Measuring device for contactlessly detecting a ferrmonagnetic object
AssigneeRobert Bosch GmbH
InventorsHeinrich Steinruecken, David Heisenberg, Michael Schulz, Rasmus Rettig, Martin Haas, Klemens Gintner
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Abstract
The invention concerns a measuring device (1) for contactless detection of a ferromagnetic object (4, 5). The measuring device comprises a Hall element (3) and at least one permanent magnet (2), whereby an air gap (6) is located between the Hall element and the permanent magenet. Furthermore, the permanent magnet (2) has a soft-magnetic component (7) on at least one of its front faces that is located between the permanent magnet (2) and the Hall element (3).
Claims11
A measuring device for contactless detection of a ferromagnetic object (5) having
- at least one magnetic field-sensitive element (3), and
- at least one magnet (2),
- whereby an air gap (6) is located between the magnetic field-sensitive element (3) and the ferromagnetic object (5),
- wherein
- the magnet (2) has a soft-magnetic component (7) on at least one of its sides that is located between the magnet (2) and the magnetic field-sensitive element (3).
A measuring device for contactless detection of a ferromagnetic object (5) having
- at least one magnetic field-sensitive element (3), and
- at least one magnet (2),
- whereby the polarization direction of the magnet (2) extends nearly parallel to the ferromagnetic object (5),
- whereby a soft-magnetic component (7a, 7b) is located on each of the two front faces of the magnet (2), and
- whereby the magnetic field-sensitive element (3) is located in a gap (11) between the components (7a, 7b).
Dependencies are inferred from the claim text.