Vehicle seat and control method thereof

Abstract

The application discloses a vehicle seat and a control method thereof. The vehicle seat comprises a supporting surface for supporting a driver or a passenger and an air bag arranged on the supporting surface. The air bag supports the driver or the passenger. The vehicle seat further comprises a regulating mechanism for regulating inflation and deflation of the air bag. The air bag comprises a containing cavity and a bag body for forming the containing cavity. The bag body comprises an inner layer and an outer layer. The vehicle seat further comprises a plurality of strain gauges arranged between the inner layer and the outer layer. The plurality of strain gauges are arranged at intervals along a preset direction to obtain a deformation amount of the air bag. The regulating mechanism controls inflation and deflation of the air bag according to the deformation amount. The application provides a vehicle seat and a control method thereof, so as to solve the technical problem that the air bag of the vehicle seat cannot be adjusted in real time according to the condition of the driver or the passenger, thereby causing poor supporting capacity of the air bag for the driver or the passenger.

Description

Technical Field

[0001] This application belongs to the field of vehicle technology, specifically relating to a vehicle seat and its control method. Background Technology

[0002] The vehicle is equipped with seats for passengers, and the seats have airbags that support the body parts of the passengers. The airbags support the body parts of the passengers to improve their comfort. However, the force exerted on the airbags varies depending on the weight of the passengers. When the passengers are heavier, the force on the airbags increases, causing the airbags to deform more. This deformation affects the posture of the passengers and thus impacts their riding experience.

[0003] Furthermore, when passengers travel on bumpy roads, the vehicle's undulations cause continuous impact on the airbag, leading to further deformation and affecting its support effectiveness. One existing technology uses a pressure sensor inside the airbag to detect pressure changes and adjusts the airbag's support capacity in real time to provide stable support for passengers. However, by the time the pressure sensor detects a pressure change, airbag deformation has already occurred. Especially in scenarios with rapid load changes (such as sudden braking), the pressure sensor's signal transmission can be delayed, preventing timely airbag adjustments. Additionally, environmental pressure changes, such as altitude, and the internal airbag pressure is also affected by temperature. For example, as altitude increases and air pressure decreases during vehicle travel, the internal airbag pressure will exceed the ambient pressure, causing the pressure sensor to detect over-inflation and triggering accidental airbag deflator. This reduces the airbag's volume, decreases its support capacity, and ultimately affects its support effectiveness for passengers. Summary of the Invention

[0004] This application provides a vehicle seat and its control method to solve the technical problem that the airbags of the vehicle seat cannot be adjusted in real time according to the condition of the driver and passengers, resulting in poor support for the driver and passengers.

[0005] The primary objective of this application is to provide a vehicle seat, and the technical solution adopted is as follows: A vehicle seat includes a support surface for supporting a driver and passenger and an airbag disposed on the support surface. The airbag supports the driver and passenger. The vehicle seat also includes a control mechanism for inflating and deflating the airbag. The airbag includes a receiving cavity and a bladder body forming the receiving cavity. The bladder body includes an inner layer and an outer layer. The vehicle seat also includes a plurality of strain gauges disposed between the inner layer and the outer layer. The plurality of strain gauges are spaced apart along a preset direction to obtain the deformation amount of the airbag. The control mechanism controls the inflation and deflation of the airbag according to the deformation amount.

[0006] The vehicle seat in the first objective of this application also includes the following additional technical features: The strain gauge includes a main strain gauge and an auxiliary strain gauge set at an angle to the main strain gauge, with the main strain gauge extending along a preset direction.

[0007] The strain gauge also includes a base for fixing the main strain gauge and auxiliary strain gauges. The base is provided with an isolation cavity, and a compensating strain gauge for collecting temperature information is provided in the isolation cavity. One end of the compensating strain gauge is fixedly connected to the base, and the other end is suspended in the isolation cavity.

[0008] The vehicle seat is equipped with multiple airbags, including a first airbag for supporting the neck of the driver and passenger, a second airbag for supporting the waist of the driver and passenger, a third airbag for supporting the legs of the driver and passenger, and side airbags located between the first airbag and the second airbag. The control mechanism is connected to the multiple airbags through multiple independent air passages.

[0009] The seat has multiple connecting holes that connect to independent air passages. The airbag has a connector that plugs into the connecting holes, and the connector has a connecting hole that connects to the receiving cavity.

