Seat headrest adjusting method and device of vehicle seat and vehicle

Abstract

The invention provides a seat headrest adjusting method and device of a vehicle seat and a vehicle, the method is applied to the field of vehicle control, and the method comprises the steps that under the condition that it is detected that a riding object exists on the vehicle seat, the object head position of the riding object when the riding object sits on the vehicle seat is obtained, the object head position refers to the distance between the upper surface of the vehicle seat and the head of the riding object; under the condition that it is detected that the seat backrest of the vehicle seat is not located at the initial angle position, the inclination angle of the seat backrest relative to the initial angle position is obtained; based on the inclination angle and the head position of the object, the seat headrest is controlled to be adjusted to the target headrest height, the target headrest height and the inclination angle of the backrest are in negative correlation, and the target headrest height and the head position of the object are in positive correlation. According to the method, the use safety of the seat headrest on the vehicle in the driving process can be improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle control, and more specifically, to a method and device for adjusting a headrest of a vehicle seat in the field of vehicle control, and a vehicle. Background Art

[0002] With the development of the automobile industry, automobiles are increasingly developing towards comfort. For example, vehicle seats are equipped with seat headrests to provide head support for passengers during driving.

[0003] However, due to factors such as the height and sitting posture of the passengers, the position of the seat headrest relative to different passengers is different. For example, if the passenger is tall, the seat headrest will be too low relative to the passenger. In the event of emergency braking or rear-end collision during driving, the seat headrest will correspond to the passenger's neck and the huge impact pressure generated by the collision may cause squeezing of the neck, thereby threatening the driving safety of the driver and passengers.

[0004] Therefore, how to adjust the seat headrest is an urgent problem to be solved in order to improve the safety of the seat headrest during vehicle driving. Summary of the invention

[0005] The present application provides a method and device for adjusting a seat headrest of a vehicle seat, and a vehicle, wherein the method can improve the safety of using the seat headrest of the vehicle during driving.

[0006] In a first aspect, a method for adjusting a seat headrest of a vehicle seat is provided, wherein the vehicle seat is provided with a seat headrest, and the seat headrest has a height adjustment function, the method comprising:

[0007] When a passenger is detected to be on the vehicle seat, obtaining a head position of the passenger when the passenger is on the vehicle seat, wherein the head position refers to a distance between an upper surface of the vehicle seat and the head of the passenger;

[0008] When it is detected that the seat back of the vehicle seat is not in the initial angle position, obtaining the inclination angle of the seat back relative to the initial angle position;

[0009] Based on the inclination angle and the subject's head position, the seat headrest is controlled to be adjusted to a target headrest height, wherein the target headrest height is negatively correlated with the backrest inclination angle and positively correlated with the subject's head position.

[0010] In the above technical solution, the embodiment of the present application provides a method for adjusting the headrest of a vehicle seat: by obtaining the head position of the passenger sitting on the vehicle seat and the inclination angle of the vehicle seat backrest, the height of the headrest of the seat headrest is comprehensively adjusted. The headrest is adapted to the head position of the passenger sitting on the vehicle seat and leaning on the seat backrest, providing a more comfortable head support for the driver and passenger during driving; in addition, it can also buffer the huge impact pressure caused by the collision, reduce the damage to the head and neck of the driver and passenger caused by emergency braking or rear-end collision during driving, and further improve the driving safety of the driver and passenger.

[0011] In combination with the first aspect, in some possible implementations, the seat headrest is controlled to be adjusted to a target headrest height based on the tilt angle and the object's head position, including: determining an initial adjustment height of the seat headrest based on the object's head position; determining a correction distance based on a unit adjustment distance and the tilt angle, the unit adjustment distance referring to an adjustment distance corresponding to a unit tilt angle; correcting the initial adjustment height based on the correction distance to determine the target headrest height; and controlling the seat headrest to be adjusted to the target headrest height.

[0012] In the above technical scheme, the present application also proposes a headrest height determination method that corrects the initial adjustment height determined based on the object's head position according to the inclination angle. This can avoid the problem that the seat headrest height is still adjusted according to the object's head position after the seat back is adjusted, resulting in the seat headrest being unable to face the head position of the passenger. This can improve the height adjustment accuracy of the seat headrest.

[0013] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, obtaining the object head position of the passenger when sitting on the vehicle seat includes: obtaining the sitting posture information and gender information of the passenger through the in-vehicle image captured by the in-vehicle camera; performing object matching based on the sitting posture information and the gender information to obtain a target object that matches the passenger, and the target object is a pre-established passenger object model; and determining the head position associated with the target object as the object head position of the passenger when sitting on the vehicle seat.

[0014] In the above technical solution, the present application also proposes to obtain the sitting posture information and gender information of the passenger to match the target object similar to the passenger, thereby determining the head position of the passenger. This provides a feasible implementation method for determining the head position of the object and improves the accuracy of determining the head position of the object.

[0015] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the seat headrest has headrest side wings, and the seat headrest has a massage function and a support function; the method also includes: when it is detected that the passenger has fatigue behavior and the passenger is a driving object, controlling the seat headrest to turn on the massage function; when it is detected that the passenger has fatigue behavior and the passenger is a non-driving object, controlling the seat headrest to turn on the support function, and when the support function is turned on, the headrest side wings of the seat headrest are in an expanded state.

[0016] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, when it is detected that the passenger has fatigue behavior and the passenger is the driving object, the seat headrest is controlled to turn on the massage function, including: when it is detected that the passenger has fatigue behavior and the passenger is the driving object, the vehicle status of the vehicle is obtained, and the vehicle status includes a driving state or a parking state; when the vehicle is in the driving state, the seat headrest is controlled to turn on the massage function; the method also includes: when the vehicle is in the parking state, the seat headrest is controlled to turn on the support function.

