Audio playing device in vehicle and vehicle

Abstract

The utility model provides an audio playing device in a vehicle and the vehicle, and the device comprises a state button which is disposed in the vehicle; the camera is arranged in the vehicle and is used for shooting an in-vehicle image in the vehicle; the first connecting end of the control unit is connected with the signal transmission end of the state button, the second connecting end of the control unit is connected with the signal transmission end of the camera, and the third connecting end of the control unit is connected with the loudspeaker control end of a bus communication unit of the vehicle. And a fourth connecting end of the control unit is connected with an Android application program interface of the vehicle.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to an audio playback device and vehicle for use in a vehicle. Background Technology

[0002] Currently, the demand for long-distance driving is increasing. Drivers and passengers often experience fatigue during long drives or journeys. In long-distance transport scenarios, drivers may stop at service areas for a short rest to avoid fatigue. Passengers can adjust the seat back angle or lie down in the cabin behind the cab to rest. However, service areas usually have other vehicles and people, creating noise that can affect rest. Utility Model Content

[0003] In view of this, the purpose of this application is to provide an in-vehicle audio playback device and a vehicle, which can install a status button and a camera inside the vehicle, with both the camera and the status button connected to a control unit. When the status button is pressed, it informs the control unit that the occupants in the vehicle actively request to enter a resting state. Then, the control unit begins to analyze the in-vehicle images captured by the camera, and when it recognizes that the occupants are in a resting posture, it sends a speaker turn-on signal to the vehicle's bus communication unit and sends an audio playback signal for a music playback application to the Android application interface, so that the bus communication unit controls the in-vehicle speakers to turn on and the music playback application to play the audio corresponding to the resting state. This solves the technical problem in the prior art that vehicles cannot provide a good resting environment, and achieves the technical effect of improving the rest quality of occupants in the vehicle and improving the user experience.

[0004] In a first aspect, embodiments of this application provide an audio playback device for use in a vehicle. The device includes: a status button disposed inside the vehicle; a camera disposed inside the vehicle for capturing images of the vehicle interior; and a control unit, wherein a first connection terminal of the control unit is connected to a signal transmission terminal of the status button, a second connection terminal of the control unit is connected to a signal transmission terminal of the camera, a third connection terminal of the control unit is connected to a speaker control terminal of a vehicle bus communication unit, and a fourth connection terminal of the control unit is connected to an Android application interface of the vehicle. The control unit is configured to: receive a status prompt signal indicating a resting state when the status button is pressed; control the camera to turn on and receive the images of the vehicle interior; when it detects that a person in the vehicle interior is in a resting posture in the images, send a speaker-on signal to the bus communication unit; and send an audio playback signal for a music playback application to the Android application interface.

[0005] Optionally, the camera includes multiple cameras, including a front camera and a rear camera. The front camera is used to capture images of people inside the cockpit, and the rear camera is used to capture images of people in the cabin behind the cockpit. The front camera is located at any of the following locations: on a pillar on at least one side of the windshield in front of the cockpit, in the rearview mirror, or in the roof. The rear camera is located at any of the following locations: on a pillar on at least one side between the front and rear seats of the cockpit, on a pillar on at least one side of the rear windshield of the vehicle, or in the roof.

[0006] Optionally, the device further includes a data conversion unit disposed between the second connection terminal of the control unit and the signal transmission terminal of the camera, for converting the video signal of the in-vehicle image captured by the camera into a digital signal and transmitting the digital signal to the second connection terminal of the control unit.

[0007] Optionally, the device further includes a camera switch button, the signal transmission end of which is connected to the fifth connection end of the control unit, for sending a switch control signal for the camera to the control unit. The control unit is configured to: after receiving the status prompt signal, the fifth connection end receives an open prompt signal corresponding to when the camera switch button is pressed, and sends a camera open signal to the signal transmission end of the camera.

