A side airbag device for a second-row passenger of an automobile and a control method

Abstract

The application discloses a kind of automobile two-row passenger side airbag device and method, comprising: airbag, between the adjacent seats of automobile two-row seat is set;Data acquisition device is used when vehicle side collision occurs, and there is passenger on two-row seat, obtains collision information, vehicle state information and two-row passenger state information;Controller is used according to collision information, vehicle state information and two-row passenger state information, predicts the inclination direction of two-row passenger and the displacement of two-row passenger;When the displacement of two-row passenger is greater than or equal to the distance between two-row passenger and inclined side airbag, determine the time required for two-row passenger to move to the position of inclined side airbag;Only when the time required for two-row passenger to move to the position of inclined side airbag is greater than the deployment time of inclined side airbag, control inclined side airbag to deploy.Can effectively prevent airbag from colliding with two-row passenger during deployment, effectively protect the side of two-row passenger.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a side airbag device for second-row passengers of a vehicle and a control method. BACKGROUND

[0002] The statements in this section merely provide background information related to the present application and do not necessarily constitute the prior art.

[0003] In order to avoid passengers in the vehicle being thrown off the seat in the event of a severe collision, rollover or other dangerous situation, resulting in injuries to the passengers due to secondary collision, a safety airbag is usually provided in the vehicle to protect the personal safety of the passengers. When a vehicle collision accident occurs, the safety airbag is rapidly inflated and then instantly pops out and expands, providing a buffer for the passengers to reduce the harm caused to the passengers by the vehicle collision accident.

[0004] In related technologies, in order to provide protection for second-row passengers during a collision, a safety airbag is provided on the back of the front-row seat or on the back of the second-row seat. When a vehicle collision occurs, the safety airbag installed on the back of the front-row seat expands backward, or the safety airbag installed on the back of the second-row seat expands forward, providing forward or lateral protection for the second-row passengers.

[0005] However, the method of providing a safety airbag on the back of the front-row seat or on the back of the second-row seat occupies a large space, resulting in a smaller distance between the second-row seat and the front-row seat, and during the expansion of the safety airbag, if a collision occurs with the passengers, it will cause a huge impact on the passengers, thereby causing injuries to the passengers. SUMMARY

[0006] Therefore, the present application provides a side airbag device for second-row passengers of a vehicle and a control method, which can effectively prevent a collision between the safety airbag and the second-row passengers during the expansion of the safety airbag when a vehicle side collision occurs, thereby providing effective protection for the sides of the second-row passengers.

[0007] In one aspect, the present application provides a side airbag device for second-row passengers of a vehicle, comprising:

[0008] a safety airbag arranged between adjacent seats of a second-row seat of the vehicle;

[0009] a data acquisition device configured to acquire collision information, vehicle state information and second-row passenger state information when a vehicle side collision occurs and there is a passenger on the second-row seat;

[0010] The controller is configured to predict the tilt direction of the second-row occupant and the displacement of the second-row occupant according to the collision information, the vehicle state information, and the second-row occupant state information; determine the time required for the second-row occupant to move to the position of the tilt-side airbag when the displacement of the second-row occupant is greater than or equal to the distance between the second-row occupant and the tilt-side airbag; and control the tilt-side airbag to be deployed only when the time required for the second-row occupant to move to the position of the tilt-side airbag is greater than the deployment time of the tilt-side airbag.

[0011] Optionally, the airbag is connected to the side frame of the second-row seat of the vehicle; a weakening line is arranged at the fabric skin of the second-row seat of the vehicle; when the vehicle is in a safe driving state, the airbag is in a folded state and is located in the fabric skin of the second-row seat of the vehicle; and when the controller controls the airbag to be deployed, the airbag can be ejected from the weakening line and deployed.

[0012] Optionally, the airbag comprises a gas generator, an airbag bag cloth, and an airbag pull belt; the gas generator is arranged at the bottom of the airbag bag cloth, and the airbag pull belt is arranged inside the airbag bag cloth; and the gas generator is connected to the side frame of the second-row seat of the vehicle.

[0013] Optionally, the airbag pull belt comprises an upper pull belt and a lower pull belt; the upper pull belt is located at the upper part of the airbag bag cloth; and the lower pull belt is located at the lower part of the airbag bag cloth.

