CN115027400A

CN115027400A - Safety device control method and device

Info

Publication number: CN115027400A
Application number: CN202210609954.7A
Authority: CN
Inventors: 张绍卫
Original assignee: Hozon New Energy Automobile Co Ltd
Current assignee: Hozon New Energy Automobile Co Ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-09-09
Anticipated expiration: 2042-05-31
Also published as: WO2023231372A1; CN115027400B

Abstract

The embodiment of the application provides a safety device control method and a safety device control device. The safety device control method comprises the following steps: acquiring state information of a target seat; wherein the state information includes: a longitudinal travel of the target seat, a tilt angle of a basin of the target seat, and a tilt angle of a backrest of the target seat; and controlling the safety device corresponding to the target seat to execute an operating strategy matched with the state information when the vehicle is detected to be collided and the collision intensity is greater than or equal to an intensity threshold value. The technical scheme provided by the embodiment of the application can solve the problem that when collision occurs in the prior art, the traditional passive safety system on the vehicle can not effectively protect passengers on seats in different states.

Description

Safety device control method and device

Technical Field

The application belongs to the technical field of vehicle safety, and particularly relates to a safety device control method and device.

Background

As vehicle technology has developed, seats in vehicles come in various seating modes, such as a meeting mode, a talking mode, a guest-meeting mode, a resting mode, etc., but in these seating modes, occupants may face safety issues. For example, as shown in fig. 1, when an occupant sits down on a seat in a resting mode, the occupant is far away from a conventional airbag at the time of collision, and thus cannot be protected by the airbag. In addition, in the sitting posture, the seat pan of the seat is in a raised state, and the lumbar vertebrae of the passenger can be extruded by the inertia of the trunk during collision, so that the lumbar vertebrae is injured. In summary, conventional passive safety systems may not be able to effectively protect occupants of a seat in different conditions when a collision occurs.

Disclosure of Invention

An object of the embodiments of the present application is to provide a method and a device for controlling a safety device, so as to solve the problem that, in the prior art, when a collision occurs, a conventional passive safety system on a vehicle may not be able to effectively protect occupants in seats in different states.

In a first aspect, an embodiment of the present application provides a safety device control method, which is applied to a vehicle, where the safety device includes: an airbag and a first cushioning device; the airbag includes at least two pop-up states, and the extension length of the airbag in the longitudinal direction of the vehicle in each pop-up state is different; the first buffer device is arranged between the seat and the vehicle floor and used for buffering the movement of the seat along the vehicle floor direction in the vertical direction of the vehicle;

the safety device control method comprises the following steps:

acquiring state information of a target seat; wherein the state information includes: a longitudinal travel of the target seat, a tilt angle of a basin of the target seat, and a tilt angle of a backrest of the target seat;

and under the condition that the vehicle is detected to be collided and the collision strength is greater than or equal to the strength threshold value, controlling the safety device corresponding to the target seat to execute an operating strategy matched with the state information.

In a second aspect, an embodiment of the present application provides a safety device control apparatus, including:

the safety device includes: an airbag and a first cushion device; the airbag includes at least two pop-up states, and the extension length of the airbag in the longitudinal direction of the vehicle in each pop-up state is different; the first buffer device is arranged between the seat and the vehicle floor and used for buffering the movement of the seat along the vehicle floor direction in the vertical direction of the vehicle;

wherein the safety device control device includes:

the acquisition module is used for acquiring the state information of the target seat; wherein the status information includes: a longitudinal travel of the target seat, a tilt angle of a basin of the target seat, and a tilt angle of a backrest of the target seat;

and the control module is used for controlling the safety device corresponding to the target seat to execute an operating strategy matched with the state information under the condition that the vehicle is detected to be collided and the collision intensity is greater than or equal to an intensity threshold value.

In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor and a memory, where the memory stores a program or instructions executable on the processor, and the program or instructions, when executed by the processor, implement the steps in the safety device control method according to the first aspect.

In a fourth aspect, the present invention provides a readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps in the safety device control method according to the first aspect.

