目录摘要...............................................................IABSTRACT.................................................................................................................II第一章绪论.......................................................11.1课题研究的目的和意义.......................................11.2红外测温技术的发展概况.....................................1第二章红外测温仪的测温原理........................................42.1红外测温的基础理论.........................................42.2红外测温传感器的测温特点...................................72.3本章小结................................................8第三章总体方案设计和选择.........................................93.1设计方案分析..............................................................................................93.2方案的选择................................................103.3总体方案设计..............................................133.4本章小结..................................................13第四章系统硬件设计..............................................144.1单片机处理模块............................................144.2红外测温模块..............................................184.3电源模块..................................................204.4报警模块..................................................214.5LCD显示模块.............................................22第五章系统软件设计...............................................255.1主程序模块设计............................................255.2红外测温程序模块..........................................275.3LCD显示程序模块.........................................28第六章系统调试与分析............................................306.1红外测温系统调试和分析....................................306.2本章小结..................................................33第七章总结与展望................................................34致谢..............................................................36参考文献..........................................................37附录一:设计总体电路图............................................38附录二:实物连接图................................................39附录三:PCB图...................................................40附录四:元器件清单................................................41附录五:程序编写..................................................42I摘要在医学中,体温是一个人重要的生理参数,是人体生命活动的基本特征,也是观测人体机能是否正常运行的重要指标之一。所以,体温计是日常生活中和医学上必不可缺的测温器具。随着科技的进步,社会的发展,经过人们不懈的努力研究,终于研制出了一种新型的测温技术——红外测温。这是一项新型的测温技术,它是根据人体发出的特定波段的红外线来测量人体温度的。我们知道,传统的水银式体温计时根据液体的热胀冷缩性质来测量人体温度的。虽然价格便宜,但是准确度低、测量时间长、容易破碎和污染环境。然而,红外测温仪正好解决了水银体温计的弊端,它不仅测量准确、速度快,而且还能实现大规模的人体测量。所以,红外测温仪也被应用于疾病疫情的检疫中,而且发挥了重要的作用。本文介绍了红外测温仪测温的基本原理和实现方法,提出了以STC89C51单片机为其核心控制部件的红外测温系统。详细介绍了该系统的构成和实现方式,给出了硬件设计原理图和软件的设计流程图。该系统主要由光学系统、光电探测器、显示输出等部分组成。光学系统汇集其视场内目标的红外辐射能量,红外能量聚焦在光电探测仪上并转变为相应的电信号。STC89C51单片机负责控制启动温度测量、接收测量数据、并按照单片机中的温度值计算算法计算出目标的温度值,最后通过LED显示屏把结果数值显示出来。关键词:STC89C51单片机;红外测温;LCD显示IIABSTRACTInmedicine,thebodytemperaturesisoneofimportantphysiologicalparameters,arethebasiccharacteristicsofhumanbodylifeactivity,isalsoobservedthebodyfunctionisoneofimportantindexesofnormaloperation.So,thethermometerisessentialondailylifeandmedicaltemperaturemeasuringinstruments.Withtheprogressofscienceandtechnology,thedevelopmentofthesociety,throughtheunremittingefforts,finallydevelopedanewkindoftemperaturemeasurementtechnology,infraredtemperaturemeasurement.Thisisanewkindoftemperaturemeasurementtechnology;itisaccordingtothehumanbodyfromthespecificbandofinfraredtomeasurethebodytemperature.Whenweknowthatthetraditionalmercurythermometersaccordingtotheheatbilgescoldshrinknatureoftheliquidtomeasurementtime,easilybroken,andpollutetheenvironment.Infraredthermometer,however,isjusttosolvethedisadvantagesofthemercurythermometer,itisnotonlyaccurateandfastmeasurement,butalsocanrealizelarge-scalehumanbodymeasurement.So,infraredthermometerhasbeenappliedtoquarantinediseaseoutbreaks,andplayedanimportant.Infraredthermometertemperaturemeasurementwereintroducedinthispaperthebasicprincipleandimplementationmethod,putforwardtheSTC89C51micro-controllerasthecorecontrolcomponentsofinfraredtemperaturemeasurementsystem.Compositionandimplementationofthesystemwasintroducedindetail,givestheprinciplediagramofthehardwaredesignandsoftwaredesignflowchat.Thesystemismainlycomposedofopticalsystem,photoelectricdetector,theoutputdisplayparts.Opticalsystem,theinfraredradiationenergyofthefieldgoal,infraredenergyfocusingonthephotoelectricdetectorsandtranslatedintoIIIcorrespondingelectricalsignals.STC89C51micro-controllercontroltostartthetemperaturemeasurement,receivingmeasurementdate,andaccordingtothesinglechipmicrocomputertemperaturecalculationalgorithmofthetargettemperature,finally,LEDdisplaytheresultsofnumericaldisplay.KEYWORDS:TheSTC89C51MCU,infraredradiationthermometry,theLCDdisplay1第一章绪论1.1课题研究的目的和意义随着科技的快速发展和医疗技术的需要,测温技术也在不断地提高和改进。众所周知,体温是一个重要的人体生理参数,不仅是人体生命活动的基本特征,而且也是观测人体机能是否正常运行的重要指标之一。如果能及时知道一个人的体温,也许就能知道这个人的生理参数是否正常运行。所以,体温计无论是日常生活还是临床医疗,都是必不可少的测量器具。传统的体温计主要是水银式体温计,通过储存在水银球内的水银受热膨胀,然后读取刻度值来判断温度的高低。但是这种温度计测量时间长、准确度低,在遇热或者放置不当时,容易破裂使水银泄露,造成人体接触中毒、污染环境。面对这种传统体温计的不利因素,不仅给人们传达错误的信息,而且还有害健康。因此,需要研究出一种新型的测温技术,改变传统体温计的测温方法,不仅能够方便、快捷、准确的测出人体的温度,而且对人体和环境没有伤害。利用高科技和不懈的努力,人们终于研究设计出一种新型的测温仪——红外线测温