Method, device and vehicle for switching playback images

Abstract

The present application provides a method, device and vehicle for switching playback screens, and relates to the field of vehicle technology. In the method, when the vehicle is in a driving state and the user in the vehicle is watching the target screen through the vehicle screen, if the user suffers from motion sickness, the vehicle in the method can switch the target screen to the second vehicle screen for the user to watch when the vehicle screen currently used by the user (the first vehicle screen) is the target vehicle screen. Compared with the first vehicle screen, the distance between the second vehicle screen and the user is farther, which can change the focus of the user's eyes to a certain extent, so that the visually perceived playback screen is closer to the visual effect of the eyes looking at the distant view outside the window during normal driving. In this way, the conflict between the motion state perceived by the user's body and the visually perceived position information will be reduced, which can alleviate the user's motion sickness symptoms and meet the user's viewing needs for the vehicle screen in the car.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and more specifically, to a method, device and vehicle for switching playback screens in the field of vehicle technology. Background Art

[0002] With the continuous advancement of vehicle technology and the improvement of people's living standards, the audience of vehicles is becoming more and more extensive. However, there are also more and more vehicle-related problems, including motion sickness of users during driving.

[0003] In some scenarios, users need to work or entertain through the in-vehicle screen while the vehicle is in motion. However, looking at the in-vehicle screen for a long time and at a close distance can easily cause motion sickness in users.

[0004] Therefore, there is an urgent need for a method for switching playback images to meet the user's viewing needs for the in-car screen and alleviate the user's motion sickness. Summary of the invention

[0005] The present application provides a method, device and vehicle for switching playback screens, which can meet the user's viewing needs for an in-vehicle screen in the car and alleviate the user's motion sickness symptoms.

[0006] In a first aspect, a method for switching playback screens is provided, the method comprising: when a vehicle is in a driving state and a user in the vehicle is watching a target screen through a first vehicle-mounted screen, determining whether the user is in a motion sickness state; when the user is in a motion sickness state, determining whether the first vehicle-mounted screen is a target vehicle-mounted screen, and the distance between the target vehicle-mounted screen and the user is less than a first preset distance; when the first vehicle-mounted screen is the target vehicle-mounted screen, switching the target screen to a second vehicle-mounted screen for the user to watch, and the distance between the second vehicle-mounted screen and the user is greater than the first preset distance.

[0007] In the above technical solution, when the vehicle is in motion and the user in the vehicle must watch the target picture through the vehicle screen, if the user suffers from motion sickness, the vehicle in the method can switch the target picture to the second vehicle screen for the user to watch when the vehicle screen currently used by the user (the first vehicle screen) is the target vehicle screen. Compared with the first vehicle screen, the distance between the second vehicle screen and the user is farther, which can change the focus of the user's eyes to a certain extent, so that the visually perceived playback picture is closer to the visual effect of the eyes looking at the distant view outside the window during normal driving. In this way, the conflict between the motion state perceived by the user's body and the visually perceived position information will be reduced, which can alleviate the user's motion sickness symptoms and meet the user's viewing needs for the vehicle screen in the car.

[0008] In combination with the first aspect, in some possible implementations, the method for determining that the user is in a motion sickness state includes at least one of the following: when the user triggers the anti-motion sickness mode in the vehicle, determining that the user is in a motion sickness state; when the vehicle's driving stability is higher than or equal to a preset stability and the user's head lowering times are greater than a first preset number of times, determining that the user is in a motion sickness state; when the stability is lower than the preset stability and the user's eyes are closed for a duration greater than a first preset duration, determining that the user is in a motion sickness state; when the vehicle brakes for a duration greater than a second preset number of times and the user's mouth is open for a duration greater than a second preset time, determining that the user is in a motion sickness state; when the user's mouth is open and the user's eyes are closed, determining that the user is in a motion sickness state.

[0009] In the above technical solution, the vehicle determines that the user is in a state of motion sickness through a variety of methods, which can increase the accuracy of the user's motion sickness state. Specifically, the user is determined to be in a state of motion sickness by triggering the anti-motion sickness mode in the vehicle. This is a way for the user to actively turn on the anti-motion sickness mode, which can more accurately and directly determine that the user is in a state of motion sickness. Through the first combination method between the vehicle state and the user state, the error in determining the state of motion sickness by a single factor can be reduced. Furthermore, the first combination method takes into account the stability of the vehicle during driving and the number of brakes of the vehicle. This is because low stability and high number of brakes will aggravate the user's discomfort. There is a large difference between the motion state perceived by the user's body and the position information perceived by the vision, which will cause the user to get motion sickness. The user state can intuitively determine whether the user is motion sickness. Therefore, the first combination method can more accurately determine that the user is in a state of motion sickness. Through the second combination method between the user's eye state and mouth state, it is possible to indirectly infer whether the user is motion sickness and accurately determine that the user is in a state of motion sickness.

[0010] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the target screen is switched to the second vehicle-mounted screen for the user to watch, including: obtaining the initial playback parameters of the target screen before the target screen is switched, the parameter type of the initial playback parameters being related to the user's motion sickness; adjusting the initial playback parameters based on the ambient brightness inside the vehicle and the usage time of the first vehicle-mounted screen to obtain the target playback parameters; and switching the target screen with the target playback parameters to the second vehicle-mounted screen for the user to watch.

[0011] In the above technical solution, the vehicle adjusts the initial playback parameters of the target image based on the ambient brightness inside the vehicle and the usage time of the first vehicle screen. This takes into account the combined impact of ambient brightness and screen usage time on the target image, and can obtain image quality parameters (target playback parameters) that alleviate motion sickness. For example, when the ambient brightness is high and the screen usage time is long, the screen brightness is lowered. In this way, after the target image is switched to the second vehicle screen for viewing by the user with the target playback parameters, it can not only change the user's viewing distance of the target image, but also affect the coordination between the body's perceived motion state and the visually perceived position information, prompting the eyeballs to refocus, thereby improving the user's motion sickness symptoms.

[0012] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the initial playback parameters are adjusted based on the ambient brightness inside the vehicle and the usage time of the first vehicle-mounted screen to obtain the target playback parameters, including: determining a first deviation amplitude of the ambient brightness relative to the preset ambient brightness, and a second deviation amplitude of the usage time relative to a third preset time; determining a first product between the first deviation amplitude and the preset playback parameter, and determining a second product between the second deviation amplitude and the preset playback parameter, the preset playback parameter corresponding to the preset ambient brightness and the third preset time; based on the ambient brightness, the usage time, the first product and the second product, the initial playback parameters are adjusted to obtain the target playback parameters.

[0013] In the above technical solution, the preset playback parameters are the most eye-friendly picture playback parameters for users when the ambient brightness inside the vehicle is the preset ambient brightness and the usage time of the first vehicle-mounted screen is the third preset time. The preset playback parameters can prevent the user from motion sickness to the greatest extent. Therefore, the vehicle in the method determines the deviation amplitude between the current in-vehicle ambient brightness and the preset ambient brightness, as well as the deviation amplitude between the screen usage time and the third preset time, and based on these two deviation amplitudes and the preset playback parameters, determines the adjustment amount for adjusting the initial playback parameters of the target picture. In addition, when adjusting the initial playback parameters, it is necessary to consider the issue of increasing or decreasing the initial playback parameters. Therefore, the vehicle in the method ultimately adjusts the initial playback parameters based on the ambient brightness, usage time and adjustment amount. This can obtain the optimal playback parameters that alleviate the user's current motion sickness state and meet the user's needs to continue watching the target picture.

[0014] In combination with the first aspect and the above-mentioned implementation manner, in some possible implementation manners, the initial playback parameter includes an initial screen brightness, the preset playback parameter includes a preset screen brightness, and based on the ambient brightness, the usage time, the first product, and the second product, the initial playback parameter is adjusted to obtain a target playback parameter, including: when the ambient brightness is greater than the preset ambient brightness and the usage time is less than the third preset time, the sum of the initial screen brightness, the first product, and the second product is determined as the target screen brightness in the target playback parameter; when the ambient brightness is less than or equal to the preset ambient brightness and the usage time is When the usage time is greater than or equal to the third preset time, the difference between the initial screen brightness, the first product and the second product is determined as the target screen brightness; when the ambient brightness is greater than the preset ambient brightness and the usage time is greater than or equal to the third preset time, the sum of the initial screen brightness and the first product and the difference between the first product and the second product are determined as the target screen brightness; when the ambient brightness is less than or equal to the preset ambient brightness and the usage time is less than the third preset time, the difference between the initial screen brightness and the first product and the sum of the second product are determined as the target screen brightness.

[0015] In the above technical solution, when the ambient brightness inside the vehicle is high and the usage time of the first vehicle-mounted screen is short, the vehicle in the method increases the initial screen brightness of the target screen. This can ensure that the target screen is clearly visible, and can also prevent the target screen from having too strong light and dark contrast and causing visual fatigue of the user, and also make the target screen more vivid and bright, which can enhance the user's visual enjoyment. When the ambient brightness is low and the usage time is long, the vehicle reduces the initial screen brightness of the target screen. This can reduce the stimulation to the eyes, avoid the target screen with higher brightness from continuing to stimulate the user's eyes, and relieve the user's motion sickness symptoms. When the ambient brightness inside the vehicle is high (or low) and the usage time of the first vehicle-mounted screen is long (or short), the vehicle in the method increases (or decreases) and then decreases (or increases) the initial screen brightness of the target screen. This is equivalent to separately discussing the effects of ambient brightness and screen usage time on the initial screen brightness, and can accurately determine the target screen brightness.

