A seat and method for identifying passenger body shape based on a multi-point massage system

Abstract

The present invention discloses a seat and method for identifying the body shape of an occupant based on a multi-point massage system, comprising: a seat body; an air pump; a voltage stabilizing device; a sensor module; a massage air bag, wherein the designated area comprises: a back area, wherein the shoulder area is used to estimate the height of the occupant; a waist area, wherein the waist area is used to identify the waist height of the occupant and the theoretical comfortable ejection amount of the massage air bag; a wing area, which is used to estimate the body shape of the occupant; a hip area, which is used to estimate the weight of the occupant; an electromagnetic valve; and a main control unit, which is used to identify the size of the external load in the identification area where the massage air bag is located according to the electrical signal of the flow sensor.

Description

Technical Field

[0001] The present invention belongs to the field of automobile seats and intelligent cockpits, and in particular to the field of seats capable of recognizing the body shape of passengers. Background Art

[0002] In recent years, more and more car models have seat massage functions. However, if you want to start the system comfort adaptive adjustment to achieve better comfort and intelligent customer experience, you need to identify the height and body shape of the occupants. There are two existing technical routes, namely, the occupant body shape recognition solution based on pressure sensors / pressure distribution pads and the member body shape recognition solution based on cameras.

[0003] Chinese patent CN111907458A provides a pneumatic identification device for the body weight of a seat occupant and a pneumatic identification seat, wherein the pneumatic identification device includes a control unit and a sensor device; the sensor device includes a pneumatic sensor device and an auxiliary sensor device; the pneumatic sensor device includes at least one soft elastic hollow structure and a sensor unit; the soft elastic hollow structure is connected to a first air pressure sensor, and the first air pressure sensor is used to detect a first air pressure value Pa in the soft elastic hollow structure; the control unit is configured to compare the first air pressure value Pa with a standard set value and output the human weight type accordingly; the auxiliary sensor device includes a pressure-bearing top plate and a towing bottom plate respectively installed on the two end surfaces of the soft elastic hollow structure. This scheme is an occupant body shape identification scheme based on a pressure sensor / pressure distribution pad. However, the main problem with this scheme is that the pressure distribution pad / sensor is expensive, and it is difficult to apply it to consumer-grade vehicles or smart cockpit products at this stage.

[0004] For the camera-based body shape recognition solution, the principle of this solution is to identify the outline of the occupants based on the camera inside the cockpit, and obtain the body shape data by comparing the reference point size and proportional conversion. The main problem with this solution is that it can only identify the height and body shape of the occupants, but cannot obtain pressure distribution information, and cannot perform adaptive adjustment of system comfort. Summary of the invention

[0005] The embodiment of the present application provides an occupant body shape recognition seat and method based on a multi-point massage system, rationally utilizes the massage air bags of the multi-point massage system, obtains the pressure distribution information of the seat through the gas pressure data of the massage air bags, and realizes adaptive comfort adjustment of the massage air bags.

[0006] The embodiment of the present application provides an occupant body shape recognition seat based on a multi-point massage system, comprising:

[0007] Seat body;

[0008] An air pump, the air pump being used to generate air pressure;

[0009] A pressure stabilizing device, the pressure stabilizing device is connected to the pump body and is used to stabilize the air pressure output by the air pump;

[0010] A sensor module, the sensor module comprising:

[0011] A flow sensor, the flow sensor is used to monitor airflow;

[0012] A pressure sensor, wherein the pressure sensor is used to monitor air pressure;

[0013] A massage air bag, the massage air bag is arranged in a designated area in the seat and connected to the air pump, the designated area includes:

[0014] a back region, the shoulder region being used to estimate the height of the occupant;

[0015] The waist area is used to identify the waist height of the occupant and the theoretical comfort of the massage airbag.

[0016] Appropriate ejection amount;

[0017] flank area, used to estimate occupant size;

[0018] the hip area, used to estimate occupant weight;

[0019] A solenoid valve, disposed between the pump body and the massage air bag, for controlling the inflation and deflation of the massage air bag;

[0020] The main control unit is used to identify the size of the external load in the identification area where the massage air bag is located according to the electrical signal of the flow sensor.

[0021] Preferably, in the occupant body shape recognition seat based on the multi-point massage system, the pressure stabilizing device comprises:

[0022] A pressure limiting valve, the pressure limiting valve is connected to the output end of the air pump, and the pressure limiting valve is used to limit the maximum air pressure;

[0023] A pressure-maintaining valve, the pressure-maintaining valve being connected to the output end of the pressure-limiting valve to ensure a minimum air pressure;

[0024] A buffer zone, wherein the input end of the buffer zone is connected to the output end of the pressure-maintaining valve, the output end of the buffer zone is connected to the solenoid valve, and the buffer zone is used to stabilize air pressure fluctuations.

