Method for pre-collision resetting of seat of vehicle, control system, seat for vehicle and vehicle

Abstract

The present application relates to a method for pre-impact resetting of a seat of a vehicle, in which at least one of a seat cushion rotation angle and a backrest rotation angle of the seat can be changed by means of a resetting mechanism. The method comprises the following steps: S1, acquiring a pre-collision signal; s2, in response to the pre-collision signal, the minimum action amount needed by a reset mechanism for resetting to a safety posture area of the seat is determined according to the current posture of the seat, and the current posture of the seat comprises a seat cushion rotation angle and a backrest rotation angle; and S3, according to the determined minimum action amount, a reset mechanism is controlled to reset the seat to a safe target posture, and the safe target posture is located in a safe posture area of the seat or located on the boundary of the safe posture area of the seat. The invention also relates to a corresponding control system, a seat for a vehicle and a vehicle.

Description

Technical Field

[0001] The present application generally relates to the technical field of vehicle seats, and more particularly to a method for pre-crash resetting of a vehicle seat, a control system for pre-crash resetting of a vehicle seat, a seat for a vehicle, and a vehicle. Background Art

[0002] In order to provide vehicle occupants with an optimized riding experience, the vehicle seat can be adjusted to a more comfortable posture for the vehicle occupants, and a zero-pressure seat is an example of this. The zero-pressure seat is a high-tech seat designed according to ergonomic principles and the physiological curve of the human body. In the zero-pressure posture, it can provide uniform and comfortable support for the body, so that the parts of the body that are in contact for a long time are in a pressure-free state, thereby reducing the body pressure of the driver and passengers and tending to a zero-pressure suspension state.

[0003] Generally speaking, a zero-pressure seat has a safe state and a zero-gravity state. In the safe state, the occupant is generally in a normal posture, and in the zero-gravity state, the occupant is in a reclining posture. By adjusting the inclination angle of the backrest of the zero-pressure seat, the zero-pressure seat can be switched between the safe state and the zero-gravity state. When designing a seat, a collision verification is generally performed in the safe state of the seat. Therefore, if the zero-pressure seat is in a safe state when the vehicle collides, the occupant will be relatively safe. However, since the occupant is in a reclining posture when the zero-pressure seat is in the zero-gravity state, if the vehicle collides at this time, the occupant may dive and be at risk of the seat belt cutting his neck, which is undesirable from a safety perspective.

[0004] Furthermore, not limited to zero-pressure seats, certain usage postures of general vehicle seats may also lead to additional safety issues, for example, when the vehicle is involved in a collision.

[0005] It is known in the prior art that when there is a risk of collision, the backrest of the zero-pressure seat is reset to a preset angle to avoid the risk of collision safety caused by an excessively large backrest angle. However, these solutions have poor flexibility.

[0006] Therefore, a solution that can address the above problems is urgently needed. Summary of the invention

[0007] The purpose of the present application is to provide a method for pre-crash resetting of a vehicle seat, a control system for pre-crash resetting of a vehicle seat, a seat for a vehicle and a vehicle, which can overcome at least one defect in the prior art, thereby in particular being able to flexibly and efficiently achieve pre-crash resetting of the seat.

[0008] According to a first aspect of the present application, a method for pre-crash resetting of a vehicle seat is provided, wherein at least one of a seat cushion rotation angle and a backrest rotation angle of the seat can be changed by means of a resetting mechanism, and the method comprises:

[0009] Step S1: obtaining a pre-collision signal;

[0010] Step S2: In response to the pre-collision signal, determining the minimum movement amount of the reset mechanism required to reset the seat to the safe posture area according to the current posture of the seat, wherein the current posture of the seat includes a seat cushion rotation angle and a backrest rotation angle;

[0011] Step S3: According to the determined minimum movement amount, controlling the reset mechanism to reset the seat to a safe target posture, wherein the safe target posture is located in a safe posture area of ​​the seat or on a boundary of the safe posture area of ​​the seat.

[0012] According to one embodiment of the present application, the current posture of the seat also includes at least one of the front-to-back positioning of the seat, the up-and-down positioning of the leg rest, the front-to-back positioning of the leg rest and the rotation angle of the leg rest.

[0013] According to one embodiment of the present application, the safe posture range of the seat that can be reached by means of the restoring mechanism is related to the current posture of the seat.

[0014] According to one embodiment of the present application, the safe posture area of ​​the seat is determined by experiments and / or simulations and / or theoretical deductions and / or machine learning.

[0015] According to one embodiment of the present application, the reset mechanism is a backrest reset mechanism for changing the backrest rotation angle of the seat, wherein in step S2, the minimum movement amount of the backrest reset mechanism required to reset the seat to a safe posture area is determined, and in step S3, the backrest reset mechanism is controlled to reset the seat to a safe target posture.

[0016] According to one embodiment of the present application, the reset mechanism is a seat cushion reset mechanism for changing the seat cushion rotation angle of the seat, wherein in step S2, the minimum movement amount of the seat cushion reset mechanism required to reset the seat to a safe posture area is determined, and in step S3, the seat cushion reset mechanism is controlled to reset the seat to a safe target posture.

[0017] According to one embodiment of the present application, the reset mechanism includes a backrest reset mechanism for changing the rotation angle of the seat back and a cushion reset mechanism for changing the rotation angle of the seat cushion, wherein in step S2, the minimum movement amount required by the backrest reset mechanism and the seat cushion reset mechanism in order to reset the seat to a safe posture area is determined, and in step S3, the backrest reset mechanism and / or the seat cushion reset mechanism are controlled to reset the seat to a safe target posture.

[0018] According to one embodiment of the present application, in step S2 , the minimum movement amount is determined such that the time required to restore the current posture of the seat to the safe target posture is the shortest.

[0019] According to an embodiment of the present application, the minimum movement amount is determined in step S2 such that the larger one of the movement amount of the backrest returning mechanism and the movement amount of the seat cushion returning mechanism is minimized.

[0020] According to an implementation manner of the present application, the minimum movement amount is determined according to at least one of the power, transmission ratio, driving force, and response time of the backrest resetting mechanism and the seat cushion resetting mechanism.

[0021] According to one implementation of the present application, step S3 includes:

[0022] - generating control instructions for the reset mechanism according to the current posture of the seat and the determined minimum movement amount; and

[0023] - Sending control instructions to the reset mechanism.

[0024] According to one embodiment of the present application, the method includes, before step S1:

[0025] - determining whether there is an occupant on the seat and whether the seat is in a safe posture area, and obtaining a determination result;

[0026] - if the judgment result is that there is an occupant on the seat and the seat is not in a safe posture area, finding out whether the vehicle has a collision risk;

[0027] - Provides a pre-crash signal if it is determined that the vehicle is at risk of a collision and a pre-crash repositioning of the seat is required.

[0028] According to an implementation of the present application, whether the vehicle has a collision risk and whether a pre-collision reset of the seat is required is determined based on the time to collision TTC.

[0029] According to a second aspect of the present application, a control system for pre-crash resetting of a seat of a vehicle is provided, wherein the control system comprises:

[0030] at least one control unit; and

[0031] at least one memory unit coupled to the control unit, the memory unit being configured to store a series of computer executable instructions,

[0032] Wherein, when the series of computer executable instructions are executed by the control unit, the control unit executes the method according to the first aspect of the present application.

[0033] According to one embodiment of the present application, the at least one control unit includes a seat control module and / or an electronic control unit of the vehicle.

[0034] According to a third aspect of the present application, a seat for a vehicle is provided. The method according to the first aspect of the present application can be applied to the seat, wherein the seat comprises a reset mechanism, and at least one of a seat cushion rotation angle and a backrest rotation angle of the seat can be changed by means of the reset mechanism.

