Vehicle, seat system, control system and method for a seat airbag

Abstract

The application provides a vehicle, a seat system, a control system and a method of a seat air bag, and belongs to the technical field of vehicle parts. The control method comprises the following steps: obtaining a vehicle collision direction and seat state information, the seat state information at least comprising an actual distance between two seats, determining a target seat according to the vehicle collision direction, the target seat being closer to the collision side of the vehicle; determining a first triggering time adjustment value according to the actual distance between the two adjacent seats, the first triggering time adjustment value being positively correlated with the actual distance; determining an adjusted triggering time according to a preset triggering time of the target seat and the first triggering time adjustment value; and triggering a side protection air bag of the target seat based on the adjusted triggering time. The application is beneficial to making the position and shape of the side protection air bag after inflation closer to the design state when the side protection air bag actually contacts the passenger, and is beneficial to improving the protection effect on the passenger.

Description

Technical Field

[0001] This application relates to the field of vehicle component technology, and in particular to a control system and method for a vehicle, a seat system, and a seat airbag. Background Technology

[0002] In related technologies, to improve occupant protection, some vehicles are equipped with side airbags in their seats. When a vehicle is involved in a collision along its width, the side airbags deploy and inflate, blocking the occupants in that direction and providing protection. The position and shape of the side airbag upon contact with the occupant after deployment have a significant impact on the protective effect. Deploying too early or too late will result in a significant difference between the actual position and shape of the airbag upon contact with the occupant and its designed position and shape, thus affecting the protective effect. Summary of the Invention

[0003] This application provides a vehicle, a seat system, a control system and method for seat airbags, which helps to make the side protection airbags of the seat more closely approximate the designed position and shape when they come into contact with the occupant after being activated and inflated.

[0004] This application provides a method for controlling seat airbags in a side collision of a vehicle, wherein the vehicle includes at least two adjacent seats arranged along the width direction of the vehicle, and side protection airbags are provided on the adjacent sides of the two seats. The control method includes: The vehicle's collision direction and seat status information are obtained, wherein the seat status information includes at least the actual distance between the two seats. Based on the direction of the collision with the vehicle, a target seat and a reference seat are determined. Among two adjacent seats, the target seat is closer to the side of the vehicle that was hit than the reference seat. The first excitation time adjustment value is determined based on the actual distance between two adjacent seats, and the first excitation time adjustment value is positively correlated with the actual distance. The adjusted activation time of the target seat is determined based on the preset activation time of the target seat and the first activation time adjustment value. The side airbags of the target seat are activated based on the activation timing after the target seat is adjusted. Compared with related technologies, the side airbag of the target seat in this application is deployed based on the adjusted deployment time of the target seat. The adjusted deployment time of the target seat is determined based on a first deployment time adjustment value, which is determined based on the distance between two adjacent seats along the width of the vehicle. The deployment time of the side airbag of the target seat is adjusted based on the actual distance between two adjacent seats, reducing the influence of the distance between the two adjacent seats on the position and shape of the side airbag when it contacts the occupant after deployment and inflation. This helps to make the position and shape of the side airbag when it actually contacts the occupant after deployment and inflation closer to the design state, thus improving the protection effect for the occupant.

[0005] In one embodiment of this application, the two seats have the same orientation, and the seat status information further includes the occupant vital signs parameters of the reference seat, which are used to characterize the occupant's body type; Determining the post-adjustment excitation time of the target seat includes: Based on the occupant vital signs parameters of the reference seat, a second excitation time adjustment value is determined, wherein the second excitation time adjustment value is negatively correlated with the body shape of the occupant of the reference seat; The adjusted activation time of the target seat is determined based on the preset activation time of the target seat, the first activation time adjustment value, and the second activation time adjustment value.

[0006] The beneficial effects of the above embodiments are that the activation time of the side airbag of the target seat can also be adjusted according to the body shape of the occupant on the reference seat, which reduces the interference of the occupant's body size on the position and shape of the side airbag when it contacts the occupant after activation and inflation. This helps to make the position and shape of the side airbag when it actually contacts the occupant more closely resemble the design state, thereby improving the protection effect on the occupant.

[0007] In one embodiment of this application, determining the adjusted activation time of the target seat based on the preset activation time of the target seat, the first activation time adjustment value, and the second activation time adjustment value includes: The second triggering time adjustment value is an advance value based on the preset triggering time. The larger the size of the occupant of the reference seat, the greater the advance value.

[0008] The beneficial effects of adopting the above embodiments are as follows: the design contact position refers to the contact position between the occupant and the airbag after it is deployed and inflated, which is expected during the vehicle design. The larger the size of the occupant on the reference seat, the closer the occupant is to the design contact position, and the greater the advance value. This allows the side protection airbag of the target seat to be deployed earlier, which in turn makes the position and shape of the side protection airbag when it actually contacts the occupant after deployment and inflating closer to the design state, thus improving the protection effect on the occupant.