[0008] Secondly, this application also provides a vehicle, the vehicle including: a speaker; an Android application interface configured to: control a music playback application pre-installed in the vehicle system to play a preset audio file when receiving the audio playback signal, the preset audio file corresponding to the rest state; a bus communication unit, the first control terminal of the bus communication unit being connected to the signal transmission terminal of the speaker, configured to: control the speaker to turn on when receiving the speaker turn-on signal, so that the speaker plays the preset audio file; and an audio playback device as described in the first aspect or any possible implementation of the first aspect.

[0009] Optionally, the vehicle includes a display screen, and the second control terminal of the bus communication unit is connected to the control terminal of the display screen for displaying the audio playback interface corresponding to the preset audio file.

[0010] Optionally, the display screen includes a central control display screen and / or a rear-row display screen.

[0011] Optionally, the speakers include multiple speakers, including front speakers and rear speakers. The front speakers are arranged around the vehicle's central control screen or on the doors corresponding to the driver's seat and the front passenger seat, respectively. The rear speakers are arranged on the doors corresponding to both sides of the cabin.

[0012] Optionally, the control unit is configured to: determine the location of the occupants in the in-vehicle image, and control the corresponding target speaker to open according to the location when the speaker-open signal is received, wherein the target speaker includes a front speaker and / or a rear speaker.

[0013] Optionally, the vehicle includes a commercial van.

[0014] This application provides an in-vehicle audio playback device and a vehicle. The device includes: a status button disposed inside the vehicle; a camera disposed inside the vehicle for capturing images of the vehicle interior; and a control unit, wherein a first connection terminal of the control unit is connected to the signal transmission terminal of the status button, a second connection terminal of the control unit is connected to the signal transmission terminal of the camera, a third connection terminal of the control unit is connected to the speaker control terminal of the vehicle's bus communication unit, and a fourth connection terminal of the control unit is connected to the vehicle's Android application interface. The control unit is configured to: receive a status prompt signal indicating a resting state when the status button is pressed; control the camera to turn on and receive the in-vehicle images; when it detects that an occupant in the in-vehicle images is in a resting posture, send a speaker-on signal to the bus communication unit; and send an audio playback signal for a music playback application to the Android application interface. By installing a status button and a camera inside the vehicle, both connected to a control unit, pressing the status button signals to the control unit that the occupants are actively requesting to enter a resting state. The control unit then analyzes the in-vehicle images captured by the camera. Upon recognizing that the occupants are in a resting posture, it sends a speaker-on signal to the vehicle's bus communication unit and an audio playback signal for a music player application to the Android application interface. This causes the bus communication unit to control the in-vehicle speakers to turn on and the music player application to play the audio corresponding to the resting state. This solves the technical problem in existing technologies where vehicles cannot provide a good resting environment, achieving the technical effect of improving the rest quality of occupants and enhancing the user experience.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of the structure of an in-vehicle audio playback device provided in an embodiment of this application is shown.

[0018] Figure 2 A schematic diagram of the structure of a vehicle provided in an embodiment of this application is shown. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. Based on the embodiments of this application, every other embodiment obtained by those skilled in the art without inventive effort falls within the scope of protection of this application.

[0020] In the existing technology, due to the large number of situations requiring long-distance driving, drivers or passengers may need to find service areas for short rests during the journey to alleviate fatigue.

[0021] To address the aforementioned problems, this application provides an in-vehicle audio playback device and a vehicle. By installing a status button and a camera inside the vehicle, both connected to a control unit, pressing the status button informs the control unit that the occupants are actively requesting a resting state. The control unit then analyzes the in-vehicle images captured by the camera. Upon recognizing that the occupants are in a resting posture, it sends a speaker-on signal to the vehicle's bus communication unit and an audio playback signal for a music playback application to the Android application interface. This causes the bus communication unit to control the in-vehicle speakers to turn on and the music playback application to play the audio corresponding to the resting state. This solves the technical problem in the prior art where vehicles cannot provide a good resting environment, achieving the technical effects of improving the rest quality of occupants and enhancing the user experience. Specifically:

[0022] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of an in-vehicle audio playback device provided in an embodiment of this application. Figure 1 As shown in the embodiment of this application, the in-vehicle audio playback device includes: a status button 101, disposed inside the vehicle; a camera 102, disposed inside the vehicle, used to capture images inside the vehicle; and a control unit 103, wherein a first connection terminal of the control unit is connected to the signal transmission terminal of the status button, a second connection terminal of the control unit is connected to the signal transmission terminal of the camera, a third connection terminal of the control unit is connected to the speaker control terminal of the vehicle's bus communication unit, and a fourth connection terminal of the control unit is connected to the vehicle's Android application interface.

[0023] The control unit is configured to: receive a status prompt signal indicating that the user has entered a resting state when the status button is pressed; control the camera to turn on and receive the in-vehicle image; when the occupants in the in-vehicle image are in a resting posture, send a speaker turn-on signal to the bus communication unit; and send an audio playback signal for the music playback application to the Android application interface.

[0024] For example, when the status button is pressed, it indicates that the occupants are in a resting state. After confirming that the occupants are in a resting state, pressing the status button again indicates that the occupants are out of the resting state. The resting posture is set to a lying position.

[0025] Furthermore, when the status button is pressed, a status prompt signal is sent through the information transmission terminal. Upon receiving the status prompt signal, the first connection terminal of the control unit can send an open prompt signal to the camera's signal transmission terminal through the second connection terminal to control the camera to open. The camera then begins capturing images of the vehicle's interior and transmits these images to the second connection terminal of the control unit. The control unit then begins recognizing the posture of the occupants in the interior images. If the posture is determined to be lying down, a speaker open signal is sent to the vehicle's bus communication unit to turn on the speakers. Simultaneously, an audio playback signal is sent to the vehicle's Android application interface for the music playback application to play a preset audio file corresponding to the resting state.

[0026] In other words, the vehicle's system is an Android system, and the fourth connection terminal of the control unit controls the music playback application installed in the vehicle system to open and play the preset audio file corresponding to the rest state by connecting to the vehicle's Android application package (APK).

[0027] For example, the preset audio files include custom playlists set by the occupants of the vehicle or pre-configured playlists.

[0028] For example, multiple playlists can be pre-set in a music playback application, each playlist corresponding to a description tag that indicates the music style of the playlist. Furthermore, a weather application can be installed within the vehicle system. The fourth connection terminal of the control unit obtains the current weather status provided by the weather application through an Android application interface. The control unit can then use a pre-configured mapping table between the current weather status and playlists to select the playlist corresponding to the current weather status as the preset audio file.

[0029] In other words, if multiple playlists include soothing music playlists, relaxing music playlists, and rainy day-appropriate music playlists, the mapping table can be set so that the preset audio files for rainy weather are the rainy day-appropriate music playlists, the preset audio files for sunny weather are the soothing music playlists, and the preset audio files for cloudy weather are the relaxing music playlists. This allows for the playback of weather-appropriate preset audio files based on the weather and the user's resting state.

[0030] For example, multiple playlists can also be tagged according to combinations such as date, morning, afternoon, evening, sunny, rainy, windy, and temperature. The playlists can be searched based on the tags corresponding to the current time, location, and weather, combined with the user's frequently listened-to preferences, and the searched playlists can be used as preset audio files.

[0031] The camera includes multiple cameras, including a front camera and a rear camera. The front camera is used to capture images of people inside the cockpit, and the rear camera is used to capture images of people in the passenger cabin behind the cockpit. The front camera is located at any of the following locations: on a pillar on at least one side of the windshield in front of the cockpit, in the rearview mirror, or in the roof. The rear camera is located at any of the following locations: on a pillar on at least one side between the front and rear seats of the cockpit, on a pillar on at least one side of the rear windshield of the vehicle, or in the roof.

