Vehicle motor control method and device, storage medium and vehicle

Abstract

The invention discloses a vehicle motor control method and device, a storage medium and a vehicle. The method comprises the steps that the current running state of vehicle-mounted audio receiving equipment is determined; and under the condition that the vehicle-mounted audio receiving equipment is in the running state of outputting the wireless broadcast audio, a vehicle motor is driven to work in a driving mode of continuously outputting driving signals. The running state of the vehicle-mounted audio receiving equipment is detected in real time, and when the vehicle-mounted receiving equipment is recognized to be in a working state, the driving mode of a vehicle motor is automatically switched into a continuous output (full-voltage output) driving mode, so that a high electromagnetic interference signal generated by the action of a high-frequency switch is fundamentally eliminated, and intelligent avoidance of an interference source is realized; the same-frequency interference on the wireless broadcast signal is completely eliminated, and the suppression effect on the interference of the wireless broadcast signal is effectively improved. In addition, the method does not need to change or add any hardware circuit, the method is completely realized through an embedded software module, and the overall cost is remarkably reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle control technology, specifically to a control method, device, storage medium, and vehicle for a vehicle motor. Background Technology

[0002] Driven by the trends of vehicle intelligence and electrification, an increasing number of in-vehicle electrical components are adopting motor drives, such as door handles and windows. Currently, pulse width modulation (PWM) technology is commonly used to control the vehicle's drive motor. However, the process of driving the vehicle motor using PWM technology generates electromagnetic interference signals at specific frequencies. When the vehicle's frequency modulation (FM) radio is operating, if this electromagnetic interference signal is within the FM broadcast frequency band, it will interfere with the normal reception of the FM signal, causing noise on the car radio, such as a buzzing sound, thus affecting the user's listening experience.

[0003] In related technologies, the above problems are solved by optimizing the drive module or internal hardware of the motor, for example, by adding shields or filters. However, this method can only alleviate the interference of PWM signals on FM broadcast signals to a certain extent, and cannot completely eliminate the interference. In addition, the modification of hardware increases the overall cost.

[0004] Therefore, how to effectively improve the suppression effect of PWM signal on the FM signal of car radio while reducing the overall cost has become an urgent problem to be solved. Summary of the Invention

[0005] In view of this, embodiments of this application provide a vehicle motor control method, apparatus, storage medium, and vehicle. By driving the device in a continuous pulse width modulation (PWM) signal drive mode when the audio receiving device is detected to be in a sensitive state susceptible to interference while receiving FM broadcast signals, electromagnetic interference signals are avoided, thereby effectively preventing interference with the FM broadcast reception signal.

[0006] In a first aspect, embodiments of this application provide a method for controlling a vehicle motor. The method includes: determining the current operating state of an in-vehicle audio receiving device; and driving the vehicle motor to operate through a first driving mode when the in-vehicle audio receiving device is in a first operating state, wherein the first operating state is when the in-vehicle audio receiving device is in an operating state of outputting wireless broadcast audio, and the first driving mode is driving the vehicle motor by continuously outputting driving signals.

[0007] As one possible implementation of the first aspect, the method further includes: driving the vehicle motor through a second driving mode when the vehicle audio receiving device is in a second operating state, wherein the second operating state is when the vehicle audio receiving device is not outputting wireless broadcast audio, and the second driving mode is driving the vehicle motor through a driving method of discontinuously outputting driving signals.

[0008] As one possible implementation of the first aspect, the discontinuous output drive signal is a pulse width modulation signal.

[0009] As one possible implementation of the first aspect, the first driving mode uses a pulse width modulation signal with a duty cycle of 100% as the driving signal, and the second driving mode uses a pulse width modulation signal with a duty cycle of less than 100% as the driving signal.

[0010] As one possible implementation of the first aspect, determining the operating status of the vehicle audio receiving device includes: real-time detection of a first status indication information and / or a second status indication information of the vehicle audio receiving device, wherein the first status indication information is used to characterize the on / off state of the vehicle audio receiving device, and the second status indication information is used to characterize the mute state of the vehicle audio receiving device; and determining the operating status of the vehicle audio receiving device based on at least one of the first status indication information and the second status indication information.

[0011] As one possible implementation of the first aspect, determining the operating state of the vehicle audio receiving device based on at least one of the first state indication information and the second state indication information includes: determining that the vehicle audio receiving device is in a second operating state when the first state indication information indicates that the vehicle audio receiving device is in a closed state or the second state indication information indicates that the vehicle audio receiving device is in a muted state; and determining that the vehicle audio receiving device is in a first operating state when the first state indication information indicates that the vehicle audio receiving device is in a closed state and the second state indication information indicates that the vehicle audio receiving device is in a non-mute state.

[0012] As one possible implementation of the first aspect, driving the vehicle motor to operate via a first drive mode includes: driving the vehicle motor to operate via the first drive mode in response to a control command for the vehicle motor.

[0013] Secondly, embodiments of this application provide a vehicle motor control device, the device comprising: a state determination module for determining the current operating state of an in-vehicle audio receiving device; and a motor drive module for driving the vehicle motor to operate through a first drive mode when the in-vehicle audio receiving device is in a first operating state, wherein the first operating state is when the in-vehicle audio receiving device is in an operating state of outputting wireless broadcast audio, and the first drive mode is driving the vehicle motor by continuously outputting drive signals.

[0014] Thirdly, embodiments of this application provide a computer-readable storage medium storing a computer program for performing the vehicle motor control method described in the first aspect.

[0015] Fourthly, embodiments of this application provide a vehicle including a processor; and a memory for storing processor-executable instructions, wherein the processor is used to execute the vehicle motor control method described in the first aspect.

