Institute once presented at the “5G Smart Pole Integrated Development” forum during the China International Information and Communication Exhibition (PT Exhibition) Three innovative operating models are proposed, including:
1. Government investment, and unified management and operation by government departments;
2. The government invests in the construction of street lights, and social capital invests in the construction of smart functions and is responsible for operation, and the operating income is shared with the government;
3. Social capital invests in the construction of smart light poles, the government grants franchise rights, the social capital party manages and operates the street lamp functions, and the operating income is shared with the government. In addition, he believes that different local policies and economic development levels require different operating models.
With the scale of the national smart pole project and the integration of all parties in the industry, I believe that the arena of the smart pole industry will gradually find out a set of its own rules of the world.
2019 is known as the first year of China’s 5G commercial use. With the extensive promotion of 5G networks and smart cities in China, smart poles will also usher in new outlets. It is believed that through policy promotion, standardization, and open cooperation, the smart pole industry will be promoted. Sustainable and healthy development.

Will there be a battle for light pole resources in the future? Let’s wait and see!

We summarize the construction concept of “smart city” as “one center, four systems, and several system projects”, which is also the core of Wuxi’s smart city solution.

“One center” is the city operation management service center, which is the core of smart city construction.

The “four major systems” are the basic information security system, smart government system, smart people’s livelihood system, and smart economic system. They include several system projects and are the foundation and content of smart city construction. Several systems engineering.

When choosing LED Lamps, everyone is undoubtedly considering that it is more energy-saving and environmentally friendly. However, under long-term use, the LED lamps are also worn out, and some faulty operations can easily damage the LED lamps. Even Led Traffic Lights need to be well maintained and protected in order to be effective and have a longer service life.
●How to use LED lights
1. Look at the clarification book
After buying the lamp, do not be busy with the installation. Read the installation instructions carefully, and then install the lamps according to the installation instructions. Otherwise, risks may occur.
2. Do not change the structure of the lamp
Do not change the internal structure of the lamp during cleaning and protection, and do not change the parts of the lamp at will. After the protection, the lamp should be installed as it is, and no missing or wrong parts of the lamp should be installed.
3. Don’t switch frequently
When using lamps, try not to switch lamps frequently. Although LED lamps can withstand switching times of about 18 times that of ordinary fluorescent lamps, excessive frequency will still affect the life of the internal electronic components of the LED lamp, and then affect the life of the lamp.
4. Prevent wetting
It is especially important to note that, except for special LED traffic lights, general LED lamps should be avoided in humid environments. Humid environment will affect the electronic components of the LED lamp driving power supply. If the electronic components are damp, the lamp life will naturally be shortened.
●Maintenance tips for LED lights
1. Moisture prevention is the key to lighting maintenance, especially for LED lights in bathrooms and baths and stove headlights in kitchens. Moisture-proof lampshades must be installed to prevent moisture intrusion, rust damage, or leakage short circuits.
2. Try not to clean the LED lamp with water as much as possible. Just wipe it with a dry cloth dampened with water. If you do not care about touching the water, try to wipe it dry as much as possible. Do not wipe it with a wet cloth immediately after turning on the light.
3. Prevent use in high temperature and high humidity environments. LED lighting fixtures are generally used when the ambient temperature is 5-40°C.
4. The inside of LED lamps is mainly driven by power supply. It is recommended that non-professionals should not assemble, disassemble and assemble by themselves to avoid the risk of electric shock.
5. The metal parts of LED lighting fixtures cannot be freely used with polishing powder and other chemical agents. The dust on the back of LED lighting fixtures should be cleaned with dry cloth or duster.
6. Check the indoor lamps and lanterns regularly, especially the chandeliers. On the one hand, check whether the line is aging, on the other hand, check whether the chandelier is suspended. The chandelier is hung in an important position or a place with a lot of people, and its stability should be good.

The use of led traffic lights is related to the problem of household electricity consumption. You can’t be greedy to choose inferior products cheaply for a while, learn to use and maintain dry goods, and the lamps are more efficient!