[0035] According to one embodiment of the present application, the fore-and-aft positioning of the seat is adjustable; and / or the seat includes a leg rest, and at least one of the up-and-down positioning, fore-and-aft positioning and rotation angle of the leg rest is adjustable.

[0036] According to an embodiment of the present application, the resetting mechanism includes a backrest resetting mechanism for changing a rotation angle of a seat back and / or a seat cushion resetting mechanism for changing a rotation angle of a seat cushion.

[0037] According to one embodiment of the present application, the seat includes two seat cushion adjusters for adjusting the rotation angle of the seat cushion, the two seat cushion adjusters are interconnected by a seat cushion adjustment synchronization rod, and the seat cushion reset mechanism is transmission connected to the seat cushion adjustment synchronization rod, and the seat cushion rotation angle of the seat can be changed with the help of the seat cushion reset mechanism.

[0038] According to one embodiment of the present application, the seat cushion returning mechanism includes at least one, preferably two seat cushion drives, and the seat cushion returning mechanism is configured to achieve a seat cushion returning angular velocity of at least 10° / s, preferably at least 20° / s.

[0039] According to one embodiment of the present application, the seat includes two backrest adjusters for adjusting the rotation angle of the backrest, the two backrest adjusters are interconnected by a backrest adjustment synchronization rod, and the backrest reset mechanism is transmission-connected to the backrest adjustment synchronization rod, and the backrest rotation angle of the seat can be changed with the aid of the backrest reset mechanism.

[0040] According to one embodiment of the present application, the backrest return mechanism comprises at least one, preferably two, backrest drives, and the backrest return mechanism is designed to enable a backrest return angular velocity of at least 10° / s, preferably at least 20° / s.

[0041] According to an embodiment of the present application, the seat includes a seat control module connected to the reset mechanism signal, and the seat control module is configured to:

[0042] - Get pre-collision signal;

[0043] - in response to the pre-crash signal, determining the minimum movement amount of the reset mechanism required to reset the seat to the safe posture area according to the current posture of the seat, wherein the current posture of the seat includes the rotation angle of the seat cushion and the rotation angle of the backrest; and

[0044] - According to the determined minimum movement amount, the reset mechanism is controlled to reset the seat to a safe target posture.

[0045] According to one embodiment of the present application, the seat control module is further configured to:

[0046] - generating control instructions for the reset mechanism based on the current posture of the seat and the safety target posture; and

[0047] - Send control commands to the reset mechanism.

[0048] According to one embodiment of the present application, the seat control module is further configured to:

[0049] - determining whether there is an occupant on the seat and whether the seat is in a safe posture area, and obtaining a determination result; and

[0050] - providing the determination result to an electronic control unit of the vehicle, or providing the determination result to an electronic control unit of the vehicle only when the determination result is that there is an occupant on the seat and the seat is not in a safe posture area.

[0051] According to the fourth aspect of the present application, a vehicle is proposed, which can implement the method described in the first aspect of the present application, and / or the vehicle includes the control system described in the second aspect of the present application, and / or the vehicle includes the seat described in the third aspect of the present application.

[0052] According to one embodiment of the present application, the vehicle includes an electronic control unit, which is communicatively connected to a seat control module, and the electronic control unit is configured to:

[0053] - Find out if the vehicle poses a collision risk;

[0054] - Provide a pre-crash signal to the seat control module if it is determined that the vehicle is at risk of a collision and a pre-crash reset of the seat is required.

[0055] According to one embodiment of the present application, the vehicle includes an SBR system and / or a pressure sensor for determining whether there is an occupant in the seat.

[0056] Other features of the present application are derived from the drawings and the specific embodiments. All the features and feature combinations mentioned above in the specification and the features and feature combinations mentioned below in the specific embodiments and / or shown separately in the drawings can be used not only in the corresponding given combination, but also in other combinations, or can be used alone. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] After reading the following detailed description in conjunction with the accompanying drawings, various aspects of the present application will be better understood, in which:

[0058] Figure 1 Schematically showing the distribution of traditional seat collision verification areas;

[0059] Figure 2 Schematically showing a conventional seat pre-crash reset schematic diagram;

[0060] Figure 3 Schematically showing the adjustable angles of the seat cushion and backrest;

[0061] Figure 4 Schematically illustrating a method for pre-crash resetting of a seat of a vehicle according to some embodiments of the present application;

[0062] Figure 5 Schematically illustrating a safe posture area of ​​a seat according to some embodiments of the present application;

[0063] Figure 6 Schematically shows the seat return movement logic with the aid of the backrest return mechanism only;

[0064] Figure 7 Schematically showing reference Figure 6 Seat return movement;

[0065] Figure 8 Schematically shows the seat return movement logic with the aid of the cushion return mechanism only;

[0066] Fig. 9 Schematically showing reference Figure 8 A seat return movement, wherein the seat cushion and the backrest of the seat are decoupled from each other in movement;

[0067] Fig.10Schematically showing reference Figure 8 A seat return movement, wherein the seat cushion and the backrest of the seat are movably coupled to each other;

[0068] Fig.11 Schematically showing the seat return movement logic with the aid of the backrest return mechanism and the seat cushion return mechanism;

[0069] Fig.12 Schematically shows a seat return movement by means of a backrest return mechanism and a seat cushion return mechanism, wherein the seat cushion and the backrest of the seat are movably coupled to each other;

[0070] Fig.13 Schematically showing the seat return movement logic with the aid of the backrest return mechanism and the seat cushion return mechanism;

[0071] Fig.14 Schematically illustrates a seat return movement by means of a backrest return mechanism and a seat cushion return mechanism, wherein the seat cushion and the backrest of the seat are decoupled from each other in terms of movement;

[0072] Fig.15 Schematically showing the seat return movement logic with the aid of the backrest return mechanism and the seat cushion return mechanism;

[0073] Fig.16 The steps for controlling the reset mechanism according to some embodiments of the present application are exemplarily shown;

[0074] Fig.17 Schematically illustrating a method for pre-crash resetting of a seat of a vehicle according to some embodiments of the present application;

[0075] Fig.18 A flow chart for generating a pre-collision signal is exemplarily shown;

[0076] Fig.19 A block diagram exemplarily shows a control system for pre-crash resetting of a seat of a vehicle according to some embodiments of the present application;

[0077] Fig. 20 A seat for a vehicle according to some embodiments of the present application is schematically shown. DETAILED DESCRIPTION

[0078] The present application will be described below with reference to the accompanying drawings, wherein the accompanying drawings illustrate several embodiments of the present application. However, it should be understood that the present application can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present application more complete and fully explain the scope of protection of the present application to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0079] It should be understood that the same reference numerals represent the same elements throughout the drawings. In the drawings, the dimensions of certain features may be distorted for clarity.

[0080] It should be understood that the terms used in the specification are only used to describe specific embodiments and are not intended to limit the present application. All terms (including technical terms and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of simplicity and / or clarity, well-known functions or structures may not be described in detail.

[0081] The present application is not limited to the embodiments shown, but includes or extends to all technical equivalents that may fall within the effective scope of the appended claims. The position descriptions selected in the specification, such as top, bottom, left, right, etc., refer to the direct description and the drawings shown and can be transferred to the new position according to the meaning when the position changes.

[0082] Although some aspects are described in association with a device, it should be understood that these aspects are also descriptions of the corresponding methods, so that a unit of the device or a device of the system can also be understood as a corresponding method step or a feature of the method step. Similarly, aspects described in association with a method step or as a method step are also descriptions of corresponding units or details or features of the corresponding device.

