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1、苏州大学本科生毕业设计（论文）ResearchandDevelopmentoftheRemoteI/ODataAcquisitionSystemBasedonEmbeddedARMPlatformINTRODUCTIONWiththewideuseofthenetworked,intelligentanddigitaldistributedcontrolsystem,thedataacquisitionsystembasedonthesingle-chipisnotonlylimitedinprocessingcapacity,bu
2、talsotheproblemofpoorreal-timeandreliability.Inrecentyears,withtherapiddevelopmentofthefieldofindustrialprocesscontrolandthefastpopularizationofembeddedARMprocessor,ithasbeenatrendthatARMprocessorcansubstitutethesingle-chiptorealizedataacquisitionandcontrol.EmbeddedARM
3、systemcanadapttothestrictrequirementsofthedataacquisitionsystem,suchasthefunction,reliability,cost,size,powerconsumption,andsoon.Inthispaper,anewkindofremoteI/OdataacquisitionsystembasedonARMembeddedplatformhasbeenresearchedanddeveloped,whichcanmeasureallkindsofelectri
4、calandthermalparameterssuchasvoltage,current,thermocouple,RTD,andsoon.ThemeasureddatacanbedisplayedonLCDofthesystem,andatthesametimecanbetransmittedthroughRS485orEthernetnetworktoremoteDASorDCSmonitoringsystembyusingModbus/RTUorModbus/TCPprotocol.Thesystemhasthedualred
5、undantnetworkandlong-distancecommunicationfunction,whichcanensurethedisturbrejectioncapabilityandreliabilityofthecommunicationnetwork.Thenewgenerationremotedataacquisitionandmoni-toringsystembasedonthehigh-performanceembeddedARMmicroprocessorhasimportantapplicationsign
6、ificanceSTRUCTRUEDESIGNOFTHEWHOLESYSTEMThewholestructurechartoftheremotedataacquisitionandmonitoringsystembasedonembeddedARMplatformisshowninFigure1.Intheschemeofthesystem,theremoteI/OdataacquisitionmodulesaredevelopedbyembeddedARMprocessor,whichcanbewidelyusedtodivers
7、ifiedindustriessuchaselectricpower,petroleum,chemical,metallurgy,steel,transportationandsoon.Thissystemismainlyusedfortheconcentrativeacquisitionanddigitalconversionofa15苏州大学本科生毕业设计（论文）varietyofelectricalandthermalsignalssuchasvoltage,current,thermalresistance,thermo-c
8、oupleintheproductionprocess.ThentheconverteddatacanbedisplayedontheLCDdirectly,andalsocanbesenttotheembeddedcontrolle