In the embodiment of the application, when a vehicle is in collision, if the collision strength reaches the strength threshold value, a corresponding safety device is triggered to effectively protect a passenger on a seat according to the state of a target seat. For example, the longitudinal stroke and the backrest inclination angle of the seat affect the distance between the occupant and the airbag, and the pop-up state of the airbag can be determined according to the longitudinal stroke and the backrest inclination angle of the seat, so as to effectively protect the occupant. For another example, the inclination angle of the seat basin affects the lumbar vertebra safety of the passenger, so that when the inclination angle of the seat basin is large, the seat basin can be controlled to return to the position at a safe speed through the first buffer device, the inclination angle is reduced, the vertical acting force of the seat basin is buffered, and the injury of the seat basin to the lumbar vertebra of the passenger is reduced. In a word, the technical scheme provided by the embodiment of the application can adopt different safety protection measures according to different states of the seat, so that passengers in a collision accident can be effectively and comprehensively protected.

Drawings

FIG. 1 is a schematic representation of a prior art vehicle seat position and occupant seating posture;

fig. 2 is a schematic configuration diagram of a safety system of a vehicle according to an embodiment of the present application;

fig. 3 is a schematic view of a positional relationship between a first cushioning device and a second cushioning device provided in an embodiment of the present application and a seat;

fig. 4 is a schematic flowchart of a safety device control method according to an embodiment of the present application;

FIG. 5 is a schematic structural view of an airbag provided in an embodiment of the present application;

FIG. 6 is a schematic diagram illustrating control logic of a safety device according to an embodiment of the present disclosure;

fig. 7 is a schematic block diagram of a safety device control device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, and it is obvious that the embodiments described below are some, but not all, embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present application, it should be understood that the sequence numbers of the steps do not mean an absolute sequential execution order, and the execution order of the steps should be determined by the function and the inherent logic, so the sequence numbers of the steps should not be an absolute limitation to the implementation process of the embodiments of the present application.

The following describes the safety device control method provided by the embodiment of the present application in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.

The embodiment of the application provides a safety device control method, which is applied to a vehicle, wherein the vehicle comprises a passive safety system. As shown in fig. 2, the passive safety system may include: a system controller 201, and a seat 202, a safety device 203, a driving assistance system 204, and various sensors 205 that are electrically connected to the system controller 201, respectively.

Among them, the security device 203 may include: an airbag 2031 and a first cushioning device 2032.

The airbag 2031 in the embodiment of the present application has a variable contour feature, which includes at least two pop-up states, and the longitudinal extension length (the longitudinal direction of the vehicle, i.e., the front-rear direction of the vehicle) of the airbag 2031 in each pop-up state is different, so as to meet the use requirements of the airbag for passengers at different distances. For example, when the distance between the occupant in the seat 202 and the front airbag 2031 (in the unexpelled state) is short, the airbag 2031 may be controlled to be ejected in a state of a small longitudinal extension length after the collision occurs, so that the occupant can be protected while the impact injury to the occupant due to the large longitudinal extension length of the airbag can be avoided; when the distance between the occupant in the seat 202 and the front airbag 2031 (in the unexpelled state) is long, the airbag 2031 may be controlled to be ejected in a state of a long longitudinal extension length after the collision occurs, so that the airbag 2031 is more in contact with the occupant, and a good protection effect is achieved. Among other things, the system controller 201 may send a control signal to the airbag 2031 to control the pop-up state of the airbag 2031.

As shown in fig. 3, the first buffer 2032 is disposed between the seat 202 and the floor 300 of the vehicle for buffering the movement of the seat 202 in the floor direction in the vehicle vertical direction, and therefore, the first buffer 2032 may also be referred to as a vertical energy management device. The first cushion 2032 can be released along the vertical stroke of the seat 202 under the control of the system controller 101, and when released, the seat 202 and the passenger seated on the seat 202 move downward (i.e., in the vehicle floor direction) under the control of the system controller 101. During movement of the seat 202, the first cushioning device 2032 absorbs vertical energy from the impact.

Alternatively, the first buffer 2032 may be a pneumatic or hydraulic device, or may be a device that performs energy buffering based on a frictional force between mechanisms, or may be a device that performs energy buffering based on a collapse, bending deformation, or the like of a structural member.

In any of the above embodiments, the first buffer 2032 has at least the following two features:

one feature is that it can be triggered, for example, by a safety mechanism such as a shear pin. When the first cushioning device 2032 is not triggered, the state of the seat 2021 is stable and non-crushable; the seat bowl 2021 may be restrained from vertical movement after the first dampener 2032 is activated.

Secondly, the seat basin 2021 has the characteristic of applying resistance in the direction opposite to the moving direction.

