Patents by Inventor Gael Close
Gael Close has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 12111185Abstract: 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.Type: GrantFiled: May 20, 2022Date of Patent: October 8, 2024Assignee: MELEXIS TECHNOLOGIES SAInventors: Nicolas Dupre, Lionel Tombez, Gael Close, Yves Bidaux, David Goyvaerts
-
Publication number: 20240302187Abstract: 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.Type: ApplicationFiled: May 3, 2024Publication date: September 12, 2024Inventors: Christian SCHOTT, Gael CLOSE, Bruno BRAJON
-
Patent number: 12078689Abstract: 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.Type: GrantFiled: June 13, 2023Date of Patent: September 3, 2024Assignee: MELEXIS TECHNOLOGIES SAInventors: Gael Close, Arnaud Laville, Stefan Rigert, Samuel Huber Lindenberger
-
Patent number: 12078482Abstract: 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.Type: GrantFiled: January 20, 2023Date of Patent: September 3, 2024Assignee: MELEXIS TECHNOLOGIES SAInventors: Gael Close, Lorenzo Lugani
-
Publication number: 20240255314Abstract: 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.Type: ApplicationFiled: April 9, 2024Publication date: August 1, 2024Inventors: Gael CLOSE, Eric LAHAYE, Lionel TOMBEZ
-
Publication number: 20240255313Abstract: 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.Type: ApplicationFiled: April 9, 2024Publication date: August 1, 2024Inventors: Gael CLOSE, Eric LAHAYE, Lionel TOMBEZ
-
Publication number: 20240224815Abstract: A semiconductor device includes a semiconductor substrate, having an excitation circuit for applying an excitation signal, and a soft-magnetic component for guiding magnetic flux lines. The soft-magnetic component is electrically connected to the excitation by at least two electrical contacts in the form of back contacts or side contacts. The substrate further includes at least one electromagnetic transducer operatively connected to the soft-magnetic component. The excitation circuit includes a modulator for providing a modulated signal to the soft-magnetic component to modulate its magnetic permeability. The substrate further has a demodulator configured to demodulate signals obtained from the at least one electromagnetic transducer.Type: ApplicationFiled: December 21, 2023Publication date: July 4, 2024Inventors: Guido DUPONT, Daniel ROSENFELD, Lionel TOMBEZ, Appo VAN DER WIEL, Gael CLOSE
-
Patent number: 12007255Abstract: 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.Type: GrantFiled: March 17, 2023Date of Patent: June 11, 2024Assignee: MELEXIS TECHNOLOGIES SAInventors: Christian Schott, Gael Close, Bruno Brajon
-
Publication number: 20240168109Abstract: A method of determining an orientation ?,? 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 ? based on at least one of the magnetic field gradients; c) determining a second angle ? 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.Type: ApplicationFiled: January 29, 2024Publication date: May 23, 2024Inventors: Gael CLOSE, Nicolas DUPRE, Jean-Claude DEPOORTER, Yves BIDAUX
-
Patent number: 11982547Abstract: 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.Type: GrantFiled: January 31, 2023Date of Patent: May 14, 2024Assignee: MELEXIS TECHNOLOGIES SAInventors: Gael Close, Eric Lahaye, Lionel Tombez
-
Publication number: 20240094071Abstract: A method of manufacture of a force sensor and a force sensor is provided. The force sensor can be used to measure contact forces. The force sensor includes a substrate with an electromagnetic sensing element for contactless sensing of a field formed by a target. The target is included in a flexible piece which receives the force, and can deform by it. The flexible piece is treated so that the force sensor is reliable and has long durability.Type: ApplicationFiled: September 14, 2023Publication date: March 21, 2024Inventors: Jeroen DIDDEN, Theo LE SIGNOR, Gael CLOSE, Nicolas DUPRE
-
Patent number: 11921173Abstract: A method of determining an orientation ?,? 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 ? based on at least one of the magnetic field gradients; c) determining a second angle ? 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.Type: GrantFiled: June 13, 2022Date of Patent: March 5, 2024Inventors: Gael Close, Nicolas Dupre, Jean-Claude Depoorter, Yves Bidaux
-
Publication number: 20240060838Abstract: 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.Type: ApplicationFiled: August 22, 2023Publication date: February 22, 2024Inventors: Appo VAN DER WIEL, Lucian BARBUT, Bruno BRAJON, Gael CLOSE, Enrico GASPARIN
-
Patent number: 11852507Abstract: 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.Type: GrantFiled: December 28, 2022Date of Patent: December 26, 2023Assignee: MELEXIS TECHNOLOGIES SAInventors: Lionel Tombez, Yves Bidaux, Gael Close
-
Publication number: 20230393002Abstract: 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.Type: ApplicationFiled: June 2, 2023Publication date: December 7, 2023Inventors: Theo LE SIGNOR, Gael CLOSE, Nicolas DUPRE
-
Publication number: 20230341479Abstract: 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.Type: ApplicationFiled: June 13, 2023Publication date: October 26, 2023Inventors: Gael CLOSE, Arnaud LAVILLE, Stefan RIGERT, Samuel HUBER LINDENBERGER
-
Patent number: 11797043Abstract: 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.Type: GrantFiled: September 8, 2022Date of Patent: October 24, 2023Assignee: MELEXIS TECHNOLOGIES SAInventors: Gael Close, Nicolas Dupre, Théo Le Signor
-
Patent number: 11788866Abstract: 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.Type: GrantFiled: December 28, 2022Date of Patent: October 17, 2023Assignee: MELEXIS TECHNOLOGIES SAInventors: Lionel Tombez, Yves Bidaux, Gael Close
-
Publication number: 20230251332Abstract: 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.Type: ApplicationFiled: April 21, 2023Publication date: August 10, 2023Inventors: Gael CLOSE, Samuel HUBER LINDENBERGER
-
Patent number: 11719763Abstract: 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.Type: GrantFiled: July 29, 2022Date of Patent: August 8, 2023Assignee: MELEXIS TECHNOLOGIES SAInventors: Gael Close, Arnaud Laville, Stefan Rigert, Samuel Huber Lindenberger