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Scheme design of modern intelligent conference system

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Design of modern intelligent conference system ? Design of central control conference system

(source: Longjie, Shanghai, ? Q Q :95571530 , TEL:134-727-99199

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one Introduction

With the continuous development of information technology, a modern multi-functional conference room should not only meet the traditional and simple meeting requirements, but also have elegant style of beautiful sound quality and clear image demonstration. It is composed of large screen display, multimedia audio and video signal source, audio, switching and central integrated control DVD And video recorder, physical objects and picture and text transmission, through the large screen projector to restore its image, through the central integrated control equipment, control all indoor video and audio equipment, signal switching, lighting, screen lifting, volume adjustment and other functions, greatly improving the working efficiency of the meeting and simplifying the complex operation, which can be used by all people without professional knowledge.

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two System design function

The main functions of the system are as follows

A Convenient access to the Internet and data

B Can switch audio and video sources at will

C High quality audio restoration to ensure voice quality

D Digital Control Conference

E Projection system for large screen display

F Remote conference system for remote internal and external demonstration and conference

G Central control system for centralized control management

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three System design scheme

Shanghai Jielong (MCCS) The intelligent multimedia conference system realizes the seamless connection between the digital conference system and the central control system, and integrates multiple subsystems, including audio amplifying system, conference discussion system, simultaneous interpretation system, voting system, automatic tracking camera system, multimedia video system and network video conference system. Under the control of wireless touch screen, it is controlled by central integration The system combines the above subsystems and the whole conference environment into a whole, and realizes the intelligent management of the conference.

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three point one ? Central control system

The central control equipment is the soul of the system design, which integrates the control means of lighting, machinery, projection and audio-visual, and provides users with simple and direct control scheme, so that users can easily master the status and functions of the equipment in the whole space environment.

The central controller is the core of the whole system. It is connected with each equipment by control bus, receives the control request from the operator, and then sends control instructions to each extended control equipment and controlled equipment. All control functions are programmed by special system software, and specific control can be realized through color LCD touch screen or ordinary PC Computer implementation. According to the actual requirements of users, the operation interface is intuitive and easy to understand and operate.

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Control effect:

A . it can control the operation of all kinds of video and audio equipment according to the needs (such as simple functions such as playing and stopping, and advanced adjustment such as setting the equipment);

B According to the needs, through the control of various professional matrixes and related equipment, various kinds of sounds can be completed / regard / Computer signal switching and adjusting signal path;

C The volume can be controlled by the volume controller;

D The incandescent lamp of the conference center can be adjusted steplessly by the light regulator, and the fluorescent lamp group can also be switched;

E Through the power controller, the control of electric curtain and electric screen, the switch of electromagnetic lock and the control of electrified single transparent glass are completed;

F , Longjie (MCCS) The central control equipment can design programs according to different needs, such as various lighting modes, dimming rate, password protection, etc., which can be adjusted according to the actual use. According to the specific needs of users, it can write serial operation program, which can complete multiple actions with only one instruction.

G , through RS485 The video signal of the camera is output to the display device through the audio and video matrix switcher.

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three point two ? Sound reinforcement system

The sound effect of the multi-functional conference hall should meet the acoustic characteristic index standard of the national hall sound reinforcement system design. On the basis of building acoustic coordination, it is generally necessary to use sound reinforcement equipment for sound effect compensation.

The sound reinforcement system is mainly composed of three parts: sound source, central control processing equipment (mixer) and loudspeaker system.

Sound source: mainly including conference microphone and recording and playing cassette, DVD Video disc player and other sound source equipment can play ordinary or metal tape, CD record, DVD Video, audio and video cassette can also record conference broadcast with high quality.

Multi channel conference special mixer: it is the central control equipment of the system, which can carry out multi-channel audio signal mixing amplification, switching, high and low tone adjustment, effect compensation control, volume adjustment, recording and playing;

Loudspeakers: the sound quality and sound field uniformity of the whole sound reinforcement system mainly depend on the quality and layout of loudspeakers.

The design of sound reinforcement system usually starts from the sound field design, because the sound field design is the basis to meet the system function and sound effect, involving the selection of loudspeaker system, sound supply scheme and signal path, which is a very complicated and tedious work. Due to the rapid development of computer technology, special acoustic software tools can be used to calculate the sound field to meet the expected requirements. After the loudspeaker system is determined, the driving power of the power amplifier can be calculated and the driving signal path can be determined; then, according to the distribution scheme of the driving power, the signal processing scheme and the selection of the mixer can be further determined.

