Sansi LED: Sustainable LED Lighting and Integrated LED Display

Traditional tunnel lighting relies on fixed brightness adjustment or manual inspections, resulting in issues such as delayed response and high energy consumption. The new generation of smart lighting systems leverages Internet of Things (IoT) technology to interconnect luminaires, sensors, and control centers, achieving three core functional breakthroughs:

- Real-time Monitoring: Light sensors collect brightness data inside and outside the tunnel.

- Dynamic Adjustment: Automatically matches lighting schemes based on traffic volume and weather conditions.

- Fault Warning: The system can identify and alert abnormalities in luminaires and locate problem areas.

Sansi, based on the characteristics of Dalian Bay Subsea Tunnel, such as its terrain, tunnel width, and ground and wall materials, has formulated an appropriate lighting layout scheme through precise simulation calculations. Meanwhile, enhanced lighting has been set up at the entrance, transition, and exit sections to adapt to the visual senses of drivers. Corresponding emergency lighting has been installed throughout the tunnel to ensure traffic safety.

The innovative solution of the smart underwater tunnel lighting system not only adapts to changes in light perception throughout the four seasons but also adjusts the brightness of the lights inside the Dalian Bay Subsea Tunnel in a timely manner according to different weather conditions such as sunny, cloudy, rainy, snowy, and foggy days, as well as different light intensities such as morning, evening, daytime, and nighttime.

System Architecture for Comprehensive Collaboration Across the Region

Modern smart tunnel lighting adopts a "cloud-edge-terminal" three-tier architecture:

- Cloud Platform: The provincial transportation command center can simultaneously monitor the lighting status of tunnels within the province.

- Edge Computing: Local servers deployed at tunnel entrances achieve millisecond-level emergency responses.

- Terminal Devices: Each LED luminaire is equipped with an independent control module supporting brightness adjustment.

This distributed architecture ensures both large-scale centralized management and control and rapid response capabilities in emergency situations. The system automatically enhances lighting and triggers warning signboards, effectively preventing traffic accidents.

Experts from the China Intelligent Transportation Association point out that the next three years will be a critical period for the smart transformation of tunnel lighting, with a need to focus on breaking through technical difficulties such as compatibility between heterogeneous systems and network security protection, to truly achieve modern operational goals of "visibility, controllability, and manageability."