[0014] Optionally, the collision information obtained by the data acquisition device comprises a collision position and a collision intensity.

[0015] The vehicle state information obtained by the data acquisition device comprises a position of the vehicle, a speed of the vehicle, and an acceleration of the vehicle.

[0016] The second-row occupant state information comprises position information of the second-row seat where the occupant is located, action information of the occupant, and identity feature information of the second-row occupant.

[0017] Optionally, the controller is configured to predict the tilt direction of the second-row occupant and the displacement of the second-row occupant according to the collision information, the vehicle state information, the second-row occupant state information, and a trained vehicle collision prediction model; the vehicle collision prediction model takes the collision information, the vehicle state information, and the second-row occupant state information as inputs, takes the tilt direction of the second-row occupant and the displacement of the second-row occupant as outputs, and is constructed by using a convolutional neural network.

[0018] Optionally, the time required for the second-row occupant to move to the position of the tilt-side airbag determined by the controller is the time required for the second-row occupant closest to the tilt-side airbag to move to the position of the tilt-side airbag.

[0019] Optionally, the controller is configured to control the airbag to not deploy when there is no passenger on the second-row seat, or the displacement of the second-row passenger is less than the distance between the second-row passenger and the diagonal side airbag, or the time required for the second-row passenger to move to the position of the diagonal side airbag is less than or equal to the deployment time of the diagonal side airbag.

[0020] Optionally, the controller is configured to determine that the vehicle has a side collision after receiving a side collision signal of the vehicle.

[0021] In another aspect, the embodiments of the present application also provide a control method of a side airbag device for a second-row passenger of a vehicle, comprising:

[0022] When the vehicle has a side collision and there is a passenger on the second-row seat, obtaining collision information, vehicle state information and second-row passenger state information;

[0023] According to the collision information, the vehicle state information and the second-row passenger state information, predicting the diagonal direction of the second-row passenger and the displacement of the second-row passenger;

[0024] When the displacement of the second-row passenger is greater than or equal to the distance between the second-row passenger and the diagonal side airbag, determining the time required for the second-row passenger to move to the position of the diagonal side airbag;

[0025] Only when the time required for the second-row passenger to move to the position of the diagonal side airbag is greater than the deployment time of the diagonal side airbag, the diagonal side airbag is controlled to deploy.

[0026] The technical scheme provided by the embodiments of the present application sets the airbag between the adjacent seats of the second-row seat of the vehicle, and monitors whether there is a passenger on the second-row seat, the collision information, the vehicle state information and the second-row passenger state information after the vehicle has a side collision, and according to the monitored data, the diagonal direction of the second-row passenger and the displacement of the second-row passenger are predicted. When the displacement of the second-row passenger is greater than or equal to the distance between the second-row passenger and the diagonal side airbag, it is determined that there is a possibility of collision between the second-row passenger and the diagonal side airbag after the diagonal side airbag is deployed. For this condition, the time required for the second-row passenger to move to the position of the diagonal side airbag is determined. When the time required for the second-row passenger to move to the position of the diagonal side airbag is less than or equal to the deployment time of the diagonal side airbag, it is determined that there is a possibility of collision between the second-row passenger and the diagonal side airbag during the deployment of the airbag. At this time, in order to avoid the secondary injury to the passenger caused by the deployment of the airbag, the airbag is controlled not to deploy. When the time required for the second-row passenger to move to the position of the diagonal side airbag is greater than the deployment time of the diagonal side airbag, it is determined that there is no possibility of collision between the second-row passenger and the diagonal side airbag during the deployment of the airbag. At this time, the airbag is controlled to deploy, providing effective protection for the side of the second-row passenger. The airbag is connected with the side frame of the second-row seat of the vehicle, and does not affect the space between the front-row seat and the second-row seat. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This application provides a schematic diagram of the structure of a side airbag device for second-row occupants in a car, as shown in the embodiments of this application.

[0029] Figure 2 This application provides an isometric mounting schematic diagram of a side airbag device for second-row occupants in a car, as shown in the embodiments of this application.

[0030] Figure 3 A schematic diagram of the deployed state of a side airbag device for second-row occupants in a car, provided as an embodiment of this application;

[0031] Figure 4 This is a schematic diagram of the airbag in the deployed state of a side airbag device for second-row occupants in a car, provided as an embodiment of this application.

