CN214228463U

CN214228463U - Integrated audio and video interaction equipment

Info

Publication number: CN214228463U
Application number: CN202023352332.6U
Authority: CN
Inventors: 李建斌; 周跃兵; 吴国杰; 郑樾; 陈雪兵; 牟刚
Original assignee: Aimyunion Technology Ltd
Current assignee: Aimyunion Technology Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-09-17
Anticipated expiration: 2030-12-31

Abstract

The application relates to the technical field of audio and video interaction equipment and provides integrated audio and video interaction equipment. The integral type audio and video interaction equipment that this application provided includes: the supporting frame is arranged on the base; the supporting frame is provided with a display screen and a sound system provided with a plurality of groups of loudspeakers and used for playing video pictures and audio information respectively; the display screen and the audio system are connected with a circuit board integrating an audio and video processing function, and the circuit board comprises a main board module and an effector which are designed in an isolated mode; the main board module is connected with a driving circuit of the display screen, and the effector is connected with the sound system; the mainboard module integrates functions of a television and a jukebox and is used for driving the display screen to display by the same screen digital interface. The scheme provided by the application is beneficial to achieving the expected sound effect.

Description

Integrated audio and video interaction equipment

Technical Field

The application relates to the technical field of audio and video interaction equipment, in particular to integrated audio and video interaction equipment.

Background

With the increasing abundance of entertainment life, the hearing enjoyment in daily life is also receiving much attention. In order to better realize the hearing enjoyment, in some entertainment places, such as KTV, conference rooms, restaurants and other scenes, a variety of audio devices and video playing devices are generally configured to realize the audio-video interactive use function.

However, in each of the above-mentioned scenes, various devices, such as a song-ordering machine, a television, a sound box, a loudspeaker and the like, need to be arranged according to use requirements, and the field installation is complicated and troublesome. When users use the devices, the devices can be effectively adjusted only by a certain professional knowledge, and the operation is complicated; and every equipment all has respective power supply and interconnecting link, and the on-the-spot problem that causes the circuit confusion is unfavorable for using in above-mentioned various scenes to reach the audio effect of expectation.

SUMMERY OF THE UTILITY MODEL

The problem of the audio that the scattered combination that causes to above-mentioned current stereo set equipment can not unified control and regulation is provided to this application, an integral type audio and video interaction equipment.

In a first aspect, the present application provides an integrated audio/video interactive device, which includes: the supporting frame is arranged on the base;

the supporting frame is provided with a display screen and a sound system provided with a plurality of groups of loudspeakers and used for playing video pictures and audio information respectively;

the display screen and the audio system are connected with a circuit board integrating an audio and video processing function, and the circuit board comprises a main board module and an effector which are designed in an isolated mode;

the main board module is connected with a driving circuit of the display screen, and the effector is connected with the sound system;

the mainboard module integrates functions of a television and a jukebox and is used for driving the display screen to display by the same screen digital interface;

the main board module receives an input audio signal, transmits the audio signal to an effector after isolation, and the effector processes the audio signal and plays the audio signal through the sound system;

the display screen, the sound system and the circuit board are internally provided with independent power supply modules, and each power supply module is powered by a power supply system.

In an alternative embodiment of the first aspect, the base is of a mobile design;

the supporting frame comprises two supporting columns arranged on the base; the sound system comprises a first sound box and a second sound box;

the display screen is arranged in the middle of the supporting column, and the first sound box and the second sound box are arranged at the bottom and the top of the supporting column respectively.

In an optional embodiment of the first aspect, a plurality of speakers with different operating frequencies are built in the first sound box;

a plurality of audio signal output channels are arranged on the main board module, and each audio signal output channel outputs an audio signal with a specific frequency to a corresponding loudspeaker;

the loudspeakers are arranged in the first sound box according to a set distance and a set relative position, and the loudspeakers are arranged according to a set emission angle;

each loudspeaker plays audio signals under the control of the main board module, and the loudspeakers generate a superposed sound field with a specific frequency characteristic range in a set position area away from the front side of the integrated audio and video interaction equipment under the interaction of the arrangement and the emission angle.

In an alternative embodiment of the first aspect, the first loudspeaker box comprises two sets of loudspeaker sets; wherein each loudspeaker combination comprises at least one high frequency loudspeaker and one medium and low frequency loudspeaker;

the two groups of loudspeaker assemblies are respectively arranged on the left side and the right side of the first sound box at a set central distance; wherein the two sets of loudspeakers are combined to form a left channel and a right channel, respectively.

In an optional embodiment of the first aspect, the first sound box is installed at a first set height of a support frame of the integrated audio/video interactive device;

the value of the center distance satisfies: the two sets of speaker combinations produce a superimposed sound field of a specific frequency characteristic range at a first elevation position of the set position region.

In an optional embodiment of the first aspect, a value of the center distance satisfies the following relationship:

L＝2*R*tanα

wherein, L is the central distance of the two groups of loudspeaker combinations, alpha is the stereo listening angle, and R is the distance from the first loudspeaker box to the set position area.

In an optional embodiment of the first aspect, a value of a distance R from the first sound box to the set position region satisfies the following relationship:

and is

H is a first set height of the first sound box, H is the first height, D is the distance from the integrated audio and video interaction equipment to the set position area, and beta is the maximum sound axis depression angle.

In an optional embodiment of the first aspect, the unitary audio-video interactive device further includes:

a low-frequency loudspeaker is arranged in the second sound box, and forms a low-frequency sound channel;

wherein the second set height is less than the first set height;

and a set range elevation angle is formed between the low-frequency loudspeaker and the horizontal plane where the low-frequency loudspeaker is located, so that in the set position area, the low-frequency sound effect of the low-frequency loudspeaker and the sound field with the specific frequency combined by the two groups of loudspeakers form a superposed sound field.

In an optional embodiment of the first aspect, in the integrated audio/video interactive device, the power supply system includes a high voltage power supply board; the high voltage power supply board includes: an interference suppression circuit connected to the power line, and a splitter divided into a plurality of parts;

the interference suppression circuit is matched with the sensitive frequencies of the main board module and the power amplification board;

the output end of the interference suppression circuit is connected with the deconcentrator;

the main board module and the power amplifier board are respectively provided with a switching power supply circuit;

the main board module and the power amplifier board are respectively connected with one output end of the deconcentrator through a switching power supply circuit, and each output end of the deconcentrator corresponds to one sub-power supply;

the interference suppression circuit is used for suppressing power supply noise corresponding to audio sensitive frequency bands of the main board module and the power amplification board in the power supply signal; the switching power supply circuit is used for reducing the voltage of the sub power supply and filtering the interference noise in the sub power supply.

In an optional embodiment of the first aspect, the high voltage power strip further comprises: the standby power supply circuit, the control circuit and the power switch are connected with a power line;

the standby power supply circuit is connected with the power switch through the control circuit, and the power switch is connected between a power line and the interference suppression circuit;

the standby power supply circuit outputs power to the control circuit, and the control circuit outputs a control signal to the power switch; wherein the power switch comprises one or more of a manual control switch, an automatic timing switch and a remote network control switch.