At present, solar LED Street Lights have a variety of models and specifications in the market, which can well meet various needs of users.
In order to ensure the efficiency of solar Led Street Light lighting, merchants must clarify the product model of LED Solar Street Light when purchasing, which can facilitate future maintenance work. Products after repair should be reported to the manufacturer`s engineers in time. This type of failure can be effectively avoided in the solar LED street lights produced in the future.
This also creates very good conditions for its future sustainable workability, which can effectively increase the working characteristics of its products to a certain extent, so that solar LED street lights can be more durable. When installing solar LED street lights, only guarantee LED The high efficiency of solar street lights can ensure the road to achieve good road lighting.
Solar LED street lights are now more and more widely used in road energy-saving lighting. Because LED solar street lights are durable and energy-saving, they are relied on by government agencies or large enterprises in various countries, and LED solar street lights are used by street light manufacturers to reduce energy consumption. At the same time, the quality of road lighting is improved to ensure people’s travel safety.
The working principle of the solar street lamp is very simple, that is, the Solar Panel made by the photovoltaic special effect principle receives solar radiation energy during the day and converts it into electrical output. It is stored in the solar battery through the charge and discharge controller, and the illuminance gradually decreases to About 101ux, the open circuit voltage of the solar panel is about 4.5v. After the charge and discharge controller measures this voltage, the solar battery will discharge the lamp cap.
Generally, the market price of solar battery discharge can be set by yourself or controlled by light. The main function of the charge and discharge controller is to protect the battery and control the switching of solar street lights. Therefore, the use of solar controller and solar battery is important for photovoltaic power generation solar street lights. It was a very important component system.
The price of LED street lights is expensive because its LED light source is generally epoxy resin, which has the function of anti-ultraviolet and fire retardant. The price of high-quality outdoor LED street lights will naturally have an impact. Every product of street lamp manufacturers has In different designs, different designs can be used for different purposes, making it have a certain versatility.
In terms of energy saving and health, it may also be the reason for the high price of LED street lights. It is designed with non-toxic materials and does not contain the presence of lead, mercury, cadmium lamp toxins, giving the use of environmental safety and reliable protection. The advantages of dust-proof design, fire resistance, ultraviolet radiation, and low-temperature cracking of the square, with so many advantages, the high price of such high-quality LED street lights is understandable.
Solar energy control is used in solar power generation systems. It can control the automatic equipment of solar battery charging and solar battery powering solar inverter loads. Generally, solar street lights use valve-controlled sealed lead-acid batteries, which is beneficial to system maintenance. The cost is reduced, and the charge and discharge controller is designed with both complete functions and cost control to achieve a good cost performance.
1. The stability of the solar controller is very important to the service life of solar led street lights, because the role of the solar controller is to control the use of solar panels to charge and discharge the battery of the street lamp manufacturer. The solar controllers currently used are all The intelligent configuration used ensures that the street lights are illuminated and dimmed at the correct time, and the time will automatically change according to the changes in weather and environment.
2. When choosing a solar battery, you must choose a stable quality, so as to ensure the service life of the battery, and the quality of the battery can also directly affect the service life of the street lamp.
3. The lamp holders of solar street lamps generally include sodium lamps, induction lamps, led lamp holders, etc., but the service life of the led lamp holder is the longest, generally up to 50,000 hours, but its price is also more expensive than others.
Through the above three introductions, everyone should know the issues to pay attention to when buying solar street lights. Also, when buying solar street lights, don`t buy some low-priced, very likely low-priced street lights because they are expensive. The quality is not guaranteed. You must go to a large professional street lamp manufacturer to buy a lamp. Only a professional manufacturer can guarantee the service life of the street lamp and guarantee a certain after-sales service.

1. The installation height of pedestrian traffic lights is half between two meters and two meters.
2. The position of pedestrian traffic lights should be installed on the crosswalk.
3. Pedestrian traffic lights should be installed along the extension lines on the sidewalks on both sides of the crosswalk, two meters from the sidewalk, and installed on the lamps.
4. In more concentrated road sections, sound prompt devices for pedestrian traffic lights should be installed.
5. The height of the pedestrian button of the pedestrian traffic signal light is one meter within the range of the pedestrian.
Non-motor vehicle signal lamp installation:
1. The installation height of the non-motor vehicle signal lamp is 2.5-3 meters, and the installation height is the same as the motor vehicle signal lamp in the case of borrowing the motor vehicle signal light pole and adopting the cantilever installation fee motor vehicle signal lamp.
2. The installation position of the non-motor vehicle lane signal lamp should be such that the yellow signal light axis points forward and is 25 meters away from the horizontal distance of the lamp, and the center point of the non-motor vehicle lane controlled by the lamp is 1.6 meters away from the road surface.
3. The crosswalk signal lights should be installed vertically, and the order of the signal lights should be top red and bottom green.
4. For roads with no separation between motor vehicle lanes and non-motor vehicle lanes, the non-motor vehicle signal lights should be installed in an attached manner and installed on the signal light poles that guide the passage of motor vehicles.
5. When the motor vehicle traffic signal light pole is installed on the separation zone between the motor vehicle lane and the non-motor vehicle lane on the right side of the exit, if the width of the separation zone is less than 2 meters, the non-motor vehicle traffic signal light should be attached to the motor vehicle signal light pole.
6. When the distance between the non-motor vehicle parking line and the corresponding non-motor vehicle signal light is greater than 50 meters, a non-motor vehicle signal light group should be added at the entrance.
7. When it is necessary to separately control the traffic flow of left-turning non-motorized vehicles, install it vertically and divide it into 2 groups. The left group is the left-turning non-motor vehicle signal light, which should be red, yellow, and green from top to bottom; the right group is The signal lights of non-motor vehicles should be red, yellow, and green from top to bottom.