[0017] In combination with the first aspect and the above-mentioned implementations, in some possible implementations, the method further includes: when it is detected that the passenger does not have the fatigue behavior, controlling the seat headrest to turn off the support function or the massage function.

[0018] In the above technical solution, the present application also proposes to determine whether to turn on the massage function or support function of the seat headrest by judging whether the passenger is fatigued, whether the passenger is a driver, and whether the vehicle is in driving state. When the passenger is a driver and fatigued, and the vehicle is in driving state, the massage function of the seat headrest can be turned on to stimulate the driver to stay awake and avoid fatigue driving that affects driving safety; and when the passenger is a non-driver and fatigued, the support function of the seat headrest can be turned on to provide a more comfortable driving rest environment for the passenger.

[0019] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the method also includes: when it is detected that the passenger on the vehicle seat leaves and the vehicle seat is the rear seat of the driver's seat, controlling the seat headrest to adjust back to the initial headrest height, and the initial headrest height means that the seat headrest cannot be adjusted downward.

[0020] In the above technical solution, the present application also proposes that when it is detected that the passenger on the vehicle seat has left, and the vehicle seat is the rear seat of the driving seat, the seat headrest can be adjusted back to the lowest height in time to avoid blocking the rearward field of view of the driving passenger and improve driving safety.

[0021] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the method also includes: when the vehicle seat is a rear seat of the driver's seat, obtaining the occlusion rate of the seat headrest on the rear window after the seat headrest is adjusted to the target headrest height; when the occlusion rate is greater than a threshold, obtaining surround video data of the rear of the vehicle through a surround camera; and displaying the rear image of the vehicle on the vehicle display screen based on the surround video data.

[0022] In the above technical solution, the present application also proposes that when the seat headrest severely blocks the rear window, the rear image of the vehicle can be displayed on the display screen based on the surround video data collected by the surround camera to compensate for the problem that the driver cannot see the rear of the vehicle through the rear window.

[0023] In a second aspect, a seat headrest adjustment device for a vehicle seat is provided, wherein the vehicle seat is provided with a seat headrest, and the seat headrest has a height adjustment function, and the device comprises:

[0024] A first acquisition module is used to acquire the head position of the passenger when the passenger is sitting on the vehicle seat when the passenger is detected to be on the vehicle seat, wherein the head position of the passenger refers to the distance between the upper surface of the vehicle seat and the head of the passenger;

[0025] A second acquisition module is used to acquire a tilt angle of the seat back relative to the initial angle position when it is detected that the seat back of the vehicle seat is not in the initial angle position;

[0026] The first control module is used to control the seat headrest to adjust to a target headrest height based on the tilt angle and the subject's head position, wherein the target headrest height is negatively correlated with the backrest tilt angle and positively correlated with the subject's head position.

[0027] In combination with the second aspect, in some possible implementations, the first control module is also used to: determine the initial adjustment height of the seat headrest based on the head position of the object; determine the correction distance based on the unit adjustment distance and the tilt angle, the unit adjustment distance refers to the adjustment distance corresponding to the unit tilt angle; correct the initial adjustment height based on the correction distance to determine the target headrest height; control the seat headrest to adjust to the target headrest height.

[0028] In combination with the second aspect and the above-mentioned implementation methods, in some possible implementation methods, the first acquisition module is also used to: obtain the sitting posture information and gender information of the passenger through the in-vehicle image captured by the in-vehicle camera; perform object matching based on the sitting posture information and the gender information to obtain a target object that matches the passenger, and the target object is a pre-established passenger object model; and determine the head position associated with the target object as the object head position of the passenger when sitting on the vehicle seat.

[0029] In combination with the second aspect and the above-mentioned implementation methods, in some possible implementation methods, the seat headrest has headrest side wings, and the seat headrest has a massage function and a support function; the device also includes: a second control module, which is used to control the seat headrest to turn on the massage function when it is detected that the passenger has fatigue behavior and the passenger is a driving object; a third control module, which is used to control the seat headrest to turn on the support function when it is detected that the passenger has fatigue behavior and the passenger is a non-driving object, and when the support function is turned on, the headrest side wings of the seat headrest are in an expanded state.

[0030] In combination with the second aspect and the above-mentioned implementation methods, in some possible implementation methods, the second control module is also used to: when it is detected that the passenger has the fatigue behavior and the passenger is the driving object, obtain the vehicle status of the vehicle, and the vehicle status includes a driving state or a parking state; when the vehicle is in the driving state, control the seat headrest to turn on the massage function; the device also includes: a fourth control module, used to control the seat headrest to turn on the support function when the vehicle is in the parking state.

[0031] In combination with the second aspect and the above-mentioned implementation methods, in some possible implementation methods, the device also includes: a fifth control module, which is used to control the seat headrest to turn off the support function or the massage function when it is detected that the passenger does not have the fatigue behavior.

[0032] In combination with the second aspect and the above-mentioned implementation methods, in some possible implementation methods, the device also includes: a sixth control module, which is used to control the seat headrest to adjust back to the initial headrest height when it is detected that the passenger on the vehicle seat leaves and the vehicle seat is the rear seat of the driver's seat. The initial headrest height means that the seat headrest cannot be adjusted downward.

[0033] In combination with the second aspect and the above-mentioned implementation methods, in some possible implementation methods, the device also includes: a third acquisition module, which is used to obtain the occlusion rate of the rear window by the seat headrest after the seat headrest is adjusted to the target headrest height when the vehicle seat is the rear seat of the driver's seat; a fourth acquisition module, which is used to obtain the surround video data of the rear of the vehicle through the surround camera when the occlusion rate is greater than a threshold; and a display module, which is used to display the rear image of the vehicle on the vehicle display screen based on the surround video data.

[0034] In a third aspect, a vehicle is provided, comprising a memory and a processor. The memory is used to store an executable program code, and the processor is used to call and run the executable program code from the memory, so that the vehicle executes the vehicle seat headrest adjustment method in the first aspect or any possible implementation of the first aspect.

