Seat headrest adjustment method, device and vehicle for a vehicle seat

Abstract

The application 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 comprises the following steps: in the case that a vehicle seat is detected to have a passenger object, the object head position of the passenger object when sitting 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 passenger object; in the case that the seat backrest of the vehicle seat is detected to be not at an initial angle position, the inclination angle of the seat backrest relative to the initial angle position is obtained; and based on the inclination angle and the object head position, the seat headrest is controlled to be adjusted to a target headrest height. The target headrest height is negatively correlated with the inclination angle of the backrest, and the target headrest height is positively correlated with the object head position. The method can improve the use safety of the seat headrest of the vehicle during driving.

Description

Technical Field

[0001] This application relates to the field of vehicle control, and more specifically, to a method, apparatus, and vehicle for adjusting the headrest of a vehicle seat. Background Technology

[0002] With the development of the automotive industry, cars are increasingly moving towards greater comfort. For example, headrests are now provided for vehicle seats to provide head support for passengers during driving.

[0003] However, due to factors such as the height and posture of passengers, the position of the headrest relative to different passengers varies. For example, if a passenger is tall and the headrest is too low relative to the passenger, during emergency braking or rear-end collision, the headrest may compress the neck due to the huge impact pressure generated by the collision, thus threatening the driving safety of the driver and passengers.

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

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

[0006] In a first aspect, a method for adjusting the headrest of a vehicle seat is provided. The vehicle seat is equipped with a headrest that has a height adjustment function. The method includes:

[0007] If a passenger is detected sitting on the vehicle seat, the position of the passenger's head when sitting on the vehicle seat is obtained. The position of the passenger's head refers to the distance between the upper surface of the vehicle seat and the passenger's head.

[0008] If the seat back of the vehicle seat is not in the initial angle position, obtain the tilt angle of the seat back relative to the initial angle position;

[0009] Based on the tilt angle and the object's head position, the seat headrest is adjusted to a target headrest height. The target headrest height is negatively correlated with the backrest tilt angle and positively correlated with the object's head position.

[0010] In the above technical solution, this application embodiment provides a method for adjusting the headrest of a vehicle seat: by acquiring the head position of the passenger sitting in the vehicle seat and the tilt angle of the vehicle seat back, the headrest height is adjusted comprehensively. This ensures that the headrest is adapted to the head position of the passenger sitting in the vehicle seat and resting against the seat back, providing more comfortable head support for the driver and passengers during driving; in addition, it can also buffer the huge impact pressure generated by collisions, reducing the injury to the head and neck of the driver and passengers caused by emergency braking or rear-end collisions during driving, further improving the driving safety of the driver and passengers.

[0011] In conjunction with the first aspect, in some possible implementations, controlling the adjustment of the seat headrest to a target headrest height based on the tilt angle and the object's head position includes: 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, wherein the unit adjustment distance refers to the 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 adjust to the target headrest height.

[0012] In the above technical solution, this 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 tilt angle. This can avoid the problem that the headrest height is not aligned with the object's head position after the seat back is adjusted, thus improving the accuracy of the headrest height adjustment.

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

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

[0015] In combination with the first aspect and the above-described implementation, in some possible implementations, the headrest has headrest side wings, and the headrest has massage and support functions; the method further includes: when fatigue behavior is detected in the passenger and the passenger is the driver, controlling the headrest to activate the massage function; when fatigue behavior is detected in the passenger and the passenger is not the driver, controlling the headrest to activate the support function, wherein the headrest side wings of the headrest are in an unfolded state when the support function is activated.

[0016] In conjunction with the first aspect and the above implementation methods, in some possible implementation methods, when fatigue behavior is detected in the passenger and the passenger is the driver, controlling the headrest to activate the massage function includes: when fatigue behavior is detected in the passenger and the passenger is the driver, obtaining the vehicle status, which includes driving status or parking status; when the vehicle is in driving status, controlling the headrest to activate the massage function; the method further includes: when the vehicle is in parking status, controlling the headrest to activate the support function.

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

[0018] In the aforementioned technical solution, this application further proposes determining whether to activate the massage or support function of the seat headrest by judging whether the passenger is fatigued, whether they are the driver, and whether the vehicle is in motion. This allows the seat headrest massage function to be activated when the passenger is the driver, is fatigued, and the vehicle is in motion, to stimulate the driver to stay alert and prevent fatigued driving that could compromise driving safety. Furthermore, the seat headrest support function can be activated when the passenger is not the driver but is fatigued, providing a more comfortable resting environment for the passenger.