[0016] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the first vehicle-mounted screen is a co-pilot entertainment screen, and the second vehicle-mounted screen is a co-pilot ceiling screen. When the first vehicle-mounted screen is the target vehicle-mounted screen, the target screen is switched to the second vehicle-mounted screen for the user to watch, including: when the first vehicle-mounted screen is the target vehicle-mounted screen, outputting a reminder message, and the reminder message is used to remind the user to switch the target screen; when the reminder message is confirmed by the user, controlling the second vehicle-mounted screen to be in an on state and adjusting the co-pilot seat where the user is sitting; after the second vehicle-mounted screen is in an on state and the co-pilot seat is adjusted, switching the target screen to the second vehicle-mounted screen for the user to watch.

[0017] In the above technical solution, before switching the target screen to the second vehicle screen, the vehicle in the method outputs a reminder message. This can respect the user's choice, and the user can independently determine whether to view the target screen through the second vehicle screen. After the reminder message is confirmed by the user, the vehicle controls the second vehicle screen to be turned on and adjusts the passenger seat where the user is sitting. This ensures that the second vehicle screen can display the target screen and the user can view the target screen with a better line of sight and posture, thereby providing the user with a better viewing experience.

[0018] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, the first vehicle-mounted screen is a rear seatback screen, and the second vehicle-mounted screen is a rear ceiling screen. When the first vehicle-mounted screen is the target vehicle-mounted screen, the target screen is switched to the second vehicle-mounted screen for the user to watch, including: when the first vehicle-mounted screen is the target vehicle-mounted screen, determining the number of first users in the vehicle who are in a motion sickness state; when the number of first users is a first number, switching the target screen to the second vehicle-mounted screen for the user to watch; when the number of first users is greater than the first number, determining the target user from the multiple users based on the degree of motion sickness of each user among the multiple users, and switching the target screen on the rear seatback screen corresponding to the target user to the second vehicle-mounted screen for the user to watch.

[0019] In the above technical solution, the vehicle determines the number of first users who are in a state of motion sickness, and alleviates the users' motion sickness symptoms based on different strategies. When the number of first users is the first number, the vehicle directly switches the target screen to the second in-vehicle screen for the user to watch. This can respond to the user's motion sickness in a timely manner, and can prompt the user to relieve the motion sickness more quickly. When the number of first users is greater than the first number, the vehicle determines the target user from multiple users based on the degree of motion sickness of each user among the multiple users, which can distinguish the severity or urgency of the motion sickness symptoms and find the user with the most serious degree of motion sickness. Furthermore, the target screen on the rear seatback screen corresponding to the target user is switched to the second in-vehicle screen, which can alleviate the target user's motion sickness symptoms and prevent the aggravation of his or her motion sickness symptoms, and may even cause impaired consciousness, coma, shock and the like.

[0020] In combination with the first aspect and the above-mentioned implementation methods, in some possible implementation methods, a target user is determined from among multiple users based on the degree of motion sickness of each user, including: when the degrees of motion sickness of the multiple users are different, the user with the most severe motion sickness among the multiple users is determined as the target user; when at least two users among the multiple users have the same degree of motion sickness, the riding distance of the multiple users is obtained; when the riding distance of the multiple users is less than a preset distance, the target user is determined from among the multiple users based on the user's age and / or gender; when the riding distance of the multiple users is greater than the preset distance, the target user is determined from among the multiple users based on the user's riding distance and / or riding priority.

[0021] In the above technical solution, when the motion sickness levels of the multiple users are not the same, the vehicle determines the user with the most severe motion sickness among the multiple users as the target user. When at least two users among the multiple users have the same motion sickness level, the vehicle obtains the travel distance of the multiple users and decides the target user based on the travel distance. That is, when determining the target user, the vehicle in the method gives priority to the user's motion sickness level, which can alleviate the user's motion sickness symptoms and avoid aggravation of their motion sickness symptoms. When the travel distance of multiple users is short, the travel distance has little effect on the user's motion sickness symptoms. The vehicle in the method determines the target user from the multiple users based on the user's age and / or gender. This can determine the target user whose age is within a preset age range and / or is female from the multiple users, and can give priority to alleviating the motion sickness symptoms of female users within the preset age range. When the travel distance of multiple users is long, the travel distance has a great impact on the user's motion sickness symptoms. The vehicle in the method determines the target user from the multiple users based on the user's travel distance and / or travel priority. This can reduce the risk of aggravation of motion sickness symptoms when the travel distance is long. When the riding distances of multiple users are the same, the vehicle can also determine the target user from the multiple users based on the riding priority, which can avoid the phenomenon of being unable to determine the target user.

[0022] In a second aspect, a device for switching playback screens is provided, the device comprising: a determination module, for determining whether a user in the vehicle is in a motion sickness state when a vehicle is in motion and the user is watching a target screen through a first vehicle-mounted screen; and, when the user is in a motion sickness state, determining whether the first vehicle-mounted screen is a target vehicle-mounted screen, and the distance between the target vehicle-mounted screen and the user is less than a first preset distance; and a switching module, for switching the target screen to a second vehicle-mounted screen for the user to watch, and the distance between the second vehicle-mounted screen and the user is greater than the first preset distance, when the first vehicle-mounted screen is the target vehicle-mounted screen.

[0023] In combination with the second aspect, in some possible implementations, the determination module is specifically used to: determine that the user is in a motion sickness state when the user triggers the anti-motion sickness mode in the vehicle; determine that the user is in a motion sickness state when the vehicle is driving at a level higher than or equal to a preset level of stability and the number of times the user lowers his head is greater than a first preset number of times; determine that the user is in a motion sickness state when the level of stability is lower than the preset level of stability and the user's eyes are closed for a period of time greater than a first preset period of time; determine that the user is in a motion sickness state when the vehicle brakes for a period of time greater than a second preset number of times and the user's mouth is open for a period of time greater than a second preset period of time; determine that the user is in a motion sickness state when the user's mouth is open and the user's eyes are closed.

[0024] In combination with the second aspect and the above-mentioned implementation methods, in some possible implementation methods, the device also includes: an acquisition module, used to obtain the initial playback parameters of the target screen before the target screen is switched, and the parameter type of the initial playback parameters is related to the user's motion sickness; an adjustment module, used to adjust the initial playback parameters based on the ambient brightness inside the vehicle and the usage time of the first vehicle screen to obtain the target playback parameters; the switching module, specifically used to switch the target screen to the second vehicle screen with the target playback parameters for the user to watch.

[0025] In combination with the second aspect and the above-mentioned implementation methods, in some possible implementation methods, the determination module is specifically used to: determine a first deviation amplitude of the ambient brightness relative to the preset ambient brightness, and a second deviation amplitude of the usage time relative to a third preset time; determine a first product between the first deviation amplitude and a preset playback parameter, and determine a second product between the second deviation amplitude and the preset playback parameter, and the preset playback parameter corresponds to the preset ambient brightness and the third preset time; the adjustment module is specifically used to adjust the initial playback parameters based on the ambient brightness, the usage time, the first product and the second product to obtain the target playback parameters.

[0026] In combination with the second aspect and the above-mentioned implementation manner, in some possible implementation manners, the initial playback parameter includes an initial screen brightness, the preset playback parameter includes a preset screen brightness, and the determination module is specifically further used to: when the ambient brightness is greater than the preset ambient brightness and the usage time is less than the third preset time, determine the sum of the initial screen brightness, the first product and the second product as the target screen brightness in the target playback parameter; when the ambient brightness is less than or equal to the preset ambient brightness and the usage time is greater than or equal to the third preset time, determine the difference between the initial screen brightness, the first product and the second product as the target screen brightness; when the ambient brightness is greater than the preset ambient brightness and the usage time is greater than or equal to the third preset time, determine the sum of the initial screen brightness and the first product and the difference between the first product and the second product as the target screen brightness; when the ambient brightness is less than or equal to the preset ambient brightness and the usage time is less than the third preset time, determine the difference between the initial screen brightness and the first product and the sum of the second product as the target screen brightness.

[0027] In combination with the second aspect and the above-mentioned implementation methods, in some possible implementation methods, the first vehicle-mounted screen is a co-pilot entertainment screen, and the second vehicle-mounted screen is a co-pilot ceiling screen. The device also includes: a display module, which is used to output a reminder message when the first vehicle-mounted screen is the target vehicle-mounted screen, and the reminder message is used to remind the user to switch the target screen; a control module, which is used to control the second vehicle-mounted screen to be in an on state and adjust the co-pilot seat where the user is sitting when the reminder message is confirmed by the user; the switching module is specifically used to switch the target screen to the second vehicle-mounted screen for the user to watch after the second vehicle-mounted screen is in an on state and the co-pilot seat is adjusted.

[0028] In combination with the second aspect and the above-mentioned implementation methods, in some possible implementation methods, the first vehicle-mounted screen is a rear seatback screen, and the second vehicle-mounted screen is a rear ceiling screen. The determination module is specifically used to determine the number of first users in the vehicle who are in a motion sickness state when the first vehicle-mounted screen is the target vehicle-mounted screen; the switching module is also specifically used to switch the target screen to the second vehicle-mounted screen for the users to watch when the number of first users is the first number; when the number of first users is greater than the first number, determine the target user from the multiple users based on the degree of motion sickness of each user among the multiple users, and switch the target screen on the rear seatback screen corresponding to the target user to the second vehicle-mounted screen for the user to watch.

