公开(公告)号：US11506517B2

公开(公告)日：2022-11-22

申请号：US17395419

申请日：2021-08-05

Applicant: Infineon Technologies AG

Inventor： Udo Ausserlechner

IPC: G01D5/14 ,  G01D5/20 ,  G01R33/02 ,  G01R33/07 ,  G01B7/14 ,  G01B7/30 ,  G01D5/244

Abstract: A magnetic angular position sensor system is described herein, which includes a shaft rotatable around a rotation axis, the shaft having a soft magnetic shaft end portion. The system further includes a sensor chip spaced apart from the shaft end portion in an axial direction and defining a sensor plane, which is substantially perpendicular to the rotation axis. At least four magnetic field sensor elements are integrated in the sensor chip, with two of the magnetic field sensor elements being spaced apart from each other and are sensitive to magnetic field components in a first direction and wherein two of the magnetic field sensor elements are spaced apart from each other and are only sensitive to magnetic field components in a second direction, whereby the first and the second direction are mutually non-parallel and the first and the second direction being perpendicular to the rotation axis.

公开(公告)号：US11500041B2

公开(公告)日：2022-11-15

申请号：US17063099

申请日：2020-10-05

Applicant: GLOBALFOUNDRIES Singapore Pte. Ltd.

Inventor： Yongshun Sun ,  Eng Huat Toh ,  Ping Zheng

IPC: G01R33/07 ,  G01R33/00

Abstract: The present disclosure relates to semiconductor structures and, more particularly, to 3-contact hall sensors and methods of manufacture and modes of operation. The structure includes: a plurality of sensing blocks each of which include a plurality of contacts; a first switching element connecting to a first set of sensing blocks of the plurality of sensing blocks; and a second switching element connecting to a second set of sensing blocks of the plurality of sensing blocks.

公开(公告)号：US11500040B2

公开(公告)日：2022-11-15

申请号：US16906166

申请日：2020-06-19

Applicant: STEERING SOLUTIONS IP HOLDING CORPORATION

Inventor： Jared K. Moore ,  Clane J. Cammin ,  Keith A. Kidder

IPC: G01R33/00 ,  G01R33/025 ,  G01R33/07 ,  G01B7/14 ,  G01B7/30 ,  G01D5/16 ,  B62D6/10 ,  B62D5/04

Abstract: A method for steering torque sensor stray magnetic field cancellation includes receiving, from at least one magnetic sensor disposed within a torque sensing region, a detected magnetic field corresponding to an angular displacement between an upper steering shaft and a lower steering shaft of an electronic power steering system. The method also includes generating a first torque signal based on the detected magnetic field and receiving, from at least one stray region sensor disposed outside of the torque sensing region, a detected stray magnetic field. The method also includes determining a torque signal error based on the detected stray magnetic field and generating a second torque signal based on the first torque signal and the torque signal error. The method also includes selectively controlling at least a portion of the electronic power steering system using the second torque signal.

公开(公告)号：US11482665B2

公开(公告)日：2022-10-25

申请号：US16807813

申请日：2020-03-03

Applicant: ABLIC Inc.

Inventor： Yohei Ogawa ,  Hirotaka Uemura

IPC: H01L43/06 ,  G01R33/07 ,  H01L43/04

Abstract: A semiconductor device includes a semiconductor substrate: a vertical Hall element formed in the semiconductor substrate, and having a magnetosensitive portion; a first excitation wiring disposed above the magnetosensitive portion, and configured to apply a first calibration magnetic field (M1) to the magnetosensitive portion; and second excitation wirings disposed above the magnetosensitive portion on one side and on another side of the first excitation wiring, respectively, along the first excitation wiring as viewed in plan view from immediately above a front surface of the semiconductor substrate, and configured to apply second calibration magnetic fields (M2) to the magnetosensitive portion.

公开(公告)号：US11480591B2

公开(公告)日：2022-10-25

申请号：US16241111

申请日：2019-01-07

Applicant: Melexis Technologies SA

Inventor： Javier Bilbao De Mendizabal ,  Simon Houis

IPC: G01R19/00 ,  G01R15/20 ,  G01R33/00 ,  G01R33/07 ,  G01R33/09

Abstract: A current-sensor structure comprises a conductor for conducting electrical current in a current direction. The conductor has one or more conductor surfaces and an edge. 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. The current sensor is aligned with the edge of the conductor or the conductor has a width W and the current sensor is within a distance of W/2.5, W/3, W/4, W/5 or W/6 of the conductor edge. The current-sensor structure can comprise a substrate on which the conductor is disposed.

