CBTC system based on interval protection and heterogeneous redundancy, and implementation method therefor

Abstract

A CBTC system based on interval protection and heterogeneous redundancy, the system comprising a communication subsystem DCS, and an onboard ATP subsystem MVTP and a trackside ATP interval protection subsystem MWSP, both of which communicate with the communication subsystem DCS, wherein the onboard ATP subsystem MVTP receives movement authorization information from the trackside ATP interval protection subsystem MWSP, and when movement authorization information is unavailable, receives target distance or speed code information to protect train operation safety; and the trackside ATP interval protection subsystem MWSP automatically identifies and uses a corresponding block mode on the basis of information that is sent by the onboard ATP subsystem MVTP, uses the corresponding block mode to perform movement authorization and target distance or speed code calculation, and sends the calculation result to a corresponding train. Compared with the prior art, the CBTC system has advantages such as being capable of providing protection information for a train even after the train is out of position, so as to keep the train operating in an ATP mode. Further provided are an implementation method for a CBTC system based on interval protection and heterogeneous redundancy, and an electronic device and a computer-readable storage medium.

Description

CBTC system based on interval protection and heterogeneous redundancy and its implementation method Technical Field

[0001] The present invention relates to train interval protection of a CBTC system, and in particular to a CBTC system based on interval protection and heterogeneous redundancy and an implementation method thereof. Background Art

[0002] Train separation protection is a crucial function for ensuring safe train operation. To ensure this, trains operating on the same line must maintain a certain distance, which is determined by factors such as train speed, braking distance, and safety protection distance. Blocking, which allows only one train to operate within a specified section, primarily includes fixed, moving, and quasi-moving blocks.

[0003] Existing CBTC systems use active positioning and moving blocks to maintain train intervals. However, this system can cause a train to become dislocated in situations such as slipping or momentarily losing its switch position. In such cases, the trackside area controller cannot obtain the position of the dislocated train, preventing it from continuing to operate in ATP mode. This, in turn, impacts the operation of subsequent trains and significantly reduces overall line efficiency. Current solutions to this problem include adopting a multi-mode train control solution combining BM+CBTC or TBTC+CBTC.

[0004] However, both solutions require configuring another mode of train control system and integrating it with the existing system, which increases the complexity of the system.

[0005] Summary of the Invention

[0006] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and provide a CBTC system based on interval protection and heterogeneous redundancy and its implementation method.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] According to a first aspect of the present invention, a CBTC system based on interval protection and heterogeneous redundancy is provided, the CBTC system comprising a communication subsystem DCS and an onboard ATP subsystem MVTP and a wayside ATP interval protection subsystem MWSP respectively communicating with the communication subsystem DCS;

[0009] The on-board ATP subsystem MVTP receives movement authorization information from the wayside ATP interval protection subsystem MWSP, and when the movement authorization information is not available, receives target distance or speed code information to protect the safe operation of the train; the wayside ATP interval protection subsystem MWSP automatically identifies and adopts the corresponding blocking mode according to the information sent by the on-board ATP subsystem MVTP, and calculates the movement authorization and target distance or speed code in the corresponding blocking mode, and sends the calculation results to the corresponding train.

[0010] As an optimal technical solution, the vehicle-mounted ATP subsystem MVTP is compatible with mobile authorization and speed code modes.

[0011] As a preferred technical solution, the trackside ATP interval protection subsystem MWSP performs adaptive operation of moving block and quasi-moving block modes based on the active positioning state of the train.

[0012] As an optimal technical solution, the mobile authorization is calculated for trains with normal active positioning functions and in ATP mode.

[0013] As an optimal technical solution, the target distance is calculated for trains with abnormal active positioning function and in ATP mode.

[0014] As a preferred technical solution, the speed code is calculated for trains in RM mode.

[0015] As an optimal technical solution, the on-board ATP subsystem MVTP and the trackside ATP interval protection subsystem MWSP are both a set of safety platforms.

