Passive safety protection method and system based on positions of persons in vehicle

Abstract

The invention provides a passive safety protection method and system based on the position of a person in a vehicle. The passive safety protection method based on the position of the person in the vehicle comprises the steps that S1, position information is acquired; s2, acquiring an acceleration signal; s3, judging a collision type; and S4, providing a protection strategy. Wherein in the step S3, the collision types are judged, the acceleration signals are decomposed, and different collision types are judged in combination with the position information. The collision type comprises a front collision scene, a side collision scene and a rear collision scene. In the step S4, if the triggering condition of the collision type is met, different protection strategies are provided. The invention further provides a passive safety protection system based on the positions of the persons in the vehicle. Information is obtained through existing equipment in the vehicle, multi-dimensional collision signal analysis is conducted, the collision signals are divided into different collision types, corresponding protection strategies are provided, and the limitation that a traditional protection scheme only adapts to a fixed sitting posture or a single rotation angle is broken through.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and particularly to a system and method for automatically matching and routing multiple payment methods. Background Art

[0002] With the rapid development of automotive intelligence and handling performance, the occupants' demands for seat comfort and personalization are increasing day by day, and rotatable seats are gradually becoming an industry trend. However, in dynamic collision scenarios, such seats may significantly reduce the matching degree between the occupant's sitting posture and traditional passive safety systems. For example, the occupant may be in unconventional postures such as lateral, oblique, or even facing away from the driving direction. Traditional collision protection strategies based on fixed sitting postures are difficult to effectively constrain the movement trajectory of the occupant's body, presenting safety risks. Therefore, how to design a dynamically adaptable passive safety protection solution for the complex posture characteristics of rotatable seats has become an urgent technical problem to be solved.

[0003] Currently, the solutions in the public domain mainly focus on the protection optimization of static large-angle backrest seats. However, in dynamic rotation scenarios, the relative positions of the occupants and the vehicle interior structures and the directions of collision loads are highly uncertain. Traditional airbag triggering logics and seatbelt pre-tensioning strategies may fail due to posture mismatches, resulting in a significant decline in the protection effect.

[0004] To address the above deficiencies, existing technologies have attempted to improve the rigidity of seats through mechanical structure optimization, such as strengthening the backrest skeleton, adding movable baffles or buffer mechanisms, etc. Although such designs can alleviate local impacts to a certain extent, they do not solve the core problems of rotatable seats in collision signal recognition, dynamic response of safety devices, and multi-posture adaptability from a system level. In addition, mechanical reinforcement may increase the weight and cost of the seats and limit their adjustment flexibility, making it difficult to meet the lightweight and multi-functional requirements of intelligent cockpits. Summary of the Invention

[0005] The present invention proposes a passive safety protection method and system based on the position of the vehicle occupants. By obtaining information through existing in-vehicle devices, multi-dimensional collision signals are analyzed, classified into different collision types, and corresponding protection strategies are provided, breaking through the limitations of traditional protection solutions that only adapt to fixed sitting postures or single rotation angles.

[0006] To achieve the above object, the present invention provides a passive safety protection method based on the position of the vehicle occupants, including:

[0007] S1. Obtain position information, identify the position of the person and the surrounding space environment, and obtain the position information;

[0008] S2. Obtain acceleration signals. When a collision occurs, obtain the acceleration signals generated by the collision;

[0009] S3, determining the collision type, decomposing the acceleration signal, and determining different collision types in combination with the position information;

[0010] S4. Provide protection strategies. If the triggering conditions of the collision type are met, provide different protection strategies.

[0011] In one embodiment, the position information includes the position information of the occupants in the vehicle, the rotation angle of the seat turntable, and the forward and backward movement distance of the seat;

[0012] The position information of the person in the vehicle includes orientation information of the person in the vehicle, posture information of the person in the vehicle, body shape information of the person in the vehicle, and weight information of the person in the vehicle.

