Capacitance sensing self-adaptive adjusting seat and control method

Abstract

The invention discloses a capacitance sensing self-adaptive adjusting seat which comprises a seat body, the seat body comprises a backrest, a cushion and a headrest, a shoulder module is arranged at the position, close to the shoulder of a passenger, of the backrest, the headrest is installed on the backrest, and the shoulder module and the headrest are driven by a shoulder driving mechanism and a headrest driving mechanism to move; a plurality of capacitance sensing units are arranged in a shoulder module or / and a headrest, the capacitance sensing units detect the positions of the head or / and the shoulders of a passenger and transmit the positions to a processing module, and the processing module combines the actual positions, input by a shoulder driving motor sensor and a headrest driving motor sensor, of the headrest or the shoulders. And an instruction is sent to the shoulder driving mechanism and the headrest driving mechanism to execute up-down or left-right adjustment of the headrest or the shoulder module. The invention further discloses a control method of the seat, and the seat has the following characteristics that 1, the self-capacitance principle is adopted, the structure is simpler, and installation and arrangement are more convenient; and 2, large capacitance change can be generated by slight touch.

Description

Technical Field

[0001] The present invention relates to the technical field of seats, and in particular to a seat control and control method with self-adaptive adjustment of capacitance sensing. Background Art

[0002] The intelligence and comfort of cars are becoming more and more important, and the vehicle seat system has a great impact on the intelligence and comfort of cars. Traditional car seats require people to actively adjust them, and cannot sense the scene and automatically adjust, which is increasingly unable to meet the needs of smart cockpits.

[0003] Based on the intelligent adaptive seat adjustment system of composite sensing technology, the control system can collect sensor feedback at any time. Based on this feedback, the controller can intelligently identify the state of the occupants and automatically generate comfortable and safe actions for the occupants in this state. At the same time, the sensor system can also combine big data training to automatically match the current occupant's body shape, and the software system can customize different action thresholds based on different body shapes. Based on these automated recognitions and actions, a more intelligent and comfortable car cockpit can be achieved. However, the current smart cockpits basically use resistive sensors for pressure detection, which have poor stability and insensitivity. Summary of the invention

[0004] One of the technical problems to be solved by the present invention is to provide a capacitive sensing adaptively adjustable seat with good stability and sensitivity in order to solve the problem of poor stability and insensitivity of resistive sensors used in existing intelligent cockpits.

[0005] The second technical problem to be solved by the present invention is to provide a control method for a seat with adaptive adjustment using capacitive sensing with good stability and sensitivity in order to solve the problem of poor stability and insensitivity of resistive sensors used in existing intelligent cockpits.

[0006] In order to achieve the above-mentioned purpose, the first aspect of the present invention is a capacitive sensing adaptively adjustable seat, comprising a seat, wherein the seat comprises a backrest, a seat cushion and a headrest, wherein a shoulder module is arranged at the backrest near the shoulder position of the occupant, and the headrest is mounted on the backrest, wherein the shoulder module and the headrest are driven to move by their respective shoulder drive mechanisms and headrest drive mechanisms; a plurality of capacitive sensing units are arranged in the shoulder module and / or the headrest, and these capacitive sensing units detect the position of the occupant's head and / or shoulders and transmit them to a processing module, and the processing module combines the actual position of the headrest or shoulder module input by the shoulder drive motor sensor and the headrest drive motor sensor, and sends instructions to the shoulder drive mechanism and the headrest drive mechanism to execute the up and down adjustment or left and right adjustment of the headrest or shoulder module.

[0007] In a preferred embodiment of the present invention, each capacitive sensing unit is connected to the processing module via a wire.

[0008] In a preferred embodiment of the present invention, the capacitive sensing unit adopts a capacitive sensing unit based on the principle of unipolar plate capacitance.

[0009] In a preferred embodiment of the present invention, the capacitive sensing units are arranged in the shoulder and / or headrest in a dot matrix or strip manner.

[0010] In a preferred embodiment of the present invention, the capacitive sensing unit is symmetrically or asymmetrically arranged in the shoulder and / or headrest.

