Train control method in wet rail scene

Abstract

The invention discloses a train control method in a wet rail scene, and the method comprises the steps: a vehicle-mounted VOBC uploads train slip alarm information to a central ATS system based on collected slip alarm and / or signal side slip alarm information after vehicle processing; after the vehicle-mounted VOBC of the current vehicle reports slip, zero speed and degradation state information to the ZC / RC, the ZC / RC forwards the corresponding information to the vehicle-mounted VOBC of the rear vehicle closest to the same interval; and the rear vehicle manually sets or cancels the wet rail mode based on remote and / or local. By means of the method, the intelligent level of signal system processing response under the wet rail line condition is improved, so that a driver is matched to reduce the slip probability of the line under the wet rail condition and the emergency braking probability caused by invalid train speed measurement, and the system availability under the wet rail condition is improved.

Description

Technical Field

[0001] The present application belongs to the field of train control technology, and in particular, relates to a train control method in a wet track scenario. Background Art

[0002] The development of urban rail transit has shifted from focusing on the operation and control of underground trains to paying more attention to the complex environmental impacts of ground lines, especially in severe weather such as low temperature, rain, snow and ice. How to ensure the stable operation of trains on ground lines is a difficult problem that needs to be solved urgently. Summary of the invention

[0003] The purpose of this application is to overcome the problems of the prior art and disclose a train control method in a wet track scenario.

[0004] The purpose of this application is achieved through the following technical solutions:

[0005] A train control method in a wet track scenario, the train control method comprising:

[0006] The onboard VOBC uploads the train skidding alarm information to the central ATS system based on the collected vehicle skidding alarm information and / or signal side skidding alarm information after processing;

[0007] When the VOBC on the front vehicle reports the slip, zero speed, or degradation status information to the ZC / RC, the ZC / RC forwards the corresponding information to the VOBC on the nearest rear vehicle in the same section;

[0008] The following vehicle sets or cancels the wet track mode based on remote and / or local manual operation.

[0009] According to a preferred embodiment, the alarm information sent by the ZC / RC to the following vehicle includes: the train ahead in the section is slipping, the train ahead in the section is stopping, and the train ahead in the section is degrading.

[0010] According to a preferred embodiment, the following vehicle remotely sets or cancels the wet track mode, including:

[0011] When the train is at the CBTC-FAM / AM / CM or ABL-FAM / AM / CM level, the dispatcher sets the entry or exit of wet track mode in the central ATS system interface, including:

[0012] Set the wet track mode for the entire line and cancel the wet track mode for the entire line;

[0013] Set the wet track mode according to the section and cancel the entry into the wet track mode of the section;

[0014] Set the wet track mode according to the open-air segment.

[0015] According to a preferred embodiment, the process of setting the wet track mode for the entire line includes:

[0016] In the central ATS system, enter the full-line wet track mode - CBTC-FAM / AM / CM or ABL-FAM / AM / CM level;

[0017] When the ZC / RC system receives the full-line wet track setting from the ATS system, it determines that the train is about to enter the wet track mode range and issues a wet track command, and sends the current MA withdrawal wet track distance mark to the VOBC;

[0018] At the CBTC level, when the onboard VOBC receives the wet track command from the ZC / RC and the train has stopped at the mainline operation stop point, it will enter the wet track mode.

[0019] The process of cancelling the entry into the full-line wet track mode includes:

[0020] The central ATS system chooses to cancel the setting of the wet track mode for the entire line, and when the ZC / RC system receives the cancellation of the wet track mode for the entire line set through secondary confirmation from the ATS system, it forwards the cancellation instruction for the wet track mode for the entire line to the VOBC system, and the on-board VOBC controls the train to stop and then exit the wet track mode.

[0021] According to a preferred embodiment, the process of setting the wet track mode according to the interval includes:

[0022] The wet track section is selected in the central ATS system based on the station diagram. When the ZC / RC system receives the wet track section set by the ATS system, it determines that the train is about to enter the wet track mode range and issues a wet track instruction, and sends the current MA withdrawal wet track distance mark to the VOBC;

[0023] At the CBTC level, the onboard VOBC receives the wet track command sent by the ZC / RC and the train has stopped in the section, and enters the wet track mode;

[0024] The process of cancelling entry into the interval wet track mode includes:

[0025] Based on the station diagram, the wet track section cancellation selection is performed in the central ATS system. When the ZC / RC system receives the cancellation section wet track mode set by the ATS system through secondary confirmation, it forwards the cancellation section wet track mode cancellation instruction to the on-board VOBC system. The on-board VOBC controls the train to stop and then exit the wet track mode.

