搜索
:2002-12-04111()Vol.11No.12003JournalofAnhuiInstituteofArchitecture&Industry2003IC(,230039):IC,IC,100cm150cm,,,:,,,IC,:TP273+15,,,,,,,,,IC,,,,;,IC,,,IC(),,IC,(),ICIC,IC,,IC,,IC13.56MHz,30cm,,IC,100cm150cm,IC1ICRS845,RS485,,,1©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.12211IC22IC,ICICIC,,:,13.56MHz,IC,;,,,IC,,,EEPROM,EEPROM,IC212,,IC,,1192104/s8,1,12941,:IC©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1()12,3456(N-1)N=4091N+6,N+72()12,3456(N-1)N=4091N+6,N+7l2,,5,,IC13.56MHz,106Kbit/s,9.4s,ASK(AmplitudeShiftKeying)10%(NRZ);(loadmodulation),IC,IC,IC/,fs847KHz,IC,(PSK)3IC213ICIC,ASIC(ApplicationSpecificIntegratedCircuit),,(ASIC)RF(RadioFrequency),EEPROM,3IC,PVC,,13.56MHz,LC,,,,,,2V,,214ICIC,,IC,IC,,,,,,4,,3,Windows2000,VisualC++6.0VisualBasic,AcessFoxPro,,5,:,;05()11©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.Cpar,Rpar45;4IC,,,,1Texaslnstruments1Tag-itReaderHostProtocolReferenceManual,199921IC1:,2000:23108311:,1985:111300411:,1998:85965,1IC1,200l,(10):68151,:IC©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.THEMANAGEMENTSYSTEMOFTHEFARDISTANCEENTRANCEGUARD&CHECKONWORKATTENDANCEBYCONTACTLESSICCARDSongKaihongWuXianliang(Dept.ofElectronicEngineeringandInformationScience.AnhuiUniversity,Hefei230039)Abstract:radiofrequencyrecognitiontechnology,computertechnology,radiofrequencyantenna,ICcard,en2tranceguard&checkonworkattendanceKeywords:ThispaperintroducesthemanagementsystemthatusesthecontactlessICcardtoputupthefardistanceentranceguard&checkonworkattendance,ithassuccessfullyemployedtheradiofrequencyrecogni2tiontechnology,microelectronictechnology,computertechnology,andICcardtechnology.Theeffectivedis2tanceisbetween100and150cm.Thesystemmaybeusedaselectronicmanagementtocheckonworkatten2danceofenterprisestaff.Furthermore,thesystemhasmanygoodfeatures,suchassafety,reliability,andre2altimecharacteristics.Itisconvenienttooperateinpractice,andthesatisfactoryeffectcanbeobtained25()11©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.