公开(公告)号：US12072395B2

公开(公告)日：2024-08-27

申请号：US17408101

申请日：2021-08-20

Applicant: DENSO CORPORATION

Inventor： Ken Tanaka ,  Toshiro Suzuki ,  Shigetoshi Fukaya

IPC: G01R33/00 ,  B62D6/10 ,  G01L3/10 ,  G01L5/22 ,  G01R33/02 ,  G01R33/07

CPC classification number: G01R33/0047 ,  B62D6/10 ,  G01L3/101 ,  G01L5/221 ,  G01R33/0011 ,  G01R33/02 ,  G01R33/07

Abstract: A magnetic sensor includes a magnetic sensing device, a sensor housing and a pair of magnetic flux guide members. The sensor housing includes a base body and a flange. The base body holds the magnetic sensing device at one end portion of the base body. The flange is fixed to the base body and is configured to be placed in contact with a receiving wall that receives a first magnetic circuit portion and a second magnetic circuit portion. The flange is made of a material having a higher rigidity than the base body.

公开(公告)号：US20240202560A1

公开(公告)日：2024-06-20

申请号：US18286719

申请日：2022-04-13

Applicant: NEC CORPORATION ,  National Institute of Advanced Industrial Science and Technology ,  NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY

Inventor： Naoki TAKEUCHI ,  Nobuyuki YOSHIKAWA ,  Yoshihito HASHIMOTO ,  Tsuyoshi YAMAMOTO ,  Fuminori HIRAYAMA

IPC: G06N10/20 ,  G01R33/00 ,  G01R33/035 ,  H02M7/00

CPC classification number: G06N10/20 ,  G01R33/0011 ,  G01R33/035 ,  H02M7/003

Abstract: A magnetic flux bias circuit includes an input signal line to which an input signal indicating an applied magnetic flux using a digital value is input, a first current control line, a second current control line, and a third current control line to which a clock signal according to the input signal is input, a digital/analog conversion unit converting the input signal into an analog signal using a circuit including a quantum flux parametron circuit on the basis of the input signal input to the input signal line and the clock signal input to the first current control line, the second current control line, and the third current control line, and a magnetic flux application unit applying an applied magnetic flux to a controlled object on the basis of the analog signal output from the digital/analog conversion unit.

公开(公告)号：US20230258743A1

公开(公告)日：2023-08-17

申请号：US18009778

申请日：2021-05-27

Applicant: TDK Corporation

Inventor： Tomohiko SHIBUYA

IPC: G01R33/00 ,  G01R33/09

CPC classification number: G01R33/0094 ,  G01R33/0011 ,  G01R33/091

Abstract: A magnetic sensor array includes a plurality of magnetic sensors. The magnetic sensor includes a sensor housing body housing the sensor chip and first and second connection parts formed on the sensor housing body. The first connection part formed on one of adjacent magnetic sensors and the second connection part formed on the other one thereof are axially supported on each other to achieve mutual connection between the plurality of magnetic sensors. Thus, it is possible to vary the relative angle between two adjacent magnetic sensors with the first and second connection parts as an axis. This allows the plurality of magnetic sensors to be pressed perpendicularly against even a curved surface of an object to be measured, and the pressed state can be easily maintained.

公开(公告)号：US11698419B2

公开(公告)日：2023-07-11

申请号：US16862901

申请日：2020-04-30

Applicant: HI LLC

Inventor： Stephen Garber ,  Ethan Pratt ,  Jeffery Kang Gormley ,  Scott Michael Homan ,  Scott Jeremy Seidman ,  Dakota Blue Decker ,  Jamu Alford ,  Michael Henninger ,  Teague Lasser ,  Micah Ledbetter ,  Jerry Leung ,  Hooman Mohseni ,  Benjamin Siepser

IPC: G01R33/00 ,  G01R33/032 ,  A61B5/05 ,  G01R33/26 ,  A61B5/00 ,  G01R33/09 ,  H01F7/20 ,  H01F27/28 ,  H01F27/36 ,  H05K1/18 ,  A61B5/245 ,  G01R33/025

