1、 System Overview

With the development of education in our country, the scale of schools continues to expand, students are highly concentrated, and the openness of campuses and the socialization of logistics services are increasing. How to handle the security work and sudden and group incidents in various campuses, reduce campus violence, and provide effective security protection for schools has become a key concern for the public.

Campus security has gradually become popular in various universities, primary and secondary schools. At present, campus security mainly consists of two parts: teaching office area and student learning and living area. Due to differences in school size and student age, there are significant variations in the required security systems for primary, secondary, and tertiary schools. The high openness, diverse personnel, and high mobility of universities in various regions have increased the difficulty of campus security work; Although primary and secondary schools implement closed management, the self-control and self-protection ability of primary and secondary school students are relatively poor, so the required video radiation area for primary and secondary schools is larger. Therefore, the focus of security varies in primary, secondary, and tertiary schools. However, regardless of the differences in their focus, the importance of safety precautions for this protected population is beyond doubt. Therefore, with the introduction of relevant national policies, the construction of "safe campuses" and "digital campuses" has been launched successively.

Kindergarten: As its monitoring targets are protected and vulnerable children, it is more important to carry out security measures against external intrusion. And its extended application is mainly reflected in the remote viewing of kindergarten by parents, including during activities and classes;

Primary and secondary schools: The monitoring targets of primary and secondary schools are protected adolescents in their developmental stage. Safety prevention work is also one of the main purposes of school security, which includes not only external intrusion but also internal campus violence. And its extended application is more reflected in the application of electronic invigilation;

Universities: The majority of students in universities are adults. While external intrusion and internal campus security measures are important, the proportion of extended applications is increasing, with a focus on remote teaching applications.

（1） Requirement analysis

By monitoring and observing the main teaching venues through closed-circuit television, the intuitiveness and objectivity of teaching evaluation can be increased, which can play an important role in comprehensive academic management and has been proven to be an effective way to improve the quality and efficiency of school teaching;

The modernization construction of schools must also take into account their teaching information exchange function. The use of teaching television monitoring systems can achieve campus closed-circuit television teaching or inter school teaching exchange through the Internet network;

Make full use of existing resources and never waste them excessively;

The school's funds are not very abundant, so we pay special attention to utilizing existing resources throughout the campus monitoring process, such as the existing campus network and past analog cameras. We have transformed the video server into a digital networking system suitable for network transmission.

（2） Advantages of the Red Apple Monitoring System:

1. One stop solution proposal.

The company was founded in 1996 and has been committed to product research and development as well as brand building in the field of security. It has a series of products with numerous independent intellectual property rights. From front-end monitoring devices, transmission devices to back-end monitoring center main control devices, from hardware devices to software platforms, Red Apple provides integrated software and hardware products, allowing you to easily build professional monitoring systems of all levels and types.

2. New old compatibility, easy to upgrade and expand.

In professional monitoring systems, the management platform has compatibility with multiple devices. It can be compatible with hard disk recorders, embedded systems, network video products, and more. Convenient for you to flexibly build systems and upgrade old systems, maximizing the protection of user investments.

　　2、 System Design

（1） System composition

1. Campus audio and video linkage system

Audio video linkage is an integrated platform that can achieve broadcasting, background music, and multimedia teaching functions. The key is to closely integrate with the monitoring system to handle police situations and achieve two-way voice intercom. The alarm linkage system is an important component of this project. The front-end camera and alarm are integrated into the control room for unified management, and the audio and video system realizes bidirectional voice scheduling function.

The audio and video system fully integrates the resource platform, combines various functions of computer network classrooms and voice classrooms, adopts a new humanized design, making computer teaching more intuitive, effective, and efficient, and can achieve two-way voice transmission between teachers and students. When encountering an emergency, the 110 alarm platform can be used to quickly handle the situation and eliminate safety hazards in the school.

2. Electronic patrol examination system

Applying modern monitoring systems to invigilation, establishing a digital and networked monitoring system based on campus networks to solve the monitoring difficulties of large monitoring areas and excessive monitoring points, and realizing the monitoring of the entire examination process through both human and technical defense. Only in this way can we better maintain the discipline of the examination room and the rights and interests of candidates.

This video surveillance system uses a large screen as a monitoring platform for the extended application invigilation system. Supervisors can use established rotation strategies to achieve multi screen segmented rotation display, automatically switch between exam room videos on the large screen, and manually switch between live exam room videos through the global hotspot window. When discovering suspicious events while watching live videos, you can switch the recording at any time for easy reference and evidence collection in the future.

3. Campus Public Safety System

Throughout the years, the school has continuously increased investment in civil and physical defense. In terms of technology, it has established a technical prevention and monitoring system, installed monitoring points in key areas and crowded places in each campus, and implemented a prevention and control system that combines civil defense, technical defense, and physical defense. This can enhance safety, reduce daily investment, and minimize public security cases.

（2） System architecture

1. System topology diagram

2. Design Description

(1) For the original self built monitoring resources on campus, a simulated access method is adopted, with lossless high-definition image quality and real-time smooth control.

(2) For newly established monitoring resources, it is recommended to adopt digital access methods and fully utilize the campus broadband network to integrate monitoring resources into the safe campus system.

(3) Multi level monitoring center networking also has analog and digital dual backup networking control.

(4) A dedicated platform software for unified management of all analog and digital devices and signals, dual screen display of electronic maps, and alarm linkage with multi-channel video.

(5) Centralized storage and distributed management of image resources enhance storage stability and reliability, while reducing storage costs and offering cost-effectiveness.

(6) A large screen display system that displays and switches rich graphic and textual information in real-time, suitable for monitoring, commanding, and scheduling in command centers.

3. System features

(1) The transmission method from the front-end of the system to the monitoring center adopts fiber optic transmission, and the image quality has not been digitally compressed. The image quality is clear and the control is smooth.

(2) The digital images transmitted through network cameras and analog cameras+video servers can achieve a maximum resolution of D5:1920X1080 (1080P) due to the use of advanced MPEG4 or H.264 compression algorithms. The combination of analog and digital methods provides strong flexibility while ensuring image quality.

(3) Integrate multiple data access methods, including ADSL lines, E1 lines, DDN lines, fixed IP, various dedicated lines, etc.

(4) The core equipment of the monitoring center is matrix and digital coding equipment, and it also has a powerful and highly integrated comprehensive monitoring platform software that can manage and control matrix equipment and signals, as well as digital coding equipment and signals simultaneously.

(5) The matrix system switches to screen wall monitoring, while digital encoding devices convert traditional analog video signals into digital signals, transmit them through computer networks, and process them through intelligent computer software, forming a monitoring system that combines analog and digital. We have achieved digitization of video/audio, networked systems, multimedia applications, and intelligent management.