In an optional embodiment of the first aspect, the motherboard module is provided with an audio signal input interface, a video signal output interface, and at least one source data interface;

the audio input interface is connected with a microphone or an external sound source, the video signal output interface is connected with a display screen, and the source end data interface is connected with a tail end data interface of the power amplification board through a multi-core cable;

the high-voltage power supply board is connected with the main board module, the power amplification board and the display screen, and the power amplification board is connected with at least one loudspeaker of the sound box;

the main board module integrates the functions of a television and a song requesting machine, and is used for outputting video signals to the display screen, driving the display screen to display, and outputting control signals and audio signals to the power amplifier board;

the power amplifier board is used for executing the operation corresponding to the control signal, amplifying the audio signal and driving a loudspeaker of the sound box to play the audio signal.

In an alternative embodiment of the first aspect, the sound system includes a power amplifier board; the power amplifier board is provided with a power amplifier control circuit for controlling power up and down;

the switch power supply circuit of the power amplification board is also connected with a power amplification power supply switch;

the power amplifier control circuit is connected with the power amplifier power switch;

the power amplifier control circuit comprises: the circuit comprises a delay circuit, a detection comparison circuit, a discharge circuit and an execution circuit; the delay circuit is connected with a power supply and is connected with power amplifier equipment through an execution circuit; the detection comparison circuit is connected with the power supply and the discharge circuit; the discharge circuit is connected with the delay circuit;

when the power amplifier is powered on, the delay circuit is started in a delay mode in a charging mode, and after the charging is finished, the execution circuit is triggered to output a control signal to start the power amplifier device, so that the power amplifier device is powered on and protected;

when the power is off, the detection comparison circuit quickly detects the voltage reduction of the power supply, and a discharge circuit is started to discharge the time delay circuit; and the delay circuit triggers the execution circuit to output a protection signal to close the power amplifier equipment after the discharge is finished, and the power amplifier equipment is subjected to power-down protection.

In an optional embodiment of the first aspect, the main board module is further connected to a live camera, an AI camera, and a sound pickup;

the live broadcasting camera is used for shooting video stream in a set space range and transmitting the video stream to the mainboard module;

the sound pick-up is used for directionally speaking users by utilizing an AI algorithm and picking up the speaking contents of the users to obtain audio streams to be transmitted to the main board module;

the main board module is used for synthesizing the video stream and the audio stream into an audio/video file and sending the audio/video file to a background server through a network;

the background server is used for transmitting the audio and video file to other audio and video integrated machines so as to carry out real-time audio and video interaction and live broadcast between the audio and video integrated machine and other audio and video integrated machines;

the AI camera is used for shooting user image pictures in a set space range;

the AI camera is connected with the main board module through the AI processing module;

the AI processing module converts the user image picture into user information and/or limb movement information through an AI algorithm;

the main board module is used for identifying and positioning the face of a user according to the user information and controlling the shooting angle and the focal length of the live broadcast camera; or the user can play a somatosensory interactive game according to the limb movement information.

In an optional embodiment of the first aspect, the unitary audio-video interactive device further includes: the touch screen is connected with the mainboard module;

the touch screen is used for receiving touch operation of a user, generating touch data, sending the touch data to the mainboard module, and outputting control instructions to other parts of the integrated audio and video interaction equipment through the mainboard module.

The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:

the integrated audio and video interaction device provided by the embodiment of the application can obtain audio signal combinations of various specific frequencies according to the classification of audio sources and the decoding of the audio sources, and can generate a specific superposed sound field in a set position area according to the arrangement and emission angles of set loudspeakers, so that the designed playing effect of the audio sources can be furthest restored in the set position area, or a certain expected sound effect can be achieved.

The integrated audio and video interaction equipment that has combined audio device and display screen and formed that this application provided has formed a miniature audio and video entertainment system, can conveniently remove and realize entertainment function to the place of difference, and moreover, this integrated audio and video interaction equipment realizes carrying out integration overall planning to the electricity connection, helps solving and uses the scene to cause the chaotic problem of circuit.

Furthermore, the power supply device is characterized in that the power supply device comprises an independent high-voltage power supply board, a main board module and at least one power amplification board; the main board module is provided with an audio signal input interface, a video signal output interface and at least one source end data interface, and the source end data interface is connected with the power amplification board through a multi-core cable; in the technical scheme, the hardware integration level of each board card and each circuit is high, the circuit wiring is simple, the interference of the ground loop effect inside the cable on the audio signal is reduced, a better audio playing effect is achieved, and the method and the device can adapt to the field deployment of multi-scene application.

Furthermore, the power amplifier control circuit for controlling power up and down is arranged on the power amplifier board, so that the power amplifier board can be subjected to mute processing and turn-off processing, the influence of impact signals generated during the on-off process on the power amplifier board and the loudspeaker is avoided, and the safety of the power amplifier board and the loudspeaker is protected.

Further, realize the live function of networking through live camera, AI camera, adapter, bar code scanner, network communication module etc. the user can utilize audio and video all-in-one equipment to carry out the live interaction, carries out remote control to audio and video all-in-one equipment, carries out the interdynamic etc. with other audio and video all-in-one equipment, has promoted user's use and has experienced. And the peripheral equipment is connected through the peripheral equipment interface, so that the relevant information can be conveniently input through the peripheral equipment, the audio and video integrated machine equipment is controlled, and the use convenience of the audio and video integrated machine equipment is improved.

Additional aspects and advantages of the application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice.

Drawings

The foregoing and/or additional aspects and advantages will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of an integrated audio/video interaction device provided in an embodiment of the present application;

FIG. 2 is a top view of a first speaker box and a person according to an embodiment of the present disclosure;

FIG. 3 is a side view of a first speaker box in a position relationship with a person according to an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view of a first cushioning structure in one embodiment provided herein;

FIG. 5 is a cross-sectional view of a microphone placement structure in an embodiment provided herein;

fig. 6 is a schematic structural diagram of an audio and video all-in-one device circuit according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of an audio-video appliance device circuit according to another embodiment of the present application;

FIG. 8 is a schematic diagram of a multi-core cable connection provided by one embodiment of the present application;

fig. 9 is a schematic structural diagram of a power amplifier control circuit according to an embodiment of the present application;

fig. 10 is a circuit diagram of a power amplifier control circuit provided in the present application.

Detailed Description

The present application is further described with reference to the following drawings and exemplary embodiments, wherein like reference numerals are used to refer to like elements throughout. In addition, if a detailed description of the known art is not necessary to show the features of the present application, it is omitted.

Referring to fig. 1, fig. 1 is a schematic view of an integrated audio/video interaction device provided in an embodiment of the present application.

An embodiment of the application provides an integrated audio-video interactive device 100. The integrated audio and video interactive device 100 comprises a base and a supporting frame arranged on the base; the supporting frame is provided with a display screen and a sound system provided with a plurality of groups of loudspeakers and used for playing video pictures and audio information respectively; the display screen and the audio system are connected with a circuit board integrating an audio and video processing function, and the circuit board comprises a main board module and an effector which are designed in an isolated mode; the main board module is connected with a driving circuit of the display screen, and the effector is connected with the sound system; the mainboard module integrates functions of a television and a jukebox and is used for driving the display screen to display by the same screen digital interface; the main board module receives an input audio signal, transmits the audio signal to an effector after isolation, and the effector processes the audio signal and plays the audio signal through the sound system; the display screen, the sound system and the circuit board are internally provided with independent power supply modules, and each power supply module is powered by a power supply system.

