Method for automatically switching from c0 level to cn level backup mode, and device and medium

Abstract

The present invention relates to a method, device and medium for automatically transferring from a C0 level to a CN level backup mode. In the method, when a train runs in a transfer interval from the C0 level to a CN level, the train is disconnected from or connected with an RBC but no movement authority is received, and when positioning and an electronic map are available, the train automatically transfers to the CN level backup mode after passing a level transfer point according to level transfer information, backup mode block authorization information and line data information pre-stored in a preset electronic map. Compared with the prior art, the present invention has the advantages of greatly improving a passing capacity of a station and line operation efficiency.

Description

FIELD OF TECHNOLOGY

[0001] The present invention relates to a train signal control system, in particular to a method, device and medium for automatically transferring from C0 (CTCS-0) level to CN (CTCS-N) level backup mode under a condition that an on-board device does not stop a train.BACKGROUND

[0002] A CTCS-N level train control system is a new generation of train control system based on satellite positioning and wireless communication, which has broad application prospects in low-density and cargo transportation scenarios. An on-board device of the CN level train control system is equipped with 10 working modes, comprising standby, onsight, full-supervision, call-on and backup working modes, wherein the backup mode is used for train operation control in a scenario when communication with an RBC is interrupted and an electronic map and positioning are effective. A CTCS-0 level is a train operation control system used by existing ordinary-speed passenger and freight railways, which uses an LKJ device to realize the train operation control.

[0003] In the existing technology, transferring from the C0 level to the CN level may be divided into driver manual transferring and automatic transferring. The manual transferring requires a driver to control a train to run from a C0 area to a CN area station, stop the train to manually transfer to the CN level. Through setting a radio command balise and a transfer command balise, the automatic transfer technology receives movement authority and level transfer information transmitted by the RBC after the on-board device is successfully connected to the RBC device to complete the level transferring. The former must stop the train in the station and requires the driver to intervene in an operation, which reduces operation efficiency of a line and a degree of automation is not high. The latter can only transfer from the C0 level to the CN level in the full-supervision and call-on modes, and can only maintain C0 to enter the station when the communication with the RBC is interrupted or valid movement authority is not received from the RBC, and cannot adapt to a communication failure scenario and give full play to a line condition with a higher allowable speed.SUMMARY

[0004] The present invention aims to overcome the defects in the prior art and provide a method, device and medium for automatically transferring from C0 level to CN level backup mode.

[0005] The purpose of the present invention can be realized by the following technical schemes: According to the first aspect of the present invention, a method is provided for automatically transferring from C0 level to CN level backup mode. In the method, when a train runs in a transfer interval from the C0 level to CN level, the train is disconnected from or connected with an RBC but no movement authority is received, and when positioning and an electronic map are available, the train automatically transfers to the CN level backup mode after passing a level transfer point according to level transfer information, backup mode block authorization information and line data information pre-stored in a preset electronic map.

[0006] As a preferred technical scheme, the method sets a positioning balise DW in a C0 level interval for initial train positioning and satellite positioning correction.

[0007] As a preferred technical scheme, the positioning balise DW is a physical balise group.

[0008] As a preferred technical scheme, the method arranges a virtual balise group (VBG) behind the positioning balise DW in the C0 level interval.

[0009] As a preferred technical scheme, the VBG is configured with a backup mode block authorization information packet, a balise link information packet, a line data information packet, a level transfer information packet, and a special area packet.

[0010] As a preferred technical scheme, the VBG is stored in an electronic map file, and is transmitted by a temporary speed restriction server (TSRS) to an on-board device through a network, and the on-board device verifies validity of the electronic map file before use.

[0011] As a preferred technical scheme, the on-board device is automatically connected to the TSRS for electronic map verification in a C0 level registration process.

[0012] As a preferred technical scheme, the electronic map verification is specifically as follows: if electronic map information is already stored locally, electronic map versions are verified; if the versions are consistent, the electronic map is set as valid; and if the electronic map versions are inconsistent, the locally stored electronic map is deleted and a new electronic map is downloaded.