As shown in fig. 2, the various sensors 205 may include: a crash sensor 2051, a seat stroke position sensor 2052, a bowl tilt angle sensor 2053, and a back tilt angle sensor 2054.

The collision sensor 2051 may sense a collision and detect collision strength, and then transmit collision information and collision strength information to the system controller 201.

As shown in fig. 3, a seat stroke position sensor 2052 may be provided on the interface of the seat 202 with the vehicle floor 300 to detect the position of the seat 202 in longitudinal stroke. For example, if the overall longitudinal travel range of the seat 202 is 0-500mm, and the travel closest to the vehicle head is set to the minimum (i.e., 0mm) and the longitudinal travel furthest from the vehicle head is set to the maximum (i.e., 500mm), the seat travel position sensor 2052 can detect a specific travel position of the seat 202, such as a longitudinal travel position at 200mm, 300mm, 500mm, etc. It should be noted that, the longitudinal stroke described in the embodiments of the present application refers to: and setting the stroke closest to the vehicle head as the minimum stroke, and setting the stroke farthest from the vehicle head as the maximum stroke.

As shown in fig. 3, a seat pan tilt angle sensor 2053 may be disposed on the rotating shaft 2023 of the seat pan 2021 for detecting the tilt angle of the seat pan 2021.

As shown in fig. 3, a backrest inclination angle sensor 2054 may be disposed on the rotating shaft 2024 of the backrest 2022 for detecting the inclination angle of the backrest 2022.

It is understood that when the bowl rotation shaft 2023 and the seat rotation shaft 2024 are the same rotation shaft, the bowl inclination angle sensor 2053 and the back rest inclination angle sensor 2054 may be provided at the same position. The tilt angles of the seat pan 2021 and the backrest 2022 may be adjusted synchronously or separately, and therefore, the seat pan tilt angle sensor 2053 and the backrest tilt angle sensor 2054 may be the same sensor (for example, in the case where the tilt angles of the seat pan 2021 and the backrest 2022 are adjusted synchronously) or different sensors (for example, in the case where the tilt angles of the seat pan 2021 and the backrest 2022 are adjusted separately).

The driving assistance system 204 may pre-determine the possibility of collision according to an obstacle in front of the vehicle, and may send a pre-collision signal to the system controller 201 if it is determined that the collision probability is greater than or equal to a probability threshold.

The system controller 201 can be in communication with the safety device 203, the driving assistance system 204, and various sensors 205 at the same time, and can determine whether the system functions normally through self-checking, for example, whether a loop in the passive safety system is open through micro-current detection, and whether electrical performance of each device in the passive safety system is normal.

As shown in fig. 4, the safety device control method may include:

step 401: status information of the target seat is acquired.

The target seat may be any seat in the vehicle equipped with the safety device.

Wherein the state information of the target seat may include: a longitudinal travel of the target seat, a tilt angle of a basin of the target seat, and a tilt angle of a backrest of the target seat. The longitudinal stroke of the target seat means a stroke of the target seat in the longitudinal direction of the vehicle.

In the embodiment of the present application, the state information of the target seat may be acquired by the system controller 201 in real time or at regular time, or the state information of the target seat may be acquired by the system controller 201 when the system controller 201 receives a pre-collision signal transmitted by the driving assistance system 204, or the state information of the target seat may be acquired by the system controller 201 when the system controller 201 receives a collision signal transmitted by the collision sensor 2051. The specific situation can be set according to actual requirements.

Step 402: and controlling a safety device corresponding to the target seat to execute an operating strategy matched with the state information when the vehicle is detected to be collided and the collision intensity is greater than or equal to the intensity threshold value.

The safety device corresponding to the target seat is a safety device provided for the target seat.

The intensity threshold value is a collision intensity value with a high probability of causing injury to people, so that the collision condition is serious when the vehicle collides and the collision intensity is greater than or equal to the intensity threshold value, and different safety system control modes can be adopted according to the longitudinal stroke of the seat, the inclination angle of the seat basin and the inclination angle of the backrest when the collision occurs in order to reduce the injury to the people caused by the collision, thereby playing a comprehensive protection role. For example, the longitudinal stroke and the backrest inclination angle of the seat affect the distance between the occupant and the airbag, and the pop-up state of the airbag can be determined according to the longitudinal stroke and the backrest inclination angle of the seat, so as to effectively protect the occupant. For another example, the inclination angle of the seat basin affects the lumbar vertebra safety of the passenger, so that when the inclination angle of the seat basin is large, the seat basin can be controlled to return to the position at a safe speed through the first buffer device, the inclination angle is reduced, the vertical acting force of the seat basin is buffered, and the injury of the seat basin to the lumbar vertebra of the passenger is reduced. In the embodiment of the application, the activation of the safety device follows an optimal principle, namely, the safety device can play an optimal protection effect and simultaneously avoid possible negative injury.

