Seat passenger multi-zone detection system and automobile seat

Abstract

The utility model relates to a seat passenger multi-zone detection system and an automobile seat, the seat passenger multi-zone detection system comprises a detection module and a control module, the detection module comprises a pneumatic detection unit and a sensing unit, and the pneumatic detection unit comprises a plurality of soft elastic structural bodies arranged on a seat cushion or / and a backrest in a matrix mode; the sensing unit is connected with the soft elastic structural body to detect the air pressure value of the soft elastic structural body; the input end of the control module is connected with the output end of the sensing unit, and the control module is configured as follows: firstly, the total air pressure value in the soft elastic structural bodies is obtained in a centralized mode and compared with a standard set value to judge the passenger weight grade; 2, respectively acquiring an air pressure value in each soft elastic structure, and comparing the air pressure value with a standard set value after set operation so as to judge the weight grade of the passenger; and based on the obtained air pressure values of the soft elastic structural bodies, the distribution condition of the air pressure values at different block positions on the seat cushion or / and the backrest is analyzed, and then the distribution condition is compared with a standard set value to judge the sitting posture of the passenger.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of seat occupant detection, in particular to a seat occupant multi-zone detection system and a car seat. BACKGROUND

[0002] Cars are important tools for people to travel in modern society, and not only need to ensure normal driving functions, but also vehicle safety is one of the important functions of the car, through the components such as airbags and seat belts, to protect the safety of the driver or occupant.

[0003] At present, in order to control the inflation force of the airbag and the pretightening force of the seat belt according to the weight and body shape of the driver or passenger, an occupant classification detection device is usually used to divide the occupant weight level, and the implementation principle is mainly to use the change of the internal air pressure of the detection air bag when the occupant of different weights sits to determine the occupant weight level, but the existing detection device has single function and poor application flexibility. CONTENT OF THE INVENTION

[0004] In order to solve part or all of the above technical problems, the present application provides a seat occupant multi-zone detection system and a car seat.

[0005] According to the first aspect of the present application, a seat occupant multi-zone detection system is provided, which comprises a detection module and a control module, the detection module comprises a pneumatic detection unit and a sensing unit, the pneumatic detection unit comprises a plurality of soft elastic structure bodies arranged in a matrix on the seat cushion or / and backrest; the sensing unit is connected with the soft elastic structure body, and is used for detecting the air pressure value in the soft elastic structure body; the input end of the control module is connected with the output end of the sensing unit, and the control module is configured as follows: first, the total air pressure value in the plurality of soft elastic structure bodies can be obtained, and the total air pressure value is compared with the standard set value to determine the occupant weight level; second, the air pressure value in each soft elastic structure body can be obtained, and after the set operation, the air pressure value is compared with the standard set value to determine the occupant weight level; and based on the air pressure values in the soft elastic structure bodies obtained in the foregoing, the distribution of the air pressure values at different block positions on the seat cushion or / and backrest is analyzed, and then compared with the standard set value to determine the current sitting posture of the occupant.

[0006] Further, the sensing unit comprises a plurality of air pressure sensors, each air pressure sensor is correspondingly arranged with a soft elastic structure body, specifically, the input end of the air pressure sensor is connected with the soft elastic structure body, and the output end of the air pressure sensor is connected with the control module.

[0007] Further, the pneumatic detection unit further comprises a gas supply device in communication with the soft elastic structure, the gas supply device is configured to inflate or deflate the soft elastic structure, one, the air pressure of the soft elastic structure can be adaptively adjusted to maintain the balance of the air pressure inside and outside; two, based on the passenger weight level or / and the sitting posture output by the control module, the air pressure of the soft elastic structure can be adaptively adjusted to change the body pressure distribution of the seat surface and improve the passenger riding comfort.

[0008] Further, the detection module further comprises a pneumatic adjusting device, the pneumatic adjusting device is arranged between the seat cushion and the pneumatic detection unit, the pneumatic adjusting device is configured to: based on the passenger weight level or / and the sitting posture output by the control module, the softness of the seat cushion or / and the backrest can be adaptively adjusted by the pneumatic adjusting device to improve the passenger riding comfort.

