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US-20260125089-A1 - CBTC SYSTEM BASED ON INTERVAL PROTECTION AND HETEROGENEOUS REDUNDANCY, AND IMPLEMENTATION METHOD THEREOF

US20260125089A1US 20260125089 A1US20260125089 A1US 20260125089A1US-20260125089-A1

Abstract

A CBTC system based on interval protection and heterogeneous redundancy, the system comprising a communication subsystem DCS, and an onboard ATP subsystem MVTP and a trackside ATP interval protection subsystem MWSP, both of which communicate with the communication subsystem DCS, wherein the onboard ATP subsystem MVTP receives movement authorization information from the trackside ATP interval protection subsystem MWSP, and when movement authorization information is unavailable, receives target distance or speed code information to protect train operation safety; and the trackside ATP interval protection subsystem MWSP automatically identifies and uses a corresponding block mode on the basis of information that is sent by the onboard ATP subsystem MVTP, uses the corresponding block mode to perform movement authorization and target distance or speed code calculation, and sends the calculation result to a corresponding train. Provided are an implementation method for a CBTC system and an electronic device and a computer-readable storage medium.

Inventors

  • XiaoYong Wang
  • Ye Xu
  • Yanqiong SUN

Assignees

  • CASCO SIGNAL LTD.

Dates

Publication Date
20260507
Application Date
20231117
Priority Date
20230725

Claims (16)

  1. 1 . A CBTC system based on interval protection and heterogeneous redundancy, wherein the CBTC system comprises a communication subsystem DCS and an onboard ATP subsystem MVTP and a trackside ATP interval protection subsystem MWSP that communicate with the communication subsystem DCS separately; the onboard ATP subsystem MVTP receives a movement authority information from the trackside ATP interval protection subsystem MWSP, and receives, when the movement authority information is unavailable, information about a target distance or a speed code to perform safe train running protection; and the trackside ATP interval protection subsystem MWSP automatically identifies and uses a corresponding block mode based on information sent by the onboard ATP subsystem MVTP, calculates a movement authority and the target distance or the speed code in the corresponding block mode, and sends a calculation result to a corresponding train.
  2. 2 . The CBTC system based on interval protection and heterogeneous redundancy according to claim 1 , wherein the onboard ATP subsystem MVTP is compatible with modes of the movement authority and the speed code.
  3. 3 . The CBTC system based on interval protection and heterogeneous redundancy according to claim 1 , wherein the trackside ATP interval protection subsystem MWSP performs self-adaptive operations of a moving block mode and a quasi-moving block mode based on an active train positioning state.
  4. 4 . The CBTC system based on interval protection and heterogeneous redundancy according to claim 1 , wherein the movement authority is calculated for a train with a normal active positioning function and in ATP mode.
  5. 5 . The CBTC system based on interval protection and heterogeneous redundancy according to claim 1 , wherein the target distance is calculated for a train with an abnormal active positioning function and in ATP mode.
  6. 6 . The CBTC system based on interval protection and heterogeneous redundancy according to claim 1 , wherein the speed code is calculated for a train in an RM mode.
  7. 7 . The CBTC system based on interval protection and heterogeneous redundancy according to claim 1 , wherein both the onboard ATP subsystem MVTP and the trackside ATP interval protection subsystem MWSP are a set of safety platforms.
  8. 8 . An implementation method for the CBTC system based on interval protection and heterogeneous redundancy according to claim 1 , specifically comprising the following steps: step S 1 , when an active train positioning function is normal, calculating, by the trackside ATP interval protection subsystem MWSP, the movement authority based on a principle of moving block, and when the active train positioning function is abnormal and a train is out of position, performing step S 2 , otherwise performing the step S 1 again; the step S 2 , calculating, by the trackside ATP interval protection subsystem MWSP, the target distance or speed code based on information about a train out of position, and performing step S 3 ; and the step S 3 , returning to the step S 1 if the train out of position is re-positioned during running in a quasi-moving block mode.
  9. 9 . The implementation method according to claim 8 , wherein the movement authority in the step S 1 is received by the onboard ATP subsystem MVTP, and calculation of a safety protection curve is calculated, to assist in train running.
  10. 10 . The implementation method according to claim 8 , wherein the information about the train out of position in the step S 2 comprises information about occupancy of a section in which a non-positioning envelope corresponding to the train out of position is located, information about permanent or temporary speed limit setting of a line, information about occupancy of adjacent trains or sections on the line, state information of trackside signaling equipment, and driving mode information of the train.
  11. 11 . The implementation method according to claim 10 , wherein the trackside signaling equipment comprises a signal, a switch, a platform emergency closing button, and a platform door.
  12. 12 . The implementation method according to claim 8 , wherein the target distance in the step S 3 is calculated for a train in ATP mode.
  13. 13 . The implementation method according to claim 8 , wherein the speed code in the step S 3 is calculated for a train in an RM mode.
  14. 14 . The implementation method according to claim 8 , wherein the target distance or the speed code in the step S 2 is received by the onboard ATP subsystem MVTP, and speed monitoring is performed on a running train out of position, to assist in train running.
  15. 15 . An electronic device, comprising a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the program, the method according to claim 8 is implemented.
  16. 16 . An non-transitory computer-readable storage medium, storing a computer program, wherein when the program is executed by a processor, the method according to claim 8 is implemented.