With the advancement of urbanization, there are more and more motor vehicles on the road. In addition, the increase of electric boats also puts a certain pressure on road driving. Therefore, many traffic facilities and various types of traffic can be seen at various road junctions. Signs play a very important role in the safe driving of roads. In the setting of traffic signs, the surface colors are relatively bright, which can give pedestrians a good visual impact. The traffic signs can be seen at first glance, and Drive according to its instructions. Especially at night, under the illumination of the car lights, the signs on the surface can be seen through the reflection, which effectively improves people’s discrimination ability, arouses the alertness of the driver, and provides great convenience for people to drive in the dark. .
1. All signs to be installed must be confirmed by the engineer before they can be installed, and the product quality must be strictly inspected.
2. After the equipment arrives at the site, manage pedestrians and traffic with safety facilities such as traffic signs, road fences, and strictly follow the operating rules to ensure the safety of on-site personnel, try to prevent accidents and ensure construction safety.
3. Determine the location of the sign in strict accordance with the requirements of the construction drawings and the direction of the traffic flow.
4. Fix the sign board on the pillar by sliding bolts, hoop and other connecting accessories. The height of the lower edge of the single-post sign board should be 250cm from the road surface.
5. After the basic measurement of the traffic signs, the excavation work should be considered after consideration of the location set on the drawing, and the processing shall be carried out according to the regulations. Formwork, reinforcement, concrete pouring, anchor bolts and base flange The location is correct and reaches the specified elevation,
6. The erection of the sign support structure should be carried out after the strength of the foundation concrete meets the requirements and the approval of the supervision engineer. The flange of the pillar and the base flange of the concrete foundation should be level and close, and the anchor bolts should be properly matched, and the bolts should be tightened. The rear pillar must not be inclined;
7. After installing the sign board, check and adjust the verticality and height of the sign board to make it meet the specified requirements;

8. After the installation of traffic signs is completed, clean up the traffic signs to keep the surface clean and beautiful.

Lamp setting conditions4.1 Signal lamp setting conditions general rules
4.1.1 The three situations of intersection, road section and crossing should be considered when setting signal lights.
4.1.2 “The setting of intersection signal lights should be determined according to the shape of the intersection, traffic flow, and traffic accident conditions.
Signal lights and corresponding supporting facilities dedicated to guiding the passage of public transportation vehicles can be set up.
4.1.3 The setting of road section signal lights should be determined according to conditions such as road section traffic flow and traffic accident conditions.
4.1.4 At the crossing, crossing signal lights should be set.
4.1.5 When setting signal lights, corresponding road traffic signs, road traffic markings and traffic technology monitoring equipment should be provided.
4.2 intersection signal light setting
According to the shape, intersections can be divided into: cross, oblique, T, Y, staggered T, staggered Y, multi-way, and circular intersections.
4.2.1 Cross intersection, oblique intersection, T-shaped intersection, Y-shaped intersection
— When the two intersecting roads are both arterial roads, signal lights should be set.
— When one of the two intersecting roads is a branch road, it should be determined whether to install signal lights according to the traffic flow (see 4.3 for details) and traffic accident conditions.
Note 1: Arterial roads in this standard refer to express roads, arterial roads, and secondary arterial roads (large and medium-sized cities) that comply with the provisions of Chapter 7 of GB50220-1995 in terms of design speed, number of vehicle lanes, road width and cross-sectional form. And arterial roads (small cities), and roads with four lanes or more in both directions.
Note 2: The branch road in this standard refers to the branch road and the following roads in accordance with the provisions of Chapter 7 of GB50220-1995 in terms of design speed, number of motor vehicle lanes, road width and cross-sectional form, as well as roads with two-way four lanes or less.
4.2.2 Dislocation T-shaped intersection
When the dislocation distance is less than 50 meters, it can be regarded as a crossroad or skew intersection, and the signal light shall be set according to 4.2.1.
— When the dislocation distance is greater than 50 meters, it can be regarded as two T-shaped intersections, and the signal lights shall be set according to 4.2.1.
Note: Dislocation distance refers to the distance between the adjacent curb lines of two dislocation roads.
4.2.3 Dislocation Y-shaped intersection, multiple intersection
After reasonable traffic channelization, the setting of signal lights should be determined according to conditions such as traffic flow and traffic accident conditions.
4.2.4 roundabout
The setting of signal lights should be determined according to conditions such as the capacity of the roundabout, traffic flow, and traffic accident conditions.
4.3 Traffic flow conditions for the setting of signal lights used to guide the passage of motor vehicles at intersections
4.3.1 Peak hour traffic conditions of motor vehicles
When the peak hour flow of motor vehicles at the intersection exceeds the value listed in Table 1, signal lights should be set.
1: The main road refers to the road with larger traffic among the two intersecting roads.
2: The secondary road refers to the road with the smaller flow among the two intersecting roads.
Note 3: The number of lanes is counted as the number of canalized sections or road sections above 50 meters from the intersection.
Note 4: At an entrance without a dedicated non-motor vehicle lane, the non-motor vehicle flow entering the intersection should be converted into an equivalent car flow and considered uniformly.
Note 5: When counting the one-way flow of secondary roads, the larger value of the two inlets in each flow statistics period should be accumulated.
4.3.2 Hour flow conditions of any continuous 8h motor vehicle
That is, when the average hourly flow of motor vehicles for any continuous 8 hours at the intersection exceeds the value listed in Table 2, signal lights should be set.

