Urban rail transit CBTC system turn-back operation control method

Abstract

The invention belongs to the technical field of railway signal control, and discloses a turn-back operation control method for an urban rail transit CBTC (Communication Based Train Control) system. In the invention, when the train needs to turn back at any point of an interval in an emergency scene, a dispatcher remotely controls the train to stop on a central ATS (Automatic Train Station) workstation, automatically changes the end of the train, manually unlocks the forward route of the train, and can reversely run to the previous station without degrading by setting a new destination code or manually handling the reverse running route. In the train turn-back process, the trackside interlocking system provides hostile route protection for the train, and other trains are prevented from entering a turn-back path; the trackside ZC system provides safe movement authorization for the turn-back train, so that the safety of turn-back operation is improved; especially in a full-automatic operation line, the train is allowed to automatically operate and return to the previous platform for evacuation, the fault processing time is shortened, and the operation flexibility is improved.

Description

TECHNICAL FIELD

[0001] The present application mainly relates to the field of railway signal control technology, in particular to a kind of urban rail transit CBTC system turn-back operation control method. BACKGROUND

[0002] In urban rail transit CBTC system, train relies on mobile authorization operation, and mobile authorization calculation relies on interlocking locking train route, and route can be normally unlocked after train passing.When train runs in front of partial area fault cannot normally run, train cannot automatically reverse and run back to the last platform.

[0003] Especially on full-automatic operation line, when train runs in front of line fault cannot continue to pass due to waterlogging, fire and the like, it needs to turn back and run back to the last platform, since train does not completely pass route, section in front of train running in route cannot be unlocked, interlocking cannot handle reverse running route, ZC cannot calculate mobile authorization for train, at this time, staff manually drive train to reverse and run, increase fault handling time, and train running safety cannot be guaranteed. SUMMARY

[0004] The present application provides a kind of urban rail transit CBTC system turn-back operation control method, to realize train at any place in section turn-back, trackside real-time for train calculates the mobile authorization of returning to the last platform, thereby improve the fault handling efficiency and train running safety in emergency scene.

[0005] To achieve the above purpose, the present application provides a kind of urban rail transit CBTC system turn-back operation control method, comprising the following steps: Step S1: when confirming that train runs in front of line fault cannot continue to pass, ATS workstation sends turn-back end change remote command to vehicle-mounted VOBC; Step S2: after vehicle-mounted VOBC checks that current running level is satisfied, control train to brake and stop, automatically switch running direction, and apply holding brake; Step S3: ATS workstation issues residual route unlocking command to trackside interlocking system; Step S4: after trackside interlocking system checks that train running direction has been switched and stopped, unlock train running front route section; Step S5: ATS workstation arranges reverse route for turn-back train, or automatically triggers reverse route according to new destination code set by train; Step S6: trackside interlocking system handles reverse running route, and trackside ZC system sends reverse running mobile authorization to train; Step S7: train automatically runs back to the last platform according to new destination code and mobile authorization of trackside ZC system.

[0006] Furthermore, in step S2, the onboard VOBC checks the current operating level and only processes remote commands for turnaround switching in automatic operating mode.

[0007] Furthermore, in step S2, after the onboard VOBC completes the turnaround and end-switching, it maintains its own mode unchanged within the configured time and sends new end activation information to the trackside ZC system.

[0008] Furthermore, in step S4, the check and setting conditions for the trackside interlocking system to perform the remaining route unlocking must simultaneously meet the following conditions: Condition 1: The middle section of the route is idle; Condition 2: Trains occupying adjacent sections are in a stationary state; Condition 3: The train's direction of travel is opposite to the direction of the section locking.

[0009] Furthermore, in step S6, the trackside interlocking system sets the conditions for checking the reverse route, including the presence of a train running in the opposite direction in the route and the train being in a stopped state.