[0016] This application provides a vehicle motor control method, device, storage medium, and vehicle. The method detects the operating status of the in-vehicle audio receiving device in real time. When the in-vehicle receiving device is detected to be in operation, it automatically switches the vehicle motor's drive mode to a continuous output (full voltage output) drive mode. This fundamentally avoids the high-frequency switching action of power devices during pulse width modulation, thereby eliminating high electromagnetic interference signals generated by high-frequency switching action. It achieves intelligent avoidance of interference sources and can completely eliminate co-channel interference to wireless broadcast signals, effectively improving the suppression effect of wireless broadcast signal interference. This ensures the quality of the wireless audio output from the in-vehicle audio receiving device and enhances the user's listening experience. Furthermore, the method described above is entirely implemented through embedded software modules, requiring no changes or additions to any hardware circuitry, significantly reducing overall costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a vehicle motor control system provided in an exemplary embodiment of this application.

[0019] Figure 2 This is a flowchart illustrating a vehicle motor control method provided in an exemplary embodiment of this application.

[0020] Figure 3 This is a flowchart illustrating another vehicle motor control method provided in an exemplary embodiment of this application.

[0021] Figure 4 This is an exemplary flowchart of an exemplary embodiment of this application for determining the operating status of an in-vehicle audio receiving device.

[0022] Figure 5 This is a schematic diagram of the structure of a vehicle motor control device provided in an exemplary embodiment of this application.

[0023] Figure 6 This is a block diagram of an electronic device for controlling a vehicle motor, provided in an exemplary embodiment of this application. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Application Overview Vehicle motor drive technology is a control technology that converts onboard electrical energy into mechanical energy through specific control components and strategies to drive various motors in the vehicle to perform corresponding functions. Currently, gate module control units combined with PWM voltage square wave modulation technology are commonly used to achieve motor drive control. PWM voltage square wave modulation technology is a method that controls the width (duty cycle) of high-level pulses in a digital signal to equivalently adjust the average voltage or current applied across the motor, thereby achieving precise control of the motor's speed, torque, or position.

[0026] However, when the gate module control unit applies PWM voltage through the H-bridge drive circuit, the motor generates electromagnetic interference signals of a specific frequency during startup, with a radiation range of 1m-5m. When the car radio is in operation, if this electromagnetic interference signal is within the FM broadcast frequency band (88MHz-108MHz), it will interfere with the normal reception of the FM signal, causing noise in the car radio and affecting the user's listening experience.

[0027] In related technologies, the above problems are addressed by optimizing the hardware inside the gate module control unit or motor, for example, by adding shields or filters. However, this approach can only alleviate the interference of electromagnetic interference signals generated during PWM motor drive on FM broadcast signals to a certain extent, reducing the interference intensity by 20%-30%, but it cannot completely eliminate the interference. In addition, the modifications to the hardware increase the overall cost.

[0028] To address the aforementioned technical problems, this application's embodiments creatively propose using a PWM signal (i.e., a continuously output drive signal) with a 100% duty cycle to drive the vehicle motor when the vehicle audio receiver is in the state of receiving FM signals. This avoids the generation of high-frequency harmonics during the process of driving the motor with the PWM signal, thereby preventing the generation of electromagnetic interference signals from the source and completely eliminating the interference of the PWM signal on the vehicle radio's FM signal, effectively improving the suppression effect of the PWM signal on the vehicle radio's FM signal.

[0029] Various non-limiting embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0030] Example vehicle motor control system Figure 1 This application provides a vehicle motor control system in some embodiments, such as... Figure 1 As shown, the vehicle motor control system 100 includes at least one vehicle motor 110, a control module 120, and an on-board audio receiver 130. The at least one vehicle motor 110 is connected to the control module 120.

[0031] At least one vehicle motor 110 may be a drive device that is respectively disposed in a corresponding vehicle component and drives the corresponding vehicle component to perform a specific mechanical action. For example, at least one vehicle motor may include a motor for driving the pop-out and retraction of a concealed door handle of the vehicle, a motor for driving the raising and lowering of the vehicle window, and a motor for driving the mirror surface of the vehicle's exterior rearview mirror to flip.

[0032] The control module 120 may be a control device for intelligent management of at least one vehicle motor. In some embodiments, the control module 120 may include a central control module 121 and at least one motor control module 122.

[0033] The central control module 121 serves as the control center of the vehicle motor control system, uniformly managing the driving process of at least one vehicle motor 110 and formulating driving strategies for at least one vehicle motor 110. For example, the central control module 121 may be a central processing unit (CPU).

[0034] At least one motor control module 122 is connected to at least one vehicle motor 110 and is used to drive at least one vehicle motor 110 to operate. For example, the motor control module 122 may be a gate module control device.

[0035] In some embodiments, the motor control module 122 may respond to a control command sent by the central control module 121 and drive at least one vehicle motor 110 to work according to the drive strategy in the control command, that is, the motor control module 122 only acts as a local actuator.

[0036] Considering that network latency may increase during control transmission over the network, in some embodiments, the motor control module 122 may also autonomously formulate a driving strategy based on the current state of the vehicle audio receiving device 130, and drive at least one vehicle motor 110 to work using the driving strategy.

[0037] The vehicle audio receiving device 130 can be a device for implementing vehicle audio functions. For example, the vehicle audio receiving device can be a head unit (HUT) with a built-in FM radio module, allowing the user to listen to FM radio broadcasts.

[0038] In some embodiments, the control module 120 can obtain the status information of the vehicle audio receiving device 130 through the Controller Area Network (CAN) bus.

[0039] In some embodiments, the vehicle motor control system 100 may further include an audio status detection device, through which the control module 120 can obtain the status information of the vehicle audio receiving device 130.

[0040] In some embodiments, the control method for the vehicle motor described below can be executed by the control module 120.

[0041] Exemplary vehicle motor control method To further illustrate the process of controlling a vehicle motor, this application provides a flowchart of a vehicle motor control method. Figure 2 The control method for the vehicle motor is applied to the vehicle motor control system 100.

