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公开(公告)号：US11788866B2
公开(公告)日：2023-10-17
申请号：US18090206
申请日：2022-12-28
Applicant: Melexis Technologies SA
Inventor： Lionel Tombez , Yves Bidaux , Gael Close
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.
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公开(公告)号：US10809314B2
公开(公告)日：2020-10-20
申请号：US16118638
申请日：2018-08-31
Applicant: Melexis Technologies SA
Inventor： Gael Close , Arnaud Laville , Stefan Rigert , Samuel Huber Lindenberger
Abstract: A field-sensor device comprises a reference field sensor biased with a reference current. The reference field sensor provides a reference sensor signal in response to a field, and a calibrated field sensor biased with an individually adjustable current and providing a calibrated sensor signal in response to the field. A control circuit controls the adjustable current bias of the calibrated field sensor at a calibrated current different from the reference current so that the calibrated field sensor provides a calibrated sensor signal substantially equal to the reference sensor signal in response to a common field. The field sensor device is arranged to be exposed, when in a calibration mode, to a uniform calibration field and, when in operational mode, to an operational field being a field gradient.
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公开(公告)号：US12163807B2
公开(公告)日：2024-12-10
申请号：US17730575
申请日：2022-04-27
Applicant: Melexis Technologies SA
Inventor： Bruno Brajon , Gael Close , Lorenzo Lugani , Lionel Tombez
Abstract: A hybrid position sensor for determining a position of a hybrid target includes a conductive target and a magnet configuration which are rigidly connected and at least partially overlapping. The position sensor has a first transducer configured for generating a first signal induced by the conductive target and indicative for the position of the hybrid target; a second transducer, at least partially overlapping with the first transducer, and configured for generating a second signal induced by the magnet configuration and indicative for the position of the hybrid target; a processing device configured for receiving the first signal to determine a first position of the hybrid target and for receiving the second signal to determine a second position of the hybrid target and for determining reliability of the position sensor based on the determined first and second position.
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公开(公告)号：US11982547B2
公开(公告)日：2024-05-14
申请号：US18162263
申请日：2023-01-31
Applicant: Melexis Technologies SA
Inventor： Gael Close , Eric Lahaye , Lionel Tombez
CPC classification number: G01D5/145 , G01D5/24438 , G01P3/44
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.
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公开(公告)号：US11668770B2
公开(公告)日：2023-06-06
申请号：US17122163
申请日：2020-12-15
Applicant: Melexis Technologies SA
Inventor： Gael Close , Samuel Huber Lindenberger
IPC: G01R33/038 , G01D5/14 , G01R33/07
CPC classification number: G01R33/038 , G01D5/145 , G01R33/07
Abstract: A position sensor system includes a magnetic source for generating a magnetic field, and a position sensor device movable relative to the magnetic source, or vice versa. The position sensor device comprises at least three magnetic sensor elements for measuring at least three magnetic field values of the magnetic field, and a processing circuit configured for determining at least two magnetic field gradients or magnetic field differences based on the at least three magnetic field values, and for deriving from the at least two magnetic field gradients or differences a first value indicative of a position of the position sensor device, and for deriving from the at least two magnetic field gradients or differences a second value indicative of integrity of the position sensor system.
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Patent Agency Ranking
公开(公告)号：US12078482B2
公开(公告)日：2024-09-03
申请号：US18099421
申请日：2023-01-20
Applicant: Melexis Technologies SA
Inventor： Gael Close , Lorenzo Lugani
Abstract: A hybrid position sensor for determining the position of a hybrid target includes a main transducer for obtaining a first signal indicative for a position of the hybrid target within a first range and with a first resolution using a first or second technology; a support transducer for obtaining a second signal indicative for the position of the hybrid target within a second range and with a second resolution using the second technology if the main transducer is using the first technology and vice versa, wherein the first range is smaller than the second and the first resolution is higher than the second, and wherein the first technology is magnet based and the second technology is an inductive technology; a combiner for combining the obtained first signal and second signal to determine the position of the hybrid target.
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公开(公告)号：US11719763B2
公开(公告)日：2023-08-08
申请号：US17876953
申请日：2022-07-29
Applicant: Melexis Technologies SA
Inventor： Gael Close , Arnaud Laville , Stefan Rigert , Samuel Huber Lindenberger
CPC classification number: G01R33/0017 , G01D5/142 , G01D18/00 , G01R33/0041 , G01R33/07 , G01R35/00
Abstract: The present invention relates to a field-sensor device comprising a reference field sensor providing a reference sensor signal in response to a field, a calibrated field sensor providing a calibrated sensor signal in response to the field, a reference circuit connected to the reference field sensor and adapted to receive a reference signal, and an adjustable circuit connected to the calibrated field sensor and adapted to receive a calibrated signal. When the adjustable circuit is adjusted with the calibrated signal, said calibrated signal being different from the reference signal, the calibrated field sensor provides a calibrated sensor signal substantially equal to the reference sensor signal. The field sensor device is arranged to be exposed, when in a calibration mode, to a uniform calibration field and, when in operational mode, to an operational field being a field gradient.
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公开(公告)号：US11614343B2
公开(公告)日：2023-03-28
申请号：US17544014
申请日：2021-12-07
Applicant: Melexis Technologies SA
Inventor： Christian Schott , Gael Close , Bruno Brajon
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.
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公开(公告)号：US11573074B2
公开(公告)日：2023-02-07
申请号：US17189789
申请日：2021-03-02
Applicant: Melexis Technologies SA
Inventor： Gael Close , Lorenzo Lugani
Abstract: A hybrid position sensor for determining the position of a hybrid target includes a main transducer for obtaining a first signal indicative for a position of the hybrid target within a first range and with a first resolution using a first or second technology; a support transducer for obtaining a second signal indicative for the position of the hybrid target within a second range and with a second resolution using the second technology if the main transducer is using the first technology and vice versa, wherein the first range is smaller than the second and the first resolution is higher than the second, and wherein the first technology is magnet based and the second technology is an inductive technology; a combiner for combining the obtained first signal and second signal to determine the position of the hybrid target.
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公开(公告)号：US11480631B2
公开(公告)日：2022-10-25
申请号：US15969053
申请日：2018-05-02
Applicant: Melexis Technologies SA
Inventor： Javier Bilbao de Mendizabal , Mathieu Poezart , Gael Close
Abstract: A method for detecting an error in a bridge sensor which is adapted for measuring a physical parameter. The method comprises biasing a first contact pair of the bridge sensor at least two times in a first direction and at least one time in a second direction opposite to the first direction; while biasing the first contact pair, measuring an output signal on a different contact pair of the bridge sensor, thus obtaining at least three output measurements which are representative for the physical parameter and which are separated by time intervals; combining the output measurements to obtain an output value which is indicative for an error in the bridge sensor, wherein the output measurements which are combined are only those output measurements which are measured when biasing the first contact pair.
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