阅读说明：本技术 一种基于复合传感的自适应座椅调节系统 (Self-adaptive seat adjusting system based on composite sensing ) 是由 吕洋 于 2021-08-24 设计创作，主要内容包括：本发明涉及座椅系统技术领域,具体的说是一种基于复合传感的自适应座椅调节系统。一种基于复合传感的自适应座椅调节系统,在汽车座椅上设有座椅舒适性调节模块,座椅舒适性调节模块分别通过加热驱动模块、电机驱动模块、阀驱动模块与MCU控制模块连接,MCU控制模块与通讯模块连接；所述的座椅舒适性调节模块内设有若干传感器,电容传感器、电流传感器、湿度传感器、温度传感器、健康传感器通过传感器监控模块与MCU控制模块连接。同现有技术相比,控制系统通过读取复合传感器的值,实时评估乘员状态并合理调整泵的充气、放气,座椅电机正转、反转,加热,通风,疲劳度监测提醒及按摩启动。(The invention relates to the technical field of seat systems, in particular to a self-adaptive seat adjusting system based on composite sensing. A self-adaptive seat adjusting system based on composite sensing is characterized in that a seat comfort adjusting module is arranged on an automobile seat and is respectively connected with an MCU control module through a heating driving module, a motor driving module and a valve driving module, and the MCU control module is connected with a communication module; the seat comfort adjusting module is internally provided with a plurality of sensors, and the capacitive sensor, the current sensor, the humidity sensor, the temperature sensor and the health sensor are connected with the MCU control module through the sensor monitoring module. Compared with the prior art, the control system evaluates the state of the passengers in real time and reasonably adjusts the inflation and deflation of the pump, the seat motor rotates forwards and backwards, and the seat motor is heated, ventilated, fatigue monitoring, reminding and massage starting by reading the value of the composite sensor.)

1. The utility model provides a self-adaptation seat governing system based on compound sensing, includes communication module, MCU control module, sensor monitoring module, heating drive module, motor drive module, valve drive module, seat travelling comfort adjusting module, power management module, its characterized in that: the vehicle seat is provided with a seat comfort adjusting module, the seat comfort adjusting module is connected with the MCU control module through the heating driving module, the motor driving module and the valve driving module respectively, and the MCU control module is connected with the communication module; the seat comfort adjusting module is internally provided with a plurality of sensors, the plurality of sensors comprise a capacitance sensor, a current sensor, a humidity sensor, a temperature sensor and a health sensor, and the capacitance sensor, the current sensor, the humidity sensor, the temperature sensor and the health sensor are connected with the MCU control module through the sensor monitoring module; the power management module respectively provides power for the communication module, the MCU control module, the sensor monitoring module, the heating driving module, the motor driving module, the valve driving module and the seat comfort adjusting module.

2. The adaptive seat adjustment system based on compound sensing of claim 1, wherein: the specific working process is as follows:

s1: monitoring the state of the seat in real time by a capacitance sensor, a current sensor, a humidity sensor, a temperature sensor and a health sensor on the seat, and transmitting the data to an MCU control module through a sensor monitoring module;

s2: the MCU control module carries out comprehensive evaluation and processing according to the data of the plurality of sensors in the step S1, and sends processing information to the heating driving module, the motor driving module and the valve driving module respectively;

s3: the heating driving module, the motor driving module and the valve driving module control the seat comfort adjusting module to perform corresponding adjustment work after receiving the instruction sent by the MCU control module.

3. A compound sensing based adaptive seat adjustment system according to claim 1 or 2, characterized in that: the comprehensive evaluation and processing of the MCU control module comprise leg support, leg side wings and headrest adjustment; massage adjustment; comprehensively evaluating the interaction state of the passengers and the seats; adjusting the position of the seat; seat ventilation evaluation; seat heating evaluation; and (4) evaluating the health of the human body.

4. The adaptive seat adjustment system based on compound sensing of claim 3, wherein: the specific method for adjusting the leg support, the leg side wings and the headrest comprises the following steps:

(11) collecting capacitance values of capacitive sensors at the positions of a leg support, a leg side wing and a headrest on the seat, and sending the data to an MCU control module through a sensor monitoring module;

(12) the evaluation module is used for evaluating the states of the passengers and the seats;

(13) judging whether a person is on the seat, and if so, emptying the air bag;

(14) judging whether the seat state is from an unmanned state to a manned state, if so, starting human body shape assessment, finding out a capacitance threshold value of the corresponding body shape under the fitness grade from a calibration database according to the fitness grade requirement of the human body, and controlling the air bag to start inflation; otherwise, judging whether the calibration threshold value is reached;

(15) judging whether the air bag reaches a calibration threshold value, if so, stopping the inflation of the air bag; and otherwise, restarting the capacitance sensor to acquire the capacitance value.

