Tunnel led light control system based on ZigBee wireless networking

CHENG Tian1， YAN Qian-jun2
（1. Department of Instrumentation Science， Zhejiang University， Hangzhou 310027， China；
2. HangKe Optoelectronics Joint Stock Co.，Ltd.， Hangzhou 310000， China）

Abstract： Aiming at the singleness of current tunnel lighting control system，routing difficulty and blinding control of the tunnel lighting brightness would bring danger for safety. A tunnel LED control system which used ZigBee wireless networking based on cluster tree structure was designed，in which the embedded structure was the core，and an user interaction interface was designed by QT. The system had three control mode which were manual mode，automatic mode and timer mode，the tunnel was divided into five sections：entrance section，entrance transition section，middle section，exit section，exit transition section. The lighting by tunnel section was controlled，to make automatic lighting rules based on vehicle speed，vehicle flow and the brightness of the tunnel which were collected in a certain time by environmental parameter collector. The ZigBee was used to communicate with tunnel section controller.The results indicate that the system is easy to make system networking，less routing and the data transmission is reliable.
Key words： LED； tunnel light； lighting rules； embedded system； ZigBee； control system