Method, device and medium for CBTC system to evacuate degraded train

Abstract

The present application relates to a kind of CBTC system to the method, equipment and medium of evacuation protection of degraded train, the method is first by regional controller ZC sends evacuation protection area ID to computer interlocking system CI;Then the CI is controlled to the protection switch and protection signal machine mapped by evacuation protection area ID, switch in evacuation protection area is locked to current position, switch in the direction of evacuation protection area outside is turned to the position not leading to evacuation protection area and is locked, and the signal machine related to evacuation protection area is set to forbidden state.Compared with prior art, the present application has more safe and more efficient and the like advantages.

Description

Technical Field

[0001] This invention relates to train signal control systems, and more particularly to a method, device, and medium for degraded train evacuation protection using a CBTC system. Background Technology

[0002] With technological advancements and increased automation in signaling systems, more and more cities are adopting GOA4-level fully automated driverless CBTC systems for metro systems, hereinafter referred to as driverless metro systems. In the evacuation scenarios of driverless metro systems, before a train is forced to stop in a section and passengers need to disembark and enter the evacuation platform, the zone controller (ZC) automatically generates a designated protection zone. Trains stationary within the zone cannot start or run, and trains stationary outside the zone cannot start or enter the protection zone. Trains currently running within the zone will brake to a stop, and the movement authorization for trains moving towards the protection zone from outside the zone will be reduced to the boundary of the protection zone. This method of automatically generating evacuation protection zones by the ZC ensures the safety of CBTC trains within and outside the evacuation zone when passengers disembark and enter the evacuation platform. However, the above methods are not suitable for non-CBTC trains within and outside the evacuation area, such as BM-type backup trains, RM trains, and signal cut-off trains that have lost train-to-ground wireless communication. These degraded trains only have point-type ATP protection, or speed-limited protection, or no ATP protection. Furthermore, these degraded trains may run in mixed scenarios with CBTC trains. Currently, the protection of degraded trains in evacuation scenarios still requires manual intervention. The central operator needs to manually set up protection through other means. However, evacuations often occur in emergencies, and it is usually necessary to make the right judgment and choice in a short period of time. If protection is carried out manually, it will take a long time and is prone to oversights, resulting in low efficiency and certain risks.

[0003] A search of Chinese Patent Publication No. CN115447642A reveals an automatic protection method, device, and medium for evacuation in rail transit sections. Specifically, the method discloses that after a passenger activates the emergency handle, the onboard VOBC automatically sends an emergency evacuation request to the trackside area controller ZC. The trackside area controller ZC establishes an evacuation protection zone based on the location of the evacuating train, controls all CBTC trains within the evacuation protection zone to brake and stop, and prohibits CBTC trains outside the evacuation protection zone from entering the activated evacuation protection zone. This patent mainly relates to the protection of CBTC mode trains by automatic evacuation, but does not cover the protection technology for degraded mode trains by automatic evacuation. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a safer and more efficient CBTC system for degraded train evacuation protection, including methods, equipment, and media.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] According to a first aspect of the present invention, a method for degraded train evacuation protection in a CBTC system is provided. The method first sends an evacuation protection area ID to a computer interlocking system (CI) via an area controller (ZC). Then, the CI controls the protection turnouts and protection signals mapped to the evacuation protection area ID, locks the turnouts within the evacuation protection area to their current positions, turns the turnouts outside the evacuation protection area that lead to the evacuation protection area to positions that do not lead to the evacuation protection area and locks them, and sets the signals related to the evacuation protection area to a prohibited state.

[0007] As a preferred technical solution, the ZC automatically generates the corresponding evacuation protection zone based on the triggered evacuation event; at the same time, the train accepts the movement authorization point calculated by the ZC based on the range of the evacuation protection zone.

[0008] As a preferred technical solution, evacuation protection area information is added to the ZC and CI interfaces.

[0009] As a preferred technical solution, the CI pre-defines the protective turnout and signal information mapped to each evacuation protection zone ID.

[0010] As a preferred technical solution, the protective turnouts and signals mapped to the evacuation protection area ID in the CI are configured with data according to the characteristics of different evacuations and protection requirements.

[0011] As a preferred technical solution, the CI finds the corresponding turnout based on the preset mapping relationship between the evacuation protection area ID and the protection turnout.

[0012] As a preferred technical solution, the CI finds the corresponding signal machine based on the preset mapping relationship between the evacuation protection area ID and the protection signal machine.

