Self-adaptive updating method and device for hand release alarm function, vehicle and program product

Abstract

The invention relates to a self-adaptive updating method and device for a hand release alarm function, a vehicle and a program product, and the method comprises the steps: recognizing the face information of a current driver, and if the vehicle does not output the ID information of the current driver based on the face information, executing the step 1; if yes, acquiring a torque value of a current driver output by a steering wheel of the vehicle when the vehicle meets a preset data acquisition condition; determining a new hand release alarm threshold value and a new takeover threshold value based on the torque value, and taking the new hand release alarm threshold value and the new takeover prompt threshold value as hand release alarm configuration parameters corresponding to the current driver; and after the vehicle is powered on again and the auxiliary driving function is started, if the ID information of the current driver is detected, performing hand release alarm according to the hand release alarm configuration parameters corresponding to the current driver. Therefore, the problems of high false alarm and missing alarm rate and the like when the vehicle completes calibration and fixation of the alarm threshold value before leaving the factory are solved, and the driving experience of a user is improved.

Description

Technical Field

[0001] The present application relates to the field of intelligent automobile technology, and in particular to an adaptive updating method, device, vehicle and program product of a hands-off warning function. Background Art

[0002] Currently, mainstream smart cars in the industry are equipped with lateral assisted driving functions such as LCC (lane centering assist system) and LSS (lane keeping assist system). These functions do not support the driver to take their hands off the steering wheel for a long time.

[0003] For safety and regulatory requirements, the LCC and LSS functional systems are designed with a hands-off alarm function. After the driver's hands are off the steering wheel for a certain period of time, the system will remind the driver to take over the vehicle through sound and vision. If the driver still does not take over the vehicle, the system will automatically exit the vehicle's lateral control. If the driver resumes taking over the steering wheel control during this period, the system will stop the hands-off alarm prompt.

[0004] This type of assisted driving function is usually designed with a torque sensor steering wheel solution to monitor the hand torque applied by the driver on the steering wheel to perform hands-off detection and judgment. When the torque value is less than a certain value (aNm) for a certain time (t1), it is determined that the driver has lost control of the steering wheel. When the torque value is greater than a certain value (bNm) for a certain time (t2), it is determined that the driver has resumed control of the steering wheel.

[0005] Most common solutions in the industry are to calibrate fixed alarm thresholds (a, b, t1, t2) before the vehicle leaves the factory. This threshold is solidified after a large number of real vehicle debugging during the previous function development period. The parameter threshold is no longer changed after the vehicle leaves the factory. Although the system complexity and development cost are low, it still has the following disadvantages:

[0006] (1) Each vehicle model must be calibrated on a real vehicle, and the functional software development cycle is long;

[0007] (2) The hands-off alarm threshold (a, t1) and takeover recovery threshold (b, t2) used are fixed values ​​and must be solidified before the vehicle leaves the factory. They cannot be changed after the vehicle leaves the factory.

[0008] (3) The same car model cannot be differentiated to adapt to all car owners, which can easily lead to erroneous hands-off alarms or driver-override alarms, affecting the functional experience and causing dissatisfaction or complaints from car owners.

[0009] (4) For example, when an experienced driver applies very little force to the steering wheel during normal driving, the system may mistakenly issue a "driver taking over the vehicle" alarm reminder during normal driving;

[0010] (5) In the scenario where the system issues a hands-off alarm, due to individual differences, some people are accustomed to using less force, resulting in the "driver taking over the vehicle" alarm continuing to sound after taking over the vehicle, and the recovery function is slow. Summary of the invention

[0011] The present application provides an adaptive updating method, device, vehicle and program product for a hands-off alarm function, so as to solve the problems such as high false alarm and missed alarm rate of hands-off alarm reminder according to the alarm threshold fixed by calibration completed before the vehicle leaves the factory.

[0012] The first aspect of the present application provides an adaptive update method for a hands-off alarm function, comprising the following steps: identifying facial information of a current driver, and if the vehicle does not output the ID information of the current driver based on the facial information, collecting the torque value of the current driver output by the steering wheel of the vehicle when the vehicle meets preset data collection conditions; calculating the torque average value based on the torque value as a new hands-off alarm threshold, and determining a new takeover prompt threshold based on the hands-off alarm threshold, and using the new hands-off alarm threshold and the new takeover prompt threshold as hands-off alarm configuration parameters corresponding to the current driver; after the vehicle is powered on again and the assisted driving function is turned on, if the ID information of the current driver is detected, performing a hands-off alarm according to the hands-off alarm configuration parameters corresponding to the current driver.