[0019] In combination with the first aspect and the above implementation, in some possible implementations, the method further includes: when it is detected that the passenger on the vehicle seat has left, and the vehicle seat is a rear seat behind the driver's seat, controlling the headrest of the seat to adjust back to the initial headrest height, the initial headrest height being the height at which the headrest cannot be adjusted downwards.

[0020] In the above-mentioned technical solution, this application also proposes that when the passenger in the vehicle seat leaves and the vehicle seat is the rear seat behind the driver's seat, the headrest of the seat can be adjusted back to the lowest height in a timely manner to avoid obstructing the driver's rear view and improve driving safety.

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

[0022] In the aforementioned technical solution, this application also proposes that when the rear window is severely obstructed by the seat headrest, the rear view of the vehicle can be displayed on the screen based on the surround view video data collected by the surround view camera, so as to make up for the problem that the driver cannot see the rear of the vehicle through the rear window.

[0023] Secondly, a headrest adjustment device for a vehicle seat is provided, wherein the vehicle seat is equipped with a headrest that has a height adjustment function, and the device includes:

[0024] The first acquisition module is used to acquire the head position of the passenger when the presence of a passenger on the vehicle seat is detected. The head position refers to the distance between the upper surface of the vehicle seat and the head of the passenger.

[0025] The second acquisition module is used to acquire the 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 headrest of the seat to be adjusted to a target headrest height based on the tilt angle and the head position of the object. The target headrest height is negatively correlated with the backrest tilt angle and positively correlated with the head position of the object.

[0027] In conjunction with the second aspect, in some possible implementations, the first control module is further configured to: determine the initial adjustment height of the seat headrest based on the head position of the object; determine a correction distance based on the unit adjustment distance and the tilt angle, wherein 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; and control the seat headrest to adjust to the target headrest height.

[0028] In conjunction with the second aspect and the above implementation methods, in some possible implementation methods, the first acquisition module is further configured to: acquire the sitting posture information and gender information of the passenger through in-vehicle images captured by the in-vehicle camera; perform object matching based on the sitting posture information and the gender information to obtain a target object matching the passenger, the target object being 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.

[0029] In conjunction with the second aspect and the above-described implementations, in some possible implementations, the headrest has headrest side wings, and the headrest has massage and support functions; the device further includes: a second control module, used to control the headrest to activate the massage function when fatigue behavior is detected in the passenger and the passenger is the driver; a third control module, used to control the headrest to activate the support function when fatigue behavior is detected in the passenger and the passenger is not the driver, wherein the headrest side wings of the headrest are in an extended state when the support function is activated.

[0030] In conjunction with the second aspect and the above implementation methods, in some possible implementation methods, the second control module is further configured to: when the fatigue behavior of the passenger is detected and the passenger is the driver, acquire the vehicle status of the vehicle, the vehicle status including driving status or parking status; when the vehicle is in the driving status, control the headrest of the seat to activate the massage function; the device further includes: a fourth control module, configured to control the headrest of the seat to activate the support function when the vehicle is in the parking status.

[0031] In conjunction with the second aspect and the above-described implementation, in some possible implementations, the device further includes: a fifth control module, used to control the headrest to turn off the support function or the massage function when it is detected that the passenger does not exhibit the fatigue behavior.

[0032] In conjunction with the second aspect and the above implementation, in some possible implementations, the device further includes: a sixth control module, used to control the headrest of the vehicle seat to adjust back to its initial headrest height when it is detected that the passenger on the vehicle seat has left and the vehicle seat is the rear seat of the driver's seat. The initial headrest height refers to the position where the headrest cannot be adjusted downwards.

[0033] In conjunction with the second aspect and the above-described implementations, in some possible implementations, the device further includes: a third acquisition module, used to acquire the occlusion rate of the rear window after the headrest of the vehicle seat is adjusted to the target headrest height when the vehicle seat is a rear seat of the driver's seat; a fourth acquisition module, used to acquire 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, used to display the rear image of the vehicle on the vehicle display screen based on the surround-view video data.

[0034] Thirdly, a vehicle is provided, including a memory and a processor. The memory stores executable program code, and the processor retrieves and runs the executable program code from the memory, causing the vehicle to perform the seat headrest adjustment method of the vehicle seat as described in the first aspect or any possible implementation thereof.

[0035] Fourthly, a computer program product is provided, comprising: computer program code, which, when executed on a computer, causes the computer to perform the vehicle seat headrest adjustment method as described in the first aspect or any possible implementation thereof.