[0032] Reference numerals: 1. Airbag installation location; 2. Side frame of the second-row seats; 3. Airbag lining; 5. Bolt; 6. Gas generator; 7. Airbag strap.

[0033] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Unless otherwise defined, all technical terms used in the embodiments of this application have the same meaning as commonly understood by those skilled in the art.

[0036] In related technologies, in order to provide protection for second-row occupants during a collision, airbags are installed in the back of the front seats or the back of the second-row seats. When a collision occurs, the airbags installed in the back of the front seats deploy rearward, or the airbags installed in the back of the second-row seats deploy forward, providing forward or side protection for the second-row occupants.

[0037] However, installing airbags on the back of the front or second-row seats takes up a lot of space, reducing the distance between the second-row and front seats. Furthermore, if an airbag collides with an occupant during deployment, it can cause a huge impact and result in injury.

[0038] This application provides a side airbag device for second-row occupants of a car, which can prevent the airbag from colliding with the occupants during deployment when a side collision occurs, thereby providing effective side protection for second-row occupants.

[0039] To make the technical solutions and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0040] This application provides an embodiment of a side airbag device for second-row occupants in a car, comprising:

[0041] Airbags are installed between adjacent seats in the second row of a car, such as... Figure 1 The airbag installation location is shown as 1.

[0042] The data acquisition device is used to acquire collision information, vehicle status information, and second-row occupant status information when a side collision occurs and there are occupants in the second row of seats.

[0043] The controller is used to predict the tilt direction and displacement of the second-row occupants based on collision information, vehicle status information, and second-row occupant status information; when the displacement of the second-row occupants is greater than or equal to the distance between the second-row occupants and the tilt side airbag, it determines the time required for the second-row occupants to move to the position of the tilt side airbag; and only when the time required for the second-row occupants to move to the position of the tilt side airbag is greater than the deployment time of the tilt side airbag, it controls the deployment of the tilt side airbag.

[0044] like Figure 1 , Figure 2 As shown, in this embodiment, the airbag is connected to the side frame 2 of the second-row seats; a weakening line is provided on the fabric upholstery of the second-row seats; as shown... Figure 3 As shown, when the vehicle is in a safe driving state, the airbag is in a folded state and located within the fabric upholstery of the second-row seats; when the controller controls the airbag to deploy, the airbag can eject and deploy from the weakening lines, as...Figure 2 As shown.

[0045] The embodiment of the application installs the airbag at the backrest crossbeam of the second-row seat, does not affect the man-machine arrangement of the passenger compartment, and meets the stability and supportability of the airbag cloth 3 in high-speed deployment. In addition, in the normal deployment process of the airbag cloth 3, vertical deployment in the vertical direction can be realized through the design of the airbag bag type, so as to effectively protect the second-row passengers after the airbag is deployed, and better buffer the collision between the passengers. When the vehicle is subjected to side impact, the airbag is rapidly ignited and deployed after receiving the ECU ignition signal, so as to effectively protect the head and chest of the second-row passengers. Meanwhile, the structure of the embodiment of the application is relatively simple, and is worthy of wide promotion.

[0046] As Figure 3 , Figure 4 shown, the airbag includes a gas generator 6, an airbag cloth 3, and an airbag pull belt 7; the gas generator 6 is arranged at the bottom of the airbag cloth 3, and the airbag pull belt 7 is arranged inside the airbag cloth 3; the gas generator 6 is connected with the side frame 2 of the second-row seat of the vehicle, and the gas generator 6 is used to inflate the airbag cloth 3, so that the airbag cloth 3 is ejected and deployed from the weakened line of the fabric skin, and the airbag cloth 3 is divided into upper and lower parts after being deployed, and the volume of the upper part is smaller than that of the lower part; and the airbag cloth 3 is located between the two adjacent seats of the second-row seat after being deployed, and the upper part of the airbag cloth 3 effectively protects and buffers the head of the second-row passenger when the vehicle is subjected to side impact, and the lower part of the airbag cloth 3 effectively protects and buffers the chest of the second-row passenger and absorbs part of the collision energy, thereby providing effective side protection for the second-row passenger.