As an alternative embodiment, as shown in fig. 5, an airbag 2031 comprises: a first ejected state 20311 and a second ejected state 20312, the longitudinal extension of the airbag 2031 in the first ejected state 20311 being less than the longitudinal extension in the second ejected state 20312.

In the present embodiment, the airbag 2031 is preferably a double-contoured forward airbag. As shown in fig. 5, the first contour 20311 of the airbag 2031 locks the shape of the airbag 2031 into a smaller shape, so that when the occupant is closer to the airbag 2031, the airbag 2031 can be controlled to deploy only to the first contour 20311, thereby avoiding accidental injury to the occupant due to impact. As shown in fig. 5, the second contour 20312 of the airbag 2031 fills the shape of the airbag 2031 to a larger shape, and when the occupant is far from the airbag 2031, the airbag 2031 is controlled to deploy to the second contour 20312, so that the occupant far away can be effectively protected.

Wherein, step 402: controlling a safety device corresponding to the target seat and executing an operation strategy matched with the state information may include:

and controlling the air bag to pop up in a first pop-up state or a second pop-up state according to the longitudinal stroke of the target seat and the inclination angle of the backrest.

Because the distance between the passenger on the seat and the front safety air bag is influenced by the longitudinal stroke of the seat and the inclination angle of the backrest, the popup state of the safety air bag can be determined by combining the longitudinal stroke of the seat and the inclination angle of the backrest, so that the passenger can be better protected.

Specifically, in the case where the longitudinal stroke of the target seat is in the first stroke range and the inclination angle of the backrest is smaller than the first angle threshold, indicating that the occupant is closer to the airbag, the airbag may be controlled to pop up in the first pop-up state; when the longitudinal stroke of the target seat is in the first stroke range and the inclination angle of the backrest is greater than or equal to the first angle threshold, the distance between the occupant and the airbag is increased due to the inclination of the backrest, and the airbag can be controlled to pop up in the second pop-up state; in the case where the longitudinal stroke of the target seat is in the second stroke range, the distance between the occupant and the airbag is relatively long regardless of the reclining angle of the backrest, and the airbag may be controlled to pop up in the second pop-up state.

And the stroke value in the first stroke range is smaller than the stroke value in the second stroke range. For example, the whole longitudinal stroke range of the target seat is 0-500mm, and then the whole longitudinal stroke range can be divided into a plurality of sub-stroke ranges, such as two sub-stroke ranges of 0-250mm and 250-500mm, the sub-stroke range of 0-250mm corresponds to the first stroke range, and the sub-stroke range of 250-500mm corresponds to the second stroke range. The division of the specific travel range can be adjusted according to actual requirements, and is only for illustration and is a specific limitation for the embodiment of the present application.

Fig. 6 illustrates the control logic of the safety device in different states of the seat, and as shown in fig. 6, when the longitudinal stroke of the seat is in the first half (corresponding to the first stroke range) and the backrest inclination angle is small (corresponding to the inclination angle being smaller than the first angle threshold), the primary state of the airbag (i.e., the first pop-up state) is triggered. When the longitudinal stroke of the seat is in the first half and the backrest inclination angle is large (the corresponding inclination angle is greater than or equal to the first angle threshold), the secondary state of the airbag (i.e., the second pop-up state) is triggered. When the longitudinal stroke of the seat is in the second half, the secondary state of the airbag is triggered regardless of the inclination angle of the backrest.

As an alternative embodiment, as shown in fig. 3, the safety device may further include: and a second buffer 2033. The second cushioning device 2033 is provided between the seat 202 and the vehicle floor 300 for cushioning movement of the seat 202 in the vehicle front direction among the longitudinal directions, and therefore, the second cushioning device 2033 may also be referred to as a longitudinal energy management device. The second cushion 2033 is releasable under the control of the system controller 201 along the longitudinal stroke of the seat 202, and when released, the seat 202 and the occupant of the seat 202 move forward (i.e., in the vehicle front direction) in a controlled manner. During movement of the seat 202, the second cushioning device 2033 absorbs longitudinal energy from the impact.

