2、System design features
Intelligent multimedia conferencing system functions:
◇ convenient Internet access can call the information
◇ can switch audio and video source
◇ restore high-quality sound to ensure that the voice quality
◇ Digital Conference System Conference
◇ large-screen projection display systems
◇ remote teleconferencing system for presentations and meetings inside and outside
◇ centralized control system in the control and management
3、System design
Intelligent multimedia conferencing system, digital conference system with the central control system for seamless, integrated stereo sound reinforcement system, including the meeting system, simultaneous interpretation system, voting system, automatic tracking camera system, multimedia video systems and network video conferencing systems and other subsystems; in the wireless touch-screen control through the central control system integration of the subsystems will be meeting with the whole environment to be a combination of organic whole, the realization of the intelligent management of the meeting.
3.1 Central control system
Central control equipment of the soul-centered system design, focus on the lighting, machinery, projection and video and audio controls in one, in order to provide simple, direct control of the program, so that users can easily grasp the space environment throughout the state of the equipment and functions.
The whole system as the core to the central controller. It to control the bus and all devices connected to receive control of the control issue, and then extended to all control equipment and control equipment orders charged. All control system through a dedicated software from the specific control can be color LCD touch-screen machine or an ordinary PC to achieve. Its user interface in accordance with the actual demands, and was intuitive and easy to understand (all Chinese, modular graphics), to operate.
Control:
◇ according to the need to control all types of video and audio equipment (such as play, stop, such as a simple function and set of equipment such as high-level adjustment);
◇ can be, through the matrix of the various professional and related control equipment, completion of various types of audio / visual / computer switching signal, adjusting the signal pathway;
◇ box can be completed through the volume control on the volume control;
◇ Conference Center can be split without the incandescent dimming level, it can switch to control fluorescent group;
◇ through the relay controller, the completion of electric curtains, electric screen control and the electromagnetic lock and power switch control of a single through the glass;
◇ central control equipment can be designed with different needs, such as a variety of lighting patterns, light speed, the right to use, such as password protection, coupled with adjustment of the actual use of the site. More can the specific needs of users, the preparation of operating procedures linked, only one will be able to complete more than action commands.
◇ through the RS485 interface, the use of the PTZ camera to achieve the conference room of the zoom camera and a full range of rotation, the camera video signal through the audio and video matrix switchers to switch output to display devices.
◇ Card with temperature through the temperature probe to test room temperature, and the realization of the switch on the touch screen display.
3.2 Stereo sound reinforcement system
Multi-functional conference room acoustics of the hall to be met by the State of the acoustic sound reinforcement system design characteristics of the standard indicators. With in architectural acoustics, based on the general needs through the use of sound reinforcement equipment, audio compensation.
The main sound reinforcement system has three major components: a sound source, the central control processing equipment (mixer), speaker system.
◇ sound source: the main including the microphone and audio tape recorders, DVD players and other sound source equipment, can be general or metal tape player, CD music, DVD audio and video images, tape recording the meeting can also be high-quality audio broadcasting .
◇ Multi-channel mixer dedicated session: is the system of central control equipment, can be mixed multi-channel audio signal amplification, switching, high-bass adjustment, the effect of the compensation control to adjust the volume size, sound recording, playback use;
◇ speaker: the sound quality of the sound reinforcement system and sound field uniformity depends primarily on the quality and speaker layout.
Sound reinforcement system design usually designed from the beginning of the sound field, because the sound field is designed to meet the system functions and sound basis, involving the selection of speaker systems for voice and signaling pathways such as the program is a very complicated task. Due to the rapid development of computer technology, and now may be a dedicated software tools for calculating the acoustics in order to meet the expected requirements of the design of sound field programs. Speaker system identified only after the power amplifier drives the calculation and identification of signaling pathways drive; and then again in accordance with the distribution of drive power to further determine the signal processing program and the selection, such as mixer.
3.3 Conference System
Conference system, including holding hands meeting to discuss the system, voting system and simultaneous interpretation system.
3.3.1 Hand in hand to discuss the system
System between all microphone in series with a dedicated line, and the last to host the meeting, as a general hand in hand. Ongoing exchange of large group meeting, the meeting many speakers, the meeting system, hand in hand to ensure that each person can be very convenient, easy to conference management at the same time.
System in general by the President a plane (control plane) made by the representatives of a number of machine control, the system composition and functions are as follows:
Statement by the President ◇ Machine: a priority right to speak, to control the voice and the right system settings; the President of each system to set up a machine;
Vice-Chairman ◇ Machine: a priority right to speak, voice control; Vice-Chairman of each system to set up a machine;
◇ machine made by the representatives of: with an application to speak line up to listen to speech feature; each system can be set 5 to speak on behalf of 120 aircraft;
◇ Conference Host: President of machine instructions to accept, on behalf of local control.
3.3.2 voting system
Meeting to discuss the system in each device to increase the functional vote, and vote for the election meeting. Its main equipment includes:
◇ voting device: allowing participants to vote for;
◇ information display: to display the agenda of the meeting and the meeting on behalf of background information, voting results and other information; ◇ Identity Manager on behalf of: used to confirm the identity of the representative;
◇ vote management software: software used to manage the complexity of the voting-type meetings, there is a microphone management, voting management, attendance management, systems management, such as with the mass function.
3.3.3 Simultaneous interpretation system
Session to conduct international exchanges. The use of multilingual meetings with representatives of the participants of the process, when using any of the representative of a language to speak, by the simultaneous translators immediately translated into other languages through the language of each distribution system service on behalf of former participants, so that it can election by listening to understand their own language, to achieve the purpose of the exchange of multi-lingual.
The system is meeting to discuss the system in every device added to the language simultaneous interpretation system, channel selection features, and a corresponding increase in the equipment the following composition:
◇ Machine translators: Let translators to translate the language to be sent to the system so that participants choose to listen to;
◇ Language Distribution System: the language simultaneous interpretation system can be divided into distribution systems or wireless cable type:
◇ Wireless - can flow to use, equipment, space utilization high, the disadvantage of expensive equipment, not as good as cable-style secrecy; now use infrared wireless systems, performance, stability, infrared can not pass through walls, with confidentiality;
◇ Cable type - equipment cheap, stable performance, low maintenance costs, with confidentiality; disadvantage is that the construction of more complicated, inconvenient for mobile use.
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