[0013] As a preferred technical scheme, after the electronic map verification is successful, the on-board device automatically terminate the session with TSRS; and if a connection with the TSRS fails in the registration process, a driver manually checks the electronic map version through a DMI device, and the on-board device sets the electronic map as valid after the driver confirms the electronic map version.

[0014] As a preferred technical scheme, when the on-board device receives the positioning balise DW, the on-board device initializes location information according to positioning balise information.

[0015] As a preferred technical scheme, the location information of the on-board device is represented by Loc (Stano, trackno, trackdis), wherein the Stano is a current station number, the trackno is a current track number, and the trackdis is a current track offset; and the on-board device updates current location information Loc according to a direction and a distance of train movement, and matches a current location with the electronic map.

[0016] As a preferred technical scheme, when an electronic map of a current station is valid and the on-board device matches the current location within a trigger range of the VBG, the on-board device receives a balise message stored in the VBG.

[0017] As a preferred technical scheme, the on-board device checks validity of the received balise message, and if valid, balise message information including the backup mode block authorization information is stored; if there is level transfer pre-notice information, the on-board device prompts a level transfer pre-notice through the DMI; when there is valid backup mode block authorization message information, the on-board device updates the message information in time based on the current location and deletes the message information when an end point described in the message information is reached.

[0018] As a preferred technical scheme, when level transfer information is received and a condition of transferring from the C0 level to the CN level is met, the on-board device judges a transfer mode; the condition of transferring from the C0 level to the CN level is that the train reaches a level transfer point and there is no C0 level braking output at present; when the on-board device does not meet the condition of transferring to the CN level, C0 level operation is maintained; and

[0019] in addition to absence of the C0 level braking output, a condition that the on-board device transfers to the CN level backup mode is: the train location Loc (Stano, trackno, trackdis) is known, the electronic map is valid, backup mode block authorization data is valid, and RBC movement authority is invalid; the on-board device meets the above conditions at the same time, and automatically transfers to a CN level backup block authorization mode; and when the on-board device has valid movement authority transmitted by the RBC, the on-board device transfers to a CN level full-supervision or call-on mode.

[0020] According to a second aspect of the present invention, provided is an electronic device, comprising a processor and a memory on which a computer program is stored, wherein the processor, when executing the program, implements the above method.

[0021] According to a third aspect of the present invention, provided is a computer-readable storage medium on which a computer program is stored, wherein the program, when executed by a processor, implements the above method.

[0022] Compared with the prior art, the present invention has the following advantages: 1. When the communication with the RBC fails or the RBC authorization information is not received, it transfers into the CN level backup mode, which avoids a problem of manual transferring after only entering the station with the C0 level, increases fault tolerance of the CN level on-board device to an RBC communication failure, and improves availability and an automation degree of the CN level on-board device. 2. In a scenario that the communication with the RBC fails or the RBC authorization information is not received during the C0 to CN level transferring, the above scheme supports the on-board device to transfer into the CN level backup mode, which can make full use of a higher line condition, shorten arrival time in this scenario, and improve operation efficiency of the line. 3. The support of the above scheme lies in that there is no need for the train to stop to complete the level transferring when the communication with the RBC fails, and the backup mode can be transferred to the full-supervision mode without stopping of the train if the full-supervision mode movement authority is received after the subsequent communication recovery with the RBC, which can greatly improve the station passing capacity and the operation efficiency of the line. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] FIG. 1 is a schematic diagram of setting of a positioning balise DW and a virtual balise VBG; and FIG. 2 is a flow chart of an on-board device transferring from a C0 level to a CN backup mode block authorization. DESCRIPTION OF THE EMBODIMENTS

[0024] The following is a clear and complete description of technical schemes in embodiments of the present invention in combination with drawings attached to the embodiments of the present invention. Obviously, the embodiments described is a part of the embodiments of the present invention, but not the whole embodiments. Based on the embodiments of the present invention, all other embodiments obtained by an ordinary skilled person in the art without creative labor shall fall within a protection scope of the present invention.

