文档介绍：毕业设计说明书交通信号灯 PLC 控制系统的设计专 业电气工程及其自动化学生姓名班 级 Z 电气 111 2 交通信号灯 PLC 控制系统的设计摘要:在路口设置交通灯能够对交通繁忙和拥堵进行有效的疏通,还可以使交通参与者的权利得到强有力的保障。目前我国城市中的交通信号控制系统都比较死板,不存在智能处理的功能。当前的交通灯采用传统的计时器作为控制核心,这种交通信号系统存给交通行驶带来诸多的不便。该设计采用 PLC 控制核心,实现交通信号灯的时间参数设置和倒计时显示。同时可以根据实际的交通情况,解决交通繁忙和交通堵塞的问题,使得整个交通控制最优化。考虑到原来交通信号灯的弊端和设备的缺点与局限性,该设计采用可编程序控制器 PLC 进行整体控制,其主要原因是考虑到 PLC 具有操作简单易懂而且方便维修、性能可靠、编程灵活通用、体积小且使用寿命很长等一些的优点。在可靠性方面得到很大的提升,硬件设备的故障率减少,更重要的是实现了智能控制,根据实际需要更改放行时间参数,合理确定各路口交通信号灯之间的时间差,以及白天和夜晚两种模式的切换和快速时间调整,使控制系统变得更加便捷、灵活,有效的缩短了行驶车辆的等待时间,大大的提高十字路口的利用率,逐步实现科学化的管理。这样一个智能化的交通控制系统对城市现代化的建设有着很重要的意义。关键字: 交通事故; PLC ;交通信号灯;智能化;控制系统盐城工学院本科生毕业设计说明书( 2015 ) Design of Traffic Light Control System based on PLC Abstract: The installation of traffic lights at the junction with heavy traffic and congestion able to effectively clear, you can make right traffic participants get strong protection. At present, China's urban traffic signal control system are relatively rigid, intelligent processing function does not exist. Current traffic lights with traditional timer as the control, this traffic signal system memory to traffic with a lotof inconvenience. The design uses a PLC control core, realize the time parameter set of traffic lights and countdown display. At the same time according to the actual traffic conditions, heavy traffic and congestion solving problems, making the traffic control optimization. Considering the ings and limitations of the original traffic signal lights and the malpractice of the equipment, the design of the programmable controller PLC integrated control, the main reason is considered to the PLC has simple operation and convenient and reliable performance, programming flexibility, small volume and the use of life is very long, some of the been greatly improved in reliability, the hardware equipment failure rate is reduced, the more important is to realize the intelligent control, according to the actual need to change the release time parameters, reasonably determine the time dif