公开(公告)号：US12085628B2

公开(公告)日：2024-09-10

申请号：US17774791

申请日：2020-11-05

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hideaki Fujiura ,  Yoshiyuki Saito

IPC: G01R33/09

CPC classification number: G01R33/09

Abstract: A signal processing method according to the present disclosure is for use in a signal processing system including a first magnetic detection unit, a second magnetic detection unit, and a processing unit. The signal processing method includes an angle calculating step and a failure diagnosis step. The angle calculating step includes transforming, by using an inverse trigonometric function, a sine signal, a cosine signal, and a tangent signal into a first angle signal, a second angle signal, and a third angle signal, respectively. The failure diagnosis step includes making a failure diagnosis of the first magnetic detection unit and the second magnetic detection unit by comparing with each other two or more pieces of angle information selected from first angle information, second angle information, and third angle information.

公开(公告)号：US10571298B2

公开(公告)日：2020-02-25

申请号：US16071118

申请日：2017-03-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takuya Tomida ,  Takeshi Uemura ,  Hideaki Fujiura ,  Ryo Osabe

IPC: G01D5/14 ,  G01D5/16 ,  G01B7/30 ,  B62D15/02 ,  G01R15/20 ,  G01R33/07 ,  G01R33/09 ,  G01R35/00 ,  G01R33/02 ,  G01D5/12 ,  G01R33/06

Abstract: A rotation detecting device includes first to fourth magneto-resistive elements that are provided on a first substrate to constitute a bridge circuit, a detection circuit provided on a second substrate, first to fourth wirings each connecting between the detection circuit and respective one of ends of the first to fourth magneto-resistive elements, first to fourth nodes provided on the second substrate, and first and second amplifiers provided on the second substrate. The first node combines signals on the first and second wirings. The second node combines signals on the third and fourth wirings. The first and second amplifiers amplify signals at the first and second nodes, respectively.

公开(公告)号：US12044529B2

公开(公告)日：2024-07-23

申请号：US17439365

申请日：2020-02-19

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryo Osabe ,  Hideaki Fujiura ,  Yoshiyuki Saito

IPC: G01B7/30 ,  G01D5/16

CPC classification number: G01B7/30 ,  G01D5/16

Abstract: The problem to be overcome by the present disclosure is to reduce harmonic components included in output signals. A magnetic sensor includes a detecting magnetoresistance element and a canceling magnetoresistance element. A tilt angle formed by a magnetic sensing direction of the canceling magnetoresistance element with respect to a magnetic sensing direction of the detecting magnetoresistance element falls within a predetermined range. The predetermined range is defined by reference to either n×α/3 or n×α/3+α/2, where α is an angle of rotation of a rotator corresponding to one cycle of a fundamental harmonic included in output signals of the detecting magnetoresistance element and n is a natural number equal to or greater than 1.

公开(公告)号：US10890464B2

公开(公告)日：2021-01-12

申请号：US16071134

申请日：2017-03-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ryo Osabe ,  Hideaki Fujiura ,  Takeshi Uemura ,  Takuya Tomida

IPC: G01D5/14 ,  G01D5/16 ,  G01B7/30 ,  B62D15/02 ,  G01R15/20 ,  G01R33/07 ,  G01R33/09 ,  G01R35/00 ,  G01R33/02 ,  G01D5/12 ,  G01R33/06

Abstract: A rotation detecting device includes first and second magnetic detection elements that output first and second signals and a detection circuit having the first and second signals input thereto. The detection circuit includes an automatic correction circuit that performs generating and updating of a correction value for correcting the and second signals. The automatic correction circuit is configured to stop the generating or the updating of the correction value in at least one of a case where a rotation direction of an object is changed to a reverse rotation direction from a normal rotation direction and a case where a rotation direction of the object is changed to the normal rotation direction from the reverse rotation direction.

公开(公告)号：US10935396B2

公开(公告)日：2021-03-02

申请号：US16748491

申请日：2020-01-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takuya Tomida ,  Takeshi Uemura ,  Hideaki Fujiura ,  Ryo Osabe

IPC: G01D5/14 ,  G01D5/16 ,  G01B7/30 ,  B62D15/02 ,  G01R15/20 ,  G01R33/07 ,  G01R33/09 ,  G01R35/00 ,  G01R33/02 ,  G01D5/12 ,  G01R33/06

Abstract: A magnetic sensor includes a magneto-resistive element configured to output a signal and a detection circuit configured to receive the signal. The detection circuit includes a regulator configured to supply a potential to the magneto-resistive element, a first current path configured to electrically connect the magneto-resistive element to the regulator, a second current path, a switch, and a diagnostic circuit connected to the second current path. The second current path includes, and is configured to electrically connect the magneto-resistive element to the regulator via the resistor. The switch is configured to select one of the first current path and the second current path, and electrically connect the magneto-resistive element to the regulator via the selected one of the first current path and the second current path.

公开(公告)号：US10534013B2

公开(公告)日：2020-01-14

申请号：US15526333

申请日：2016-01-08

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuki Maegawa ,  Hideki Ueda ,  Hideaki Fujiura ,  Takeshi Uemura ,  Hiroshi Nakatsuka ,  Tsuyoshi Sakaue ,  Rie Okamoto ,  Shoya Kida

IPC: H05K5/00 ,  G01P1/02 ,  G01P15/125 ,  H05K5/02 ,  H05K5/03

Abstract: A sensor includes a sensor element, a package accommodating the sensor element in an inside of the package, a grounding electrode disposed in the package, a lid covering an opening of the package, and a lead extending from the package. The lead includes first and second portions. The first portion of the lead is electrically connected to the grounding electrode and extends along a side surface of the package with a gap provided between the first portion and the side surface. The second portion of the lead is disposed between the lid and the package and extends toward the inside of the package. In this sensor, the opening can be sealed without soldering and reliably connect the lid to the grounding electrode.

公开(公告)号：US09746326B2

公开(公告)日：2017-08-29

申请号：US14888443

申请日：2014-06-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takeshi Fujii ,  Takeshi Uemura ,  Hideaki Fujiura ,  Yasunobu Tsukio ,  Kenichi Yasaka

IPC: G01C19/5776 ,  G01C19/56

CPC classification number: G01C19/5776 ,  G01C19/56

Abstract: A driver apparatus includes a vibrator and a drive circuit configured to input a drive signal to the vibrator to vibrate the vibrator. The drive circuit includes an output amplifier configured to output the drive signal to the vibrator based on a monitor signal, a power supply unit configured to supply a power supply voltage, and a power supply voltage controller configured to control the power supply voltage and to supply the controlled power supply voltage to the output amplifies. This driver apparatus can increase amplitude of the vibration of the vibrator, and can increase detection sensitivity to a physical quantity detection apparatus including the driver apparatus.