A rail milling and grinding vehicle power-off delay module

Abstract

The utility model discloses a kind of steel rail milling and grinding car power-off delay module, it is related to railway operation and maintenance equipment technical field, comprising: mains input interface, delay control module, energy holding unit, load output interface, with energy holding unit connection, for to vehicle computer system output delay power supply;Communication interface, with delay control module and vehicle computer system connection, for sending shutdown instruction to vehicle computer system after power-off signal triggers;Delay control module includes power-down detection module, timing control module and power supply path switching module, the utility model can detect in real time and trigger power supply path switching, send shutdown instruction by communication interface, actively guide computer to execute preset program, avoid file damage.

Description

Technical Field

[0001] This utility model relates to the technical field of railway operation and maintenance equipment, specifically a power-off delay module for a rail milling vehicle. Background Technology

[0002] Rail maintenance vehicles, such as rail milling and grinding vehicles, are typically equipped with key electronic devices such as industrial control computers, data acquisition devices, and communication modules. These devices are powered by the vehicle's power supply and are linked to the main control system.

[0003] Current power supply methods generally suffer from the following problems: when the vehicle's power is turned off after the operation is completed, the onboard computer is directly powered off, resulting in data not being properly saved, abnormal system shutdown, or even file system corruption, affecting the long-term stable operation of the equipment. This problem is particularly prominent in applications with high requirements for data integrity, such as track inspection, wear analysis, and image recognition.

[0004] Therefore, there is an urgent need for a technical solution that can still provide a short period of stable power output after the vehicle's main power is turned off, so as to ensure the delayed and safe shutdown of critical equipment such as onboard computers. Utility Model Content

[0005] The purpose of this invention is to provide a power-off delay module for a rail milling machine to solve the existing problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a power-off delay module for a rail milling machine, comprising: Main power input interface, used for connecting the vehicle power supply system and the onboard computer system; The delay control module is connected to the main power input interface and is used to monitor the main power status in real time and trigger a timing delay after detecting a power failure signal. An energy retention unit, connected to the delay control module, is used to provide continuous power to the load after the main power supply is disconnected; A load output interface, connected to the energy retention unit, is used to output delayed power to the on-board computer system; A communication interface is connected to the delay control module and the vehicle computer system, and is used to send a shutdown command to the vehicle computer system after the power failure signal is triggered. The delay control module includes a power failure detection module, a timing control module, and a power supply path switching module.

[0007] Furthermore, the energy retention unit is configured to support a power supply delay of 30 seconds to 5 minutes.

[0008] Furthermore, the communication interface is a serial port or a GPIO interface, used to establish a communication link with the vehicle computer system and trigger it to execute a preset shutdown procedure.

[0009] Furthermore, the timing control module of the delay control module adopts a microcontroller controller, and the power supply path switching module includes a relay or field-effect transistor switching circuit.

[0010] Furthermore, the energy retention unit is a capacitor bank or a lithium battery bank.

[0011] Furthermore, the module also includes a configuration panel or remote communication unit for setting delay time parameters and output voltage thresholds.

[0012] Furthermore, the power supply voltage of the load output interface is matched with the input power specifications of the vehicle computer, and the output current is not less than 1.2 times the rated operating current of the vehicle computer.

[0013] Furthermore, the power failure detection module includes a voltage comparator, which monitors the voltage drop status of the main power input interface in real time and triggers delayed power supply when the voltage is lower than a set threshold.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This utility model, through the delay control module and energy retention unit, can effectively detect and trigger the power supply path switching in real time after the main power is disconnected, send a shutdown command through the communication interface, actively guide the computer to execute the preset program, avoid file corruption, and, combined with the microcontroller, can adjust the delay or realize remote configuration function through the vehicle computer system, adapting to the needs of multiple scenarios. Attached Figure Description

[0015] Figure 1 This is a system block diagram of the present invention; Figure 2 This is a system block diagram of the delay control module.

[0016] In the diagram: 1. Main power input interface; 2. Delay control module; 3. Energy retention unit; 4. Load output interface; 5. Communication interface; 21. Power failure detection module; 22. Timing control module; 23. Power supply path switching module. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] To achieve the above objectives, this utility model provides the following technical solution: a power-off delay module for a rail milling vehicle, comprising a main power input interface 1, which is connected to the vehicle power supply system and is used to receive power input from the vehicle power supply system; the main power input interface 1 is connected to a delay control module 2 via a wire, the delay control module 2 including a power-off detection module 21, a timing control module 22, and a power supply path switching module 23; the output of the delay control module 2 is connected to an energy retention unit 3, the energy retention unit 3 provides delayed power to the on-board computer system via a load output interface 4; the delay control module 2 is connected to the on-board computer system via a communication interface 5 using a serial port or GPIO interface, for sending a shutdown command.

