A method for determining a position of an object in an environmental region of a motor vehicle by emitting an ultrasound signal having different frequencies, a computing device and an ultrasound sensor device

摘要

The invention relates to a method for determining a position of an object (8) in an environmental region (9) of a motor vehicle (1), in which an ultrasonic sensor (4) is actuated for emitting an ultrasonic signal (10), wherein the ultrasonic signal (10) has a first signal section (15) having a first frequency and a second signal section (16) having a second frequency different from the first frequency, in which of the object (8) reflected ultrasonic signal (10) of the first signal section (15) and the second Signal portion (16) are detected, a first amplitude (A1) of the first signal portion (15) in the reflected ultrasonic signal (10) and a second amplitude (A2) of the second signal portion (16) in the reflected ultrasonic signal (10) are determined and the Position of the object (8) on the basis of the first amplitude (A1) and the second amplitude (A2) is determined, wherein the ultrasonic sensor (4) is driven such that the Ultrasound signal (10) at least one predetermined phase jump (17, 18) and the first signal portion (15) and the second signal portion (16) in the reflected ultrasonic signal (10) based on the at least one phase jump (17, 18) is detected.