[0013] Through the above technical solution, by providing each driver with personalized hands-off alarm configuration parameters and dynamically adjusting the alarm threshold according to the driver's actual driving conditions, driving safety and comfort are significantly improved, providing the driver with a more intelligent and convenient driving experience.

[0014] Optionally, the hands-off alarm is performed according to the hands-off alarm configuration parameters corresponding to the current driver, including: monitoring the current torque of the steering wheel according to the new hands-off alarm threshold and the new takeover prompt threshold; if the current torque is less than or equal to the new hands-off alarm threshold, a hands-off alarm reminder is performed, and when the current torque is greater than the new takeover prompt threshold, a takeover prompt is performed.

[0015] Through the above technical solution, timely alarm takeover reminders are used to improve driving safety and comfort, reduce false alarms and excessive reminders, and enhance the driver's trust and dependence.

[0016] Optionally, the above-mentioned adaptive update method of the hands-off alarm function also includes: obtaining facial information of a new driver; if the ID information of the new driver is output based on the facial information, calling the hands-off alarm configuration parameters corresponding to the new driver according to the ID information to perform a hands-off alarm; if the ID information of the new driver is not output based on the facial information, storing the facial information of the new driver, and determining the hands-off alarm threshold and takeover prompt threshold of the new driver when driving, and using the hands-off alarm threshold and takeover prompt threshold of the new driver when driving as the latest set of hands-off alarm configuration parameters.

[0017] Through the above technical solution, a more intelligent and convenient driving assistance experience is provided to the driver through the rapid identification of new drivers.

[0018] Optionally, after taking the new driver's hands-off alarm threshold and takeover prompt threshold while driving as the latest set of hands-off alarm configuration parameters, it includes: judging whether the number of groups of the hands-off alarm configuration parameters is greater than the preset number of groups; if the number of groups of the hands-off alarm configuration parameters is greater than the preset number of groups, then cyclically overwriting the first set of hands-off alarm configuration parameters with the latest set of hands-off alarm configuration parameters.

[0019] Through the above technical solution, by introducing a circular overwriting strategy, the storage space is optimized, the timeliness of the data is maintained, the data management is simplified, and the user experience is enhanced.

[0020] Optionally, the above-mentioned adaptive updating method of the hands-off warning function further includes: automatically updating the driver's hands-off warning configuration parameters according to a preset time period.

[0021] Through the above technical solution, the driver's hands-off alarm configuration parameters are automatically updated through a preset time period, which can maintain the timeliness of the configuration, adapt to changes in driving habits, improve driving safety, reduce manual intervention, and enhance the intelligence level of the system.

[0022] The second aspect of the present application provides an adaptive update method for a hands-off alarm function, comprising: an acquisition module, for identifying facial information of a current driver, and if the vehicle does not output the ID information of the current driver based on the facial information, then acquiring the torque value of the current driver output by the steering wheel of the vehicle when the vehicle meets preset data acquisition conditions; a first update module, for calculating a torque average value based on the torque value as a new hands-off alarm threshold, and determining a new takeover prompt threshold based on the hands-off alarm threshold, and using the new hands-off alarm threshold and the new takeover prompt threshold as hands-off alarm configuration parameters corresponding to the current driver; an alarm module, for performing a hands-off alarm according to the hands-off alarm configuration parameters corresponding to the current driver if the ID information of the current driver is detected after the vehicle is powered on again and the assisted driving function is turned on.

[0023] Optionally, the alarm module is also used to: monitor the current torque of the steering wheel according to the new hands-off alarm threshold and the new takeover prompt threshold; if the current torque is less than or equal to the new hands-off alarm threshold, issue a hands-off alarm reminder, and when the current torque is greater than the new takeover prompt threshold, issue a takeover prompt.

[0024] Optionally, the adaptive update device of the above-mentioned hands-off alarm function also includes: an identification module, used to identify the facial information of a new driver; a calling module, used to call the hands-off alarm configuration parameters corresponding to the new driver according to the ID information to perform a hands-off alarm if the ID information of the new driver is output based on the facial information; a second update module, used to store the facial information of the new driver if the ID information of the new driver is not output based on the facial information, and determine the hands-off alarm threshold and takeover prompt threshold of the new driver when driving, and use the hands-off alarm threshold and takeover prompt threshold of the new driver when driving as the latest set of hands-off alarm configuration parameters.

[0025] Optionally, after taking the new driver's hands-off alarm threshold and takeover prompt threshold while driving as the latest set of hands-off alarm configuration parameters, the first update module is also used to: determine whether the number of groups of the hands-off alarm configuration parameters is greater than the preset number of groups; if the number of groups of the hands-off alarm configuration parameters is greater than the preset number of groups, then cyclically overwrite the first set of hands-off alarm configuration parameters with the latest set of hands-off alarm configuration parameters.