[0019] In this embodiment, the power failure detection module 21 uses a voltage comparator to monitor the voltage status of the main power input interface 1 in real time. When the detected voltage is lower than the 24V threshold, it sends a power failure signal to the timing control module 22. The timing control module 22 uses an STM32 microcontroller with a preset delay time of 3 minutes and adjustable parameters can be set through the configuration panel. The power supply path switching module 23 is composed of a relay and MOSFET composite circuit, with a switching response time of ≤0.1 seconds, ensuring seamless switching to the energy storage unit 3 after the power supply of the vehicle power supply system is disconnected.

[0020] In this embodiment, the energy storage unit 3 is a supercapacitor bank with a total energy storage capacity of 100F, supporting a 5-minute delay power supply at full load output; the voltage of the load output interface 4 matches the 24V DC input of the vehicle computer, and the output current is 15A (1.25 times the rated current of 12A of the vehicle computer), and voltage fluctuations are avoided through redundancy design; after power failure, the communication interface 5 sends a "safe shutdown" command to the vehicle computer via RS485 protocol, triggering it to execute the preset shutdown script.

[0021] In this embodiment, the outer shell of the rail milling car power-off delay module adopts an IP67 protection rating design, and the internal circuit board is fixed with potting compound. The vibration resistance level meets the EN 61373 standard. The energy retention unit 3 integrates an overvoltage protection chip to prevent reverse current surges. The configuration panel is located on the side of the module and includes an LCD display and buttons, which support on-site modification of delay parameters and voltage thresholds.

[0022] Working principle: When the main power supply of the rail milling vehicle is normal, the main power input interface 1 directly supplies power to the on-board computer through the power supply path switching module 23, and the energy storage unit 3 is in a floating charge state; when the main power supply is unexpectedly disconnected, the power failure detection module 21 identifies the voltage drop within 0.05 seconds, triggers the timing control module 22 to start the delay timer, and at the same time, the power supply path switching module 23 switches the power source to the energy storage unit 3; the communication interface 5 synchronously sends a shutdown command to the on-board computer system, triggering it to execute the data saving and system shutdown process; during the 3-minute delay period, the energy storage unit 3 continues to supply power until the on-board computer system completes a safe shutdown, after which the module automatically cuts off the output.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A power-off delay module for a rail milling machine, characterized in that, include: Main power input interface (1) is used to connect the vehicle power supply system and the on-board computer system; The delay control module (2) is connected to the main power input interface (1) and is used to monitor the main power status in real time and trigger a timing delay after detecting a power failure signal. An energy retention unit (3) is connected to the delay control module (2) and is used to provide continuous power to the load after the main power is disconnected; The load output interface (4) is connected to the energy storage unit (3) and is used to output delayed power to the vehicle computer system; The communication interface (5) is connected to the delay control module (2) and the vehicle computer system, and is used to send a shutdown command to the vehicle computer system after the power failure signal is triggered. The delay control module (2) includes a power failure detection module (21), a timing control module (22), and a power supply path switching module (23).

2. The power-off delay module for the rail milling machine according to claim 1, characterized in that: The energy retention unit (3) is configured to support a power supply delay of 30 seconds to 5 minutes.

3. The power-off delay module for the rail milling machine according to claim 1, characterized in that: The communication interface (5) is a serial port or GPIO interface, used to establish a communication link with the vehicle computer system and trigger it to execute a preset shutdown program.

4. The power-off delay module for the rail milling machine according to claim 1, characterized in that: The timing control module (22) of the delay control module (2) adopts a single-chip microcomputer controller, and the power supply path switching module (23) includes a relay or field-effect transistor switching circuit.

5. The rail milling machine power-off delay module according to claim 1, characterized in that: The energy retention unit (3) is a capacitor bank or a lithium battery bank.

6. The power-off delay module for the rail milling machine according to claim 1, characterized in that: The module also includes a configuration panel or remote communication unit for setting delay time parameters and output voltage thresholds.

7. The power-off delay module for the rail milling machine according to claim 1, characterized in that: The power supply voltage of the load output interface (4) is matched with the input power specifications of the vehicle computer, and the output current is not less than 1.2 times the rated operating current of the vehicle computer.

8. The power-off delay module for the rail milling machine according to claim 1, characterized in that: The power failure detection module (21) includes a voltage comparator, which monitors the voltage drop status of the main power input interface (1) in real time and triggers delayed power supply when the voltage is lower than a set threshold.

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