Vehicle-mounted brake execution circuit driving method and device and medium

Abstract

The invention provides a vehicle-mounted braking execution circuit driving method and device and a medium, and relates to the technical field of braking systems. Connecting a power supply of a vehicle-mounted brake execution motor to a vehicle-mounted brake execution circuit; judging whether the power supply is reversely connected according to the power supply reverse connection protection module; if the power supply is not reversely connected, according to the main control unit, whether the vehicle-mounted brake execution motor receives the PWM waveform is judged; if yes, judging whether the PWM waveform is a forward rotation signal or not according to the main control unit, and generating a waveform signal judgment result; and on the basis of the waveform signal judgment result, a vehicle-mounted brake execution motor is controlled according to an H-bridge motor driving module, and state early warning is conducted on the vehicle-mounted brake execution motor according to a current temperature sampling module. The vehicle-mounted brake circuit solves the technical problem that an existing vehicle-mounted brake circuit lacks a power supply reverse connection protection mechanism and an effective early warning mechanism, and the failure risk of a brake system exists, and the stability, safety and response speed of the brake system are improved.

Description

Technical Field

[0001] The present application relates to the technical field of brake systems, and in particular to a method, device and medium for driving a vehicle-mounted brake execution circuit. Background Art

[0002] In the field of automotive technology, on-board braking circuits are a key component to ensure safe driving of vehicles. Current on-board braking circuits usually use H-bridge motor drivers to control the brake actuator motor, which can realize the forward and reverse rotation of the motor, thereby controlling the braking force. However, existing H-bridge motor drivers may be damaged in the case of reverse power supply, which not only causes the braking system to fail, but also poses a serious threat to vehicle safety. In addition, traditional braking circuits are often not precise enough in current and temperature monitoring, and lack effective overload and overheating protection mechanisms, which limits the reliability and durability of the braking system. In complex driving environments and emergency situations, these limitations may lead to untimely braking response and increase the risk of accidents. Summary of the invention

[0003] The present application provides a method, device and medium for driving a vehicle-mounted brake execution circuit, which solves the technical problems that the existing vehicle-mounted brake circuit lacks a power reverse connection protection mechanism and an effective early warning mechanism, and there is a risk of brake system failure, thereby achieving the technical effect of improving the stability, safety and response speed of the brake system, thereby realizing a precise and smooth formulation process.

[0004] In view of the above problems, on the one hand, the present application provides a method for driving a vehicle-mounted brake execution circuit, the method comprising: constructing a vehicle-mounted brake execution circuit, wherein the vehicle-mounted brake execution circuit comprises a power reverse connection protection module, an H-bridge motor drive module, a current temperature sampling module and a main control unit; connecting the power supply of the vehicle-mounted brake execution motor to the vehicle-mounted brake execution circuit; judging whether the power supply is reversely connected according to the power reverse connection protection module; if the power supply is not reversely connected, judging whether the vehicle-mounted brake execution motor receives a PWM waveform according to the main control unit; if the vehicle-mounted brake execution motor receives the PWM waveform, judging 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 vehicle-mounted brake execution motor according to the H-bridge motor drive module, and performing a status warning on the vehicle-mounted brake execution motor according to the current temperature sampling module.

[0005] In a second aspect, the present application also provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps in the vehicle-mounted braking execution circuit driving method described in any one of the above claims are implemented.

[0006] In a third aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the steps in any one of the above-mentioned methods for driving a vehicle-mounted braking execution circuit are implemented.

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

[0008] The vehicle-mounted brake execution circuit including the power reverse connection protection module, the H-bridge motor drive module, the current temperature sampling module and the main control unit is constructed, which provides a basic framework for the subsequent realization of various control and protection functions of the brake execution motor. The power supply of the vehicle-mounted brake execution motor is connected to the vehicle-mounted brake execution circuit to provide a power source for the entire brake execution circuit. According to the power reverse connection protection module, it is judged whether the power supply is reversely connected, and the result is fed back to the main control unit to avoid damage to components in the circuit due to power reverse connection, and ensure the safety and stability of the entire vehicle-mounted brake execution circuit. If the power supply is not reversely connected, according to the main control unit, it is judged whether the vehicle-mounted brake execution motor receives the PWM waveform, confirms whether the control instruction of the motor is successfully sent, and provides the prerequisite for the rotation of the motor. If the vehicle-mounted brake execution motor receives the PWM waveform, the PWM waveform is further analyzed according to the main control unit to judge whether the PWM waveform is a forward signal, and a waveform signal judgment result is generated. According to the waveform signal judgment result, the direction of motor rotation can be determined, and the H-bridge motor drive module is used to control the vehicle-mounted brake execution motor to achieve precise control of the motor rotation direction and state. The status of the vehicle-mounted brake execution motor is warned according to the current and temperature sampling module, and possible abnormalities of the motor are discovered in time to ensure the normal operation of the motor and improve the reliability of the entire brake system.