[0029] In combination with the second aspect and the above-mentioned implementation methods, in some possible implementation methods, the determination module is further specifically used to: when the motion sickness levels of the multiple users are different, determine the user with the most severe motion sickness level among the multiple users as the target user; when at least two users among the multiple users have the same motion sickness level, obtain the riding distances of the multiple users; when the riding distances of the multiple users are all less than a preset distance, determine the target user from the multiple users based on the user's age and / or gender; when the riding distances of the multiple users are greater than the preset distance, determine the target user from the multiple users based on the user's riding distance and / or riding priority.

[0030] In a third aspect, a vehicle is provided, comprising a memory and a processor. The memory is used to store 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 method in the first aspect or any possible implementation of the first aspect.

[0031] In a fourth aspect, a computer-readable storage medium is provided, which stores an executable program code. When the executable program code runs on a computer, the computer executes the method in the above-mentioned first aspect or any possible implementation of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a schematic diagram of a scenario of using a vehicle provided in an embodiment of the present application;

[0033] Figure 2 is a schematic flow chart of a method for switching playback screens provided in an embodiment of the present application;

[0034] Figure 3 is a schematic diagram of determining a first angle provided in an embodiment of the present application;

[0035] Figure 4 is a schematic diagram of determining a second angle provided in an embodiment of the present application;

[0036] Figure 5 It is a structural schematic diagram of a device for switching playback images provided in an embodiment of the present application;

[0037] Figure 6 It is a structural schematic diagram of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] 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.

[0039] 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.

[0040] Figure 1 It is a schematic diagram of a scenario of using a vehicle provided in an embodiment of the present application.

[0041] In some practical scenarios, users need to work on the vehicle screen while the vehicle is in motion. For example, Figure 1As shown, in most cases, the business owner will have to handle affairs through the on-board screen in vehicle A due to various emergencies. This may be due to fierce market competition, requiring the business owner to make decisions immediately; or there may be a sudden change in customer demand, and the business owner needs to adjust the plan quickly.

[0042] However, if the user stares at the in-vehicle screen for a long time and at a close distance, the user may easily suffer from motion sickness, which may affect the user's riding experience to a certain extent.

[0043] In order to solve the above problems, the present application provides a method for switching playback images to meet the user's viewing needs for the in-car screen and relieve the user's motion sickness symptoms. The specific implementation steps are as follows: Figure 2 shown.

[0044] Figure 2 It is a schematic flowchart of a method for switching playback screens provided in an embodiment of the present application.

[0045] It should be understood that the method for switching playback images provided in the embodiment of the present application can be applied to the following examples: Figure 1 The vehicle shown (eg, vehicle A). Specifically, the method for switching the playback screen can be applied to a vehicle controller in the vehicle.

[0046] For example, Figure 2 As shown, the method 200 includes the following steps 201 to 203.

[0047] Step 201, when a vehicle is in a driving state and a user in the vehicle is viewing a target image through a first vehicle-mounted screen, the vehicle determines whether the user is in a motion sickness state.

[0048] It should be understood that the "first vehicle screen" in the above step 201 is any vehicle screen in the vehicle that can provide entertainment functions and / or work needs for the user. In some embodiments, the first vehicle screen is any one of a passenger entertainment screen, a rear seat back screen, a passenger ceiling screen, and a rear ceiling screen.

[0049] It should also be understood that the "target picture" in the above step 201 refers to the continuous frame image displayed on the first vehicle-mounted screen. The playback parameters of the target picture include picture brightness, picture color temperature, picture refresh rate and picture smoothness, etc. Among them, the picture color temperature refers to the color temperature of the target picture. The picture color temperature affects the visual effect of the first vehicle-mounted screen. A lower picture color temperature will make the target picture warmer, which is suitable for use at night or in dim environments. This tone is closer to natural light and helps to reduce eye fatigue. A higher picture color temperature will make the picture cooler, which is suitable for use during the day or in a well-lit environment. This tone is brighter and helps to improve visual clarity. The picture refresh rate refers to the number of times the first vehicle-mounted screen is updated per second. The higher the picture refresh rate, the faster the picture is updated and the smoother the displayed picture. Picture smoothness refers to the smoothness and coherence when the first vehicle-mounted screen displays multiple target pictures.

[0050] It should also be understood that, regardless of whether the "user" in step 201 is the front-row user or the back-row user in the vehicle, after the user watches the target picture played on the first vehicle-mounted screen for a long time, the user will suffer from motion sickness. Specifically, for the front-row user, watching the target picture for a long time will cause the neck muscles to continuously contract, resulting in compression of the blood vessels in the neck, thereby reducing the blood supply to the brain tissue, which may cause symptoms of motion sickness. However, the front-row user has a wider field of vision, and is less likely to suffer from motion sickness than the back-row user. For the back-row user, the back-row user cannot see the road ahead, which means that the back-row user lacks the first visual information about how the vehicle moves. In this case, there is a difference between the motion state perceived by the body and the position information perceived by the vision, and this difference will stimulate the vestibular organs of the back-row users, which will increase the probability of the back-row users being in a state of motion sickness.

[0051] It should also be understood that when the user is in a motion sickness state in the above step 201, the user may experience the following symptoms, including drowsiness (closing eyes and / or opening mouth and / or nodding frequently and / or bloodshot eyes and / or tears in eyes), nausea, vomiting, dizziness, headache, cold sweat, pale face, tinnitus and stuffy ears, etc. When the vehicle is driving on a bumpy road, or the driving mode of the vehicle is the target driving mode (the target driving mode is used to affect the stability of the vehicle when driving), or the number of brakes of the vehicle is large, the user who watches the target screen for a long time is likely to experience motion sickness.

[0052] Step 202, when the user is in a state of motion sickness, the vehicle determines whether the first vehicle-mounted screen is a target vehicle-mounted screen, and the distance between the target vehicle-mounted screen and the user is less than a first preset distance.

[0053] It should be understood that the "target vehicle screen" in the above step 202 is the vehicle screen that is closer to the user. When the user is a passenger seat user in the front row, the target vehicle screen is the passenger seat entertainment screen. When the user is a rear seat user, the target vehicle screen is the rear seat back screen.

[0054] In some embodiments, the target vehicle screen is in front of the user.

[0055] In a possible implementation, the method for determining that the user is in a motion sickness state in step 202 includes at least one of the following: when the user triggers the anti-motion sickness mode in the vehicle, the vehicle determines that the user is in a motion sickness state; when the vehicle's driving stability is higher than or equal to a preset stability and the user's head lowering times are greater than a first preset number of times, the vehicle determines that the user is in a motion sickness state; when the stability is lower than the preset stability and the user's eyes are closed for a period of time greater than a first preset period of time, the vehicle determines that the user is in a motion sickness state; when the vehicle brakes for a period of time greater than a second preset number of times and the user's mouth is open for a period of time greater than a second preset period of time, the vehicle determines that the user is in a motion sickness state; when the user's mouth is open and the user's eyes are closed, the vehicle determines that the user is in a motion sickness state.

[0056] It should be understood that the "anti-motion sickness mode" in the above solution refers to a mode for alleviating the user's motion sickness symptoms. In some embodiments, the user triggers the anti-motion sickness mode by voice; or, the user triggers the anti-motion sickness mode by clicking an anti-motion sickness button in the vehicle, which is a physical button or a virtual button on the vehicle screen; or, the user triggers the anti-motion sickness mode by an anti-motion sickness gesture, which is a gesture of opening the palm.

[0057] In the above technical solution, the vehicle determines that the user is in a state of motion sickness through a variety of methods, which can increase the accuracy of the user's motion sickness state. Specifically, the user is determined to be in a state of motion sickness by triggering the anti-motion sickness mode in the vehicle. This is a way for the user to actively turn on the anti-motion sickness mode, which can more accurately and directly determine that the user is in a state of motion sickness. Through the first combination method between the vehicle state and the user state, the error in determining the state of motion sickness by a single factor can be reduced. Furthermore, the first combination method takes into account the stability of the vehicle during driving and the number of brakes of the vehicle. This is because low stability and high number of brakes will aggravate the user's discomfort. There is a large difference between the motion state perceived by the user's body and the position information perceived by the vision, which will cause the user to get motion sickness. The user state can intuitively determine whether the user is motion sickness. Therefore, the first combination method can more accurately determine that the user is in a state of motion sickness. Through the second combination method between the user's eye state and mouth state, it is possible to indirectly infer whether the user is motion sickness and accurately determine that the user is in a state of motion sickness.

[0058] In some embodiments, the smoothness of the vehicle during driving is lower than a preset smoothness, which includes the bumpiness of the road surface on which the vehicle is driving being within a preset range and / or the driving mode of the vehicle being a target driving mode, which is used to affect the stability of the vehicle.

[0059] In some embodiments, the target driving mode is any one of a sand mode, a snow mode, an off-road mode, and a sports mode.

[0060] In some embodiments, a method for determining the smoothness of the vehicle while traveling includes: the vehicle obtains multiple accelerations of the vehicle within a target duration; the vehicle determines the variance of the multiple accelerations as the smoothness; or, the vehicle determines the mean square error of the multiple accelerations as the smoothness.

