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1、AbstractAbstractPlatinumresistancethermometeristhemostconvenienttemperaturemeasuringinstrumentinindustrialapplication.Becauseoftheaccuracyinprecisetemperaturemeasurement,ithasbeentreatedasthedefinitionofinternationaltemperaturescale.Withthecontinuousdevelopmentandimprovementoftechnolog
2、yandmanufacturingtechnique,therequirementofthethermodetectorisgettinghigherandhigher.Nowadays,Platinumresistancethermometerobtainsahigheraccuracyandthestabilityisalsobetter.Thereareanumberofdetectinginstrumentsthataimattemperaturemeasuringinthemarketnow,what’smore,theirproductionlevels
3、areimprovingcontinuouslyonbothoftheworkmanshipandtheaccuracyofmeasurement.However,it’sveryexpensivetogetthetemperatureofhighprecisiondetector.Thepurposeofthisdesignistoproduceahighprecisiontemperaturemeasurementsystemwhichpossessesahighperformanceaswellasalowcostbyapplyingtheregulartem
4、peraturesensor,theelectronicandcomputertechnologythataregettingmoreandmoremature.Thisprojectdesignedandrealizedthehighprecisionplatinumresistancethermometerto
satisfythecontinuousimprovedrequirementsofthermometryonindustry.Thepaperfirst
outlinedtheresearchbackgroundandsignificanceofthe
5、highprecisionplatinumresistance
temperaturemeasurementinstrument,andalsotheresearchstatusandthemainfunction.
Basedonthesedescriptions,thepaperraisedtheoveralldesignschemeofthehighprecision
platinumresistancetemperaturemeasurementinstrumentaswellastherelevantparameter
andtheprincipleand
6、methodofmeasurement.Inthesecondplace,thepaperalsocompleted
thedesignofhardwarecircuitbyusingtheC8051F340asaVisualProcessingUnitandsome
deviceslikereal-timeclock,storage,liquidcrystal,button,powersupply,serialinterface,etc.
Moreover,combinedwiththehardwareplatform,thispaperputforwardthe
7、overalldesignof
thesoftwaresystemandprovidedprogramdesignprocessofeachmodulealsosome
implementationcodes.Atlast,thispapertookasystemdebuggingforthethermodetector
whichreachedtheexpectedtargetandprovedacertainpracticalvalue.Keywordsplatinumresistor(Pt100)four-wirecarriersystemhighprec