多通道数据采集卡同步功能的设计与实现_高健

第25卷第1期2008年1月　　　　　　MECHANICALELECTRICALENGINEERINGMAGAZINEVol.25No.1Jan.2008:2007-07-24:　(1982-),,,。多通道数据采集卡同步功能的设计与实现高　健,杨成忠,唐明明(,310018)　:介绍了多通道数据采集卡同步功能的实现方法,讨论和处理了实现同步功能的相关问题。该设计采用一种二级时钟分配方案,不仅实现了板内各通道的真正实时的同步采集,并且可以方便灵活地实现多块板卡的板间同步,具有高速、高精度、多路同步采集的特点,可广泛应用于对信号的同步性能要求较高的数据测量系统中。:数据采集;同步触发;A/D转换:TP393　　　　:A:1001-4551(2008)01-0082-04Designandrealizationofthesimultaneousfunctioninthemulti-channeldataacquisitioncardGAOJian,YANGCheng-zhong,TANGMing-ming(CollegeofAutomation,HangzhouDianziUniversity,Hangzhou310018,China)Abstract:Thedesignandrealizationofthesimultaneousfunctioninthemulti-channeldataacquisitioncardwereintroduced.Andalsothecorrelativepointsofthesimultaneousfunctionwerediscussedanddisposed.Thedesignusedatwo-stepclockdistri-bution,whichnotonlyrealizedthereal-timemulti-channelsimultaneousacquisitioninonecard,butalsorealizedthesimultane-ousacquisitionfunctioninmorethanonecardveryconveniently.Thecardhasthefeaturesofhigh-speed,highprecisionandmulti-channelsimultaneousacquisition,canbewidelyusedinthedataacquisitionsystemwhichhashighrequestofthesimulta-neoussignal.Keywords:dataacquisition;simultaneoustrigger;A/Dconvert0　前　言,A/D。、、、,,A/D。,,A/D。ICA/D,,、,;A/D、,,。,。,,。1　数据采集卡的整体设计,4A/D,:、、、PCI。,1。、[1]。,PGA207,1,2,5,10;LTC1063,5。A/D。,TIADS8323,16A/D,4A/D[2]。CPLDARM,,CPLD,,。ARM。。PCI,PCIRAM/RAM/,,RAMCY7C09279V。RAM/,/RAM,,。PCIPCIPLX9054,PCI,PCI。1　2　同步功能的实现2.1　,。,。A/D,A/D,[3]。,。,A/D;A/D,A/D。,。,,A/DA/DS8323。,,4A/D,,。,,。,,,,,。,1∶4,。,2。2,A/D,4A/D。CDCV304,1∶4,100ps,0～100M。4,100ps。。,,。,,。4A/D,,100ps,4,A/D;,A/D4A/D,4A/D,A/D。,,4[4-6]。2　2.2　,。,。,。,,,3。,。,112。,·83·1　,:()(,)。3,,(1)1,(CLOCK1),24A/D,3(CLOCK2,CLOCK3,CLOCK4),2。(31),,1A/D;(32,3,4),,。,A/D,A/D,21∶44A/D。,,,,A/D。3　,,,,A/D。,,,。,,,,200ps,,A/D,A/D。,,1(),416A/D,。200ps。2.3　,2A/D100k,4。,ns,,ns,。,A/D。4　4A/D,,,1。,121,342。,。,(,)。·84·　　　　　　251　/V1/V2/V3/V4/V0.3000x0F500.2990x0F480.2990x0F5C0.3000x0F520.2990.9000x2E0F0.8990x2E0a0.8990x2E1C0.9010x2E0B0.8991.7000x57051.6990x56FE1.6990x570B1.7000x57081.6992.3000x75BA2.2990x75BA2.2990x75BF2.2990x75BB2.2993　结束语。,;,A/D,,。,,,ns。,,,,。(Reference):[1]　,　,.Windows[J].,2002,29(9):56-59.[2]　　,,.[J].,2005,21(3):62-63.[3]　,,　.[J].,1999,14(2):226-229.[4]　.PC10416[J].,2005(2):39-42.[5]　AppliedMicroCircuitsCorporation.PCIProductsDataBook-S5920/S5933[EB/OL].[1998-07-08].[6]　MATTHEWM,BAOM.Developmentofautomatedreal-timedataacquisitionsystemforroboticweldqualitymonito-ring[J].Mechatronics,2002,12(9-10):1259-1269.[:](上接第49页)　　,4,[6,7]。4,。4　()4　结束语DM642,DM642,,。,、、。,。(Reference):[1]　,　.DSP/BIOS[J].,2005,24(12):33-36.[2]　TI.TMS320C6000PeripheralsReferenceGuide[M].TI,2003.[3]　BROWNTA,KOPLOWITZJ.Theweightednearestneigh-borruleforclassdependentsamplesizes[J].IEEETrans-actionsonInformationTheory,1979,16(10):617-619.[4]　.[J].,1994,31(10):51-54.[5]　,,.[J].,1998,14(3):80-86.[6]　,,.DSP[J].,2005,31(4):178-180.[7]　,,　.DSP[M].:,2002.[:　]·85·1　,: