CN115923873A

CN115923873A - Method, device and medium for automatically switching to CN level backup mode from C0 level

Info

Publication number: CN115923873A
Application number: CN202211690723.XA
Authority: CN
Inventors: 欧国恩; 张亚忠; 张剑宇; 杨文�; 安鸿飞; 李紫薇; 邓昊; 焦伟
Original assignee: Casco Signal Ltd
Current assignee: Casco Signal Ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-04-07

Abstract

The invention relates to a method, equipment and a medium for automatically switching to a CN grade backup mode from a C0 grade, wherein the method is operated in a conversion interval from the C0 grade to the CN grade, is disconnected or connected with an RBC (Red blood cell) but does not receive driving permission, and when a positioning and electronic ground effect map is used, the method automatically switches to the CN grade backup mode after driving through a grade conversion point according to grade conversion information, backup mode blocking authorization information and line data information prestored in a preset electronic map. Compared with the prior art, the invention has the advantages of greatly improving the passing capacity of the station and the line operation efficiency and the like.

Description

Method, device and medium for automatically switching from C0 grade to CN grade backup mode

Technical Field

The invention relates to a train signal control system, in particular to a method, equipment and a medium for automatically switching from a C0 (CTCS-0) grade to a CN (CTCS-N) grade backup mode under the condition that vehicle-mounted equipment does not stop.

Background

The CTCS-N level train control system is a new generation of train control system based on satellite positioning and wireless communication, and has wide application prospect in low-density and goods transportation scenes. The CN grade train control system vehicle-mounted equipment is provided with 10 working modes such as standby, visual, complete, guide and backup, wherein the backup mode is used for train operation control under the scene that the communication with the RBC is interrupted and the electronic map and the positioning are effective. The CTCS-0 level is a train operation control system adopted by the existing passenger and freight railways, and realizes train operation control by using LKJ equipment.

In the prior art, the transition from the C0 level to the CN level can be divided into manual transition and automatic transition for a driver. The manual switching requires a driver to control the train to drive into a station in a CN area from a C0 area, and then the train is manually switched to the CN grade in a parking static state. The automatic conversion technology is characterized in that a call responder and a conversion responder are arranged, and after the vehicle-mounted equipment is successfully connected with the RBC equipment, the vehicle-mounted equipment receives the driving permission and the grade conversion information sent by the RBC equipment, so that the grade conversion is completed. The former has to stop in a station and needs a driver to intervene in operation, thus reducing the running efficiency of the line and having low automation degree; the latter can only be switched from the C0 grade to the CN grade complete and guide mode, and can only maintain the C0 station entry when the communication with the RBC is interrupted or the valid driving permission of the RBC is not received, and can not adapt to the communication fault scene and fully play the line condition with higher allowable speed.

Disclosure of Invention

The present invention is directed to a method, an apparatus, and a medium for automatically switching from a C0 level to a CN level backup mode to overcome the above-mentioned drawbacks of the prior art.

The purpose of the invention can be realized by the following technical scheme:

according to a first aspect of the present invention, there is provided a method for automatically switching from a C0 class to a CN class backup mode, where when a train is in a transition section from the C0 class to the CN class, the connection with an RBC is interrupted or interrupted but no driving permission is received, and a positioning and electronic map is used, the method automatically switches to the CN class backup mode after passing through a class transition point according to class transition information, backup mode blocking authorization information and line data information pre-stored in a preset electronic map.

As a preferred technical scheme, the method is provided with a positioning transponder DW in a C0 grade interval for train initial positioning and satellite positioning correction.

As a preferred technical solution, the positioning transponder DW is an entity transponder group.

As a preferred technical solution, the method arranges a virtual transponder group VBG behind the DW transponder in the C0 class interval.

As a preferred technical solution, a backup mode blocking authorization packet, a responder link packet, a line data packet, a level conversion packet and a special section are configured in the virtual responder group VBG.