[0061] In some embodiments, when the variance of the multiple accelerations is greater than or equal to a preset variance, the vehicle determines that the vehicle is traveling at a smoothness higher than or equal to the preset smoothness; when the variance of the multiple accelerations is less than the preset variance, the vehicle determines that the vehicle is traveling at a smoothness lower than the preset smoothness; or, when the mean square error of the multiple accelerations is greater than or equal to the preset mean square error, the vehicle determines that the vehicle is traveling at a smoothness higher than or equal to the preset smoothness; when the mean square error of the multiple accelerations is less than the preset mean square error, the vehicle determines that the vehicle is traveling at a smoothness lower than the preset smoothness.

[0062] In some embodiments, when the user's mouth is open and the user's eyes are closed, the vehicle determines that the user is in a motion sickness state, including: when the user's mouth is open, the user's eyes are open and the degree of opening is less than a first preset degree, and the eyes are in a congested state and contain tears, the vehicle determines that the user is in a motion sickness state.

[0063] Step 203, when the first vehicle-mounted screen is the target vehicle-mounted screen, the vehicle switches the target screen to the second vehicle-mounted screen for the user to watch, and the distance between the second vehicle-mounted screen and the user is greater than the first preset distance.

[0064] It should be understood that the above step 203 describes switching the target image watched by the user from a closer in-vehicle screen to a farther in-vehicle screen for playback, which can change the focus of the user's eyes, making the visually perceived playback image closer to the visual effect of the eyes looking at the distant scenery outside the window during normal driving, thereby alleviating the user's motion sickness symptoms.

[0065] In some embodiments, the second in-vehicle screen is located above the user (or a seat in the vehicle).

[0066] In one possible implementation, the vehicle in step 203 switches the target screen to the second vehicle-mounted screen for the user to watch, including: the vehicle obtains initial playback parameters of the target screen before the target screen is switched, and the parameter type of the initial playback parameters is related to the user's motion sickness; the vehicle adjusts the initial playback parameters based on the ambient brightness inside the vehicle and the usage time of the first vehicle-mounted screen to obtain target playback parameters; the vehicle switches the target screen to the second vehicle-mounted screen with the target playback parameters for the user to watch.

[0067] It should be understood that the "parameter type of the initial playback parameter is related to the user's motion sickness" in the above solution means that after the target picture is played with the initial playback parameter of the parameter type, it may cause the user to experience motion sickness. The "use time of the first vehicle screen" in the above solution can be understood as the duration of the first vehicle screen being lit.

[0068] In the above technical solution, the vehicle adjusts the initial playback parameters of the target image based on the ambient brightness inside the vehicle and the usage time of the first vehicle screen. This takes into account the combined impact of ambient brightness and screen usage time on the target image, and can obtain image quality parameters (target playback parameters) that alleviate motion sickness. For example, when the ambient brightness is high and the screen usage time is long, the screen brightness is lowered. In this way, after the target image is switched to the second vehicle screen for viewing by the user with the target playback parameters, it can not only change the user's viewing distance of the target image, but also affect the coordination between the body's perceived motion state and the visually perceived position information, prompting the eyeballs to refocus, thereby improving the user's motion sickness symptoms.

[0069] In one possible implementation, the vehicle adjusts the initial playback parameters based on the ambient brightness inside the vehicle and the usage time of the first vehicle-mounted screen to obtain target playback parameters, including: the vehicle determines a first deviation amplitude of the ambient brightness relative to a preset ambient brightness, and a second deviation amplitude of the usage time relative to a third preset time; the vehicle determines a first product between the first deviation amplitude and the preset playback parameter, and determines a second product between the second deviation amplitude and the preset playback parameter, the preset playback parameter corresponding to the preset ambient brightness and the third preset time; the vehicle adjusts the initial playback parameters based on the ambient brightness, the usage time, the first product, and the second product to obtain the target playback parameters.

[0070] It should be understood that the "preset playback parameters corresponding to the preset ambient brightness and the third preset duration" in the above scheme means that when the ambient brightness inside the vehicle is the preset ambient brightness and the usage time of the first vehicle screen is the third preset time, the vehicle controls the first vehicle screen to play the picture with the preset playback parameters, which can prevent the user from experiencing motion sickness symptoms to the greatest extent. The preset playback parameters are the most eye-friendly picture playback parameters for the user when the ambient brightness inside the vehicle is the preset ambient brightness and the usage time of the first vehicle screen is the third preset time. In addition, the preset playback parameters corresponding to the preset ambient brightness and the third preset time are obtained through multiple experiments.

[0071] In the above technical solution, the preset playback parameters are the most eye-friendly picture playback parameters for users when the ambient brightness inside the vehicle is the preset ambient brightness and the usage time of the first vehicle-mounted screen is the third preset time. The preset playback parameters can prevent the user from motion sickness to the greatest extent. Therefore, the vehicle in the method determines the deviation amplitude between the current in-vehicle ambient brightness and the preset ambient brightness, as well as the deviation amplitude between the screen usage time and the third preset time, and based on these two deviation amplitudes and the preset playback parameters, determines the adjustment amount for adjusting the initial playback parameters of the target picture. In addition, when adjusting the initial playback parameters, it is necessary to consider the issue of increasing or decreasing the initial playback parameters. Therefore, the vehicle in the method ultimately adjusts the initial playback parameters based on the ambient brightness, usage time and adjustment amount. This can obtain the optimal playback parameters that alleviate the user's current motion sickness state and meet the user's needs to continue watching the target picture.

[0072] In some embodiments, the vehicle determines a first deviation amplitude of the ambient brightness relative to a preset ambient brightness, including: the vehicle determines a brightness value between the ambient brightness and the preset ambient brightness; the vehicle determines a ratio between the brightness value and the preset ambient brightness as the first deviation amplitude.

[0073] It should be understood that the process of determining the "second deviation amplitude of the usage time relative to the third preset time" in the above scheme is similar to the process of determining the "first deviation amplitude of the ambient brightness relative to the preset ambient brightness" in this scheme, and will not be repeated here.

[0074] In a possible implementation, the initial playback parameter includes an initial screen brightness, the preset playback parameter includes a preset screen brightness, and the vehicle adjusts the initial playback parameter based on the ambient brightness, the usage time, the first product, and the second product to obtain a target playback parameter, including: when the ambient brightness is greater than the preset ambient brightness and the usage time is less than the third preset time, the vehicle determines the sum of the initial screen brightness, the first product, and the second product as the target screen brightness in the target playback parameter; when the ambient brightness is less than or equal to the preset ambient brightness and the usage time is greater than or equal to the third preset time, the vehicle determines the sum of the initial screen brightness, the first product, and the second product as the target screen brightness in the target playback parameter. In the case of the third preset time length, the vehicle determines the difference between the initial screen brightness, the first product and the second product as the target screen brightness; when the ambient brightness is greater than the preset ambient brightness and the usage time is greater than or equal to the third preset time length, the vehicle determines the target screen brightness as the sum of the initial screen brightness and the first product and the difference between the two products; when the ambient brightness is less than or equal to the preset ambient brightness and the usage time is less than the third preset time length, the vehicle determines the target screen brightness as the difference between the initial screen brightness and the first product and the sum of the second product.

[0075] It should be understood that in the above scheme, when the ambient brightness inside the vehicle is high, the brightness of the target screen should be appropriately increased, which can ensure that the target screen is clearly visible and prevent the target screen from having too strong a contrast between light and dark and causing visual fatigue to the user; when the ambient brightness inside the vehicle is low, the brightness of the target screen should be appropriately reduced, which can reduce stimulation to the eyes. When the first vehicle-mounted screen is used for a long time, the brightness of the target screen can be reduced, which can prevent the higher-brightness target screen from continuing to stimulate the user's eyes and relieve the user's motion sickness symptoms; when the first vehicle-mounted screen is used for a short time, the brightness of the target screen can be increased, which makes the target screen more vivid and bright, and can enhance the user's visual enjoyment.

[0076] It should also be understood that the "determine the target screen brightness as the sum of the initial screen brightness and the first product and the difference between the sum and the second product" in the above solution means that the difference between the sum result (the sum of the initial screen brightness and the first product) and the second product is determined as the target screen brightness. The "determine the target screen brightness as the difference between the initial screen brightness and the first product and the sum of the second product" in the above solution means that the sum of the difference result (the difference between the initial screen brightness and the first product) and the second product is determined as the target screen brightness.

[0077] In the above technical solution, when the ambient brightness inside the vehicle is high and the usage time of the first vehicle-mounted screen is short, the vehicle in the method increases the initial screen brightness of the target screen. This can ensure that the target screen is clearly visible, and can also prevent the target screen from having too strong light and dark contrast and causing visual fatigue of the user, and also make the target screen more vivid and bright, which can enhance the user's visual enjoyment. When the ambient brightness is low and the usage time is long, the vehicle reduces the initial screen brightness of the target screen. This can reduce the stimulation to the eyes, avoid the target screen with higher brightness from continuing to stimulate the user's eyes, and relieve the user's motion sickness symptoms. When the ambient brightness inside the vehicle is high (or low) and the usage time of the first vehicle-mounted screen is long (or short), the vehicle in the method increases (or decreases) and then decreases (or increases) the initial screen brightness of the target screen. This is equivalent to separately discussing the effects of ambient brightness and screen usage time on the initial screen brightness, and can accurately determine the target screen brightness.

