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1、杭州电子科技大学硕士学位论文ABSTRACTThispaperfirstexplainsthemotorstrongmarketdemandandtraditionalmotorprotectiondefectsofelectricelements,whichleadstotheimportanceofstudyofCPS.Andthenintroducesthedevelopmentofthecontrolandprotectiveswitchingdevicesathomeandabroad.Itispointedoutthataltho
2、ughnowCPSseriesproductsdespiteithasthefieldbustechnology,butmanufacturersarenotequippedwithacheapPC,whichmakesthefieldbushasnotbeenverygoodtouse.ThenthepapergivestheoveralldesignschemeofCPSmonitoringsystem:1、ThePIC24HJ64GP506ischosenasthecontrolchip,accordingtothedesignrequ
3、irementsdesignsthesignalcollectioncircuit,signalconditioningcircuit,switchingpowersupplymodule,phasesequencedetectioncircuit,digitaltubedrivingcircuit,memorymodule,RS-485moduledesign.Andthisdesigncompletesthesoftwaredesignaccordingtothedesignrequirements,forexample,phaseseq
4、uencedetectionprocedure,procedureofsignalsampling,digitaltubedriverchips,24C64driverandtheModbus-RTUprotocolimplementationetc..2、DesignedacheapPCmonitoringdevicebasedonPIC24HJ64GP506,themainfunctionsofthedeviceiscapableofplacingCPSdrawerwithoutopeningthecase,throughthedrawe
5、rembeddeddisplayinterfacecontrolandviewallCPSworkmodeandstate.Monitoringequipmentselectionisa5.7inchLCD320240LCDscreen,andcompletedthedriveraccordingtotheinformation.3、MFCdesignedaPCmonitorsoftwarebasedon.Switchelectriccontrolandprotectionsystemdesignedinthethesis,including
6、a128nodewiththecontrolandprotectiveswitchingequipmentremotemonitorandcontrolandprotectiveswitchingdevices.Controlandprotectiveswitchingdevicecanreal-timemonitorthecircuitofcurrent,voltageandresidualcurrent,andhasthewillafterdataacquisitionprocessingparametersandsetbytheuser
7、tocompareandmakecorrespondingactionofprotectionfunction.MonitoringequipmentandcontrolandprotectiveswitchingcommunicatethroughRS-485communicationbus.Themonitoringdevicecanqueryeachnodeonthecontrolandprotectionswitchfaultrecordingandreal-timesamplingdata,andcanberemotelyopera
8、tedcontrolandprotectionswitchtoswitchonandoff.Finally,thispapersummarizestheresult