[0025] Preferably, in the occupant body shape recognition seat based on the multi-point massage system, the sensor module further comprises: an occupancy sensor, and the occupancy sensor is used to detect seat occupancy.

[0026] The embodiment of the present application also provides a method for identifying the body shape of an occupant based on a multi-point massage system, comprising the following steps:

[0027] S1) performing no-load calibration on a designated area where the massage airbag is located, and recording no-load calibration data of the designated area, wherein the designated area includes: a back area, a waist area, a flank area, and a buttocks area;

[0028] S2) inflating the massage airbags in the back area, determining the human back departure line according to the relationship between the inflation flow and pressure of the massage airbags and time, and starting a corresponding massage program;

[0029] S3) inflating the massage airbags in the buttocks area, and estimating the load according to the relationship between the inflation flow rate and pressure of the massage airbags and time;

[0030] S4) acquiring seat adjustment data of a seat memory controller;

[0031] S5) estimating occupant weight information according to the seat adjustment data and the borne load;

[0032] S6) adaptively adjusting the massage airbags in the designated area according to the human back departure line and the occupant weight information.

[0033] Preferably, in the method for identifying the occupant's body shape based on a multi-point massage system, the step S1 of no-load calibration further comprises:

[0034] S11) obtaining an occupancy detection signal and an engine ignition signal;

[0035] S12) if there is no occupancy detection signal and engine ignition signal, execute the next step, otherwise execute the previous step;

[0036] S13) performing an inflation and deflation cycle on the designated area.

[0037] Preferably, in the occupant body shape recognition method based on a multi-point massage system, the back area includes: a first back area and a second back area, and the first back area is arranged above the second back area.

[0038] Preferably, in the method for recognizing the body shape of an occupant based on a multi-point massage system, the step S2 of determining the back departure line of the human body from the seat body and starting the corresponding massage program further comprises:

[0039] S21) inflating the massage airbags in the first back region, and obtaining the relationship between the inflation flow rate and pressure of the massage airbags in the first back region and time;

[0040] S22) comparing the inflation flow and pressure of the massage airbags in the first back area with the calibration data, if they are less than the calibration data, the back departure line is at or above the first back area, and the first massage program is run, the first massage program is to run the massage airbags in the back area, otherwise, proceed to the next step;

[0041] S23) inflating the massage airbags in the second back area, and obtaining the inflation flow rate and pressure of the massage airbags in the second back area versus time;

[0042] S24) Compare the inflation flow and pressure of the massage airbags in the second back area with the calibration data; if they are less than the calibration data, the back departure line is between the first back area and the second back area, and a second massage program is run, the second massage program is to run the massage airbags in the waist area and the back area; otherwise, the back departure curve is below the second back area, and a third massage program is run, the third massage program is to run the massage airbags in the waist area.

[0043] Preferably, in the method for recognizing the body shape of an occupant based on a multi-point massage system, the adaptive adjustment further comprises:

[0044] Adjusting the ejection amount of the massage airbags in the wing area;

[0045] The ejection amount of the massage airbags in the waist area is adjusted.

[0046] Preferably, in the method for recognizing the body shape of an occupant based on a multi-point massage system, the step of adjusting the ejection amount of the massage airbags in the wing area further comprises:

[0047] Assessing the body shape of the occupant based on the relationship between the back departure line of the human body and the weight information, and adjusting the massage airbags in the wing area;

[0048] The massage air bags in the wing areas are inflated and deflated until a comfortable theoretical air pressure is reached.

[0049] Preferably, in the method for recognizing the body shape of an occupant based on a multi-point massage system, the step of adjusting the ejection amount of the massage airbag in the waist area further comprises:

[0050] estimating the waist height of a human body based on the human back departure line and the seat adjustment data;

[0051] The massage air bag in the waist area is inflated and deflated until a comfortable theoretical air pressure is reached.

[0052] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0053] 1. By adding flow sensors and voltage stabilizers to the existing hardware equipment of the multi-point pneumatic massage system, combined with software design, adaptive matching of occupant body shape recognition and mode and pneumatic system adjustment can be achieved.