[0032] In other words, multiple cameras are used to capture images of the front and rear seats of the vehicle, respectively, to cover the entire interior. This allows the cameras to capture images of occupants in any reclining position. Specifically, the front camera captures images of occupants in the driver's and front passenger's seats, while the rear camera captures images of occupants in the space behind the driver's seat, such as those in the other two seats.

[0033] For example, the front camera can be mounted on at least one pillar of the windshield in front of the driver's cabin (A-pillar), or on the rearview mirror, or on the ceiling above the driver's cabin, thereby capturing images of each person seated in the driver's cabin. The rear camera can be mounted on at least one pillar between the front and rear seats of the driver's cabin (B-pillar), or on at least one pillar of the rear windshield of the vehicle (C-pillar), or on the ceiling above the driver's cabin, thereby capturing images of each person seated in the driver's cabin.

[0034] like Figure 1 As shown, the device also includes a data conversion unit 104, which is disposed between the second connection terminal of the control unit and the signal transmission terminal of the camera. The data conversion unit is used to convert the video signal of the in-vehicle image captured by the camera into a digital signal and transmit the digital signal to the second connection terminal of the control unit.

[0035] In other words, one end of the data conversion unit is connected to the second connection end of the control unit, and the other end of the data conversion unit is connected to the signal transmission end of the camera, so as to convert the video signal of the in-vehicle image captured by the camera into a digital signal, so that the control unit can determine the posture of the people in the vehicle by recognizing the digital signal.

[0036] The device also includes a camera switch button, the signal transmission end of which is connected to the fifth connection end of the control unit, for sending a switch control signal for the camera to the control unit. The control unit is configured to: after receiving the status prompt signal, the fifth connection end receives the corresponding open prompt signal when the camera switch button is pressed, and sends a camera open signal to the signal transmission end of the camera.

[0037] In other words, after receiving the status prompt signal transmitted when the status button is pressed, the control unit also needs to send a camera open signal to the camera's signal transmission terminal when it receives the open prompt signal transmitted when the camera switch button is pressed, so that the camera can start taking pictures of the interior of the vehicle.

[0038] For example, multiple images of people in different seats in lying and sitting positions can be captured in advance using a camera, and the posture of the person in each image can be labeled as sitting or lying. Then, the multiple images can be used as input data for a machine learning model, and the labeled posture of the person can be used as a label to train the model so that the machine learning model can identify whether the user's posture is lying down.

[0039] For example, the spatial specifications of the cockpit and passenger compartment, namely length, width, and height, can be combined to mark the personnel outlines in multiple captured images, thereby indicating the size of the space occupied by the personnel inside the vehicle. Whether the personnel are in a lying position can be confirmed by determining whether the outline falls within the rectangular outline corresponding to a reclining posture. Furthermore, the angle of the seat back can also be used to assist in identifying whether a person is in a reclining posture.

[0040] In other words, existing methods for identifying whether a person is lying down in a vehicle by recognizing their posture are relatively common and will not be elaborated upon here.

[0041] For example, the control unit can be a chip of model X9HP; the data conversion unit can be a chip of model MAX96722, which can perform low-voltage differential signal LVDS transmission. For example, the data conversion unit is connected to the camera via a twisted-pair differential cable, and the camera transmits the captured images to the data conversion unit via the FPD-LINK protocol (serial bus scheme).

[0042] Based on the same application concept, this application also provides a vehicle corresponding to the audio playback device provided in the above embodiments. Since the principle of the vehicle in this application is similar to that of the audio playback device in the above embodiments of this application, the implementation of the vehicle can refer to the implementation of the above embodiments, and the repeated parts will not be described again.

[0043] Please see Figure 2 , Figure 2 This is a schematic diagram of the structure of a vehicle provided in an embodiment of this application. Figure 2 As shown, the vehicle includes: a speaker 201; an Android application interface 202 configured to control a music playback application pre-installed in the vehicle system to play a preset audio file when the audio playback signal is received, the preset audio file corresponding to the rest state; a bus communication unit 203, the first control terminal of which is connected to the signal transmission terminal of the speaker, configured to control the speaker to turn on when the speaker turn-on signal is received, so that the speaker plays the preset audio file; and an audio playback device 204 in the vehicle as described above.