5. The adaptive seat adjustment system based on compound sensing of claim 3, wherein: the specific method for massage adjustment is as follows:

(21) collecting the capacitance value of a capacitance sensor on the seat, and sending the data to an MCU control module through a sensor monitoring module;

(22) the MCU control module judges whether a person is on the seat, if so, the human body size is evaluated for the first time, and the inflation and deflation threshold values corresponding to the evaluation result are obtained; otherwise, controlling the air bag to deflate;

(23) calculating the body type of the human body for the first time, and calculating corresponding values of the charge and discharge valves according to the calculation result;

(24) judging whether a massage request is received or not, if so, judging whether the inflation threshold value of the air bag of any channel is less than or equal to a calibration threshold value or not; otherwise, controlling the air bag to deflate;

(25) judging whether the inflation threshold value of the air bag of any channel is smaller than or equal to the threshold value, if so, controlling the air bag to stop deflating and start inflating, and acquiring a capacitance value by a capacitance sensor; otherwise, continuously judging whether the inflation threshold value of the air bag of any channel is larger than or equal to the calibration threshold value;

(26) continuously judging whether the inflation threshold value of the air bag of any channel is larger than or equal to the calibration threshold value, if so, controlling the air bag to stop inflating and start deflating, and acquiring a capacitance value by a capacitance sensor; and otherwise, restarting the capacitance sensor to acquire the capacitance value.

6. The adaptive seat adjustment system based on compound sensing of claim 3, wherein: the specific method for comprehensively evaluating the interaction state of the passenger and the seat comprises the following steps:

(31) collecting the capacitance value of a capacitance sensor on the seat, and sending the data to an MCU control module through a sensor monitoring module;

(32) the MCU control module judges whether a human-seat interaction evaluation condition is met or not, and if yes, the interaction state of the passenger and the seat is evaluated; otherwise, judging whether the human body evaluation condition is met;

(33) evaluating the interaction state of the passenger and the seat;

(34) judging whether human body evaluation conditions are met, and if so, carrying out human body shape evaluation; otherwise, judging whether a distance evaluation condition between the passenger and the seat is met;

(35) evaluating the body type of the human body;

(36) judging whether a distance evaluation condition between the passenger and the seat is met, if so, evaluating the distance between the head of the passenger and the roof and the distance between the feet of the passenger and a brake pedal; otherwise, ending the work;

(37) the distance between the head of the passenger and the roof of the vehicle and the distance between the feet of the passenger and the brake pedal are evaluated.

7. The adaptive seat adjustment system based on compound sensing of claim 6, wherein: the specific method for evaluating the human body type is as follows:

(351) selecting testers with different body types, respectively collecting capacitance values of a headrest part, a waist flank, a back, a leg flank, a hip part and a leg support under different environments, and then classifying;

(352) selecting different body type testers, and testing capacitance values and pressure values under different levels of fitting degrees;

(353) and writing the capacitance values corresponding to people with different body types under different levels of fitting degrees into a program as calibration data.

8. The adaptive seat adjustment system based on compound sensing of claim 6, wherein: the principle of the condition evaluation through human-seat interaction is as follows: when the occupant is not in the seat, all capacitive sensors should read values close to 0; when an occupant sits on the seat, the values of different areas of the seat show difference according to the different postures of the occupant; when the position of the passenger on the seat changes, the capacitance value of the relevant area changes, and the software can well judge the approximate action direction of the passenger according to the changes.

9. The adaptive seat adjustment system based on compound sensing of claim 6, wherein: the specific method for evaluating the condition of the distance between the passenger and the seat is as follows:

(361) selecting testers with different body types, and collecting capacitance values under different environments;

(362) selecting testers with different body types, adjusting the seat positions to test the capacitance values at different distances, wherein the capacitance values comprise head and roof, foot and brake pedal, seat angle and seat headrest position grade;

(363) and the capacitance values corresponding to people with different body types under different distance levels are used as calibration data to be written into the program.

10. The adaptive seat adjustment system based on compound sensing of claim 3, wherein: the specific method for adjusting the seat position comprises the following steps:

(41) collecting capacitance values of capacitive sensors near a seat, a steering wheel, a car roof and a brake pedal, and sending data to an MCU control module through a sensor monitoring module;

(42) the MCU control module evaluates the human body type according to the acquired capacitance value;

(43) calling out capacitance limit values corresponding to the angle, the front and rear positions and the upper and lower positions of a seat corresponding to the body type from a calibration database through the body type of the human body;

(44) adjusting the front and back positions of the seat until reaching the limited capacitance value;

(45) adjusting the angular position of the seat until reaching its defined capacitance value;

(46) adjusting the up-down position of the seat until reaching the limited capacitance value;

(47) adjusting the up-down position of the seat headrest until reaching the limited capacitance value;

(48) and (6) ending.

