As the name suggests, campus monitoring is the use of monitoring equipment to perform all-dimensional, full-HD video stereoscopic management and monitoring of school premises. In addition, you can remotely control the camera and PTZ, set up various alarms and linkages, and perform digital video recording and storage of the monitored content, and edit, retrieve, and playback digital video files.

The key to building a safe campus is to effectively prevent unexpected security incidents through the video surveillance system so as to minimize the damage caused by the accident. In the past, traditional campus monitoring was often based solely on schools as an independent construction subject. The system performance can only be viewed and recorded in a simple manner. Not only can it not prevent emergencies in a timely manner, but even when an incident occurs, it cannot be known or learned in time. The monitoring system can only provide video afterwards, and the quality of the video images of many analog surveillances is also extremely poor, and no effective information can be obtained at all.

I. Overview of the Program In recent years, with the advancement of science and technology and the economic development that have brought about improvements in the overall social standard of living, the teaching methods of the campus have also undergone great changes. The traditional hand-held teaching has gradually withdrawn from the stage and replaced by it. It is quality teaching, outdoor teaching, multimedia teaching and other methods; at the same time, due to the increasingly hidden and cheating behaviors on the campus exams, and increasingly cheating techniques, it is necessary to reduce personnel management in each classroom as an examination room. And ensure that the examination room can effectively inspect candidates during the examination, and can be used as a multimedia classroom at ordinary times. School leaders can evaluate the quality of teaching in each class through the system, and build a multimedia closed-circuit monitoring system to carry out the relevant classrooms in the entire school. Monitoring is imperative. The relevant documents of the State Education Commission have made it clear that the provinces, municipalities, and regions plan to establish a closed-circuit television monitoring system in all major schools in the area. For example, Beijing's first mandatory local standard, "Safety Technology Prevention Standards for Primary and Secondary Schools and Kindergartens" will be formally implemented on April 28, 2008. The compulsory standards stipulate that video surveillance equipment should be installed at the main entrances and exits (gates) of the primary and secondary schools and kindergartens in this Municipality, and video recordings should be conducted 24 hours a day; cameras should be installed in the halls of student dormitories to monitor and ensure the security issues of the schools in order to Abnormal conditions are checked and reviewed in real time to achieve timely processing. The reform costs will be borne by the municipal government, districts and counties and schools.

With the increasing popularity of high-definition surveillance, safe campuses are bound to go to high-definition. Closed-circuit television monitoring system is mainly composed of three parts: the front-end examination room camera equipment, transmission equipment, and monitoring center control display video equipment. School leaders can monitor the teaching situation in each classroom at any time through the front-end camera equipment; when used as a proctor, managers can find abnormal situations in the examination room at any time, and take necessary measures to effectively supervise the cheating in the examination room and ensure the examination field discipline; and, the superior supervisor Leaders can perform remote real-time monitoring of each classroom through permission login on the Internet; the system can implement “Parent Open Day” and remote video teaching on the Internet. By allowing parents to sit at home, they can browse their children’s learning and the entire process of teaching by the teacher. This will increase parents’ understanding of students’ learning and life and increase the transparency of school work.

Second, the system program principle 1, the advanced nature and applicability of the system's technical performance and quality indicators should reach the international advanced level; the same time, the system's installation and commissioning, software programming and operational use should be simple, easy to grasp, suitable for China's national conditions and The characteristics of this project meet the requirements of the development of the times. At the same time, the system is a system that is used for various management levels. Its function configuration can provide users with comfort, safety, convenience, and speed as the criteria, and its operation should be easy to learn.

2. Economicality and practicability Taking full account of actual needs of users and the development trend of information technology, according to the user's on-site environment, the design selects functions and system configurations that are suitable for the site conditions and meets the user's requirements, and achieves the best through a rigorous and organic combination. The ratio of performance to cost, in order to save project investment, while ensuring the implementation of system functions, economical and practical.

Third, the system functions and characteristics of the system must be advanced, practical, mature, reliable, but also to do the system open and scalable, taking into account the rational investment and the best efficiency. Closed-circuit television monitoring provides centralized monitoring, control and management of on-site preparations to enable safe, reliable, and efficient operation of these devices, maximizing the role of intelligent management, creating safety, health, comfort and comfort, and improving work efficiency. Environment, save energy, and reduce maintenance personnel. According to the environmental needs of the project, and to meet the functional requirements, CCTV monitoring of the project is established.

1. The system has the following functions:

CCTV's main task is to conduct macro-monitoring and control of the dynamic status of the important parts of the building, such as people flow, in order to conduct real-time forensics and review of various abnormal conditions and achieve timely processing.

a. Perform timing, fixed point switching and programming on the video signal.

2. When viewing and recording images, characters should be distinguished and time (year, month, day) should be displayed.

3, to receive the elevator floor superimposed signal.

4, to achieve synchronous switching: power synchronization or external synchronization.

5. Receive signals from subsystems in the security protection system and implement control linkage or system integration as required.

6, internal and external communication links.

7. When the security surveillance television system is linked with the security alarm system, it should be able to automatically switch, display and record the image signal and alarm time of the alarm location.

8. The power supply control camera shall be powered by a dedicated line from the security control room and shall be operated and disconnected by the security control room. It is also possible to solve the problem when the unified power supply to the camera far away from the security control room is difficult. If the system uses the power synchronization method, it must be a reliable power supply with the same phase as the security control room.

2, the system has the following characteristics:

H.264 Compression Technology The H.264 video coding standard is a low-rate image compression standard designed for medium-high quality motion picture compression. H.264 adopts the common coding method in motion video coding, and divides the coding process into intra-frame coding and inter-frame coding. The eigenframes are transformed and quantized with improved DCT, and 1/2-pixel motion vector predictive compensation techniques are used between frames to make the motion compensation more accurate. After quantization, the modified variable length coding table (VLC) quantized data is used for entropy coding. , get the final coding coefficient.

The H.264 standard has a high compression ratio. In the full real-time mode of the CIF format, the occupied bandwidth of a single channel is generally about several hundred. The specific occupied bandwidth varies depending on the amount of motion of the picture. The disadvantage is that the picture quality is relatively poor, and the occupied bandwidth greatly varies with the complexity of the picture motion.

In short, this closed-circuit television monitoring is an environment space that makes this project highly automated, efficient, comfortable, convenient, and highly safe.

3, remote monitoring:

You can travel from home or abroad; no matter where you are, as long as you can connect to INTENET, you can monitor your plant, office, etc. in real time. Using the latest video stream H.265 technology, you can monitor 24 everywhere.