Train active protection method and device based on backup positioning system and medium

Abstract

The invention relates to a train active protection method and device based on a backup positioning system and a medium, and the method comprises the steps: S1, when only the backup positioning system is available after a train is degraded, a trackside train controller obtains positioning information from the backup positioning system, and screens out a trackside beacon ID related to the possible position of the train according to the positioning information; s2, after the train moves, the backup positioning system sends the read trackside beacon IDs to a trackside train controller, the trackside train controller compares the received trackside beacon IDs with the trackside beacon IDs screened out in the step S1, if the received trackside beacon IDs are not in the screened-out trackside beacon IDs, it is judged that the train has unexpected crossing, and if the received trackside beacon IDs are not in the screened-out trackside beacon IDs, it is judged that the train has unexpected crossing. If not, continuing to execute the step S2; and S3, the trackside train controller triggers active protection of unexpected crossing. Compared with the prior art, the method has the advantages that the detected granularity is improved, and the like.

Description

Technical Field

[0001] The invention relates to a rail transit signal system, and in particular to a train active protection method, equipment and medium based on a backup positioning system. Background Art

[0002] In the existing TACS system structure, the controllers are mainly divided into the on-board controller CC and the trackside controller WTC. The on-board controller is set on the train. Based on the received tasks, combined with the real-time continuous positioning information and vehicle input information, it provides safety protection for the online operation of the train and also realizes the function of automatic driving; the trackside controller WTC is a backup redundant train controller. When the position information of the on-board controller CC is lost or the equipment function fails, it replaces the on-board controller CC to control the train.

[0003] When the onboard continuous positioning fails or the continuous positioning device fails, the train safety positioning will be converted from continuous positioning to discontinuous positioning with the help of the backup positioning system. In the existing schemes, passive protection is often used for discontinuous positioning, that is, the area occupied by the discontinuous positioning is protected to ensure that other trains cannot enter. However, the scenario where the discontinuous positioning train mistakenly leaves the protection area is only achieved through restriction, but active protection of the train is not considered.

[0004] After searching, Chinese patent publication number CN117565944A discloses a TACS system signal protection zone intrusion detection method, equipment and medium. When an unauthorized train illegally intrudes into the TACS signal protection zone, the method detects it through an axle counting magnetic head installed at the boundary of the TACS signal protection zone, and then performs security protection on the section at the boundary of the TACS signal protection zone. This existing patent achieves rapid detection of unauthorized trains by arranging a small number of axle counting devices at the boundary of the TACS system signal protection zone. However, the existing patent uses axle counting detection, which has problems such as low detection granularity and high implementation cost. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and to provide a train active protection method, equipment and medium based on a backup positioning system.

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

[0007] According to a first aspect of the present invention, a train active protection method based on a backup positioning system is provided, the method comprising:

[0008] Step S1, when only the backup positioning system is available after the train is downgraded, the trackside train controller obtains positioning information from the backup positioning system, and selects the trackside beacon IDs involved in the possible location of the train according to the positioning information;

[0009] Step S2, after the train moves, the backup positioning system sends the read trackside beacon ID to the trackside train controller, and the trackside train controller compares the received trackside beacon ID with the trackside beacon ID screened out in step S1. If the received trackside beacon ID is not in the screened trackside beacon ID, it is determined that the train has an unexpected crossing, and step S3 is executed, otherwise, step S2 is continued;

[0010] Step S3, the trackside train controller triggers active protection against unexpected crossing.

[0011] As a preferred technical solution, the backup positioning system updates the train positioning according to the read trackside beacon information, and sends the acquired positioning to the trackside train controller.

[0012] As a preferred technical solution, the trackside train controller realizes train safety protection when both the main and backup on-board controllers are unavailable.

[0013] As a preferred technical solution, in step S1, a protective buffer area is provided outside the possible location of the train.

[0014] As a preferred technical solution, in step S2, the trackside beacons other than the train position marked by the trackside train controller are defined as crossing trigger beacons.

[0015] As a preferred technical solution, in step S2, if the trackside train controller receives information about the crossing trigger beacon through the backup positioning system, it is determined that an unexpected crossing has occurred, that is, the train has not moved according to the dispatching instructions.

[0016] As a preferred technical solution, when the trackside train controller learns that the train has not moved according to the dispatching instructions, it sends the crossing blocking information to the trackside resource manager, and the trackside resource manager blocks the affected area.

[0017] As a preferred technical solution, the trackside train controller sends the unexpected crossing information to the dispatching center, and after the dispatching center confirms the unexpected crossing information, it converts the affected area from a blocked state to a state allowing train movement.

