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轨道交通信号系统术语及缩写TermorAcronym/术语或缩写Description/说明A/DAnaloguetoDigital数/模转换ABServicebrakerateasafunctionofacommandedbrakingprofile.做为指令制动包络函数的运营制动率ACBAxleCounterBlock计轴区块ACCAsynchronousCommunicationsController异步通信控制器Accident/事故Anyunforeseeneventoroccurrenceresultingininjuryorpropertydamage.任何不可预知的造成伤害或财产损失的事件ACEAxleCounterEvaluator计轴评估ACRAreaofControlRegion(alsoseeAOA).控制区地带（参见AOA）ActiveState/主用状态OneoffourstatesinwhichaVOBCcanexist.ThestateinwhichaVOBCcancontrolandmonitoracommunicatingtrain’smotion.OnacommunicatingtrainoneandonlyoneVOBCcanexistintheActiveStateatanygiventime.VOBC可存在的四种状态之一。在此状态下VOBC能控制和监视一辆通信列车的运动。在一辆通信列车上有且仅有一个VOBC可在任何给定时间处于主用状态AGSSAutomaticGlobalScheduleSlide全系统自动时刻调整Alignment/平面图Theentirephysicalguidewaycomprisingrunningrails,switches,powerrails,inductiveloopsandassociatedcommunicationandstationplatformequipment.全部的轨道设备，包括运行轨道、道岔、导电轨道、感应环和相关的通信以及车站站台设备。ANSIAmericanNationalStandardsInstitute.美国国家标准化局ANTFILAntennaFilter天线滤波器Anti-ValentTwoinputoroutputbitshavingoppositelogiclevels,e.g.,logicvalues1and0.2个输入和输出比特具有相反的逻辑电平、例如1和0AOAAreaofAuthority(alsoseeACR)管辖区域（参见ACR）APLApprovedPartsList批准的部件表ARTAdvancedRapidTransit先进高速交通ASCAutomaticSpeedControl自动速度控制ASCIIAmericanStandardCodeforInformationInterchange美国信息交换标准码ASMAssembler汇编器AspectTheappearanceofasignalconveyinganindicationasreceivedfromthedirectionofanapproachingtrain.一个信号机状态显示，信号机从接近列车方向传送的标准的指示。ATAALCATELTRANSPORTAUTOMATION阿尔卡特交通自动化ATCAutomaticTrainControl车辆自动控制ATCBoundaryThetransitionbetweenATCandNonATCterritory.ATC控制区域和非ATC控制区域的交界ATCTerritoryTheareaofguidewayequippedwiththeATCsystemtheboundariesofwhicharedelineatedbyEntryLooplocations.装备了ATC系统的轨道。ATOAutomaticTrainOperation列车自动运营ATPAutomaticTrainProtection列车自动防护ATRAutomaticTrainRegulation自动列车调整ATSAutomaticTrainSupervision列车自动监督AutomaticGlobalScheduleSlide/全系统自动时刻调整Avaluecalculatedbasedontheschedulevarianceofthelatesttrain,appliedtoalltrains.以最晚列车的时刻偏差为基准计算出的一个列车时刻调整数值。AutomaticModeTrain/自动模式列车AtrainoperatingwithintheATCboundaryunderthecontroloftheActiveVOBCandinaccordancewithVCCcommandinput.一辆运行在ATC边界以内，在VOBC和VCC控制之下的列车AutomaticSpeedControl自动速度控制AseriesofalgorithmsusedbytheVOBCtoperformtrainspeedcontrol.VOBC用来控制列车速度的一系列算法AutomaticTrainControl自动列车控制Thesystemforautomaticallycontrollingtrainmovement,enforcingtrainsafetyanddirectingtrainoperations.ATCincludesthefunctionsforautomatictrainoperation(ATO),automatictrainprotection(ATP)andautomatictrainsupervision(ATS).用来自动控制列车运行，保证列车安全和运营的系统。