sinowatcher-traffic light

  The traffic light is a signal light that controls the traffic operation, generally consisting of red light, green light and yellow light. The red light means stop , the green light means the pass , and the yellow light means the warning   and observation.   O rigin of traffic lights : In 1858, red and blue mechanical wrench-type signal lights with gas as the light source were installed on the main streets of London, England, to direct the passage of carriages. This is the first traffic light in the world. In 1868, British mechanical engineer John Peake Knight  installed the world's first gas traffic light on the square in front of the Houses of Parliament in Westminster, London. It consists of red and green two rotating square glass lanterns, red means "stop", and green means "attention". On its 23rd day of operation, a gas light suddenly exploded, killing a policeman on duty on the spot, and it was canceled.   In 1914, the traffic lights for electrical activa...

Importance’s of traffic signal light to build up road traffic management, reduce the occurrence of traffic accidents, improve road use efficiency and improve traffic conditions. I t ’s suitable for intersections such as crosses and T-shaped intersections. Travel in a safe and orderly manner. The material analysis of traffic signal light housing   given bellow 1.  Common housing materials for traffic lights:   Mainly divided into four categories: 1.1 PC material : 1.2 Die-cast aluminum : 1.3 Profile aluminum material : 1.4 Sheet metal material : 2. Advantages and disadvantages of various traffic signal materials: 1.1 PC material: Advantages : Relatively   low mold cost, light weight, convenient high-altitude operation, good safety, and no need for additional lightning protection measures, one-time molding of the mold, very convenient assembly and installation, waterproof and dustproof the effect is better than the others. If the housing  made of PC raw material ...

Rapid development of urban modernization and the increase   number  of motor vehicles, the possibility  of traffic accidents on Pedestrian  crossings is getting higher and higher. In few  years, while the number of car ownership has gradually increased, the number of deaths in traffic accidents has also risen   slowly , and traffic accidents caused by failure to yield in accordance with regulations have gradually ranked first in the cause of fatal accidents. And the shortcomings of normal   Pedestrian  crossing are becoming more and more clear-cut . Normal   Pedestrian  crossings are just striped Pedestrian  crossings printed on the road with white paint to serve as traffic reminders. However, this normal   Pedestrian  crossing does not throw out  light, and only nearby street lights isn ’ t  enough for drivers driving at night. As a reminder, more advanced and smarter Pedestrian  crossings essentially need...

  Following advantages are given below : 1.  Materials : Ordinary traffic light used  epoxy resin as the mounting board but high flux signal light used aluminum-based circuit boards (MCPCB). 2.  Production process : Ordinary traffic signal light produce by manual welding and  wave soldering but high flux signal lights produce by patch welder. 3.  Electronic component :  Due to different welding process electronic components are matched with ordinary traffic light and also general components ,  so that need to be welded by manua l l y and  wave soldering machine but for the high flux traffic light electronics components are SMD components. 4.  Automation : In order  to different production processes, SMD production has higher degree automation and can be use a modernized production line. I n the other hand ordinary  traffic light   structure of components considerable part of works such as intubation, manual works that ...