Backup positioning-based CBTC (Communication Based Train Control) system train degradation operation method, equipment and medium

Abstract

The invention relates to a CBTC (Communication Based Train Control) system train degradation operation method and equipment based on backup positioning and a medium, and the method comprises the following steps: S1, when a train runs normally, a vehicle-mounted controller CC and a backup positioning system BLS are respectively in communication connection with a zone controller ZC and a dispatching center ATS at the same time; s2, when the area controller ZC detects that the vehicle-mounted controller CC breaks down, communication connection with the vehicle-mounted controller CC is disconnected; s3, when the backup positioning system BLS detects that the vehicle-mounted controller CC breaks down, a driver is prompted to enter a degradation mode for operation; s4, the driver processes the fault of the vehicle-mounted controller CC according to the instruction of the dispatching center ATS, and drives the train to run to the platform to stop according to the instruction of the trackside signal machine; and S5, after the fault of the vehicle-mounted controller CC is recovered, the backup positioning system BLS prompts a driver to switch to a normal operation mode and the like. Compared with the prior art, the method has the advantages of improving the line operation efficiency and the like.

Description

Technical Field

[0001] The present invention relates to a rail transit signal system, and more particularly to a method, device and medium for downgraded operation of a train in a CBTC system based on backup positioning. Background Art

[0002] In a communication-based train control system (hereinafter referred to as a CBTC system), a trackside area controller ZC dynamically calculates the train protection range and movement authority according to the train positioning sent by a vehicle controller CC, so as to implement the moving block function of the CBTC system. When the vehicle controller CC fails, the trackside area controller ZC relies on secondary detection devices such as axle counters to calculate the train position, and the train can only run in a fixed block mode, greatly reducing the line passing capacity and operation efficiency.

[0003] After retrieval, Chinese Patent Publication No. CN117719564A discloses a backup positioning method for a TACS system. Specifically, a trackside train controller WTC calculates the train positioning based on the beacon position read by an on-vehicle backup device, and realizes the need for the trackside train controller WTC to control the train operation for train positioning in the scenario where the on-vehicle main device fails. This method is a supplement for the TACS system without secondary detection devices, and the train positioning range calculated based on the beacon position by this method is very large, and it cannot meet the requirements of the area controller ZC of the CBTC system for train positioning accuracy.

[0004] With the increasing passenger flow in urban rail transit, the requirement for reducing the impact of equipment failures on line operation is getting higher and higher. Therefore, how to improve the line operation efficiency after the on-vehicle equipment of the signal system fails has become a problem to be solved. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned defects existing in the prior art, and to provide a method, device and medium for downgraded operation of a train in a CBTC system based on backup positioning.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] According to the first aspect of the present invention, there is provided a method for downgraded operation of a train in a CBTC system based on backup positioning, the method comprising the following steps:

[0008] Step S1, when the train is running normally, the vehicle controller CC and the backup positioning system BLS are simultaneously maintained in communication connection with the area controller ZC and the dispatching center ATS respectively;

[0009] Step S2, when the area controller ZC detects that the vehicle controller CC fails, disconnects the communication connection with the vehicle controller CC, and controls the trackside signal machine to light up according to the downgraded operation logic;

[0010] Step S3: After the backup location system BLS detects a failure of the vehicle-mounted controller CC, it prompts the driver to enter the degraded mode of operation. When the driver selects the degraded mode, the backup location system BLS sends the train degraded operation information to the dispatch center ATS.

[0011] Step S4: The driver processes the failure of the vehicle-mounted controller CC according to the instructions of the dispatch center ATS and drives the train to stop at the platform according to the indication of the wayside signal.

[0012] Step S5: After the failure of the vehicle-mounted controller CC is restored, the backup location system BLS prompts the driver to switch to the normal operation mode. The zone controller ZC uses the vehicle-mounted controller CC to send train location information to calculate the train's protection envelope and movement authorization.

[0013] Step S6: The driver switches back to the normal operation mode, and the train exits the degraded operation.

