1.1. Engineering Overview
1.1.1 The current application of audio-visual products
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 colleges and universities, multimedia classrooms with a projector as the core are becoming more and more popular. The school has 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. The school's electronic classrooms are currently managed by the teachers of the school's audio-visual center. The increase and popularity of the school's multimedia classrooms have brought new troubles to the management of teachers. The production of multimedia courseware, the use of a multimedia central controller, the use of a multimedia projector, and so on make the teacher face various confusions. The increase in multimedia classrooms keeps the management staff of the audio-visual center constantly busy in the classroom, helping to prepare the classroom environment for teachers, solving problems in use by teachers, closing multimedia classrooms after class, maintaining the central control system, and requiring students to take classes Courseware, etc. Sometimes the sharing of classroom resources, the sharing of teaching between classrooms, or the monitoring of teachers ’classroom situations are required, and the existing multimedia classrooms cannot play a role. The new problems in the maintenance and management of multimedia classrooms make the audio-visual center put forward higher requirements for the management of multimedia classroom systems.
The comprehensive management of classroom equipment has been mentioned on the agenda. The network-based centralized control system with remote control status feedback adopts advanced Internet technology and multimedia technology to detect the operating status of classroom important equipment, the use rights and control rights of classroom equipment , Remote control of classroom equipment, anti-theft of classroom equipment, etc., centralized management through the network, combined with advanced management concepts: such as automatic management according to the curriculum, teaching IC card "one card", etc., to jointly build a new 21st century teaching management mode.
1.1.2 Current device management mode
With the expansion of the scale of major universities, the gradual change and progress of teaching methods, the increasing number of multimedia classrooms, the pressure on the management of multimedia classrooms is increasing. This pressure is mainly reflected in professional audio-visual personnel. The number of configurations and the technical requirements for these personnel. In the past, the number of multimedia classrooms accounted for a small proportion of the total number of school classrooms. There are more than ten or twenty multimedia classrooms in total. One person manages seven or eight, and two or three people are enough. Now there are dozens of hundreds of them, and the audio-visual personnel are responsible for turning on the equipment in each classroom before class and turning off the equipment in time after class. Continue to follow the old method of management, and the audio-visual staff can't help but break their legs.
CREATOR campus network-based multimedia classroom remote / remote centralized control management solution solves the problem for you. The program uses the NET-1000 network central control system on the basis of the open multimedia classroom construction program, and the ET-1000 e-classroom network management system adopts the network control mode, using campus network resources to achieve remote control of the multimedia classroom, and can achieve The mutual transmission of various signals between different classrooms makes the management of multimedia classrooms simpler and faster, and classroom resources can be more fully utilized. The network control NET-1000 with industrial-grade microprocessor and network chip completes all functions of the classroom management. The system has the characteristics of no wiring, high bandwidth, convenient installation and maintenance and strong versatility.
1.1.3 Demand analysis of equipment management
The establishment of multimedia network classrooms is based on the principles of practicality, economy and advancedness. The operation of teachers should be simple and easy to use. The system must be stable and mature; the construction of the scheme should have a better performance-price ratio, and the technology should be scalable and advanced under the premise of reasonable prices. The construction of the network multimedia classroom should have the following functions:
Multimedia classroom remote start / shutdown: Through the main control room, the multimedia classroom can be remotely started, so that the equipment is ready for the teacher before class; the multimedia classroom can be shut down remotely, even if the teacher forgets to operate after class Closed quickly and normally, eliminating the tediousness of special personnel and a large amount of keys;
Multimedia computer remote power on / off: remote computer power on and remote soft power off, and power off after 5 minutes delay;
Remote reset of the multimedia classroom controller: Through the general control room, some problems for teachers can be solved remotely, such as the remote reset centralized control system, etc .;
Remote monitoring and control of multimedia classroom computers: you can see the screen of each classroom computer. When the teacher encounters problems using the computer, the administrator of the general control room can perform remote login control (mouse / keyboard) to help solve it.
