基于单片机控制交通灯_毕业设计论文.doc

PAGE 1 江苏农牧科技职业学院 毕业设计（论文） 题目： 基于单片机控制交通灯 二级院系部： 机电工程系 班级: 应用电子10 专业： 应用电子技术 二〇 一三 年 五 月 江苏农牧科技职业学院论文（设计） PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT III 【摘要】 随着全球城市化进程的加快,机动车的使用数量也越来越多,造成了城市交通上的各种问题,如何控制好城市的交通已经成为一个全球化的问题。交通灯的出现使交通得以有效管制,对于疏导交通流量,提高交通通行能力,减少交通事故有明显效果。本设计利用单片机8051为核心部件,外加定时器﹑复位电路﹑晶振电路﹑显示电路设计一个比较符合交通规则的模拟交通灯。设计中通过LED七段数码管作为计时显示用,用发光二级管指示车辆的通行,定时器工作于方式一并定时50ms,配合软件计时器调用中断程序,中断程序设置20次,从而达到1s的定时,同时调用显示程序,显示倒计时的时间。本交通灯系统简单﹑实用性强﹑成本低使用维护方便,软件功能强,运行稳定﹑可靠的特点。 【关键词】 单片机；交通灯；定时器 Abstract As the global urbanization speeding up, the number of motor vehicles more and more, caused the various problems of urban traffic, how to control the urban traffic has become a global problem. The emergence of the traffic light is able to effectively control the traffic, for facilitating traffic flow, improve the traffic capacity, reduce traffic accidents have obvious effect. I pick made traffic lights project, analysis of the problems of modern urban traffic control and management status quo, combined with the actual situation of urban and rural traffic illustrates the working principle of traffic light control system, this design 8051 microcontroller as the core components, plus timer, reset circuit, crystals circuit, display circuit design a simulation traffic light compared with the traffic rules. Through the design of LED display with seven segment digital tube for timing, using leds indicate vehicle traffic, timer timing 50 ms, along with all the work on ways to cooperate with software timer calls interrupt program, interrupt program set up 20 times, so as to achieve the timing of the 1 s, at the same time call display program, display the countdown time. This traffic light system is simple, strong practicability, low cost, convenient in operation and maintenance, software function is strong, stable running, reliable characteristic. Key Words single ch