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1、工程硕士学位论文AbstractMineralresourcesisthepreciouswealthinourcountry,playinganimportantroleinnationaleconomicdevelopment.Thedevelopmentofthenationaleconomycausesagreatdemandformineralresources,leadingtoincreasinglyfrequentminingactivities.Withtheprogressofminingactiviti
2、es,thestabilityofrockmassinminesbecomechanged,andthatmayleadtocollapseofrockmass,whichbringsdirectthreattothelifesafetyofundergroundworkers.Acousticemissiontechnologyasanewdynamicnondestructivetestingtechnology,canbeusedtomonitorthestabilityofrockmassinmines.Itcanb
3、eusedtoforecastlandslidesandrooffallofrockmassinminestoavoidaccidents,whichhasgreatsignificanceforpromotingsafetyproductionofminesandprotectingthepeople'slifeandpropertysafety.ThemultichannelandportableacousticemissiondetectionsystemforrockmassinminesbasedonDSPisde
4、signedinthispaper,andthemainworkisasfollows:(1)Thissystemmainlyshouldcompletedataacquisition,signalprocessing,datatransmissionandfeatureparameterextractionfunctions.Accordingtothefunctionalrequirementsofthesystem,TMS320VC5402isselectedastheDSPchip,ADS7864isselected
5、astheA/Dconverterchip,andCY7C68013AisselectedastheUSBcommunicationchip,thentheoveralldesignschemeofhardwareandsoftwareoftheacousticemissiondetectionsystemaregiven.(2)Asforthehardwaredesign,theminimumsystemofTMS320VC5402,thememoryextensioncircuitsofTMS320VC5402,thei
6、nterfacecircuitsbetweenADS7864andTMS320VC5402,andtheinterfacecircuitsbetweenCY7C68013AandTMS320VC5402arealldesigned.HardwareisdesignedonthecircuitdesignsoftwareCadence16.5,avarietyofanti-interferencemeasuresareusedonthePCBdesign.(3)Intermsofthesoftwaredesign,theA/D
7、samplingprogramandFIRfilteringprogramaredesignedinCCSv5.2tocollectoriginalrockmassacousticemissionsignalandprocessFIRfiltering.BytheUSBfirmwareprogram,thedataoftheacousticemissionsignalafterfilteredistransmittedtotheuppercomputer.Theexecutablewaveletthresholddenois
8、ingprogramisexecutedontheuppercomputertodenoisethesignalfiltered,andthentheexecutablefeatureparameterextractionprogramisexecutedontheuppercompute
