CN115476750A

CN115476750A - Seat headrest sound system, control method, seat and vehicle

Info

Publication number: CN115476750A
Application number: CN202110667949.7A
Authority: CN
Inventors: 王泽龙
Original assignee: Noble Automotive Technology Co ltd
Current assignee: Noble Automotive Technology Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2022-12-16

Abstract

The present disclosure relates to a seat headrest sound system, a control method, a seat and a vehicle, the system comprising: a sound box for movably being disposed in the seat headrest and having a storage position for being disposed in the seat headrest and a listening position projecting from the seat headrest for opposing an ear of an occupant on the seat; the driving mechanism is used for driving the sound box to move between the storage position and the listening position; the acquisition module can acquire the sitting posture position information of the driver at the current moment; the controller, actuating mechanism and collection module all are connected with the controller electricity, and the controller is used for according to driver and crew's position of sitting position information at the present moment, and control actuating mechanism drive stereo set moves to the listening position corresponding with driver and crew's position of sitting at the present moment to satisfy the demand of different driver and crew to the different position of use of stereo set, improve user experience.

Description

Seat headrest sound system, control method, seat and vehicle

Technical Field

The present disclosure relates to the field of vehicle technology, and in particular, to a seat headrest sound system, a control method, a seat, and a vehicle.

Background

Along with the development of the intelligent passenger cabin of the vehicle, the digitization of the passenger cabin becomes the key point of the automobile intelligence, and a user puts forward higher experience requirements on the passenger cabin.

The existing vehicle cabin is generally provided with only one sound box, drivers in front and back rows cannot listen to respective music or telephone calls, and a private space is not provided. Although prior art's seat headrest is provided with the headrest stereo set, can provide private space, the headrest stereo set position is all fixed, can't adjust, and then can't satisfy the user demand in different driver and passenger's the best listening position, reduces user experience.

Disclosure of Invention

The seat headrest sound system can meet the requirements of different drivers and passengers on different use positions of sound, and improves user experience.

In order to achieve the above object, the present disclosure provides a seat headrest sound system including:

a sound for movably disposed in a seat headrest and having a stowed position for disposition within the seat headrest and a listening position projecting from within the seat headrest for opposing an ear of an occupant of a seat;

a drive mechanism for driving the sound to move between the storage location and the listening location;

the acquisition module can acquire the sitting posture position information of the driver at the current moment;

the driving mechanism and the acquisition module are electrically connected with the controller, and the controller is used for controlling the driving mechanism to drive the sound equipment to move to a listening position corresponding to the sitting position of the driver at the current moment according to the sitting position information of the driver at the current moment.

Optionally, the two sound devices are provided, and the driving mechanism is configured to drive the two sound devices to move between the storage positions and the listening positions respectively.

Optionally, the seat headrest sound system further comprises a slide rail, a first slide bar, and a second slide bar;

the sliding rail is arranged in the seat headrest, is arranged along the horizontal direction and is in an arc shape recessed towards a driver and a passenger, and is provided with a first semi-arc part and a second semi-arc part which are connected with each other;

the first sliding rod is an arc-shaped rod attached to the first semi-arc part and is slidably arranged on the first semi-arc part, and the second sliding rod is an arc-shaped rod attached to the second semi-arc part and is slidably arranged on the second semi-arc part;

the first slide bar and the second slide bar are respectively connected with one sound box, and the driving mechanism is arranged in the seat headrest and can drive the first slide bar and the second slide bar to slide away from or towards each other, so that the two sound boxes move towards respective listening positions or towards respective storage positions.

Optionally, the driving mechanism includes a first gear, a second gear and a driving motor, the driving motor is electrically connected to the controller, the first gear is in transmission connection with a motor shaft of the driving motor, and the second gear is engaged with the first gear;

the first slide bar is configured as a first rack and is in mesh with the first gear, and the second slide bar is configured as a second rack and is in mesh with the second gear.

