METHOD FOR OPERATING AN ULTRASOUND SENSOR DEVICE FOR A MOTOR VEHICLE WITH ADAPTION OF A TIME SEQUENCE OF AN AMPLITUDE IN FREQUENCY-MODULATED EXCITATION SIGNALS

摘要

The invention relates to a method for operating an ultrasound sensor device (3) for a motor vehicle (1), in which a diaphragm of a first ultrasound sensor (4a) for emitting a first ultrasound signal is excited by a frequency-modulated first excitation signal (10a) and a diaphragm of a second ultrasound sensor (4b) for emitting a second ultrasonic signal is excited with a frequency-modulated second excitation signal, wherein the membrane of the first ultrasonic sensor (4a) and the second ultrasonic sensor (4b) have the same resonant frequency (fR), wherein the first excitation signal (10a) has a first frequency range (fa) and the second excitation signal comprises a second frequency range (fb) different from the first frequency range (fa), wherein a time profile of a maximum amplitude (Am) of the first excitation signal (10a) and a time profile of a maximum amplitude (Am ) of the second excitation signal be.