[0078] It should be understood that the initial playback parameters and the preset playback parameters also include other parameters. When the initial playback parameters include the initial picture color temperature (or initial picture refresh rate) and the preset playback parameters include the preset picture color temperature (or initial picture refresh rate), in this case, the vehicle adjusts the initial playback parameters based on the ambient brightness inside the vehicle, the usage time of the first vehicle screen, the first product and the second product. The control logic for obtaining the target picture color temperature (or target picture refresh rate) in the target playback parameters is the same as the control logic for determining the target picture brightness, which will not be repeated here.

[0079] In some embodiments, the initial playback parameter includes an initial picture smoothness, the preset playback parameter includes a preset picture smoothness, and the vehicle adjusts the initial playback parameter based on the ambient brightness, the usage time, the first product, and the second product to obtain a target playback parameter, including: when the ambient brightness is greater than the preset ambient brightness and the usage time is greater than or equal to the third preset time, the vehicle determines the difference between the initial picture smoothness, the first product, and the second product as the target picture smoothness in the target playback parameter; when the ambient brightness is less than or equal to the preset ambient brightness and the usage time is less than the third preset time, the vehicle determines the difference between the initial picture smoothness, the first product, and the second product as the target picture smoothness in the target playback parameter. In the case of three preset time periods, the vehicle determines the sum of the initial screen smoothness, the first product and the second product as the target screen smoothness; when the ambient brightness is greater than the preset ambient brightness and the usage time is less than the third preset time period, the vehicle determines the difference between the initial screen smoothness and the first product and the sum of the second product as the target screen smoothness; when the ambient brightness is less than or equal to the preset ambient brightness and the usage time is greater than or equal to the third preset time period, the vehicle determines the target screen smoothness by the sum of the initial screen smoothness and the first product and the difference between the second product.

[0080] The process of "switching the target screen to the second vehicle-mounted screen" is described below in two cases.

[0081] The first type: the first car screen is the passenger entertainment screen in the front row of the vehicle, and the second car screen is the passenger ceiling screen. The user at this time is the passenger user.

[0082] In one possible implementation, the first vehicle-mounted screen is a passenger entertainment screen, and the second vehicle-mounted screen is a passenger ceiling screen. In step 203, when the first vehicle-mounted screen is the target vehicle-mounted screen, the vehicle switches the target screen to the second vehicle-mounted screen for the user to watch, including: when the first vehicle-mounted screen is the target vehicle-mounted screen, the vehicle outputs a reminder message, and the reminder message is used to remind the user to switch the target screen; when the reminder message is confirmed by the user, the vehicle controls the second vehicle-mounted screen to be in an on state and adjusts the passenger seat where the user is sitting; after the second vehicle-mounted screen is in an on state and the passenger seat is adjusted, the vehicle switches the target screen to the second vehicle-mounted screen for the user to watch.

[0083] It should be understood that the "reminder information" in the above scheme can be displayed on the first vehicle screen or output by voice. Correspondingly, the user clicks on the reminder information on the first vehicle screen or confirms by voice to ensure that the reminder information is confirmed by the user.

[0084] It should also be understood that the "passenger driver entertainment screen" in the above solution is installed on the passenger instrument panel, which is very close to the user, while the passenger driver ceiling screen is installed slightly behind the roof relative to the passenger seat. Therefore, "adjusting the passenger seat where the user is sitting" in the above solution usually refers to adjusting the seat backward. This can make the user's line of sight of viewing the target image more perpendicular to the passenger driver ceiling screen, reduce the twisting of the neck, and provide a better viewing experience.

[0085] In the above technical solution, before switching the target screen to the second vehicle screen, the vehicle in the method outputs a reminder message. This can respect the user's choice, and the user can independently determine whether to view the target screen through the second vehicle screen. After the reminder message is confirmed by the user, the vehicle controls the second vehicle screen to be turned on and adjusts the passenger seat where the user is sitting. This ensures that the second vehicle screen can display the target screen and the user can view the target screen with a better line of sight and posture, thereby providing the user with a better viewing experience.

[0086] In some embodiments, when the reminder message is confirmed by the user, the vehicle controls the second vehicle-mounted screen to be in an on state and adjusts the passenger seat where the user is sitting, including: when the reminder message is confirmed by the user, the vehicle controls the first vehicle-mounted screen to be in an off state and determines whether the second vehicle-mounted screen is in an on state; when the second vehicle-mounted screen is in an off state, the vehicle controls the second vehicle-mounted screen to be in an on state, and adjusts the passenger seat where the user is sitting based on the position of the second vehicle-mounted screen.

[0087] In some embodiments, the vehicle adjusts the passenger seat on which the user is sitting based on the position of the second vehicle-mounted screen, including: the vehicle adjusts the position of the passenger seat based on the fact that the backrest on the passenger seat should be located directly below the second vehicle-mounted screen; after adjusting the position of the passenger seat, the vehicle adjusts the angle of the backrest on the passenger seat based on the upper body length of the user.

[0088] In some embodiments, the vehicle adjusts the angle of the backrest on the passenger seat based on the upper body length of the user, including: the vehicle obtains the target shortest distance between the user's eyes and the second vehicle-mounted screen when the user views the target image through the second vehicle-mounted screen, and the target shortest distance is used to indicate the distance with the shortest impact on the eyes when viewing the target image on the second vehicle-mounted screen; the vehicle determines the vertical distance between the second vehicle-mounted screen and the seat cushion on the passenger seat, and determines the difference between the vertical distance and the upper body length as the first distance between the user's head and the second vehicle-mounted screen when the backrest is directly below; when the first distance is greater than or equal to the target shortest distance, the vehicle controls the angle of the backrest to be at a first angle, and zero degrees of the backrest is used to indicate that the backrest is perpendicular to the seat cushion; the first angle is based on the first position, the second The first position is a position on the backrest that is flush with the user's eyes when the backrest is directly below the second vehicle-mounted screen, the second position is a position where the backrest intersects with the seat cushion when the backrest is directly below the second vehicle-mounted screen, and the third position is a position after the first position is moved when the passenger seat continues to be adjusted backward and the user's eyes are directly below the second vehicle-mounted screen; when the first distance is less than the target shortest distance, the vehicle constructs a triangle based on the target shortest distance, the vertical distance and the second distance, and the second distance is the length of the user's upper body when the first distance between the user's head and the second vehicle-mounted screen is greater than or equal to the target shortest distance; the vehicle determines a second angle based on the following formula (1); the vehicle determines the sum of the first angle and the second angle as the third angle; the vehicle controls the angle of the backrest to be at the third angle;

[0089] (1)

[0090] in, is the second angle, is the second distance, is the shortest distance to the target, is the vertical distance.

[0091] It should be understood that the "third position" in the above scheme can be understood as the position on the backrest that is flush with the user's eyes when the passenger seat continues to be adjusted backward and the user's eyes are located directly below the second vehicle-mounted screen.

[0092] In some embodiments, the method for determining the first angle includes: in the case of a right triangle constructed by the first position, the second position and the third position, the vehicle determines the second distance between the first position and the second position as the length of the upper body, and determines the third distance between the first position and the third position, the third distance being the moving distance when the passenger seat is adjusted from directly below the second vehicle-mounted screen to the user's eyes being directly below the second vehicle-mounted screen; the vehicle determines a second ratio between the third distance and the length of the upper body; the vehicle determines the arc tangent value of the second ratio as the first angle.

[0093] Figure 3 This is a schematic diagram of determining a first angle provided in an embodiment of the present application.

[0094] For example, Figure 3 As shown, the backrest in the passenger seat corresponding to the solid line is located directly below the second vehicle screen. At this time, the user is sitting on the cushion in the passenger seat, and the user's eyes are located at position D. The vehicle marks the position flush with the user's eyes on the backrest as the first position C. The vehicle determines the position where the backrest and the cushion in the passenger seat corresponding to the solid line intersect as the second position A. In the process of continuing to adjust the passenger seat backward, when the user's eyes are located directly below the second vehicle screen, the position after the first position is moved is determined as the third position B. The first position and the second position are located on the same first straight line (the first straight line is perpendicular to the ground), and the first position and the third position are located on the same second straight line (the second straight line is perpendicular to the first straight line). Therefore, the first position C, the second position A and the third position B can form a right triangle ABC. In the right triangle ABC, the distance AC between the first position C and the second position A can be the length of the upper body of the user, and the third distance BC between the first position C and the third position B is the distance of continuing to adjust the passenger seat backward. In the right triangle ABC, the vehicle determines a second ratio between the third distance BC and the upper body length AC, and determines an arc tangent value of the second ratio as the first angle.

[0095] Figure 4 This is a schematic diagram of determining a third angle provided in an embodiment of the present application.