[0011] In a preferred embodiment of the present invention, the capacitive sensing unit is arranged between a cover and foam of the headrest and / or shoulder module.

[0012] In a preferred embodiment of the present invention, the processing module converts the capacitance change value detected by each capacitive sensing unit into pressure distribution information and determines the occupant's headrest position and / or shoulder module position based on the pressure distribution information, and combines the actual position of the headrest and / or shoulder input by the shoulder drive motor sensor and the headrest drive motor sensor to send instructions to the shoulder drive mechanism and the headrest drive mechanism to execute the up, down, left and right adjustment of the headrest and / or shoulder module.

[0013] In a preferred embodiment of the present invention, the shoulder drive motor sensor and the headrest drive motor sensor are used to detect the number of revolutions of the shoulder drive motor in the shoulder drive mechanism and the headrest drive motor in the headrest drive mechanism, respectively. Different numbers of revolutions correspond to different positions of the headrest and the shoulder, and are considered as a percentage of the total stroke.

[0014] In a preferred embodiment of the present invention, the shoulder drive mechanism and the headrest drive mechanism also include a shoulder motion actuator and a headrest motion actuator respectively, the shoulder drive motor drives the shoulder movement through the shoulder motion actuator, and the headrest drive motor drives the headrest movement through the headrest motion actuator; after the shoulder drive motor and the headrest drive motor receive the instructions issued by the processing module, the shoulder drive motor and the headrest drive motor operate according to the instructions, push the shoulder motion actuator and the headrest motion actuator to the instruction position and feedback the current shoulder and headrest position information to the processing module through the shoulder drive motor sensor and the headrest drive motor sensor.

[0015] In a preferred embodiment of the present invention, it also includes an occupant detection SBR system for detecting whether an occupant is sitting on a seat.

[0016] The control method of the seat with adaptive adjustment of capacitance sensing according to the second aspect of the present invention comprises the following steps:

[0017] Step 1: When the occupant is not sitting and the headrest is in the designed position, the processing module collects the reference capacitance value C of each capacitive sensing unit in the headrest. 0 , go to step 2; when the headrest is in the design position, the center point of the headrest corresponds to the stroke percentage of the position of the headrest drive motor;

[0018] Step 2: When the passenger sits on the seat and leans against the headrest, the processing module collects the capacitance value C of each capacitive sensor unit in the headrest 实 And determine whether it is a valid value. When ΔC / C0>threshold, it is determined to be a valid value. When the capacitance change ratio on at least one sensor is determined to be a valid value, then go to step three, otherwise return to step one;

[0019] Step 3: Passenger detection The SBR system determines whether there are passengers. If yes, it goes to step 4, otherwise it returns to step 1;

[0020] Step 4: The processing module analyzes the pressure distribution and determines the location of the pressure center, and then proceeds to step 5;

[0021] Step 5: Determine whether the stroke percentage of the headrest drive motor corresponding to the pressure center position is equal to the stroke percentage of the headrest drive motor corresponding to the center point of the headrest when the headrest is in the design position. If they are equal, proceed to step 6; if they are not equal, proceed to step 7;

[0022] Step 6: The headrest drive mechanism does not move; proceed to step 8;

[0023] Step 7: The headrest drive mechanism moves, and the headrest drive motor operates according to the headrest drive motor stroke percentage of the pressure center position, and then proceeds to step 8;

[0024] Step 8: Determine again whether the stroke percentage of the headrest drive motor position corresponding to the pressure center position is equal to the stroke percentage of the headrest drive motor position corresponding to the center point of the headrest when the headrest is in the design position. If they are equal, return to step 6; if not, return to step 7.

[0025] In a preferred embodiment of the present invention, the design position of the headrest should satisfy that at least a part of the head of 5% of female dummies and 95% of male dummies can rest on the headrest.