[0036] Fifthly, a computer-readable storage medium is provided, which stores computer program code that, when executed on a computer, causes the computer to perform the vehicle seat headrest adjustment method described in the first aspect or any possible implementation thereof. Attached Figure Description

[0037] Figure 1 This is a schematic flowchart illustrating a method for adjusting the headrest of a vehicle seat according to an embodiment of this application;

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

[0039] Figure 3 This is a schematic flowchart illustrating another method for adjusting the headrest of a vehicle seat provided in an embodiment of this application;

[0040] Figure 4 This is a schematic diagram illustrating the relationship between the initial adjustment height and the target headrest height, provided in an embodiment of this application.

[0041] Figure 5 This is a schematic flowchart illustrating another method for adjusting the headrest of a vehicle seat provided in an embodiment of this application;

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

[0043] Figure 7 This is a schematic flowchart illustrating another method for adjusting the headrest of a vehicle seat provided in an embodiment of this application;

[0044] Figure 8 This is a schematic diagram of the structure of a vehicle seat headrest adjustment device provided in an embodiment of this application;

[0045] Figure 9 This is a schematic diagram of the structure of a vehicle provided in an embodiment of this application. Detailed Implementation

[0046] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0047] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting 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 that feature.

[0048] Figure 1 This is a schematic flowchart illustrating a method for adjusting the headrest of a vehicle seat according to an embodiment of this application. It should be understood that this method can be applied to vehicles.

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

[0050] Step 101: If a passenger is detected sitting on the vehicle seat, obtain the head position of the passenger when sitting on the vehicle seat. The head position refers to the distance between the upper surface of the vehicle seat and the head of the passenger.

[0051] In the vehicle provided in this application embodiment, each vehicle seat is equipped with a headrest, and the headrest has a height adjustment function. The headrest height refers to the distance between the upper surface of the vehicle seat and the upper surface of the headrest, and the upper surface of the vehicle seat is the surface of the seat cushion. Figure 2 This is a schematic structural diagram of a vehicle seat provided in an embodiment of this application. Figure 2 As shown, the vehicle seat 200 has a headrest 201 mounted on its backrest. The headrest 201's height is adjusted via a telescopic rod 202. This headrest height is the distance between the upper surface of the vehicle seat (seat cushion surface) and the upper surface of the headrest (e.g.,...). Figure 2 (distance A in the equation).

[0052] During the adjustment of the headrest of a vehicle seat, there are two position states: the active position and the inactive position. The inactive position is when the headrest is at its lowest height and cannot be adjusted downwards. The active position is any adjustable and lockable position other than the inactive position.

[0053] In the event of emergency braking or a rear-end collision, if the headrest is not in its active position, it may compress the neck due to the immense impact pressure generated by the collision, thus threatening the safety of the driver and passengers. Therefore, this application provides an adjustable headrest that can be adjusted in real time to a height corresponding to the driver's head position. This not only cushions the immense impact pressure generated by the collision but also provides comfortable head support for the driver and passengers during normal driving.

[0054] Because different passengers (i.e., users) have different heights, genders, and sitting postures, the required headrest height also varies depending on the passenger. Therefore, in one possible implementation, when a passenger is detected on a vehicle seat, the position of the passenger's head can be obtained first. This allows the headrest height to be determined based on the passenger's head position to accommodate them.

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

[0056] To obtain the head position of passengers, cameras are deployed on the vehicle to capture images inside the vehicle and obtain information such as the passenger's seating position, height, posture, and gender.

[0057] Optionally, to detect whether a passenger is in a vehicle seat, a seat sensor is installed on the vehicle seat to detect the presence of a passenger. For example, this seat sensor can be a pressure sensor, which can detect the force applied to the seat and determine the presence of a passenger when the detected force exceeds a pressure threshold. Alternatively, an interior camera can be used to capture images of the vehicle's interior to determine the presence of a passenger.

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

[0059] Since the headrest is located on the seat back, and the seat back can be adjusted forward and backward, this adjustment can affect the headrest height adjustment. For example, at the same head position, with the seat back in its initial position, the head position can be aligned with the headrest height. If the seat back is adjusted backward at a preset angle, the headrest height needs to be lowered to accommodate the head position when leaning against the backrest. Therefore, in one possible implementation, if the vehicle seat back is detected not being in its initial angle position, the vehicle can obtain the seat back's tilt angle relative to the initial angle position for subsequent headrest height adjustment.

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

[0061] Furthermore, the vehicle can determine the target headrest height by combining the relationship between the seat back tilt angle and the headrest height – the target headrest height is negatively correlated with the backrest tilt angle, and the relationship between the object's head position and the headrest height – the target headrest height is negatively correlated with the backrest tilt angle, and then control the headrest to be adjusted to the target headrest height.