[0096] For example, Figure 4As shown, the backrest in the passenger seat corresponding to the solid line is located directly below the second vehicle screen. At this time, the user is sitting on the cushion in the passenger seat, and the user's eyes are located at position D. The vehicle determines the position where the backrest and the cushion in the passenger seat corresponding to the solid line intersect as the second position A. When the backrest is located directly below, when the first distance between the user's head and the second vehicle screen is less than the target shortest distance, the distance between the user's eyes and the second vehicle screen is too close, which will increase the user's eye vision. When the user watches the target screen on the second vehicle screen, the distance between the user's eyes and the second vehicle screen needs to be greater than or equal to the target shortest distance. In this method, based on the target shortest distance OE, the vehicle determines the vertical distance AO between the second vehicle screen and the cushion on the passenger seat corresponding to the solid line, and determines the upper body length AE of the user. The vehicle constructs a triangle AOE based on the target shortest distance OE, the vertical distance AO and the upper body length AE. In the triangle AOE, the vehicle substitutes the shortest distance to the target OE, the vertical distance AO and the upper body length AE into formula (1) to determine ∠EAO, i.e., the second angle. The second angle is determined by the position of the eye E, so it is necessary to add the first angle to the second angle to obtain the third angle.

[0097] In some embodiments, after the vehicle outputs a reminder message, the method 200 also includes: when the reminder message is not confirmed by the user, the vehicle adjusts the initial playback parameters of the target screen before switching to the target screen based on the ambient brightness inside the vehicle and the usage time of the first vehicle screen to obtain target playback parameters; the vehicle controls the first vehicle screen to display the target screen with the target playback parameters.

[0098] The second type: the first vehicle-mounted screen is the rear seatback screen in the rear row of the vehicle, and the second vehicle-mounted screen is the rear ceiling screen. The user at this time is a rear-seat user.

[0099] In one possible implementation, the first vehicle-mounted screen is a rear seatback screen, and the second vehicle-mounted screen is a rear ceiling screen. In step 203, when the first vehicle-mounted screen is the target vehicle-mounted screen, the vehicle switches the target screen to the second vehicle-mounted screen for the user to watch, including: when the first vehicle-mounted screen is the target vehicle-mounted screen, the vehicle determines the number of first users in the vehicle who are in a motion sickness state; when the number of first users is the first number, the vehicle switches the target screen to the second vehicle-mounted screen for the user to watch; when the number of first users is greater than the first number, the vehicle determines the target user from the multiple users based on the degree of motion sickness of each of the multiple users, and switches the target screen on the rear seatback screen corresponding to the target user to the second vehicle-mounted screen for the user to watch.

[0100] It should be understood that the "first number" in the above solution is 1, and the range of the first number of users is , It is related to the model of the vehicle. If the model is a small car, is 2; when the vehicle type is a large commercial vehicle, Is 3 or 4.

[0101] It should also be understood that there is usually one rear ceiling screen in a vehicle, and the number of first users in the vehicle who are in a state of motion sickness due to watching the target screen may exceed one, and different users often watch different target screens. This will result in the method of alleviating motion sickness through the rear ceiling screen being applicable only to a specific user. In the above solution, the specific user, i.e., the target user, is determined by the degree of motion sickness.

[0102] In the above technical solution, the vehicle determines the number of first users who are in a state of motion sickness, and alleviates the users' motion sickness symptoms based on different strategies. When the number of first users is the first number, the vehicle directly switches the target screen to the second in-vehicle screen for the user to watch. This can respond to the user's motion sickness in a timely manner, and can prompt the user to relieve the motion sickness more quickly. When the number of first users is greater than the first number, the vehicle determines the target user from multiple users based on the degree of motion sickness of each user among the multiple users, which can distinguish the severity or urgency of the motion sickness symptoms and find the user with the most serious degree of motion sickness. Furthermore, the target screen on the rear seatback screen corresponding to the target user is switched to the second in-vehicle screen, which can alleviate the target user's motion sickness symptoms and prevent the aggravation of his or her motion sickness symptoms, and may even cause impaired consciousness, coma, shock and the like.

[0103] In some embodiments, the method for determining the degree of motion sickness of each user among the multiple users includes: the vehicle takes any one of the multiple users as a first reference user, and when the first reference user triggers the anti-motion sickness mode in the vehicle, the vehicle determines that the degree of motion sickness of the first reference user is the second degree; when the degree of stability of the vehicle when driving is higher than or equal to the preset degree of stability, and the number of times the first reference user lowers his head is greater than the first preset number of times and less than or equal to the third preset number of times, the vehicle determines that the degree of motion sickness of the first reference user is the first degree; when the degree of stability of the vehicle when driving is higher than or equal to the preset degree of stability, and the number of times the first reference user lowers his head is greater than the third preset number of times and less than or equal to the fourth preset number of times, the vehicle determines that the degree of motion sickness of the first reference user is the second degree; when the degree of stability of the vehicle when driving is higher than or equal to the preset degree of stability, and the first reference user When the number of times the first reference user lowers his head is greater than the fourth preset number of times, the vehicle determines that the first reference user's motion sickness level is the third level; when the degree of stability is lower than the preset degree of stability and the length of time that the first reference user's eyes are in a closed state is greater than the first preset time and less than or equal to the fourth preset time, the vehicle determines that the first reference user's motion sickness level is the first level; when the degree of stability is lower than the preset degree of stability and the length of time that the first reference user's eyes are in a closed state is greater than the fourth preset time and less than or equal to the fifth preset time, the vehicle determines that the first reference user's motion sickness level is the second level; when the degree of stability is lower than the preset degree of stability and the length of time that the first reference user's eyes are in a closed state is greater than the fifth preset time, the vehicle determines that the first reference user's motion sickness level is the third level; wherein, the first level is lower than the second level, and the second level is lower than the third level.

[0104] In other embodiments, the method for determining the degree of motion sickness of each user among the multiple users includes: the vehicle takes any user among the multiple users as the first reference user, and when the vehicle brakes more than a second preset number of times, the first reference user's mouth is open for a period of time greater than the second preset period of time and less than or equal to a sixth preset period of time, and the degree of opening is lower than the second preset degree, the vehicle determines that the degree of motion sickness of the first reference user is the first degree; when the vehicle brakes more than the second preset number of times, the first reference user's mouth is open for a period of time greater than the second preset period of time and less than or equal to the sixth preset period of time, and the degree of opening is higher than the second preset degree, the vehicle determines that the degree of motion sickness of the first reference user is the second degree; when the vehicle brakes more than the second preset number of times, the first reference user's mouth is open for a period of time greater than the sixth preset period of time, and the degree of opening is higher than the second preset degree, the vehicle determines that the degree of motion sickness of the first reference user is the third degree.

[0105] In other embodiments, the method for determining the degree of motion sickness of each user among the multiple users includes: the vehicle takes any user among the multiple users as a first reference user, and determines the degree of opening of the mouth of the first reference user, and the degree of closure of the eyes of the first reference user; the vehicle performs a weighted summation of the degree of opening and the degree of closure based on a first weight and a second weight to determine the degree of motion sickness of the first reference user, the first weight being the contribution of the degree of opening of the mouth in determining the degree of motion sickness, and the second weight being the contribution of the degree of closure of the eyes in determining the degree of motion sickness.

[0106] It should be understood that in the above scheme, "opening degree" is used to indicate the degree of mouth opening, and "eye closing degree" is used to indicate the degree of eye closing, and the eye closing degree is opposite to the eye opening degree.

[0107] In some embodiments, the method for determining the degree of opening includes: the vehicle obtains the first maximum distance between the upper lip and the lower lip when the mouth of the first reference user is open and the second maximum distance between the upper lip and the lower lip at this degree of opening; the vehicle determines the ratio of the second maximum distance to the first maximum distance as the degree of opening.

[0108] In some embodiments, the method for determining the degree of eyes closure includes: the vehicle obtains the third farthest distance between the upper eyelid and the lower eyelid when the eyes of the first reference user are open and the fourth farthest distance between the upper eyelid and the lower eyelid at the degree of eyes closure; the vehicle determines a first ratio between the fourth farthest distance and the third farthest distance, and determines the difference between the first preset value and the first ratio as the degree of eyes closure.

[0109] It should be understood that the “first preset value” in the above solution is 1.

[0110] In one possible implementation, the vehicle determines a target user from among the multiple users based on the degree of motion sickness of each user, including: when the degrees of motion sickness of the multiple users are different, the vehicle determines the user with the most severe motion sickness among the multiple users as the target user; when at least two users among the multiple users have the same degree of motion sickness, the vehicle obtains the riding distance of the multiple users; when the riding distance of the multiple users is less than a preset distance, the vehicle determines the target user from among the multiple users based on the user's age and / or gender; when the riding distance of the multiple users is greater than the preset distance, the vehicle determines the target user from among the multiple users based on the user's riding distance and / or riding priority.

[0111] It should be understood that in the above scheme, when the user's riding distance is long and the user continues to watch the target picture through the first vehicle-mounted screen during the riding distance, the user's motion sickness level will gradually increase, and the user's motion sickness level is higher than the reference motion sickness level, which is the level when the riding distance is short and the user continues to watch the target picture through the first vehicle-mounted screen during the short riding distance.

[0112] In the above technical solution, when the motion sickness levels of the multiple users are not the same, the vehicle determines the user with the most severe motion sickness among the multiple users as the target user. When at least two users among the multiple users have the same motion sickness level, the vehicle obtains the travel distance of the multiple users and decides the target user based on the travel distance. That is, when determining the target user, the vehicle in the method gives priority to the user's motion sickness level, which can alleviate the user's motion sickness symptoms and avoid aggravation of their motion sickness symptoms. When the travel distance of multiple users is short, the travel distance has little effect on the user's motion sickness symptoms. The vehicle in the method determines the target user from the multiple users based on the user's age and / or gender. This can determine the target user whose age is within a preset age range and / or is female from the multiple users, and can give priority to alleviating the motion sickness symptoms of female users within the preset age range. When the travel distance of multiple users is long, the travel distance has a great impact on the user's motion sickness symptoms. The vehicle in the method determines the target user from the multiple users based on the user's travel distance and / or travel priority. This can reduce the risk of aggravation of motion sickness symptoms when the travel distance is long. When the riding distances of multiple users are the same, the vehicle can also determine the target user from the multiple users based on the riding priority, which can avoid the phenomenon of being unable to determine the target user.