CPC classification number: G01R33/0082 ,  A61B5/0077 ,  A61B5/05 ,  A61B5/245 ,  A61B5/4064 ,  A61B5/6802 ,  A61B5/6803 ,  G01R33/007 ,  G01R33/0011 ,  G01R33/0017 ,  G01R33/0047 ,  G01R33/025 ,  G01R33/032 ,  G01R33/095 ,  G01R33/26 ,  H01F7/20 ,  H01F27/2804 ,  H01F27/36 ,  H05K1/18 ,  A61B2562/0223 ,  A61B2562/04 ,  A61B2562/18 ,  A61B2562/222 ,  A61B2562/227 ,  H01F27/2866 ,  H05K2201/10151

Abstract: An exemplary wearable sensor unit includes 1) a magnetometer comprising a vapor cell comprising an input window and containing an alkali metal, and a light source configured to output light that passes through the input window and into the vapor cell along a transit path, and 2) a temperature control circuit external to the vapor cell and configured to create a temperature gradient within the vapor cell, the temperature gradient configured to concentrate the alkali metal within the vapor cell away from the transit path of the light.

公开(公告)号：US11668766B2

公开(公告)日：2023-06-06

申请号：US16878967

申请日：2020-05-20

Applicant: Melexis Technologies SA

Inventor： Appolonius Jacobus Van Der Wiel

IPC: G01R33/00 ,  G01R33/02 ,  H01L23/528 ,  H01L23/58 ,  H01L23/522 ,  H01L43/04 ,  H01L43/06 ,  H01L43/14

CPC classification number: G01R33/0011 ,  G01R33/02 ,  H01L23/528 ,  H01L23/5226 ,  H01L23/58 ,  H01L43/04 ,  H01L43/065 ,  H01L43/14

Abstract: A magnetic flux concentrator (MFC) structure comprises a substrate, a first metal layer disposed on or over the substrate, and a second metal layer disposed on or over the first metal layer. Each metal layer comprises (i) a first wire layer comprising first wires conducting electrical signals, and (ii) a first dielectric layer disposed on the first wire layer. A magnetic flux concentrator is disposed at least partially in the first metal layer, in the second metal layer, or in both the first and the second metal layers. The structure can comprise an electronic circuit or a magnetic sensor with sensing plates. The structure can comprise a transformer or an electromagnet with suitable control circuits. The magnetic flux concentrator can comprise a metal stress-reduction layer in the first or second wire layers and a core formed by electroplating the stress-reduction layer.

公开(公告)号：US10060808B2

公开(公告)日：2018-08-28

申请号：US15497559

申请日：2017-04-26

Applicant: JTEKT CORPORATION

Inventor： Yuichi Toyama

IPC: G01L3/00 ,  G01L3/10 ,  G01R33/00

CPC classification number: G01L3/104 ,  G01R33/0011

Abstract: There is provided a torque detector configured such that a magnetic shield is fixed to a holder without the need for a component for fixation of the magnetic shield, and no backlash is caused between the magnetic shield and the holder after the magnetic shield is fixed to the holder. The torque detector has engagement grooves into which a magnetic shield is to be inserted when the magnetic shield is fitted onto outer peripheral surfaces of a first holder and a second holder. The magnetic shield has end portions to be inserted into the engagement grooves, and each of the end portions is provided with engaging members that are always engaged with inner surfaces of the engagement grooves, respectively, while being inserted into the engagement grooves, to restrict movement of the end portions in the counter-insertion direction.

公开(公告)号：US09964601B2

公开(公告)日：2018-05-08

申请号：US15025688

申请日：2014-09-29

Applicant: ASAHI KASEI MICRODEVICES CORPORATION

Inventor： Takahisa Shikama ,  Yoshinobu Fujimoto

IPC: G01R33/00 ,  H01L43/08 ,  H01L43/02 ,  H01L27/22 ,  G01R33/09 ,  G01R33/02

CPC classification number: G01R33/0011 ,  G01R33/0206 ,  G01R33/09 ,  G01R33/091 ,  G01R33/093 ,  H01L27/22 ,  H01L43/02 ,  H01L43/08

Abstract: The magnetic sensor includes a magnetic flux concentrator member having a length in a direction of a second axis, a first magnetic detector arranged on a negative side of a first axis from the magnetic flux concentrator member and on a positive side of the second axis from a midpoint of the magnetic flux concentrator member in a length direction, a second magnetic detector arranged on a positive side of the first axis from the magnetic flux concentrator member and on the positive side of the second axis from the midpoint of the magnetic flux concentrator member in the length direction, and a third magnetic detector arranged on the negative side of the first axis from the magnetic flux concentrator member and on a negative side of the second axis from the midpoint of the magnetic flux concentrator member in the length direction.

