CN217741892U

CN217741892U - Multi-person conference speech control system

Info

Publication number: CN217741892U
Application number: CN202221133409.7U
Authority: CN
Inventors: 张芯; 周睿京; 柏海涛
Original assignee: Intelligent Automation Equipment Zhuhai Co Ltd
Current assignee: Intelligent Automation Equipment Zhuhai Co Ltd
Priority date: 2022-05-12
Filing date: 2022-05-12
Publication date: 2022-11-04
Anticipated expiration: 2032-05-12

Abstract

The utility model aims at providing a many people's meeting speech control system convenient to go on simultaneously off-line on-line. The utility model discloses an audio conversion module, communication module, control module and many microphones break-make matrix, audio conversion module passes through communication module and computer communication cooperation, the output of many microphones break-make matrix with audio conversion module signal of telecommunication is connected, many microphones break-make matrix includes a plurality of first connection interface and a plurality of relay, and is a plurality of first connection interface corresponds a plurality of the relay with audio conversion module connects, and is a plurality of the coil of relay all with control module connects. The utility model discloses be applied to meeting communication system's technical field.

Description

Multi-person conference speech control system

Technical Field

The utility model discloses be applied to conference communication system's technical field, in particular to many people's meeting speech control system.

Background

Due to the occurrence of an epidemic and isolation limitation, in order to reduce the risk of spreading the epidemic, the traditional offline meeting mode has to be changed, and an online meeting and an offline meeting are parallel to form a normal state. A conventional offline conference system has a microphone fixed to each seat, and this way causes a speaker to make a smaller sound when the speaker is far away from the seat. Because the online conference system is communicated by common software, generally one terminal computer can be used by one person without problems, but when a plurality of people use one computer to carry out a conference with other people, the problem that the speaking volume of the remote people is small can be caused. For a speaker to hear clearly, the speaker must step to the side of the microphone, which limits the speaker. Greatly influencing the expression of the lecturer and the communication of the participants.

Most of the current microphones are wired microphones, and the microphones are fixed, or a user must drag the microphones and the wires to use the microphones in a mobile way, so that the speaking of the speaker is inconvenient. There are also wireless microphones in the market, but because the number of channels is limited, only a few people can use the microphones, and when a conference is carried out by a plurality of people, the microphones need to be transferred, which is very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art not enough, provide one kind and be convenient for go on simultaneously and switch convenient many people's meeting speech control system between many speakers online offline.

The utility model adopts the technical proposal that: the utility model discloses an audio conversion module, communication module, control module and many microphones break-make matrix, audio conversion module passes through communication module and computer communication cooperation, the output of many microphones break-make matrix with audio conversion module electric signal connection, many microphones break-make matrix includes a plurality of first connection interface and a plurality of relay, and is a plurality of first connection interface corresponds a plurality of the relay with audio conversion module connects, and is a plurality of first connection interface all is connected with wireless microphone, and is a plurality of the coil of relay all with control module connects.

It can be seen from the above scheme that the audio conversion module converts the analog signals picked up by the microphone into digital signals, and then the communication module sends the digital signals to the computer, so that the computer sends the voice data to the other end of the conference through conference software to play, and the real-time online and offline conference is realized while the voice of the speaker is effectively transmitted. Through setting up multi-microphone on-off matrix realizes being connected to the multiunit wireless microphone simultaneously audio conversion module, and then realizes under the circumstances that has many lecturers, can switch its microphone to when different lecturers carry out the speech audio conversion module reaches and forwards to online meeting personnel, guarantees that every lecturer's pronunciation homoenergetic can convey. Meanwhile, the wireless microphones are adopted for connection, so that each speaker can be guaranteed not to be limited by the wiring harness and the position of the microphone, and the speaker can perform speech in a large space more flexibly in a wireless transmission mode. The control module is controlled by the host to control the on-off of the first connecting interface, so that the connected microphones are switched, and the connection control of one or more groups of microphones is realized.

Preferably, the audio conversion module includes an audio output chip of a type CM118B and a second connection interface, two ports of the second connection interface are respectively connected to an audio output port of the audio output chip through a filter capacitor, and a communication output port of the audio output chip is connected to the communication module.

