Functional seat and control method

Abstract

The invention discloses a functional seat and a control method, and belongs to the technical field of automobile seats. The functional seat comprises a seat assembly, a camera, an AI controller, a seat I MU and a damping execution controller, and a damper is mounted at the bottom of the seat assembly; the camera is used for collecting portraits; the A I controller is used for recognizing passenger feature information according to the portrait collected by the camera and presetting the damping coefficient of the shock absorber. The seat I MU is used for collecting seat information; the damping execution controller is used for obtaining an execution signal according to the vehicle information and the seat information and feeding back the execution signal to the damper. The comfortable state of a passenger can be obtained in real time, the posture and the vibration frequency of the seat assembly are guaranteed, the vestibular system frequency interval of a passenger is avoided, and therefore the comfort of the passenger is improved, and carsickness is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile seats, and in particular to a functional seat and a control method thereof. Background Art

[0002] When traveling by car, some people will experience motion sickness, which is manifested by vomiting, cold sweats, severe diarrhea, dizziness, etc. Everyone's inner ear vestibular apparatus has a limit to the tolerance of stimulation intensity and stimulation time, which is the dizziness threshold. If the stimulation exceeds this limit, obvious motion sickness symptoms will occur. Sensitive people have poor inner ear adjustment ability and are prone to reaching the dizziness threshold, so they are prone to motion sickness symptoms.

[0003] At present, some cars have begun to improve the comfort of riding and reduce motion sickness by reducing the vibration frequency of the car body. For example: CN107187353A discloses an anti-motion sickness seat, the seat is provided with a frequency measurement sensor, a spring damper unit arranged in the seat cushion and the base, and a control center connected to the frequency measurement sensor and used to control the vibration frequency of the spring damper unit. When the frequency measurement sensor measures that the vibration frequency of the seat is close to the frequency of the vestibular system of the human ear, the control center controls the current of the spring damper unit, thereby adjusting its vibration frequency to offset the vibration of the seat; CN111319524A discloses an anti-motion sickness autonomous balancing seat, including a seat body and a balancing device arranged under the seat body, the balancing device includes a horizontal adjustment mechanism and a vertical adjustment mechanism, the vertical adjustment mechanism includes a shock absorbing mechanism, a shock absorbing spring and shock absorber, the horizontal adjustment mechanism includes a support seat, a support column, an adjustment mechanism and a positioning plate; the device can maintain the stability of the seat and reduce the stimulation of the vestibular apparatus of the inner ear by movement acceleration; CN117360340A discloses an anti-motion sickness balance device, a seat and a car, including: a first fine-tuning device, fixed on a first connecting part, and capable of driving one end of a fixed plate to move up and down; the bottom of the first fine-tuning device is fixed on a seat slide rail; a second fine-tuning device, fixed on a second connecting part, can drive the other end of the fixed plate to move up and down, and slide left and right relative to one end of the fixed plate; the bottom of the second fine-tuning device is fixed on a seat slide rail; it can realize the height adjustment of the seat up and down and left and right to reduce the risk of motion sickness for passengers.

[0004] It can be seen that among the existing solutions, some are only used to maintain the stability of the seat, and some cannot identify passenger information. Since each person's vestibular frequency is different, it only avoids the vibration frequency range in a fixed manner, cannot be different for different people, and cannot be adjusted in real time according to the status of the current passengers. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a functional seat and a control method, which can obtain the comfort status of the passengers in real time, ensure the posture and vibration frequency of the seat assembly, avoid the frequency range of the vestibular system of the passengers, thereby improving the comfort of the passengers and avoiding the occurrence of motion sickness.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] In a first aspect, an embodiment of the present invention provides a functional seat, comprising:

[0008] A seat assembly having a shock absorber mounted on the bottom thereof;

[0009] Camera, used to capture portraits;

[0010] AI controller, used to identify passenger characteristics based on the portrait captured by the camera and preset the damping coefficient of the shock absorber;

[0011] Seat I MU, used to collect seat information;

[0012] The vibration reduction execution controller is used to obtain an execution signal according to vehicle information and seat information, and feed the execution signal back to the vibration reduction device.

