鐵道信號自動控制專業教學資源庫TeachingResourceDatabasefortheSpecialtyofAutomaticControlforRailwaySignal列車運行控制系統維護MaintenanceofTrainOperationControlSystem柳州鐵道職業技術學院LiuzhouRailwayVocationalTechnicalCollege部分圖片來源于網絡SomepicturescomefromtheInternet.疊加電碼化設計原則DesignPrincipleofOverlappingCoding一、疊加電碼化設計原則I.DesignPrincipleofOverlappingCoding疊加式電碼化的提出Proposalofoverlappingcoding占用疊加發碼Occupancyoverlappingcoding設計原則Designprinciple要使機車信號穩定工作，則機車信號接收中斷時間應小于機車信號制式允許的最大時間。這就提出了疊加式電碼化電路。疊加發碼通過電氣隔離設備將軌道電路與電碼化并接在一起，使軌道信息的發送、接收和電碼化信息的發送，同時接向鋼軌，將完成發碼所需的時間降低到最小。Tomakethelocomotivesignalworkstably,thereceivinginterruptiontimeofthelocomotivesignalshallbelessthanthemaximumtimeallowedbythelocomotivesignalsystem.Therefore,anoverlappingcodedcircuitwasproposed.Overlappingcodingconnectsthetrackcircuitandcodinginparallelthroughelectricalisolationequipment,sothatthesendingandreceptionoftrackinformationandthesendingofcodinginformationareconnectedtotherailatthesametime,thusminimizingthetimerequiredforcompletingcoding.DesignPrincipleofOverlappingCoding疊加式電碼化的提出Proposalofoverlappingcoding占用疊加發碼Occupancyoverlappingcoding設計原則Designprinciple疊加發碼又分為“占用疊加發碼”和“預先疊加發碼”兩種。剛占用本軌道區段便開始疊加發碼稱為“占用疊加發碼”；剛占用本區段則下一個區段便開始提前疊加發碼稱為“預先疊加發碼”。Overlappingcodingisdividedinto"occupancyoverlappingcoding"and"pre-overlappingcoding".Overlappingcodingimmediatelyafteroccupyingthetracksectioniscalled"occupancyoverlappingcoding";pre-overlappingcodingfromthenextsectionimmediatelyafteroccupyingthissectioniscalled"pre-overlappingcoding".“占用疊加發碼”方式允許的最大接收中斷時間0.2～0.4s，小于0.6s電碼化脈動斷開時間，不影響機車信號正常工作，只影響機車信號的應變時間。但當列車速度進一步提高時，短區段連續存在時，仍會影響機車信號的正常工作。Themaximumreceivinginterruptiontimeallowedbythe"occupancyoverlappingcoding"modeis0.2~0.4s,whichislessthanthecodingpulsedisconnectiontimeof0.6s.Itdoesnotaffectthenormalworkofthelocomotivesignalbutonlyaffectstheresponsetimeofthelocomotivesignal.However,whenthetrainspeedisfurtherincreasedandshortsectionscontinuetoexist,thenormaloperationofthelocomotivesignalwillstillbeaffected.DesignPrincipleofOverlappingCoding疊加式電碼化的提出Proposalofoverlappingcoding占用疊加發碼Occupancyoverlappingcoding設計原則Designprinciple電路設計必須滿足鐵路信號“故障—安全”的原則。室內故障或室外電纜一處混線時，不應發送晉級顯示的信息和向其他區段發碼。Thecircuitdesignmustmeettheprincipleof"failure-safety"forrailwaysignaling.Incaseofindoorfailureormixedoutdoorcables,itisnotallowedtosendtheinformationdisplayingpromotionandsendcodestoothersections.在最不利條件下，入口電流應滿足機車信號的工作需要。