Patent ID: 6087826
Filing Date: 2000-07-11
Classification: B60G,B60T,G01R

Abstract:
A device for detecting electromagnetic stray effects in systems with at least two inductive sensors which provide an essentially periodic output signal, the device comprising signal evaluation means for evaluating signals of the sensors; means responsive to the evaluated signals for making a test for detecting the expected existence of an electromagnetic stray effect by determining, whether periods of the evaluated signals lie within a period length of expected stray effects; means for making a test in the case when the periods of the evaluated signal lie within a period of expected stray effects, by determining whether detected signal progressions of said evaluated signal have at least a progression typical for stray pick-up; means for conducting plausibility tests of said evaluated signals having a progression typical for stray pickup by comparing the evaluated signals. with parallel measured other signals obtained within the systems; and means responsive to said comparison for detecting that a stray effect exists only if all tested conditions provide a result which is typical for stray effects.