Train network-based flexible marshalling train on-board ATC master control detection method and system

Abstract

The application provides a train network-based flexible marshalling train vehicle-mounted ATC master control detection method and system, which comprises the following steps: S1: selecting a master ATC based on each marshalling train vehicle-mounted ATC; S2: the master ATC completes initialization based on the current train position and running direction, and controls train running by using the master ATC after initialization; and S3: in the process of train running, the vehicle-mounted master ATC is detected in real time based on a trackside system, and the master ATC is switched when it is necessary to switch the master ATC. The application aims to solve the problem that the train master control changes after flexible marshalling trains are re-marshalled, the vehicle-mounted ATC system cannot provide protection function, and the operation efficiency is reduced, has high reliability, is simple and easy to implement, and reduces the dependence on vehicle-mounted circuits.

Description

Technical Field

[0001] This invention relates to the field of rail transit signaling system technology, specifically to a method and system for detecting the onboard ATC master control of flexible train formations based on train networks. Background Technology

[0002] In the rail transit sector, to flexibly allocate vehicle carrying capacity based on passenger flow, flexible train formations are typically used to adjust train formation numbers and regulate capacity through coupling / decoupling. However, when flexible train formations are reassembled and recoupled, multiple onboard VATC (Vehicle-Action Control System) systems exist within the entire formation. If the master control of these onboard VATC systems cannot be unique and continuous, the signaling system cannot protect the reassembled trains, forcing them to operate in manual mode, significantly reducing the overall operational efficiency of the line. To address this issue, this invention provides a fully automated onboard VATC master control detection method for flexible train formations based on a train network, which is highly reliable and easy to implement.

[0003] Patent document CN114872758A (application number: 202210568616.3) discloses a master control selection system for a fully automatic flexible train formation onboard ATC, including a train master control circuit and onboard ATC master control logic. The train master control circuit includes: a master control enable relay, a master control train relay, a master control deactivation relay, and a master control train line. The master control enable relay and the master control train relay are interconnected with the onboard ATC, and the master control deactivation relay is interconnected with the master control train line. The onboard ATC master control logic includes output commands and input states. The output commands include master control enable commands and master control train commands. The input states include master control train relay feedback, master control deactivation relay feedback, master control train line status, train length status, and train mode status. Summary of the Invention

[0004] In view of the deficiencies in the existing technology, the purpose of this invention is to provide a method and system for detecting the onboard ATC master control of flexible train formations based on train networks.

[0005] The present invention provides a method for detecting the onboard ATC master control of a flexible train formation based on a train network, comprising:

[0006] Step S1: Select the main control ATC based on the onboard ATC of each train set;

[0007] Step S2: The main control ATC completes initialization based on the current train position and direction of travel. After initialization, the main control ATC is used to control the train's operation.

[0008] Step S3: During train operation, the onboard main control ATC is monitored in real time based on the trackside system. When it is necessary to switch the main control ATC, the main control ATC is switched.

[0009] Preferably, step S1 is as follows: when the on-board system is powered on, the on-board ATC reads the vehicle number of the on-board system; the ATC detects the number of train formations according to the train length detection circuit, and the on-board ATC system of each formation establishes communication with the vehicle management system TMS through the vehicle network and sends the vehicle number of the on-board ATC and the status of the on-board ATC system. The vehicle management system TMS receives the vehicle numbers sent by each formation ATC, summarizes them, and returns them to each formation ATC. The on-board ATC retrieves the on-board system status of each formation, finds that the on-board ATC with the smallest vehicle number is the main control system, and that the system status meets the preset conditions.

[0010] Preferably, step S2 involves: identifying the train's position and direction of travel using ground-based positioning equipment; the main control ATC completing initialization based on the currently identified train position and direction of travel; and the trackside system registering the backup ATC.

[0011] Preferably, step S3 involves: the current master ATC receiving the master control train number sent by the trackside system and determining whether the master control train number is valid; if invalid, the current master control train is maintained; if valid, the current master control ATC sets the train number selected by the trackside system as the master control ATC, the original master control ATC relinquishes master control, and the ATC system that takes over the master control continues to control the train to continue running.

[0012] Preferably, step S3 involves the following: the non-master control onboard ATC is in standby mode and will not send control commands. When the master control ATC fails, the non-master control onboard ATC can take over the control of the train at any time.

[0013] Preferably, step S3 is as follows: If the current master ATC and the trackside system lose communication, but communication with the vehicle management system is normal, the trackside system selects another train's onboard ATC to take over master control; the current master ATC determines other ATCs sending master control requests by receiving messages from the vehicle management system TMS, and continues to maintain master control until the switchover countdown ends. The selected master ATC system synchronously takes over master control and completes the master ATC switchover. If the current master ATC does not detect any other onboard ATC requesting master control, it continues to maintain master control and control the train operation.