[0035] In a fourth aspect, a computer program product is provided, the computer program product comprising: a computer program code, when the computer program code is run on a computer, the computer is caused to execute the vehicle seat headrest adjustment method in the first aspect or any possible implementation of the first aspect.

[0036] In a fifth aspect, a computer-readable storage medium is provided, which stores a computer program code. When the computer program code runs on a computer, the computer executes the method for adjusting the seat headrest of a vehicle seat in the above-mentioned first aspect or any possible implementation of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic flow chart of a method for adjusting a seat headrest of a vehicle seat provided in an embodiment of the present application;

[0038] Figure 2 is a schematic structural diagram of a vehicle seat provided in an embodiment of the present application;

[0039] Figure 3 is a schematic flow chart of another method for adjusting a seat headrest of a vehicle seat provided in an embodiment of the present application;

[0040] Figure 4 is a schematic diagram of the relationship between an initial adjustment height and a target headrest height provided in an embodiment of the present application;

[0041] Figure 5 is a schematic flow chart of another method for adjusting a seat headrest of a vehicle seat provided in an embodiment of the present application;

[0042] Figure 6It is a schematic diagram of a headrest adjustment process of a vehicle seat provided in an embodiment of the present application;

[0043] Figure 7 is a schematic flow chart of another method for adjusting a seat headrest of a vehicle seat provided in an embodiment of the present application;

[0044] Figure 8 It is a structural schematic diagram of a seat headrest adjustment device for a vehicle seat provided in an embodiment of the present application;

[0045] Fig. 9 It is a structural schematic diagram of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] The technical solution in the present application will be described clearly and in detail below in conjunction with the accompanying drawings. In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0047] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0048] Figure 1 1 is a schematic flow chart of a method for adjusting a headrest of a vehicle seat provided in an embodiment of the present application. It should be understood that the method can be applied to vehicles.

[0049] For example, Figure 1 As shown, the method 100 includes:

[0050] Step 101, when it is detected that there is a passenger on the vehicle seat, the head position of the passenger when sitting on the vehicle seat is obtained, and the head position of the passenger refers to the distance between the upper surface of the vehicle seat and the head of the passenger.

[0051] Among them, in the vehicle provided in the embodiment of the present application, each vehicle seat is equipped with a seat headrest, and the seat headrest has a height adjustment function, the headrest height of the seat headrest refers to the distance between the upper surface of the vehicle seat to the upper surface of the seat headrest, and the upper surface of the vehicle seat is the seat cushion surface on the vehicle seat. Figure 2 is a schematic structural diagram of a vehicle seat provided in an embodiment of the present application. Figure 2 As shown, a seat headrest 201 is arranged on the seat back of the vehicle seat 200, and the seat headrest 201 is adjusted in height by a telescopic rod 202. The headrest height is the distance between the upper surface (seat cushion surface) of the vehicle seat and the upper surface of the seat headrest (such as Figure 2 A distance in ).

[0052] During the adjustment process of the seat headrest of a vehicle seat, there are two position states: the use position and the non-use position. The non-use position is when the seat headrest is at the lowest headrest height and cannot be adjusted downward any further; the use position is any adjustable and lockable position except the non-use position.

[0053] In the event of emergency braking or rear-end collision during driving, if the seat headrest is in the non-use position, since the seat headrest is generally in line with the neck of the passenger when in the non-use position, the neck may be squeezed by the huge impact pressure generated by the collision, thereby threatening the driving safety of the driver and passengers. Therefore, the present application provides a seat headrest with an adjustment function, so that the seat headrest can be adjusted to a height corresponding to the driver's head position in real time, which can not only cushion the huge impact pressure generated by the collision, but also provide comfortable head support for the driver and passengers during normal driving.

[0054] Since different passengers (passengers are also called vehicle users) have different heights, genders, sitting postures, etc., the height of the seat headrest that needs to be adjusted when different passengers are sitting on the vehicle seat also varies. Therefore, in a possible implementation, when a passenger is detected on the vehicle seat, the head position of the passenger when the passenger is sitting on the vehicle seat can be first obtained, so that the headrest height of the seat headrest can be determined based on the head position of the passenger to adapt to the passenger.

[0055] The subject head position refers to the distance between the upper surface of the vehicle seat and the subject's head.

[0056] In order to obtain the head position of the passenger, a camera is deployed on the vehicle to collect images inside the vehicle through the camera to obtain the passenger's seating position, height, sitting posture, gender and other information.

[0057] Optionally, in order to detect whether there is a passenger on the vehicle seat, a seat sensor is provided on the vehicle seat, and the seat sensor is used to detect whether there is a passenger on the vehicle seat. Exemplarily, the seat sensor may be a pressure sensor, and the pressure sensor may be used to detect the force applied to the seat, and when the force applied to the seat is detected to be greater than a pressure threshold, it is determined that there is a passenger on the vehicle seat. Alternatively, the vehicle's internal camera may be used to collect images inside the vehicle to determine whether there is a passenger on the vehicle seat.

[0058] Step 102 : when it is detected that the seat back of the vehicle seat is not in the initial angle position, obtaining the inclination angle of the seat back relative to the initial angle position.

[0059] Since the seat headrest is arranged on the seat back, and the seat back can be adjusted to a tilt angle forward and backward, the adjustment of the tilt angle may also affect the height adjustment of the seat headrest. For example, at the same subject head position, the seat back is in the initial position, and the subject head position can be consistent with the headrest height. If the seat back is adjusted backward to a preset angle, the headrest height needs to be relatively moved down a certain distance to meet the head position when the passenger leans on the backrest. Therefore, in a possible implementation, when it is detected that the seat back of the vehicle seat is not in the initial angle position, the vehicle can obtain the tilt angle of the seat back relative to the initial angle position for subsequent adjustment of the headrest height.