[0016] According to a second aspect of the present invention, a method for implementing the CBTC system based on compartment protection and heterogeneous redundancy is provided, which specifically includes the following steps:

[0017] Step S1: The train active positioning function is normal, and the wayside ATP interval protection subsystem MWSP calculates the movement authorization based on the principle of moving block. When the train active positioning function is abnormal and lost, step S2 is executed, otherwise step S1 is executed again;

[0018] Step S2: The trackside ATP interval protection subsystem MWSP calculates the target distance or speed code based on the information of the missing train and executes step S3;

[0019] Step S3: If the out-of-position train is relocated during the operation in the quasi-moving block mode, return to step S1.

[0020] As a preferred technical solution, the movement authorization in step S1 is received by the onboard ATP subsystem MVTP and a safety protection curve is calculated to assist the train operation.

[0021] As a preferred technical solution, the information of the lost train in step S2 includes the section occupancy information of the non-positioning envelope corresponding to the lost train, the permanent or temporary speed limit setting information of the line, the occupancy information of adjacent trains or sections on the line, the status information of the trackside signal equipment and the driving mode information of the train.

[0022] As a preferred technical solution, the trackside signal equipment includes a signal machine, a switch, a platform emergency close button and a platform door.

[0023] As a preferred technical solution, the target distance calculation in step S3 is for trains in ATP mode.

[0024] As a preferred technical solution, the speed code calculation in step S3 is for RM mode trains.

[0025] As a preferred technical solution, the target distance or speed code in step S2 is received by the onboard ATP subsystem MVTP and the speed of the lost train is monitored to assist the train operation.

[0026] According to a third aspect of the present invention, an electronic device is provided, comprising a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the method when executing the program.

[0027] According to a fourth aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the method described above is implemented.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] 1) After a train loses its position, the system of the present invention can still provide ATP protection information to the train based on trackside train occupancy detection, maintaining the train running in ATP mode;

[0030] 2) The heterogeneous redundant implementation system of the interval protection function of the present invention realizes the fusion operation of multiple interval protection modes such as moving block and quasi-moving block on the same safety platform;

[0031] 3) The present invention can realize the adaptation of corresponding blocking modes according to different positioning modes of trains. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a schematic diagram of a train operation when the active train positioning function of the present invention is normal;

[0033] FIG2 is a schematic diagram of a train operation when the active train positioning function of the present invention is abnormal;

[0034] FIG3 is a schematic diagram of the train operation when the train of the present invention obtains repositioning during operation in the quasi-moving block mode;

[0035] FIG4 is a flow chart of the implementation method of the present invention. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0037] While using only the same CBTC system, the present invention fully utilizes two different train positioning detection systems: active train positioning and trackside train detection positioning. It adopts heterogeneous redundancy in the form of moving block and fixed block respectively. It automatically provides the train with corresponding movement authorization or target distance information based on whether the train is positioned. Without increasing the hardware configuration, the system availability is improved through software optimization, ensuring the safety and efficiency of train operation in the event of fault loss.

[0038] As shown in FIG4 , the present invention provides a method for implementing a CBTC system based on interval protection and heterogeneous redundancy, which includes the following steps:

[0039] Step S1: When the train's active positioning function is normal, the trackside ATP interval protection equipment calculates the train movement authorization based on the train's active positioning information and the principle of moving block, and sends it to the corresponding train onboard. The train onboard calculates the safety protection curve based on the received movement authorization and assists the train operation;

[0040] Step S2, when a train loses its position for some reason, the trackside ATP interval protection equipment calculates the target distance (ATP mode) or speed code (RM mode) based on the occupancy information of the section where the non-positioning envelope corresponding to the train is located, the permanent or temporary speed limit setting of the line, the occupancy information of adjacent trains or sections on the line, the status of the trackside signal equipment (signals, switches, platform emergency close buttons, platform doors, etc.), and the driving mode of the train, and sends the speed code to the lost train. The lost train's onboard vehicle monitors the speed of the train based on the received speed code and assists the train operation;

[0041] Step S3: When the lost train is relocated while operating in the quasi-moving block mode, the operation of the train will return to the moving block control mode, which is step S1 of this process.

