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公开(公告)号：US12130134B2
公开(公告)日：2024-10-29
申请号：US17971254
申请日：2022-10-21
Applicant: Melexis Technologies SA
Inventor： Wolfram Kluge
IPC: G01B7/30 , G01B7/14 , G01D5/14 , G01D5/20 , G01R33/00 , G01R33/06 , G01R33/07 , G01R33/09 , G06F15/00
Abstract: A sensor circuit for determining an angular position of a rotating object configured for generating or modulating a magnetic field includes: a first sensor for providing a first sensor signal; a second sensor for providing a second sensor signal a signal correction block for receiving the first/second sensor signal or a signal derived therefrom as a first/second input signal, and for receiving a plurality of feedback signals; and configured for providing a first corrected signal and a second corrected signal; an angle calculation block configured for receiving the first and the second corrected signal, and for determining the angular position signal as a function of a ratio of the first and the second corrected signal; a feedback block configured for receiving the angular position signal, and for generating the plurality of feedback signals based on the angular position signal, with an improved linearity.
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公开(公告)号：US12111185B2
公开(公告)日：2024-10-08
申请号：US17750114
申请日：2022-05-20
Applicant: Melexis Technologies SA
Inventor： Nicolas Dupre , Lionel Tombez , Gael Close , Yves Bidaux , David Goyvaerts
Abstract: Angular position sensor system comprising: a cylindrical magnet rotatable about a rotation axis; and an angular position sensor device comprising: a substrate comprising a plurality of magnetic sensitive elements configured for measuring a first magnetic field component in a first direction and a second magnetic field component in a second direction perpendicular to the first direction; and a processing circuit configured for calculating the angular position; the sensor device being oriented such that the first direction is oriented in a circumferential direction, and the second direction is either parallel or orthogonal to the rotation axis; the sensor device being located at a predefined position where a magnitude of a third magnetic field component orthogonal to the first and second magnetic field component is negligible over the 360° angular range.
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公开(公告)号：US20240219166A1
公开(公告)日：2024-07-04
申请号：US18539586
申请日：2023-12-14
Applicant: Melexis Technologies SA
Inventor： Sébastien LEROY , Lionel TOMBEZ
IPC: G01B7/30
CPC classification number: G01B7/30
Abstract: A method of testing a sensor device includes a single angle calculator and at least two magnetic sensor elements. The method includes the steps of: a) obtaining signals from the sensor elements; b) amplifying and digitizing the signals from the sensor elements; c) applying a first input value IN1 derived from the digitized signal, to the angle calculator, to obtain a first angle value; d) applying a second input value IN2 derived from the digitized signal, to the angle calculator, to obtain a second angle value; e) performing a consistency test of the first and second angle value; f) detecting an error of the sensor device or the angle calculator based on an outcome of the consistency test.
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公开(公告)号：US11988689B2
公开(公告)日：2024-05-21
申请号：US17974869
申请日：2022-10-27
Applicant: Melexis Technologies SA
Inventor： Bruno Boury , Robert Racz , Antonio Cacciato , Jian Chen
CPC classification number: G01R15/148 , H10N52/01 , H10N52/101 , H10N52/80
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.
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公开(公告)号：US11927606B2
公开(公告)日：2024-03-12
申请号：US18071304
申请日：2022-11-29
Applicant: Melexis Technologies SA
Inventor： Lucian Barbut , Francis Monchal , Simon Houis , Lionel Tombez
CPC classification number: G01R15/202 , G01R15/205 , G01R19/32
Abstract: A sensor device includes a silicon substrate having an active surface; a first sensing area disposed near a first edge of the active surface of the silicon substrate such that the first sensing area has at least one first magnetic sensing element is made of a first compound semiconductor material and contact pads; and a second sensing area disposed near a second edge of the active surface of the silicon substrate, such that the second edge is substantially opposite to the first edge, such that the second sensing area has at least one second magnetic sensing element made of a second compound semiconductor material and contact pads. A processing circuit is disposed of in the silicon substrate and is electrically connected via wire bonds and/or a redistribution layer with the contact pads of the first and second sensing areas.