[0047] The airbag pull belt 7 of the embodiment of the application includes an upper pull belt and a lower pull belt; the upper pull belt is located at the upper part of the airbag cloth and is in a semicircular shape; and the lower pull belt is located at the lower part of the airbag cloth and is in an elliptical shape.

[0048] The inner part of the upper pull belt and the lower pull belt of the embodiment of the application is sewn with a surface cloth.

[0049] As Figure 3 shown, the embodiment of the application is provided with a bolt 5 on the gas generator 6, and the bolt 5 is connected with the side frame 2 of the second-row seat of the vehicle.

[0050] In order to prevent the airbag from colliding with the passenger during the deployment process and forming an impact on the passenger to cause injury to the passenger, the embodiment of the application is further provided with a data acquisition device and a controller; the airbag and the data acquisition device are in communication connection with the controller.

[0051] The data acquisition device is used to acquire collision information, vehicle state information, and second-row passenger state information when the vehicle is subjected to side impact and there is a passenger on the second-row seat.

[0052] The collision information obtained by the data acquisition device in the embodiment of the application comprises a collision position and a collision intensity;

[0053] The vehicle state information obtained by the data acquisition device comprises a position of the vehicle, a speed of the vehicle and an acceleration of the vehicle;

[0054] The second-row passenger state information comprises position information of a seat in the second row where the passenger is located, action information of the passenger and identity feature information of the passenger in the second row, wherein the position information of the seat in the second row where the passenger is located comprises a distance between the passenger and two adjacent airbags on the side of a side collision of the vehicle.

[0055] The second-row passenger state information can be obtained by collecting images of the seat in the second row and the passenger and then analyzing the images.

[0056] The controller is configured to predict a tilting direction of the passenger in the second row and a displacement of the passenger in the second row according to the collision information, the vehicle state information and the second-row passenger state information, determine a time required for the passenger in the second row to move to a position of the airbag on the tilting side when the displacement of the passenger in the second row is greater than or equal to the distance between the passenger in the second row and the airbag on the tilting side, and control the airbag on the tilting side to be deployed only when the time required for the passenger in the second row to move to the position of the airbag on the tilting side is greater than a deployment time of the airbag on the tilting side.

[0057] By predicting the tilting direction of the second-row passenger and the displacement of the second-row passenger, it is determined whether the second-row passenger is likely to collide with the side airbag; according to the displacement of the second-row passenger, it is determined whether the side airbag is likely to collide with the passenger, specifically, when the displacement of the second-row passenger is greater than or equal to the distance between the second-row passenger and the side airbag, it indicates that the passenger is likely to collide with the side airbag, and when the displacement of the second-row passenger is less than the distance between the second-row passenger and the side airbag, it indicates that the second-row passenger will not move to the side airbag, so there will be no collision with the side airbag; after determining that the passenger is likely to collide with the side airbag, further, by the time required for the second-row passenger to move to the position of the side airbag, it is determined when the passenger collides with the side airbag, when the time required for the second-row passenger to move to the position of the side airbag is greater than the deployment time of the side airbag, it indicates that when the passenger collides with the side airbag, the side airbag has been completely deployed, at this time the collision will provide a buffer for the lateral movement of the passenger and will provide effective protection for the side of the passenger, and when the time required for the second-row passenger to move to the position of the side airbag is less than or equal to the deployment time of the side airbag, it indicates that when the passenger collides with the side airbag, the side airbag is in the process of being deployed, in this case, if the side airbag is controlled to be deployed, it will cause impact to the second-row passenger, increasing the risk of injury to the passenger, therefore, the controller of the embodiment only controls the side airbag to be deployed when the time required for the second-row passenger to move to the position of the side airbag is greater than the deployment time of the side airbag.

[0058] The controller of the embodiment is configured to predict the tilting direction of the second-row passenger and the displacement of the second-row passenger according to the collision information, the vehicle state information, the second-row passenger state information, and a trained vehicle collision prediction model; the vehicle collision prediction model takes the collision information, the vehicle state information, and the second-row passenger state information as input, takes the tilting direction of the second-row passenger and the displacement of the second-row passenger as output, and is constructed by using a convolutional neural network.

