Method for detecting moisture on a road surface

Abstract

In a method for detecting moisture on a road surface used by a vehicle, wherein at least one acoustic signal resulting from the moisture on the road surface is captured by at least one sensor device arranged on said vehicle, and wherein the captured acoustic signal is analysed via at least one analyser associated with said vehicle, it is provided according to the invention that at least one energy value of at least one signal portion of the captured acoustic signal is calculated for the analysis, that the effective value of the at least one signal portion is calculated, that a shape factor of the at least one signal portion is calculated from the quotient of the effective value and the energy value, that the minimum of the energy value in the at least one signal portion is calculated, that the maximum of the shape factor in the at least one signal portion is determined, that a quotient of the minimum of the energy value and the maximum of the shape factor is created and that said quotient is associated with a degree of wetness of the road surface.

Dependencies are inferred from the claim text.