[0026] Optionally, the above-mentioned adaptive updating device for the hands-off warning function further includes: a third updating module, which is used to automatically update the driver's hands-off warning configuration parameters according to a preset time period.

[0027] A third aspect of the present application provides a vehicle, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the adaptive update method of the hands-off warning function as described in the above embodiment.

[0028] A fourth aspect of the present application provides a computer program product on which a computer program is stored. The program is executed by a processor to implement the adaptive update method of the hands-off warning function as described in the above embodiment.

[0029] In the above implementation, the facial information of the current driver is identified. If the vehicle does not output the ID information of the current driver based on the facial information, the torque value of the current driver output by the steering wheel of the vehicle is collected when the vehicle meets the preset data collection conditions. The torque average is calculated based on the torque value as a new hands-off alarm threshold, and a new takeover prompt threshold is determined based on the hands-off alarm threshold. The new hands-off alarm threshold and the new takeover prompt threshold are used as the hands-off alarm configuration parameters corresponding to the current driver. After the vehicle is powered on again and the assisted driving function is turned on, if the ID information of the current driver is detected, a hands-off alarm is performed according to the hands-off alarm configuration parameters corresponding to the current driver. In this way, the problem of high false alarm and missed alarm rates of hands-off alarm reminders based on the alarm threshold calibrated and fixed before the vehicle leaves the factory is solved, and the software development workload and cycle of lateral control assisted driving functions are greatly reduced. The same model / the same vehicle can adapt to the driving force habits of different drivers, the function is used accurately, false alarms and missed alarms are reduced, and the user experience is improved.

[0030] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0032] Figure 1 It is a flow chart of an adaptive updating method of a hands-off warning function provided according to an embodiment of the present application;

[0033] Figure 2 A system block diagram without driver ID recognition according to one embodiment of the present application;

[0034] Figure 3 A block diagram of a system with driver ID recognition according to an embodiment of the present application;

[0035] Figure 4 is a schematic diagram of the association between a driver and configuration parameters according to an embodiment of the present application;

[0036] Figure 5 This is an example diagram of an adaptive updating device for a hands-free warning function according to an embodiment of the present application;

[0037] Figure 6 It is a schematic diagram of a vehicle structure according to an embodiment of the present application. DETAILED DESCRIPTION

[0038] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0039] The following describes the adaptive updating method, device, vehicle and program product of the hands-off alarm function of the embodiment of the present application with reference to the accompanying drawings. In view of the problem mentioned in the above background technology that the false alarm rate of the hands-off alarm reminder is high according to the alarm threshold calibrated and fixed before the vehicle leaves the factory, the present application provides an adaptive updating method of the hands-off alarm function, in which the facial information of the current driver is identified. If the vehicle does not output the ID information of the current driver based on the facial information, the torque value of the current driver output by the steering wheel of the vehicle is collected when the vehicle meets the preset data collection conditions, the torque average value is calculated based on the torque value as a new hands-off alarm threshold, and a new takeover prompt threshold is determined based on the hands-off alarm threshold, and the new hands-off alarm threshold and the new takeover prompt threshold are used as the hands-off alarm configuration parameters corresponding to the current driver. After the vehicle is powered on again and the auxiliary driving function is turned on, if the ID information of the current driver is detected, the hands-off alarm is performed according to the hands-off alarm configuration parameters corresponding to the current driver. As a result, the problem of high false alarm and missed alarm rates of hands-off alarm reminders based on the fixed alarm threshold calibrated before the vehicle leaves the factory is solved, and the software development workload and cycle of lateral control-type assisted driving functions are greatly reduced. The same model / the same car can adapt to the driving habits of different drivers, the functions are used accurately, false alarms and missed alarms are reduced, and the user experience is improved.

[0040] Specifically, Figure 1 A flowchart of an adaptive updating method for a hands-free alarm function provided in an embodiment of the present application.

[0041] like Figure 1 As shown, the adaptive updating method of the hands-off warning function includes the following steps:

[0042] It should be noted that the prerequisite for the adaptive update method of the vehicle's hands-off warning function is:

[0043] (1) The vehicle is equipped with a forward-looking intelligent camera and LCC / LSS assisted driving system function;

[0044] (2) The vehicle is equipped with a computer, which can input the flag information of the vehicle's first activation login;

[0045] (3) The vehicle is equipped with a navigation system that can output road status information and distinguish between highways, expressways, and other roads (tentatively classified into three categories);

[0046] (4) The vehicle is equipped with a car navigation system, which can output road speed limit information, such as 60 / 80;

[0047] (5) The intelligent camera perception module can identify and output road conditions, distinguishing between asphalt pavement, concrete pavement, and other roads (tentatively three categories);

[0048] (6) The intelligent camera perception module can identify and output road speed limit information, such as 60 / 80;

[0049] (7) Optional: The vehicle is equipped with a DMS system, which can recognize and memorize the driver's face and output different IDs based on different faces.