[0059] The controller of the embodiment is configured to determine the time required for the second-row passenger to move to the position of the side airbag according to the collision information, the vehicle state information, the second-row passenger state information, the distance between the second-row passenger and the side airbag, the tilting direction of the second-row passenger, the displacement of the second-row passenger, and a trained passenger moving time prediction model; the passenger moving time prediction model takes the collision information, the vehicle state information, the second-row passenger state information, the distance between the second-row passenger and the side airbag, the tilting direction of the second-row passenger, and the displacement of the second-row passenger as input, takes the time required for the second-row passenger to move to the position of the side airbag as output, and is constructed by using a convolutional neural network.

[0060] The controller of the embodiment of the application determines the time required for the second-row passenger to move to the position of the oblique side airbag as the time required for the second-row passenger closest to the oblique side airbag to move to the position of the oblique side airbag, so that the airbag is prevented from colliding with any part of the passenger during the airbag deployment, and the passenger is further prevented from being injured by the impact force during the airbag deployment.

[0061] The embodiment of the application also limits the controller to not control the airbag to be deployed when there is no passenger on the second-row seat, or the displacement of the second-row passenger is less than the distance between the second-row passenger and the oblique side airbag, or the time required for the second-row passenger to move to the position of the oblique side airbag is less than or equal to the deployment time of the oblique side airbag.

[0062] When the displacement of the second-row passenger is less than the distance between the second-row passenger and the oblique side airbag, it indicates that the displacement of the second-row passenger is small and the second-row passenger will not move to contact the oblique side airbag, so the airbag does not need to be deployed; when the time required for the second-row passenger to move to the position of the oblique side airbag is less than or equal to the deployment time of the oblique side airbag, it indicates that the oblique side airbag will collide with the passenger during the deployment of the oblique side airbag, so in order to prevent the impact force during the airbag deployment from causing damage to the passenger, the airbag is not controlled to be deployed.

[0063] The controller in the embodiment of the application is used to determine that the vehicle has a side collision after receiving a side collision signal of the vehicle.

[0064] The embodiment of the application obtains the side collision signal of the vehicle by installing a collision sensor on the side of the vehicle, and the collision sensor is used to detect the collision strength when the vehicle has a side collision, and when the detected collision strength is greater than a set strength threshold, a side collision signal is generated and sent to the controller.

[0065] The embodiment of the application determines whether there is a passenger on the second-row seat by installing a pressure sensor on the second-row seat.

[0066] The technical scheme provided by the embodiment of the application is characterized in that a safety air bag is arranged between the adjacent seats of the second-row seats of the vehicle, and after the vehicle is subjected to a side collision, whether there is an occupant on the second-row seats, collision information, vehicle state information and second-row occupant state information are monitored, and the inclination direction of the second-row occupant and the displacement of the second-row occupant are predicted according to the monitored data; when the displacement of the second-row occupant is greater than or equal to the distance between the second-row occupant and the inclined side safety air bag, it is determined that there is a possibility of collision between the second-row occupant and the inclined side safety air bag after the inclined side safety air bag is deployed, for this condition, the time required for the second-row occupant to move to the position of the inclined side safety air bag is determined; when the time required for the second-row occupant to move to the position of the inclined side safety air bag is less than or equal to the deployment time of the inclined side safety air bag, it is determined that there is a possibility of collision between the second-row occupant and the inclined side safety air bag during the deployment of the inclined side safety air bag, at this time, in order to avoid secondary injury to the occupant caused by the deployment of the air bag, the air bag is controlled not to be deployed; when the time required for the second-row occupant to move to the position of the inclined side safety air bag is greater than the deployment time of the inclined side safety air bag, it is determined that there is no possibility of collision between the second-row occupant and the inclined side safety air bag during the deployment of the inclined side safety air bag, at this time, the air bag is controlled to be deployed, thereby providing effective protection for the side of the second-row occupant; and the safety air bag is connected with the side frame of the second-row seats of the vehicle, and does not affect the space between the front-row seats and the second-row seats.

[0067] The embodiment of the application further provides a control method of a side safety air bag device for a second-row occupant of a vehicle, comprising the following steps.

[0068] When the vehicle is subjected to a side collision and there is an occupant on the second-row seats, collision information, vehicle state information and second-row occupant state information are acquired;

[0069] According to the collision information, the vehicle state information and the second-row occupant state information, the inclination direction of the second-row occupant and the displacement of the second-row occupant are predicted;

[0070] When the displacement of the second-row occupant is greater than or equal to the distance between the second-row occupant and the inclined side safety air bag, the time required for the second-row occupant to move to the position of the inclined side safety air bag is determined;

[0071] Only when the time required for the second-row occupant to move to the position of the inclined side safety air bag is greater than the deployment time of the inclined side safety air bag, the inclined side safety air bag is controlled to be deployed.