[0062] In summary, this application provides a method for adjusting the headrest of a vehicle seat: by acquiring the head position of the passenger sitting in the vehicle seat and the tilt angle of the vehicle seat back, the headrest height is adjusted accordingly. This ensures that the headrest is adapted to the head position of the passenger sitting in the vehicle seat and resting against the seat back, providing more comfortable head support for the driver and passengers during driving. Furthermore, it can buffer the enormous impact pressure generated by a collision, reducing injuries to the head and neck of the driver and passengers caused by emergency braking or rear-end collisions during driving, further improving driving safety.

[0063] Figure 3 This is a schematic flowchart illustrating another method for adjusting the headrest of a vehicle seat according to an embodiment of this application. It should be understood that this method can be applied to vehicles.

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

[0065] Step 301: If a passenger is detected on a vehicle seat, obtain the passenger's posture and gender information from the in-vehicle images captured by the in-vehicle camera.

[0066] When a passenger is detected in a vehicle seat, the vehicle can control the in-vehicle camera to capture images inside the vehicle and perform image recognition on the images to obtain the vehicle seat where each passenger is sitting, as well as the passenger information, which includes at least posture information, gender information, and height information; and then, based on the passenger information, the head position of the passenger can be analyzed.

[0067] Step 302: Based on the sitting posture information and gender information, perform object matching to obtain the target object that matches the passenger. 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 models are created in advance, and each passenger model has associated gender information, sitting posture information, and head position. This allows the vehicle to perform object matching based on the obtained sitting posture and gender information during the application process, so as to obtain the target object that matches the passenger and thus determine the head position of the object.

[0069] Optionally, different seating postures and genders of passengers can be simulated in advance to obtain the head position associated with the passenger model.

[0070] Step 303: Determine the head position associated with the target object as the head position of the passenger when sitting in the vehicle seat.

[0071] The vehicle will associate the head position with the target object, and determine the head position of the object sitting in the vehicle seat.

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

[0073] The implementation method of step 304 can refer to step 102, and will not be repeated here in this embodiment.

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

[0075] With the vehicle seat backrest in its initial position, the head position is the desired headrest height. However, when the seat backrest is not in its initial position, for example, after tilting back at a certain angle, adjusting the headrest based on the head position may not ensure it's positioned precisely at the passenger's head. Therefore, when adjusting the headrest based on the head position and seat backrest tilt angle, the initial headrest height must first be determined based on the head position, and then adjusted according to the tilt angle to obtain the final target headrest height.

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

[0077] The vehicle stores the unit adjustment distance required for the headrest to be lowered for each unit tilt angle of the seat back. This allows the vehicle to determine a correction distance based on the unit adjustment distance and tilt angle to adjust the initial adjustment height of the headrest.

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

[0079] Subtract the correction distance from the initial adjusted height to obtain the target headrest height.

[0080] Figure 4 This is a schematic diagram illustrating the relationship between the initial adjustment height and the target headrest height, provided in an embodiment of this application. If the head position of the passenger is as shown in A in the diagram, the initial headrest height determined based on the head position is also A. However, due to the tilt angle D of the seat back, the correction distance corresponding to tilt angle D is B. Therefore, the target headrest height at this point can be the position where AB = C. The headrest is then adjusted to height C.

[0081] Step 308: Adjust the seat headrest to the target headrest height.

[0082] After determining the target headrest height, the vehicle can obtain the current headrest height and then determine the headrest height adjustment amount based on the difference between the target headrest height and the current headrest height, so as to control the headrest to be adjusted to the target headrest height.

[0083] Step 309: If the passenger in the vehicle seat leaves the vehicle and the vehicle seat is the rear seat behind the driver's seat, control the headrest to adjust back to the initial headrest height.

[0084] The initial headrest height refers to the position where the seat headrest cannot be adjusted downwards. When a passenger leaves the vehicle, and the seat is located behind the driver's seat, the headrest can be adjusted back to its initial height to avoid obstructing the driver's rearward visibility due to an excessively high headrest.

[0085] In this embodiment, by acquiring the passenger's posture and gender information, a target object similar to the passenger is matched to determine the passenger's head position. This provides a feasible implementation method for determining the head position and improves the accuracy of the determination. Furthermore, the headrest height determination method, which corrects the initial adjustment height determined based on the head position according to the tilt angle, avoids the problem of adjusting the headrest height according to the head position after the seat back is adjusted, which could prevent the headrest from being directly aligned with the passenger's head position. This improves the accuracy of the headrest height adjustment.