[0050] In step S101, the facial information of the current driver is identified. If the vehicle does not output the ID information of the current driver based on the facial information, the torque value of the current driver output by the steering wheel of the vehicle is collected when the vehicle meets the preset data collection conditions.

[0051] In step S102, the torque average value is calculated based on the torque value as a new hands-off alarm threshold, and a new takeover prompt threshold is determined based on the hands-off alarm threshold, and the new hands-off alarm threshold and the new takeover prompt threshold are used as hands-off alarm configuration parameters corresponding to the current driver.

[0052] In step S103, after the vehicle is powered on again and the assisted driving function is turned on, if the ID information of the current driver is detected, a hands-off alarm is performed according to the hands-off alarm configuration parameters corresponding to the current driver.

[0053] Optionally, in some embodiments, a hands-off alarm is performed according to the hands-off alarm configuration parameters corresponding to the current driver, including: monitoring the current torque of the steering wheel according to a new hands-off alarm threshold and a new takeover prompt threshold; if the current torque is less than or equal to the new hands-off alarm threshold, a hands-off alarm reminder is performed, and when the current torque is greater than the new takeover prompt threshold, a takeover prompt is performed.

[0054] Specifically, when the precondition (7) is met, that is, the vehicle is equipped with a DMS system, the DMS system can recognize and memorize the driver's face and output different IDs based on different faces, such as Figure 2 As shown, the intelligent camera of the vehicle recognizes the facial information of the current driver. If the vehicle does not output the ID information of the current driver based on the facial information, the torque value of the current driver output by the steering wheel of the vehicle is collected when the vehicle meets the preset data collection conditions, wherein the preset data collection conditions include:

[0055] (1) The vehicle senses and recognizes that the vehicle is on an asphalt road or concrete road, or the road indicated by the vehicle navigation system is a highway or expressway.

[0056] (2) The vehicle senses and recognizes a speed limit sign of 60 or above on the road, or receives speed limit information output by the vehicle navigation system that the road speed limit is 60 or above;

[0057] (3) The yaw rate of the monitored vehicle is less than the preset yaw rate threshold (the vehicle is traveling in a straight line): YawRate<0.08deg / Sec (the preset yaw rate threshold can be calibrated);

[0058] (4) The EPS steering angle rate of the monitored vehicle is less than the preset rate threshold (EPS steering angle is in a steady state): EPS_StrngAgSpd<1deg / Sec (the preset rate threshold can be calibrated);

[0059] (5) The EPS steering angle of the monitored vehicle is less than the preset steering angle threshold: EPS_3_StrngWhlAg<10deg (the preset steering angle threshold can be calibrated)

[0060] (6) The torque value of the steering wheel output within 5 seconds is collected in multiple speed measurement sections, including 50-60 km / h, 70-80 km / h, and 90-100 km / h (developers in this field can adjust multiple speed measurement sections), 2 groups for each section, a total of 6 data, the absolute value of vehicle acceleration / deceleration is ≤1.5 m / s (adjustable), the radius of curvature of the perceived input lane line is >2000 m (adjustable), if a certain data period does not meet the requirements, then this data is re-timed and collected, as shown in Table 1.

[0061] Table 1

[0062] Group / vehicle speed km / h 50~60km / h 70~80km / h 90~100km / h 1 2

[0063] Furthermore, the system filters the collected 6 segments of data, calculates the torque average after removing the burrs, and obtains the average value as the new hands-off alarm threshold a. The new hands-off alarm threshold a+0.1 (adjustable) is used to obtain the new takeover prompt threshold b. The new hands-off alarm threshold a and the new takeover prompt threshold b are used as the hands-off alarm configuration parameters corresponding to the current driver.

[0064] When the system is powered on, the new hands-off alarm threshold a and the new takeover prompt threshold b are used as the hands-off alarm configuration parameters corresponding to the current driver, and are written into the corresponding location of the external calibration file for storage as defined. The entire process is completed in the system background and is not noticeable to the user.