[0083] Figure 1 The diagram schematically shows the distribution of traditional seat collision verification areas. Traditionally, the posture of the seat 1 can be generally divided into the following three intervals according to the angle of the backrest 2 of the seat 1, especially the zero-pressure seat, relative to the vertical line V (referred to as the backrest rotation angle herein): driving posture interval A1 (schematically represented as the area A1 between the vertical line V and the dotted line L1), comfort adjustment interval A2 (schematically represented as the area A2 between the dotted line L1 and the dotted line L2), and zero gravity interval A3 (schematically represented as the area A3 between the dotted line L2 and the dotted line L3). Figure 1 With reference to the vertical line V, the driving posture interval A1 may correspond to an angle range from 0° to an angle α1, the comfort adjustment interval A2 may correspond to an angle range from an angle α1 to an angle α2, and the zero gravity interval A3 may correspond to an angle range from an angle α2 to an angle α3.

[0084] In traditional seat design, the comfort adjustment interval A2 has generally passed the collision safety verification, so it is relatively safe to meet the collision within the comfort adjustment interval A2. However, when the seat 1 is in the zero gravity interval A3, due to the large rotation angle of the backrest, there may be a risk of occupants diving and the seat belt cutting their necks in the event of a collision. Therefore, in the traditional pre-collision reset system, the backrest rotation angle of the seat 1 is generally adjusted from the zero gravity interval A3 to a preset angle within the comfort adjustment interval A2, so as to meet the collision in a relatively safe posture. Such a preset angle can be, for example, 40°. In addition, if Figure 2 As shown, in some other pre-crash reset systems, the backrest 2 of the seat 1 in the zero gravity interval A3 can be rotated by a preset angle α4 during reset, so that the backrest rotation angle of the seat 1 enters the comfort adjustment interval A2 from the zero gravity interval A3. Figure 1 , the preset angle α4 may be the difference between α3 and α2. However, the flexibility of these solutions is relatively poor.

[0085] In addition, if Figure 3 As shown, in the seat 1 of the vehicle, in order to provide the occupants with a better riding experience and adapt to different personalized needs, it is possible that not only the rotation angle θ of the backrest 2 is adjustable, but also parameters such as the rotation angle φ of the seat cushion 3, the front-to-back positioning x of the seat, and even (if any) the upper and lower positioning of the leg rest, the front-to-back positioning of the leg rest, and the rotation angle of the leg rest are also adjustable. The present application recognizes that these adjustable parameters will also affect the collision safety of the seat, and the solution of only resetting the backrest 2 of the seat 1 to a certain angle or to a preset angle during pre-collision processing may not meet the safety requirements of the seat 1.

[0086] Figure 4 A method 100 for pre-crash resetting of a seat 1 for a vehicle according to some embodiments of the present application is exemplarily shown. Here, at least the seat cushion rotation angle φ and the backrest rotation angle θ of the seat 1 are adjustable, so that the occupant can adjust the use posture of the seat 1 as required. The seat cushion rotation angle φ and the backrest rotation angle θ of the seat 1 can be adjusted, for example, manually and / or electrically. In order to achieve the pre-crash resetting of the seat 1, at least one of the seat cushion rotation angle φ and the backrest rotation angle θ of the seat 1 can be changed by means of a resetting mechanism. The resetting mechanism can be any mechanism and device that can change the seat cushion rotation angle φ and / or the backrest rotation angle θ at a desired speed in the pre-crash process. Since the time window of the pre-crash process is generally short (for example, at most 2 seconds), the resetting mechanism should generally be able to quickly change the seat cushion rotation angle φ and / or the backrest rotation angle θ to complete the pre-crash resetting in time, and the resetting speed can be significantly higher than the adjustment speed of each component when the seat 1 is used under normal circumstances.

[0087] The method 100 includes:

[0088] Step S1: obtaining a pre-collision signal;

[0089] Step S2: in response to the pre-collision signal, determining the minimum movement amount required for the reset mechanism to reset to the safe posture area of ​​the seat according to the current posture of the seat, wherein the current posture of the seat includes a seat cushion rotation angle and a backrest rotation angle; and

[0090] Step S3: According to the determined minimum movement amount, controlling the reset mechanism to reset the seat to a safe target posture, wherein the safe target posture is located in a safe posture area of ​​the seat or on a boundary of the safe posture area of ​​the seat.

[0091] The pre-collision signal may indicate that the vehicle may collide or is about to collide. The pre-collision signal may be understood as a signal for triggering the pre-collision reset of the seat 1. The pre-collision signal may be generated in a variety of ways. The generation and transmission of the pre-collision signal will be discussed later. Fig.17 and Fig.18 Elaborate in more detail.

[0092] After obtaining the pre-collision signal, the current posture of the seat 1 can be determined in step S2. Since the seat cushion rotation angle φ and the backrest rotation angle θ of the seat 1 are adjustable, the current posture of the seat 1 can include the seat cushion rotation angle φ and the backrest rotation angle θ. In other embodiments, the current posture of the seat 1 can also include at least one of the seat front-to-back positioning x, the leg rest up-down positioning, the leg rest front-to-back positioning and the leg rest rotation angle. These parameters can be determined, for example, by corresponding sensors and / or based on signals from corresponding actuators (e.g., actuators for the seat cushion 3, actuators for the backrest 2, actuators for the leg rest, etc.).

[0093] In the present application, the minimum movement amount required by the reset mechanism in order to reset the seat 1 to its safe posture area can be determined based on the current posture of the seat 1. The posture of the seat 1 after reset, which is reached by the reset mechanism moving the minimum movement amount, can be called the safe target posture of the seat 1. In other words, the safe target posture can also be understood as the target posture of the reset movement of the seat 1, and the seat 1 should be reset to the safe target posture with the help of the reset mechanism. It can be understood that there may be a certain safe posture area for the seat 1, and as long as the posture of the seat 1 is within the safe posture area, the seat 1 is relatively safe when facing a collision. Each adjustable parameter of the seat 1 may affect the collision safety of the seat 1, so in a broader sense, the safe posture area of ​​the seat 1 can be, for example, one or more domains in a multidimensional space composed of the various adjustable parameters of the seat 1.

[0094] The meaning of the safe posture area of ​​the seat 1 is explained in more detail below in conjunction with a simple case. Figure 5 The schematic diagram of the safe posture area AS composed of the seat cushion rotation angle φ and the backrest rotation angle θ is shown as an example. Here, the ordinate represents the angle φ of the seat cushion 3 relative to the horizontal line, which gradually increases from bottom to top; the abscissa represents the angle θ of the backrest 2 relative to the vertical line, which gradually increases from left to right. max Indicates the maximum adjustable angle of the seat cushion 3, φ max The grayscale area AN above represents the unoccupied area of ​​the seat 1, or the unreachable posture of the seat 1; accordingly, φ max The following area here can represent the accessible posture of the seat 1, and the accessible posture can be understood as the posture that the seat can be adjusted and reached. In the accessible posture of the seat 1, the danger area AD and the safe posture area AS are divided by the safety boundary line L. Here, the danger area AD represented by the hatched line can be understood as the seat posture with a higher safety risk for collision. Typically, the zero gravity posture of the seat can be located in the danger area AD on the right side of the figure. The danger area AD on the left side of the figure can, for example, correspond to a posture with a large seat cushion rotation angle φ and a small backrest rotation angle θ. In the event of a collision, this posture may also have a higher safety risk. The safe posture area AS can be understood as a posture of the seat 1 that is relatively safe for collision. It can be seen from the figure that for different seat cushion rotation angles φ, the range of backrest rotation angles θ that are considered "safe" is different. Correspondingly, for different backrest rotation angles θ, the seat cushion rotation angles φ that are considered "safe" are also different.