4.4 Non-motorized vehicle signal lights at intersections
For intersections on a single lane of motor vehicles, non-motor vehicle signal lights should be installed at the entrance opposite to the traffic flow of motor vehicles.
When a non-motor vehicle driver cannot clearly see the display status of the signal light used to guide the passage of motor vehicles within 25m from the stop line at the intersection, the non-motor vehicle signal light shall be set.
In other special circumstances, if the conflict between motor vehicles and non-motor vehicles cannot be resolved through traffic organization, non-motor vehicle signal lights should be set.
4.5 Intersection crosswalk signal light setting
At intersections where signal control is adopted, pedestrian crossing markings should be set up accordingly.
4.6 Principles of setting direction indicator lights at intersections
At intersections with dedicated turning vehicle lanes, if the multi-phase phase setting method is adopted, direction indicator lights should be installed.
At intersections where multi-phase phase setting is not used 24 hours a day, no direction indicator lights should be installed.
4.7 Lane signal light setting
Lane signal lights should be installed at variable lane entrances, road sections, tunnels, toll stations and other places.
Lane signal lights can be installed at the entrances and exits of urban expressways and other places according to actual conditions.
4.8 Flash warning signal light setting
Where it is necessary to remind drivers and pedestrians to look out and pass after confirming safety, flashing warning lights should be installed.
4.9 Traffic accident conditions for intersection signal lights
4.9.1 For intersections where an average of more than 5 traffic accidents occurred each year within three years, if accidents can be avoided by setting signal lights from the analysis of the cause of the accident, signal lights should be installed.
4.9.2 Signal lights should be installed at intersections where an average of more than one fatal traffic accident occurs each year within three years.
4.10 Comprehensive conditions for the setting of traffic lights
4.10.1″ When two or more conditions in Table 1, Table 2 and 4.9 reach 80%, signal lights should be set at intersections.
4.10.2 Signal lights can be installed at intersections that do not meet the above conditions but have special requirements, such as intersections on the work route of common guards, and intersections within the coordinated control range of the traffic signal control system.
4.11 Traffic conditions for pedestrian crossing signal lights and motor vehicle signal lights
The number of two-way motor vehicle lanes reaches 3 or more. On the road section where the peak hour traffic of two-way motor vehicles exceeds 750 PCU and the 12-hour traffic exceeds 8000 PCU, when the peak hour traffic of pedestrians passing through the crosswalk exceeds 500 people, crosswalk signal lights and corresponding machines should be installed. Motor car signal lights.
Note: For a one-way motorized road, the number of lanes is counted according to the number of lanes in the permitted direction, and the peak hour traffic of motor vehicles is counted according to the permitted direction of traffic.