Underthemostunfavorableconditions,theinletcurrentshallmeettheworkingneedsofthelocomotivesignal.電碼化不應降低原有軌道電路的基本技術性能。Codingshallnotdegradethebasictechnicalperformanceoftheoriginaltrackcircuit.列車冒進信號時，其占用的所有咽喉區段不應發碼；列車冒進樞紐的絕對信號機時，至少其內方第一區段不發碼。Whenthetrainoverrunsthesignal,allthroatsectionsoccupiedbyitshallnotsendcodes;whenthetrainoverrunstheabsolutesignaloftheterminal,atleastthefirstsectioninsideitshallnotsendcodes.已發碼的區段，當區段空閑后，軌道電路應能自動恢復到調整狀態。Forthecodedsection,whenthesectionisunoccupied,thetrackcircuitshallbeabletoautomaticallyrestoretotheadjustmentstate.DesignPrincipleofOverlappingCoding疊加式電碼化的提出Proposalofoverlappingcoding占用疊加發碼Occupancyoverlappingcoding設計原則Designprinciple列車進行摘掛作業時，不應終止發碼。Codingshallnotbeterminatedduringthecouplinganddecouplingofthetrain.有效電碼中斷的最長時間，應不大于機車信號允許中斷的最短時間。Themaximuminterruptiontimeofvalidcodeshallnotbegreaterthantheminimuminterruptiontimeallowedbythelocomotivesignal.電碼化應提供能滿足機車信號穩定工作的條件，提速區段應采用預疊加電碼化。Codingshallprovideconditionsthatcanmeetthestableworkofthelocomotivesignal,andpre-overlappingcodingshallbeadoptedforspeed-upsections.當主設備故障時，副設備自動投入使用。Whenthemainequipmentfails,theauxiliaryequipmentwillautomaticallybeputintouse.股道的發碼設備專用時設單套，共用時設雙套。正線接、發車進路的發碼設備設雙套。Asetofcodingequipmentshallbeprovidedforadedicatedtrackandtwosetsofcodingequipmentshallbeprovidedforsharedtracks.Twosetsofcodingequipmentshallbeprovidedforthemaintrackreceivinganddepartureroutes.電碼化發碼設備應加裝監測裝置。Thecodingequipmentshallbeequippedwithamonitoringdevice.DesignPrincipleofOverlappingCoding疊加式電碼化的提出Proposalofoverlappingcoding占用疊加發碼Occupancyoverlappingcoding設計原則Designprinciple電碼化發碼設備應加裝防雷。Thecodingequipmentshallbeequippedwithalightningprotectiondevice.電碼化不應損壞軌道電路設備。Codingshallnotdamagetrackcircuitequipment.電碼化信息傳輸應與軌道電路信息傳輸合用電纜芯線。Codinginformationtransmissionshallsharethecablecorewithtrackcircuitinformationtransmission.機車信號機的顯示應符合《中華人民共和國鐵路技術管理規程》的規定，特殊情況報請有關部門批準后執行。ThedisplayofthelocomotivesignalshallcomplywiththeprovisionsoftheRegulationsofRailwayTechnicalOperationofthePeople'sRepublicofChina,andspecialcircumstancesshallbereportedtorelevantdepartmentsforapprovalbeforeimplementation.DesignPrincipleofOverlappingCoding補償電容的計算、疊加方式站內軌道電路電碼化類型CalculationofCompensationCapacitorandCodingTypesofIn-stationTrackCircuitinVariousOverlappingModes一、補償電容設置I.SettingofCompensationCapacitor補償電容設置Settingofcompensationcapacitor設置方法