[0018] As a preferred technical solution, the trackside train controller maintains an overestimation of the train position, and all beacons are considered to be crossing trigger beacons.

[0019] As a preferred technical solution, after the dispatching center sets the dispatching task, the beacon within the dispatching task range is switched to a non-crossing trigger beacon. The train moves according to the dispatching task, and the backup positioning system reads the beacon after the train moves. The trackside train controller reconfirms the train position and converts the original over-estimated train position to the reconfirmed train position.

[0020] According to a second aspect of the present invention, there is provided an electronic device, comprising a memory and a processor, wherein a computer program is stored in the memory, and the method described above is implemented when the processor executes the program.

[0021] According to a third aspect of the present invention, there is provided a computer-readable storage medium having a computer program stored thereon, wherein the program implements the method described above when executed by a processor.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1) The present invention uses the screened beacon ID to make a determination, which improves the granularity of the detection compared to the axle counter detection;

[0024] 2) After the trackside train controller WTC of the present invention obtains the train location through the backup positioning system BLS, it can achieve the same undesirable protection as the on-board controller;

[0025] 3) The present invention realizes a new crossing detection method different from the existing axle counting detection by adding a crossing protection method based on the backup positioning system BLS;

[0026] 4) The present invention realizes active protection and also further avoids dangerous scenarios such as squeeze and collision that may be caused when the train exceeds the authorized range by adding a protection buffer zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the overall architecture of the TACS system according to an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of selecting a crossing trigger beacon based on a train position according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of protection triggered by unexpected movement of a train according to an embodiment of the present invention;

[0030] Figure 4 A schematic diagram of scheduling and confirming a protection alarm according to an embodiment of the present invention;

[0031] Figure 5 It is a schematic diagram of an embodiment of the present invention in which a train moves according to a dispatching instruction and reconfirms the position;

[0032] Figure 6 Flow chart of the method of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0034] like Figure 1 As shown, the TACS system of the present invention mainly includes a main vehicle controller NCC, a backup vehicle controller BCC, a trackside train controller WTC, a trackside resource manager WRC, and a backup positioning system BLS, wherein the backup positioning system BLS is responsible for updating the train positioning according to the read trackside beacon information, and sending the acquired positioning to the trackside train manager. The trackside train controller WTC is responsible for realizing train safety protection when both the main and backup vehicle controllers are unavailable, and the trackside resource manager WRC is responsible for resource management according to the application of different controllers.

[0035] like Figure 6 As shown, the present invention provides an active train protection method based on a backup positioning system, the method comprising:

[0036] Step S1, when only the backup positioning system is available after the train is downgraded, the trackside train controller obtains positioning information from the backup positioning system, and selects the trackside beacon IDs involved in the possible location of the train according to the positioning information;

[0037] Step S2, after the train moves, the backup positioning system sends the read trackside beacon ID to the trackside train controller, and the trackside train controller compares the received trackside beacon ID with the trackside beacon ID screened out in step S1. If the received trackside beacon ID is not in the screened trackside beacon ID, it is determined that the train has an unexpected crossing, and step S3 is executed, otherwise, step S2 is continued;

[0038] Step S3, the trackside train controller triggers active protection against unexpected crossings, and the protection range is consistent with that of the onboard controller.

[0039] like Figure 2As shown, the trackside train controller WTC selects the crossing trigger beacon according to the location of the train, such as the red beacon marked in the figure. If the trackside train controller WTC obtains the information of such beacon through the backup positioning system BLS, it will determine that the train has not moved according to the dispatching instruction. The green part in the figure is the train position confirmed by the system based on the information provided by BLS, and the yellow part is the protection buffer area. The protection buffer area means that when the train mistakenly crosses the green part and reads the red beacon, the system can still ensure that other trains will not enter the buffer zone, reducing the impact of the driver's erroneous operation. When the train is confirmed to have stopped, in order to improve availability, the yellow buffer part will be reduced.

[0040] like Figure 3 As shown, the train did not move according to the dispatching instructions. The trackside train controller WTC obtained the beacon through the backup positioning system BLS and learned that the train had an unexpected movement. The trackside train controller WTC sent the crossing blockade information to the trackside resource manager WRC. The trackside resource manager WRC blocked the affected area and prohibited other trains from entering the blocked area.

[0041] like Figure 4 As shown, the dispatcher confirms the unexpected crossing information, and the affected area is converted from the blocked state to the state that allows train movement. Since the train sends an unexpected movement, the trackside train controller WTC overestimates the train position, that is, it considers the train position equal to the crossing affected area. At the same time, all beacons are considered crossing trigger beacons.