[0042] In some embodiments, such as Figure 2 As shown, the control module 120 in the vehicle motor control system can perform the following steps: S210. Determine the current operating status of the vehicle-mounted audio receiving device.

[0043] In-vehicle audio receiving equipment can be a device installed in a vehicle to enable vehicle audio functions.

[0044] In some embodiments, the in-vehicle audio receiving device includes a radio function module for receiving and demodulating wireless broadcast signals. Exemplarily, the in-vehicle audio receiving device may be a multimedia head unit with an integrated radio function module; or it may be a dedicated radio function module separate from the multimedia head unit, such as an FM / AM audio converter.

[0045] In some embodiments, status information of the in-vehicle audio receiver can be obtained, and the operating status of the in-vehicle audio receiver can be determined based on this status information. For example, information characterizing the on / off state and mute state of the in-vehicle audio receiver can be obtained. For detailed information on the status information of the in-vehicle audio receiver and how to determine its operating status, please refer to [link to relevant documentation]. Figure 4 The relevant descriptions in the embodiments thereof.

[0046] In some embodiments, the status information of the in-vehicle audio receiving device can be continuously acquired in real time to monitor the operating status of the in-vehicle audio receiving device.

[0047] In some embodiments, the status information of the in-vehicle audio receiving device can also be acquired and its operating status detected in response to a preset specific trigger condition. For example, the trigger condition can be set to the activation of a device that might interfere with the in-vehicle audio receiving device's reception of wireless broadcast audio signals. For instance, the activation of a vehicle motor driven by a pulse-width modulation signal can be preset as the trigger condition. By acquiring the status information of the in-vehicle audio receiving device before such interfering devices are activated, potential interference sources can be identified and avoided in a timely manner while the audio device is in operation, thereby effectively preventing interference with the reception of wireless broadcast audio signals.

[0048] S220. When the vehicle audio receiving device is in the first operating state, the vehicle motor is driven to work through the first drive mode.

[0049] In some embodiments, such as Figure 3 As shown, the control method for the vehicle motor may also include the following steps: S230. When the vehicle audio receiving device is in the second operating state, the vehicle motor is driven to work through the second drive mode.

[0050] The first operating state is when the vehicle audio receiving device is in the state of outputting wireless broadcast audio, and the first driving mode is to drive the vehicle motor by continuously outputting driving signals.

[0051] The second operating state is when the vehicle audio receiving device is not outputting wireless broadcast audio, and the second driving mode is to drive the vehicle motor through a driving method that outputs driving signals discontinuously.

[0052] In some embodiments, a pulse width modulation (PWM) signal is used as the drive signal to drive the vehicle motor. Considering that the high-frequency harmonic components generated by the PWM signal may fall within the frequency range of the radio broadcast signal, thereby interfering with the normal reception of the radio broadcast signal by the in-vehicle audio receiver, in some embodiments, a drive mode suitable for the current operating state of the in-vehicle audio receiver is determined based on the operating state of the in-vehicle audio receiver, and the vehicle motor is driven based on this drive mode. That is, different drive modes (first drive mode and second drive mode) are selectively switched for different operating states of the in-vehicle audio receiver to drive the vehicle motor, so as to ensure the normal operation of the vehicle motor while avoiding interference with the radio broadcast signal (FM or AM broadcast signal), thereby improving audio playback quality and the user's listening experience.

[0053] In some embodiments, in response to a control command for the vehicle motor, a drive mode for the vehicle motor is determined, and the vehicle motor is driven to operate in the determined drive mode.

[0054] For example, when the in-vehicle audio receiving device is in operation outputting wireless broadcast audio, it is in an interference-sensitive operating state. In this case, the vehicle motor is driven by continuously outputting drive signals, for example, by using a pulse width modulation signal with a 100% duty cycle. Under this condition, the pulse width modulation signal does not generate high-order harmonic components, thereby avoiding the generation of interference sources and completely eliminating interference to the wireless broadcast signal.

[0055] When the vehicle audio receiving device is in a non-operating state (not outputting wireless broadcast audio), i.e., in a non-interference sensitive state, the vehicle motor is driven by a discontinuous output drive signal. For example, a pulse width modulation signal with a duty cycle of 85% is used as the drive signal to drive the vehicle motor, so as to reduce the motor noise when the vehicle motor is working and the mechanical impact sound when the motor stops, while ensuring the smoothness of the vehicle motor driving the corresponding electrical components (e.g., the vehicle's hidden door handles).

[0056] It should be noted that the pulse width modulation (PWM) signals and their duty cycles used in the above-listed discontinuous output drive signal driving modes are merely examples. In practical applications, other driving methods or PWM signals with other duty cycles can also be used to drive the vehicle motor. For example, a PWM signal with a duty cycle of 80% can be used as the drive signal to drive the vehicle motor. Generally, the duty cycle of the PWM signal is proportional to the driving force it generates; the larger the duty cycle, the greater the driving force. The duty cycle of the PWM signal for the vehicle motor can be flexibly set according to the required driving force of the drive element, and this application does not impose specific limitations on this.

[0057] Considering the varying audio quality requirements of users for in-vehicle audio receivers in practical applications, in some embodiments, when the in-vehicle audio receiver is in its first operating state (working state), multiple drive modes with different drive levels can be set to cater to different levels of user concern regarding the sound quality of the audio output by the in-vehicle audio receiver.

[0058] Considering that when a user sets the playback volume of the in-vehicle audio receiver to a low level, it may indicate that the user is not focusing on the audio content, perhaps using it as background noise or engaging in conversation, resulting in relatively low requirements for output audio quality and a higher tolerance for minor interference; conversely, when a user sets the playback volume of the in-vehicle audio receiver to a high level, it may indicate that the user is focused on listening to the audio and has higher requirements for audio quality. Therefore, in some embodiments, when the in-vehicle audio receiver is detected to be in operation, the volume information of the output audio from the in-vehicle audio receiver can be acquired. Based on the volume information, the user's level of attention to the output audio quality can be determined. Based on the determined level of attention, a corresponding drive mode is matched to the vehicle motor, and the vehicle motor is controlled to operate using the matched drive mode, achieving a precise match between audio quality and interference suppression, and realizing more refined and personalized interference suppression.