等間距Δ=L/∑Settingmethod:equalspacingΔ=L/∑Δ為等間距，L為軌道電路長度，∑為電容數量Δistheequalspacing,Listhetrackcircuitlengthand∑isthenumberofcapacitors電容數量Σ=N+A，N：百米位數，A：個位、拾位數為0時為0個位、拾位數不為0時為1。NumberofcapacitorsΣ=N+A,N:hundred-meterdigit;A:0whentheunitsandtensdigitsare0;1whentheunitsandtensdigitsarenot0.序號S/N電容容量Capacitorcapacity載頻Frequency載頻Frequency180μF1700Hz2000Hz260μF2300Hz2600HzCalculationofCompensationCapacitorandCodingTypesofIn-stationTrackCircuitinVariousOverlappingModes舉例：Example:假如軌道電路長度為L=900mIfthetrackcircuitlengthisL=900mN=9A=0Σ=9+0=9，N=9A=0Σ=9+0=9,等間距Δ=900/9=100m，半間距Δ/2=100/2=50mEqualspacingΔ=900/9=100m,halfspacingΔ/2=100/2=50mC1C2C3C4C5C6C8C950m100m100m100m100m100m100m100m補償電容安裝圖InstallationDiagramofCompensationCapacitor50m100mC7機誡絕緣節MechanicalinsulationjointCalculationofCompensationCapacitorandCodingTypesofIn-stationTrackCircuitinVariousOverlappingModes1、車站軌道電路電碼化類型1.CodingTypeofStationTrackCircuit非電化牽引區段交流連續式軌道電路（480軌道電路）及25Hz相敏軌道電路疊加ZPW－2000系列電碼化電路。ACcontinuoustrackcircuit(480trackcircuit)and25Hzphase-sensitivetrackcircuit(PSTC)innon-electrifiedtractionsections+ZPW-2000seriescodedcircuits.電化牽引區段25Hz相敏軌道電路疊加ZPW－2000電碼化電路。它們各有二線制和四線制電碼化電路。The25HzPSTCinnon-electrifiedtractionsections+ZPW-2000codedcircuit.Theyhavetwo-wireandfour-wirecodedcircuitsrespectively.二線制電碼化電路指電碼化電路利用原軌道電路的送電端或受電端的兩根電纜芯線送往鋼軌。Thetwo-wirecodedcircuitmeansthatthecodedcircuitusestwocablecoresatthefeedendorreceivingendoftheoriginaltrackcircuittosendpowertotherail.四線制電碼化電路指電碼化電路另外增加兩根電纜芯線送往鋼軌。Thefour-wirecodedcircuitmeansthattwoadditionalcablecoresareaddedtothecodingcircuitforsendingpowertotherail.CalculationofCompensationCapacitorandCodingTypesofIn-stationTrackCircuitinVariousOverlappingModes二線制電化區段25Hz相敏軌道電路+ZPW-2000電碼化25HzPSTCintwo-wireelectrifiedsections+ZPW-2000coding四線制非電化區段480軌道電路疊加ZPW-2000電碼化480trackcircuitinfour-wirenon-electrifiedsections+ZPW-2000coding四線制非電化區段25Hz相敏軌道電路疊加ZPW-2000電碼化25HzPSTCinfour-wirenon-electrifiedsections+ZPW-2000coding二線制非電化區段25Hz相敏軌道電路+ZPW-2000電碼化25HzPSTCintwo-wirenon-electrifiedsection+ZPW-2000coding二線制非電化區段480軌道電路疊加ZPW-2000電碼化480trackcircuitintwo-wirenon-electrifiedsections+ZPW-2000coding四線制電化區段25Hz相敏軌道電路疊加ZPW-2000電碼化25HzPSTCinfour-wireelectrifiedsections+ZPW-2000codingCalculationofCompensationCapacitorandCodingTypesofIn-stationTrackCircuitinVariousOverlappingModes2.舉例2.ExampleCalculationofCompensationCapacitorandCodingTypesofIn-stationTrackCircuitinVariousOverlappingModes2.舉例2.ExampleCalculationofCompensationCapacitorandCodingTypesofIn-stationTrackCircuitinVariousOverlappingModes2.舉例2.ExampleCalculationofCompensationCapacitorandCodingTypesofIn-stationTrackCircuitinVariousOverlappingModes二線制疊加方式站內電碼化載頻頻率的排列ArrangementofIn-stationCodingFrequencyinTwo-wireOverlappingMode1、載頻頻譜的排列1.ArrangementofFrequencySpectrum

