CN218679298U

CN218679298U - Terminal control integrated active wall-mounted loudspeaker box system

Info

Publication number: CN218679298U
Application number: CN202223107013.8U
Authority: CN
Inventors: 刘寒冬; 田春峰; 邹卫中; 周鑫妙; 周武敏
Original assignee: Zhejiang Haoyuan Electronic Technology Co ltd
Current assignee: Zhejiang Haoyuan Electronic Technology Co ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-03-21
Anticipated expiration: 2032-11-23

Abstract

The utility model relates to an active hanging audio amplifier system of terminal control integration, including control panel and hanging audio amplifier, control panel include first microcontroller and the first encoder, first display screen, first pilot lamp and the first net gape of being connected with first microcontroller respectively, the hanging audio amplifier include power amplifier, second microcontroller and the audio frequency processing chip, second encoder, second display screen, second pilot lamp and the second net gape of being connected with second microcontroller respectively, first net gape and second net gape pass through the net twine and connect, the audio frequency processing chip be connected with the sound source, power amplifier be connected with second microcontroller and audio frequency processing chip respectively, compare with prior art, the utility model has the advantages of with low costs, good performance.

Description

Terminal control integrated active wall-mounted loudspeaker box system

Technical Field

The utility model belongs to the technical field of the active audio amplifier and specifically relates to an active hanging audio amplifier system of terminal control integration is related to.

Background

The active wall-mounted sound box is widely applied to the field of multimedia and is suitable for places such as school multimedia classrooms, large screen projects, meeting rooms, studios, banks, hotels and the like. The active wall-mounted sound box is divided into a wired sound box and a wireless sound box, and at present, the active wall-mounted sound box is mainly applied to the wired sound box, and is low in cost and convenient to use. Although signal wiring has been removed from to wireless active hanging audio amplifier, nevertheless there is certain limitation, if: the transmitting device must have a wireless transmitting function, control not to generate a serial frequency, relatively high cost, and the like.

In the prior art, the most commonly used wired wall-mounted sound box has the following defects:

1. when a plurality of sound sources exist, the function of selecting one from more to play cannot be supported, the possibility of crosstalk exists when the plurality of sound sources are input simultaneously, for example, in a multimedia classroom, the sound sources comprise a sound card sound source of a platform computer, a sound source of slide equipment, a sound source of a projector and the like, and in the system, all sound source equipment are inserted into an active sound box, so that the volume of the required sound source can be opened only in the using process, the volume of the sound source which is not used is closed, and otherwise, the two sound sources can be subjected to crosstalk;

2. the total volume and the high and low tone cannot be flexibly adjusted, once the wall-mounted sound box is installed, secondary adjustment of the total volume and the high and low tone needs to be completed by professional persons, for example, in a multimedia classroom, after the volume of sound source equipment reaches the limit, if the volume needs to be adjusted again, the total volume of the active sound box needs to be adjusted, or if the sound is not heard well in the playing process, the high and low tone needs to be adjusted, and at this time, a teacher or a student cannot complete the adjustment and needs to be matched by the professional persons;

3. after the device is installed, the current state cannot be known, including how many sound sources are inserted, where the current total volume is, where the tone is adjusted, and the like, because the adjusting end is close to the wall;

4. the sound source is connected with the sound source equipment through audio lines such as RCA, the noise introduced by different lengths of connecting lines is different, so that the requirement on the use distance is met, and the length of the audio lines such as RCA is limited to several meters to dozens of meters. The wiring is very inconvenient.

At present, a wired wall-mounted active sound box called as an IP broadcast is a sound box transmitted based on a network, and is based on a TCP/IP protocol, but the price of the IP sound box is more than 5 times that of a common active sound box, so that the cost of the IP sound box is greatly increased in a small multimedia place.