[0009] Further, the pneumatic adjusting device comprises: a plurality of support air bags corresponding to the soft elastic structures and an air source body for supplying air to the support air bags, the control module can adaptively control the air source body to inflate or deflate the support air bags based on the passenger weight level or / and the sitting posture.

[0010] Further, the detection module further comprises a pressure bearing part and a load bearing part, the pressure bearing part is arranged above the soft elastic structures, and the load bearing part is arranged below the soft elastic structures, when the pressure bearing part is pressed downward by external force, the soft elastic structures are extruded, the soft elastic structures are extruded and deformed under the support of the load bearing part, the internal air pressure value changes, and the internal air pressure value can be detected by the air pressure sensor.

[0011] Further, a one-way check valve is arranged between each soft elastic structure and the corresponding air pressure sensor, the one-way check valve can reduce the possibility of internal air leakage of the soft elastic structure caused by long-time extrusion, and maintain the air tightness of the soft elastic structure.

[0012] Further, the sensing unit further comprises a cabin sensor connected with the control module, the cabin sensor is used to detect the external air pressure value, and the difference between the external air pressure value and the standard atmospheric pressure value is calculated by the control module, and the standard setting value can be corrected according to the difference.

[0013] Further, the soft elastic structure is filled with a soft rebound body, and the soft rebound body can be at least one of foamed sponge body, three-dimensional spacer fabric, wave-shaped rubber-plastic spacer or soft elastic non-woven pad.

[0014] According to the second aspect of the utility model, provide a kind of automobile seat, it includes foam layer and face cover layer, and the multi-zone detection system described in the first aspect of the utility model.

[0015] From the above technical solution, in the multi-zone detection system described in the first aspect of the utility model and the automobile seat described in the second aspect of the utility model, one, the total value of air pressure in multiple soft elastic structures can be obtained, and the total value of air pressure is compared with standard set value, to determine the weight grade of occupant;Second, the air pressure value in each soft elastic structure can be obtained, and after set operation, it is compared with standard set value, to determine the weight grade of occupant;And, based on the air pressure value obtained in each soft elastic structure, the distribution of air pressure value at different block positions on seat cushion or / and backrest is analyzed, and then compared with standard set value to determine the current sitting posture of occupant, in addition, the air pressure of the soft elastic structure can be adaptively adjusted based on the weight grade of occupant or / and sitting posture, to change the body pressure distribution of the seat surface, and improve the comfort of occupant.

[0016] In addition, the automobile seat of the utility model also has the advantages of simple structure, easy assembly, safe and reliable use, and is convenient for implementation and popularization and application. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 It is the structure schematic diagram of the multi-zone detection system of the embodiment of the utility model;

[0019] Figure 2 It is the schematic diagram showing the arrangement of soft elastic structure on the seat;

[0020] Figure 3 It is the schematic diagram showing the standard posture position of occupant sitting on the seat;

[0021] Figure 4 It is the schematic diagram showing Figure 3 The body pressure distribution of main hip pressure zone and main back pressure zone in;

[0022] Figure 5 It is the circuit logic schematic diagram of the multi-zone detection system in; Figure 1

[0023] Figure 6 ​This is a circuit logic diagram of a multi-zone detection system with the gas supply device involved;

[0024] Figure 7 This is a circuit logic diagram showing a multi-zone detection system in another implementation method;

[0025] Figure 8 This is a schematic diagram showing the structure of a multi-zone detection system with the intervention of a pneumatic adjustment device;

[0026] Figure 9 It is a display Figure 8 A circuit logic diagram of a multi-zone detection system under certain conditions;

[0027] Figure 10 This is another implementation method Figure 8 Circuit logic diagram of a multi-zone detection system in a state;

[0028] Figure 11 This is a schematic diagram showing the body pressure distribution in one sitting posture;

[0029] Figure 12 This is a schematic diagram showing the body pressure distribution in one sitting posture;

[0030] Figure 13 This is a schematic diagram showing the body pressure distribution in one sitting posture;

[0031] Figure 14 This is a schematic diagram showing the body pressure distribution in one sitting posture;

[0032] Figure 15 This is a schematic diagram showing the body pressure distribution in one sitting posture;

[0033] Figure 16 This is a schematic diagram showing the body pressure distribution in one sitting posture;

[0034] Figure 17 This is a schematic diagram showing the body pressure distribution in one sitting posture;

[0035] Figure 18 This is a schematic diagram showing the body pressure distribution in one of the sitting postures.

