钽酸锂热释电探测器实现的辐射测温系统分析

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1、河南师范大学硕士学位论文钽酸锂热释电探测器实现的辐射测温系统分析姓名：韩欣申请学位级别：硕士专业：光学指导教师：刘玉芳20080501ABSTRACTRadiationthermometryusedtoinfersurfacetemperaturefromtheintensityofthermalradiationonthesurface．Itcarlcarryoutnoncontactmeasurementinvolvingobjectsthatmoverapidly,orsurfacescharacterizedby

2、allextraordinarilyhi曲temperatureandothertmachievablebytraditionalinstrumentssituations．Theprinciple，significanceandmethodsofradiationthermometryarestudieddetailed．ThemainworkconcernedjSasfollows：Thisthesispresentsthetheoryoftheradiationtemperaturemeasurementindet

3、ail，includingtheradiometryandtheblackbodyradiancelaw．Basedonthetheory,variousradiationthermometrieshavebeenintroduced，suchasthetotalradiationpyrometer，brightnesspyrometer,two-wavelengthpyrometerandmulti-wavelengthpyrometer．BasedontheKirchhofflaw,apracticaltempera

4、turereal—timemeasurementsystemusinglaserdiodelnGaAs／IandLiTaOspyroelectricdetectorispresented．Theinstrumentconsistsofthreeparts：opticalreceivingsystem，signalamplifyingandcontrollingsystem，anddisplaysystem．Theprincipleandstructureoftheinstrumentaleintroduced．Bandw

5、idthofamplifierandrelativeapertureofopticalsystemareoptimizedbasedontherequirementoftemperatureresolution．Bymeansofanalyzingtheeffectontemperaturemeasurementaccuracybyreflectionradiation,thesizeofwater-cooledshelterplateisdetermined．Theeffectontemperaturemeasurem

6、entaccuracyandthelimittoV(T)-TcurvebyresolutionpowerofA／Dconverteralestudied，optimalA／Dconverterisselected．Accordingtotherelationshipsbetweenvarioustechnicalparametersandmainspecifications(temperatureresolvingpowerofsingledetector,linearityofR(D坷curves,temperatur

7、emeasurementsensitivityandrelativetemperaturesensitivity)．anoptimalworkingwavelengthisproposed．BasedontheKirchhoff'sLaw,apracticaldual-wavelengthfiber-opticcolorimeter,withtheoptimalworkwavelengthcenteredat2．1∥mand2．3声mispresented．Undervariouscircumstances(i．e．te

8、mperature，surfacecondition,andwavelength)andfordifferentmaterials，theeffectoftheemissivityontheprecisionofthetemperaturemeasurementhasbeenexplored．Inaddition,b