[0065] After the smart camera is powered off and then powered on again, the system will collect the driver's habitual needs based on the memory of the last trigger. If the current driver's ID information can be obtained based on the recognized driver's facial information, the system will read the corresponding hands-off alarm threshold and takeover prompt threshold of the current driver in the calibration file outside the main software, and perform hands-off alarm and takeover prompt. Specifically,

[0066] When the user turns on an assisted driving function, such as LCC or LSS, after the assisted driving function is activated, the vehicle monitors the steering wheel torque based on the new hands-off alarm threshold a to determine whether the driver has lost lateral control. If the current torque is less than or equal to the new hands-off alarm threshold, it is determined that the driver has lost lateral control and a hands-off alarm reminder is issued. When the current torque is greater than the new takeover prompt threshold, it is determined that the driver has taken over and a takeover prompt is issued.

[0067] Thereafter, during the use of the vehicle, the system repeatedly triggers the configuration parameter update strategy, and continuously and adaptively updates the hands-off alarm configuration parameters.

[0068] If precondition (7) is not met, that is, the vehicle is not equipped with a DMS system, e.g. Figure 3 As shown, the vehicle reads the first set of configuration parameters a1 and b1 in the external calibration file by default for hands-off alarm, and subsequent updates of hands-off alarm thresholds and takeover prompt thresholds are all performed on the first set of hands-off alarm configuration parameters a1 and b1.

[0069] Optionally, in some embodiments, the adaptive update method of the above-mentioned hands-off alarm function also includes: obtaining facial information of a new driver; if the ID information of the new driver is output based on the facial information, calling the hands-off alarm configuration parameters corresponding to the new driver according to the ID information to perform a hands-off alarm; if the ID information of the new driver is not output based on the facial information, storing the facial information of the new driver, and determining the hands-off alarm threshold and takeover prompt threshold of the new driver when driving, and using the hands-off alarm threshold and takeover prompt threshold of the new driver when driving as the latest set of hands-off alarm configuration parameters.

[0070] It can be understood that when the vehicle is powered on again, the facial information of the new driver is identified through the vehicle's intelligent camera. If the vehicle's DMS system can output the new driver's ID information based on the new driver's facial information, the vehicle will call the new driver's corresponding hands-off alarm configuration parameters according to the new driver's ID information to perform a hands-off alarm. If the new driver's ID information is not output in the vehicle's DMS system, the new driver's ID information will be stored in the DMS system, and when the new driver is driving the vehicle, the new driver's hands-off alarm threshold and takeover prompt threshold while driving will be collected when the preset collection conditions are met, and the new driver's hands-off alarm threshold and takeover prompt threshold while driving will be associated with the new driver's ID information, and the hands-off alarm threshold and takeover prompt threshold will be written to the corresponding position of the external calibration file for storage as the latest set of hands-off alarm configuration parameters.

[0071] Further, in some embodiments, after the new driver's hands-off warning threshold and takeover prompt threshold when driving are used as the latest set of hands-off warning configuration parameters, it includes: determining whether the number of groups of hands-off warning configuration parameters is greater than the preset number of groups; if the number of groups of hands-off warning configuration parameters is greater than the preset number of groups, then cyclically overwriting the first set of hands-off warning configuration parameters with the latest set of hands-off warning configuration parameters.

[0072] It should be noted that during the development of the vehicle's assisted driving system, Figure 4 The architecture block diagram shown implements the modular design of the hands-off alarm function of the LCC / LSS system. The main software reserves configuration interfaces for the hands-off alarm threshold a and the takeover alarm threshold b. The calibration file (for example, in json format) is configured separately in an independent path outside the main software. The configuration interfaces of a and b are correspondingly associated in the calibration file. When developing the function, an initial value (for example, 0.2Nm, 0.25Nm) can be preset based on the characteristic parameters of EPS as the default values ​​of the hands-off alarm threshold a and the takeover alarm threshold b in the main software, respectively, to ensure that the hands-off alarm function can be used normally. Among them, the hands-off alarm threshold a and the takeover alarm threshold b reserved by the main software can permanently store three groups of hands-off alarm configuration parameters, namely a1-b1, a2-b2, and a3-b3. The three groups of hands-off alarm configuration parameters can be automatically associated and bound with the driver ID information output by the DMS.

[0073] Specifically, after the new driver's hands-off warning threshold and takeover prompt threshold while driving are used as the latest set of hands-off warning configuration parameters, if the number of groups of hands-off warning configuration parameters stored in the system is greater than the preset number of groups, the latest set of hands-off warning configuration parameters will be cyclically overwritten with the first set of hands-off warning configuration parameters.