[0010] A second objective of this application is to provide a control method for a vehicle seat, utilizing the vehicle seat described in the first objective of this application. The control method includes... Obtain the deformation amount; The adjustment information for the airbag is determined based on the deformation amount and the standard value; The control agency adjusts the airbags based on the adjustment information.

[0011] The control method in the second objective of this application also includes the following technical features: Obtaining the deformation includes: Obtain the deformation values ​​of multiple strain gauges; Multiple deformation values ​​are classified according to their deformation values ​​and set ranges; The deformation amount is obtained based on the deformation value at different levels.

[0012] The adjustment information for the airbag, determined based on the deformation and standard value, includes: Calculate the difference between the deformation and the standard value; The adjustment information should include at least the inflation volume and deflation volume; Calculate the inflation or deflation volume based on the difference.

[0013] The calculation of inflation or deflation volume based on the difference includes: Obtain the effective deformable area of ​​the airbag; Obtain the stiffness coefficient of the airbag; If the adjustment information is the inflation volume, the inflation volume is calculated based on the effective deformation area, stiffness coefficient, and difference. If the adjustment information is the venting volume, obtain the venting efficiency coefficient, and calculate the venting volume based on the venting efficiency coefficient, effective deformation area, stiffness coefficient, and difference.

[0014] The adjustment information also includes rate information; The difference is compared with a first threshold and a second threshold, and the first threshold is greater than the second threshold. If the difference is greater than or equal to the first threshold, the rate information is the first rate; If the difference is greater than the second threshold and less than the first threshold, the rate information is the second rate. If the difference is less than or equal to the second threshold, the rate information is the third rate; The first speed is greater than the second speed, and the second speed is greater than the third speed.

[0015] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows: 1. This application utilizes multiple strain gauges, positioned between the inner and outer layers, to directly measure the airbag's deformation. Multiple strain gauges improve the timeliness and accuracy of airbag status feedback. Simultaneously, the strain gauges can promptly detect airbag deformation, allowing the control mechanism to adjust the airbag accordingly and ensure effective support for occupants. Furthermore, placing the strain gauges between the inner and outer layers protects them from the impact of high-pressure gas during airbag inflation, extending their lifespan and preventing errors caused by high-pressure gas impact, thus ensuring accurate deformation measurement. The outer layer protects the strain gauges from direct contact with occupants or vehicle interior components, further preventing damage.

[0016] 2. As a preferred embodiment of this application, by setting a main strain gauge and an auxiliary strain gauge set at an angle to the main strain gauge, the main strain gauge extends along a preset direction and can directly measure the normal strain in that direction. The auxiliary strain gauge is at a certain angle to the main strain gauge and can capture the strain components in other directions, thereby obtaining the complete deformation of the airbag and avoiding the limitation of single-direction measurement.

[0017] 3. As a preferred embodiment of this application, by setting an isolation cavity, the installation areas of the compensation strain gauge and the main strain gauge and auxiliary strain gauge are physically separated, thereby reducing the impact of airbag deformation on the compensation strain gauge, improving the accuracy of temperature information obtained by the compensation strain gauge, and compensating for temperature errors in rapid temperature change scenarios through temperature information, thereby improving the accuracy of obtaining airbag deformation.

[0018] 4. As a preferred embodiment of this application, by setting up a first airbag, a second airbag, a third airbag, and side airbags, multi-part support for the occupants is achieved, improving the airbag support effect. Simultaneously, by setting up a control mechanism that connects multiple airbags through multiple independent air passages, independent and precise control of each airbag is achieved. This allows for rapid and accurate control of the inflation and deflation of the corresponding airbags based on deformation, enabling timely adjustment of the airbags and improving their support effect.

[0019] 5. As a preferred embodiment of this application, by providing a connecting hole and a connector on the airbag, the airbag can be quickly installed and removed by the insertion and cooperation of the connector and the connecting hole, thus optimizing the installation and removal process of the airbag.

[0020] 6. This application uses deformation data to reflect pressure changes caused by the contact between the occupants' bodies and the airbag, as well as dynamic stress conditions during vehicle movement, based on the obtained deformation data. By comparing and analyzing the deformation data with standard values, the required adjustment information for the airbag is determined. The control mechanism adjusts the airbag according to this information, thereby achieving dynamic optimization of the airbag support state to ensure passenger comfort and enabling precise airbag adjustment to ensure accuracy.