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   three point three ? Conference speech system

Conference speech system includes hand-in-hand conference discussion system, voting system and simultaneous interpretation system.

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   3.3.1 Hand in hand conference discussion system

In the system, all microphones are connected in series with special wires, and finally to the conference host, just like hand in hand. In the exchange of large and medium-sized group meetings, there are many speakers at the meeting. The hand-in-hand conference speech system can ensure that everyone can speak conveniently, and at the same time, it is convenient for meeting management.

The system generally consists of one The chairman speaker (controller) controls several representative speakers. The system composition and functions are as follows:

Chairman's speech machine: it has the priority to speak, the right to control the speech and the right to set up the system;

Representative Speaker: it has the functions of applying for speaking, queuing for speaking and listening to speeches; each system can be set two hundred and fifty Speech machines;

Conference host: accept the command of the chairman and control the representative machine.

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   3.3.2 voting system

The voting function is added to each device of the conference discussion system, which is used for election and voting meeting. Its main equipment includes:

Voting device: for delegates to vote;

Data display: used to display the meeting agenda, delegates and conference background information, voting results and other information;

Representative Identity Manager: used to confirm the representative identity;

Voting management software: the software is used to manage complex voting meetings, including microphone management, voting management, sign in management, simultaneous transmission system management and other functional modules.

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   3.3.3 Simultaneous interpretation system

It is used for international meetings and exchanges. In the process of using multi lingual representatives to hold a meeting together, when the representatives of any language speak, they will be translated into other languages by simultaneous translators, and then sent to each representative through the language distribution system, so that they can choose the language they understand and achieve the goal of multilingual communication.

The following functions are added to the system for simultaneous interpretation

Interpreter machine: let the interpreter transmit the translated language to the system, and let the representatives to listen to it;

Language distribution system: the language distribution system of simultaneous interpretation system uses infrared wireless system, which has stable performance. Infrared ray can not pass through the wall and has confidentiality;

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   three point four Automatic tracking camera system

The automatic tracking camera system can provide high-quality video signal resources for the conference. It can be activated by digital speech system, which can accurately and quickly close-up the speaker in the case of unmanned operation. The collected signals can be output to large screen back projection system and remote video conference system.

Generally speaking, the automatic tracking camera system requires several high-speed hemispherical cameras installed vertically on the top of the conference table to collect the close-up of the speaker. A fixed panoramic camera is installed above the large screen in the conference room to shoot the whole scene when no one speaks.

A control port of the central controller of the speech system is connected to the control port of the video matrix. When a microphone of the speech system is turned on, the central controller sends the serial port command to the video matrix. According to the preset operation procedure, the video matrix sends the operation command to the corresponding camera, and outputs the shooting signal of the camera from the output port to the video matrix Video system or remote video conference system.

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   ? three point five Multimedia video system

With the development of computer technology, multimedia video system has become an indispensable part of modern conference system. Its contents mainly include projection system, physical projection system, intelligent whiteboard, etc. to meet the needs of modern information exchange. Through it, other existing signals, such as closed-circuit television, broadcast television, network video conference signals, can be sent into the multimedia conference system; and the multimedia conference signals of each venue can be sent out to the network outlet for network video conference communication.

Multimedia projector: professional multimedia projector with high brightness (2900ANS Liuming ) , high resolution (1024*768 And 1280*1024) Real color display function, not only can play video recorder LD DVD The video image of DVD player can also be displayed on the large screen (150 inch ) Projection of computer graphics and text on real world ( Or computer network information ) This function is especially suitable for project introduction, lecture teaching, etc;

Physical display platform: high brightness physical display platform, which can transmit any material object, lecture notes and slides to the projector after being photographed, and projected on the large screen to show to the audience;

Electronic whiteboard: the equipment can project the contents of the display screen of the notebook computer used in the lecture on the electronic whiteboard through the projector, and let the lecturer directly control the computer demonstration program on the electronic whiteboard, and write, mark, save, and discuss in different places through network conference equipment. It is an essential and effective communication of modern multimedia conference system Stream tools.

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four Conclusion

Dragon Kingdom (MCCS) Compared with the previous conference system, the intelligent central control conference system has obvious advantages: the integrated design makes all the equipment in the conference room organically unified, thus greatly enriching the function of the whole conference and obviously improving the efficiency. The intuitive and visual operation interface of LCD touch screen makes the control of various devices easy and fast.

Company main: conference room sound system engineering, stage lighting sound engineering, karaoke sound