As a preferred technical scheme, the VBG of the virtual transponder group is stored in an electronic map file, and is sent to the vehicle-mounted device by the temporary speed limit server device TSRS through a network, and the vehicle-mounted device verifies the validity of the electronic map file before use.

As a preferable technical scheme, the vehicle-mounted equipment is automatically connected with the TSRS to perform electronic map verification in the C0 level registration process.

As a preferred technical solution, the electronic map verification specifically includes:

if the electronic map information is stored locally, checking the version of the electronic map, and if the versions are consistent, setting the electronic map as valid; and if the versions of the electronic map are inconsistent, deleting the locally stored electronic map and re-downloading the electronic map.

As a preferred technical scheme, after the electronic map is successfully verified, the vehicle-mounted device is actively disconnected from the TSRS device, if the connection with the TSRS device fails in the registration process, a driver manually verifies the version of the electronic map through the DMI device, and after the driver confirms that the vehicle-mounted device sets the electronic map to be valid.

As a preferred technical solution, after the vehicle-mounted device receives the location transponder DW, the vehicle-mounted device initializes the position information according to the location transponder information.

As a preferred technical solution, the position information of the vehicle-mounted device is represented by Loc (Stano, trackno, trackdis), where Stano is a current station number, trackno is a current track number, and trackdis is a current track displacement; and the vehicle-mounted equipment updates the current position information Loc according to the moving direction and the distance of the train and matches the current position with the electronic map.

As an optimal technical scheme, when the electronic map of the current station is effective and the vehicle-mounted equipment is matched that the current position is located in the VBG triggering range of the virtual responder group, the vehicle-mounted equipment receives the responder message stored in the VBG.

As a preferred technical scheme, the vehicle-mounted equipment carries out validity check on the received transponder message, and if the transponder message is valid, the information of the transponder message including backup mode blocking authorization information is stored; if the grade conversion notice information exists, the vehicle-mounted equipment prompts the grade conversion notice through the DMI; when the effective backup mode blocking authorization message information exists, the vehicle-mounted equipment updates the message information in time according to the current position, and deletes the message information when the message information description end point is reached.

As an optimal technical scheme, when the grade conversion information is received and the C0 grade switching-in CN grade condition is met, the vehicle-mounted equipment judges the switching-in mode;

the C0 grade is switched into the CN grade, the train reaches the grade switching point and no C0 grade brake output exists at present;

when the vehicle-mounted equipment does not meet the CN grade condition, maintaining the C0 grade operation;

except that no C0 level brake output exists, the conditions for the vehicle-mounted equipment to switch into the CN level backup mode are as follows: the method comprises the steps that the train position Loc (train, trackno, trackdis) is known, an electronic map is valid, backup mode blocking authorization data is valid, RBC driving permission information is invalid, the vehicle-mounted equipment meets the conditions at the same time, the CN level blocking authorization mode is automatically switched to, and when valid driving permission information sent by RBC exists, the vehicle-mounted equipment is switched to the CN level complete or guide mode.

According to a second aspect of the invention, there is provided an electronic device comprising a memory having stored thereon a computer program and a processor implementing the method when executing the program.

According to a third aspect of the invention, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the method.

Compared with the prior art, the invention has the following advantages:

1. when the communication between the CN level vehicle-mounted equipment and the RBC fails or RBC authorization information cannot be received, the CN level backup mode is switched, the problem that the vehicle-mounted equipment only can enter the station in the C0 level and then is manually switched is solved, the fault tolerance of the CN level vehicle-mounted equipment to the RBC communication failure is improved, and the availability and the automation degree of the CN level vehicle-mounted equipment are improved.

2. According to the scheme, the vehicle-mounted equipment is supported to be switched into the CN grade backup mode under the condition that RBC communication is failed or RBC authorization information cannot be received during conversion from C0 to CN grade, so that higher line conditions can be fully utilized, the arrival time in the scene is shortened, and the operation efficiency of the line can be improved.

