城市智能公交识别系统外文翻译.docx
- 文档编号:11157037
- 上传时间:2023-02-25
- 格式:DOCX
- 页数:10
- 大小:47.84KB
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》由会员分享,可在线阅读,更多相关《城市智能公交识别系统外文翻译.docx(10页珍藏版)》请在冰豆网上搜索。
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
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 城市 智能 公交 识别 系统 外文 翻译