熱釋電系數(shù)計(jì)算機(jī)測試系統(tǒng)的研究.pdf

1、華中科技大學(xué)碩士學(xué)位論文熱釋電系數(shù)計(jì)算機(jī)測試系統(tǒng)的研究姓名：肖臘連申請學(xué)位級別：碩士專業(yè)：微電子學(xué)與固體電子學(xué)指導(dǎo)教師：呂文中曾亦可20060331，華中科技大學(xué)碩士學(xué)位論文ABSTRACTThethesisfocusedondevelopingacomputeraidedsystemformeasuringthepyroelcetriecoefficientThemagnitudeofpyroelectficcoefficientdi

2、rectlyaffectsthepropertiesofpyroelectricmaterialsSoempoldefingthecomputeraidedsystemformeasureingpyroelectriccoefficientisquiteimportantItbenefitsthebasicmadapplicationresearchofpyroelectricmaterialsUptoIIOW，therearevari

3、ousmeasuringmethodsofthepyroelectriccoefficient，suchasthestaticmethod，thedirectmethod(includesthepyrodectriccurrentmethodandtheconstantheatingratemethod)，thechargeintegrationmcthodanddigitalintegrationmethodandsoonInthis

4、system，themeasurementofthepyroelectriccoefficientisfoundedOilthep3ToelectricenrrelltmethodIthasalotofadvantagesThismethodcannotonlymeettheconditionofthezeroelectricfieldbutalsomeasurethepyroelectficcurrentinthecontinuous

5、temperaturerange，anddetectthechangeofthepyroelectriccoefficientcorrectlyThewholesystemconsistsoftwoparts：hardwareandsoftwareThefunctionofthehardwareistomeasurethepyroe]ectriccurrentandthesampletemperatureThispartconsists

6、ofthreemodules：measuringpyroelectriccuEent，measuringsampletemperatureandcontrollingheatertenlperatareThemoduledesignofmeasuringpyroelectriccurretffisforemostfortheMtolesystemForthepropertiesofthehighimpedance，lowflequenc

7、yandsmallsignalsource，aspecialamplificationcircuitofplcoamperecurrentisdesignedThedesignofheaterisimportanttooBasedonthetheoryofthepyroelectriccurrentmethod，thesampletemperaturevarietymustbesymmetricalHeaterisdesignedwit

8、hampullaceousheathThesystemsoftwaremainlyconsistsofcommunication，dataprocessingandinterfacethepyroelectriccurrentandthesampletemperaturecanbecollectedthroughRS232serialportthenpyroelectriccoefficientversustemperaturecanb