[0026] According to a preferred embodiment, the following vehicle manually sets or cancels the wet track mode locally, including: when the train is in CBTC-AM / CM or ITC-AM / CM or ABL, and the driver stops the train section or stops at the platform, the wet track mode is set through the MMI operation,

[0027] Includes: setting the full-line wet track mode through MMI and canceling the full-line wet track mode through MMI.

[0028] According to a preferred embodiment, the process of setting the full-line wet track mode through the MMI includes:

[0029] When ATP receives the application to enter the wet track mode and confirms that the train is in the zero speed state, ATP replies to MMI to enter the wet track mode;

[0030] After the wet track mode is set successfully, the wet track mode icon will be displayed on the MMI main interface.

[0031] According to a preferred embodiment, the process of canceling the full-line wet track mode through the MMI includes:

[0032] When ATP receives the application for cancelling wet track and confirms that the train is at zero speed, it replies to MMI with the information that allows the wet track to be canceled, otherwise it does not reply with the permission information to MMI;

[0033] When the MMI receives a reply from ATP confirming the cancellation of the wet track within the waiting confirmation time, the cancellation of the wet track operation is completed and the corresponding wet track icon is no longer displayed.

[0034] According to a preferred embodiment, when the onboard VOBC at the CBTC level receives a wet track mode instruction from the central ATS system, the train enters the wet track mode after stopping at the mainline operation stop point and section;

[0035] It also limits braking force, traction, and running speed, increases the difference between recommended speed and emergency speed, increases fixed protection distance, and increases the protection distance between front and rear vehicles.

[0036] According to a preferred embodiment, when VOBC determines that the slip speed measurement is invalid, it sends the emergency braking reason to ATS. At this time, the train stops in the section. ATS issues a train detention instruction based on the emergency braking reason sent by VOBC, and the platform in the direction of the oncoming train automatically detains the train.

[0037] The aforementioned main scheme of the present application and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed for protection in the present application. After understanding the scheme of the present application, those skilled in the art can understand that there are multiple combinations based on the prior art and common knowledge, all of which are technical schemes to be protected by the present application, and they are not exhaustively listed here.

[0038] Beneficial effects of this application:

[0039] The method of the present application is used to improve the intelligence level of the signal system processing response under wet track conditions, so as to cooperate with the driver to reduce the probability of slipping under wet track conditions and the probability of emergency braking due to invalid train speed measurement, thereby improving the system availability under wet track conditions. DETAILED DESCRIPTION

[0040] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0041] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In addition, the present application would like to point out that, in the present application, unless the specific structure, connection relationship, positional relationship, power source relationship, etc. are specifically written out, the structure, connection relationship, positional relationship, power source relationship, etc. involved in the present application are all known by those skilled in the art on the basis of the prior art without creative work.

[0043] The present application discloses a train control method in a wet track scenario, the train control method comprising: the on-board VOBC uploads train slip alarm information to the central ATS system based on the collected vehicle-processed slip alarm and / or signal-side slip alarm information; and after the on-board VOBC of the current vehicle reports the slip, zero speed, and degradation status information to the ZC / RC, the ZC / RC forwards the corresponding information to the on-board VOBC of the nearest following vehicle in the same section; the following vehicle manually sets or cancels the wet track mode based on remote and / or local.

[0044] Preferably, VOBC uses both the skid alarm after vehicle processing and the signal side skid alarm information. When a skid is reported to the on-board VOBC, the on-board VOBC will upload the train skid alarm information to the central ATS system to pop up an alarm.

[0045] Among them, the alarm information sent by ZC / RC to the following vehicle includes: the train ahead in the section is slipping, the train ahead in the section is stopping, and the train ahead in the section is degrading.

[0046] Specifically, the onboard VOBC of the leading vehicle reports the slip status information to the ZC / RC, and the ZC / RC forwards the slip alarm information to the onboard VOBC of the nearest following vehicle in the same section. The text prompt on the MMI interface of the following vehicle reads: "The train ahead in the section is slipping."

[0047] When the leading car (a train with communication in the section) reaches zero speed, the ZC / RC will forward the "train ahead in the section has stopped" to the nearest onboard VOBC of the following car in the same section, and a text prompt will appear on the MMI interface of the following car: "train ahead in the section has stopped".

[0048] When the current train is downgraded, the VOBC onboard the preceding train sends a message to ZC / RC that the preceding train has experienced a downgrade in the section or there is a downgraded train (non-CBTC train). ZC / RC forwards the "previous section train downgrade" to the nearest subsequent train's onboard VOBC in the same section, and MMI issues an early warning of "previous section train downgrade".

[0049] Preferably, the following vehicle remotely sets or cancels the wet track mode, including: when the train is at the CBTC-FAM / AM / CM or ABL-FAM / AM / CM level, the dispatcher sets the entry or exit of the wet track mode in the central ATS system interface, and includes: setting the wet track mode for the entire line and canceling the entry into the wet track mode for the entire line; setting the wet track mode for each section and canceling the entry into the wet track mode for each section; setting the wet track mode for the open-air section.