The application provides an integration integral type audio and video interactive device 100 has formed a miniature audio and video entertainment system, can conveniently remove the place that realizes entertainment function to the difference, and in addition, this integral type audio and video interactive device 100 is convenient for realize carrying out integration overall planning to the electricity connection, helps solving and uses the scene to cause the chaotic problem of circuit.

The base is in a movable design; the supporting frame comprises two supporting columns arranged on the base; the sound system comprises a first sound box and a second sound box; the display screen is arranged in the middle of the supporting column, and the first sound box and the second sound box are arranged at the bottom and the top of the supporting column respectively.

The first enclosure 10 is configured to house a plurality of speakers, each corresponding to a specific operating frequency, in the first enclosure 10, and the plurality of speakers may have respective operating frequencies. For different working frequencies, the mainboard module is correspondingly provided with different output channels. The mainboard module decodes the received audio signals to obtain audio signals of each specific frequency, and outputs the audio signals of the specific frequency to the loudspeaker of the corresponding working frequency.

All the speakers are arranged in the first sound box 10 according to the set distance and the set relative position, and each speaker is set according to the set emission angle, so that the audio signals played by the speakers in the first sound box 10 can be superimposed in a set position area on the front side of the integrated audio/video interaction device 100 to form a superimposed sound field. The superposed sound field has specific frequencies of all output sound effects and a specific radiation range.

The sound equipment that this application provided can arrange a plurality of different operating frequency speakers of being connected with the mainboard module according to the range of setting for and set up with launch angle, make this sound equipment produce the superimposed sound field that has specific frequency and specific range in the settlement position region of integral type audio frequency video interactive equipment 100 front side, thereby, the sound equipment that provides according to the technical scheme of this application can arrange through the range of each speaker and the disposable combination regulation of launch angle, acquire the superimposed sound field of specific frequency in settlement position region, the difficulty that needs control respectively and adjust different sound equipment has been avoided.

Two sets of loudspeaker assemblies 11 are provided within the first enclosure 10. A set of loudspeaker assemblies 11 may comprise a plurality of loudspeakers of different operating frequencies, in this embodiment each set of loudspeaker assemblies 11 comprises at least one tweeter 12 and one mid-bass loudspeaker 13.

In the present embodiment, the distance between the centers of the two sets of speaker assemblies 11 is named as the center distance. The two sets of speaker assemblies 11 are respectively disposed at the left and right sides of the first sound box 10 with a predetermined center distance. Moreover, the arrangement of the speakers of the two sets of speaker assemblies 11 is mirror-symmetric, and each speaker in each set of speaker assemblies 11 acquires an audio signal with a corresponding operating frequency from a channel corresponding to the main board module, respectively forms a left channel and a right channel, and generates a superimposed sound field with a specific frequency to a set position area according to a set emission angle. In the embodiment of the application, according to the classification of the audio sources, the audio signal combination of each specific frequency is obtained by decoding the audio sources, and according to the arrangement and the emission angle of the set loudspeakers, a specific superposed sound field is generated in the set position area, so that the designed playing effect of the audio sources can be furthest restored in the set position area, or a certain expected sound effect is achieved.

For the same channel, i.e. the left channel or the right channel, the tweeter 12 and the mid-woofer 13 are brought into close proximity to each other, so as to obtain a better axial response and a directional response in the horizontal and vertical directions.

An acoustic wave diffuser (not shown) is provided for the tweeter 12 in the present embodiment, wherein the horizontal direction angle of the acoustic wave diffuser is 90 ° to 150 °, the vertical direction angle is 60 ° to 120 °, and the center axis of the tweeter 12 is 0 °, so that the frequency response deviation is maintained within the 5DB fluctuation range.

The first sound box 10 is an open sound box, and the first sound box 10 is further provided with a leading type inverter tube 14, and the leading type inverter tube 14 is arranged at the inner side position of the middle and low frequency loudspeaker 13. The inverter tube 14 is oriented in the same direction as the mid-low frequency speaker 13. And 1-2 inverter tubes 14 are respectively arranged on the left and right sound channels. When there is only one inverter tube 14 for one channel, the opening of each inverter tube 14 is 2 to 3.5 inches. If there are only two inverter tubes 14 for one sound channel, the opening of each inverter tube 14 is 1-2 inches, and the distance between the centers of the two inverter tubes 14 is 60-150 mm.

For the first sound box 10 mentioned above, the first sound box is mounted on the first set height of the support frame 20 of the integrated audio-video interactive device 100. The first set height is designed to enable the speaker in the first sound box 10 to form a designed superposed sound field in a set position region according to a set emission angle, so as to obtain a desired sound effect.

Under the condition of the first set height, the center distance between the two groups of loudspeaker assemblies 11 is equal to: the two sets of speaker assemblies 11 on the left and right sides of the first enclosure 10 produce a superimposed sound field of a specific frequency range at a first height position within the set position region.

In order to more clearly illustrate the above-mentioned setting relationship to be satisfied for the position of the first sound box 10, in the following detailed description, the receiving object of the audio signal played by the first sound box 10 is a person, and the first height position is the position of the ear of the person.

The frequency band range of the general receiving of the human ears to the sound is 20-20 KHZ, and the frequency band range of the human receiving to the first sound box 10 is 80-20 KHZ for the first sound box 10 due to the built-in high frequency loudspeaker 12 and the middle low frequency loudspeaker 13. Also, since the two sets of speaker combinations 11 form the left and right channels, stereo sound effects can be heard to a person in the set position area. There is a corresponding stereo region for which stereo sound effects can be received. According to the repeated tests, the stereo region range that can be accepted is a range of stereo listening angles at both sides of the centers of the speakers respectively located in the left channel and the right channel, i.e., the two sets of speaker sets 11 in the first enclosure 10.

2-3, FIG. 2 is a top view of a first speaker box and a person according to an embodiment of the present disclosure; fig. 3 is a side view of the first sound box 10 according to the embodiment of the present disclosure in a position relationship with a person.

As shown in fig. 2, in order to make the audio signals played by the two sets of speaker assemblies 11 in the first sound box 10 be heard by the ears of the person located in the set position area where the point Y is located, the center distances of the two sets of speaker assemblies 11 have a spatial relationship with the stereo listening angle and the distance of the first sound box 10 from the set position area.

Specifically, the value of the center distance satisfies the following relationship:

L＝2*R*tanα (1)

wherein L is the center distance of the two sets of speaker assemblies 11, α is the stereo listening angle, and R is the distance from the first speaker 10 to the set position area.

In the present embodiment, since the audio signal is formed by two sets of speaker assemblies 11 respectively located at the left and right sides of the first sound box 10, that is, the two sets of speaker assemblies 11 are non-concurrent speakers, the radiation points are separated in the vertical or horizontal direction when the frequency band is not used for reproduction. That is, when the left channel tweeter 12 is on the left, the zero-delay plane ZDP axis of this approach is off-axis for listening and pointing to the right toward the left ear of the listener if the tweeter 12 is in the same plane as the mid-low frequency speakers 13. And the right channel which is arranged in a mirror way with the left channel, when the right channel high frequency loudspeaker 12 is positioned at the right side, if the high frequency loudspeaker 12 unit and the middle and low frequency loudspeaker 13 are positioned on the same plane, the zero delay plane ZDP axis of the mode deviates from the listening direction and points to the left to the right ear of the listener, thereby realizing better stereo reproduction effect.

