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1、附录AEmbeddedLinux-basedacquisitionsystemWiththerapiddevelopmentofinformationtechnology,peopleneedtoaccurate,fastandconvenientaccesstolargeamountsofdataandbeabletoquicklyextractusefulinformation.EmbeddedSystemsistheITnetworktechnologyandanewdirectionoftechnologydevelop
2、ment.AmericanfuturistTimorpredictedduringhisvisittoChinain1999:4~5yearsafterthetoolwillbeembeddedPCandtheInternetisthesecondgreatestinventionafter.20thcentury90's,theapplicationofembeddedtechnologyinfullswing,hasbecomethecommunicationsandconsumertechnologyproducts,th
3、emainplatform.Inthefieldofautomaticcontrol,notonlycanbeusedinATMmachines,vendingmachines,industrialcontrolandotherspecialequipmentandmobilecommunicationsequipment,GPS,acombinationofentertainment,embeddedsystemsplayahugeroleinthesame.Thedevelopmentofembeddedtechnology
4、makesiteasytodevelopembeddedsystems,reducingdevelopmentcosts,genericproductsincreasedtoreplacement.Combinationofthetraditionalembeddedsystemsaresmall,energy-less,anti-interferenceability,stablecharacteristics,thedevelopmentofembeddeddataacquisitionsystemproducts,whet
5、herasastand-aloneproduct,orafunctionofasystemofmodules,allItisverymeaningful.DataAcquisitionSystemisacomputer,communicationsandelectronictechnology,industrialcontrolforanintegrateddetectionsystem.ThispaperintroducesembeddedLinux-baseddataacquisitionsystemhardwarearch
6、itectureandsoftwaredesign.Toenhancethesystemtorespondtothereal-timeperformanceandmulti-taskprocessingcapabilityofhardwareusedintheARM9microprocessortechnology,atthesametimeLinuxoperatingsystemmigration,systemreliabilityandscalabilitycanbeimproved.Designedtomakefullus
7、eofthecharacteristicsofembeddedLinux.Systemsoftwaremoduleshaveadataacquisitionmodule,dataprocessingmodule,datamodulesanddatacommunicationsdiagnosticmodule.EmbeddedLinuxoperatingsystemwillintroduceadataacquisitionsystemdesignandacceleratethedevelopmentofthesystemtofac
8、ilitatethefunctionsofthefutureexpansionoftheobservationaldatatoimprovethetimelinessandaccuracyofobservationtoachievetheautomation.E