[0086] In one possible application scenario, in addition to providing neck or back support and cushioning for drivers and passengers, the headrest can also provide side support when passengers need to sleep, providing a more comfortable sleeping experience while traveling.

[0087] Figure 5 This is a schematic flowchart illustrating another method for adjusting the headrest of a vehicle seat according to an embodiment of this application. It should be understood that this method can be applied to vehicles.

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

[0089] Step 501: If a passenger is detected sitting on the vehicle seat, obtain the head position of the passenger when sitting on the vehicle seat. The head position refers to the distance between the upper surface of the vehicle seat and the head of the passenger.

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

[0091] Step 503: Based on the tilt angle and the object's head position, control the seat headrest to adjust to the target headrest height.

[0092] The implementation methods for steps 501 to 503 can be referred to the above embodiments, and will not be repeated here.

[0093] Step 504: If fatigue behavior is detected in the passenger and the passenger is the driver, control the headrest of the seat to activate the massage function.

[0094] The seat headrest features side wings located on both the left and right sides. These side wings have an open and a closed state. When the side wings are closed, the headrest only provides support behind the head. When the side wings are open, the headrest provides support from both sides of the head. Optionally, the passenger can manually open the side wings using a control; alternatively, they can be opened via voice command.

[0095] Optionally, in addition to providing support for the rear and sides, the headrest also features a massage function. Optionally, passengers can manually activate the massage function by triggering a control; alternatively, they can control the massage function via voice command.

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

[0097] Since passengers may extend the headrest wings for sleep support when fatigued, or require massage stimulation to stay awake when fatigued but needing to stay alert, the need for alertness or sleep can be determined by identifying whether the passenger is a passenger or a driver. Therefore, in one possible implementation, when the vehicle detects fatigue in a passenger, it further determines whether the passenger is a driver or a non-driver. If the passenger is a driver, to avoid safety accidents caused by fatigued driving, the vehicle automatically activates the massage function of the headrest to stimulate the passenger's head and neck and keep them awake.

[0098] To detect fatigue behavior in passengers, vehicles can use in-vehicle cameras to capture images inside the vehicle. If the images reveal image features corresponding to fatigued actions, then the passenger is determined to be fatigued. For example, fatigued actions may include yawning, frequent blinking, frequent eye rubbing, head bobbing, and closing the eyes.

[0099] For passengers who might be resting in the driver's seat, automatically activating the massage function could disrupt their rest. Therefore, when deciding whether to activate the massage function, in addition to considering whether the passenger is the driver, the current vehicle status also needs to be taken into account. In an exemplary example, step 504 could also include steps 504A and 504B.

[0100] Step 504A: If fatigue behavior is detected in the passenger and the passenger is the driver, the vehicle status is obtained, including driving status or parking status.

[0101] If the vehicle detects fatigue in a passenger who is also the driver, the vehicle's status can be further assessed to determine whether headrest stimulation is needed to keep the passenger alert. This vehicle status can include whether the vehicle is in motion or parked.

[0102] One method for obtaining vehicle status is by detecting the vehicle's speed. If the speed is higher than a speed threshold, the vehicle is determined to be in motion; if the speed is lower than the speed threshold, the vehicle is determined to be parked. For example, the speed threshold could be 2 km / h.

[0103] Step 504B: While the vehicle is in motion, control the headrest to activate the massage function.

[0104] If the vehicle is in motion and the passenger's fatigue could lead to a traffic accident, the vehicle can activate the massage function on the headrests to help keep the passenger alert.

[0105] Optionally, when the vehicle is parked, indicating that the driver is currently resting, the headrest support function is activated to allow the driver to rest better. When the support function is activated, the headrest side wings are unfolded to provide support for the driver from both sides, preventing the driver's head from slipping and providing a better sleeping environment.

[0106] Step 505: If fatigue behavior is detected in the passenger and the passenger is not the driver, the headrest is controlled to activate the support function. When the support function is activated, the headrest side wings are in the unfolded state.

[0107] For situations where the passenger is not the driver, their waking status does not affect vehicle safety. Therefore, in one possible implementation, if the vehicle detects fatigue in a passenger who is not the driver, the headrest support function can be activated directly. With the support function activated, the headrest side wings are extended to provide support for the passenger from both sides, preventing the passenger's head from slipping and providing a better sleeping experience while driving.

[0108] Step 506: If it is detected that the passenger is not fatigued, control the headrest to turn off the support or massage function.

[0109] Optionally, if the vehicle detects that the passenger is not fatigued, in order to avoid the seat headrest's support or massage functions restricting or affecting the passenger's driving or other behaviors, the vehicle may control the seat headrest to turn off its support or massage functions.

