基于单片机的交通信号灯控制设计

基于单片机的交通信号灯控制设计摘要最近十年以来，随着科技和国家经济实力的不断发展，单片机进入大众视野，同时引起了传统的控制技术的更新。在千千万万的控制技术中，单片机经常作为一个中心部件来使用，但只是知道单片机的理论是不足的，还要将硬件与软件结合起来才完整。汽车数量的增加，道路拥挤现象的出现。交通拥堵已经成为一个迫在眉睫的问题，那么，在十字路口，人们是怎么做到的？这是一个自动控制交通信号的指挥系统。介绍一种以单片机为核心的交通信号控制系统。该系统以MCS-51系列AT89S52为控制器，通过8051P3端口设置红、绿灯亮起的时机，在倒数还有3秒的时候发出警报。本设计的完成时间短、具有很强的可靠性、便于操作。关键词：AT89S52单片机：交通灯：MCS-51系列DESIGN OF TRAFFIC SIGNAL CONTROL BASED ONSINGLE CHIP MICROCOMPUTERAbstractIn the past ten years,the scientific and technological personnel have successivelyfollowed the economic forces of our country,the single-chip computer has entered the publicview,while causing the update of the traditional control technology.microcontrollers haveentered the public eye,while causing the update of traditional control technology.Inthousands of control technologies,microcontrollers are often used as a central component,butonly know that the theory of microcontrollers is insufficient,but also the combination ofhardware and software is complete.The number of cars is on the rise and congestion is on therise,and congestion has become a direct problem,so what do people do at theintersection?This is a command system that automatically controls traffic signals.A trafficsignal control system is introduced.The system uses the MCS-51 series AT89S52 as thecontroller,red and green lights cycle on,in the countdown to 3 seconds to issue an alarm.Thisdesign has a short completion time,high reliability and easy operation.Keywords:AT89S52 single chip microcomputer;traffic lights;MCS-51 series目录1绪论31.1课题研究背景及意义…。.31.2研究现状31.2.1国内外交通系统发展现状31.2.2城市交通的作用。41.3论文研究的主要内容.….42系统的总体设计…62.1交通信号系统.62.1.1信号控制方式的分类.62.1.2交通规则介绍……62.1.3交通信号灯的硬件配置72.1.4常用交通标志简介.72.1.5交通信号控制原理.82.2需求分析….82.3设计内容及要求.92.4开发环境以及软件.92.5设计思路.93方案的比较、设计和论证103.1供电计划103.2显示界面方案103.3输入方案103.4系统设计3.4.1硬件系统组成框图113.4.2单片机介绍................113.4.3晶振电路介绍…133.4.4复位电路介绍…133.4.5数码管显示电路介绍14