[0013] In one embodiment, in step S3, the acceleration signal is decomposed into acceleration signals in three directions, namely, X, Y, and Z, in combination with the orientation information of the occupant in the vehicle, to determine different collision types;

[0014] The collision types include head-on collision scenarios, side collision scenarios and rear collision scenarios.

[0015] In one embodiment, in step S4, if the triggering condition of the collision type is met, different protection strategies are provided, and the protection strategies include:

[0016] S41: When it is determined to be a head-on collision, the front airbag of the seat is detonated, the backrest returns to its original position and the seat belt is tightened;

[0017] S42: when it is determined that the collision is not a head-on collision but a side collision, the seat surround airbag is deployed and the seat belt is tightened;

[0018] S43: When it is determined that the scene is not a side collision but a rear collision scene, move the active headrest forward and tighten the seat belt.

[0019] In one embodiment, in step S4,

[0020] If the posture information of the occupant is a lying posture, the seat back returns to its original position;

[0021] If the posture information of the occupant is a forward leaning posture, adjust the active head restraint.

[0022] The present invention provides a passive safety protection system based on the position of people in a vehicle, comprising:

[0023] An acquisition module, wherein the acquisition module acquires location information;

[0024] A control module, when a collision occurs, the control module obtains an acceleration signal generated by the collision, decomposes the acceleration signal, and determines different collision types in combination with position information;

[0025] A trigger module provides different protection strategies if the trigger condition of the collision type is met.

[0026] In one embodiment, the acquisition module includes one or more of sensors, cameras or radars, and the position information acquired by the acquisition module includes position information of people in the vehicle, rotation angle of the seat turntable, and forward and backward movement distance of the seat.

[0027] In one embodiment, the control module includes a controller, which obtains an acceleration signal generated by a collision, decomposes the acceleration signal, and determines different collision types in combination with position information.

[0028] In one embodiment, the control module determines different collision types in combination with the position information, and the collision types include a head-on collision scenario, a side collision scenario, and a rear collision scenario.

[0029] In one embodiment, the trigger module provides different protection strategies according to the trigger conditions.

[0030] When the control module determines that it is a head-on collision scenario, the trigger module will detonate the front seat airbag, return the backrest to its original position and tighten the seat belt;

[0031] When the control module determines that it is not a head-on collision scenario but a side collision scenario, the trigger module will detonate the seat surround airbag and tighten the seat belt;

[0032] When the control module determines that it is not a side collision scenario but a rear collision scenario, the trigger module moves the active headrest forward and tightens the seat belt.

[0033] The present invention has the following beneficial effects:

[0034] The present invention proposes a passive safety protection method and system based on the position of people in the car. It obtains information through existing equipment in the car, performs multi-dimensional collision signal analysis, divides them into different collision types, and provides corresponding protection strategies. The present invention uses the existing Hall sensors in the car for position detection and the seat turntable for angle feedback. While ensuring data accuracy, there is no need to modify the seat body structure or add an independent control module, which is convenient for rapid adaptation to different vehicle platforms. At the same time, it supports continuous optimization of protection logic through software iteration to expand future functional upgrade space. The present invention collects and decomposes the multi-axis components (such as longitudinal, lateral, and vertical) of the acceleration signal in real time, combines the position information, identifies and divides them into different collision types, and avoids the protection strategy mismatch problem caused by the single signal dimension of the traditional solution. The present invention can dynamically generate customized safety strategies for different collision types in combination with the actual orientation and posture of the people in the car, breaking through the limitations of traditional protection solutions that only adapt to fixed sitting postures or single rotation angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Flow chart of a passive safety protection method based on the position of vehicle occupants according to an embodiment of the present invention;

[0036] Figure 2 Structural diagram of a passive safety protection system based on the position of vehicle occupants according to an embodiment of the present invention.

[0037] Reference numerals

[0038] 1. Acquisition module; 2. Control module; 3. Trigger module; 4. Active headrest; 5. Front airbag; 6. Encircling airbag; 7. Backrest. Detailed implementation manners

[0039] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the invention and are not used to limit the invention.

