4S Integrates AI Video Fire & Smoke Detection SystemProviding Real-Time Alerts to Enhance Construction Safety

We are actively supporting the Hong Kong Government’s initiative to promote the “Smart Site Safety System” (4S) across the construction industry. Among its core functions, AI-powered video fire and smoke detection uses existing CCTV cameras to analyse footage in real time, enabling rapid identification of flames and smoke at the earliest stage of a fire incident.

**01 Technology Application:

AI Video Analytics Revolutionising Fire Detection**

The AI video fire and smoke detection system utilises existing site surveillance cameras, combined with advanced artificial intelligence algorithms, to instantly identify flames and smoke—significantly enhancing early fire warning capabilities.

Compared with traditional smoke detectors, AI systems provide faster response times and wider coverage.

One AI system currently used in Hong Kong can analyse a single video frame in just 0.016 seconds, faster than the blink of an eye.

Beyond fire and smoke, the system can monitor multiple construction safety risks simultaneously.

**02 Implementation Benefits:

Accurate and Efficient Safety Management**

The introduction of AI video fire and smoke detection brings substantial improvements to construction site safety management.

In real-world deployment, these AI algorithms achieve an accuracy rate of up to 95%.

The system can detect fire risks before smoke accumulates to levels that trigger traditional alarms, gaining valuable time for evacuation and emergency response.

When abnormalities are detected, the system immediately sends alerts via a designated mobile application, prompting relevant teams to take swift action—forming a complete safety management loop.

With the joint efforts of the Hong Kong Government and the industry, smart construction site systems are rapidly being adopted across worksites citywide. In the future, AI-enhanced safety systems will not only protect construction sites but can also be extended to remote forest fire monitoring, high-rise firefighting support, and other scenarios—further expanding the boundaries of public safety monitoring.

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For enquiries, please contact us:
Email: hello@bigfire.hk

Phone: 2180 2595