11. The adaptive seat adjustment system based on compound sensing of claim 3, wherein: the specific method for regulating the ventilation of the seat comprises the following steps:

(51) after the temperature sensor and the humidity sensor on the seat respectively collect temperature and humidity data, the data are sent to the MCU control module through the sensor monitoring module;

(52) the MCU control module judges whether the temperature of a seat or the humidity in the vehicle or the temperature of a human body reaches a limit value or whether a driver is in fatigue driving, and if so, the fan motor is started; otherwise, the fan motor is turned off;

(53) the MCU control module starts the fan through the motor driving module;

(54) and (6) ending.

12. The adaptive seat adjustment system based on compound sensing of claim 3, wherein: the specific method for evaluating the heating of the seat is as follows:

(61) after the temperature sensor on the seat collects temperature data, the data is sent to the MCU control module through the sensor monitoring module;

(62) the MCU control module judges whether the capacitive sensor is in a data acquisition stage, if so, the data acquisition is finished; otherwise, judging whether the temperature reaches the target temperature value;

(63) judging whether the temperature reaches a target temperature value, if so, stopping heating; otherwise, different PWM is used for controlling the heating wires of all the areas on the seat to perform heating action;

(64) the MCU control module starts the heating wire processing action through the heating driving module;

(65) and (6) ending.

13. The adaptive seat adjustment system based on compound sensing of claim 3, wherein: the specific method for evaluating the human health comprises the following steps:

(71) the health sensor on the seat acquires signals and transmits the data to the MCU control module through the sensor monitoring module;

(72) the MCU control module judges whether the health information of the passenger requested by the outside is received or not, and if so, the MCU control module sends the health information to the vehicle-mounted bus; otherwise, continuously judging whether fatigue driving state information of the passengers is received;

(73) sending health information to a vehicle-mounted bus;

(74) judging whether fatigue driving state information of passengers is received or not, if so, starting massage state evaluation work, seat ventilation evaluation work and automobile side wing reminding work; otherwise, ending;

(75) the MCU control module starts the massage state evaluation work;

(76) the MCU control module starts the ventilation evaluation work of the seat;

(77) the MCU control module starts the automobile side wing to remind work;

(78) and (6) ending.

Technical Field

The invention relates to the technical field of seat systems, in particular to a self-adaptive seat adjusting system based on composite sensing.

Background

Currently, the intelligence and comfort of automobiles are more and more important, and the intelligence and comfort of automobiles are influenced to a great extent by vehicle seat systems. Traditional car seat needs people to go to adjust voluntarily, can't perceive scene automatically regulated, and the demand that can't satisfy intelligent passenger cabin more and more.

According to the intelligent self-adaptive seat adjusting system based on the composite sensing technology, the control system can acquire feedback of the sensor at any time, and based on the feedback, the controller can intelligently identify the state of a passenger and automatically generate comfortable and safe actions of the passenger in the state. Meanwhile, the sensor system can also be combined with big data training to automatically match the body type of the current passenger, and the software system can customize different action thresholds based on different body types. Based on these automated identifications and actions, a more intelligent and comfortable vehicle cabin can be facilitated.

Disclosure of Invention

The invention provides a self-adaptive seat adjusting system based on composite sensing, which overcomes the defects of the prior art, and a control system evaluates the state of a passenger in real time and reasonably adjusts the inflation and deflation of a pump, the forward rotation and the reverse rotation of a seat motor, heating, ventilation, fatigue monitoring, reminding and massage starting by reading the value of a composite sensor.

For realizing above-mentioned purpose, design a self-adaptation seat governing system based on compound sensing, including communication module, MCU control module, sensor monitoring module, heating drive module, motor drive module, valve drive module, seat travelling comfort adjusting module, power management module, its characterized in that: the vehicle seat is provided with a seat comfort adjusting module, the seat comfort adjusting module is connected with the MCU control module through the heating driving module, the motor driving module and the valve driving module respectively, and the MCU control module is connected with the communication module; the seat comfort adjusting module is internally provided with a plurality of sensors, the plurality of sensors comprise a capacitance sensor, a current sensor, a humidity sensor, a temperature sensor and a health sensor, and the capacitance sensor, the current sensor, the humidity sensor, the temperature sensor and the health sensor are connected with the MCU control module through the sensor monitoring module; the power management module respectively provides power for the communication module, the MCU control module, the sensor monitoring module, the heating driving module, the motor driving module, the valve driving module and the seat comfort adjusting module.

The specific working process is as follows:

s1: monitoring the state of the seat in real time by a capacitance sensor, a current sensor, a humidity sensor, a temperature sensor and a health sensor on the seat, and transmitting the data to an MCU control module through a sensor monitoring module;

s2: the MCU control module carries out comprehensive evaluation and processing according to the data of the plurality of sensors in the step S1, and sends processing information to the heating driving module, the motor driving module and the valve driving module respectively;

s3: the heating driving module, the motor driving module and the valve driving module control the seat comfort adjusting module to perform corresponding adjustment work after receiving the instruction sent by the MCU control module.