[0040] A passive safety protection method based on the position of vehicle occupants includes: S1. Acquire position information, identify the position of the occupants and the surrounding space environment, and acquire position information. S2. Acquire acceleration signals. When a collision occurs, acquire the acceleration signals generated by the collision. S3. Determine the collision type, decompose the acceleration signals, and combine the position information to determine different collision types. S4. Provide protection strategies. If the trigger conditions for the collision type are met, provide different protection strategies.

[0041] In this embodiment, the position information includes the position information of vehicle occupants, the rotation angle of the seat turntable, and the front-back movement distance of the seat. The position information of vehicle occupants includes the orientation information of vehicle occupants, the posture information of vehicle occupants, the body shape information of vehicle occupants, and the weight information of vehicle occupants. Preferably, in this embodiment, the orientation information of vehicle occupants includes the face orientation of vehicle occupants. The posture information of vehicle occupants includes the body shape of vehicle occupants, such as the body of vehicle occupants leaning forward or lying semi-reclined. The body shape information of vehicle occupants includes the body shape data of vehicle occupants, such as height, body type, etc. The rotation angle of the seat turntable includes the angle of torsion rotation of the seat turntable. The front-back movement distance of the seat includes the distance of the seat moving forward and backward on the slide rail.

[0042] In one embodiment, in step S3, the acceleration signal is decomposed, and the acceleration signal is decomposed into acceleration signals in three directions of X, Y, and Z in combination with the orientation information of the occupants in the vehicle, and different collision types are determined. The collision types include head-on collision scenes, side collision scenes, and rear collision scenes. In this embodiment, preferably, when a collision occurs, after the control module 2 obtains the acceleration signal generated by the collision, it will finely decompose the acceleration signal in combination with the orientation information of the occupants in the vehicle. Specifically, the acceleration signal is decomposed into acceleration signals in three directions of X, Y, and Z, and different collision types are accurately determined based on this. Assume that the direction of vehicle travel is the positive direction of the X-axis, the left side of the vehicle is the positive direction of the Y-axis, the right side of the vehicle is the negative direction of the Y-axis, and the top of the vehicle is the positive direction of the Z-axis. For head-on collision scenes, usually a large acceleration change will occur in the direction of vehicle travel, that is, the X-axis direction. Combined with the orientation information of the occupants in the vehicle, if it is detected that the occupants in the vehicle are facing straight ahead, and the acceleration signal in the X direction exceeds the set forward collision threshold, and the acceleration signals in the Y and Z directions are relatively small, the control module 2 determines it as a head-on collision scene. For side collision scenes, there will generally be obvious acceleration changes in the Y direction. If the control module 2 detects that the direction of the occupant is related to the side collision direction, and the acceleration signal in the Y direction exceeds the set side collision threshold, while the acceleration signals in the X and Z directions are relatively small, it is determined to be a side collision scene. For the rear collision scene, there will be a significant acceleration change in the opposite direction of the vehicle's travel direction, that is, the negative direction of the X axis. If the occupant faces forward, and the acceleration signal in the X direction exceeds the set rear collision threshold in the negative direction, while the acceleration signals in the Y and Z directions are relatively small, it is determined to be a rear collision scene.

[0043] In one embodiment, in step S4, if the triggering conditions of the collision type are met, different protection strategies are provided, including: S41, when it is determined to be a head-on collision scene, the front seat protection airbag 5 is detonated, the backrest 7 returns to its original position and the seat belt is tightened. S42, when it is determined not to be a head-on collision scene but a side collision scene, the seat surround airbag 6 is detonated and the seat belt is tightened. S43, when it is determined not to be a side collision scene but a rear collision scene, the active headrest 4 is moved forward and the seat belt is tightened.