[0014] According to the present invention, a flexible train formation onboard ATC master control and detection system based on a train network includes:

[0015] Module M1: Selects the main control ATC based on the onboard ATC of each train formation;

[0016] Module M2: The main control ATC completes initialization based on the current train position and direction of travel. After initialization, the main control ATC is used to control the train's operation.

[0017] Module M3: During train operation, the onboard main control ATC is monitored in real time based on the trackside system. When it is necessary to switch the main control ATC, the main control ATC is switched.

[0018] Preferably, module M1 employs the following method: when the onboard system is powered on, the onboard ATC reads the vehicle number from the onboard system; the ATC detects the number of train formations based on the train length detection circuit; each formation's onboard ATC system establishes communication with the vehicle management system (TMS) through the vehicle network and sends the vehicle number and system status of the onboard ATC; the TMS receives and summarizes the vehicle numbers sent by each formation's ATC and returns them to each formation's ATC; the onboard ATC retrieves the system status of each formation's onboard system, and the onboard ATC with the smallest vehicle number is the main control system.

[0019] Preferably, the module M2 adopts the following approach: the train position and direction of travel are identified by ground positioning equipment, the main control ATC completes initialization based on the currently identified train position and direction of travel, and the trackside system completes registration of the backup ATC.

[0020] Preferably, module M3 adopts the following method: the current master ATC receives the master control train number sent by the trackside system and determines whether the master control train number is valid; if invalid, it continues to maintain the current master control train; if valid, the current master ATC sets the train number selected by the trackside system as the master ATC, the original master ATC relinquishes master control, and the ATC system that takes over the master control continues to control the train to continue running.

[0021] The module M3 adopts the following: the non-master control on-board ATC is in standby mode and will not send control commands. When the master control ATC fails, the non-master control on-board ATC will take over the train control at any time.

[0022] The module M3 employs the following approach: If the current master ATC loses communication with the trackside system but maintains normal communication with the vehicle management system, the trackside system selects another train's onboard ATC to take over master control. The current master ATC determines whether other ATCs have sent master control requests by receiving messages from the vehicle management system's TMS, and continues to maintain master control until the switchover countdown ends. The selected master ATC system then synchronously takes over master control, completing the master ATC switchover. If the current master ATC does not detect any other onboard ATC requesting master control, it continues to maintain master control and control the train's operation.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The vehicle-mounted ATC main control detection design of this invention is based on software algorithms and vehicle networks, does not rely on vehicle circuits, is simple to design, has high availability and is easy to expand.

[0025] 2. This invention supports manual or automatic selection of the on-board main control ATC system by the trackside system, provides multiple reverse switching main control ATC detection mechanisms, and has high operational flexibility.

[0026] 3. The present invention has a reasonable structure, ingenious design, low cost and easy maintenance. Attached Figure Description

[0027] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0028] Figure 1 A schematic diagram illustrating the flexible train coupling method.

[0029] Figure 2 A flowchart of the onboard ATC main control detection method for flexible train formation based on train network.

[0030] Figure 3 The flowchart for powering up and controlling the onboard ATC of the train for flexible train formation, including detection, identification, positioning, and direction of travel, and initialization.

[0031] Figure 4 Flowchart of the main control onboard ATC test after initialization for flexible train formation.

[0032] Figure 5 Flowchart of the main control onboard ATC switching process after initialization for flexible train formation. Detailed Implementation

[0033] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0034] Example 1

[0035] According to the present invention, a method for detecting the onboard ATC master control of a flexible train formation based on a train network is provided, such as... Figure 2 As shown, it includes: the train's onboard ATC main control logic, vehicle management system, vehicle network, and train length detection;

[0036] Step S1: After the onboard ATC system is powered on, the ATC detects the number of train formations based on the train length detection circuit. Each train formation's onboard ATC system establishes communication with the Vehicle Management System (TMS) after powering on, sending the vehicle number where the onboard ATC is located. The TMS receives all onboard ATC information through the vehicle network and sends it to each train formation's ATC. The onboard ATC identifies the one with good equipment status and the smallest vehicle number as the main control system. This allows the implementation of the flexible train formation onboard ATC main control detection method based on the train network of this invention. The Vehicle Management System (TMS) is deployed in each train formation to control train equipment (e.g., doors, air conditioning, lighting, traction and braking). The onboard ATC communicates with it through a network interface to detect the main control ATC and control train operation.

[0037] Step S2: The onboard driver uses the main control ATC mentioned above to control the train's operation. After passing the positioning device (beacon) installed on the ground and identifying the train's position and direction of travel, the onboard ATC system sends an initialization request and completes the initialization.