[0009] In one embodiment of this application, the backrests of two adjacent seats have an included angle, the two adjacent seats are a front seat and a rear seat respectively, and along the orientation of the seats, the backrest of the rear seat is further back than the backrest of the front seat, and the seat status information also includes the included angle; The control method further includes: The third excitation time adjustment value is determined based on the included angle between the backrests of the two seats and the mapping relationship between the included angle between the backrests of the two seats and the third excitation time adjustment value. If the rear seat is the reference seat, then the adjusted excitation time of the reference seat is determined according to the preset excitation time of the reference seat and the third excitation time adjustment value; If the rear seat is the target seat, then the adjusted activation time of the target seat is determined based on the preset activation time of the target seat, the first activation time adjustment value, and the third activation time adjustment value.

[0010] The beneficial effects of the above embodiments are as follows: the side airbags of the rear seats are activated according to the third activation time adjustment value, so that the activation time of the side airbags of the rear seats is also adjusted according to the angle between the backrests of the two adjacent seats. This reduces the interference of the angle between the backrests of the two adjacent seats on the position and shape of the side airbags of the two adjacent seats when they come into contact with each other after activation and inflation. This makes the position and shape of the side airbags of the rear seats closer to the design state when they come into contact with the side airbags of the front seats. This is conducive to the fact that the side airbags of the two adjacent seats can be deployed forward normally when they are activated and inflated, thus improving the protection effect for the occupants.

[0011] In one embodiment of this application, the third excitation time adjustment value is an advance value based on the preset excitation time of the rear seat. The larger the angle between the backrest of the rear seat and the backrest of the other seat, the greater the advance value.

[0012] The beneficial effects of the above embodiments are as follows: the larger the angle between the backrest of the rear seat and the backrest of another seat, the greater the distance between the backrest of the rear seat and the designed contact position along the seat orientation. The increased advance deployment of the rear seat's side airbags allows them to deploy earlier, enabling them to inflate more fully along the seat orientation before contacting the reference seat's side airbag. This also ensures that the position and shape of the rear seat's side airbag are closer to the design state when it contacts the side airbag of the adjacent seat, reducing the risk of tilting or deflection during inflation. This allows the rear seat's side airbag to deploy normally forward and inward during inflation, thereby improving the protection for the occupant.

[0013] In one embodiment of this application, determining the adjusted activation time of the target seat based on the preset activation time of the target seat and the first activation time adjustment value includes: The actual distance between two adjacent seats is compared with the preset distance. If the actual distance is greater than the preset distance, the first excitation time adjustment value is a delay value based on the preset excitation time of the target seat. The larger the actual distance, the greater the delay magnitude of the delay value. If the actual distance is less than the preset distance, the first activation time adjustment value is an advance value based on the preset activation time of the target seat. The smaller the actual distance, the greater the advance value. If the actual spacing is equal to the preset spacing, then the adjustment value of the first excitation time is 0.

[0014] The beneficial effects of the above embodiments are as follows: If the distance between the reference seat and the target seat in the width direction of the vehicle is equal to the preset distance, the position and shape of the side airbag of the target seat after activation and inflation are close to the design state when it actually contacts the occupant. The adjustment value of the first activation time is 0, and there is no need to adjust the activation time according to the distance between the reference seat and the target seat in the width direction of the vehicle. If the distance between the reference seat and the target seat in the width direction of the vehicle is greater than the preset distance, the side airbag of the target seat is activated later. The larger the distance, the greater the delay. This is beneficial to make the position and shape of the side airbag of the target seat after activation and inflation closer to the design state when it actually contacts the occupant, which is beneficial to improving the protection effect for the occupant. Conversely, if the distance between the reference seat and the target seat in the width direction of the vehicle is less than the preset distance, the side airbag of the target seat will be deployed in advance. The smaller the distance between the reference seat and the target seat in the width direction of the vehicle, the greater the advance. This is beneficial to make the position and shape of the side airbag of the target seat after deployment and inflation closer to the design state when it actually contacts the occupant, which is beneficial to improving the protection effect on the occupant.

[0015] This application also provides a vehicle seat system for implementing the method for controlling the seat airbag in a side-impact collision as described in any of the preceding claims, comprising: Seats, wherein there are at least two seats, and the two seats are arranged sequentially along the width direction of the vehicle; and An adjustment assembly, at least one of the seats is disposed on the adjustment assembly, the adjustment assembly being used to adjust the actual distance between the two seats along the width direction of the vehicle; Along the width direction of the vehicle, each of the seats is provided with a side airbag on the side near the adjacent seat. The side airbag of the seat is used to inflate and extend forward of the seat to protect the occupant in the width direction of the vehicle.

[0016] Compared with related technologies, in the seat system of this application, the side airbag of the target seat is activated according to the adjusted activation time of the target seat. The adjusted activation time of the target seat is determined based on a first activation time adjustment value, which is determined based on the distance between two adjacent seats along the width direction of the vehicle. The activation time of the side airbag of the target seat is adjusted based on the actual distance between two adjacent seats, reducing the influence of the distance between the two adjacent seats on the position and shape of the side airbag when it contacts the occupant after activation and inflation. This helps to make the position and shape of the side airbag when it actually contacts the occupant after activation and inflation closer to the design state, thus improving the protection effect for the occupant.

[0017] In one embodiment of this application, the seat has a frame, the lateral protection airbag includes an air bag and an inflation unit connected to the air bag, the air bag includes a first part located on the side of the frame and a second part located on the rear side of the frame, and the inflation unit is located on the rear side of the frame and is arranged along the width direction of the vehicle.