[0054] 2. Product functions can be greatly improved with minimal cost increase, achieving better comfort and intelligent customer experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 This is a schematic diagram of the layout of a multi-point massage system preferably in this embodiment;

[0056] Figure 2 This is a schematic diagram of the air path of a seat for multi-passenger body shape recognition preferably in this embodiment;

[0057] Figure 3 This is a schematic diagram of a preferred voltage stabilizing device of this embodiment;

[0058] Figure 4 This is an electrical schematic diagram of a preferred main control unit of this embodiment;

[0059] Figure 5 This is a flow chart of a method for recognizing the body shape of an occupant preferably based on a multi-point massage system in this embodiment;

[0060] Figure 6 This is a flow chart of no-load calibration preferably performed in this embodiment;

[0061] Figure 7 Flow chart of the preferred human back separation curve and the start of the massage program in this embodiment;

[0062] Figure 8 This is a flow chart of the preferred embodiment of adaptively adjusting the massage airbags in the designated area.

[0063] Reference numerals:

[0064] Seat body - 100;

[0065] Air pump - 200;

[0066] Voltage stabilizer - 300;

[0067] Pressure limiting valve-301;

[0068] Pressure maintaining valve-302;

[0069] Buffer - 303;

[0070] Sensor module-400;

[0071] Pressure sensor-401;

[0072] Flow sensor-402;

[0073] Occupancy sensor - 403;

[0074] Solenoid valve-500;

[0075] Massage airbag-600;

[0076] Main control unit - 700;

[0077] Dorsal region-A;

[0078] First dorsal region - A1;

[0079] Second dorsal region - A2;

[0080] Lumbar region - B;

[0081] flanking region-C;

[0082] Hip region - D;

[0083] Seat memory controller - 800;

[0084] Slide rail adjustment motor-801;

[0085] Bid auger adjustment motor -802;

[0086] Backrest tilt adjustment motor-803;

[0087] Bidstand tilt adjustment motor -804. DETAILED DESCRIPTION

[0088] The inflation pressure-time relationship of the massage airbag under different loads is different. Based on this difference, it is possible to identify whether the area where the airbag is located is subject to external loads, and roughly estimate the load size based on the calibration database. The embodiment of the present application provides an occupant body shape recognition seat and method based on a multi-point massage system, rationally utilizes the massage airbag of the multi-point massage system, obtains the pressure distribution information of the seat through the gas pressure data of the massage airbag, and realizes the adaptive adjustment of the comfort of the massage airbag.

[0089] The technical solution in the embodiment of the present application is to solve the above-mentioned problem of obtaining the pressure distribution information of the seat and realizing adaptive comfort adjustment. The overall idea is as follows:

[0090] By setting up a pressure stabilizing device in the system, the air pressure of the output air pump can be stabilized, and then the flow and pressure of the gas can be measured by the sensor module installed at the rear end, so that the main control combined with the software design can realize the adaptive matching of the occupant's body shape recognition, massage mode selection and pneumatic system adjustment.

[0091] The preferred embodiments of the application are described in detail below with reference to the accompanying drawings.

[0092] Figure 1 This is a schematic diagram of the layout of the preferred multi-point massage system of this embodiment. Figure 2 This is a schematic diagram of the air path of the seat with multiple occupant body shape recognition in this embodiment. Figure 1 and Figure 2 As shown, the occupant body shape recognition seat based on the multi-point massage system includes: a seat body 100; an air pump 200 for generating air pressure; a voltage stabilizing device 300 for stabilizing the air pressure of the air pump; a sensor module 400 for monitoring the gas pressure flow and seat status; a solenoid valve 500 for controlling the gas flow direction, the solenoid valve 500 is used to control the inflation and deflation of the massage air bag 600; a main control unit 700 is used to identify the size of the external load in the identification area where the massage air bag is located according to the electrical signal of the sensor module 400.

[0093] The sensor module 400 includes: a pressure sensor 401 and a flow sensor 402. The pressure sensor 401 is used to monitor the air pressure at the output port of the air pump 200; the flow sensor is used to monitor the air flow output by the air pump 200.

[0094] like Figure 1 As shown, the massage airbag 600 is mainly set up in the following areas: back area A, in which the massage airbag 600 can be used to estimate the height of the occupant, and the back area A also includes a first back area A1 and a second back area A2, which can determine the back deviation curve of the human body from the seat according to the inflation and deflation of the massage airbag 600 set therein; lumbar area B, in which the massage airbag 600 is used to identify the waist height of the occupant and the theoretical comfortable ejection amount of the massage airbag 400; wing area C, in which the massage airbag 600 is used to estimate the body shape of the occupant; and hip area D, in which the massage airbag 400 is used to estimate the weight of the occupant.

