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    MAGNETIC SENSOR DEVICES, SYSTEMS AND METHODS, AND A FORCE SENSOR
    1.
    发明申请
    MAGNETIC SENSOR DEVICES, SYSTEMS AND METHODS, AND A FORCE SENSOR 有权

    公开(公告)号：US20240385058A1

    公开(公告)日：2024-11-21

    申请号：US18689759

    申请日：2022-09-08

    Applicant: MELEXIS TECHNOLOGIES SA

    Inventor： Gael CLOSE ,  Nicolas DUPRE ,  Théo LE SIGNOR

    IPC: G01L1/12 ,  G01D5/14

    Abstract: A magnetic sensor system includes: an integrated circuit having a semiconductor substrate, which 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 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 employ features of the magnetic sensor system.

    POSITION SENSOR DEVICES, METHODS AND SYSTEMS BASED ON MAGNETIC FIELD GRADIENTS
    2.
    发明申请
    POSITION SENSOR DEVICES, METHODS AND SYSTEMS BASED ON MAGNETIC FIELD GRADIENTS 有权

    公开(公告)号：US20210293580A1

    公开(公告)日：2021-09-23

    申请号：US17207301

    申请日：2021-03-19

    Applicant: Melexis Technologies SA

    Inventor： Nicolas DUPRE ,  Yves BIDAUX

    IPC: G01D5/14 ,  G01K13/00 ,  G01L5/00 ,  G01B7/30

    Abstract: A method of determining a linear or angular position of a magnetic sensor device relative to a magnetic source, or vice versa, the sensor device includes at least four magnetic sensor elements. The method involves the steps of: a) determining a first magnetic field gradient; b) determining a second magnetic field gradient; c) determining a ratio of the first and second magnetic field gradient; d) converting the ratio into a position; while matching signal paths of the magnetic sensor elements so as to improve signal-to-noise.

    DEVICES AND METHODS FOR MEASURING A MAGNETIC FIELD GRADIENT
    4.
    发明申请
    DEVICES AND METHODS FOR MEASURING A MAGNETIC FIELD GRADIENT 有权

    公开(公告)号：US20210293901A1

    公开(公告)日：2021-09-23

    申请号：US17207290

    申请日：2021-03-19

    Applicant: Melexis Technologies SA

    Inventor： Nicolas DUPRE ,  Yves BIDAUX

    IPC: G01R33/022 ,  G01R33/07 ,  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.

    DEVICE AND METHOD FOR DETERMINING AN ORIENTATION OF A MAGNET, AND A JOYSTICK
    6.
    发明公开
    DEVICE AND METHOD FOR DETERMINING AN ORIENTATION OF A MAGNET, AND A JOYSTICK 审中-公开

    公开(公告)号：US20240168109A1

    公开(公告)日：2024-05-23

    申请号：US18425740

    申请日：2024-01-29

    Applicant: Melexis Technologies SA

    Inventor： Gael CLOSE ,  Nicolas DUPRE ,  Jean-Claude DEPOORTER ,  Yves BIDAUX

    IPC: G01R33/10 ,  G05G9/047

    CPC classification number: G01R33/10 ,  G05G9/047

    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.

    ASSEMBLY OF INTEGRATED SOFT FORCE SENSOR
    9.
    发明公开
    ASSEMBLY OF INTEGRATED SOFT FORCE SENSOR 审中-公开

    公开(公告)号：US20240094071A1

    公开(公告)日：2024-03-21

    申请号：US18466974

    申请日：2023-09-14

    Applicant: Melexis Technologies SA

    Inventor： Jeroen DIDDEN ,  Theo LE SIGNOR ,  Gael CLOSE ,  Nicolas DUPRE

    IPC: G01L1/12

    CPC classification number: G01L1/122

    Abstract: 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.

    MAGNETIC SENSOR DEVICES, SYSTEMS AND METHODS, AND A FORCE SENSOR
    10.
    发明申请
    MAGNETIC SENSOR DEVICES, SYSTEMS AND METHODS, AND A FORCE SENSOR 有权

    公开(公告)号：US20230070938A1

    公开(公告)日：2023-03-09

    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

    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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