A method for continuous train tracking under ATP monitoring failure

Abstract

The present invention discloses a method for continuous train tracking under ATP monitoring failure. An ATP tracking mode is added between the ATP control mode and the ATP removal mode: the ATP system does not provide train monitoring for the train, but continuously provides continuous train positioning; when the ATP monitoring fails, the ATP tracking mode is entered. The present invention can continuously provide continuous train tracking when the on-board ATP train monitoring fails.

Description

Technical Field

[0001] The present invention relates to the technical field of train tracking. Background Art

[0002] The rail transit industry is a safety-critical industry. The train positioning function is a prerequisite for core safety protection (ATP) functions such as vehicle body protection, train safety interval guarantee, and train movement authorization.

[0003] Train control has ATP control mode (such as RM, CM, ATO) and ATP removal mode (vehicle takeover). In the actual CBTC (communication-based train automatic control system) system operation process, the on-board ATP equipment provides continuous train tracking, and the system maintains efficient mobile block operation; but when the on-board ATP equipment has a hardware failure, the on-board ATP will take a fault-oriented safety response to shut down or get stuck. The common practice is to cut off the ATP, the operator performs the ATP removal operation, and bypasses the on-board ATP equipment for the train control circuit, and cuts off the power supply of the ATP equipment, and the train is manually driven and operated. At this time, train tracking is handled by the trackside axle counting, track circuit or manual processing. The train cannot provide continuous positioning, and the operating efficiency and safety are greatly reduced. Summary of the invention

[0004] The object of the present invention is to provide a method for continuous train tracking under ATP monitoring failure, which can continuously provide continuous train tracking when the on-board ATP train monitoring fails.

[0005] The technical solution to achieve the above purpose is:

[0006] A method for continuous train tracking under ATP monitoring failure, wherein an ATP tracking mode is added between the ATP control mode and the ATP removal mode: in the ATP tracking mode, the system does not provide train hardware monitoring for the train, but continuously provides train continuous positioning;

[0007] When a train hardware monitoring fault is detected in the ATP control mode, the ATP tracking mode is entered.

[0008] Preferably, the ATP system does not provide train hardware monitoring for the train, which means that the train control is switched from signal control to on-board control.

[0009] Preferably, when a train hardware monitoring fault is found in the ATP control mode, the ATP tracking mode is entered, which means:

[0010] When a fault occurs in the train control interface module, after the onboard ATP takes a fault-guided safety response, the driver can switch to the ATP tracking mode through the lead seal knob and enter the ATP tracking mode by double confirmation of the synchronization mode status trackside.

[0011] Preferably, in ATP tracking mode, the train continuously supplies power to the onboard ATP, and the onboard ATP tolerates all input and output failures and continues to provide continuous positioning and tracking of the train.

[0012] Preferably, in the ATP tracking mode, when the train integrity is lost, the on-board ATP is powered off, and the train hardware circuit implements fault-guided safety in this scenario; in the ATP control mode and ATP cut-off mode, when the train integrity is lost, the on-board ATP is not powered off, and the ATP software implements fault-guided safety in this scenario.

[0013] Preferably, the train power supply is connected to the onboard ATP via parallel A contacts and B contacts;

[0014] When entering ATP tracking mode, control contact A is disconnected;

[0015] When train integrity is lost, the control B contact is opened.

[0016] The beneficial effects of the present invention are as follows: the present invention greatly improves the availability of the train ATP continuous train tracking function by adding an ATP tracking mode between the ATP control mode and the ATP removal mode for continuous supervision, thereby improving the overall safety and efficiency performance of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of entering the ATP tracking mode in the present invention;

[0018] Figure 2 It is a schematic diagram of the on-board power supply and train integrity monitoring in the present invention. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] The method for continuous train tracking under ATP monitoring failure of the present invention adds an ATP tracking mode between the ATP control mode and the ATP removal mode: in the ATP tracking mode, the system does not provide train hardware monitoring for the train, but continues to provide continuous train positioning. The ATP system does not provide train hardware monitoring for the train, which means that the train control is switched from signal control to on-board control.

