對(duì)便攜式索力測試的ARM智能系統(tǒng)的研究與開發(fā).pdf

1、東南大學(xué)碩士學(xué)位論文對(duì)便攜式索力測試的ARM智能系統(tǒng)的研究與開發(fā)姓名：杜衡申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：測試計(jì)量技術(shù)及儀器指導(dǎo)教師：汪鳳泉20060301Abstract剛SprojecttakestheresearchteamtwoyearstOindependentlydevelopasetofportableintelligentinstrumentontestingthebridge’ScabletensionIntheCOUrSeo

2、fdevelopmenttheteamhassuccessfullyamendedthetestingequipmentaswellasthemethods，andhasimprovedthetheoryoftensiontestingIalYlproudtObeoneof也etwodevelopersIIlDecember2005thisinstrumentwasannouncedastheprovincialtechnologica

3、lachievementinJiangsuprovinceSo缸astheequipmentiSconcerneda32bitR／SC(ReducedInstructionSetComputer)intelligentchipcalledARM(AdvancedRISCMachinelischosenasitsMPU(MicroProcessunit)ARMcanbothmallagethewholesystemautomaticall

4、yandd0digitalsignalprocesseffectivelyAtpresentinthedomesticrelevantfieldstherearesomejuniorindustryportableintelligentproductsaswellassomelabones。withSCM(SingleChipMicyoco)orDSP(DigitalSignalProcesslastheirMPUHoweverthep

5、roductbasingonARMhasnotdevelopedyetByexperiments，ithasbeenprovedthatthisinstrumentismorereliableandmorepracticalSOthatit’SworthyofrecommendationintherelevantfieldWhat’smoretheteamhasdesignedandrealizedthreemodulesforthis

6、instrumenLwhichrespectivelyarematchingmoduleforsensor(aceelerometer)，processingmoduleforelectricsigr出andmodulatingmoduleforpowersupplyTheintegratorofthesethreemodulesprovidesasolidhardwarefoundationforprecisetestingTheLC

7、D(LiquidCrystalDisplay)withgreatpixelsand16keyboardmatrixmakethemanmachineconversationmucheasierAtlpartsofthisinstrumentareinstalledinaspecialmetalbox(25019050)，SOitOaRmeetthedemandsoffieldtestingInordertogetprecisefrequ

8、ency4096一dotFFT(FastFourierTransform)andlowfrequencysampling(50Hz)areadoptedTherefore，thisinstrumentcarttell10“2HzatmostTheintegratorofpreamplifierand10bitADC(AnalogDigitalConversion)iSabletorecognizethefaimsignalproduce

9、dbythesensor，Ikteclmo|ogiesofzoomdisplayandswitchingdisplayplayanimportantroleinshowingthevarioussignalsofdifferentfrequenciesanddifferentamplitudesThankstothesetwotechnologies，theLCDofthisinstrumentCandisplaybettercurve

10、sthanthescreenofPC(PersonalComputer)doCSFinallyadaptingfromtheexistingmethod，amoreeffectivemethodhasbeendesignedtomakethisintelligentsystemtellthemainfrequenciesofthesignalandeliminatethelowfrequencynoiseautomaticallyWit

11、hregardtothetheorythevibration—basedcabletensionevaluationisnotsuitableforallcables，especiallytheonesofgreatstiffnessSothetheoryofmarginbetweenedeninstinctivefrequencieshasbeenappliedtocalculatethetensionofsuchcables，whi