With the continuous development of modern information technology, the school's original teaching and processing equipment is now not fully satisfied with the needs of the school. Unsatisfactory handling, poor understanding of safety and preparedness, poor self-protection ability of students, increased mobility of foreign personnel, less safety personnel, large planning inspection, unpredictable early warning mechanism for accidents, unresolved duties cannot be defined, etc. brought serious problems.

The top school in a district of Hangzhou is a first-grade school in Zhejiang Province. It is the only provincial-level middle school in the district. Because the original examination room in the middle school installed analog video surveillance, after years of operation, the video picture is blurred and the failure rate is high. Can not be satisfied with the needs of today's video skills and the regulations of the Ministry of Education. The middle school urgently needs to build a new high-definition network video surveillance system for school security construction and electronic network video surveillance for examination room.

Project needs

1, high-definition surveillance needs

With the development of shopping malls, more and more high-definition surveillance has participated in the construction of safety schools. Most of the new construction projects, or expansion projects, will deploy high-definition cameras at key monitoring points, even in some economically prosperous areas, some new projects have now appeared in the full HD monitoring system. Because the school network is a LAN/campus network with relatively sufficient bandwidth and relatively convenient expansion, it has significant advantages over metropolitan area networks and wide area networks with severe bandwidth. Therefore, school surveillance is more suitable to select high-definition surveillance systems.

Compared with SD, 720P HD and 1080P Full HD are different in nature, which is able to supply higher unit pixel DPI. Therefore, HD cameras can provide clearer images and father sight distance than standard-definition cameras on the premise of using the same forcal length and lens.

2, seamless monitoring needs

With the development of the economy, the increasingly active thinking of students, the need to effectively control and reduce the crime rate of schools make the need for school seamless monitoring more practical and more urgent.

Seamless monitoring, or no blind zone monitoring, especially for electronic test examination monitoring, the cameras in the classroom need to have a complete view of the entire classroom, saving camera capital and achieving a very full effect; otherwise, seamless monitoring It also refers to the active object entering the arming area. Once it is separated from the monitoring horizon of a monitoring point, it will immediately enter the monitoring horizon of another monitoring point, which is the ambition of video surveillance. The school's cover area is relatively fixed, the perimeter is clear, and the cost of seamless monitoring of school monitoring is lower and the possibility is higher.

In addition, seamless monitoring is now required for higher-end panoramic surveillance. The school's venues are often empty squares and playgrounds. The space span is wide, and it is difficult to cover up. The school often has serious activities and needs real-time security control. Therefore, panoramic camera monitoring, "multiple lenses + more sensor", or "N gun camera + one dome camera" is gradually being used differently to provide a panoramic monitoring solution for the school square and playground.

3, Storage needs

In the early construction of safety schools, DVR carried forward important results, but with the development of technology, the use of expansion, the deployment of DVR is now increasingly unable to meet the needs of today's safety school construction. Therefore, following the development of skills and the decline of quotations, the use of professional storage devices for collection and storage has become the general trend in the construction of security schools.

4, system function needs

The system should fully consider the optimal selection of detailed use needs and project construction investment, install high-definition network cameras and pickups in the school classroom, carry out audio and video transmission, meet the needs of the national teaching test network inspection system, and be compatible with the original social security network video surveillance.

5, system security needs

Dissemination of security: monitoring the intermediate database to store all capital data of the school. When the school user wants to visit the data of the front-end camera, the data can only be queried by visiting the server database in the middle of the monitoring, ensuring that the data in the middle of the monitoring can only be visited by authorized users at the same level.

Page 2: System Planning Ideas

Security of the visit: It means that the security level of the capital data should be at the level of the database. In order to ensure the safety of the capital data in the database, it is necessary to prevent the user from bypassing the interface's permission constraints and directly operate the data.

System plan

1, System Planning Ideas

For the construction of the school examination room video surveillance system, the service target is all users of the video surveillance system of the school examination room, including the teaching bureau, school leaders, school security manager, school video surveillance system administrator, school video surveillance system monitor (Security guards) and other staff.

