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公开(公告)号：US12104931B2
公开(公告)日：2024-10-01
申请号：US17203039
申请日：2021-03-16
发明人： Lorenzo Lugani
CPC分类号： G01D5/2073 , G01B7/30
摘要： A position sensor for determining the position of a conductive target using a transmit coil and a plurality of receive coils. The receive coils may each include two strands and a strand may be obtained from a conversion of a substantially sinusoidal primitive function. The position sensor may realize a reduction of harmonics in signals from the receive coils.
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公开(公告)号：US20240318984A1
公开(公告)日：2024-09-26
申请号：US18607913
申请日：2024-03-18
发明人： Lorenzo LUGANI
CPC分类号： G01D5/2053 , H01F27/36 , H01F38/14
摘要： An inductive angle sensor includes a transmitter coil and an excitation circuit; a first set of receiver coils has a geometry with a first periodicity N; a first movable coupling element has a periodic geometry with said first periodicity N; a second set of receiver coils has a geometry with a second periodicity M smaller than the first periodicity N; a second movable coupling element having a periodic geometry with said second periodicity M; wherein a ratio N/M of the first periodicity N and the second periodicity M is equal to 1.5. A torque sensor includes an inductive angle sensor and a torque bar. A printed circuit board includes the plurality of coils.
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公开(公告)号：US20240302187A1
公开(公告)日：2024-09-12
申请号：US18654250
申请日：2024-05-03
发明人： Christian SCHOTT , Gael CLOSE , Bruno BRAJON
CPC分类号： G01D5/145 , G01D5/244 , G01R33/091
摘要： 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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4.发明公开公开(公告)号：US20240224815A1
公开(公告)日：2024-07-04
申请号：US18392467
申请日：2023-12-21
发明人： Guido DUPONT , Daniel ROSENFELD , Lionel TOMBEZ , Appo VAN DER WIEL , Gael CLOSE
CPC分类号： H10N52/80 , G01R33/0011 , G01R33/07 , H10N50/80 , H10N52/01 , H10N52/101 , H10N59/00
摘要： 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.
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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
发明人： Gael Close , Eric Lahaye , Lionel Tombez
CPC分类号： G01D5/145 , G01D5/24438 , G01P3/44
摘要： 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：US20240003940A1
公开(公告)日：2024-01-04
申请号：US18467942
申请日：2023-09-15
发明人： Lucian BARBUT , Simon HOUIS , Lionel TOMBEZ , Tim VANGERVEN
CPC分类号： G01R15/202 , G01R15/205 , H05K2201/10151 , H05K1/181 , H05K1/0213
摘要： A current sensor system has a conductor and a packaged integrated circuit for sensing a current in the conductor. The conductor is external to the packaged integrated circuit. The packaged integrated circuit includes a substrate having an active surface and a back surface; one or more magnetic sensing elements; a processing circuit arranged to process signals received from the one or more magnetic sensing elements to derive an output signal indicative of a sensed current in the conductor; a housing; a plurality of leads; electrical connections between the leads and the active surface. The back surface of the substrate is disposed on a support formed by at least two inner lead portions of the plurality of leads and the active side of the substrate is oriented towards the outer ends of the outer lead portions of the leads in a direction perpendicular to a plane defined by the support.
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7.发明公开公开(公告)号：US20230422632A1
公开(公告)日：2023-12-28
申请号：US18461923
申请日：2023-09-06
发明人： Appo VAN DER WIEL , Yves BIDAUX , Lionel TOMBEZ
CPC分类号： H10N52/101 , G01R33/072 , H10N50/80
摘要： A method of producing a semiconductor substrate comprising at least one integrated magnetic flux concentrator, comprising the steps of: a) providing a semiconductor substrate having an upper surface; b) making at least one cavity in said upper surface; c) depositing one or more layers of one or more materials, including sputtering at least one layer of a soft magnetic material; d) removing substantially all of the soft magnetic material that is situated outside of the at least one cavity, while leaving at least a portion of the soft magnetic material that is inside said at least one cavity. A semiconductor substrate comprising at least one integrated magnetic flux concentrator. A sensor device or a sensor system, a current sensor device or system, a position sensor device or system, a proximity sensor device or system, an integrated transformer device or system.
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公开(公告)号：US11846687B2
公开(公告)日：2023-12-19
申请号：US18147170
申请日：2022-12-28
发明人： Nicolas Dupre , Yves Bidaux
IPC分类号： G01R33/07 , G01R33/022 , G01R33/00
CPC分类号： G01R33/022 , G01R33/0082 , G01R33/07
摘要： 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：US20230371401A1
公开(公告)日：2023-11-16
申请号：US18351797
申请日：2023-07-13
发明人： Arnaud LAVILLE , Eric LAHAYE , Jian CHEN
IPC分类号： H10N52/80 , G01R33/07 , H01L23/495 , H01L25/065 , H10N52/00
CPC分类号： H10N52/80 , G01R33/07 , H01L23/49541 , H01L23/49575 , H01L25/0657 , H10N52/101
摘要： A sensor device comprising: a lead frame; a first/second semiconductor die having a first/second sensor structure at a first/second sensor location, and a plurality of first/second bond pads electrically connected to the lead frame; the semiconductor dies having a square or rectangular shape with a geometric center; the sensor locations are offset from the geometrical centers; the second die is stacked on top of the first die, and is rotated by a non-zero angle and optionally also offset or shifted with respect to the first die, such that a perpendicular projection of the first and second sensor location coincide.
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公开(公告)号：US11815533B2
公开(公告)日：2023-11-14
申请号：US17479181
申请日：2021-09-20
发明人： Simon Houis
IPC分类号： G01R19/00 , G01R15/14 , G01R33/022
CPC分类号： G01R19/0007 , G01R15/148 , G01R33/022
摘要： A current sensor system for accurately measuring an AC electrical current having frequencies up to 2 kHz, the system comprising: an electrical conductor (e.g. busbar) for conducting said AC current thereby creating a first magnetic field; a magnetic sensor device for measuring a magnetic field component or gradient; an object (e.g. a metal plate) having an electrically conductive surface arranged in the vicinity of said conductor for allowing eddy currents to flow in said surface, thereby creating a second magnetic field which is superimposed with the first magnetic field; wherein the magnetic sensor device is configured for determining the current as a signal or value proportional to the measured component or gradient. The metal plate may have an opening. The current sensor system may further comprise a shielding.
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