STC-89-51单片机交通灯课程设计报告

湖南文理学院课程设计报告课程名称：《单片机原理及应用课程设计》课题名称：交通灯控制器系部：电气与信息工程学院专业班级：自动化09102学生姓名：指导教师：完成时间：2012年6月18日报告成绩：评阅意见：评阅教师日期II摘要随着社会的发展与进步，城市交通灯逐渐成为人们安全出行中很重要的一部分，因此提供一个可靠、安全、便捷的交通灯控制装置有着现实的必要性。综合应用数字电子技术、单片机原理、protel制图等课程方面的知识，设计一个采用STC89C51单片机控制的交通灯控制电路，硬件组成包含了微处理基本应用单元、倒计时电路、指示灯电路。其中微处理基本应用单元包括有STC89C51单片机、复位电路、时钟电路，复位电路可以将单片机状态置于初始状态、时钟电路产生12MHz时钟信号、单片机实现对外来信息的处理；倒计时电路对指示灯的点亮情况进行倒计时；指示灯电路显示各交通灯信号。由KeilC51编写的程序源代码包括主程序、交通灯系统控制子程序、时间中断子程序、数码管显示子程序、指示灯显示子程序等部分。通过单片机实验板的具体实验，达到了预期设计要求。关键词：交通灯；微处理器；倒计时；LEDIIIAbstractAlongwiththedevelopmentofsocietyprogress,thetrafficlightsgraduallybecomeustoliveinveryimportantpartofit,thereforetoprovideareliable,safe,convenienttrafficcontrolsystemisofthepracticalnecessity.Thiscoursedesigncomprehensiveapplicationofdigitalelectronictechnologyandsingle-chipmicrocomputerprinciple,suchasprotelsoftwarecoursestheknowledgeoftherespect,designaSTC89C51usingsingle-chipmicrocomputercontroloftrafficlightcontrolcircuit.Thiscircuitincludemicrobasicapplicationunitandresetcircuitoftheclockcircuitofthecountdowncircuitoftheindicatorlightdisplaysection.Microbasicunitcanbeusedtorealizetheforeigninformationprocessingandresetcircuitofthesinglechipmicrocomputercanbeallstateintheinitialstate,clockcircuitofthe12MHzclocksignal,providecircuitofthecountdowntobrightenindicatoroncountdown,indicatorlightdisplaysectionshowseverytrafficlightsignals.ByKeilC51programsourcecode,includingthemainprogram,trafficlightsystemcontrolprocedure,timeinterruptsubroutines,digitalpipedisplaysubroutines,indicatorshowsthesonofprocedures,etc.ThroughthesimulationexperimentandProteussoftwareSCMexperimentboardexperiment,allcanappeartheexpectedphenomenon,meetthedesignrequirements.keywords:Trafficlights,Microprocessor,Countdown,LEDIV目录摘要............................................................................................................................................IIABSTRACT..................................................................................................................................III第一章概述（综述）.................................................................................................................51.1交通灯控制设计的意义.....................................................................................................51.2交通灯功能（与性能）.....................................................................................................51.3交通灯设计方案.................................................................................................................6第二章交通灯控制系统硬件设计.............................................................................................82.1微处理器基本应用单元.....................................................................................................82.1.1时钟电路........................................................................................................................82.1.2复位电路........................................................................................................................82.2复位部分...................................................................................................错误!未定义书签。2.3时钟电路部分...........................................................................................错误!未定义书签。2.4显示部分.............................................................................................................................82.5路口指示灯部分.................................................................................................................9第三章交通灯软件设计............................................................................................................103.1接口定义（接口描述）..................................................................................................103.2主程序................................................................................................................................103.3交通灯系统控制子程序....................................................................................................103.4时间中断子程序................................................................................................................113.5数码管显示子程序............................................................................................................123.6指示灯显示程序..................................................................................................................12第四章硬件仿真分析................................................................................................................144.1单片机实验开发板仿真平台............................................................................................144.2仿真步骤............................................................................................................................144.3交通灯控制器仿真现象分析............................................................................................14总结............................................................................................................................................17参考文献.........................................................................