The comprehensive evaluation and processing of the MCU control module comprise leg support, leg side wings and headrest adjustment; massage adjustment; comprehensively evaluating the interaction state of the passengers and the seats; adjusting the position of the seat; seat ventilation evaluation; seat heating evaluation; and (4) evaluating the health of the human body.

The specific method for adjusting the leg support, the leg side wings and the headrest comprises the following steps:

(11) collecting capacitance values of capacitive sensors at the positions of a leg support, a leg side wing and a headrest on the seat, and sending the data to an MCU control module through a sensor monitoring module;

(12) the evaluation module is used for evaluating the states of the passengers and the seats;

(13) judging whether a person is on the seat, and if so, emptying the air bag;

(14) judging whether the seat state is from an unmanned state to a manned state, if so, starting human body shape assessment, finding out a capacitance threshold value of the corresponding body shape under the fitness grade from a calibration database according to the fitness grade requirement of the human body, and controlling the air bag to start inflation; otherwise, judging whether the calibration threshold value is reached;

(15) judging whether the air bag reaches a calibration threshold value, if so, stopping the inflation of the air bag; and otherwise, restarting the capacitance sensor to acquire the capacitance value.

The specific method for massage adjustment is as follows:

(21) collecting the capacitance value of a capacitance sensor on the seat, and sending the data to an MCU control module through a sensor monitoring module;

(22) the MCU control module judges whether a person is on the seat, if so, the human body size is evaluated for the first time, and the inflation and deflation threshold values corresponding to the evaluation result are obtained; otherwise, controlling the air bag to deflate;

(23) calculating the body type of the human body for the first time, and calculating corresponding values of the charge and discharge valves according to the calculation result;

(24) judging whether a massage request is received or not, if so, judging whether the inflation threshold value of the air bag of any channel is less than or equal to a calibration threshold value or not; otherwise, controlling the air bag to deflate;

(25) judging whether the inflation threshold value of the air bag of any channel is smaller than or equal to the threshold value, if so, controlling the air bag to stop deflating and start inflating, and acquiring a capacitance value by a capacitance sensor; otherwise, continuously judging whether the inflation threshold value of the air bag of any channel is larger than or equal to the calibration threshold value;

(26) continuously judging whether the inflation threshold value of the air bag of any channel is larger than or equal to the calibration threshold value, if so, controlling the air bag to stop inflating and start deflating, and acquiring a capacitance value by a capacitance sensor; and otherwise, restarting the capacitance sensor to acquire the capacitance value.

The specific method for comprehensively evaluating the interaction state of the passenger and the seat comprises the following steps:

(31) collecting the capacitance value of a capacitance sensor on the seat, and sending the data to an MCU control module through a sensor monitoring module;

(32) the MCU control module judges whether a human-seat interaction evaluation condition is met or not, and if yes, the interaction state of the passenger and the seat is evaluated; otherwise, judging whether the human body evaluation condition is met;

(33) evaluating the interaction state of the passenger and the seat;

(34) judging whether human body evaluation conditions are met, and if so, carrying out human body shape evaluation; otherwise, judging whether a distance evaluation condition between the passenger and the seat is met;

(35) evaluating the body type of the human body;

(36) judging whether a distance evaluation condition between the passenger and the seat is met, if so, evaluating the distance between the head of the passenger and the roof and the distance between the feet of the passenger and a brake pedal; otherwise, ending the work;

(37) the distance between the head of the passenger and the roof of the vehicle and the distance between the feet of the passenger and the brake pedal are evaluated.

The specific method for evaluating the human body type is as follows:

(351) selecting testers with different body types, respectively collecting capacitance values of a headrest part, a waist flank, a back, a leg flank, a hip part and a leg support under different environments, and then classifying;

(352) selecting different body type testers, and testing capacitance values and pressure values under different levels of fitting degrees;

(353) and writing the capacitance values corresponding to people with different body types under different levels of fitting degrees into a program as calibration data.

The principle of the condition evaluation through human-seat interaction is as follows: when the occupant is not in the seat, all capacitive sensors should read values close to 0; when an occupant sits on the seat, the values of different areas of the seat show difference according to the different postures of the occupant; when the position of the passenger on the seat changes, the capacitance value of the relevant area changes, and the software can well judge the approximate action direction of the passenger according to the changes.

The specific method for evaluating the condition of the distance between the passenger and the seat is as follows:

(361) selecting testers with different body types, and collecting capacitance values under different environments;

(362) selecting testers with different body types, adjusting the seat positions to test the capacitance values at different distances, wherein the capacitance values comprise head and roof, foot and brake pedal, seat angle and seat headrest position grade;

(363) and the capacitance values corresponding to people with different body types under different distance levels are used as calibration data to be written into the program.

