城市智能公交识别系统外文翻译.docx

城市智能公交识别系统外文翻译.docx

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城市智能公交识别系统外文翻译

TheresearchofRFIDtechnologyandthebusstopsautomatically

WhatistheRFID?

RFIDistheabbreviationforRadioFrequencyIdentification,calledelectronicslabel.RFIDrecognitionisanon-contactautomaticidentificationtechnology,RFIDsignalthroughitsautomatictargetrecognitionandaccesstorelevantdata,identifyworkwithoutmanualintervention,itcanworkinvariousenvironments.RFIDtechnologycanidentifyhigh-speedmovingobjectsandcanidentifymultipletags,theoperationisfastandconvenient.

RFIDisatechnologywhichusesradiocommunicationbetweentagsandreaderstoautomaticallyidentifythelocationsofitems.InanetworkedenvironmentofRFIDreaders,enormousdataaregeneratedfromtheproliferationofRFIDreaders.Therawdatageneratedfromthereaderscannotbedirectlyusedbytheapplicationbecauseitconsistsofenormousvolumeofdataduplication,falsepositive,andfalsenegative.Thus,theRFIDdatarepositoriesmustcopewithanumberofqualityissues.Thesedataqualityissuesincludedataredundancy,falsepositive,andfalsenegative.Poordataqualityhasadverseeffectsattheoperational,tactical,andstrategiclevelsofanorganization.Thisisespeciallytrueinthehealthcarefieldwherecostpressuresandthedesiretoimprovepatientcaredriveeffortstointegrateandcleanorganizationaldata.

WhatisthebasiccomponentofRFID?

ThemostbasicRFIDsystemconsistsofthreeparts:

Tag:

Tagconsistsofcomponentsandchips,eachTaghasonlyelectroniccoding,adheretotheobjectforidentifieringtarget;

Reader:

read（sometimesalsocanwrite）labelinformationequipment,itcan

bedesignedforportableorfixed;

Antenna:

Transmitradiofrequencysignalsbetweeninthelabelandreader.

WhatisthebasicprincipleofRFIDtechnology?

ThebasicprincipleofRFIDtechnologyisnotcomplex:

Labelintothefield,Receiveradiofrequencysignalsfromreadercollision,withalltheenergystoredinachipoftheproductinformation（passivetag,thereisnosourcelabelorlabels）,Oractivelytosendafrequencysignals（activetagandtolabelorlabels）；toreadinformationandunderstandingofthedecoderafterthecentralinformationsystemstocarryouttherelevantdataprocessing.

BasicworkingprocessoftheRFIDsystem

TheRFIDsystemofbasicworkflowis:

readerthroughtheantennasendcertainfrequenciesofRFIDsignals,whentheRFIDcardtoentertheantennaworkingareainducedcurrent,RFcardsgainenergytobeactivated,RFcardswillowncodinginformationthroughthecardbuilt-intransmittingantennasendout,SystemreceivingaerialfromRFcardfromthecarriersignal,theantennaofaregulatortothereader,thereadertoreceiveasignalanddemodulatesanddecodestothesystemtodealwiththerelevant；themainsystembasedonlogic,determinethelegalityofsmartcards,indifferentsettingsmaketheappropriatetreatmentandcontrolsignalscontrolanddirectionofmovement.Inthecouplingbetweeninductorsandelectromagneticway,communicationprocess（FDX,HDX,SEQ）、FromRFcardtothereaderofdatatransmissionoftheloadmethod（modulation,reversescattering,hightimeharmonics）andfrequency,fromthecontactmethodtransmissionafundamentaldifference,butallthereaderinprinciple,andthedecisionofthedesignstructuresareverysimilar.allthereaderisasimplematterofhighfrequencyandcontrolunittwobasicmodule.highfrequencyinterfaceincludesbothtransmittersandreceivers,itsfunctionsinclude:

toproducehigh-frequencytransmitpowertostartandprovideRFcardenergy.TolaunchsignalusedtosenddatatoRFcards,ReceiveanddemodulationofhighfrequencysignalsfromRFcards.DifferentRFIDsystemwithsomedifferencefrequencyinterfacedesign,thesystemfrequencyinductivecouplinginterfacediagramshown.

Readersofthecontrolunitfeaturesinclude:

communicatewiththeapplicationsoftware,Applicationsoftwareandtoexecutetheorderofradiofrequencies；controlandcommunicationfromtheprincipleofthelord；signalofthedecoding.tosomespecificsystemsarethecollision,thealgorithmtoRFcardreader,andtothetransferofdataencryptionanddecryption,aswellasonradiofrequenciesandthereader'sauthenticationforanadditionalfunction.

