A method, device and medium for driving a vehicle-mounted braking actuator circuit

Abstract

This application provides a driving method, device, and medium for an on-board brake actuator circuit, relating to the field of braking system technology. It involves constructing an on-board brake actuator circuit; connecting the power supply of the on-board brake actuator motor to the circuit; determining whether the power supply is reverse-connected according to a reverse connection protection module; if the power supply is not reverse-connected, determining whether the on-board brake actuator motor receives a PWM waveform according to the main control unit; if so, determining whether the PWM waveform is a forward rotation signal according to the main control unit, and generating a waveform signal judgment result; based on the waveform signal judgment result, controlling the on-board brake actuator motor according to an H-bridge motor drive module, and providing status warnings for the on-board brake actuator motor according to a current and temperature sampling module. This application solves the technical problem that existing on-board brake circuits lack a reverse connection protection mechanism and an effective warning mechanism, resulting in the risk of brake system failure, and improves the stability, safety, and response speed of the braking system.

Description

Technical Field

[0001] This application relates to the field of braking system technology, specifically to a method, device, and medium for driving an on-board braking execution circuit. Background Technology

[0002] In the automotive technology field, on-board braking circuits are a critical component ensuring safe vehicle operation. Current on-board braking circuits typically use H-bridge motor drivers to control the brake actuator motor. These drivers can reverse the motor's direction to control braking force. However, existing H-bridge motor drivers can be damaged by reverse power connection, leading not only to braking system failure but also posing a serious threat to vehicle safety. Furthermore, traditional braking circuits often lack precision in current and temperature monitoring and effective overload and overheat protection mechanisms, limiting the reliability and durability of the braking system. In complex driving environments and emergency situations, these limitations can lead to delayed braking response, increasing the risk of accidents. Summary of the Invention

[0003] This application provides a driving method, device, and medium for vehicle-mounted braking execution circuits, which solves the technical problem that existing vehicle-mounted braking circuits lack power reverse connection protection mechanisms and effective early warning mechanisms, thus posing a risk of braking system failure. It achieves the technical effect of improving the stability, safety, and response speed of the braking system, thereby realizing a precise and stable braking process.

[0004] In view of the above problems, this application provides a method for driving an on-board braking actuator circuit. The method includes: constructing an on-board braking actuator circuit, wherein the on-board braking actuator circuit includes a power reverse connection protection module, an H-bridge motor drive module, a current and temperature sampling module, and a main control unit; connecting the power supply of the on-board braking actuator motor to the on-board braking actuator circuit; determining whether the power supply is reverse connected according to the power reverse connection protection module; if the power supply is not reverse connected, determining whether the on-board braking actuator motor receives a PWM waveform according to the main control unit; if the on-board braking actuator motor receives the PWM waveform, determining whether the PWM waveform is a forward rotation signal according to the main control unit, and generating a waveform signal judgment result; based on the waveform signal judgment result, controlling the on-board braking actuator motor according to the H-bridge motor drive module, and providing a status warning for the on-board braking actuator motor according to the current and temperature sampling module.

[0005] Secondly, this application also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the vehicle braking execution circuit driving method described in any of the preceding claims.

[0006] Thirdly, this application also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps in the vehicle-mounted braking execution circuit driving method described in any of the above claims.

[0007] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0008] An on-board braking execution circuit, comprising a reverse power connection protection module, an H-bridge motor drive module, a current and temperature sampling module, and a main control unit, is constructed, providing a basic framework for subsequent control and protection functions of the braking execution motor. The power supply of the on-board braking execution motor is connected to the circuit, providing power to the entire circuit. The reverse power connection protection module determines whether the power supply is reversed and feeds the result back to the main control unit, preventing damage to components due to reverse power connection and ensuring the safety and stability of the entire on-board braking execution circuit. If the power supply is not reversed, the main control unit determines whether the on-board braking execution motor receives a PWM waveform, confirming whether the motor control command was successfully sent, providing the prerequisite for motor rotation. If the on-board braking execution motor receives the PWM waveform, the main control unit further analyzes the PWM waveform to determine whether it is a forward rotation signal, generating a waveform signal judgment result. Based on the waveform signal judgment result, the motor rotation direction can be determined, and the H-bridge motor drive module controls the on-board braking execution motor, achieving precise control of the motor's rotation direction and state. The current and temperature sampling module provides status warnings for the vehicle-mounted brake actuator motor, promptly detects potential abnormalities in the motor, ensures its normal operation, and improves the reliability of the entire braking system.