The construction of the video surveillance system of the school examination room is built in the classroom of the comprehensive building, in the classroom of the north teaching building, in the classroom of the south teaching building, in the security room and other local equipment monitoring points, to build a comprehensive set of cover, skill leadership, clear picture, sound, the safe and controllable examination room video surveillance system can upload video signals to the superior inspection video system, so that the fixed-point examination room and the Guangzhou, Guangdong Province examination monitoring command intermediate and the teaching department exam interconnection, intercommunication, the end of the country, province, city. The school has multi-level online inspection and command, and is compatible with the social security network video surveillance system. It provides security assurance in teaching and teaching services and carries forward important effects.

2. Construction guidelines

The secondary school network video surveillance system project plan, the construction guidelines are as follows:

Complete a set of safe and reliable skills, training plans, network access plans, and operation and maintenance plans for the entire network video surveillance system;

The video surveillance system of the school examination room should be interconnected with the higher-level teaching examination inspection channel system, and compatible with the social security network video surveillance system, and complete outstanding scalability and compatibility;

In the middle of the school video surveillance, through the video surveillance private network, clear, real-time viewing, listening to audio and video in the school;

In the middle of the school video surveillance, the HD network cameras in the school can be collected and stored in real time, and the video can be played back in real time. The storage is continuous for 24 hours, the storage time is 30 days, and the storage pattern is 720P.

Through the streaming media forwarding server, it is possible to satisfy a plurality of users to visit the video picture together.

3. Monitoring system structure

The system uses an integrated network architecture to organically combine various video surveillance devices through the network, making it a highly integrated network video surveillance system channel. The system integrates digital video storage, disposal, real-time inspection of video pictures, network processing, user processing, transaction processing, long-distance protection, security mechanisms, etc., to learn and select various leading skills and concepts in the industry today, in digital video compressed algorithms, data stream multi-threading, modular architecture, data storage and other skills are the leading level of today's security integrated systems.

Page 3: System functions and features

System functions and features

This system greatly improves the supervision ability of the school examination room monitoring system, and strictly follows the <National Teaching Examination Online Inspection System Video Specification Skills Specification> plan, establishes a new school fixed-point examination room electronic monitoring system, as the front-end monitoring capital, and provides services for the upper examination. The real-time network monitoring and inspection of the test site is completed to ensure the security of the information and system, to ensure the normal and smooth progress of various examinations, and to be compatible with the original social security network video surveillance system.

1) Full digital high-definition system: The new system selects the system architecture of all-digital high-definition network video surveillance, the video signal display system and the video storage system are separated; the transmission, control and storage are also digital architecture, and the video on demand, parallel storage, and visit are completed. , video search, with outstanding data storage retrieval, network long-distance monitoring and other superior functions.

2) Collection and storage: Select the equipment that supports IP-SAN for storage, reduce the pressure of storage bandwidth, complete the collection and management of the intermediate equipment room, improve the processing power, and use the distracted HD system layout to bring the storage and load of the whole system.

3) All-round seamless monitoring: The front-end equipment is equipped with high-definition network cameras to monitor the monitoring areas for 24 hours according to the on-site conditions. No matter whether it is night or bad weather in the daytime, the front-end scene pictures can be clearly observed in the middle of the monitoring. The high-definition network camera can seamlessly appear in the classroom panorama, which is conducive to electronic examination room monitoring.

4) Picture uploading and scheduling function: the end is interconnected with the monitoring and monitoring system of the higher-level teaching bureau; the user can call/switch the picture showing any monitoring point on the intermediate monitoring console of the network monitoring.

5) Compatibility and scalability: In addition to satisfactorily thinking about the needs of the current construction, the entire system reaches higher equipment in terms of overall system redundancy.

Conclusion

At that time, the teaching informationization characterized by digital schools was carried out rapidly, and the video surveillance system gradually completed the digitization of the whole network. It was convenient to complete the collection and supervision, complete the school informationization and consistent identity authentication and authorization, and facilitate the school leadership and defense to grasp the overall situation. Conduct on-site command in the middle of the sensitive monitoring level, intuitively know the security dynamics of each monitoring area, and use the video surveillance system to improve the level of school security.

Because the monitoring points of the video surveillance system cover various classrooms, laboratories, public places, etc., the monitoring system can not only be used for security purposes by the defending part, but also can be used for teaching intent by the teaching part, such as electronic examination room, long distance teaching, long distance experimental demonstrations and more.

With the expansion of school planning and the continuous establishment of multiple campuses, the need for cross-domain networking and consistent use of multi-campus surveillance systems will increase, and the use of electronic surveillance and other transaction functions will deepen.