超声波检测数据高速采集和传输技术的研究

,,(,200233):100MHz,(PCI)(FPGA)(PLD),,:;;;;:TG115.28:A:100026656(2003)0820395204RESEARCHONTHEHIGH2SPEEDDATAACQUISITIONANDTRANSFERFORULTRASONICTESTINGLIJin2song,YEChen,MEIDe2song(NuclearNondestructiveTestingCenter,Shanghai200233,China)Abstract:Anultrasonictestingsystemwithhigh2speeddataacquisitionandtransferwasdeveloped.Atleast100MHzhigh2speedA/Dtechniquewasusedinreal2timedataacquisitionsystem.ThePCI(programmablecommunica2tionsinterface)real2timetransfermodesolvedtheproblemofdatastorageandtransferoflargecapacity.Thekeyappara2tusFPGA(fieldprogrammablegatearray)andPLD(programmablelogicdevice)adoptedcouldmeettheneedsofdevelop2mentandresearch,whichcouldkeepsecretandreducethevolumeofthesystem.Keywords:Ultrasonictesting;Signalprocessing;Analog/digitalconversion;Hardware;Software,,,,,,,[1,2]1,PANAMET2:2002204215RICSMETECR/DTECHK2KSOFRATESTTECNATOM,,100MHzA/D,,A,BC,,,A/D,,,259325820038NDTVol.25No.8Aug.2003©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.PC,,,()(1)12.1ADAC132140MHz,WIN2DOWSNT,A()A,B,C,lv,lw2.2A/D,100MHz(,)100MHzA/D,,,3,3.1A/D,,CL=5900m/s,CS=3230m/s,,,,,3.1.1,,,,1mm,0.339s,10%(0.1mm),0.0339sfM29.5MHz(1/0.0339s),(Nyquist)FN2fM,FN60MHz40MHz,FN80MHz,,100MHz,,,3.1.2,,64kByte200MHz,64kByteT693:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.T=64200=320s,45,,HH=CSTcos=3203230cos452=365mm,,15MHz,30MHz,64kByteT=6430=2133s70,HH=CSTcos=21333230cos704=589mm250mm,3.2A/D[3],A/D8200MHz,8,64kByte16,70MHz,4,,25MByte/s,,,3.3(FIFO),,FIFO,,FIFO,,,FIFO100MHz,4[47]4.1,ISA,,16,8MHzCPU,,PCI/O,ISA,,(),,VESAPCIPCI(PC)/(2),PCI//,A/D,,PCI24.23316FIFO,PCI,PCI4.2.1PCIPCIFPGAPCIPCI,PCI,FIFOPCIFIFO793:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.4PCIFIFOPCIPCIFI2FOFIFO(4)4.2.2PCIPCIPCI,FIFOPCI,PCIFIFOPCIFIFO;,FIFOFIFOPCIPCI4.2.3FIFOFIFOFIFO,PCI,FIFO,4.3,PCIPCIPCI,PCISIG,,,816,,32(8),1632,,,,////,,,,10,0/01010101,01010101,00001111,40,010100005(1),,140MHz,(2),,,(3)PCI,(4)FPGAPLD,,,[8,9](5),,:[1]..[M].:,1996.[2].[M].:,1995.[3],.[M].:,2000.[4],,,.PCI[M].:,2000.[5],.PCI[M].:,2000.[6],.[M].:,2000.[7],.[M].:,2000.[8],.[M].:,1999.[9],.PLD[M].:,2001.893:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.