Active secondary train positioning device, method, equipment and medium

Abstract

The invention relates to an active secondary train positioning device, method, equipment and medium, the device is respectively connected with a trackside beacon and an interlocking subsystem, the device comprises a vehicle-mounted backup positioning subsystem BLS and an indoor backup positioning subsystem WBLS, the vehicle-mounted backup positioning subsystem BLS acquires trackside beacon information, and the indoor backup positioning subsystem WBLS acquires the trackside beacon information. And the beacon ID is sent to the indoor backup positioning subsystem WBLS, and the indoor backup positioning subsystem WBLS calculates the occupation state of the secondary detection section SDD according to the beacon ID and sends the occupation state to the interlocking subsystem. Compared with the prior art, the method has the advantages that passive secondary train positioning devices such as trackside axle counters or track circuits are reduced, the equipment maintenance workload can be reduced, and the whole life cycle cost of the system is reduced.

Description

Technical Field

[0001] The present invention relates to a rail transit signal system, and more particularly to an active secondary train positioning device, method, equipment and medium. Background Art

[0002] Urban rail transit signal systems usually use track circuits or axle counters as secondary train detection, serving as a degraded train positioning means when the CBTC system fails. However, track circuits and axle counters consist of indoor and outdoor equipment. The outdoor equipment needs to be installed on the rail as a carrier, and equipment such as coupling units also need to be installed beside the track, and are connected to the indoor computer room host through cables. These devices involve a large number of beside-track and indoor equipment during the construction of rail transit. Subsequently, during equipment maintenance and replacement, or when the railway maintenance department replaces the rails, a large amount of labor and material costs will also be incurred.

[0003] After retrieval, Chinese Patent Publication No. CN117719564A discloses a backup positioning method for a TACS system, specifically disclosing that existing beacons on the line can be reused, and by installing an antenna separately to read the line position information, the construction cost and maintenance workload can be effectively reduced while realizing train position tracking. In addition, train ID information can also be provided to the WTC. However, after obtaining the beacon information, this existing patent realizes the tracking of the train position when the on-vehicle CC fails through an on-vehicle backup positioning device, and the train control needs to be realized through a beside-track train controller, which is only applicable to the TACS system and cannot be applied to other systems, so there are problems such as low generality. Summary of the Invention

[0004] The purpose of the present invention is to overcome the defects of the above-mentioned existing technologies and provide an active secondary train positioning device, method, equipment and medium.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] According to a first aspect of the present invention, an active secondary train positioning device is provided. The device is respectively connected to a beside-track beacon and an interlocking subsystem. The device includes an on-vehicle backup positioning subsystem BLS and an indoor backup positioning subsystem WBLS. The on-vehicle backup positioning subsystem BLS collects beside-track beacon information and sends the beacon ID to the indoor backup positioning subsystem WBLS. The indoor backup positioning subsystem WBLS calculates the occupancy status of the secondary detection section SDD according to the beacon ID and sends it to the interlocking subsystem.

[0007] As a preferred technical solution, the indoor backup positioning subsystem WBLS is installed in the indoor computer room.

[0008] As a preferred technical solution, the secondary detection section SDD is bounded by beacon positions, and the section between two beacons is a minimum SDD section.

[0009] As a preferred technical solution, the on-vehicle backup positioning subsystem BLS is connected to the trackside beacon through a beacon antenna.

[0010] According to the second aspect of the present invention, there is provided a method using the active secondary train positioning device, including the following steps:

[0011] Step S1, when the on-vehicle signal system is working properly, the on-vehicle controller CC sends an active train position report to the area controller ZC, and the area controller ZC calculates the train safety envelope; at the same time, the on-vehicle backup positioning subsystem BLS sends the beacon ID to the indoor backup positioning subsystem WBLS, and the indoor backup positioning subsystem WBLS sends the occupancy status of the secondary detection section SDD to the interlocking subsystem.

[0012] Step S2, when both on-vehicle controllers CC fail simultaneously, the indoor backup positioning subsystem WBLS calculates the occupancy status of the secondary detection section SDD according to the beacon ID sent by the on-vehicle backup positioning subsystem BLS, and sends this occupancy status to the interlocking subsystem.

[0013] As a preferred technical solution, in step S1, the indoor backup positioning subsystem WBLS provides the occupancy status of the SDD to the interlocking subsystem as a degraded backup.

[0014] As a preferred technical solution, in step S2, the SDD status covered by the beacons before and after the beacon ID is set to the occupied status.

[0015] As a preferred technical solution, in step S2, the interlocking subsystem sends the occupancy status of the SDD to the area controller ZC, and the area controller ZC calculates the safety envelope according to the occupancy status of the SDD.

