Magnetostrictive sensor apparatus having an analog branch and a digital branch and a method for operating such a magnetostrictive sensor apparatus
AssigneeBalluff GmbH
InventorsZoltán Kántor, Zoltán Pólik, Attila Szabó, Zoltán Wimmer
Life of this patent
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Abstract
A magnetostrictive sensor apparatus is provided, comprising at least one magnetic position marker, at least one sensing member with a waveguide to which the at least one magnetic position marker is contactlessly coupled, a detector coil device which is associated with the at least one sensing member, a data processing device which determines a time profile with a shape over time of signals of the detector coil device, wherein a recording of the time profile is provided, and an analysis device which analyzes the time profile.
Claims20
Magnetostrictive sensor apparatus, comprising:
- at least one magnetic position marker;
- at least one sensing member with a waveguide to which the at least one magnetic position marker is contactlessly coupled;
- a detector coil device which is associated with the at least one sensing member;
- a data processing device which determines a time profile with a shape over time of signals of the detector coil device, wherein a recording of the time profile is provided;
- an analysis device which analyzes the time profile;
- an analog branch which provides first analog signals of the detector coil device;
- a digital branch which provides digital signals which are processed or become processed by means of the data processing device, the digital branch comprising a digital-to-analog converter which provides second analog signals;
- and
- a comparison device for the first analog signals and the second analog signals.
Method for operating a magnetostrictive sensor apparatus, comprising:
- determining signals of a detector coil device in a time profile with a shape over time, recording these signals, and analyzing these signals;
- determining at least one of echo signals and interference signals during the analysis which are taken into account in an evaluation;
- subtracting the at least one of the echo signals and the interference signals from primary measuring signals;
- wherein:
- the primary measuring signals are provided as first analog signals, and second analog signals are provided by means of analyzing the time profile of signals of the detector coil device, and
- the first analog signals are linked to the second analog signals.
Dependencies are inferred from the claim text.