Patent ID: 9114754
Filing Date: 2015-08-25
Classification: B60Q,G01M

Abstract:
1. A method for beam range regulation of at least one headlamp of a vehicle, comprising: reading in a camera image of at least one camera of the vehicle, wherein the camera image includes at least a part of a representation of a projection surface of a light cone of the headlamp in front of the vehicle; determining at least one coordinate of at least one of (i) predefined brightness transition in the camera image, and (ii) a predefined brightness inhomogeneity in the camera image, and additionally determining an unevenness contour of the surface of a roadway by determining a height contour of the roadway surface over a predefined distance by traveling the roadway with the vehicle over the predefined distance; comparing the determined coordinate to a target coordinate to obtain a difference between the determined coordinate and the target coordinate, wherein the target coordinate represents a coordinate at which the at least one of the predefined brightness transition and the predefined brightness inhomogeneity is expected, and wherein the target coordinate is adapted corresponding to the unevenness contour of the roadway surface for a repeated pitching motion of the vehicle caused by the unevenness contour of the roadway surface; and controlling the headlamp with a beam range modification signal to modify the beam range, wherein the beam range modification signal is a function of the difference between the determined coordinate and the target coordinate.