[0060] Step 103, based on the tilt angle and the subject's head position, control the seat headrest to adjust to a target headrest height, the target headrest height is negatively correlated with the backrest tilt angle, and the target headrest height is positively correlated with the subject's head position.

[0061] Furthermore, the vehicle can comprehensively consider the relationship between the seat back's tilt angle and the headrest height of the seat headrest - the target headrest height is negatively correlated with the seat back tilt angle, and the relationship between the subject's head position and the headrest height of the seat headrest - the target headrest height is negatively correlated with the seat back tilt angle, to determine the target headrest height to which the seat headrest needs to be adjusted, and then control the seat headrest to be adjusted to the target headrest height.

[0062] In summary, the embodiment of the present application provides a method for adjusting the headrest of a vehicle seat: by obtaining the head position of the passenger sitting on the vehicle seat and the inclination angle of the vehicle seat backrest, the height of the headrest of the seat headrest is comprehensively adjusted. The headrest is adapted to the head position of the passenger sitting on the vehicle seat and leaning on the seat backrest, providing a more comfortable head support for the driver and passenger during driving; in addition, it can also buffer the huge impact pressure caused by the collision, reduce the damage to the head and neck of the driver and passenger caused by emergency braking or rear-end collision during driving, and further improve the driving safety of the driver and passenger.

[0063] Figure 3 1 is a schematic flow chart of another method for adjusting the headrest of a vehicle seat provided in an embodiment of the present application. It should be understood that the method can be applied to vehicles.

[0064] For example, Figure 3 As shown, the method 300 includes:

[0065] Step 301, when it is detected that there is a passenger on the vehicle seat, the sitting posture information and gender information of the passenger are obtained through the in-vehicle image captured by the in-vehicle camera.

[0066] When it is detected that there are passengers on the vehicle seats, the vehicle can control the in-vehicle camera to capture in-vehicle images and perform image recognition on the in-vehicle images to obtain the vehicle seats occupied by each passenger in the in-vehicle images, as well as the object information of each passenger, which includes at least sitting posture information, gender information, height information, etc.; and then based on the object information, the head position of the passenger can be analyzed.

[0067] Step 302, object matching is performed based on the sitting posture information and the gender information to obtain a target object that matches the passenger object, where the target object is a pre-established passenger object model.

[0068] Since the passenger is inside the vehicle, it is impossible to accurately determine the head position of the passenger. Therefore, multiple passenger object models are created in advance, and each passenger object model has associated gender information, sitting posture information and head position; so that during the application process, the vehicle can perform object matching based on the acquired sitting posture information and gender information to obtain the target object that matches the passenger, and then determine the object's head position.

[0069] Optionally, passengers with different sitting posture information and different genders sitting in vehicle seats can be simulated in advance, so as to obtain the head position associated with the passenger model.

[0070] Step 303 , determining the head position associated with the target object as the object head position of the passenger when sitting on the vehicle seat.

[0071] The vehicle determines the head position associated with the target object as the head position of the object when the occupant is seated on the vehicle seat.

[0072] Step 304 : when it is detected that the seat back of the vehicle seat is not in the initial angle position, obtaining the inclination angle of the seat back relative to the initial angle position.

[0073] The implementation of step 304 may refer to step 102 , and this embodiment will not be described in detail here.

[0074] Step 305 : determining the initial adjustment height of the seat headrest based on the subject's head position.

[0075] When the seat back of the vehicle seat is at the initial angle position, the subject head position is the headrest height to which the seat headrest needs to be adjusted; however, when the seat back of the vehicle seat is not at the initial angle position, for example, after being tilted back at a certain angle, if the seat headrest is still adjusted according to the subject head position, it may not be possible to make the seat headrest exactly at the head position of the passenger. Therefore, when adjusting the seat headrest based on the subject head position and the tilt angle of the seat back, the initial adjustment height of the seat headrest is first determined based on the subject head position, and then the initial adjustment height is corrected based on the tilt angle to obtain the final target headrest height.

[0076] Step 306: Determine the correction distance based on the unit adjustment distance and the tilt angle, where the unit adjustment distance refers to the adjustment distance corresponding to the unit tilt angle.

[0077] The vehicle stores the unit adjustment distance that the headrest seat needs to be lowered for each unit tilt angle of the seat back of the vehicle seat, so that the vehicle can determine the correction distance based on the unit adjustment distance and the tilt angle to correct the initial adjustment height of the seat headrest.

[0078] Step 307: Correct the initial adjustment height based on the correction distance to determine the target headrest height.

[0079] The target headrest height of the seat headrest can be obtained by subtracting the correction distance from the initial adjustment height.

[0080] Figure 4 This is a schematic diagram of the relationship between the initial adjustment height and the target headrest height provided by an embodiment of the present application. If the target head position of the passenger is as shown in A in the figure, the first initial headrest height determined according to the target head position is also A, but since the seat back has an inclination angle D, the correction distance corresponding to the inclination angle D is B, and the corresponding target headrest height at this time can be AB = C. The seat headrest is adjusted to C height accordingly.

[0081] Step 308 , controlling the seat headrest to adjust to a target headrest height.

[0082] After determining the target headrest height at which the current seat headrest should be located, the vehicle can obtain the current headrest height of the seat headrest, and then determine the headrest height adjustment amount based on the difference between the target headrest height and the current headrest height to control the seat headrest to adjust to the target headrest height.

[0083] Step 309: When it is detected that the passenger on the vehicle seat leaves, and the vehicle seat is a rear seat of the driver's seat, the seat headrest is controlled to adjust back to the initial headrest height.

[0084] The initial headrest height means that the seat headrest cannot be adjusted downward. When it is detected that the passenger has left the vehicle seat and the vehicle seat is the rear seat of the driver's seat, in order to avoid the vehicle seat headrest being too high and affecting the rearward vision of the driver, the seat headrest can be adjusted back to the initial headrest height in time to avoid blocking the rear window.

