Novel vehicle door restart control circuit and method

Abstract

The invention relates to the technical field of subway vehicle doors, and discloses a novel vehicle door restart control circuit and method. The circuit comprises a zero-speed relay, a cab activation relay, a restart relay and the like, the on-off of a restart contactor is controlled by detecting the zero speed of a train and a cab activation signal, combining a restart instruction and utilizing a power-off delay characteristic, so that a power supply loop of a door controller is temporarily disconnected and then is closed again, and the one-key synchronous restart of a door of the whole train is achieved. The design adapts to a manual driving mode and an unmanned driving mode, synchronous action of whole train doors is ensured by restarting a door controller train line, the train door fault emergency handling efficiency is effectively improved, and the intelligent requirement of subway vehicles is met.

Description

Technical Field

[0001] This invention relates to the field of subway vehicle door technology, and discloses a novel door restart control circuit and method. Background Technology

[0002] Train doors are a critical sub-component of subway vehicles, and their reliability directly impacts train operating efficiency. Current technologies primarily address door malfunctions through isolation and restart. In manned operations, the driver must manually operate the isolation device or reset the circuit breaker via the passenger compartment electrical cabinet to restart individual car doors. However, when multiple cars malfunction, this batch operation is extremely inefficient. In driverless operations, while self-resetting devices can automatically reset circuit breakers, the inability to actively disconnect and reset them results in a lack of remote restart functionality. Existing solutions suffer from low efficiency and lack of remote operation capability when dealing with large-scale door malfunctions, necessitating a universal, rapid restart solution applicable to both manned and driverless operations. Summary of the Invention

[0003] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a novel door restart control circuit and method, which solves the problems of low efficiency in handling door malfunctions and difficulty in remotely restarting unmanned vehicles in the prior art.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: In a first aspect, the present invention provides a novel door restart control circuit, comprising: Zero-speed relay, driver's cab activation relay, restart relay, restart contactor, diode, restart button, door controller and connecting wiring; The zero-speed relay is used to send a zero-speed relay signal; The driver's cab activation relay is used to send a driver's cab activation relay signal; When the train zero-speed relay signal is valid and the driver's cab activation relay signal is valid, the restart relay is activated by a restart command. The restart relay is a power-off delay relay; The restart command comes from the driver pressing the restart button or from a remote network command. After the restart relay is energized, its normally open contact closes for a preset time and then opens, so that the restart contactor coil is energized by the diode for a preset time and then de-energized. In turn, the normally closed contact of the restart contactor controls the power supply circuit of the door controller to open and then close, so as to realize the one-button restart function of the whole vehicle door.

[0005] Preferably, in one possible implementation of the first aspect, the preset time is 3 seconds.

[0006] Preferably, in one possible implementation of the first aspect, the circuit further includes a restart gate controller train line for connecting restart contactors of different carriages to ensure that all carriage gate controllers restart simultaneously.

[0007] Preferably, in one possible implementation of the first aspect, the circuit further includes a FAM mode relay for distinguishing between manual driving mode and autonomous driving mode.

[0008] Preferably, in one possible implementation of the first aspect, in manual driving mode, the FAM mode relay is de-energized and the restart relay is activated by a restart button; in autonomous driving mode, the FAM mode relay is energized and the restart relay is activated by a remote network command.

[0009] Secondly, the present invention provides a novel door restart control method, the method being implemented based on a novel door restart control circuit as described in the first aspect, comprising: The train's zero-speed relay signal and the driver's cab activation relay signal are both confirmed to be valid. Receive restart command; The power failure delay relay is activated according to the restart command, so that the normally open contact of the power failure delay relay is closed for a preset time and then opens. The normally open contact of the power failure delay relay controls the restart contactor coil to be energized for a preset time and then de-energized. By utilizing the on / off action of the normally closed contact of the restart contactor, the power supply circuit of the door controller is disconnected for a preset time and then closed again, thereby achieving synchronous power-off and restart of all doors of the vehicle.