Preface: Driven by social and economic development, my country’s street lamp service facilities have been further improved, and the corresponding street lamp maintenance work has also increased. Street lights play an indispensable role in people`s daily lives. Providing basic lighting services for people on the road at night is also an important part of the basic service system of modern cities. But if you want to better play its service role, you must focus on doing Good maintenance and maintenance work, take corresponding measures based on the actual situation of the region, formulate practical and reliable maintenance plans in accordance with unified standards, improve the overall maintenance management efficiency and quality, and reduce unnecessary problems.
Existing problems and solutions:
Causes of failure and maintenance measures when street lights are off and voltage is normal
1) Street lights are naturally aging. During the long-term use of the street lamp, the electrode emission material will gradually decrease. With the prolonged use of the street lamp, it will eventually be exhausted, and this material will remain in the arc tube, and these residual impurities will continue to deflate. The starting voltage of the street lamp will be greatly increased, making it more and more difficult to start the street lamp. If it is serious, it will not be able to start. This will bring inconvenience to people`s travel. When solving this problem, the best way is Replace with new street lights.
2) The outer glass shell of the street lamp is damaged or leaking. Street lights are mostly continuously illuminated at night, and the external environment is changeable. In case of bad weather, it will inevitably affect the normal performance of the street lights. This requires a glass shell outside the street lights. For example, a high-pressure sodium lamp, if it is damaged or leaks during use, its getter mirror will gradually become milky white, and there will be obvious oxide layers on both ends of the arc tube, which will affect the lighting effect. It is necessary to strengthen protection in daily management and replace new bulbs when necessary.
3) Street lights start slowly. Street lighting is too slow when starting, which is also a common fault. There are many reasons for this failure, such as insufficient electrode emission, insufficient output pulse amplitude, and low power supply voltage. Failures caused by different reasons have different solutions. If the electrode emission is insufficient, you need to replace the street lamp; if the output pulse amplitude is not enough, you need to replace the electronic trigger; or the power supply voltage is too low, you need to increase it appropriately Power supply voltage improves the quality of power supply.
4) The starting device is damaged. The starting device contains an auxiliary starting conductor. Once the position of this conductor changes or the heating wire inside the street lamp is burned by high temperature, the starting device inside the street lamp will be damaged, and it will not start normally, and the lighting function of the street lamp will be difficult to achieve. For this situation, the only solution is to replace the new street lights.
5) The problem of the lead wire of the street light. There are many leads inside the street light bulb, and these leads are connected by welding. If some of the leads are unsoldered or the lamp cap is loose, it will easily cause a short circuit or open circuit in the internal leads of the street light, which will make the street light difficult to normally illuminate. It must be discovered, resolved, and dealt with in time.
6) Street lights go out intermittently. Street lamp bulbs contain more sodium substances. This sodium substance is the key to the normal function of street lamp lighting. With the prolonged use of street lamps, this sodium substance will gradually decrease, so that the voltage will increase and street lamps will appear. If the situation is intermittently extinguished, it is necessary to replace a new street light bulb and ensure sufficient sodium. In addition, if the intermittent extinguishing problem is caused by the decrease of the capacitor capacity, the capacitor needs to be carefully inspected and replaced if necessary; if it is caused by the high temperature of the lighting environment, ventilation and heat dissipation must be done.
Causes and solutions of the failure when the bulb is off and the voltage is abnormal
1) Fuse. The failure of the fuse is generally caused by loose or poor contact of the porcelain insert. If the problem persists after it is secured, a new fuse device must be replaced. In addition, the overload of the street lamp power supply line will also cause the fuse to fail. This requires technicians to use professional testing equipment to inspect the power supply line and formulate a solution based on the severity. In this process, ensure that the fuse The specifications and models of the equipment meet actual needs.
2) Ballast. Under normal circumstances, the failure of the ballast is nothing more than three conditions, namely, open circuit, burn out and short circuit between turns. When the ballast device is in an open circuit state, its input terminal will have current and voltage, but the output terminal does not exist. If the winding coil has poor contact or is burned, you need to replace the new ballast device . Once the ballast equipment is burned out, its winding coil will be burnt if the temperature is too high, and there will be a strong scorching smell, and the ballast equipment must be replaced with a new one. In addition, the phenomenon of inter-turn short circuit will greatly reduce the line impedance, which will cause the voltage of the street lamp to increase, and the increase of the line current value, which reduces the service life of the street lamp, and needs to be replaced at this time.
3) Electronic trigger failure. If a street lamp has an electronic trigger failure, the most obvious consequence is that the street lamp is burned out, and once the street lamp is burned, not only the shell will be deformed, but the output pulse will also be seriously affected. At this time, the technician must replace the equipment in time. It should be noted that if the model of the electronic trigger is inconsistent with the ballast equipment, its output pulse amplitude will be seriously lower than the actual set standard value, which will cause the street light to be difficult to start normally, and a new electronic trigger needs to be replaced.
4) The street lamp circuit is faulty. The fault of the street lamp circuit is mostly caused by the intensive connection error of the circuit. At this time, technicians are required to use professional equipment to check the circuit connection parts to ensure that the current value of the circuit connection parts is constant and meets safety standards. When the live wire and the lamp holder chip are connected, the ballast is indispensable, and the length of the circuit at the lamp holder must be moderate and not too long. In addition, once the wire insulation layer of the street lamp circuit is damaged, or its withstand voltage performance is reduced, it will also affect the starting pulse and must be replaced.
5) Compensation capacitor failure. During the use of street lamps, once the compensation capacitor fails, the most common cause is improper selection of capacitors. The type and specifications of the capacitors are inconsistent with the requirements of the street lamps, and the internal voltage of the street lamps will therefore be in an abnormal state, and the street lamps are also difficult to provide For normal lighting functions, at this time, the compensation capacitor should be replaced according to the technical standards of street lamp engineering maintenance. When replacing, ensure that the specifications and capacity of the equipment are consistent.
6) The voltage of the street lamp power supply is unstable. Unstable voltage will cause the street lamp to flicker. If the voltage of the street lamp power supply is above 240 V for a long time, the street lamp will be in an over-powered working state, which will greatly shorten the service life. If the power supply voltage fluctuates too much, it will make it difficult to start the street lamp, and it is difficult to start the lighting function in the first time. Therefore, it is necessary to strengthen the inspection of the street lamp power supply voltage to maintain the voltage stability.
to sum up:
With the acceleration of urbanization, urban infrastructure has become more and more complete, and urban functions have become more abundant. As a basic component of urban functions, street lamps are closely related to people`s travel. Strengthening street lamp management and improving the efficiency of street lamp repair and maintenance are issues that must be paid attention to in current urban development. In view of the current problems in urban street lamp repair and maintenance work It is necessary for the city management department to combine its own reality and take corresponding countermeasures to achieve efficient management of street lights, reduce unnecessary problems, and provide basic guarantee for people’s lives and work.