TheRFIDsystemisakeyanddistanceoftheparameters.Atpresent,thepriceoflong-distanceRFIDsystemisveryexpensive,thustoimprovetheirreadingfordistanceofthemethodisveryimportant.InfluencefactorsofdistanceandRFcardreader,includingantennaworkingfrequencyofRFoutputpower,reader'sreceptionsensitivity,RFcardpower,antennaandtheresonantcircuitQvalue,antenna,RFcardreaderandthedirectionofthecoupling,andRFcarditselfofenergyandsendinformationenergyetc.Mostofthesystemofwritingisreadandwritedifferent,readthedistanceisabout40%to80%.

TheapplicationofRFIDsystem

（1）Applicationinhealthcare

Localizationofpatients,staff,suppliesandequipmentisveryimportantforhealthcarecenterstoimproveservice,savecosts,andreducerisks.PilotprojectsinhospitalsdemonstratethatRFIDlocalizationisavaluableapproach.LANDMARC,anRFIDlocalizationsystem（Lietal.2004）,hasbeenappliedtofacilitatethemanagementofhospitalsandotherorganizationsincaseofemergency.Thesystemoperatesatthefrequencyof308MHz,andiscomposedofactivetags,landmarktags,readers,andcommunicationdevices.Thepositionofanactivetagcanbedeterminedbycomparingthesignalstrengthdetectedandthesignalstrengthsoflandmarktags.Usingthissystemtomonitortheinfectiouspatientscanreducethenumberofhealthcareprofessionalsandensuretimelyresponseforemergency.Meanwhile,integratedbusinesssystemsandservices（IBSS）announcedasuccesspilotstudyforusingRFIDtechnologytolocateassetsandpersonnelatalargehealthcarefacilityinChicago（O’Connor2005）.EmoryHealthcaresuccessfullydeployed2.45GHzactiveRFIDdevicestotrackinfusionpumpsandotherhigh-valueequipmenttoimproveassetmanagementandutilization（O’Connor2007）.Notethatthelasttwohealthcareapplicationsdonotemploylocalizationalgorithms,instead,theyestimatetheobjectlocationbasedonthedetectionfromanearbysensor.Theaccuracyoflocationcanbeimprovedbyintegratinglocalizationalgorithms.

（2）Applicationinconstructionmaterialmanagement

Trackingthelocationofconstructionresourcesenableseffortlessprogressmonitoringandsupportsreal-timesensingofconstructionstatus.JaselskisandElMisalami（2003）developedaprototypeRFIDtrackingsystemforimprovingthematerialprocurementprocessonaconstructionsite.Furthermore,Songetal.（2007）developedamethodtolocatematerialsonconstructionsites.ThemethodrequiresaeldsupervisorbeequippedwithanRFIDreaderandaGPSreceiver.TheGPSreceiverprovidestheabsolutepositioninformationofthesupervisor,whilethepositionofthematerialrelativetothesupervisorcanbedeterminedfromthemultiplecommunicationsbetweenthereaderandthetagattachedtothematerials.

The bus is automatically stops the background and significance  

The people of car out for provides convenient service, while the bus stops 

directly affect the quality of the service. Traditional stops by the crew artificially, and in this way because of its poor and working intensity effect is too great, in many big cities have been eliminated. In recent years, with the development of science and 

technology progress and microcomputer technology in many fields has been widely 

used. In the acoustic field, with various pronunciation chip microcomputer technology,can complete combined speech synthesis technology, makes the car stops controller

 is realized for citizens becomes possible, and thus provide a more personalized 

service. In view of the traditional bus stops system deficiency, combined with the use of public transport vehicle characteristics and practical operating environment, the

design of a single-chip microcomputer control bus stops system automatically.The bus stops the design of automatic device is mainly to compensate for changing the 

traditional voice stops device must have driver control can work backward way, pitted,automatic station broadcasts six-foot-tall service term for the public and provide more humanized more perfect service.

 The characteristics of the system and advantage  This system greatly improve the accuracy of bus stops, and reliability. 

Improving the service quality of the bus system. Promote the city economic development and harmonious development of traffic changes. Made up for changing the

 traditional voice stops device must have driver control can work means, in the bus stops behind when the station broadcasts, automatic six-foot-tall service term for the 

public and provide more humanized more perfect service.

Thepresentstatusofintelligentcitybusstops

IntheprocessofinformationizationinChina,acity'spublictransportationindustrybecomesthemeasuringlevelandareferencepointofurbancivilizationforinformationizationasanimportantwindow.Thedevelopinglevelofpublictransportationnotonlyrepresentstheimageofacity,butalsorelateswitheveryoneinthecity.TheBroadcastingSystemforBuswellembodiesservicesandcarenessforpassengers.

Atpresent,theBroadcastingSysteminstalledonthebusisstilloperatedmanuallywithpush-button,whichmayhavepotentialsafetyhazard.Inordertocontrolthespeedofeachbus,PublicTransportCompanyhastosendaworkertorecordthetimewhenthebusesinthesamelinearriveatthestation.Thetelevisioninstalledoneachbustransmitsthesameprogrammeallday,whichhardlysatisf