公开(公告)号：US20210131829A1

公开(公告)日：2021-05-06

申请号：US16963136

申请日：2019-01-22

Applicant: MELEXIS TECHNOLOGIES SA

Inventor： Samuel HUBER LINDENBERGER ,  Javier BILBAO DE MENDIZABAL ,  Jan-Willem BURSSENS ,  Wolfram KLUGE ,  Jorg RUDIGER

IPC: G01D5/20 ,  G01B7/00

Abstract: A target configured to be used with a position sensor for sensing a position of the target is described. The target includes at least one elongated conductive loop structure for allowing eddy currents to flow therein and configured to affect a magnetic field received from the position sensor in a preferred direction along the at least one elongated conductive loop structure.

公开(公告)号：US20190265324A1

公开(公告)日：2019-08-29

申请号：US16284283

申请日：2019-02-25

Applicant: Melexis Technologies SA

Inventor： Javier BILBAO DE MENDIZABAL ,  Jan-Willem BURSSENS

IPC: G01R35/00 ,  G01R33/02 ,  G01R33/07 ,  G01R33/09

Abstract: A field-sensor device comprises a first field sensor with a first sensor response to a field. The first sensor response is measured in a first orientation to produce a first sensor signal, a second field sensor with a second sensor response to the field the second sensor response measured in a second orientation different from the first orientation to produce a second sensor signal, and a controller for controlling the first and second field sensors to produce respective first and second sensor signals. The controller comprises a control circuit that converts any combination of first and second sensor signals to equivalent first and second comparable sensor signals in a common orientation, calculates an error signal derived from differences between the first and second comparable sensor signals, and adjusts any combination of the first and second sensor responses to reduce the error signal.

公开(公告)号：US20200348151A1

公开(公告)日：2020-11-05

申请号：US16963333

申请日：2019-01-22

Applicant: MELEXIS TECHNOLOGIES SA

Inventor： Samuel HUBER LINDENBERGER ,  Javier BILBAO DE MENDIZABAL ,  Jan-Willem BURSSENS ,  Wolfram KLUGE ,  Jorg RUDIGER ,  Kevin FAHRNI

IPC: G01D5/22 ,  G01R33/00

Abstract: An apparatus is arranged for sensing a position of a target, in particular for offset invariant sensing of the position of the target is described, as well as the respective target and the method. The apparatus comprises at least two sensor elements. At least one sensor element of the at least two sensor elements generates a magnetic field. At least one other sensor element of the at least two sensor elements receives the magnetic field and outputs at least one signal associated with the received magnetic field. The target affects a coupling of a magnetic flux of the magnetic field between the at least one sensor element generating the magnetic field and the at least one other sensor element receiving the magnetic field and wherein the target is non-rotational invariant.

公开(公告)号：US20190293454A1

公开(公告)日：2019-09-26

申请号：US16249139

申请日：2019-01-16

Applicant: Melexis Technologies SA

Inventor： Yves BIDAUX ,  Jean-Claude DEPOORTER ,  Jan-Willem BURSSENS

IPC: G01D5/14 ,  G01R33/07 ,  G01R33/02

Abstract: A sensor system comprises a magnetic field generator and a sensor device arranged at a distance from said magnetic field generator and adapted for measuring or determining at least one magnetic field component and/or at least one magnetic field gradient component. The magnetic field generator comprises a multi-pole magnet having a number N of pole pairs that are axially magnetized to generate an N-pole magnetic field that is substantially rotationally symmetric around an axis. The magnet comprises a plurality of grooves and/or elongate protrusions that are arranged in a rotationally symmetric pattern around the axis to provide a substantially constant magnetic field gradient in a central region around said axis.

公开(公告)号：US20180031645A1

公开(公告)日：2018-02-01

申请号：US15660337

申请日：2017-07-26

Applicant: Melexis Technologies SA

Inventor： Jan-Willem BURSSENS ,  Robert RACZ

IPC: G01R33/07 ,  H01F41/14 ,  H01F10/32 ,  H01L43/06 ,  G01R33/09 ,  G01R33/02

CPC classification number: G01R33/072 ,  G01R33/0011 ,  G01R33/0052 ,  G01R33/02 ,  G01R33/091 ,  H01F10/32 ,  H01F41/14 ,  H01L43/06

Abstract: A sensor device comprising a substrate, the substrate comprising one or more magnetic sensor elements; a first elastomeric material on top of the one or more magnetic sensor elements; a magnetic layer comprising a soft magnetic metal alloy deposited by electroplating or by sputtering on top of the first elastomeric material; and optionally a second elastomeric material on top of the magnetic layer. The substrate may be a CMOS device with IMC encapsulated between two polyimide layers. The magnetic material may be annealed at 250° C. to 295° C. using a constant or rotating magnetic field having a strength in the range from 100 to 300 mTesla. The soft magnetic alloy is arranged as Integrated Magnetic Concentrator (IMC).