[0095] Figure 5 The situation in can be deduced accordingly to the multi-dimensional space composed of the various adjustable parameters of the seat 1. It can be understood that the spatial dimension of the safe posture area of ​​the seat 1 is not necessarily equal to the number of adjustable parameters of the seat 1. For example, for Figure 3 For the seat 1 shown in FIG. 1 , in which the seat cushion rotation angle φ, the backrest rotation angle θ, and the seat fore-and-aft position x are all adjustable, when the correlation between the seat fore-and-aft position x and the seat collision safety is low, only the seat cushion rotation angle φ and the backrest rotation angle θ may be considered when setting the safety posture area of ​​the seat 1, so as to obtain, for example, Figure 5 The two-dimensional safe posture area is shown. In the case where the correlation between the fore-aft positioning x of the seat and the seat collision safety is high, the fore-aft positioning x of the seat can be taken into consideration to obtain a three-dimensional safe posture area. The safe posture area AS can be determined in a variety of ways, for example, by safety collision tests and / or simulations and / or theoretical deductions. Alternatively or additionally, the safe posture area AS can be determined with the aid of machine learning. When determining the safe posture area, the installation environment of the seat 1 (such as the internal space structure of the vehicle) and the characteristics of the reset mechanism can also be taken into consideration.

[0096] In the present application, by setting the safety posture area AS, it is possible to advantageously take into account the seat cushion rotation angle φ and the backrest rotation angle θ of the seat 1 and, if necessary, the influence of the combination of other adjustable parameters (such as the fore-and-aft positioning of the seat, the up-and-down positioning of the leg rest, the fore-and-aft positioning of the leg rest, the leg rest rotation angle, etc.) on the collision safety of the seat 1, so as to perform pre-collision reset of the seat 1 in a targeted manner.

[0097] In the present application, the safety target posture that the seat 1 finally reaches can be located in the safety posture area AS of the seat 1 or on the boundary of the safety posture area AS of the seat 1. In step S2, the minimum movement amount of the reset mechanism required to reset to the safety posture area AS of the seat 1 can be advantageously determined. The minimum movement amount of the reset mechanism can be understood as the shortest distance that the reset mechanism needs to travel in order to reset the seat 1 from the current posture to the safety posture area of ​​the seat or the corresponding safety target posture. Since the reset stroke is positively correlated with the time required for reset, the minimum movement amount of the reset mechanism can also be understood as the shortest time required for reset. In this way, the seat 1 can be reliably and quickly reset to a safe posture in a short pre-collision processing time window.

[0098] In some embodiments, the reset mechanism may be a backrest reset mechanism for changing the backrest rotation angle θ of the seat 1. For example, when the seat 1 is only equipped with a backrest reset mechanism, the minimum amount of movement required by the backrest reset mechanism in order to reset the seat to the safe posture area AS can be determined in step S2, so that the seat can be reset from the current posture to the safe target posture of the seat 1 by means of the backrest reset mechanism, in particular, only by means of the backrest reset mechanism. Figure 6 The point P1 in the figure and the horizontal arrows therewith exemplarily represent this situation. The point P1 may represent the current posture P1 of the seat 1, wherein the current seat cushion rotation angle φ and the backrest rotation angle θ of the seat 1 may both be large, and the seat 1 is currently in the danger zone AD. Considering that the seat 1 is only equipped with a backrest reset mechanism, when the backrest reset mechanism is used for reset, only the backrest rotation angle θ changes, so as to refer to Figure 6 , the posture of the seat 1 can only move on the horizontal line passing through the current posture P1. Here, the safe target posture of the seat 1 can be, for example, a point P1S located on the safety boundary line L, where there is a minimum movement amount of the backrest reset mechanism between the safe target posture P1S and the current posture P1. The horizontal arrow from point P1 to point P1S can represent the reset movement of the seat 1. It can be seen that the seat 1 can be reset from the current posture P1 to the safe target posture P1S by only changing the backrest rotation angle θ of the seat 1.

[0099] Figure 7The return movement of the seat 1 from the current posture P1 to the safe target posture P1S which is achieved only by means of the backrest return mechanism is schematically shown. Figure 7 The left figure in FIG. 1 may correspond to the current posture P1 of the seat 1, with the backrest 2 forming an angle θ1 relative to the vertical line V; and Figure 7 The right figure in FIG. 1 may correspond to the safety target posture P1S of the seat 1, wherein the backrest 2 forms an angle θ with respect to the vertical line V. 1S The backrest 2 of the seat 1 can be rotated by an angle θ1-θ by means of the backrest reset mechanism. 1S To achieve the reset of the seat 1, the rotation angle of the seat cushion 3 of the seat 1 remains unchanged. 1S Corresponds to the minimum movement required by the backrest reset mechanism to achieve seat reset.

[0100] It is understood that for the seat 1 in the current position P1 and provided only with a backrest return mechanism, not all positions in the safe position range AS are reachable (only with the aid of the backrest return mechanism). Figure 6 The dotted line in FIG schematically represents the reachable safe posture range corresponding to the current posture P1. In addition, Figure 6 Another current posture P2 of the seat 1 is schematically shown, and its backrest rotation angle θ is substantially the same as P1, but its seat cushion rotation angle φ is smaller than P1. It can be seen that for the current posture P2, its reachable safe posture range (i.e., backrest rotation angle range) represented by the dotted line is significantly larger than the backrest rotation angle range corresponding to the reachable safe posture range of P1. In other words, the reachable safe posture range of the seat 1 may be related to the current posture of the seat 1. For the current posture P2 of the seat 1, for example, the corresponding minimum action amount of the reset mechanism (the arrow to the left from P2) and the corresponding safe target posture P2S reached by the corresponding action of the reset mechanism can be determined.

[0101] In other embodiments, the reset mechanism may be a cushion reset mechanism for changing the cushion rotation angle φ of the seat 1. For example, when the seat 1 is only equipped with a cushion reset mechanism, the minimum movement amount of the cushion reset mechanism required to reset the seat to the safe posture area AS can be determined in step S2, so that the seat can be reset from the current posture to the safe target posture of the seat 1 by means of the cushion reset mechanism, in particular, only by means of the cushion reset mechanism. Figure 8 Point P3 in FIG. 1 and the arrow associated therewith exemplarily represent this situation. Point P3 may represent the current posture of the seat 1 , in which the seat 1 may have a large seat cushion rotation angle φ and a small backrest rotation angle θ, and the seat 1 is currently in the danger zone AD.

[0102] When the seat cushion 3 and the backrest 2 of the seat 1 are decoupled from each other in motion, changing the seat cushion rotation angle φ will not cause the backrest 2 to move or change the backrest rotation angle θ. When the seat cushion is reset only with the aid of the seat cushion reset mechanism, only the seat cushion rotation angle φ changes, so that Figure 8 , the posture of the seat 1 can only move on the vertical line passing through the current posture P3. Here, the minimum movement amount of the seat cushion reset mechanism can be represented by a vertical downward arrow starting from P3. The safe target posture of the seat 1 can be, for example, point P3S located on the safety boundary line L, and the longitudinal arrow from point P3 to point P3S can also represent the reset movement of the seat 1. It can be seen that here, only the seat cushion rotation angle φ of the seat 1 needs to be changed to reset the seat 1 from the current posture P3 to the safe target posture P3S. Fig. 9 The resetting movement of the seat 1 which is carried out in this case solely with the aid of the seat cushion resetting mechanism is schematically shown. Fig. 9 The left figure in FIG. 1 may correspond to the current posture P3 of the seat 1, wherein the seat cushion 3 forms an angle φ3 with respect to the horizontal line H; and Fig. 9 The right figure in FIG. 1 may correspond to the safety target posture P3S of the seat 1, wherein the seat cushion 3 forms an angle φ with respect to the horizontal line H. 3S The seat cushion 3 of the seat 1 can be rotated by an angle of φ3-φ by means of the seat cushion reset mechanism. 3S To achieve the reset of the seat 1, the angle of the backrest 2 of the seat 1 remains unchanged. Here, the angle of the seat cushion reset mechanism is φ3-φ 3S Corresponds to the minimum movement required by the seat cushion reset mechanism to achieve seat reset.