[0110] Figure 6 This is a schematic diagram illustrating the headrest adjustment process of a vehicle seat according to an embodiment of this application. Figure 6As shown, taking the rear seats as an example, after a passenger gets in and sits down, the seat sensor 601 is activated to detect that someone is sitting in the seat and transmits the result to the headrest sensor 602. The headrest sensor 602 transmits the signal to the in-vehicle camera, which collects information such as the passenger's position, height, posture, and gender, and feeds this 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 based on the signal detected by the headrest sensor 602. The fatigue detection sensor 604 receives the signal from the headrest sensor 602 and then... The system activates the in-vehicle camera and microphone to detect passengers. Upon detecting drowsiness (yawning, dozing, etc.), a signal is transmitted to the headrest sensor 602. The headrest sensor 602 then activates the intelligent assistant, which inquires whether the passenger wants to rest (whether they need music for sleep) or relaxation / refreshment (headrest massage). The intelligent assistant relays the passenger's feedback to the headrest sensor 602. The headrest sensor 602 transmits a signal to the headrest controller. If the signal is signal 1 (wanting to rest), the headrest side wings open to provide support, and the headrest speaker turns on to play sleep-inducing music. If the signal is signal 2 (refreshment / refreshment), the headrest massage is activated to provide head massage and help the passenger wake up. When the fatigue detection sensor 604 detects that the passenger has woken up, the headrest side wings retract. Optionally, when the seat sensor 601 detects that the passenger has left, the seat headrest lowers to its lowest position.

[0111] In this embodiment, the system determines whether to activate the massage or support function of the headrest by judging whether the passenger is fatigued, whether they are the driver, and whether the vehicle is in motion. This allows the headrest's massage function to be activated when the passenger is the driver, is fatigued, and the vehicle is in motion, to stimulate the driver to stay alert and prevent drowsy driving that could compromise driving safety. Furthermore, the headrest's support function can be activated when the passenger is not the driver but is fatigued, providing a more comfortable resting environment for the passenger.

[0112] If the vehicle seat is the seat behind the driver's seat, an excessively high headrest may obstruct the driver's rearward view, meaning they cannot see what's behind the vehicle through the rear window, potentially posing a driving risk.

[0113] Figure 7 This is a schematic flowchart illustrating another method for adjusting the headrest of a vehicle seat according to an embodiment of this application. It should be understood that this method can be applied to vehicles.

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

[0115] Step 701: If a passenger is detected sitting on the vehicle seat, obtain the head position of the passenger when sitting on the vehicle seat. The head position refers to the distance between the upper surface of the vehicle seat and the head of the passenger.

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

[0117] Step 703: Based on the tilt angle and the object's head position, control the seat headrest to adjust to the target headrest height.

[0118] The implementation methods for steps 701 to 703 can be referred to the above embodiments, and will not be repeated here.

[0119] Step 704: With the vehicle seat being the rear seat of the driver's seat, obtain the obstruction rate of the rear window after the seat headrest is adjusted to the target headrest height.

[0120] In a vehicle where the rear seat is the driver's seat, adjusting the headrest height may obstruct the driver's rearward view. Therefore, to meet the headrest comfort requirements of rear passengers while also ensuring the driver's rearward view, one possible implementation involves acquiring the degree of rear window obstruction by the headrest after adjustment to a target height, and then determining whether other methods are needed to provide the driver with a rearward view.

[0121] Alternatively, the occlusion rate can be determined by the ratio of the target headrest height to the headrest height of the headrest seat when the rear window is fully obscured.

[0122] Step 705: If the occlusion rate is greater than the threshold, obtain surround view video data of the rear of the vehicle through the surround view camera.

[0123] If the obstruction rate is significant and exceeds a threshold, it means the driver cannot see behind the vehicle through the rear window, and other methods are needed to provide the driver with a rear view image. A surround-view camera can be installed at the rear of the vehicle, allowing the vehicle to acquire surround-view video data and then display this data to provide the driver with a rear view image.

[0124] For example, the threshold could be 50%.

[0125] Optionally, if the occlusion rate is low and below a threshold, it means that the driver can still see behind the vehicle through the rear window, and there is no need to provide the driver with a rear view of the vehicle through other means.

[0126] Step 706: Display the rear view 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 its display screen, allowing the vehicle to show the rear view without the driver having to look behind the vehicle through the rear window.