When the distance from the integrated audio-video interactive device 100 to the set position area is 2 meters, the deviation angle of the ZDP axis is 10.5 °, namely, the stereo listening angle is 10.5 °. At this time, the audio signals received at the left and right sides of the set position region on the center axis of the first sound box 10 can achieve the zero-delay effect, and better achieve the stereo reproduction effect.

The distance R from the first sound box 10 to the set position area is determined according to the height relationship between the first set height and the first height of the first sound box 10, and the distance between the integrated audio/video interactive device 100 on which the first sound box 10 is installed and a person in the set position relationship.

Specifically, the value of the distance R from the first sound box 10 to the set position region satisfies the following relationship:

wherein, H is a first set height of the first sound box 10, H is a first height, and D is a distance from the integrated audio/video interaction device 100 to the set position area.

In the present embodiment, in order to match the settings of other devices in the integrated audio/video interactive device 100, the angle between the first sound box 10 and the person located in the set position area is set, in the present embodiment, the angle is equal to or less than 15 ° of the sound axis angle. Moreover, the first set height H of the first sound box 10 is higher than the first height H, the emission angle of the first sound box 10 is inclined downward, and the audio signal played by the first sound box 10 can cover a larger area range. In this case, the sound axis angle is a sound axis depression angle.

Therefore, the height difference between the first set height and the first height of the first sound box 10 corresponding to the value of the distance R from the first sound box 10 to the set position region, and the position relationship between the distance from the integrated audio/video interactive device 100 to the set position region satisfy the following relationship:

wherein β is the maximum sound axis depression angle.

In an embodiment of the application, the first height is set to be between 1-1.75 meters. The first height is in the range of 1.5-1.75 meters if the object is a height when an adult stands, such as the ear height of figure a in fig. 3, or in the range of 1.2-1.5 meters if the object is a child when the adult sits, such as the ear height of figure B in fig. 3. The set location area is preset to be within a range of 2-5 meters from the front side of the integrated audio-video interactive device 100. The first set height of the first sound box 10 is 1.7-2.2 m, and the first set height can be adjusted according to the height of the roof of the space where the sound equipment is located, so as to reduce the echo degree of the roof to the sound played by the sound equipment as much as possible.

When the first height is the minimum value, the corresponding sound axis depression angle is the maximum value. When the minimum set value of the first height is 1.2 meters, the corresponding sound axis depression angle is 15 degrees of the maximum sound axis depression angle.

The minimum distance value of 2 meters in the set position area is used as a critical value, and the sound axis depression angle is 15 degrees. According to the above formula (3), the height of the first sound box 10 is 1.74 meters, which satisfies the range of the first set height.

Further, according to the above formula (2), the value of the distance R from the corresponding first sound box 10 to the set position area is 2.07 m.

According to the above formula (1), the stereo listening angle is 10.5 ° of the ZDP axis, and the center distance of the two speaker assemblies 11 of the first speaker box 10 is 0.77 m.

After the center distance of the two groups of speaker combinations 11 is adjusted, for the set position area range of 2-5 meters away from the front side of the integrated audio/video interaction device 100, the distance between the two high-frequency speakers 12 of the two groups of speaker combinations 11 is 0.8m-1.4m, and the distance between the two middle and low-frequency speakers 13 is 0.4m-1 m. The center distance of the two sets of speaker assemblies 11 obtained above corresponds to the setting of the distance between the two tweeters 12 and the two mid-low frequency speakers 13 of the two sets of speaker assemblies 11. Therefore, according to the present embodiment, the arrangement of the two sets of speaker sets 11 of the first sound box 10 in the audio device and the setting of the emission angle can generate the superimposed sound field with a specific frequency characteristic range in a set position area away from the front side of the integrated audio/video interactive device 100.

In this embodiment, the emission angle of the speaker is an angle of the sound axis, that is, an axis angle of the sound wave propagation direction, obtained from the stereo listening angle and the sound axis depression angle.

The integrated audio/video interactive device 100 provided by the present application further includes a detection device and an angle adjustment device (not shown). In this embodiment, the detection device is disposed on the first sound box 10, and transmits a detection signal to the front area of the integrated audio/video interactive device 100 where the first sound box 10 is located, and generates a reflection signal by reflecting the shielding area, and feeds the reflection signal back to the main board module. In this embodiment, whether the occlusion region is a detection target can be confirmed by analyzing and recognizing the reflected signal. If yes, calculating to obtain the position parameters of the detection object through the mainboard module. The position parameters may include the height of the detected object and the measured distance from the integrated audio-visual interactive device 100.

In this embodiment, the detection device may be an image pickup device 30, and the image pickup device 30 located above the first sound box 10 in fig. 1 picks up an image of a front area of the integrated audio/video interactive apparatus 100, and recognizes other images on an original background of the detection image by using a reflection signal generated by the received detection image, thereby confirming whether a detection object exists. If the detected object exists, the corresponding parameters such as the height of the detected object and/or the actual measurement distance between the detected object and the integrated audio/video interactive device 100 are obtained through calculating the parameters of the depth of field and the size of the detected object.

The detection means may also be an infrared detection means (not shown). By emitting detection infrared light to the front side area of the integrated audio and video interaction device 100, the detection infrared light forms a reflection signal after being shielded by the front side area and is fed back to the main board module. The mainboard module calculates the difference between the sending time of the detected infrared light and the receiving time of the reflected signal to obtain the distance between the corresponding shielding area and the integrated audio/video interactive device 100. The detected infrared light may include multiple beams of emitted light, and the outline of the occlusion region is calculated by reflecting the signal, and whether the occlusion region is the detection object is obtained by identification. If so, calculating according to the reflection signal to obtain the height of the corresponding detection object and/or the actual measurement distance between the detection object and the integrated audio-video interaction device 100.

The detection means may also include a camera means 30 and an infrared detection means. The specific implementation process may be to recognize other images on the original background of the detection image and determine whether the detection object exists by capturing images of the front area of the integrated audio/video interactive device 100 and generating a reflection signal of the received detection image. If yes, triggering an infrared detection device to acquire the height and the actual measurement distance of the detection object in the front side area of the integrated audio/video interaction equipment 100.

On this basis, the first sound box 10 in this embodiment is further provided with an angle adjusting device connected with the speaker assembly 11. And confirming whether the detection object is in a set position area or not according to the actual measurement distance of the detection object. If yes, the main board module outputs a control signal to the angle adjusting device according to the obtained height of the shielding area, and adjusts the emission angle of the speaker assembly 11 in the first sound box 10. So that the two sets of speaker assemblies 11 can produce a superimposed sound field of a specific frequency-specific frequency characteristic range at the first height position of the set position region.

Based on the design concept of the acoustic equipment of the above embodiment, if the occlusion region is a person, the occlusion region may be preset to the shape of the person, and the person may be distinguished from other occlusion regions by recognition, so as to obtain the height of each person in the set position region, and obtain the average height of all persons. And outputting a control signal to the angle adjusting device according to the average height, so as to adjust the emission angle of the loudspeaker assembly 11.