[0013] As a further implementation, a retractable air outlet is connected to the side of the seat assembly.

[0014] As a further implementation, a plurality of shock absorbers are connected between the first base plate and the second base plate; and a supporting component is installed outside the shock absorber.

[0015] As a further implementation, a driving display is also included, and the driving display is used to display external environment information.

[0016] In a second aspect, an embodiment of the present invention further provides a control method for a functional seat, comprising:

[0017] Preset the damping coefficient of the shock absorber based on the passenger feature information of the portrait recognition;

[0018] When the vehicle is running in different working conditions, the shock absorber execution signal is calculated according to the vehicle information and seat information;

[0019] The shock absorber adjusts the seat posture according to the actuation signal.

[0020] As a further implementation, the passenger characteristic information includes the passenger's gender, age, height, weight, and facial expression status.

[0021] As a further implementation method, the vehicle information includes lateral acceleration, longitudinal acceleration, and yaw angle obtained by the vehicle IMU; the seat information includes lateral acceleration, longitudinal acceleration, yaw angle, and elevation and vibration frequency signals of the shock absorber obtained by the seat IMU.

[0022] As a further implementation method, closed-loop control is performed based on the seat IMU signal and the vibration frequency signal of the shock absorber.

[0023] As a further implementation method, the AI ​​controller identifies the passenger's comfort status in real time based on the portrait captured by the camera, calculates and outputs the passenger comfort coefficient; and feeds back the passenger comfort coefficient to the vibration reduction execution controller, which performs collaborative control.

[0024] As a further implementation method, the operating conditions of the vehicle include acceleration, deceleration, going over bumps, climbing slopes, cornering, and braking conditions.

[0025] The beneficial effects of the present invention are as follows:

[0026] (1) The present invention installs an AI controller, a seat IMU, and a vibration reduction execution controller under the seat assembly, and configures a camera in front of the seat assembly. The AI ​​controller monitors the facial expressions and postures of passengers in real time through the camera to identify the comfort status of passengers; based on the identified comfort status of passengers, the AI ​​controller calculates and outputs the comfort coefficient of passengers; the vibration reduction execution controller performs coordinated control according to the comfort coefficient output by the AI ​​controller, and further adjusts the parameters of the shock absorber to optimize the passenger's riding experience; when encountering turning, vibrating road conditions and other working conditions, the four-wheel suspension collects the vibration frequency to adjust the seat damper to offset the vibration frequency and stagger it with the vestibular frequency of the brain; collects information such as lateral and longitudinal acceleration, adjusts the damping of shock absorbers at different positions, ensures the stability of the seat, and offsets the movement of the seat caused by the movement of the vehicle.

[0027] (2) The vibration reduction execution controller of the present invention performs closed-loop control based on the seat IMU signal and the vibration frequency signal fed back by the shock absorber to adjust the seat shock absorber in real time to achieve the best vibration reduction effect; the camera collects the passenger status in real time and can self-adjust and re-change the seat damping; if the collected human body status is good, the corresponding parameters can be retained for direct call next time. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0029] Figure 1 is a three-dimensional diagram of a functional seat according to one or more embodiments of the present invention;

[0030] Figure 2 is a side view of a functional seat according to one or more embodiments of the present invention;

[0031] Figure 3 is a cross-sectional view of a shock absorber according to one or more embodiments of the present invention;

[0032] Figure 4 is a functional seat control flow chart according to one or more embodiments of the present invention.

[0033] Among them, 1. retractable air outlet, 2. seat assembly, 3. camera, 4. driving display, 5. supporting component, 6. shock absorber, 7. AI controller, 8. seat I MU, 9. vibration reduction execution controller, 10. first base plate, 11. second base plate. DETAILED DESCRIPTION

[0034] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0035] Glossary:

[0036] I MU – Inertial Measurement Unit;

[0037] AI Controller – Artificial Intelligence Controller;

[0038] CDC – Continuous Damping Control;

[0039] Vibration reduction actuator controller - a controller used to control the execution of the shock absorber.