[0044] In one embodiment, in step S4, if the in-vehicle occupant's posture information is a lying posture, the seat backrest 7 returns to its original position. If the in-vehicle occupant's posture information is a forward-leaning posture, the active headrest 4 is adjusted. This embodiment preferably combines the in-vehicle occupant's posture information with the protection strategy implemented according to the collision type to further optimize the protection measures. When the vehicle collides, if the in-vehicle occupant's posture information is a lying posture, the stability of the person's body during the collision is poor, so the seat backrest 7 will automatically return to a suitable angle. When the vehicle collides, if the in-vehicle occupant's posture information is a forward-leaning posture, since the head and neck are more vulnerable to injury during this posture in a collision, the system will adjust the active headrest 4. The active headrest 4 will be adjusted to a position that can more effectively support the head according to the degree of forward lean and the collision type, reducing the amplitude of the head's forward movement, thereby protecting the neck from excessive stretching and twisting.

[0045] A passive safety protection system based on the position of in-vehicle occupants includes an acquisition module 1, a control module 2, and a trigger module 3. The acquisition module 1 acquires position information. The control module 2, when a collision occurs, acquires the acceleration signal generated by the collision, decomposes the acceleration signal, and combines the position information to determine different collision types. The trigger module 3 provides different protection strategies when the trigger conditions for the collision type are met.

[0046] In one embodiment, the acquisition module 1 includes one or more of sensors, cameras, or radars. The position information acquired by the acquisition module 1 includes in-vehicle occupant position information, the rotation angle of the seat turntable, and the forward and backward movement distance of the seat. This embodiment preferably uses the existing Hall sensors on the seat to acquire position information without adding additional sensors. In one embodiment, the seat is designed to be rotatable, and the rotation angle can be identified by the change in the turntable angle, and the rotation angle of the seat turntable can be measured without adding additional sensors. This embodiment preferably uses cameras or radars to acquire position information. The system can capture the facial orientation of in-vehicle occupants through multiple high-precision cameras installed in the vehicle and combined with image recognition algorithms. The forward and backward movement of the seat is driven by an electric slide rail, and a displacement sensor is installed on the slide rail to accurately measure the forward and backward movement distance of the seat.

[0047] In one embodiment, the control module 2 includes a controller. The controller acquires the acceleration signal generated by the collision, decomposes the acceleration signal, and combines the position information to classify different collision types. This embodiment preferably uses an airbag controller as the controller.

[0048] In one embodiment, the control module 2 combines the position information to determine different collision types, including frontal collision scenarios, side collision scenarios, and rear collision scenarios.

[0049] In one embodiment, the triggering module 3 provides different protection strategies according to the triggering conditions. When the control module 2 determines that it is a frontal collision scenario, the triggering module 3 detonates the front airbag 5 of the seat, the backrest 7 returns to its original position and the seat belt is tightened. When the control module 2 determines that it is not a frontal collision scenario but a side collision scenario, the triggering module 3 detonates the seat surround airbag 6 and tightens the seat belt. When the control module 2 determines that it is not a side collision scenario but a rear collision scenario, the triggering module 3 moves the active headrest 4 forward and tightens the seat belt.

[0050] The present invention has the following beneficial effects:

[0051] The present invention provides a passive safety protection method and system based on the position of vehicle occupants. Information is obtained through existing in-vehicle devices, multi-dimensional collision signals are analyzed, classified into different collision types, and corresponding protection strategies are provided. The present invention uses existing Hall sensors in the vehicle for position detection and seat turntables for angle feedback. While ensuring data accuracy, it is not necessary to modify the seat body structure or add an independent control module, facilitating rapid adaptation to different vehicle platforms. At the same time, it supports continuous optimization of the protection logic through software iteration and expands the space for future function upgrades. The present invention collects and decomposes the multi-axis components (such as longitudinal, lateral, and vertical) of the acceleration signal in real time, combines the position information, identifies and classifies different collision types, and avoids the problem of mis-matching protection strategies caused by a single signal dimension in traditional solutions. For different collision types, the present invention can dynamically generate customized safety strategies in combination with the actual orientation and posture of vehicle occupants, breaking through the limitations of traditional protection solutions that only adapt to fixed sitting postures or single rotation angles.

