摘要
传统的交通控制灯不能实现急车强通的功能,介绍了利用日本松下电工FP1系列PLC对交通信号灯急车的自动控制,同时根据交通灯急车控制的要求和特点,通过分析时序图,对急车强通信号进行了处理,确定PLC的输入输出分配,设计出梯形图.实现了有急车来时,一律强制让急车方向的绿灯亮,使急车放行的要求.通过实验模拟调试,该系统设计符合要求,运行可靠.
The traditional traffic light can not realize the function of emergency vehicle＇s passage. This paper introduces the automatic control of traffic light for emergent vehiches by using PLC of Panasonic FPI series. According to the requirement and characteristics of traffic light control for emergent vehicles,the emergemt vehicle＇s passage signal is disposed by analyzing the time sequence chart,the input and output allocation of PLC is determined and the ladder diagram is designed. It can realize the situation that when there is emergent vehicle, the green light for the passage will be on. This design is simulated and proved to be reliable.
出处
《兰州工业高等专科学校学报》
2009年第1期19-22,共4页
Journal of Lanzhou Higher Polytechnical College
关键词
交通信号灯
梯形图
自动控制系统
可编程序控制器
traffic light
ladder diagram
antomatic control system
programmable logic controller