[0009] In summary, this application achieves precise control of the on-board brake actuator motor through a series of steps such as power reverse connection protection, motor drive control, and PWM waveform analysis, and uses the current temperature sampling module to warn the motor status, thereby achieving effective protection for the on-board brake actuator motor. Through these operations, this application improves the safety of the on-board brake circuit, avoids damage caused by power reverse connection, and at the same time enhances the accuracy of control, and can accurately control the operation of the motor; in addition, this application also greatly improves the safety and reliability of the entire on-board brake actuator circuit, thereby providing a guarantee for the stability and safe driving of the vehicle.

[0010] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic flow chart of a method for driving a vehicle-mounted brake execution circuit provided in an embodiment of the present application.

[0012] Figure 2 A schematic flow chart of controlling a vehicle-mounted brake actuator motor according to an H-bridge motor driving module based on a waveform signal judgment result in a vehicle-mounted brake actuator circuit driving method provided in an embodiment of the present application.

[0013] Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0014] Description of the reference numerals: bus 300 , receiver 301 , processor 302 , transmitter 303 , memory 304 , bus interface 305 . DETAILED DESCRIPTION

[0015] The embodiments of the present application provide a method, device and medium for driving a vehicle-mounted brake execution circuit. By constructing a vehicle-mounted brake 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 vehicle-mounted brake execution motor, and a current temperature sampling module is used to warn the motor status, thereby solving the technical problems that the existing vehicle-mounted brake circuit lacks a power reverse connection protection mechanism and an effective warning mechanism, and there is a risk of brake system failure, thereby achieving the technical effect of improving the stability, safety and response speed of the brake system, thereby achieving an accurate and smooth formulation process.

[0016] Embodiment 1, as Figure 1 As shown, the embodiment of the present application provides a safety protection method for a compartment-type intelligent grounding box, the method comprising:

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

[0018] Specifically, the on-board brake execution circuit is a circuit used to control the vehicle brake system, and is used to control the start and stop, steering, speed and status monitoring of the brake motor. The on-board brake execution circuit is constructed by integrating multiple functional modules such as the power reverse connection protection module, the H-bridge motor drive module, the current temperature sampling module and the main control unit, which provides a basic framework for the subsequent realization of various control and protection functions of the brake execution motor. In the on-board brake execution circuit, the power reverse connection protection module detects the connection method of the power supply to prevent the circuit from being damaged when the positive and negative poles of the power supply are reversed. The H-bridge motor drive module is responsible for controlling the direction and speed of the motor according to the signal sent by the main control unit. The module changes the direction of current flow by adjusting four switching elements (such as transistors) to achieve forward or reverse rotation of the motor. This control method makes the motor's steering more flexible and can accurately adjust the motor's operating state. The current temperature sampling module is used to continuously collect the current size in the circuit and the temperature of the motor when it is working. When the motor load is too high or the temperature is too high, this module will send an alarm to the main control unit in time to prevent the motor from overloading or overheating. The main control unit is responsible for coordinating the work of each module, receiving information and making decisions according to the set logic.

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

[0020] Specifically, the power supply of the on-board brake actuator motor is usually an on-board battery or power system, which is used to drive the motor to realize the braking operation of the vehicle. The power supply of the on-board brake actuator motor is connected to the on-board brake actuator circuit to provide power to the circuit so that the entire brake system starts working. The access to the power supply is the basic condition for the operation of the circuit. At this time, the power supply provides the necessary energy for the entire circuit, including powering the motor drive module so that the motor can start working.

[0021] Step S3: judging whether the power supply is reversely connected according to the power supply reverse connection protection module.