[0010] Furthermore, the interaction processes between the ATS workstation, onboard VOBC, trackside interlocking system, and trackside ZC system include: The interaction process between the ATS workstation, onboard VOBC, trackside interlocking system, and trackside ZC system includes: Step K1: The central ATS sends a remote command to the vehicle-mounted VOBC to switch back to the terminal. Step K2: The onboard VOBC controls the train to brake and come to a complete stop, automatically switches ends, and maintains the current control mode; Step K3: The onboard VOBC sends train stopping and running direction information to the trackside ZC system; Step K4: The trackside ZC system sends information on the train's stopping and running direction in the logical section to the trackside interlocking system; Step K5: The ATS workstation sends the remaining route unlocking command to the trackside interlocking system; Step K6: The trackside interlocking system checks the set conditions. If they are met, the remaining routes are unlocked. Step K7: The trackside interlocking system sends the route unlock status to the ATS workstation; Step K8: The ATS workstation sends a reverse route processing command to the trackside interlocking system; Step K9: The trackside interlocking system checks the set conditions. If they are met, it locks the route and switches the locking direction of the section occupied by the train. Step K10: The trackside interlocking system sends the route section locking status to the trackside ZC system; Step K11: The trackside ZC system sends a movement authorization to the onboard VOBC to return to the previous station; Step K12: The onboard VOBC starts the train and automatically returns to the previous platform. Beneficial Effects: This invention provides a turnaround operation control method for urban rail transit CBTC systems. Compared with existing technologies, in this invention, when a train needs to turn around at any point in an emergency, the dispatcher remotely controls the train to stop and automatically switch ends at the central ATS workstation, manually unlocks the train's forward route, and sets a new destination code or manually processes a reverse route, allowing the train to reverse to the previous platform without downgrading. During the train turnaround process, the trackside interlocking system provides protection against hostile routes, preventing other trains from entering the turnaround path; the trackside ZC system provides safe movement authorization for the turnaround train, improving the safety of turnaround operations; especially in fully automated operation lines, this invention allows the train to automatically return to the previous platform for evacuation, reducing fault handling time and improving operational flexibility. Attached Figure Description

[0011] Fig. 1 This is a schematic diagram of the train turnaround operation process according to an embodiment of the present invention; Fig. 2 This is an interactive flowchart of the turnaround operation system involved in the embodiments of the present invention; Fig. 3 This is a flowchart of the turnaround operation control method for urban rail transit CBTC system according to an embodiment of the present invention. Detailed Implementation

[0012] The preferred mechanisms and implementation methods of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0013] like Figs. 1 to 3 As shown in the figure, this invention discloses a technical solution for a turnaround operation control method for urban rail transit CBTC system.

[0014] The ATS system is a non-safety equipment system (SIL2), mainly composed of two parts: the central ATS system and the station ATS system. It includes the control center system and the centralized control station ATS equipment. The central equipment includes dispatcher workstations, dispatch chief workstations, training simulators, control screens, FAS and SCAD detection systems, and application equipment such as timetable and timetable generators. It connects to platform terminals and operator control consoles via local area networks and hubs. ATS systems are widely used in rail transit management to automatically monitor and control train operations on the line.

[0015] Onboard VOBC refers to the controller installed on the train, responsible for the real-time control and monitoring of the train. It controls the opening and closing of doors by sending commands and communicates with other systems (such as area controllers and interlocking systems) to ensure the safe operation of the train.

[0016] The Zone Controller (ZC) of the trackside system is the trackside component of the ATP subsystem in the CBTC system, often referred to as the ground-based ATP equipment. It is the core ground control device in the CBTC system and the hub for vehicle-to-ground information processing. The ZC subsystem is primarily responsible for calculating and generating movement authorizations for trains within its control area based on the location information reported by the communicating trains, the routes arranged by the interlocking system, and the track occupancy / vacancy information provided by the trackside equipment, ensuring the safe operation of trains within its control area.

[0017] Example 1: This embodiment of the invention provides a turnaround operation control method for urban rail transit CBTC system. The dispatcher remotely controls the train turnaround terminal on the central ATS workstation, unlocks the train's forward route, and processes the directional route, realizing turnaround operation at any point in emergency scenarios. The system provides safety protection for train operation.

