PLC在交通信号控制系统中的应用

随着我国城市化和现代化建设的迅速发展,交通问题成为社会经济发展的一个大问题。原有的信号灯定时控制方法已经无法满足越来越拥堵道路的需求。城市道路交通信号PLC智能控制系统运行可靠、操作简便、应用范围广,能够有效降低车辆延误及停车的次数,缓解道路交通拥堵情况。本文基于S7-200系列PLC控制系统,根据时间指令将24小时分为:白天控制与夜间控制两个时间段,并运用了实时检测、判断延时,实现交通灯信号的智能控制,有效缓解交通高峰期的压力和主干道路口的拥挤现状,推动我国城市道路交通信号灯控制系统的科学化、智能化发展。

Application of PLC in traffic signal control system

With the rapid development of urbanization and modernization in China,traffic problem has become a big problem of social and economic development.The original signal timing control method can not meet the needs of more and more congested roads.The PLC intelligent control system of urban road traffic signal runs reliably,operates easily,and has a wide range of applications,which can effectively reduce the number of vehicle delays and stops,and alleviate road traffic congestion.Based on S7-200 series PLC control system,according to the time order 24 hours can be divided into:control two control during the day and night time,and using the real-time detection,judgment,latency,realize the intelligent control of traffic light signals effectively relieve the pressure on rush hour traffic and the congestion status of main road intersection,promoting scientization of Chinese urban road traffic signal lamp control system,intelligent development.