The specific method for adjusting the seat position comprises the following steps:

(41) collecting capacitance values of capacitive sensors near a seat, a steering wheel, a car roof and a brake pedal, and sending data to an MCU control module through a sensor monitoring module;

(42) the MCU control module evaluates the human body type according to the acquired capacitance value;

(43) calling out capacitance limit values corresponding to the angle, the front and rear positions and the upper and lower positions of a seat corresponding to the body type from a calibration database through the body type of the human body;

(44) adjusting the front and back positions of the seat until reaching the limited capacitance value;

(45) adjusting the angular position of the seat until reaching its defined capacitance value;

(46) adjusting the up-down position of the seat until reaching the limited capacitance value;

(47) adjusting the up-down position of the seat headrest until reaching the limited capacitance value;

(48) and (6) ending.

The specific method for regulating the ventilation of the seat comprises the following steps:

(51) after the temperature sensor and the humidity sensor on the seat respectively collect temperature and humidity data, the data are sent to the MCU control module through the sensor monitoring module;

(52) the MCU control module judges whether the temperature of a seat or the humidity in the vehicle or the temperature of a human body reaches a limit value or whether a driver is in fatigue driving, and if so, the fan motor is started; otherwise, the fan motor is turned off;

(53) the MCU control module starts the fan through the motor driving module;

(54) and (6) ending.

The specific method for evaluating the heating of the seat is as follows:

(61) after the temperature sensor on the seat collects temperature data, the data is sent to the MCU control module through the sensor monitoring module;

(62) the MCU control module judges whether the capacitive sensor is in a data acquisition stage, if so, the data acquisition is finished; otherwise, judging whether the temperature reaches the target temperature value;

(63) judging whether the temperature reaches a target temperature value, if so, stopping heating; otherwise, different PWM is used for controlling the heating wires of all the areas on the seat to perform heating action;

(64) the MCU control module starts the heating wire processing action through the heating driving module;

(65) and (6) ending.

The specific method for evaluating the human health comprises the following steps:

(71) the health sensor on the seat acquires signals and transmits the data to the MCU control module through the sensor monitoring module;

(72) the MCU control module judges whether the health information of the passenger requested by the outside is received or not, and if so, the MCU control module sends the health information to the vehicle-mounted bus; otherwise, continuously judging whether fatigue driving state information of the passengers is received;

(73) sending health information to a vehicle-mounted bus;

(74) judging whether fatigue driving state information of passengers is received or not, if so, starting massage state evaluation work, seat ventilation evaluation work and automobile side wing reminding work; otherwise, ending;

(75) the MCU control module starts the massage state evaluation work;

(76) the MCU control module starts the ventilation evaluation work of the seat;

(77) the MCU control module starts the automobile side wing to remind work;

(78) and (6) ending.

Compared with the prior art, the invention provides the self-adaptive seat adjusting system based on the composite sensor, the control system evaluates the state of the passengers in real time and reasonably adjusts the inflation and deflation of the pump, the forward rotation and the reverse rotation of the seat motor, the heating, the ventilation, the fatigue monitoring and reminding and the massage starting by reading the value of the composite sensor.

Drawings

FIG. 1 is a schematic diagram of the system framework of the present invention.

FIG. 2 is a software functional framework diagram of the present invention.

Fig. 3 is a flow chart of leg rest, leg flap, headrest adjustment.

Fig. 4 is a flow chart of massage adjustment.

Fig. 5 is a schematic diagram of different states of a massage request.

FIG. 6 is a flow chart of the evaluation module operation.

Fig. 7 is a flow chart of seat position adjustment.

Fig. 8 is a diagram of a seat position adjustment capacitive area arrangement.

Fig. 9 is a flow chart of seat ventilation adjustment.

Fig. 10 is a flow chart of seat heating evaluation.

FIG. 11 is a flow chart of a human health assessment.

Fig. 12 is a diagram of basic connections for capacitance measurement.

Fig. 13 is another schematic structure of the capacitive sensor.

Fig. 14 is a schematic layout of a capacitive sensor on a seat.

Detailed Description

The invention is further illustrated below with reference to the accompanying drawings.

As shown in fig. 1, a seat comfort adjusting module is arranged on an automobile seat, and is connected with an MCU control module through a heating driving module, a motor driving module and a valve driving module, respectively, and the MCU control module is connected with a communication module; the seat comfort adjusting module is internally provided with a plurality of sensors, the plurality of sensors comprise a capacitance sensor, a current sensor, a humidity sensor, a temperature sensor and a health sensor, and the capacitance sensor, the current sensor, the humidity sensor, the temperature sensor and the health sensor are connected with the MCU control module through the sensor monitoring module; the power management module respectively provides power for the communication module, the MCU control module, the sensor monitoring module, the heating driving module, the motor driving module, the valve driving module and the seat comfort adjusting module.