Automatic monitoring of equipment status: The sensors can be used to monitor the power supply of each classroom control, the switch of the computer, the switch status of the projection, and transmit it to the general control room through the network, so that the status of each classroom is clear.
Electronic hands-up and two-way intercom: The hands-up signal can be transmitted through the computer network, and the teacher can request help from the administrator of the general control room. Through the computer network, the teacher can talk to the administrator of the general control room.
Remote device control: The classroom control system can be controlled remotely to realize all operation functions such as projection switch, screen lifting, and device power supply.
Timetable function: the management system can automatically control the classroom according to the timetable, for example: according to the timetable, there is a class in the classroom, the management system can automatically open the central control of the classroom 5 minutes before the class, so that the classroom equipment is in a ready state, if the next section There is no class, the management system can turn off the central control and the projector after 5 minutes of the next class.
Batch processing function: The management system can control the selected classrooms uniformly. For example, select several classrooms, and then execute "System On" to open the central control and equipment of the selected classroom, and execute "System Off" to close Select the central control and equipment of the classroom, thus eliminating the tedious opening and closing one by one.
Cross-segment control: the computer in the main control room is connected to the Internet to enable teachers to control the classroom at home through the Internet. The management system software provides identity authentication and three-level permission management. As long as you have permissions to connect to the Internet in parallel, you can achieve anytime, anywhere Monitoring.
IC card operation: The classroom end uses the IC card to realize the functions of "plug and play" and "pull and go". Teachers holding the IC card can authorize the lectures according to the curriculum through the general control room, and can teach in any network classroom. .
Broadcast function: The software can realize the broadcast function of classroom computer screen broadcast and video MPEG4 mode.
Anti-theft function: The system distributes anti-theft to the use door and maintenance door of the control platform, and infrared-type anti-theft to the projector. Anti-theft information is sent to the general control room through the network, and sound and light alarms are performed in real time.
1.2 Teaching application College users also hope that they can have a certain degree of advancement in the structure design and function of the teaching management system. We tailor-made the system for the school based on the needs of the school based on the network monitoring system of our classroom. The construction and use of the system will greatly reduce the management workload of teachers in the classroom, and can monitor the usage of the classroom in real time. The system adopts a modular design to minimize power consumption to meet the needs of network control needs for long-term operation of the control system. The modular design enables convenient networking. The remote hardware reset pin is defined inside the network interface to support remote network hardware Reset the NET-1000 central control, the streamlined design allows teachers to use it without any professional training.
The common classrooms of the school are implemented by NET-1000 network central control.
The components of the system are:
1. Central network multimedia controller. The central controller plays the role of inheritance
On the one hand, it is the control center of the electric classroom, which completes the intelligent control of the electric classroom; on the other hand, it is the component unit of the entire system, which is a bridge for remote control. The central control system uses the NET-1000 network central control produced by CREATOR.
2. Master control software. Realize the entire remote monitoring function. The software can be run on any terminal to achieve remote monitoring and control of all classrooms.
3. Anti-theft console. The console is used for placing the main control equipment and operating equipment in the main control room and various multimedia classrooms. In order to achieve the convenience of operation and the safety of use, the steel platform with a thickness of 1.2mm or more, the spot welding process of sheet metal molds, and the electronic platform of the HJ-1500DJ audio-visual platform manufactured by the complete process are used. The podium is safe and anti-theft, beautiful in appearance, easy to operate, reasonable in structure, equipped with electronic lock to support remote opening, IC card opening and other functions.
1.3 Networking of equipment management The network management system of the electronic classroom comprehensively transmits voice and image signals including classrooms, offices, conference rooms, etc., and centralizes and remotely controls computer equipment, audio-visual equipment, studio equipment, monitoring equipment, and environmental equipment. The system uses advanced video processing technology and network control technology, using the existing campus network to form a multimedia classroom as a whole, centralized maintenance, monitoring and management. The system used in a modern campus must be advanced. Strive for high standards, and have strong adaptability, scalability, reliability and long-term benefits to meet future requirements. According to the needs of modern teaching development
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