[0059] For example, three different drive modes with varying audio playback volume levels can be set. Specifically, volume thresholds can be preset. When the audio playback volume is greater than or equal to a first volume threshold and less than a second volume threshold, the user's attention level is determined to be low, and the vehicle motor is driven using the drive mode corresponding to the low drive level. When the audio playback volume is greater than or equal to the second volume threshold and less than a third volume threshold, the user's attention level is determined to be medium, and the vehicle motor is driven using the drive mode corresponding to the medium drive level. When the audio playback volume is greater than or equal to the third volume threshold, the user's attention level is determined to be high, and the vehicle motor is driven using the drive mode corresponding to the high drive level. The first volume threshold is less than the second volume threshold, and the second volume threshold is less than the third volume threshold. For example, the first volume threshold could be set to 20, the second volume threshold to 50, and the third volume threshold to 80. The driving mode corresponding to the low drive level can use a pulse width modulation signal with a duty cycle of 90% to drive the vehicle motor; the driving mode corresponding to the medium drive level can use a pulse width modulation signal with a duty cycle of 95% to drive the vehicle motor; and the driving mode corresponding to the high drive level can use a pulse width modulation signal with a duty cycle of 100% to drive the vehicle motor. The higher the duty cycle of the pulse width modulation signal used to drive the vehicle, the lower the interference with the wireless audio signal. Using the driving mode corresponding to the high drive level to drive the vehicle motor can basically completely eliminate the interference of the pulse width modulation signal with the wireless broadcast signal.

[0060] It should be noted that the number of volume levels and drive levels listed above is merely an example. Two volume levels and two drive levels can also be set. This application does not impose specific limitations on the division of volume levels and drive levels, and can be flexibly set according to actual needs.

[0061] In some embodiments, based on historical usage data of the in-vehicle audio receiver, user habits can be analyzed to predict the duration of user use of the in-vehicle audio receiver, thereby pre-adjusting the vehicle motor's drive mode to reduce the response delay from state recognition to switching drive modes to complete interference suppression. For example, a user habit model can be constructed. Specifically, historical on / off times, single usage duration, usage frequency, and related contextual information (e.g., the time elapsed between the in-vehicle audio receiver being turned on and the vehicle's startup time, the type of date (weekday, weekend), or frequently used driving routes) of the in-vehicle audio receiver can be continuously collected and recorded to form a time-series dataset. This time-series data can then be used as training samples to train the user habit model.

[0062] In some embodiments, the user habit model can be a machine learning model, such as a time-series prediction model, an attention-based neural network model, or a hidden Markov model.

[0063] In practical applications, in addition to the vehicle motor using pulse width modulation signals interfering with the process of the vehicle audio receiving equipment receiving wireless broadcast signals during operation, there may also be other components that may generate interference factors that interfere with the wireless broadcast signals.

[0064] In some embodiments, when the vehicle audio receiving device is detected to be in a working state (first operating state), it is further identified whether there are other interfering components in the vehicle besides the vehicle motor that may interfere with the wireless broadcast signal. Upon identification of an interfering component, the current operating state of that component is obtained. For example, interfering components may include a vehicle inverter, an in-vehicle auxiliary power supply, and LED headlights using switching dimming technology. The vehicle inverter and in-vehicle auxiliary power supply may generate broadband electromagnetic noise due to their high-frequency switching operations, and their spectrum may cover the frequency band of the wireless broadcast signal, thereby interfering with the wireless broadcast signal. The driving circuit of the LED headlights using switching dimming technology may emit high-frequency harmonic interference. When it is determined that the vehicle audio receiving device is in a working state, and an interfering component is also detected to be in a working state, based on the importance level of the function corresponding to the interfering component in a working state, it is determined whether to shut down the interfering component or switch its operating mode, so as to minimize interference with the wireless broadcast audio while maintaining normal vehicle operation.

[0065] As an example, if the vehicle inverter is detected to be active when the vehicle audio receiver is in operation, and its function is to power portable devices, its importance level is low. The vehicle inverter can be temporarily turned off or switched to standby mode. If the LED headlights using switching dimming technology are detected to be active, and its function is determined to be a safety-critical function related to nighttime driving safety, its importance level is high. The duty cycle of the pulse width modulation signal controlling the LED headlights can be adjusted, and the dimming frequency of the pulse width modulation can be adjusted to a specific frequency point far away from the frequency band of radio broadcast audio signals (FM / AM), or the constant current drive mode can be switched to control the LED headlights.

[0066] In summary, by real-time monitoring of the in-vehicle audio receiver's operating status, the system automatically switches the vehicle motor's drive mode to continuous output (full voltage output) when the receiver is detected to be operational. This fundamentally avoids the high-frequency switching of power devices during pulse width modulation, thereby eliminating high-frequency electromagnetic interference signals generated by these switching actions. This intelligent avoidance of interference sources completely eliminates co-channel interference with radio broadcast signals, effectively improving the suppression of radio broadcast signal interference and ensuring the quality of the wireless audio output from the in-vehicle audio receiver, thus enhancing the user's listening experience. Furthermore, the method described above is implemented entirely through embedded software modules, requiring no changes or additions to any hardware circuitry, significantly reducing overall costs.

[0067] Exemplary method for determining the operating status of an in-vehicle audio receiving device To further illustrate the specific process of determining the operating status of an audio receiving device in a vehicle, this application also provides an exemplary flowchart for determining the operating status of an in-vehicle audio receiving device ( Figure 4 ).