Optionally, a first sliding groove and a second sliding groove extending along the extending directions of the first semi-arc portion and the second semi-arc portion are formed on the first semi-arc portion and the second semi-arc portion, respectively;

the seat headrest sound system further comprises a first sliding block and a second sliding block, wherein the first sliding block is connected with the first sliding rod and is slidably arranged in the first sliding groove; the second sliding block is connected with the second sliding rod and is arranged in the second sliding groove in a sliding mode.

Optionally, both ends of the first sliding chute and the second sliding chute in the extending direction are closed;

when the first sliding block abuts against the end part, far away from the second half-arc part, of the first sliding groove, the sound box connected to the first sliding rod is located at the listening position, and when the first sliding block abuts against the end part, near the second half-arc part, of the first sliding groove, the sound box connected to the first sliding rod is located at the accommodating position;

when the second sliding block abuts against the end portion, far away from the first semi-arc portion, of the second sliding groove, the sound box connected to the second sliding rod is located at the listening position, and when the second sliding block abuts against the end portion, near the first semi-arc portion, of the second sliding groove, the sound box connected to the second sliding rod is located at the accommodating position.

Optionally, the acquisition module is a DMS camera and/or an OMS camera.

The present disclosure still provides a seat, the seat includes seat headrest, seat body and foretell seat headrest sound system, be provided with on the seat headrest and supply the opening that the stereo set wore to establish.

The present disclosure additionally provides a vehicle comprising the seat.

The present disclosure still further provides a control method of a seat headrest audio system, the control method being applied to the seat headrest audio system described above, the control method including:

acquiring sitting posture position information of a driver at the current moment;

and controlling a driving mechanism to drive the sound box to move to a listening position corresponding to the sitting position of the driver at the current moment.

In the technical scheme, the acquisition module acquires the sitting posture position information of the driver at the current moment and then sends the sitting posture position information to the controller, and the controller controls the driving mechanism to drive the sound equipment to move to the listening position corresponding to the sitting posture position of the driver at the current moment according to the sitting posture position information of the driver at the current moment. On one hand, the sound equipment is arranged on the headrest of the seat, so that the use requirements of drivers and passengers on different seats on the sound equipment can be met, and the privacy is better; in addition, on the one hand, the controller controls the driving mechanism to adjust the position of the sound box, so that the requirements of different drivers and passengers for different use positions of the sound box can be met, and the use experience of a user is improved. In addition, the degree of automation of the seat investment sound system can be improved by arranging the controller. When the driver and the passenger do not need to use the sound box, the controller controls the driving mechanism to drive the sound box to move from the listening position to the accommodating position in the seat headrest, so that the sound box is accommodated, the internal space of the seat headrest is utilized, a separate external space is not required to be arranged for accommodating the sound box, and the space utilization rate is high; in addition, the sound box is hidden in the seat headrest, so that the appearance is stronger.

Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic view of a portion of a seat headrest sound system according to one embodiment of the present disclosure;

FIG. 2 is a schematic view of a seat headrest sound system according to an embodiment of the present disclosure;

fig. 3 is a flowchart of a control method of a seat headrest audio system according to an embodiment of the present disclosure.

Description of the reference numerals

1. Sound 2 driving mechanism

21. First gear 22 second gear

31. First semi-arc part of slide rail 311

312. Second semi-arc 32 first slide bar

33. Second slide bar 20 acquisition module

30. Controller 40 actuator

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, the use of directional words such as "up, down, left, right, front, and rear" in the case where no description is made to the contrary means that the seat headrest acoustic assembly of the present disclosure is defined as up, down, left, right, front, and rear in the normal use state; for example, when the seat headrest audio assembly is applied to a vehicle, the terms "up, down, left, right, front, and rear" refer to up, down, left, right, front, and rear of the vehicle; terms such as "inner and outer" are used to refer to the inner and outer of a particular structural profile; terms such as "first" and "second" are used merely to distinguish one element from another and are not sequential or significant.

