Light-assisted vehicle distance judgment system and method in dense fog area of ​​expressway

Abstract

The invention provides a lamplight assisting vehicle distance judgment system for a dense fog region of an expressway. The system comprises a dense fog detection unit, a controller, a power supply unit and a lamplight set. When dense fog is detected through the dense fog detection unit, the controller controls the lamplight set to be turned on. The lamplight set comprises lamps in two or more colors, the lamps are arranged alternately along a road, emitted light beams are transmitted horizontally along the road and perpendicular to the vehicle running direction, the intervals between the light beams are equal, and the light beams are arranged high and low in a staggered manner; and the intervals between the light beams are larger than or equal to the stopping sight distance under the maximum speed of the road segment of the expressway. By the adoption of the system, the dense fog is detected through the dense fog detection unit, an instruction is sent out through the controller, the lamplight set is turned on, the bright light beams are generated in the fog through the Tyndall effect, a driver judges whether an obstacle exists in a safety region in front of the driver or not through the integrity of the light beams, needed information of the driver in the dense fog is provided, the speed difference is reduced, and the traffic efficiency and safety on foggy days are improved greatly.

Description

technical field [0001] The invention belongs to a lighting system for expressway auxiliary safety, and in particular relates to a system and method for judging the distance between vehicles aided by light in dense fog areas of an expressway. Background technique [0002] Most expressways in our country pass through special terrains such as mountains and hills, and dense fog occurs from time to time. The reduced visibility caused by dense fog seriously affects the driving safety of expressways and brings huge economic losses. And the traffic accident that thick fog causes is often the heavy, extraordinarily vicious traffic accident of multi-vehicle serial rear-end collision. The problem of dense fog on expressways needs to be solved urgently. [0003] At present, the main idea to solve the problem of dense fog on expressways at home and abroad is to detect the emergence of dense fog through observation stations, and then the control center will make road closures, dynamic i...

AI Technical Summary

Problems solved by technology

For this type of method, on the one hand, vehicles that have entered the road section just before the dense fog occurs, or have not been restricted or notified of the dense fog, are still affected by the dense fog

On the other hand, due to the high cost of such systems, it is difficult to popularize them in economically underdeveloped countries and regions.

Moreover, such systems are not helpful to meet the highway traffic demand in foggy days, and there are still economic losses caused by highway closures.

[0004] Generally speaking, the existing safety system in the fog area of ​​the expressway has poor timeliness, high cost, and weak resolution. A new safety system is urgently needed to further solve the problem of dense fog on the expressway

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