[0036] Explanation of reference numerals in the attached drawings: 1. Detection module; 11. Pneumatic detection unit; 111. Soft elastic structure; 12. Sensing unit; 121. Air pressure sensor; 122. One-way check valve; 13. Pressure bearing part; 14. Support part; 15. Air supply device; 16. Inflation / depression valve group; 17. Air pump; 18. Circuit connector; 2. Control module; 3. Seat cushion; 31. Main buttock pressure zone; 4. Backrest; 41. Main back pressure zone; 5. Cockpit sensor; 6. Pneumatic adjustment device; 61. Support air bag; 62. Air source body; 7. Foam layer; 8. Outer cover layer; 9. Support seat spring. DETAILED DESCRIPTION

[0037] The application will be further described below in conjunction with the accompanying drawings Figures 1-18 The application will be further described below in conjunction with the accompanying drawings Embodiments

[0038] As mentioned in the background, in order to solve the problems in the prior art, the application provides a seat occupant multi-zone detection system, which is arranged between the seat foam and the seat framework, more specifically, between the seat foam and the support spring 9, and comprises:

[0039] a detection module 1 and a control module 2,

[0040] The detection module 1 comprises a pneumatic detection unit 11 and a sensing unit 12,

[0041] The pneumatic detection unit 11 comprises a plurality of soft elastic structures 111 arranged in a matrix on the seat cushion 3 and / or the backrest 4; the sensing unit 12 is connected to the soft elastic structures 111 and is used to detect the air pressure values in the soft elastic structures 111.

[0042] The input end of the control module 2 is connected to the output end of the sensing unit 12,

[0043] The control module 2 is configured to:

[0044] Firstly, the total air pressure values in the plurality of soft elastic structures 111 can be obtained and compared with a standard set value to determine the weight grade of the occupant.

[0045] Secondly, the air pressure values in each soft elastic structure 111 can be obtained respectively, and after set operation, compared with a standard set value to determine the weight grade of the occupant; and based on the air pressure values in each soft elastic structure 111 obtained as mentioned above, the distribution of the air pressure values at different block positions on the seat cushion 3 and / or the backrest 4 is analyzed, and compared with a standard set value to determine the current sitting posture of the occupant.

[0046] In a preferred embodiment, the sensing unit 12 comprises a plurality of air pressure sensors 121, each of which is arranged corresponding to one soft elastic structure 111, specifically, the input end of the air pressure sensor 121 is connected to the soft elastic structure 111, and the output end of the air pressure sensor 121 is connected to the control module 2, based on which the air pressure values of the corresponding soft elastic structures 111 can be detected respectively.

[0047] In a preferred embodiment, a one-way check valve 122 is arranged between each soft elastic structure 111 and the corresponding air pressure sensor 121. The one-way check valve 122 can reduce the possibility of air leakage in the soft elastic structure 111 caused by long-time compression of the soft elastic structure 111, and maintain the air tightness of the soft elastic structure 111. It should be noted that the one-way check valve 122 is a device known in the art, and thus the specific structure thereof will not be described in detail.

[0048] In a preferred embodiment, the soft elastic structure 111 is filled with a soft resilient body, which can be at least one of a foamed sponge body, a three-dimensional spacer fabric, a corrugated rubber spacer, or a soft elastic non-woven pad.

[0049] In a preferred embodiment, the detection module 1 further comprises a pressure bearing part 13 and a supporting part 14. The pressure bearing part 13 is arranged above the soft elastic structures 111, and the supporting part 14 is arranged below the soft elastic structures 111. Both the pressure bearing part 13 and the supporting part 14 are configured as a plate-shaped hard structure. Specifically, the pressure bearing part 13 can be a hard (plastic or metal), flexible, or relatively foamed and dense felt pad material. The supporting part 14 can also be a hard (plastic or metal), flexible, or relatively foamed and dense felt pad material. However, the hardness or rigidity of the supporting part 14 should be greater than that of the pressure bearing part 13.

