CN217789889U

CN217789889U - Directional sound transmission device

Info

Publication number: CN217789889U
Application number: CN202221406487.XU
Authority: CN
Inventors: 尹国凯; 韩金钊; 尤春明; 窦志强
Original assignee: Shandong Lingchuang Industrial Design Co ltd
Current assignee: Shandong Lingchuang Industrial Design Co ltd
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-11-11
Anticipated expiration: 2032-06-07

Abstract

The utility model discloses a directional sound transmission device, collect MIC, ANC initiative and fall chip, bluetooth module, ultrasonic signal modulator, central processing unit, audio power amplifier circuit, directive property piezoelectric film speaker A, directive property piezoelectric film speaker B, battery management module, battery and intelligent control switch of making an uproar including directive property pickup MIC, ambient noise. The utility model discloses can utilize directive property piezoelectric film speaker A to carry out directional transaudient, carry out directional isolation through directive property piezoelectric film speaker B in addition and fall and make an uproar for the device can broadcast in the specified area, has effectively avoided causing the interference to other people outside the area, under the cooperation of battery, battery management module, mouth and intelligent control switch charge in addition, can be full of the battery automatic power off, has effectively avoided the phenomenon that the overcharge appears in the battery.

Description

Directional sound transmission device

Technical Field

The utility model relates to a directional transaudient technical field especially relates to a directional transaudient device.

Background

Broadcasting is well known as an information transmission medium for a long time and is widely applied in daily life, the broadcasting is developing towards digitization, networking and intellectualization, but the broadcasting is not only played for users, but also played for other people, and a phenomenon of disturbing other people occurs, and based on the problem, a directional sound transmission device is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a directional sound transmission device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a directional sound transmission device, collect MIC including directive property pickup MIC, ambient noise, ANC initiatively falls chip, bluetooth module, ultrasonic signal modulator, central processing unit, audio power amplifier circuit, directive property piezoelectric film speaker A, directive property piezoelectric film speaker B, battery management module, battery and intelligent control switch, directive property pickup MIC's output and ambient noise collect MIC's output and same ANC initiatively fall chip electric connection of making an uproar, ANC initiatively falls the output of chip and passes through bluetooth module and ultrasonic signal modulator electric connection, ultrasonic signal modulator's output and central processing unit electric connection, central processing unit's output respectively with audio power amplifier circuit and battery management module electric connection, audio power amplifier circuit's output respectively with directive property piezoelectric film speaker A and directive property piezoelectric film speaker B electric connection, battery management module electric connection have one with battery input end electric connection's intelligent control switch, the output of battery and central processing unit's feed end electric connection, the battery has a charging mouth that is used for charging through intelligent control switch electric connection, the electric quantity detection end of battery still with battery management module electric connection.

Preferably, the battery management module is electrically connected with an indicator light for indicating the electric quantity.

Preferably, the directional sound pickup MIC is used for collecting human voice in a designated area, and noise reduction processing is performed through an ANC active noise reduction chip.

Preferably, the MIC is used to collect ambient noise in a designated area, and perform noise reduction processing on the ambient noise by using an ANC active noise reduction chip.

Preferably, the ANC active noise reduction chip is internally provided with a noise reduction algorithm, the noise reduction algorithm transmits the processed sound or noise to the ultrasonic signal modulator through the bluetooth module, and the ultrasonic signal modulator transmits the received sound or noise to the central processing unit for processing.

Preferably, the central processing unit sends the processed sound to the directional piezoelectric film speaker a through the audio power amplification circuit for directional sound transmission, and the central processing unit also sends the processed noise to the directional piezoelectric film speaker B through the audio power amplification circuit for directional isolation and noise reduction.

Preferably, the battery management module detects the electric quantity of the storage battery and displays the electric quantity of the storage battery through the indicator light under the control of the central processing unit, and automatically controls the intelligent control switch to be switched off when the storage battery is fully charged or to be switched on when the storage battery is in low electric quantity.

The utility model discloses can utilize directive property piezoelectricity film speaker A to carry out directional transaudient, carry out directional isolated noise reduction through directive property piezoelectricity film speaker B in addition for the device can broadcast in the specified area, has effectively avoided causing the interference to other people outside the area, in addition under battery, battery management module, the mouth that charges and intelligent control switch's cooperation, can be full of the battery when auto-power-off, has effectively avoided the battery phenomenon that overcharges to appear.

