安徽工业大学毕业论文摘要到目前位置，我国的温度测量仪器仍然是以水银温度计为主，这种测量仪器存在很多缺点，如精度低，测量时间长，不安全等。本课题所研究的红外测温系统能实现人体温度的近距离或远距离准确测量。该设计以STC89C52单片机为核心部件。利用非接触式温度传感器OTP-538U对温度进行采样。得到的电信号经过四运算放大器芯片LM324前置放大后送至A/D模块，A/D采用12位高精度的TLC2543芯片，数字信号传送到主控芯片STC89C52，并由微处理器完成数据采集和转换，实现温度的实时测量并实时显示在LCD1602模块上。本文所研究的非接触传感器单片机测温系统由于对被测物体的红外辐射进行的是非接触无损测量，测量过程中不会扰乱被测部分的温度场，响应快，温度分辨率高，稳定性好和使用寿命长等一系列的优点，比传统的接触式测温有更多的场合适应性。关键词：STC89C52；非接触传感器；LM324；红外辐射ABSTRACTSofar,ourcountry’stemperaturemeasuringinstrumentisstillamercurythermometermainly.Thiskindofmeasuringinstrumenthasmanyshortcoming,suchaslowaccuracy.measuringtimelong,unrestcongfigruent.Thesubjectoftheinfraredtemperaturesystemcanrealizethebodytemperatureclosedistanceordistancemeasuredaccurately.ThedesignfortheSTC89C52single-chipmicrocomputerasthecorecomponent.Usecontact-lesstemperaturepreachOTP-538Utemperatureinsampling.OperationalamplifierchipLM324willsentelectricalsignalstotheA/Dmoduleafterpre-amplification,A/Dand12ofthehighaccuracyofTLC2543chip,digitalsignalstocontrolSTC89C52core,andthemicroprocessorcompletedatacollectionandconversion,realizereal-timetemperaturemeasurementandreal–timedisplaytoLCD1602module.Thispaperstudiesthecontactsignal-chipmicrocomputertemperaturemeasurementsystembecauseoftheobjecttobetestedforinfraredradiationisthecontactnondestructivemeasurement,themeasurementprocesswon’tdisruptthemeasuredpartofthetemperaturefield,fastresponse,temperaturehighresolution,goodstabilityandlongservicelifeandaseriesofasvantages,thantraditionalcontacttemperaturemeasurementhavemoresituationsadaptability.KEYWORDS:STC89C52；Noncontactsensor；LM324；Infraredradiation目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc359444623"第1章绪论PAGEREF_Toc359444623\h1HYPERLINK\l"_Toc359444624"研究课题背景PAGEREF_Toc359444624\h1HYPERLINK\l"_Toc359444625"第2章红外测温仪概述PAGEREF_Toc359444625\h2HYPERLINK\l"_Toc359444626"2.1红外测温仪简介PAGEREF_Toc359444626\h2HYPERLINK\l"_Toc359444627"2.2红外线测温仪的优点PAGEREF_Toc359444627\h2HYPER