行人横过公路交通灯PLC控制系统设计

摘要

This paper proposes traffic lights working principle of pedestrian crossing the road, including the hardware structure and detalled control program of PLC system, analyzes the basic idea of program design. It is of significance for practical application of traffic lights.%提出了行人横过公路交通灯动作原理，给出了用PLC实现这一动作的硬件组成及详细的控制程序并分析了程序设计的基本思路，对于交通灯的实际应用有一定指导意义。