Shading Automatic Adjustment System for Highway Tunnel Entrance and Exit

Abstract

The invention discloses a light-shading automatic regulatory system for a highway tunnel exit and entrance, and belongs to the field of transportation. The light-shading automatic regulatory system comprises a light-shading shed and a control system, wherein the light-shading shed is arranged outside the tunnel exit and entrance, the control system is used for adjusting the light-shading degree of the light-shading shed, and the control system comprises an external signal acquisition unit, an AD conversion module, a control unit and a motor transmission system. By using the control system to conduct automatic light-shading control on the tunnel exit and entrance, and through the arrangement of the control unit, smooth transition of the ambient light when a driver drives in or out of the tunnel can be achieved under different external illumination intensities and different traffic flow speeds, thus the automatic adjustment of the light-shading degree of the light-shading shed in the tunnel exit and entrance can be achieved, and thus the occurrence rate of traffic accidents in the tunnel exit and entrance can be sharply reduced.

Description

technical field [0001] The present invention relates to the field of transportation, in particular to an automatic shading system for road tunnel entrances and exits. Background technique [0002] In some mountainous and hilly areas, road tunnels are widely used because of their advantages of reducing driving mileage and saving fuel. Due to the closed structure of the highway tunnel, the brightness difference between the inside and outside of the tunnel is very large. When the driver drives the vehicle into and out of the highway tunnel, he cannot quickly adapt to the sudden change in illumination environment, resulting in frequent traffic accidents at the entrance and exit of the tunnel. At present, there are many methods for shading facilities at the entrance and exit of tunnels, but most of them are fixed shading devices, and the shading degree cannot be adjusted according to different external illumination environments and the speed of traffic flow at the entrance and e...

AI Technical Summary

Problems solved by technology

When the driver drives the vehicle into and out of the highway tunnel, he cannot quickly adapt to the sudden change in illumination environment, resulting in frequent traffic accidents at the entrance and exit of the tunnel

At present, there are many methods for shading facilities at the entrance and exit of tunnels, but most of them are fixed shading devices, and the shading degree cannot be adjusted according to different external illumination environments and the speed of traffic flow at the entrance and exit.

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