A method, device and medium for detecting and preventing unintended movement of a train

Abstract

The present application relates to a kind of train unexpected movement detection and protection method, equipment and medium, the method is used for TACS system in the case where train unexpected movement occurs, timely detection is carried out to train and corresponding safety protection is provided, the method includes: step S1, train-mounted controller CC demarcates after train unexpected movement, all possible occupied area Z1;Step S2, train-mounted controller CC calculates the turnout set P1 covered by area Z1, and applies the position information of P1 to trackside resource manager WRC;Step S3, the turnout position information of turnout set P1 is sent to train-mounted controller CC by trackside resource manager WRC;Step S4, train-mounted controller CC judges whether train exists unexpected behavior, if yes, execute step S5, otherwise return to step S1;Step S5, train-mounted controller CC and trackside resource manager WRC carry out safety protection to train.Compared with prior art, the present application has the advantages of high safety, high availability and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to a rail transit signal system, in particular to a train unexpected movement detection and protection method, device and medium for a TACS system. BACKGROUND

[0002] At present, the train autonomous circumambulate system (TACS) based on train-to-train communication is gradually increasing in urban rail transit signal systems. Compared with the centralized trackside resource management mode relying on interlocking to handle routes in the traditional CBTC signal system, the TACS system adopts a distributed resource management mode of multiple train parallel autonomous calculation. In the TACS system, the train management subsystem autonomously plans the demand for trackside resources based on the train operation tasks issued by the dispatching management subsystem, and applies for resources to the trackside resource manager in combination with the train operation state and the planned operation curve during the process of controlling the automatic operation of the train, obtains the allocated resources for use and releases the resources. Benefiting from the refined management of resources, this on-demand application and on-demand use of resource management mode enables the TACS system to more efficiently utilize the resources on the line in the case of high traffic density, so as to improve the operation efficiency of the system.

[0003] Under normal circumstances, each control object in the TACS system operates under the premise of complying with its commitment. Each control object can be "constrained" within the committed area without violating the commitment, and the system can ensure the safe operation of the control object. However, from the perspective of reliability, the control object of the system cannot always guarantee to comply with its commitment. Since the violation behavior itself is unpredictable (for example: driver runs a red light, train backs up, EB guarantee rate cannot be guaranteed, switch is not tightly closed, etc.), when the control object exhibits unexpected behavior, if the system does not immediately take protective measures, it may lead to a safety accident.

[0004] After searching, Chinese patent publication number CN117184181A discloses a method, device and medium for processing artificial vehicle multi-element positioning information. The method calculates the accurate positioning information of the artificial vehicle according to the multi-element positioning elements, and sends it to the automatic train monitoring system (ATS) to assist the dispatching system in obtaining the real-time moving position of the train when the trackside train controller (WTC) controls the train. The multi-element positioning elements include repositioning, reeducation, expected movement authorization and unexpected movement authorization. However, the existing patent identifies unexpected movement behavior by reading beacons. This method has the problems of low real-time detection of unexpected movement behavior, inability to detect different types of train unexpected movement, and poor system safety. SUMMARY

[0005] The purpose of the present application is to provide a train unexpected movement detection and protection method, device and medium for TACS system with high safety and high availability to overcome the defects of the prior art.

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

[0007] According to the first aspect of the present application, a train unexpected movement detection and protection method is provided, which is used for the TACS system to detect and provide corresponding safety protection in time when the train unexpected movement occurs, and the method comprises the following steps:

[0008] Step S1, the vehicle-mounted controller CC delimits the area Z1 that may be occupied after the train unexpected movement occurs;

[0009] Step S2, the vehicle-mounted controller CC calculates the turnout set P1 covered by the area Z1, and applies for the position information of P1 to the trackside resource manager WRC;

[0010] Step S3, the trackside resource manager WRC sends the turnout position information of the turnout set P1 to the vehicle-mounted controller CC;

[0011] Step S4, the vehicle-mounted controller CC judges whether the train has unexpected behavior, if yes, step S5 is executed, otherwise, step S1 is returned;

[0012] Step S5, the vehicle-mounted controller CC and the trackside resource manager WRC protect the train.

[0013] As a preferred technical solution, the delimitation of the area Z1 in step S1 is specifically:

[0014] The vehicle-mounted controller CC delimits the area Z1 that may be occupied after the train unexpected movement occurs according to the train positioning information and under the most unfavorable condition.

[0015] As a preferred technical solution, in step S4, the vehicle-mounted controller CC calculates whether the train has unexpected behavior based on the cumulative displacement of the train.

[0016] As a preferred technical solution, in step S4, the unexpected behavior includes whether the cumulative displacement direction conflicts with the safety guarantee direction, whether the cumulative displacement per unit time exceeds the maximum allowable speed, and whether the train positioning exceeds the safety protection envelope.