[0103] When the seat cushion 3 and the backrest 2 of the seat 1 are coupled to each other in motion, changing the seat cushion rotation angle φ will simultaneously cause a change in the backrest rotation angle θ. When the seat cushion is reset only by means of the seat cushion reset mechanism, only the seat cushion rotation angle φ and the backrest rotation angle θ change synchronously, so that Figure 8 , the posture of the seat 1 can only move on the oblique line passing through the current posture P3. Here, the minimum movement amount of the seat cushion reset mechanism can be represented by an arrow starting from P3 and pointing to the lower left. At this time, the safe target posture of the seat 1 can be, for example, point P3S' located on the safety boundary line L, and the inclined arrow from point P3 to point P3S' can also represent the reset movement of the seat 1. It can be seen that in the reset movement from the current posture P3 to the safe target posture P3S', not only the seat cushion rotation angle φ changes, but also the backrest rotation angle θ changes. Fig.10 The resetting movement of the seat 1 which is carried out in this case solely with the aid of the seat cushion resetting mechanism is schematically shown. Fig.10 The left figure in FIG. 1 may correspond to the current posture P3 of the seat 1, wherein the seat cushion 3 forms an angle φ3 with respect to the horizontal line H, and the backrest 2 forms an angle θ3 with respect to the vertical line V; and Fig.10The right figure in the figure can correspond to the safety target posture P3S' of the seat 1. The seat cushion 3 and the backrest 2 of the seat 1 can be synchronously rotated by an angle φ3-φ 3S 'To realize the reset of the seat 1, the seat cushion 3 of the seat 1 reaches the angle φ 3S ', and the backrest 2 reaches an angle θ 3S Here, the angle of rotation of the seat cushion reset mechanism is φ3-φ 3S ' corresponds to the minimum amount of movement required by the cushion reset mechanism to achieve seat reset.

[0104] For example, Figure 8 In the case of a seat cushion reset mechanism, the range of restoring motion and its form that can be achieved only with the help of the seat cushion reset mechanism may be relatively limited. To deal with this situation, the accessible posture of the seat 1 when in use can be set in a targeted manner to avoid the risk of not being able to reset to the safe posture area AS with the help of the seat cushion reset mechanism. Figure 8 In the figure, the gray area AN representing the unreachable posture of seat 1 can be relative to Figure 5 and Figure 6 Bigger.

[0105] In some other embodiments, the reset mechanism may include a backrest reset mechanism for changing the backrest rotation angle θ of the seat 1 and a cushion reset mechanism for changing the seat cushion rotation angle φ of the seat 1. In step S2, the minimum movement amount required by the backrest reset mechanism and the cushion reset mechanism in order to reset to the safe posture area AS of the seat can be determined, so that the seat 1 can be reset from the current posture to the determined safe target posture with the help of the backrest reset mechanism and the cushion reset mechanism. There may also be the following two situations: the seat cushion 3 and the backrest 2 of the seat 1 are decoupled from each other in motion, and the seat cushion 3 and the backrest 2 of the seat 1 are coupled to each other in motion.

[0106] Combine the following Fig.11 and Fig.12 The situation in which the seat cushion 3 and the backrest 2 of the seat 1 are movably coupled to each other will be described in detail.

[0107] Fig.11Point P4 in the figure exemplarily represents the current posture of the seat 1. Since there are not only a backrest reset mechanism but also a seat cushion reset mechanism, there may be multiple reset movement possibilities for the current posture P4, which are represented by various arrows. For example, the movement from the current posture P4 to the posture P4S (schematically represented by a dotted arrow pointing from P4 to P4S) can be realized, for example, only by means of the backrest reset mechanism. The movement from the current posture P4 to the posture P4S' (schematically represented by a dotted arrow pointing from P4 to P4S') needs to be realized by the cooperation between the backrest reset mechanism and the seat cushion reset mechanism. The seat cushion 3 and the backrest 2 of the seat 1 are coupled to each other in motion, so the movement realized by the seat cushion reset mechanism can be represented by a solid arrow tilted to the lower left, and the movement realized by the backrest reset mechanism is represented by a horizontal solid arrow connected to the arrow. Here, although the two solid arrows are connected to each other, this does not indicate the temporal relationship between the two, but only indicates that the two jointly realize the reset movement of the seat 1 from P4 to P4S'.

[0108] Fig.12 The diagram schematically shows the return movement of the seat 1 which is jointly achieved by the backrest return mechanism and the seat cushion return mechanism when the seat cushion 3 and the backrest 2 of the seat 1 are movably coupled to each other. Fig.12 The left figure in FIG. 4 may correspond to the current posture P4 of the seat 1 , wherein the seat cushion 3 forms an angle φ4 with respect to the horizontal line H, and the backrest 2 forms an angle θ4 with respect to the vertical line V. Fig.12 The right figure in the figure can correspond to the safe target posture of the seat 1. Here, the seat cushion 3 and the backrest 2 can be rotated by an angle β by means of the seat cushion reset mechanism, so that the seat cushion 3 reaches the angle φ4' in the right figure. In addition, the backrest 2 is also additionally rotated by an angle γ by means of the backrest reset mechanism, so that the backrest 2 reaches the angle θ4' in the right figure.

[0109] Combine the following Fig.13 and Fig.14 The situation where the seat cushion 3 and the backrest 2 of the seat 1 are decoupled from each other in terms of movement will be described in detail.

[0110] Fig.13Point P5 in the figure exemplarily represents the current posture of the seat 1. Since there is not only a backrest reset mechanism but also a seat cushion reset mechanism, there may be multiple reset movement possibilities for the current posture P5, which are represented by various arrows. For example, the movement from the current posture P5 to the posture P5S' can be achieved, for example, only by means of the backrest reset mechanism, which can be represented by a dotted arrow pointing from P5 to P5S'. The movement from the current posture P5 to the posture P5S'' can be achieved, for example, only by means of the seat cushion reset mechanism, which can be represented by a dotted arrow pointing from P5 to P5S''. The movement from the current posture P5 to the posture P5S (schematically represented by a dotted arrow pointing from P5 to P5S) needs to be achieved by the backrest reset mechanism and the seat cushion reset mechanism cooperating with each other. The seat cushion 3 and the backrest 2 of the seat 1 are decoupled from each other in motion here, so the movement achieved by the backrest reset mechanism can be represented by a horizontal solid arrow pointing to the left, and the movement achieved by the seat cushion reset mechanism can be represented by a vertical solid arrow pointing upward. Here, although the two solid arrows are connected to each other, this does not indicate a temporal sequence between the two arrows, but only indicates that the two arrows together realize the resetting movement of the seat 1 from P5 to P5S.

[0111] Fig.14 The schematic diagram shows that the seat 1 is moved from the backrest 2 to the backrest 3 of the seat 1, which is realized by the backrest resetting mechanism and the seat cushion resetting mechanism. Fig.13 The current posture P5 in the reset movement to the safe target posture P5S. Fig.14 The left figure in FIG. 1 may correspond to the current posture P5 of the seat 1 , wherein the seat cushion 3 forms an angle φ5 relative to the horizontal line H, and the backrest 2 forms an angle θ5 relative to the vertical line V. Fig.14 The right figure in the figure can correspond to the safe target posture P5S of the seat 1. Here, the seat cushion 3 can be rotated by an angle β by means of the seat cushion reset mechanism, so that the seat cushion 3 reaches the angle φ in the right figure. 5S The backrest 2 can be rotated by an angle γ by means of the backrest reset mechanism, so that the backrest 2 reaches the angle θ shown in the right figure. 5S .