[0009] In summary, this application achieves precise control of the on-board brake actuator motor through a series of steps including reverse power connection protection, motor drive control, and PWM waveform analysis. Furthermore, it utilizes a current and temperature sampling module to provide early warnings of the motor's status, thus effectively protecting the on-board brake actuator motor. Through these operations, this application improves the safety of the on-board braking circuit, preventing damage caused by reverse power connection, and enhances control precision, enabling accurate control of the motor's operation. In addition, this application significantly improves the safety and reliability of the entire on-board brake actuator circuit, thereby ensuring the stable and safe operation of the vehicle.

[0010] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0011] Figure 1 This is a flowchart illustrating a vehicle-mounted braking execution circuit driving method provided in an embodiment of this application.

[0012] Figure 2 This is a schematic diagram illustrating the process of controlling the vehicle braking actuator motor based on the waveform signal judgment result and the H-bridge motor drive module in a vehicle braking actuator circuit driving method provided in an embodiment of this application.

[0013] Figure 3 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0014] Explanation of reference numerals in the attached drawings: Bus 300, Receiver 301, Processor 302, Transmitter 303, Memory 304, Bus Interface 305. Detailed Implementation

[0015] This application provides a method, device, and medium for driving an on-board braking execution circuit. By constructing an on-board braking execution circuit, a series of operations such as power reverse connection judgment, control signal judgment, and motor rotation direction judgment are performed to achieve precise control of the on-board braking execution motor. Furthermore, a current and temperature sampling module is used to provide early warning of the motor status. This solves the technical problem that existing on-board braking circuits lack a power reverse connection protection mechanism and an effective early warning mechanism, which poses a risk of braking system failure. It achieves the technical effect of improving the stability, safety, and response speed of the braking system, thereby realizing a precise and stable braking process.

[0016] Example 1, as Figure 1 As shown in the embodiment of this application, a safety protection method for a compartmentalized intelligent grounding box is provided, the method comprising:

[0017] Step S1: Construct an on-board braking execution circuit, wherein the on-board braking execution circuit includes a power reverse connection protection module, an H-bridge motor drive module, a current and temperature sampling module, and a main control unit.

[0018] Specifically, the on-board braking execution circuit is used to control the vehicle's braking system, including starting, stopping, steering, speed, and status monitoring of the brake motor. This circuit integrates multiple functional modules, such as a reverse power connection protection module, an H-bridge motor drive module, a current and temperature sampling module, and a main control unit, providing a basic framework for subsequent control and protection functions of the brake motor. In this circuit, the reverse power connection protection module detects the power supply connection method to prevent damage to the circuit when the positive and negative terminals are reversed. The H-bridge motor drive module controls the motor's steering and speed based on signals from the main control unit. This module adjusts four switching elements (such as transistors) to change the current flow, thus achieving forward or reverse rotation of the motor. This control method makes the motor's steering more flexible and allows for precise adjustment of its operating state. The current and temperature sampling module continuously collects data on the current in the circuit and the motor's operating temperature. When the motor load or temperature is too high, this module promptly sends an alarm to the main control unit to prevent motor overload or overheating. The main control unit coordinates the work of each module, receives information, and makes decisions based on predefined logic.

[0019] Step S2: Connect the power supply of the vehicle brake actuator motor to the vehicle brake actuator circuit.

