DSP信號處理技術(shù)在管道檢測中的研究與應(yīng)用.pdf

1、合肥工業(yè)大學(xué)碩士學(xué)位論文DSP信號處理技術(shù)在管道檢測中的研究與應(yīng)用姓名：陳琨申請學(xué)位級別：碩士專業(yè)：電路與系統(tǒng)指導(dǎo)教師：何輔云20090401TheStudyandApplicationofDSPtechnologyforPipelineInspectionAbstractThepipelinesystemiSanimportantimplementforenergyexchangeandtransportation，whichismo

2、reandmoreusedinpetroleumandchemicalindustryetc，especiallyintransportationprojectofpetroleumandnaturalgasHowever，industrialpipelinesareoftenusedunderillconditionsandhavetoendurekindsofpressure，weightandcorrosionThesecanen

3、genderdefectsandresultinaccidentsSoitisnecessarytodetectanddiagnosepipelinesregularlyorirregularly，andmakesureofthesafeoperationofpipelinessystemTechnologyofNonDestructiveTesting(NDT)iSincommonuseinpipelineinspectionindu

4、stryItcancheckthepipelineforinternalorsurfacedefections，aswellascapabilitytexturalstatusandphysicalqualityofpipelinesAmongkindsofmethodsofNDTtechnology，magneticflux1eakageinspectionhasbeenwidelyappliedbyvirtueofitsquicks

5、peed，highsensitivityandlowerrequirementofworkpiecesurfacestatusetcAtpresent，pipelineinspectiontechnologyisstillintheanalogtechniquephaseItiscomplicatedtodesignanddifficulttodebuganalogsignalsprocessingcircuitsAndinthepro

6、cessofsignaltreatmentandtransmission，itlSeasytoformtheaccumulationofnoisewhichdoesharmtopipeinspectionThus，weneedtesearchdigitalpipelineinspectiontechnologyDigitalSignalsProcessingtechnologyisprogressingwiththedevelopmen

7、tofcomputerandelectronictechnologyWithitsobvioussuperiority，suchasquickspeed，highprecision，stableandreliableoutputetc，itisbroadlyusedincommunications，industrialcontrol，graphicsandimagesandotherfieldsThisarticlecombinespi

8、pelinedetectionwithdigitalsignalprocessing，anddevelopanalogpipelineinspectiontechnologytodigitalpipelineinspectiontechnologyFirstofall，thearticlepresentsthesignificanceofpipelineinspectionBycomparingthedifferentmethodsof

9、thecommonNon—destructivetestingtechnologies，wechoosemagneticfluxleakagetestingatlastThenthedevelopmentofmagneticfluxleakagetestingandDSPtechnologyisintroduced，aswellasrelatedtheoryofthetwodimensionsmagneticfluxleakagetes