输油管道漏油检测系统中的数据采集与定位检测方案

ELECTRONICMEASUREMENTTECHNOLOGY30620076(300072):,Modem73M2901CLCygnalC8051F,;LabVIEW,MATLAB,,,:LabVIEW;;;AT;:TP274:ATechnologyofdataacquisitionandflawspottinginoilpipelineleakagedetectingsystemLiBingDuanFajieJiangZhongya(TianjinUniversity,NationalKeyLaboratoryofPrecisionMeasurementTechnologyandinstruments,Tianjin300072)Abstract:Thebasicprincipleofthissystemisusingsuctionwavetodetectthepointofleakageonoilpipeline,andthereareModemChip73M2901CLandCygnalC8051FseriesMicrochipinmakingupofanEmbeddedDataAcquisitionandTransmissionSystem.Thissystem,whichisalsocalledlowpositioncomputer,isfulfilleddataacquiringandtransmitting.Meanwhile,thehighpositioncomputercancommunicatewithlowpositioncomputerviapublictelephonenetworkbyusingLabView,andtheseacquireddatawillbeprocessedbytheToolboxofSmallWaveAnalyzinginMATLAB.Aftercompletingtheprocessmentionedabove,thepointofleakageonoilpipelinecanbedetected.Thewholesystemiscompact,andcansolvetheproblemofdataacquisitionintheprocessofdetectingpointsofleakageonoilpipeline.Besides,thesystemiseconomic,andaccordingtotheoperationinrealsituation,theeffectisverygood.Keywords:LabVIEW;leakdetection;datatransmission;ATcommands;waveletanalysis0,,,,,,,,1,:,,,,,,1,L,X,t1t2(1):X=L+t2(1)08:61:;t;L(1),,,,,,,,:2(t)=K(t)/P(t)1+K(t)EDeC1(2):,m/s;K,Pa;,kg/m3;E,Pa;D,m;e,m;t;t,22NCygnalC8051F021,ATModem,,ModemAT,Modem,,AT;,;,,,,,373M2901CLAT73M2901CLAT73M2901CL,73M2901CLATS99S51S53S54,RINGS51S52S53S54,S51=20,S52=30,S53=90,S54=110,3LabVIEW,,,,,(Mallat)Mallat,318303cn,k=2mZcm,k-1hm-2ndn,k=2mZcm,k-1gm-2n(3):cn,kkn;dn,kkn;hm,gm,4,,545,41,1/km/km1381793817801010103%2391563914601100125%33912039133-01130133%43812438126-01020105%5381383813501030108%63914539150-01050113%73817638178-01020105%8391253912001050113%,,,,,,[1].MODEM-73M2901CL/5V[J].2002,5:51268.[2],.RS-232[M].:,2001.[3].Internet[D].:,2005.[4]NationalInstrumentCorporation.SignalprocessingToolsetReferenceManual[Z].1999.[5].CWindows[M].:,2003.[6],.C8051F[M].:,2002.[7].[M].:,2000.[8]NationalInstrumentsCorporation.LabVIEWUserManual,NationalInstruments[Z].1998.,,,:92,300072E2mail:linbrid521@yahoo1com1cn;:022-2740191128