多通道数据采集存储系统的设计与实现

《多通道数据采集存储系统的设计与实现》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、哈尔滨工程大学硕士学位论文万方数据多通道数据采集存储系统的设计与实现ABSTRACTWiththedevelopmentofunderwateracousticengineering,arraysignalprocessingtechnologyhasbeenintroducedintounderwateracousticengineeringgradually,andassistspeopletoexplorethemysteriousoceanasanimportantresearchdirectionof

2、underwateracousticengineering.Asatypicalrepresentativeofnewtypesonarsystem,thesonararraysystemimprovesseriesofperformancescomparedtoasingletransducer,suchasdirectivity、sensitivityandgainfunction.Italsopreparesmaterialconditionsforthestudyofarraysignalprocess

3、ingtechnologyintheunderwateracousticengineering.Themultichanneldataacquisitionandstoragesystemisdesignedtomeetthepick-upsignalrecordingdemandofsonararray.Thesystemtakessynchronousacquisitionofthe48elementssonararray’spick-upsignal,whichisprocessedbythesignal

4、conditioning,andgetsthetimeinformationofdataacquisitionpointwiththehelpofGPS.Thestarttimeofdataacquisitionissynchronizedwithintegralpointtimeaccurately,theequipmentscanworksynchronouslytogetsoundfieldinformationofdifferentpointsinspaceatthesametime.Thedataac

5、quiredandthecorrespondingtimeinformationarepackedandstoredintostoragemedium.Themaincontentofthethesisincludesthedesignofsystem、thedesignandrealizationofhardwareplatform、thedesignofthecorrespondingsoftwareandsoon.TheEP2C8Q208modelsofFPGAandperipheral-richdual

6、-coreprocessorOMAPL138aretakenasthemaincontrolchip,andonthebasetheperipheralcircuitdevelopsaccordingtothefunctiondemand.Thesystemuses6piecesofADchipstocompletethe48-channelanalog-digitalconversion,accomplishesaccuratetimemanagementwiththehelpofGPSandatomiccl

7、ockandtakesSATAharddisk,whosecapacityis512GB,asstoragemediumtorecordthedataacquired.ThroughthecoordinationworkofFPGAandOMAP,thesignalinformationacquiredbyADchipsisstoredintoharddiskcompletely,whichmeetsthesystemfunction’sdemand.Atlast,testinlaboratoryandfiel

8、dexperimentaretakentoverifythesystem’sfunctionparameterandperformance.Theconsequencesofthetestsshowthatthemultichanneldataacquisitionandstoragesystemmeetseachfunctiondemand,worksteadilyandachiev