[0016] As a preferred technical solution, the safety envelope is extended to the boundary of the occupied SDD plus a safety value.

[0017] As a preferred technical solution, the safety value is the distance from the beacon antenna of the on-vehicle backup positioning subsystem BLS to the vehicle end.

[0018] According to the third 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.

[0019] According to a fourth aspect of the present invention, there is provided a computer-readable storage medium having stored thereon a computer program, which when executed by a processor implements the method described above.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1) The present invention can reduce passive secondary train positioning devices such as axle counters or track circuits beside the track. By adding on-vehicle BLS devices and reusing beacon positioning, and adding WBLS devices in the indoor machine room, the same functions as passive secondary train positioning devices such as axle counters or track circuits can be achieved.

[0022] 2) The present invention reduces passive secondary train positioning devices such as axle counters or track circuits beside the track, which can reduce the workload of equipment maintenance and the system's life cycle cost.

[0023] 3) The present invention does not change the architecture of the existing CBTC system, is independent of the CBTC system, does not change the functions and logics of the trackside interlocking and ZC, and will not cause compatibility changes. Description of the Drawings

[0024] Figure 1 It is a schematic diagram of the active secondary train positioning device of the present invention;

[0025] Figure 2 It is a schematic diagram when the on-vehicle signal system of the present invention is working properly;

[0026] Figure 3 It is a schematic diagram after the CC failure of the present invention;

[0027] Figure 4 It is a schematic diagram of the train continuing to move forward after the CC failure of the present invention. Detailed Embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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.

[0029] As the redundancy and robustness of vehicle-ground wireless communication are getting higher and higher, in order to streamline the indoor and outdoor equipment of the signal system as much as possible, through the active secondary train positioning technology of the present invention, the existing trackside beacons and the distances between them can be used to divide a track section. The active secondary train positioning equipment installed on the train reads the beacon ID to locate the train and sends it to the trackside system through vehicle-ground wireless communication. When the on-vehicle main system loses positioning or crashes due to a fault, the trackside can still obtain the train position, replacing the role of the traditional track circuit or axle counter, achieving the same effect, and can greatly reduce the construction cost and subsequent maintenance cost of rail transit.

[0030] The present invention can be used in fixed block systems, quasi-moving block systems, moving block systems, and signal systems in various modes such as CBTC systems, CTCS systems, ETCS systems, PTC systems, ITCS systems, and TACS systems. Therefore, the claims of the present invention are equally applicable to these systems and systems similar to them.

[0031] As Figure 1 As shown, an active secondary train positioning device of the present invention is connected to the trackside beacon and the interlocking subsystem respectively. The device includes an on-vehicle backup positioning subsystem BLS and an indoor backup positioning subsystem WBLS. The on-vehicle backup positioning subsystem BLS collects trackside beacon information and sends the beacon ID to the indoor backup positioning subsystem WBLS. The indoor backup positioning subsystem WBLS calculates the occupancy status of the secondary detection section SDD based on the beacon ID and sends it to the interlocking subsystem.

[0032] At the same time, the method implemented by the present invention through the above device specifically includes:

[0033] When the on-vehicle signal system is working normally, the CC sends an active train position report to the ZC. The ZC calculates the train safety envelope. At the same time, the BLS sends the beacon ID to the WBLS, and the WBLS sends the occupancy status of the secondary detection section (SDD) to the interlocking. The SDD takes the beacon position as the boundary, and the section between two beacons is the smallest SDD section.

[0034] When the on-vehicle signal system fails, that is, both ends of the CC fail simultaneously and cannot provide active train positioning. At this time, the WBLS sets the SDD status covered by the beacons before and after this beacon ID to the occupied status through the beacon ID sent by the BLS, and sends this occupied status to the interlocking to provide secondary train positioning to the trackside system. The subsequent system logic is the same as the principle of using axle counters or track circuits to judge the SDD status after the on-vehicle failure degradation of the existing CBTC system, that is, after the interlocking obtains the SDD occupancy status, it performs corresponding logical operations and sends them to the ZC for train safety envelope calculation.

[0035] The present invention will be described in detail by taking the example of a degradation mode caused by large - area failures of on - vehicle and track - side equipment:

[0036] As Figure 2 shown, under normal circumstances, the CC works normally, sends the train position to the track - side ZC, the ZC calculates the train safety envelope, the BLS also works normally at the same time, and the WBLS provides the occupancy status of the SDD to the interlocking as a degradation backup;

[0037] As Figure 3 shown, after the CC fails, the ZC cannot obtain the active train positioning and needs to expand the safety envelope. At this time, the BLS reads the beacon ID3. After the WBLS receives the beacon ID3, it sets the sections where SDD2 and SDD3 are located as occupied, sets SDD1, 4, and 5 as clear, and sends them to the interlocking. The interlocking then sends them to the ZC. The ZC expands the safety envelope to the boundary of the occupied SDD plus a safety value (the distance from the BLS antenna to the end of the vehicle) according to the occupancy status of the SDD.