3. The scheme supports that when RBC communication fails, the RBC communication does not need to be stopped to complete grade conversion, and if the backup mode recovers subsequent communication with the RBC and receives the complete mode driving permission, the complete mode can be switched to without stopping, so that the passing capacity of a station and the line operation efficiency can be greatly improved.

Drawings

FIG. 1 is a schematic diagram of a positioning transponder DW, a virtual transponder VBG transponder setup;

fig. 2 is a flowchart of the vehicle-mounted device shifting from the C0 level to the CN backup mode blocking authorization.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

The method for automatically switching to the CN grade backup mode from the C0 grade under the condition that the vehicle-mounted equipment does not stop mainly aims to solve the problems of reduced efficiency and complicated operation caused by the fact that the driver manually switches to the CN grade after the vehicle-mounted equipment only enters a station and stops at the C0 grade under the condition that the RBC equipment is disconnected or RBC driving permission is not received.

The method for switching the vehicle-mounted equipment from the C0 grade to the CN grade backup mode without stopping the vehicle runs in a conversion interval from the C0 grade to the CN grade, is disconnected or connected with the RBC but does not receive driving permission, and automatically switches to the CN grade backup mode after passing through a grade conversion point according to grade conversion information, backup mode blocking authorization information and line data information prestored in a preset electronic map when a positioning and electronic ground effect map is used.

Fig. 1 is a schematic layout diagram of a positioning transponder DW and a virtual transponder group VBG. The positioning responder DW and the virtual responder group VBG are positioned at one side of the C0 grade and the CN grade conversion interval C0 grade, the grade conversion point P is positioned at the boundary point of the C0 grade zone and the CN grade zone, and the virtual responder group VBG can be arranged at any position between the DW responder and the grade conversion point P.

The positioning transponder DW is used for initializing positioning information of the vehicle-mounted device, and its position information LocDW (Stano, trackno, trackdis) is described in an electronic map. The message information set in the virtual responder group comprises the following steps: a CN grade backup mode blocking authorization information packet, a line speed limit information packet, a line gradient information packet and a grade conversion information packet. Optionally, the virtual responder group may further add information packets such as responder link information packet and special section, as required.

Referring to fig. 1, a flow of the blocking authorization operation of the in-vehicle device shifting from the C0 level to the CN level backup mode is described.

And S1, checking the version of the electronic map, wherein automatic checking by vehicle-mounted equipment or manual checking by a driver can be completed. After the vehicle-mounted equipment is started to enter the C0 grade, the temporary speed limiting server TSRS equipment is automatically triggered and connected. And after the connection is successful, the TSRS equipment sends the version information of the electronic map to the vehicle-mounted equipment. The vehicle-mounted equipment checks the received version information of the electronic map with the locally stored electronic map information, and if the version information is consistent with the locally stored electronic map information, the vehicle-mounted equipment sets the state of the locally stored electronic map file to be valid. And if the electronic map file is not stored locally or the stored file version is inconsistent with the data information, the vehicle-mounted equipment deletes the local electronic map file and downloads the electronic map file again from the TSRS equipment. In order to save communication bandwidth, after the version information of the electronic map is checked, the vehicle-mounted equipment is automatically disconnected from the TSRS equipment. When the vehicle-mounted equipment fails to be connected with the TSRS equipment, if the electronic map information is locally stored, the vehicle-mounted equipment DMI prompts a driver to confirm the version information of the electronic map. And after the driver confirms the version and the data of the electronic map, the vehicle-mounted equipment sets the electronic map to be valid.

And S2, initializing and updating the train positioning. In the CN level area, the train position may be represented by a triplet Loc (Stano, trackno, trackdis), where Stano is a station number, trackno is a track number, and trackdis is a track displacement. The train runs in a C0 grade area, and the position state is unknown when the train does not pass through the DW positioning entity transponder. The train state is known to be a necessary condition for triggering the virtual transponder VBG. The location transponder DW position information is described in an electronic map. After the C0-level running train receives the positioning transponder DW from the transponder receiving unit BTM, the train position Loc is initialized according to the information describing the DW transponder in the electronic map. And in the running process of the train, the vehicle-mounted equipment dynamically updates the current position information according to the running direction and the displacement of the train.