As shown in fig. 1-2, the present disclosure provides a seat headrest audio system that includes an audio 1, a drive mechanism 2, an acquisition module 20, and a controller 30. The sound box 1 is movably arranged on a seat headrest and is provided with a storage position arranged in the seat headrest and a listening position extending out of the seat headrest and used for being opposite to the ears of an occupant on the seat;

the driving mechanism 2 is used for driving the sound box 1 to move between a storage position and a listening position; the acquisition module 20 can acquire the sitting position information of the driver at the current moment; the driving mechanism 2 and the acquisition module 20 are both electrically connected with the controller 30, and the controller 30 is used for controlling the driving mechanism 2 to drive the sound box 1 to move to a listening position corresponding to the sitting position of the driver at the current moment according to the sitting position information of the driver at the current moment.

In the above technical solution, the acquisition module 20 acquires the sitting posture position information of the driver at the current time and then sends the sitting posture position information to the controller 30, and the controller 30 controls the driving mechanism 2 to drive the sound box 1 to move to the listening position corresponding to the sitting posture position of the driver at the current time according to the sitting posture position information of the driver at the current time. On one hand, the sound box 1 is arranged on the headrest of the seat, so that the use requirements of drivers and passengers on different seats on the sound box 1 can be met, and better privacy is achieved; on the other hand, the controller 30 controls the driving mechanism 2 to adjust the position of the sound box 1, so that the requirements of different drivers and passengers for different use positions of the sound box 1 can be met, and the use experience of users is improved. In addition, the degree of automation of the seat investment sound system can be improved by providing the controller 30. When the driver and the passenger do not need to use the sound box 1, the controller 30 controls the driving mechanism 2 to drive the sound box 1 to move from the listening position to the accommodating position in the seat headrest, so that the sound box 1 is accommodated, the internal space of the seat headrest is utilized, a separate external space is not required to be arranged for accommodating the sound box 1, and the space utilization rate is high; further, the sound box 1 is hidden in the headrest of the seat, and the appearance is enhanced.

In one embodiment, as shown in fig. 2, two sound units 1 are provided, and the driving mechanism 2 is configured to drive the two sound units 1 to move between their respective storage positions and listening positions. Through setting up stereo set 1 into two, these two stereo sets 1 can be used for supplying driver and crew's left and right ears respectively to use, improve stereo set 1's practicality and driver and crew's use experience.

In one embodiment, referring to fig. 2, the seat headrest sound system further includes a slide rail 31, a first slide bar 32, and a second slide bar 33; the slide rail 31 is arranged in the seat headrest, is arranged along the horizontal direction, and is in an arc shape recessed towards the driver and the passenger, and the slide rail 31 is provided with a first half-arc part 311 and a second half-arc part 312 which are connected with each other; the first slide bar 32 is configured as an arc-shaped bar attached to the first half-arc portion 311 and slidably disposed on the first half-arc portion 311, and the second slide bar 33 is configured as an arc-shaped bar attached to the second half-arc portion 312 and slidably disposed on the second half-arc portion 312; the first slide bar 32 and the second slide bar 33 are respectively connected with one sound box 1, and the driving mechanism 2 is arranged in the seat headrest and can drive the first slide bar 32 and the second slide bar 33 to slide away from or towards each other so as to enable the two sound boxes 1 to move towards the respective listening positions or towards the respective storage positions.

In this embodiment, the slide rail 31 is provided in the seat headrest and arranged in the horizontal direction in an arc shape recessed toward the occupant; further, the first slide bar 32 and the second slide bar 33 configured as arc-shaped bars are slidably attached to the first half arc portion 311 and the second half arc portion 312 of the slide rail 31, respectively, and one sound 1 is provided on the first slide bar 32 and the second slide bar 33, respectively. When the two sound boxes 1 are in the storage positions, the first slide bar 32 and the second slide bar 33 are arranged in the headrest of the seat, so that the two sound boxes 1 are stored; when a driver and a passenger need to use the sound boxes, the driving mechanism 2 drives the first sliding rod 32 and the second sliding rod 33 to slide away from each other, so that the two sound boxes 1 extend out of the seat headrest under the driving of the first sliding rod 32 and the second sliding rod 33 and move to listening positions, and the using requirements of the driver and the passenger are met.