[0068] In some embodiments, such as Figure 4 As shown, the control module 120 in the vehicle motor control system can perform the following steps: S410, Real-time detection of the first status indication information and / or second status indication information of the vehicle audio receiving device.

[0069] The first state indication information is used to characterize the on / off state of the vehicle audio receiver, and the second state indication information is used to characterize the mute state of the vehicle audio receiver.

[0070] For example, the first state indication information can be the AudioMode signal. Specifically, when the AudioMode signal is 1, it indicates that the in-vehicle audio receiver is on; when the AudioMode signal is 0, it indicates that the in-vehicle audio receiver is off. The second state indication information can be the Mute signal. When the Mute signal is 1, it indicates that the in-vehicle audio receiver is muted; when the Mute signal is 0, it indicates that the in-vehicle audio receiver is not muted.

[0071] In some embodiments, the first status indication information and / or the second status indication information of the vehicle audio receiving device can be obtained through the Controller Area Network (CAN) bus to ensure the accuracy of the obtained status information.

[0072] In some embodiments, the status indication information of the in-vehicle audio receiving device can also be obtained through a dedicated audio status detection device. For example, the audio status detection device may be an FM carrier detection device installed in the vehicle, etc.

[0073] S420. Determine the operating status of the vehicle-mounted audio receiving device based on at least one of the first status indication information and the second status indication information.

[0074] In some embodiments, such as Figure 4 As shown, S420 may include the following sub-steps: When the first state indication information indicates that the vehicle audio receiving device is in the off state or the second state indication information indicates that the vehicle audio receiving device is in the mute state, it is determined that the vehicle audio receiving device is in the second operating state.

[0075] When the first status indication information indicates that the vehicle audio receiving device is in the on state and the second status indication information indicates that the vehicle audio receiving device is in the non-mute state, it is determined that the vehicle audio receiving device is in the first operating state.

[0076] In some embodiments, either a first state indication information or a second state indication information can be obtained, and the operating state of the vehicle audio receiving device can be determined based on the obtained state indication information. For example, the on-state indication information (first state indication information) of the vehicle audio receiving device can be obtained. When the on-state indication information indicates that the vehicle audio receiving device is on (AudioMode signal is 1), it can be determined that the vehicle audio receiving device is in a first operating state, i.e., an interference-sensitive state. When the on-state indication information indicates that the vehicle audio receiving device is off (AudioMode signal is 0), it can be determined that the vehicle audio receiving device is in a second operating state, i.e., a non-interference-sensitive state.

[0077] To avoid misjudgments and improve the accuracy of status detection for in-vehicle audio receivers, in some embodiments, first status indication information and second status indication information can be acquired simultaneously. The current operating status of the in-vehicle audio receiver, i.e., whether the in-vehicle audio receiver is in a state of valid audio output, is determined by combining the first status indication information (on status indication information) and the second status indication information (mute status indication information). For example, when the on status indication information indicates that the in-vehicle audio receiver is on while the mute status indication information indicates that the in-vehicle audio receiver is in a non-mute state (AudioMode signal is 1 and Mute signal is 0), the in-vehicle audio receiver is determined to be in a first operating state (i.e., an interference-sensitive state). When the on status indication information indicates that the in-vehicle audio receiver is on while the mute status indication information indicates that the in-vehicle audio receiver is in a mute state (AudioMode signal is 1 and Mute signal is 1), the in-vehicle audio receiver is determined to be in a second operating state (i.e., a non-interference-sensitive state).

[0078] It should be noted that the types (on status indication information and mute indication information) and quantities of status indication information and the methods for determining the status of the vehicle audio receiving device listed in the above embodiments are merely examples. This application does not specifically limit the types and quantities of status indication information or the methods for determining the status of the vehicle audio receiving device.

[0079] In some embodiments, the sound of the vehicle audio receiving device can be collected by a microphone array in the vehicle, and then the collected sound can be identified by an audio recognition algorithm to determine the operating status of the vehicle audio receiving device. Alternatively, a vibration sensor can be set on the speaker array to detect the vibration signal of the speaker array, extract the audio characteristics of the vibration signal through a bandpass filter, and then analyze the vibration amplitude and vibration frequency of the vibration signal through a signal analysis module to determine the operating status of the vehicle audio receiving device.

[0080] To further illustrate the overall application process of the vehicle motor control method, the following describes the application process of the vehicle motor control method provided in this application dynamically through a specific in-vehicle scenario. Assume that a user turns on the in-vehicle FM radio (the aforementioned in-vehicle audio receiving device) to listen to the radio while driving, and simultaneously operates the window switch to close the window. At this time, the vehicle controller (the aforementioned central control module) generates a window-raising command and sends it to the door control module (the aforementioned motor control module) responsible for that window. After receiving the command, the door control module obtains the current status signal of the FM radio via the CAN bus. Based on the obtained status signal: AudioMode=1 (FM radio on) and Mute=0 (not muted), the door control module determines that the in-vehicle FM radio is in a working state (interference sensitive and easily interfered with). Based on the detected status information of the in-vehicle FM radio, the door control module abandons the conventional driving strategy (second driving mode) using an 85% duty cycle PWM signal as the driving signal, and adopts the first driving mode of continuously outputting driving signals, that is, generating a PWM signal with a 100% duty cycle to drive the window motor. Because the drive signal is continuous, the high-frequency components in the electromagnetic interference spectrum generated by the window motor drive circuit are greatly suppressed, thus avoiding co-channel interference from the car FM radio and ensuring clear, noise-free broadcast sound quality. Once the window closing action is complete, the drive stops. Afterwards, if the user turns off the radio, when the user tries to open the window again, the door control module checks the current operating status of the car FM radio. Based on the detected status information (AudioMode=0), it determines that the car FM radio is off and adopts the conventional second drive mode, i.e., using a PWM signal with an 85% duty cycle as the drive signal to drive the window motor, in order to optimize motor operating noise and energy efficiency.