According to the scheme, the second connection interface is used for being connected with the loudspeaker, outputting the audio data received by the online conference, further playing the voice of online conference personnel, and realizing the interaction of the online conference and the offline conference.

Preferably, the communication module includes a USB interface and a line protector with a model number NUP4202W1T2G, the second pin of the USB interface and the fourth pin of the line protector are both connected to the USB _ AUDIO _ N port of the AUDIO conversion module, the third pin of the USB interface is connected to the USB _ AUDIO _ P port of the AUDIO conversion module, and the first pin of the line protector is connected to the first pin of the USB interface.

According to the scheme, the audio digital signals converted by the audio conversion module are transmitted to the computer through the USB interface, and the line protector is used for protecting the line, so that the device is prevented from being damaged by surge.

One preferred scheme is that the control module comprises an FPGA chip with the model of GW1NZ-LV1QN48C 6I 5 and a plurality of control keys, the control keys are all connected with a receiving port of the FPGA chip, a plurality of control output ports of the FPGA chip are respectively connected with a plurality of coils of the relay through corresponding field effect tubes, the control output ports of the FPGA chip are connected with grids of the field effect tubes, drain electrodes of the field effect tubes are connected with one ends of the coils of the relay, source electrodes of the field effect tubes are grounded, and the other ends of the coils of the relay are connected with a power supply.

According to the scheme, line control is achieved through the FPGA chip, the control key is pressed by a host to enable the control key to feed back an electric signal, the FPGA chip controls the corresponding line conduction of the electric signal according to a set program, the level state of an output end is further controlled, the field effect tube responds to the level state to conduct the coil of the relay with the power supply, and the wireless microphone connected with the corresponding first connecting interface is conducted with the audio conversion module to be converted.

Preferably, the multi-person conference talk control system further includes a power module, where the power module includes a first power chip with a type TLV1117-33IDCYR and a second power chip with a type TLV74312PDBVR, the first power chip is configured to provide a 3.3V working voltage for each module, and the second power chip is configured to provide a 1.2V working voltage for each module.

According to the scheme, the power supply module is used for providing working voltage for each module.

Drawings

FIG. 1 is a schematic block diagram of the present invention;

FIG. 2 is a circuit schematic of the audio conversion module and the communication module;

FIG. 3 is a circuit schematic of the control module;

FIG. 4 is a circuit schematic of the multi-microphone on-off matrix;

fig. 5 is a circuit schematic of the power supply module.

Detailed Description

As shown in fig. 1 to 5, in this embodiment, the utility model discloses an audio conversion module 1, communication module 2, control module 3 and many microphones on-off matrix 4, audio conversion module 1's communication output port passes through communication module 2 cooperates with computer communication, many microphones on-off matrix 4's output with audio conversion module 1 electricity signal connection, many microphones on-off matrix 4 includes a plurality of first connection interface and a plurality of relay, and is a plurality of first connection interface corresponds through a plurality of the relay with audio conversion module 1's input port is connected, and is a plurality of first connection interface all is connected with wireless microphone, a plurality of the coil of relay all with control module 3 connects. The wireless microphone is a wireless microphone device of a green alliance or Rode manufacturer and the like.

In this embodiment, the audio conversion module 1 includes an audio output chip U701 with a model of CM118B and a second connection interface J701, two ports of the second connection interface J701 are respectively connected to an audio output port of the audio output chip U701 through a filter capacitor, and a communication output port of the audio output chip U701 is connected to the communication module 2.

In this embodiment, the communication module 2 includes a USB interface J702 and a line protector U703 with a model number NUP4202W1T2G, a second pin of the USB interface J702 and a fourth pin of the line protector U703 are both connected to the USB _ AUDIO _ N port of the AUDIO conversion module 1, a third pin of the USB interface J702 is connected to the USB _ AUDIO _ P port of the AUDIO conversion module 1, and a first pin of the line protector U703 is connected to the first pin of the USB interface J702.