[0026] The control method of the seat with adaptive adjustment of capacitance sensing according to the second aspect of the present invention comprises the following steps:

[0027] Step 1: When the occupant is not seated and the shoulder module is in the designed position, the processing module collects the reference capacitance value C of each capacitive sensing unit in the shoulder module. 0, go to step 2; when the shoulder module is in the design position, the departure point of the shoulder module corresponds to the stroke percentage of the position of the shoulder drive motor;

[0028] Step 2: When the passenger sits on the seat and leans on the shoulder module, the processing module collects the capacitance value C of each capacitive sensing unit in the shoulder module. 实 And determine whether it is a valid value. When ΔC / C0>threshold, it is determined to be a valid value. When the capacitance change ratio on at least one sensor is determined to be a valid value, then go to step three, otherwise return to step one;

[0029] Step 3: Passenger detection The SBR system determines whether there are passengers. If yes, it goes to step 4, otherwise it returns to step 1;

[0030] Step 4: The processing module analyzes the pressure distribution and determines the location of the pressure center, and then proceeds to step 5;

[0031] Step 5: Determine whether the stroke percentage of the shoulder drive motor corresponding to the pressure center position is equal to the stroke percentage of the shoulder drive motor when the shoulder module is in the design position. If they are equal, proceed to step 6; if not, proceed to step 7.

[0032] Step 6: The shoulder drive mechanism does not move; proceed to step 8;

[0033] Step 7: The shoulder drive mechanism moves, and the shoulder drive motor operates according to the percentage of the shoulder drive motor stroke at the pressure center position, and then proceeds to step 8;

[0034] Step 8: Determine again whether the stroke percentage of the shoulder drive motor corresponding to the pressure center position is equal to the stroke percentage of the shoulder drive motor corresponding to the shoulder module at the design position. If they are equal, return to step 6; if not, return to step 7.

[0035] In a preferred embodiment of the present invention, the design position of the shoulder module should simultaneously satisfy that at least a portion of the head of 5% of female dummies and 95% of male dummies can rest on the shoulder module.

[0036] Due to the adoption of the above technical solution, the present invention has the following characteristics compared with the seat using the resistive sensor:

[0037] 1. It adopts the principle of self-capacitance, with simpler structure, more convenient installation and layout, and better durability and stability than piezoresistive sensors.

[0038] 2. A slight touch can produce a large change in capacitance, which is more sensitive than piezoresistive sensors. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of assembling the capacitive sensing unit of the present invention.

[0040] Figure 2 The figure is a schematic diagram of the arrangement of a capacitive sensing unit of the present invention.

[0041] Figure 3 It is a schematic diagram of another arrangement of capacitive sensing units of the present invention.

[0042] Figure 4 FIG. 4 is a schematic diagram of another arrangement of capacitive sensing units according to the present invention.

[0043] Figure 5 This is a schematic diagram of the capacitive sensing unit of the present invention being arranged in a headrest.

[0044] Figure 6 This is a control block diagram of embodiment 1 of the present invention.

[0045] Figure 7 This is a schematic diagram of the control flow of Example 1 of the present invention.

[0046] Figure 8 It is a schematic diagram of the capacitive sensing unit of the present invention being arranged in the shoulder.

[0047] Fig. 9 This is a control block diagram of embodiment 2 of the present invention.

[0048] Fig.10 This is a control flow diagram of Example 2 of the present invention. DETAILED DESCRIPTION

[0049] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0050] See also Figure 1 and Figure 2 The eight capacitive sensing units 110 shown in the figure are arranged in a dot matrix, and the two sides of the eight capacitive sensing units 110 are bonded with protective layers 140 and 150 using adhesive layers 120 and 130, and finally form a capacitive sensing module 100. Each capacitive sensing unit 110 adopts a capacitive sensing unit based on the principle of unipolar plate self-capacitance. Each capacitive sensing unit 110 is connected to the processing module through a wire.

[0051] See also Figure 3 The four capacitive sensing units 110a shown in the figure are in strip shape and arranged in a row. Figure 1 and Figure 2 same.