[0081] Exemplary vehicle motor control device The above text combined Figures 1-4 The method embodiments of this application have been described in detail. The device embodiments of the vehicle motor control device of this application are described in detail below. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the device embodiments; therefore, any parts not described in detail can be referred to the foregoing method embodiments. Figure 5 This is a schematic diagram of a system module of a vehicle motor control device shown in some embodiments of this application.

[0082] like Figure 5 As shown, the vehicle motor control device 500 may include a status determination module 510 and a motor drive module 520.

[0083] The status determination module 510 can be configured to determine the current operating status of the vehicle audio receiving device.

[0084] The motor drive module 520 can be configured to drive the vehicle motor through a first drive mode when the in-vehicle audio receiver is in a first operating state. The first operating state is when the in-vehicle audio receiver is outputting wireless broadcast audio, and the first drive mode is driving the vehicle motor by continuously outputting drive signals.

[0085] In-vehicle audio receiving equipment can be a device installed in a vehicle to enable vehicle audio functions.

[0086] In some embodiments, the in-vehicle audio receiving device includes a radio function module for receiving and demodulating wireless broadcast signals. Exemplarily, the in-vehicle audio receiving device may be a multimedia head unit with an integrated radio function module; or it may be a dedicated radio function module separate from the multimedia head unit, such as an FM / AM audio converter.

[0087] In some embodiments, the state determination module 510 may further be configured to: acquire state information of the vehicle audio receiving device, and determine the operating state of the vehicle audio receiving device based on the state information. For example, information characterizing the on / off state and mute state of the vehicle audio receiving device may be acquired. For detailed information on the state information of the vehicle audio receiving device and the determination of its operating state, please refer to [link to relevant documentation]. Figure 4 The relevant descriptions in the embodiments thereof.

[0088] In some embodiments, the status determination module 510 can also be configured to: continuously acquire the status information of the vehicle audio receiving device in real time, and monitor the operating status of the vehicle audio receiving device in real time.

[0089] In some embodiments, the state determination module 510 can also be configured to: acquire state information of the vehicle audio receiving device and detect the operating state of the vehicle audio receiving device in response to a preset specific trigger condition. For example, the trigger condition can be set to the activation of a device that might interfere with the vehicle audio receiving device's reception of wireless broadcast audio signals. For instance, the activation of a vehicle motor driven by a pulse-width modulation signal can be preset as the trigger condition. By acquiring the state information of the vehicle audio receiving device before such interfering devices are activated, potential interference sources can be identified and avoided in a timely manner when the audio device is in operation, thereby effectively preventing interference with the reception of wireless broadcast audio signals.

[0090] In some embodiments, the motor drive module 520 can also be configured to drive the vehicle motor through a second drive mode when the in-vehicle audio receiving device is in a second operating state.

[0091] The first operating state is when the vehicle audio receiving device is in the state of outputting wireless broadcast audio, and the first driving mode is to drive the vehicle motor by continuously outputting driving signals.

[0092] The second operating state is when the vehicle audio receiving device is not outputting wireless broadcast audio, and the second driving mode is to drive the vehicle motor through a driving method that outputs driving signals discontinuously.

[0093] In some embodiments, the motor drive module 520 can also be configured to drive the vehicle motor using a pulse width modulation (PWM) signal as the drive signal. Considering that the high-frequency harmonic components generated by the PWM signal may fall within the frequency range of the radio broadcast signal, thereby interfering with the normal reception of the radio broadcast signal by the in-vehicle audio receiving device, in some embodiments, a drive mode suitable for the current operating state of the in-vehicle audio receiving device is determined based on the operating state of the in-vehicle audio receiving device, and the vehicle motor is driven based on this drive mode. That is, different drive modes (first drive mode and second drive mode) are selectively switched for different operating states of the in-vehicle audio receiving device to drive the vehicle motor, so as to ensure the normal operation of the vehicle motor while avoiding interference with the radio broadcast signal (FM or AM broadcast signal), thereby improving audio playback quality and the user's listening experience.

[0094] In some embodiments, the motor drive module 520 may also be configured to: determine the drive mode of the vehicle motor in response to a control command of the vehicle motor, and drive the vehicle motor to work through the determined drive mode.

[0095] For example, when the in-vehicle audio receiving device is in operation outputting wireless broadcast audio, it is in an interference-sensitive operating state. In this case, the vehicle motor is driven by continuously outputting drive signals, for example, by using a pulse width modulation signal with a 100% duty cycle. Under this condition, the pulse width modulation signal does not generate high-order harmonic components, thereby avoiding the generation of interference sources and completely eliminating interference to the wireless broadcast signal.

[0096] When the vehicle audio receiving device is in a non-operating state (not outputting wireless broadcast audio), i.e., in a non-interference sensitive state, the vehicle motor is driven by a discontinuous output drive signal. For example, a pulse width modulation signal with a duty cycle of 85% is used as the drive signal to drive the vehicle motor, so as to reduce the motor noise when the vehicle motor is working and the mechanical impact sound when the motor stops, while ensuring the smoothness of the vehicle motor driving the corresponding electrical components (e.g., the vehicle's hidden door handles).

[0097] It should be noted that the pulse width modulation (PWM) signals and their duty cycles used in the above-listed discontinuous output drive signal driving modes are merely examples. In practical applications, other driving methods or PWM signals with different duty cycles can also be used to drive the vehicle motor. For example, a PWM signal with a duty cycle of 80% can be used as the drive signal to drive the vehicle motor. Generally, the duty cycle of the PWM signal is proportional to the driving force it generates; the larger the duty cycle, the greater the driving force. The duty cycle of the PWM signal for the vehicle motor can be flexibly set according to the required driving force of the drive element, and this application does not impose specific limitations on this.