[0042] like Figure 5 As shown, the dispatcher sets the task, the beacons within the task range are switched to non-crossing trigger beacons, the train moves according to the dispatching task, the backup positioning system (BLS) reads the beacon after the train moves, and the trackside train controller WTC reconfirms the train position, converting the original over-estimated train position into a more accurate train position.

[0043] The above is an introduction to the method embodiment. The following is a further explanation of the scheme of the present invention through electronic equipment and storage medium embodiments.

[0044] The embodiment of the present invention also provides an electronic device including a central processing unit (CPU), which can perform various appropriate actions and processes according to computer program instructions stored in a read-only memory (ROM) or computer program instructions loaded from a storage unit into a 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 via a bus. An input / output (I / O) interface is also connected to the bus.

[0045] Multiple components in the device are connected to the I / O interface, including: input units, such as keyboards, mice, etc.; output units, such as various types of displays, speakers, etc.; storage units, such as disks, optical disks, etc.; and communication units, such as network cards, modems, wireless communication transceivers, etc. The communication unit allows the device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunication networks.

[0046] The processing unit performs the various methods and processes described above, such as methods S1 to S3. For example, in some embodiments, methods S1 to S3 may be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit. In some embodiments, part or all of the computer program may be loaded and / or installed on the device via a ROM and / or a communication unit. When the computer program is loaded into the RAM and executed by the CPU, one or more steps of methods S1 to S3 described above may be performed. Alternatively, in other embodiments, the CPU may be configured to execute methods S1 to S3 in any other appropriate manner (e.g., by means of firmware).

[0047] The functions described above herein may be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), and the like.

[0048] 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 device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code can be executed entirely on the machine, partially on the machine, partially on the machine as a stand-alone software package and partially on a remote machine, or entirely on a remote machine or server.

[0049] In the context of the present invention, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0050] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A train active protection method based on a backup positioning system, characterized in that: The method includes: Step S1, when only the backup positioning system is available after the train is downgraded, the trackside train controller obtains positioning information from the backup positioning system, and selects the trackside beacon IDs involved in the possible location of the train according to the positioning information; Step S2, after the train moves, the backup positioning system sends the read trackside beacon ID to the trackside train controller, and the trackside train controller compares the received trackside beacon ID with the trackside beacon ID screened out in step S1. If the received trackside beacon ID is not in the screened trackside beacon ID, it is determined that the train has an unexpected crossing, and step S3 is executed, otherwise, step S2 is continued; Step S3, the trackside train controller triggers active protection against unexpected crossing.

2. According to claim 1, a train active protection method based on a backup positioning system is characterized in that: The backup positioning system updates the train positioning according to the read trackside beacon information and sends the acquired positioning to the trackside train controller.

3. According to claim 1, a train active protection method based on a backup positioning system is characterized in that: The trackside train controller implements train safety protection when both the main and backup onboard controllers are unavailable.

4. According to claim 1, a train active protection method based on a backup positioning system is characterized in that: In the step S1, a protective buffer area is provided outside the possible location of the train.

5. The active train protection method based on the backup positioning system according to claim 1 is characterized in that: In step S2, the trackside beacons other than the train position marked by the trackside train controller are defined as crossing trigger beacons.

6. The active train protection method based on the backup positioning system according to claim 5 is characterized in that: In step S2, if the trackside train controller receives the information of the crossing trigger beacon through the backup positioning system, it is determined that the train has unexpectedly crossed, that is, the train has not moved according to the dispatching instructions.

7. The active train protection method based on the backup positioning system according to claim 6 is characterized in that: When the trackside train controller learns that the train has not moved according to the dispatching instruction, it sends the crossing blocking information to the trackside resource manager, and the trackside resource manager blocks the affected area.

8. The active train protection method based on the backup positioning system according to claim 7 is characterized in that: The trackside train controller sends the unexpected crossing information to the dispatching center, and after the dispatching center confirms the unexpected crossing information, it converts the affected area from a blocked state to a train movement allowed state.

9. The active train protection method based on the backup positioning system according to claim 8 is characterized in that: The trackside train controller maintains an overestimate of the train position while all beacons are considered crossing trigger beacons.

10. The active train protection method based on the backup positioning system according to claim 9, characterized in that: After the dispatching center sets the dispatching task, the beacons within the dispatching task range are switched to non-crossing trigger beacons. The train moves according to the dispatching task. After the train moves, the backup positioning system reads the beacon. The trackside train controller reconfirms the train position and converts the previously overestimated train position into the reconfirmed train position.

11. An electronic device comprising a memory and a processor, wherein a computer program is stored in the memory, wherein: When the processor executes the program, the method according to any one of claims 1 to 10 is implemented.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 10 is implemented.

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