The system can utilize valve drive module, motor drive module, heating drive module to realize the comfortable support of human body of seat on the one hand, and the massage, seat position control, functions such as seat heating ventilation, and the integration technique that on the other hand system can utilize the sensor realizes the intelligent control of these functions, and the sensor integration technique can make the control accuracy of system promote simultaneously, and the stability of system is higher.

Based on data fusion of the sensor, many application scenes can be unlocked, intelligent actions of the seat in the application scenes are achieved, and the requirements of the market on an intelligent cabin are met.

The capacitive sensor can provide the system with the detection of the degree of adhesion between the occupant and the airbag, the detection of the occupant's body type, the interaction state between the occupant and the seat, the detection of the seat distance, etc.

As shown in fig. 12, the capacitive sensor 3 may be disposed on a seat or other suitable area of the vehicle body as required, and the capacitive sensor 3 is connected to the monitoring circuit 1 through the shielded wire 2 to form a capacitance measurement circuit.

The capacitance detection circuit is a conventional circuit, namely a main controller MCU can read the multichannel capacitance value of the capacitance detection circuit through IIC, SPI bus or AD mode, and the capacitance detection circuit can be completed by a conventional multichannel high-speed capacitance digital converter chip, a special application integrated circuit or an analog circuit.

As shown in fig. 13, the capacitive sensor is composed of a sensing layer, an intermediate isolation layer and a shielding layer, wherein the sensing layer may be a resistance wire with a customized shape, a conductive cloth with a customized shape, a flexible conductive metal, or the like. The middle isolation layer is made of flame-retardant foam and mainly prevents the sensing layer from contacting with the shielding layer. The shielding layer is made of shielding materials and mainly plays a role in shielding interference. And the capacitive sensor is arranged on the surface A of the seat foam and is at the same position as the traditional automobile heating wire.

As shown in fig. 14, the arrangement of the capacitive sensors on the seat is distributed, and a headrest capacitive sensor e is arranged on the headrest; a waist right side wing capacitive sensor 1a, a waist lower capacitive sensor b, a waist middle capacitive sensor c, a waist upper capacitive sensor d and a waist left side wing capacitive sensor 2a are respectively arranged on the backrest; a leg right side wing capacitive sensor 1f, a leg support right capacitive sensor 1g, a leg support left capacitive sensor 2g, a cushion lower capacitive sensor h, a cushion upper capacitive sensor i and a leg left side wing capacitive sensor 2f are respectively arranged on the seat.

As shown in fig. 8, a capacitive sensor arrangement in which position adjustment needs to be added, a capacitive sensor P1 disposed on the inside of the roof above the top of the occupant, a capacitive sensor P2 disposed on the steering wheel, and a sensor P3 disposed on the vehicle body near the step.

The temperature and humidity sensor can monitor the temperature and humidity of the control system and the seat adjusting system in real time.

The health sensor can monitor the body temperature, heartbeat, blood pressure and the like of the passenger in real time.

The invention can unlock a plurality of application scenes by fusing the sensors:

when a passenger sits on the chair, the body type of the passenger is automatically evaluated, the waist support, the leg support, the headrest, the waist side wing and the leg wing are automatically adjusted according to the body type of the passenger, and the position and the angle of the chair are automatically adjusted.

When the body temperature of the passenger is found to be overhigh, the seat heating can be actively closed and the seat ventilation system can be actively opened, or when the body temperature of the passenger is found to be overlow, the seat heating function can be actively opened.

When the vehicle encounters an obstacle and the heart rate of the passenger does not change obviously, a reminding signal can be sent out, and the seat massage function is started.

When in massage, if the passenger leaves the seat, the massage can be automatically stopped, and the passenger returns to the seat to continue the massage.

The vehicle-mounted microcontroller MCU chip can read the values of the composite sensor through IIC, SPI bus or AD mode, and reasonably process the read values by using algorithm, thus realizing intelligent comfortable control of the seat adjusting system.

As shown in fig. 2, the specific workflow is as follows:

s1: monitoring the state of the seat in real time by a capacitance sensor, a current sensor, a humidity sensor, a temperature sensor and a health sensor on the seat, and transmitting the data to an MCU control module through a sensor monitoring module;

s2: the MCU control module carries out comprehensive evaluation and processing according to the data of the plurality of sensors in the step S1, and sends processing information to the heating driving module, the motor driving module and the valve driving module respectively;

s3: the heating driving module, the motor driving module and the valve driving module control the seat comfort adjusting module to perform corresponding adjustment work after receiving the instruction sent by the MCU control module.

The comprehensive evaluation and processing of the MCU control module comprise leg support, leg side wings and headrest adjustment; massage adjustment; comprehensively evaluating the interaction state of the passengers and the seats; adjusting the position of the seat; seat ventilation evaluation; seat heating evaluation; and (4) evaluating the health of the human body.