[0022] Specifically, after the power supply is connected to the on-board brake execution circuit, the power reverse protection module starts to work, detects the connected voltage, and compares it with the preset normal voltage range or reference voltage to determine whether the power supply is reversed. If the detected voltage polarity is different from the normal situation, for example, under normal circumstances, the positive voltage of the power supply is higher than the negative voltage, and when the negative voltage is detected to be higher than the positive voltage, it is determined that the power supply is reversed. When the power supply is connected correctly, the on-board brake execution circuit works normally; when the power supply is reversed, the power reverse protection module will automatically cut off the current to avoid circuit damage and ensure the safety of the braking system.

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

[0024] Specifically, the PWM waveform (pulse width modulation waveform) is a method of digitally encoding the analog signal level, and by adjusting the duty cycle (i.e. the ratio of the high level time to the cycle time), the motor speed and direction can be controlled. When the power is correctly connected, the main control unit starts to work, and by detecting specific input pins or communication interfaces, it determines whether the PWM signal has been successfully transmitted to the on-board brake actuator motor, thereby ensuring that the motor can receive the correct control signal.

[0025] Step S5: If the vehicle-mounted brake actuator motor receives the PWM waveform, it is determined whether the PWM waveform is a forward rotation signal according to the main control unit, and a waveform signal determination result is generated.

[0026] Specifically, when the vehicle-mounted brake actuator motor receives the PWM waveform, the main control unit analyzes the PWM waveform to determine whether the received PWM waveform is a forward signal. For example, the main control unit can determine whether it is a forward signal based on the duty cycle range, pulse frequency, or specific sequence of pulses of the PWM waveform. If the duty cycle of the received PWM waveform is within a certain range (a predefined duty cycle range corresponding to the forward signal), the main control unit determines that the PWM waveform is a forward signal; conversely, if the duty cycle of the received PWM waveform is not within this specific range (a predefined duty cycle range corresponding to the forward signal), the main control unit determines that the PWM waveform is a reverse signal. After the judgment is completed, the main control unit generates a corresponding waveform signal judgment result, which may be a digital signal (such as 1 for a forward signal, 0 for not) or a specific code for further controlling the actual movement of the motor.

[0027] Step S6: Based on the waveform signal judgment result, the vehicle-mounted brake actuator motor is controlled according to the H-bridge motor driving module, and a status warning is performed on the vehicle-mounted brake actuator motor according to the current 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. At the same time, the current and temperature sampling module monitors the current and temperature of the vehicle-mounted brake actuator motor in real time, and analyzes it to detect whether the motor is overloaded, overheated, or in other abnormal conditions. If the current or temperature exceeds the safety threshold, the current and temperature sampling module will generate a status warning signal to remind the main control unit that the motor has a potential fault or overload risk. The main control unit can take necessary protective measures based on this warning signal, such as reducing the motor load, reducing the motor speed, or shutting down the motor to prevent further damage to the motor or circuit.

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

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

[0031] Specifically, the PMOS shutdown instruction is a control instruction for instructing the PMOS device to stop working, that is, to change from the on state to the off state. In the circuit, the PMOS device plays a key role in controlling the on and off of the current, and the shutdown instruction can prevent the current from passing through the relevant circuit path.

[0032] When the power reverse protection module detects that the power is reversed, it triggers the PMOS shutdown command. At this time, the PMOS device in the power reverse protection module will change from the on state to the off state according to this shutdown command. In circuit design, the PMOS device is on the critical path of the power input. When it is on, it allows current to pass; when it is off, it is equivalent to cutting off the connection between the power supply and the subsequent circuit, thereby preventing reverse current from flowing into the circuit and protecting other electronic components, motors, etc. in the vehicle-mounted brake execution circuit. Through this automatic protection mechanism, the power reverse protection module can quickly cut off the power supply in the case of reverse power, ensuring the safety and reliability of the entire vehicle-mounted brake execution circuit.

[0033] Furthermore, if the vehicle-mounted brake execution motor does not receive the PWM waveform, a motor silent command is generated.

[0034] Specifically, the motor silent command is a command specifically issued to the vehicle's on-board braking execution motor. Its purpose is to put the motor into a silent state, that is, to stop any active operation of the motor, so that the motor remains stationary and no longer performs any actions related to rotation or braking.

[0035] If the main control unit determines that the motor does not receive the PWM waveform, it may be due to loss of control signal, brake system failure or other reasons. In this case, the main control unit generates a motor silent command to instruct the H-bridge motor driver module to stop driving the motor to ensure that the motor will not continue to run and prevent the motor from accidentally starting or continuing to run due to lack of control signal. This mechanism ensures that the motor will not malfunction when it cannot obtain effective control signals, further improving the safety and reliability of the entire brake system.

