Luxun Multimedia Solution
1. Multimedia classroom usage status
The day-to-day management of many school classrooms is the responsibility of the teachers in the school's audio-visual education center. Usually, the administrators take the key and run around the classroom, helping the teacher prepare the classroom environment, solve the teacher's problems, and close the multimedia classroom after class. The equipment in the multimedia classroom has a large workload and low efficiency.
2. Multimedia classroom development trends
As Minister of Education Chen Zhili pointed out at the National Conference on Information Technology Education in Primary and Secondary Schools: "Information technology has greatly expanded the boundaries of time and space in education and unprecedentedly increased people ’s interest, efficiency and initiative in learning. Multimedia teaching, computer teaching software, Distance education, virtual universities, etc. came into being. Advanced information technology has enabled the implementation of the principle of educational resource sharing, people have been or are fulfilling the requirements of listening to the world ’s high-level professor courses, and the degree of freedom in learning choices has been greatly improved. It is truly possible; academic exchanges have flourished unprecedentedly, cooperative research has been carried out on a global scale, and information production, dissemination, and application are developing at a rapid pace; the integration and mutual penetration of modern educational science, psychological science, and information science and technology have become educational development. And the powerful driving force of reform; the traditional teaching and learning model is brewing a major breakthrough, and education is facing the most profound change in history. This major change in education is not only a major change in the form of education and learning methods, but also more important Is to think about education , Concepts, models, content and methods have a profound impact. "
With the advancement of technology and the prosperity of the economy, the establishment and application of computer networks have become quite common. It internally integrates the computer resources on the campus and establishes a wide range of information acquisition and communication channels externally, which brings to the school ’s teaching and scientific research work. Vitality. The establishment of campus network has become the basic construction work of each school, which is directly related to the quality and level of the school's teaching and scientific research work. With the establishment of China's CERNET (Chinese Teaching and Research Demonstration Network) backbone network and the climax of the construction of the national campus network, the campus network has become one of the important indicators to measure the merits of a school.
The network management of multimedia classrooms has become a reality and inevitable.
3. Multimedia classroom management contradictions
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. With the continuous advancement of modern teaching systems in colleges and universities, multimedia classrooms with a projector as the core are becoming more and more popular, and some schools have completely replaced the general chalk teaching with projection teaching, resulting in huge teaching changes. With the deepening and popularization of multimedia classrooms, ordinary classrooms have been transformed into multimedia classrooms. The informatization and modernization of teaching have increased the school's audio-visual equipment. The management of multimedia classrooms has become a new problem faced by administrators of audio-visual centers:
The contradiction between the increase of multimedia classrooms and the lack of audio-visual management personnel is becoming more and more obvious. In order for the equipment to be used normally, the school must increase investment and equip more administrators with professional knowledge. Before the class, the administrator has to hold a bunch of keys and shuttle between the classrooms frequently to help teachers prepare for the environment. After class, they have to check the equipment and turn off the equipment. In the face of relatively concentrated school hours and school hours, in order to make the equipment work properly, the school has to increase investment and equip more administrators with professional knowledge. But the question is how many administrators are reasonable?
The users of the equipment are mostly ordinary teachers. They usually have heavy teaching tasks and do not have too much energy and time. However, there are many traditional multimedia classroom equipment, and the operation is cumbersome, requiring the operator to memorize many operation steps, which is easy to cause teachers to be afraid. If the operation is not proficient, it not only affects the teaching effect, but also may damage the equipment, and the multimedia teaching should not be able to exert its effective performance, so that the investment has no return.
When students use the machine to browse unhealthy websites, encounter difficulties during the learning operation, and malfunction of the software system, these all need the timely help of the teacher. The operation interface and remote takeover of keyboard and mouse are very necessary.
The cable TV system is introduced into the multimedia classroom. However, the projector does not have a corresponding interface, and the central control system does not support it. With the external TV box, the operation is cumbersome, and the unskilled may not find the channel to watch. How can it be compatible with cable TV?
Faced with expensive equipment, security and anti-theft are issues that must be considered. Although there are many related solutions in the market, they are all self-contained, with high investment and difficult maintenance. How can we ensure the safety of system equipment without increasing investment?
The TV speeches of the school leaders, the special reports in the school, and the observation and discussion of excellent subjects all need to face the whole school. How to use the existing network resources to achieve shared live broadcast?
In view of the above contradictions, the SD-2008N series networked centralized control system with remote control / status feedback is a better solution.
4. Advantages of networked multimedia classroom
The network-based centralized control system with remote control status feedback uses advanced Internet technology and multimedia technology to detect the operating status of classroom important equipment, the use rights and control rights of classroom equipment, the remote control of classroom equipment, and the anti-theft of classroom equipment Etc., centralized management through the network, and can be well compatible with the school's existing management system: such as automatic management according to the curriculum, teaching IC card "one card" and so on.
Through the networking of multimedia e-classrooms, equipment resources can be shared, centralized management and maintenance of e-classrooms can be achieved, the management burden of e-learning centers can be reduced, and multimedia online teaching applications can also be realized.
Through a networked low-cost management system, the existing campus network and audio-visual equipment and other resource utilization rates can be used to improve various modern teaching methods.
Accumulate teaching resources through the automatic generation of teaching resources to provide help for teachers' lesson preparation, student learning and teaching evaluation.
Webcasting and on-demand bring a new teaching model, providing a reference for the future comprehensive online teaching model.
5. Network multimedia classroom features
Adopt mature Ethernet network technology without special engineering wiring and special network maintenance
Low power consumption, can work continuously for a long time
Singlechip structure, super stability, no crash
Network management can cross routes and cross network segments
You can select some or all terminals and turn on or off the system at the same time
You can check the working status of each terminal through the network
With projector disconnection alarm function to ensure equipment safety
Can be plug-in equipment (decoder, matrix switcher, infrared alarm, intelligent IC card system, etc.)
Multi-level password protection to ensure network operation safety
Classroom computer remote takeover (screenshot, lock, software installation and maintenance)
Linked with the desktop, open the door and use, close the door and go
6. SD-2008N Network Control Introduction
6.1 Device picture
6.2 Function Introduction
3-way power management (projector, expansion slot, projection screen)
Projector power-off protection
After the projector and TV are turned on, they can automatically enter the working state according to the settings
4 × 2 channel audio and video switching matrix + 3 channel multimedia audio switching (stereo)
3 × 2 channel VGA switching matrix (audio synchronization switching)
3 infrared remote control signals
Full digital sound control (broadcast, microphone, TV, radio frequency)
Programmable serial communication port: one RS-232, one RS-485
Click to enter the booth of Beijing Lixun Times Digital Technology Co., Ltd.
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