The difference between the lamp holder used in LED Lamps and ordinary lamps is that it is more stable, more energy-saving and environmentally friendly, and has a more advantageous price. As a new type of semiconductor lighting products, LED street lamp heads have more powerful outstanding advantages in terms of light source stability, protection level and convenience, and it is precisely with such powerful advantages that they can be favored by many customers. Trust, then, what are the outstanding advantages of a good LED street lamp head?
At present, the Led Street Light industry is very hot, and the pressure of competition is very high. It is precisely because of this that many manufacturers in order to get more orders and profits, they falsely mark product parameters, which will make customers feel that their products have advantages. This leads to more transactions. This approach is very bad, but because it can make a profit, many manufacturers will follow suit, thereby ruining the atmosphere of the entire market. Solar street lights have a series of advantages such as low carbon, environmental protection, safety and reliability, which are recognized by the majority of customers and have been vigorously promoted. Therefore, it can be trusted by many customers. So, what are the outstanding advantages of a good LED street light head?
1. Good light source stability
The easy-to-use LED street lamp head has high light source stability. The lamp adopts imported light source chip, and its surface is made of high-quality tempered glass material with good explosion-proof and waterproof performance. Therefore, it can better protect the lamp and keep it in It can also maintain a stable and long-lasting luminous state under long-term use of lighting, thereby providing people with a light source with higher brightness.
2. High environmental protection and energy saving
The industry-leading LED street lamp head has greater advantages in terms of environmental protection and energy saving. Because the LED lamp adopts energy-saving lighting technology, it will automatically reduce the brightness and shorten the lighting time during the night. On the other hand, the lamp is in Infrared and ultraviolet radiation will also be much lower than traditional products, and will not cause any pollution to the external environment during production and use, so this is also the excellent environmental protection and energy saving advantage of the LED street lamp head.
3, high quality, low price and low maintenance price
The high-quality and durable LED street lamp head itself has strong self-cleaning ability. Because it is made of special anti-static materials, the surface layer will not adhere to too much dust or moisture, which can also reduce the user’s regular cleaning In addition, compared with traditional lighting fixtures, the price of this LED street lamp will be more advantageous, because the product`s material procurement and production costs will be much lower than traditional lamps, so it can also serve customers Provide cheaper product prices.

Looking at the above points, I realize that the LED street lamp has the advantages of good light source stability and high environmental protection and energy saving, but also has the outstanding advantages of affordable and low protection price, which can not only increase the protection of a large number of profits. It also loses the motivation for better use, and can also have higher environmental performance to make a contribution to the protection of ecological conditions.

2021-01-14

1. The appearance of the module. From the top of the appearance, the four corners of the monocrystalline silicon cell are arc-shaped and there is no pattern on the surface.
The four corners of the polycrystalline silicon cell are square corners, and the surface has patterns like ice flowers.
2 2. For users, there is not much difference between monocrystalline silicon cells and polycrystalline silicon cells in the use of components. Their life and stability are very good. The average conversion efficiency of monocrystalline silicon cells is higher than that of polycrystalline silicon, but the current price is higher than that of polycrystalline silicon. 3 3. In the module manufacturing process, polycrystalline cells have fewer production process steps than monocrystalline cells. Therefore, the energy consumed in the manufacturing process of polycrystalline silicon solar cells is slightly less than that of monocrystalline silicon solar cells, but the power generation of monocrystalline solar cells is higher. Calculating the energy consumption ratio is not much different.
Comparison of monocrystalline photovoltaic modules and polycrystalline photovoltaic modules
1) Looking at the history, the application of monocrystalline photovoltaic panels was earlier than that of polycrystalline photovoltaic panels. Monocrystalline is the big brother, and polycrystalline is the younger brother, but the younger brother developed faster later.
2) Depending on the amount, the application of polysilicon in power stations is much higher than that of monocrystalline silicon, with monocrystalline silicon accounting for 30% and polycrystalline silicon accounting for 70%.
3) Looking at the appearance, the monocrystalline silicon is dark blue, almost black, the polycrystalline silicon is sky blue, and the color is bright, the single crystal cell is rounded at four corners, and the polycrystalline cell is square.
4) Looking at the conversion rate, the efficiency of single crystal is higher than that of polycrystal, about 10%-20%.
5) Looking at the cost, the cost of single crystal is slightly more expensive than that of polycrystalline. Different manufacturers have different costs. The market price per watt is five cents to one dime.
6) The measured data of attenuation shows that single crystal and polycrystal have their own advantages, and it is impossible to distinguish the speed of attenuation from single crystal and polycrystal. Relatively speaking, the product quality (sealing degree, whether there is a magazine, whether it is cracked), has a greater impact on the attenuation.

7) Looking at the price/performance ratio, at present, the price/performance ratio of polycrystalline is slightly higher than that of single crystal. It is only for now. With the reduction of the cost of single crystal components, a reversal may occur in a few years.

2021-01-13

City circuit lights

1. The installation and operation procedures are complicated, and cables need to be laid. A large number of basic works such as excavation of cable trenches, laying of hidden pipes, threading in the pipes, and backfilling must be carried out. And for a long time installation and debugging, the terrain and wiring requirements are complicated, and the labor and auxiliary materials are expensive.