[0044] In other words, the Android application programming interface 202 is the APK interface for the music playback application, through which the music playback application can be controlled to open or close. Furthermore, when the Android application programming interface 202 receives an audio playback signal from the fourth connection terminal of the control unit in the audio playback device, it controls the music playback application pre-installed in the vehicle system to play a preset audio file to provide music to the occupants. Additionally, the vehicle's bus communication unit also needs to control the speaker to open when it receives a speaker-on signal from the third connection terminal of the control unit. Therefore, the speaker can only play the preset audio file when it is open and the music playback application is playing it synchronously. The speaker volume also needs to be controlled within a preset volume range corresponding to the resting state to prevent disturbing the occupants.

[0045] For example, the bus communication unit is a CAN FD chip.

[0046] The vehicle includes a display screen, and the second control terminal of the bus communication unit is connected to the control terminal of the display screen for displaying the audio playback interface corresponding to the preset audio file. The display screen includes a central control display screen and / or a rear-seat display screen.

[0047] The central control display screen is located in the center console between the driver's seat and the front passenger seat, while the rear display screen is located on the side of the driver's seat and / or the front passenger seat facing the rear seats.

[0048] In other words, when the Android application interface receives an audio playback signal sent by the audio playback device, it will control the music playback application to open. At this time, the central control display and / or the rear display will show the page where the music playback application is opened, and the audio playback interface will be displayed when playing a preset audio file.

[0049] For example, the display screen can also display scene images corresponding to weather, time, season, etc., and when the display screen displays the page of the music playback application that has been opened, it can receive music selected by the people in the car and play it, while filtering out more dynamic music or scene images.

[0050] The speaker includes multiple speakers, including front speakers and rear speakers. The front speakers are located around the vehicle's central control screen or on the doors corresponding to the driver's seat and the front passenger seat, respectively. The rear speakers are located on the doors corresponding to both sides of the cabin.

[0051] The control unit is configured to: determine the location of the occupants in the in-vehicle image, and control the corresponding target speaker to open according to the location when the speaker opening signal is received, wherein the target speaker includes a front speaker and / or a rear speaker.

[0052] In other words, the speakers can be placed near the central control screen or on the vehicle doors. Therefore, when the location of an occupant is detected—for example, if the driver's seat is reclined—the speakers around the central control screen or on the driver's side door can be activated. If there are multiple occupants, and occupants are reclining in both the front and rear seats, both the front and rear speakers will be activated.

[0053] The vehicles mentioned include commercial trucks, and the rear seats of commercial trucks are generally set up as rest areas where drivers can lie down and rest. When the rear camera detects that a person in the rest area is lying down, a preset audio file is played to provide a better resting environment for the driver.

[0054] For example, when the control unit detects that the status button has been pressed, it also needs to control the camera to open when it detects that the vehicle is in the parking gear (P gear), the vehicle door locks are locked, the vehicle power is on, and the power battery charge is greater than or equal to 40%. When it detects that the person in the in-vehicle image is in a lying position, it controls the speaker to play a preset audio file pre-set in the music playback application, so as to reconfirm that the person in the vehicle needs to enter a resting state by parking the vehicle and locking the door. This process is performed when the power is sufficient to prevent affecting the vehicle's subsequent power demand.

[0055] For example, the vehicle gateway transmits the vehicle's gear position, whether the door locks are locked, and the power battery charge to the control unit via the vehicle's CAN bus (Controller Area Network bus). This allows the control unit to simultaneously determine that the vehicle is in park (P) gear, the door locks are locked, and the vehicle's power is on and the power battery charge is greater than or equal to 40% when the status button is pressed, and then control the camera to open.

