A control system based on a power car and a power car

Abstract

The utility model provides a control system based on power supply car, its main controller and spare controller parallel and communication connection, voltage regulation control port and rotating speed regulation control port of main controller and spare controller are connected in parallel through the normally closed contact and the normally open contact of first relay, and the spare controller still includes the switching control port of enabling signal output when providing between main controller and spare controller communication exception or communication fault code, switching control port is connected with the coil of first relay, the utility model provides a control system based on power supply car can when main controller fault switches to spare controller, and the spare controller can through first relay and voltage regulation control port and rotating speed regulation control port are switched from main controller to spare controller, disconnect the physical connection of main controller and voltage regulator and rotating speed regulator, can effectively avoid the interference of error instruction that the main controller of failure possibly sent to the generator control, improve power supply car generation reliability.

Description

Technical Field

[0001] This utility model relates to the field of power supply vehicle technology, and in particular to a control system and a power supply vehicle based on a power supply vehicle. Background Technology

[0002] Power supply vehicles are generally used for emergency power supply, such as when extreme weather disasters like earthquakes, typhoons, heavy rain, and snowstorms cause power grid failures, in which case power supply vehicles can quickly provide power. They are also frequently used in outdoor venues, such as concerts, sporting events, and exhibitions, or in field mining and exploration, where power supply vehicles can provide mobile power support.

[0003] Currently, power supply vehicles often use diesel generator sets for power generation. The diesel generator set is installed on the power supply vehicle, and the generator set's control system is installed on the side of the power supply vehicle box. When the power supply vehicle is parked at a location that requires power, the generator is turned on next to the control panel to ensure power supply.

[0004] To avoid the impact of control system failures on the reliability of power supply to the power vehicle, the control system generally needs to be designed with redundancy. In the existing technology, the switching control of redundant controllers is often controlled by software. After the main controller fails and switches to the backup controller, the failed main controller and the actuator remain connected. At this time, the failed main controller may issue incorrect instructions, interfering with the backup controller's control of the actuator, resulting in insufficient reliability. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a control system and a power supply vehicle based on a power supply vehicle, so as to solve the problem that in the prior art, the main and backup controllers of the power supply vehicle are simply connected in parallel. During the redundancy switch, the faulty main controller may issue incorrect instructions, which will interfere with the backup controller's control of the actuators and result in insufficient reliability.

[0006] This utility model provides a control system based on a power supply vehicle for power generation control of the vehicle. The control system includes a main controller and a backup controller.

[0007] The corresponding ports of the main controller and the backup controller are connected in parallel and connected to the generator control of the power supply vehicle.

[0008] The voltage regulation control port and speed regulation control port of the main controller are connected to the normally closed contact of the first relay, the voltage regulation control port and speed regulation control port of the backup controller are connected to the normally open contact of the first relay, and the common contact of the first relay is connected to the control terminal of the voltage regulator and the speed regulator.

[0009] The main controller and the backup controller are communicatively connected. The backup controller further includes a switching control port that can provide an enable signal output when there is a communication anomaly or a communication fault code between the main controller and the backup controller. The switching control port is connected to the coil of the first relay.

[0010] Optionally, the voltage regulator includes a boost control circuit and a buck control circuit, the speed regulator includes a speed increase control circuit and a speed decrease control circuit, and a third relay is connected in series in each of the boost control circuit, the buck control circuit, the speed increase control circuit and the speed decrease control circuit;

[0011] The voltage regulation control port includes a boost control port and a buck control port, and the speed regulation control port includes a speed increase control port and a speed decrease control port;

[0012] The first relay is provided in four groups, and the common contacts of the four first relays are connected one-to-one with the coils of the four third relays.

[0013] Optionally, the main controller further includes a grounding disable control port, the switching control port being connected to the coil of a second relay, and the switching circuit of the second relay being connected in series in the grounding circuit of the grounding disable control port.

[0014] Optionally, the main controller and the backup controller further include parallel remote start / stop control ports, which are grounded via a remote control switch after being connected in parallel.

[0015] Optionally, the main controller and the backup controller further include an emergency stop control port connected in parallel, with an off-site emergency stop button switch and a cab emergency stop button switch connected in series on the emergency stop control port.

[0016] This utility model also provides a power supply vehicle, including the above-mentioned control system based on the power supply vehicle.

[0017] This utility model provides a power supply vehicle-based control system for power generation control. It includes a main controller and a backup controller connected in parallel and communicating with each other, and connected to the generator control of the power supply vehicle to control the generator's voltage and speed. The voltage regulation control port and speed regulation control port of the main controller are connected to the normally closed contact of a first relay, and the voltage regulation control port and speed regulation control port of the backup controller are connected to the normally open contact of the first relay. The common contact of the first relay is connected to the control terminals of the voltage regulator and speed regulator. The backup controller also includes a switching control port that can provide an enable signal output when communication between the main controller and the backup controller is abnormal or has a communication fault code. The switching control port is connected to the coil of the first relay. This power supply vehicle-based control system can, when the main controller fails and switches to the backup controller, control the first relay through the switching control port of the backup controller to switch the voltage regulation control port and speed regulation control port from the main controller to the backup controller, disconnecting the main controller from the voltage regulator and speed regulator. This effectively avoids interference from erroneous commands issued by the faulty main controller on the generator control, improving the reliability of generator control. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main controller part of the control system based on the power supply vehicle in an embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the backup controller part of the control system based on the power supply vehicle in an embodiment of this utility model.

