基于ARM的GPRSDTU的研发

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1、山东大学硕士学位论文基于ARM的GPRSDTU的研发姓名：刘庆敏申请学位级别：硕士专业：信号与信息处理指导教师：田岚20090427山东大学硕士学位论文ABSTRACTNowadays，embeddedsystemsareoneofthemostpopularresearchfieldsandwillbethemostpromisingdirectionofthePost-PCEra．It’SwidelyusedinInformationAppliances(IA)，hand-heldcommunicationsequipment，instrumentation，a

2、utomotive，aerospace，industrialcontrol，dataacquisitionandSOon．Ithasbroughtgreatconvenienceforpeopletoworkandlive．GPRSDTUisanimportantapplicationofembeddedsystemsinthefieldsofindustrialcontrolanddataacquisition．ItsfunctionistotransmissserialdatathroughGPRSnetworkandtoprovideawirelessback

3、uplink．Thereforeitimprovesthereliabilityofdatatransmission．Withthegrowingdemandforintelligence，theconceptofintelligentGPRSDTUisputforward．Inadditiontotheoriginalbasicfunctions，moreintelligentmodulesneedtobeprovided，suchasmaintainingapermanenton-linebyautomaticheartbeat，remoteaccess，web

4、remotemanagement，automaticupdatesandSOon．ItcouldsavethecostofmaintenanceandiSmorecost-effectiveandthereforetheresearchonintelligentGPRSDTUhasbroadsenseandgoodbusinessprospects．ThispaperisaimedtodesignandimplementGPRSDTUintelligentapplicationplatformandtodeeplyanalyzethekeytechnologyoni

5、ntelligentfunctions．Firstofall，thebasicconceptanddesignprocessofembeddedsystemsareintroducedbasedonthetheoreticallevel，andsomemethodsaresummedup，suchasseizingtheessence，hierarchicalintegration，coordinationdivision，sceneanalysisandSOon；second，introduceGPRSDTUhardwareplatform，whichadopts

6、ATMEL'sAT91RM9200ascorecontr01unitandTelit’SGM862asGPRSmoduleinordertoachieveindustrial—levelrequirement；third，sumupthemethodtoconvertLinuxELFformatfiletoabinaryfile，andthenfocusoncorrectingU-boot’SunreasonableapplicationonAT91RM9200’SremapmechanismandrealizingtheindependenceofU-boot’S

7、bootmode；fourth，anembeddedhybridfilesystem(Cramfs+JFFS2+Initramfs)for2山东大学硕士学位论文intelligentGPRSDTUdesignschemeisproposed．whichisakeymoduleofintelligentGPRSDTU．Meanwhile，portandcustomizeLinux-2．6．20kernelbasedontheneedsofEFSandapplications；finally,illustratethebasictheorialmodelofappl