[0113] In some embodiments, the vehicle determines the target user from the multiple users based on the age and / or gender of the users, including: the vehicle determines the number of a second user among the multiple users whose age is within a preset age range; when the number of the second users is the first number, the vehicle determines the users among the multiple users whose age is within the preset age range as the target users; when the number of the second users is greater than the first number, the vehicle determines the number of a third user whose gender is a preset gender among the second number of users; when the number of the third users is the first number, the vehicle determines the users of the first reference user among the second number of users as the target users; when the number of the third users is greater than the first number, the vehicle determines the target user from the users of the third number of users based on the destinations of the users of the third number of users; or, when there are second reference users whose gender is a preset gender and the first number among the multiple users, the vehicle determines the second reference user as the target user.

[0114] It should be understood that in some embodiments, the preset gender is female or male. The "preset age range" in the above scheme is used to indicate the age range with purchasing power. In some embodiments, the preset age range is age.

[0115] In the above technical solution, when using the in-vehicle screen to watch the target picture, the vehicle can give priority to the viewing needs of female users who have purchasing power. In the case where female users pay more attention to the comfort and convenience of the vehicle, this method can increase the loyalty of female users to the vehicle by meeting the viewing needs of female users. In addition, the vehicle can give priority to the viewing needs of male users who have purchasing power. In the case where male users are under great work pressure, this method can give priority to meeting the viewing needs of male users and improve the riding satisfaction of male users. Furthermore, when the number of users who have purchasing power and are of the preset gender is large, the method also determines the target user based on the user's destination. This can indirectly reflect the degree (degree of need) to which the user must use the in-vehicle screen to watch the target picture through the destination, and can meet the viewing needs of users with the greatest degree of need.

[0116] In some embodiments, the vehicle determines the target user from the third number of users based on the destinations of the third number of users, including: the vehicle determines the degree of need for each user among the third number of users to use the in-vehicle screen based on the destinations of the third number of users; the vehicle determines the user with the highest degree of need as the target user.

[0117] It should be understood that the "demand level" in the above solution is used to quantify the degree to which the user must use the in-vehicle screen to view the target image. In some embodiments, the demand level corresponding to the user whose destination is an office building is higher than the demand level corresponding to the user whose destination is an apartment, and the demand level corresponding to the user whose destination is an apartment is higher than the demand level corresponding to the user whose destination is a hospital.

[0118] In some embodiments, the vehicle determines the target user from the multiple users based on the user's travel distance and / or travel priority, including: when there is a third reference user with the shortest travel distance and a first number among the multiple users, the vehicle determines the third reference user as the target user; when there is a fourth reference user with the highest travel priority and a first number among the multiple users, the vehicle determines the fourth reference user as the target user; the vehicle determines the fourth number of users with the longest travel distance among the multiple users; when the fourth number of users is the first number, the vehicle determines the user with the longest travel distance among the multiple users as the target user; when the fourth number of users is greater than the first number, the vehicle determines the fifth number of users with the highest travel priority among the fourth number of users; when the fifth number of users is the first number, the vehicle determines the user with the highest travel priority among the fifth number of users as the target user; when the fifth number of users is greater than the first number, the vehicle determines the target user from the fifth number of users based on the congestion level of the roads corresponding to the fifth number of users.

[0119] It should be understood that the "congestion level of the driving road" in the above solution is pre-acquired through the navigation software.

[0120] In some embodiments, the vehicle determines the target user from the fifth number of users based on the congestion level of the driving roads corresponding to the fifth number of users, including: the vehicle sorts the fifth number of users based on the congestion level to obtain a plurality of sorted users, wherein the ranking of the users is negatively correlated with the congestion level; and the vehicle determines the user with the highest ranking among the sorted plurality of users as the target user.

[0121] It should be understood that “the user's ranking is negatively correlated with the congestion level” in the above solution means that the higher the user's ranking, the higher the congestion level; and the lower the user's ranking, the lower the congestion level.

[0122] In some embodiments, the vehicle determines a target user from among multiple users based on the degree of motion sickness of each user among the multiple users, and switches the target picture on the rear seatback screen corresponding to the target user to the second vehicle-mounted screen for the user to watch. The method 200 also includes: the vehicle determines a fifth reference user other than the target user among the multiple users and a sixth reference user in the vehicle who is not suffering from motion sickness symptoms; the vehicle keeps the target picture currently watched by the fifth reference user and the sixth reference user on the corresponding first vehicle-mounted screen, and controls the first vehicle-mounted screen to display the target picture with target playback parameters.

[0123] It should be understood that the "fifth reference user" and the "sixth reference user" in the above scheme are both users who watch the target image through the first vehicle-mounted screen, but the fifth reference user suffers from motion sickness, while the sixth reference user does not.

[0124] In some embodiments, step 203 includes: when the first vehicle-mounted screen is the target vehicle-mounted screen, the vehicle determines whether the second vehicle-mounted screen is in use; when the second vehicle-mounted screen is in use, the vehicle determines whether the seventh reference user who is currently using the second vehicle-mounted screen is in a motion sickness state; when the seventh reference user is not in a motion sickness state, the vehicle switches the playback screen currently displayed on the second vehicle-mounted screen to the first vehicle-mounted screen corresponding to the seventh reference user, and switches the target screen to the second vehicle-mounted screen for the user to watch.

[0125] Figure 5 It is a structural schematic diagram of a device for switching playback screens provided in an embodiment of the present application.

[0126] For example, Figure 5 As shown, the device 500 includes:

[0127] The determination module 501 is used to:

[0128] When the vehicle is in a driving state and a user in the vehicle is viewing a target picture through a first vehicle-mounted screen, determining whether the user is in a state of motion sickness;

[0129] In the case where the user is in a state of motion sickness, determining whether the first vehicle-mounted screen is a target vehicle-mounted screen, and a distance between the target vehicle-mounted screen and the user is less than a first preset distance;

[0130] The switching module 502 is used to switch the target screen to the second vehicle screen for the user to watch when the first vehicle screen is the target vehicle screen, and the distance between the second vehicle screen and the user is greater than the first preset distance.

[0131] Optionally, the determination module 501 is specifically used to: determine that the user is in a motion sickness state when the user triggers the anti-motion sickness mode in the vehicle; determine that the user is in a motion sickness state when the vehicle is traveling at a level of stability higher than or equal to a preset level of stability and the number of times the user lowers his head is greater than a first preset number of times; determine that the user is in a motion sickness state when the level of stability is lower than the preset level of stability and the user's eyes are closed for a period of time greater than a first preset period of time; determine that the user is in a motion sickness state when the vehicle brakes for a period of time greater than a second preset number of times and the user's mouth is open for a period of time greater than a second preset period of time; determine that the user is in a motion sickness state when the user's mouth is open and the user's eyes are closed.

[0132] Optionally, the device 500 also includes: an acquisition module, used to obtain the initial playback parameters of the target screen before the target screen is switched, and the parameter type of the initial playback parameters is related to the user's motion sickness; an adjustment module, used to adjust the initial playback parameters based on the ambient brightness inside the vehicle and the usage time of the first vehicle screen to obtain target playback parameters; the switching module 502 is specifically used to switch the target screen to the second vehicle screen with the target playback parameters for the user to watch.

[0133] Optionally, the determination module 501 is further specifically used to: determine a first deviation amplitude of the ambient brightness relative to a preset ambient brightness, and a second deviation amplitude of the usage time relative to a third preset time; determine a first product between the first deviation amplitude and a preset playback parameter, and determine a second product between the second deviation amplitude and the preset playback parameter, the preset playback parameter corresponding to the preset ambient brightness and the third preset time; the adjustment module is specifically used to adjust the initial playback parameters based on the ambient brightness, the usage time, the first product and the second product to obtain the target playback parameters.

[0134] Optionally, the initial playback parameter includes an initial screen brightness, the preset playback parameter includes a preset screen brightness, and the determination module 501 is further specifically used to: when the ambient brightness is greater than the preset ambient brightness and the usage time is less than the third preset time, determine the sum of the initial screen brightness, the first product and the second product as the target screen brightness in the target playback parameter; when the ambient brightness is less than or equal to the preset ambient brightness and the usage time is greater than or equal to the third preset time, determine the difference between the initial screen brightness, the first product and the second product as the target screen brightness; when the ambient brightness is greater than the preset ambient brightness and the usage time is greater than or equal to the third preset time, determine the sum of the initial screen brightness and the first product, and the difference between the first product and the second product as the target screen brightness; when the ambient brightness is less than or equal to the preset ambient brightness and the usage time is less than the third preset time, determine the difference between the initial screen brightness and the first product, and the sum of the second product as the target screen brightness.

