《城市轨道交通列车网络控制及应用》课件 4-1-5.WTB初运行

WTB初运行城轨列车网络控制一、初运行的必要性01“初运行”是列车正常运行前的第一需要02列车组态发生变化时必须进行“初运行”“初运行”重新生成新的强主设备，并对所有节点重新命名0304“初运行”是否完成是火车司机和检修工作者必须要掌握的硬功夫一、初运行的必要性绞线式列车总线WTB01(主设备)02030506636204底部顶部12112121221122降序升序节点位置寻址方案WTB初运行之——节点地址分配每个节点主设备方向唯一地址特征周期节点描述符ApplicationVehicleNumberingoriginalprincipaldirectionoftravelfrontrear0102030405060605040302016263010203nonode04050607TCN(nodes)UICforwardsUICbackwards该应用程序可以使用不同的地址进行操作，例如车辆地址尤其是如果每辆车有一个以上的节点或没有节点的车辆。应用程序从节点地址推导出其自己的地址。翻译由映射模块完成。ApplicationVehicleNumberingoriginalprincipaldirectionoftravelfrontrear0102030405060605040302016263010203nonode04050607TCN(nodes)UICforwardsUICbackwardsTheapplicationmayoperatewithdifferentaddresses,e.g.vehicleaddresses,especiallyifthereismorethanonenodepervehicleorvehicleswithnonode.Theapplicationdeducesitsownaddressesfromthenodeaddresses.ThetranslationisdonebyamappingmoduleWTB初运行之——拓扑结构节点连接电缆节形成一个两端带端接器的单段+-中间节点（多个）端节点主干电缆跳线电缆+-解码器编码器+-+-编码器解码器端接器+-+-编码器解码器+-端节点+-解码器端接器编码器信道2信道1信道1信道2WTB总线拓扑WTBSTRUCTURE+-intermediatenode(s)endnodetrunkcablejumpercable+-buscontrollers+-+-buscontrollersterminators(inserted)2channels+-+-buscontrollers+-endnode+-buscontrollersterminators(inserted)2channels1channelactive1channelactivedistancemedium860m(22UICvehicles)andsupportsupto32nodes.shielded,twistedwirepairat1Mbit/swithManchesterIIencodingcontrollinkprotocolonemaster(anynodemaybecomeback-upmaster)standardHDLC(IEC3309)controllers.电清除电路：“WTB”之——电缆安装避免连接器触点氧化，选用电清除电路总线上附加一个大的脉冲直流电流手插式电缆WTB初运行之——实现介质附挂单元（MAU）的开关显示terminatorswitchesDirection1Direction2busswitchRt1Kt1Rt2Kt2directionswitchmainchannelauxiliarychannelnodecommandsnodereportdatasend/receiveWTB初运行之——所有节点被命名典型的已命名的组成所有总线均被命名，节点01是主设备。主设备作为端节点被画出，它也可以是一个中间节点。EndNodesAndIntermediateNodesintermediatenodeendnodeendnodeintermediatenodeDetectRequestDetectRequestregularbustrafficdetectionoperationidleoperationoperationdetectionAnodemaybeENDetectionchannelsareactiveoneachendnodetofindadditionalnodes.endnodeonechanneloperating,theotherdetectingINintermediatenodeonechanneloperating,theotheridleDetectionchannelsareactiveoneachendnodetofindadditionalnodes.第一步：未知节点的检测WTB初运行之——状态与检测01057F01057FAnunnamednoderespondsto"Detect_Request"witha"Detect_Response"Endnode03reportsacompositionchangetothemasternexttimeitispolled.Anunnamednodedoesnotsend"Detect_Request"frames.ThemasterpollsanendnodewithaPresence_Requesteveryotherbasicperiod.Detect_RequestDetect_RequestDetect_ResponsePresence_RequestPresence_ResponseBusLengthening010203unnamed(7F)第二步：设置中间节点WTB初运行之——设置中间节点WTB初运行之——设置中间节点InformedconsentStep01采集血样标本做血型鉴定及交叉配血试验Step0205以置中间设定响应帧响应总线主01给端节点05发送置中间设定请求帧Step03MAU部件将其设置为中间设定状态Thenewnode04respondsbyaNaming_ResponsewithitsNode_Descriptor.Themasterthengivesaddress04totheunnamednodebyaNaming_Request.Thenewnode04startssendingDetect_Requeststofindfurthernodes.IncludingAnUnnamedNodeThemastersendsa"SetInt_Request"toswitchnode03tointermediate.Detect_Request01020304Naming"04"Detect_Requestterm.removedshutdownSetIntermediate"03"第三步：新节点命名WTB初运行之——新节点命名InformedconsentStep01采集血样标本做血型鉴定及交叉配血试验Step02总线主发送一个命名请求帧给新节点指定其地址为06总线主可以直接访问未命名节点Step03新节点以命名响应帧来响应WTB初运行之——新节点命名FirstTwoNodesAtpower-up,aweaknodewhichdetectsnobustrafficbecomesbusmaster.Ittakesaddress"01"andsends"Detect_Requests"tofindfurthernodes.detectingdetectingdetectingdetecting0101Detect_RequestDetect_RequestDetect_RequestDetect_RequestAnodewhichreceivesa"Detect_Request"telegramreplieswitha"Detect_Response"telegram,signallingthatitwouldacceptnaming.Thebusmastersendanamingtelegramtothatnodeandgivesittheaddress02.Thetwonodescannowoperateastrainbus.detectingdetecting0102Detect_RequestoperatingDetect_ReqDetect_RequestDetect_ResponseNode02detectsathirdnode,whichagreestobenamed(yields).MoreNodes0102Weare2Anyonehere?Weare2.Anyonehere?01I'malone.Anyonehere?Node02reportsthedetectionofanadditionalnodetothebusmaster01Node01switchesnode02totheintermediatenodesetting.Node01namesnode03Node02reportsthedetectionofanadditionalno