公开(公告)号：US20220326316A1

公开(公告)日：2022-10-13

申请号：US17640406

申请日：2020-08-14

Applicant: OGAWA, Yutaka

Inventor： Yutaka OGAWA

IPC: G01R33/025 ,  G01R33/07 ,  G01R33/09

Abstract: A magnetic detection device that comprises an amplification circuit amplifying a detection signal from a magnetic sensor that is positioned, for example, in a location where an alternating current magnetic field enters as noise, and detects an alternating current magnetic field targeted for monitoring, said magnetic detection device further comprising: timer circuits that are activated in response to a change in the output of the amplification circuit, and if these clock a prescribed time, the outputs thereof change; a logic circuit that treats the outputs of the timer circuits as inputs; and an oscillation circuit for generating an operation clock signal for the timer circuits. The timer circuits are structured such that if the output of the amplification circuit changes to a different direction before the clocking of the prescribed time is complete, the timer circuits are reset.

公开(公告)号：US20220290967A1

公开(公告)日：2022-09-15

申请号：US17197529

申请日：2021-03-10

Applicant: Roger Dale REEVES

Inventor： Roger Dale REEVES

IPC: G01B7/06 ,  G01R33/07 ,  G01N29/27

Abstract: A flaw detection apparatus for use with a tubular has a helixing conveyor adapted to receive the tubular thereon, a frame positioned over a center section of the helixing conveyor, and a plurality of inspection devices retained by the frame so as to detect flaws in the tubular as said helixing conveyor moves the tubular through the frame. The helixing conveyor has a plurality of sets of rollers that are angularly adjustable relative to a longitudinal axis of the helixing conveyor. The plurality of inspection devices include a longitudinal inspection device, a Hall Effect wall thickness inspection device, an oblique inspection device, a transverse inspection device, and a grade verification/comparator device.

公开(公告)号：US20220282970A1

公开(公告)日：2022-09-08

申请号：US17671112

申请日：2022-02-14

Applicant: JEFFERSON SCIENCE ASSOCIATES, LLC

Inventor： BOGDAN WOJTSEKHOWSKI ,  GUY RON

IPC: G01C17/32 ,  G01R33/07

Abstract: A high precision magnetic compass based on a Hall probe. The probe is oriented at an angle of 90 degrees to the rotation axis of the device. An oscillating component of the signal from the probe, synchronized with the device rotation, is transferred to the non-rotation frame and is used to align the axis of rotation to be parallel to the magnetic field. The device does not require prior calibration. It is insensitive to drift of the probe parameters and can provide an angle with precision equal to or better than a 0.05 degree.

公开(公告)号：US20220281749A1

公开(公告)日：2022-09-08

申请号：US17314873

申请日：2021-05-07

Applicant: California Institute of Technology

Inventor： Nai-Chang Yeh ,  Chen-Chih Hsu ,  Jiaqing Wang ,  Marcus L. Teague

IPC: C01B32/186 ,  H01L43/06 ,  H01L43/04 ,  H01L29/16 ,  G01R33/07

Abstract: A strain engineered material including a monolayer graphene sheet comprising an array of wrinkles induced by deformations in the graphene sheet, the deformations formed by a lattice of underlying nanostructures on a substrate. The lattice of nanostructures comprises rows of the nanostructures and each of the wrinkles comprise a ridge aligned on top of a different one of the rows and along an alignment direction defined by the rows. The deformations pattern a strain distribution in the graphene sheet that induces a periodically varying pseudo magnetic field distribution ranging between a positive value and a negative values, The periodically varying pseudo magnetic field distribution has field magnitude minima located parallel to and between the ridges and field magnitude maxima located near to and parallel to each of the ridges and can be designed for various valleytronic and spintronic device applications.

公开(公告)号：US11437211B2

公开(公告)日：2022-09-06

申请号：US17010122

申请日：2020-09-02

Applicant: Atom Power, Inc.

Inventor： Binesh Kumar ,  Davide Leoni ,  Michael J. Harris ,  Denis Kouroussis

IPC: H02H7/08 ,  H01H71/12 ,  G01R33/00 ,  G01R33/07

Abstract: A solid-state circuit breaker (SSCB) with self-diagnostic, self-maintenance, and self-protection capabilities includes: a power semiconductor device; an air gap disconnect unit connected in series with the power semiconductor device; a sense and drive circuit that switches the power semiconductor device OFF upon detecting a short circuit or overload of unacceptably long duration; and a microcontroller unit (MCU) that triggers the air gap disconnect unit to form an air gap and galvanically isolate an attached load, after the sense and drive circuit switches the power semiconductor device OFF. The MCU is further configured to monitor the operability of the air gap disconnect unit, the power semiconductor device, and other critical components of the SSCB and, when applicable, take corrective actions to prevent the SSCB and the connected load from being damaged or destroyed and/or to protect persons and the environment from being exposed to hazardous electrical conditions.