[0014] As a preferred technical solution, in step S1, the vehicle-mounted controller CC calculates the train location according to the combination of the optoelectronic speed sensor and the European beacon antenna, sends the train location information to the zone controller ZC, and at the same time sends the equipment status of the vehicle-mounted controller CC to the dispatch center ATS.

[0015] As a preferred technical solution, in step S1, the backup location system BLS calculates the train location according to the combination of the Hall speed sensor and the European beacon antenna, sends the train location information to the zone controller ZC, and at the same time sends the train operation mode to the dispatch center ATS.

[0016] As a preferred technical solution, in step S1, when the vehicle-mounted controller CC is working properly, the zone controller ZC calculates the train's protection envelope and movement authorization according to the train location information sent by the vehicle-mounted controller CC.

[0017] As a preferred technical solution, the dispatch center ATS uses the train operation mode sent by the backup location system BLS to distinguish between trains in normal operation and degraded operation.

[0018] As a preferred technical solution, step S2 specifically includes:

[0019] Step S201: If the area controller ZC does not receive a valid message from the vehicle controller CC for more than Max_CC2ZC_validity_time, it is determined that the vehicle controller CC has failed. Then, the communication connection with the vehicle controller CC is cut off, and the protection envelope and movement authorization of the train are calculated based on the train positioning information sent by the backup positioning system BLS, where Max_CC2ZC_validity_time is the validity period for the area controller ZC to receive messages from the vehicle controller CC.

[0020] Step S202: The area controller ZC lights up the wayside signals within the movement authorization of the train according to the degraded operation logic.

[0021] As a preferred technical solution, step S3 specifically includes:

[0022] Step S301: If the backup positioning system BLS does not receive a valid message from the vehicle controller CC for more than Max_CC2BLS_validity_time, or the train positioning information in the received message from the vehicle controller CC is invalid, it is determined that the vehicle controller CC has failed, where Max_CC2BLS_validity_time is the validity period for the backup positioning system BLS to receive messages from the vehicle controller CC.

[0023] Step S302: The backup positioning system BLS prompts the driver to enter the degraded mode through the on-vehicle display unit DMI and light warning.

[0024] Step S303: After the driver selects the degraded mode, the backup positioning system BLS sends the train degraded operation information to the dispatching center ATS, and the dispatching center ATS displays the train as a degraded train on the dispatching display interface.

[0025] As a preferred technical solution, step S4 specifically includes:

[0026] Step S401: The dispatching center ATS issues a fault handling instruction to the driver according to the equipment status sent by the vehicle controller CC.

[0027] Step S402: The driver drives the train to stop at the platform according to the indication of the wayside signals.

[0028] Step S403: After stopping at the platform, if the vehicle controller CC is still in the out-of-position state, the vehicle controller CC realizes rapid recovery of train positioning through the train positioning information of the backup positioning system BLS.

[0029] As a preferred technical solution, in step S401, if the status of the on-vehicle controller CC cannot be restored, the dispatching center ATS issues an instruction to restart the on-vehicle controller CC; if the on-vehicle controller CC is out of position, the dispatching center ATS issues an instruction for the driver to drive the train to the platform for parking, and the on-vehicle controller CC will re-position itself during the subsequent movement of the train.

[0030] As a preferred technical solution, step S5 specifically includes:

[0031] Step S501, when the backup positioning system BLS and the zone controller ZC receive valid train positioning information from the on-vehicle controller CC again, it is considered that the fault of the on-vehicle controller CC has been restored;

[0032] Step S502, the backup positioning system BLS prompts the driver to switch to the normal operation mode;

[0033] Step S503, the train positioning information used by the zone controller ZC is switched back to the train positioning sent by the on-vehicle controller CC.

[0034] As a preferred technical solution, step S6 specifically includes:

[0035] Step S601, the driver switches the driving mode to the normal operation mode according to the prompt of the backup positioning system BLS, and the train exits the degraded operation;

[0036] Step S602, the backup positioning system BLS sends the normal operation information of the train to the dispatching center ATS, and the dispatching center ATS displays the train as a normal train on the dispatching display interface.