[0112] Considering that the backrest reset mechanism and the seat cushion reset mechanism can be operated at the same time, in some embodiments, it can be provided, for example, that the minimum movement amount is determined in step S2 so that the time required for resetting from the current posture of the seat to the safe target posture is the shortest. To this end, in some embodiments, the backrest reset mechanism movement amount and the seat cushion reset mechanism movement amount required to reach the safe posture from the current posture can be determined for each safe posture located in the safe posture area AS and on the safe boundary line L. For each safe posture, the larger of the corresponding backrest reset mechanism movement amount and the seat cushion reset mechanism movement amount can be regarded as the reset mechanism movement amount required to reach the safe posture, because (for example, when the reset speeds of the backrest reset mechanism and the seat cushion reset mechanism are substantially the same) the larger of the backrest reset mechanism movement amount and the seat cushion reset mechanism movement amount will restrict the required reset time. Subsequently, the safe posture with the smallest reset mechanism movement amount can be selected as the safe target posture of the seat 1.

[0113] In addition, in some embodiments, the minimum movement amount and the safe target posture can be determined by taking into account at least one of the power, transmission ratio, driving force, and response time of the backrest reset mechanism and the seat cushion reset mechanism. Because these parameters may also affect the time required for reset. Specifically, for example, in the case where the seat cushion 3 and the backrest 2 of the seat 1 are decoupled from each other in motion, such as Fig.15 As shown, when the seat 1 is in the current posture P6, there may be a minimum movement amount of the reset mechanism between the current posture P6 and the posture P6S. However, the reset speed of the backrest reset mechanism of the seat 1 may be relatively low, resulting in failure to reset to the posture P6S within the specified reset time, while the reset speed of the seat cushion reset mechanism of the seat 1 is large enough, so there is no such problem. In view of this situation, the seat can be reset from posture P6 to posture P6S', for example, taking into account the reset speeds of the backrest reset mechanism and the seat cushion reset mechanism. It can be seen that compared with posture P6S, the amount of backrest reset action required to reset to posture P6S' is smaller, which allows the backrest reset mechanism to complete the reset action within the specified reset time. Although the amount of cushion reset action required to reset to posture P6S' is larger than that of P6S, since the seat cushion reset mechanism has a sufficient reset speed, the seat cushion reset mechanism can still complete the reset action within the specified reset time.

[0114] In various embodiments, the determined safe target posture does not necessarily have to be located on the boundary L of the safe posture area AS of the seat 1. In some cases, the safe target posture may also be located within the safe posture area AS of the seat 1.

[0115] In order to realize the control of the reset mechanism, such as Fig.16 As shown, in some embodiments, step S3 may include:

[0116] Step S31: generating a control instruction for the reset mechanism according to the current posture of the seat and the determined minimum movement amount; and

[0117] Step S32: Sending a control instruction to the reset mechanism.

[0118] Within the scope of the present application, the pre-crash seat resetting achieved by method 100 does not exclude any acceptable deviations from the determined minimum movement amount and safety target posture due to design or manufacturing defects, device or component tolerances, algorithm accuracy, environmental influences and / or other factors.

[0119] Combine the following Fig.17 and Fig.18 The example of FIG. 1 further illustrates the generation and transmission of the pre-crash signal. Fig.17 The steps of method 100 according to some embodiments of the present application are exemplarily shown. Fig.18 The flowchart for generating a pre-collision signal is shown as an example. Fig.17 As shown, in some embodiments, method 100 may include, before step S1:

[0120] Step S01: Determine whether there is an occupant in seat 1 and whether seat 1 is in a safe posture area, and obtain a determination result; here, "the seat is in a safe posture area" may include a situation where the seat is in a safe posture area or on the boundary of a safe posture area.

[0121] Step S02: if the judgment result is that there is an occupant on the seat and the seat is not in a safe posture area, finding out whether the vehicle has a collision risk;

[0122] Step S03: When it is determined that the vehicle has a collision risk and a pre-collision reset of the seat is required, a pre-collision signal is provided.

[0123] In some embodiments, in order to determine whether there is an occupant on the seat 1, a pressure sensor may be installed on the seat 1, such as its backrest 2 and / or seat cushion 3, and the pressure sensor is used to monitor the pressure applied to the seat 1. Whether there is an occupant on the seat 1 can be determined based on the pressure value monitored by the pressure sensor. For example, the pressure value monitored by the pressure sensor can be compared with a preset pressure (e.g., 200N). If it is greater than the preset pressure, it can be determined that there is an occupant on the seat 1, otherwise it can be determined that there is no occupant on the seat 1. Alternatively or additionally, in some embodiments, the vehicle may include an SBR (Safety Belt Reminder) system, and the SBR system can be used to determine whether there is an occupant on the seat 1.

[0124] In some embodiments, the electronic control unit of the vehicle, especially the electronic control unit of the automatic emergency braking system, can determine whether the vehicle has a collision risk. The automatic emergency braking system is a vehicle active safety technology system, which mainly includes three modules, namely the control module (electronic control unit), the ranging module and the braking module. The core of the ranging module is microwave radar, face recognition technology and video system, etc., which can provide road safety, accurate and real-time images and road conditions information. The automatic emergency braking system uses radar to measure the distance of the vehicle in front or the obstacle, and then compares the measured distance with the alarm distance and the safety distance. When it is less than the alarm distance, an alarm prompt (such as light alarm, sound alarm, etc.) will be issued. When it is less than the safety distance, emergency braking will be triggered, so that the vehicle will automatically brake, thereby ensuring the safety of the vehicle. The automatic emergency braking system can be an existing system on the vehicle, and its structure and principle will not be repeated here.

[0125] In some embodiments, the automatic emergency braking system can use an algorithm based on TTC (Time to Collision) to achieve automatic braking to avoid collisions or mitigate the consequences of collisions. TTC is an indicator based on the relative speed and distance between vehicles or between vehicles and obstacles. It represents the time required to collide with the vehicle or obstacle in front under the current speed and acceleration conditions. By calculating TTC and judging whether emergency braking needs to be triggered based on preset thresholds, the magnitude of the braking force can be adjusted according to the TTC value to meet different emergency braking needs. Fig.18 In the embodiment, a collision signal can be provided when TTC is less than a first threshold and greater than a second threshold. The first threshold can be, for example, a threshold for triggering vehicle emergency braking, such as 1-1.5 seconds; and the second threshold can be, for example, a pre-collision reset time of a seat, such as 0.7 seconds.

[0126] In some embodiments, step S01 may be implemented, for example, by a seat control module for seat 1. The judgment result of whether there is an occupant on the seat and whether the seat is in a safe posture area may be directly provided to an electronic control unit of an automatic emergency braking system of the vehicle. Fig.18 As shown in , the seat control module can provide the judgment result to the electronic control unit of the vehicle only when the judgment result is that there is an occupant on the seat 1 and the seat 1 is not in the safe posture area. Fig.18 In the embodiment of the present invention, it can be first determined whether there is an occupant on the seat. If the situation is yes, it can be further determined whether the seat is in a safe posture area; if the situation is no, the method according to the present application can be directly terminated. Further, if it is determined that the seat is in a safe posture area, there is no seat reset requirement, and the method according to the present application can be terminated. If the seat is not in a safe posture area, the method can continue.

