Adaptive bend auxiliary lighting method and device

Abstract

The invention aims to provide an adaptive bend auxiliary lighting method and an adaptive bend auxiliary lighting device. The method and the device make a head lamp of an automobile change the illumination angle in advance according to road conditions, so that a driver can previously make visual confirmation of the bend where the vehicle is about to enter to ensure the driving safety. The lighting device comprises a controller, the head lamp, a camera and an executing mechanism, wherein the camera is used for acquiring an image of a road in front of the vehicle; the executing mechanism is used for adjusting the illumination angle of the head lamp; the controller receives the image acquired by the camera and processes the image to obtain a lane line or road boundary; and the controller fits the road and calculates the radius of the bend and the distance from the vehicle to the starting position of the bend according to the lane line or the road boundary obtained by processing, calculates the illumination angle required by the head lamp according to the illuminating range requirement of the vehicle, the calculated radius of the bend and the distance from the vehicle to the starting position of the bend, and controls the executing mechanism to move and adjusts the illumination angle of the head lamp according to the angle.

Description

technical field [0001] The invention belongs to an automobile lighting system, in particular to an adaptive curve auxiliary lighting method and device. Background technique [0002] The traditional headlight system has dark areas in the lighting of curves, high speeds, rural areas and adverse weather conditions, which seriously affects the safety of the car. Therefore, the adaptive cornering auxiliary lighting system becomes necessary. For cornering lighting, most of the existing adaptive cornering auxiliary lighting systems determine the cornering angle of the headlights according to the steering wheel angle or wheel angle and vehicle speed. For example, the patent of "lamp system and lamp deflection control method" with the publication number CN101377274 uses the vehicle speed detected by the vehicle speed sensor and the steering angle detected by the steering wheel angle sensor to detect the steering angle of the steering wheel, based on the vehicle speed and the steering...

AI Technical Summary

Problems solved by technology

However, since the lighting angle of the headlights in the above-mentioned patent is determined based on the vehicle speed and the steering wheel angle, the adaptive cornering auxiliary lighting can only be started when the vehicle has reached very close to the starting point of the curve, and the driver cannot actually turn around the curve. Before driving on the road, the steering or angle of the curve is determined, which adds unsafe factors to driving at night

There are also a small number of adaptive cornering auxiliary lighting systems that work in combination with GPS and electronic maps, such as the patent of "A device for controlling the lighting angle of vehicle headlights" with the publication number CN101224724A, which can be used before entering a corner. Lighting for curves, but the existing electronic maps are very imperfect, many roads have not been entered into electronic maps, and the current GPS positioning accuracy is not very high, so it is impossible to provide accurate positioning for the adaptive curve auxiliary lighting system

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