[0085] In this embodiment, the sitting posture information and gender information of the passenger are obtained to match the target object similar to the passenger, and then the head position of the passenger is determined. A feasible implementation method is provided for determining the head position of the object, and the accuracy of determining the head position of the object is improved. In addition, the headrest height determination method that corrects the initial adjustment height determined based on the head position of the object according to the tilt angle can avoid the problem that the seat headrest height is still adjusted according to the head position of the object after the seat back is adjusted, resulting in the seat headrest being unable to face the head position of the passenger, and the height adjustment accuracy of the seat headrest can be improved.

[0086] In one possible application scenario, in addition to providing support and cushioning for the neck or back of the head of the driver and passenger, the seat headrest can also provide side support when the passenger has sleep needs, thereby providing the passenger with a more comfortable sleeping experience.

[0087] Figure 5 1 is a schematic flow chart of another method for adjusting the headrest of a vehicle seat provided in an embodiment of the present application. It should be understood that the method can be applied to vehicles.

[0088] For example, Figure 5 As shown, the method 500 includes:

[0089] Step 501, when it is detected that there is a passenger on the vehicle seat, the head position of the passenger when sitting on the vehicle seat is obtained, and the head position of the passenger refers to the distance between the upper surface of the vehicle seat and the head of the passenger.

[0090] Step 502 : when it is detected that the seat back of the vehicle seat is not in the initial angle position, obtaining the inclination angle of the seat back relative to the initial angle position.

[0091] Step 503 : Based on the tilt angle and the head position of the subject, the seat headrest is controlled to be adjusted to a target headrest height.

[0092] The implementation of steps 501 to 503 may refer to the above embodiments, and will not be described in detail in this embodiment.

[0093] Step 504: When fatigue behavior of the passenger is detected and the passenger is the driver, the massage function of the seat headrest is controlled to be activated.

[0094] The seat headrest is provided with headrest side wings, which are located on the left and right sides of the seat headrest. The headrest side wings include an unfolded state (open state) and a closed state. When the headrest side wings are in the closed state, the seat headrest can only provide a support function for the back of the head of the driver and passenger; when the headrest side wings are in the open state, the seat headrest can provide support for the head of the driver and passenger on both sides in addition to providing a support function for the back of the head of the driver and passenger. Optionally, the driver and passenger can manually open the headrest side wings of the seat headrest through the side wing function control; or, the headrest side wings can be controlled to open through voice commands.

[0095] Optionally, the seat headrest has a massage function in addition to the support function at the rear and left and right sides. Optionally, the driver and passenger can manually turn on the massage function of the seat headrest by triggering the massage function control; or, the seat headrest can be controlled to turn on the massage function through voice commands.

[0096] In addition to manual or active control of the seat headrest by the driver and passenger to activate the massage function or the support function, in other possible implementations, the vehicle can also analyze the driver and passenger's behavior to determine whether the driver and passenger need to activate the massage function or the support function, and automatically activate the massage function or the support function accordingly.

[0097] When the passenger is tired, they may unfold the side wings of the headrest for sleeping support; or when they are tired but need to be refreshed, they may need massage stimulation to keep them awake. The judgment that the passenger needs to be refreshed or sleep can be determined by judging whether the passenger is a passenger or a driver. Therefore, in a possible implementation, when the vehicle detects that the passenger is fatigued, it further judges whether the passenger is a driver or a non-driver; if the passenger is a driver, in order to avoid safety accidents caused by fatigue driving, the vehicle automatically controls the seat headrest to turn on the massage function, so as to stimulate the passenger to stay awake by massaging the head and neck of the passenger.

[0098] Regarding the method of detecting whether the passenger has fatigue behavior, the vehicle can collect images inside the vehicle through the camera inside the vehicle. If the image features corresponding to fatigue behavior of the passenger are recognized through the image inside the vehicle, it is determined that the passenger has fatigue behavior. For example, fatigue behavior may include yawning, frequent blinking, frequent eye rubbing, head shaking, eye closing, etc.

[0099] For the driver, there may be a situation where the vehicle stops at the driver's seat to rest. If the massage function is automatically turned on, it may affect the driver's rest. When deciding whether to turn on the massage function, in addition to considering whether the passenger is the driver, it is also necessary to further consider the current vehicle state. Correspondingly, in an illustrative example, step 504 may also include step 504A and step 504B.

[0100] Step 504A, when fatigue behavior of the passenger is detected and the passenger is a driving subject, the vehicle status of the vehicle is obtained, and the vehicle status includes a driving status or a parking status.

[0101] When the vehicle detects that the passenger is fatigued and the passenger is a driver, the vehicle state can be further acquired to determine whether the passenger needs to be stimulated to stay awake by the seat headrest according to the vehicle state. The vehicle state can include a driving state or a parking state.

[0102] As for the method of obtaining the vehicle state of the vehicle, the vehicle speed can be detected. If the vehicle speed is higher than a speed threshold, it is determined that the vehicle is in a driving state; if the vehicle speed is lower than the speed threshold, it is determined that the vehicle is in a parking state. For example, the speed threshold can be 2 km / h.

[0103] Step 504B, when the vehicle is in motion, control the seat headrest to start the massage function.

[0104] If the vehicle is in motion and the passengers are fatigued, which may cause a traffic accident, the vehicle can control the seat headrest to activate the massage function to help the passengers stay awake.

[0105] Optionally, when the vehicle is in the parking state, which means that the driver is currently resting, in order to allow the driver to have a better rest, the seat headrest support function is controlled to turn on. When the support function is turned on, the headrest side wings of the seat headrest are in an unfolded state to provide support for the driver from the left and right sides, preventing the driver's head from slipping, and providing a better sleeping place for the driver.

[0106] Step 505, when fatigue behavior of the passenger is detected and the passenger is not a driving object, the seat headrest is controlled to turn on the support function. When the support function is turned on, the headrest side wings of the seat headrest are in an unfolded state.

