I. System Positioning
The video surveillance system is the core subsystem of the security protection framework, hailed as the "clairvoyance" and "digital sentinel" of the campus. With the goal of "seeing, seeing clearly, understanding, and retaining," it provides 7×24-hour visual security protection for campuses, office buildings, residential communities, and other locations through a closed-loop architecture of front-end collection, network transmission, back-end storage, and platform management. It is a foundational project for smart security, smart communities, and smart campus construction.
II. Equipment Composition and Functions
| Equipment | Core Function | Selection Key Points |
|---|---|---|
| Network Camera | Front-end image collection, the "eyes" of the system | Select models by scenario: bullet camera (fixed area), PTZ camera (360° patrol), dome camera (indoor ceiling mount); supports starlight-level night vision and intelligent AI analysis (face / license plate / line crossing / intrusion detection) |
| NVR Recorder | Video access, encoding storage, and playback, the "brain center" of the system | Select models by channel count (8/16/32/64 channels), supports H.265 high-efficiency encoding, multi-bay expansion |
| Surveillance Hard Drive | 7×24-hour continuous recording storage | Uses surveillance-grade hard drives, supports 7×24 operation and RAID redundancy to ensure data security |
| Switch | Network transmission and power supply, building a dedicated video network | PoE switches are recommended; network cables transmit both data and power simultaneously, simplifying cabling |
| Monitor | Real-time image presentation, building the monitoring center | Supports multi-screen split display, combined with large-screen splicing for centralized management |
| Pole / Bracket | Camera installation carrier, ensuring field of view and safety | Select poles, wall-mount, and ceiling-mount brackets by scenario, with lightning protection and grounding |
| Power Supply / Lightning Protection | Stable power supply and safety protection | Centralized power supply + UPS uninterruptible power supply, lightning protectors protect equipment safety |
III. Core Functions
Real-time Image Viewing—— Supports real-time preview on multiple terminals including computers, mobile phones, and large screens, with smooth images and low latency, allowing administrators to grasp on-site dynamics anytime and anywhere
Recording Storage and Playback—— Supports 7×24-hour continuous recording and scheduled / event recording, with precise retrieval and playback by time and event, providing ironclad evidence for incident tracing and responsibility determination
Visual Security Management—— Provides full-coverage monitoring of entrances and exits, perimeters, and key areas for campuses, office buildings, and residential communities, enabling intrusion warnings, abnormal behavior recognition, and pedestrian and vehicle flow analysis, transforming "post-event tracing" into "pre-event prevention and in-event control"
IV. Solution Advantages (Combined with Yunong Yunzhi Practices)
Relying on weak-current intelligent system integration capabilities, Yunong Yunzhi can provide one-stop services from survey and design, equipment selection, construction and cabling to commissioning and operation and maintenance. It has implemented a full-area intelligent security system in projects such as the Zijun Tianxi Smart Digital Community, supporting linkage with access control, alarm, fire protection, parking, and other subsystems to build a trinity smart security overall solution of "human defense + technical defense + physical defense."