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,,1),,(,300072):DSP()FPGA(),:;;;:TG115.28:A:100026656(2003)0620287204DESIGNOFON2LINEDETECTIONSYSTEMFORTHESURFACEDEFECTSINSTEELSTRIPSBYCOMPUTERVISIONTECHNOLOGYHULiang,DUANFa2jie,DINGKe2qin1),LEIYong2qiang,YESheng2hua(DepartmentofPrecisionInstrumentsEngineering,TianjinUniversity,Tianjin300072,China)Abstract:Anon2linedetectionsystemforthesurfacedefectsinsteelstripsbymeansofcomputervisiontechnologywasin2troduced.Automaticdetectionanddiscriminationofthedefectssuchasbubbles,inclusions,rollingskins,scratchesandrollmarkscouldberealizedbythecombinationofDSP(digitalsignalprocessor)andFPGA(fieldprogrammablegatearray).Thesys2temwasconvenienttobeupgradedinhardwareandsoftwareforitsmoduledesign.Keywords:Nondestructivetesting;Computervisiontechnology;Steelstrip;Surfacedefect,,,,,,,100%;,;,;,2060CCD():20032032101),100013ASIC(),FPGADSP1v,(1),,(,)(,)[1],CCDCCD,CCD,78225620036NDTVol.25No.6Jun.2003©1995-2003TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1,,CCD,CCD2,xx,WCCDn,x=W/n;yy,vCCDT,y=vT2x=y,CCD,vH=LFnTHLCCDF018mm0.8mm,1800mm,01.5m/s,1mm,1mmCCD1.5m/s,0.8mm,CCDT=y/v=0.810-3/1.5=0.53msCCDn=1800/0.8=2250,n=2700,CCDf=2700103/0.53=5.094MHz,5.094MHz,2700CCDTCD1501C,5000,7um,3000,=50007um/1.8m=0.01942CCDA/DFPGADSP(3)32.1,(1800mm),,,(),CCD,QQ=EtEtCCD,CCD100%,(),CCD,,;,;,(1mm),882:©1995-2003TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,CCD,555nm,,,,2.2CCDCCD,,CCD,,CCD812Bit,,ll=2f+f+f=53.42f=0.0194,f=100mm,l=5134ml,,CCD1520MHzKodakKLI25001G,5000,15MHz;KLI28811,8800,30MHz,CCD,,,2.3A/D,ADC()ADC,ADCADC01800mm,01.5m/s,0.8mm0.8mm,n=2700,f=51094MHz,CCD256,8BitA/DA/D(AGC),ADC,(2108/s),,ADCSPT7734,8bit,4107/s,175mW2.4FPGAADC,FPGA,,FPGAFPGA,,,FPGAEPF10K1802.5DSP[2,3],FPGADSP,DSP,,(4)CPLD(),FPGA+DSP,,4DSP+FPGA,,,,,(5)[4],982:©1995-2003TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.5iLearn,,,,,(ANN,KNNRCE),,;,,;;,,DSP,,2.6PCI(PeripheralComponentInter2connect),3233MHz,132Mbyte/s,;,,,3:(1)(2)(3)FPGADSP(4)FPGADSP,,,CCD,:[1]JohnCBadger,SeanTEnright.Automatedsurfaceinspec2tionsystem[J].IronandSteelEngineer,1996,73(3):48-51.[2]RautaruukkiNewTechnologyCorp.Defectclassificationinsurfaceinspectionofstripsteel[J].SteelTimesInternation2al,1992,16(5):214-216.[3]ChrisACarisetti,TheodoreYFong,CharlesFromm.iLearnself2learningdefectclassifier[J].IronandSteelEngineer,1998,75(8):50-53.[4],,.[J].,2000,22(7):312-315.(286)8sRC,,(7)(8),:[1].X[M].:,1982.[2]SavitzkyA,GolayMJE.Smoothinganddifferentiationofdatabysimplifiedleastsquaresprocedures[J].AnalyticalChem2istry,1964,36(8):1627-1639.[3]MarchandP,MarmetL.Binomialsmoothingfilter:awaytoavoidsomepitfallsofleast2squarespolynomialsmoothing[J].ReviewofScientificInstruments,1983,54(8):1034-1041.[4]BattistoniC,MattognoG,RighiniG.Spectralnoiseremovalbynewdigitalsmoothingroutine[J].JournalofElectronSpectroscopyandRelatedPhenomena,1995,74:159-166.[5].X[S].,1973.[6],.[M].:,1999.[7]LangfordJI.ArapidmethodforanalysingthebreadthsofdiffractionandspectrallinesusingtheVoigtfunction[J].JournalofAppliedCrystallography,1978,11(1):10-14.[8].[M].:,1988.[9],,,.XVoigt[A].X[C].:2003.092:©1995-2003TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.