[0020] Specifically, the power source for the vehicle's brake actuator motor is typically the vehicle's battery or power system, which drives the motor to achieve vehicle braking. Connecting the power source of the vehicle's brake actuator motor to the vehicle's brake execution circuit provides power to the circuit, enabling the entire braking system to operate. Power connection is a fundamental condition for circuit operation. At this point, the power source provides the necessary energy to the entire circuit, including powering the motor drive module so that the motor can begin to operate.

[0021] Step S3: Determine whether the power supply is reversed according to the power reverse connection protection module.

[0022] Specifically, after the power supply is connected to the vehicle's braking circuit, the reverse connection protection module activates. It detects the connected voltage and compares it with a preset normal voltage range or reference voltage to determine if the power supply is reversed. If the detected voltage polarity differs from the normal range—for example, if the positive voltage is normally higher than the negative voltage, but the detected negative voltage is higher than the positive voltage—then the power supply is determined to be reversed. When the power supply is correctly connected, the vehicle's braking circuit operates normally; when the power supply is reversed, the reverse connection protection module automatically cuts off the current to prevent circuit damage and ensure the safety of the braking system.

[0023] Step S4: If the power supply is not reversed, determine whether the vehicle-mounted brake actuator motor receives a PWM waveform according to the main control unit.

[0024] Specifically, PWM (Pulse Width Modulation) waveforms are a method of digitally encoding analog signal levels. By adjusting the duty cycle (i.e., the ratio of the high-level time to the period time), the speed and direction of the motor can be controlled. When the power supply is correctly connected, the main control unit starts working. By detecting specific input pins or communication interfaces, it determines whether the PWM signal has been successfully transmitted to the vehicle's brake actuator motor, thereby ensuring that the motor receives the correct control signal.

[0025] Step S5: If the vehicle-mounted brake actuator receives the PWM waveform, the main control unit determines whether the PWM waveform is a forward rotation signal and generates a waveform signal determination result.

[0026] Specifically, when the on-board brake actuator receives a PWM waveform, the main control unit analyzes it to determine whether it is a forward rotation signal. For example, the main control unit can determine this based on the PWM waveform's duty cycle range, pulse frequency, or a specific pulse sequence. If the received PWM waveform's duty cycle falls within a specific range (a predefined duty cycle range corresponding to forward rotation signals), the main control unit determines it as a forward rotation signal; conversely, if the received PWM waveform's duty cycle is outside this range, the main control unit determines it as a reverse rotation signal. After the determination, the main control unit generates a corresponding waveform signal result. This result may be a digital signal (e.g., 1 indicates a forward rotation signal, 0 indicates no) or a specific code, used for further control of the motor's actual movement.

[0027] Step S6: Based on the waveform signal judgment result, control the vehicle-mounted brake actuator motor according to the H-bridge motor drive module, and provide a status warning for the vehicle-mounted brake actuator motor according to the current and temperature sampling module.

[0028] Specifically, the H-bridge motor drive module receives the waveform signal judgment result generated in step S5 and controls the motor to operate according to the predetermined target based on this judgment result. Simultaneously, the current and temperature sampling module monitors the current and temperature of the on-board brake actuator motor in real time and analyzes them to detect any abnormalities such as overload or overheating. If the current or temperature exceeds a safety threshold, the current and temperature sampling module generates a status warning signal to alert the main control unit that there is a potential fault or overload risk in the motor. The main control unit can then take necessary protective measures based on this warning signal, such as reducing the motor load, decreasing the motor speed, or shutting down the motor to prevent further damage to the motor or circuitry.

[0029] Furthermore, step S3 in this embodiment of the application also includes:

[0030] If the power supply is reversed, a PMOS shutdown command is triggered; based on the PMOS shutdown command, the power supply is cut off according to the power reverse connection protection module.

[0031] Specifically, a PMOS turn-off command is a control instruction used to instruct a PMOS device to stop operating, that is, to change from the on state to the off state. In a circuit, the PMOS device plays a crucial role in controlling the flow of current, and the turn-off command can prevent current from flowing through the relevant circuit path.

