基于PROTEUS的交通灯毕业设计论文

I摘要交通大系统是社会经济的“血液循环系统”，是制约经济发展的瓶颈。研究交通问题具有重大的理论和现实意义，为此交通问题吸引了众多学者的注意．交通问题也是运筹学中研究的重要问题之一，它越来越受到运筹学家的重视，尤其是近年来人们发现物流是另外一条节约成本的重要途径，是“第三利润源泉”之后更是如此．在交通方式中有一个重要的方面，那就是城市内部的交通问题。随着社会生产力的不断发展和人类社会的不断进步，各国特别是像我国这样的发展中国家城市化水平会越来越高，城市交通问题会越来越严重，严重的堵车现象是每个人有目共睹和亲身体验的。究其原因，主要有：或是现行路网的通行能力不够，或是现行路网的道路定向不合理，或是由于对交通流的管理控制不力。解决城市交通问题的根本途径有两条：一是加快交通设施建设；二是加强交通管理。然而在城市内修建或扩建已有道路的可能性越来越小，因而加强对现有道路的合理利用以及对交通信号灯的有效控制和管理成为改善交通状况的重要途径．本文提出的基于PROTEUS的交通信号灯设计系统以单片机（STC89C52）为核心，信号灯，计数器，数字显示电路等几部分组成。该系统大部分功能通过硬件来实现，电路简单明了，系统稳定性很高。全文针对整个实验系统，首先介绍了作为实验系统软件平台的Proteus，叙述其功能，分析选择其作为软件平台的可行性和优越性。接着Proteus对单片机及单片机外围电路进行仿真，程序的变化在仿真元件的性质变化上得到体现；实验原理得到诠释，原理图设计公开化，实验原理容易理解，Proteus与Keil的联调将硬件仿真的过程完美展现。关键词:STC89C52、交通灯、PROTEUS、KEIL、改善交通IIAbstractTrafficbigsystemissocialandeconomicbloodcirculationsystem,isthebottleneckofrestrictingeconomicdevelopment.Studythetrafficproblemisofgreattheoreticalandpracticalsignificance,thereforethetrafficproblemattractedmanyscholarsattention.Thetrafficproblemisalsoastudyinoperationsresearchoneoftheimportantproblems,ithasbeenmoreandmoreattentionofthehouseofoperationsresearch,especiallyinrecentyears,peoplefoundthatlogisticsisanothercostsavingsinamajorway,isthethirdprofitssourceafterisevenmoreso.Inthetrafficinthewayisaimportantaspects,thatiswithinthecitytrafficproblems.Withthecontinuousdevelopmentofthesocialproductiveforcesandthehumansocietyadvances,especiallyincountrieslikethatdevelopingcountrieswillmoreandmorehighlevelofurbanization,theurbantransportationproblemwillbemoreandmoreserious,serioustrafficjamphenomenonisobvioustoeveryoneandexperience.Investigateitsreason,basicallyhave:orthecurrentnetworktrafficcapacityofno，Enough,orthecurrentnetworkofdirectionalnotreasonableway,orbecauseoftrafficflowmanagementcontroleffectively.Solvetheurbantraffictherootoftheproblemtherearetwoways:oneistoacceleratetheconstructionoftrafficfacilities;Twoistoimprovetrafficmanagement.Howeverinthecityhasbeenbuiltorexpandedthepossibilityofroadmoreandmoresmall,sostrengtheningtherationalutilizationofexistingroadsandtrafficlightsontheeffectivecontrolandmanagementhasbecomeanimportantwaytoimprovethetraffic.InthispaperbasedonthePROTEUSoftrafficlightsonthesinglechipcomputerdesignsystem(STC89C52)asthecore,lights,counter,digitaldisplaycircuittowaitforafewparts.Thesystemfunctionthroughthehardwaretoimplementmost,circuitissimpleandclear,thesystemstabilityisveryhigh.Fulltextforthewholeexperimentsystem,firstintroducedtheexperimentalsystemassoftwareplatformfortheProteus,describesitsfunction,analyzeandselectitsasasoftwareplatformiseffectiveandfeasible.ThentheSCMandProteusmicrocontrollerperipheralcircuitsimulation,theprogram'schangeinthenatureofthesimulationcomponentchangeswerereflectedon;Experimentprinciplegettheinterpretation,diagramdesignopenexperimentprincipleeasytounderstand,ProteusKeilandthealignmentofthehardwaresimulationprocesswillbeperfectshow.Keywords:STC89C52,trafficlights,PROTEUS,KEIL,improvetrafficIII目录摘要.............................................................................IABSTRACT........................................................................II目录.........................................................................III第一章设计背景及设计意义........................................................11.1引言........................................................................11.2设计背景及意义..............................................................11.2.1交通灯的历史及出现.......................................................................................11.2.2单片机的发展历程和优点...............................................................................21.2.3单片机设计交通灯的背景及意义...................................................................3第二章系统方案设计..............................................................42.1功能设计要求................................................................42.2系统方案确定................................................................42.2.1方案比较、设计与论证..................................................................................42.2.2方案确定...........................................................................................................6第三章交通信号灯系统硬件电路设计................................................73.1硬件部分的简介..............................................................73.1.1STC89C52的简介..........................................................................................73.1.2元器件的选择...................................................................................................93.2硬件电路设计...............................................................113.2.1各模块接口电路.............................................................................................113.2.2交通信号灯系统硬件电路设计.....................................................................13第四章交通灯控制系统软件设计..................................................154.1单片机编程语言.............................................................154.1.1单片机编程语言分类及特点.........................................................................154.1.2C语言的指令格式.................................