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US 2003/0227286 A1Published application
Rotary motion detector
AssigneeSiemens Aktiengesellschaft
InventorsPaul Dunisch, Roland Finkler, Andreas Kuhn, Christoph Nolting, Gunter Schwesig
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Abstract
A rotary motion detector includes an electrically conducting induction element formed essentially as a hollow cylinder and rotatable about a rotation axis. An excitation assembly applies an inhomogeneous magnetic field and induces an eddy current in the induction element, when the induction element rotates about the rotation axis. A sensor assembly detects a measurement signal that depends on the eddy current. The excitation assembly and the sensor assembly are both arranged radially inside the induction element.
Claims19
A rotary motion detector, comprising:
- an electrically conducting induction element formed as a hollow cylinder and rotatable about a rotation axis;
- an excitation assembly applying an inhomogeneous magnetic field to the induction element;
- and
- a sensor assembly,
- wherein the excitation assembly and the sensor assembly are disposed radially inside the induction element, and wherein during a rotation of the induction element about the rotation axis an eddy current is induced in the induction element, with the sensor assembly acquiring a measurement signal in response to the eddy current.
2 more elements
Dependencies are inferred from the claim text.