[0056] Furthermore, this application uses an infrared camera and control unit installed inside the vehicle to identify whether there are people inside the vehicle, whether the person is in a reclining, sitting, or leaning posture, and whether the posture is a safe posture. When a person is detected to be in a reclining posture, the application controls the playback of fatigue-relieving music to create a restful atmosphere for the people inside the vehicle, thereby more effectively relieving fatigue, reducing the occurrence of driving accidents, and increasing the driver's concentration while driving.

[0057] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0058] It should also be noted that, unless otherwise explicitly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0059] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. An audio playback device for use in a vehicle, characterized in that, The device includes: The status button is located inside the vehicle. A camera, installed inside the vehicle, is used to capture images of the vehicle's interior. The control unit has a first connection terminal connected to the signal transmission terminal of the status button, a second connection terminal connected to the signal transmission terminal of the camera, a third connection terminal connected to the speaker control terminal of the vehicle's bus communication unit, and a fourth connection terminal connected to the vehicle's Android application interface. The control unit is configured to: receive a status prompt signal indicating that the user has entered a resting state when the status button is pressed; control the camera to turn on and receive the in-vehicle image; when the occupants in the in-vehicle image are in a resting posture, send a speaker turn-on signal to the bus communication unit; and send an audio playback signal for the music playback application to the Android application interface.

2. The apparatus according to claim 1, characterized in that, The camera system includes multiple cameras, including front and rear cameras. The front cameras are used to capture images of people inside the cockpit, and the rear cameras are used to capture images of people in the passenger cabin behind the cockpit. The front camera is located in any of the following locations: on a pillar on at least one side of the windshield in front of the cockpit, in the rearview mirror, or in the roof. The rear camera is located in any of the following locations: on a pillar on at least one side between the front and rear seats of the driver's cabin, on a pillar on at least one side of the rear windshield of the vehicle, or on the roof.

3. The apparatus according to claim 1, characterized in that, The device also includes a data conversion unit. The data conversion unit is located between the second connection terminal of the control unit and the signal transmission terminal of the camera, and is used to convert the video signal of the in-vehicle image captured by the camera into a digital signal, and transmit the digital signal to the second connection terminal of the control unit.

4. The apparatus according to claim 1, characterized in that, The device also includes a camera switch button, the signal transmission end of which is connected to the fifth connection end of the control unit, for sending a switch control signal for the camera to the control unit. The control unit is configured to, upon receiving the status prompt signal, send a camera-on signal to the camera's signal transmission terminal after receiving the on / off prompt signal corresponding to the camera switch button being pressed.

5. A vehicle, characterized in that, The vehicles include: speaker; The Android application interface is configured to control a music playback application pre-installed in the vehicle system to play a preset audio file when the audio playback signal is received, the preset audio file corresponding to the rest state; A bus communication unit, wherein the first control terminal of the bus communication unit is connected to the signal transmission terminal of the speaker, is configured to: control the speaker to turn on when a speaker-on signal is received, so that the speaker plays the preset audio file; The audio playback device as described in any one of claims 1 to 4.

6. The vehicle according to claim 5, characterized in that, The vehicle includes a display screen, and the second control terminal of the bus communication unit is connected to the control terminal of the display screen for displaying the audio playback interface corresponding to the preset audio file.

7. The vehicle according to claim 6, characterized in that, The display screen includes a central control display screen and / or a rear display screen.

8. The vehicle according to claim 5, characterized in that, The speaker system includes multiple speakers, including front speakers and rear speakers. The front speakers are positioned around the vehicle's central control screen or on the doors corresponding to the driver's and passenger's seats, respectively. The rear speakers are located on the corresponding doors on both sides of the cabin.

9. The vehicle according to claim 8, characterized in that, The control unit is configured to: determine the location of the occupants in the in-vehicle image, and, upon receiving the speaker-on signal, control the corresponding target speaker to turn on based on the location. The target loudspeaker includes a front loudspeaker and / or a rear loudspeaker.

10. The vehicle according to claim 5, characterized in that, The vehicles include commercial trucks.

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