Multimedia classroom solutions
1. System Overview
Today, paying attention to the impact of modern educational technology on education and vigorously promoting the modernization of education is the mainstream of the development of education in the world. In the process of using modern educational technology to integrate teaching, China has achieved considerable results. Using advanced teaching methods and providing a new teaching environment to design teaching activities has become a market trend.
With the continuous advancement of modern teaching systems in universities and colleges, the traditional methods have been unable to meet the needs of modernization. The new modern education system integrating multi-function classroom system, multimedia teaching system, and broadcasting system has become increasingly widespread in the education industry. Application. As a new form of education and modern teaching methods, multimedia technology has brought new opportunities to the education industry.
Second, user needs
The whole system should complete the teaching tasks efficiently, combine each system, give full play to the functions of each system, and realize the modern teaching.
(1) Multimedia display system:
The multimedia display system consists of a high-brightness, high-resolution LCD projector and a motorized screen; it completes a large screen display of various graphic information.
(2) A / V system:
The A / V system is composed of A / V equipment such as computers, DVDs, VCRs (video recorders), physical exhibition stands, power amplifiers, speakers, etc .; completes all kinds of graphic information (including the use of various software, DVD / CD discs, video tapes, Various physical, sound) playback functions; to achieve on-site sound reinforcement and broadcast of multimedia video classrooms, with large-screen projection system to provide excellent audio-visual effects.
(3) Intelligent multimedia central control system:
Adopt the American CRESTRON (Crestron) central control system with the highest grade, the most mature technology, the most complete functions and the most versatile in the world. This system is the most advanced central control system equipment in the world. Realize the centralized control of various electronic devices in the multimedia classroom.
Requires simple operation, humanization, and intelligence; requires high reliability of the entire system; as much as possible to reflect the excellent functions of various devices, let all devices work in the best state, and maximize the effectiveness of the device; able to control the projector, proceed On / off, input switching and other functions; and realize the screen up, stop, and down functions; can control DVD, VCR to play, stop, pause, etc .; can control the physical exhibition stand to zoom in and out; can control the volume, proceed Volume adjustment function; can achieve automatic switching control of audio, video and VGA signals;(4) Equipment list:
The equipment list of the entire system (including control mode analysis) is as follows:
User equipment name quantity unit controlled method Crestron control equipment projector 1 RS232 port on the host computer RS232 port electric screen 1 relay (relay) CNPCI-8 computer 1 control image switching control projector to switch images DVD 1 IR (infrared ) IRP2 VCR 1 IR (infrared) IRP2 physical exhibition stand 1 IR (infrared) IRP2 amplifier 1 set to control the volume Use the host's built-in volume control module speaker 1 for reserved video image port without control 1 control image switch control projector to carry out images Switch reserved computer image port 1 to control image switching control projector to switch images3. Product List
According to the above equipment, list and description of Crestron central control equipment:
Model description quantity description MP2 second generation control host with 4 × 2 video switching, 7 × 1 audio switching, built-in volume control function 1 Receive touch screen control signal, explain and execute STI-1700C 6 "wireless color touch 1 with STI- DSN charging stand, ST-BTPN rechargeable battery CNRFGWA one-way wireless receiver 1 Receive the control command of STI-1700C, and send it to the host CNPCI-8 8-channel high-power relay module 1 Control screen, equipment power supply, projector power supply IRP2 infrared emitter 3 Control infrared equipment, such as DVD / VCR / kinetic boothFourth, the system diagram
V. Functional description
By installing the above Crestron central control system, it is possible to easily realize intelligent and humanized modern teaching:
1. Control of multimedia display system:
Through the serial port (RS232 / RS422 / RS485 port) behind the host, control all the functions of the projector, such as on / off, VIDEO / VGA input switching, etc .; and can automatically achieve associated actions, such as shutting down the system
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