[0018] The advantages of the above embodiments are that the inflation unit and the airbag are separately arranged, and the inflation unit is arranged along the width direction of the vehicle. The airbag includes a first part located on the side of the frame and a second part located on the rear side of the frame, which makes the deployment of the lateral protection airbag more flexible and more adaptable to the compact deployment space inside the seat.

[0019] This application also provides a control system for seat airbags in a side collision of a vehicle, wherein the vehicle includes at least two adjacent seats arranged along the width direction of the vehicle, and each of the two seats is provided with a side protection airbag on its adjacent side.

[0020] The control system includes: The acquisition module is used to acquire collision direction and seat status information of the vehicle, wherein the seat status information includes at least the actual distance between the two seats. A logic module is configured to determine a target seat and a reference seat based on the collision direction of the vehicle, wherein, among two adjacent seats, the target seat is closer to the collision side of the vehicle than the reference seat; determine a first activation time adjustment value based on the actual distance between the two adjacent seats, the first activation time adjustment value being positively correlated with the actual distance; and determine an adjusted activation time of the target seat based on a preset activation time of the target seat and the first activation time adjustment value; and The activation module controls the activation of the side protection airbags of the target seat according to the activation time after the target seat is adjusted.

[0021] Compared with related technologies, in the control system of this application, the side airbag of the target seat is activated according to the adjusted activation time of the target seat. The adjusted activation time of the target seat is determined based on a first activation time adjustment value, which is determined based on the distance between two adjacent seats along the width of the vehicle. The activation time of the side airbag of the target seat is adjusted based on the actual distance between two adjacent seats, reducing the influence of the distance between the two adjacent seats on the position and shape of the side airbag when it contacts the occupant after activation and inflation. This helps to make the position and shape of the side airbag when it actually contacts the occupant after activation and inflation closer to the design state, thus improving the protection effect for the occupant.

[0022] This application also provides a vehicle including a control system for a seat airbag in a side-impact collision as described in any of the preceding claims, or a seat system as described in any of the preceding claims.

[0023] Compared with related technologies, in the vehicle of this application, the side airbag of the target seat is deployed according to the adjusted deployment time of the target seat. The adjusted deployment time of the target seat is determined based on a first deployment time adjustment value, which is determined based on the distance between two adjacent seats along the width direction of the vehicle. The deployment time of the side airbag of the target seat is adjusted based on the actual distance between two adjacent seats, reducing the influence of the distance between the two adjacent seats on the position and shape of the side airbag when it contacts the occupant after deployment and inflation. This helps to make the position and shape of the side airbag when it actually contacts the occupant after deployment and inflation closer to the design state, thus improving the protection effect for the occupant. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0025] In the attached diagram: Figure 1 A schematic flowchart illustrating a method for controlling a vehicle side-impact seat airbag according to an embodiment of this application; Figure 2 A structural block diagram of a vehicle side-impact seat airbag control system provided in an embodiment of this application; Figure 3 A schematic diagram of the arrangement structure of a lateral protection airbag provided in an embodiment of this application; Figure 4 This is a second schematic diagram of the arrangement structure of the lateral protection airbag provided in one embodiment of this application; Figure 5 This is a schematic diagram of the structure of the air bag before folding according to an embodiment of this application; Figure 6 This is a schematic diagram of the structure of an inflated air bag provided in one embodiment of this application; Figure 7 This is a structural schematic diagram of a seat provided in one embodiment of this application.

[0026] The attached diagrams are labeled as follows: acquisition module 201, logic module 202, excitation module 203, frame 310, inflation unit 320, first part 321, second part 322, pull strap 323, inflated air bag 324, air bag before folding 325, seat 40, slide rail 41. Detailed Implementation

[0027] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0028] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the shape, quantity and proportion of each component can be changed at will, and the layout of the components may also be more complex.

[0029] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present application. However, it will be apparent to those skilled in the art that embodiments of the present application may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present application.

[0030] In related technologies, to improve occupant protection, some vehicles are equipped with side airbags in their seats. When a vehicle is involved in a collision along its width, the side airbags deploy and inflate, blocking the occupants in that direction and providing protection. The position and shape of the side airbag upon contact with the occupant after deployment have a significant impact on the protective effect. Deploying too early or too late will result in a significant difference between the actual position and shape of the airbag upon contact with the occupant and its designed position and shape, thus affecting the protective effect.

[0031] The deployment of a side airbag refers to the process by which, after a vehicle is subjected to a collision of a set intensity or higher, the gas generator (i.e., the inflation unit) of the side airbag receives an ignition signal and ignites to inflate the airbag, causing it to expand and deploy to cushion the impact on the occupants. The deployment moment of the side airbag refers to the moment when the gas generator of the side airbag begins to ignite and operate.

[0032] When the position of the vehicle seats is adjusted along the width of the vehicle, the positions of two adjacent seats in the width direction will often change. If the side airbags are still deployed according to the preset deployment time, there is a risk that the actual position and shape of the airbag when it contacts the occupant after deployment will be significantly different from the designed position and shape, which is not conducive to the protection of the occupants.