[0013] As a preferred technical solution, after receiving the evacuation protection zone ID, the CI closes the signals corresponding to the evacuation protection zone and does not allow the processing of related routes originating from these signals.

[0014] As a preferred technical solution, after receiving the evacuation protection zone ID, the CI, under the premise of checking that there are no locked, occupied or other CI constraints, will protect the turnouts outside the evacuation protection zone that can lead to the evacuation protection zone to a position that does not lead to the evacuation protection zone.

[0015] As a preferred technical solution, the downgraded train operates according to the display of the protection signal and stops in front of the closed signal. Downgraded trains outside the evacuation protection area are not allowed to enter the evacuation protection area. Downgraded trains within the evacuation protection area stop in front of the terminal prohibition signal on this route or stop immediately according to the instructions of the central operator.

[0016] According to a second aspect of the present invention, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the program to implement the method described thereon.

[0017] According to a third aspect of the present invention, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the method described thereon.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1) This invention provides protection for degraded trains during evacuation. The protective switches and signals can be flexibly configured according to different evacuation scenarios and needs, providing a new, safer, and more efficient protection method for degraded trains in evacuation scenarios.

[0020] 2) Compared to the manual setting of evacuation protection for downgraded vehicles by the central operator, the system protection adopted in this invention has higher security.

[0021] 3) Compared to the manual setting of evacuation protection for downgraded vehicles by a central operator, the system protection adopted in this invention requires less time and is more efficient;

[0022] 4) Compared to the manual setting of evacuation protection for downgraded vehicles by the central operator, the system protection adopted in this invention reduces the workload of the central operator;

[0023] 5) This invention can be flexibly configured according to different evacuation and protection areas, and can be adapted to stations and sections with different track topologies;

[0024] 6) This invention does not require additional hardware; it only requires adding interface information for the evacuation protection area to the ZC-CI interface and configuring the data. It is simple to implement.

[0025] 7) Since this invention is based on the CBTC system, it can be applied in typical CBTC architectures, and has a wide range of applications. Attached Figure Description

[0026] Figure 1 This is a flowchart of the method of the present invention;

[0027] Figure 2 This is a schematic diagram illustrating an embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of an embodiment of the present invention, Example 2; Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0030] The method of the present invention comprises the following steps:

[0031] 1) This method is based on the fully automated driverless CBTC system for subways;

[0032] 2) During the operation of the subway driverless system, an event such as the train being forced to stop in a section and the doors unlocking may trigger the system to automatically evacuate.

[0033] 3) ZC automatically activates the evacuation and protection zone;

[0034] 4) Evacuation protection area information has been added to the ZC and interlocking CI interfaces;

[0035] 5) CI pre-sets the protection turnout and signal information mapped to each evacuation protection zone ID. The protection turnout and signal mapped to the evacuation protection zone ID can be configured according to the characteristics and protection requirements of different evacuations.

[0036] 6) ZC sends the ID corresponding to the evacuation protection area to CI;

[0037] 7) After receiving the evacuation protection zone ID, CI shuts down the corresponding mapping signals and does not allow related routes originating from these signals;

[0038] 8) After receiving the evacuation protection zone ID, the CI, provided that there are no locked / occupied or other CI constraints, will protect the switches outside the evacuation protection zone that lead to the evacuation protection zone to a position that does not lead to the evacuation protection zone; the CI will lock the switches within the corresponding evacuation protection zone to the current position; these switches can be preset according to the operational evacuation principles.

[0039] 9) Protective turnouts ensure that downgraded trains outside the evacuation protection zone will not enter the evacuation protection zone; downgraded trains inside and outside the evacuation protection zone must not cross the prohibition signal according to the signal display.

[0040] 10) The central operator organizes the evacuation according to the specific evacuation scenario. Specific Implementation

[0042] like Figure 1 As shown, the control flow of this method includes the following specific steps:

[0043] Step 1: During the normal operation of the CBTC metro driverless system line, an event triggers an evacuation, such as the unlocking of the train doors of a train that has been forced to stop in the section being activated to the unlock position by passengers, and passengers requesting to disembark and evacuate through the evacuation platform.

[0044] Step 2: ZC generates the corresponding evacuation protection zone based on the triggered evacuation event. The protection zone has the ID X in the system. The CBTC mode train will accept the movement authorization point calculated by ZC based on the range of the evacuation protection zone.

[0045] Step 3: ZC sends the protected zone ID to CI;

[0046] Step 4: CI locates the corresponding turnout based on the preset mapping relationship between the protection zone ID and the protection turnout; at the same time, CI locates the corresponding signal based on the preset mapping relationship between the protection zone ID and the protection signal.

