【毕业论文】汽车泊车辅助系统的设计

【精品文档】密级公开学号衡水学院毕业论文（设计）汽车泊车辅助系统的设计论文作者：指导教师：系别：：物理与电子信息系专业电子信息工程年级：2013级提交日期：2017年4月18日答辩日期：2017年5月05日【精品文档】毕业论文（设计）学术承诺本人郑重承诺：所呈交的毕业论文（设计）是本人在导师指导下进行的研究工作及取得的研究成果。除了文中特别加以标注和致谢的地方外，论文（设计）中不存在抄袭情况，论文（设计）中不包含其他人已经发表的研究成果，也不包含他人或其他教学机构取得的研究成果。作者签名：日期：毕业论文（设计）使用授权的说明本人了解并遵守衡水学院有关保留、使用毕业论文（设计）的规定。即：学校有权保留或向有关部门送交毕业论文（设计）的原件或复印件，允许论文（设计）被查阅和借阅；学校可以公开论文（设计）的全部或部分内容，可以采用影印、缩印或其他复制手段保存论文（设计）及相关资料。作者签名：指导教师签名：日期：日期：【精品文档】论文题目：汽车泊车辅助系统的设计摘要：目前我国经济正处于发展迅猛时期，汽车也成为了每个家庭必不可少的生活用品。交通问题就成为了我们不可回避的问题，所以停车事故就变成了我们的焦点。停车意外频繁，原因是来源于多方面的，在停车场发生事故的可能性远远大于驾车时发生意外的可能性，而且给司机带来了很多必要的麻烦，不仅在经济上造成损失，在身体上的伤害也很大，如果不小心撞上孩子是难以想象的，所以泊车系统在汽车高科技产品的诞生中，泊车辅助系统不仅可以解决驾驶员由于障碍引起的通过视野停车事故，也大大降低了停车意外的频率。汽车泊车辅助系统，是汽车泊车安全辅助装置，能以声音或者后视镜的显示通告司机车附近的状况，解除了司机泊车和启动车辆时前后左右探视所引起的麻烦，并帮助司机解决由视觉引起的缺陷，提高驾驶的安全性。系统在运行时，超声波发射端口发射脉冲信号，经微控器接收信号并进行处理。超声波距离测量简单，优点是成本低，易于生产，缺点是易受天气影响，测距不太准确。关键词：超声波；STC89S52；1602液晶显示屏【精品文档】TITLE：DESIGNOFCARPARKINGASSISTSYSTEMAbstract:Atpresent,China'seconomyisinaperiodofrapiddevelopment,thecarhasbecomeessentialforeveryhouseholdnecessity.Thetrafficproblemhasbecomeanunavoidableproblemforus,sotheparkingaccidentbecomesourfocus.Parkingaccidentfrequentlycausesfrommanyaspects,thepossibilityofaccidentoccurredinthepossibilityofaccidentsisfargreaterthantheparkinglottothedriverwhendriving,andbringalotofunnecessarytrouble,resultinginthelossofnotonlyineconomy,thebodyisalsoagreatharm,ifaccidentallyhitthechildisdifficulttoimagineso,inthebirthofthecarparkingsystemofhigh-techproducts,parkingassistsystemcannotonlysolvethedriverduetodisordercausedbyvisionparkingaccidents,butalsogreatlyreducetheparkingaccidentfrequency.Thecarparkingassistsystemisacarparkingsafetyassistingdevicewhichcaninformthedriveraboutthesituationnearthelocomotivebythedisplayofthesoundortherearviewmirror,thetroublecausedbythedriver'sparkingandthestart-upofthevehicle,Tosolvethedefectscausedbythevisual,improvethesafetyofdriving.Whenthesystemisrunning,theultrasonictransmittingportsendsoutthepulsesignal.Ultrasonicdistancemeasurementissimple,theadvantagesoflowcost,easytoproduce,thedisadvantageisvulnerabletotheweather,rangingisnotaccurate.Keywords：Ultrasonic;STC89S52Devices;1602LCDScreen【精品文档】目录摘要·······································································································IAbstract·····································································································II1绪论........................................................................................................................................11.1课题研究目的...................................................................................................................11.2课题的研究现状与研究内容..........................................................错误!未定义书签。2泊车系统工作原理与硬件选择............................................................错误!未定义书签。2.1汽车泊车辅助系统工作原理.........................................................................................32.2超声波测距原理.............................................................................................................42.3单片机控制芯片.............................................................................................................52.4超声波接收芯片.............................................................................................................53超声波传感器电路设计........................................................................................................63.1超声波发射电路.............................................................................................................63.2超声波接收放大电路.....................................................................................................63.3报警电路...........................................................................................................................73.4显示电路..........................................................................................................................84软件设计................................................................................................................................94.1超声波发生流程图..........................................................................................................94.2超声波接收中断程序......................................................................................................95系统整体测试与调整..........................................................................................................115.1系统硬件的调试...........................................................................................................115.2系统软件调整................................................................................................................11结语..........................................................................................................................................12参考文献..................................................................................................................................13致谢.............................................................................................................................