2. The cost of electricity is high, and it is necessary to maintain or replace the line and other configurations for a long time, and the maintenance cost is increasing year by year.

3. There are hidden safety hazards, due to the construction quality, the transformation of landscape engineering, the aging of materials, the abnormal power supply, and the conflict between water and electricity pipelines.

4. The average service life of city circuit lights is about 10,000 hours, and the longer the service life, the greater the degree of pipeline aging.

5. The larger the scale, the higher the related costs for the installation of municipal circuit lights, and the total investment will be higher than that of solar street lights. In addition, the annual loss of cable theft cannot be estimated.

Solar Street Light

1 install simple
There is no need to lay complicated lines, just a cement base, fixed with stainless steel screws.

2Free of electricity charges
Solar street lights are a one-time investment with no maintenance cost. The investment cost will be recovered in 1-3 years and will benefit in the long term.

3 there are safety risks

Solar lights are ultra-low voltage products, which are safe and reliable in operation.

4 main components of solar street light

The service life of solar panels is 25 years; ultra-high brightness

Solar street lights are energy-saving street lights, saving installation costs, saving power resources, and reducing electricity expenses. Solar street lights use clean and renewable energy, which has obvious social and economic benefits. From the perspective of social benefits, the use of solar street lights can help my country’s energy structure adjustment and reduce carbon dioxide emissions; from the perspective of economic benefits, it can significantly save electricity.

The price of solar street lights is determined by the configuration of solar street lights. Solar street lights are assembled products and are divided into nine major components: solar panels, solar batteries, controllers, LEDs, lamps, poles, battery boxes, cables, and embedded The price of Solar Street Light is composed of the unit price of nine major components, so the price of solar street light has a great relationship with what kind of accessories the solar street light chooses; today I will analyze it from the perspective of solar panels and batteries a bit:

1. Solar panels for the price of solar street lights: Solar panels are currently divided into monocrystalline silicon panels and polycrystalline silicon panels on the market. The price difference is about 4 to 5 cents per watt. The price of monocrystalline is higher, and the price of polycrystalline It’s cheaper. What is the difference between single crystal and polycrystal?

1. In appearance, the monocrystalline solar panels are black with chamfers; the polycrystalline solar panels are bluish with no chamfers;

2. In terms of conversion efficiency, the conversion efficiency of monocrystalline solar panels is higher than that of polycrystalline solar panels, 17%-18% for monocrystalline solar panels and 16%-17% for polycrystalline solar panels;

3. The strong light effect of monocrystalline solar panels is better, while the weak light effect of polycrystalline solar panels is better;

To sum up, if you choose different solar panels, the price of the whole set of solar street lights will be different, but the current solar street lamp applications, polysilicon solar panels are enough for solar street light power generation systems, there is no need to use monocrystalline silicon Solar panels, at the same time, due to the severe smog in China, it is a good choice to purchase polysilicon panels with better low-light effects;

2. Solar energy storage battery for solar street lamp price: Solar energy storage battery is currently divided into lead-acid battery and gel battery on the market. The price difference is about 1 yuan to 2 yuan per AH. The price difference is relatively large, but with the battery With the development of lead-acid batteries, lead-acid batteries are slowly being phased out by the market. At present, most solar street lights on the market use gel batteries. What is the difference between gel batteries and lead-acid batteries?

1. Divided by electrolyte type, including: alkaline batteries, batteries whose electrolytes are mainly potassium hydroxide aqueous solutions, such as alkaline zinc manganese batteries (commonly known as alkaline manganese batteries or alkaline batteries), nickel cadmium batteries, nickel hydrogen batteries Etc.; acid batteries, mainly using aqueous sulfuric acid as the medium, such as lead-acid batteries; neutral batteries, using salt solution as the medium, such as zinc-manganese dry batteries (some consumers also call them acid batteries), seawater activated batteries, etc.; organic Electrolyte batteries, mainly batteries that use organic solutions as the medium, such as lithium batteries and lithium ion batteries.

2. According to the nature of work and storage methods, it includes: primary batteries, also known as primary batteries, that are batteries that cannot be recharged, such as zinc-manganese dry batteries, lithium primary batteries, etc.; secondary batteries, namely rechargeable batteries, such as nickel hydrogen batteries Lithium-ion batteries, cadmium-nickel batteries, etc.; batteries are used to refer to lead-acid batteries, which are also secondary batteries; fuel cells, that is, active materials are continuously added to the battery from outside when the battery is working, such as hydrogen-oxygen fuel cells, etc.; reserve batteries , That is, the battery does not directly contact the electrolyte when it is stored, and does not add the electrolyte until the battery is in use, such as magnesium-silver chloride batteries, also known as seawater activated batteries.