[0021] Furthermore, by acquiring deformation values ​​from multiple strain gauges, strain information of the airbag is captured from multiple dimensions, avoiding data deviations caused by local anomalies in a single strain gauge. Classifying multiple deformation values ​​according to their comparison with set values ​​allows for data filtering and categorization, eliminating obviously abnormal or invalid data and ensuring data validity. Calculating deformation based on different levels of deformation values ​​allows for further mining of data characteristics, enabling precise analysis of different strain conditions and improving the reliability and accuracy of deformation acquisition. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a front view of a vehicle seat according to a preferred embodiment of this application; Figure 2 This is a side view of a vehicle seat according to a preferred embodiment of this application; Figure 3 This is a schematic diagram of the airbag structure according to a preferred embodiment of this application; Figure 4 for Figure 3 A cross-sectional view along the AA direction; Figure 5 This is a front view of a strain gauge according to a preferred embodiment of this application; Figure 6 This is a top view of a strain gauge according to a preferred embodiment of this application; Figure 7 This is a flowchart illustrating the control method for the vehicle seat in this application.

[0023] Figure label: 1. Supporting surface; 2. Airbag; 21. Airbag body; 211. Inner layer; 212. Outer layer; 22. First airbag; 23. Second airbag; 24. Third airbag; 25. Side airbag; 26. Connector; 261. Connecting hole; 3. Regulatory agencies; 4. Strain gauge; 41. Main strain gauge; 42. Auxiliary strain gauge; 43. Base; 44. Isolation cavity; 45. Compensating strain gauge; 5. Route; 6. Connect the plug. Detailed Implementation

[0024] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0026] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0028] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a vehicle seat includes a support surface 1 for supporting a driver and passenger and an airbag 2 disposed on the support surface 1. The airbag 2 supports the driver and passenger. The vehicle seat also includes a control mechanism 3 for inflating and deflating the airbag 2. The airbag 2 includes a receiving cavity and a bladder body 21 forming the receiving cavity. The bladder body 21 includes an inner layer 211 and an outer layer 212. The vehicle seat also includes a plurality of strain gauges 4 disposed between the inner layer 211 and the outer layer 212. The plurality of strain gauges 4 are spaced apart along a preset direction to obtain the deformation amount of the airbag 2. The control mechanism 3 controls the inflation and deflation of the airbag 2 according to the deformation amount.

[0030] This application utilizes multiple strain gauges 4 positioned between the inner layer 211 and the outer layer 212. These strain gauges 4 directly measure the deformation of the airbag 2. The multiple strain gauges 4 improve the timeliness and accuracy of feedback on the airbag 2's status. Simultaneously, the strain gauges 4 can promptly measure the deformation of the airbag 2 when it deforms, allowing the control mechanism 3 to control the airbag 2 in a timely manner based on the deformation, ensuring the airbag 2's support effect for the occupants. Furthermore, positioning the strain gauges 4 between the inner layer 211 and the outer layer 212 protects them from the impact of high-pressure gas during airbag inflation, extending their service life and preventing errors caused by high-pressure gas impact, thus ensuring the accuracy of deformation measurement. The outer layer 212 protects the strain gauges 4 from direct contact with occupants or vehicle interior components, further preventing damage to the strain gauges 4.

[0031] As a preferred embodiment of this application: (e.g.) Figure 4 , Figure 5As shown, the strain gauge 4 includes a main strain gauge 41 and an auxiliary strain gauge 42 arranged at an angle to the main strain gauge 41. The main strain gauge 41 extends along a preset direction. Further, the airbag 2 is fixed to the seat. The airbag 2 includes a contact surface that abuts against the seat and a support surface 1 for supporting the occupants. Multiple strain gauges 4 are arranged on the support surface 1. Preferably, the strain gauges 4 are connected to the control mechanism 3 via wiring 5. The inner layer 211 has a guide hole (not shown) on the side facing the outer layer 212 to accommodate the wiring 5. The wiring 5 extends around the outline of the airbag 2 and connects to a connector 6 provided on the contact surface. By setting the main strain gauge 41 and the auxiliary strain gauge 42 arranged at an angle to the main strain gauge 41, the main strain gauge 41 extends along a preset direction, allowing direct measurement of the normal strain in that direction. The auxiliary strain gauge 42 is at a certain angle to the main strain gauge 41, enabling the capture of strain components in other directions, thereby obtaining the complete deformation of the airbag 2 and avoiding the limitations of single-direction measurement.