As shown in fig. 3, the specific method of adjusting the leg rest, the leg wing and the headrest is as follows:

(11) collecting capacitance values of capacitive sensors at the positions of a leg support, a leg side wing and a headrest on the seat, and sending the data to an MCU control module through a sensor monitoring module;

(12) the evaluation module is used for evaluating the states of the passengers and the seats;

(13) judging whether a person is on the seat, and if so, emptying the air bag;

(14) judging whether the seat state is from an unmanned state to a manned state, if so, starting human body shape assessment, finding out a capacitance threshold value of the corresponding body shape under the fitness grade from a calibration database according to the fitness grade requirement of the human body, and controlling the air bag to start inflation; otherwise, judging whether the calibration threshold value is reached;

(15) judging whether the air bag reaches a calibration threshold value, if so, stopping the inflation of the air bag; and otherwise, restarting the capacitance sensor to acquire the capacitance value.

The capacitive sensor is arranged on the foam above the air bag and belongs to non-contact detection, the closer the human body is to the capacitive pole plate, the larger the capacitance is, the larger the feedback value is, and the attachment degree of the human body and the seat can be indirectly represented.

As shown in fig. 4 and 5, the specific method of massage adjustment is as follows:

(21) collecting the capacitance value of a capacitance sensor on the seat, and sending the data to an MCU control module through a sensor monitoring module;

(22) the MCU control module judges whether a person is on the seat, if so, the human body size is evaluated for the first time, and the inflation and deflation threshold values corresponding to the evaluation result are obtained; otherwise, controlling the air bag to deflate;

(23) calculating the body type of the human body for the first time, and calculating corresponding values of the charge and discharge valves according to the calculation result;

(24) judging whether a massage request is received or not, if so, judging whether the inflation threshold value of the air bag of any channel is less than or equal to a calibration threshold value or not; otherwise, controlling the air bag to deflate;

(25) judging whether the inflation threshold value of the air bag of any channel is smaller than or equal to the threshold value, if so, controlling the air bag to stop deflating and start inflating, and acquiring a capacitance value by a capacitance sensor; otherwise, continuously judging whether the inflation threshold value of the air bag of any channel is larger than or equal to the calibration threshold value;

(26) continuously judging whether the inflation threshold value of the air bag of any channel is larger than or equal to the calibration threshold value, if so, controlling the air bag to stop inflating and start deflating, and acquiring a capacitance value by a capacitance sensor; and otherwise, restarting the capacitance sensor to acquire the capacitance value.

When the occupant is not in the seat, all capacitive sensors should read values around 0.

On the one hand, when an occupant sits on the seat, the values of different regions are different according to the posture of the occupant (the capacitive sensors on the seat are symmetrically arranged left and right). For example, when the occupant sits on the seat only at the buttocks, the capacitive sensor values are relatively large only at the buttocks position and the leg rest position. The other positions are small. Based on this, it is possible to know whether or not the occupant is seated on the seat, and the approximate posture.

On the other hand, when the occupant changes posture on the seat, the capacitance value of the relevant area changes, and the software can well judge the approximate action direction of the occupant according to the changes. For example, when the occupant leans to the left, the capacitance on the right side is significantly reduced, while the capacitance on the left side is significantly increased, but the variation in capacitance at the hip position is small. Based on this, the sitting posture change of the passenger can be conveniently obtained.

As shown in fig. 6, the specific method for the evaluation module to perform comprehensive evaluation is as follows:

(31) collecting the capacitance value of a capacitance sensor on the seat, and sending the data to an MCU control module through a sensor monitoring module;

(32) the MCU control module judges whether a human-seat interaction evaluation condition is met or not, and if yes, the interaction state of the passenger and the seat is evaluated; otherwise, judging whether the human body evaluation condition is met;

(33) evaluating the interaction state of the passenger and the seat;

(34) judging whether human body evaluation conditions are met, and if so, carrying out human body shape evaluation; otherwise, judging whether a distance evaluation condition between the passenger and the seat is met;

(35) evaluating the body type of the human body;

(36) judging whether a distance evaluation condition between the passenger and the seat is met, if so, evaluating the distance between the head of the passenger and the roof and the distance between the feet of the passenger and a brake pedal; otherwise, ending the work;

(37) the distance between the head of the passenger and the roof of the vehicle and the distance between the feet of the passenger and the brake pedal are evaluated.

According to the layout of the capacitive sensor shown in fig. 14, a specific method for human body shape assessment is as follows:

(351) selecting testers with different body types, respectively collecting capacitance values of a headrest part, a waist flank, a back, a leg flank, a hip part and a leg support under different environments, and then classifying;

(352) selecting different body type testers, and testing capacitance values and pressure values under different levels of fitting degrees;

(353) and writing the capacitance values corresponding to people with different body types under different levels of fitting degrees into a program as calibration data.

