基于AT89C51单片机的交通灯系统设计

以单片机AT89C51作为城市交通灯的控制核心,模拟定周期交通信号灯的工作状态;针对复杂多变的路况环境,特别增设了路段遇忙调整、紧急情况处理、特种车检测、语音提示等模块,进一步完善了交通灯控制系统。

The traffic light system design based on AT89C51 single chip

In this design,the control core of the city traffic light is based on MCU AT89C51,the electric circuit is composed of the following modules: the normal indication module of traffic light,the countdown demonstration module,the emergency case processing module,the special type vehicle detect module,the voice hint module and the adjustment to the current traffic module etc.The normal indication module of traffic light are used to indicate the vehicle and the passerby move according to the four traffic rule;The countdown demonstration module can show the left time that the vehicle and the passerby have to wait: the emergency case process module have the function of processing the emergency case controlled by the traffic police;the special type vehicle detect module is using for examining the special vehicle,such as ambulance,police wagon,the voice hint module are used to remind the passerby of danger.The MCU will analyze all the signals and control the traffic light and the countdown demonstration work normally.