[0052] See also Figure 4The seven capacitive sensing units 110b shown in the figure are in strip shape, among which four capacitive sensing units 110b are arranged in a row, and the remaining three capacitive sensing units 110b are arranged in three rows and overlapped on the four capacitive sensing units 110b. The overlap between the four capacitive sensing units 110b and the three capacitive sensing units 110b is isolated by an insulating layer. The rest of the structure is the same as Figure 1 and Figure 2 same.

[0053] The eight capacitive sensing units 110 , the four capacitive sensing units 110 a and the seven capacitive sensing units 110 b may be arranged in a symmetrical manner or in an asymmetrical manner.

[0054] Example 1

[0055] See also Figures 5 to 7 The capacitive sensing adaptive adjustment seat shown in the figure includes a seat 200, which includes a backrest 210, a seat cushion 220 and a headrest 230. A shoulder module 240 is arranged at the backrest 210 near the shoulder of the occupant, and the headrest 230 is installed on the backrest 210. The shoulder module 240 and the headrest 230 are driven to move by their respective shoulder driving mechanisms 241 and headrest driving mechanisms 231.

[0056] A capacitive sensing unit module 100 is provided in the headrest 230, and the capacitive sensing unit module 100 is arranged between the face cover 232 and the foam 234 of the headrest 230. The capacitive sensing unit 110 or 110a or 110b in the capacitive sensing unit module 100 is arranged in the area on the headrest 230 to meet the requirements of at least a part of the head of 5% of female dummies and 95% of male dummies being detected.

[0057] The capacitive sensing unit 110 or 110a or 110b in the capacitive sensing unit module 100 detects the occupant's head position and transmits it to a processing module 300. The processing module 300 combines the actual position of the headrest input by the headrest drive motor sensor 310 and sends instructions to the headrest drive mechanism 231 to perform up and down adjustment or left and right adjustment of the headrest 230.

[0058] In particular: the processing module 300 converts the capacitance change value detected by each capacitive sensing unit 110 into pressure distribution information and determines the position of the occupant's headrest based on the pressure distribution information, and sends instructions to the headrest drive mechanism 231 to perform up and down adjustment or left and right adjustment of the headrest in combination with the actual position of the headrest 230 input by the headrest drive motor sensor 310.

[0059] The headrest drive motor sensor 310 is used to detect the number of revolutions of the headrest drive motor in the headrest drive mechanism 231 . Different numbers of revolutions correspond to different positions of the headrest, which are considered as a percentage of the total stroke.

[0060] The headrest drive mechanism 231 also includes a headrest motion actuator, and the headrest drive motor drives the headrest 230 to move through the headrest motion actuator; after the headrest drive motor receives the instruction issued by the processing module 300, the headrest drive motor operates according to the instruction, pushes the headrest motion actuator to the instruction position and feeds back the current position information of the headrest 230 to the processing module 300 through the headrest drive motor sensor 310.

[0061] The occupant detection SBR system 400 is used to detect whether an occupant is sitting on a seat.

[0062] The specific workflow is as follows:

[0063] Step 1: When the occupant is not sitting and the headrest 230 is in the designed position, the processing module 300 collects the reference capacitance value C of each capacitive sensing unit 110 in the headrest 230 0 , proceed to step 2; when the headrest 230 is in the design position, the center point of the headrest 230 corresponds to the stroke percentage of the position of the headrest drive motor; the design position of the headrest 230 should simultaneously meet the requirements that at least a part of the head of 5% of the female dummies and 95% of the male dummies can rest on the headrest 230.