Description

TECHNICAL FIELD The present invention relates to train interval protection of a CBTC system, and in particular to a CBTC system based on interval protection and heterogeneous redundancy and an implementation method. BACKGROUND Train interval protection is an important function to ensure safe train running. To ensure the safe train running, intervals should be kept between trains running on a same line, and the intervals usually depend on speeds, braking distances, safe protection distances, and other factors of the trains. In a specified section, a manner in which only one train is allowed to run is called block, which mainly includes fixed block, moving block, and quasi-moving block. An existing CBTC system performs train interval protection based on active positioning and a principle of the moving block. The system causes a train to be out of position in the case of train skidding, instantaneous loss of a switch position, or the like. In this case, a trackside area controller cannot obtain position information of the train out of position, so that the train out of position cannot continue to run in ATP mode, which affects running of a subsequent train, resulting in a significant reduction in running efficiency of a whole line. At present, a multi-mode train control solution using BM+CBTC or TBTC+CBTC is used for resolving the problem. However, in the two solutions, the other mode of train control system needs to be configured and integrated with an existing system, which increases the complexity of the system. SUMMARY The present invention provides a CBTC system based on interval protection and heterogeneous redundancy and an implementation method, to overcome defects in the prior art. The purpose of the present invention is achieved using the following technical solutions: According to a first aspect of the present invention, a CBTC system based on interval protection and heterogeneous redundancy is provided, and the CBTC system includes a communication subsystem DCS and an onboard ATP subsystem MVTP and a trackside ATP interval protection subsystem MWSP that communicate with the communication subsystem DCS separately;the onboard ATP subsystem MVTP receives movement authority information from the trackside ATP interval protection subsystem MWSP, and receives, when the movement authority information is unavailable, information about a target distance or speed code to perform safe train running protection; and the trackside ATP interval protection subsystem MWSP automatically identifies and uses a corresponding block mode based on information sent by the onboard ATP subsystem MVTP, calculates movement authority and a target distance or speed code in the corresponding block mode, and sends a calculation result to a corresponding train. In a preferred technical solution, the onboard ATP subsystem MVTP is compatible with modes of the movement authority and the speed code. In a preferred technical solution, the trackside ATP interval protection subsystem MWSP performs self-adaptive operations of a moving block mode and a quasi-moving block mode based on an active train positioning state. In a preferred technical solution, the movement authority is calculated for a train with a normal active positioning function and in ATP mode. In a preferred technical solution, the target distance is calculated for a train with an abnormal active positioning function and in ATP mode. In a preferred technical solution, the speed code is calculated for a train in an RM mode. In a preferred technical solution, both the onboard ATP subsystem MVTP and the trackside ATP interval protection subsystem MWSP are a set of safety platforms. According to a second aspect of the present invention, an implementation method for the CBTC system based on interval protection and heterogeneous redundancy is provided, specifically including the following steps: step S1, when an active train positioning function is normal, calculating, by the trackside ATP interval protection subsystem MWSP, the movement authority based on a principle of moving block, and when the active train positioning function is abnormal and a train is out of position, performing step S2, otherwise performing step S1 again;step S2, calculating, by the trackside ATP interval protection subsystem MWSP, the target distance or speed code based on information about a train out of position, and performing step S3; andstep S3, returning to step S1 if the train out of position is re-positioned during running in a quasi-moving block mode. In a preferred technical solution, the movement authority in step S1 is received by the onboard ATP subsystem MVTP, and calculation of a safety protection curve is calculated, to assist in train running. In a preferred technical solution, the information about the train out of position in step S2 includes information about occupancy of a section in which a non-positioning envelope corresponding to the train out of position is located, information abou