[0038] Step S3: All onboard ATCs receive the master control car number sent by the trackside system and determine its validity. If invalid, the current master control car remains in place. If valid, the onboard ATC sets the train number selected by the trackside system as the master control ATC, the original master control ATC relinquishes control, and the master control ATC system continues to control the train. Non-master control onboard ATCs are in standby mode and do not send control commands. They can take over train control at any time if the master control ATC fails.

[0039] Step S4: When a master control switch occurs, the current master ATC determines whether communication with the trackside has been lost. At this time, the trackside system selects another train's onboard ATC as the master control. The current master ATC determines whether other ATCs have sent master control requests by receiving messages from the vehicle management system (TMS). It maintains master control until the switch countdown ends. The selected master ATC system takes over the master control and completes the master control switch. If the current master ATC does not detect any other onboard ATC requesting master control, it continues to maintain master control to control train operation.

[0040] More specifically, such as Figure 1 , Figure 3As shown, after the onboard system is powered on, the onboard ATC reads the system configuration (such as the car number) and parses the database, then enters the ready state. The ATC detects the number of train cars based on the train length detection circuit. Each car's onboard ATC establishes communication with the Vehicle Management System (TMS) and sends its current car number. The TMS collects the information sent by each car's onboard ATC and replies to the onboard ATC. The onboard ATC searches for the car numbers of each car's onboard ATC and determines the communication status, identifying the smallest available car number. First, the onboard ATC determines the number of train cars. If it is a single-car train, the current onboard ATC is set as the master car. If it is a multi-car train, the onboard ATC with the smallest car number is set as the master car. Afterwards, the onboard driver can control the train to operate in manual mode. The train's position and direction of travel are identified by the positioning equipment installed on the ground. The onboard ATC then sends an initialization request and completes initialization.

[0041] like Figure 4 The ATC receives the master control car number sent by the trackside system and determines whether the master control car number is valid. If invalid, the current master control car is retained; if valid, the onboard ATC receives the selected master control car and sets the trackside-selected onboard ATC as the master control unit. Each train's onboard ATC sends its master control status to the vehicle management system and receives the onboard ATC number and master control status of each train from the vehicle management system. If the ATC determines that the master control status request is valid and the ATC device number is different from the current onboard ATC device number, other onboard ATCs can then request master control; otherwise, the current onboard ATC continues to maintain master control.

[0042] like Figure 5 As shown, the vehicle-mounted ATC executes the following switching logic based on the identified master ATC: the original master ATC relinquishes its master control, and the newly identified master ATC takes over the master control.

[0043] Each train's onboard ATC determines whether it is currently the main control unit:

[0044] If the vehicle's onboard ATC is not the master control unit, clear the master control status;

[0045] If the current vehicle's onboard ATC is the master control unit, then determine whether the current vehicle's ATC and the trackside system are communicating normally; if it is determined that the communication with the trackside system is normal, maintain the current vehicle's ATC master control status.

[0046] If it is determined that communication with the trackside system has been lost, further determine whether communication with the vehicle management system is normal.

[0047] If the communication between the vehicle management system and the system is normal, and the vehicle ATC of another vehicle as determined above requests master control, the current master ATC will start a countdown to switch over until it ends, relinquishes master control and clears the master control request status, and the vehicle ATC of another vehicle becomes the new master ATC; if the vehicle ATC of another vehicle as determined above does not request master control, the current master ATC status will be maintained.

[0048] If communication between the system and the vehicle management system is lost, a double failure occurs, and the current onboard ATC relinquishes control. The onboard ATCs of other train formations will then be selected as the new control unit.

[0049] The present invention also provides a train network-based flexible train onboard ATC master control detection system. The train network-based flexible train onboard ATC master control detection system can be implemented by executing the process steps of the train network-based flexible train onboard ATC master control detection method. That is, those skilled in the art can understand the train network-based flexible train onboard ATC master control detection method as a preferred embodiment of the train network-based flexible train onboard ATC master control detection system.

[0050] Those skilled in the art will understand that, besides implementing the system and its various devices, modules, and units provided by this invention in the form of purely computer-readable program code, the same functions can be achieved entirely through logical programming of the method steps, making the system and its various devices, modules, and units of this invention function in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers. Therefore, the system and its various devices, modules, and units provided by this invention can be considered as a hardware component, and the devices, modules, and units included therein for implementing various functions can also be considered as structures within the hardware component; alternatively, the devices, modules, and units for implementing various functions can be considered as both software modules implementing the method and structures within the hardware component.