[0107] In the case where the passenger is not a driver, whether the non-driver is awake or not does not affect the driving safety of the vehicle. Therefore, in a possible implementation, when the vehicle detects that the passenger is fatigued but the passenger is not a driver, the seat headrest can be directly controlled to turn on the support function. When the support function is turned on, the headrest side wings of the seat headrest are in an unfolded state to provide support for the passenger from both sides to prevent the passenger's head from sliding down, providing the passenger with a better driving sleeping experience.

[0108] Step 506: When it is detected that the passenger does not have fatigue behavior, the seat headrest is controlled to turn off the support function or the massage function.

[0109] Optionally, when it is detected that the occupant is not showing any fatigue behavior, in order to avoid the restriction and influence of the seat headrest's support function or massage function on the occupant's driving or other behaviors, the vehicle can control the seat headrest to turn off the support function or massage function.

[0110] Figure 6 Schematic diagram of the headrest adjustment process of a vehicle seat provided in an embodiment of the present application. Figure 6As shown, taking the rear seats as an example, after the passenger gets on the vehicle and sits down, the seat sensor 601 is activated to detect that the seat is occupied, and the determination result is transmitted to the headrest sensor 602; the headrest sensor 602 transmits the signal to the in-vehicle camera, and the in-vehicle camera collects the passenger's position, height, sitting posture, gender and other information, and feeds the information back to the headrest sensor 602 to calculate the passenger's head position 603; the headrest sensor 602 detects the passenger's head position 603, and transmits the signal to the headrest controller and the fatigue detection sensor 604; the headrest controller automatically adjusts the headrest to a suitable position according to the signal detected by the headrest sensor 602; the fatigue detection sensor 604 is activated after receiving the signal from the headrest sensor 602 Activate, mobilize the camera and microphone in the car to detect the passenger, and after detecting that the passenger is sleepy (yawning, dozing off, etc.), transmit the signal to the headrest sensor 602; the headrest sensor 602 mobilizes the smart assistant, and the smart assistant asks the passenger whether he wants to rest (whether he needs music to help him sleep) or relieve and refresh (headrest massage), and the smart assistant feeds back the passenger feedback result to the headrest sensor 602; the headrest sensor 602 transmits the signal to the headrest controller, if the signal is signal 1 (want to rest), the headrest side wings are opened to provide support for the passenger, and the headrest audio is turned on to provide sleep music; if the signal is signal 2 (relieve and refresh), the headrest massage is turned on to provide head massage to help the passenger wake up. When the fatigue detection sensor 604 detects that the passenger is awake (wakes up), the headrest side wings are retracted. Optionally, when the seat sensor 601 detects that the passenger has left, the seat headrest is lowered to the lowest level.

[0111] In this embodiment, it is determined whether to turn on the massage function or support function of the seat headrest by judging whether the passenger is fatigued, whether the passenger is a driver, and whether the vehicle is in a driving state. When the passenger is a driver and fatigued, and the vehicle is in a driving state, the massage function of the seat headrest can be turned on to stimulate the driver to stay awake and avoid fatigue driving that affects driving safety; and when the passenger is a non-driver and fatigued, the support function of the seat headrest can be turned on to provide a more comfortable driving rest environment for the passenger.

[0112] If the vehicle seat is the rear seat of the driver's seat, a high headrest may block the driver's inner rear view, that is, the driver cannot see the situation behind the vehicle from the rear window, which may bring driving risks.

[0113] Figure 7 1 is a schematic flow chart of another method for adjusting the headrest of a vehicle seat provided in an embodiment of the present application. It should be understood that the method can be applied to vehicles.

[0114] For example, Figure 7 As shown, the method 700 includes:

[0115] Step 701, when it is detected that there is a passenger on the vehicle seat, the head position of the passenger when sitting on the vehicle seat is obtained, and the head position of the passenger refers to the distance between the upper surface of the vehicle seat and the head of the passenger.

[0116] Step 702 : when it is detected that the seat back of the vehicle seat is not in the initial angle position, obtaining the inclination angle of the seat back relative to the initial angle position.

[0117] Step 703 : Based on the tilt angle and the head position of the subject, the seat headrest is controlled to be adjusted to a target headrest height.

[0118] The implementation of steps 701 to 703 may refer to the above embodiments, and will not be described in detail in this embodiment.

[0119] Step 704 , when the vehicle seat is a rear seat of the driver's seat, obtain the blocking rate of the rear window by the seat headrest after the seat headrest is adjusted to a target headrest height.

[0120] In the case where the vehicle seat is the rear seat of the driver's seat, adjusting the height of the headrest of the vehicle seat may block the inner rear view of the driver. In order to meet the headrest comfort requirements of the passengers in the rear seats, the inner rear view of the driver can also be taken into account. In a possible implementation, in the case where the vehicle seat is the rear seat of the driver's seat, the vehicle can obtain the occupancy rate of the rear window by the seat headrest after adjusting to the target headrest height, and then determine whether it is necessary to provide the rear image of the vehicle to the driver in other ways.

[0121] Alternatively, the blocking ratio may be determined by a ratio of a target headrest height to a headrest height of a headrest seat when the rear window is completely blocked.

[0122] Step 705: When the occlusion rate is greater than a threshold, obtain surround view video data behind the vehicle through a surround view camera.

[0123] When the occlusion rate is large and greater than the threshold, it means that the driver cannot see the rear of the vehicle through the rear window, and other methods are needed to provide the driver with the rear image of the vehicle. A surround view camera may be set at the rear of the vehicle, and the vehicle can obtain the surround view video data behind the vehicle through the surround view camera, and then provide the driver with the rear image of the vehicle by displaying the surround view video data.

[0124] Exemplarily, the threshold value may be 50%.

[0125] Optionally, when the occlusion rate is small and less than the threshold, it means that the driver can still see the rear of the vehicle through the rear window, and there is no need to provide the driver with the rear image of the vehicle by other means.