[0010] The beneficial effects of this invention are as follows: by integrating a zero-speed relay, a driver's cab activation relay, and a power failure delay restart relay, this invention constructs a unified control circuit that can adapt to both manual and unmanned driving modes.

[0011] In manual driving mode, the driver can trigger the simultaneous restart of all vehicle doors by pressing the restart button; in driverless mode, the operation control center can remotely send commands to restart the doors.

[0012] The 3-second delay mechanism in the solution ensures that the gate controller is fully powered off and then powered on, avoiding system conflicts.

[0013] By restarting the door controller train line to connect the contactors of each carriage, the doors of the entire train can operate synchronously, greatly improving the efficiency of emergency response.

[0014] The design balances safety and flexibility, effectively reducing the impact of door malfunctions on operations, while also meeting the development needs of intelligent and unmanned subway vehicles. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This application provides a novel door restart control circuit diagram.

[0017] Figure 2 This application provides a novel door restart execution circuit diagram.

[0018] Figure 3 This application provides a flowchart of a novel door restart control method. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] To facilitate understanding of the technical solution of this application, this application will first be described. Figure 1 and Figure 2 The designations of electrical components in the document are explained as follows:

[0021] Example 1: As Figure 1 As shown, the present invention provides a novel door restart control circuit, including a zero-speed relay, a driver's cab activation relay, a restart relay, a restart contactor, a diode, a restart button, a door controller, and connecting lines, and also includes a FAM mode relay and a restart door controller train line.

[0022] The zero-speed relay is used to detect the zero-speed status of the train and output a zero-speed relay signal; the driver's cab activation relay is used to detect the occupancy status of the driver's cab and output a driver's cab activation relay signal; the restart relay is a power-off delay relay, whose normally open contact will remain closed for a preset time (set to 3 seconds) after being energized before opening; the restart contactor has normally closed contacts and is used to control the power supply circuit of the door controller; the diode is used to ensure unidirectional current flow and prevent reverse interference; the restart button is located on the driver's cab and is a self-reset button, used to issue a restart command in manual driving mode; the door controller is used to control the opening and closing of the doors; the FAM mode relay is used to distinguish between manual driving mode and unmanned driving mode, de-energized in manual driving mode and energized in unmanned driving mode; the restart door controller train line is used to connect the restart contactors of different carriages of the train to ensure that the door controllers of all carriages operate synchronously.

[0023] In manual driving mode, the FAM mode relay is de-energized. When the train meets the conditions of a valid zero-speed relay signal and a valid driver's cab activation relay signal, the driver issues a restart command by pressing the restart button. The current path is as follows: current starts from the circuit breaker, passes through the normally open contact of the driver's cab activation relay, connects to the normally open contact of the zero-speed relay, then through the normally open contact of the restart button, through the normally closed contact of the FAM mode relay, and finally reaches the restart relay coil, energizing the restart relay coil. Since the restart relay is a de-energized time-delay relay, after the restart button is released, the normally open contact of the restart relay remains closed for 3 seconds before opening. This causes the restart contactor coil to be energized by the diode for 3 seconds before being de-energized. The restart door controller train line ensures that the restart contactor coils of all carriages are energized simultaneously, thereby achieving synchronous control of the restart of all train doors.

[0024] In driverless mode, the FAM mode relay is energized. When the train meets the zero-speed requirement and the driver's cab occupancy signal is valid, the operations control center sends a remote network command via the LTE vehicle-to-ground wireless channel. The current path is as follows: current starts from the circuit breaker, passes through the normally open contact of the driver's cab activation relay, connects to the normally open contact of the zero-speed relay, then through the normally open contact of the remote network command, through the normally open contact of the FAM mode relay, and finally reaches the restart relay coil, energizing the restart relay coil. Similarly, the restart relay is a de-energized time-delay relay. After the remote network command is withdrawn, the normally open contact of the restart relay remains closed for 3 seconds before opening, energizing the restart contactor coil for 3 seconds before de-energizing it. The current path is: power supply from the circuit breaker, through the normally open contact of the restart relay, through a diode, and connected to the restart contactor coil. The restart door controller train line ensures that all car door controllers respond simultaneously.