[0025] In the present invention, a method for automatically transferring from a C0 level to a CN level backup mode under a condition that an on-board device does not stop a train mainly aims at solving a problem of reduced efficiency and a complicated operation caused by a driver manually transferring the on-board device to a CN level after entering a station in the C0 level and stopping a train in a condition that a connection with an RBC device is interrupted or RBC movement authority is not received.

[0026] In the present invention, in the method for transferring from the C0 level to the CN level backup mode without the on-board device stopping the train, when a train runs in a transfer interval from the C0 level to a CN level, the train is disconnected from or connected with an RBC but no movement authority is received, and when positioning and an electronic map are available, the train automatically transfers to the CN level backup mode after passing a level transfer point according to level transfer information, backup mode block authorization information and line data information pre-stored in a preset electronic map.

[0027] FIG. 1 is a schematic diagram of arrangement of a positioning balise DW and a virtual balise VBG. The positioning balise DW and the virtual balise group VBG are located at a C0 level side of a transfer interval of the C0 level and the CN level, a level transfer point P is located at a boundary point between a C0 level area and a CN level area, and the virtual balise group VBG may be set at any position between the positioning balise DW and the level transfer point P.

[0028] The positioning balise DW is configured to initialize location information of the on-board device, and its location information LocDW(Stano, trackno, trackdis) is described in an electronic map. Packet information set in the virtual balise group comprises a CN level backup mode block authorization information packet, a line speed restriction packet, a line gradient information packet, and a level transfer information packet. Alternatively, the virtual balise group may also add a balise link packet, a special section and other packets as needed.

[0029] Refer to FIG. 1, it illustrates a flow chart of the on-board device transferring from the C0 level to the CN backup mode block authorization.

[0030] Step S1: verifying an electronic map version, which may be done automatically by the on-board device or manually by the driver. After the on-board device starts to enter the C0 level, it automatically triggers a connection to a temporary speed restriction server TSRS device. After the connection is successful, the TSRS device transmits the electronic map version information to the on-board device. The on-board device uses the received electronic map version information to check with locally stored electronic map information. If the version and data are consistent, the on-board device sets a state of a locally stored electronic map file as valid. If the electronic map file is not stored locally or a stored file version and data information are inconsistent, the on-board device deletes the local electronic map file and re-downloads the electronic map file from the TSRS device. In order to save a communication bandwidth, after verifying the electronic map version information, the on-board device automatically disconnects from the TSRS device. When the on-board device fails to connect to the TSRS device, if the electronic map information is stored locally, the on-board device DMI prompts the driver to confirm the electronic map version information. After the driver confirms the electronic map version and data, the on-board device sets the electronic map as valid.

[0031] Step S2: initializing and updating train positioning. In the CN level area, the location of the train may be represented by a triple Loc (Stano, trackno, trackdis), wherein the Stano is a station number, the trackno is a track number, and the trackdis is a track offset. The train is operating in the C0 level area and a location state is unknown if the train does not pass a DW positioning physical balise. A known train state is necessary to trigger the virtual balise VBG. The location information of the positioning balise DW is described in the electronic map. After receiving the positioning balise DW from a balise receiving unit BTM, the C0 level train initializes the train position Loc according to the positioning balise DW information described in the electronic map. During the train operation, the on-board device dynamically updates a current position information according to a running direction and displacement of the train.