[0036] Further, such as Figure 2 As shown, in step S6 of the embodiment of the present application, based on the waveform signal judgment result, the vehicle-mounted brake execution motor is controlled according to the H-bridge motor driving module, and further includes:

[0037] Step S6-11: If the waveform signal judgment result is that the PWM waveform is not a forward rotation signal, a motor reverse rotation instruction is generated.

[0038] Step S6-12: If the waveform signal judgment result is that the PWM waveform is a forward rotation signal, a motor forward rotation instruction is generated.

[0039] Step S6-13: Transmitting the motor reverse rotation instruction or the motor forward rotation instruction to the H-bridge motor driving module.

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

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

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

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

[0044] After receiving the motor reversal command or the motor forward command, the H-bridge motor driver module will adjust the state of the switch element (such as MOSFET or transistor) according to the command, change the current flow direction of the vehicle brake actuator motor, and thus control the direction of the vehicle brake actuator motor. If the motor forward command is received, the H-bridge motor driver module turns the corresponding transistors on and off in a certain order, thereby providing a positive current path for the vehicle brake actuator motor and making the motor rotate forward. If the motor reverse command is received, the H-bridge motor driver module adjusts the turn-on and turn-off sequence of the transistors to provide a reverse current path for the vehicle brake actuator motor and achieve motor reverse.

[0045] Further, in step S6 of the embodiment of the present application, a status warning is performed on the vehicle-mounted brake actuator motor according to the current temperature sampling module, including a motor overtemperature warning and a motor overcurrent warning for the vehicle-mounted brake actuator motor, wherein the motor overtemperature warning for the vehicle-mounted brake actuator motor includes:

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

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

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

[0049] Specifically, the current temperature sampling module will continuously monitor the working state of the on-board brake actuator motor, measure the working temperature of the motor through the sensor, and obtain the real-time motor temperature parameters. These temperature data are dynamically changing and reflect the real-time temperature of the motor during operation. These collected real-time motor temperature parameters will be transmitted to the main control unit. After receiving these data, the main control unit compares them with the preset motor temperature threshold to determine whether the motor is overheated. This motor temperature threshold is a safety value, which is usually set by the manufacturer during design. If the actual operating temperature of the motor exceeds or equals this threshold, it means that the motor is at risk of overheating, which may cause motor damage or other failures. At this time, the main control unit generates a motor overheating warning signal. This warning signal can be a specific digital code or a level signal. For example, if the main control unit uses digital logic, the motor overheating warning signal will be indicated by a specific position 1 in a register; if the main control unit outputs through a level signal, the level of a certain output pin will be pulled up or down to indicate this warning signal to remind the operator or the braking system to handle it, such as reducing the motor load, stopping the motor operation, or enabling other cooling mechanisms to prevent the motor from being damaged due to overheating.

[0050] Furthermore, the vehicle-mounted brake actuator motor is provided with a motor overcurrent warning, including:

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

[0052] Step S6-25: Transmit the real-time motor current parameter to the main control unit to determine whether the real-time motor current parameter is greater than / equal to the motor current threshold.

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

[0054] Specifically, the current temperature sampling module monitors the working current of the motor in real time through the current sensor, obtains the real-time motor current parameters (that is, the real-time current value of the motor), and transmits these data to the main control unit. After receiving the real-time motor current parameters, the main control unit compares these data with the preset motor current threshold. This motor current threshold is a safety value set according to the rated current of the motor. Usually, the operating current of the motor should be kept below this threshold. If the current exceeds this threshold, it may mean that the motor is in an overloaded state. At this time, the main control unit generates a motor overcurrent warning signal. This signal reminds the operator or the brake system that the motor may be overloaded or faulty, and immediate measures need to be taken, such as reducing the load, stopping the motor, or starting other protection mechanisms.