[0052] It should be noted that unless otherwise clearly specified and limited, the similar terms such as "installation", "connection", and "coupling" used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can also be the communication inside two components. Those skilled in the art can understand their specific meanings in this application according to specific situations.

[0053] The above-described embodiments are only further descriptions of the present invention and do not limit the present invention in other forms. The present invention can also have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding modifications and changes according to the present invention, but these corresponding modifications and changes should all fall within the protection scope of the present invention.

Claims

1. A passive safety protection method based on the position of vehicle occupants, characterized in that, Including: S1. Obtain location information, identify the location of the person and the surrounding space environment, and obtain location information; S2. Obtain acceleration signals. When a collision occurs, obtain the acceleration signals generated by the collision; S3. Determine the collision type. Decompose the acceleration signals, and combine the location information to determine different collision types; S4. Provide protection strategies. If the trigger conditions for the collision type are met, provide different protection strategies.

2. The passive safety protection method based on the position of the vehicle occupants according to claim 1, characterized in that the location information includes the location information of the vehicle occupants, the rotation angle of the seat turntable, and the forward and backward movement distance of the seat; the location information of the vehicle occupants includes the orientation information of the vehicle occupants, the posture information of the vehicle occupants, the body posture information of the vehicle occupants, and the weight information of the vehicle occupants.

3. The passive safety protection method based on the position of vehicle occupants according to claim 1, characterized in that, In S3, decompose the acceleration signals, and combine the orientation information of the vehicle occupants to decompose the acceleration signals into acceleration signals in three directions of X, Y, and Z, and determine different collision types; the collision types include the frontal collision scenario, the side collision scenario, and the rear collision scenario.

4. The passive safety protection method based on the position of vehicle occupants according to claim 1, wherein, In S4, if the trigger conditions for the collision type are met, provide different protection strategies. The protection strategies include: S41. When it is determined as the frontal collision scenario, deploy the front seat airbag, return the backrest to its original position and tighten the seat belt; S42. When it is determined not to be the frontal collision scenario but the side collision scenario, deploy the seat wrap-around airbag and tighten the seat belt; S43. When it is determined not to be the side collision scenario but the rear collision scenario, move the active headrest forward and tighten the seat belt.

5. The passive safety protection method based on the position of vehicle occupants according to claim 1, wherein, In S4, if the posture information of the vehicle occupants is a lying posture, the seat backrest returns to its original position; if the posture information of the vehicle occupants is a forward-leaning posture, adjust the active headrest.

6. A passive safety protection system based on the position of vehicle occupants, characterized in that, Including an acquisition module, which acquires location information; a control module, when a collision occurs, the control module acquires the acceleration signals generated by the collision, decomposes the acceleration signals, and combines the location information to determine different collision types; a trigger module, if the trigger conditions for the collision type are met, the trigger module provides different protection strategies.

7. The passive safety protection system based on the position of vehicle occupants according to claim 6, wherein The acquisition module includes one or more of sensors, cameras, or radars. The location information acquired by the acquisition module includes the location information of the vehicle occupants, the rotation angle of the seat turntable, and the forward and backward movement distance of the seat.

8. The passive safety protection system based on the position of vehicle occupants according to claim 6, wherein The control module includes a controller, and the controller acquires the acceleration signals generated by the collision, decomposes the acceleration signals, and combines the location information to determine different collision types.

9. The passive safety protection system based on the position of vehicle occupants according to claim 6, characterized in that, The control module combines the location information to determine different collision types. The collision types include the frontal collision scenario, the side collision scenario, and the rear collision scenario.

10. The passive safety protection system based on the position of vehicle occupants according to claim 6, characterized in that, The trigger module provides different protection strategies according to the trigger conditions. When the control module determines it as the frontal collision scenario, the trigger module deploys the front seat airbag, returns the backrest to its original position and tightens the seat belt; When the control module determines it is not the frontal collision scenario but the side collision scenario, the trigger module deploys the seat wrap-around airbag and tightens the seat belt; When the control module determines it is not the side collision scenario but the rear collision scenario, the trigger module moves the active headrest forward and tightens the seat belt.

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