①下行正線，咽喉區正向接車、發車進路的載頻為1700-2。為防止進、出站處鋼軌絕緣破損，-1、-2載頻可與區間ZPW-2000軌道電路-1、-2載頻交錯。正線股道的載頻為1700-2。①Thefrequencyofforwardreceivinganddepartureroutesinthedownthroatareaofthemaintrackis1700-2.Topreventrailinsulationdamageattheentranceandexit,frequencies-1and-2canbestaggeredwithfrequencies-1and-2ofthesectionZPW-2000trackcircuit.Thefrequencyofthemaintrackis1700-2.

②上行正線，咽喉區正向接車、發車進路的載頻為2000-2。為防止進、出站處鋼軌絕緣破損，-1、-2載頻可與區間ZPW-2000軌道電路-1、-2載頻交錯。正線股道的載頻為2000-2。②Thefrequencyofforwardreceivinganddepartureroutesintheupthroatareaofthemaintrackis2000-2.Topreventrailinsulationdamageattheentranceandexit,frequencies-1and-2canbestaggeredwithfrequencies-1and-2ofthesectionZPW-2000trackcircuit.Thefrequencyofthemaintrackis2000-2.

③側線股道③Sidingtrack下行正方向，各股道按下行方向載頻2300-1Hz、1700-1Hz交錯排列。Forthedownpositivedirection,eachtrackisstaggeredaccordingtothefrequenciesof2300-1Hzand1700-1Hzinthedowndirection.上行正方向，各股道按上行方向載頻2600-1Hz、2000-1Hz交錯排列。Fortheuppositivedirection,eachtrackisstaggeredaccordingtothefrequenciesof2600-1Hzand2000-1Hzintheupdirection.到發線股道以1700-1Hz/2000-1Hz或2300-1Hz/2600-1Hz選擇載頻配置。1700-1Hz/2000-1Hzor2300-1Hz/2600-1Hzisselectedasthefrequencyofthereceiving-departuretrack.ArrangementofIn-stationCodingFrequencyinTwo-wireOverlappingMode2.站內電碼化載頻頻率的布置2.ArrangementofIn-stationCodingFrequency站內正線接發車進路采用2系載頻，側線股道采用1系載頻間隔布置。Thereceivinganddepartureroutesofthemaintrackinthestationarearrangedwithsecondaryfrequency,andthesidingtrackisarrangedatintervalswithprimaryfrequency.A.正線A.Maintrack下行正線正向接、發車進路和股道的載頻為1700-2.Thefrequencyofforwardreceivinganddepartureroutesandtracksonthedownmaintrackis1700-2.上行正線正向接、發車進路和股道的載頻為2000-2.Thefrequencyofforwardreceivinganddepartureroutesandtracksontheupmaintrackis2000-2.正線正向接、發車進路和股道載頻可根據需要選擇另一線路為-2載頻。Forthefrequencyoftheforwardreceivinganddepartureroutesandtracksofthemaintrack,anotherlinecanbeselectedas-2frequencyaccordingtoneeds.為防止進出站處鋼軌絕緣破損，站內-1，-2載頻應與區間ZPW-2000軌道電路-1，-2載頻交錯。Topreventrailinsulationdamageattheentranceandexit,frequencies-1and-2inthestationshallbestaggeredwithfrequencies-1and-2ofthesectionZPW-2000trackcircuit.ArrangementofIn-stationCodingFrequencyinTwo-wireOverlappingModeB.側線股道B.Sidingtrack各股道兩端，下行方向載頻按2300-1、1700-1交錯排列，上行方向載頻按2600-1、2000-1交錯排列。Atbothendsofeachtrack,thefrequencies2300-1and1700-1arestaggeredinthedowndirectionandthefrequencies2600-1and2000-1arestaggeredintheupdirection.相鄰側線股道，以1700-1、2000-1與2300-1/2600-1載頻交錯配置。Foradjacentsidingtracks,thefrequencies1700-1and2000-1andthefrequency2300-1/2600-1arestaggered.ArrangementofIn-stationCodingFrequencyinTwo-wireOverlappingModeArrangementofIn-stationCodingFrequencyinTwo-wireOverlappingMode正線正方向接車進路預疊加電碼化電路Pre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute繼電器電路Relaycircuit電碼化電路舉例Exampleofcodedcircuit發碼電路Codingcircuit1、JMJ電路1.JMJcircuit2、CJ電路2.CJcircuit3、FMJ電路3.FMJcircuit1、信息編碼1.Informationcoding2、編碼電路2.Codingcircuit1、正線正方向接車進路加電碼化電路1.CodedCircuitofMainTrackPositiveDirectionReceivingRoute2、正線反方向接車進路電碼化電路2.CodedCircuitofMainTrackNegativeDirectionReceivingRoute3、發車進路電碼化電路3.CodedCircuitofDepartureRoute4、到發線股道電碼化電路4.CodedCircuitofReceiving-departureTrackPre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute1、繼電器控制電路1.RelayControlCircuit繼電器接點RelaycontactPre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute1、繼電器控制電路1.RelayControlCircuitZXJLXJGJ1LQJ幾個常用繼電器Severalcommonrelays---正線繼電器；---Maintrackrelay;---列車信號繼電器；---Trainsignalrelay;---股道區段軌道繼電器；---Trackrelayintracksection;---離去區段軌道繼電器。---Trackrelayindeparturesection.Pre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute1、繼電器控制電路1.RelayControlCircuit每一個接車方向設一個JMJ。JMJ↑說明建立的是正線接車進路。SetaJMJforeachreceivingdirection.JMJ↑indicatesthatthemaintrackreceivingrouteisestablished.（1）JMJ接車發碼繼電器電路(1)JMJreceivingcodingrelaycircuit1AG5DG9-15DGⅠG17-23DG3JGXXⅠ163DGPre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute1、繼電器控制電路1.RelayControlCircuit每一軌道區段設一個CJ