[0033] In view of this, this application provides a control system and method for a vehicle, a seat system, and a seat airbag, which helps to make the side protection airbag of the seat more closely approximate the designed position and shape when it comes into contact with the occupant after it is activated and inflated.

[0034] In one embodiment of this application, the vehicle includes at least two adjacent seats, which are arranged sequentially along the width direction of the vehicle. Each of the two seats is provided with a side airbag on its adjacent side, that is, the side airbag is located on the side of the seat closer to the other seat in the width direction of the vehicle.

[0035] In this embodiment, the spacing between the two seats along the width of the vehicle is adjustable to accommodate the needs of different occupants.

[0036] Please see Figure 1 One embodiment of this application provides a method for controlling a vehicle seat airbag in a side collision, the method comprising the following steps: S110: Obtain the collision direction of the vehicle and the seat status information. The seat status information includes at least the actual distance between the two seats. Based on the collision direction of the vehicle, determine the target seat and the reference seat.

[0037] In this embodiment, the target seat is closer to the collision side of the vehicle than the reference seat, that is, along the collision direction of the vehicle, the two seats are the target seat and the reference seat in sequence.

[0038] S120: Determine the adjustment value for the first excitation moment based on the actual distance between two adjacent seats. The adjustment value for the first excitation moment is positively correlated with the distance. S130: Determine the adjusted excitation time of the target seat based on the preset excitation time of the target seat and the first excitation time adjustment value; S140: The side airbags of the target seat are deployed according to the deployment time after the target seat is adjusted.

[0039] In this embodiment, the side airbag of the target seat is deployed according to the adjusted deployment time of the target seat. The adjusted deployment time of the target seat is determined based on a first deployment time adjustment value, which is determined based on the actual distance between two adjacent seats along the width direction of the vehicle. Therefore, in this embodiment, the deployment time of the side airbag of the target seat can be adjusted according to the actual distance between two adjacent seats, reducing the influence of the distance between two adjacent seats on the position and shape of the side airbag when it contacts the occupant after deployment and inflation. This helps to make the position and shape of the side airbag when it contacts the occupant after deployment and inflation closer to the design state, thus improving the protection effect for the occupant.

[0040] In this embodiment, the actual distance refers to the distance between the target seat and the reference seat along the width direction of the vehicle before the vehicle is hit.

[0041] In this embodiment, the lateral airbag of the target seat near the reference seat primarily protects the occupant of the reference seat in the width direction of the vehicle. In a side collision, the occupant of the target seat is closer to the impact side of the vehicle than the occupant of the reference seat. During a side collision, the occupant of the reference seat, due to inertia, will move relative to the vehicle towards the impact side, i.e., towards the target seat. The lateral airbag of the target seat near the reference seat inflates and expands forward along the seat's orientation, blocking the occupant of the reference seat in the width direction of the vehicle, thus protecting the occupant of the reference seat.

[0042] In this embodiment, the preset activation time of the target seat is adjusted according to the first activation time adjustment value to obtain the adjusted activation time. The side protection airbag on the reference seat can then be activated according to the preset activation time of the reference seat.

[0043] In this embodiment, along the width direction of the vehicle, adjacent seats face the same direction, meaning the target seat and the reference seat face the same direction. In one embodiment of this application, step S130, which involves determining the adjusted activation time of the target seat based on its preset activation time and the first activation time adjustment value, includes the following sub-steps: S131: Compare the actual distance between two adjacent seats with the preset distance to obtain the comparison result; S132: Determine the post-adjustment excitation time of the target seat based on the comparison results.

[0044] The preset spacing is the distance between two adjacent seats in the design state.

[0045] In step S132, if the actual distance is equal to the preset distance, the first activation time adjustment value is 0. Since the distance between the reference seat and the target seat in the width direction of the vehicle is equal to the preset distance, the position and shape of the side airbag of the target seat after activation and inflation are close to or equal to the design state when it actually contacts the occupant. Therefore, the first activation time adjustment value is 0, and there is no need to adjust the activation time according to the distance between the reference seat and the target seat in the width direction of the vehicle.

[0046] In step S132, if the actual distance is less than the preset distance, the first excitation time adjustment value is an advance value based on the preset excitation time of the target seat. The smaller the actual distance, the greater the advance value.

[0047] Because the actual distance between the reference seat and the target seat in the width direction of the vehicle is less than the preset distance, after the vehicle is hit, the occupant in the reference seat will move towards the target seat and make contact with the side airbag of the target seat after it has been activated and inflated. Therefore, the side airbag of the target seat can be activated in advance so that the position and shape of the side airbag of the target seat after it has been activated and inflated are close to the design state when it actually makes contact with the occupant, thereby improving the protection effect on the occupant in the reference seat.

[0048] Meanwhile, the smaller the actual distance between the reference seat and the target seat in the width direction of the vehicle, the shorter the movement time required for the occupant on the reference seat to move towards the target seat and make contact with the side airbag of the target seat after activation and inflation. Therefore, the greater the advance, the closer the position and shape of the side airbag of the target seat when it actually contacts the occupant after activation and inflation is to the design state, thus improving the protection effect on the occupant.

[0049] In step S132, if the actual distance is greater than the preset distance, the first excitation time adjustment value is a delayed value based on the preset excitation time of the target seat. The larger the actual distance, the greater the delay of the delayed value.