The integrated audio and video interaction device provided by the application can further comprise a distance adjusting device. The distance adjusting device is mainly used for adjusting the center distance between two groups of loudspeaker assemblies 11 in the first sound box 10 until the overlapped area of the two groups of loudspeaker assemblies 11 is located in the range of the set position area, and generating a superposed sound field with a specific frequency characteristic range. The present embodiment can ensure that the superimposed sound field emitted from the two sets of speaker assemblies 11 can be received within the range of the set position region.

On this basis, each group of speaker assemblies 11 is within a radiation range of 120 degrees, in the first sound box 10, the radiation range of each group of speaker assemblies 11 is adjusted to the front side area of the audio/video interactive device 100 whose radiation range is integrated, and an included angle of the radiation range of the front side of the integrated audio/video interactive device 100 is within a range of 120 degrees, at this time, the center axis between the two groups of speaker assemblies 11 is overlapped with the center axis of the front side panel of the first sound box 10 in the forward direction of each group of speaker assemblies 11. Since the central axis of the overlapped region of the two sets of speaker assemblies 11 coincides with the central axis between the two sets of speaker assemblies 11, the central axis of the overlapped region of the two sets of speaker assemblies 11 is the central axis of the set position region. Therefore, the central axis of the set position area coincides with the central axis of the front panel of the first sound box 10. The purpose of the leading inverter 14 is to add the backward emitted low frequency sound wave and the forward emitted low frequency sound wave to increase the output sound pressure of the middle and low frequencies, so that the low frequency sound wave is strengthened and the low frequency sound heard in hearing is more mellow.

The frequency band range of the general receiving of the human ears to the sound is 20-20 KHZ, and the frequency band range of the human receiving to the first sound box 10 is 80-20 KHZ for the first sound box 10 due to the built-in high frequency loudspeaker 12 and the middle low frequency loudspeaker 13.

The second sound box 40 is arranged at a second set height. A woofer 41 is provided in the second enclosure 40, and the woofer 41 forms a low-frequency channel. Wherein, the second set height is smaller than the first set height. In this embodiment, the woofer 41 is located in a bottom region of the unitary audiovisual interaction device 100 and forms an elevation angle with its horizontal plane. The elevation angle is within a predetermined size range, so that the radiation area of the second enclosure 40 overlaps with the corresponding predetermined position area of the two speaker assemblies 11 in the first enclosure 10, and a superimposed sound field with a specific frequency characteristic range is generated in the predetermined position area. In this embodiment, the elevation angle of the second sound box 40 is 20 °.

In the present embodiment, the receiving frequency range of the woofer 41 is set between 20 HZ and 80HZ, so that the audio signal in the range of 20KHZ to 20KHZ can be formed in the set position area in the front side of the integrated audio/video interactive device 100.

A third sound box 50 is disposed between the first sound box 10 and the second sound box 40. A center channel speaker 51 is provided in the third enclosure 50. The center channel speaker 51 corresponds to a monaural channel of dialogue output set by the main board module, and a dialogue audio signal is acquired from the monaural channel and played from the center channel speaker 51.

The respective speakers of the first sound box 10, the second sound box 40, and the third sound box 50 are respectively provided with output channels corresponding to the main board module, and form corresponding sound channels according to the position setting of the respective speakers, and output a superimposed sound field with a specific frequency characteristic range to a set position area on the front side of the integrated audio/video interactive device 100.

However, during sound effect playback, the output audio signal is varied. The change includes whether the audio signal analyzed by the main board module includes a corresponding frequency band and a corresponding sound channel. And if so, outputting audio to the corresponding loudspeaker according to the corresponding frequency band and sound channel.

Moreover, the effective electroacoustic volumes for the first enclosure 10, the second enclosure 40, and the third enclosure 50 described above are the operating frequencies and the overall volume size of the service area corresponding thereto. For example, in the present embodiment, the length of the whole volume of the service area is 3-5m, the width is 2-3 m, and the height is 3 m, then the whole volume of the corresponding service area is 18-45 m, the effective electroacoustic volume of the first loudspeaker box 10 is 8L-16L, in the present embodiment 10L; the second sound box 40 can comprise a single 8-inch low-frequency loudspeaker 41, and the corresponding effective electroacoustic volume is between 30L and 45L; if two 8-inch woofers 41 are included, the corresponding effective electroacoustic volume is between 45L and 90L. The second enclosure 40 may include a single 10 "woofer 41 with a corresponding effective electro-acoustic volume between 35L and 55L, or 60L and 120L if two 10" woofers 41 are included. A combination of different woofers 41 may be used, depending on the change of service area.

The integrated audio-video interactive device 100 provided in the present application further includes a shock absorbing structure. The damping structure is used for fixing the first sound box 10 and the second sound box 40, even including the third sound box 50, on the support frame 20 of the integrated audio/video interactive device 100, and in this embodiment, the damping structure fixes the sound boxes on the two side support columns 21 of the support frame 20.

Referring to fig. 4, fig. 4 is a schematic cross-sectional view illustrating a first shock-absorbing structure according to an embodiment of the present disclosure.

The first shock absorbing structure 60 comprises a first soft shock absorbing ring sleeve 61, a first bolt 62 and a first nut 63; the first soft damping snare 61 is fixed on the fixing hole of the support column 21, and the first bolt 62 sequentially penetrates through the first soft damping snare 61 and the outer wall of the sound box respectively to fix the sound box at a set position. And the sound box is fastened at the tail end of the first bolt 62 through a first nut, so that the sound box is fixed on the supporting column 21.

On the basis of the sound equipment provided above, the present application further provides an integrated audio/video interactive device 100. As shown in fig. 1, the integrated audio/video interactive device 100 may include the sound device provided in any of the above embodiments, and a display screen 70 located right below the first sound box 10, where central axes of the display screen 70 and the first sound box 10 perpendicular to the ground are respectively overlapped. The speaker assemblies 11 at the two ends of the first sound box 10 are symmetrically arranged about the central axis. In this embodiment, the display screen 70 is fixed on the supporting column 21 of the supporting frame 20, and forms an integrated audio/video interactive device 100 with the first sound box 10 and/or the second sound box 40 and the third sound box 50.

In this embodiment, a communication access module 71 is further disposed below the display screen 70, and an access code 72, such as a two-dimensional code, is disposed on the communication access module 71, and is used to provide a communication path for a terminal to connect the integrated audio/video interaction device 100, for example, the terminal scans the access code 72, and can push a public number, an applet, or an application program corresponding to the integrated audio/video interaction device 100 to the terminal that scans the code, so as to log in a database corresponding to the integrated audio/video interaction device 100. And if the terminal has preset a corresponding link path, directly logging in a control system of the integrated audio and video interactive device 100 according to the account information of the terminal.

The integrated audio/video interaction device 100 further comprises a surround sound box (not shown) separated from the integrated audio/video interaction device 100, wherein a surround sound loudspeaker is arranged in the surround sound box, and the surround sound loudspeaker corresponds to a rear middle sound field sound channel arranged on the main board module, so that a set of audio/video system with full audio frequency segments is formed, and the use requirements of various audios/videos can be met.

Referring to fig. 5, fig. 5 is a schematic cross-sectional structure diagram of a microphone placing structure in an embodiment provided in the present application.

A voice input module 80 is also included on the unitary audio-visual interactive device 100. In this embodiment, the voice input module 80 includes a microphone 81 and a microphone placement structure 82. The microphone placement structure 82 includes a hanger body 84. In the present embodiment, the hanger main body 84 is a semi-enclosed cylindrical shape for the microphone 81 to be inserted therein.