[0042] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Step S1, as shown in Figure 1, when the active positioning functions of Train 1 and Train 2 are normal, the active positioning information of the trackside MWSP equipment (ATP interval protection equipment) is used to calculate the train movement authorization based on the principle of moving block, and the rear of Train 2 is sent to Train 1 as the end point of the movement authorization. The onboard MVTP equipment of Train 1 calculates the safety protection curve based on the received movement authorization and assists the train operation;

[0044] Step S2, as shown in Figure 2, when the on-board MVTP equipment of train 2 fails and loses its positioning, the trackside MWSP equipment calculates the target distance and speed code based on the section occupancy information (track section 1) where the non-positioning envelope of train 1 is located, the permanent speed limit of the line (80km / h), the occupancy information of the section where train 2 is located (track section 5), and the status of the trackside signal equipment, and sends the speed code of each section to the lost train 1. Train 1 switches to the quasi-moving block mode to control the train: when train 1 is running on track section 1, due to the distance from train 2, MWSP will use the permanent speed limit of 80km / h of track section 1 as the speed code to train 1; when train 1 runs to track section 2, the distance to train 2 is shortened, and MWSP will use the entrance of track section 5 as the target distance protection point, calculate the speed code as 60km / h and send it to train 1. The on-board equipment of train 1 monitors the speed of the train based on the received speed code and assists the train operation.

[0045] Step S3, as shown in FIG3, when the train 1 is relocated during operation in the quasi-moving block mode, the onboard MVTP equipment of the train 1 automatically switches back to the moving block control mode, which is step S1 of this process.

[0046] The above is an introduction to the method embodiment. The following further illustrates the solution of the present invention through a system embodiment.

[0047] The present invention provides a CBTC system based on interval protection and heterogeneous redundancy, which consists of an on-board ATP subsystem MVTP compatible with mobile authorization and speed code modes, a wayside ATP interval protection subsystem MWSP that can adaptively perform mobile block and quasi-mobile block mode operations based on the active positioning status of the train, and a communication subsystem DCS between the train and the wayside. The hardware of the MVTP and MWSP are both a set of security platforms. The MVTP will give priority to the mobile authorization information received from the wayside. When the mobile authorization information is unavailable, the target distance (ATP mode) or speed code information (RM mode) will be considered, and the safe operation of the train will be protected according to the available information received; the MWSP will automatically identify and adopt the corresponding block mode according to the positioning status, driving mode and other information sent by the train, and calculate the mobile authorization (positioned and ATP mode train), target distance (non-positioned and ATP mode train) or speed code (RM mode train) in the corresponding block mode. The calculation results will be sent to the on-board of the corresponding train through train-ground communication.

[0048] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the described module can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0049] The electronic device of the present invention includes 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 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.

[0050] Many components in a device are connected to the I / O interface, including: input units, such as a keyboard and mouse; output units, such as various types of displays and speakers; storage units, such as magnetic disks and optical disks; and communication units, such as network cards, modems, and wireless communication transceivers. The communication unit allows the device to exchange information / data with other devices via computer networks such as the Internet and / or various telecommunication networks.

[0051] The processing unit performs the various methods and processes described above, such as the inventive method. For example, in some embodiments, the inventive method can 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 can be loaded and / or installed on the device via a 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 inventive method described above can be executed. Alternatively, in other embodiments, the CPU can be configured to perform the inventive method by any other appropriate means (e.g., by means of firmware).

[0052] The functions described above herein may be performed, at least in part, by one or more hardware logic components. For example, and 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 chip (SOCs), complex programmable logic devices (CPLDs), and the like.