During the process of the first slide bar 32 and the second slide bar 33 moving away from each other, the two sound boxes 1 arranged on the first slide bar 32 and the second slide bar 33 can move at least in two directions, one is to move in the left-right direction, and the other is to move in the front-back direction. For example, during the process of moving the first slide bar 32 and the second slide bar 33 away from each other, the audio device 1 extends to the left inside the headrest of the seat and moves forward to approach the left ear of the occupant to reach the listening position.

Optionally, the driving mechanism 2 includes a first gear 21, a second gear 22 and a driving motor, the driving motor is electrically connected to the controller 30, the first gear 31 is in transmission connection with a motor shaft of the driving motor, and the second gear 22 is meshed with the first gear 21; the first slide 32 is configured as a first rack and meshes with the first gearwheel 21, and the second slide 33 is configured as a second rack and meshes with the second gearwheel 22.

The driving mechanism 2 has a simple structure, and the space occupied by the driving mechanism 2 in the seat headrest can be reduced as much as possible; and the driving mechanism 2 is stable in driving, can realize stable driving of the first slide bar 32 and the second slide bar 33, and improves the running stability of the first slide bar 32 and the second slide bar 33.

Specifically, when the controller 30 controls the motor shaft of the driving motor to rotate in the clockwise direction, the first gear 21 also rotates in the clockwise direction and drives the first slide bar 32 configured as a first rack to move toward a direction away from the second slide bar 33, so that the sound 1 provided on the first slide bar 32 moves toward the listening position; at the same time, the second gear 22, which is meshed with the first gear 21, rotates in the counterclockwise direction and drives the second slide bar 33, which is configured as a second rack, to move in a direction away from the first slide bar 32, so that the sound box 1 provided on the second slide bar 33 also moves toward the listening position, that is, the drive mechanism 2 can synchronously drive the first slide bar 32 and the second slide bar 33 to move toward the listening position.

When the controller 30 controls the motor shaft of the driving motor to rotate in the counterclockwise direction, the first gear 21 also rotates in the counterclockwise direction and drives the first slide bar 32 configured as the first rack to move toward a direction close to the second slide bar 33, so that the sound 1 provided on the first slide bar 32 moves toward the storage position; at the same time, the second gear 22 engaged with the first gear 21 rotates in the clockwise direction and drives the second slide bar 33 configured as a second rack to move in a direction approaching the first slide bar 32, so that the sound 1 provided on the second slide bar 33 also moves toward the storage position, that is, the drive mechanism 2 can synchronously drive the first slide bar 32 and the second slide bar 33 to move toward the storage position.

However, the present disclosure does not limit the specific structure type of the driving mechanism 2, and can be set according to the requirement.

In one embodiment, the first half-arc portion 311 and the second half-arc portion 312 are respectively formed with a first sliding groove and a second sliding groove extending along the extending directions thereof; the seat headrest sound system further comprises a first slide block and a second slide block, wherein the first slide block is connected with the first slide rod 32 and is slidably arranged in the first slide groove; the second sliding block is connected with the second sliding rod 33 and slidably disposed in the second sliding slot.

By respectively arranging the first sliding groove and the second sliding groove on the first semi-arc portion 311 and the second semi-arc portion 312 and arranging the first sliding block and the second sliding block which are matched with the first sliding groove and the second sliding groove, the sliding rod can be driven to move relative to the sliding rail 31 in the sliding process of the sliding block in the sliding grooves, and therefore the movement of the sound box 1 between the accommodating position and the listening position is achieved. Simple structure and drive are stable.