Alternatively, the second buffer 2033 may be a device for energy buffering based on friction between mechanisms, or may be a device for energy buffering based on collapse, bending deformation, shearing, or the like of a structural member.

In any of the above embodiments, the second buffer 2033 has at least the following two features:

one feature is that it can be triggered, for example, by a safety mechanism such as a shear pin. When the second cushioning device 2033 is not triggered, the state of the seat 202 is stable; after the second cushioning device 2033 is activated, the seat 202 may be restrained from longitudinal movement.

Secondly, the seat 202 has the characteristic of applying resistance force in the direction opposite to the movement direction.

Wherein, step 102: controlling a safety device corresponding to the target seat and executing an operation strategy matched with the state information may include:

controlling the second buffer device to start under the condition that the longitudinal stroke of the target seat is in a second stroke range; and under the action of the second buffer device, the target seat moves towards the vehicle head direction at a speed less than the first speed threshold value in the longitudinal direction and stops moving when moving to the preset travel position.

The first speed threshold may be a boundary value between a safe speed and a dangerous speed of the seat moving speed during the collision, or may be one of the safe speeds.

In the embodiment of the application, when the distance between the passenger and the safety air bag is far away, the passenger can be effectively protected by the safety air bag, the purpose can be achieved by controlling the popping state of the safety air bag, and the distance between the passenger and the safety air bag can be drawn by the second buffer device so as to increase the contact area between the safety air bag and the passenger and ensure that the passenger is better protected. As shown in fig. 6, the longitudinal energy management device is activated when the seat stroke is in the second half. In addition, in the embodiment of the application, the seat can be controlled to stop when moving to the preset stroke position, so that the situation that the distance between a passenger and the safety air bag is too short and the safety air bag causes impact injury to the passenger is avoided.

Before collision happens, after the longitudinal position of the seat is adjusted every time, the second buffer device can lock the seat, so that the seat cannot move back and forth. After the collision happens, the seat can be unlocked, the seat can move forwards under the action of inertia, and in the process of moving forwards, the second buffer device can generate resistance to the forward movement of the seat, so that the forward movement speed of the seat is in a safe range.

As an alternative embodiment, step 102: controlling a safety device corresponding to the target seat, and implementing an operation strategy matched with the state information may include:

controlling the first buffer device to start under the condition that the inclination angle of the seat basin is greater than or equal to a second angle threshold value; under the action of the first buffer device, the target seat moves towards the vehicle floor at a speed lower than a second speed threshold value in the vertical direction, namely the seat pan rotates around the seat pan rotating shaft towards the vehicle floor.

The second angle threshold may be set according to an empirical value, for example, may be greater than or equal to 20 degrees, such as 20 degrees, 30 degrees, or 40 degrees.

The second speed threshold may be a boundary value between a safe speed and a dangerous speed of the seat pan rotation speed during the collision, or may be one of the safe speeds.

When the collision happens, the passenger can move forwards due to inertia, but due to the angle of the seat basin, the seat basin can generate vertical resistance to cause the injury of the lumbar vertebra of the passenger, and therefore, in the embodiment of the application, whether the first buffer device is activated or not can be determined by combining the state of the inclination angle of the seat basin. For example, when the seat pan inclination angle is larger (for example, greater than or equal to the second angle threshold), the seat pan can be controlled to move downwards at a safe speed, and meanwhile, the collision energy is absorbed, the vertical resistance of the seat pan is buffered, and the risk that the seat pan causes lumbar injury to the passenger is reduced. As shown in fig. 6, when the bowl tilt angle is large, the vertical energy management device is activated.

Before collision occurs, after the inclination angle of the seat basin is adjusted every time, the first buffer device can lock the seat and fix the inclination angle of the seat basin. After the collision happens, the seat basin can be unlocked to drive the seat basin to move downwards and generate resistance to the downward movement of the seat basin, so that the movement speed of the downward movement of the seat basin is within a safe range.

As an alternative embodiment, as shown in fig. 2, the safety device may further include: the mounting points are all at the seat belt 2034.

In the conventional seat belt for a vehicle, a mounting point is located on a vehicle body, and when a passenger sits on a seat in a lying posture as shown in fig. 1, the seat belt may not be able to restrain the passenger well, and may even cut the passenger when the vehicle collides. And the mounting point of the safety belt 2034 in the embodiment of the present application is on the seat, so that the safety belt 2034 can move along with the seat, and no matter what posture the passenger sits on the seat, the safety belt 2034 can be attached to the human body, thereby playing a better protection role for the passenger.

