A method for operating an ultra sound sensing device for a motor vehicle having an improved signal evaluation, ultra sound sensing device, as well as motor vehicle driver assistance system

摘要

The invention relates to a method for operating an ultra sound sensing device (3) for a motor vehicle (3), with which, by means of an ultrasonic sensor (4) an ultrasonic signal is received and on the basis of the received ultrasonic signal a raw signal (15) is output, by means of an evaluation device (13) of the ultrasonic sensor (4) on the basis of the raw signal (15) a sensor signal and the sensor signal is determined via a data line (10) to a control unit (5) is transmitted, wherein, by means of the evaluation unit (13) for determining of the sensor signal the raw signal is mixed with at least one mixing signal, so that a predetermined frequency band (21) of the raw signal (15), which describes the received ultrasonic signal, to a lower frequency band (22) is reacted and the mixed raw signal (16) is scanned then.n="24"