Drawings

Fig. 1 is a system connection block diagram of a directional sound transmission device according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1, a directional sound transmission device includes a directional pickup MIC, an environmental noise collecting MIC, an ANC active noise reduction chip, a bluetooth module, an ultrasonic signal modulator, a central processing unit, an audio power amplifying circuit, a directional piezoelectric film speaker a, a directional piezoelectric film speaker B, a battery management module, a storage battery, and an intelligent control switch, wherein an output terminal of the directional pickup MIC and an output terminal of the environmental noise collecting MIC are electrically connected to the same ANC active noise reduction chip, the directional pickup MIC is used for collecting human voice in a designated area and performing noise reduction processing through the ANC active noise reduction chip, the environmental noise collecting MIC is used for collecting environmental noise in the designated area and performing noise reduction processing through the ANC active noise reduction chip, an output terminal of the ANC active noise reduction chip is electrically connected to the ultrasonic signal modulator through the bluetooth module, a noise reduction algorithm is built in the ANC active noise reduction chip, which transmits processed voice or noise to the ultrasonic signal modulator through the bluetooth module, the ultrasonic signal modulator transmits the received voice or noise to the central processing unit for processing through the directional film speaker, an output terminal of the ultrasonic signal modulator is electrically connected to the central processing circuit, the directional sound amplifying circuit and the directional piezoelectric film speaker B through the directional piezoelectric film speaker, the directional film speaker B, the directional sound amplifying circuit and the directional piezoelectric film speaker B are electrically connected to the audio signal processing circuit, the utility model discloses a battery management module electric connection has one with battery input end electric connection's intelligent control switch, the output of battery and central processing unit's feeder ear electric connection, the battery has a mouth that charges that is used for storage battery charging through intelligent control switch electric connection, the electric quantity detection end of battery still with battery management module electric connection, battery management module electric connection has the pilot lamp that is used for instructing the electric quantity, battery management module is under central processing unit's control, on the one hand detects the electric quantity of battery and shows the electric quantity of battery through the pilot lamp, on the other hand automatic control intelligent control switch breaks off when the battery is full of or automatic control intelligent control switch switches on when the battery is low-power, the utility model discloses can utilize directive property piezoelectricity film loudspeaker A to carry out directional biography sound, in addition carry out directional isolated noise reduction through directive property piezoelectricity film loudspeaker B, make the device can broadcast in the appointed area, effectively avoided causing the interference to other people outside the area, in addition under the battery, battery management module, the cooperation of charging mouth and intelligent control switch, can be full of battery, automatic power-off when the battery is full of, effectively avoided the phenomenon that the battery appears overcharging.

The utility model discloses in, directive property pickup MIC collects the people's voice in appointed area, and fall the noise processing through ANC initiative noise reduction chip, ambient noise collects MIC and collects the ambient noise in appointed area, and fall the noise processing through ANC initiative noise reduction chip, ANC initiative noise reduction chip will be handled sound or noise through sending the bluetooth module to ultrasonic signal modulator, ultrasonic signal modulator sends the sound or the noise of receiving to central processing unit and handles, central processing unit sends the sound after handling to directive property piezoelectric film speaker A through audio power amplifier circuit and carries out the directional sound transmission, central processing unit still sends the noise after handling to directive property piezoelectric film speaker B through audio power amplifier circuit and carries out the directional isolated noise reduction, make the device can broadcast in appointed area, effectively avoided causing the interference to other people outside the area;

in addition, the battery management module is controlled by the central processing unit, on one hand, the electric quantity of the storage battery is detected and displayed through the indicating lamp, and on the other hand, the intelligent control switch is automatically controlled to be switched off when the storage battery is fully charged, so that the device can also automatically power off when the storage battery is fully charged, and the phenomenon of overcharge of the storage battery is effectively avoided.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a directional sound transmission device, collect MIC including directive property pickup MIC, ambient noise, ANC initiatively falls chip, bluetooth module, ultrasonic signal modulator, central processing unit, audio power amplifier circuit, directive property piezoelectric film speaker A, directive property piezoelectric film speaker B, battery management module, battery and intelligent control switch, a serial communication port, directive property pickup MIC's output and ambient noise collect MIC's output and same ANC initiatively fall chip electric connection of falling, ANC initiatively falls the output of chip of falling and passes through bluetooth module and ultrasonic signal modulator electric connection, ultrasonic signal modulator's output and central processing unit electric connection, central processing unit's output respectively with audio power amplifier circuit and battery management module electric connection, audio power amplifier circuit's output respectively with directive property piezoelectric film speaker A and directive property piezoelectric film speaker B electric connection, battery management module electric connection has an intelligent control switch with battery input end electric connection, the output of battery and central processing unit's supply end electric connection, the battery has a charging port that is used for battery charging through intelligent control switch electric connection, the sense terminal of battery still with battery management module electric connection.

2. The directional sound transmission device according to claim 1, wherein the battery management module is electrically connected with an indicator light for indicating the amount of electricity.

3. The directional sound transmission device according to claim 1, wherein the directional sound pickup MIC is used for collecting human voice in a designated area and performing noise reduction processing by an ANC active noise reduction chip.

4. The directional sound transmission device according to claim 1, wherein the ambient noise collection MIC is used for collecting ambient noise in a designated area, and performing noise reduction processing by using an ANC active noise reduction chip.

5. A directional sound transmission device according to claim 4, wherein the ANC active noise reduction chip is provided with a noise reduction algorithm, and the noise reduction algorithm transmits the processed sound or noise to the ultrasonic signal modulator through the Bluetooth module, and the ultrasonic signal modulator transmits the received sound or noise to the central processing unit for processing.

6. The directional sound transmission device according to claim 5, wherein the central processing unit sends the processed sound to the directional piezoelectric film speaker a through the audio power amplifier circuit for directional sound transmission, and sends the processed noise to the directional piezoelectric film speaker B through the audio power amplifier circuit for directional isolation and noise reduction.

7. The directional sound transmission device according to claim 2, wherein the battery management module, under the control of the central processing unit, detects the power of the storage battery and displays the power of the storage battery through the indicator light, and automatically controls the intelligent control switch to be turned off when the storage battery is fully charged or to be turned on when the storage battery is in a low power state.