公开(公告)号：US20180005652A1

公开(公告)日：2018-01-04

申请号：US15709359

申请日：2017-09-19

Applicant: Western Digital Technologies, Inc.

Inventor： Norihiro Okawa ,  Koujiro Komagaki ,  Takahiro Ibusuki

IPC: G11B5/39 ,  G11B5/127

CPC classification number: G11B5/3912 ,  G01R33/0011 ,  G01R33/0017 ,  G01R33/0076 ,  G01R33/09 ,  G11B5/3932 ,  G11B5/3954 ,  G11B5/398

Abstract: A magnetic read head is provided, comprising a bottom magnetic shield, a first free magnetic layer, a second free magnetic layer, and a top magnetic shield, arranged from bottom to top in this order in a stacking direction from a leading side to a trailing side of the read head. A non-soft bias layer is positioned below the top magnetic shield and on a back side of the first and the second free magnetic layers. The top magnetic shield has a unidirectional anisotropy, the magnetic moments of the top and the bottom magnetic shields are canted relative to a plane of the first and the second free magnetic layers, and the top and the bottom magnetic shields are decoupled from the non-soft bias layer and not magnetically coupled to a soft bias layer.

公开(公告)号：US09841469B2

公开(公告)日：2017-12-12

申请号：US15006911

申请日：2016-01-26

Applicant: FREESCALE SEMICONDUCTOR, INC.

Inventor： Paige M. Holm ,  Lianjun Liu

IPC: G01R33/00 ,  G01R33/09 ,  G01R17/10

CPC classification number: G01R33/0005 ,  G01R17/10 ,  G01R33/0011 ,  G01R33/093 ,  G01R33/098

Abstract: A magnetic field sensor comprises a sensor bridge having multiple sensor legs. Each sensor leg includes magnetoresistive sense elements, each comprising a pinned layer having a reference magnetization parallel to a plane of the sensor and a sense layer having a sense magnetization. A permanent magnet layer spaced apart from the sense elements magnetically biases the sense magnetization into an out-of-plane direction that is non-perpendicular to the plane of the sensor. The sense magnetization of a portion of the sense elements is oriented in a first direction and the sense magnetization of a different portion of the sense elements is oriented in a second direction differing from the first direction to generate two unique bias field vectors of the sense layers which enables detection of the external magnetic field in a sensing direction that is perpendicular to the plane of the magnetic field sensor without inter-axis coupling of sensor response.

公开(公告)号：US20170336287A1

公开(公告)日：2017-11-23

申请号：US15488763

申请日：2017-04-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Sean R. Wagner ,  Thomas A. Perry ,  Scott W. Piper ,  Cheol W. Kim

IPC: G01M13/02 ,  G01D5/14 ,  G01R33/00 ,  F16H61/32

CPC classification number: G01M13/021 ,  F16H61/28 ,  F16H61/2815 ,  F16H61/36 ,  F16H2061/326 ,  F16H2063/423 ,  G01D5/145 ,  G01R33/0011

Abstract: A transmission range selection sensor includes a housing defining a bore extending along a central axis. A piston is slideably disposed within the bore. A magnet carrier is attached to and moveable with the piston. A magnet is supported by and moveable with the magnet carrier. A first magnetic sensor and a second magnetic sensor are supported by the housing and are spaced from each other along the central axis. A position of the magnet carrier along the central axis is determinable from a sensed magnetic flux from the first and second magnetic sensors. The sensor includes at least one magnetic flux concentrator attached to one of the magnet carrier or the housing. The flux concentrator is operable to concentrate the magnetic flux toward at least one of the first magnetic sensor or the second magnetic sensor depending upon a position of the magnet along the central axis.