[0126] Step 706 , displaying the rear image of the vehicle on the vehicle display screen based on the surround view video data.

[0127] The vehicle can display the acquired surround view video data on the vehicle display screen, so that the vehicle display screen can display the image behind the vehicle without the driver having to look behind the vehicle through the rear window.

[0128] In this embodiment, when the seat headrest severely blocks the rear window, the image behind the vehicle can be displayed on the display screen based on the surround video data collected by the surround camera to compensate for the problem that the driver cannot see the rear of the vehicle through the rear window.

[0129] Figure 8 The present invention is a schematic diagram of a structure of a seat headrest adjustment device for a vehicle seat provided in an embodiment of the present invention. The vehicle seat of the vehicle is provided with a seat headrest, and the seat headrest has a height adjustment function.

[0130] For example, Figure 8 As shown, the device 800 includes:

[0131] The first acquisition module 801 is used to acquire the head position of the passenger when the passenger is sitting on the vehicle seat when it is detected that there is a passenger on the vehicle seat, wherein the head position of the passenger refers to the distance between the upper surface of the vehicle seat and the head of the passenger;

[0132] A second acquisition module 802 is used to acquire a tilt angle of the seat back relative to the initial angle position when it is detected that the seat back of the vehicle seat is not in the initial angle position;

[0133] The first control module 803 is used to control the seat headrest to adjust to a target headrest height based on the tilt angle and the subject's head position, wherein the target headrest height is negatively correlated with the backrest tilt angle and positively correlated with the subject's head position.

[0134] In one possible implementation, the first control module 803 is also used to: determine the initial adjustment height of the seat headrest based on the head position of the object; determine the correction distance based on the unit adjustment distance and the tilt angle, the unit adjustment distance refers to the adjustment distance corresponding to the unit tilt angle; correct the initial adjustment height based on the correction distance to determine the target headrest height; control the seat headrest to adjust to the target headrest height.

[0135] In one possible implementation, the first acquisition module 801 is also used to: obtain the sitting posture information and gender information of the passenger through the in-vehicle image captured by the in-vehicle camera; perform object matching based on the sitting posture information and the gender information to obtain a target object that matches the passenger, and the target object is a pre-established passenger object model; and determine the head position associated with the target object as the head position of the passenger when sitting on the vehicle seat.

[0136] In one possible implementation, the seat headrest has headrest side wings, and the seat headrest has a massage function and a support function; the device also includes: a second control module, which is used to control the seat headrest to turn on the massage function when it is detected that the passenger has fatigue behavior and the passenger is a driving object; a third control module, which is used to control the seat headrest to turn on the support function when it is detected that the passenger has fatigue behavior and the passenger is a non-driving object. When the support function is turned on, the headrest side wings of the seat headrest are in an expanded state.

[0137] In one possible implementation, the second control module is also used to: when it is detected that the passenger has the fatigue behavior and the passenger is the driving object, obtain the vehicle state of the vehicle, which vehicle state includes a driving state or a parking state; when the vehicle is in the driving state, control the seat headrest to turn on the massage function; the device also includes: a fourth control module, used to control the seat headrest to turn on the support function when the vehicle is in the parking state.

[0138] In a possible implementation, the device further includes: a fifth control module, which is used to control the seat headrest to turn off the support function or the massage function when it is detected that the passenger does not have the fatigue behavior.

[0139] In one possible implementation, the device also includes: a sixth control module, which is used to control the seat headrest to adjust back to the initial headrest height when it is detected that the passenger on the vehicle seat leaves and the vehicle seat is the rear seat of the driver's seat. The initial headrest height means that the seat headrest cannot be adjusted downward.

[0140] In one possible implementation, the device also includes: a third acquisition module, which is used to obtain the occlusion rate of the seat headrest on the rear window after the seat headrest is adjusted to the target headrest height when the vehicle seat is the rear seat of the driver's seat; a fourth acquisition module, which is used to obtain surround-view video data of the rear of the vehicle through a surround-view camera when the occlusion rate is greater than a threshold; and a display module, which is used to display the rear image of the vehicle on the vehicle display screen based on the surround-view video data.

[0141] In summary, the embodiment of the present application provides a method for adjusting the headrest of a vehicle seat: by obtaining the head position of the passenger sitting on the vehicle seat and the inclination angle of the vehicle seat backrest, the height of the headrest of the seat headrest is comprehensively adjusted. The headrest is adapted to the head position of the passenger sitting on the vehicle seat and leaning on the seat backrest, providing a more comfortable head support for the driver and passenger during driving; in addition, it can also buffer the huge impact pressure caused by the collision, reduce the damage to the head and neck of the driver and passenger caused by emergency braking or rear-end collision during driving, and further improve the driving safety of the driver and passenger.

[0142] Fig. 9 It is a structural schematic diagram of a vehicle provided in an embodiment of the present application.

[0143] For example, Fig. 9 As shown, the vehicle 900 includes: a memory 901 and a processor 902, wherein the memory 901 stores an executable program code 903, and the processor 902 is used to call and execute the executable program code 903 to perform a method for adjusting a seat headrest of a vehicle seat.

[0144] In addition, an embodiment of the present application also protects a device, which may include a memory and a processor, wherein the memory stores an executable program code, and the processor is used to call and execute the executable program code to execute a seat headrest adjustment method for a vehicle seat provided in an embodiment of the present application.

[0145] In this embodiment, the functional modules of the device can be divided according to the above method example. For example, each functional module can be corresponded, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware. It should be noted that the division of modules in this embodiment is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0146] In the case of dividing each functional module according to each function, the device may also include a first acquisition module, a second acquisition module, a first control module, etc. It should be noted that all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, which will not be repeated here.

[0147] It should be understood that the device provided in this embodiment is used to execute the above-mentioned method for adjusting the seat headrest of a vehicle seat, and thus can achieve the same effect as the above-mentioned implementation method.