The safety device control method may further include:

under the condition that the probability of collision is greater than or equal to the probability threshold value, controlling the safety belt to be tightened in advance; and under the condition that collision does not occur after the preset time length of tightening the safety belt, the safety belt is controlled to be loosened.

The seat belt in the embodiment of the present application has a pretensioning function, that is, the seat belt is tightened in advance before a collision occurs. For example, the driving assistance system 204 of the vehicle may predict the possibility of collision according to an obstacle in front of the vehicle. When the driving assistance system 204 determines that a collision is unavoidable (e.g., when the probability of the collision is greater than or equal to the probability threshold), a pre-collision signal is sent to the system controller 201. After receiving the pre-crash signal, the system controller 201 activates the pre-tensioning function of the seat belt 2034 at a predetermined time before the crash occurs, tightens the seat belt 2034, reduces the gap between the seat belt and the occupant, and fixes the occupant to the seat more firmly in advance, thereby reducing the severity of the accident to a certain extent and improving the safety of the occupant. As shown in fig. 6, the safety belt is the basic device of the passive safety system, and is triggered when the seat is in any state and the collision reaches the strength threshold.

In the embodiment of the application, the pretensioning function of the safety belt is reversible, and if the collision does not actually happen, the safety belt is automatically released to keep the riding comfort of the passenger, so that no matter whether the collision finally happens or not, the safety belt cannot cause human body damage and property loss.

Statistics show that the time point at which the collision is irreversible is generally about 0.3S before the collision occurs, and therefore, the preset time can be set to 0.3S, or more, such as 0.5S, etc., where the technology allows.

Alternatively, the mounting point for the harness 2034 may specifically be located on the backrest 2022 of the seat 202.

Alternatively, seat belt 2034 may be a three-point seat belt, i.e., having three mounting points.

Optionally, the automatic tightening and loosening of the seat belt 2034 may be achieved by a motor, which rotates to tighten and loosen the seat belt webbing.

As an alternative embodiment, in the embodiment of the present application, the target seat may be a long-stroke seat, that is, the longitudinal stroke length of the target seat is greater than 250 mm. Wherein the 250mm travel seat is a conventional travel seat.

The technical scheme that this application embodiment provided is particularly useful for long stroke seat, and to long stroke seat, the condition far away apart from air bag takes place easily for the passenger on the seat, consequently, the different air bag and the second buffer of popping out the state that this application embodiment provided, reply passenger that can be fine apart from air bag far away's condition, effectively protect the passenger after the collision takes place.

Finally, it should be noted that the execution subject of the safety device control method provided in the embodiment of the present application may be the system controller 201.

The above is a description of a safety device control method provided in an embodiment of the present application.

To sum up, the technical scheme that this application embodiment provided, when the vehicle bumps, if the collision intensity has reached the intensity threshold value, then can take different safety protection measures according to the state of target seat to make the passenger in the collision accident can obtain effective and more comprehensive protection.

Having described the control method of the safety device according to the embodiment of the present application, the following describes a control device of the safety device according to the embodiment of the present application with reference to the accompanying drawings.

As shown in fig. 7, an embodiment of the present application further provides a safety device control apparatus applied to a vehicle.

Wherein the safety device comprises: an airbag and a first cushion device; the airbag includes at least two pop-up states, and the extension length of the airbag in the longitudinal direction of the vehicle in each pop-up state is different; the first buffer device is disposed between the seat and the floor panel, and is configured to buffer movement of the seat in a floor panel direction in a vertical direction of the vehicle.

Wherein the safety device control apparatus may include:

an obtaining module 701, configured to obtain state information of the target seat.

Wherein the state information includes: a longitudinal travel of the target seat, a tilt angle of a basin of the target seat, and a tilt angle of a backrest of the target seat.

And a control module 702, configured to control the safety device corresponding to the target seat to execute an operation strategy matching the state information when the vehicle collision is detected and the collision strength is greater than or equal to a strength threshold.

Optionally, the airbag comprises a first ejected state and a second ejected state, the longitudinal extension of the airbag in the first ejected state being less than the longitudinal extension in the second ejected state.

The control module 702 may include:

a first control unit for controlling the airbag to pop up in the first pop-up state or the second pop-up state in accordance with a longitudinal stroke of the target seat and a reclining angle of the backrest.