[0037] According to the second aspect of the present invention, there is provided an electronic device, including a memory and a processor, where a computer program is stored on the memory, and when the processor executes the program, the method described above is implemented.

[0038] According to the third aspect of the present invention, there is provided a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the method described above is implemented.

[0039] Compared with the prior art, the present invention has the following advantages:

[0040] 1) After the on-vehicle controller CC fails, the zone controller ZC directly uses the train positioning sent by the backup positioning system BLS to calculate the train protection envelope and movement authorization, without calculating the train positioning through secondary detection devices such as axle counters, avoiding downgrading the faulty train to a non-CBTC train, reducing the impact on the full-line operation after downgrading, and improving the line operation efficiency;

[0041] 2) When the on-vehicle controller CC of the present invention fails and does not meet the conditions for re-initializing positioning, it can directly use the train positioning information of the backup positioning system BLS at the platform to achieve rapid positioning, shortening the fault recovery time;

[0042] 3) After the on-vehicle controller CC of the present invention fails, the zone controller ZC directly uses the train positioning sent by the backup positioning system BLS, reducing the dependence on secondary detection equipment. The line design can reduce the layout of secondary detection equipment, and at the same time reduce the impact of axle counter failures on the line operation efficiency;

[0043] 4) The on-vehicle controller CC and the backup positioning system BLS of the present invention respectively use an optoelectronic speed sensor and a Hall speed sensor, reducing the probability of common-mode failures of the speed sensors and improving the reliability of train speed measurement; at the same time, an independent European beacon antenna is used, avoiding the repeated layout of line beacons, reducing the construction cost and maintenance workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is the specific flowchart of the method of the present invention;

[0045] Figure 2 is the schematic diagram of the on-vehicle controller fault-recovery process of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0047] As Figure 1 shown, a method for downgraded operation of a train in a CBTC system based on backup positioning includes the following steps:

[0048] Step S1: When the train is running normally, the on-vehicle controller CC and the backup positioning system BLS simultaneously maintain communication with the zone controller ZC and the dispatching center ATS;

[0049] Step S2: After the zone controller ZC detects a failure of the on-vehicle controller CC, it disconnects the communication link with the on-vehicle controller CC and controls the trackside signal lights to light up according to the downgraded operation logic;

[0050] Step S3: After the backup positioning system BLS detects a failure of the on-vehicle controller CC, it prompts the driver to enter the downgraded mode for operation. After the driver selects the downgraded mode, the backup positioning system BLS sends the train downgraded operation information to the dispatching center ATS;

[0051] Step S4: The driver processes the on-vehicle controller CC failure according to the ATS instruction of the dispatching center and drives the train to stop at the platform according to the indication of the signal

[0052] Step S5: After the on-vehicle controller CC failure is recovered, the backup positioning system BLS prompts the driver to switch to the normal operation mode, and the zone controller ZC uses the on-vehicle controller CC to send train positioning information to calculate the train's protection envelope and movement authority

[0053] Step S6: The driver switches back to the normal operation mode, and the train exits the degraded operation

[0054] The specific steps of Step S1 include:

[0055] 1) The on-vehicle controller CC calculates the train positioning according to the combination of the optoelectronic speed sensor and the European beacon antenna, sends the train positioning information to the zone controller ZC, and at the same time sends the equipment status of the on-vehicle controller CC to the dispatching center ATS

[0056] 2) The backup positioning system BLS calculates the train positioning according to the combination of the Hall speed sensor and the European beacon antenna, sends the train positioning information to the zone controller ZC, and at the same time sends the train operation mode to the dispatching center ATS

[0057] 3) When the on-vehicle controller CC is working properly, the zone controller ZC calculates the train's protection envelope and movement authority according to the train positioning information sent by the on-vehicle controller CC

[0058] 4) The dispatching center ATS uses the train operation mode sent by the backup positioning system BLS to distinguish between normal operation and degraded operation trains

[0059] The specific steps of Step S2 are as follows:

[0060] 1) If the zone controller ZC does not receive a valid message from the on-vehicle controller CC for more than Max_CC2ZC_validity_time, it determines that the on-vehicle controller CC has failed, then cuts off the communication link with the on-vehicle controller CC, and calculates the train's protection envelope and movement authority according to the train positioning information sent by the backup positioning system BLS