[0017] As a preferred technical solution, in step S5, the vehicle-mounted controller CC implements emergency braking on the train and closes the permission signal applied by the train.

[0018] As a preferred technical solution, in the step S5, the vehicle-mounted controller CC calculates a region Z2 possibly occupied by the train after the unintended movement according to the turnout positions of the turnout set S1.

[0019] As a preferred technical solution, the vehicle-mounted controller CC reports the range of the region Z2 to the wayside resource manager WRC.

[0020] As a preferred technical solution, the wayside resource manager WRC guards the region Z2 and prohibits the system authorization of the region.

[0021] According to a second aspect of the present application, an electronic device is provided, comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the program to realize the method.

[0022] According to a third aspect of the present application, a computer readable storage medium is provided, which stores a computer program, and the program is executed by a processor to realize the method.

[0023] Compared with the prior art, the present application has the following advantages:

[0024] 1) The present application designs a timely detection method for the TACS system in the case of train unintended movement and provides corresponding safety protection, thereby improving the system safety;

[0025] 2) The present application controls the protection range under failure by checking the turnout position, thereby improving the system availability;

[0026] 3) The present application classifies the train unintended movement detection method, identifies different types of train unintended movement, and improves the system safety. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 Figure 1 is a TACS system architecture diagram of the present application;

[0028] Figure 2 Figure 2 is a specific flowchart of the train unintended movement passive detection and protection method of the present application;

[0029] Figure 3 Figure 3a is a diagram of the train unintended movement passive detection and protection method of the TACS system of the present application;

[0030] Figure 4 Figure 3b is a diagram of the train unintended movement passive detection and protection method of the TACS system of the present application;

[0031] Figure 5 Figure 3c is a diagram of the train unintended movement passive detection and protection method of the TACS system of the present application. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort should fall within the protection scope of the present application.

[0033] As shown in the accompanying drawings, Figure 1 The train autonomous running system based on vehicle-to-vehicle communication mainly includes a wayside resource manager WRC, a wayside train manager WTC, an objective controller OC, an automatic train supervision system ATS, an on-board controller CC, a backup positioning system BLS, a beacon, a signal S, and an axle counting detection head AC. The ATS subsystem is responsible for supervising and controlling the operation of the train, and has functions of train tracking operation, alarm and event reporting, operation adjustment, operation control, etc. The WRC is responsible for line resource allocation and recovery, train sequence management, signal and turnout control, etc. The WTC is mainly responsible for temporary speed limit processing, and manages and tracks the faulty train to take over the faulty train to apply for and release resources. The OC mainly realizes the state acquisition and driving of wayside equipment. The CC applies for and releases line resources according to the plan, actively controls the train, and realizes the train safety protection function and the train automatic driving function. The signal is used to prompt the driver that the current train should be passed or prohibited. The beacon is responsible for providing the position information of the current position in combination with the line map. The BLS mainly provides the corresponding train ID and train position information to the wayside train controller according to the acquired beacon information, so as to realize the position tracking of the degraded train. The BLS is arranged on the train to complete the operation of the degraded train in cooperation with the WTC.

[0034] As shown in the accompanying drawings, Figure 2 The passive detection and protection method of the train unexpected movement of the TACS system of the present application is characterized in that it comprises:

[0035] Step S1, the on-board controller CC estimates the region Z1 possibly occupied by the train after the train unexpected movement under the most unfavorable condition according to the train positioning information;

[0036] Step S2, the on-board controller CC calculates the turnout set P1 covered by the region Z1, and applies for the position information of P1 to the wayside resource manager WRC;

[0037] Step S3, the wayside resource manager WRC sends the turnout position information of the turnout set P1 to the on-board controller CC;

[0038] Step S4, the vehicle-mounted controller CC calculates whether the train has unexpected behavior based on the train cumulative displacement: whether the cumulative displacement direction conflicts with the safety guarantee direction, whether the cumulative displacement per unit time exceeds the maximum allowable speed, and whether the train positioning exceeds the safety protection envelope, if so, go to step S5, if not, go to S1;

[0039] Step S5, the vehicle-mounted controller CC implements emergency braking on the train, and closes the permission signal applied by the train;

[0040] Step S6, the vehicle-mounted controller CC calculates the area Z2 that the train may occupy after unexpected movement according to the turnout position of the turnout set S1, and reports the range of the area Z2 to the wayside resource manager WRC;

[0041] Step S7, the wayside resource manager WRC protects the area Z2, prohibits system authorization of the area, and goes to step S1.