[0064] Step 2: When the passenger sits on the seat 200 and leans against the headrest 230, the processing module 300 collects the capacitance value C of each capacitive sensing unit 110 or 110a or 110b in the headrest 230. 实 , calculate the capacitance difference as ΔC 实 =C 0 -C 实 , at this time the capacitance ratio is ΔC / C 0 , when ΔC / C0>threshold, it is judged as a valid value, and when the capacitance change ratio on at least one sensor is judged as a valid value, then go to step three, otherwise return to step one;

[0065] Step 3: Passenger detection The SBR system 400 determines whether there is a passenger. If yes, it proceeds to step 4, otherwise it returns to step 1;

[0066] Step 4: The processing module 300 analyzes the pressure distribution and determines the pressure center position, and then proceeds to step 5;

[0067] Step 5: Determine whether the stroke percentage of the headrest drive motor position corresponding to the pressure center position P1 is equal to the stroke percentage of the headrest drive motor position corresponding to the center point of the headrest when the headrest 230 is at the design position P0. If they are equal, proceed to step 6; if they are not equal, proceed to step 7.

[0068] Step 6: The headrest driving mechanism 231 does not move; proceed to step 8;

[0069] Step 7: The headrest drive mechanism 231 moves, and the headrest drive motor operates according to the headrest drive motor stroke percentage of the pressure center position, and then proceeds to step 8;

[0070] Step 8: Determine again whether the stroke percentage of the headrest drive motor corresponding to the pressure center position P1' is equal to the stroke percentage of the headrest drive motor when the headrest is at the design position P0. If they are equal, return to step 6; if not, return to step 7.

[0071] When two or more capacitive sensing units are arranged on the headrest 230, the center position of the headrest 230 in the design position is confirmed by Table 1. In Table 1, a1, a2, a3, a4, a5, and a6 represent different capacitive sensing units, and the numerical values ​​of a1, a2, a3, a4, a5, and a6 represent the stroke percentage of the headrest drive motor. When the headrest is in the design position, the numerical value of the capacitive sensing unit corresponding to the center position of the headrest (the dotted line in the figure) is equivalent to the stroke percentage of the headrest drive motor at this time. The numerical values ​​of the remaining capacitive sensing units are assigned according to the number and spacing. For example, when the headrest 230 is in the design position, the percentage of the headrest drive motor from bottom to top is 40%.

[0072] Table 1

[0073]

[0074] A matrix table of the pressure distribution positions of two or more capacitive sensing units arranged on the headrest 230 is shown in Table 2. In Table 2, a1, a2, a3, a4, a5, and a6 represent different sensing units, and the numerical values ​​of a1, a2, a3, a4, a5, and a6 represent the stroke percentage of the headrest drive motor. The judgment is based on the fact that there is generally no interference from external pressure sources on the upper part of the headrest, while there are interference sources such as clothing and shoulders on the lower part of the headrest.

[0075] Table 2

[0076]

[0077] The judgment logic matrix table of this embodiment is shown in Table 3

[0078] Table 3

[0079]

[0080] The rest of Example 1 is the same as Figure 1 , Figure 2 , Figure 3 and Figure 4 same.

[0081] Example 2

[0082] See also Figures 8 to 10 The capacitive sensing adaptive adjustment seat shown in the figure includes a seat 200, which includes a backrest 210, a seat cushion 220 and a headrest 230. A shoulder module 240 is arranged at the backrest 210 near the shoulder of the occupant, and the headrest 230 is installed on the backrest 210. The shoulder module 240 and the headrest 230 are driven to move by their respective shoulder driving mechanisms 241 and headrest driving mechanisms 231.

[0083] A capacitive sensing unit module 100 is provided in the shoulder module 240, and the capacitive sensing unit module 100 is arranged between the face cover 242 and the foam 243 of the shoulder module 240. The capacitive sensing unit 110 or 110a or 110b in the capacitive sensing unit module 100 is arranged on the shoulder module 240 in an area that satisfies the requirements that at least a part of the head of 5% of female dummies and 95% of male dummies be detected.

[0084] The capacitive sensing unit 110 or 110a or 110b in the capacitive sensing unit module 100 detects the occupant's head position and transmits it to a processing module 300a. The processing module 300a combines the actual shoulder position input by the shoulder drive motor sensor 310a and sends instructions to the shoulder drive mechanism 241 to execute the up, down, left and right adjustment of the shoulder module 240.