To sum up, no matter the traditional type or the network type wired active wall-mounted speaker has certain limitations, how on the basis of the traditional type, under the condition of ensuring that the cost is not obviously increased, the problem of overcoming the defects of the traditional type active wall-mounted speaker is urgently needed to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an active hanging audio amplifier system of terminal control integration in order to overcome the defect that above-mentioned prior art exists.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides an active hanging audio amplifier system of terminal control integration, includes control panel and hanging audio amplifier, control panel include first microcontroller and respectively with first microcontroller be connected first encoder, first display screen, first pilot lamp and first net gape, the hanging audio amplifier include power amplifier, second microcontroller and respectively with audio processing chip, second encoder, second display screen, second pilot lamp and the second net gape of second microcontroller being connected, first net gape and second net gape pass through the net twine and connect, audio processing chip be connected with the sound source, power amplifier be connected with second microcontroller and audio processing chip respectively.

Further, the audio processing chip adopts a TM2314 chip.

Furthermore, the sound sources include a first sound source, a second sound source, a third sound source and a fourth sound source, and the first sound source, the second sound source, the third sound source and the fourth sound source are respectively connected to the pin 11 and the pin 16, the pin 10 and the pin 15, the pin 9 and the pin 14, and the pin 8 and the pin 13 of the audio processing chip.

Furthermore, the first indicator light and the second indicator light are respectively provided with four indicator lights, and respectively correspond to the first sound source, the second sound source, the third sound source and the fourth sound source, and are used for indicating the current use condition of the sound sources.

Further preferably, the first display screen and the second display screen are both LED digital display screens.

Further preferably, the first network port and the second network port adopt RJ45 interfaces, and the network cable adopts a twisted pair.

Further preferably, the first encoder and the second encoder adopt EC11 encoders.

Furthermore, the audio processing chip and the second microcontroller realize bidirectional transmission through serial port control.

Further, when the system is applied to a multimedia classroom or a multimedia conference room scene, the control panel is installed on the platform, and the wall-mounted loudspeaker box is installed on the wall.

Compared with the prior art, the utility model has the advantages of it is following:

1) The utility model adopts TM2314 chip of Shenzhen city sky microelectronics technologies Limited company as audio processing chip, which is a dual-track digital audio processing chip with audio source selection 4 to select 1, the price is low, the chip is easy to obtain, the cost is only increased by 20% compared with the cost of the traditional wall hanging active sound box, but the defect of the traditional wall hanging active sound box is greatly improved;

2) The wall-mounted loudspeaker box is provided with the EC11 encoder, so that the selection of different sound sources and the adjustment of the total volume and the high and low timbres can be realized through the encoder; meanwhile, the utility model adds the indicating lamp and the LED digital display screen on the control panel and the wall-mounted loudspeaker box, so that the state of the current sound source selection can be visually seen; in addition, the EC11 encoder is also arranged on the control panel of the utility model, the sound source selection, the total volume, the high-low tone and the like of the wall-mounted sound box can be remotely adjusted, and the selection of the sound sources at two positions, the adjustment of the total volume and the high-low tone and the display of the indicating lamp and the LED digital display screen are synchronous;

3) The utility model discloses a control panel and hanging audio amplifier adopt RJ 45's standard net twine interface respectively to adopt the standard net twine to connect, realize the communication between control panel and the hanging audio amplifier and audio signal's hybrid transmission, need not remove special pre-buried line again, brought the facility for the installation, because at present regardless of family's fitment or public building's fitment, pre-buried net twine is very common, so based on communication and signal transmission of net twine, can let the installation more convenient, free, and can better realization extension;

4) The utility model discloses on the basis of RJ45 net twine, signal transmission has been increased in step, turn into differential signal then a set of paired line through RJ 45's standard net twine to analog signal, transmit this differential signal, then restore received differential signal into analog signal again, if unnecessary noise has been introduced like this in the transmission course, principle through the difference, just in time can offset the noise, the transmission of audio signal high-fidelity has been realized, the limitation that analog signal can only transmit several meters or tens of meters has been solved, this technical scheme, can realize communication control and audio signal transmission more than 100 meters.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic circuit connection diagram of the control panel of the present invention, wherein fig. 2a is a schematic circuit connection diagram of the first microcontroller portion, and fig. 2b is a schematic circuit connection diagram of the first encoder portion; FIG. 2c is a schematic circuit diagram of a first indicator light portion, and FIG. 2d is a schematic signal-to-differential circuit diagram;

