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US 8,427,136 B2Granted
Magnetic displacement sensor
AssigneeConti Temic microelectronic GmbH
InventorsGerhard Hinkel, Michael Nagel, Andreas Schulze, Roger Pohlmann, Bernd Seitz
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Abstract
A magnetic displacement sensor, where, in order to achieve an improved measurement behavior, magnets are formed in a direction of an x-axis such that a z-component (Bz) of the flux density has an essentially linear characteristic curve in a region of travel and/or the magnets are formed in a direction of a y-axis such that the z-component (Bz) is essentially constant in a region of a transversal offset.
Claims16
A magnetic displacement sensor comprising:
- a first magnet and a second magnet for generating a magnetic field, wherein the magnets are arranged in a state of rest substantially centrally along an x-axis, and the magnets are arranged in the state of rest substantially symmetrically to a y-axis;
- and
- a magnetic flux density sensor, wherein the magnetic flux density sensor and the magnets are displaceable relative to each other in the direction of the x-axis, and the magnetic flux density sensor is configured for measuring a z-component (BZ) running in the direction of a z-axis of the flux density of the magnetic field,
- wherein the magnets are configured in the direction of the x-axis in such a manner that the z-component (Bz) comprises an substantially linear characteristic curve in the region of a travel (ΔX), and/or the magnets are formed in the direction of the y-axis in such a manner that the z-component (Bz) is substantially constant in the region of a transverse offset (ΔY).
1 more element
Dependencies are inferred from the claim text.