[0128] In this embodiment, when the seat headrest severely obstructs the rear window, the rear view of the vehicle can be displayed on the screen based on the surround view video data collected by the surround view camera, so as to make up for the problem that the driver cannot see the rear of the vehicle through the rear window.

[0129] Figure 8 This is a schematic diagram of a vehicle seat headrest adjustment device according to an embodiment of this application. The vehicle seat is equipped with a headrest, which has a height adjustment function.

[0130] For example, such as 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 presence of a passenger on the vehicle seat is detected. The head position refers to the distance between the upper surface of the vehicle seat and the head of the passenger.

[0132] The second acquisition module 802 is used to acquire the 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 headrest of the seat to adjust to a target headrest height based on the tilt angle and the head position of the object. The target headrest height is negatively correlated with the backrest tilt angle and positively correlated with the head position of the object.

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

[0135] In one possible implementation, the first acquisition module 801 is further configured to: acquire the sitting posture information and gender information of the passenger through in-vehicle images captured by the in-vehicle camera; perform object matching based on the sitting posture information and gender information to obtain a target object that matches the passenger, the target object being 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 headrest has headrest side wings and provides massage and support functions. The device further includes: a second control module for controlling the headrest to activate the massage function when fatigue is detected in the passenger and the passenger is the driver; and a third control module for controlling the headrest to activate the support function when fatigue is detected in the passenger and the passenger is not the driver, wherein the headrest side wings are in an extended state when the support function is activated.

[0137] In one possible implementation, the second control module is further configured to: when the fatigue behavior of the passenger is detected and the passenger is the driver, acquire the vehicle status, which includes driving status or parking status; when the vehicle is in driving status, control the headrest to activate the massage function; the device further includes: a fourth control module configured to control the headrest to activate the support function when the vehicle is in parking status.

[0138] In one possible implementation, the device further includes a fifth control module, used to control the headrest to turn off the support function or the massage function when the fatigue behavior of the passenger is detected to be absent.

[0139] In one possible implementation, the device further includes a sixth control module, configured to control the headrest to adjust back to its initial headrest height when it is detected that the passenger on the vehicle seat has left and the vehicle seat is a rear seat behind the driver's seat. The initial headrest height refers to the point at which the headrest cannot be adjusted downwards.

[0140] In one possible implementation, the device further includes: a third acquisition module, used to acquire the occlusion rate of the rear window after the headrest of the vehicle seat is adjusted to the target headrest height when the rear seat is the driver's seat; a fourth acquisition module, used to acquire 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, used to display the rear image of the vehicle on the vehicle display screen based on the surround view video data.

[0141] In summary, this application provides a method for adjusting the headrest of a vehicle seat: by acquiring the head position of the passenger sitting in the vehicle seat and the tilt angle of the vehicle seat back, the headrest height is adjusted accordingly. This ensures that the headrest is adapted to the head position of the passenger sitting in the vehicle seat and resting against the seat back, providing more comfortable head support for the driver and passengers during driving. Furthermore, it can buffer the enormous impact pressure generated by a collision, reducing injuries to the head and neck of the driver and passengers caused by emergency braking or rear-end collisions during driving, further improving driving safety.

[0142] Figure 9 This is a schematic diagram of the structure of a vehicle provided in an embodiment of this application.

[0143] For example, such as Figure 9 As shown, the vehicle 900 includes a memory 901 and a processor 902. The memory 901 stores 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 the headrest of a vehicle seat.

[0144] Furthermore, this application also protects an apparatus that may include a memory and a processor, wherein the memory stores executable program code, and the processor is used to call and execute the executable program code to perform a vehicle seat headrest adjustment method provided in this application.

[0145] This embodiment can divide the device into functional modules based on the above method example. For example, each module can correspond to a separate function, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware. It should be noted that the module division in this embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods.

[0146] When each functional module is divided according to its corresponding function, the device may further include a first acquisition module, a second acquisition module, a first control module, etc. It should be noted that all relevant content of each step involved in the above method embodiments can be referenced to the functional description of the corresponding functional module, and will not be repeated here.

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

[0148] When using 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 can be used to control and manage the vehicle's movements. The storage module can be used to support the vehicle in executing program code, etc.

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

[0150] In addition, the device provided in the embodiments of this application may specifically be a chip, component or module. The chip may include a connected processor and a memory. The memory is used to store instructions. When the processor calls and executes the instructions, the chip can execute a vehicle seat headrest adjustment method provided in the above embodiments.

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

[0152] This embodiment also provides a computer program product that, when run on a computer, causes the computer to perform the aforementioned related steps to implement a vehicle seat headrest adjustment method provided in the above embodiment.