[0050] When the pressure bearing part 13 is pressed downward by an external force, the soft elastic structures 111 are compressed and deformed downward. Under the supporting and bearing action of the supporting part 14, the internal air pressure value of the soft elastic structures 111 changes. The air pressure sensor 121 can detect the internal air pressure value and output it to the control module 2. The control module 2 compares the air pressure value with a standard set value, and then outputs the occupant weight level and the current occupant sitting posture to the outside.

[0051] In a preferred embodiment, the sensing unit 12 further comprises a cabin sensor 5 connected to the control module 2. The cabin sensor 5 is used to detect the external air pressure value. The control module 2 calculates the difference between the external air pressure value and a standard atmospheric pressure value, and corrects the standard set value based on the difference.

[0052] In a preferred embodiment, the pneumatic detection unit 11 further comprises a gas supply device 15 arranged in communication with the soft elastic structure 111, the gas supply device 15 is configured to inflate or deflate the soft elastic structure 111, the gas supply device 15 can be selected as a gas pump 17, and the soft elastic structure 111 is inflated or deflated through the cooperation of the gas pump 17 and the inflation and deflation valve group 16, in some cases, the gas supply device 15 can also be regarded as part of the control module 2;

[0053] By arranging the gas supply device 15, first, the air pressure of the soft elastic structure 111 can be adjusted to maintain the balance of the air pressure inside and outside;

[0054] Second, based on the passenger weight level or / and sitting posture output by the control module 2, the air pressure of the soft elastic structure 111 can be adjusted to change the body pressure distribution of the seat cushion, thereby improving the passenger's riding comfort.

[0055] In a preferred embodiment, the detection module 1 further comprises a pneumatic adjustment device 6, which is arranged between the seat foam and the pneumatic detection unit 11, and the pneumatic adjustment device 6 is configured to:

[0056] Based on the passenger weight level or / and sitting posture output by the control module 2, the pneumatic adjustment device 6 can adjust the hardness of the seat cushion 3 or / and the backrest 4 to improve the passenger's riding comfort;

[0057] Further explanation, the application scenario of this pneumatic adjustment device 6 can be understood as:

[0058] One: the pneumatic detection unit 11 and the sensing unit 12 only have detection function and result feedback function, if it is necessary to adaptively improve the comfort of the passenger's ride, the pneumatic adjustment device 6 is needed to realize, that is, the pneumatic detection unit 11 and the sensing unit 12 are only regarded as the detection end and the feedback end, and the pneumatic adjustment device 6 is regarded as the adjustment execution end, the two-way system runs in parallel, so that the complete functions of detection, feedback and adjustment execution can be realized;

[0059] Two, in some cases, it also cannot be ruled out that the pneumatic detection unit 11, the sensing unit 12 and the control module 2 also have the complete functions of detection, feedback and adjustment execution, this case can be one-way main detection and main adjustment, and the other way is auxiliary adjustment according to the detection result, but in actual use, this application scenario should also be considered by multiple parties as appropriate.

[0060] In a preferred embodiment, the pneumatic adjustment device 6 comprises a support air bag 61 and a gas source body 62,

[0061] The support air bag 61 is provided with a plurality of and corresponds to a plurality of the soft elastic structure 111 is set, the air source body 62 is used to supply air to the support air bag 61, the control module 2 can be based on the passenger weight level or / and the adaptive control of the air source body 62 to the support air bag 61 inflates or the support air bag 61 deflates.

[0062] In a preferred embodiment, the control module 2 can be an ECU electronic controller, based on the controller combined with the detection module 1, the function principle of the detection module 1 involved in the utility model is further explained:

[0063] Firstly, the standard set value can be several air pressure value intervals, the several air pressure value intervals correspond to the human body type information of different weight intervals respectively, compare the detected air pressure value with several air pressure value intervals, and output the corresponding passenger weight level, such as no one, small body weight passenger, medium body weight passenger, heavy body weight passenger, etc.