[0050] Preferably, the process of setting the wet track mode for the entire line includes:

[0051] In the central ATS system, enter the full-line wet track mode - CBTC-FAM / AM / CM or ABL-FAM / AM / CM level;

[0052] When the ZC / RC system receives the full-line wet track setting from the ATS system, it determines that the train is about to enter the wet track mode range and issues a wet track command, and sends the current MA withdrawal wet track distance mark to the VOBC;

[0053] At the CBTC level, when the onboard VOBC receives the wet track command sent by the ZC / RC and the train has stopped at the mainline operation stop point, it enters the wet track mode.

[0054] Furthermore, after the wet track mode of the entire line is successfully set, the wet track mode lights of the entire line will display the corresponding colors and the train number window will display the corresponding icons.

[0055] Preferably, the process of cancelling entry into the full-line wet track mode includes: selecting to cancel the setting of the full-line wet track mode in the central ATS system, and when the ZC / RC system receives the cancellation of the setting of the full-line wet track mode set by the ATS system through secondary confirmation, it forwards the cancellation instruction of the full-line wet track mode to the VOBC system, and the on-board VOBC controls the train to exit the wet track mode after stopping.

[0056] Preferably, the process of setting the wet track mode according to the section includes: selecting the wet track section in the central ATS system based on the station map, and when the ZC / RC system receives the wet track of the section set by the ATS system, it determines that the train is about to enter the wet track mode range and then issues a wet track instruction, and sends the current MA withdrawal wet track distance identifier to the VOBC; at the CBTC level, the on-board VOBC receives the wet track instruction sent by the ZC / RC and the train has stopped steadily in the section, and enters the wet track mode.

[0057] Furthermore, after the section wet track mode is successfully set, the section wet track mode light displays the corresponding color and the train number window displays the corresponding icon.

[0058] Preferably, the process of cancelling entry into the section wet track mode includes: selecting the wet track section to be canceled in the central ATS system based on the station diagram; when the ZC / RC system receives the cancellation of the section wet track mode set by the ATS system through secondary confirmation, it forwards the cancellation instruction of the section wet track mode to the on-board VOBC system, and the on-board VOBC controls the train to exit the wet track mode after stopping.

[0059] Preferably, the following vehicle manually setting or canceling the wet track mode locally includes: when the train is in CBTC-AM / CM or ITC-AM / CM or ABL, and the driver stops the train section or stops on the platform, the wet track mode is set through MMI operation,

[0060] Specifically including: setting the full-line wet track mode through MMI and canceling the full-line wet track mode through MMI.

[0061] Preferably, the process of setting the wet track mode for the entire line through the MMI includes: when the ATP receives the application for entering the wet track mode and confirms that the train is in a zero speed state, the ATP replies to the MMI to enter the wet track mode. Further, after the wet track mode is successfully set, the MMI main interface displays the wet track mode icon accordingly.

[0062] Preferably, the process of canceling the wet track mode of the entire line through MMI includes: when ATP receives the application for canceling the wet track and confirms that the train is in a zero speed state, it replies to MMI with information allowing the wet track to be canceled, otherwise it does not reply with permission information to MMI; when MMI receives the confirmation of canceling the wet track from ATP within the waiting confirmation timing time, the wet track cancellation operation is completed, and the corresponding wet track icon is no longer displayed.

[0063] Preferably, when the onboard VOBC at the CBTC level receives the wet track mode command from the central ATS system, the train enters the wet track mode after stopping at the mainline operation stop point and section;

[0064] The braking force, traction and running speed are limited to reduce the risk of skidding; the difference between the recommended speed and the emergency speed is increased to avoid the emergency risk of overspeeding during vehicle control; the ATP protection curve is calculated using the GEBR value in normal mode. The fixed protection distance is increased to increase the protection distance between the front and rear vehicles to reduce safety risks.

[0065] Furthermore, when VOBC determines that the skidding speed measurement is invalid, it sends the emergency braking reason to ATS. At this time, the train stops in the section. ATS issues a train detention command based on the emergency braking reason sent by VOBC, and the platform in the direction of the incoming train automatically detains the train. The TS system receives the emergency braking reason sent by VOBC and does not need to check the platform departure situation. This type of train detention can only be canceled manually.

[0066] The method of the present application is used to improve the intelligence level of the signal system processing response under wet track conditions, so as to cooperate with the driver to reduce the probability of slipping under wet track conditions and the probability of emergency braking due to invalid train speed measurement, thereby improving the system availability under wet track conditions.