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

[0056] Specifically, the voltage detection circuit is used to detect the polarity of the input voltage and whether it meets expectations. The circuit identifies whether the power supply is connected in reverse by comparing the input voltage with the set value. If the voltage is abnormal or reversed, the voltage detection circuit will sound an alarm or directly control the subsequent circuit for protection. PMOS is a metal oxide semiconductor field effect transistor used to control the switching state of current in the circuit. In the power reverse connection protection module, PMOS devices are usually used to control the flow of current, which can effectively cut off the current when the power supply is reversed to prevent circuit damage. A comparator is an electronic device that can compare two input voltages and output a high or low level signal. In the power reverse connection protection module, the comparator is used to compare the voltage with the reference voltage to determine whether the power supply is connected correctly. The control logic circuit is responsible for controlling the switching state of the PMOS device according to the output of the comparator to ensure that the circuit will start only when the power supply is connected correctly, otherwise the power supply will be disconnected.

[0057] When the power reverse connection protection module is working, the voltage detection circuit continuously monitors the voltage of the input power supply. The PMOS device works in conjunction with the comparator and the control logic circuit. The comparator compares the voltage detected by the voltage detection circuit with the preset reference voltage. If the detected voltage polarity does not match the normal situation (i.e., the power supply is reversed), the comparator will output a signal to the control logic circuit. The control logic circuit controls the on or off state of the PMOS device according to the signal of the comparator, thereby preventing the reverse current from passing through the circuit and protecting other circuit components from damage.

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

[0059] Specifically, the H-bridge motor driver is used to control the forward and reverse rotation of the DC motor by controlling four switching elements (such as transistors or MOSFETs) to change the direction of the current, thereby controlling the direction of rotation of the motor. The filter circuit is used to smooth the fluctuations of current or voltage and reduce the interference of high-frequency noise on the system. The filter circuit is usually composed of components such as capacitors and inductors to ensure that the current received by the motor driver is stable, thereby improving the smoothness and efficiency of the motor operation.

[0060] When the H-bridge motor driver module is working, it receives the instructions for controlling the motor (such as forward, reverse or speed adjustment instructions) issued by the main control unit, and the H-bridge motor driver adjusts the direction and size of the current output to the motor according to these instructions. The filter circuit is connected to the H-bridge motor driver to filter the current or voltage signal output by the H-bridge motor driver to make the signal transmission more stable, reduce noise and signal interference, and thus ensure the integrity of the signal. For example, when the motor is running at high speed, due to the interaction of the inductor, capacitor and other components in the circuit, some clutter signals may be generated. The filter circuit will remove these clutters, so that the motor receives a more stable drive signal, thereby ensuring the stable operation of the motor.

[0061] In summary, the vehicle-mounted brake execution circuit driving method provided by the embodiment of the present application has the following technical effects:

[0062] The vehicle-mounted brake execution circuit including the power reverse connection protection module, the H-bridge motor drive module, the current temperature sampling module and the main control unit is constructed, which provides a basic framework for the subsequent realization of various control and protection functions of the brake execution motor. The power supply of the vehicle-mounted brake execution motor is connected to the vehicle-mounted brake execution circuit to provide a power source for the entire brake execution circuit. According to the power reverse connection protection module, it is judged whether the power supply is reversely connected, and the result is fed back to the main control unit to avoid damage to components in the circuit due to power reverse connection, and ensure the safety and stability of the entire vehicle-mounted brake execution circuit. If the power supply is not reversely connected, according to the main control unit, it is judged whether the vehicle-mounted brake execution motor receives the PWM waveform, confirms whether the control instruction of the motor is successfully sent, and provides the prerequisite for the rotation of the motor. If the vehicle-mounted brake execution motor receives the PWM waveform, the PWM waveform is further analyzed according to the main control unit to judge whether the PWM waveform is a forward signal, and a waveform signal judgment result is generated. According to the waveform signal judgment result, the direction of motor rotation can be determined, and the H-bridge motor drive module is used to control the vehicle-mounted brake execution motor to achieve precise control of the motor rotation direction and state. The status of the vehicle-mounted brake execution motor is warned according to the current and temperature sampling module, and possible abnormalities of the motor are discovered in time to ensure the normal operation of the motor and improve the reliability of the entire brake system.

[0063] In general, the embodiment of the present application, through a series of steps such as power reverse connection protection, motor drive control, and PWM waveform analysis, ultimately achieves precise control of the vehicle-mounted brake actuator motor, and uses the current temperature sampling module to warn the motor status, thereby achieving effective protection of the vehicle-mounted brake actuator motor. Through these operations, the present application improves the safety of the vehicle-mounted brake circuit, avoids damage caused by power reverse connection, and at the same time enhances the accuracy of control, and can accurately control the operation of the motor; in addition, the embodiment of the present application also greatly improves the safety and reliability of the entire vehicle-mounted brake actuator circuit, thereby providing a guarantee for the stability and safe driving of the vehicle.