In this embodiment, the control module 3 includes an FPGA chip U801 with a model of GW1NZ-LV1QN48C6/I5 and a plurality of control keys, the plurality of control keys are all connected with a receiving port of the FPGA chip U801, a plurality of control output ports of the FPGA chip U801 are connected with a plurality of coils of the relay through corresponding field effect transistors, the control output port of the FPGA chip U801 is connected with a gate of the field effect transistor, a drain of the field effect transistor is connected with one end of the coil of the relay, a source of the field effect transistor is grounded, and the other end of the coil of the relay is connected with a power supply.

In this embodiment, the multi-person conference talk control system further includes a power module, where the power module includes a first power chip U601 with a model number of TLV1117-33IDCYR and a second power chip U602 with a model number of TLV74312PDBVR, the first power chip U601 is configured to provide a 3.3V working voltage for each module, and the second power chip U602 is configured to provide a 1.2V working voltage for each module.

The utility model discloses a theory of operation:

the presenter sends on-off signals to the FPGA chip U801 through the control keys of the control module, the control output port corresponding to the FPGA chip U801 adjusts output level, triggers the corresponding field effect transistor, further enables the coil of the corresponding relay to be electrified, enables the corresponding first connection interface to be conducted with the audio conversion module 1, the audio conversion module 1 converts analog signals into digital signals and outputs the digital signals to a computer, and conference software on the computer reads audio data to achieve online conference conversation.

The host can control one or more groups of the first connection interfaces to be conducted with the audio conversion module 1.

Claims

1. A multi-person conference floor control system, characterized by: the audio conversion device comprises an audio conversion module (1), a communication module (2), a control module (3) and a multi-microphone on-off matrix (4), wherein a communication output port of the audio conversion module (1) is matched with a computer in a communication mode through the communication module (2), the output end of the multi-microphone on-off matrix (4) is connected with an audio conversion module (1) through an electric signal, the multi-microphone on-off matrix (4) comprises a plurality of first connecting interfaces and a plurality of relays, the first connecting interfaces are correspondingly connected with input ports of the audio conversion module (1) through the relays, the first connecting interfaces are connected with wireless microphones, and coils of the relays are connected with the control module (3).

2. The multi-person conference floor control system of claim 1, wherein: the audio conversion module (1) comprises an audio output chip (U701) with the model number of CM118B and a second connection interface (J701), two ports of the second connection interface (J701) are respectively connected with an audio output port of the audio output chip (U701) through filter capacitors, and a communication output port of the audio output chip (U701) is connected with the communication module (2).

3. The multi-person conference floor control system of claim 1, wherein: the communication module (2) comprises a USB interface (J702) and a line protector (U703) with the model number NUP4202W1T2G, wherein a second pin of the USB interface (J702) and a fourth pin of the line protector (U703) are both connected with a USB _ AUDIO _ N port of the AUDIO conversion module (1), a third pin of the USB interface (J702) is connected with a USB _ AUDIO _ P port of the AUDIO conversion module (1), and a first pin of the line protector (U703) is connected with a first pin of the USB interface (J702).

4. The multi-person conference floor control system of claim 1, wherein: the control module (3) comprises an FPGA chip (U801) with the model of GW1NZ-LV1QN48C6/I5 and a plurality of control keys, the control keys are all connected with a receiving port of the FPGA chip (U801), a plurality of control output ports of the FPGA chip (U801) are respectively connected with a plurality of coils of the relay through corresponding field effect tubes, the control output ports of the FPGA chip (U801) are connected with grids of the field effect tubes, drain electrodes of the field effect tubes are connected with one ends of the coils of the relay, source electrodes of the field effect tubes are grounded, and the other ends of the coils of the relay are connected with a power supply.

5. The multi-person conference floor control system of claim 1, wherein: the multi-person conference speaking control system further comprises a power supply module, wherein the power supply module comprises a first power supply chip (U601) with the model number of TLV1117-33IDCYR and a second power supply chip (U602) with the model number of TLV74312PDBVR, the first power supply chip (U601) is used for providing 3.3V working voltage for each module, and the second power supply chip (U602) is used for providing 1.2V working voltage for each module.