[0095] Figure 3 FIG. 1 is a schematic diagram of a preferred voltage stabilizing device in this embodiment. Figure 3 As shown, the pressure stabilizing device 300 includes: a pressure limiting valve 301, a pressure maintaining valve 302 and a buffer zone 303. The pressure stabilizing device 300 is composed of three components, namely, the pressure limiting valve 301, the pressure maintaining valve 302 and the buffer zone 303, which are connected in series. The pressure limiting valve 301 limits the maximum air pressure, and the pressure maintaining valve 302 ensures the minimum air pressure, thereby ensuring that the input air pressure is always stable in a reasonable and stable range, and finally the air pressure fluctuation is further stabilized by the buffer zone 303 before being output to the solenoid valve 500 and the massage air bag 600.

[0096] Figure 4 FIG. 1 is an electrical schematic diagram of the preferred main control unit of this embodiment. Figure 4As shown, the main control unit 700, in this embodiment, the preferred main controller is a microcontroller unit (MCU), which is used to perform the logical operations required for the judgment of each parameter. The seat memory controller 800 is an auxiliary controller, which is used to determine the position of the seat adjustment according to the electrical signals of the slide rail adjustment motor 801, the seat basin adjustment motor 802, the backrest tilt adjustment motor 803 and the seat basin tilt adjustment motor 804, and transmit the information to the main control unit as parameter input; the air pump 200 and the solenoid valve 500 corresponding to the massage air bag 600 are used as actuators to jointly complete the judgment process and the inflation and deflation of the massage air bag 600 during the adjustment process. The occupancy sensor 403, the pressure sensor 402 and the flow sensor 401 are the main input signal sources in the control logic.

[0097] like Figure 5 As shown, the embodiment of the present application also provides a method for identifying the body shape of an occupant based on a multi-point massage system. Figure 5 This is a flow chart of the method for recognizing the body shape of an occupant preferably based on a multi-point massage system in this embodiment. The method comprises the following steps:

[0098] S1) performing no-load calibration on a designated area where the massage airbag is located, and recording no-load calibration data of the designated area, wherein the designated area includes: a back area, a waist area, a flank area, and a buttocks area;

[0099] S2) inflating the massage airbags in the back area, determining the human back departure line according to the relationship between the inflation flow and pressure of the massage airbags and time, and starting a corresponding massage program;

[0100] S3) inflating the massage airbags in the buttocks area, and estimating the load according to the relationship between the inflation flow rate and pressure of the massage airbags and time;

[0101] S4) acquiring seat adjustment data of a seat memory controller;

[0102] S5) estimating occupant weight information according to the seat adjustment data and the borne load;

[0103] S6) adaptively adjusting the massage airbags in the designated area according to the human back departure line and the occupant weight information.

[0104] The specific steps of the occupant body shape recognition method based on the multi-point massage system proposed by the present method are described in detail below with reference to the diagrams.

[0105] Step S1) performing no-load calibration on the designated area where the massage airbag is located, and recording the no-load calibration data of the designated area, wherein the designated area includes: the back area, the waist area, the flank area and the buttocks area;

[0106] Figure 6 This is the preferred no-load calibration flow chart for this embodiment. Figure 6 As shown, preferably, step S1 no-load calibration further includes:

[0107] Step S11) obtaining an occupancy detection signal and an engine ignition signal;

[0108] Step S12) if there is no occupancy detection signal and engine ignition signal, execute the next step, otherwise execute the previous step;

[0109] S13) performing an inflation and deflation cycle on the designated area.

[0110] Step S2) inflating the massage airbags in the back area, determining the human back departure line and starting the corresponding massage program according to the relationship between the inflation flow and pressure of the massage airbags and time;

[0111] Figure 7 As shown in Figure 7, preferably, step S2 of determining the back departure line of the human body from the seat body and starting the corresponding massage program further includes:

[0112] S21) inflating the massage airbags in the first back region, and obtaining the relationship between the inflation flow rate and pressure of the massage airbags in the first back region and time;

[0113] S22) comparing the inflation flow and pressure of the massage airbags in the first back area with the calibration data, if they are less than the calibration data, the back departure line is at or above the first back area, and the first massage program is run, the first massage program is to run the massage airbags in the back area, otherwise, proceed to the next step;

[0114] S23) inflating the massage airbags in the second back area, and obtaining the inflation flow rate and pressure of the massage airbags in the second back area versus time;

[0115] S24) Compare the inflation flow and pressure of the massage airbags in the second back area with the calibration data; if they are less than the calibration data, the back departure line is between the first back area and the second back area, and a second massage program is run, the second massage program is to run the massage airbags in the waist area and the back area; otherwise, the back departure curve is below the second back area, and a third massage program is run, the third massage program is to run the massage airbags in the waist area.