In addition, the first sliding block and the second sliding block can be respectively clamped in the first sliding groove and the second sliding groove, so that the first sliding rod 32 and the second sliding rod 33 are prevented from being separated from the first half-arc part 311 and the second half-arc part 312 respectively.

Optionally, two ends of the first sliding chute and the second sliding chute in the extending direction are closed; when the first sliding block abuts against the end part of the first sliding groove far away from the second half-arc part 312, the sound box 1 connected to the first sliding rod 32 is located at a listening position, and when the first sliding block abuts against the end part of the first sliding groove near the second half-arc part 312, the sound box 1 connected to the first sliding rod 32 is located at a storage position; when the second sliding block abuts against the end portion of the second sliding groove far away from the first semi-arc portion 311, the sound box 1 connected to the second sliding rod 33 is located at a listening position, and when the second sliding block abuts against the end portion of the second sliding groove near the first semi-arc portion 311, the sound box 1 connected to the second sliding rod 33 is located at a storage position.

That is, when the first sliding block abuts against the two end portions of the first sliding groove, the sound 1 connected to the first sliding rod 32 is located at the listening position or the storage position, and the end portion of the first sliding groove stops the position of the first sliding block, so that the sound 1 connected to the first sliding rod 32 can accurately move to the listening position or the storage position; similarly, the two ends of the second chute can also achieve the same function, and the disclosure is not repeated herein.

Optionally, the seat headrest audio assembly further comprises a lifting mechanism; the slide rail 31 and the driving mechanism 2 are both used for being movably arranged in the headrest of the seat along the up-down direction, and the lifting mechanism is used for driving the slide rail 31 and the driving mechanism 2 to synchronously ascend or descend so as to meet the use requirements of drivers and passengers with different heights on different heights of the sound box 1.

Specifically, the lifting mechanism comprises a linear motor and a connecting support, a motor shaft of the linear motor is connected with the connecting support, the connecting support is connected with the sliding rail 31 and the driving mechanism 2, and the sliding rail 31 and the driving mechanism 2 can be driven to move upwards in the upward movement process of the motor shaft of the linear motor, so that the height using requirement of a driver with a high height on the sound box 1 can be met; the slide rail 31 and the driving mechanism 2 can be driven to move downwards in the process of downward movement of the motor shaft of the linear motor, so that the height using requirement of a driver and a passenger with short height on the sound box 1 is met.

However, the present disclosure does not limit the specific structure of the elevating mechanism, and the slide rail 31 and the driving mechanism 2 may be stably driven to move in the vertical direction.

Optionally, the above-mentioned acquisition module 20 is a DMS (driver monitoring) camera and/or an OMS (passenger monitoring) camera, so as to acquire the head portrait physical data of the driver and/or the passenger and store the head portrait physical data in a standard database. For example, the DMS (driver monitoring) camera and/or OMS (occupant monitoring) camera can collect head, ear, and body data of the occupant, transmit the occupant data to the controller 30 via the FPDLINK or GMSL protocol, and the controller 30 performs three-dimensional modeling on the occupant to form a three-dimensional model of the occupant, which is stored in a standard database. However, the present disclosure is not limited to a particular type of configuration for the acquisition module 20.

The present disclosure additionally provides a seat comprising a seat headrest, a seat body and the seat headrest acoustic system of any one of claims 1 to 7, the seat headrest being provided with an opening through which the acoustic 1 is arranged.

Optionally, the above-mentioned seat headrest sound system further comprises an actuator 40, wherein the actuator 40 is arranged on the seat body and electrically connected with the controller 30 for controlling the operation of the driving mechanism 2. By providing this actuator 40, the controller 30 is prevented from being directly connected to the driving mechanism 2, which is inconvenient for wiring design.

The present disclosure additionally provides a vehicle comprising the seat described above.

