Ultrasonic sensor for e.g. monitoring surrounding of industrial and automobile areas, has damping unit i.e. induction coil, provided for reducing reverberation time of ultrasonic source after production of ultrasonic pulses

摘要

The sensor has an ultrasonic source i.e. piezoelectric unit (4), for producing ultrasonic pulses, and an ultrasonic receiver for receiving ultrasonic waves. A damping unit i.e. induction coil (6), is provided for reducing a reverberation time of the ultrasonic source after the production of the ultrasonic pulses, where the damping element is designed as an adjustable unit. A transformer is provided for supplying a voltage to the ultrasonic source. An independent claim is also included for a method for operating an ultrasonic sensor.