[0020] Figure 3 This is a schematic diagram of the regulator part of the control system based on the power supply vehicle in an embodiment of this utility model.

[0021] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this utility model. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] To address the problem of insufficient reliability in existing power supply vehicles where the main and backup controllers are simply connected in parallel, a faulty main controller may issue incorrect commands during redundancy switching, interfering with the backup controller's control of the actuators.

[0026] This invention provides a control system based on a power supply vehicle, in which a main controller and a backup controller are connected in parallel and communicatively. The voltage regulation control ports and speed regulation control ports of the main controller and the backup controller are connected in parallel through the normally closed and normally open contacts of a first relay. The backup controller also includes a switching control port that can provide an enable signal output when there is a communication abnormality or a communication fault code between the main controller and the backup controller. The switching control port is connected to the coil of the first relay. When the main controller fails and switches to the backup controller, the backup controller can switch the voltage regulation control port and speed regulation control port from the main controller to the backup controller through the first relay, disconnecting the physical connection between the main controller and the voltage regulator and speed regulator. This effectively avoids interference from erroneous commands that the faulty main controller may issue to the generator control, improving the power generation reliability of the power supply vehicle.

[0027] Specifically, please refer to Figure 1 , Figure 2 and Figure 3 The power supply vehicle-based control system in this embodiment is used for the power generation control of the power supply vehicle. The main controller 21 and the backup controller 22 obtain the generator's output current, output voltage, and load terminal voltage through the generator current sampling port A01, the generator voltage sampling port V01, and the load voltage sampling port V02. Based on the load terminal voltage, the voltage regulator 31 and the speed regulator 32 are adjusted. The output voltage and speed of the generator 10 are adjusted through the voltage regulator 31 and the speed regulator 32 to perform voltage stabilization control of the load terminal voltage and ensure the stability of power supply to the load.

[0028] The main controller 21 and the backup controller 22 are connected for software redundancy switching control. The communication signals include fault codes, data frames, etc. When the fault code of the main controller 21 indicates a fault or the data frame is lost, the backup controller 22 recognizes the fault of the main controller 21 and automatically takes over the main controller 21.

[0029] To avoid interference from erroneous commands that may be issued in the event of a malfunction of the main controller 21, in this embodiment, the voltage regulation control port and speed regulation control port of the main controller 21 are connected to the normally closed contact of the first relay KM1, the voltage regulation control port and speed regulation control port of the backup controller 22 are connected to the normally open contact of the first relay KM1, the common contact of the first relay KM1 is connected to the control terminals of the voltage regulator 31 and the speed regulator 32, and the switching control port RYB of the backup controller 22 is connected to the coil of the first relay KM1.

[0030] When a data frame is lost or communication is abnormal between the main controller 21 and the backup controller 22, or when a fault code provided by the main controller 21 indicates a fault in the main controller 21, the switch to the backup controller 22 is effective. After the backup controller 22 is activated, its switching control port RYB provides an enable signal output, the coil of the first relay KM1 is energized, and the switch changes from a normally closed contact to a normally open contact. The voltage regulation control port and speed regulation control port connected to the voltage regulator 31 and speed regulator 32 are switched from the main controller 21 side to the backup controller 22 side, disconnecting the voltage regulation control port and speed regulation control port on the main controller 21 side. This can effectively avoid interference from erroneous commands that the faulty main controller 21 may issue to the voltage regulator 31 and speed regulator 32, and improve the control reliability after switching to the backup controller 22.

[0031] To facilitate voltage and speed regulation of the generator and avoid control signal crosstalk, in this embodiment, the voltage regulator 31 includes a boost control circuit and a buck control circuit, and the speed regulator 32 includes a speed increase control circuit and a speed decrease control circuit. A third relay KM3 is connected in series in each of the boost, buck, speed increase, and speed decrease control circuits. The voltage regulation control ports include a boost control port Y1 and a buck control port Y2, and the speed regulation control ports include a speed increase control port Y3 and a speed decrease control port Y4. Four sets of first relays KM1 are provided, and the common contact of each of the four first relays KM1 is connected one-to-one with the coil of each of the four third relays KM3. The boost control port Y1, buck control port Y2, speed increase control port Y3, and speed decrease control port Y4 are arranged separately and enabled individually, effectively avoiding crosstalk between the controls.

[0032] The control system is also used to control the output cabinet 11 of the generator 10. Correspondingly, the main controller 21 and the backup controller 22 also include the output cabinet control terminal B01 connected in parallel. The output cabinet control terminal B01 is connected to the coil of the fourth relay KM4, and the fourth relay KM4 controls the closing and closing of the output cabinet 11.

