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毕业设计(论文)外文资料翻译系别：电子信息系专业：通信工程班级：B090310姓名：陈少雄学号：B09031002外文出处：网络资源附件：1.原文；2.译文2013年03月20日RFIDBasicPrincipleWhatistheRFID?RFIDistheabbreviationforRadioFrequencyIdentification,calledelectronicslabel.WhatistheRFIDtechnology?RFIDrecognitionisanon-contactautomaticidentificationtechnology,rfsignalthroughitsautomatictargetrecognitionandaccesstorelevantdata,identifyworkwithoutmanualintervention,itcanworkinvariousenvironments.RFIDtechnologycanidentifyhigh-speedmovingobjectsandcanidentifymultipletags,theoperationisfastandconvenient.Accenturelaboratory'schiefscientistsiralexfergusonfeelsRFIDisabreakthroughtechnology:first,canidentifyaveryspecificobjects,ratherlikethecodethatcanidentifyclassobjects;second,theuseofrf,canreaddatathroughexternalmaterials,andbarcodemustrelyonlasertoreadinformation;third,canalsoreadontomultipleobjects,andbarcodecanonlyreadonebyone.Inaddition,storeofinformationisalsoverybig.WhatisthebasiccomponentofRFID?ThemostbasicRFIDsystemconsistsofthreeparts:Tag:Tagconsistsofcomponentsandchips,eachTaghasonlyelectroniccoding,adheretotheobjectforidentifieringtarget;Reader:read(sometimesalsocanwrite)labelinformationequipment,itcanbedesignedforportableorfixed;Antenna:Transmitradiofrequencysignalsbetweeninthelabelandreader.ThebasicprincipleofRFIDtechnologyiswhat?ThebasicprincipleofRFIDtechnologyisnotcomplex:Labelintothefield,Receiveradiofrequencysignalsfromreadercollision,withalltheenergystoredinachipoftheproductinformation（passivetag,thereisnosourcelabelorlabels）,Oractivelytosendafrequencysignals（activetagandtolabelorlabels）；toreadinformationandunderstandingofthedecoderafterthecentralinformationsystemstocarryouttherelevantdataprocessing.WhatmakesretailerssohighlyRFID?SanfordBernsteincristiano,accordingtoanalystsestimatetheretailingcompany,byadoptingtheRFID,wal-martcansave$8.35billioneachyear,mostlybecauseofthepurchaseofartificialviewdoesnotneedtosavethecostoflaborcode.Althoughsomeanalyststhink$8billioninthedigitaltoooptimistic,butundoubtedly,RFIDhelpsolvetheproblem:thetwobiggestretailcommoditiesandloss(brokenbytheftandsupplychainwasunsettledandlossofproducts),nowawal-mart,stealingalossisalmost20billiondollars,ifalegitimatebusinessturnovercanachievethisnumber,caninAmerican1,000enterprise'slistoftopfirst694.Researchorganizationsestimate,Thisrfidtechnologycanhelptoreducethelevelof25%reductionandstock.ThetypicalapplicationofRFIDtechnologyiswhat?LogisticsandsupplymanagementManufacturingandassemblyAirlinebaggagehandlingMail/expressparcelAdocumenttracking/librarymanagementAnimalidentitytagsMovementAccesscontrol/electronicticketsAutomaticcharge.RoadRFIDautomaticrecognitiontermexplanationmicrowave:wavelengthof0.1-100centimetersorfrequencyin1-100GHZelectromagneticwave.radiationfrequency:usuallymicrowave.electronictags:storeddataobjectcodeidentificationtag,alsocalledrfCARDS.passivetags:withoutpowerandinternalbyreceivingmicrowaveenergywork.activetags:byinternalbatteriesworklabels.microwaveantenna:usedforlaunchingandreceiveasignal.readdevice:Usedtoreadthelabelsinelectronicdata.programmingdevice:forelectronicdatawrittentothelabelorlabelsforthestoreddata.beambracketing:referstotheantennabeamrangeofmicrowaveirradiationrangelaunchpower.tagcapacity:Thelabelofprogrammingcanbewritteninthenumberofdigitsorlogical.A-Biz-utomaticidentificationtechnologyapplicationcaseframeASN-seniorfreightnoticeBIS-commercialinformationsystemDA-shipmentnotificationEAN--EuropeanarticlescodingEPCTM-electronicproductsONS-objectsnameresolutionservicesPML-entitymarkuplanguageUCC-unitycodingcommitteeUML-unifiedmodelinglanguageSystemcompositionandworkingprincipleThemostbasicRFIDsystemconsistsofthreeparts:Tag:Tagconsistsofcomponentsandchips,eachTaghasonlyelectroniccoding,adheretotheobjectforidentifieringtarget;Reader:read(sometimesalsocanwrite)labelinformationequipment,itcanbedesignedforportableorfixed;Antenna:Transmitradiofrequencysignalsbetweeninthelabelandreader.SomesystemshavereadersRS232orRS485interfacewithexternalcomputer(uppercomputersystem)connection,andexchangedata.Thesystemofbasicworkflowis:readerthroughtheantennasendcertainfrequenciesofrfsignals,whentherfcardtoentertheantennaworkingareainducedcurrent,rfcardsgainenergytobeactivated,rfcardswillowncodinginformationthroughthecardbuilt-intransmittingantennasendout,Systemreceivingaerialfromrfcardfromthecarriersignal,theantennaofaregulatortothereader,thereadertoreceiveasignalanddemodulatesanddecodestothesystemtodealwiththerelevant；themainsystembasedonlogic,determinethelegalityofsmartcards,indifferentsettingsmaketheappropriatetreatmentandcontrolsignalscontrolanddirectionofmovement.inthecouplingbetweeninductorsandelectromagneticway(),communicationprocess(FDX,HDX,SEQ)、Fromrfcardtothereaderofdatatransmissionoftheloadmethod(modulation,reversescattering,hightimeharmonics)andfrequency,fromthecontactmethodtransmissionafundamentaldifference,butallthereaderinprinciple,andthedecisionofthedesignstructuresareverysimilar.allthereaderisasimplematterofhighfrequencyandcontrolunittwobasicmodule.highfrequencyinterfaceinc