According to the layout of the capacitive sensor of fig. 8 and 14, a specific method of evaluating the condition of the distance between the occupant and the seat is as follows:

(361) selecting testers with different body types, and collecting capacitance values under different environments;

(362) selecting testers with different body types, adjusting the seat positions to test the capacitance values at different distances, wherein the capacitance values comprise head and roof, foot and brake pedal, seat angle and seat headrest position grade;

(363) and the capacitance values corresponding to people with different body types under different distance levels are used as calibration data to be written into the program.

As shown in fig. 7, a specific method of seat position adjustment is as follows:

(41) collecting capacitance values of capacitive sensors near a seat, a steering wheel, a car roof and a brake pedal, and sending data to an MCU control module through a sensor monitoring module;

(42) the MCU control module evaluates the human body type according to the acquired capacitance value;

(43) calling out capacitance limit values corresponding to the angle, the front and rear positions and the upper and lower positions of a seat corresponding to the body type from a calibration database through the body type of the human body;

(44) adjusting the front and back positions of the seat until reaching the limited capacitance value;

(45) adjusting the angular position of the seat until reaching its defined capacitance value;

(46) adjusting the up-down position of the seat until reaching the limited capacitance value;

(47) adjusting the up-down position of the seat headrest until reaching the limited capacitance value;

(48) and (6) ending.

As shown in FIG. 8, when the seat is adjusted forwards and backwards, the value of C3 will change, and by controlling the value of C3, the invention can realize intelligent adjustment of the front and back of the seat. When the seat is adjusted forwards and backwards and the angle is adjusted, the C2 can change along with the adjustment, and the intelligent adjustment of the seat angle can be realized by controlling the C2 value. When the seat is adjusted up and down, the C1 can follow the change, and the intelligent adjustment of the seat up and down can be realized by controlling the C1 value. When the seat headrest is adjusted up and down, C0 is changed, and the headrest can move up and down by controlling the C0 value.

As shown in fig. 9, a specific method of seat ventilation adjustment is as follows:

(51) after the temperature sensor and the humidity sensor on the seat respectively collect temperature and humidity data, the data are sent to the MCU control module through the sensor monitoring module;

(52) the MCU control module judges whether the temperature of a seat or the humidity in the vehicle or the temperature of a human body reaches a limit value or whether a driver is in fatigue driving, and if so, the fan motor is started; otherwise, the fan motor is turned off;

(53) the MCU control module starts the fan through the motor driving module;

(54) and (6) ending.

Compared with the traditional ventilation module, the ventilation module has the advantages that the capacitance sensor, the current sensor and the health sensor are integrated, and the following additional functions can be realized: when the capacitive sensor monitors that a passenger sits on the seat and the sitting posture is changed continuously, the invention can start ventilation to provide fatigue for the passenger, thereby relieving the fatigue of the passenger. When the health sensor monitors fatigue of the passengers, the ventilation is started to remind the passengers. When the ventilation module receives a ventilation instruction, the ventilation airflow control is realized by controlling the current of the motor. It is more intelligent to compare in traditional ventilation module.

As shown in fig. 10, a specific method of seat heating evaluation is as follows:

(61) after the temperature sensor on the seat collects temperature data, the data is sent to the MCU control module through the sensor monitoring module;

(62) the MCU control module judges whether the capacitive sensor is in a data acquisition stage, if so, the data acquisition is finished; otherwise, judging whether the temperature reaches the target temperature value;

(63) judging whether the temperature reaches a target temperature value, if so, stopping heating; otherwise, different PWM is used for controlling the heating wires of all the areas on the seat to perform heating action;

(64) the MCU control module starts the heating wire processing action through the heating driving module;

(65) and (6) ending.

Compared with the traditional integral heating wire, the heating wire is not a whole, but is scattered and distributed in each area of the seat, so that the heating wire can be used as a heating element to realize the fine adjustment of the heating of the seat area, meets the requirement of higher comfort, and can also be used as a capacitance sensor to realize the functions.

As shown in fig. 11, the specific method of human health assessment is as follows:

(71) the health sensor on the seat acquires signals and transmits the data to the MCU control module through the sensor monitoring module;

(72) the MCU control module judges whether the health information of the passenger requested by the outside is received or not, and if so, the MCU control module sends the health information to the vehicle-mounted bus; otherwise, continuously judging whether fatigue driving state information of the passengers is received;

(73) sending health information to a vehicle-mounted bus;

(74) judging whether fatigue driving state information of passengers is received or not, if so, starting massage state evaluation work, seat ventilation evaluation work and automobile side wing reminding work; otherwise, ending;

(75) the MCU control module starts the massage state evaluation work;

(76) the MCU control module starts the ventilation evaluation work of the seat;

(77) the MCU control module starts the automobile side wing to remind work;

(78) and (6) ending.

The health sensor can monitor the health state of passengers in real time, and can be used for controlling a massage system, a static comfortable system and a ventilation and heating system on the seat based on the obtained health state information.