[0032] When the reverse power connection protection module detects a reverse power connection, it triggers a PMOS shutdown command. At this time, the PMOS device in the module switches from the on state to the off state according to this command. In the circuit design, the PMOS device is located on the critical path of the power input. When it is on, it allows current to flow; when it is off, it effectively cuts off the connection between the power supply and subsequent circuits, thus preventing reverse current from flowing into the circuit and protecting other electronic components and motors in the vehicle braking actuator circuit. Through this automatic protection mechanism, the reverse power connection protection module can quickly cut off the power supply in the event of a reverse power connection, ensuring the safety and reliability of the entire vehicle braking actuator circuit.

[0033] Furthermore, if the on-board braking actuator does not receive the PWM waveform, a motor mute command is generated.

[0034] Specifically, the motor silence command is a command specifically issued to the vehicle's braking actuator motor. Its purpose is to put the motor into a silence state, that is, to stop any active operation of the motor, keep the motor stationary, and no longer perform any actions related to rotation or braking.

[0035] If the main control unit determines that the motor is not receiving a PWM waveform, it could be due to a loss of control signal, a braking system malfunction, or other reasons. In this case, the main control unit generates a motor mute command, instructing the H-bridge motor drive module to stop driving the motor, ensuring that the motor will not continue to run and preventing accidental starting or continued operation due to a lack of control signal. This mechanism ensures that the motor will not malfunction when it cannot obtain a valid control signal, further improving the safety and reliability of the entire braking system.

[0036] Furthermore, such as Figure 2 As shown, in step S6 of this embodiment, based on the waveform signal determination result, the vehicle-mounted brake actuator motor is controlled by the H-bridge motor drive module, and the following further steps are included:

[0037] Step S6-11: If the waveform signal determination result indicates that the PWM waveform is not a forward rotation signal, generate a motor reverse command.

[0038] Step S6-12: If the waveform signal determination result indicates that the PWM waveform is a forward rotation signal, generate a motor forward rotation command.

[0039] Step S6-13: Transmit the motor reverse command or the motor forward command to the H-bridge motor drive module.

[0040] Step S6-14: The H-bridge motor drive module controls the vehicle-mounted brake actuator motor according to the motor reverse command or the motor forward command.

[0041] Specifically, when the waveform signal determination result indicates that the PWM waveform is not a forward rotation signal, the program logic inside the main control unit will generate a motor reversal command according to pre-set rules. This reversal command is used to instruct the on-board brake actuator motor to rotate in the opposite direction, that is, to change the direction of rotation of the motor. At this time, the vehicle may need to reverse or perform reverse braking.

[0042] Conversely, if the waveform signal analysis indicates that the received PWM waveform is a forward rotation signal, the main control unit will generate a forward rotation command for the motor. This forward rotation command instructs the on-board brake actuator motor to rotate in the predetermined direction to achieve vehicle forward movement or normal braking.

[0043] After generating a motor reverse or forward rotation command, the main control unit transmits the command to the H-bridge motor drive module via a communication line. This communication line may be a digital signal line, such as a serial communication protocol (e.g., SPI, I2C) or a parallel communication method.

[0044] Upon receiving a motor reverse or forward rotation command, the H-bridge motor drive module adjusts the state of switching elements (such as MOSFETs or transistors) to change the current flow direction of the on-board brake actuator, thereby controlling the direction of rotation of the on-board brake actuator. If a forward rotation command is received, the H-bridge motor drive module turns the corresponding transistors on and off in a specific sequence, providing a forward current path for the on-board brake actuator, causing the motor to rotate forward. If a reverse rotation command is received, the H-bridge motor drive module adjusts the transistor on and off sequence to provide a reverse current path for the on-board brake actuator, achieving motor reversal.

[0045] Furthermore, in step S6 of this embodiment, the status warning for the vehicle-mounted brake actuator motor based on the current-temperature sampling module includes providing over-temperature warning and over-current warning for the vehicle-mounted brake actuator motor. The over-temperature warning for the vehicle-mounted brake actuator motor includes:

[0046] Step S6-21: Obtain the real-time motor temperature parameters of the vehicle-mounted brake actuator motor according to the current and temperature sampling module.