[0050] Because the actual distance between the reference seat and the target seat in the width direction of the vehicle is greater than the preset distance, after the vehicle is hit, it will take longer for the occupant in the reference seat to move towards the target seat and make contact with the side airbag of the target seat after it has been activated and inflated. Therefore, the activation of the side airbag of the target seat is delayed so that the position and shape of the side airbag of the target seat after it has been activated and inflated are close to the design state when it actually makes contact with the occupant, thereby improving the protection effect on the occupant in the reference seat.

[0051] The greater the actual distance between the reference seat and the target seat in the width direction of the vehicle, the longer the movement time required for the occupant in the reference seat to move towards the target seat and make contact with the inflated lateral airbag of the target seat. Therefore, the greater the delay, the closer the position and shape of the inflated lateral airbag of the target seat is to the design state when it actually contacts the occupant, thus improving the protection effect on the occupant.

[0052] In one embodiment of this application, the seat status information further includes occupant vital signs parameters of a reference seat, which characterize the occupant's body shape. In some embodiments, the occupant vital signs parameters can be the occupant's weight obtained through a gravity sensor or similar means. Under normal circumstances, human body density remains within a stable range; the greater the occupant's weight, the larger their body shape. Therefore, the occupant's body shape can be directly characterized by their weight. Correspondingly, weight can also be converted into body shape, and the converted body shape data can be used as the occupant's vital signs parameters. In this embodiment, images of the occupant on the reference seat are acquired using sensors such as cameras installed inside the vehicle, and the images are analyzed and recognized using artificial intelligence (such as neural network models) to obtain the occupant's body shape on the reference seat.

[0053] Step S130, which is the step of determining the excitation time after the adjustment of the target seat, includes the following sub-steps: S133: Based on the occupant vital signs parameters of the reference seat, determine the adjustment value for the second excitation time. The adjustment value for the second excitation time is negatively correlated with the body shape of the occupant of the reference seat.

[0054] S134: Determine the adjusted activation time based on the preset activation time of the target seat, the first activation time adjustment value, and the second activation time adjustment value.

[0055] The actual distance between the occupant in the reference seat and the target seat in the width direction of the vehicle is affected by the body size of the occupant in the reference seat. Therefore, in this embodiment, the activation time of the side airbag of the target seat is also adjusted according to the body size of the occupant in the reference seat. This reduces the interference of the occupant's body size on the position and shape of the side airbag when it contacts the occupant after activation and inflation. This helps to make the position and shape of the side airbag when it actually contacts the occupant closer to the design state, thereby improving the protection effect on the occupant.

[0056] In one embodiment of this application, in step S134, that is, in the step of determining the adjusted activation time based on the preset activation time of the target seat, the first activation time adjustment value, and the second activation time adjustment value, the second activation time adjustment value is an advance value based on the preset activation time of the target seat. The larger the body size of the occupant of the reference seat, the greater the advance value.

[0057] In this embodiment, the larger the size of the occupant on the reference seat, the smaller the actual distance between the occupant on the reference seat and the target seat in the width direction of the vehicle, the closer the occupant is to the designed contact position, and the greater the advance value, so that the side protection airbag of the target seat can be deployed earlier.

[0058] Conversely, the smaller the size of the occupant in the reference seat, the larger the actual distance between the occupant in the reference seat and the target seat in the width direction of the vehicle. The farther the occupant is from the designed contact position, the smaller the advance value of the side protection airbag of the target seat can be. This is beneficial to make the position and shape of the side protection airbag when it actually contacts the occupant after it is deployed and inflated closer to the design state, which is conducive to improving the protection effect on the occupant.

[0059] In this embodiment, the first excitation time adjustment value and the second excitation time adjustment value can be coupled together. The preset excitation time is adjusted according to the first excitation time adjustment value and the second excitation time adjustment value to determine the adjusted excitation time of the target seat.

[0060] For example, the occupant's body size can be divided into three levels, A, B, and C, from small to large. Under the condition of each actual distance, when the occupant's body size on the reference seat is in the three levels of A, B, and C, the activation time after adjustment is shown in the table below.

[0061] Where T represents the preset activation time of the target seat.

[0062]

[0063] In one embodiment of this application, the backrests of two adjacent seats along the width direction of the vehicle form an angle. Therefore, in the two adjacent seats, along the length direction of the vehicle, the backrest of one seat is relatively forward, while the backrest of the other seat is relatively backward. In this embodiment, the two adjacent seats include a front seat and a rear seat. Along the length direction of the vehicle, the backrest of the front seat is relatively forward, while the backrest of the rear seat is further backward than the backrest of the front seat.