[0153] In this embodiment, the device, computer-readable storage medium, computer program product, or chip are all used to execute the corresponding methods provided above. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0154] Through the above description of the embodiments, those skilled in the art will understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above 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 this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0156] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for adjusting the headrest of a vehicle seat, characterized in that, The vehicle seats are equipped with headrests, and the headrests have height adjustment functions. The method includes: If a passenger is detected sitting on the vehicle seat, the head position of the passenger is obtained when the passenger is sitting on the vehicle seat. The head position refers to the distance between the upper surface of the vehicle seat and the head of the passenger. If it is detected that the seat back of the vehicle seat is not in the initial angle position, the tilt angle of the seat back relative to the initial angle position is obtained; Based on the tilt angle and the object's head position, the seat headrest is controlled to adjust to a target headrest height. The target headrest height is negatively correlated with the tilt angle of the seat back and positively correlated with the object's head position. The step of controlling the seat headrest to adjust to the target headrest height based on the tilt angle and the object's head position includes: Based on the head position of the object, determine the initial adjustment height of the seat headrest; The correction distance is determined based on the unit adjustment distance and the tilt angle, wherein the unit adjustment distance refers to the adjustment distance corresponding to the unit tilt angle; The initial adjustment height is corrected based on the corrected distance to determine the target headrest height; Control the adjustment of the seat headrest to the target headrest height.

2. The method according to claim 1, characterized in that, The step of obtaining the head position of the passenger when seated in the vehicle includes: The vehicle's in-vehicle images, captured by the in-vehicle camera, provide information on the passenger's posture and gender. Based on the sitting posture information and the gender information, object matching is performed to obtain a target object that matches the passenger. The target object is a pre-established passenger object model. The head position associated with the target object is determined as the head position of the passenger when the passenger is sitting in the vehicle seat.

3. The method according to claim 1 or 2, characterized in that, The seat headrest has headrest side wings and has massage and support functions; The method further includes: If fatigue is detected in the passenger and the passenger is the driver, the massage function of the headrest is activated. If the passenger is detected to be exhibiting fatigue behavior and is not driving, the headrest is controlled to activate its support function. When the support function is activated, the headrest side wings are in an extended state.

4. The method according to claim 3, characterized in that, The step of controlling the headrest to activate the massage function when fatigue is detected in the passenger, and the passenger is the driver, includes: If the passenger is detected to be exhibiting fatigue behavior and the passenger is the driver, the vehicle status is obtained, including driving status or parking status. When the vehicle is in the driving state, control the headrest of the seat to activate the massage function; The method further includes: When the vehicle is in the parked state, the headrest of the seat is controlled to activate the support function.

5. The method according to claim 3, characterized in that, The method further includes: If the passenger is found to be not exhibiting fatigue behavior, the headrest is controlled to disable the support function or the massage function.

6. The method according to claim 1 or 2, characterized in that, The method further includes: If the passenger in the vehicle seat leaves the vehicle and the vehicle seat is the rear seat behind the driver's seat, the headrest is adjusted back to its initial headrest height, where the headrest cannot be adjusted downwards.

7. The method according to claim 1 or 2, characterized in that, The method further includes: In the case where the vehicle seat is a rear seat with the driver's seat, the obstruction rate of the rear window by the seat headrest after it is adjusted to the target headrest height is obtained; When the occlusion rate is greater than a threshold, surround view video data of the area behind the vehicle is acquired through a surround view camera; The rear view of the vehicle is displayed on the vehicle's screen based on the surround view video data.

8. A headrest adjustment device for a vehicle seat, characterized in that, The vehicle seats are equipped with headrests, which have height adjustment functions. The device includes: The first acquisition module is used to acquire the head position of the passenger when the presence of a passenger on the vehicle seat is detected. The head position refers to the distance between the upper surface of the vehicle seat and the head of the passenger. The second acquisition module is used to acquire the 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. 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 object's head position, wherein the target headrest height is negatively correlated with the tilt angle of the seat back and positively correlated with the object's head position; determine the initial adjustment height of the seat headrest based on the object's head position; determine a correction distance based on a unit adjustment distance and the tilt angle, wherein the unit adjustment distance refers to the adjustment distance corresponding to a unit tilt angle; correct the initial adjustment height based on the correction distance to determine the target headrest height; and control the seat headrest to adjust to the target headrest height.

9. A vehicle, characterized in that, The vehicles include: Memory, used to store executable program code; A processor is configured to call and run the executable program code from the memory, causing the vehicle to perform the seat headrest adjustment method for a vehicle seat as described in any one of claims 1 to 7.

Images