基于STM32的数据采集系统英文文献

DesignoftheDataAcquisitionSystemBasedonSTM32ABSTRACTEarlydetectionoffailuresinmachineryequipmentsisoneofthemostimportantconcernstoindustry.Inordertomonitoreffectiveofrotatingmachinery,wedevelopmentamicro-controlleruC/OS-IIsystemofsignalacquisitionsystembasedonSTM32inthispaper.wehavegiventhewholedesignschemeofsystemandthemulti-channelvibrationsignalinaxisX,YandZoftherotaryshaftcanbeacquiredrapidlyanddisplayinreal-time.Oursystemhasthecharacterofsimplestructure,lowpowerconsumption,miniaturization.Keywords:STM32;dataacquisition;embeddedsystem;uC/OS-II;1.1.IntroductionThereal-timeacquisitionofvibrationinrotatingmachinerycaneffectivelypredict,assessanddiagnoseequipmentoperationstate,theindustrygetsvibrationdataacquisitionRapidlyandanalysisinreal-timecanmonitortherotatingmachinerystateandguaranteethesaferunningoftheequipment.Inordertopreventfailure,reducemaintenancetime,improvetheeconomicefficiency,Thepurposeoffaultdiagnosissystemcandetectthesedevicesthroughthevibrationsignalacquisitionofrotatingmachinery,andprocessthedataacquisition,thenitwillmaketimelyjudgmentofrunningstateofequipment.Whilethedataacquisitionmoduleisthecorepartofthefaultdiagnosissystem[1-4].Thepracticalapplicationintheindustrialfield,istheequipmentoperatingparameterswillbeacquiredtomonitorequipmentoperatingstate.Intraditionaldataacquisitionsystems,thedatafromacquisitioncardaregenerallysendintothecomputer,andspecificsoftwarewillbedevelopedforthedataacquisition.ThemaincontributionofthispaperhasdesignedtheSTM32platformwithARMtechnology,thathasbecomeatraditionalmainstreamtechnologyinembeddedsystems,andthecollectingdatatowardthedirectionofhighreal-time,multi-parameter,high-precision,whiledatastoragebecomelargecapacity,moreminiaturizationandportable,andthedevelopmentofmulticommunicationmodeandlong-distancefordatatransmission.Soastomeettheactualacquisitionsystemmultitaskingrequirements,thisarticlehasdesignedbasedonSTM32micro-controlleruC/OS-IIsystemofsignalacquisitionsystem.Therefore,inordertomeettheactualacquisitionsystemmultitaskrequirements,thisnoveltyofthisarticlehasdesignedasignalacquisitionsysteminmicro-controlleruC/OS-IIbasedonSTM32.2.ArchitectureofdataacquisitionsystemDataacquisitionaskeytechnologyformonitoringequipment,recentlyalotofworkhasbeendoneonit.AnembeddedparalleldataacquisitionsystembasedonFPGAisOptimizeddesignedwhichwillmakeitreasonabletodivideandallocatehigh-speedandlow-speedA/D[5].Instead,ithasuseahigh-speedA/DconverterandStratixIIseriesofFPGAfordatacollectionandprocessing,inwhichthemaincontributionisusedoftheCompactPeripheralComponentInterconnect,thesystemhasthecharactersofmodularization,sturdinessandscalability[6].ButremotecontrolwillbeneededinSpecialConditions,thispaperintroducetheembeddedoperatingsystemplatformbasedonWindowsCEanduC/OS-IItodesignaremoteacquisitionandcontrolsystemwiththeGPRSwirelesstechnology[7-8].Inordertoachievethedatasharingofmulti-user,ithasbuildtheembeddeddynamicwebsitefordataacquisitionmanagementanddisseminationwiththeARM9andLinuxoperationsystem[9].AdatacollectionterminaldevicesisdesignedbasedonARM7microprocessorLPC2290andembeddedreal-timeoperatingsystemuC/OS-IItosolvethereal-timeacquisitionofmultichannelsmallsignalandmulti-channeltransmission[10].Ontheotherhands,twoparallelDSP-basedsystemdedicatedtothedataacquisitiononrotatingmachines,andtheinnersignalconditionerisusedtoadaptthesensoroutputtotheinputrangeoftheacquisition,andthensignalpost-processingbythedesignsoftware,whilethemostfrequentlystructureistouseDASandFPGA-based,andsuchprogramsarealsodependentontheDAScost.Inordertomeetmarketrequirementsoflowpowerconsumption,lowcost,andmobility,Fig.1inthispaperpresentsthedesignoverallstructurediagramofdataacquisitionsystem.ThroughSPIinterface,thesystemgetsthedatacollectionwiththreeaxisaccelerationsensorintotheSTM32controllerofinnerA/Dconversionmodulewith12-bit,thisprocessisnon-interferingparallelacquisition.Oursystemuses240x400LCDandtouchscreenmodulereal-timetodisplaythecollecteddatainrealtime.2.1.STM32micro-controllerA32bitRISCSTM32F103VET6,usedastheprocessorinoursystem,comparedwithsimilarproducts,theSTM32F103VET6workat72MHZ,withcharactersofstrongperformanceandlowpowerconsumption,real-timeandlow-cost.Theprocessorincludes:512KFLASH,64KSRAM,anditwillcommunicatebyusingfiveserialportswhichcontainaCANbus,aUSB2.0SLAVEmodeandaEthernetinterface,whatsmoretwoRS232portsarealsoincluded.ThesysteminourpaperextendtheSST25VF016BserialmemorythroughtheSPIbusinterface,thatwillregardasthetemporarystoragewhencollectlargenumberofdata,furthermore,wehavetheA/Dconverterwith12bitsresolution,andthefastestconversionupto1us,with3.6Vfull-scaleofthesystem.Inadditiontodesignofthesystempowersupplycircuit,theresetcircuit,RTCcircuitandGPIOporttoassurancesystemneedsandnormaloperation.2.2.DataacquisitionThemachinestateisnormalornotismainlydependedonthevibrationsignal.Inthispaper,toacquirethevibrationdataofrotatingmachineryrotor,wehaveusedvibrationaccelerationtransducersMMA7455Lwhichcouldcollectthedatafromaxisx,y,andzofthecompanyofFree-scale.Thekindofv