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学术诚信承诺本人郑重声明：所呈交的论文是我个人在导师指导下进行的研究工作及取得研究成果。尽我所知，除了文中特别加以标注和致谢的地方外，论文中不包含其他人已经发表或撰写的研究成果，也不包含为获得佳木斯大学或其他教育机构的学位或证书所使用过的材料。与我一同工作的同志对本研究所做的任何贡献均已在论文中做了明确的说明并表示了谢意。签名：___________日期：____________关于论文使用授权的说明本人完全了解佳木斯大学有关保留、使用学位论文的规定，即：学校有权保留送交论文的复印件，允许论文被查阅和借阅；学校可以公布论文的全部或部分内容，可以采用影印、缩印或其他复制手段保存论文。签名：___________导师签名：___________日期：____________佳木斯大学本科毕业论文（设计）第I页摘要现代科学技术的发展，出现了很多新领域，而在测距方面先后出现了激光测距、微波雷达测距、超声波测距及红外光测距。我们为了实现物体近距离、高精度的无线测量而采用了红外发射接收模块作为距离传感器，单片机作为处理器，编写A/D转换和显示程序，完成了一套简易的家用红外距离测量系统设计，系统可以高精度的实时显示所测的距离，本系统结构简单可靠、体积小、测量精度高、方便使用。红外测距的探测距离远近皆宜，通常在几厘米到几米之间，超声波测距仪受外界因素干扰较多，很难做到厘米级别的精度。激光红外一般用光速时间差方法，因光速太快，时间差太小于较远距离的，高达几十米到几公里距离，短距离则精度较低。本文介绍的红外测距系统是一种基于STC89C52单片机设计的红外测距仪，可以直接快速测量出具体距离数据。首先，介绍了红外传感器和本课题相关内容，如传感器的分类、区别。其次是对STC89C52单片机的应用与A/D转换应用。分析其工作原理与基本结构。硬件电路设计和软件流程设计的介绍。在红外测距系统硬件设计中，提出了构想和可行的方案，根据其绘画出硬件电路原理图，整个程序工作的流程及各程序设计。最后是对整个系统设计的测试及总结。关键词：红外测距；STC89C52单片机；A/D转换；LCD显示佳木斯大学本科毕业论文（设计）第II页AbstractThedevelopmentofmodernscienceandtechnology,intoalotofnewareas,andsuccessivelyappearedinrespectofranginglaserranging,microwaveradarranging,ultrasonicandinfraredrange.Atcloserange,highprecisioninordertoachievetheobjectofwirelessmeasurementwhileusingtheinfraredreceivingmoduleasdistancesensor,singlechipastheprocessor,writeA/Dconversionanddisplayprogram,completedAsetoftheinfrareddistancemeasurementsystem,thenpushthesystemcanreal-timedisplayofhigh-precisionmeasuringdistance,thesystemstructureissimpleandreliable,smallvolume,highmeasuringaccuracy,easytouse.Infraredrangeissuitableforthedetectionofdistance,usuallybetweenseveralcentimeterstoseveralmeters,ultrasonicrangefinderbyoutsidefactorsinterferenceismore,it'shardtodocentimeterlevelaccuracy.Laserinfraredgenerallytimedifferencemethodwiththespeedoflight,becauseofthespeedtoofast,timeislessthanthemoredistant,ashighasdozensofmeterstoseveralkilometersdistance,shortdistance,lowprecision.ThispaperintroducesthethirdtypeofinfraredrangefinderbasedonSTC89C52,whichcanmeasurethespecificdistancedatadirectly.Firstly,thispaperintroducestheinfraredsensorsandtherelevantcontentofthesubject,suchastheclassificationandthedifferenceofthesensor.Second,theapplicationoftheSTC89C52singlechipmicrocomputerandtheA/Dconversionapplication.Analyzeitsworkingprincipleandbasicstructure.Introductionofhardwarecircuitdesignandsoftwareprocessdesign.Ininfraredrangingsystemhardwaredesign,andputsforwardtheideaandfeasiblescheme,accordingtothedrawingoutofthehardwarecircuitprinciplediagram,theprocessworkingprocessandtheprogramdesign.Finally,atestandsummaryoftheoverallsystemdesign.KeyWords:infraredranging;STC89C52singlechipmicrocomputer;A/Dconversion;LCDdisplay佳木斯大学本科毕业论文（设计）第III页目录摘要..........................................................................................................................................IAbstract...........................................................................................................................................II第1章绪论.................................................................................................................................11.1课题的目的和意义........................................................................................................11.1.1课题的目的.........................................................................................................11.1.2课题的意义.........................................................................................................11.2课题背景........................................................................................................................11.3文献综述........................................................................................................................21.3.1国外研究热点及发展现状.................................................................................21.3.2国内研究热点及发展现状.................................................................................21.4本领域存在的问题........................................................................................................31.5本课题主要研究内容....................................................................................................3第2章系统总体方案设计.........................................................................................................42.1方案及设计思想............................................................................................................42.2元器件选择....................................................................................................................52.2.1单片机选择.........................................................................................................52.2.2A/D转换器选择..................................................................................................52.2.3LCD模块选择....................................................................................................52.3红外测距系统的基本结构............................................................................................5第3章硬件电路设计.......................................................................................................