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1、附录AEmbeddedLinux-basedacquisitionsystemWiththerapiddevelopmentofinformationtechnology,peopleneedtoaccurate,fastandconvenientaccesstolargeamountsofdataandbeabletoquicklyextractusefulinformation.EmbeddedSystemsistheITnetworktechnologyandanewdirectionoftechnologydevelopment.Americanfutu
2、ristTimorpredictedduringhisvisittoChinain1999:4~5yearsafterthetoolwillbeembeddedPCandtheInternetisthesecondgreatestinventionafter.20thcentury90's,theapplicationofembeddedtechnologyinfullswing,hasbecomethecommunicationsandconsumertechnologyproducts,themainplatform.Inthefieldofautomati
3、ccontrol,notonlycanbeusedinATMmachines,vendingmachines,industrialcontrolandotherspecialequipmentandmobilecommunicationsequipment,GPS,acombinationofentertainment,embeddedsystemsplayahugeroleinthesame.Thedevelopmentofembeddedtechnologymakesiteasytodevelopembeddedsystems,reducingdevelop
4、mentcosts,genericproductsincreasedtoreplacement.Combinationofthetraditionalembeddedsystemsaresmall,energy-less,anti-interferenceability,stablecharacteristics,thedevelopmentofembeddeddataacquisitionsystemproducts,whetherasastand-aloneproduct,orafunctionofasystemofmodules,allItisveryme
5、aningful.DataAcquisitionSystemisacomputer,communicationsandelectronictechnology,industrialcontrolforanintegrateddetectionsystem.ThispaperintroducesembeddedLinux-baseddataacquisitionsystemhardwarearchitectureandsoftwaredesign.Toenhancethesystemtorespondtothereal-timeperformanceandmult
6、i-taskprocessingcapabilityofhardwareusedintheARM9microprocessortechnology,atthesametimeLinuxoperatingsystemmigration,systemreliabilityandscalabilitycanbeimproved.DesignedtomakefulluseofthecharacteristicsofembeddedLinux.Systemsoftwaremoduleshaveadataacquisitionmodule,dataprocessingmod
7、ule,datamodulesanddatacommunicationsdiagnosticmodule.EmbeddedLinuxoperatingsystemwillintroduceadataacquisitionsystemdesignandacceleratethedevelopmentofthesystemtofacilitatethefunctionsofthefutureexpansionoftheobservationaldatatoimprovethetimelinessandaccuracyofobservationtoachievethe
8、automation.E