A fixing portion 86 is provided on the outer side of the hanger main body 84, and the fixing portion 86 is provided to protrude from the outer wall of the hanger main body 84. The fixing portion 86 fixes the hanger main body 84 at a set position of the support column 21 by a second bolt 87, and the second bolt 87 is inserted through the support column 21 and the fixing portion 86 in this order. A gourd hole 22 is formed at a position where the second bolt 87 is inserted into the support column 21, so that the second bolt 87 can more easily pass through the support column 21.

Further, the microphone placing structure 82 further includes a second shock absorbing structure 83, and the second shock absorbing structure 83 is disposed between the fixing portion 86 and the supporting pillar 21.

The second shock-absorbing structure 83 includes: an upper soft damping sleeve 85a sleeved on the upper edge of the hanging frame body 84, a lower soft damping sleeve 85b sleeved on the lower edge, and a latch pin assembly 88. In this embodiment, the fixing portion 86 is a convex structure, and the protrusions at two sides thereof are respectively nested in the upper soft damping sleeve 85a and the lower soft damping sleeve 85 b. The latch assembly 88 includes a latch 88a, a latch handle 88b, and a latch spring 88 c. The pin 88a passes through the supporting column 21 and the fixing portion 86 in sequence through the insertion hole 23 on the supporting column 21, and is installed at one end close to the lower soft damping sleeve 85 b. In this embodiment, the fixing portion 86 is recessed at the position where the pin 88a is mounted. The plug pin 88a is inserted into the middle section of the fixing portion 86 and exposed, and the plug pin handle 88b is sleeved on the exposed middle section and used for screwing the plug pin 88a, so that the tail end of the plug pin 88a is abutted against the groove of the fixing portion 86. One end of the pin 88a abutting against the groove of the fixing portion 86 is concave, a pin spring 88c is disposed between the concave and the groove of the fixing portion 86, and the pin spring 88c abuts against between the fixing portion 86 and the pin 88a for counteracting the acting force of the hanger main body 84 on the supporting post 21.

When the microphone 81 is drawn out of or placed back into the hanger main body 84, the upper soft damping sleeve 85a and the lower soft damping sleeve 85b are arranged to buffer the space between the microphone 81 and the hanger main body 84, so as to reduce the acting force of the microphone 81 on the hanger main body 84 in the process of relative movement between the microphone 81 and the hanger main body 84. Further, the acting force of the microphone 81 on the hanger main body 84 is offset by the pin spring 88c located at the end of the pin 88a, so that the acting force of the fixing portion 86 on the supporting column 21 is reduced, and the acting force of the microphone 81 on the hanger main body 84 during the relative movement of the microphone 81 and the hanger main body 84 can be further reduced.

The microphone placing structure 82 can adjust the length of the hanger main body 84 and the shape of the inner wall thereof according to the design requirements, so as to correspond to the outer contours of different parts of the microphone 81, such as the outer contour of the neck part of the microphone, and form the neck-hung microphone placing structure 82; if the outer contour of the tail position of the microphone is corresponded, the tail inserted microphone placing structure 82 is formed.

The technical scheme of this application mainly is the circuit design of audio frequency and video all-in-one equipment, through providing the circuit that an integrated level is high, can make the wiring simpler simultaneously to promote audio signal quality. In the circuit of the application, a high-voltage power supply board is connected to a power line (generally, 220V AC) circuit through a power plug.

Referring to fig. 6, fig. 6 is a schematic structural diagram of an audio and video all-in-one device circuit provided in an embodiment of the present application.

The power supply system comprises a high-voltage power supply board; the high voltage power supply board includes: an interference suppression circuit connected to the power line, and a splitter divided into a plurality of parts.

In one embodiment, a source end data interface of a circuit of the integrated audio and video interactive device comprises a plurality of groups of lead interfaces; the multi-core cable at least comprises a group of power lines, a group of audio signal lines and a group of communication lines.

As for the operating state information, normal state, short circuit protection, overload protection, overvoltage protection, and the like can be mentioned; specifically, the working state related information generated by the power amplifier board in the operation process can be transmitted to the mainboard module through the RS485 bus, the mainboard module can process the information and then display the information, or the information is transmitted to the background server through the network, and then the information is sent to the terminal equipment of the user to be checked and monitored, so that the monitoring intelligent degree is improved.

As the control information, a power management instruction, a volume adjustment instruction, a device parameter setting instruction, and the like may be mentioned; specifically, the main board module may issue an instruction to turn off the power supply of the power amplifier board through the I2C bus when the power amplifier board does not work, so as to save energy consumption, and may issue a volume adjustment instruction through the I2C bus, and the like, so as to implement a remote control function.

The isolation circuit may include a photocoupler connected to the power input interface; the first digital isolation chip is connected with the audio input interface; the second digital isolation chip is connected with the RS485 bus communication input interface; and a third digital isolation chip connected with a communication input interface of the I2C bus; each interface is provided with an isolation function through an isolation circuit, so that direct interference transmission between a main board module and a power amplifier board is reduced, and the quality of audio signals is improved; through first digital isolation chip, second digital isolation chip and third digital isolation chip, can carry out effective isolation protection to each group of interface transmission digital signal, promote digital signal transmission quality.

In this embodiment, the power line may be isolated by the photocoupler, which effectively inhibits the interference signal of the power amplifier board from affecting the audio signal of the main board module; particularly, in the power amplifier board, an impact signal is generated when the audio equipment is turned on or turned off, and power-on delay protection and power-off mute protection can be designed for avoiding the influence of the impact signal; the power supply signal output by the main board module can be used as a control signal to be checked by the power amplification board, and whether the photoelectric coupler is conducted or not is used for determining whether power is on or off; thereby, the power amplification plate can be better protected.

In one embodiment, the motherboard module comprises a core board, and a digital signal processing board and an analog signal processing board which are connected with the core board; the core board is arranged in a cavity to shield external interference.

According to the technical scheme of the embodiment, a source end data interface is provided with a plurality of groups of lead interfaces, and a multi-core cable at least comprises a group of power lines, a group of audio signal lines and a group of communication lines; wiring complexity can be reduced on the basis of power control, audio transmission and mutual communication functions; through shielding treatment, direct interference of different circuit boards can be avoided, and the quality of audio signals is improved.

Further, the high voltage power supply board may further include: the standby power supply circuit, the control circuit and the power switch are connected with a power line; the standby power supply circuit is connected with a power switch through a control circuit, and the power switch is connected between a power line and the interference suppression circuit.

The standby power supply circuit outputs power to the control circuit, and the control circuit outputs a control signal to the power switch; the power switch comprises one or more of a manual control switch, an automatic timing switch and a remote network control switch (remotely controlled by an IOT remote control module connected with the control circuit).

According to the technical scheme, the interference suppression circuit is designed on the high-voltage power supply board, the sensitive frequency of the power amplification board is matched, power supply interference can be filtered, remote control can be performed through the power switch, and the application effect is improved.

In one embodiment, as shown in fig. 6, the power amplifier boards are respectively provided with power amplifier control circuits for power up and power down control; the switch power supply circuit of the power amplification board is also connected with a power amplification power supply switch; the power amplifier control circuit is connected with the power amplifier power switch.

