重庆大学网络教育学院毕业设计（论文）题目基于单片机的交通信号灯控制系统设计学生所在校外学习中心四川达州校外学习中心批次层次专业092专科起点本科电气工程及其自动化学号W09205801学生邓军指导教师黄艳起止日期2011年9月1日起至2011年11月30日止摘要随着社会经济的发展，城市交通问题越来越引起人们的关注。人、车、路三者关系的协调，已成为交通管理部门需要解决的重要问题之一。城市交通控制系统是用于城市交通数据监测、交通信号灯控制与交通疏导的计算机综合管理系统，它是现代城市交通监控指挥系统中最重要的组成部分。随着当今社会的迅速发展，汽车的销售量有了很大的提高。大量汽车的出售，给我们的生活带了很大的便利。但是，它也给城市的交通提出了更加严峻的考验。在这种情况下，我们除了要修建更加好的道路外，还需要设计出更多更好的交通信号灯控制系统。在现代，利用单片机来实现交通信号灯的控制成了我们调控交通的主流。运用单片机控制交通信号灯方便，性能高，易于控制。所以，我们很必要对这一课题进行一次系统的研究学习。在本次毕业设计中，我的主要设计任务是在一个十字路口设计一个交通信号灯，并用单片机进行合理的控制。本系统由AT89C51单片机、键盘、LED显示、交通灯演示系统组成。系统包括人行道、左转、右转、以及基本的交通信号灯的功能。系统除基本交通信号灯功能外，还具有倒计时、时间设置、紧急情况处理、分时段调整信号灯的点亮时间以及根据具体情况手动控制等功能。关键词：单片机，交通信号灯Ⅰ1目录中文摘要·····································································································Ⅰ1.引言········································································································12.设计任务及思路························································································13.单片机·····································································································33.1单片机简介·····························································································33.2单片机基本结构·····················································································33.3单片机硬件特性·····················································································34.芯片的选择······························································································44.174LS373以及74LS07芯片简Ⅰ2介···································································44.28255芯片·······························································································54.2.18255可编程并行接口芯片简介······································...