[0064] Secondly, the detection system of the utility model has centralized detection and partition detection, that is, the total air pressure value can be directly output through the controller connected with external communication; The air pressure value of each independent soft elastic structure 111 can also be detected in partition, and the total air pressure value is output through external communication after collection operation;

[0065] Further, based on the air pressure value of different positions detected in partition, the body pressure distribution of the seat surface under the current state can be analyzed, and according to the body pressure distribution, the current sitting posture of the passenger can be judged, such as forward, leg lifting, tilting or left and right bias sitting posture, etc.

[0066] Further, based on the different passenger weight level and passenger posture obtained, the air pressure value of the soft elastic structure 111 can be adaptively adjusted, the body pressure distribution of the seat surface is changed, so as to improve the comfort of the passenger, and this adaptive adjustment function is also very helpful for driving safety, for example, some passengers are used to bias sitting (unhealthy sitting posture, low safety factor), which can improve the body pressure distribution of the passenger under this condition, so as to regulate the sitting posture of the passenger and ensure the safety of driving.

[0067] The following continues to further explain the partition detection of the passenger posture (the detection is mainly based on the body pressure distribution of the main hip pressure area 31): wherein,

[0068] As shown in Figure 11 When the air pressure sensor 121 detects that the air pressure of the plurality of soft elastic structures 111 involved in the seat surface reaches the set threshold value, the control module 2 can analyze the body pressure distribution of the seat surface under the current state, and according to the body pressure distribution, it is judged that the current sitting posture of the passenger belongs to the normal standard sitting posture.

[0069] AsFigure 12 As shown in FIG. 6, when the air pressure sensor 121 detects that the air pressure of the plurality of soft elastic structure bodies 111 involved in the rear part of the seat surface all reaches the set threshold value, while the air pressure of the plurality of soft elastic structure bodies 111 involved in the front part of the seat surface all does not reach the set threshold value, the control module 2 can analyze the body pressure distribution of the seat surface in the current state, and determine that the current sitting posture of the occupant belongs to normal sitting but the center of gravity is overall biased to the rear, the feet are stretched to the front and lower part of the seat, according to the body pressure distribution.

[0070] As shown in FIG. 7, when the air pressure sensor 121 detects that the air pressure of the plurality of soft elastic structure bodies 111 involved in the front part of the seat surface all reaches the set threshold value, while the air pressure of the plurality of soft elastic structure bodies 111 involved in the rear part of the seat surface all does not reach the set threshold value, the control module 2 can analyze the body pressure distribution of the seat surface in the current state, and determine that the current sitting posture of the occupant belongs to normal sitting but the center of gravity is overall biased to the front, the body has a forward leaning tendency, according to the body pressure distribution. Figure 13 As shown in FIG. 8, when the air pressure sensor 121 detects that the air pressure of the plurality of soft elastic structure bodies 111 involved in the more rear part of the seat surface all reaches the set threshold value, while the air pressure of the plurality of soft elastic structure bodies 111 involved in the front part of the seat surface all does not reach the set threshold value, the control module 2 can analyze the body pressure distribution of the seat surface in the current state, and determine that the current sitting posture of the occupant belongs to normal sitting but the legs are separated and have a tendency to lift, according to the body pressure distribution.

[0071] Figure 14 As shown in FIG. 9, when the air pressure sensor 121 detects that the air pressure of the plurality of soft elastic structure bodies 111 involved in the left side of the seat surface all reaches the set threshold value, while the air pressure of the plurality of soft elastic structure bodies 111 involved in the remaining part all does not reach the set threshold value, the control module 2 can analyze the body pressure distribution of the seat surface in the current state, and determine that the current sitting posture of the occupant is left side leaning, according to the body pressure distribution.