[0098] Considering the varying audio quality requirements of users for in-vehicle audio receivers in practical applications, in some embodiments, when the in-vehicle audio receiver is in its first operating state (working state), multiple drive modes with different drive levels can be set to cater to different levels of user concern regarding the sound quality of the audio output by the in-vehicle audio receiver.

[0099] Considering that when a user sets the playback volume of the in-vehicle audio receiver to a low level, it may indicate that the user is not focusing on the audio content, perhaps using it as background noise or engaging in conversation, thus having relatively low requirements for the output audio quality and a higher tolerance for minor interference; conversely, when a user sets the playback volume of the in-vehicle audio receiver to a high level, it may indicate that the user is focused on listening to the audio and has higher requirements for audio quality. Therefore, in some embodiments, when the in-vehicle audio receiver is detected to be in operation, the volume information of the output audio from the in-vehicle audio receiver can be acquired. Based on the volume information, the user's level of attention to the output audio quality can be determined. Based on the determined level of attention, a corresponding drive mode is matched to the vehicle motor, and the vehicle motor is controlled to operate using the matched drive mode, achieving a precise match between audio quality and interference suppression, and realizing more refined and personalized interference suppression.

[0100] For example, three different drive modes with varying audio playback volume levels can be set. Specifically, volume thresholds can be preset. When the audio playback volume is greater than or equal to a first volume threshold and less than a second volume threshold, the user's attention level is determined to be low, and the vehicle motor is driven using the drive mode corresponding to the low drive level. When the audio playback volume is greater than or equal to the second volume threshold and less than a third volume threshold, the user's attention level is determined to be medium, and the vehicle motor is driven using the drive mode corresponding to the medium drive level. When the audio playback volume is greater than or equal to the third volume threshold, the user's attention level is determined to be high, and the vehicle motor is driven using the drive mode corresponding to the high drive level. The first volume threshold is less than the second volume threshold, and the second volume threshold is less than the third volume threshold. For example, the first volume threshold could be set to 20, the second volume threshold to 50, and the third volume threshold to 80. The driving mode corresponding to the low drive level can use a pulse width modulation signal with a duty cycle of 90% to drive the vehicle motor; the driving mode corresponding to the medium drive level can use a pulse width modulation signal with a duty cycle of 95% to drive the vehicle motor; and the driving mode corresponding to the high drive level can use a pulse width modulation signal with a duty cycle of 100% to drive the vehicle motor. The higher the duty cycle of the pulse width modulation signal used to drive the vehicle, the lower the interference with the wireless audio signal. Using the driving mode corresponding to the high drive level to drive the vehicle motor can basically completely eliminate the interference of the pulse width modulation signal with the wireless broadcast signal.

[0101] It should be noted that the number of volume levels and drive levels listed above is merely an example. Two volume levels and two drive levels can also be set. This application does not impose specific limitations on the division of volume levels and drive levels, and can be flexibly set according to actual needs.

[0102] In some embodiments, a user habit prediction module may also be included, configured to: analyze user usage habits of the in-vehicle audio receiver based on historical usage data of the in-vehicle audio receiver, predict the user's usage time of the in-vehicle audio receiver, and thereby pre-adjust the vehicle motor's drive mode to reduce the response delay from state recognition to switching drive modes to complete interference suppression. For example, a user habit model can be constructed. Specifically, historical on / off time information, single usage duration, usage frequency, and related contextual information (e.g., the time elapsed between the in-vehicle audio receiver being turned on and the vehicle's startup time, the type of date (weekday, weekend), or frequently used driving routes) of the in-vehicle audio receiver can be continuously collected and recorded to form a time-series dataset. This time-series data is used as training samples to train the user habit model.

[0103] In some embodiments, the user habit model can be a machine learning model, such as a time-series prediction model, an attention-based neural network model, or a hidden Markov model.

[0104] In practical applications, in addition to the vehicle motor using pulse width modulation signals interfering with the process of the vehicle audio receiving equipment receiving wireless broadcast signals during operation, there may be other components that may also generate interference factors that interfere with the wireless broadcast signals.

[0105] In some embodiments, when the vehicle audio receiving device is detected to be in a working state (first operating state), it is further identified whether there are other interfering components in the vehicle besides the vehicle motor that may interfere with the wireless broadcast signal. Upon identification of an interfering component, the current operating state of that component is obtained. For example, interfering components may include a vehicle inverter, an in-vehicle auxiliary power supply, and LED headlights using switching dimming technology. The vehicle inverter and in-vehicle auxiliary power supply may generate broadband electromagnetic noise due to their high-frequency switching operations, and their spectrum may cover the frequency band of the wireless broadcast signal, thereby interfering with the wireless broadcast signal. The driving circuit of the LED headlights using switching dimming technology may emit high-frequency harmonic interference. When it is determined that the vehicle audio receiving device is in a working state, and an interfering component is also detected to be in a working state, based on the importance level of the function corresponding to the interfering component in a working state, it is determined whether to shut down the interfering component or switch its operating mode, so as to minimize interference with the wireless broadcast audio while maintaining normal vehicle operation.

[0106] As an example, if the vehicle inverter is detected to be active when the in-vehicle audio receiver is in operation, its function is determined to be powering portable devices, and its importance level is low. The in-vehicle inverter can be temporarily turned off or switched to standby mode. If the LED headlights using switching dimming technology are detected to be active, its function is determined to be a safety-critical function related to nighttime driving safety, and its importance level is high. The duty cycle of the pulse width modulation signal controlling the LED headlights can be adjusted, and the dimming frequency of the pulse width modulation can be adjusted to a specific frequency point far away from the frequency band of radio broadcast audio signals (FM / AM), or the constant current drive mode can be switched to control the LED headlights.

[0107] In some embodiments, the status determination module 510 may also be configured to: detect in real time the first status indication information and / or the second status indication information of the vehicle audio receiving device.

