The necessity of system
With the continuous development of modern education and the requirements of quality education, open and interactive multimedia video teaching has been gradually applied to teaching practice. The establishment of digital campus TV station can promote the cultivation of students' independent exploration and innovative learning ability, broaden students' horizons and establish a video network teaching platform for teacher-student interaction. In addition, the campus TV station can let the school set its own characteristics, such as recording and publicizing the major events of the school, and inviting outstanding students from all departments of the school to exchange their studies for students and teachers to watch and learn together.
1, system equipment and structure requirements
Campus TV station is an important digital, networked and intelligent project, which mainly serves students' training, editing, live broadcast and storage of excellent courses. In network design, the operation should be intuitive and simple, with the characteristics of fast and convenient course programming. We should ensure that the system has advanced storage technology and high cost performance. To make the whole system run economically, efficiently and reliably, the whole system should have good, simple and low-cost upgrade and expansion performance.
2. Business requirements
The system design should not only meet the needs of practical teaching in the school, but also meet the needs of recording, editing, broadcasting, learning guidance, recording and live broadcast of excellent courses in the whole school.
scheme design
1, design target
The construction goal of campus TV station project is to cooperate with the development of school work, adhere to the guiding ideology of correct public opinion orientation, fully mobilize potential, give play to personal specialties, cultivate innovative consciousness and practical ability, and strive to become an art stage reflecting the colorful campus cultural life of the school and a positive campus media reflecting the school-running characteristics. In the process of program production, it is tape-free, efficient and convenient.
(1) Rationality:
In this era of quality education, the quality of school education will be closely related to the number of self-exercise opportunities for students on campus. School TV stations will bring many exercise opportunities for students, including editing, planning, organizing, hosting, interviewing, shooting, making and designing, which will greatly enhance students' comprehensive ability and have a certain impact on their future.
(2) Intangible value:
Promote school management and help schools manage students better; Campus TV station will become a bridge for students, teachers and leaders to communicate and promote the harmonious development of campus; Campus TV station will mainly publicize campus news, culture and students' life, and at the same time help campus organizations to do a good job of publicity, so that students can learn more about the school, participate in school activities and organizations, and enrich campus life; The columns of campus TV stations will play an educational role in some aspects; You can publicize the content of student employment guidance, so that students can absorb more knowledge.
2. Design principles
In order to achieve the expected goal, the design plan plans to connect the campus network, the internal cable TV network and the classroom Internet, so that the live broadcast of the teaching process in each classroom, the real-time programs of each educational channel, the programs recorded and saved on the internal video server and the audio-visual materials played by the campus TV station can be directly watched on the terminal computers of each office or classroom, and relevant programs can be broadcast live online if necessary. In order to realize the efficient transmission of video teaching resources and provide a more perfect information network system for teachers' learning.
Establish the curriculum database of outstanding and backbone teachers in the school, complete the recording of high-quality curriculum resources in the school, as well as the recording of national and provincial excellent courses. Realize the live broadcast of classroom teaching. Live broadcast of teaching or experimental activities and courses to the whole school through the network. It is more convenient, accurate and objective for the Academic Affairs Office to conduct teaching evaluation and appraisal through network management and monitoring.
Build a network platform for mutual observation and reference, so as to realize the sharing of teaching resources. Establish an electronic reading room to realize the best active learning environment for students' autonomous learning and fully enjoy the resources of famous teachers.
Live recording of conferences and academic reports, realizing synchronous live broadcast of local area network and campus network, and burning CDs immediately after the conference. It is convenient for schools to keep files of important courses and facilitate information exchange between brother schools. Combined with the above design principles, the following points should be considered when designing the system structure:
2. 1 advanced
The tapeless design is adopted from the recording, live broadcast and storage of live programs to the collection, uploading, editing and live broadcast of later programs, which has good timeliness and avoids the time waste caused by multiple copies in the process of uploading, making and downloading. The use of full HD equipment conforms to the advanced equipment in three to five years, and meets the national high standards of triple play, full HD and full interface.
2.2 compatibility
From the core camera equipment, to the field pilot switching system, and then to the later nonlinear courseware production system, full-format HD/SD video and audio materials can be seamlessly compatible.
2.3 Scalability
As an important part of the system, the video switching system fully considers the diversity of school shooting equipment, and at the same time, considering that the nonlinear courseware production system is about to undertake more program production and storage capabilities, and strives to meet the needs of large storage capacity and high bandwidth without changing the existing equipment. We provide a special external disk array storage system to protect the storage and use of materials.
2.4 security
The reliability and security of the system is the key of the system. In terms of system construction hardware, concurrency technology and corresponding storage technology should be adopted. The non-linear courseware making system can collect real-time materials for editing, and the hard disk video recorder can be stored as materials for later re-editing.
I hope it helps you.