[0127] Afterwards, if Fig.18 As shown, it is possible to identify whether there is a risk of collision and, for example, determine whether a pre-collision signal needs to be provided based on TTC. Fig.18 The various steps circled in the dotted box can be implemented on the vehicle side or by the vehicle's automatic emergency braking system. Specifically, the vehicle can find out whether there is a collision risk, for example, whether the collision risk exists based on whether the TTC is less than a predetermined collision TTC threshold. If there is no collision risk, the method according to the present application can be terminated. If there is a collision risk, it can be further determined, for example, whether a pre-collision reset of the seat is required. For example, this can be determined based on whether the TTC is within a predetermined threshold range. As explained above, it can be determined whether the TTC is less than a first threshold and greater than a second threshold TTC. If the situation is not, there is no need to perform a pre-collision reset of the seat, and the vehicle can, for example, provide an early warning reminder through indicator lights, sounds, and vibrations. Further, it can be determined whether the collision risk of the entire vehicle is eliminated. If the situation is yes, the method can be terminated; if the situation is no, continue to monitor whether the TTC is less than the first threshold and greater than the second threshold TTC. If the judgment result of whether TTC is less than the first threshold and greater than the second threshold TTC is yes, it means that the seat needs to be pre-collision reset. Therefore, in step S03, the pre-collision signal can be sent to the seat control module by the electronic control unit of the vehicle's automatic emergency braking system, the automatic driving unit, or the auxiliary driving unit after judging the collision risk. Fig.19 A block diagram of a control system 200 for pre-crash resetting of a seat 1 of a vehicle according to some embodiments of the present application is exemplarily shown. The control system 200 may include at least one control unit 210 and at least one storage unit 220 coupled to the control unit 210. The storage unit 220 may be configured to store a series of computer executable instructions, wherein the series of computer executable instructions, when executed by the control unit 210, may cause the control unit 210 to execute the method 100 described above.

[0128] In some embodiments, the at least one control unit 210 may include a seat control module 211 for the seat 1 and / or include an electronic control unit 212 of the vehicle, in particular an electronic control unit 212 of an automatic emergency braking system. The various steps of the method 100 described above may be implemented by the at least one control unit 210, in particular the seat control module 211 and / or the electronic control unit 212, for example, in a distributed or centralized manner.

[0129] In some embodiments, step 2 of determining the minimum amount of movement required for the reset mechanism to reset to the safety posture area of ​​the seat according to the current posture of the seat can be implemented, for example, by a table lookup method. Specifically, the correspondence between each posture of the seat and the corresponding minimum amount of movement of the reset mechanism and / or the safety target posture can be pre-recorded in a lookup table, for example, and the lookup table can be stored in the at least one storage unit 220. When implementing step S2, the posture in the lookup table that is closest to the current posture of the seat can be selected, and the minimum amount of movement of the reset mechanism corresponding to the posture in the lookup table can be used as the minimum amount of movement determined in step S2.

[0130] Combine the following Fig. 20 Some embodiments of a seat 1 for a vehicle according to the present application are described. The previously described method 100 for pre-crash resetting of a seat 1 for a vehicle is particularly applicable to such a seat 1. Here, at least the seat cushion rotation angle φ and the backrest rotation angle θ of the seat 1 (see Figure 3 ) is adjustable. In some embodiments, the seat is positioned forward and backward x (see Figure 3 ) is also adjustable. Some seats 1 may include a leg rest, at least one of the up-down positioning, the fore-aft positioning, and the rotation angle of the leg rest of the seat 1 is adjustable. The current posture of the seat 1 may be defined at least by the seat cushion rotation angle φ and the backrest rotation angle θ (and by other adjustable parameters if necessary).

[0131] The seat 1 includes a return mechanism by means of which at least one of a seat cushion rotation angle φ and a backrest rotation angle θ of the seat 1 can be changed so as to achieve pre-crash return of the seat 1 when necessary. Fig. 20 The left side of FIG. 1 shows an exploded view of the reset mechanism 11 , which may include a backrest reset mechanism 12 for changing a backrest rotation angle θ of the seat 1 and / or a seat cushion reset mechanism 13 for changing a seat cushion rotation angle φ of the seat 1 . Fig. 20 The right side of the figure shows a schematic diagram of the reset mechanism 11 in the assembled state, in which only the frame of the seat 1 is shown, while the seat foaming and covering fabrics are not shown.

[0132] The seat 1 may include two backrest recliners 50a and 50b for adjusting the backrest rotation angle θ, and the two backrest recliners 50a and 50b may be interconnected via a backrest adjustment synchronization rod 20. When the seat 1 is in use, the backrest rotation angle θ may be adjusted with the aid of the backrest recliners 50a and 50b. In addition, the seat 1 may also include two cushion recliners 60a and 60b for adjusting the seat cushion rotation angle φ, and the two cushion recliners 60a and 60b may be interconnected via a cushion adjustment synchronization rod 80. When the seat 1 is in use, the seat cushion rotation angle φ may be adjusted with the aid of the cushion recliners 60a and 60b. It is understood that, for example, in the case where the backrest 2 is mounted on the seat cushion 3, the movement of the seat cushion 3 will also cause the movement of the backrest 2 at the same time.

[0133] like Fig. 20 As shown, a backrest reset mechanism 12 can be connected to the backrest adjustment synchronization rod 20, and the backrest reset mechanism 12 can drive the backrest adjustment synchronization rod 20 to rotate to change the backrest rotation angle θ. The backrest reset mechanism 12 can include at least one, here two backrest drivers 10a and 10b, and if necessary, the backrest reset mechanism 12 can also include corresponding transmission mechanisms, such as reducers, etc. In order to achieve rapid reset of the seat 1, the backrest drivers 10a, 10b and the corresponding transmission mechanisms can be selected in a targeted manner so that the backrest reset angular velocity of at least 10° / s, preferably at least 20° / s can be achieved. For this purpose, the backrest drivers 10a, 10b can be high-speed motors, such as brushless motors. Here, the backrest drivers 10a, 10b can be used not only to achieve high-speed reset movement of the backrest 2, but also to achieve angle adjustment of the backrest 2 at a relatively slow speed under normal use of the seat 1. Such backrest drivers 10a, 10b can also be called dual-speed adjusters. In other exemplary embodiments, the seat 1 may include additional (manual and / or electric) drive devices for adjusting the angle of the backrest 2 in normal use of the seat 1 .

[0134] Alternatively or additionally, such as Fig. 20As shown, a cushion reset mechanism 13 can be connected to the cushion adjustment synchronization rod 80, and the cushion reset mechanism 13 can drive the cushion adjustment synchronization rod 80 to rotate to change the cushion rotation angle φ. The cushion reset mechanism 13 can include at least one, exactly one, cushion driver 70 and, if necessary, a corresponding transmission mechanism, such as a reducer. In order to achieve rapid reset of the seat 1, the cushion driver 70 and the corresponding transmission mechanism can be selected in a targeted manner so that a cushion reset angular velocity of at least 10° / s, preferably at least 20° / s, can be achieved. For this purpose, the cushion driver 70 can be a high-speed motor, such as a brushless motor. Here, the cushion driver 70 can be used not only to achieve high-speed reset movement of the cushion 3, but also to achieve angle adjustment of the cushion 3 at a relatively slow speed under normal use of the seat 1. Such a cushion driver 70 can also be called a dual-speed adjuster. In other embodiments, the seat 1 can include another (manual and / or electric) drive device for adjusting the angle of the cushion 3 under normal use of the seat 1.

[0135] Fig. 20 Also shown is a seat control module 211 and a wiring harness 30 for connecting the seat control module 211 and corresponding backrest actuators 10a, 10b and / or seat cushion actuator 70. Control instructions from the seat control module 211 can be sent to corresponding actuators via the wiring harness 30.

