Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Thomas Knittel0
Date of Patent
February 3, 2009
0Patent Application Number
116593900
Date Filed
August 3, 2005
0Patent Primary Examiner
Patent abstract
The invention relates to an ultrasonic sensor with an adjustable detection range for use in gaseous media, preferably air. A threshold value generator generates threshold value curves that are fed to a comparator. The change in the detection range of the ultrasonic sensor, namely, the change in its switching point curve, is carried out by influencing the threshold value curves, whereby, in a selectable manner, the detection range can be adjusted either exclusively in the lateral extension of the sonic cone or else in the axial and lateral extensions of the sonic cone.
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