Optionally, the first control unit may include:

and the first control subunit is used for controlling the air bag to pop up in the first popping state under the condition that the longitudinal stroke of the target seat is in a first stroke range and the inclination angle of the backrest is smaller than a first angle threshold value.

A second control subunit configured to control the airbag to pop up in the second pop-up state, when the longitudinal stroke of the target seat is in the first stroke range and the reclining angle of the backrest is greater than or equal to the first angle threshold, or when the longitudinal stroke of the target seat is in a second stroke range.

Wherein the stroke value in the first stroke range is smaller than the stroke value in the second stroke range.

Optionally, the safety device may further include: and the second buffer device is arranged between the seat and the vehicle floor and used for buffering the movement of the seat along the vehicle head direction in the longitudinal direction.

The control module 702 may include:

and the second control unit is used for controlling the second buffer device to start under the condition that the longitudinal stroke of the target seat is in a second stroke range.

Under the action of the second buffer device, the target seat moves towards the vehicle head direction at a speed less than a first speed threshold value in the longitudinal direction and stops moving when moving to a preset travel position.

Optionally, the control module 702 may include:

and the third control unit is used for controlling the first buffer device to start under the condition that the inclination angle of the seat basin is greater than or equal to a second angle threshold value.

Wherein, under the action of the first buffer device, the target seat moves towards the vehicle floor direction at a speed less than a second speed threshold value in the vertical direction.

Optionally, the safety device may further include: the mounting points are all on the seat belt.

Wherein the safety device control apparatus may further include:

and the fourth control unit is used for controlling the seat belt to be tightened in advance when the probability of detecting the collision is greater than or equal to the probability threshold value.

A fifth control unit configured to control the seat belt to be loosened when a collision does not occur after a preset time period for tightening the seat belt.

Optionally, the target seat has a longitudinal stroke length greater than 250 mm.

The safety device control device provided in the embodiment of the present application can implement each process implemented by the safety device control device in the method embodiment shown in fig. 4, and is not described here again to avoid repetition.

In the embodiment of the application, when a vehicle collides, if the collision strength reaches the strength threshold value, different safety protection measures can be taken according to the state of the target seat, so that passengers in a collision accident can be effectively and comprehensively protected.

The embodiment of the present application further provides a vehicle, which includes a processor and a memory, where the memory stores a program or an instruction that can be executed on the processor, and when the program or the instruction is executed by the processor, the steps of the safety device control method embodiment are implemented, and the same technical effects can be achieved, and are not described herein again to avoid repetition.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the above-mentioned safety device control method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM, RAM, a magnetic disk, an optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A safety device control method applied to a vehicle, characterized in that the safety device includes: an airbag and a first cushion device; the airbag includes at least two pop-up states, and the extension length of the airbag in the longitudinal direction of the vehicle in each pop-up state is different; the first buffer device is arranged between the seat and the vehicle floor and used for buffering the movement of the seat along the vehicle floor direction in the vertical direction of the vehicle;

the safety device control method comprises the following steps:

acquiring state information of a target seat; wherein the state information includes: a longitudinal travel of the target seat, an angle of inclination of a basin of the target seat, and an angle of inclination of a back of the target seat;

2. The safety device control method according to claim 1, wherein the airbag includes a first ejected state and a second ejected state, a longitudinal extension length of the airbag in the first ejected state being smaller than a longitudinal extension length in the second ejected state;

the controlling the safety device corresponding to the target seat, executing the working strategy matched with the state information, and comprising:

controlling the airbag to pop up in the first pop-up state or the second pop-up state according to the longitudinal stroke of the target seat and the reclining angle of the backrest.

3. The safety device control method according to claim 2, wherein the controlling the airbag to be ejected in the first ejected state or the second ejected state in accordance with the longitudinal stroke of the target seat and the reclining angle of the seatback, includes:

controlling the airbag to pop up in the first pop-up state under the condition that the longitudinal stroke of the target seat is in a first stroke range and the inclination angle of the backrest is smaller than a first angle threshold;

controlling the airbag to pop up in the second pop-up state if the longitudinal stroke of the target seat is in the first stroke range and the reclining angle of the backrest is greater than or equal to the first angle threshold, or if the longitudinal stroke of the target seat is in a second stroke range;

4. The safety device control method according to claim 1 or 3, wherein the safety device further comprises: the second buffer device is arranged between the seat and the vehicle floor and used for buffering the movement of the seat along the vehicle head direction in the longitudinal direction;

the controlling the safety device corresponding to the target seat, and executing the working strategy matched with the state information comprises:

controlling the second cushioning device to activate if the longitudinal travel of the target seat is within a second range of travel; under the action of the second buffer device, the target seat moves towards the vehicle head direction at a speed less than a first speed threshold value in the longitudinal direction and stops moving when moving to a preset travel position.