[0085] In particular: the processing module 300a converts the capacitance change value detected by each capacitive sensing unit 110 into pressure distribution information and determines the shoulder position of the occupant based on the pressure distribution information, and combines the actual position of the shoulder module 240 input by the shoulder drive motor sensor 310a to send instructions to the shoulder drive mechanism 241 to perform up, down, left, and right adjustments of the shoulder.

[0086] The shoulder drive motor sensor 310a is used to detect the number of revolutions of the shoulder drive motor in the shoulder drive mechanism 241. Different numbers of revolutions correspond to different positions of the shoulder, which are considered as a percentage of the total stroke.

[0087] The shoulder drive mechanism 241 also includes a shoulder motion actuator, and the shoulder drive motor drives the headrest to move through the shoulder motion actuator; after the shoulder drive motor receives the instruction issued by the processing module 300a, the shoulder drive motor operates according to the instruction, pushes the shoulder motion actuator to the instruction position and feeds back the current position information of the shoulder module 240 to the processing module 300a through the shoulder drive motor sensor 310a.

[0088] The occupant detection SBR system 400 is used to detect whether an occupant is sitting on a seat.

[0089] The specific workflow is as follows:

[0090] Step 1: When the passenger is not seated and the shoulder module 240 is in the design position, the processing module 300a collects the capacitance reference value C of each capacitive sensing unit 110 in the shoulder module 240. 0 , proceed to step 2; when the shoulder module 240 is in the design position, the departure point of the shoulder module 240 corresponds to the stroke percentage of the position of a shoulder drive motor; the design position of the shoulder module 240 should simultaneously meet the requirements that at least a part of the head of 5% of the female dummies and 95% of the male dummies can rest on the headrest 230.

[0091] Step 2: When the passenger sits on the seat 200 and leans on the shoulder module 240, the processing module 300a collects the capacitance value C of each capacitive sensing unit 110 or 110a or 110b in the shoulder module 240. 实 Calculate the capacitance difference as ΔC 实 =C 0 -C 实 , at this time the capacitance ratio is ΔC / C 0 , when ΔC / C0>threshold value, it is judged as a valid value, and when the capacitance change ratio on at least one sensor is judged as a valid value, then go to step three, otherwise return to step one;

[0092] Step 3: Passenger detection The SBR system 400 determines whether there is a passenger. If yes, it proceeds to step 4, otherwise it returns to step 1;

[0093] Step 4: The processing module 300a analyzes the pressure distribution and determines the pressure center position, and then proceeds to step 5;

[0094] Step 5: Determine whether the stroke percentage of the shoulder drive motor position corresponding to the pressure center position P1' is equal to the stroke percentage of the shoulder drive motor position when the shoulder is at the design position P0'. If they are equal, proceed to step 6; if not, proceed to step 7;

[0095] Step 6: The shoulder driving mechanism 241 does not move; proceed to step 8;

[0096] Step 7: The shoulder drive mechanism 241 moves, and the shoulder drive motor operates according to the percentage of the shoulder drive motor stroke at the position of the pressure center, and then proceeds to step 8;

[0097] Step 8: Determine again whether the percentage of the shoulder drive motor corresponding to the pressure center position P1" is equal to the stroke percentage of the shoulder drive motor corresponding to the position of the shoulder module 240 at the design position P0'. If they are equal, return to step 6; if not, return to step 7.

[0098] When the shoulder is arranged with two or more capacitive sensing units, the shoulder departure point position is confirmed by Table 4, a1, a2, a3, a4, a5, a6 represent different capacitive sensing units, and the numerical values ​​of a1, a2, a3, a4, a5, a6 represent the stroke percentage of the shoulder drive motor position. When the backrest is in the design position, the numerical value of the sensing unit corresponding to the shoulder departure point position (dashed line in the figure) is equivalent to the stroke percentage of the shoulder drive motor at this time, and the numerical values ​​of the remaining capacitive sensing units are assigned according to the number and spacing. For example: When the shoulder is in the design position, the stroke percentage of the shoulder drive motor from bottom to top is 40%

[0099] Table 4

[0100]

[0101] When two or more sensing units are arranged on the shoulder of the backrest, the matrix table of the pressure position is shown in Table 5. In Table 5, a1, a2, a3, a4, a5, and a6 in Table 5 represent different capacitive sensing units, and the values ​​of a1, a2, a3, a4, a5, and a6 represent the stroke percentage of the shoulder drive motor. The shoulder pressure position is actually the shoulder departure position, so the judgment basis is the highest point.

