Sensor for the detection of the direction of a magnetic field having magnetic flux concentrators and hall elements
First Claim
1. A sensor for the detection of the direction of a magnetic field, comprising:
- a magnetic field concentrator having a generally flat shape extending substantially in a first plane, a first Hall-effect element or a first group of Hall-effect elements for measuring a first component of the magnetic field in said first plane and a second Hall-effect element or a second group of Hall-effect elements for measuring a second component of the magnetic field in said first plane, wherein the Hall-effect elements are positioned near a peripheral edge of the magnetic field concentrator in a second plane that is substantially parallel to said first plane.
3 Assignments
0 Petitions
Accused Products
Abstract
A sensor for the detection of the direction of a magnetic field comprises one single magnetic field concentrator with a flat shape and at least a first horizontal Hall-effect element and a second horizontal Hall-effect element, whereby the Hall-effect elements are arranged in the area of the edge of the magnetic field concentrator. Within its environment, the magnetic field concentrator alters the course of the field lines of the magnetic field and, in particular, has the effect that the field lines which, in the absence of the magnetic field concentrator would run parallel to the surface of the Hall-effect elements penetrate the Hall-effect elements almost vertically to their surface. Instead of horizontal Hall-effect elements, vertical Hall-effect elements can also be used when they are arranged beside the magnetic field concentrator. The sensor is particularly suitable as an angle sensor.
240 Citations
18 Claims
-
1. A sensor for the detection of the direction of a magnetic field, comprising:
-
a magnetic field concentrator having a generally flat shape extending substantially in a first plane, a first Hall-effect element or a first group of Hall-effect elements for measuring a first component of the magnetic field in said first plane and a second Hall-effect element or a second group of Hall-effect elements for measuring a second component of the magnetic field in said first plane, wherein the Hall-effect elements are positioned near a peripheral edge of the magnetic field concentrator in a second plane that is substantially parallel to said first plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. Sensor for the detection of the direction of a magnetic field, comprising:
-
at least three magnetic field concentrators of generally flat shape arranged in a plane symmetrically relative to a point of symmetry, each magnetic field concentrator having an edge facing an edge of a neighbouring magnetic field concentrator, wherein a portion of each of the facing edges are substantially parallel to each other, and each of the magnetic field concentrators having a Hall-effect element or a group of Hall-effect elements associated therewith, wherein the Hall-effect elements are arranged near said portion of the edge thereof. - View Dependent Claims (16, 17, 18)
-
Specification