[0072] As shown in FIG. 10, when the air pressure sensor 121 detects that the air pressure of the plurality of soft elastic structure bodies 111 involved in the right side of the seat surface all reaches the set threshold value, while the air pressure of the plurality of soft elastic structure bodies 111 involved in the remaining part all does not reach the set threshold value, the control module 2 can analyze the body pressure distribution of the seat surface in the current state, and determine that the current sitting posture of the occupant is right side leaning, according to the body pressure distribution. Figure 15 As shown in FIG. 11, when the air pressure sensor 121 detects that the air pressure of the plurality of soft elastic structure bodies 111 involved in the left side of the seat surface all reaches the set threshold value, while the air pressure of the plurality of soft elastic structure bodies 111 involved in the remaining part all does not reach the set threshold value, the control module 2 can analyze the body pressure distribution of the seat surface in the current state, and determine that the current sitting posture of the occupant is left side leaning, according to the body pressure distribution.

[0073] Figure 16 As shown in FIG. 12, when the air pressure sensor 121 detects that the air pressure of the plurality of soft elastic structure bodies 111 involved in the right side of the seat surface all reaches the set threshold value, while the air pressure of the plurality of soft elastic structure bodies 111 involved in the remaining part all does not reach the set threshold value, the control module 2 can analyze the body pressure distribution of the seat surface in the current state, and determine that the current sitting posture of the occupant is right side leaning, according to the body pressure distribution.

[0074] As shown in FIG. 13, when the air pressure sensor 121 detects that the air pressure of the plurality of soft elastic structure bodies 111 involved in the left side of the seat surface all reaches the set threshold value, while the air pressure of the plurality of soft elastic structure bodies 111 involved in the remaining part all does not reach the set threshold value, the control module 2 can analyze the body pressure distribution of the seat surface in the current state, and determine that the current sitting posture of the occupant is left side leaning, according to the body pressure distribution. Figure 17 ​​As shown, when the air pressure sensor 121 detects that the air pressure of the plurality of soft elastic structure bodies 111 close to the left rear of the seat surface all reaches the set threshold, while the air pressure of the plurality of soft elastic structure bodies 111 involved in the remaining part all does not reach the set threshold, the control module 2 can analyze the body pressure distribution of the seat surface in the current state, and judge that the current sitting posture of the occupant is leaning to the left rear.

[0075] As shown, when the air pressure sensor 121 detects that the air pressure of the plurality of soft elastic structure bodies 111 close to the left rear of the seat surface all reaches the set threshold, while the air pressure of the plurality of soft elastic structure bodies 111 involved in the remaining part all does not reach the set threshold, the control module 2 can analyze the body pressure distribution of the seat surface in the current state, and judge that the current sitting posture of the occupant is leaning to the left rear. Figure 18

[0076] In a preferred embodiment, the multi-zone detection system can also access an AI model, allowing AI to learn continuously in experience through data-driven methods. After multiple rounds of training, the model can make more accurate judgments on new data. Based on the detection system, by accessing the AI model, more accurate, more detailed, and more comprehensive occupant classification detection and occupant posture determination can be achieved. Embodiment

[0077] On the basis of Embodiment 1, further, the application proposes an automobile seat, which comprises a foaming layer 7 and a surface cover layer 8, and the multi-zone detection system described in the above embodiments, which is installed on the side of the seat away from the occupant, including but not limited to the seat cushion 3, the seat back 4, the seat side wing or the seat leg support position. Based on the multi-zone detection system, centralized detection and partitioned detection can be achieved, and finally the weight grade of the occupant and the current sitting posture can be obtained.

[0078] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "vertical", "horizontal" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0079] In addition, the terms "first", "second", and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0080] ​In this application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0081] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should be covered in the scope of the claims and the specification of the utility model. Especially, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A multi-zone detection system for seat occupants, characterized in that, include: The detection module (1) and the control module (2) The detection module (1) includes a pneumatic detection unit (11) and a sensing unit (12). The pneumatic detection unit (11) includes a plurality of soft elastic structures (111) arranged in a matrix on the seat cushion (3) and / or the seat back (4) of the seat; the sensing unit (12) is connected to the soft elastic structure (111) and is used to detect the air pressure value inside the soft elastic structure (111). The input terminal of the control module (2) is connected to the output terminal of the sensing unit (12). The control module (2) is configured as follows: Firstly, it can centrally acquire the total air pressure value within multiple soft elastic structures (111) and compare this total air pressure value with the standard set value to determine the occupant weight level; Secondly, it can obtain the air pressure value in each of the soft elastic structures (111) separately, perform a set calculation and then compare it with the standard setting value to determine the occupant's weight level; and, based on the air pressure value obtained in each of the soft elastic structures (111) above, it can analyze the distribution of air pressure values ​​at different locations on the seat cushion (3) and / or the seat back (4) of the seat, and then compare it with the standard setting value to determine the occupant's current sitting posture.

