1. System conditions and program requirements:
There are 16 classrooms in our school to be built into multimedia classrooms, the specific requirements are as follows:
Each classroom is equipped with a projector, computer, projection screen, booth, camera, DVD player, power amplifier, speaker, microphone, etc.
The equipment in each classroom is centrally controlled and equipped with a full anti-theft podium.
The control room can manage and control the equipment in each classroom, and record real-time video in each classroom.
Demonstration classes can be given in each classroom and broadcast live via the Internet.
16 classrooms can realize interactive teaching and video conference functions.
On campus, online students can choose any teacher's course in 16 classrooms through the network to conduct remote real-time lectures.
Please design a solution and list the equipment.
2. System design analysis:
1. The general classroom area is generally 60-80 square meters, so the brightness of the projector is usually selected from 1800 lumens to 2500 lumens, the resolution can be selected from 800 * 600, or 1024 * 768, and the electric screen is 100 or 120 inches. For the video display stand, a common analog stand can be used.
2. Since 16 classrooms are required to realize interactive teaching and video conference functions, the central control part of the entire system adopts Jinmai Video GMTD-NET network multimedia central control system, one set for each classroom, the system can integrate each classroom The on-site audio and video signals are compressed into digital signals in real time and sent to the network. Each terminal on the network can watch the live situation of different classrooms in real time through browsing software.
3. Because the classroom area is not large, the classroom sound reinforcement system chooses an ordinary power amplifier, two 60W speakers can be used, the microphone chooses ordinary conference microphone, the audio signal output by the power amplifier or DVD is switched from the central control to the multimedia computer compression The audio input terminal of the card is compressed and sent to the Internet.
4. A camera integrated machine is installed at the back of each classroom, and is equipped with an all-round gimbal and decoder. Through the network control software, the gimbal can be controlled to move up, down, left and right, and the change of the lens focal length and aperture to achieve the best video Image effects.
5. Various video signals are input to the video input terminal of the multimedia computer compression card after being switched by the central control, compressed and sent to the Internet.
6. The entire system is required to have a centralized management function, so the control center is equipped with a network central management server. The server can control the equipment of each classroom, and can also record the content of each classroom media playback or live live recording.
7. After installing the Jinmai Video Network Central Control Classroom software on the multimedia computers in 16 classrooms, the corresponding hardware can be used to implement interactive teaching and video conferencing between classrooms. For example, a classroom teacher is teaching a demonstration class and another classroom Students can ask and answer questions in the classroom through the system. The instructor can see the students ’questions in real time through the system and communicate with students in other classrooms through the system.
8. Install the GMTD-PLAYER browsing software on each terminal that needs to have remote teaching function on the campus network, and students can select any teacher's course in 16 classrooms through the network to conduct remote real-time lectures.
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