Yizheng Yanjiang Expressway is located in the eastern part of Yizheng City. It is the main thoroughfare to Yangzhou City and Zhenjiang City. It connects Yizheng City, Yizheng Economic Development Zone and Guazhou Ferry, and belongs to a secondary road. The company has carried out LED streetlight renovation on this road. Let's share with you the experience of this transformation.
　 Lighting Disadvantages in Yizheng Expressway
Yizheng Yanjiang Expressway starts from Yizheng Siyuangou Bridge to Yangshan in the east, with a total length of 14.7km. There are also non-motor vehicle lanes on both sides of the two-way four-lane road. There are street lamps on both sides of the road. The height of the lights is 12 m and the distance between the street lamps is 60m. , two-way staggered lights, a total of 470 street lights, are 250W high pressure sodium lamps.
However, the original sodium lamp has many drawbacks in night lighting effects, which mainly include:
1. Because the ratio of the distance between the poles and the height of the single pole is too large, the road surface is obviously bright and dark;
2. After field measurement, according to the national urban motorway road lighting design standard (CJJ45-2006), the average illuminance of the road surface cannot meet the requirements;
3, the dim of the road surface, affecting the visual recognition of objects, causing inconvenience to pedestrians and vehicles.
Difficulties in the transformation
On the basis of the original sodium lamp, Shifu Company carried out the LED street lamp transformation according to the actual situation on the spot. Since the installation height of the lamp post and the length of the lamp arm have been fixed, the factors that can be adjusted for the road lighting are reduced as follows:
1. The ratio of the distance between the lamp and the height of the lamp is too large, which affects the uniformity of the road surface;
2. The height of the pole and the length of the lamp arm are fixed, which means that there is no longer the installation mode and angle adjustability of the lamp;
3. Due to the large spacing of street lamps, the illumination area of ​​single lamps increases, and the average illumination cannot be guaranteed.
The choice of lamps in the transformation
According to the particularity of the actual situation, the company chose the 901 series of street lamps. The 901 series of street lights have the following advantages:
1. The 901 series street lamps adopt modular design. Each module can adjust the projection angle according to the actual situation. When the lamp arm is fixed, the light exit angle of the lamp can still be adjusted.
2. The exit angle of the 901 series street lamps reaches more than 140 degrees. When the distance between the poles is relatively large, the uniformity of the road surface is still guaranteed;
3, unique anti-glare design and LED street lamp unique lighting characteristics, good to avoid the occurrence of glare;
4, 901 module street lamp power selection 210W, light source luminous efficiency above 100lm / W, to ensure the lighting effect of the road surface;
Figure: Comparison of lighting effects before and after renovation 
case analysis
On the basis of the original high-pressure sodium lamp, the transformation of LED street lamps will be an important part of future road lighting. Due to the limitation of conditions, the quality of lighting effects should be improved. Compared with the flexibility and diversity of new roads, it will definitely be Higher requirements are placed on LED lamps. After the completion of the renovation of the LED street lights along Yanjiang Expressway in Yizheng City, the visual comfort level has also been significantly improved.
Edit: Sophy
Â
Hemeixin PCB has extensive experience in Ball Grid Array Assembly (BGA), using the most current BGA placement and X-ray inspection equipment. It has been providing BGA assembly, PBGA PCB Assembly, BGA PCB Assembly ,TBGA PCB Assembly, FPGA PCB Assembly , CGA PCB Assembly and LGA PCB Assembly Services in EMS industry for 10 years.
We specialize in Quick turn PCB services with an industry leading turnaround time as fast as 72 hours.
BGA PCB Assembly
QFN PCB Assembly,Ball Grid Assembly,Ball Grid Array Assembly
Hemeixin Electronics Co.,Ltd. , http://www.rigidflex-pcb.com