。用于控制發送器向軌道區段發送移頻信號的時機。SetaCJforeachtracksection.Itisusedtocontrolthetimingwhenthetransmittersendsthefrequencyshiftsignaltothetracksection.（2）CJ傳輸繼電器電路(2)CJtransmissionrelaycircuit1AG5DG9-15DGⅠG17-23DG3JGXXⅠ163DGPre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute1、繼電器控制電路1.RelayControlCircuit平時，XFMJ落下狀態Normally,XFMJisde-energized（3）FMJ繼電器電路(3)FMJrelaycircuitPre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute2、發碼電路2.CodingCircuit所謂編碼電路即電碼化移頻發送盒的低頻信息控制電路。低頻信息控制電路由進、出站信號電路有關繼電器接點構成。Theso-calledcodingcircuitisthelow-frequencyinformationcontrolcircuitofthecodedfrequencyshifttransmissionbox.Thelow-frequencyinformationcontrolcircuitconsistsofrelaycontactsofinboundandoutboundsignalcircuits.（1）信息編碼(1)Informationcoding出站信號機顯示StartingsignaldisplayLXJFZXJF2LQJF3LQJF發送信息碼Sendinformationcode紅Red↓HU綠（側向發車）Green(lateraldeparture)↑↓UU黃Yellow↑↑↓U綠黃Greenandyellow↑↑↑↓LU綠Green↑↑↑↑LPre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute2、發碼電路2.CodingCircuit（2）編碼電路(2)CodingcircuitPre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute（3）發碼電路(3)Codingcircuit1AG5DG9-15DGⅠG17-23DG3JGXXⅠ163DGPre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute3、電碼化電路舉例3.ExamplesofCodedCircuit1、正線正方向接車進路電碼化電路1.CodedCircuitofMainTrackPositiveDirectionReceivingRoute2、正線反方向接車進路電碼化電路2.CodedCircuitofMainTrackNegativeDirectionReceivingRoute3、正線正方向發車進路電碼化電路3.CodedCircuitofMainTrackPositiveDirectionDepartureRoute4、到發線股道電碼化電路4.CodedCircuitofReceiving-departureTrackPre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute以X→ⅠG道接車進路為例TakingX→IGtrackreceivingrouteasanexample→XLXJ↑XZXJ↑1GJF↑→XJMJ↑→XIJMJ↑排列進路，開放信號Routesettingandsignalclearing1、正線正方向接車進路電碼化電路1.CodedCircuitofMainTrackPositiveDirectionReceivingRoute1AG5DG9-15DGⅠG17-23DG3JGXXⅠ163DGPre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute列車進入3JGThetrainenters3JG3JGJ↓→1AGCJ↑（1-2）→

經XJMJ向1AG發碼3JGJ↓→1AGCJ↑(1-2)→sendcodeto1AGviaXJMJ列車進入1AGThetrainenters1AG1AG5DG9-15DGⅠG17-23DG3JGXXⅠ163DG1AGJ↓→1AGCJ↑（3-4）→經XJMJ向1AG發碼1AGJ↓→1AGCJ↑(3-4)→sendcodeto1AGviaXJMJ

→5DGCJ↑（1-2）→經XJMJ向5DG發碼→5DGCJ↑(1-2)→sendcodeto5DGviaXJMJ

→XLXJ↓1、正線正方向接車進路電碼化電路1.CodedCircuitofMainTrackPositiveDirectionReceivingRoutePre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute列車進入5DGThetrainenters5DG5DGJ↓→5DGCJ↑（3-4）→經XJMJ向5DG發碼5DGJ↓→5DGCJ↑(3-4)→sendcodeto5DGviaXJMJ

→3DGCJ↑（1-2）→經XJMJ向3DG發碼→3DGCJ↑(1-2)→sendcodeto3DGviaXJMJ→1AGCJ↓→1AG恢復原軌道電路→1AGCJ↓→1AGrestorestheoriginaltrackcircuit1AG5DG9-15DGⅠG17-23DG3JGXXⅠ163DG1、正線正方向接車進路電碼化電路1.CodedCircuitofMainTrackPositiveDirectionReceivingRoutePre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute列車進入3DGThetrainenters3DG3DGJ↓→3DGCJ↑（3-4）→經XJMJ向3DG發碼3DGJ↓

→3DGCJ↑(3-4)→sendcodeto3DGviaXJMJ

→9-15DGCJ↑（1-2）→經XJMJ向9-15DG發碼

→9-15DGCJ↑(1-2)