[0033] When output cabinet 11 is not closed, there is no voltage output at the load end. At this time, the control system adjusts the generator's operating state according to the generator's operating conditions. Once the generator's operating state meets the requirements, the output is resumed. Correspondingly, when output cabinet 11 is not closed, the control of the generator only requires the sampling signals from the generator current sampling port A01 and the generator voltage sampling port V01. To facilitate the controller's identification of the output cabinet 11's state, the main controller 21 and the backup controller 22 also include an output cabinet closing feedback port VFB. A feedback switch K11 is connected to the output cabinet 11, and the feedback switch K11 is control-connected to the output cabinet 11, responding to the closing state of the output cabinet 11. The feedback switch K11 may include, for example, a relay, whose coil is connected in series in the power supply output path of the output cabinet 11.

[0034] To further mitigate interference from the faulty main controller 21, in this embodiment, the main controller 21 also includes a grounding disable control port RY. The switching control port RYB of the backup controller 22 is connected to the coil of the second relay KM2. The switching circuit of the second relay KM2 is connected in series in the grounding circuit of the grounding disable control port RY. When the backup controller 22 takes over the main controller 21, it also synchronously drives the second relay KM2 to operate, grounding the grounding disable control port RY of the main controller 21 (or connecting it to the negative terminal of the DC power supply), disabling the main controller 21, and avoiding interference from other control ports of the main controller 21.

[0035] To facilitate the start-stop control of the main controller 21 and the backup controller 22, in this embodiment, the main controller 21 and the backup controller 22 also include a remote start-stop control port RS connected in parallel. The remote start-stop control port RS is grounded to K10 through a remote control switch after being connected in parallel.

[0036] To provide emergency response capabilities, in this embodiment, the main controller 21 and the backup controller 22 also include a parallel emergency stop control port EM+. An off-site emergency stop button switch SB1 and a cab emergency stop button switch SB2 are connected in series on the emergency stop control port EM+, providing two emergency stop buttons for convenient emergency stop control. For example, in the event of a fire or other malfunction in the power supply vehicle, the control system can be shut down using the two emergency stop buttons to ensure safety. The off-site emergency stop button switch SB1 can be located next to the generator, allowing ground personnel to control the power supply vehicle while it is generating electricity, eliminating the need to enter the cab for emergency stop control and improving emergency stop control efficiency.

[0037] This utility model also provides a power supply vehicle, including the above-mentioned power supply vehicle-based control system, which can disconnect the physical connection between the main controller and the voltage regulator and speed regulator when the main controller fails and switches to the backup controller. This can effectively avoid interference from erroneous commands that the faulty main controller may issue to the generator control and improve the power generation reliability of the power supply vehicle.

[0038] The main controller and the backup controller can be selected from programmable logic controllers. The functions of each port of the programmable logic controller can be designed to meet the functional requirements of each port of the main controller and the backup controller.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The embodiments described above are merely illustrative of several specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of protection of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the scope of protection of this utility model. Therefore, the scope of protection of this utility model patent should be determined by the appended claims.

Claims

1. A control system based on a power supply vehicle, used for power generation control of the power supply vehicle, characterized in that, The control system includes a main controller and a backup controller, wherein... The corresponding ports of the main controller and the backup controller are connected in parallel and connected to the generator control of the power supply vehicle. The voltage regulation control port and speed regulation control port of the main controller are connected to the normally closed contact of the first relay, the voltage regulation control port and speed regulation control port of the backup controller are connected to the normally open contact of the first relay, and the common contact of the first relay is connected to the control terminal of the voltage regulator and the speed regulator. The main controller and the backup controller are communicatively connected. The backup controller further includes a switching control port that can provide an enable signal output when there is a communication anomaly or a communication fault code between the main controller and the backup controller. The switching control port is connected to the coil of the first relay.

2. The control system based on the power supply vehicle according to claim 1, characterized in that, The voltage regulator includes a boost control circuit and a buck control circuit, and the speed regulator includes a speed increase control circuit and a speed decrease control circuit. A third relay is connected in series with each of the boost control circuit, the buck control circuit, the speed increase control circuit, and the speed decrease control circuit. The voltage regulation control port includes a boost control port and a buck control port, and the speed regulation control port includes a speed increase control port and a speed decrease control port; The first relay is provided in four groups, and the common contacts of the four first relays are connected one-to-one with the coils of the four third relays.

3. The control system based on the power supply vehicle according to claim 1, characterized in that, The main controller also includes a grounding disable control port, which is connected to the coil of a second relay, and the switching circuit of the second relay is connected in series with the grounding circuit of the grounding disable control port.

4. The control system based on the power supply vehicle according to claim 1, characterized in that, The main controller and the backup controller also include parallel remote start / stop control ports, which are grounded via a remote control switch after being connected in parallel.

5. The control system based on the power supply vehicle according to claim 1, characterized in that, The main controller and the backup controller also include an emergency stop control port connected in parallel, with an off-site emergency stop button switch and a cab emergency stop button switch connected in series on the emergency stop control port.

6. A power supply vehicle, characterized in that, Includes the power supply vehicle-based control system as described in any one of claims 1 to 5.

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