[0032] Step S3: verifying and maintaining the backup block authorization information. When the train runs to the virtual balise VBG, the on-board device triggers the virtual balise VBG and parses and verifies the packet information. When there is level transfer information in the VBG, the on-board DMI device prompts the driver with the level transfer information. When there is CN level backup mode block authorization information C14 in the VBG, the on-board device checks whether there is line gradient information E21 and line static speed restriction information E27 in the VBG. When the C14 information, the E21 information and the E27 information satisfy the following conditions at the same time: LE21 >= LC14, LE27 >= LC14, the on-board device sets the C14, the E21 and the E27 as valid, wherein the LC14 is a terminal of the backup block authorization, the LE21 is a terminal of the gradient information, and the LE27 is a terminal of the static speed restriction information. If the conditions are not satisfied, the C14, the E21, and the E27 information are set as invalid and deleted to avoid incorrect transferring to the CN level backup mode block authorization. During the train operation, the on-board device updates information states of the C14, the E21 and the E27 according to a current train position. When the train runs to a terminal of the C14 and still does not transfer into the CN level backup mode, the on-board device deletes the information of the C14, the E21 and the E27.

[0033] Step S4: transferring into the CN level backup mode block authorization. According to the level transfer information, when the C0 level train runs to the level transfer point P, the on-board device determines whether conditions for transferring to the CN level are satisfied currently: there is no C0 level brake output and a command for transferring to the CN level is valid. If the conditions are not satisfied, the on-board device maintains the operation in the C0 level. If the conditions for transferring to the CN level are satisfied currently, the on-board device determines whether conditions for transferring to the CN level backup mode block authorization are satisfied: the CN level block authorization information (C14, E21, E27) is valid and no valid movement authority from the RBC has been received. If the conditions are not satisfied, the CN level backup mode transfer operation is not performed. If the conditions are satisfied, the on-board device transfers to the CN level backup mode block authorization, and the on-board device calculates a mode speed curve according to the block authorization information (C14, E21, E27) and monitors the train for running in the CN level backup mode block authorization mode.

[0034] The above is an introduction to embodiments of the method, and the schemes of the present invention are further explained by embodiments of an electronic device and a storage medium.

[0035] The electronic device of the present invention comprises 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 loaded from a storage unit into a random access memory (RAM). In the RAM, various programs and data required for an 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.

[0036] A plurality of components in the device are connected to the I / O interface, comprising: input units, such as a keyboard and a mouse; output units, such as various types of displays and speakers; storage units, such as a disk and an optical disc; and communication units, such as a network card, a modem and a wireless communication transceiver. The communication unit allows the device to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunications networks.

[0037] The processing unit performs each of the methods and processes described above, such as methods S1 to S4. For example, in some embodiments, the methods S1 to S4 may be realized as a computer software program that is physically contained in a machine-readable medium, such as a storage unit. In some embodiments, parts or all of the computer program may 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 S1 to S4 described above can be performed. Alternatively, in other embodiments, the CPU may be configured to execute the methods S1 to S4 by any other appropriate manner (e.g., with the help of a firmware).

[0038] The functions described above herein can be performed, at least in part, by one or more hardware logical components. For example, without limitation, demonstration types of hardware logic components that can be used comprise: a field programmable gate array (FPGA), an application-specific integrated circuit (ASIC), an application-specific standard product (ASSP), a system-on-chip (SOC), a complex programmable logic device (CPLD), and so on.

[0039] The program codes for implementing the method of the present invention may be written in any combination of one or more pieces of programming language. These program codes may be provided to a processor or controller of a general-purpose computer, a special-purpose computer or another programmable data processing device so that the program codes, when executed by the processor or controller, implements the functions / operations specified in the flow chart and / or block diagram. The program codes can be executed entirely on a machine, partially on a machine, partially on a machine and partially on a remote machine or completely on a remote machine or server as a stand-alone software package.

[0040] In the context of the present invention, the machine readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction executing system, apparatus or device. The machine readable medium may be a machine readable signal medium or a machine readable storage medium. The machine readable medium may comprise, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the above. More specific examples of the machine readable storage medium would comprise 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 ROM (EPROM or flash memory), an optical fiber, a convenient compact disk ROM (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0041] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this, and any technical person familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, which shall be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for automatically transferring from a C0 level to a CN level backup mode, wherein when a train runs in a transfer interval from the C0 level to a CN level, the train is disconnected from or connected with an RBC but no movement authority is received, and when positioning and an electronic map are available, the train automatically transfers to the CN level backup mode after passing a level transfer point according to level transfer information, backup mode block authorization information and line data information pre-stored in a preset electronic map.

