Method for adjusting brightness of tunnel lamp

Abstract

The invention discloses a method for adjusting the brightness of a tunnel lamp. The tunnel lamp comprises a lamp base and a lamp body, wherein the lamp base is fixed to the wall close to a tunnel entrance, and the lamp body is arranged on the lamp base and connected with electric supply. The method comprises the steps that an illuminance sensor and a master controller are arranged; the lamp body is provided with n sets of LED lamps of different colors, and n is equal to or larger than 2; the illuminance sensor is arranged at the tunnel entrance and used for sensing illuminance data outside a tunnel and transmitting the illuminance data to the master controller; and the master controller adjusts the brightness value of each set of LED lamps according to the illuminance data, and accordingly all the LED lamps can obtain the needed illuminance after color mixing is completed. By the adoption of the method, the brightness of the tunnel lamp can be adjusted automatically according to the brightness of light rays outside the tunnel, a driver can rapidly adapt to the change of the brightness when driving into or out of the tunnel, and the occurrence rate of traffic accidents is decreased.

Description

Technical field [0001] The invention belongs to the field of lighting, and particularly relates to a method for adjusting the brightness of a tunnel lamp. Background technique [0002] Tunnel lights are used to provide lighting in urban tunnels. Tunnel lights usually have a fixed illuminance when lighting. When the brightness difference between the inside and outside of the tunnel is large, it is difficult for the driver's eyes to be instantaneous when going from the tunnel to the outside or entering the tunnel from the outside. Adapting to this poor brightness can easily cause traffic accidents. [0003] Chinese Patent Application No. 201020216846.6 provides an adjustable-brightness tunnel light system, which includes two sets of adjustable-brightness tunnel lights for illumination at the entrance and exit of the tunnel, and also includes an entrance and exit for collecting light intensity at the entrance and exit The illuminance measurement system, the central control unit conne...

AI Technical Summary

Problems solved by technology

[0002] Tunnel lights are used to provide lighting in urban tunnels. Tunnel lights usually have a fixed illuminance when lighting. In this way, when the brightness difference between the inside and outside of the tunnel is large, it is difficult for the driver's eyes to see instantly when he goes from the tunnel to the outside or enters the tunnel from the outside. Adapting to this poor brightness can easily lead to traffic accidents