Video Surveillance and Security System

Full-site visibility with AI early warning — a reliable security guard for the whole venue.

A video surveillance and security system is a comprehensive security monitoring system built on cameras, networks and AI analysis. With over 10 years of experience in intelligent system integration, Sichuan DCH Technology (DCH) integrates capabilities such as HD/IP cameras, NVR storage, perimeter intrusion detection, AI behavior analysis and integrated alarm linkage, delivering full-lifecycle services from solution design, equipment installation and commissioning to platform operation, keeping every corner of the site "seen, recorded and guarded."

1. Background and Value

Security management requires timely perception of on-site conditions and evidence at key moments. Traditional monitoring suffers from passive viewing, low alarm intelligence, and scattered device management, making it hard to respond to security incidents promptly.

For owners and security management departments, the video surveillance system delivers the following value:

• Full visibility: HD full-site coverage with no blind spots;
• Intelligent warning: AI analysis enables early warning and fast response;
• Reliable evidence: Storage and retrieval ensure evidence integrity;
• Efficient management: Unified device management reduces O&M workload.

2. Overall Architecture: A Three-Layer Capture–Transmission–Platform Security System

DCH breaks the system into a "capture–transmission–platform" three-layer architecture:

3. Core Systems and Key Points

3.1 HD/IP Camera Coverage

HD/IP cameras cover entrances, circulation routes, public areas and perimeters; night vision, wide dynamic range and other features are configured by environment to ensure clear images around the clock.

3.2 NVR Storage and Retrieval

NVR storage supports scheduled/alarm recording with configurable retention; centralized storage and fast retrieval provide complete, reliable evidence.

3.3 AI Behavior Analysis and Perimeter Intrusion

AI behavior analysis recognizes abnormal behaviors such as perimeter intrusion, lingering, and crowd gathering, issuing real-time alarms; perimeter intrusion detection accurately distinguishes human from non-human intrusions to reduce false alarms.

3.4 Integrated Alarm Linkage

Surveillance links with access control, alarms and fire systems: alarm events trigger linked actions such as light/sound warnings and video pop-up for a complete security closed loop.

4. Typical Application Scenarios

• Parks and buildings: Full-site security monitoring for offices, factories and campuses;
• Commercial venues: Coverage of entrances, exits and public areas for safety and evidence;
• Hospitals and schools: Key area monitoring with campus/parking protection;
• Public facilities: Security monitoring of stations, squares and public spaces.

5. Compliance and Standards

The video surveillance system must align with national standards; DCH implements them from design through acceptance:

• GB 50348 Technical Code for Engineering of Security and Protection System;
• GB 50395 Video Surveillance Engineering technical code (as applicable);
• Video surveillance and personal information compliance requirements;
• Requirements for network and video data security.

6. Why Choose DCH

As a local service provider with over 10 years of expertise in intelligent system integration, DCH delivers differentiated capabilities in security projects:

1. Full-stack integration: Cameras, networks, storage, AI and linkage are designed from one source, avoiding multi-vendor disputes;
2. Full-lifecycle service: From solution design, equipment installation and commissioning to platform operation;
3. Compliance assurance: Familiar with security engineering standards and privacy requirements;
4. Local response: Rapid on-site support across Sichuan and Southwest China;
5. Proven cases: Serving many parks, enterprises and public institutions with reusable delivery experience.

Together we achieve greatness and pool excellence. Guided by the philosophy of "innovation, integrity, professionalism and collaboration," DCH builds every surveillance system into a site "guardian" that sees all, records reliably and alerts intelligently.

7. Construction Essentials and Common Considerations

• Full coverage: Reasonable camera positions cover entrances, circulation routes and perimeters with no blind spots;
• Storage planning: Sizing by retention period and frame rate;
• AI accuracy: Intrusion and behavior thresholds tuned to reduce false and missed alarms;
• Linkage integration: Integration with access control, alarms and fire systems for a closed loop;
• Network security: Network isolation, encryption and access control for video data;
• O&M assurance: Unified device management with rapid fault response.

8. FAQ

Q1: How long is video retained?
Retention is configurable per regulatory and operational needs, commonly 30 days or more; storage capacity can be extended as required.

Q2: How is privacy compliance ensured?
Camera coverage and video access are planned per privacy regulations; sensitive areas are restricted or excluded, and access is controlled and audited.

Q3: Can existing cameras be integrated?
Yes. ONVIF and other standard protocols support integrating existing third-party cameras into a unified platform, protecting existing investment.

Q4: What can AI analysis detect?
It detects perimeter intrusion, lingering, crowd gathering, area entry, and more, issuing real-time alerts for early security response.

For detailed surveillance solution design tailored to a specific site, please contact the DCH intelligent system integration team for free preliminary consulting and solution design.