[0064] The seat status information also includes the aforementioned included angle, and the activation time after the target seat adjustment includes a first activation time and a second activation time. In this embodiment, the control method further includes the following sub-steps: S136: Determine the third excitation time adjustment value based on the included angle between the backrests of the two seats and the mapping relationship between the included angle between the backrests of the two seats and the third excitation time adjustment value; S137: If the rear seat is the target seat, determine the adjusted activation time of the target seat based on the preset activation time of the target seat, the first activation time adjustment value, and the third activation time adjustment value, that is, determine the first activation time. In some embodiments of this application, in step S137, if the rear seat is a reference seat, the adjusted excitation time of the reference seat is determined according to the preset excitation time of the reference seat and the third excitation time adjustment value. The side airbags of the rear seats are activated according to the third activation time adjustment value. The activation time of the side airbags of the rear seats is also adjusted according to the angle between the backrests of the two adjacent seats. This reduces the interference of the angle between the backrests of the two adjacent seats on the position and shape of the side airbags when they come into contact after activation and inflation. This makes the position and shape of the side airbags of the rear seats closer to the design state when they come into contact with the side airbags of the front seats. This is conducive to the side airbags of the two adjacent seats being able to deploy forward normally when they are activated and inflated, thus improving the protection effect for the occupants.

[0065] In some embodiments of this application, in step S137, if the target seat is a forward seat, the adjusted activation time of the target seat, i.e., the second activation time, is determined based on the preset activation time of the target seat and the first activation time adjustment value.

[0066] In step S140, if the target seat is a rear seat, the side airbag of the target seat is activated according to the first activation time; if the target seat is a front seat, the side airbag of the target seat is activated according to the second activation time.

[0067] When the rear seat is the target seat, the side airbag of the target seat is activated according to the third activation time adjustment value. This makes the activation time of the side airbag of the rear seat also adjusted according to the angle between the backrests of the two adjacent seats. This reduces the interference of the angle between the backrests of the two adjacent seats on the position and shape of the side airbag when it contacts the occupant after activation and inflation. This helps to make the position and shape of the side airbag when it actually contacts the occupant closer to the design state, thus improving the protection effect on the occupant.

[0068] In one embodiment of this application, the third excitation time adjustment value is an advance value based on the preset excitation time of the rear seat. The larger the angle between the backrest of the rear seat and the backrest of the other seat, the greater the advance value.

[0069] In this embodiment, the rear seat can be either a reference seat or a target seat.

[0070] The larger the angle between the backrest of the rear seat and the backrest of another seat, the greater the distance between the backrest of the rear seat and the designed contact position along the seat's orientation. A greater advance deployment margin for the rear seat's side airbags allows them to deploy earlier, enabling them to inflate more fully along the seat's orientation before contacting the reference seat's side airbag. This also ensures that the position and shape of the rear seat's side airbag are closer to the design state when it contacts the side airbag of the adjacent seat, reducing the risk of tilting or deflection during inflation. This allows the rear seat's side airbags to deploy forward normally during inflation, improving occupant protection.

[0071] In this embodiment, before step S136, that is, before determining the third excitation time adjustment value based on the included angle between the backrests of the two seats and the mapping relationship between the included angle between the backrests of the two seats and the third excitation time adjustment value, step S130 further includes the following steps: S135: Compare the angle between the backrests of the two seats with a preset angle threshold. If the angle between the backrests of the two seats meets the angle threshold, the angle between the backrests of the two seats can be considered to be 0, that is, the advance of the adjustment value at the third excitation time is 0. If the angle between the backrests of the two seats exceeds the angle threshold, proceed to steps S136 to S138.

[0072] The angle threshold characterizes the minimum angle (e.g., 5°) that the backrests of two adjacent seats must meet when the activation time of the lateral protection airbags of the rear seats is adjusted according to the angle between the backrests of the two adjacent seats. If the angle between the backrests of the two adjacent seats is too small, no adjustment is required.

[0073] In this embodiment, the seat orientation is along the length of the vehicle. In this embodiment, the seat typically faces forward of the vehicle. After the seat is installed in the vehicle, the side of the seat is also the surface of the seat in the width direction of the vehicle. In this embodiment, two adjacent seats can be seats in the second or third row of the vehicle.

[0074] In some implementations, the adjustment values ​​for the first excitation time, the second excitation time, and the third excitation time can be adjustment coefficients.

[0075] Taking the target seat as an example, the adjustment coefficient can be less than 1, causing the adjusted activation time of the target seat to be earlier than the preset activation time; the adjustment coefficient can also be greater than 1, causing the adjusted activation time of the target seat to be later than the preset activation time. The adjustment coefficient can also be equal to 1, in which case the adjusted activation time of the target seat will be the same as the preset activation time.

[0076] In this embodiment, the first excitation time adjustment value, the second excitation time adjustment value, and the third excitation time adjustment value are adjustment values.

[0077] Taking the target seat as an example, when the adjusted activation time of the target seat is advanced, the adjustment value is less than 0, representing an advance value, causing the adjusted activation time of the target seat to be earlier than the preset activation time of the target seat. When the adjusted activation time of the target seat is delayed, the adjustment value is greater than 0, representing a delay value, causing the adjusted activation time of the target seat to be delayed compared to the preset activation time of the target seat. If the adjustment value of the target seat is equal to 0, then the adjusted activation time of the target seat is the same as the preset activation time of the target seat.

[0078] In some embodiments, the timing of the adjusted target seat and reference seat can also be adjusted according to the collision intensity.

[0079] like Figure 2 As shown, this application also provides a control system for a seat airbag in a side collision of a vehicle. The vehicle includes at least two adjacent seats, which are arranged sequentially along the width of the vehicle. Both seats are equipped with side protection airbags, which are located on the side of the seat closest to the other seat.