[0032] Preferably, there are two auxiliary strain gauges 42. The angle between the auxiliary strain gauge 42 and the main strain gauge 41 is not limited in this application and can be 30°, 45° or 90°.

[0033] As a preferred embodiment of the implementation method, the following is an example: Figure 5 , Figure 6 As shown, the strain gauge 4 also includes a base 43 for fixing the main strain gauge 41 and the auxiliary strain gauge 42. The base 43 has an isolation cavity 44, and a compensation strain gauge 45 for collecting temperature information is installed inside the isolation cavity 44. One end of the compensation strain gauge 45 is fixedly connected to the base 43, and the other end is suspended in the isolation cavity 44. Furthermore, the base 43 is elastically configured. As those skilled in the art will understand, all strain gauges 4 are made of elastic material. By setting the isolation cavity 44 to physically separate the installation areas of the compensation strain gauge 45 from those of the main strain gauge 41 and the auxiliary strain gauge 42, the influence of the deformation of the airbag 2 on the compensation strain gauge 45 is reduced, the accuracy of the temperature information obtained by the compensation strain gauge 45 is improved, and the temperature error in the rapid temperature change scenario is compensated by the temperature information, thereby improving the accuracy of obtaining the deformation of the airbag 2.

[0034] As a preferred embodiment of this application: (e.g.) Figure 1 , Figure 2As shown, the vehicle seat is equipped with multiple airbags 2. These airbags 2 include a first airbag 22 for supporting the neck of the occupant, a second airbag 23 for supporting the occupant's waist, a third airbag 24 for supporting the occupant's legs, and side airbags 25 positioned between the first airbag 22 and the second airbag 23. The control mechanism 3 connects to the multiple airbags 2 via multiple independent air passages (not shown in the figures). Those skilled in the art will understand that the multiple airbags 2 may also include other airbags 2 supporting different parts of the occupant's body; this application does not limit this. By providing the first airbag 22, second airbag 23, third airbag 24, and side airbags 25, multi-part support for the occupant is achieved, improving the support effect of the airbags 2. Meanwhile, by setting up a control mechanism 3 to connect multiple airbags 2 through multiple independent air passages, the control mechanism 3 can actively inflate and deflate or control the inflation mechanism to inflate and deflate. This application does not limit this, so as to achieve independent and precise control of multiple airbags 2, thereby quickly and accurately controlling the inflation and deflation of the corresponding airbags 2 according to the deformation amount, so as to adjust the airbags 2 in a timely manner and improve the support effect of the airbags 2.

[0035] The preset direction is explained using the arrangement of airbag 2 in Embodiment 2. In this application, the first airbag 22, the second airbag 23 and the third airbag 24 are arranged laterally, and the side airbag 25 is arranged vertically. Therefore, the preset direction in the first airbag 22, the second airbag 23 and the third airbag 24 is laterally, and the preset direction in the side airbag 25 is vertical. The preset direction is the main deformation direction of the airbag 2 after being subjected to force.

[0036] In the second embodiment, the configuration of the control mechanism 3 and the airbag 2 can be any one of the following embodiments: Example 2: As Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the seat has multiple connecting holes (not shown in the attached diagram) that connect to independent air passages. The airbag 2 has a connector 26 that plugs into the connecting holes, and the connector 26 has a connecting hole 261 that communicates with the receiving cavity. Furthermore, the seat also has fasteners (not shown in the attached diagram) and seals (not shown in the attached diagram). The seals are located in the connecting holes, and the fasteners are used to tightly connect the connector 26 and the seals to the connecting holes 261. By providing connecting holes and connectors 26 on the airbag 2, and through the plugging and connecting of the connectors 26 with the connecting holes, the airbag 2 can be quickly installed and removed, optimizing the installation and removal process of the airbag 2.

[0037] Example 3: This example 3 is not illustrated. The airbag is detachably installed on the seat. The airbag has an air inlet. The control mechanism has a vent pipe connected to the air inlet. The vent pipe is hidden in the seat.

[0038] like Figure 7As shown, this application also provides a vehicle seat control method, applied to the vehicle seat disclosed in this application, the control method including: Obtain the deformation amount; The adjustment information for the airbag is determined based on the deformation amount and the standard value; The control agency adjusts the airbags based on the adjustment information.

