便攜式多功能互感器測量儀的設(shè)計實現(xiàn).pdf

1、華中科技大學(xué)碩士學(xué)位論文便攜式多功能互感器測量儀的設(shè)計實現(xiàn)姓名：胡建勛申請學(xué)位級別：碩士專業(yè)：電工理論與新技術(shù)指導(dǎo)教師：李開成20060508IIAbstractTheelectricaltransfmerusedfmeasurementprotectionisanimptantinstrumentintheelectricalsystemitsschedulercalibrationcannotbeneglected.SotheRes

2、earchofptabletransfmercalibratwhichusedffieldcalibrationisusefulevensignificant.ThispapermainlydealswiththeresearchofakindofptableonlinecalibratofCTPTbasedonMSP430whichisakindofultralowpowermixedsignalmicrocontroller.Thi

3、scalibratisacterizedbyhighaccuracylowpowerconsumptionmultifunction.Thewholepaperwasdividedintohardwaresectionsoftwaresectiontoexpoundthedesignprincipleimplementationindetail.Inthehardwaresectionthepaperintroducesthewhole

4、hardwaresystembrieflyatfirstwhichincludesMSP430F149microcontrollerLCDmodulerealtimeclockmoduleEEPROMkeyspowermanagementmoduleserialcommunicationmodulesignalregulationmodule.Functionsofthesignalregulationmodulewereintrodu

5、cedfunctionofautorangeadjustwasanalysisspecifically.ThegoodperfmancesoftheMSP430wouldbeintroducedspecificallylatertheprocessofdataacquisitioncalculationmessagesaveresultdisplaywhichwasachievedbytheMSP430someotherrelevant

6、circuitswouldbeanalysis.Anewpowermanagementmoduleofthebatterywasdiscussedatlastge&disgecircuitbatterygasgaugecircuittheDCDCtransfmcircuitinthemodulewasintroduced.Fromthechoicetothedesignofthepowermanagementtheultralowpow

7、erconsumptionofthedevicewasemphasizedinthissection.InthesoftwarefractionthispaperdiscussedanewmethodoftheprogrammingwhichcouldtracethesignalfrequencychangebytheinterruptfunctionoftheMCU.thedesignofmultifunctionalmatrixke

8、yswasintroducedasthehardwareresourcewassavedthemanagementefficiencyrosebythisdesign.Thecalculationmethodofthedigitalsignalwasdeducedlater.ThenthepaperprovidedanewmethodoftheinterfacedesignwhichtheIOpinswereusedtocoupleth

9、einterfacebussequence.Someexperimentresultwereshowedatlastfmtheresulttheconclusioncouldbemadethatthemeasurementaccuracylevelreaches0.5%thenerrsourceswereanalysisbasedontheresults.Finallyindertogetridofthedisadvantagesoff