A method for detecting a condition of a roadway on the basis of a with an ultrasonic sensor certain distance value, a sensor arrangement, as well as motor vehicle driver assistance system

摘要

The present invention relates to a method for detecting a condition of a roadway (8), with which, by means of an ultrasonic sensor (4) of a motor vehicle (1) an ultrasonic signal is emitted from an object and the reflected ultrasound signal is received and with which, by means of a control device (5) on the basis of a time duration between the transmission of the ultrasonic signal and the reception of the reflected ultrasonic signal is at least a distance value (a) is determined, and the state of the roadway (8) on the basis of the at least one distance value (a) is detected, wherein the ultrasonic signal by means of the ultrasonic sensor (4) in a direction of a aufschleuderbereichs (13) is transmitted, in which in the case of deposits on a surface (7) of the roadway (8) when the water (12) at least a part of the water (12) during rolling of a wheel (6) of the motor vehicle (1) is applied by spin-coating.