[0047] Step 5: CI locks the turnouts within the corresponding protection area to their current positions; turns the protective turnouts outside the corresponding protection area to positions that do not lead to the protection area and locks them; at the same time, CI closes the corresponding protective signals and sets them to a prohibited state, and does not allow routes to begin with these protective signals.

[0048] Step Six: Ensure that the turnouts within the evacuation protection area are locked and do not rotate; turnouts outside the evacuation protection area do not lead to the protection area; downgraded trains proceed according to the display of the protection signal and stop in front of the closed signal; downgraded trains outside the evacuation protection area are not allowed to enter the evacuation protection area; downgraded trains within the evacuation protection area must stop in front of the terminal prohibition signal on this route or stop immediately according to the instructions of the central operator.

[0049] Step 7: The central operator remotely organizes passengers to disembark and evacuate.

[0050] The implementation examples are illustrated using two different station configurations.

[0051] 1) The connectivity of the up and down tunnels within the section, such as... Figure 2 As shown in Table 1, where Table 1 shows the mapping relationship between the protected area and the signal / turnout in CI.

[0052] Table 1

[0053]

[0054] When the up and down tunnels are connected in a section, the evacuation protection zone needs to consider the situation where passengers enter the opposite tunnel during evacuation. Therefore, the protective switches outside the evacuation protection zone also need to consider the protection of the opposite tunnel, and similarly, the protective signals also need to consider the protection of the opposite tunnel. Train 1 is in CBTC mode. When train 1 triggers evacuation in the up section, ZC activates evacuation protection zone 1 ( Figure 2 Within the dashed box area, Train 2 is a CBTC mode train within the evacuation protection area. In this case, Train 2 will immediately reclaim its movement authorization point and stop with emergency braking. Train 3, outside the protection area, is a CBTC mode train traveling towards evacuation protection area 1. In this case, Train 3 will immediately reclaim its movement authorization point and stop outside evacuation protection area 1.

[0055] ZC sends evacuation protection zone 1 to CI. CI, based on the mapping relationship between CI's protection zone and turnouts / signals, maps all turnouts (including those in the mapping table within the protection zone) to the turnouts within the protection zone. Figure 2 All switches within the dotted box are locked in their current positions to prevent accidental rotation and injury to passengers during evacuation. Switches in the mapping table outside the evacuation protection zone are turned to positions that do not lead to the protection zone. Switches D10 and D11 are turned to their designated positions and locked. Switch D9, since it does not lead to the evacuation protection zone, requires no action. All signals corresponding to the mapping table are closed, and routes originating from these signals cannot be processed. Train 4 is a downgraded train. Signal X20 ahead of downgraded train 4 is closed and becomes a prohibitory signal. Downgraded train 4 stops ahead of X20 and cannot enter the evacuation protection zone 1.

[0056] 2) In cases where the up and down tunnels within the same section are not connected, such as... Figure 3 As shown in Table 2, where Table 2 shows the mapping relationship between the protection zone and the signal / turnout in CI.

[0057] Table 2

[0058]

[0059] When the up and down tunnels in the section are not connected, there is no need to consider the situation of passengers entering the opposite tunnel during evacuation. Therefore, the protective switches and protective signals outside the evacuation protection zone do not need to consider the protection of the opposite tunnel. Train 1 is in CBTC mode. When train 1 triggers evacuation in the up section, ZC activates evacuation protection zone 2. Figure 3 Within the dashed box area, Train 2 is a CBTC mode train operating in the downlink section. Since the uplink and downlink tunnels are not connected, passengers cannot reach the downlink section during evacuation. At this time, the operation of Train 2 will not be affected. Train 3 outside the protected area is a CBTC mode train, operating in the direction of evacuation protected area 2. At this time, Train 3 will immediately retrieve its movement authorization point and stop outside the evacuation protected area 2.

[0060] ZC sends the evacuation protection zone 2 to CI. CI, based on the mapping relationship between the protection zone and switches / signals, turns the switches in the mapping table outside the evacuation protection zone to positions that do not lead to the protection zone. Switch D2 is turned to its designated position and locked. Switches D1 and D3, since they do not lead to the evacuation protection zone, do not require processing. All signals in the mapping table are closed, and routes originating from these signals cannot be processed. The protection signals in the mapping table do not include downlink tunnel signals. Train 4 is a degraded train; signal X14 ahead of degraded train 4 is closed and becomes a prohibitory signal. Degraded train 4 stops ahead of X14 and cannot enter the evacuation protection zone 2.