[0061] 2) The zone controller ZC lights up the wayside signal machines within the train's movement authority according to the degraded operation logic

[0062] The specific steps of Step S3 are as follows:

[0063] 1) If the Backup Location System BLS does not receive a valid message from the on-vehicle controller CC for more than Max_CC2BLS_validity_time, or the train location information in the received message from the on-vehicle controller CC is invalid, it is determined that the on-vehicle controller CC has failed;

[0064] 2) The Backup Location System BLS prompts the driver to enter the degraded mode through the on-vehicle display unit DMI and light warning;

[0065] 3) After the driver selects the degraded mode, the Backup Location System BLS sends the train degraded operation information to the dispatching center ATS, and the dispatching center ATS displays that the train is a degraded train on the dispatching display interface;

[0066] The specific steps of step S4 are as follows:

[0067] 1) The dispatching center ATS issues a fault handling instruction to the driver according to the equipment status sent by the on-vehicle controller CC; specifically, if the status of the on-vehicle controller CC cannot be restored, the dispatching center ATS issues an instruction to restart the on-vehicle controller CC; if the on-vehicle controller CC is out of position, the dispatching center ATS issues an instruction for the driver to drive the train to stop at the platform, and the on-vehicle controller CC will re-locate during the subsequent movement of the train;

[0068] 2) The driver drives the train to stop at the platform according to the indication of the trackside signal;

[0069] 3) After stopping at the platform, if the on-vehicle controller CC is still out of position, the on-vehicle controller CC realizes the rapid recovery of train location through the train location information of the Backup Location System BLS;

[0070] The specific steps of step S5 are as follows:

[0071] 1) When the Backup Location System BLS and the Zone Controller ZC receive the valid train location information from the on-vehicle controller CC again, it is considered that the fault of the on-vehicle controller CC has been recovered;

[0072] 2) The Backup Location System BLS prompts the driver to switch to the normal operation mode;

[0073] 3) The train location information used by the Zone Controller ZC is switched back to the train location sent by the on-vehicle controller CC;

[0074] The specific steps of step S6 are as follows:

[0075] 1) The driver switches the driving mode to the normal operation mode according to the prompt of the Backup Location System BLS, and the train exits the degraded operation;

[0076] 2) The Backup Location System (BLS) sends the normal train operation information to the dispatching center ATS, and the dispatching center ATS displays the train as a normal train on the dispatching display interface.

[0077] As Figure 2 shown, the on-vehicle controller CC and the Backup Location System (BLS) simultaneously send the train location information to the Zone Controller (ZC), and at the same time, the equipment status of the on-vehicle controller CC is sent to the dispatching center ATS, and the train operation mode of the Backup Location System (BLS) is sent to the dispatching center ATS.

[0078] The method for judging the failure of the on-vehicle controller CC is as follows: If the Zone Controller (ZC) does not receive a valid message from the on-vehicle controller CC within Max_CC2ZC_validity_time, it is determined that the on-vehicle controller CC has failed. Then, the communication link with the on-vehicle controller CC is cut off, and the protection envelope and movement authorization of the train are calculated based on the train location information sent by the Backup Location System (BLS). If the Backup Location System (BLS) does not receive a valid message from the on-vehicle controller CC within Max_CC2BLS_validity_time, or the train location information in the received message from the on-vehicle controller CC is invalid, it is determined that the on-vehicle controller CC has failed, and the train degradation operation information is sent to the dispatching center ATS, and the dispatching center ATS displays the train as a degraded train on the dispatching display interface.

[0079] The method for judging the recovery of the failure of the on-vehicle controller CC is as follows: When the Backup Location System (BLS) and the Zone Controller (ZC) receive the valid train location information from the on-vehicle controller CC again, it is considered that the failure of the on-vehicle controller CC has been recovered. After the failure of the on-vehicle controller CC is recovered, the Backup Location System (BLS) prompts the driver to switch to the normal operation mode, and the train location information used by the Zone Controller (ZC) is switched back to the train location sent by the on-vehicle controller CC.