[0042] The passive detection and protection method of the train unexpected movement of the TACS system can provide a high safety and high availability way, so that the unexpected behavior of the control object can be detected in time and appropriate safety protection measures can be implemented.

[0043] As shown in the accompanying Figure 3 The train CC calculates all possible occupied areas Z1 of the train after unexpected movement in the worst case, identifies all turnout sets P1 in the area Z1, and applies for and obtains the turnout position information of P1 from the WRC;

[0044] As shown in the accompanying Figure 4 The train CC detects that the train positioning has crossed the safety protection envelope, and immediately applies emergency braking to the train;

[0045] As shown in the accompanying Figure 5 The train CC calculates the possible area Z2 of the train according to the turnout position information of P1, and reports it to the WRC. The WRC protects the area Z2 according to the report of the train CC, and prohibits the system authorization of the area.

[0046] The above is the introduction of the method embodiment, and the following electronic equipment and storage medium embodiments will further illustrate the scheme of the present application.

[0047] Embodiments of the present application also provide an electronic device including a central processing unit (CPU) that can perform various appropriate actions and processes in accordance with computer program instructions stored in a read-only memory (ROM) or loaded from a storage unit into a random access memory (RAM). Various programs and data required for device operation can also be stored in the RAM. The CPU, ROM, and RAM are connected to each other by a bus. An input / output (I / O) interface is also connected to the bus.

[0048] Various components in the device are connected to the I / O interface, including: an input unit such as a keyboard, mouse, etc.; an output unit such as various types of displays, speakers, etc.; a storage unit such as a magnetic disk, optical disk, etc.; and a communication unit such as a network card, modem, 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.

[0049] The processing unit performs the various methods and processes described above, such as the methods of the present application. For example, in some embodiments, the methods of the present application can be implemented as a computer software program tangibly embodied 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 on 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 methods of the present application described above can be performed. Alternatively, in other embodiments, the CPU can be configured to perform the methods of the present application by any other appropriate means, such as by means of firmware.

[0050] The functionality described above in this document can be performed, at least in part, by one or more hardware logic components. For example, and without limitation, example 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), System-on-a-chip systems (SOCs), Complex Programmable Logic Devices (CPLDs), etc.

[0051] Program code to implement methods of the present application can be written in any combination of one or more programming languages. The program code can be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the program code, when executed by the processor or controller, implements the functions / acts specified in the flowcharts and / or block diagrams. The program code can be executed entirely on a machine, partially on a machine, partially on a machine and partially on a remote machine or entirely on a remote machine or server.

[0052] In the context of the present application, 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. Machine-readable storage media can include, without limitation, 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 can include one or more lines of electrical wire, 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 disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0053] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for detecting and preventing unexpected train movement, characterized in that: The method is used by the TACS system to promptly detect the train and provide corresponding safety protection when the train moves unexpectedly. The method includes: Step S1: The onboard controller CC demarcates all possible zones Z1 that may be occupied by the train after the train moves unexpectedly; Step S2: The onboard controller CC calculates the set of switches P1 covered by the area Z1 and requests the location information of P1 from the trackside resource manager WRC. Step S3: The trackside resource manager WRC sends the turnout position information of the turnout set P1 to the onboard controller CC; Step S4: The onboard controller CC determines whether the train has any unexpected behavior. If yes, it goes to step S5; otherwise, it returns to step S1. Step S5: The onboard controller CC and the trackside resource manager WRC provide safety protection for the train; In step S5, the onboard controller CC calculates the area Z2 that may be occupied by the train after the unexpected movement based on the switch positions of the switch set P1; the onboard controller CC reports the scope of the area Z2 to the trackside resource manager WRC; the trackside resource manager WRC protects the area Z2 and prohibits system authorization in this area.

2. A method for detecting and preventing unexpected train movement according to claim 1, characterized in that: The demarcation of the area Z1 in step S1 is specifically as follows: Based on the train positioning information, the onboard controller CC estimates all possible areas Z1 that the train may occupy after an unexpected movement in the worst case scenario.

3. A method for detecting and preventing unexpected train movement according to claim 1, characterized in that: In step S4, the onboard controller CC calculates whether the train has unexpected behavior based on the accumulated displacement of the train.

4. A method for detecting and preventing unexpected train movement according to claim 1, characterized in that: The unexpected behaviors in step S4 include whether the cumulative displacement direction conflicts with the safety assurance direction, whether the cumulative displacement per unit time exceeds the maximum allowable speed, and whether the train positioning exceeds the safety protection envelope.

5. The method for detecting and preventing unexpected train movement according to claim 1, characterized in that: In step S5, the onboard controller CC applies emergency braking to the train and turns off the permission signal requested by the train.

6. 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 5 is implemented.

7. 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 5 is implemented.

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