[0067] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A train control method in a wet track scenario, characterized in that: The train control method comprises: The onboard VOBC uploads the train skidding alarm information to the central ATS system based on the collected vehicle processed skidding alarm information and / or signal side skidding alarm information; When the VOBC on the front vehicle reports the slip, zero speed, or degradation status information to the ZC / RC, the ZC / RC forwards the corresponding information to the VOBC on the nearest rear vehicle in the same section; The following vehicle sets or cancels the wet track mode based on remote and / or local manual operation.

2. The train control method according to claim 1, characterized in that: The alarm information sent by ZC / RC to the following vehicle includes: the train ahead in the section is slipping, the train ahead in the section is stopping, and the train ahead in the section is degrading.

3. The train control method according to claim 1, characterized in that: The following vehicles can remotely set or cancel the wet track mode including: When the train is at the CBTC-FAM / AM / CM or ABL-FAM / AM / CM level, the dispatcher sets the entry or exit of wet track mode in the central ATS system interface, including: Set the wet track mode for the entire line and cancel the wet track mode for the entire line; Set the wet track mode according to the section and cancel the entry into the wet track mode of the section; Set the wet track mode according to the open-air segment.

4. The train control method according to claim 3, characterized in that: The process of setting up wet track mode for the entire line includes: In the central ATS system, enter the full-line wet track mode - CBTC-FAM / AM / CM or ABL-FAM / AM / CM level; When the ZC / RC system receives the full-line wet track setting from the ATS system, it determines that the train is about to enter the wet track mode range and issues a wet track command, and sends the current MA withdrawal wet track distance mark to the VOBC; At the CBTC level, when the onboard VOBC receives the wet track command sent by the ZC / RC and the train has stopped at the mainline operation stop point, it will enter the wet track mode; The process of cancelling the entry into the full-line wet track mode includes: The central ATS system chooses to cancel the setting of the wet track mode for the entire line, and when the ZC / RC system receives the cancellation of the wet track mode for the entire line set through secondary confirmation from the ATS system, it forwards the cancellation instruction for the wet track mode for the entire line to the VOBC system, and the on-board VOBC controls the train to stop and then exit the wet track mode.

5. The train control method according to claim 3, characterized in that: The process of setting the wet track mode according to the interval includes: The wet track section is selected in the central ATS system based on the station diagram. When the ZC / RC system receives the wet track section set by the ATS system, it determines that the train is about to enter the wet track mode range and issues a wet track instruction, and sends the current MA withdrawal wet track distance mark to the VOBC; At the CBTC level, the onboard VOBC receives the wet track command sent by the ZC / RC and the train has stopped in the section, and enters the wet track mode; The process of cancelling entry into the interval wet track mode includes: Based on the station diagram, the wet track section cancellation selection is performed in the central ATS system. When the ZC / RC system receives the cancellation section wet track mode set by the ATS system through secondary confirmation, it forwards the cancellation section wet track mode cancellation instruction to the on-board VOBC system. The on-board VOBC controls the train to stop and then exit the wet track mode.

6. The train control method according to claim 1, characterized in that: The following train manually sets or cancels the wet track mode locally, including: the train is in CBTC-AM / CM, ITC-AM / CM or ABL, the driver stops the train section or stops on the platform, and sets the wet track mode through MMI operation. Includes: setting the full-line wet track mode through MMI and canceling the full-line wet track mode through MMI.

7. The train control method according to claim 6, characterized in that: The process of setting the full-line wet track mode through MMI includes: When ATP receives the application to enter the wet track mode and confirms that the train is in the zero speed state, ATP replies to MMI to enter the wet track mode; After the wet track mode is set successfully, the wet track mode icon will be displayed on the MMI main interface.

8. The train control method according to claim 6, characterized in that: The process of cancelling the full wet track mode via the MMI includes: When ATP receives the application for cancelling wet track and confirms that the train is at zero speed, it replies to MMI with the information that allows the wet track to be canceled, otherwise it does not reply with the permission information to MMI; When the MMI receives a reply from ATP confirming the cancellation of the wet track within the waiting confirmation time, the cancellation of the wet track operation is completed and the corresponding wet track icon is no longer displayed.

9. The train control method according to claim 1, characterized in that: When the onboard VOBC at the CBTC level receives the wet track mode command from the central ATS system, the train will enter the wet track mode after stopping at the mainline operation stop point and section; It also limits braking force, traction, and running speed, increases the difference between recommended speed and emergency speed, increases fixed protection distance, and increases the protection distance between front and rear vehicles.

10. The train control method according to claim 9, characterized in that: When VOBC determines that the skidding speed measurement is invalid, it sends the emergency braking reason to ATS. At this time, the train stops in the section. ATS issues a train detention command based on the emergency braking reason sent by VOBC, and the platform in the direction of the oncoming train automatically detains the train.