Further embodiments of the audio-video appliance circuit are set forth below.

Referring to fig. 7, fig. 7 is a schematic structural diagram of an audio-video integrated machine device circuit according to another embodiment of the present application. The circuit mainly comprises: the high-voltage power supply board, the mainboard module and the at least one power amplifier board; the main board module is provided with an audio signal input interface, a video signal output interface and at least one source end data interface.

The audio input interface is connected with a microphone or an external sound source, the video signal output interface is connected with the display screen, and the source end data interface is connected with the power amplifier board through a multi-core cable; the high-voltage power supply board is connected with the main board module, the power amplifier board and the display screen, and outputs power to the main board module, the power amplifier board and the display screen, and the power amplifier board is connected with the loudspeaker of at least one sound box.

The main board module integrates the functions of a television and a song requesting machine, and is used for outputting video signals to the display screen, driving the display screen to display and outputting control signals and audio signals to the power amplifier board; the power amplifier board is used for executing the operation corresponding to the control signal and amplifying the audio signal, and driving the loudspeaker of the sound box to play the audio signal.

As an example, as in fig. 7, the power amplification board may include: a full-frequency power amplification board and a bass power amplification board; wherein, full frequency power amplifier board is located on full frequency audio amplifier, and the bass power amplifier board is located on the low frequency audio amplifier.

According to the technical scheme of the embodiment, the high-voltage power supply board, the mainboard module and the at least one power amplification board are independent, wherein the lead interface comprises a power supply interface, an audio interface and a communication interface. The main board module is provided with an audio signal input interface, a video signal output interface and at least one source end data interface, and the source end data interface is connected with the power amplifier board through a multi-core cable; in the technical scheme, the hardware integration level of each board card and each circuit is high, the circuit wiring is simple, the interference of the ground loop effect inside the cable on the audio signal is reduced, a better audio playing effect is achieved, and the method and the device can adapt to the field deployment of multi-scene application.

Referring to fig. 8, fig. 8 is a schematic connection diagram of a multi-core cable according to an embodiment of the present disclosure, in which a source data interface is disposed on a motherboard module, and a tail data interface and an isolation circuit are disposed on a power amplifier board. The multi-core cable can adopt a USB3.0 cable, 4 groups of interfaces are designed, the interfaces respectively correspond to a power line (leads 1 and 2), an RS485 bus (leads 3 and 4), an SPDIF audio line (leads 5 and 6) and an I2C bus (leads 7 and 8), and a lead 9 is a ground wire of a communication line. The interfaces on the host system and the power amplifier system are designed into USB interfaces, so that the wiring difficulty and the connection difficulty can be simplified in practical application, the connection of multiple groups of functional interfaces can be realized through common USB lines, the wiring complexity is reduced, the ground loop effect inside the cable is also reduced, the interference to audio signals is reduced, and the audio playing effect is improved.

The main board module converts the I2S audio signal into an SPDIF audio signal, and transmits the SPDIF audio signal to the audio input interface through the audio output interface; the power amplifier board is used for converting the SPDIF audio signal received by the audio input interface into an I2S audio signal and performing DAC (digital-to-analog conversion) conversion processing. The main board module is through converting I2S audio signal into SPDIF audio signal and transmitting the power amplifier board to the power amplifier board of power amplifier board, and the power amplifier board converts SPDIF audio signal into I2S audio signal earlier, then handles through DAC and exports the speaker and play, can improve audio signal transmission distance and interference killing feature from this.

The power amplifier board can feed back the working state information to the mainboard module through a communication output interface-communication input interface of the RS485 bus; and the mainboard module performs state display and/or state management on the working state information. The mainboard module can send control information to the power amplifier board through a communication output interface-communication input interface of the I2C bus; the power amplifier board receives the control information and executes corresponding operation.

It should be noted that, in addition to the RS485 bus and the I2C bus, other buses or communication lines may also be used to implement corresponding functions, such as IIC, SPI, and the like, which are not limited herein.

For the power amplifier control circuit, referring to fig. 9, fig. 9 is a schematic structural diagram of the power amplifier control circuit provided in an embodiment of the present application, and the power amplifier control circuit may include a delay circuit, a detection comparison circuit, a discharge circuit, and an execution circuit; the detection and comparison circuit is connected with the power supply and the discharge circuit, and the discharge circuit is connected with the delay circuit.

When the power is on, the delay circuit is started in a delay mode in a charging mode, and after the charging is finished, the execution circuit is triggered to output a control signal to start the power amplifier, so that the power amplifier is subjected to power-on protection; when the power failure occurs, the detection comparison circuit quickly detects the voltage reduction of the power supply, the discharge circuit is started to discharge the delay circuit, the delay circuit triggers the execution circuit to output a protection signal to close the power amplifier after the discharge is completed, and the power amplifier is subjected to power failure protection.

According to the technical scheme, the power amplifier control circuit for controlling the power amplifier board electrically in the power amplifier board is arranged, the power amplifier board can be subjected to mute processing and turn-off processing, the influence of impact signals generated when the power amplifier board is turned on and turned off on the power amplifier board and the loudspeaker is avoided, and the safety of the power amplifier board and the loudspeaker is protected.

Referring to fig. 10, fig. 10 is a circuit diagram of a power amplifier control circuit provided in the present application, in which a detection comparison circuit includes: a triode Q2, an energy storage capacitor C6, a diode D3 and a diode D4; the diode D4 is connected between the power supply and the emitter of the triode Q2, and the energy storage capacitor C6 is connected with the emitter of the triode Q2; the diode D3 is connected to the base of the triode Q2 through the resistor R5, the base of the triode Q2 is grounded through the resistor R5 and the resistor R2, and the collector of the triode Q2 outputs a detection signal. The isolation circuit comprises a photoelectric coupler, one output end 4 of the photoelectric coupler is connected with a diode D3, and the other output end 3 of the photoelectric coupler is connected with the base electrode of a triode Q2 through a resistor R5. The delay circuit comprises a resistor R3 and an energy storage capacitor C1; the discharge circuit comprises a resistor R7 and a triode Q3; the executive circuit comprises a resistor R6, a resistor R9 and a transistor Q1.

In the specific work:

when the POWER is ON, the triode Q1 is connected to the STANDBY POWER through the pull-up resistor R6, the triode Q1 is in a cut-off state when the POWER is ON, and the output end POWER ON outputs a high-level signal to the POWER amplifier, so that the POWER amplifier and the loudspeaker are closed; meanwhile, the STANDBY POWER supplies slowly charge the energy storage capacitor C1 through the diode D3, the photoelectric coupler U1 and the resistor R3, slowly charge the energy storage capacitor C3 through the resistor R4, and supply voltage to the base electrode of the triode Q1 through the resistor R9 after the energy storage capacitors C1 and C3 are fully charged; when the voltage reaches a certain value, the triode Q1 is conducted, and at the moment, the output end POWER ON outputs a low-level signal to the POWER amplifier to start the POWER amplifier and the loudspeaker; therefore, the function of starting the power amplifier and the loudspeaker in a delayed manner is realized, and the power amplifier and the loudspeaker can be protected when the power amplifier and the loudspeaker are powered on.

