吉林建筑大学城建学院电气信息系课程设计-I-摘要本论文阐述的是电涡流式金属板材测厚仪的设计。本课题利用电涡流传感器、单片机系统设计出一种金属板材测厚仪，它能实现不同金属板材的厚度测量、厚度合格检验及其超标报警，通过键盘进行待测金属板材种类输入、厚度合格检验时的设定厚度和误差等级设置，并用LED显示，给出合格检验时超标与否的指示灯提示及蜂鸣超标报警提示。本系统由两部分组成：硬件系统和软件系统。硬件系统利用电涡流传感器及其测量电路测量不同材质和厚度的金属板，得到不同电压，经放大后进行模数转换输入单片机。单片机通过软件编程对被测数据进行相关处理，结果送往LED显示器进行显示，并外接蜂鸣器和指示灯实现超标报警。软件系统用汇编语言进行编程，采用模块化设计思想。该系统通过联调后，实现了预期各种功能，符合设计要求。关键词：电涡流传感器；金属板材测厚仪；合格检验；单片机；LED显示吉林建筑大学城建学院电气信息系课程设计-IIAbstractThispaperintroducesthedesignofmetallicmaterialthicknessbasedoneddycurrentsensor.Thetaskuseseddycurrentsensor,SingleChipMicyocosystemtodesignmetallicmaterialthicknessmeter.Thesystemcanrealizethefunctionsofthicknessmeasurement,passexaminationanditsoverrunalarm.Theinputofthequalityofmetallicplankingtobemeasuredthepresetingofobjectthicknessanderrorgradewhenpassexaminatingallcanbedonethroughkeyboard.TherelativeinformationisdisplayedonLEDreadtine.Whenpassexaminating,buzzerandlightpromptingofoverrunornotaregiven.Thesystemdesigncontainstwoparts:hardwaredesignandsoftwaredesign.Thehardwaresystemuseseddycurrentsensoranditsmeasuringcircuittomeasuredifferentkindofmetallicplankingstogetdifferentvoltagevalue.Afteramplified,thevoltageistramcformedtodigitalsignalandthenissenttoSCM.Throughsoftwereprogramming,themeasureddataisprocessedandtheresultisdisplayedonLEDinSCMsystem.Theoverrunalarmisrealizedbybuzzerandlightindicator.Assemblelanguageisusedinthesoftwaresystemandmodularizationdesignideaisadopted.Thissystemrealizesalldesiredfunctionsandcoincideswithdemandaftersystemdebugging.Keywords:eddycurrentsensor;plankingthicknessmeter;passexamination;SingleChipMicyoco;LEDdisplay吉林建筑大学城建学院电气信息系课程设计-III目录摘要...................................................................IAbstract..............................................................II第1章绪论............................................................11.1测厚仪的简介.................................................11.2电涡流传感器测厚原理..........................................2第2章金属板材测厚仪的硬件系统设计....................................32.1金属板材测厚仪的硬件设计方案...................................................................32.2传感器及其测量电路的设计.....................................42.3放大电路的设计...............................................52.4单片机系统电路的设计.........................................52.4.1单片机的选择..............................................52.4.2单片机外围电路的设计......................................82.4.3键盘电路的设计...........................................102.4.4数据采集电路的设计.......................................112.4.5显示电路的设计...........................................122.4.6报警电路的设计......................................................................................14第3章电涡流式金属板材测厚仪的软件系统设计......................................................163.1测厚仪的软件设计方案........................................163....
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