[0064] Embodiment 2, based on the same inventive concept of a vehicle-mounted braking execution circuit driving method in the aforementioned embodiment 1, the present application also provides an electronic device, comprising: 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 so that the at least one processor can execute the steps of any one of the methods described in the aforementioned embodiment 1.

[0065] like Figure 3 As shown, the bus architecture is represented by bus 300, which may include any number of interconnected buses and bridges, and bus 300 connects 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 peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described 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, namely a transceiver, providing a unit for communicating with various other devices on a transmission medium. Processor 302 is responsible for managing bus 300 and general processing, while memory 304 may be used to store data used by processor 302 when performing operations.

[0066] Embodiment three, based on the same inventive concept of a vehicle-mounted brake execution circuit driving method in the aforementioned embodiment one, the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the various processes of the aforementioned vehicle-mounted brake execution circuit driving method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0067] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be 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 the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for driving a vehicle-mounted brake execution circuit, characterized in that: The method comprises: Constructing an on-vehicle braking execution circuit, wherein the on-vehicle braking execution circuit includes a power reverse connection protection module, an H-bridge motor driving module, a current temperature sampling module and a main control unit; Connecting the power supply of the vehicle-mounted brake actuator motor to the vehicle-mounted brake actuator circuit; According to the power reverse connection protection module, determining whether the power supply is reversely connected; If the power supply is not reversely connected, judging whether the vehicle-mounted brake actuator motor receives a PWM waveform according to the main control unit; If the vehicle-mounted brake actuator motor 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 motor is controlled according to the H-bridge motor driving module, and the vehicle-mounted brake actuator motor is given a status warning according to the current temperature sampling module.

2. The method according to claim 1, characterized in that According to the power reverse connection protection module, determining whether the power supply is reversely connected includes: If the power supply is reversely connected, a PMOS shutdown instruction is triggered; Based on the PMOS shutdown instruction, the power supply is cut off according to the power reverse connection protection module.

3. The method according to claim 1, characterized in that If the vehicle-mounted brake execution motor does not receive the PWM waveform, a motor silent command is generated.

4. The method according to claim 1, characterized in that Based on the waveform signal judgment result, the vehicle-mounted brake actuator motor is controlled according to the H-bridge motor drive module, including: If the waveform signal judgment result is that the PWM waveform is not a forward rotation signal, a motor reverse rotation instruction is generated; If the waveform signal judgment result is that the PWM waveform is a forward rotation signal, a motor forward rotation instruction is generated; Transmitting the motor reversal instruction or the motor forward instruction to the H-bridge motor driving module; The H-bridge motor driving module controls the vehicle-mounted brake execution motor according to the motor reverse rotation instruction or the motor forward rotation instruction.

5. The method according to claim 1, characterized in that Performing a status warning on the vehicle-mounted brake actuator motor according to the current temperature sampling module includes: According to the current temperature sampling module, a real-time motor temperature parameter of the vehicle-mounted brake actuator motor is obtained; Transmitting the real-time motor temperature parameter to the main control unit, and determining whether the real-time motor temperature parameter is greater than / equal to a motor temperature threshold; If the real-time motor temperature parameter is greater than / equal to the motor temperature threshold, a motor over-temperature warning signal is generated.

6. The method according to claim 1, characterized in that Performing a status warning on the vehicle-mounted brake actuator motor according to the current temperature sampling module includes: According to the current temperature sampling module, obtaining the real-time motor current parameter of the vehicle-mounted brake actuator motor; Transmitting the real-time motor current parameter to the main control unit, and determining whether the real-time motor current parameter is greater than / equal to a motor current threshold; If the real-time motor current parameter is greater than / equal to the motor current threshold, a motor overcurrent warning signal is generated.

7. The method according to claim 1, characterized in that The power reverse connection protection module comprises a voltage detection circuit, a PMOS device, a comparator and a control logic circuit.

8. The method according to claim 1, characterized in that The H-bridge motor driving module includes an H-bridge motor driver and a filter circuit.

9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of a vehicle-mounted brake execution circuit driving method described in any one of claims 1-8 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of a vehicle-mounted brake execution circuit driving method as described in any one of claims 1 to 8 are implemented.

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