[0148] In the case of an integrated unit, the device may include a processing module and a storage module. When the device is applied to a vehicle, the processing module may be used to control and manage the actions of the vehicle. The storage module may be used to support the vehicle in executing mutual program codes, etc.

[0149] The processing module may be a processor or a controller, which may implement or execute various exemplary logic blocks, modules and circuits disclosed in the present application. The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, etc. The storage module may be a memory.

[0150] In addition, the device provided in the embodiments of the present application may specifically be a chip, a component or a module, and the chip may include a connected processor and a memory; wherein the memory is used to store instructions, and when the processor calls and executes the instructions, the chip can execute a method for adjusting the headrest of a vehicle seat provided in the above-mentioned embodiment.

[0151] This embodiment also provides a computer-readable storage medium, in which a computer program code is stored. When the computer program code is run on a computer, the computer executes the above-mentioned related method steps to implement a vehicle seat headrest adjustment method provided in the above embodiment.

[0152] This embodiment also provides a computer program product. When the computer program product is run on a computer, the computer is caused to execute the above-mentioned related steps to implement a method for adjusting a vehicle seat headrest provided in the above embodiment.

[0153] Among them, the device, computer-readable storage medium, computer program product or chip provided in this embodiment is used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding method provided above, and will not be repeated here.

[0154] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0155] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0156] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for adjusting a headrest of a vehicle seat, characterized in that: The vehicle seat of the vehicle is provided with a seat headrest, and the seat headrest has a height adjustment function. The method comprises: When a passenger is detected to be on the vehicle seat, obtaining a head position of the passenger when the passenger is on the vehicle seat, wherein the head position refers to a distance between an upper surface of the vehicle seat and the head of the passenger; In the case where it is detected that the seat back of the vehicle seat is not in the initial angle position, obtaining the inclination angle of the seat back relative to the initial angle position; Based on the tilt angle and the subject's head position, the seat headrest is controlled to be adjusted to a target headrest height, wherein the target headrest height is negatively correlated with the backrest tilt angle and positively correlated with the subject's head position.

2. The method according to claim 1, characterized in that: The step of controlling the seat headrest to adjust to a target headrest height based on the tilt angle and the head position of the subject includes: determining an initial adjustment height of the seat headrest based on the subject's head position; Determine a correction distance based on a unit adjustment distance and the tilt angle, wherein the unit adjustment distance refers to an adjustment distance corresponding to the unit tilt angle; Correcting the initial adjustment height based on the correction distance to determine the target headrest height; The seat headrest is controlled to be adjusted to the target headrest height.

3. The method according to claim 1, characterized in that: The step of obtaining the head position of the passenger when the passenger is seated on the vehicle seat comprises: Acquire the sitting posture information and gender information of the passenger through the in-vehicle image captured by the in-vehicle camera; Performing object matching based on the sitting posture information and the gender information to obtain a target object that matches the passenger object, wherein the target object is a pre-established passenger object model; The head position associated with the target object is determined as the object head position of the passenger object when sitting on the vehicle seat.

4. The method according to any one of claims 1 to 3, characterized in that: The seat headrest is provided with headrest side wings, and the seat headrest has a massage function and a support function; The method further comprises: When fatigue behavior of the passenger is detected and the passenger is a driver, controlling the seat headrest to start the massage function; When it is detected that the passenger has the fatigue behavior and the passenger is a non-driving person, the seat headrest is controlled to turn on the support function. When the support function is turned on, the headrest side wings of the seat headrest are in an unfolded state.

5. The method according to claim 4, characterized in that When fatigue behavior of the passenger is detected and the passenger is a driver, controlling the seat headrest to start the massage function includes: When it is detected that the passenger has the fatigue behavior and the passenger is the driving subject, obtaining the vehicle state of the vehicle, wherein the vehicle state includes a driving state or a parking state; When the vehicle is in the driving state, controlling the seat headrest to start the massage function; The method further comprises: When the vehicle is in the parking state, the seat headrest is controlled to start the supporting function.

6. The method according to claim 4, characterized in that The method further comprises: When it is detected that the occupant does not have the fatigue behavior, the seat headrest is controlled to turn off the support function or the massage function.

7. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: When it is detected that the passenger on the vehicle seat leaves and the vehicle seat is a rear seat of a driver's seat, the seat headrest is controlled to adjust back to an initial headrest height, where the initial headrest height means that the seat headrest cannot be adjusted downward.

8. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: In the case where the vehicle seat is a rear seat of a driver's seat, obtaining a blocking rate of the rear window by the seat headrest after the seat headrest is adjusted to the target headrest height; When the occlusion rate is greater than a threshold, acquiring surround view video data behind the vehicle through a surround view camera; The rear image of the vehicle is displayed on a display screen of the vehicle based on the surround view video data.

9. A headrest adjustment device for a vehicle seat, characterized in that: The vehicle seat of the vehicle is provided with a seat headrest, the seat headrest has a height adjustment function, and the device comprises: A first acquisition module is used to acquire the head position of the passenger when the passenger is sitting on the vehicle seat when the passenger is detected to be on the vehicle seat, wherein the head position of the passenger refers to the distance between the upper surface of the vehicle seat and the head of the passenger; a second acquisition module, for acquiring, when detecting that the seat back of the vehicle seat is not at the initial angle position, an inclination angle of the seat back relative to the initial angle position; The first control module is used to control the seat headrest to adjust to a target headrest height based on the tilt angle and the subject's head position, wherein the target headrest height is negatively correlated with the backrest tilt angle, and the target headrest height is positively correlated with the subject's head position.

10. A vehicle, characterized in that: The vehicle comprises: A memory for storing executable program codes; A processor is used to call and run the executable program code from the memory, so that the vehicle executes the seat headrest adjustment method of the vehicle seat as described in any one of claims 1 to 8.

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