[0040] Embodiment 1:

[0041] This embodiment provides a functional seat, such as Figure 1 and Figure 2 As shown, the seat assembly 2, camera 3, AI controller 7, seat I MU8, and vibration reduction execution controller 9 are included. A plurality of vibration absorbers 6 are provided at the bottom of the seat assembly 2. The vibration absorbers 6 are connected between the first bottom plate 10 and the second bottom plate 11. The seat assembly 2 is installed on the upper side of the second bottom plate 11. In this embodiment, the AI ​​controller 7 and the seat I MU8 are arranged on the second bottom plate 11, and the vibration reduction execution controller 9 is arranged on the second bottom plate 11.

[0042] like Figure 3 As shown, the shock absorber 6 is arranged between the first base plate 10 and the second base plate 11, and the shock absorber 6 is arranged in the support component 5, and the support component 5 is a rigid spring or an airbag; the shock absorber 6 is a CDC or a hydraulic shock absorber.

[0043] Camera 3 is used to capture portraits; AI controller 7 is used to identify the passenger's gender, age, height, weight, facial expression and other characteristic information based on the portrait captured by camera 3, and preset the shock absorber damping coefficient. Specifically, for first-time passengers, the passengers are classified by identifying their characteristic information, and the corresponding shock absorber damping coefficient (i.e., comfortable vibration frequency range, which has avoided the dizziness threshold) is preset by looking up the table; if it is not the first time, the passenger is judged by identifying the passenger's characteristics, and the final stored preset shock absorber damping coefficient (comfortable frequency range) is read in AI controller 7.

[0044] It should be noted that, since the vestibular resonance frequencies of the brains of people of different age groups and genders are different, a table is prepared in advance based on this, and a comfortable vibration frequency range is determined according to the table.

[0045] The seat I MU8 is used to collect signals such as the lateral acceleration, longitudinal acceleration, and yaw angle of the seat; the vibration reduction execution controller 9 is used to calculate and output execution signals to the shock absorber 6 based on the vehicle information and the seat information, wherein the seat information includes the signals collected by the seat I MU8 and the elevation and vibration frequency signals of the shock absorber 6, and the vehicle information is the vehicle lateral acceleration, longitudinal acceleration, yaw angle and other signals collected by the vehicle I MU.

[0046] Furthermore, the vibration frequency of the four-wheel suspension is used to infer the vibration of the current seat; by collecting the lateral acceleration, longitudinal acceleration, and yaw angle, the upcoming movement posture of the seat is obtained, so that the movement of the vehicle is offset by the movement of the seat shock absorber to keep the seat posture stable.

[0047] The side of the seat assembly 2 is connected to a telescopic air outlet 1, which can adjust the size and direction of the air outlet to ensure that the passengers can breathe fresh or oxygen-rich air at a suitable temperature to relieve motion sickness symptoms. For the rear seats, a driving display 4 is arranged in front of the seat assembly 2, through which the passengers can feel the external environment information such as the driving direction, which can also achieve the purpose of relieving motion sickness symptoms.

[0048] Embodiment 2:

[0049] The present embodiment provides a control method for a functional seat, which adopts the functional seat described in Example 1, presets the shock absorber damping coefficient based on the passenger feature information through portrait recognition; when the vehicle is running in different working conditions, calculates the shock absorber 6 execution signal based on the vehicle information and the seat information; and the shock absorber 6 adjusts the seat posture according to the execution signal.

[0050] Specifically, Figure 4 As shown, the following steps are included:

[0051] Step 1: Identification of passenger characteristics:

[0052] After the passenger takes his seat, the AI ​​controller 7 collects portrait data through the camera 3 for face recognition, and identifies the passenger's gender, age, height, weight, facial expression and other information; based on the identified passenger characteristics, the AI ​​controller 7 presets the shock absorber damping coefficient to adapt to the physical characteristics and preferences of different passengers.

[0053] Step 2: Vehicle condition monitoring and signal processing:

[0054] When the vehicle is under different working conditions (such as acceleration, deceleration, going over bumps, bumping over slopes, turning, braking, etc.), the vibration reduction execution controller 9 calculates the dynamic state of the vehicle and the seat based on multiple signals, including the elevation and vibration frequency signals of the shock absorber 6, the lateral acceleration, longitudinal acceleration, yaw angle and other signals collected by the vehicle IMU, and the lateral acceleration, longitudinal acceleration, yaw angle and other signals collected by the seat IMU8, to provide data support for subsequent vibration reduction control.