[0018] The overall process is as follows Fig. 3 As shown, a turnaround operation control method for an urban rail transit CBTC system includes the following specific steps: Step S1: When it is confirmed that the line ahead of the train is faulty and cannot continue to pass, the ATS workstation sends a remote command to the onboard VOBC to turn back and switch ends.

[0019] Step S2: After the onboard VOBC checks that the current operating level is met, it controls the train to brake and stop, automatically switches the running direction, and applies the holding brake; In step S2, the onboard VOBC checks the current operating level and only processes remote commands for turnaround switching in automatic operation mode.

[0020] In step S2, after the onboard VOBC completes the turnaround and end-switching, it maintains its own mode unchanged within the configured time and sends new end activation information to the trackside ZC system.

[0021] Step S3: The ATS workstation issues the remaining route unlocking command to the trackside interlocking system.

[0022] Step S4: After the trackside interlocking system checks that the train's running direction has been switched and the train has come to a complete stop, it unlocks the section of the route ahead for the train to run. In step S4, the check and setting conditions for the trackside interlocking system to perform the remaining route unlocking must simultaneously meet the following conditions: Condition 1: The middle section of the route is idle; Condition 2: Trains occupying adjacent sections are in a stationary state; Condition 3: The train's direction of travel is opposite to the direction of the section locking.

[0023] Step S5: The ATS workstation arranges a reverse route for the turnaround train, or automatically triggers a reverse route based on the new destination code set for the train; Step S6: The trackside interlocking system processes the reverse route, and the trackside ZC system sends a reverse movement authorization to the train; In step S6, the trackside interlocking system sets the conditions for checking the reverse route, including the presence of a train running in the opposite direction in the route and the train being in a stopped state.

[0024] Step S7: The train automatically returns to the previous platform based on the new destination code and the movement authorization of the trackside ZC system.

[0025] The urban rail transit CBTC system turnaround operation control method provided in this embodiment of the invention includes the following interaction flow between various systems: Fig. 2 As shown, the interaction process between the ATS workstation, onboard VOBC, trackside interlocking system, and trackside ZC system includes: Step K1: The central ATS sends a remote command to the vehicle-mounted VOBC to switch back to the terminal. Step K2: The onboard VOBC controls the train to brake and come to a complete stop, automatically switches ends, and maintains the current control mode; Step K3: The onboard VOBC sends train stopping and running direction information to the trackside ZC system; Step K4: The trackside ZC system sends information on the train's stopping and running direction in the logical section to the trackside interlocking system; Step K5: The ATS workstation sends the remaining route unlocking command to the trackside interlocking system; Step K6: The trackside interlocking system checks the set conditions. If they are met, the remaining routes are unlocked. Step K7: The trackside interlocking system sends the route unlock status to the ATS workstation; Step K8: The ATS workstation sends a reverse route processing command to the trackside interlocking system; Step K9: The trackside interlocking system checks the set conditions. If they are met, it locks the route and switches the locking direction of the section occupied by the train. Step K10: The trackside interlocking system sends the route section locking status to the trackside ZC system; Step K11: The trackside ZC system sends a movement authorization to the onboard VOBC to return to the previous station; Step K12: The onboard VOBC starts the train and automatically returns to the previous platform.

[0026] Example 2: This embodiment of the invention is basically the same as Example 1, except that it provides a method for reversing operation in an emergency scenario. When there is a fault on the preceding line, the system allows the dispatcher to remotely control the train to stop and change ends, unlock the train's forward route, and process the reverse route. Manual remote dispatching then completes the automatic return of the train to the previous platform for passenger evacuation. The specific process of this embodiment is as follows: Step S1: When an emergency such as a fire occurs at the platform ahead of the train and the train cannot enter the station, the dispatcher sends a remote command to the train to turn back and switch stations through the central ATS workstation. Step S2: The onboard VOBC determines that it is currently in automatic operation mode, controls the train to stop in the section, and completes the end-to-end change and changes the direction of travel; Step S3: The dispatcher unlocks the remaining route via the ATS workstation, and the trackside interlocking system unlocks the remaining route ahead of the train. Step S4: The dispatcher sets the train destination code, or manually processes the reverse route, and the trackside interlocking system completes the route locking; Step S5: The trackside ZC system calculates a new movement authorization for the train. After receiving the movement authorization, the onboard VOBC starts the train to automatically run to the previous platform.