[0038] As Figure 4 shown, as the train continues to move forward, after the BLS reads the beacon ID4, it sends the beacon ID4 to the WBLS. The WBLS sets the sections where SDD3 and SDD4 are located as occupied. After the CC fails, the ZC cannot obtain the active train positioning and needs to expand the safety envelope. At this time, the BLS reads the beacon ID3. After the WBLS receives the beacon ID3, it sets the sections where SDD2 and SDD3 are located as occupied, SDD1, 2, and 5 as clear, and sends them to the interlocking. The interlocking then sends them to the ZC, and sends them to the interlocking, and the interlocking then sends them to the ZC. The ZC updates the safety envelope range accordingly.

[0039] An embodiment of the present invention also provides an electronic device including a central processing unit (CPU), which can execute 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 through a bus. An input / output (I / O) interface is also connected to the bus.

[0040] 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.

[0041] The processing unit executes the various methods and processes described above, such as the method of the present invention. For example, in some embodiments, the method of the present invention may be implemented as a computer software program tangibly embodied 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 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 the method of the present invention described above may be performed. Alternatively, in other embodiments, the CPU may be configured to execute the method of the present invention by any other suitable means (e.g., by means of firmware).

[0042] The functions described above herein may be performed at least in part by one or more hardware logic components. By way of example and not 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), system on a chip (SOCs), complex programmable logic devices (CPLDs), and the like.

[0043] The program code for implementing the method of the present invention may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus such that the program codes, when executed by the processor or controller, cause the functions / operations specified in the flowchart and / or block diagram to be implemented. The program code may be executed entirely on the machine, partly on the machine, as a stand-alone software package partly on the machine and partly on a remote machine, or entirely on the remote machine or server.

[0044] In the context of the present invention, a machine-readable medium may 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. 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, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, 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 disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0045] As described above, it is only the specific implementation manner 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. An active secondary train positioning device, which is respectively connected to a trackside beacon and an interlocking subsystem, is characterized in that The device includes an on-vehicle backup location subsystem BLS and an indoor backup location subsystem WBLS. The on-vehicle backup location subsystem BLS collects wayside beacon information and sends the beacon ID to the indoor backup location subsystem WBLS. The indoor backup location subsystem WBLS calculates the occupancy status of the secondary detection section SDD based on the beacon ID and sends it to the interlocking subsystem.

2. The active secondary train positioning device according to claim 1, characterized in that, The indoor backup location subsystem WBLS is installed in the indoor machine room.

3. The active secondary train positioning device according to claim 1, wherein The secondary detection section SDD takes the beacon position as the boundary, and the section between two beacons is a minimum SDD section.

4. The active secondary train positioning device according to claim 1, wherein The on-vehicle backup location subsystem BLS is connected to the wayside beacon through a beacon antenna.

5. A method using the active secondary train positioning device described in claim 1, characterized in that, It includes the following steps: Step S1, when the on-vehicle signal system is working normally, the on-vehicle controller CC sends an active train position report to the zone controller ZC, and the zone controller ZC calculates the train safety envelope; at the same time, the on-vehicle backup location subsystem BLS sends the beacon ID to the indoor backup location subsystem WBLS, and the indoor backup location subsystem WBLS sends the occupancy status of the secondary detection section SDD to the interlocking subsystem. Step S2, when both on-vehicle controllers CC fail simultaneously, the indoor backup location subsystem WBLS calculates the occupancy status of the secondary detection section SDD based on the beacon ID sent by the on-vehicle backup location subsystem BLS and sends this occupancy status to the interlocking subsystem.

6. The method according to claim 5, wherein In step S1, the indoor backup location subsystem WBLS provides the SDD occupancy status to the interlocking subsystem as a degraded backup.

7. The method according to claim 5, wherein In step S2, the SDD status covered by the beacons before and after the beacon ID is set to the occupied status.

8. The method according to claim 5, wherein In step S2, the interlocking subsystem sends the occupancy status of the SDD to the zone controller ZC, and the zone controller ZC calculates the safety envelope based on the occupancy status of the SDD.

9. The method according to claim 8, wherein The safety envelope extends to the boundary of the occupied SDD plus a safety value.

10. The method according to claim 9, wherein The safety value is the distance from the beacon antenna of the on-vehicle backup location subsystem BLS to the vehicle end.

11. 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 described in any one of claims 5 to 10.

12. 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 described in any one of claims 5 to 10.

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