基于DPS的RFD基带模块设计

:2006-05:(1980),,,;,,DSPRFID,,,(,210096):TMS320F2812,DSP,,:;DSP;;;:TP332:B:1006-2394(2006)05-0056-03DesignofaBaseBandModuleforRFIDSystemBasedonDSPZHOUWei,LIHong2sheng,ZHUYi,LIYan(InstrumentScienceandEngineeringDepartmentofSoutheastUniversity,Nanjing210096,China)Abstract:ThehardwareandsoftwaredesignsofabasebandmoduleforRadiofrequencyidentification(RFID)systemaredescribedinthispaper.ThissystemusesTMS320F2812asCPUandworksonultrahighfrequency(UHF).Thesignalencoding,decodingandanti2col2lisiontechniqueinmultipletagsidentificationarediscussed.Thissystemworksefficientlyandstablyinthetestingenvironment.Keywords:RFID;DSP;encoding;decoding;anti2collisionalgorithm11.1RFID,,11,,,,,RFID,1.2DSPTITMS320F2812CMOS,1.8V,I/O3.3V;150MHz,6.67ns,CPU8KB(16)Flash18KB(16)(SRAM)1MB,SPI;2,(PWM)(CAP);JTAG,28121.8VI/O3.3V,5V,TITPS767D318,DSP3.3V1.8V2812FlashSRAM,RAM,3.3VSRAM,CYCY7C1021CV33SPIEEPROM2812(SCI),,6520065,1.3,14s,1/80,3/81(2ASK)05V10D/Az,I/O,2812D/A,PWMD/ATMS320C2812PWM,3.3V,05V:f(t)=A0+n=1(Ancos2nft+Bnsin2nft)(1),f=1/T,AnBn:,k5VPWM:A0=5k(2)An=51n{sin(nk)-sin[2n(1-k/2)]}(3)Bn=0(4),AnPWM,;A0D/APWMk,05VD/APWMD/A,PWM(2),k(kmin),kminPWM(6.67ns),PWM()D/APWM,,PWM2812150MHz,D/A10,kmin1/1024PWM150kHz,,RC22D/A1.4,210101,11000,(CAP),,,0122.1DSPDSP,DSP;,I/OSPIEEPROM,,,(CRC),,332.2RFID,ScrollID:8ID7520065ScrollID,112s,(CRC);,,PingID:,PingID8,,,,(TDMA)(),,3,,88(),()PingID33(3),;ScrollID,()PingID00H,110,31103,110011001XX...,110011010XX...,110111110XX...3110301111137110011PingID,110011001XX...110011010XX...12PingID,,110011ScrollID110111,3110443RFIDDSPRFID,()10ms20ms,100%;()1s20;8m,RFID,,:[1][]KlausFinkenzeller,.[M].,2001.[2].[M].,1996.[3][]TI,.TMS320C28XDSPCPU(,)[M].,2005.[4]UHF.Auto2IDClass1b,ContactlessMemoryChip96bitsEPCwithInventoryandKillfunction.pdf[Z].2004.()RT913,DSP,,,::357.7660V,20VA/,0120%;:30.150A,20VA/,0120%;:4070Hz,0.002Hz;:0.00359.99,0.01;:0.05%,0.1%;500,;,,,;;,;AT;:0.5%();:0.2%;:0.5F:0.01%/3min;:221,10%();:RS323RS485,Windows9xWin2dows2000;:220v15%8520065