基于ARM的机载数据采集系统的设计与研究

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1、西北上业丈学硕士学位论文AbstractThisthesispresentsthedesignandimplementationofallAir-BorneDataAcquisitionandRecorddevicebasedonRISCchipAT91RM9200withARM9207rcoreandembeddedoperatingsystemLinux．ForthesakeofAir-Bornefacility,highreliabilityisdemandedstrictly，Forimprov

2、ingreliability,compactnessmustberequired，SOchoosingaprocessorwithmulti—interfacetoreduceperipheralcircuitcouldachievehighreliability．ApplyingembeddeddesignonthisApplicationsystemisinevitable．TheAir—BorneDataAcquisitionandRecorddeviceresearchediflthis也esi

3、siSanembeddedsystembasedOn32．bitARMmicroprocessorAT91RM9200producedbyAtrnel．ThisdevicecouldCapturemanykindsofparameterswhenaircraftisinflightinreal-time，itprovidesbasaldataandinformationforflight—test．Startfromdiscussingthemainfunctionandtechniquedemand，

4、wecomewithoursolutionbasedonARM—Linuxplatform，giveabriefintroductionofARMmicroprocessor,ARM920TcoreandAT91RM9200．Wetakethethoughtof‘‘Coreboard-motherboard”，buildthehardwaresystemwhichistakingAT91RM9200asthecore，thecoreboardincludessomebasiccircuitwhichis

5、necessarilyusedinanARMsystem．Themotherboardentendsmanyuserinterfaces，suchasEnternetport．USB，UART，LEDandSOon．WeanalyzethemoduleofDataAcquisitionbasedonthemicroprocessorC8051F020indetailandintroducethemethodofstickingaccuratetimelabelbyGPS．Andthenweresearc

6、hthetransplantoftheLinuxOS，Ubootwillbecompliedandloaded，thekernelwillbeconfigured，cut，andthencomplied，thefilesystemwillbebuill．U—bootisnecessarybecauseitwillloadkernelandfilesystemtothetargetboard．AfterthaLwedisusstheflowchartofmainsoftwareinthissystem．A

7、tlast，aSUlTl—upofthisembeddedsystemisgiven．Ithasprovedthatthissystemhasthefollowingperformancesuchashighstability,highreliability,lowconsumptionandlowcost．ThissystemhassatisfiedallrequirementsofanAir-Bornetestequipment，andhasrealizedtheanticipatedpurpose

8、．Keywords：Embeddedsystem，AT91RM9200，Linux，C8051F020，GPSIl畦1￡工业太学硕士学位论文第一章缝论"11'111第一章绪论嵌入式系统是继IT网络技术之后，又一个新的技术发展方向。由于嵌入式系统具有体积小、性能强、功耗低、可靠性商以及面向行业应用的突出特征，日前已经广泛地应用于军事国防、消费电子、网络通信、工业控制等各个领域，并成为近年来新兴的研究热点。ARM即AdvancedRISCMac