[0080] The control system includes a data acquisition module 201, a logic module 202, and an activation module 203.

[0081] The acquisition module 201 is used to acquire information on the direction of the collision and the status of the seats. The seat status information includes at least the actual distance between the two seats.

[0082] The logic module 202 is used to determine the target seat and the reference seat according to the direction of the vehicle collision, wherein the target seat is closer to the side of the vehicle that is being collided with than the reference seat; to determine the first excitation time adjustment value according to the actual distance between two adjacent seats, wherein the first excitation time adjustment value is positively correlated with the aforementioned distance; and to determine the adjusted excitation time of the target seat according to the preset excitation time of the target seat and the first excitation time adjustment value.

[0083] The activation module 203 is used to activate the side protection airbag of the target seat according to the activation time after the target seat is adjusted.

[0084] In this embodiment, the activation module 203 is also used to activate the lateral protective airbag of the reference seat according to the activation time after the adjustment of the reference seat.

[0085] like Figures 3-7 As shown, this application also provides a vehicle seat system for implementing the vehicle side impact airbag control method described above. The seat system includes a seat 40 and an adjustment assembly. There are at least two seats 40, arranged sequentially along the width direction of the vehicle. At least one seat 40 is disposed on the adjustment assembly, which is used to adjust the actual distance between the two seats 40 along the width direction of the vehicle. Along the width direction of the vehicle, each seat 40 has a side protection airbag provided on its side closest to the adjacent seat 40. Figure 6 As shown, the side airbags of seat 40 are used to inflate and extend forward of seat 40, and the inflated airbags 324 protect the occupants in the width direction of the vehicle. In this embodiment, side airbags are provided on both sides of seat 40 to improve the protection effect for the occupants.

[0086] In this embodiment, the lateral airbag is located on the upper half of the seat back. The lateral airbag is relatively small, making it suitable for confined spaces within the seat. In two adjacent seats, lateral airbags are provided on both adjacent sides of the other seat; that is, the lateral airbags are arranged in pairs to enhance occupant protection.

[0087] In some embodiments, the adjustment component can be a slide rail. In this embodiment, the adjustment component is a slide rail 41, and the seat 40 is disposed on the slide rail 41, sliding along the width direction of the vehicle via the slide rail 41. In this embodiment, the adjustment component includes two slide rails 41, which are parallel to each other and both are disposed along the width direction of the vehicle. The seat 40 is disposed on both slide rails 40 simultaneously, improving the stability of the seat 40.

[0088] In this embodiment, two adjacent seats 40 along the width direction of the vehicle are both mounted on the adjustment assembly, and the two seats 40 can be adjusted independently, which helps to improve the adjustment flexibility of the seats 40.

[0089] like Figures 3-6 As shown, in one embodiment of this application, the seat has a frame 310, and the lateral protection airbag includes an air bag and an inflation unit 320 connected to the air bag. The air bag 325 before folding is as follows: Figure 5 As shown, the pull strap 323 is connected to the air bag.

[0090] After the airbag is folded and installed onto the frame 310 of the seat 40, the airbag includes a first portion 321 located on the side of the frame 310 and a second portion 322 located on the rear side of the frame 310. The inflation unit 320 is located on the rear side of the frame 310 and is arranged along the width direction of the vehicle. The inflation unit 320 is separately arranged from the airbag, and the inflation unit 320 is arranged along the width direction of the vehicle, effectively saving space in the width direction of the vehicle inside the seat. The airbag includes a first portion 321 located on the side of the frame 310 and a second portion 322 located on the rear side of the frame 310, making the deployment of the lateral protection airbag more flexible and more adaptable to the compact layout space inside the seat.

[0091] In this embodiment, the lateral protective airbag is arranged along the frame of the seat, and the pull strap 323 is located at the outer edge of the lateral protective airbag and is fixed to the side and rear of the seat respectively. The length of the pull strap 323 can be determined by simulation, limited number of experiments and other means so that the lateral protective airbag can be deployed in front of the seat.

[0092] This application also provides a vehicle including a control system for a seat airbag in a side-impact collision as described above, or a seat system as described above.

[0093] In summary, the vehicle, seat system, and seat airbag control system and method provided in this application activate the side protection airbag of the target seat according to an adjusted activation time. The adjusted activation time is determined based on a first activation time adjustment value, which in turn is determined based on the distance between two adjacent seats along the vehicle width direction. By adjusting the activation time of the target seat's side protection airbag based on the actual distance between two adjacent seats, the influence of this distance on the position and shape of the side protection airbag upon contact with the occupant after activation and inflation is reduced. This helps to make the position and shape of the side protection airbag upon actual contact with the occupant after activation and inflation closer to the design state, thereby improving the protection effect on the occupant.

