公开(公告)号：US20220011086A1

公开(公告)日：2022-01-13

申请号：US17295425

申请日：2019-07-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KAZUHIRO ONAKA ,  KIYOTAKA YAMADA ,  NORITAKA ICHINOMIYA ,  SHIGEHIRO YOSHIUCHI

IPC: G01B7/30 ,  G01R33/09

Abstract: A magnetic sensor unit includes a magnet, a magnetic sensor facing a lower surface of the magnet, a magnetic shield surrounding the magnetic sensor in a lateral direction crossing up and down directions of the magnetic sensor, and a magnetic yoke covering an upper surface and a side surface of the magnet. The magnet includes a first magnetized region magnetized along the up and down direction, and a second magnetized region magnetized in a direction opposite to a direction of magnetization of the first magnetized region. The first and second magnetized regions have first and second magnetic poles provided on the lower surface of the magnet. A distance LA between a center of the first magnetic pole and a center of the second magnetic pole, a distance LB between the magnetic shield and the center of the first magnetic pole, a distance LC between the magnetic shield and the center of the second magnetic pole satisfy a relation of LA

公开(公告)号：US20180052208A1

公开(公告)日：2018-02-22

申请号：US15554427

申请日：2016-04-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KAZUHIRO ONAKA ,  NORITAKA ICHINOMIYA ,  SHIGEHIRO YOSHIUCHI ,  KIYOTAKA YAMADA

IPC: G01R33/00 ,  G01R33/09 ,  G01R33/07

CPC classification number: G01R33/0005 ,  G01D5/145 ,  G01R33/07 ,  G01R33/09

Abstract: A magnetic sensor includes a first magnetoresistive element that detects a magnetic field along a first detection axis, a second magnetoresistive element that detects a magnetic field along a second detection axis inclining at an angle of 45 degrees with respect to the first detection axis, a first Hall element that detects a magnetic field along a third detection axis, and a second Hall element that detects a magnetic field along a fourth detection axis perpendicular to the third detection axis. This magnetic sensor has both characteristics of the Hall elements and characteristics of the magnetoresistive elements, and has high accuracy and a small size.

公开(公告)号：US20170016745A1

公开(公告)日：2017-01-19

申请号：US15121021

申请日：2015-03-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KAZUHIRO ONAKA ,  NORITAKA ICHINOMIYA ,  KIYOTAKA YAMADA ,  SHIGEHIRO YOSHIUCHI

IPC: G01D5/16 ,  H01L43/08

CPC classification number: G01D5/16 ,  G01R33/09 ,  H01L43/08

Abstract: A magnetic sensor includes a substrate, a magnetoresistive element group, and a magnet group. The substrate has a first surface and a second surface opposite to the first surface. The magnetoresistive element group includes a first magnetoresistive element and a second magnetoresistive element. The first magnetoresistive element and the second magnetoresistive element are located on the first surface of the substrate. The magnet group includes a first magnet opposing the first magnetoresistive element and a second magnet opposing the second magnetoresistive element.

Abstract translation: 磁传感器包括基板，磁阻元件组和磁体组。 基板具有与第一表面相对的第一表面和第二表面。 磁阻元件组包括第一磁阻元件和第二磁阻元件。 第一磁阻元件和第二磁阻元件位于基板的第一表面上。 磁体组包括与第一磁阻元件相对的第一磁体和与第二磁阻元件相对的第二磁体。

公开(公告)号：US20190077256A1

公开(公告)日：2019-03-14

申请号：US16093741

申请日：2017-06-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KAZUHIRO ONAKA ,  SHIGEHIRO YOSHIUCHI ,  NORITAKA ICHINOMIYA ,  KIYOTAKA YAMADA

IPC: B60K20/02 ,  G01B7/30 ,  G01D5/245 ,  G01R33/09 ,  H01L43/06 ,  H01L43/08

CPC classification number: B60K20/02 ,  G01B7/30 ,  G01D5/145 ,  G01D5/245 ,  G01R33/02 ,  G01R33/09 ,  H01L27/22 ,  H01L43/06 ,  H01L43/065 ,  H01L43/08

Abstract: A magnetic sensor includes a magneto-resistive element, a Hall element, and a detection circuit that receives a signal from the magneto-resistive element and a signal from the Hall element input thereto. The detection circuit includes an output terminal and an interrupt generation unit. The output terminal outputs, to the outside as an output signal, a signal obtained by performing to the signal input from the magneto-resistive element, at least one processing selected from amplification, analog-to-digital conversion, offset correction, and temperature-characteristics correction. The interrupt generation unit outputs an interrupt signal when the signal input from the Hall element is larger than a predetermined threshold. The magnetic sensor is high accurate and highly reliable.

公开(公告)号：US20170242082A1

公开(公告)日：2017-08-24

申请号：US15300747

申请日：2015-09-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KIYOTAKA YAMADA ,  KAZUHIRO ONAKA ,  NORITAKA ICHINOMIYA

IPC: G01R33/09

CPC classification number: G01R33/091 ,  G01R33/09 ,  H01L43/02 ,  H01L43/08

Abstract: A magnetic sensor includes a board, a magnetoresistance element group including first and second magnetoresistance elements disposed on the board, and a magnet group including a first magnet corresponding to the first magnetoresistance element and a second magnet corresponding to the second magnetoresistance element. This magnetic sensor can have a small size and high accuracy.