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外文翻译--基于嵌入式实时操作系统的工程机械智能显示仪的研究 英文版【优秀】.pdf

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外文翻译--基于嵌入式实时操作系统的工程机械智能显示仪的研究 英文版【优秀】.pdf

THEEIGHTHINTERNATIONALCONFERENCEONELECTRONICMEASUREMENTANDINSTRUMENTSICEMI’2007RESEARCHONTHEINTELLIGENTDISPLAYINSTRUMENTFORCONSTRUCTIONMACHINERYBASEDONEMBEDDEDRTOSXUCHUANPEILIZHIHUCONGWANGWEIDEPTOFELECTRONICENGINEERINGGUILINUNIVERSITYOFELECTRONICTECHNOLOGY,GUILIN,541004CHINAABSTRACTTAKINGTHEINTELLIGENTWHEELLOADERASANINSTANCE,THISPAPERRESEARCHESONTHEINTELLIGENTDISPLAYINSTRUMENTFORCONSTRUCTIONMACHINERYBASEDONEMBEDDEDRTOSASTRUCTUREOFEMBEDDEDSYSTEMBASEDONRTOSISPROPOSED,ANDDESIGNSOFBOTHTHEHARDWAREANDSOFTWAREARECOMPLETEDTHESYSTEMTAKESTHETMS320LF2407ACHIPOFTHETIASTHEHARDWAREPLATFORM,ANDTHEREALTIMEOPERATESYSTEMOFC/OSASTHESOFTWAREPLATFORM;COMPLETESREALTIMEMONITORINGANDMANAGEMENTOFTHECONSTRUCTIONMACHINERYBYTHECANBUSCOMMUNICATINGWITHTHEMAINCONTROLLERKEYWORDSEMBEDDEDSYSTEM;C/OS;TMS320LF2407A;CANBUS;DISPLAYINSTRUMENT1INTRODUCTIONTHECONSTRUCTIONMACHINERYDISPLAYINSTRUMENTISTHEIMPORTANTINTERFACEBETWEENTHEDRIVERANDTHECONSTRUCTIONMACHINERYTOCOMMUNICATEINFORMATION,WHICHPLAYSAVITALROLETOTHECONSTRUCTIONMACHINERYSECURITYANDTHEECONOMYINRECENTYEARS,ALONGWITHTHECONSTRUCTIONMACHINERYELECTRONICTECHNOLOGYDEVELOPMENT,THEINFORMATIONWHICHDISPLAYEDONTHECONSTRUCTIONMACHINERYINSTRUMENTISUNCEASINGLYINCREASINGTHETRADITIONALMECHANICALINDICATORFORCONSTRUCTIONMACHINERYCOMBINATIONINSTRUMENTISMOREANDMOREUNABLETOMEETTHEACTUALNEEDSPARTICULARLY,WITHTHECOMPUTER,THEMICROELECTRONANDDIFFERENTKINDSOFFIELDBUSCOMMUNICATIONBECOMEWIDESPREADAPPLICATIONS,TAKINGTHEEMBEDDEDMICROPROCESSORASTHECOREINTELLIGENTDIGITALDISPLAYINSTRUMENTWOULDBEANINEVITABLETRENDFORTHECONSTRUCTIONMACHINERYINSTRUMENTDEVELOPMENTTHISPAPERCOMBINESTHEREALTIMEEMBEDDEDTECHNOLOGY,THECANBUSTECHNOLOGY,THETOUCHSCREENTECHNOLOGYANDTHEGPSPOSITIONTECHNOLOGYTOGETHERTOAPPLYTOTHECONSTRUCTIONMACHINERYLCDMONITOR,WITHTHEWHEELEDLOADERASTHERESEARCHOBJECT,ANDRESEARCHESONTHEINTELLIGENTDISPLAYINSTRUMENTFORCONSTRUCTIONMACHINERY2SYSTEMARCHITECTURETHEARCHITECTUREOFTHEONBOARDINTELLIGENTDISPLAYINSTRUMENTSYSTEMISCOMPOSEDOFTHEPOWERSOURCEMODULE,THEDSPMODULE,THELCDMODULE,THEMECHANICALKEYBOARDMODULE,THETOUCHSCREENMODULE,THEGPSORIENTATIONMODULE,THEADSUPPLEMENTALLIGHTINGSAMPLEMODULE,THECANCOMMUNICATIONINTERFACEMODULEANDTHESOUNDALARMINGMODULESETC,WHICHARESHOWNASFIGURE1TMS320LF2407ACONTROLLERC/OSIIRTOSPOWERSOURCEMODULEADMODULESUPPLYLIGHTINGSAMPLEMECHANICALKEYBOARDMODULECANMODULEWHEELEDLOADERMAINCONTROLLERSCIMODULEGPSPOSITIONMODULELCDDISPLAYTOUCH33V5VLEVELISOLATETURNINGLAMPSAMPLEOPTOISOLATETURNINGCONTROLSOUNDALARMINGMODULESFIG1INTELLIGENTDISPLAYINSTRUMENTSYSTEMARCHITECTURETHEPOWERSOURCEMODULEDEALSWITHTHEVEHICLE24VPOWERSOURCEWITHTHEFILTERCONDITIONS;REMOVESTHEPOSSIBLENOISES,OUTPUTSFORTHEMAINCONTROLLERMODULEANDTHELCDTHEPOWERSOURCEIS48241424411351/07/25002007IEEEAUTHORIZEDLICENSEDUSELIMITEDTOJILINUNIVERSITYDOWNLOADEDONDECEMBER17,2008AT0608FROMIEEEXPLORERESTRICTIONSAPPLYTHEEIGHTHINTERNATIONALCONFERENCEONELECTRONICMEASUREMENTANDINSTRUMENTSICEMI’2007TRANSFORMEDTO33VAND5VCONSTANTVOLTAGESUPPLYPOWERFOROTHERMODULESINTHELCDTHEDSPMODULEINCLUDSTMS320LF2407ACHIP,EXTENDPROGRAMANDDATAMEMORY,RESETCHIPETC,WHICHISTHEHARDWAREPLATFORMOFTHISEMBEDDEDREALTIMEOPERATINGSYSTEMTHELCDDISPLAYMODULEISTHEHUMANMACHINEINTERFACEUSEDFORDISPLAYINGALLKINDSOFSTATUSINFORMATIONOFTHEWHEELEDLOADERWHICHISTRANSMITTEDTHROUGHTHECANBUSTHEMECHANICALKEYBOARDANDTHETOUCHSCREENARETHEINSTRUMENTSTOACHIEVETHEOPERATORCONTROLLINGANDMONITORINGWHEELEDLOADERWITHALLKINDOFSTATUSINTIMETHEGPSPOSITIONMODULETRANSMITSTHEWHEELEDLOADERGEOGRAPHICALPOSITIONINFORMATIONTOTHEDISPLAYINSTRUMENTABOUTTHEWHEELEDLOADERTHROUGHTHESCITHEDISPLAYINSTRUMENTTRANSMITSTHEINFORMATIONTOTHEMAINCONTROLLERFORPROCESSINGONTIMECONSEQUENTLY,THELONGDISTANCESUPERVISORCENTERCANREALTIMEQUERYTHEWHEELEDLOADER’SWORKINGPOSITIONBYTHEGPRSWIRELESSNETWORKWHENTHELIGHTENINGOFTHEWHEELEDLOADER’SWORKINGENVIRONMENTISINSUFFICIENT,THEADSUPPLEMENTALLIGHTINGSAMPLEMODULEAUTOMATICALLYOPENSASUPPLEMENTALLIGHTTOSTRENGTHENTHEBRIGHTNESS,WHICHISCONVENIENTFOROPERATORCONTROLLINGTHECANBUSMODULEISTHEKEYFORTHEDISPLAYINSTRUMENTANDTHEWHEELEDLOADERMAINCONTROLLERCOMMUNICATIONTHEDISPLAYINSTRUMENTCOULDGETALLKINDSOFOPERATIONALPARAMETERSANDTHEDATAOFTHEENTIREWHEELEDLOADERONLYTHROUGHTHECANCOMMUNICATION,ANDCOULDCONTROLTHEWHEELEDLOADERTOCARRYONTHECORRESPONDINGFUNCTIONALOPERATIONS,WHICHISAKEYPOSITIONTOCONNECTTHEDISPLAYINSTRUMENTANDTHEMAINCONTROLLERWHENTHEWHEELEDLOADERWORKSWITHSOMEFAULTS,THEDISPLAYINSTRUMENTCOULDPROMPTALARMSBYTHESPEECHALARMINGMODULE,WHICHCOULDINFORMTHEOPERATORIMMEDIATELYTOCARRYONPROCESSINGTOTHESEFAULTS,THUSMAYAVOIDGREATECONOMICLOSSTHEEMBEDDEDSYSTEMSOFTWAREACHIEVESTOINTELLIGENTLCDMONITORONTHEWHEELEDLOADERANDINTERACTDATAWITHTHEWHEELEDLOADERMAINCONTROLLERBASEDONTHISPLATFORMOFHARDWAREFUNCTIONMODULE3SYSTEMHARDWAREDESIGNTHEDISPLAYINSTRUMENTISRESPONSIBLEFORDISPLAYING,MONITORING,PROCESSINGANDCONTROLLINGOFALLKINDSOFPARAMETERSOFTHEWHEELEDLOADERMAINCONTROLLERWHICHARERECEIVEDFROMTHECANINTERFACEACCORDINGTOTHEFUNCTIONSOFTHEINTELLIGENTDISPLAY,ITCANBEDIVIDEDINTOFOLLOWINGMODULECIRCUITSTODESIGN1THEPROCESSOROFTMS320LF2407AMAINCIRCUITINCLUDESTHECANINTERFACE;2KEYSTROKEGATHERINGCIRCUIT;3TOUCHSCREENMODULE;4POWERSOURCEPROCESSINGMODULE;5GPSPOSITIONMODULE;6LIQUIDCRYSTALINTERFACECONTROLCIRCUIT;7SPEECHCHIPCONTROLCIRCUIT;8DISTINCTIONCHANGESCIRCUITETCTHESCHEMATICSYSTEMHARDWAREISSHOWNASFIGURE2TMS320LF2407AEXTENDPROGRAMANDDATAMEMORYADDBUSDATABUSWHEELEDLOADERMAINCONTROLLERCANLEVELISOLATION74LVTH245LCDTOUCHIOGPSSCIMECHANICALKEYSSUPPLEMENTALLIGHTINGTURNINGLAMPSAMPLEADCOPTOCOUPLERSCICANIOADC1IOPOWERFIG2SCHEMATICSYSTEMHARDWARECIRCUITACCORDINGTOTHESYSTEMHARDWAREPLATFORM,DIVIDETHERESOURCESONTHEPLANOFTHEMICROPROCESSORDSPLF2407A11CHANNELADINPUT,USESTHEONCHIPADCMODULEADC1;212MECHANICALKEYSTROKESAMPLING,ACHIEVESWITHIOPE0IOPE7ANDXINT1;32CHANNELSWITCHINPUTSLEFTRIGHTTURNSIGNALLAMP,USESTWOIOPORT;4COMMUNICATIONWITHGPSUSINGONCHIPSCIMODULE;5CANBUSINTERFACE,USINGONCHIPCANCONTROLLER;6CONTROLOFTHESPEECHCHIPWITHTHEIOPORT;4825AUTHORIZEDLICENSEDUSELIMITEDTOJILINUNIVERSITYDOWNLOADEDONDECEMBER17,2008AT0608FROMIEEEXPLORERESTRICTIONSAPPLYTHEEIGHTHINTERNATIONALCONFERENCEONELECTRONICMEASUREMENTANDINSTRUMENTSICEMI’20077THEDATAMEMORYANDTHEPROGRAMMEMORYEXTENDINTERFACED0D15,A0A15;8THEJTAGSIMULATIONINTERFACE,THECRYSTALOSCILLATORCLOCKINPUT,RESETSIGNAL,THEPOWERSOURCEPINETCBECAUSETHETMS320LF2407AWORKSON33VVOLTAGE,INORDERTOAVOIDLEVELTRANSFORMING,THESYSTEMUSESTWOPIECESOFCY7C1021CV33CHIPSWHICHMADEINCYPRESSCORPORATIONTOEXPANDSYSTEMEXTERNALMEMORYSPACECY7C1021CV33ISONEOFTHE64KBYTE,16BITSTATICRAM,33VPOWERSUPPLYINORDERTOADAPTTHEDSPOFTMS320LF2407A33VWORKINGVOLTAGEANDSATISFYTHELOWPOWERCONSUMPTIONFEATURES,SN65HVD232ISSELECTEDFORCANBUSTRANSCEIVEROFTICORPORATIONITISONEKINDOFCANBUSDEVICEWITH33V/5VMIXEDVOLTAGETHISTRANSCEIVERFEATURESASFLOWSTHESIGNALTRANSFERRATECANACHIEVE1MBPSSIGNALDISTANCEIS40M,ANDQUITELOWMAINTENANCECURRENTTHUSITUSESFORQUITEIDEALLYLOWPOWERCONSUMPTIONINTHEDESIGNUSINGTHISCANBUSTRANSCEIVERTOCOMMUNICATEBETWEENTHEDISPLAYINSTRUMENTANDTHEMAINCONTROLLEROFINTELLIGENTWHEELLOADERINTHEDESIGN,CONSIDERINGTHATITMUSTCONTROLANDPROCESSTHEHEADANDTAILRAINWIPER,THEHEADANDTAILLAMP,THEFRONTHEADLAMP,THESPRAYINGOFWATER,THESMALLLAMP,THEWORKPUMP,THEPARKING,THENAMELYSENTINFORMATION,THEALARMINFORMATION,THEMENUOPERATIONOFTHEWHEELLOADERETC,12MECHANICALKEYSTROKEAREDESIGNEDINTHISSYSTEMACTINGASMANMACHINEINTERACTIONMETHODFORTHEDISPLAYINSTRUMENTANDTHEWHEELLOADERMAINCONTROLAFTERTHEOVERALLEVALUATION,CM3202407SLYBOFSHENZHENBRILLIANTCRYSTALTECHNOLOGYCOLTDISSELECTEDFORTHELIQUIDCRYSTALMODULEITISASECTIONPROPERATTENTIONTOBOTHCHINESEANDENGLISHWRITINGANDTHECARTOGRAPHYPATTERNSPOTMATRIXLIQUIDCRYSTALDISPLAYMODULE,THEBLUECOLORBACKLIGHT,INCLUDEBUILDIN512KBYTETHEROMGLYPHCODE,CANDISPLAYCHINESECHARACTER,NUMERICCHARACTER,ENGLISHLETTER,JAPANESELETTER,EUROPEANLETTERETC,ANDINCLUDESBUILDINTWOPAGEDISPLAYMEMORYINTHECHARACTERPATTERN,ITCANRECEIVETHESTANDARDCHINESECHARACTERENCODINGTODISPLAYCHINESEDIRECTLY,BUTDOESNOTNEEDTOENTERTHECARTOGRAPHYPATTERNTODEPICTCHINESEITCANCUTMUCHMICROPROCESSORTIME,PROMOTELIQUIDCRYSTALDISPLAYCHINESEEFFICIENTLYITSUPPORTS4/8OF6800/8080MCUINTERFACE,INCLUDEBUILDIN88KEYBOARDSCANNINGKEYSCAN,SUPPORTSCREENROLLSUPHORIZONTALLYANDROLLSUPVERTICALLY,INSIDESITCONSTRUCTS512BYTESRAMTOBEPOSSIBLETOMAKETHECHARACTERCUSTOM,PROVIDETHECHINESEANDENGLISHCHARACTERALIGNANDINSIDE10BITADCSUPPORTTOUCHSCREENAPPLICATIONBECAUSEOFTHOSEADVANTAGES,SOWEUSEDTHERA8803WITHITSTOUCHSCREENFUNCTIONFORTHETOUCHSCREENFUNCTIONPROGRAMINTHEDESIGNSWHENTHEPROCESSOROFLF2407AWORKSIN40MHZ,ITCANRESULTINTIMINGCONFUSIONBECAUSETHERA8803WORKINGFREQUENCYCANNOTFOLLOWDSPWORKINGFREQUENCYBYFARCONSIDERINGTHEABOVEFACTOR,IOPBOFDSPISSELECTEDASTHEDATALINECONNECTTOLCDDATAPORTDB0DB7,USINGIOOFIOPFASTHELCDTIMINGCONTROLWIRETOOPERATETHELIQUIDCRYSTALALTHOUGHITSSPEEDISSLOW,ITCANGUARANTEETHESYSTEMWITHSTABILITY4SOFTWAREDESIGNOFTHESYSTEMTHETASKDIVISIONANDTHEPRIORITYASSIGNMENTAREBASEDONTHEFUNCTIONREQUIREMENTSTHEFUNCTIONSOFTHEDISPLAYINSTRUMENTREQUIREDAREGIVENASFOLLOWSITSHOULDGAINTHEREAL7TIMEDATA,FAULTINFORMATION,REMINDINGMESSAGES,SHORTMESSAGESBYCOMMUNICATINGWITHTHEMAINCONTROLLEROFTHEWHEELLOADER,ANDTHENDISPLAYONLCD;8SAMPLESKEYSTROKEOFMECHANICALKEYBOARD;CONTROLSTHEMAINCONTROLLERTOCARRYONTHECORRESPONDINGOPERATIONTHROUGHDIFFERENTKEYSTROKEINFORMATION9ONECHANNELADSAMPLESAMPLESONECHANNELANALOGVALUETHROUGHTHEDSPADCFUNCTION,THATISTOSAY,ITCARRIESONMAKINGUPLIGHTGATHERINGWHENINSIDECABLIGHTISINSUFFICIENT,THELIGHTLAMPISTURNEDONAUTOMATICALLY;TOUCHSCREENINFORMATIONGATHERINGTHETOUCHSCREENFUNCTION,INSTEADOFTHEMECHANICALKEYBOARD,CANFACILITATETHEDRIVERMUCHBETTERTO4826AUTHORIZEDLICENSEDUSELIMITEDTOJILINUNIVERSITYDOWNLOADEDONDECEMBER17,2008AT0608FROMIEEEXPLORERESTRICTIONSAPPLYTHEEIGHTHINTERNATIONALCONFERENCEONELECTRONICMEASUREMENTANDINSTRUMENTSICEMI’2007OPERATINGACCORDINGTOTHEWHEELLOADEROPERATOR;SOPERATIONINFORMATION,ATURNINGDIRECTIONISDECIDED,ANDTHENLIGHTENTHETURNINGLAMPASTHECORRESPONDINGCHANGESACCORDINGTOTHEDRIVER,THECONTROLCOMMANDSHOULDBERESPECTIVELYSENTTOTHEMAINCONTROLLEROFTHEWHEELLOADERANDTHEEXECUTIVECOMPONENTSOFLIGHT,RAINBLOWS,ANDBRAKE,THENTHEDISPLAYINSTRUMENTSHOULDREADTHEFEEDBACKANDJUDGETHEEXECUTINGIMPLEMENTATIONWORKINGCONDITIONSITSHOULDGAINTHELA

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