[0061] As can be seen from the above implementation examples for two different station types, this method, based on the original evacuation protection zone protection CBTC mode trains, locks the current position of all switches within the protection zone; for switches outside the protection zone leading to the protection zone, under the premise of no CI condition constraints, the switch positions are turned to positions that do not lead to the protection zone and locked; and protection is also provided by closing the corresponding signals for degraded trains, so that degraded trains that have not yet passed the protection signal cannot approach or enter the evacuation protection zone without violating the prohibition signal. This provides an effective means for the central operator to protect degraded trains during evacuation, improving the efficiency and safety of evacuation organization.

[0062] The above is an introduction to the method embodiments. The following embodiments using electronic devices and storage media will further illustrate the solution of the present invention.

[0063] The electronic device of this invention includes a central processing unit (CPU), which can perform various appropriate actions and processes according to computer program instructions stored in read-only memory (ROM) or loaded from a storage unit into random access memory (RAM). The RAM may also store various programs and data required for device operation. The CPU, ROM, and RAM are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus.

[0064] Multiple components in the device are connected to the I / O interface, including: input units such as keyboards and mice; output units such as various types of displays and speakers; storage units such as disks and optical discs; and communication units such as network interface cards (NICs), modems, and wireless transceivers. The communication unit allows the device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0065] The processing unit performs the various methods and processes described above, such as the methods of the present invention. For example, in some embodiments, the methods of the present invention may be implemented as computer software programs 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 ROM and / or a communication unit. When the computer program is loaded into RAM and executed by the CPU, one or more steps of the methods of the present invention described above may be performed. Alternatively, in other embodiments, the CPU may be configured to execute the methods of the present invention by any other suitable means (e.g., by means of firmware).

[0066] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SoCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0067] The program code used to implement the methods of the present invention can be written in any combination of one or more programming languages. This program code can be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing device, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code can be executed entirely on the machine, partially on the machine, as a standalone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0068] In the context of this invention, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media can include, but are 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 machine-readable storage media 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 fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0069] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for degraded train evacuation protection using a CBTC system, characterized in that, The method first sends the evacuation protection zone ID to the computer interlocking system CI through the area controller ZC; then the CI controls the protection turnouts and protection signals mapped to the evacuation protection zone ID, locks the turnouts in the evacuation protection zone to the current position, turns the turnouts outside the evacuation protection zone that lead to the evacuation protection zone to a position that does not lead to the evacuation protection zone and locks them, and sets the signals related to the evacuation protection zone to the prohibited state. The ZC and CI interfaces are enhanced with evacuation protection zone information; the CI is pre-defined with protection turnout and signal information mapped to each evacuation protection zone ID. The CI finds the corresponding turnout based on the preset mapping relationship between the evacuation protection area ID and the protection turnout; After receiving the evacuation protection zone ID, the CI, provided that there are no locked, occupied, or other CI constraints, will protect the turnouts outside the evacuation protection zone that lead to the evacuation protection zone to a position that does not lead to the evacuation protection zone.

2. The method for degraded train evacuation protection using a CBTC system according to claim 1, characterized in that, The ZC automatically generates the corresponding evacuation protection zone based on the triggered evacuation event; at the same time, the train accepts the movement authorization point calculated by the ZC based on the range of the evacuation protection zone.

3. A method for degraded train evacuation protection using a CBTC system according to claim 1, characterized in that, The protective turnouts and signals mapped to the evacuation protection zone ID in the CI are configured with data according to the characteristics of different evacuations and protection requirements.

4. A method for degraded train evacuation protection using a CBTC system according to claim 1, characterized in that, The CI finds the corresponding signal based on the preset mapping relationship between the evacuation protection area ID and the protection signal.

5. A method for degraded train evacuation protection using a CBTC system according to claim 1, characterized in that, After receiving the evacuation protection zone ID, the CI closes the signals corresponding to the evacuation protection zone and does not allow the processing of related routes originating from these signals.

6. A method for degraded train evacuation protection using a CBTC system according to claim 1, characterized in that, The downgraded trains proceed according to the display of the protection signal and stop in front of the closed signal. Downgraded trains outside the evacuation protection zone are not allowed to enter the evacuation protection zone. Downgraded trains within the evacuation protection zone must stop in front of the terminal prohibition signal on the same route or stop immediately according to the instructions of the central operator.

7. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the program, it implements the method as described in any one of claims 1 to 6.

8. 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 as described in any one of claims 1 to 6.

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