自动车辆控制系统包括保证列车运行的所有功能，自动列车运营、自动列车保护和自动列车监控AutomaticTrainOperation自动列车运营Performsanyorallofthefunctionsofspeedregulation,programmedstopping,dooranddwelltimecontrolandotherfunctionsnormallyassignedtothetrainoperator.执行下列任何或所有功能：速度控制、停车、开门和进站等所有通常由列车运营人员执行的职责AutomaticTrainProtection自动列车防护系统AseriesofvitalfunctionsperformedbytheATCsystemtoensurethatcommunicatingandnoncommunicatingtrainsoperatingwithinanATCterritorywillnotinfringeonanothertrain'ssafetydistance,violatemaximumspeed/targetpointcriteria,etc由ATC系统执行的一系列重大功能，以保证所有在ATC控制范围以内的列车不超过安全距离，超过最高速度和越过停车点Availability可靠性Theprobabilitythatagivensystemisoperationalorreadytobeplacedinoperation..一个给定系统可以操作和使用的概率AW0Theweightofanemptyvehicle.一辆空载车的重量AW1AW0+weightofseatedpassengers.空载车重量+全部坐席乘客重量AW2AW1+weightofstandees@4/m2.上面的AW1+站立乘客重量（每平米4人）AW3AW1+weightofstandees@6/m2.上面的AW1+站立乘客重量（每平米6人）AW4AW1+weightofstandees@8/m2.上面的AW1+站立乘客重量（每平米8人）AWGAmericanWireGauge/美国线径标准BASBuildingAutomationSystem楼宇自动化系统BCDBinaryCodedDecimal二进制双极性编码BCNBrakingCurveNumber刹车曲线代码BitsPerSecond/比特/秒Ameasurementusedtocharacterizethedatathroughputofaserialcommunicationchannelordevice.每秒种通过一个串行通道或设备的比特数目。BorderCrossingVCC边界ThelocationonaguidewaywheretrainscrossbetweenVCCcontrolareas.轨道上列车转换控制VCC的地方BrakingCurveNumber刹车曲线代码Thenumberusedtodefinetherateatwhichatraindeceleratesrelativetotheguideway.ThesevaluesaresupervisedbytheVOBCandrepresentthedv/dtrateofthetrain.用来确定列车减速特性的曲线的代码。这些代码由VOBC管理，代表列车的减速度Buffer缓存Thememoryareainacomputerorperipheraldeviceusedforthetemporarystorageofinformation.电脑或外设中的存储区域，用来做信息的临时存储BX110Positive110VACSinglePhase正极性110V单相交流CARDSeeLineReplaceableUnit参见线路可替换单元CASEComputerAidedSoftwareEngineering电脑辅助软件设计CAZConflictAvoidanceZone冲突保护区CCCentralComputer中心电脑CCOCentralControlOperator中央控制操作员CDBCableDistributionBox分线合CDRLContractDataRequirementsList合同数据需求单CESBCentralEmergencyStopButton中央紧急停车按纽CFIDCentralFeed-InDevice中央馈入设备Checked-redundancy冗余检查Avitalsystemdesignprinciplethatmaybeappliedtoeitherhardwareorsoftware.Ineachcase,thevitalfunctionisperformedbytwoormoreindependentsubsystems,eachofwhichisindependentlycapableofenforcingasafereactionaswellasperiodicallycheckingtheothersubsystem(s).Thechecksnormallyincludeverificationthatchecksareperformedandthattheintervalbetweenchecksisshortenoughtoreduce,toanacceptablelevel,hazardscausedbymultiplefailures.一种可以用在任何系统硬件和软件的设计原则。在任何时候事管生命的功能都由2个或2个以上独立的子系统参与，每个子系统单独都能够保证系统的安全，同时互相校验。CivilSpeed线路最大速度Themaximumvelocityatwhichatraincansafelytravel(permanentspeedlimit)overagivensectionofguideway.ACivilSpeedisdesignatedforeachsectionofanautomatedguideway.一辆列车可以在一