Research on Automatic Lighting Control Equipment of Tunnel Entrance

In response to the national energy conservation and emission reduction policy and reducing tunnel operating costs, this paper introduced automatic lighting control equipment research and development on the basis of tunnel traffic safety and comfort. This research and development is aiming for LED lights which having a broad application prospects, combined with the lighting intensity outside the tunnel, traffic and other factors. In this paper, the relationship model of power and illumination of LED light is analyzed, and the High-precision digital current stepless dimming technology is proposed. The test results demonstrate that this device can reduce the manpower and electricity consumption of tunnel illumination to a large extent while ensuring the tunnel traffic safety.