In another aspect of the present disclosure, there is also provided a control method of a seat headrest audio system, the control method being applied to the seat headrest audio system described above, the control method including:

s1, acquiring sitting posture position information of a driver at the current moment;

and S2, controlling the driving mechanism 2 to drive the sound box 1 to move to a listening position corresponding to the sitting position of the driver at the current moment.

The position of the sound box 1 can be adjusted by controlling the driving mechanism 2, so that the requirements of different drivers and passengers for different use positions of the sound box 1 can be met, and the use experience of a user is improved.

Specifically, in an alternative embodiment, when the driver needs to adjust the sound box 1, the driver issues an adjustment control command through the controller 30 and controls the driving mechanism 2 to drive the sound box 1 to move so that the sound box 1 moves to the listening position, and after moving to the listening position, the controller 30 controls the sound box 1 to play sound.

More specifically, the aforementioned actuator 40 is configured to monitor a start signal of the driving motor, determine whether the driving motor is started successfully, and if the actuator 40 determines that the driving motor is not started successfully, return to wait for issuing a control command of the actuator 40; if the actuator 40 judges that the driving motor is successfully started, the first slide bar 32 and the second slide bar 33 drive the two sound boxes 1 to move away from each other; the drive motor feeds the current position coordinate back to the actuator 40 through a Hall sensor arranged on the drive motor, the actuator 40 judges the distance between the current sound 1 position coordinate and the listening position coordinate, and a debugging control instruction is issued to the drive motor; the sound 1 reaches a listening position and then is fed back to the actuator 40, and the actuator 40 locks the driving motor; after the driving motor is locked, the actuator 40 feeds back the information that the sound 1 is at the listening position to the controller 30, the controller 30 plays left and right channel music or telephone, and the sound 1 plays music or telephone signals after amplification.

In addition, the DMS (driver monitor) camera and/or the OMS (passenger monitor) camera collects data of the head, ears, body, etc. of the driver and the passenger, and transmits the passenger data to the controller 30 through the FPDLINK or GMSL protocol; the controller 30 performs three-dimensional modeling on the driver and the passengers to form a passenger three-dimensional model, and stores the passenger three-dimensional model into a standard database; the controller 30 calculates the listening position of the driver and the passenger according to the data; : the controller 30 calculates the initial position coordinates a (Xs, ys, zs) of the sound 1; the controller 30 calculates the listening position coordinates B (Xf, yf, zf) of the driver and the passenger through a body database collected by a DMS (driver monitoring) camera and/or an OMS (passenger monitoring) camera; the controller 30 calculates the relative positions of the two points a (Xs, ys, zs) and B (Xf, yf, zf) to generate a control command; the controller 30 collects the position coordinates of the sound 1 in real time through a DMS (driver monitoring) camera and/or an OMS (passenger monitoring) camera, and determines whether the sound reaches the listening position; the controller compares the position coordinates C (Xi, yi, zi) and B (Xf, yf, zf) of the collected sound 1 to judge whether the sound 1 reaches the listening position; after the controller 30 judges that the sound equipment 1 reaches the listening position, a control instruction is sent to the actuator 40 to lock the driving motor; after the driving motor is locked, the actuator 40 feeds back the information that the sound box 1 is at the listening position to the controller 30, the controller 30 plays left and right channel music or telephone, and the sound box 1 plays music or telephone signals after being amplified.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure as long as it does not depart from the gist of the present disclosure.

Claims

1. A seat headrest sound system, comprising:

a sound (1), said sound (1) being adapted to be movably arranged in a seat headrest and having a stowed position for arrangement in said seat headrest and a listening position projecting from said seat headrest for opposing an ear of a driver on the seat;

a drive mechanism (2), wherein the drive mechanism (2) is used for driving the sound box (1) to move between the storage position and the listening position;

the system comprises an acquisition module (20), wherein the acquisition module (20) can acquire sitting position information of a driver at the current moment;

the sound box comprises a controller (30), the driving mechanism (2) and the acquisition module (20) are electrically connected with the controller (30), and the controller (30) is used for controlling the driving mechanism (2) to drive the sound box (1) to move to a listening position corresponding to the sitting position of a driver at the current moment according to the sitting position information of the driver at the current moment.

