基于RS-485总线通信的交通信号控制系统

摘要

Analysing the shortcomings and problems of the existing traffic signal control system ,a traffic signal controlling method based on RS‐485 bus communication and a design scheme with this method are put forward ,and then the hardware scheme of RS‐485 bus communication and its protocol model are pres‐ented here ,the principle of traffic signal control and fault detection is expounded ,the progressiveness in controlling ,the reliability ,flexibility and economy of the application in communication traffic control sys‐tem are proved .%分析现有交通信号控制系统存在的缺点及问题，提出基于RS‐485总线的通信型交通信号控制方法及设计方案，给出实现RS‐485总线通信的硬件方案及协议模型，阐述了信号灯控制及故障检测的原理，说明通信型交通信号控制系统具有的控制先进性、可靠性、应用的灵活性及经济性。