[0021] When a train hardware monitoring fault is detected in the ATP control mode, the ATP tracking mode is entered. Specifically, when a train control interface module fails, the on-board ATP takes a fault-oriented safety response, and the driver can switch to the ATP tracking mode through the lead seal knob, and enter the ATP tracking mode by double confirmation of the synchronous mode status on the trackside. In the ATP tracking mode, the train continues to power the on-board ATP unit. In this mode, the on-board ATP tolerates all input and output faults and continues to provide continuous positioning and tracking of the train. Since all input and output faults are tolerated, train integrity supervision, a key factor in train tracking, requires an alternative solution. The train integrity status is circuit-interlocked with the train ATP power supply in the train monitoring mode.

[0022] In the ATP tracking mode, when the train integrity is lost, the on-board ATP is powered off in this mode, and the fault-guided safety in this scenario is implemented by the train hardware circuit to ensure that the train integrity does not provide erroneous positioning; in the ATP control mode and ATP removal mode, when the train integrity is lost, the on-board ATP is not powered off, and the fault-guided safety in this scenario is implemented by the ATP software.

[0023] In addition, the redundancy of monitoring-related functional modules can be improved at the hardware level, such as sensor interface modules, which greatly improves the availability of monitoring modules, thereby achieving continuous CBTC train tracking in the event of a vehicle control module failure, and improving the overall ability to operate efficiently and safely. At the same time, because redundant modules are added selectively, sensors and installation space can be reused, so that continuous ATP train tracking of the same level can be achieved at a low cost without adding a separate set of ATP equipment.

[0024] like Figure 1 As shown in the figure, when the train enters the ATP tracking mode, all ATP control interface circuits are disconnected through the lead seal knob, and the vehicle takes over the control vehicle. In the ATP train tracking mode, all train control interface related faults are ignored; in the on-board train tracking mode, the train operator and the trackside continue to provide the train position information calculated by the sensor.

[0025] like Figure 2 As shown, the train power supply is connected to the onboard ATP through the parallel A contact and B contact. After entering the ATP tracking mode, the A contact is disconnected to ensure:

[0026] 1) In ATP tracking mode, if the train integrity is lost, the B contact is disconnected, ATP loses power, and train tracking is no longer provided;

[0027] 2) In ATP control mode or ATP cut-off mode, A contact is closed; if the train integrity is lost, the on-board ATP will not lose power; at this time, the train integrity status is monitored by the on-board ATP train interface module, and the ATP system takes corresponding measures.

[0028] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Those skilled in the relevant technical field may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention and should be defined by the claims.

Claims

1. A method for continuous train tracking under ATP monitoring failure, characterized in that: Between the ATP control mode and the ATP removal mode, an ATP tracking mode is added: in the ATP tracking mode, the system does not provide train hardware monitoring for the train, but continues to provide continuous train positioning; When a train hardware monitoring fault is found in the ATP control mode, the ATP tracking mode is entered; In ATP tracking mode, the train continuously supplies power to the onboard ATP, which tolerates all input and output failures and continues to provide continuous positioning and tracking of the train; The ATP system does not provide train hardware monitoring for trains: Train control switches from signal control to on-board control; When a train hardware monitoring fault is found in the ATP control mode, the ATP tracking mode is entered, which means: When the train control interface module fails, the onboard ATP takes a fault-oriented safety response, and the driver can switch to the ATP tracking mode by using the lead seal knob, and then enter the ATP tracking mode by double confirmation of the synchronous mode status on the trackside; In ATP tracking mode, when the train integrity is lost, the onboard ATP is powered off, and the train hardware circuit implements fault-guided safety in this scenario; In ATP control mode and ATP cut-off mode, when the train integrity is lost, the on-board ATP does not lose power, and the ATP software implements fault-guided safety in this scenario.

2. The method for continuous train tracking under ATP monitoring failure according to claim 1, characterized in that: The train power supply is connected to the onboard ATP through parallel A contacts and B contacts; When entering ATP tracking mode, control contact A is disconnected; When train integrity is lost, the control B contact is opened.

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