[0108] In some embodiments, the status determination module 510 may also be configured to determine the operating status of the vehicle audio receiving device based on at least one of the first status indication information and the second status indication information.

[0109] The first state indication information is used to characterize the on / off state of the vehicle audio receiver, and the second state indication information is used to characterize the mute state of the vehicle audio receiver.

[0110] For example, the first state indication information can be the AudioMode signal. Specifically, when the AudioMode signal is 1, it indicates that the in-vehicle audio receiver is on; when the AudioMode signal is 0, it indicates that the in-vehicle audio receiver is off. The second state indication information can be the Mute signal. When the Mute signal is 1, it indicates that the in-vehicle audio receiver is muted; when the Mute signal is 0, it indicates that the in-vehicle audio receiver is not muted.

[0111] It should be understood that specific limitations regarding the apparatus can be found in the limitations regarding the method described above, and will not be repeated here. Each module in the aforementioned apparatus can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in hardware or independently of the processor in a computer device, or stored in software in the memory of a computer device, so that the processor can call and execute the operations corresponding to each module.

[0112] Exemplary electronic devices and computer-readable storage media This application also provides an electronic device, such as Figure 6 As shown. The electronic device 600 provided in this application includes a memory 610, a processor 620, and an input / output interface 630. The memory 610, processor 620, and input / output interface 630 are connected via internal connection paths. The memory 610 stores instructions, and the processor 620 executes the instructions stored in the memory 610 to control the input / output interface 630 to receive input data and information, and output operation results and other data.

[0113] It should be understood that in the embodiments of this application, the processor 620 may be a general-purpose central processing unit (CPU), GPU, FPGA, microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits to execute related programs in order to implement the technical solutions provided in the embodiments of this application.

[0114] The memory 610 may include read-only memory and random access memory, and provides instructions and data to the processor 620. A portion of the processor 620 may also include non-volatile random access memory. For example, the processor 620 may also store device type information.

[0115] In implementation, each step of the above method can be completed by the integrated logic circuits in the hardware of the processor 620 or by instructions in software form. The method for controlling a vehicle motor disclosed in the embodiments of this application can be directly implemented by the hardware processor, or by a combination of hardware and software modules in the processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory 610, and the processor 620 reads the information in memory 610 and combines it with its hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here. This application also provides a computer program product, including a computer program / instructions. When the computer program / instructions in the computer program product provided in this application are executed by the processor, the vehicle motor control method provided in this application can be implemented.

[0116] All of the above-mentioned optional technical solutions can be combined in any way to form optional embodiments of this application, and will not be described in detail here.

[0117] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0118] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0119] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0120] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0121] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0122] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0123] It should be noted that in the description of this application, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0124] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications or equivalent substitutions made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A control method for a vehicle motor, characterized in that, The method includes: Determine the current operating status of the vehicle-mounted audio receiver; When the in-vehicle audio receiving device is in a first operating state, the vehicle motor is driven to operate through a first drive mode. The first operating state is when the vehicle audio receiving device is in the state of outputting wireless broadcast audio, and the first driving mode is to drive the vehicle motor by continuously outputting driving signals.

2. The vehicle motor control method according to claim 1, characterized in that, The method further includes: When the vehicle audio receiving device is in a second operating state, the vehicle motor is driven to work through a second driving mode. The second operating state is when the vehicle audio receiving device is not outputting wireless broadcast audio, and the second driving mode is to drive the vehicle motor through a driving method that outputs driving signals discontinuously.

3. The vehicle motor control method according to claim 2, characterized in that, The discontinuous output drive signal is a pulse width modulation signal.

4. The vehicle motor control method according to claim 3, characterized in that, The first driving mode uses a pulse width modulation signal with a duty cycle of 100% as the driving signal, while the second driving mode uses a pulse width modulation signal with a duty cycle of less than 100% as the driving signal.

5. The vehicle motor control method according to claim 1, characterized in that, Determining the operating status of the vehicle-mounted audio receiving device includes: The first status indication information and / or the second status indication information of the vehicle audio receiving device are detected in real time, wherein the first status indication information is used to characterize the on / off state of the vehicle audio receiving device, and the second status indication information is used to characterize the mute state of the vehicle audio receiving device. The operating status of the vehicle-mounted audio receiving device is determined based on at least one of the first status indication information and the second status indication information.

6. The vehicle motor control method according to claim 5, characterized in that, Determining the operating status of the vehicle-mounted audio receiving device based on at least one of the first status indication information and the second status indication information includes: When the first status indication information indicates that the vehicle audio receiving device is in a turned-off state or the second status indication information indicates that the vehicle audio receiving device is in a muted state, the vehicle audio receiving device is determined to be in the second operating state. When the first status indication information indicates that the vehicle audio receiving device is in the on state and the second status indication information indicates that the vehicle audio receiving device is in the non-mute state, it is determined that the vehicle audio receiving device is in the first operating state.

7. The vehicle motor control method according to claim 1, characterized in that, The step of driving the vehicle motor through the first drive mode includes: In response to receiving the start operation command of the vehicle motor, a control command for the vehicle motor is generated; In response to the control command, the vehicle motor is driven to operate through the first drive mode.

8. A control device for a vehicle motor, characterized in that, The device includes: The status determination module is used to determine the current operating status of the vehicle-mounted audio receiving device; The motor drive module is used to drive the vehicle motor to operate in a first drive mode when the in-vehicle audio receiving device is in a first operating state. The first operating state is when the vehicle audio receiving device is in the state of outputting wireless broadcast audio, and the first driving mode is to drive the vehicle motor by continuously outputting driving signals.

9. A computer-readable storage medium, characterized in that, The storage medium stores a computer program for executing the vehicle motor control method according to any one of claims 1 to 7.

10. A vehicle, characterized in that, The vehicles include: processor; Memory used to store the processor's executable instructions. The processor is used to execute the vehicle motor control method according to any one of claims 1 to 7.

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