[0039] In the control method of this application, the standard value is the optimal support deformation of the airbag. The standard value is determined by establishing a mechanical model, applying different loads (e.g., 50kg to 100kg) to the airbag, measuring the deformation in a stable state after inflation, plotting a load-deformation curve, and finding the deformation corresponding to the midpoint of the linear segment as the standard value. The obtained deformation reflects the pressure changes caused by the contact between the occupant's body and the airbag, the dynamic force situation during seating posture adjustments, or vehicle movement. By comparing and analyzing the deformation with the standard value, the required adjustment information for the airbag is determined. The control mechanism adjusts the airbag according to this information, achieving dynamic optimization of the airbag support state to ensure passenger comfort, and enabling precise airbag adjustment to ensure accuracy.

[0040] As a preferred embodiment of this application, obtaining the deformation includes: Obtain the deformation values ​​of multiple strain gauges; Multiple deformation values ​​are classified according to their deformation values ​​and set ranges; The deformation amount is obtained based on the deformation value at different levels.

[0041] Establishing the set range includes: obtaining the maximum deformation of the airbag; establishing a deformation range based on the maximum deformation; and dividing the deformation range into multiple set ranges, each including at least a slight deformation range, a moderate deformation range, and a medium deformation range. Taking the maximum deformation of the airbag as 'a' as an example, the deformation range is... Set the interval as , , , where the set interval For the range of slight deformation, set the range. For the moderate deformation range, set the range. For the severe deformation range, the deformation values ​​are divided into different set intervals for grading. The deformation amount is obtained by weighting and summing the deformation values ​​of different levels. Those skilled in the art will understand that the multiple set intervals can be further subdivided, such as including a slight deformation range, a moderate deformation range, and a severe deformation range, to increase the accuracy of deformation amount acquisition; this application does not limit this. By acquiring the deformation values ​​of multiple strain gauges, the strain information of the airbag is captured from multiple dimensions, avoiding data deviations caused by local anomalies in a single strain gauge. Grading multiple deformation values ​​according to the deformation values ​​and set values ​​allows for data filtering and classification, eliminating obviously abnormal or invalid data and ensuring data validity. Calculating the deformation amount based on different levels of deformation values ​​allows for further mining of data characteristics, enabling precise analysis of different degrees of strain, and improving the reliability and accuracy of deformation amount acquisition.

[0042] As a preferred embodiment 4 under implementation method 3, determining the airbag adjustment information based on the deformation amount and the standard value includes: Calculate the difference between the deformation and the standard value; The adjustment information should include at least the inflation volume and deflation volume; Calculate the inflation or deflation volume based on the difference.

[0043] As a preferred specific example 1 under Example 4: Calculating the inflation or deflation volume based on the difference includes: Obtain the effective deformable area of ​​the airbag; Obtain the stiffness coefficient of the airbag; If the adjustment information is the inflation volume, the inflation volume is calculated based on the effective deformation area, stiffness coefficient, and difference. If the adjustment information is the venting volume, obtain the venting efficiency coefficient, and calculate the venting volume based on the venting efficiency coefficient, effective deformation area, stiffness coefficient, and difference.

[0044] When the deformation is greater than the standard value, the adjustment information is the inflation amount; when the deformation is less than the standard value, the adjustment information is the deflation amount.

[0045] The formula for calculating the inflation volume is as follows:

[0046] in, This is the stiffness coefficient. For the effective deformation area, The difference. The effective deformation area is determined by the number of deformable pieces in the moderate and severe deformation ranges, based on the number of these pieces.

[0047] The formula for calculating the amount of gas released is as follows:

[0048] in, This is the stiffness coefficient. For the effective deformation area, The difference. This is the venting efficiency coefficient. This refers to the amount of gas released.

[0049] Furthermore, when the strain gauge includes a compensation strain gauge, a temperature compensation coefficient is established based on the temperature information obtained from the compensation strain gauge and the standard temperature information (such as 25°C), thereby avoiding the influence of temperature on the gas.

[0050] Therefore, when the strain gauge includes a compensating strain gauge, the formula for calculating the inflation volume is as follows:

[0051] in, This is the stiffness coefficient. For the effective deformation area, The difference. This refers to the inflation volume. To compensate for the temperature obtained by the strain gauge, This is the standard temperature.