[0047] Step S6-22: Transmit the real-time motor temperature parameter to the main control unit and determine whether the real-time motor temperature parameter is greater than or equal to the motor temperature threshold.

[0048] Step S6-23: If the real-time motor temperature parameter is greater than or equal to the motor temperature threshold, generate a motor over-temperature warning signal.

[0049] Specifically, the current-temperature sampling module continuously monitors the operating status of the vehicle's brake actuator motor, measuring its operating temperature through sensors to obtain real-time motor temperature parameters. This temperature data is dynamically changing, reflecting the motor's real-time temperature during operation. These collected real-time motor temperature parameters are transmitted to the main control unit. Upon receiving this data, the main control unit compares it with a preset motor temperature threshold to determine if the motor is overheating. This threshold is a safety value, typically set by the manufacturer during the design phase. If the motor's actual operating temperature exceeds or equals this threshold, it indicates a risk of overheating, potentially leading to motor damage or other malfunctions. In this case, the main control unit generates a motor overheat warning signal. This warning signal can be a specific digital code or a voltage level signal. For example, if the main control unit uses digital logic, it might use a specific bit in a register to indicate an overheat warning signal; if the main control unit outputs a voltage level signal, it might pull a specific output pin high or low to indicate this warning signal, alerting the operator or braking system to take action, such as reducing the motor load, stopping the motor, or activating other cooling mechanisms to prevent motor damage due to overheating.

[0050] Furthermore, an overcurrent warning is provided for the on-board brake actuator motor, including:

[0051] Step S6-24: Obtain the real-time motor current parameters of the vehicle-mounted brake actuator motor according to the current and temperature sampling module.

[0052] Step S6-25: Transmit the real-time motor current parameters to the main control unit and determine whether the real-time motor current parameters are greater than or equal to the motor current threshold.

[0053] Step S6-26: If the real-time motor current parameter is greater than or equal to the motor current threshold, generate a motor overcurrent warning signal.

[0054] Specifically, the current-temperature sampling module monitors the motor's operating current in real time using a current sensor, acquiring real-time motor current parameters (i.e., the motor's real-time current value) and transmitting this data to the main control unit. Upon receiving the real-time motor current parameters, the main control unit compares this data with a preset motor current threshold. This motor current threshold is a safety value set based on the motor's rated current; typically, the motor's operating current should remain below this threshold. If the current exceeds this threshold, it may indicate that the motor is under overload. In this case, the main control unit generates a motor overcurrent warning signal. This signal alerts the operator or braking system that the motor may be overloaded or malfunctioning, requiring immediate action such as reducing the load, stopping the motor, or activating other protection mechanisms.

[0055] Furthermore, the reverse power connection protection module described in this application embodiment includes a voltage detection circuit, a PMOS device, a comparator, and a control logic circuit.

[0056] Specifically, the voltage detection circuit detects the polarity of the input voltage and whether it meets expectations. This circuit identifies whether the power supply is reversed by comparing the input voltage with a set value. If the voltage is abnormal or reversed, the voltage detection circuit will issue an alarm or directly control subsequent circuits for protection. A PMOS (Power MOSFET) is a metal-oxide-semiconductor field-effect transistor used to control the switching state of current in a circuit. In the reverse power connection protection module, PMOS devices are typically used to control the current flow, effectively cutting off the current when the power supply is reversed, preventing circuit damage. A comparator is an electronic device that compares two input voltages and outputs a high or low level signal. In the reverse power connection protection module, the comparator compares the voltage with a reference voltage to determine if the power supply is correctly connected. The control logic circuit is responsible for controlling the switching state of the PMOS device based on the comparator's output, ensuring that the circuit only starts when the power supply is correctly connected; otherwise, it will disconnect the power supply.