→sendcodeto9-15DGviaXJMJ

→5DGCJ↓→5DG恢復原軌道電路

→5DGCJ↓

→5DGrestorestheoriginaltrackcircuit1AG5DG9-15DGⅠG17-23DG3JGXXⅠ163DG1、正線正方向接車進路電碼化電路1.CodedCircuitofMainTrackPositiveDirectionReceivingRoutePre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute列車進入9-15DGThetrainenters9-15DG9-15DGJ↓→9-15DGCJ↑（3-4）→經XJMJ向9-15DG發碼9-15DGJ↓

→9-15DGCJ↑(3-4)→sendcodeto9-15DGviaXJMJ

→17-23DGCJ↑（1-2）→經XJMJ向17-23DG發碼

→17-23DGCJ↑(1-2)

→sendcodeto17-23DGviaXJMJ

→3DGCJ↓→3DG恢復原軌道電路

→3DGCJ↓

→3DGrestorestheoriginaltrackcircuit1AG5DG9-15DGⅠG17-23DG3JGXXⅠ163DG1、正線正方向接車進路電碼化電路1.CodedCircuitofMainTrackPositiveDirectionReceivingRoutePre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute列車進入17-23DGThetrainenters17-23DG17-23DGJ↓→17-23DGCJ↑（3-4）→經XJMJ向17-23DG發碼17-23DGJ↓

→17-23DGCJ↑(3-4)→sendcodeto17-23DGviaXJMJ

→IGCJ↑（1-2）→經IGCJ向IG發碼

→IGCJ↑(1-2)→sendcodetoIGviaIGCJ

→9-15DGCJ↓→9-15DG恢復原軌道電路

→9-15DGCJ↓→9-15DGrestorestheoriginaltrackcircuit1AG5DG9-15DGⅠG17-23DG3JGXXⅠ163DG1、正線正方向接車進路電碼化電路1.CodedCircuitofMainTrackPositiveDirectionReceivingRoutePre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute列車進入IGThetrainentersIGIGJ↓→IGCJ↑（3-4）→IGCJ向IG發碼IGJ↓→IGCJ↑(3-4)→sendcodetoIGviaIGCJ

→17-23DGCJ↓→17-23DG恢復原軌道電路→17-23DGCJ↓→17-23DGrestorestheoriginaltrackcircuit→XJMJ↓1AG5DG9-15DGⅠG17-23DG3JGXXⅠ163DG1、正線正方向接車進路電碼化電路1.CodedCircuitofMainTrackPositiveDirectionReceivingRoutePre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute正線反方向接車進路預疊加電碼化電路Pre-overlappingCodedCircuitofMainTrackNegativeDirectionReceivingRoute

1、正線反方向接車進路電碼化電路1.CodedCircuitofMainTrackNegativeDirectionReceivingRoute排列進路，開放信號Routesettingandsignalclearing→SFLXJ↑SFZXJ↑IGJF↑→SFJMJ↑→SIJMJ↑Pre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute列車駛入一離去區段ThetrainentersadeparturesectionX1LQJ↓→4DGCJ↑（3-4）→經SFJMJ向4DG發碼X1LQJ↓→4DGCJ↑(3-4)→sendcodeto4DGviaSFJMJ→SFLXJ↓1、正線反方向接車進路電碼化電路1.CodedCircuitofMainTrackNegativeDirectionReceivingRoutePre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute列車進入4DGThetrainenters4DG4DGJ↓→4DGCJ↑（1-2）→經SFJMJ向4DG發碼4DGJ↓→4DGCJ↑(1-2)→sendcodeto4DGviaSFJMJ

→8-10DGCJ↑（3-4）→經SFJMJ向8-10DG發碼→8-10DGCJ↑(3-4)→sendcodeto8-10DGviaSFJMJ列車駛入8-10DGThetrainenters8-10DG8-10DGJ↓→8-10DGCJ↑（1-2）→經SFJMJ向8-10DG發碼8-10DGJ↓→8-10DGCJ↑(1-2)→sendcodeto8-10DGviaSFJMJ

→16-18GCJ↑（3-4）→經SFJMJ向16-18DG發碼→16-18GCJ↑(3-4)→sendcodeto16-18DGviaSFJMJ→4DG恢復原軌道電路→4DGrestorestheoriginaltrackcircuit1、正線反方向接車進路電碼化電路1.CodedCircuitofMainTrackNegativeDirectionReceivingRoutePre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute列車進入16-18DGThetrainenters16-18DG16-18DGJ↓→16-18DGCJ↑（1-2）→經SFJMJ向16-18DG發碼16-18DGJ↓→16-18DGCJ↑(1-2)→sendcodeto16-18DGviaSFJMJ

