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摘要介绍基于AT89S52单片机的一款停车场自动停车收费管理系统，该自动停车收费系统采用比传统停车计费方式更优越的红外线检测计费方式，采用红外线检测计费方式，所需存储容量小，具备了自动开启关闭大门功能、自动计费功能、显示功能(显示停车场状况)、查询功能，而且收费方式可以调节，使系统更具灵活性。该自动停车收费系统操作简单，价格低廉，安装调试方便，很好地解决了临时停车场的管理收费问题。整个自动停车收费管理系统操作简单、价格低廉、安装调试方便，能够满足管理临时停车场的要求。本系统的实际开发使用将大大节省临时停车场的管理费用及人手，提高临时停车场的利用效率。此外，该自动停车收费管理系统还可以方便地实现信息加密和各种功能扩展，通过改进可成为通用型停车场收费管理系统。关键词：单片机；停车场；自动停车收费系统ABSTRACTThemanagementsystemintroducingthatonemoneyparkinglotautomationmotorstoppageofmonolithicmachinechargesowingtoAT89S52,isthesystemparkingvoluntarilycharging'sturntoadopttheplanparkingratiotraditiontowastemoreadvantageouswayinfraredraydetectingplanfeeway,adoptinfraredraytocheckplanfeeway,requiredmemorycapacityhasbeensmall,havehadthefunction(situationdemonstratingparkinglot),inquiryfunctionopeningautomaticallyclosingtheentrancedoorfunction,theautomationmeterfeefunction,showing,andchargewayisnotbadadjust,makeflexibilityhavemoresystematically.Thatautomationmotorstoppagechargessystematicallyhandlingasimplicity,priceischeap,theinstallationdebugginggoestothelavatory,problemhavingresolvedchargeforprovisionalparkinglotadministrationverygood.Chargeforentireautomationmotorstoppagemanagesthesystemoperationsimplicity,priceischeap,assemblesadebuggingtogotothelavatory.Beabletosatisfythecallformanagingprovisionalparkinglot's.Originallysystematicrealitydevelopsadministrationcostandhandbeingputintousewilleconomizeprovisionalparkinglotgreatly,improvesprovisionalparkinglotutilizationratio.Besides,bethemanagementsystemparkingvoluntarilycharging'sturntobeabletorealizeencryptedandvariousinformationfunctionexpansionconveniently,chargeforparkinglotmanagessystembyimprovingbutbecomingthetypebeingappliedoruseduniversally.KeyWords：Monolithicmachine;Parkinglot;Chargeforautomationmotorstoppageissystematic目录1引言................................................................................................................................12课程任务........................................................................................................................32.1系统框架.................................................................................................................32.2工作流程.................................................................................................................43主要的功能元器件介绍................................................................................................53.1元器件介绍..............................................................................................................53.1.174LS138.........................................................................................................53.1.2LM358............................................................................................................63.2LED显示部分.........................................................................................................73.2.1LED显示器...................................................................................................74单片机AT89S52简介...................................................................................................84.1AT89S52的引脚及功能..........................................................................................84.1.1I/O口：..........................................................................................................94.1.2P3口的第二功能.........................................................................................104.2特殊功能寄存器...................................................................................................104.2.1看门狗定时器.............................................................................................114.2.2定时器2.....................................................................................................125程序设计......................................................................................................................165.1如何进行程序设计...............................................................................................165.2程序流程图...........................................................................................................165.3系统程序...............................................................................................................17结论.............................................................................................................................24参考文献.............................................................................................................................25附录一：电路原理图.......................................................................................................26致谢................................................................................................错误!未定义书签。天津工程师范学院2009届本科生毕业设计11引言随着经济的高速增长，汽车的社会拥有量不断增加，越来越多的人加入了购车行列，私家车的数量越来越大，汽车停车场的数量将随之增加，规模不断扩大，这给停车场的车辆管理系统(停车效率、停车安全)提出了新的挑战。汽车数量的剧增和停车场地的相对短缺，使得停车场的管理收费问题凸现。特别是大型超市的临时停车场管理收费更加困难。该停车收费系统操作简单，价格低廉，安装调试方便，很好地解决了临时停车场的管理和收费问题。目前的停车场收费管理系统通常采用以下几种计费方式：(1)摄像计费方式：在停车场出口和入口分别放置一台摄像机，通过出入口的摄像机摄下汽车车牌号码，送单片机或者电脑处理。再通过单片机计算停车时间和费用，并控制大门开启。该方