[0057] When the reverse power connection protection module is operating, the voltage detection circuit continuously monitors the input power supply voltage. The PMOS device works in conjunction with the comparator and control logic circuit. The comparator compares the voltage detected by the voltage detection circuit with a preset reference voltage. If the detected voltage polarity is inconsistent with the normal condition (i.e., reverse power connection), the comparator outputs a signal to the control logic circuit. The control logic circuit controls the on or off state of the PMOS device based on the comparator signal, thereby preventing reverse current from flowing through the circuit and protecting other circuit components from damage.

[0058] Furthermore, the H-bridge motor drive module described in this application embodiment includes an H-bridge motor driver and a filter circuit.

[0059] Specifically, an H-bridge motor driver is used to control the forward and reverse rotation of a DC motor. It controls the direction of current by controlling four switching elements (such as transistors or MOSFETs), thereby controlling the motor's rotation direction. A filter circuit is used to smooth current or voltage fluctuations and reduce high-frequency noise interference to the system. The filter circuit typically consists of components such as capacitors and inductors to ensure a stable current received by the motor driver, thus improving the smoothness and efficiency of motor operation.

[0060] When the H-bridge motor drive module is working, it receives motor control commands (such as forward, reverse, or speed adjustment commands) from the main control unit. The H-bridge motor driver adjusts the direction and magnitude of the current output to the motor according to these commands. A filtering circuit connected to the H-bridge motor driver filters the current or voltage signal output by the driver, making signal transmission more stable, reducing noise and signal interference, and thus ensuring signal integrity. For example, when the motor is running at high speed, the interaction of inductors, capacitors, and other components in the circuit may generate some noise signals. The filtering circuit removes this noise, allowing the motor to receive a more stable drive signal, thereby ensuring stable motor operation.

[0061] In summary, the vehicle-mounted braking execution circuit driving method provided in this application has the following technical effects:

[0062] An on-board braking execution circuit, comprising a reverse power connection protection module, an H-bridge motor drive module, a current and temperature sampling module, and a main control unit, is constructed, providing a basic framework for subsequent control and protection functions of the braking execution motor. The power supply of the on-board braking execution motor is connected to the circuit, providing power to the entire circuit. The reverse power connection protection module determines whether the power supply is reversed and feeds the result back to the main control unit, preventing damage to components due to reverse power connection and ensuring the safety and stability of the entire on-board braking execution circuit. If the power supply is not reversed, the main control unit determines whether the on-board braking execution motor receives a PWM waveform, confirming whether the motor control command was successfully sent, providing the prerequisite for motor rotation. If the on-board braking execution motor receives the PWM waveform, the main control unit further analyzes the PWM waveform to determine whether it is a forward rotation signal, generating a waveform signal judgment result. Based on the waveform signal judgment result, the motor rotation direction can be determined, and the H-bridge motor drive module controls the on-board braking execution motor, achieving precise control of the motor's rotation direction and state. The current and temperature sampling module provides status warnings for the vehicle-mounted brake actuator motor, promptly detects potential abnormalities in the motor, ensures its normal operation, and improves the reliability of the entire braking system.

[0063] Overall, this application embodiment achieves precise control of the vehicle-mounted brake actuator motor through a series of steps including reverse power connection protection, motor drive control, and PWM waveform analysis. It also utilizes a current and temperature sampling module to provide early warnings of the motor's status, thus effectively protecting the vehicle-mounted brake actuator motor. Through these operations, this application improves the safety of the vehicle-mounted braking circuit, avoids damage caused by reverse power connection, and enhances control precision, enabling accurate control of the motor's operation. Furthermore, this application embodiment significantly improves the safety and reliability of the entire vehicle-mounted brake actuator circuit, thereby ensuring the stable and safe operation of the vehicle.

[0064] Example 2: Based on the same inventive concept as the vehicle braking execution circuit driving method in Example 1, this application also provides an electronic device, including: at least one processor, and a memory communicatively connected to the at least one processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the steps of any of the methods described in Example 1.