[0116] Figure 8 This is a flow chart of the preferred embodiment of adaptively adjusting the massage airbags in the designated area. Figure 8 As shown:

[0117] Step S3) inflating the massage airbags in the buttocks area, and estimating the load according to the relationship between the inflation flow rate and pressure of the massage airbags and time;

[0118] Preferably, the massage airbags in the hip area are inflated, and according to the relationship between the inflation flow rate and pressure of the massage airbags and time;

[0119] Step S4) obtaining seat adjustment data of the seat memory controller;

[0120] Preferably, the adjustment data comprises an input seat / backrest angle.

[0121] Step S5) estimating occupant weight information according to the seat adjustment data and the borne load;

[0122] Preferably, the occupant weight information is estimated based on the relationship between the borne load and the seat / back angle.

[0123] Step S6) adaptively adjusting the massage airbags in the designated area according to the human back departure line and the occupant weight information.

[0124] Preferably, the adaptive adjustment further comprises:

[0125] Adjusting the ejection amount of the massage airbags in the wing area;

[0126] The ejection amount of the massage airbags in the waist area is adjusted.

[0127] Preferably, the step of adjusting the ejection amount of the massage airbags in the wing area further comprises:

[0128] Assessing the body shape of the occupant based on the relationship between the back departure line of the human body and the weight information, and adjusting the massage airbags in the wing area;

[0129] The massage air bags in the wing areas are inflated and deflated until a comfortable theoretical air pressure is reached.

[0130] Preferably, the step of adjusting the ejection amount of the massage airbags in the waist area further comprises:

[0131] estimating the waist height of a human body based on the human back departure line and the seat adjustment data;

[0132] The massage air bag in the waist area is inflated and deflated until a comfortable theoretical air pressure is reached.

[0133] By adding flow sensors and voltage stabilizing devices based on the existing hardware equipment of the multi-point pneumatic massage system and combining them with software design, adaptive matching of occupant body shape recognition and mode and pneumatic system adjustment can be achieved.

[0134] Product functionality can be greatly improved with minimal cost increase, providing better comfort and intelligent customer experience.

[0135] Those skilled in the art will appreciate that information, signals, and data may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips cited throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0136] Those skilled in the art will further appreciate that the various illustrative logic blocks, modules, circuits, and algorithm steps described in conjunction with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or a combination of the two. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps are generally described above in terms of their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. The technician may implement the described functionality in different ways for each specific application, but such implementation decisions should not be interpreted as resulting in a departure from the scope of the present invention.

[0137] The various illustrative logic modules and circuits described in conjunction with the embodiments disclosed herein may be implemented or executed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in cooperation with a DSP core, or any other such configuration.

[0138] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software module may reside in a RAM memory, a flash memory, a ROM memory, an EPROM memory, an EEPROM memory, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor so that the processor can read and write information from / to the storage medium. In an alternative, a storage medium may be integrated into a processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In an alternative, the processor and the storage medium may reside in a user terminal as discrete components.

[0139] In one or more exemplary embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented as a computer program product in software, each function may be stored on or transmitted by a computer-readable medium as one or more instructions or codes. Computer-readable media include both computer storage media and communication media, including any medium that facilitates the transfer of a computer program from one place to another. Storage media may be any available medium that can be accessed by a computer. As an example and not limitation, such a computer-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer. Any connection is also properly referred to as a computer-readable medium. For example, if the software is transmitted from a website, a server, or other remote source using a coaxial cable, a fiber optic cable, a twisted pair, a digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of the medium. Disk and disc as used herein include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, wherein disk often reproduces data magnetically, while disc reproduces data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0140] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Personnel familiar with the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. An occupant body shape recognition seat based on a multi-point massage system, include: Seat body; An air pump, the air pump is used to generate air pressure; A pressure stabilizing device, the pressure stabilizing device is connected to the air pump and is used to stabilize the air pressure output by the air pump; A sensor module, the sensor module comprising: A flow sensor, the flow sensor is used to monitor airflow; A pressure sensor, the pressure sensor is used to monitor air pressure; A massage air bag, the massage air bag is arranged in a designated area in the seat and connected to the air pump, the designated area includes: a back area, the back area being used to estimate the height of the occupant; A waist area, the waist area is used to identify the waist height of the occupant and the theoretical comfortable ejection amount of the massage airbag; flank area, used to estimate occupant size; the hip area, used to estimate occupant weight; A solenoid valve, disposed between the air pump and the massage air bag, for controlling the inflation and deflation of the massage air bag; A main control unit, used to identify the size of the external load in the identification area where the massage air bag is located according to the electrical signal of the flow sensor; The voltage stabilizing device comprises: A pressure limiting valve, the pressure limiting valve is connected to the output end of the air pump, and the pressure limiting valve is used to limit the maximum air pressure; A pressure-maintaining valve, the pressure-maintaining valve being connected to the output end of the pressure-limiting valve to ensure a minimum air pressure; A buffer zone, wherein the input end of the buffer zone is connected to the output end of the pressure-maintaining valve, the output end of the buffer zone is connected to the solenoid valve, and the buffer zone is used to stabilize air pressure fluctuations.