[0074] For example, after the first driving user activates and logs in to the vehicle, the association and binding of the driver's ID information and the hands-off alarm threshold parameters are triggered. The vehicle configuration DMS system stores the facial information of the first driving user as ID1, and the vehicle saves the first set of hands-off alarm configuration parameters a1 and b1 associated with the first driving user ID1; if the second driver subsequently uses the vehicle, the vehicle stores the second driver's ID2 and associates the second set of hands-off alarm configuration parameters a2 and b2 corresponding to ID2, and so on, up to 3 sets of hands-off alarm configuration parameters are associated, and then a cyclic coverage is performed, that is, the information of ID4 and the associated hands-off alarm configuration parameters cover the information of ID1 and the associated hands-off alarm configuration parameters a1 and b1.

[0075] Optionally, in some embodiments, the above-mentioned adaptive updating method of the hands-off warning function further includes: automatically updating the driver's hands-off warning configuration parameters according to a preset time period.

[0076] When a user uses the vehicle for the first time, activates and logs in to the vehicle computer, the vehicle receives the driver's ID information, and triggers the driver's habitual collection strategy. Except for the first collection, the collection trigger strategy in other situations of vehicle use is as follows:

[0077] When precondition (7) is met, the vehicle automatically triggers the driver habit collection strategy based on the new driver ID information output by the DMS system. Thereafter, if the driver ID is the same, the system automatically triggers the driver habit collection strategy according to a preset time period (12 months or 24 months) to update the driver's hands-off alarm configuration parameters.

[0078] When precondition (7) is not met, the vehicle automatically triggers the driver's habit collection strategy according to a preset time period (12 months or 24 months) and updates the first set of hands-off alarm configuration parameters in the external calibration file.

[0079] According to the adaptive update method of the hands-off alarm function proposed in the embodiment of the present application, the facial information of the current driver is identified. If the vehicle does not output the ID information of the current driver based on the facial information, the torque value of the current driver output by the steering wheel of the vehicle is collected under the premise that the vehicle meets the preset data collection conditions, and the torque average value is calculated based on the torque value as a new hands-off alarm threshold, and a new takeover prompt threshold is determined based on the hands-off alarm threshold. The new hands-off alarm threshold and the new takeover prompt threshold are used as the hands-off alarm configuration parameters corresponding to the current driver. After the vehicle is powered on again and the assisted driving function is turned on, if the ID information of the current driver is detected, a hands-off alarm is performed according to the hands-off alarm configuration parameters corresponding to the current driver. As a result, the problem of high false alarm and missed alarm rates of hands-off alarm reminders based on the fixed alarm threshold calibrated before the vehicle leaves the factory is solved. By omitting the calibration and debugging link of the hands-off alarm function threshold during the platform model development process, the software development workload and cycle of lateral control auxiliary driving functions are greatly reduced. The function parameters can be continuously updated during the life cycle of the car. The same model / the same car can adapt to the driving habits of different drivers. The function is used accurately, false alarms and missed alarms are reduced, the experience is better, and customer complaints and customer complaints are effectively reduced. The torque error of the vehicle steering wheel torque sensor after long-term use can be compensated by updating, the false alarms caused by vehicle wear and tear can be reduced, and the user experience is improved.

[0080] Next, the adaptive updating device for the hands-off warning function proposed in the embodiment of the present application is described with reference to the accompanying drawings.

[0081] Figure 5 4 is a block diagram of an adaptive updating device for the hands-free alarm function according to an embodiment of the present application.

[0082] like Figure 5 As shown, the adaptive updating device 10 of the hands-off alarm function includes: a collection module 100 , a first updating module 200 and an alarm module 300 .

[0083] Among them, the acquisition module 100 is used to identify the facial information of the current driver. If the vehicle does not output the ID information of the current driver based on the facial information, the torque value of the current driver output by the steering wheel of the vehicle is collected when the vehicle meets the preset data acquisition conditions; the first update module 200 is used to calculate the torque average value based on the torque value as a new hands-off alarm threshold, and determine a new takeover prompt threshold based on the hands-off alarm threshold, and use the new hands-off alarm threshold and the new takeover prompt threshold as the hands-off alarm configuration parameters corresponding to the current driver; the alarm module 300 is used to perform a hands-off alarm according to the hands-off alarm configuration parameters corresponding to the current driver if the ID information of the current driver is detected after the vehicle is powered on again and the assisted driving function is turned on.

[0084] Optionally, in some embodiments, the alarm module 300 is also used to: monitor the current torque of the steering wheel according to a new hands-off alarm threshold and a new takeover prompt threshold; if the current torque is less than or equal to the new hands-off alarm threshold, a hands-off alarm reminder is issued, and when the current torque is greater than the new takeover prompt threshold, a takeover prompt is issued.

