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1、毕业设计摘要红外测温仪是目前最主要的非接触式测温工具。红外测温仪以其响应速度快、准确、便捷、使用寿命长等优势,在纺织、冶金、电子、石化、食品等行业得到广泛应用,成为企业故障检测、产品质量控制和提高经济效益的重要手段。随着现代红外技术的不断成熟和日益完善,利用红外检测的远距离、不接触、准确、实时、快速等特点发展起来的红外检测技术由于在不停电、不取样、不解体的情况下能快速实时地在线监测和诊断大多数故障,可以减少对设备的损害,避免停工停产造成的损失,节约人力和财力,在某些领域还可以减少对人身的危害,对于各行业的现代化有着重要的意义。该系
2、统主要是利用任何物体都会发出红外辐射的原理对纺织工业烘房中布匹的温度进行高精度检测。在该红外测温系统中,红外信号经过光学系统菲涅尔透镜汇聚辐射能量至热释电探测器(光电转换器),辐射能量经过探测器转换后变成电信号,电信号经过滤波、整形和A/D转换成数字信号,由单片机进行数据处理和输出显示。为了保持各部分之间正确的时序关系,软件全部采用汇编语言来编写。关键词:红外测温仪;光学系统;单片机;热释电探测器-47-毕业设计ABSTRACTAsamainwayofnon-contactmeasurement,Infraredthermomet
3、erhasbeenwidelyusedintextile,metallurgy,electronics,petrochemical,foodindustriesandsomeotherareasbecauseofitsfastresponse,accurate,convenient,long-lifeandotheradvantages,ithasbeenamainmethodofcorporatefaultdetection,Productqualitycontrolandimprovingeconomicefficiency.
4、Withcontinuedmatureandincreasinglysophisticatedofmodeminfraredtechnology,infrareddetectiontechnologyisdevelopedbyusinginfrareddetectionfeaturesofthelong-range,non-contact,accurate,real-time,rapid.Infrareddetectiontechnologycanmonitoranddiagnosisofthemajorityoffaultrea
5、l-timeon-lineanditisnotduetothesituationofpoweroutage,sampling,thedisintegration.Sowecanreducethedamageoftheequipment,toavoiddowntimecausedbyproductionlosses,conservationhumanandfinancialresources,someareasalsocanreducetheharmtotheperson,itisofimportantsignificancefor
6、themodernizationoftheindustry.Accordingtotheprincipleofanyobjectcanbesenttoinfraredradiation,thesystemdetectsthetemperaturewithhigh-precisionontheclothofoasthouseintextileindustry.Inthesystemofinfraredradiationthermometer,infraredopticalsystemthroughtheFresnellensgath
7、erradiantenergysignalintopyro-electricdetector(photoelectricswitch),andthenradiationenergyswitchesintoelectricalsignalsthroughtheprobeafterconversion.Andthenafterfiltering,plasticandA/Dconversion,theelectricalsignalswillbeintodigitalsignals,whichwillbeoutputanddisplay
8、edbyMCU,dataprocessing.Inordertokeeptherighttemporalrelationshipsbetweenparts,allthesoftwareiswrittenbytheassemblylanguage.K