[0072] The above describes the specific embodiments of the application in combination with the drawings, but is not a limitation on the protection scope of the application, and those skilled in the art should understand that various modifications or changes made by those skilled in the art on the basis of the technical scheme of the application without creative labor are still within the protection scope of the application.

Claims

1. A side airbag device for second-row occupants in a car, characterized in that, include: Airbags are installed between adjacent seats in the second row of a car; The airbag is connected to the side frame of the second-row seats; a weakening line is set on the fabric upholstery of the second-row seats; when the vehicle is in a safe driving state, the airbag is in a folded state and is located inside the fabric upholstery of the second-row seats. When the controller controls the airbag to deploy, the airbag can pop out from the weakened line and deploy; The data acquisition device is used to acquire collision information, vehicle status information, and second-row occupant status information when a side collision occurs and there are occupants in the second row of seats. The collision information acquired by the data acquisition device includes the collision location and collision intensity; The vehicle status information acquired by the data acquisition device includes the vehicle's location, speed, and acceleration; Second-row passenger status information includes the passenger's position information in the second-row seat, the passenger's action information, and the second-row passenger's identity information; The controller is used to predict the tilt direction and displacement of the second-row occupants based on collision information, vehicle status information, and second-row occupant status information; when the displacement of the second-row occupants is greater than or equal to the distance between the second-row occupants and the tilt side airbag, it determines the time required for the second-row occupants to move to the position of the tilt side airbag; and only when the time required for the second-row occupants to move to the position of the tilt side airbag is greater than the deployment time of the tilt side airbag, it controls the deployment of the tilt side airbag. The controller is used to predict the tilt direction and displacement of the second-row occupants based on collision information, vehicle state information, second-row occupant state information, and a trained vehicle collision prediction model. The vehicle collision prediction model takes collision information, vehicle state information, and second-row occupant state information as inputs and the tilt direction and displacement of the second-row occupants as outputs, and is constructed using a convolutional neural network.

2. An airbag device for a vehicle according to claim 1, wherein An airbag includes a gas generator, an airbag cover, and an airbag strap; the gas generator is located at the bottom of the airbag cover, and the airbag strap is located inside the airbag cover; the gas generator is connected to the side frame of the second-row seats of the car.

3. An airbag device for a vehicle according to claim 2, wherein The airbag strap includes an upper strap and a lower strap; the upper strap is located at the top of the airbag fabric; the lower strap is located at the bottom of the airbag fabric.

4. The side airbag device for a two-row seat passenger of a vehicle according to claim 1, wherein The time required for the second-row occupants to move to the position of the tilt-side airbag, as determined by the controller, is the time required for the second-row occupants to move from the position closest to the tilt-side airbag to the position of the tilt-side airbag.

5. The side airbag device for a two-row seat passenger of a vehicle according to claim 1, wherein The controller is used to prevent the airbag from deploying when there are no occupants in the second row, or when the displacement of the second row occupants is less than the distance between the second row occupants and the tilt side airbag, or when the time required for the second row occupants to move to the tilt side airbag position is less than or equal to the deployment time of the tilt side airbag.

6. The side airbag device for a two-row seat passenger of a vehicle according to claim 1, wherein The controller is used to determine that a side collision has occurred after receiving a side collision signal from the vehicle.

7. A control method of a side airbag device for a two-row seat of an automobile according to any one of claims 1 to 6, characterized in that, include: When a side collision occurs and there are occupants in the second row of seats, obtain collision information, vehicle status information, and second row occupant status information. Based on collision information, vehicle status information, and second-row occupant status information, predict the tilt direction and displacement of the second-row occupants. determining a time required for the second-row occupant to move to the position of the diagonal side airbag when the displacement of the second-row occupant is equal to or greater than the distance between the second-row occupant and the diagonal side airbag; controlling the diagonal side airbag to deploy only when the time required for the second-row occupant to move to the position of the diagonal side airbag is greater than the deployment time of the diagonal side airbag.

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