[0080] The above is the introduction of the method embodiment. The following further illustrates the solution of the present invention through the embodiments of the electronic device and the storage medium.

[0081] The embodiment of the present invention further provides an electronic device including a Central Processing Unit (CPU), which can execute various appropriate actions and processes according to the computer program instructions stored in the Read-Only Memory (ROM) or the computer program instructions loaded from the storage unit into the Random Access Memory (RAM). In the RAM, various programs and data required for device operation can also be stored. The CPU, ROM, and RAM are connected to each other through a bus. The Input / Output (I / O) interface is also connected to the bus.

[0082] Multiple components in the device are connected to the I / O interface, including: an input unit, such as a keyboard, a mouse, etc.; an output unit, such as various types of displays, speakers, etc.; a storage unit, such as a disk, an optical disc, etc.; and a communication unit, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit allows the device to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0083] The processing unit executes the various methods and processes described above, such as methods S1 to S6. For example, in some embodiments, methods S1 to S6 can be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as the storage unit. In some embodiments, part or all of the computer program can be loaded and / or installed onto the device via the ROM and / or the communication unit. When the computer program is loaded into the RAM and executed by the CPU, one or more steps of methods S1 to S6 described above can be executed. Alternatively, in other embodiments, the CPU can be configured to execute methods S1 to S6 by any other suitable means (e.g., by means of firmware).

[0084] The functions described above herein can be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that can be used include: Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), Systems on Chip (SOCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0085] The program code for implementing the method of the present invention can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing devices, such that when the program codes are executed by the processor or controller, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The program codes can be executed entirely on the machine, partially on the machine, executed partially on the machine and partially on a remote machine as an independent software package, or executed entirely on a remote machine or server.

[0086] In the context of the present invention, a machine-readable medium can be a tangible medium that can contain or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of the machine-readable storage medium would include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0087] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for the degraded operation of a train in a CBTC system based on backup positioning, characterized in that, The method includes the following steps: Step S1, when the train is operating normally, the on-vehicle controller CC and the backup positioning system BLS simultaneously maintain communication connections with the zone controller ZC and the dispatching center ATS respectively; Step S2, when the zone controller ZC detects a failure of the on-vehicle controller CC, it disconnects the communication connection with the on-vehicle controller CC and controls the trackside signal to light up according to the degraded operation logic; Step S3, when the backup positioning system BLS detects a failure of the on-vehicle controller CC, it prompts the driver to enter the degraded mode of operation; after the driver selects the degraded mode, the backup positioning system BLS sends the train degraded operation information to the dispatching center ATS; Step S4, the driver processes the failure of the on-vehicle controller CC according to the instructions of the dispatching center ATS and drives the train to the platform for parking according to the indication of the trackside signal; Step S5, when the failure of the on-vehicle controller CC is recovered, the backup positioning system BLS prompts the driver to switch to the normal operation mode, and the zone controller ZC uses the on-vehicle controller CC to send train positioning information to calculate the train's protection envelope and movement authorization; Step S6, the driver switches back to the normal operation mode, and the train exits the degraded operation.

2. The method for train degraded operation of a CBTC system based on backup positioning according to claim 1, wherein In step S1, the on-vehicle controller CC calculates the train positioning according to the combination of the optoelectronic speed sensor and the European beacon antenna, and sends the train positioning information to the zone controller ZC, and at the same time sends the equipment status of the on-vehicle controller CC to the dispatching center ATS.

3. The train degradation operation method of a CBTC system based on backup positioning according to claim 1, wherein In step S1, the backup positioning system BLS calculates the train positioning according to the combination of the Hall speed sensor and the European beacon antenna, and sends the train positioning information to the zone controller ZC, and at the same time sends the train operation mode to the dispatching center ATS.

4. The method for the degraded operation of a train in a CBTC system based on backup positioning according to claim 1, wherein In step S1, when the on-vehicle controller CC is working properly, the zone controller ZC calculates the train's protection envelope and movement authorization according to the train positioning information sent by the on-vehicle controller CC.

