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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
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：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.
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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
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.
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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.
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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
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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Patent Agency Ranking
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
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：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.
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公开(公告)号：US11525701B2
公开(公告)日：2022-12-13
申请号：US17190225
申请日：2021-03-02
Applicant: Melexis Technologies SA
Inventor： Lorenzo Lugani , Wolfram Kluge
Abstract: The present invention relates to an inductive position sensor configured to determine a position of a target device. The inductive position sensor comprises at least two coils for determining the position. At least two of the at least two coils for determining the position at least partially overlap. At least one coil of the at least two at least partially overlapping coils is a transmitter coil and at least one of the at least two coils is a receiver coil. At least one of the at least two coils has N2+R portions substantially equally distributed over N substantially parallel planes, N being an integer larger than or equal to two and R an integer larger than or equal to zero. For each of the at least two coils the portions distributed over the N substantially parallel planes are substantially identical, so that mutual inductance between the at least two coils is substantially unaffected by misalignments between the N substantially parallel planes.
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公开(公告)号：US20220365147A1
公开(公告)日：2022-11-17
申请号：US17876953
申请日：2022-07-29
Applicant: Melexis Technologies SA
Inventor： Gael CLOSE , Arnaud LAVILLE , Stefan RIGERT , Samuel HUBER LINDENBERGER
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：US11480590B2
公开(公告)日：2022-10-25
申请号：US16241059
申请日：2019-01-07
Applicant: Melexis Technologies SA
Inventor： Robert Racz , Amalia Spataru , Simon Houis , Bruno Boury , Javier Bilbao De Mendizabal
Abstract: The present invention relates to a current-sensor structure comprising a conductor for conducting electrical current in a current direction. The conductor has one or more conductor surfaces. At least one current sensor is disposed on, over, adjacent to or in contact with the conductor and is offset from a centre of the conductor in an offset direction orthogonal to the current direction and optionally parallel to a conductor surface. The current-sensor structure can comprise a substrate on which the conductor is disposed. The current sensor can be located on a side of the conductor opposite or orthogonal to a surface of the substrate. The current sensor can be aligned with, near to or adjacent to an edge of the conductor. The current-sensor structure can comprise a shield, such as a U-shaped laminated shield that at least partially surrounds the conductor and the current sensor.
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