A dimming system and method for the extension section outside the highway tunnel entrance

Abstract

The invention discloses a light adjusting system and method for an extending section outside a highway tunnel portal. A sunshade comprises a supporting frame and an outer cover plate fixed to the supporting frame. The sunshade is divided into a plurality of sections in the road direction. Shading piece supports are arranged in the sections correspondingly and fixed to the inner side face of the outer cover plate; a plurality of shading pieces are movably connected in the shading piece supports in sequence in the road direction; driving devices used for driving the shading pieces to rotate are fixed to the shading piece supports; a first illumination sensor used for detecting the illumination intensity outside the outer cover plate is arranged on the outer wall of the outer cover plate; a second illumination sensor used for detecting the illumination intensity of the tunnel portal is arranged in the tunnel portal; and third illumination sensors used for detecting the illumination intensity in the sections are arranged in the sections correspondingly. According to the system and method, transition between the high illumination intensity and the low illumination intensity in the extending section of a tunnel can be achieved in a self-adaptive mode, light adjusting flexibility is high, building and maintenance costs are low, and construction difficulty is low.

Description

technical field [0001] The invention belongs to the technical field of tunnel lighting, and relates to a dimming system and method for an extension section outside a highway tunnel mouth. Background technique [0002] China has become the country with the largest number of road tunnels, the longest mileage and the fastest development speed in the world. While road tunnels provide people with fast and convenient travel, their lighting, especially the lighting of entrances and exits, has an increasingly important impact on driving safety. focus of attention. Since the road tunnel is a semi-enclosed space, its lighting is very different from general road lighting. When the driver enters and exits the tunnel, he will be subjected to a huge contrast in the brightness of the light inside and outside the tunnel, resulting in a visual "white hole effect" or "black hole effect". The visual discomfort caused by the "white hole and black hole effect" will affect driving safety, and in...

AI Technical Summary

Problems solved by technology

This method solves the intensity transition of the light intensity in the tunnel extension section, but its defect is that the light intensity transition of the extension section cannot be adjusted adaptively with the sunlight change, and lacks the flexibility of light adjustment; (2) light control method, such as patent No. ZL201310125219.X discloses a highway tunnel lighting system and lighting method, which adopts the method of setting lighting lamps and shading sheds at the two ports of the tunnel, and arranging a large number of liquid crystal light valve plates inside the shading sheds, and controlling the illumination lights This method can adaptively adjust the lighting environment of the extension section according to the intensity of natural light, but its disadvantage is that a large number of liquid crystal light valve plates will increase the construction and maintenance costs. , which also increases the difficulty of construction and maintenance

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