[0136] In addition, an embodiment of the present application relates to a vehicle capable of implementing the above-described method 100 for pre-crash resetting of a seat 1 of a vehicle, and / or the above-described control system 200 of the vehicle, and / or the vehicle including the above-described seat 1.

[0137] The above describes exemplary embodiments according to the present application with reference to the accompanying drawings. However, it should be understood by those skilled in the art that various changes and modifications can be made to the exemplary embodiments of the present application without departing from the spirit and scope of the present application. All changes and modifications are included in the scope of protection of the present application as defined by the claims. The present application is defined by the appended claims, and the equivalents of these claims are also included.

Claims

1. A method for pre-crash resetting of a vehicle seat, characterized in that: At least one of a seat cushion rotation angle and a backrest rotation angle of the seat can be changed by means of a reset mechanism, and the method comprises: Step S1: obtaining a pre-collision signal; Step S2: In response to the pre-collision signal, determining the minimum movement amount of the reset mechanism required to reset the seat to the safe posture area according to the current posture of the seat, wherein the current posture of the seat includes a seat cushion rotation angle and a backrest rotation angle; Step S3: According to the determined minimum movement amount, controlling the reset mechanism to reset the seat to a safe target posture, wherein the safe target posture is located in a safe posture area of ​​the seat or on a boundary of the safe posture area of ​​the seat; Preferably: The current posture of the seat further includes at least one of the fore-and-aft positioning of the seat, the up-and-down positioning of the leg rest, the fore-and-aft positioning of the leg rest, and the rotation angle of the leg rest; and / or The safe posture range that the seat can reach with the aid of the reset mechanism is related to the current posture of the seat; and / or The safe posture area of ​​the seat is determined by experiments and / or simulations and / or theoretical deductions and / or machine learning.

2. The method according to claim 1, characterized in that The reset mechanism is a backrest reset mechanism for changing the backrest rotation angle of the seat, wherein in step S2, the minimum movement amount of the backrest reset mechanism required to reset the seat to a safe posture area is determined, and in step S3, the backrest reset mechanism is controlled to reset the seat to a safe target posture; or The reset mechanism is a seat cushion reset mechanism for changing the seat cushion rotation angle of the seat, wherein the minimum movement amount of the seat cushion reset mechanism required to reset the seat to a safe posture area is determined in step S2, and the seat cushion reset mechanism is controlled to reset the seat to a safe target posture in step S3; or The reset mechanism includes a backrest reset mechanism for changing the rotation angle of the seat back and a cushion reset mechanism for changing the rotation angle of the seat cushion, wherein in step S2, the minimum movement amount required by the backrest reset mechanism and the seat cushion reset mechanism in order to reset the seat to a safe posture area is determined, and in step S3, the backrest reset mechanism and / or the seat cushion reset mechanism are controlled to reset the seat to a safe target posture.

3. The method according to claim 1 or 2, characterized in that In step S2, the minimum movement amount is determined so that the time required to return the seat from the current posture to the safe target posture is the shortest; and / or In step S2, the minimum movement amount is determined such that the larger one of the movement amount of the backrest reset mechanism and the movement amount of the seat cushion reset mechanism is minimized; and / or The minimum movement amount is determined according to at least one of the power, transmission ratio, driving force, and response time of the backrest reset mechanism and the seat cushion reset mechanism.

4. The method according to any one of claims 1 to 3, characterized in that The method comprises, before step S1: - determining whether there is an occupant on the seat and whether the seat is in a safe posture area, and obtaining a determination result; - if the judgment result is that there is an occupant on the seat and the seat is not in a safe posture area, finding out whether the vehicle has a collision risk; - Provide a pre-crash signal when it is determined that the vehicle is at risk of collision and a pre-crash repositioning of the seat is required; Preferably, whether the vehicle has a collision risk and whether a pre-collision reset of the seat is required is ascertained according to the time to collision TTC.

5. A control system for pre-crash resetting of a vehicle seat, characterized in that: The control system comprises: at least one control unit; and at least one memory unit coupled to the control unit, the memory unit being configured to store a series of computer executable instructions, wherein the series of computer executable instructions, when executed by a control unit, causes the control unit to perform the method according to any one of claims 1 to 4; Preferably, the at least one control unit comprises a seat control module and / or an electronic control unit of the vehicle.

6. A seat for a vehicle, characterized in that: The method according to any one of claims 1 to 4 can be applied to the seat, wherein the seat comprises a reset mechanism, by means of which at least one of a seat cushion rotation angle and a backrest rotation angle of the seat can be changed; preferably: The seat forward and backward positioning of the seat is adjustable; and / or the seat includes a leg rest, and at least one of the leg rest's upward and downward positioning, the leg rest's forward and backward positioning, and the leg rest's rotation angle is adjustable; and / or The resetting mechanism includes a backrest resetting mechanism for changing a rotation angle of a seat back and / or a seat cushion resetting mechanism for changing a rotation angle of a seat cushion.

7. The seat according to claim 6, characterized in that The seat comprises two seat cushion adjusters for adjusting the rotation angle of the seat cushion, the two seat cushion adjusters are connected to each other via a seat cushion adjustment synchronization rod, the seat cushion reset mechanism is in transmission connection with the seat cushion adjustment synchronization rod, and the seat cushion rotation angle of the seat can be changed by means of the seat cushion reset mechanism, preferably, the seat cushion reset mechanism comprises at least one, preferably two seat cushion drivers, and the seat cushion reset mechanism is configured to achieve a seat cushion reset angular velocity of at least 10° / s, preferably at least 20° / s; and / or The seat includes two backrest adjusters for adjusting the rotation angle of the backrest, the two backrest adjusters are interconnected by a backrest adjustment synchronization rod, the backrest reset mechanism is transmission-connected to the backrest adjustment synchronization rod, and the backrest rotation angle of the seat can be changed with the aid of the backrest reset mechanism. Preferably, the backrest reset mechanism includes at least one, preferably two backrest drives, and the backrest reset mechanism is constructed so as to achieve a backrest reset angular velocity of at least 10° / s, preferably at least 20° / s.

8. The seat according to claim 6 or 7, characterized in that: The seat includes a seat control module connected to the reset mechanism signal, and the seat control module is configured to: - Get pre-collision signal; - in response to the pre-crash signal, determining the minimum movement amount of the reset mechanism required to reset the seat to the safe posture area according to the current posture of the seat, wherein the current posture of the seat includes the rotation angle of the seat cushion and the rotation angle of the backrest; and - according to the determined minimum movement amount, controlling the resetting mechanism to reset the seat to a safe target posture; Preferably, The seat control module is further configured to: - determining whether there is an occupant on the seat and whether the seat is in a safe posture area, and obtaining a determination result; and - providing the determination result to an electronic control unit of the vehicle, or providing the determination result to an electronic control unit of the vehicle only when the determination result is that there is an occupant on the seat and the seat is not in a safe posture area.

9. A vehicle, characterized in that: The vehicle is capable of implementing a method according to any one of claims 1 to 4 and / or the vehicle comprises a control system according to claim 5 and / or the vehicle comprises a seat according to any one of claims 6 to 8.

10. The vehicle according to claim 9, characterized in that The vehicle includes an electronic control unit, the electronic control unit being communicatively connected to a seat control module, the electronic control unit being configured to: - Find out if the vehicle poses a collision risk; - providing a pre-crash signal to the seat control module when it is determined that the vehicle is at risk of collision and a pre-crash reset of the seat is required; Preferably, the vehicle comprises an SBR system and / or a pressure sensor for determining whether there is an occupant in the seat.

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