5. A method for the degraded operation of a train in a CBTC system based on backup positioning according to claim 1, characterized in that, The dispatching center ATS uses the train operation mode sent by the backup positioning system BLS to distinguish between trains in normal operation and degraded operation.

6. The method for train degraded operation of a CBTC system based on backup positioning according to claim 1, characterized in that, Step S2 specifically includes: Step S201, if the zone controller ZC does not receive a valid message from the on-vehicle controller CC for more than Max_CC2ZC_validity_time, it determines that the on-vehicle controller CC has failed, then cuts off the communication connection with the on-vehicle controller CC, and calculates the train's protection envelope and movement authorization according to the train positioning information sent by the backup positioning system BLS, where Max_CC2ZC_validity_time is the validity period for the zone controller ZC to receive messages from the on-vehicle controller CC; Step S202, the zone controller ZC lights up the trackside signals within the train's movement authorization according to the degraded operation logic.

7. A method for downgraded operation of a train in a CBTC system based on backup positioning according to claim 1, wherein Step S3 specifically includes: Step S301: If the Backup Location System (BLS) has not received a valid message from the on-vehicle controller (CC) for more than Max_CC2BLS_validity_time, or the train location information in the received message from the on-vehicle controller (CC) is invalid, it is determined that the on-vehicle controller (CC) has failed, where Max_CC2BLS_validity_time is the validity period for the Backup Location System (BLS) to receive messages from the on-vehicle controller (CC). Step S302: The Backup Location System (BLS) prompts the driver to enter the degraded mode through the on-vehicle display unit (DMI) and light warning. Step S303: After the driver selects the degraded mode, the Backup Location System (BLS) sends the train degraded operation information to the dispatch center ATS, and the dispatch center ATS displays the train as a degraded train on the dispatch display interface.

8. A method for downgraded operation of a train in a CBTC system based on backup positioning according to claim 1, characterized in that, The specific steps of Step S4 are as follows: Step S401: The dispatch center ATS issues a fault handling instruction to the driver according to the equipment status sent by the on-vehicle controller (CC). Step S402: The driver drives the train to stop at the platform according to the indication of the trackside signal. Step S403: After stopping at the platform, if the on-vehicle controller (CC) is still in the out-of-position state, the on-vehicle controller (CC) realizes a rapid recovery of train location through the train location information of the Backup Location System (BLS).

9. The method for train degraded operation of a CBTC system based on backup positioning according to claim 8, wherein In Step S401, if the status of the on-vehicle controller (CC) cannot be restored, the dispatch center ATS issues an instruction to restart the on-vehicle controller (CC); if the on-vehicle controller (CC) is out of position, the dispatch center ATS issues an instruction for the driver to drive the train to stop at the platform, and the on-vehicle controller (CC) will re-locate during the subsequent movement of the train.

10. The method for the train degraded operation of the CBTC system based on the backup positioning according to claim 1, wherein, The specific steps of Step S5 are as follows: Step S501: When the Backup Location System (BLS) and the Zone Controller (ZC) receive valid train location information from the on-vehicle controller (CC) again, it is considered that the failure of the on-vehicle controller (CC) has been recovered. Step S502: The Backup Location System (BLS) prompts the driver to switch to the normal operation mode. Step S503: The train location information used by the Zone Controller (ZC) is switched back to the train location sent by the on-vehicle controller (CC).

11. The train degradation operation method of a CBTC system based on backup positioning according to claim 1, wherein, The specific steps of Step S6 are as follows: Step S601: The driver switches the driving mode to the normal operation mode according to the prompt of the Backup Location System (BLS), and the train exits the degraded operation. Step S602: The Backup Location System (BLS) sends the normal operation information of the train to the dispatch center ATS, and the dispatch center ATS displays the train as a normal train on the dispatch display interface.

12. An electronic device, comprising a memory and a processor, wherein a computer program is stored on the memory, characterized in that, When the processor executes the program, it implements the method according to any one of claims 1 to 11.

13. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method according to any one of claims 1 to 11.

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