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Patent Agency Ranking
公开(公告)号：US11921173B2
公开(公告)日：2024-03-05
申请号：US17838684
申请日：2022-06-13
Applicant: Melexis Technologies SA
Inventor： Gael Close , Nicolas Dupre , Jean-Claude Depoorter , Yves Bidaux
Abstract: A method of determining an orientation α,β of a magnet which is pivotable about a reference position having a predefined position relative to a semiconductor substrate, comprising: a) determining at least two of the following magnetic field gradients: i) a first magnetic field gradient dBx/dx; ii) a second magnetic field gradient dBy/dy; iii) a third magnetic field gradient dBz/dx; iv) a fourth magnetic field gradient dBz/dy; b) determining a first angle α based on at least one of the magnetic field gradients; c) determining a second angle β based on at least one of the magnetic field gradients. A sensor device is configured for performing this method. A sensor system includes such sensor device and a magnet, optionally connected to a joystick.
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公开(公告)号：US20240060838A1
公开(公告)日：2024-02-22
申请号：US18453481
申请日：2023-08-22
Applicant: Melexis Technologies SA
Inventor： Appo VAN DER WIEL , Lucian BARBUT , Bruno BRAJON , Gael CLOSE , Enrico GASPARIN
IPC: G01L3/10
CPC classification number: G01L3/102
Abstract: A magnetoelastic torque sensor system includes a shaft having at least one axial section magnetized in a circumferential direction; and a magnetic sensor device arranged in the vicinity of the shaft. The sensor device has a first semiconductor substrate having a processing circuit, a second semiconductor substrate having a first magnetic sensor, and a third semiconductor substrate having a second magnetic sensor. Each magnetic sensor is configured for measuring a magnetic field component. The first, second and third semiconductor substrates are incorporated in a single packaged device. The processing circuit is configured for determining a pairwise difference between the magnetic field components, and for outputting a signal or a value indicative of a torque exerted upon the shaft, based on said pairwise difference. A method of measuring a torque exerted upon a shaft is provided.
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公开(公告)号：US11852507B2
公开(公告)日：2023-12-26
申请号：US18090123
申请日：2022-12-28
Applicant: Melexis Technologies SA
Inventor： Lionel Tombez , Yves Bidaux , Gael Close
Abstract: A position sensor device includes: a first, second and third magnetic sensor for measuring a first magnetic field component oriented in the first direction, and a second magnetic field component oriented in a second direction perpendicular to the first direction; a processing circuit for determining a first and a second difference of signals provided by the first and third sensor, and for determining and outputting a first angle based on these differences; and for determining a third and a fourth difference of signals provided by the second sensor and one of the first and the third sensor; and for determining a second angle based on the third and the fourth difference, and for outputting the second angle and/or a diagnostic signal based on a comparison of the first and second angle.
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公开(公告)号：US20230393002A1
公开(公告)日：2023-12-07
申请号：US18328093
申请日：2023-06-02
Applicant: Melexis Technologies SA
Inventor： Theo LE SIGNOR , Gael CLOSE , Nicolas DUPRE
CPC classification number: G01L5/0061 , G01L1/122 , G01L1/24 , B25J13/085 , B25J9/1612 , B25J15/08
Abstract: A soft sensor arrangement for measuring a force includes a sensor, a deformable element deformable by the force, and an element for reacting with the sensor for measuring the force by a deformation of the deformable element. The deformable element extends at least partially between the sensor and the element.
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公开(公告)号：US11797043B2
公开(公告)日：2023-10-24
申请号：US17940479
申请日：2022-09-08
Applicant: Melexis Technologies SA
Inventor： Gael Close , Nicolas Dupre , Théo Le Signor
IPC: G05G9/047 , G06F3/0338
CPC classification number: G05G9/047 , G06F3/0338 , G05G2009/04755
Abstract: A magnetic sensor system includes an integrated circuit comprising a semiconductor substrate. The semiconductor substrate has a plurality of magnetic sensors configured for measuring at least two first magnetic field components oriented in a first direction, and for measuring at least two second magnetic field components oriented in a second direction; a permanent magnet movable relative to the integrated circuit and configured for generating a magnetic field. A processing circuit is configured for determining at least two physical quantities related to a position of the magnet, using a predefined algorithm based on the measured first and second magnetic field components or values derived therefrom, as inputs, and that uses a plurality of at least eight constants which are determined using machine learning. A force sensor system, a joystick or thumbstick system, and a method may use the magnetic sensor system.
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