Method for detecting a state of a roadway based on an echo signal of an ultrasonic sensor, sensor arrangement, driver assistance system and motor vehicle

摘要

The invention relates to a method for detecting a condition of a roadway (8) in which an ultrasound signal is emitted by means of an ultrasound sensor (4) of a motor vehicle (1), the ultrasound signal reflected by an object is received and an echo signal (E) is provided, which describes the reflected, received ultrasonic signal, and in which by means of a control device (5) the state of the roadway (8) is detected by the echo signal (E), wherein by means of the ultrasonic sensor (4) at least a first portion (10) of the ultrasonic signal in Direction of a region (16) is emitted, which is located between a running surface (14) of a tire (15) of the motor vehicle (1) and a surface (7) of the roadway (8)