[0085] Optionally, in some embodiments, the adaptive update device 10 of the hands-off alarm function mentioned above also includes: a recognition module, used to recognize the facial information of a new driver; a calling module, used to call the hands-off alarm configuration parameters corresponding to the new driver according to the ID information to perform a hands-off alarm if the new driver's ID information is output based on the facial information; a second update module, used to store the new driver's facial information if the new driver's ID information is not output based on the facial information, and determine the hands-off alarm threshold and takeover prompt threshold of the new driver when driving, and use the hands-off alarm threshold and takeover prompt threshold of the new driver when driving as the latest set of hands-off alarm configuration parameters.

[0086] Optionally, in some embodiments, after the new driver's hands-off warning threshold and takeover prompt threshold when driving are used as the latest set of hands-off warning configuration parameters, the first update module 200 is also used to: determine whether the number of groups of hands-off warning configuration parameters is greater than the preset number of groups; if the number of groups of hands-off warning configuration parameters is greater than the preset number of groups, then the latest set of hands-off warning configuration parameters will be cyclically overwritten with the first set of hands-off warning configuration parameters.

[0087] Optionally, in some embodiments, the above-mentioned adaptive updating device 10 for the hands-off warning function further includes: a third updating module, which is used to automatically update the driver's hands-off warning configuration parameters according to a preset time period.

[0088] It should be noted that the above explanation of the embodiment of the adaptive updating method of the hands-off alarm function is also applicable to the adaptive updating device of the hands-off alarm function of this embodiment, and will not be repeated here.

[0089] According to the adaptive update device of the hands-off alarm function proposed in the embodiment of the present application, the facial information of the current driver is identified. If the vehicle does not output the ID information of the current driver based on the facial information, the torque value of the current driver output by the steering wheel of the vehicle is collected under the premise that the vehicle meets the preset data collection conditions, and the torque average value is calculated based on the torque value as a new hands-off alarm threshold, and a new takeover prompt threshold is determined based on the hands-off alarm threshold. The new hands-off alarm threshold and the new takeover prompt threshold are used as the hands-off alarm configuration parameters corresponding to the current driver. After the vehicle is powered on again and the assisted driving function is turned on, if the ID information of the current driver is detected, a hands-off alarm is performed according to the hands-off alarm configuration parameters corresponding to the current driver. As a result, the problem of high false alarm and missed alarm rates of hands-off alarm reminders based on the fixed alarm threshold calibrated before the vehicle leaves the factory is solved. By omitting the calibration and debugging link of the hands-off alarm function threshold during the platform model development process, the software development workload and cycle of lateral control auxiliary driving functions are greatly reduced. The function parameters can be continuously updated during the life cycle of the car. The same model / the same car can adapt to the driving habits of different drivers. The function is used accurately, false alarms and missed alarms are reduced, the experience is better, and customer complaints and customer complaints are effectively reduced. The torque error of the vehicle steering wheel torque sensor after long-term use can be compensated by updating, the false alarms caused by vehicle wear and tear can be reduced, and the user experience is improved.

[0090] Figure 6 A schematic diagram of the structure of a vehicle provided in an embodiment of the present application. The vehicle may include:

[0091] A memory 601 , a processor 602 , and a computer program stored in the memory 601 and executable on the processor 602 .

[0092] When the processor 602 executes the program, the adaptive updating method of the hands-off warning function provided in the above embodiment is implemented.

[0093] Furthermore, the vehicle also includes:

[0094] The communication interface 603 is used for communication between the memory 601 and the processor 602 .

[0095] The memory 601 is used to store computer programs that can be executed on the processor 602 .

[0096] The memory 601 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0097] If the memory 601, the processor 602 and the communication interface 603 are implemented independently, the communication interface 603, the memory 601 and the processor 602 can be connected to each other through a bus and communicate with each other. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0098] Optionally, in a specific implementation, if the memory 601, the processor 602 and the communication interface 603 are integrated on a chip, the memory 601, the processor 602 and the communication interface 603 can communicate with each other through an internal interface.

[0099] The processor 602 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0100] An embodiment of the present application also provides a computer program product, on which a computer program is stored, and when the program is executed by a processor, the adaptive update method of the hands-off alarm function as described above is implemented.

[0101] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0102] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0103] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0104] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer program product for use with an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, a "computer program product" can be any device that can contain, store, communicate, propagate or transmit a program for use with an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer program products (a non-exhaustive list) include the following: an electrical connection with one or N wirings (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). Furthermore, the computer program product may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example by optically scanning the paper or other medium and then editing, interpreting or, if necessary, processing in another suitable manner, and then storing it in a computer memory.