[0051] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A detection method for onboard ATC master control of flexible train formations based on train networks, characterized in that, include: Step S1: Select the main control ATC based on the onboard ATC of each train set; Step S2: The main control ATC completes initialization based on the current train position and direction of travel. After initialization, the main control ATC is used to control the train's operation. Step S3: During train operation, the onboard main control ATC is monitored in real time based on the trackside system. When it is necessary to switch the main control ATC, the main control ATC is switched. Step S3 is as follows: If the current master ATC loses communication with the trackside system but communicates normally with the vehicle management system, the trackside system selects another train's onboard ATC to take over master control. The current master ATC determines other ATCs' master control requests by receiving messages from the vehicle management system's TMS and continues to maintain master control until the switchover countdown ends. The selected master ATC system then synchronously takes over master control to complete the master ATC switchover. If the current master ATC does not detect any other onboard ATC requesting master control, it continues to maintain master control to operate the train.

2. The method for detecting the onboard ATC master control of a flexible train formation based on a train network according to claim 1, characterized in that, Step S1 is as follows: When the on-board system is powered on, the on-board ATC reads the vehicle number from the on-board system; the ATC detects the number of train formations according to the train length detection circuit; each formation's on-board ATC system establishes communication with the vehicle management system (TMS) through the vehicle network and sends the vehicle number and on-board ATC system status; the vehicle management system (TMS) receives the vehicle numbers sent by each formation's ATC, summarizes them, and returns them to each formation's ATC; the on-board ATC retrieves the on-board system status of each formation, finds that the on-board ATC with the smallest vehicle number is the main control system, and that the system status meets preset conditions.

3. The method for detecting the onboard ATC master control of a flexible train formation based on a train network according to claim 1, characterized in that, Step S2 involves: identifying the train's position and direction of travel using ground-based positioning equipment; the main ATC completing initialization based on the currently identified train position and direction of travel; and the trackside system registering the backup ATC.

4. The method for detecting the onboard ATC master control of a flexible train formation based on a train network according to claim 1, characterized in that, Step S3 involves the following steps: The current master ATC receives the master control train number sent by the trackside system and determines whether the master control train number is valid. If invalid, the current master control train number is maintained. If valid, the current master control ATC sets the train number selected by the trackside system as the master control ATC, and the original master control ATC relinquishes its master control and takes over the ATC system to control the train to continue running.

5. The method for detecting the onboard ATC master control of a flexible train formation based on a train network according to claim 1, characterized in that, Step S3 adopts the following approach: the non-master control onboard ATC is in standby mode and will not send control commands. When the master control ATC fails, the non-master control onboard ATC will take over the control of the train at any time.

6. A flexible train formation onboard ATC main control and detection system based on train network, characterized in that, include: Module M1: Selects the main control ATC based on the onboard ATC of each train formation; Module M2: The main control ATC completes initialization based on the current train position and direction of travel. After initialization, the main control ATC is used to control the train's operation. Module M3: During train operation, the onboard main control ATC is monitored in real time based on the trackside system. When it is necessary to switch the main control ATC, the main control ATC is switched. The module M3 employs the following approach: If the current master ATC loses communication with the trackside system but maintains normal communication with the vehicle management system, the trackside system selects another train's onboard ATC to take over master control. The current master ATC determines whether other ATCs have sent master control requests by receiving messages from the vehicle management system's TMS, and continues to maintain master control until the switchover countdown ends. The selected master ATC system then synchronously takes over master control, completing the master ATC switchover. If the current master ATC does not detect any other onboard ATC requesting master control, it continues to maintain master control and control the train's operation.

7. The onboard ATC main control and detection system for flexible train formation based on train network according to claim 6, characterized in that, The module M1 employs the following method: When the onboard system is powered on, the onboard ATC reads the vehicle number from the onboard system; the ATC detects the number of train formations based on the train length detection circuit; each train formation's onboard ATC system establishes communication with the vehicle management system (TMS) through the vehicle network and sends the vehicle number and system status of the onboard ATC; the TMS receives and summarizes the vehicle numbers sent by each train formation's ATC and returns them to each train formation's ATC; the onboard ATC retrieves the system status of each train formation, finds that the onboard ATC with the smallest vehicle number meets preset conditions, and identifies it as the main control system.

8. The onboard ATC main control and detection system for flexible train formation based on train network according to claim 6, characterized in that, The module M2 adopts the following approach: the train's position and direction of travel are identified through ground positioning equipment, the main control ATC completes initialization based on the currently identified train position and direction of travel, and the trackside system completes registration with the backup ATC.

9. The onboard ATC main control and detection system for flexible train formation based on train network according to claim 6, characterized in that, The module M3 adopts the following approach: the current master ATC receives the master control train number sent by the trackside system and determines whether the master control train number is valid; if invalid, it continues to maintain the current master control train; if valid, the current master ATC sets the train number selected by the trackside system as the master ATC, the original master ATC relinquishes master control, and the ATC system takes over the master control to control the train to continue running. The module M3 adopts the following configuration: the non-master control on-board ATC is in standby mode and will not send control commands. When the master control ATC fails, the non-master control on-board ATC will take over the control of the train at any time.

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