And S3, checking and maintaining backup blocking authorization information. When the train runs to the VBG, the vehicle-mounted equipment triggers the VBG and analyzes and verifies the message information. When the level conversion information exists in the VBG, the vehicle-mounted DMI device prompts the driver of the level conversion information. When the CN level backup mode blocking authorization information C14 is present in the VBG, the in-vehicle apparatus checks whether the line gradient information E21 and the line static speed limit information E27 are present in the VBG. When the C14 information, the E21 information, and the E27 information satisfy the following conditions at the same time: when LE21> = LC14, LE27> = LC14, the on-vehicle sets C14, E21 and E27 as effective, wherein LC14 is backup block authorization terminal, LE21 is slope information terminal, LE27 is static speed limit information terminal. If the condition is not met, the information of C14, E21 and E27 is set to be invalid and deleted, and the blocking authorization of the CN level backup mode is avoided being mistakenly switched. In the running process of the train, the on-board equipment updates the information states of the C14, E21 and E27 according to the current train position, and when the train runs to the C14 terminal point and still does not switch into a CN grade backup mode, the on-board equipment deletes the information of the C14, E21 and E27.

And S4, switching to a CN level backup mode blocking authorization. According to the grade conversion information, when the C0 grade train runs to a grade conversion point P, the vehicle-mounted equipment judges whether the current grade condition of the shift-to-CN is met: there is no C0 level brake output and the go to CN level command is active. If the condition is not satisfied, the in-vehicle apparatus keeps operating at the C0 level. If the current CN grade switching condition is met, the vehicle-mounted equipment judges whether the CN grade switching backup mode blocking authorization condition is met: the CN level blocking authorization information (C14, E21 and E27) is valid and the valid driving permission sent by the RBC is not received. If the condition is not satisfied, the CN level backup mode conversion operation is not performed. If the conditions are met, the vehicle-mounted equipment shifts to CN level backup mode blocking authorization, and the vehicle-mounted equipment calculates a mode operation curve according to blocking authorization information (C14, E21 and E27) and monitors the train to operate in a CN level backup mode blocking authorization mode.

The above is a description of method embodiments, and the embodiments of the present invention are further described below by using examples of electronic devices and storage media.

The electronic device of the present invention includes a Central Processing Unit (CPU) that can perform various appropriate actions and processes according to computer program instructions stored in a Read Only Memory (ROM) or computer program instructions loaded from a storage unit into a Random Access Memory (RAM). In the RAM, various programs and data required for the operation of the device 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.

A plurality of 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, and the like; storage units such as magnetic disks, optical disks, and the like; 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 via a computer network such as the internet and/or various telecommunication networks.

The processing unit executes the respective methods and processes described above, such as the methods S1 to S4. For example, in some embodiments, methods S1-S4 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 ROM and/or a communication unit. When the computer program is loaded into RAM and executed by the CPU, one or more of the steps of methods S1-S4 described above may be performed. Alternatively, in other embodiments, the CPU may be configured to perform methods S1-S4 in any other suitable manner (e.g., by way of firmware).

The functions described herein above may be performed, at least in part, by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that may be used include: field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems on a chip (SOCs), complex Programmable Logic Devices (CPLDs), and the like.

Program code for implementing the methods 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 performed. The program code may execute 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.

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. The 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 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 compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for automatically switching to a CN grade backup mode from a C0 grade is characterized in that the method is operated in a transition region from the C0 grade to the CN grade when a train is in a C0 grade to the CN grade, is disconnected or connected with an RBC but does not receive driving permission, and when a positioning and electronic ground effect map is used, the method automatically switches to the CN grade backup mode after passing a grade transition point according to grade transition information, backup mode blocking authorization information and line data information prestored in a preset electronic map.