2. A seat headrest sound system as claimed in claim 1, wherein said sound devices (1) are provided in two, and said drive mechanism (2) is adapted to drive the two sound devices (1) to move between their respective stowed positions and listening positions.

3. The seat headrest sound system as claimed in claim 2, further comprising a slide rail (31), a first slide bar (32) and a second slide bar (33);

the sliding rail (31) is arranged in the seat headrest, is arranged along the horizontal direction and is in an arc shape sunken towards a driver and a passenger, and the sliding rail (31) is provided with a first semi-arc part (311) and a second semi-arc part (312) which are connected with each other;

the first slide bar (32) is configured as an arc-shaped bar attached to the first semi-arc portion (311) and slidably disposed to the first semi-arc portion (311), the second slide bar (33) is configured as an arc-shaped bar attached to the second semi-arc portion (312) and slidably disposed to the second semi-arc portion (312);

the first slide bar (32) and the second slide bar (33) are respectively connected with one sound box (1), and the driving mechanism (2) is arranged in the headrest of the seat and can drive the first slide bar (32) and the second slide bar (33) to slide away from or towards each other, so that the two sound boxes (1) move towards respective listening positions or towards respective storage positions.

4. The seat headrest sound system as claimed in claim 3, wherein the drive mechanism (2) includes a first gear (21), a second gear (22), and a drive motor electrically connected to the controller (30), the first gear (31) being in driving connection with a motor shaft of the drive motor, the second gear (22) being in mesh with the first gear (21);

the first slide (32) is configured as a first toothed rack and meshes with the first gearwheel (21), and the second slide (33) is configured as a second toothed rack and meshes with the second gearwheel (22).

5. The seat headrest sound system as claimed in claim 3, wherein the first half-arc portion (311) and the second half-arc portion (312) are formed with a first slide groove and a second slide groove, respectively, extending in respective extending directions;

the seat headrest sound system further comprises a first sliding block and a second sliding block, wherein the first sliding block is connected with the first sliding rod (32) and is slidably arranged in the first sliding groove; the second sliding block is connected with the second sliding rod (33) and is arranged on the second sliding groove in a sliding mode.

6. The seat headrest sound system according to claim 5, wherein both ends of the first and second slide grooves in the respective extending directions are closed;

when the first sliding block abuts against the end part, far away from the second half-arc part (312), of the first sliding groove, the sound box (1) connected to the first sliding rod (32) is located at the listening position, and when the first sliding block abuts against the end part, close to the second half-arc part (312), of the first sliding groove, the sound box (1) connected to the first sliding rod (32) is located at the accommodating position;

when the second sliding block abuts against the end portion, far away from the first semi-arc portion (311), of the second sliding groove, the sound box (1) connected to the second sliding rod (33) is located at the listening position, and when the second sliding block abuts against the end portion, close to the first semi-arc portion (311), of the second sliding groove, the sound box (1) connected to the second sliding rod (33) is located at the accommodating position.

7. The seat headrest sound system as claimed in claim 1, wherein said acquisition module (20) is a DMS camera and/or an OMS camera.

8. A seat, characterized in that the seat comprises a seat headrest, a seat body and a seat headrest sound system as claimed in any one of claims 1 to 7, the seat headrest being provided with an opening through which the sound (1) is arranged.

9. A vehicle characterized in that it comprises a seat according to claim 8.

10. A control method of a seat headrest audio system, characterized in that the control method is applied to the seat headrest audio system according to any one of claims 1 to 7, the control method comprising:

and controlling a driving mechanism (2) to drive the sound box (1) to move to a listening position corresponding to the sitting position of a driver at the current moment.