[0094] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A method for controlling a vehicle seat airbag in a side collision, characterized in that, The vehicle includes at least two adjacent seats arranged along the width of the vehicle, and each of the two seats is provided with a side airbag on an adjacent side. The control method includes: Acquire vehicle collision direction and seat status information, wherein the seat status information includes at least the actual distance between the two seats; Based on the direction of the collision with the vehicle, a target seat and a reference seat are determined. Among two adjacent seats, the target seat is closer to the side of the vehicle that was hit than the reference seat. The first excitation time adjustment value is determined based on the actual distance between two adjacent seats, and the first excitation time adjustment value is positively correlated with the actual distance. The adjusted activation time of the target seat is determined based on the preset activation time of the target seat and the first activation time adjustment value. The side airbags of the target seat are activated based on the activation timing after the target seat is adjusted.

2. The method for controlling the seat airbag in a side-impact collision of a vehicle according to claim 1, characterized in that, The two seats are oriented in the same direction, and the seat status information also includes the occupant vital signs parameters of the reference seat, which are used to characterize the occupant's body type; Determining the post-adjustment excitation time of the target seat includes: Based on the occupant vital signs parameters of the reference seat, a second excitation time adjustment value is determined, wherein the second excitation time adjustment value is negatively correlated with the body shape of the occupant of the reference seat; The adjusted activation time of the target seat is determined based on the preset activation time of the target seat, the first activation time adjustment value, and the second activation time adjustment value.

3. The method for controlling the seat airbag in a side-impact collision of a vehicle according to claim 2, characterized in that, The step of determining the adjusted activation time of the target seat based on the preset activation time of the target seat, the first activation time adjustment value, and the second activation time adjustment value includes: The second trigger timing adjustment value is an advance value based on the preset trigger timing of the target seat. The larger the size of the occupant of the reference seat, the greater the advance value.

4. The method for controlling a vehicle side-impact seat airbag according to any one of claims 1 to 3, characterized in that, The backrests of two adjacent seats have an angle between them. The two adjacent seats are a front seat and a rear seat, respectively. Along the orientation of the seats, the backrest of the rear seat is further back than the backrest of the front seat. The seat status information also includes the angle. The control method further includes: The third excitation time adjustment value is determined based on the included angle between the backrests of the two seats and the mapping relationship between the included angle between the backrests of the two seats and the third excitation time adjustment value. If the rear seat is the reference seat, then the adjusted excitation time of the reference seat is determined according to the preset excitation time of the reference seat and the third excitation time adjustment value; If the rear seat is the target seat, then the adjusted activation time of the target seat is determined based on the preset activation time of the target seat, the first activation time adjustment value, and the third activation time adjustment value.

5. The method for controlling the seat airbag in a side-impact collision of a vehicle according to claim 4, characterized in that, The third triggering time adjustment value is an advance value based on the preset triggering time of the rear seat. The larger the angle between the backrest of the rear seat and the backrest of the front seat, the greater the advance value.

6. The method for controlling a vehicle side-impact seat airbag according to any one of claims 1 to 3, characterized in that, The step of determining the adjusted activation time of the target seat based on the preset activation time of the target seat and the first activation time adjustment value includes: The actual distance between two adjacent seats is compared with the preset distance. If the actual distance is greater than the preset distance, the first excitation time adjustment value is a delayed value based on the preset excitation time of the target seat. The larger the actual distance, the greater the delay of the delayed value. If the actual distance is less than the preset distance, the first excitation time adjustment value is an advance value based on the preset excitation time of the target seat. The smaller the actual distance, the greater the advance value. If the actual spacing is equal to the preset spacing, then the adjustment value of the first excitation time is 0.

7. A control system for a vehicle side-impact seat airbag, characterized in that, The vehicle includes at least two adjacent seats arranged along the width of the vehicle, and each of the two seats is provided with a side airbag on an adjacent side. The control system includes: The acquisition module is used to acquire collision direction and seat status information of the vehicle, wherein the seat status information includes at least the actual distance between the two seats. A logic module is configured to determine a target seat and a reference seat based on the collision direction of the vehicle, wherein, among two adjacent seats, the target seat is closer to the collision side of the vehicle than the reference seat; determine a first activation time adjustment value based on the actual distance between the two adjacent seats, wherein the first activation time adjustment value is positively correlated with the actual distance; and determine an adjusted activation time of the target seat based on a preset activation time of the target seat and the first activation time adjustment value; and The activation module is used to control the activation of the side protection airbags of the target seat according to the activation time after the target seat is adjusted.

8. A vehicle seating system, characterized in that, A method for controlling a seat airbag in a vehicle side collision as described in any one of claims 1 to 6, comprising: The vehicle includes at least two seats, which are arranged sequentially along the width of the vehicle. An adjustment assembly, at least one of the seats is disposed on the adjustment assembly, the adjustment assembly being used to adjust the actual distance between the two seats along the width direction of the vehicle; Along the width direction of the vehicle, each of the seats is provided with a side airbag on the side near the adjacent seat. The side airbag of the seat is used to inflate and extend forward of the seat to protect the occupant in the width direction of the vehicle.

9. The vehicle seating system according to claim 8, characterized in that, The seat has a frame, and the side protection airbag includes an air bag and an inflation unit connected to the air bag. The air bag includes a first part located on the side of the frame and a second part located on the rear side of the frame. The inflation unit is located on the rear side of the frame and is arranged along the width direction of the vehicle.

10. A vehicle, characterized in that, This includes the control system for the seat airbag in a side-impact collision of a vehicle as described in claim 7, or the seat system as described in claim 8 or 9.

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