[0025] The door restart execution circuit is as follows Figure 2As shown, when the restart contactor coil is energized, its normally closed contact in the door controller power supply circuit opens, causing the door controller power supply circuit to disconnect and the door controller to lose power. Due to the de-energization delay characteristic of the restart relay, the restart contactor coil remains energized for 3 seconds after the restart command is cancelled before de-energizing. Therefore, the door controller power supply circuit only closes again after being disconnected for 3 seconds, allowing the door controller to re-energize and complete its self-test restart. This achieves synchronized power-off and power-on for all vehicle doors. The 3-second power-off time can be adjusted according to the door supplier's hardware requirements. The entire control scheme ensures that in the event of a large-scale door failure, a quick restart can be achieved with a single button operation, improving emergency response efficiency and meeting the needs of both manned and unmanned driving projects.

[0026] Example 2: Figure 3 As shown, the present invention provides a novel door restart control method, comprising: The train's zero-speed relay signal is valid, and the driver's cab activation relay signal is valid.

[0027] Received restart command.

[0028] The power failure delay relay is activated according to the restart command, causing the normally open contact of the power failure delay relay to close for a preset time and then open.

[0029] The normally open contact of the power failure delay relay controls the restart contactor coil to be energized for a preset time and then de-energized.

[0030] By utilizing the on / off action of the normally closed contact of the restart contactor, the power supply circuit of the door controller is disconnected for a preset time and then closed again, thereby achieving synchronous power-off and restart of all doors of the vehicle.

[0031] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A novel door restart control circuit, characterized in that, include: Zero-speed relay, driver's cab activation relay, restart relay, restart contactor, diode, restart button, door controller and connecting wiring; The zero-speed relay is used to send a zero-speed relay signal; The driver's cab activation relay is used to send a driver's cab activation relay signal; When the train zero-speed relay signal is valid and the driver's cab activation relay signal is valid, the restart relay is activated by a restart command. The restart relay is a power-off delay relay; The restart command comes from the driver pressing the restart button or from a remote network command. After the restart relay is energized, its normally open contact closes for a preset time and then opens, so that the restart contactor coil is energized by the diode for a preset time and then de-energized. In turn, the normally closed contact of the restart contactor controls the power supply circuit of the door controller to open and then close, so as to realize the one-button restart function of the whole vehicle door.

2. The novel door restart control circuit according to claim 1, characterized in that, The preset time is 3 seconds.

3. The novel door restart control circuit according to claim 1, characterized in that, The circuit also includes a restart gate controller train line, which connects the restart contactors of different carriages to ensure that all carriage gate controllers restart simultaneously.

4. The novel door restart control circuit according to claim 1, characterized in that, The circuit also includes a FAM mode relay for distinguishing between manual driving mode and autonomous driving mode.

5. A novel door restart control circuit according to claim 4, characterized in that, In manual driving mode, the FAM mode relay loses power and can be activated by the restart button. In autonomous driving mode, the FAM mode relay is powered on and can be activated by a remote network command.

6. A novel door restart control method, characterized in that, The method is implemented based on a novel door restart control circuit as described in any one of claims 1 to 5, comprising: The train's zero-speed relay signal and the driver's cab activation relay signal are both confirmed to be valid. Receive restart command; The power failure delay relay is activated according to the restart command, so that the normally open contact of the power failure delay relay is closed for a preset time and then opens. The normally open contact of the power failure delay relay controls the restart contactor coil to be energized for a preset time and then de-energized. By utilizing the on / off action of the normally closed contact of the restart contactor, the power supply circuit of the door controller is disconnected for a preset time and then closed again, thereby achieving synchronous power-off and restart of all doors of the vehicle.

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