[0105] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0106] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer program product, which, when executed, includes one or a combination of the steps of the method embodiment.

[0107] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer program product.

[0108] The computer program product mentioned above may be a read-only memory, a disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An adaptive updating method for a hands-off alarm function, characterized in that: The following steps are involved: Identify the facial information of the current driver, and if the vehicle does not output the ID information of the current driver based on the facial information, collect the torque value of the current driver output by the steering wheel of the vehicle when the vehicle meets a preset data collection condition; Calculating a torque average value based on the torque value as a new hands-off warning threshold, determining a new takeover prompt threshold based on the hands-off warning threshold, and using the new hands-off warning threshold and the new takeover prompt threshold as hands-off warning configuration parameters corresponding to the current driver; After the vehicle is powered on again and the assisted driving function is turned on, if the ID information of the current driver is detected, a hands-off alarm is performed according to the hands-off alarm configuration parameters corresponding to the current driver.

2. The method according to claim 1, characterized in that The performing a hands-off alarm according to the hands-off alarm configuration parameters corresponding to the current driver includes: monitoring the current torque of the steering wheel according to the new hands-off warning threshold and the new takeover prompt threshold; If the current torque is less than or equal to the new hands-off alarm threshold, a hands-off alarm reminder is issued, and when the current torque is greater than the new takeover prompt threshold, a takeover prompt is issued.

3. The method according to claim 1, characterized in that Also includes: Obtaining facial information of new drivers; If the ID information of the new driver is output based on the face information, calling the hands-off alarm configuration parameters corresponding to the new driver according to the ID information to perform a hands-off alarm; If the ID information of the new driver is not output based on the facial information, the facial information of the new driver is stored, and the hands-off alarm threshold and takeover prompt threshold of the new driver when driving are determined, and the hands-off alarm threshold and takeover prompt threshold of the new driver when driving are used as the latest set of hands-off alarm configuration parameters.

4. The method according to claim 3, characterized in that After the new driver's hands-off warning threshold and takeover prompt threshold are used as the latest set of hands-off warning configuration parameters, the method includes: Determining whether the number of groups of the hands-off alarm configuration parameters is greater than a preset number of groups; If the number of groups of the hands-off alarm configuration parameters is greater than the preset number of groups, the latest group of hands-off alarm configuration parameters will cyclically cover the first group of hands-off alarm configuration parameters.

5. The method according to claim 4, characterized in that Also includes: Automatically updates the driver's hands-off warning configuration parameters according to the preset time period.

6. An adaptive updating device for hands-off alarm function, characterized in that: include: A collection module, used for identifying the facial information of the current driver, and if the vehicle does not output the ID information of the current driver based on the facial information, collecting the torque value of the current driver output by the steering wheel of the vehicle when the vehicle meets a preset data collection condition; a first updating module, configured to calculate a torque average value based on the torque value as a new hands-off warning threshold, determine a new takeover prompt threshold based on the hands-off warning threshold, and use the new hands-off warning threshold and the new takeover prompt threshold as hands-off warning configuration parameters corresponding to the current driver; The alarm module is used to issue a hands-off alarm according to the hands-off alarm configuration parameters corresponding to the current driver if the ID information of the current driver is detected after the vehicle is powered on again and the assisted driving function is turned on.

7. The device according to claim 6, characterized in that The alarm module is also used for: monitoring the current torque of the steering wheel according to the new hands-off warning threshold and the new takeover prompt threshold; If the current torque is less than or equal to the new hands-off alarm threshold, a hands-off alarm reminder is issued, and when the current torque is greater than the new takeover prompt threshold, a takeover prompt is issued.

8. The device according to claim 6, characterized in that Also includes: A recognition module, used to recognize the facial information of a new driver; A calling module, configured to call the hands-off alarm configuration parameters corresponding to the new driver according to the ID information to perform a hands-off alarm if the ID information of the new driver is output based on the face information; The second update module is used to store the facial information of the new driver, and determine the hands-off alarm threshold and takeover prompt threshold of the new driver when driving if the ID information of the new driver is not output based on the facial information, and use the hands-off alarm threshold and takeover prompt threshold of the new driver when driving as the latest set of hands-off alarm configuration parameters.

9. A vehicle, characterized in that: Including memory and processor; The processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to implement the adaptive update method of the hands-off warning function as described in any one of claims 1-5.

10. A computer program product, wherein the computer program product stores a computer program, characterized in that: When the program is executed by a processor, the adaptive updating method of the hands-off warning function as described in any one of claims 1 to 5 is implemented.

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