基于单片机的智能交通灯

毕业设计基于单片机的智能交通灯的设计与仿真学生姓名XX学号050910005学院计算机与电子工程学院专业电子信息工程班级电信0501班指导教师XX职称讲师湖南商学院2009年6月湖南商学院本科毕业设计诚信声明本人郑重声明：所呈交的本科毕业设计，是本人在指导老师的指导下，独立进行研究工作所取得的成果，成果不存在知识产权争议，除文中已经注明引用的内容外，本论文不含任何其他个人或集体已经发表或撰写过的作品成果。对本文的研究做出重要贡献的个人和集体均已在文中以明确方式标明。本人完全意识到本声明的法律结果由本人承担。本科毕业设计作者签名：年月日湖南商学院毕业设计内容摘要近年来随着科技的飞速发展，单片机的应用正在不断地走向深入。在实时检测和自动控制的单片机应用系统中，单片机往往是作为一个核心部件来使用，仅单片机方面知识是不够的，还应根据具体硬件结构，以及针对具体应用对象特点的软件结合，加以完善。该文介绍了一个基于单片机的智能交通灯控制系统的设计与仿真，系统能够根据十字路口双车道车流量的情况控制交通信号灯按特定的规律变化。该文首先对智能交通灯的研究意义和智能交通灯的研究现状进行了分析，指出了现状交通灯存在的缺点，并提出了改进方法。智能交通灯控制系统通常要实现自动控制和在紧急情况下能够手动切换信号灯让特殊车辆优先通行。该文还对AT89S52单片机的结构特点和重要引脚功能进行了介绍，同时对智能交通灯控制系统的设计进行了详细的分析。最后介绍了PROTEUS嵌入式系统仿真与开发平台的使用方法，利用Proteus软件对交通灯控制系统进行仿真。关键词AT89S52单片机；智能交通灯控制系统；PROTEUS仿真湖南商学院毕业设计ABSTRACTInrecentyears,withtherapiddevelopmentofscienceandtechnology,theapplicationofsingle-chipmicrocomputeraretodepth.Inreal-timedetectionandautomaticcontrolsystemofsingle-chipapplications,Single-chipisoftenusedasacorecomponent,onlysingle-chipknowledgeisnotenough,Itshouldalsobebasedonthespecifichardwarestructureandapplicationofobject-specificfeaturesofthesoftwaretobeperfect.Thispaperdescribesamicrocontroller-basedintelligenttrafficlightcontrolsystemdesignandsimulation.Systematacrossroadstwo-lanetrafficflowinaccordancewiththesituationincontrolofthetrafficlightchangesaccordingtothelawsofaparticular.Thefirststudy,suchasIntelligentTransportationResearchsignificanceandanalysis,pointoutthatthestatusquooftheshortcomingsoftheexistenceoftrafficlightsandmadethingsbetter.Intelligenttrafficlightcontrolsystemisusuallyinordertoachieveautomaticcontrolandinemergencysituationstomanuallyswitchthesignaltoallowpriorityaccesstospecialvehicles.ThearticlealsoAT89S52MCUpinstructureandimportantfunctionalcharacteristicsareintroduced,atthesametimeintelligenttrafficlightcontrolsystemcarriedoutadetailedanalysis.Finally,simulationandembeddedsystemprotuesdevelopmentplatformtouse,theuseofsoftwareprotuestrafficlightscontrolsystemsimulation.KEYWORDSAT89S52single-chipmicrocomputer;Intelligenttrafficlightcontrolsystem;PROTEUSsimulation湖南商学院毕业设计目录1.绪论..................................................................................................................11.1课题背景....................................................................................................................11.2课题研究意义............................................................................................................11.3国内外研究现状........................................................................................................21.4论文结构....................................................................................................................32.方案论证与设计..............................................................................................42.1课题设计要求............................................................................................................42.2方案选择与比较........................................................................................................42.2.1基于数字电路的交通灯控制系统...........................................................................42.2.2基于PLC的交通灯控制系统...................................................................................42.2.3基于单片机的交通灯控制系统................................................................................42.3总体方案设计............................................................................................................53.硬件电路设计..................................................................................................73.1单片机主控模块设计................................................................................................73.1.1AT89S52介绍...............................................................................................................73.1.2单片机主控电路设计..................................................................................................93.2车辆检测模块设计..................................................................................................103.3信号灯电路模块设计..............................................................................................133.4时间显示电路模块设计..........................................................................................143.4电源电路模块设计..................................................................................................164.系统软件设计................................................................................................174.1主程序设计..............................................................................................................174.2显示程序设计..........................................................................................................184.3紧急车辆中断响应程序设计..................................................................................205.智能交通灯的仿真........................................................................................225.1protues软件介绍.....................................................................................................22湖南商学院毕业设计5.2仿真过程介绍.....................................