fig. 3 is a schematic diagram of a circuit connection of the wall-mounted speaker, wherein fig. 3a is a schematic diagram of a circuit connection of the audio processing chip, fig. 3b is a schematic diagram of a circuit connection of the power amplifier, fig. 3c is a schematic diagram of a circuit connection of the second indicator light, fig. 3d is a schematic diagram of a circuit connection of the second microcontroller, fig. 3e is a schematic diagram of a circuit connection of the first sound source, the second sound source and the third sound source, and fig. 3f is a schematic diagram of a circuit connection of the fourth sound source.

Wherein: 11. the system comprises a first microcontroller, 12, a second microcontroller, 21, a first display screen, 22, a second display screen, 31, a first indicator light, 32, a second indicator light, 41, a first encoder, 42, a second encoder, 51, a first network port, 52, a second network port, 61, a first sound source, 62, a second sound source, 63, a third sound source, 64, a fourth sound source, 7, an audio processing chip, 8, a power amplifier, 9, a network cable, 101, a main box, 102 and a sub-box.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example (b):

as shown in fig. 1-3, the utility model provides an active hanging audio amplifier system of terminal control integration, when this system was applied to multimedia classroom or multimedia conference room scene, control panel installed on the podium, and the hanging audio amplifier is installed on the wall. The system comprises a control panel and a wall-mounted sound box, wherein the control panel comprises a first microcontroller 11 and a first encoder 41 connected with the first microcontroller 11, a first display screen 21, a first indicator lamp 31 and a first net port 51, the wall-mounted sound box comprises a power amplifier 8, a second microcontroller 12 and an audio processing chip 7 connected with the second microcontroller 12, a second encoder 42, a second display screen 22, a second indicator lamp 32 and a second net port 52, the first net port 51 and the second net port 52 are connected through a net wire 9, the audio processing chip 7 is connected with a sound source, and the power amplifier 8 is connected with the second microcontroller 12 and the audio processing chip 7 respectively.

The audio processing chip 7 and the second microcontroller 12 realize bidirectional transmission through serial port control, as shown in fig. 3a, a TM2314 chip is adopted, the chip is a domestic chip with a dual-channel digital audio processing core with a sound source selection of 4-to-1, which is a product of the shenzhen city tianmicroelectronics technologies, ltd, and is low in price and easy to obtain, the chip is below a low level 1V and above a high level 3V, so that communication can be realized by directly pulling up 3.3V, as shown in fig. 3e and fig. 3f, the sound source includes a first sound source 61, a second sound source 62, a third sound source 63 and a fourth sound source 64, the first sound source 61, the second sound source 62, the third sound source 63 and the fourth sound source 64 are respectively connected to the pin 11 and the pin 16, the pin 10 and the pin 15, the pin 9 and the pin 14, and the pin 8 and the pin 13 of the audio processing chip 7, and a circuit of the fourth sound source is transmitted through differential signals. The first encoder 41 and the second encoder 42 are EC11 encoders, as shown in fig. 2 (b), by which selection of different sound sources and adjustment of total volume and high and low timbre can be realized, and selection of sound sources, total volume and high and low timbre of the control panel and wall-mounted speaker can be realized.

As shown in fig. 3 (b), in the power amplifier part, the AMP _ SD pin turns on the high-level power amplifier and turns off the low-level power amplifier; when the power is on, the AMP _ SD pin is pulled down, the AMP _ SD pin is pulled up after 3 seconds, the power amplifier is turned on, and the 'POP' sound at the moment of turning on is prevented; when the total volume is adjusted and the volume is adjusted to 0, the AMP _ SD pin is simultaneously pulled down, and the power amplifier is in mute state.