[0065] like Figure 3 As shown, the bus architecture is represented by bus 300. Bus 300 may include any number of interconnected buses and bridges, connecting various circuits including one or more processors represented by processor 302 and memory represented by memory 304. Bus 300 may also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 305 provides an interface between bus 300 and receiver 301 and transmitter 303. Receiver 301 and transmitter 303 may be the same element, i.e., a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 302 is responsible for managing bus 300 and general processing, while memory 304 can be used to store data used by processor 302 during operation.

[0066] In embodiment three, based on the same inventive concept as the vehicle-mounted brake execution circuit driving method in embodiment one, this application also provides a computer-readable storage medium storing a computer program thereon. When the computer program is executed by a processor, it implements the various processes of the above-mentioned vehicle-mounted brake execution circuit driving method embodiment and achieves the same technical effect. To avoid repetition, it will not be described again here.

[0067] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for driving an on-board braking actuator circuit, characterized in that, The method includes: An on-board braking execution circuit is constructed, wherein the on-board braking execution circuit includes a power reverse connection protection module, an H-bridge motor drive module, a current and temperature sampling module, and a main control unit; Connect the power supply of the vehicle-mounted brake actuator motor to the vehicle-mounted brake actuator circuit; The reverse connection protection module determines whether the power supply is reversed. If the power supply is not reversed, the main control unit determines whether the vehicle brake actuator motor receives a PWM waveform. If the vehicle-mounted brake actuator receives the PWM waveform, the main control unit determines whether the PWM waveform is a forward rotation signal and generates a waveform signal determination result. Based on the waveform signal judgment result, the vehicle-mounted brake actuator is controlled by the H-bridge motor drive module, and the vehicle-mounted brake actuator is given a status warning by the current and temperature sampling module. The determination of whether the power supply is reverse-connected, based on the power reverse connection protection module, includes: If the power supply is reversed, a PMOS shutdown command is triggered. Based on the PMOS shutdown command, the power supply is cut off according to the power reverse connection protection module; Specifically, based on the waveform signal judgment result, the vehicle-mounted braking actuator is controlled by the H-bridge motor drive module, including: If the waveform signal determination result indicates that the PWM waveform is not a forward rotation signal, a motor reverse command is generated. If the waveform signal determination result indicates that the PWM waveform is a forward rotation signal, a forward rotation command for the motor is generated. The motor reverse rotation command or the motor forward rotation command is transmitted to the H-bridge motor drive module; The H-bridge motor drive module controls the vehicle-mounted braking actuator motor according to the motor reverse command or the motor forward command.

2. The method as described in claim 1, characterized in that, If the on-board braking actuator does not receive the PWM waveform, a motor mute command is generated.

3. The method as described in claim 1, characterized in that, The on-board brake actuator motor is given a status warning based on the current and temperature sampling module, including: The real-time motor temperature parameters of the on-board brake actuator motor are obtained based on the current-temperature sampling module. The real-time motor temperature parameter is transmitted to the main control unit, and it is determined whether the real-time motor temperature parameter is greater than or equal to the motor temperature threshold. If the real-time motor temperature parameter is greater than or equal to the motor temperature threshold, an over-temperature warning signal for the motor is generated.

4. The method as described in claim 1, characterized in that, The on-board brake actuator motor is given a status warning based on the current and temperature sampling module, including: The real-time motor current parameters of the on-board braking actuator motor are obtained based on the current and temperature sampling module. The real-time motor current parameter is transmitted to the main control unit to determine whether the real-time motor current parameter is greater than or equal to the motor current threshold. If the real-time motor current parameter is greater than or equal to the motor current threshold, a motor overcurrent warning signal is generated.

5. The method as described in claim 1, characterized in that, The reverse power connection protection module includes a voltage detection circuit, a PMOS device, a comparator, and a control logic circuit.

6. The method as described in claim 1, characterized in that, The H-bridge motor drive module includes an H-bridge motor driver and a filter circuit.

7. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the vehicle braking execution circuit driving method according to any one of claims 1-6.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of a vehicle-mounted braking execution circuit driving method as described in any one of claims 1-6.

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