2. The method for automatically transferring from a C0 level to a CN level backup mode according to claim 1, wherein the method sets a positioning balise DW in a C0 level interval for initial train positioning and satellite positioning correction.

3. The method for automatically transferring from a C0 level to a CN level backup mode according to claim 2, wherein the positioning balise DW is a physical balise group.

4. The method for automatically transferring from a C0 level to a CN level backup mode according to claim 1, wherein the method arranges a virtual balise group (VBG) behind the positioning balise DW in the C0 level interval.

5. The method for automatically transferring from a C0 level to a CN level backup mode according to claim 4, wherein the VBG is configured with a backup mode block authorization information packet, a balise link information packet, a line data information packet, a level transfer information packet, and a special area packet.

6. The method for automatically transferring from a C0 level to a CN level backup mode according to claim 4, wherein the VBG is stored in an electronic map file, and is transmitted by a temporary speed restriction server (TSRS) to an on-board device through a network, and the on-board device verifies validity of the electronic map file before use.

7. The method for automatically transferring from a C0 level to a CN level backup mode according to claim 6, wherein the on-board device is automatically connected to the TSRS for electronic map verification in a C0 level registration process.

8. The method for automatically transferring from a C0 level to a CN level backup mode according to claim 7, wherein the electronic map verification is specifically as follows: if electronic map information is already stored locally, electronic map versions are verified; if the versions are consistent, the electronic map is set as valid; and if the electronic map versions are inconsistent, the locally stored electronic map is deleted and a new electronic map is downloaded.

9. The method for automatically transferring from a C0 level to a CN level backup mode according to claim 7, wherein after the electronic map verification is successful, the on-board device is automatically terminate the session with the TSRS; and if a connection with the TSRS fails in the registration process, a driver manually checks the electronic map version through a DMI device, and the on-board device sets the electronic map as valid after the driver confirms the electronic map version.

10. The method for automatically transferring from a C0 level to a CN level backup mode according to claim 2, wherein when the on-board device receives the positioning balise DW, the on-board device initializes location information according to positioning balise information.

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

12. The method for automatically transferring from a C0 level to a CN level backup mode according to claim 4, wherein when an electronic map of a current station is valid and the on-board device matches the current location within a trigger range of the VBG, the on-board device receives a balise message stored in the VBG.

13. The method for automatically transferring from a C0 level to a CN level backup mode according to claim 12, wherein the on-board device checks validity of the received balise message, and if valid, balise message information including the backup mode block authorization information is stored; if there is level transfer pre-notice information, the on-board device prompts a level transfer pre-notice through the DMI; when there is valid backup mode block authorization message information, the on-board device updates the message information in time based on the current location and deletes the message information when an end point described in the message information is reached.

14. The method for automatically transferring from a C0 level to a CN level backup mode according to claim 4, wherein when level transfer information is received and a condition of transferring from the C0 level to the CN level is met, the on-board device judges a transfer mode. the condition of transferring from the C0 level to the CN level is that the train reaches a level transfer point and there is no C0 level braking output at present; when the on-board device does not meet the condition of transferring to the CN level, C0 level operation is maintained; in addition to absence of the C0 level braking output, a condition that the on-board device transfers to the CN level backup mode is: the train location Loc (Stano, trackno, trackdis) is known, the electronic map is valid, backup mode block authorization data is valid, and RBC movement authority is invalid; the on-board device meets the above conditions at the same time, and automatically transfers to a CN level backup block authorization mode; and when the on-board device has valid movement authority transmitted by the RBC, the on-board device transfers to a CN level full-supervision or call-on mode.

15. An electronic device, comprising a processor and a memory on which a computer program is stored, wherein the processor, when executing the program, implements the method according to any one of claims 1 to 14.

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

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