Method for controlling a cornering light and lighting device
First Claim
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1. A method for controlling a predictive cornering light, the method comprising:
- providing a vehicle having at least one headlight comprising a pivoting element, an optical monitoring device that monitors a roadway or lane in front of the vehicle and generates roadway data, and a control unit,generating a model of a headlight light distribution using the roadway data,determining a pivoting angle by rotating the model of the headlight distribution to minimize a deviation between the model of the headlight light distribution and the roadway, actuating the pivoting element to set a headlight direction for illuminating the roadway or lane to match the pivoting angle,wherein minimizing the deviation between the model of the headlight light distribution and the roadway corresponds to minimizing a difference of at least one right-hand partial deviation between the roadway and the model and of at least one left-hand partial deviation between the roadway and the model of the headlight light distribution,wherein the model of the headlight light distribution is a section model,wherein each partial deviation between the model of the headlight light distribution and the roadway is determined by calculating at least one area between an illumination boundary in a section of the section model and a portion of a curve characterizing a roadway course or lane course corresponding to the section.
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Abstract
The invention relates to a method for controlling a predictive cornering light with at least one headlight with a pivoting means for the controlled pivoting of the headlight, wherein a monitoring device is provided, which monitors the roadway and/or lane in front of the vehicle, and a control unit is provided, which, on the basis of the data of the monitoring device, drives the pivoting means for setting the headlight for illuminating the roadway and/or lane. The invention also relates to a lighting device in this regard.
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Citations
27 Claims
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1. A method for controlling a predictive cornering light, the method comprising:
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providing a vehicle having at least one headlight comprising a pivoting element, an optical monitoring device that monitors a roadway or lane in front of the vehicle and generates roadway data, and a control unit, generating a model of a headlight light distribution using the roadway data, determining a pivoting angle by rotating the model of the headlight distribution to minimize a deviation between the model of the headlight light distribution and the roadway, actuating the pivoting element to set a headlight direction for illuminating the roadway or lane to match the pivoting angle, wherein minimizing the deviation between the model of the headlight light distribution and the roadway corresponds to minimizing a difference of at least one right-hand partial deviation between the roadway and the model and of at least one left-hand partial deviation between the roadway and the model of the headlight light distribution, wherein the model of the headlight light distribution is a section model, wherein each partial deviation between the model of the headlight light distribution and the roadway is determined by calculating at least one area between an illumination boundary in a section of the section model and a portion of a curve characterizing a roadway course or lane course corresponding to the section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for controlling a predictive cornering light, the method comprising:
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providing a vehicle having at least one headlight comprising a pivoting element, an optical monitoring device that monitors a roadway or lane in front of the vehicle and generates roadway data, and a control unit, generating an auxiliary line using the roadway data, performing an area determination using the profile of the roadway data and an auxiliary line proceeding from the front of the vehicle, determining a point of intersection between the course of the roadway and the auxiliary line and using the point of intersection to characterize a pivoting angle, driving the headlight using the pivoting angle, wherein the area determination is effected in such a way that a predefinable ratio is achieved between a first area between the auxiliary line and the roadway course up to the point of intersection thereof and a second area between the auxiliary line and a roadway course after the point of intersection up to a predefinable distance. - View Dependent Claims (14, 15, 16)
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17. A method for controlling a predictive cornering light, the method comprising:
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providing a vehicle having at least one headlight comprising a pivoting element, an optical monitoring device that monitors a roadway or lane in front of the vehicle and generates roadway data, and a control unit, generating a model of a headlight light distribution using the roadway data, determining a pivoting angle by rotating the model of the headlight distribution to minimize a deviation between the model of the headlight light distribution and the roadway, actuating the pivoting element to set a headlight direction for illuminating the roadway or lane to match the pivoting angle, wherein minimizing the deviation between the model of the headlight light distribution and the roadway corresponds to minimizing a sum of a plurality of partial deviations of the roadway from the model of the headlight light distribution, wherein the model of the headlight light distribution is a volume model, wherein determining each of the partial deviations is carried out by determining an intersection area between a roadway plane and a volume and by determining an at least one area proportion which lies on the left or on the right alongside the lane on the intersection area.
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18. A method for controlling a predictive cornering light, the method comprising:
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providing a vehicle having at least one headlight comprising a pivoting element, an optical monitoring device that monitors a roadway or lane in front of the vehicle and generates roadway data, and a control unit, determining a first pivoting angle from the roadway data at a roadway point at a predetermined distance in front of the vehicle, determining a second pivoting angle from the first pivoting angle which depends in part on a curve radius of the roadway, actuating the pivoting element to set a headlight direction for illuminating the roadway or lane to match the second pivoting angle, wherein the first pivoting angle is determined by rotating a model of the headlight distribution to minimize a deviation between the model of the headlight light distribution and the roadway, wherein the second pivoting angle is determined in such a way that a straight line is determined, whose point of intersection with the ascertained roadway course having a curve radius or lane course having a curve radius is chosen such that the resulting two areas between the straight line and the roadway course having a curve radius or the lane course having a curve radius up to the predetermined distance assume a predefinable size ratio. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification