公开(公告)号：US11796305B2

公开(公告)日：2023-10-24

申请号：US17720920

申请日：2022-04-14

Applicant: Melexis Technologies SA

Inventor： Yves Bidaux

IPC: G01R11/00 ,  G01R33/07 ,  G01D5/14 ,  G01B7/30 ,  G01B7/02

CPC classification number: G01B7/30 ,  G01B7/023 ,  G01D5/145 ,  G01R33/07

Abstract: A position sensor system for determining a position of a sensor device relative to a magnetic structure, the system comprising: said magnetic structure comprising a plurality of non-equidistant poles; said sensor device comprising at least three magnetic sensors spaced apart over predefined distances; and the sensor device being adapted for: a) measuring at least three in-plane magnetic field components, and for calculating two in-plane field gradients therefrom; b) measuring at least three out-of-plane magnetic field components, and for calculating two out-of-plane field gradients therefrom; c) calculating a coarse signal based on these gradients; d) calculating a fine signal based on these gradients; e) determining said position based on the coarse signal and the fine signal.

公开(公告)号：US20230251110A1

公开(公告)日：2023-08-10

申请号：US18302407

申请日：2023-04-18

Applicant: MELEXIS TECHNOLOGIES SA

Inventor： Takumi YOSHIYA

IPC: G01D5/14

CPC classification number: G01D5/145

Abstract: A rotation angle detector includes a magnet arranged to rotate, and a magnetic detection circuit provided with a first pair of magnetic detection elements arranged to be in combination sensitive to a first magnetic field in circumferential direction to the first surface and to a second magnetic field in normal direction to the first surface and arranged away from the rotation axis, and configured to detect magnetic flux of the magnet. A second pair of magnetic detection elements are arranged to be in combination sensitive to the first magnetic field in circumferential direction to the first surface and to the second magnetic field in normal direction to the first surface. A signal processing unit is configured to output a signal representative of a rotation angle of the magnet based on outputs of the first and second pair of magnetic detection elements.

公开(公告)号：US20230213359A1

公开(公告)日：2023-07-06

申请号：US18185521

申请日：2023-03-17

Applicant: Melexis Technologies SA

Inventor： Christian SCHOTT ,  Gael CLOSE ,  Bruno BRAJON

IPC: G01D5/14 ,  G01R33/09

CPC classification number: G01D5/145 ,  G01R33/091

Abstract: A position sensor system is arranged for determining a position of a sensor device movable along a predefined path relative to a magnetic source. The system includes the magnetic source and the sensor device. The magnetic source has a first plurality of magnetic pole pairs arranged along a first track and a second plurality of magnetic pole pairs arranged along a second track, centrelines of the tracks are spaced apart by a predefined track distance. The sensor device is configured for measuring at least two orthogonal magnetic field components at a first sensor location, and at least two second orthogonal magnetic field components at a second sensor location. The first and second sensor location are spaced apart by a predefined sensor distance smaller than the predefined track distance, in a direction transverse to the tracks.

公开(公告)号：US20230213358A1

公开(公告)日：2023-07-06

申请号：US18090206

申请日：2022-12-28

Applicant: Melexis Technologies SA

Inventor： Lionel TOMBEZ ,  Yves BIDAUX ,  Gael CLOSE

IPC: G01D5/14 ,  G01B7/30

CPC classification number: G01D5/145 ,  G01B7/30

Abstract: A position sensor device comprising two or more magnetic sensors capable of measuring one or two or three orthogonal magnetic field components at various sensor locations; and a processing circuit for determining a first, a second and a third difference of two respective components, and for determining a first ratio of the first and second difference, and determining and outputting a first angle based on this first ratio; and for determining a second ratio of the first and third difference, for optionally determining a second angle, optionally comparing the two angles or the two ratios; and for outputting at least one of: the second angle, the two ratios, a diagnostic signal based on a comparison of the angles or ratios.

公开(公告)号：US20230204682A1

公开(公告)日：2023-06-29

申请号：US18148099

申请日：2022-12-29

Applicant: Melexis Technologies SA

Inventor： Bruno BOURY ,  Asparuh GRIGOROV ,  Stephane RAUW

IPC: G01R31/392 ,  G01R31/3832 ,  G01R19/165 ,  G01R15/20

CPC classification number: G01R31/392 ,  G01R31/3832 ,  G01R19/1659 ,  G01R15/202

Abstract: A current sensor device for measuring a current in a conductor comprising: current sensing means comprising a magnetic sensing element for contactlessly measuring the current; amplification means arranged to act in a first and second state, said amplification means in said first and second state being arranged for amplifying a first and second signal, respectively, from said current sensing means with an adjustable first gain and a second gain and a first and second bandwidth to yield a first and second amplified signal, respectively, wherein said first gain is higher than the second gain, wherein the first gain and the second gain are larger than 1; processing means for controlling at least said first gain, for detecting an event based on at least said second amplified signal and for producing a signal indicative of said event; an output terminal arranged for outputting a signal indicative of said current based on said first amplified signal; and an output terminal arranged for outputting said signal indicative of the event.

公开(公告)号：US20230165162A1

公开(公告)日：2023-05-25

申请号：US18058426

申请日：2022-11-23

Applicant: Melexis Technologies SA

Inventor： Brecht PUT ,  Tim VANGERVEN

IPC: H01L43/06 ,  H01L23/00 ,  H01L23/31

CPC classification number: H01L43/065 ,  H01L23/562 ,  H01L23/3107

Abstract: An integrated sensor and method for manufacturing the sensor includes a first component having a first material with a predetermined first value of coefficient of thermal expansion (CTE), and a second component over the first component. The second component includes a second material with a predetermined second value of CTE different from the first value. An interlayer is provided by molecular layer deposition, for minimizing stress caused by coefficient of thermal expansion mismatch between the first and second components. The interlayer includes an organic-inorganic hybrid polymer compound.

公开(公告)号：US11635310B2

公开(公告)日：2023-04-25

申请号：US17371996

申请日：2021-07-09

Applicant: Melexis Technologies SA

Inventor： Javier Bilbao De Mendizabal

IPC: G01D5/245

Abstract: A position sensor system comprising: a magnetic field generator movable relative to two sensor devices or vice versa. The system has at least one processor adapted with a special algorithm for determining a position of the magnetic field generator in a manner which is highly robust against a disturbance field. A method for determining the position of the magnetic field generator based on a set of equations, in particular a set of linear equations which allows to completely eliminate the external disturbance field.

公开(公告)号：US11592317B2

公开(公告)日：2023-02-28

申请号：US17749429

申请日：2022-05-20

Applicant: Melexis Technologies SA

Inventor： Gael Close ,  Eric Lahaye ,  Lionel Tombez

IPC: G01D5/14 ,  G01D5/24 ,  G01P3/44 ,  G01D5/244

Abstract: Method of determining a position of a sensor device relative to a magnetic source, includes: a) determining a first and a second magnetic field component at a first sensor location; b) determining a third and a fourth magnetic field component at a second sensor location; c) determining a first difference of the first and third component, and determining a second difference of the second and fourth component, and determining a first angle based on a ratio of the first and second difference; d) determining a first sum of the first and third component, and determining a second sum of the second and fourth component; e) determining a second angle based on a ratio of said first and second sum; f) comparing the first and second angle to detect error.

公开(公告)号：US20230049864A1

公开(公告)日：2023-02-16

申请号：US17974869

申请日：2022-10-27

Applicant: Melexis Technologies SA

Inventor： Bruno BOURY ,  Robert RACZ ,  Antonio CACCIATO ,  Jian CHEN

IPC: G01R15/14 ,  H01L43/04 ,  H01L43/06 ,  H01L43/14

Abstract: A circuit for sensing a current comprises a substrate having a first and a second major surface, the second major surface being opposite to the first major surface. At least one magnetic field sensing element is arranged on the first major surface of the substrate and is suitable for sensing a magnetic field caused by a current flow in a current conductor coupled to the second major surface. The substrate also comprises at least one insulation layer, substantially buried between the first major surface and the second major surface of the substrate.

公开(公告)号：US11561268B2

公开(公告)日：2023-01-24

申请号：US17207290

申请日：2021-03-19

Applicant: Melexis Technologies SA

Inventor： Nicolas Dupre ,  Yves Bidaux

IPC: G01R33/07 ,  G01R33/022 ,  G01R33/00

Abstract: A method of determining a gradient of a magnetic field, includes the steps of: biasing a first/second magnetic sensor with a first/second biasing signal; measuring and amplifying a first/second magnetic sensor signal; measuring a temperature and/or a stress difference; adjusting at least one of: the second biasing signal, the second amplifier gain, the amplified and digitized second sensor value using a predefined function f(T) or f(T, ΔΣ) or f(ΔΣ) of the measured temperature and/or the measured differential stress before determining a difference between the first/second signal/value derived from the first/second sensor signal. A magnetic sensor device is configured for performing this method, as well as a current sensor device, and a position sensor device.