Most of the world's governments are currently upgrading Road Lighting . The first step is to install LED street lights in newly developed areas. Next, LED street lights will replace existing old street lighting. According to estimates, most of today's street lights will be replaced by LED lighting in the next five years. However, one of the major problems facing LED street lamps is their low reliability, because it is mainly used for outdoor lighting and faces a variety of extreme environmental conditions, such as long-term exposure to sun and rain, thunder and lightning, and large temperature changes. In order to be recognized by the market and used on a large scale, LED street lamps must first solve the reliability problem. Liu Xuechao, Business Development Manager, TI Semiconductor Business Unit Dr. Liu Xuechao, Business Development Manager of High Performance Analog Products, TI Semiconductor Division, said: "The Led Street Light market has broad prospects, but it must solve the reliability problem." LED street light is a complex system consisting of optics, thermals and electronics. Although the LED itself has a long life, if the LED driver circuit is not properly designed, such as low-quality active or passive components, the overall drive circuit life is achieved. Failure to match the LED will affect the quality and life of the LED street light. Furthermore, LED temperature management and heat dissipation are also very important. Once the operating temperature is higher than 100 °C, the reliability of the LED itself will be affected. Of course, factors such as early LED failure, assembly of local defects and transient phenomena also cause LEDs to occasionally fail. If proper shunt protection measures are not taken, the failure of a single LED will cause the entire string of LEDs to be off, affecting the overall street lighting effect. . Liu Xuechao emphasized: "LED street light is a complex system design, involving light, electricity, heat, machinery and other fields. In terms of driving power, it is mainly the problem of efficiency and reliability. First, the operating temperature of the driving power supply is very high (generally At 70 degrees or so, in this way, it is desirable to drive the efficiency of the power supply (including constant voltage plus constant current) to a certain height (such as >90%), reduce the temperature of the driving power supply, improve reliability. Second, the tradition The drive topology is complex, including PFC, PWM isolation and constant current DC/DC three-level circuits (as shown below), with many components and low reliability, especially sensitive devices such as electrolytic capacitors and optocouplers." Therefore, in the process of Led Street Lamp design, LED temperature management or heat dissipation must be well considered, so that the operating temperature of the LED is kept below its junction temperature (maximum junction temperature is 150 ° C). It is generally recommended that the LED operating temperature be lower than 100 ° C, to avoid the impact of LED reliability. In addition, LED driver circuit designers must carefully select active or passive components in the circuit to ensure they match the LED lifetime. For example, designers should avoid using electrolytic capacitors as much as possible, as such capacitors can leak during long-term use and result in reduced operating life. Furthermore, in the overall LED lighting market, LED streetlights are the most powerful of all LED lighting applications, requiring multiple power levels and complex topologies to meet power factor correction (PFC) and total harmonic distortion (THD). , 85 PLUS efficiency and other standards and regulations, as well as multiple string LED current requirements. Liu Xuechao also believes: "To solve the circuit reliability problem of LED street lamps, it is necessary to improve from the driving topology, improve efficiency, reduce the number of components, and further reduce costs."
The new product line is the characteristic product of our company's production and development, mainly including the Anti-corrosive Aluminum alloy spinning lamp pole,Solar Camera light,Cylindrical Intelligent Street Lamp,No power LED Module .
1.Aluminum alloy spinning lamp pole
The spinning pole is the use of foreign advanced spinning equipment,forming a whole without welding,forming a conical or profiled bar.And then polishing,remove surface oil,burr and indentation.Then after the quenching intensity,to T6 state,in line with international standards.The product never rust ,strong corrosion resistance,diversified surface treatment process,the appearance of simple fluid lines.Light weight and convenient installation and transportation,the rod body can be 100%recycling,low melting temperature.
Product features
â‘ Using spinning equipment advanced,the whole forming a non welding
â‘¡Product permanent does not rust,corrosion resistance
â‘¢Diversified surface treatment technology,make the appearance line succinct smooth
â‘£The light weight,convenient installation and transportation
⑤The rod body can be 100% recycling,melting temperature is low.
2.Camera street light
The camera street light is used to use the infrared network high definition intelligent ball's various features so that it can be widely used in the need of large-scale hd quality control of the site.
Functional properties
â‘ Smart Function:Smart Tracing,Smart Inspecting,Smart Road Monitor
â‘¡System Function:Smart Video,Smart Photo Enhancement
â‘¢Movement Function
â‘£Network Function
3.Intelligent Street Lamp
Intelligent Street Lamps are also called intelligent lighting or smart street lights.It adopts the Internet of things and cloud computing technology to comprehensively upgrade the urban public lighting management system, so as to realize centralized control, operation and maintenance information and intelligent lighting of street lamps.The most advanced versions of Intelligent Street Lamps have been designed to create a happy atmosphere in roads, streets, squares and other places.The design of intelligent street lamps can only be designed by a wide range of discussions and environments that provide an aesthetic consistency.
Product feature
1.Sensor
Monitoring urban environment conditions
Sensor norise
Air pollution sensor
Temperature/humidity sensor
Brightness sensor
Municipal construction monitor
2.RFID
Special crowed monitor
CMC monitor
Community security monitor
Municipal facilities monitor
3.Communication Services
Micro base station
Street lights embedded WIFI hot spot
4.Video Monitor
Security monitor
Vehicle monitor
5.Emergency Broadcast
Active of the external field radio monitoring center
6.Intelligent Lighting
Cellular cooling technology
Based on the luminance uniformity of light distribution
Intelligent single lamp/center controller
Variety of modular design lamp,holder is optional.
7.Information Release
Advertising exposure
Current politics news
Information release
8.Charging Column
Electric car
Electric bicycle
4. Led Module
â— Color temperature 3000-6000K
◠Light≥90LM/W
â— Matching the 2.3.4 lane,tunnel and Landscape Lamp ,floodlight dedicated lens.Ensure that intensity and uniformity.
â— Glare index Signification reduce the original LED module size,removal of power supply problems.Low demands for application situation and installation personnel .More suitable for the transformation of traditional lamps.
Product features
â‘ The solid heat conduction,Plug-in package technology
â‘¡Alternating current method,Alternating current direct drive to overturn the traditional application.
â‘¢Avoid long-distance power.Transfer will have excess loss.
â‘£No power supply ACLED
⑤Customized LED lens
â‘¥Automatic dimming system intelligent.
⑦Wide application,flexible combination.
Aluminum Alloy Spinning Lighting Pole,Lightest Aluminum Alloy,Aluminum Alloy Torchlight,Lightweight Aluminum Alloy Jiangsu chengxu Electric Group Co., Ltd , http://www.chengxulighting.com
