基于单片机控制交通信号灯电子设计 大学学位论文.doc

目 录 课程目的与任务················································ 2 1.1设计目的······················································2 1.2设计任务······················································2 设计方案分析················································· 3 2.1电源模块分析··················································3 2.2显示界面分析················································· 3 2.3总体界面分析················································· 3 主要元件介绍·················································· 5 3.1 单片机介绍··················································· 5 3.2 发光二极管介绍··············································· 7 3.3 LED数码管介绍··············································· 8 3.4 反相器介绍··················································· 8 3.5 晶振介绍····················································· 9 硬件电路······················································ 10 4.1 时钟电路····················································· 10 4.2 复位电路····················································· 10 4.3 交通灯电路·················································· 10 4.4 LED数码管电路················································11 4.5 按键电路····················································· 12 4.6单片机最小系统··············································· 12 软件设计····················································· 14 5.1 程序流程图··················································· 14 5.2 主要模块程序················································· 15 主要问题······················································ 18 总结·························································· 20 附录一：元件清单·····················································22 附录二：总电路图·····················································23 附录三：总程序·······················································24 附录四：参考文献·····················································34摘 要 随着科技和经济的发展，汽车已然成为了人们出门旅行的必备工具。但是随之而来的就是交通拥堵和交通事故频繁发生的问题，而且交通事故造成的人员死亡率颇高，这使得交通部门及相关部门非常棘手。因此，诞生了城市交通管理系统，它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，是现代城市交通监控指挥系统中最重要的组成部分。 方案一采用独立的稳