[0102] Table 5

[0103]

[0104] The judgment logic matrix table of this embodiment is shown in Table 6.

[0105] Table 6

[0106]

Claims

1. A capacitive sensing adaptive seat, comprising a backrest, a seat cushion and a headrest, wherein a shoulder module is arranged at the backrest near the shoulder of the occupant, and the headrest is mounted on the backrest, wherein the shoulder module and the headrest are driven to move by their respective shoulder drive mechanisms and headrest drive mechanisms; characterized in that: A plurality of capacitive sensing units are arranged in the shoulder module and / or the headrest, and these capacitive sensing units detect the position of the occupant's head and / or shoulder and transmit the position to a processing module. The processing module combines the actual position of the headrest or shoulder module input by the shoulder drive motor sensor and the headrest drive motor sensor, and sends instructions to the shoulder drive mechanism and the headrest drive mechanism to perform up and down adjustment or left and right adjustment of the headrest or shoulder module.

2. A capacitive sensing adaptive seat according to claim 1, characterized in that: Each capacitive sensing unit is connected to the processing module via a wire.

3. The capacitive sensing adaptive seat according to claim 1, characterized in that: The capacitive sensing unit adopts a capacitive sensing unit based on the principle of single-pole self-capacitance.

4. The capacitive sensing adaptive seat according to claim 1, characterized in that: The capacitive sensing units are arranged in a dot matrix or strip manner in the shoulder module and / or the headrest.

5. The capacitive sensing adaptive seat according to claim 1, characterized in that: The capacitive sensing unit is symmetrically or asymmetrically arranged in the shoulder module and / or the headrest.

6. The capacitive sensing adaptive seat according to claim 1, characterized in that: The capacitive sensor unit is arranged between a cover and foam of the headrest and / or the shoulder module.

7. A capacitive sensing adaptive seat according to any one of claims 1 to 6, characterized in that: The processing module converts the capacitance change value detected by each capacitive sensing unit into pressure distribution information and determines the occupant's headrest position and / or shoulder module position based on the pressure distribution information, and sends instructions to the shoulder drive mechanism and the headrest drive mechanism to perform up and down adjustment or left and right adjustment of the headrest and / or shoulder module in combination with the actual position of the headrest and / or shoulder input by the shoulder drive motor sensor and the headrest drive motor sensor.

8. The capacitive sensing adaptive seat according to claim 7, characterized in that: The shoulder drive motor sensor and the headrest drive motor sensor are used to detect the number of revolutions of the shoulder drive motor in the shoulder drive mechanism and the headrest drive motor in the headrest drive mechanism respectively. Different numbers of revolutions correspond to different positions of the headrest and shoulder modules, and are expressed as a percentage of the total stroke.

9. The capacitive sensing adaptive seat according to claim 8, characterized in that: The shoulder drive mechanism and the headrest drive mechanism also include a shoulder motion actuator and a headrest motion actuator respectively, the shoulder drive motor drives the shoulder module to move through the shoulder motion actuator, and the headrest drive motor drives the headrest to move through the headrest motion actuator; After the shoulder drive motor and the headrest drive motor receive the instructions sent by the processing module, the shoulder drive motor and the headrest drive motor operate according to the instructions, push the shoulder motion actuator and the headrest motion actuator to reach the command position, and feed back the current shoulder and headrest position information to the processing module through the shoulder drive motor sensor and the headrest drive motor sensor.

10. The capacitive sensing adaptive seat according to claim 9, characterized in that: It also includes an occupant detection SBR system for detecting whether an occupant is sitting in a seat.

