《城市軌道交通列車網(wǎng)絡控制及應用》課件 4-1-5.WTB初運行

WTB初運行城軌列車網(wǎng)絡控制一、初運行的必要性01“初運行”是列車正常運行前的第一需要02列車組態(tài)發(fā)生變化時必須進行“初運行”“初運行”重新生成新的強主設備，并對所有節(jié)點重新命名0304“初運行”是否完成是火車司機和檢修工作者必須要掌握的硬功夫一、初運行的必要性絞線式列車總線WTB01(主設備)02030506636204底部頂部12112121221122降序升序節(jié)點位置尋址方案WTB初運行之——節(jié)點地址分配每個節(jié)點主設備方向唯一地址特征周期節(jié)點描述符ApplicationVehicleNumberingoriginalprincipaldirectionoftravelfrontrear0102030405060605040302016263010203nonode04050607TCN(nodes)UICforwardsUICbackwards該應用程序可以使用不同的地址進行操作，例如車輛地址尤其是如果每輛車有一個以上的節(jié)點或沒有節(jié)點的車輛。應用程序從節(jié)點地址推導出其自己的地址。翻譯由映射模塊完成。ApplicationVehicleNumberingoriginalprincipaldirectionoftravelfrontrear0102030405060605040302016263010203nonode04050607TCN(nodes)UICforwardsUICbackwardsTheapplicationmayoperatewithdifferentaddresses,e.g.vehicleaddresses,especiallyifthereismorethanonenodepervehicleorvehicleswithnonode.Theapplicationdeducesitsownaddressesfromthenodeaddresses.ThetranslationisdonebyamappingmoduleWTB初運行之——拓撲結(jié)構(gòu)節(jié)點連接電纜節(jié)形成一個兩端帶端接器的單段+-中間節(jié)點（多個）端節(jié)點主干電纜跳線電纜+-解碼器編碼器+-+-編碼器解碼器端接器+-+-編碼器解碼器+-端節(jié)點+-解碼器端接器編碼器信道2信道1信道1信道2WTB總線拓撲WTBSTRUCTURE+-intermediatenode(s)endnodetrunkcablejumpercable+-buscontrollers+-+-buscontrollersterminators(inserted)2channels+-+-buscontrollers+-endnode+-buscontrollersterminators(inserted)2channels1channelactive1channelactivedistancemedium860m(22UICvehicles)andsupportsupto32nodes.shielded,twistedwirepairat1Mbit/swithManchesterIIencodingcontrollinkprotocolonemaster(anynodemaybecomeback-upmaster)standardHDLC(IEC3309)controllers.電清除電路：“WTB”之——電纜安裝避免連接器觸點氧化，選用電清除電路總線上附加一個大的脈沖直流電流手插式電纜WTB初運行之——實現(xiàn)介質(zhì)附掛單元（MAU）的開關(guān)顯示terminatorswitchesDirection1Direction2busswitchRt1Kt1Rt2Kt2directionswitchmainchannelauxiliarychannelnodecommandsnodereportdatasend/receiveWTB初運行之——所有節(jié)點被命名典型的已命名的組成所有總線均被命名，節(jié)點01是主設備。主設備作為端節(jié)點被畫出，它也可以是一個中間節(jié)點。EndNodesAndIntermediateNodesintermediatenodeendnodeendnodeintermediatenodeDetectRequestDetectRequestregularbustrafficdetectionoperationidleoperationoperationdetectionAnodemaybeENDetectionchannelsareactiveoneachendnodetofindadditionalnodes.endnodeonechanneloperating,theotherdetectingINintermediatenodeonechanneloperating,theotheridleDetectionchannelsareactiveoneachendnodetofindadditionalnodes.第一步：未知節(jié)點的檢測WTB初運行之——狀態(tài)與檢測01057F01057FAnunnamednoderespondsto"Detect_Request"witha"Detect_Response"Endnode03reportsacompositionchangetothemasternexttimeitispolled.Anunnamednodedoesnotsend"Detect_Request"frames.ThemasterpollsanendnodewithaPresence_Requesteveryotherbasicperiod.Detect_RequestDetect_RequestDetect_ResponsePresence_RequestPresence_ResponseBusLengthening010203unnamed(7F)第二步：設置中間節(jié)點WTB初運行之——設置中間節(jié)點WTB初運行之——設置中間節(jié)點InformedconsentStep01采集血樣標本做血型鑒定及交叉配血試驗Step0205以置中間設定響應幀響應總線主01給端節(jié)點05發(fā)送置中間設定請求幀Step03MAU部件將其設置為中間設定狀態(tài)Thenewnode04respondsbyaNaming_ResponsewithitsNode_Descriptor.Themasterthengivesaddress04totheunnamednodebyaNaming_Request.Thenewnode04startssendingDetect_Requeststofindfurthernodes.IncludingAnUnnamedNodeThemastersendsa"SetInt_Request"toswitchnode03tointermediate.Detect_Request01020304Naming"04"Detect_Requestterm.removedshutdownSetIntermediate"03"第三步：新節(jié)點命名WTB初運行之——新節(jié)點命名InformedconsentStep01采集血樣標本做血型鑒定及交叉配血試驗Step02總線主發(fā)送一個命名請求幀給新節(jié)點指定其地址為06總線主可以直接訪問未命名節(jié)點Step03新節(jié)點以命名響應幀來響應WTB初運行之——新節(jié)點命名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