[0055] Step 3: Execution and closed-loop control of shock absorber 6:

[0056] The shock absorber 6 receives the execution signal and performs the corresponding vibration reduction action, and at the same time feeds back the vibration frequency signal to the vibration reduction execution controller 9. The vibration reduction execution controller 9 performs closed-loop control according to the seat I MU8 signal and the vibration frequency signal fed back by the shock absorber 6 to ensure that the vibration reduction effect is optimal.

[0057] Furthermore, the vibration frequency of the four-wheel suspension is used to deduce the vibration of the current seat, so as to preset the damping of the seat shock absorber 6 to offset the vibration of the seat caused by the vehicle vibration and ensure the comfort of the passengers; the upcoming movement posture of the seat is obtained by collecting the lateral acceleration, longitudinal acceleration, and yaw angle, so as to offset the influence of the vehicle movement through the damping and movement of the shock absorber 6 to keep the posture of the seat stable. Then, the control accuracy is checked by collecting the data of the seat I MU8 and the shock absorber 6. In addition, the passenger comfort is judged by collecting the characteristic state of the passenger, so as to judge the control effect and continuously optimize the control.

[0058] This embodiment can identify the passenger's comfort state in real time, calculate the comfort coefficient, and can perform collaborative control; wherein, the AI ​​controller 7 monitors the passenger's facial expression and posture through the camera 3 in real time to identify the passenger's comfort state; based on the identified passenger's comfort state, the AI ​​controller 7 calculates and outputs the passenger's comfort coefficient; the vibration reduction execution controller 9 performs collaborative control according to the comfort coefficient output by the AI ​​controller 7, and further adjusts the parameters of the shock absorber 6 to optimize the passenger's riding experience.

[0059] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A functional seat, characterized in that: include: A seat assembly, with a shock absorber mounted on the bottom; Camera, used to capture portraits; AI controller, used to identify passenger characteristics based on the portrait captured by the camera and preset the damping coefficient of the shock absorber; Seat IMU, used to collect seat information; The vibration reduction execution controller is used to obtain an execution signal according to vehicle information and seat information, and feed the execution signal back to the vibration reduction device.

2. A functional seat according to claim 1, characterized in that: A telescopic air outlet is connected to the side of the seat assembly.

3. A functional seat according to claim 1, characterized in that: A plurality of shock absorbers are connected between the first bottom plate and the second bottom plate; and a supporting component is installed outside the shock absorber.

4. A functional seat according to claim 1, characterized in that: It also includes a driving display, which is used to display external environment information.

5. A control method for a functional seat according to any one of claims 1 to 4, characterized in that: include: Preset the damping coefficient of the shock absorber based on the passenger feature information of the portrait recognition; When the vehicle is running in different working conditions, the shock absorber execution signal is calculated according to the vehicle information and seat information; The shock absorber adjusts the seat posture according to the actuation signal.

6. The control method of a functional seat according to claim 5, characterized in that: The passenger characteristic information includes the passenger's gender, age, height, weight, and facial expression status.

7. The control method of a functional seat according to claim 5, characterized in that: The vehicle information includes the lateral acceleration, longitudinal acceleration, and yaw angle obtained by the vehicle IMU; the seat information includes the lateral acceleration, longitudinal acceleration, yaw angle, and the elevation and vibration frequency signals of the shock absorber obtained by the seat IMU.

8. The control method of a functional seat according to claim 7, characterized in that: Closed-loop control is performed based on the seat IMU signal and the vibration frequency signal of the shock absorber.

9. The control method of a functional seat according to claim 5, characterized in that: The AI ​​controller identifies the passenger's comfort status in real time based on the portrait captured by the camera, calculates and outputs the passenger comfort coefficient, and feeds back the passenger comfort coefficient to the vibration reduction execution controller, which performs collaborative control.

10. The control method of a functional seat according to claim 5, characterized in that: The operating conditions of the vehicle include acceleration, deceleration, going over bumps, bumping over slopes, cornering, and braking conditions.

Images