5. The safety device control method according to claim 1, wherein the controlling the safety device corresponding to the target seat, and executing an operation policy matched with the state information includes:

controlling the first buffer device to start under the condition that the inclination angle of the seat basin is greater than or equal to a second angle threshold value; wherein, under the action of the first buffer device, the target seat moves towards the vehicle floor direction at a speed less than a second speed threshold value in the vertical direction.

6. The safety device control method according to claim 1, wherein the safety device further comprises: the mounting points are all arranged on a safety belt on the seat;

the safety device control method further includes:

controlling the safety belt to be tightened in advance under the condition that the probability of collision is greater than or equal to a probability threshold value;

and under the condition that no collision occurs after the preset time length of the safety belt is tightened, controlling the safety belt to be loosened.

7. The safety device control method of claim 1, wherein the target seat has a longitudinal stroke length greater than 250 mm.

8. A safety device control device applied to a vehicle, characterized in that the safety device comprises: an airbag and a first cushion device; the airbag includes at least two pop-up states, and the extension length of the airbag in the longitudinal direction of the vehicle in each pop-up state is different; the first buffer device is arranged between the seat and the vehicle floor and used for buffering the movement of the seat along the vehicle floor direction in the vertical direction of the vehicle;

wherein the safety device control device includes:

the acquisition module is used for acquiring the state information of the target seat; wherein the state information includes: a longitudinal travel of the target seat, a tilt angle of a basin of the target seat, and a tilt angle of a backrest of the target seat;

9. The safety device control apparatus according to claim 8, wherein the airbag includes a first ejected state and a second ejected state, a longitudinal extension of the airbag in the first ejected state being smaller than a longitudinal extension in the second ejected state;

the control module includes:

10. The safety device control apparatus according to claim 9, wherein the first control unit includes:

a first control subunit, configured to control the airbag to pop up in the first pop-up state when the longitudinal stroke of the target seat is within a first stroke range and the inclination angle of the backrest is smaller than a first angle threshold;

a second control subunit, configured to control the airbag to pop up in the second pop-up state if the longitudinal stroke of the target seat is in the first stroke range and the reclining angle of the backrest is greater than or equal to the first angle threshold, or if the longitudinal stroke of the target seat is in a second stroke range;

11. The safety device control apparatus according to claim 8 or 10, characterized in that the safety device further comprises: the second buffer device is arranged between the seat and the vehicle floor and used for buffering the movement of the seat along the vehicle head direction in the longitudinal direction;

the control module includes:

the second control unit is used for controlling the second buffer device to start under the condition that the longitudinal stroke of the target seat is in a second stroke range; under the action of the second buffer device, the target seat moves towards the vehicle head direction at a speed less than a first speed threshold value in the longitudinal direction and stops moving when moving to a preset travel position.

12. The safety device control apparatus of claim 8, wherein the control module comprises:

the third control unit is used for controlling the first buffer device to start under the condition that the inclination angle of the seat basin is greater than or equal to a second angle threshold value; wherein, under the action of the first buffer device, the target seat moves towards the vehicle floor direction at a speed less than a second speed threshold value in the vertical direction.

13. The safety device control apparatus according to claim 8, characterized in that the safety device further comprises: the mounting points are all arranged on a safety belt on the seat;

the safety device control apparatus further includes:

a fourth control unit configured to control the seat belt to be tightened in advance when the probability of the collision is detected to be greater than or equal to a probability threshold;

and the fifth control unit is used for controlling the safety belt to be loosened under the condition that no collision occurs after the preset time length of tightening the safety belt.

14. The safety device control of claim 8, wherein the target seat has a longitudinal stroke length greater than 250 mm.

15. A vehicle comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions when executed by the processor implementing the steps of the safety device control method of any of claims 1 to 7.

16. A readable storage medium, on which a program or instructions are stored, which when executed by a processor implement the steps of the safety device control method according to any one of claims 1 to 7.