[0135] Optionally, the first vehicle-mounted screen is a passenger entertainment screen, and the second vehicle-mounted screen is a passenger ceiling screen. The device 500 also includes: a display module, which is used to output a reminder message when the first vehicle-mounted screen is the target vehicle-mounted screen, and the reminder message is used to remind the user to switch the target screen; a control module, which is used to control the second vehicle-mounted screen to be in an on state and adjust the passenger seat on which the user is sitting when the reminder message is confirmed by the user; the switching module 502 is specifically used to switch the target screen to the second vehicle-mounted screen for the user to view after the second vehicle-mounted screen is in an on state and the passenger seat is adjusted.

[0136] Optionally, the first vehicle-mounted screen is a rear seatback screen, and the second vehicle-mounted screen is a rear ceiling screen. The determination module 501 is specifically used to determine the number of first users in the vehicle who are in a motion sickness state when the first vehicle-mounted screen is the target vehicle-mounted screen; the switching module 502 is also specifically used to switch the target screen to the second vehicle-mounted screen for the users to watch when the number of first users is the first number; when the number of first users is greater than the first number, based on the degree of motion sickness of each of the multiple users, determine the target user from the multiple users, and switch the target screen on the rear seatback screen corresponding to the target user to the second vehicle-mounted screen for the user to watch.

[0137] Optionally, the determination module 501 is further specifically used to: when the motion sickness levels of the multiple users are different, determine the user with the most severe motion sickness among the multiple users as the target user; when at least two users among the multiple users have the same motion sickness level, obtain the riding distances of the multiple users; when the riding distances of the multiple users are all less than a preset distance, determine the target user from the multiple users based on the user's age and / or gender; when the riding distances of the multiple users are greater than the preset distance, determine the target user from the multiple users based on the user's riding distance and / or riding priority.

[0138] Figure 6 It is a structural schematic diagram of a vehicle provided in an embodiment of the present application.

[0139] For example, Figure 6 As shown, the vehicle 600 includes: a memory 601 and a processor 602, wherein the memory 601 stores an executable program code 603, and the processor 602 is used to call and execute the executable program code 603 to perform a method for switching a playback screen.

[0140] 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 perform a method for switching playback screens provided in an embodiment of the present application.

[0141] 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.

[0142] In the case of dividing each functional module according to each function, the device may also include a determination module, a switching module, an acquisition module, an adjustment module, a display module, a control module, etc. It should be noted that all relevant contents involved in the above method embodiment can be referred to the functional description of the corresponding functional module, which will not be repeated here.

[0143] It should be understood that the device provided in this embodiment is used to execute the above-mentioned method for switching playback screens, and thus can achieve the same effect as the above-mentioned implementation method.

[0144] 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 related executable program codes, etc.

[0145] The processing module may be a processor or a controller, which may implement or execute various exemplary logic blocks, modules and circuits shown in combination with the contents disclosed in this 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.

[0146] 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 switching the playback screen provided in the above embodiment.

[0147] This embodiment also provides a computer-readable storage medium, in which executable program code is stored. When the executable program code is run on a computer, the computer executes the above-mentioned related method steps to implement a method for switching playback screens provided in the above embodiment.

[0148] This embodiment further 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 switching playback images provided in the above embodiment.

[0149] 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.

[0150] 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.

[0151] 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.

[0152] 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 switching playback images, characterized in that: The method comprises: When the vehicle is in a driving state and a user in the vehicle is viewing a target picture through a first vehicle-mounted screen, determining whether the user is in a state of motion sickness; In the case where the user is in a state of motion sickness, determining whether the first vehicle-mounted screen is a target vehicle-mounted screen, and a distance between the target vehicle-mounted screen and the user is less than a first preset distance; In the case where the first vehicle-mounted screen is the target vehicle-mounted screen, the target screen is switched to a second vehicle-mounted screen for viewing by the user, and the distance between the second vehicle-mounted screen and the user is greater than the first preset distance.

2. The method according to claim 1, characterized in that The method for determining that the user is in a state of motion sickness comprises at least one of the following: In a case where the user triggers an anti-motion sickness mode in the vehicle, determining that the user is in a motion sickness state; When the stability of the vehicle during driving is higher than or equal to a preset stability and the number of times the user lowers his head is greater than a first preset number, determining that the user is in a motion sickness state; When the level of stability is lower than the preset level of stability and the duration of the user's eyes being in the closed state is longer than a first preset duration, determining that the user is in a state of motion sickness; When the number of braking times of the vehicle is greater than a second preset number of times and the duration of the user's mouth being in an open state is greater than a second preset duration, determining that the user is in a state of motion sickness; When the user's mouth is open and the user's eyes are closed, it is determined that the user is in a motion sickness state.

3. The method according to claim 1, characterized in that The step of switching the target screen to the second vehicle-mounted screen for viewing by the user includes: Acquire initial playback parameters of the target screen before switching to the target screen, where the parameter type of the initial playback parameters is related to the user's motion sickness; Based on the ambient brightness inside the vehicle and the usage time of the first vehicle-mounted screen, the initial playback parameters are adjusted to obtain target playback parameters; The target picture is switched to the second vehicle-mounted screen with the target playback parameters for viewing by the user.

4. The method according to claim 3, characterized in that The adjusting the initial playback parameters based on the ambient brightness inside the vehicle and the usage time of the first vehicle-mounted screen to obtain target playback parameters includes: Determine a first deviation of the ambient brightness relative to a preset ambient brightness, and a second deviation of the usage duration relative to a third preset duration; Determine a first product between the first deviation amplitude and a preset playback parameter, and determine a second product between the second deviation amplitude and the preset playback parameter, the preset playback parameter corresponding to the preset ambient brightness and the third preset duration; Based on the ambient brightness, the usage time, the first product, and the second product, the initial playback parameters are adjusted to obtain target playback parameters.

5. The method according to claim 4, characterized in that The initial playback parameter includes an initial screen brightness, the preset playback parameter includes a preset screen brightness, and the initial playback parameter is adjusted based on the ambient brightness, the usage time, the first product, and the second product to obtain a target playback parameter, including: When the ambient brightness is greater than the preset ambient brightness and the usage time is less than the third preset time, determining the sum of the initial screen brightness, the first product and the second product as the target screen brightness in the target playback parameter; When the ambient brightness is less than or equal to the preset ambient brightness and the usage time is greater than or equal to the third preset time, determining the difference between the initial screen brightness, the first product and the second product as the target screen brightness; When the ambient brightness is greater than the preset ambient brightness and the usage time is greater than or equal to the third preset time, the sum of the initial screen brightness and the first product and the difference between the sum and the second product are determined as the target screen brightness; When the ambient brightness is less than or equal to the preset ambient brightness and the usage time is less than the third preset time, the difference between the initial screen brightness and the first product and the sum of the second product are determined as the target screen brightness.

6. The method according to any one of claims 1 to 5, characterized in that The first vehicle screen is a passenger entertainment screen, the second vehicle screen is a passenger ceiling screen, and when the first vehicle screen is the target vehicle screen, switching the target screen to the second vehicle screen for the user to watch includes: When the first vehicle-mounted screen is the target vehicle-mounted screen, outputting reminder information, the reminder information being used to remind the user to switch the target screen; When the reminder message is confirmed by the user, controlling the second vehicle-mounted screen to be turned on and adjusting the passenger seat on which the user is sitting; When the second in-vehicle screen is turned on and the passenger seat is adjusted, the target image is switched to the second in-vehicle screen for the user to watch.

7. The method according to any one of claims 1 to 5, characterized in that The first vehicle screen is a rear seatback screen, the second vehicle screen is a rear ceiling screen, and when the first vehicle screen is the target vehicle screen, switching the target screen to the second vehicle screen for the user to watch includes: In a case where the first in-vehicle screen is the target in-vehicle screen, determining the number of first users in the vehicle who are in a motion sickness state; When the number of the first users is the first number, switching the target screen to the second vehicle-mounted screen; When the number of the first users is greater than the first number, a target user is determined from the multiple users based on the degree of motion sickness of each user, and the target screen on the rear seatback screen corresponding to the target user is switched to the second vehicle screen for the user to watch.

8. The method according to claim 7, characterized in that The determining a target user from the multiple users based on the motion sickness degree of each user among the multiple users comprises: In a case where the motion sickness levels of the multiple users are different, determining the user with the most severe motion sickness level among the multiple users as the target user; When at least two of the multiple users have the same degree of motion sickness, obtaining the travel distances of the multiple users; When the riding distances of the plurality of users are all less than a preset distance, determining the target user from the plurality of users based on the age and / or gender of the user; In a case where the riding distance of the plurality of users is greater than the preset distance, the target user is determined from the plurality of users based on the riding distance and / or riding priority of the user.

9. A device for switching playback images, characterized in that: The device comprises: Identify modules for: When the vehicle is in a driving state and a user in the vehicle is viewing a target picture through a first vehicle-mounted screen, determining whether the user is in a state of motion sickness; In the case where the user is in a state of motion sickness, determining whether the first vehicle-mounted screen is a target vehicle-mounted screen, and a distance between the target vehicle-mounted screen and the user is less than a first preset distance; A switching module is used to switch the target screen to a second vehicle screen for the user to watch when the first vehicle screen is the target vehicle screen, and the distance between the second vehicle screen and the user is greater than the first preset distance.

10. A vehicle, characterized in that: The vehicle comprises: A memory for storing executable program codes; A processor, configured to call and run the executable program code from the memory, so that the vehicle executes the method according to any one of claims 1 to 8.

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