2. The occupant body shape recognition seat based on the multi-point massage system according to claim 1, It is characterized in that The sensor module further includes an occupancy sensor, which is used to detect seat occupancy.

3. A method for identifying occupant body shape based on a multi-point massage system, It is characterized in that The steps include: S1) performing no-load calibration on a designated area where the massage airbag is located, and recording no-load calibration data of the designated area, wherein the designated area includes: a back area, a waist area, a flank area, and a buttocks area; S2) inflating the massage airbags in the back area, determining the human back departure line according to the relationship between the inflation flow and pressure of the massage airbags and time, and starting a corresponding massage program; S3) inflating the massage airbags in the buttocks area, and estimating the load according to the relationship between the inflation flow rate and pressure of the massage airbags and time; S4) acquiring seat adjustment data of a seat memory controller; S5) estimating occupant weight information according to the seat adjustment data and the borne load; S6) adaptively adjusting the massage airbags in the designated area according to the human back departure line and the occupant weight information; Wherein, the back region includes: a first back region and a second back region, and the first back region is arranged above the second back region; Determining the back departure line of the human body from the seat body and starting the corresponding massage program further includes: S21) inflating the massage airbags in the first back region, and obtaining the inflation flow and pressure of the massage airbags in the first back region versus time; S22) comparing the inflation flow and pressure of the massage airbags in the first back area with the calibration data, if they are less than the calibration data, the back departure line is at or above the first back area, and the first massage program is run, the first massage program is to run the massage airbags in the back area, otherwise, proceed to the next step; S23) inflating the massage airbags in the second back area, and obtaining the inflation flow rate and pressure of the massage airbags in the second back area versus time; S24) Compare the inflation flow and pressure of the massage airbags in the second back area with the calibration data; if they are less than the calibration data, the back departure line is between the first back area and the second back area, and a second massage program is run, and the second massage program is to run the massage airbags in the waist area and the back area; otherwise, the back departure line is below the second back area, and a third massage program is run, and the third massage program is to run the massage airbags in the waist area.

4. The method for recognizing the body shape of an occupant based on a multi-point massage system according to claim 3, It is characterized in that The step S1 of no-load calibration further comprises: S11) obtaining an occupancy detection signal and an engine ignition signal; S12) if there is no occupancy detection signal and engine ignition signal, execute the next step, otherwise execute the previous step; S13) performing an inflation and deflation cycle on the designated area.

5. The method for recognizing the body shape of an occupant based on a multi-point massage system according to claim 3, It is characterized in that The adaptive adjustment further comprises: Adjusting the ejection amount of the massage airbags in the wing area; The ejection amount of the massage airbags in the waist area is adjusted.

6. The method for recognizing the body shape of an occupant based on a multi-point massage system according to claim 5, It is characterized in that The step of adjusting the ejection amount of the massage airbags in the wing area further comprises: Assessing the body shape of the occupant based on the relationship between the back departure line of the human body and the weight information, and adjusting the massage airbags in the wing area; The massage air bags in the wing areas are inflated and deflated until a comfortable theoretical air pressure is reached.

7. The method for recognizing the body shape of an occupant based on a multi-point massage system according to claim 5, It is characterized in that The step of adjusting the ejection amount of the massage airbags in the waist area further comprises: estimating the waist height of a human body based on the human back departure line and the seat adjustment data; The massage air bag in the waist area is inflated and deflated until a comfortable theoretical air pressure is reached.

Images