2. The multi-zone detection system according to claim 1, characterized in that: The sensing unit (12) includes multiple pressure sensors (121), each of which is associated with a soft elastic structure (111). Specifically, the input end of the pressure sensor (121) is connected to the soft elastic structure (111), and the output end of the pressure sensor (121) is connected to the control module (2).

3. The multi-zone detection system according to claim 2, characterized in that: The pneumatic detection unit (11) further includes an air supply device (15) connected in communication with the soft elastic structure (111), the air supply device (15) being configured to inflate or deflate the soft elastic structure (111). Firstly, it can adaptively adjust the air pressure of the soft elastic structure (111) to maintain its internal and external air pressure balance; Secondly, based on the occupant weight level and / or sitting posture output by the control module (2), the air pressure of the soft elastic structure (111) can be adaptively adjusted to change the body pressure distribution of the seat surface and improve the occupant's riding comfort.

4. The multi-zone detection system according to claim 1, characterized in that: The detection module (1) further includes a pneumatic adjustment device (6), which is disposed between the seat foam and the pneumatic detection unit (11). The pneumatic adjustment device (6) is configured to: Based on the occupant weight level and / or seating posture output by the control module (2), the softness and hardness of the seat cushion (3) and / or backrest (4) can be adaptively adjusted by the pneumatic adjustment device (6) to improve occupant comfort.

5. The multi-zone detection system according to claim 4, characterized in that: The pneumatic adjustment device (6) includes: a supporting air bag (61) and an air source (62). The supporting airbags (61) are provided in multiple ways and are arranged one-to-one with the multiple soft elastic structures (111). The air source (62) is used to supply air to the supporting airbags (61). The control module (2) can control the air source (62) to inflate or deflate the support air bag (61) based on the occupant's weight class and / or riding posture adaptability.

6. The multi-zone detection system according to claim 2, characterized in that: The detection module (1) further includes a pressure-bearing part (13) and a support part (14). The pressure-bearing part (13) is disposed above the plurality of soft elastic structures (111), and the support part (14) is disposed below the plurality of soft elastic structures (111). When the pressure-bearing part (13) is pressed down by an external force, it will squeeze the soft elastic structure (111). Under the support of the load-bearing part (14), the soft elastic structure (111) is squeezed and deformed, and its internal air pressure value changes. The internal air pressure value can be detected by the air pressure sensor (121).

7. The multi-zone detection system according to claim 2, characterized in that: A one-way check valve (122) is also provided between each of the soft elastic structures (111) and the corresponding air pressure sensor (121). The one-way check valve (122) can reduce the possibility of air leakage inside the soft elastic structure (111) due to long-term compression, and maintain the airtightness of the soft elastic structure (111).

8. The multi-zone detection system according to claim 1, characterized in that: The sensing unit (12) also includes a cabin sensor (5) connected to the control module (2). The cabin sensor (5) is used to detect the external air pressure value. The control module (2) calculates the difference between the external air pressure value and the standard atmospheric pressure value, and the standard setting value can be corrected based on this difference.

9. The multi-zone detection system according to claim 1, characterized in that: The soft elastic structure (111) is filled with a soft resilient body, which can be at least one of foamed sponge, three-dimensional spacer fabric, corrugated rubber and plastic spacer, or soft elastic non-woven pad.

10. A car seat, characterized in that: The car seat includes a foam layer (7) and a cover layer (8), as well as the multi-zone detection system according to any one of claims 1-9.

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