[0027] This invention provides a turnaround operation control method for urban rail transit CBTC system. The dispatcher remotely controls the train turnaround terminal at the central ATS workstation, unlocks the train's forward route, and processes the directional route, enabling turnaround operation at any point in emergency scenarios. The system provides safety protection for train operation.

[0028] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for turnaround operation control in an urban rail transit CBTC system, characterized in that, Includes the following steps: Step S1: When it is confirmed that the train cannot continue to pass due to a track fault ahead, the ATS workstation sends a remote command to the onboard VOBC to turn back and switch terminals. Step S2: After the onboard VOBC checks that the current operating level is met, it controls the train to brake and stop, automatically switches the running direction, and applies the holding brake; Step S3: The ATS workstation issues the remaining route unlocking command to the trackside interlocking system; Step S4: After the trackside interlocking system checks that the train's running direction has been switched and the train has come to a complete stop, it unlocks the section of the route ahead for the train to run. Step S5: The ATS workstation arranges a reverse route for the turnaround train, or automatically triggers a reverse route based on the new destination code set for the train; Step S6: The trackside interlocking system processes the reverse route, and the trackside ZC system sends a reverse movement authorization to the train; Step S7: The train automatically returns to the previous platform based on the new destination code and the movement authorization of the trackside ZC system.

2. The urban rail transit CBTC system turnaround operation control method according to claim 1, characterized in that, In step S2, the onboard VOBC checks the current operating level and only processes remote commands for turnaround switching in automatic operating mode.

3. The urban rail transit CBTC system turnaround operation control method according to claim 1, characterized in that, In step S2, after the onboard VOBC completes the turnaround and end-switching, it maintains its own mode unchanged within the configured time and sends new end activation information to the trackside ZC system.

4. The urban rail transit CBTC system turnaround operation control method according to claim 1, characterized in that, In step S4, the check and setting conditions for the trackside interlocking system to perform the remaining route unlocking must simultaneously meet the following conditions: Condition 1: The middle section of the route is idle; Condition 2: Trains occupying adjacent sections are in a stationary state; Condition 3: The train's direction of travel is opposite to the direction of the section locking.

5. The urban rail transit CBTC system turnaround operation control method according to claim 1, characterized in that, In step S6, the trackside interlocking system sets the conditions for checking the reverse route, including the presence of a train running in the opposite direction in the route and the train being in a stopped state.

6. The urban rail transit CBTC system turnaround operation control method according to claim 1, characterized in that, The interaction process between the ATS workstation, onboard VOBC, trackside interlocking system, and trackside ZC system includes: Step K1: The central ATS sends a remote command to the vehicle-mounted VOBC to switch back to the terminal. Step K2: The onboard VOBC controls the train to brake and come to a complete stop, automatically switches ends, and maintains the current control mode; Step K3: The onboard VOBC sends train stopping and running direction information to the trackside ZC system; Step K4: The trackside ZC system sends information on the train's stopping and running direction in the logical section to the trackside interlocking system; Step K5: The ATS workstation sends the remaining route unlocking command to the trackside interlocking system; Step K6: The trackside interlocking system checks the set conditions. If they are met, the remaining routes are unlocked. Step K7: The trackside interlocking system sends the route unlock status to the ATS workstation; Step K8: The ATS workstation sends a reverse route processing command to the trackside interlocking system; Step K9: The trackside interlocking system checks the set conditions. If they are met, it locks the route and switches the locking direction of the train-occupied section. Step K10: The trackside interlocking system sends the route section locking status to the trackside ZC system; Step K11: The trackside ZC system sends a movement authorization to the onboard VOBC to return to the previous station; Step K12: The onboard VOBC starts the train and automatically returns to the previous platform.

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