3. According to the positive and negative materials used in the battery, it includes: zinc series batteries, such as zinc manganese batteries, zinc silver batteries, etc.; nickel series batteries, such as nickel cadmium batteries, nickel hydrogen batteries, etc.; lead series batteries, such as lead-acid batteries Etc.; lithium series batteries, lithium magnesium batteries; manganese dioxide series batteries, such as zinc manganese batteries, alkaline manganese batteries, etc.; air (oxygen) series batteries, such as zinc air batteries, etc.

In summary, it is the best choice to use colloidal batteries for solar street lights, especially in northern areas. Due to the low temperature in winter, the use of lead-acid batteries will seriously affect the efficiency of the batteries in winter. Although the price of colloidal batteries is slightly higher, the use The life span will be longer, and the comprehensive comparison is more cost-effective.

1. The LED lamp replacement acceptance stage

This stage refers to the early development of LED products, which mainly reflects the characteristics of high efficiency (low energy) and long life. Because of the high price, LED lighting products are mainly used in the commercial market at this stage. In view of the customer’s acceptance process, the first is the transition and acceptance of the use habits and appearance. According to the comparison with traditional light sources, under energy-saving use conditions, the price of long-life LED lighting products is relatively high and easy to be accepted by the market, especially in commercial occasions. Many Solar Street Light manufacturers use quality and price advantages as a means of competition.

2. LED Street Lights in the utility model stage

Based on the above stages, LED lighting products have been recognized and accepted by the market. LED lighting products featuring environmental protection, small size, and reliability are gradually emerging. Then a series of LED lighting products are completely different from traditional light source products in many ways. The lighting industry will have a larger and broader development space. Its wide variety is more suitable for people’s work and life. Then, many solar street lamp manufacturers take advantage of design and application, and competitive means.

Third, the intelligent control stage of LED street lights

The process that the LED lighting industry will go through, from product manufacturing to product design, and to provide overall solutions. The LED lighting industry also shows high controllability characteristics. The Led Street Light products and intelligent control system will bring high-quality services to humans, from homes to office buildings, from roads to tunnels, from cars to walking, from auxiliary lighting to main lighting, etc.

First, the core of counterfeit chips and low-end chips LED Lamps is the chip, which directly determines the performance of the lamp! However, some unscrupulous manufacturers take advantage of customers’ unprofessionalism and use low-cost chips from the perspective of cost, which causes customers to buy low-quality products at a high unit price, causing direct economic losses and causing serious quality risks to LED lamps.

Second, configure virtual labels and exaggerate configuration parameters

The fierceness of solar street lamps is also accompanied by the reduction of price and profit. The fierce competition has also led to many solar street lamp manufacturers beginning to cut corners and false standard product parameters, such as the wattage of light source, the wattage of solar panels, the capacity of batteries, and even the use of Solar Street Light Poles. The materials are all in problems. Of course, this is also caused by customers’ repeated price comparisons and low prices. It is also related to the practices of some manufacturers.

Third, poor heat dissipation design and unreasonable configuration

In terms of heat dissipation design, every time the PN junction temperature of the LED chip increases by 10 degrees, the life of the semiconductor device will be reduced by multiples. Due to the high brightness requirements of LED solar street lights, the use environment is relatively harsh, if the heat dissipation is not solved well, it will quickly cause LED aging and reduce stability. In addition, unreasonable configuration often leads to specific usage conditions that fall short of expectations.

Fourth, the copper wire pretending to be gold wire and the controller problem

Many LED manufacturers try to develop materials such as copper alloy, gold-clad silver alloy wire, and silver alloy wire to replace expensive gold wires. Although these alternatives are superior to gold wires in some properties, they are much worse in terms of chemical stability. For example, silver wires and gold-coated silver alloy wires are susceptible to sulfur/chlorine/bromination corrosion, and copper wires are prone to oxidation and sulfide. For the encapsulated silica gel similar to the water-absorbent and breathable sponge, these alternatives make the bonding wire more susceptible to chemical corrosion, the reliability of the light source is reduced, and the use time is long, and the LED lamp beads are more likely to break and die. Regarding the Solar Street Light controller, if the controller is faulty, during the test and inspection process, “the whole light is off”, “the light is not switched on time”, “partially damaged”, “individual LED lamp bead dead light”, ” The whole lamp flickers and ignited.”

1. The ability of solar street lights to save electricity during the discharge process: solar street lights are lighting equipment that solar panels absorb solar energy and then convert them into electrical energy. To ensure the normal operation of the lighting equipment, it is necessary to use electrical energy efficiently to reduce the loss of discharge, and then achieve energy saving The role of consumption reduction!

2. The solar battery has the ability to store electric energy: the electric energy converted by the solar battery panel, if there is no battery storage, then these capital will be spoiled. Therefore, the solar battery must have a satisfactory storage capacity and be compatible with the conversion of solar panels Combination, and the higher the storage capacity of the solar battery, the better;

3. The ability of solar panels to convert solar energy into electrical energy per unit time. The conversion capacity is related to the size of solar panels. Assuming that temporary rainy days occur in a certain area, relatively large solar panels should be used;