→1GCJ↑（1-2）→經IDCJ向IG發碼→1GCJ↑(1-2)→sendcodetoIGviaIDCJ→8-10DG恢復原軌道電路→8-10DGrestorestheoriginaltrackcircuit列車駛入IGThetrainentersIGIGJ↓→IGCJ↑（3-4）→經IGCJ向IG發碼IGJ↓→IGCJ↑(3-4)→sendcodetoIGviaIGCJ→16-18DG恢復原軌道電路→16-18DGrestorestheoriginaltrackcircuit

→SFJMJ↓1、正線反方向接車進路電碼化電路1.CodedCircuitofMainTrackNegativeDirectionReceivingRoutePre-overlappingCodedCircuitofMainTrackPositiveDirectionReceivingRoute正線發車進路預疊加電碼化電路Pre-overlappingcodedcircuitofmaintrackdepartureroute以XI發車進路為例TakingXIdeparturerouteasanexampleXILXJ↑XIZXJ↑XILQJ↑→XIFMJ↑排列進路，開放信號Routesettingandsignalclearing1、正線正方向發車進路電碼化電路1.CodedCircuitofMainTrackPositiveDirectionDepartureRoutePre-overlappingCodedCircuitofMainTrackDepartureRouteIGJF↓→

16-18DGCJ↑（3-4），經XIFMJ向16-18DG發碼IGJF↓→16-18DGCJ↑(3-4),sendcodeto16-18DGviaXIFMJ列車在IGThetrainisinIG16-18DGJF↓→

16-18DGCJ↑（1-2），經XIFMJ向16-18DG發碼16-18DGJF↓→16-18DGCJ↑(1-2),sendcodeto16-18DGviaXIFMJ

→

8-10DGCJ↑（3-4），經

XIFMJ向8-10DG發碼→8-10DGCJ↑(3-4),sendcodeto8-10DGviaXIFMJ→IG恢復原軌道電路→IGrestorestheoriginaltrackcircuit→X1LXJ↓列車駛入16-18DGThetrainenters16-18DG1、正線正方向發車進路電碼化電路1.CodedCircuitofMainTrackPositiveDirectionDepartureRoutePre-overlappingCodedCircuitofMainTrackDepartureRoute8-10DGJF↓→

8-10DGCJ↑（1-2），經XIFMJ向8-10DG發碼8-10DGJF↓→8-10DGCJ↑(1-2),sendcodeto8-10DGviaXIFMJ

→4DGCJ↑（3-4），經XIFMJ向4DG發碼→4DGCJ↑(3-4),sendcodeto4DGviaXIFMJ

→

16-18DG恢復原軌道電路→16-18DGrestorestheoriginaltrackcircuit列車駛入8-10DGThetrainenters8-10DG1、正線正方向發車進路電碼化電路1.CodedCircuitofMainTrackPositiveDirectionDepartureRoutePre-overlappingCodedCircuitofMainTrackDepartureRoute4DGJF↓→