2. The method for automatically shifting from the C0 class to the CN class backup mode according to claim 1, wherein the method sets a positioning transponder DW in the C0 class section for train initial positioning and satellite positioning correction.

3. The method of claim 2, wherein the location responder DW is an entity responder group.

4. Method for automatic transition from C0 class into CN class backup mode according to claim 1, characterized in that it arranges virtual transponder group VBG behind the C0 class interval DW transponders.

5. The method for automatically switching to the CN level backup mode from the C0 level according to claim 4, wherein a backup mode blocking authorization packet, a responder link packet, a line data packet, a level switch packet and a special section are configured in the VBG of the virtual responder group.

6. The method for automatically switching to the CN grade backup mode from the C0 grade according to the claim 4, characterized in that the VBG of the virtual responder group is stored in an electronic map file, and is sent to the vehicle-mounted equipment by the TSRS in a network mode, and the validity of the electronic map file is checked by the vehicle-mounted equipment before the vehicle-mounted equipment is used.

7. The method for automatically switching to the CN grade backup mode from the C0 grade according to claim 6, wherein the vehicle-mounted device automatically connects to the TSRS for electronic map verification during the C0 grade registration process.

8. The method for automatically switching from the C0 level to the CN level backup mode according to claim 7, wherein the electronic map verification specifically comprises:

9. The method as claimed in claim 7, wherein the vehicle-mounted device actively disconnects from the TSRS device after the electronic map is successfully verified, and if the TSRS device fails to connect during the registration process, the driver manually checks the version of the electronic map through the DMI device, and the vehicle-mounted device sets the electronic map to be valid after the driver confirms.

10. The method as claimed in claim 2, wherein the vehicle-mounted device initializes the location information according to the location transponder information after receiving the location transponder DW.

11. The method for automatically shifting from the C0 level to the CN level backup mode according to claim 10, wherein the location information of the on-board device is represented by Loc (Stano, trackno, trackdis), where Stano is a current station number, trackno is a current track number, and trackdis is a current track displacement; and the vehicle-mounted equipment updates the current position information Loc according to the moving direction and the distance of the train and matches the current position with the electronic map.

12. The method for automatically switching to the CN level backup mode from the C0 level is characterized in that when the electronic map of the current station is valid and the matched current position of the vehicle-mounted equipment is positioned in the VBG triggering range of the virtual responder group, the vehicle-mounted equipment receives the responder message stored in the VBG.

13. The method for automatically switching to the CN level backup mode from the C0 level according to claim 12, wherein the on-board device performs validity check on the received transponder message, and if the received transponder message is valid, the on-board device stores the transponder message information including the backup mode blocking authorization information; if the grade conversion notice information exists, the vehicle-mounted equipment prompts the grade conversion notice through the DMI; when the effective backup mode blocking authorization message information exists, the vehicle-mounted equipment updates the message information in time according to the current position, and deletes the message information when reaching the message information description end point.

14. The method for automatically switching to the CN grade backup mode from the C0 grade according to claim 4, wherein when grade switching information is received and a C0 grade switching to CN grade condition is met, the vehicle-mounted equipment judges the switching mode;

except that no C0 level brake output exists, the conditions for the vehicle-mounted equipment to shift to the CN level backup mode are as follows: the method comprises the steps that the train position Loc (train, trackno, trackdis) is known, an electronic map is valid, backup mode blocking authorization data is valid, RBC driving permission information is invalid, the vehicle-mounted equipment meets the conditions at the same time, the CN level blocking authorization mode is automatically switched to, and when valid driving permission information sent by RBC exists, the vehicle-mounted equipment is switched to the CN level complete or guide mode.

15. An electronic device comprising a memory and a processor, the memory having stored thereon a computer program, wherein the processor, when executing the program, implements the method of any of claims 1-14.

16. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out the method of any one of claims 1 to 14.