As shown in fig. 2c and fig. 3c, four first indicator lights 31 and four second indicator lights 32 are respectively provided, and respectively correspond to the first sound source 61, the second sound source 62, the third sound source 63 and the fourth sound source 64, and are used for indicating the current use condition of the sound source, so that the current selection state of the sound source can be visually seen, and the display of the indicator lights at two positions of the control panel and the wall-mounted sound box and the LED digital display screen are changed synchronously. In this embodiment, the first display screen 21 and the second display screen 22 are both LED digital display screens.

In this embodiment, the RJ45 interfaces are used for the first network interface 51 and the second network interface 52, the twisted pair is used for the network cable 9, the network cable meets the standard, and the embedded network cable is very common now regardless of home decoration or public building decoration, so based on the communication and signal transmission of the network cable, the installation can be more convenient and free, and the implementation extension can be better. For example, the active wall-mounted loudspeaker box is arranged in a classroom, the remote control panel can be arranged on a platform through a network cable, and even the remote control panel can be arranged in a school machine room, so that the active wall-mounted loudspeaker box can be easily controlled by adjusting the remote control panel.

In addition, on the basis of the RJ45 network cable, the embodiment synchronously adds signal transmission, converts an analog signal into a differential signal and transmits the differential signal through a group of twisted-pair lines of the RJ45 standard network cable, as shown in fig. 2d and fig. 3f, the differential signal is converted into a differential signal circuit, a fourth sound source transmits the differential signal through the twisted-pair lines, and then the received differential signal is restored into the analog signal, so that if unnecessary noise is introduced in the transmission process, the noise can be exactly offset through the differential principle, the high-fidelity transmission of the audio signal is realized, the limitation that the analog signal can only be transmitted by several meters or dozens of meters is solved, and the technical scheme can realize the communication control and the audio signal transmission of more than 100 meters.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an active hanging audio amplifier system of terminal control integration, a serial communication port, including control panel and hanging audio amplifier, control panel include first microcontroller (11) and respectively with first encoder (41), first display screen (21), first pilot lamp (31) and first net gape (51) that first microcontroller (11) are connected, the hanging audio amplifier include power amplifier (8), second microcontroller (12) and respectively with audio frequency processing chip (7), second encoder (42), second display screen (22), second pilot lamp (32) and second net gape (52) that second microcontroller (12) are connected, first net gape (51) and second net gape (52) connect through net twine (9), audio frequency processing chip (7) be connected with the sound source, power amplifier (8) be connected with second microcontroller (12) and audio frequency processing chip (7) respectively.

2. The terminal control integrated active wall-mounted sound box system according to claim 1, wherein the audio processing chip (7) is a TM2314 chip.

3. A terminal control integrated active wall hanging sound box system according to claim 2, characterized in that said sound source comprises a first sound source (61), a second sound source (62), a third sound source (63) and a fourth sound source (64), said first sound source (61), second sound source (62), third sound source (63) and fourth sound source (64) are respectively connected to pin 11 and pin 16, pin 10 and pin 15, pin 9 and pin 14 and pin 8 and pin 13 of audio processing chip (7).

4. The terminal control integrated active wall-mounted sound box system according to claim 3, wherein the number of the first indicator light (31) and the number of the second indicator light (32) are four, and the four indicator lights correspond to the first sound source (61), the second sound source (62), the third sound source (63) and the fourth sound source (64), respectively, and are used for indicating the current use condition of the sound sources.

5. The terminal-control integrated active wall-mounted sound box system according to claim 1, wherein the first display screen (21) and the second display screen (22) are both LED digital display screens.

6. A terminal control integrated active wall-mounted sound box system according to claim 1, wherein the first network port (51) and the second network port (52) are RJ45 interfaces, and the network cable (9) is twisted pair.

7. A terminal-controlled integrated active wall-mounted sound box system according to claim 1, wherein the first encoder (41) and the second encoder (42) are EC11 encoders.

8. The terminal-control integrated active wall-mounted sound box system according to claim 2, wherein the audio processing chip (7) and the second microcontroller (12) are controlled by a serial port to realize bidirectional transmission.

9. The system as claimed in claim 1, wherein the control panel is mounted on a platform and the wall-mounted speaker is mounted on a wall when the system is applied to a multimedia classroom or a multimedia conference room.