When POWER is off (such as shutdown operation, accidental POWER failure and the like), the energy storage capacitor C6 provides voltage for the emitter of the triode Q2, the base voltage of the triode Q2 is reduced, when the base and the collector of the triode Q2 generate voltage difference, the triode Q2 is conducted, the collector of the triode Q2 outputs a high-level signal to the base of the triode Q3, the triode Q3 is conducted, the emitter of the triode Q3 is grounded, the energy storage capacitors C1 and C3 are rapidly discharged through the triode Q3, after discharging, the voltage of the base of the triode Q1 is rapidly reduced, at the moment, the triode Q1 rapidly enters a cut-off state, correspondingly, the output end POWER ON outputs a high-level signal to a POWER amplifier, and the POWER amplifier and the loudspeaker are rapidly turned off; therefore, the situation that power failure voltage of the power supply can be slowly reduced to cause untimely detection is avoided, complete power failure of the power amplifier and the loudspeaker is guaranteed before impact signals reach the power amplifier and the loudspeaker, and the effect of protecting the power amplifier and the loudspeaker is achieved.

In one embodiment, as shown in fig. 2, the motherboard module is further connected to a network communication module, and the network communication module is connected to the backend server through a network. The network communication module is used for receiving input information forwarded by the background server and uploading output information to the background server; wherein the input information includes at least one of control information, data information, audio information, and video information; the output information includes at least one of device state information, data information, audio information, and video information.

The mainboard module supports connection of various devices through the network communication module; for example, the interactive tablet realizes control, picture expansion and function interaction through WIFI hotspot wireless connection of a host system; for example, the mobile terminal scans the two-dimensional code on the screen of the device through the APP, and mobile terminal control, function interaction and the like of the public number, the applet and the APP are achieved.

In one embodiment, as shown in fig. 2, the main board module is further connected with a live camera, an AI camera, a sound pickup, a code scanner, and the like; the live broadcasting camera is used for shooting video stream in a set space range and transmitting the video stream to the mainboard module; the sound pick-up is used for directionally speaking users by utilizing an AI algorithm and picking up the speaking contents of the users to obtain an audio stream which is transmitted to the main board module; the main board module is used for synthesizing the video stream and the audio stream into an audio/video file and sending the audio/video file to a background server through a network; and the background server is used for transmitting the audio and video file to other audio and video integrated machines so as to carry out real-time audio and video interaction and live broadcast between the audio and video integrated machine and other audio and video integrated machines.

The AI camera is used for shooting user image pictures in a set space range; the AI processing module converts the user image picture into user information and/or limb movement information through an AI algorithm; the main board module is used for identifying and positioning the face of a user according to the user information and controlling the shooting angle and the focal length of the live broadcast camera; or the user can play a somatosensory interactive game according to the limb movement information.

Specifically, the live broadcast camera is mainly used for shooting images, and the AI camera is more used for positioning, distance measurement and angle measurement; for example, a user dances in a live broadcast mode in front of a screen, a specific distance, a specific position and a specific angle can be recognized through an AI camera, and then the live broadcast camera is controlled to rotate a corresponding angle and a corresponding focal length to shoot the user for live broadcast; the matrix sound pick-up also has an AI operation function, and can identify the sound direction and locate the user.

According to the technical scheme, the internet of things function is realized through the live broadcasting camera, the AI camera, the sound pickup, the code scanner, the network communication module and the like, a user can utilize the audio and video all-in-one machine equipment to carry out live broadcasting interaction, remote control is carried out on the audio and video all-in-one machine equipment, interaction and the like are carried out with other audio and video all-in-one machine equipment, and the user use experience is improved.

In one embodiment, as shown in fig. 6, the motherboard module is further provided with a peripheral device interface for connecting a peripheral device and/or providing power; the main board module is used for receiving at least one of equipment control signals, song requesting information, audio signals or video signals input by peripheral equipment; and executing or processing the device control signal, the song requesting information, the audio signal or the video signal.

The mainboard module supports the connection of various external display devices through peripheral device interfaces: for example, the touch display screen is connected with the main board module through a TYPE-C single cable or a video signal and a power supply two cables, so that the touch control and the picture expansion functions are realized.

According to the technical scheme, the peripheral equipment is connected through the peripheral equipment interface, so that relevant information can be conveniently input through the peripheral equipment, the audio and video all-in-one machine equipment can be controlled, and the use convenience of the audio and video all-in-one machine equipment is improved.

In one embodiment, the unitary audio-visual interactive device further comprises a touch screen. The touch screen is connected with the main board module. The touch screen is used for receiving touch operation of a user, generating a touch instruction, sending the touch instruction to the mainboard module, and outputting a control instruction to other parts of the integrated audio and video interaction equipment through the mainboard module. In this embodiment, the touch screen is connected to the motherboard module by using, for example, a USB data cable. When a user performs touch operation through the touch screen or utilizes an electronic whiteboard technology for demonstration, a corresponding touch instruction or demonstration data is generated and sent to the mainboard module through the data line. Through the electric connection, the mainboard module sends corresponding control instructions to other parts of the integrated audio and video interaction equipment.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the disclosure herein is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the disclosure. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. An integrated audio-video interactive device, comprising: the supporting frame is arranged on the base;

2. The integrated audio-visual interaction device of claim 1, wherein the base is of a mobile design;

3. The unitary audio-visual interactive device of claim 2,

a plurality of loudspeakers with different working frequencies are arranged in the first sound box;

4. The unitary audio-visual interactive device of claim 3,

the first sound box comprises two groups of loudspeaker combinations; wherein each loudspeaker combination comprises at least one high frequency loudspeaker and one medium and low frequency loudspeaker;

5. The integrated audio-video interactive device according to claim 4, wherein the first sound box is installed at a first set height of a support frame of the integrated audio-video interactive device;

6. The integrated audio-video interactive device of claim 5, wherein the center distance value satisfies the following relationship:

L＝2*R*tanα

7. The integrated audio-video interactive device according to claim 6, wherein a value of a distance R from the first speaker to the set position region satisfies a relationship:

and is

8. The unitary audio-visual interactive device of claim 7 further comprising:

a low-frequency loudspeaker is arranged in the second sound box, and forms a low-frequency sound channel; the second sound box is arranged at a second set height;

wherein the second set height is less than the first set height;

9. The integrated audio-video interactive device of claim 1, wherein the power system comprises a high voltage power board; the high voltage power supply board includes: an interference suppression circuit connected to the power line, and a splitter divided into a plurality of parts;

10. The integrated audio-video interactive device of claim 9, wherein the high voltage power board further comprises: the standby power supply circuit, the control circuit and the power switch are connected with a power line;

11. The integrated audio-video interactive device according to claim 9, wherein the main board module is provided with an audio signal input interface, a video signal output interface and at least one source data interface;

the audio signal input interface is connected with a microphone or an external sound source, the video signal output interface is connected with a display screen, and the source end data interface is connected with a tail end data interface of the power amplification board through a multi-core cable;

12. The unitary audio-visual interactive device of claim 9 wherein the sound system comprises a power amplifier board; the power amplifier board is provided with a power amplifier control circuit for controlling power up and down;

13. The integrated audio-video interactive device according to claim 9, wherein the main board module is further connected to a live broadcast camera, an AI camera and a sound pickup;

the AI camera is used for shooting user image pictures in a set space range;

14. The unitary audio-visual interactive device of claim 9 further comprising: the touch screen is connected with the mainboard module;