METHOD AND CONTROL UNIT FOR CHECKING THE PLAUSIBILITY OF A BEAM WIDTH TEST VALUE OF A LIGHT CONE OF A VEHICLE HEADLIGHT

摘要

A method is proposed for checking the plausibility of a beam width test value of a light cone of at least one headlight (260) of a vehicle. The method comprises a step of reading-in a reflection intensity of a point on at least one carriageway marking which is illuminated by the light cone, a step of creating a reflection intensity model (240) for the carriageway marking, based on the read-in reflection intensity and a specific distance of the point from the vehicle, wherein the reflection intensity model (240) is designed to assign different reflection intensities to different positions on the carriageway marking in front of the vehicle, a step of determining a beam width plausibility value, in which according to the reflection intensity model (240) a reflection intensity is obtained which corresponds to a reflection intensity threshold value, and a step of comparing the beam width plausibility value with the beam width test value in order to check the plausibility of the beam width test value, in particular in order to check the plausibility of the beam width test value when the beam width plausibility value is within a tolerance around the beam width test value.