[0052] The formula for calculating the amount of gas released is as follows:

[0053] in, This is the stiffness coefficient. For the effective deformation area, The difference. This is the venting efficiency coefficient. This refers to the amount of gas released. To compensate for the temperature obtained by the strain gauge, This is the standard temperature. Those skilled in the art will understand that the difference... It only represents the numerical difference between the two, and is not used in the calculation of positive or negative values.

[0054] As a preferred specific example 2 under embodiment 4: the adjustment information also includes rate information; The difference is compared with a first threshold and a second threshold, and the first threshold is greater than the second threshold. If the difference is greater than or equal to the first threshold, the rate information is the first rate; If the difference is greater than the second threshold and less than the first threshold, the rate information is the second rate. If the difference is less than or equal to the second threshold, the rate information is the third rate; The first speed is greater than the second speed, and the second speed is greater than the third speed.

[0055] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0056] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0057] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. A vehicle seat, comprising a support surface for supporting a driver or passenger and an airbag disposed on the support surface, the airbag supporting the driver or passenger, characterized in that, The vehicle seat also includes a control mechanism for inflating and deflating the airbag. The airbag includes a receiving cavity and a bladder body forming the receiving cavity. The bladder body includes an inner layer and an outer layer. The vehicle seat also includes a plurality of strain gauges disposed between the inner layer and the outer layer. The plurality of strain gauges are spaced apart along a preset direction to obtain the deformation amount of the airbag. The control mechanism controls the inflation and deflation of the airbag according to the deformation amount. The strain gauge includes a main strain gauge and an auxiliary strain gauge disposed at an angle to the main strain gauge, wherein the main strain gauge extends along the preset direction; The strain gauge also includes a base for fixing the main strain gauge and the auxiliary strain gauge. The base is provided with an isolation cavity, and a compensation strain gauge for collecting temperature information is provided in the isolation cavity. One end of the compensation strain gauge is fixedly connected to the base, and the other end is suspended in the isolation cavity.

2. A vehicle seat according to claim 1, characterized in that, The vehicle seat is equipped with multiple airbags, including a first airbag for supporting the neck of the driver / passenger, a second airbag for supporting the waist of the driver / passenger, a third airbag for supporting the legs of the driver / passenger, and a side airbag disposed between the first airbag and the second airbag. The control mechanism is connected to the multiple airbags through multiple independent air passages.

3. A vehicle seat according to claim 2, characterized in that, The seat is provided with multiple connecting holes that connect to the independent air passages. The airbag is provided with a connector that is inserted into the connecting holes. The connector is provided with a connecting hole that communicates with the receiving cavity.

4. A method for controlling a vehicle seat, applied to the vehicle seat according to any one of claims 1 to 3, characterized in that, The control method includes: Obtain the deformation amount; The adjustment information of the airbag is determined based on the deformation amount and the standard value; The control mechanism adjusts the airbag according to the adjustment information.

5. The vehicle seat control method according to claim 4, characterized in that, The process of obtaining the deformation includes: Obtain the deformation values ​​of multiple strain gauges; The deformation values ​​are classified according to the deformation values ​​and the set range; The deformation amount is obtained based on the deformation value at different levels.

6. The vehicle seat control method according to claim 4, characterized in that, The step of determining the airbag adjustment information based on the deformation amount and the standard value includes: Calculate the difference between the deformation and the standard value; The adjustment information includes at least the inflation volume and deflation volume; The inflation volume or deflation volume is calculated based on the difference.

7. The vehicle seat control method according to claim 6, characterized in that, The step of calculating the inflation volume or the deflation volume based on the difference includes: Obtain the effective deformable area of ​​the airbag; Obtain the stiffness coefficient of the airbag; If the adjustment information is the inflation amount, the inflation amount is calculated based on the effective deformation area, the stiffness coefficient, and the difference. If the adjustment information is the amount of gas released, obtain the gas release efficiency coefficient, and calculate the amount of gas released based on the gas release efficiency coefficient, the effective deformation area, the stiffness coefficient, and the difference.

8. A method for controlling a vehicle seat according to claim 6, characterized in that, The adjustment information also includes rate information; The difference is compared with a first threshold and a second threshold, wherein the first threshold is greater than the second threshold; If the difference is greater than or equal to the first threshold, the rate information is the first rate; If the difference is greater than the second threshold and less than the first threshold, the rate information is the second rate; If the difference is less than or equal to the second threshold, the rate information is the third rate; The first rate is greater than the second rate, and the second rate is greater than the third rate.

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