4DGCJ↑（1-2），經XIFMJ向4DG發碼4DGJF↓→4DGCJ↑(1-2),sendcodeto4DGviaXIFMJ

→

8-10DG恢復原軌道電路→8-10DGrestorestheoriginaltrackcircuit列車駛入4DGThetrainenters4DG1、正線正方向發車進路電碼化電路1.CodedCircuitofMainTrackPositiveDirectionDepartureRoutePre-overlappingCodedCircuitofMainTrackDepartureRoute機車信號載頻的鎖頻LockingofLocomotiveSignalFrequency一、機車信號載頻自動切換I.AutomaticSwitchingofLocomotiveSignalFrequency（一）機車信號載頻自動切換的作用(I)Functionofautomaticswitchingoflocomotivesignalfrequency機車信號載頻自動切換系統，解決了列車在上下行線間轉線運行時由人工進行切換所存在的手續煩瑣、切換地點不明確、切換時機難于掌握等問題。解決了機車信號載頻鄰線同載干擾的問題。Thelocomotivesignalfrequencyautomaticswitchingsystemsolvestheproblemssuchascomplicatedprocedures,unclearswitchinglocations,anddifficultytomastertheswitchingtimewhentrainsaremanuallyswitchedbetweenupanddowntracks,andtheproblemofsame-loadinterferencebetweenadjacenttracksintermsoflocomotivesignalfrequency.LockingofLocomotiveSignalFrequency（二）載頻頻譜配置(II)Configurationoffrequencyspectrum1、下行正線，咽喉區正向接車、發車進路的載頻為1700-2。1.Thefrequencyofforwardreceivinganddepartureroutesinthedownthroatareaofthemaintrackis1700-2.為防止進、出站處鋼軌絕緣破損，-1、-2載頻可與區間ZPW-2000軌道電路-1、-2載頻交錯。正線股道的載頻為1700-2。Topreventrailinsulationdamageattheentranceandexit,frequencies-1and-2canbestaggeredwithfrequencies-1and-2ofthesectionZPW-2000trackcircuit.Thefrequencyofthemaintrackis1700-2.2、上行正線，咽喉區正向接車、發車進路的載頻為2000-2。2.Thefrequencyofforwardreceivinganddepartureroutesintheupthroatareaofthemaintrackis2000-2.為防止進、出站處鋼軌絕緣破損，-1、-2載頻可與區間ZPW-2000軌道電路-1、-2載頻交錯。正線股道的載頻為2000-2。Topreventrailinsulationdamageattheentranceandexit,frequencies-1and-2canbestaggeredwithfrequencies-1and-2ofthesectionZPW-2000trackcircuit.Thefrequencyofthemaintrackis2000-2.3、側線股道3.Sidingtrack下行正方向，各股道按下行方向載頻2300-1Hz、1700-1Hz交錯排列。Forthedownpositivedirection,eachtrackisstaggeredaccordingtothefrequenciesof2300-1Hzand1700-1Hzinthedowndirection.上行正方向，各股道按上行方向載頻2600-1Hz、2000-1Hz交錯排列。Fortheuppositivedirection,eachtrackisstaggeredaccordingtothefrequenciesof2600-1Hzand2000-1Hzintheupdirection.一、機車信號載頻自動切換I.AutomaticSwitchingofLocomotiveSignalFrequencyLockingofLocomotiveSignalFrequency一、機車信號載頻自動切換I.AutomaticSwitchingofLocomotiveSignalFrequency（三）機車信號載頻的鎖頻(III)Lockingoflocomotivesignalfrequency當機車信號車載設備接收到ZP碼-25.7Hz載頻切換信息后，自動將接收載頻范圍鎖定在該載頻上，對其它載頻不予接收，直到再次接收到新的25.7Hz信息。Whenthelocomotivesignalon-boardequipmentreceivesZPcode-25.7Hzfrequencyswitchinginformation,itwillautomaticallylockthereceivingfrequencyrangeonthisfrequencyandwillnotreceiveotherfrequenciesuntilreceivinganew25.7Hzmessageagain.(1)站內正線股道的鎖頻(1)Frequencylockingofmaintrackinthestation(2)側線股道的鎖頻(2)Frequencylockingofsidingtrack(3)區間線路的鎖頻(3)FrequencylockingofsectionlineLockingofLocomotiveSignalFrequency一、機車信號載頻自動切換I.AutomaticSwitchingofLocomotiveSignalFrequency(1)站內正線股道的鎖頻(1)Frequencylockingofmaintrackinthestation對于直進直出的正線接、發車進路沒有站內股道鎖頻問題，不需發送切換載頻信息。Forstraight-inandstraight-outmaintrackreceivinganddepartureroutes,thereisnoproblemintrackfrequencylockinginthestation,soitisnotnecessarytosendfrequencyswitchinginformation.對于彎進直出進路往往是列車改變線路運行，存在載頻選頻鎖頻問題，采用2系載頻+25.7Hz的方法，即壓入后先發2S的25.7Hz信息。Forcurvedstraight-inandstraight-outroutes,thetrainoftenchangestheoperationline,whichhastheproblemoffrequencyselectionandfrequencylocking.Themethodofsecondaryfrequency+25.7Hzisadopted,thatis,2Sfrequency25.7Hzinformationissentfirstafterpressing.LockingofLocomotiveSignalFrequency一、機車信號載頻自動切換I.AutomaticSwitchingofLocomotiveSignalFrequency(2)側線股道的鎖頻(2)Frequencylockingofsidingtrack向側線股道接車為彎進進路，存在載頻選頻鎖頻問題，需要發送切換載頻信息，采用1系載頻