11. The control method of a capacitive sensing adaptively adjustable seat according to any one of claims 1 to 10, characterized in that: The steps include: Step 1: When the occupant is not sitting and the headrest is in the design position, the processing module collects the reference capacitance value C0 of each capacitive sensing unit in the headrest, and enters step 2; when the headrest is in the design position, the center point of the headrest corresponds to a stroke percentage of the position of the headrest drive motor; Step 2: When the passenger sits on the seat and leans against the headrest, the processing module collects the capacitance value C of each capacitive sensor unit in the headrest 实 , calculate the capacitance difference as ΔC 实 =C0-C 实 , at this time, the capacitance change ratio is ΔC / C0. When ΔC / C0>threshold, it is judged as a valid value. When the capacitance change ratio on at least one sensor is judged as a valid value, step three is entered, otherwise, step one is returned. Step 3: The occupant detection SBR system determines whether there is an occupant. If yes, it proceeds to step 4, otherwise it returns to step 1; Step 4: The processing module analyzes the pressure distribution and determines the pressure center position, and then proceeds to step 5; Step 5: Determine whether the stroke percentage of the headrest drive motor corresponding to the pressure center position is equal to the stroke percentage of the headrest drive motor corresponding to the center point of the headrest when the headrest is in the design position. If they are equal, proceed to step 6; if they are not equal, proceed to step 7; Step 6: The headrest drive mechanism does not move; Go to step eight; Step 7: The headrest drive mechanism moves, and the headrest drive motor operates according to the headrest drive motor stroke percentage of the pressure center position, and then proceeds to step 8; Step 8: Determine again whether the stroke percentage of the headrest drive motor position corresponding to the pressure center position is equal to the stroke percentage of the headrest drive motor position corresponding to the center point of the headrest when the headrest is in the design position. If they are equal, return to step 6. If they are not equal, return to step 7.

12. The control method according to claim 11, characterized in that: The design position of the headrest should satisfy that at least a part of the head of 5% of the female dummies and 95% of the male dummies can rest on the headrest.

13. The control method of a capacitive sensing adaptively adjustable seat according to any one of claims 1 to 10, characterized in that: The steps include: Step 1: When the passenger is not sitting and the shoulder module is in the design position, the processing module collects the reference capacitance value C0 of each capacitance sensing unit in the shoulder module and enters step 2; when the shoulder module is in the design position, the departure point of the shoulder module corresponds to the stroke percentage of the position of a shoulder drive motor; Step 2: When the occupant sits on the seat and leans against the shoulder module, the processing module collects the capacitance value C of each capacitive sensing unit in the shoulder module. 实 , calculate the capacitance difference as ΔC 实 =C0-C 实 , at this time, the capacitance ratio is ΔC / C0. When ΔC / C0>threshold, it is judged as a valid value. When the capacitance change ratio on at least one sensor is judged as a valid value, step three is entered, otherwise, step one is returned. Step 3: Passenger detection The SBR system determines whether there are passengers. If yes, it goes to step 4, otherwise it returns to step 1; Step 4: The processing module analyzes the pressure distribution and determines the location of the pressure center, and then proceeds to step 5; Step 5: Determine whether the stroke percentage of the shoulder drive motor position corresponding to the pressure center position is equal to the stroke percentage of the shoulder drive motor position when the shoulder module is in the design position. If they are equal, proceed to step 6; if not, proceed to step 7. Step 6: The shoulder drive mechanism does not move; Go to step eight; Step 7: The shoulder drive mechanism moves, and the shoulder drive motor operates according to the percentage of the shoulder drive motor stroke at the position of the pressure center, and then proceeds to step 8; Step 8: Determine again whether the percentage of the shoulder drive motor corresponding to the pressure center position is equal to the stroke percentage of the shoulder drive motor corresponding to the shoulder module at the design position. If they are equal, return to step 6. If they are not equal, return to step 7.

14. The control method according to claim 13, characterized in that: The design position of the shoulder module should satisfy that at least part of the heads of 5% of the female dummies and 95% of the male dummies can rest on the shoulder module.

Images