[0053] The program code for implementing the method of the present invention can be written in any combination of one or more programming languages. Such program code 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 when the program code is executed by the processor or controller, the functions / operations specified in the flow chart and / or block diagram are implemented. The program code can be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0054] 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 apparatus. 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, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of machine-readable storage media may include an electrical connection based on one or more wires, 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), 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.

[0055] 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 such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A CBTC system based on interval protection and heterogeneous redundancy, characterized in that: The CBTC system includes a communication subsystem DCS and a vehicle-mounted ATP subsystem MVTP and a trackside ATP interval protection subsystem MWSP that communicate with the communication subsystem DCS respectively; The on-board ATP subsystem MVTP receives movement authorization information from the trackside ATP interval protection subsystem MWSP, and when the movement authorization information is not available, receives target distance or speed code information to protect the safe operation of the train; the trackside ATP interval protection subsystem MWSP automatically identifies and adopts the corresponding blocking mode according to the information sent by the on-board ATP subsystem MVTP, and calculates the movement authorization and the target distance or speed code in the corresponding blocking mode, and sends the calculation results to the corresponding train.

2. A CBTC system based on compartment protection and heterogeneous redundancy according to claim 1, characterized in that: The vehicle-mounted ATP subsystem MVTP is compatible with mobile authorization and speed code modes.

3. A CBTC system based on compartment protection and heterogeneous redundancy according to claim 1, characterized in that: The trackside ATP interval protection subsystem MWSP performs adaptive operation of moving block and quasi-moving block modes based on the active positioning state of the train.

4. A CBTC system based on compartment protection and heterogeneous redundancy according to claim 1, characterized in that: The movement authorization is calculated for trains with normal active positioning function and in ATP mode.

5. A CBTC system based on compartment protection and heterogeneous redundancy according to claim 1, characterized in that: The target distance is calculated for a train with abnormal active positioning function and in ATP mode.

6. A CBTC system based on compartment protection and heterogeneous redundancy according to claim 1, characterized in that: The speed code is calculated for a train in RM mode.

7. A CBTC system based on compartment protection and heterogeneous redundancy according to claim 1, characterized in that: The on-board ATP subsystem MVTP and the trackside ATP interval protection subsystem MWSP are both a set of safety platforms.

8. A method for implementing the CBTC system based on interval protection and heterogeneous redundancy as claimed in claim 1, characterized in that: The specific steps include: Step S1: The train active positioning function is normal, and the trackside ATP interval protection subsystem MWSP calculates the movement authorization based on the principle of moving block. When the train active positioning function is abnormally lost, step S2 is executed, otherwise step S1 is executed again; Step S2, the trackside ATP interval protection subsystem MWSP calculates the target distance or speed code according to the information of the lost train, and executes step S3; Step S3: If the out-of-position train is relocated during operation in the quasi-moving block mode, return to step S1.

9. The implementation method according to claim 8, characterized in that: The movement authorization in step S1 is received by the on-board ATP subsystem MVTP and the safety protection curve is calculated to assist the train operation.

10. The implementation method according to claim 8, characterized in that: The information of the misplaced train in step S2 includes the section occupancy information of the non-positioning envelope corresponding to the misplaced train, the line permanent or temporary speed limit setting information, the adjacent train or section occupancy information on the line, the status information of the trackside signal equipment and the driving mode information of the train.

11. The implementation method according to claim 10, characterized in that: The trackside signal equipment includes signal machines, switches, platform emergency closing buttons and platform doors.

12. The implementation method according to claim 8, characterized in that: The target distance calculation in step S3 is for trains in ATP mode.

13. The implementation method according to claim 8, characterized in that: The speed code calculation in step S3 is for a train in RM mode.

14. The implementation method according to claim 8, characterized in that: The target distance or speed code in step S2 is received by the on-board ATP subsystem MVTP and the speed of the out-of-position train is monitored to assist the train operation.

15. 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 8 to 14 is implemented.

16. 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 8 to 14 is implemented.

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