公开(公告)号：US20240011799A1

公开(公告)日：2024-01-11

申请号：US18252306

申请日：2021-11-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuki OHYAMA ,  Kazuhiro KANDA ,  Masahiko OHBAYASHI ,  Hideyuki TANIGAWA ,  Masataka TAGAWA

IPC: G01D5/16

CPC classification number: G01D5/16

Abstract: In a magnetic sensor according to the present disclosure, each of a plurality of magnetoresistance pattern portions includes a first resistance portion and a second resistance portion that are connected together in series. One of two resistance portions connects a first wiring portion and a second wiring portion of a first wiring pattern portion. The other of the two resistance portions connects a first wiring portion and a second wiring portion of a second wiring pattern portion. The two resistance portions are included in the plurality of first resistance portions and the plurality of second resistance portions and located at both ends in a first direction.

公开(公告)号：US20250102329A1

公开(公告)日：2025-03-27

申请号：US18832854

申请日：2023-01-26

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Hideyuki TANIGAWA

IPC: G01D5/245 ,  G01D18/00

Abstract: A magnetic scale is disposed alongside of a magnetic sensor in a first direction and moves relative to the magnetic sensor in a second direction intersecting with the first direction. A moving distance transformer receives an output signal of the magnetic sensor and transforms the output signal into moving distance information. A controller receives the moving distance from the transformer and gives a movement instruction to either the magnetic sensor or the magnetic scale. The moving distance transformer includes a hysteresis corrector. The controller provides the hysteresis corrector with moving direction information about the magnetic sensor. The hysteresis corrector transforms the output signal into the moving distance information by making hysteresis correction to the output signal based on the moving direction information.

公开(公告)号：US20230413686A1

公开(公告)日：2023-12-21

申请号：US18252311

申请日：2021-11-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuki OHYAMA ,  Kazuhiro KANDA ,  Masahiko OHBAYASHI ,  Hideyuki TANIGAWA ,  Masataka TAGAWA

IPC: H10N50/85 ,  G01B7/004 ,  G01R33/09 ,  H10N50/10

CPC classification number: H10N50/85 ,  G01B7/004 ,  G01R33/091 ,  H10N50/10 ,  G01R33/093 ,  H10N50/01

Abstract: A magnetic sensor according to the present disclosure includes a plurality of magnetoresistance pattern portions that forms a bridge circuit. The plurality of magnetoresistance pattern portions are arranged side by side in a first direction. Each of the plurality of magnetoresistance pattern portions is formed in a second direction perpendicular to the first direction. Each of the plurality of magnetoresistance pattern portions is formed in a meandering shape when viewed in a third direction perpendicular to both the first direction and the second direction. Centroids of the plurality of magnetoresistance pattern portions are located on a centerline of the plurality of magnetoresistance pattern portions in the second direction when viewed in the third direction.

公开(公告)号：US20240003990A1

公开(公告)日：2024-01-04

申请号：US18252151

申请日：2021-11-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuhiro KANDA ,  Masahiko OHBAYASHI ,  Yuki OHYAMA ,  Hideyuki TANIGAWA ,  Masataka TAGAWA

IPC: G01R33/00 ,  G01R33/09

CPC classification number: G01R33/0052 ,  G01R33/093 ,  G01R33/0005

Abstract: A magnetic sensor according to the present disclosure includes a supporting substrate, a glazing layer, and a magnetoresistive layer. The glazing layer is formed on the supporting substrate. The magnetoresistive layer is formed on the glazing layer. When viewed in plan in a thickness direction defined for the supporting substrate, an outer edge of the magnetoresistive layer is located inside an outer edge of the supporting substrate.

公开(公告)号：US20240003711A1

公开(公告)日：2024-01-04

申请号：US18252150

申请日：2021-11-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuhiro KANDA ,  Masahiko OHBAYASHI ,  Yuki OHYAMA ,  Hideyuki TANIGAWA ,  Masataka TAGAWA

IPC: G01D5/16

CPC classification number: G01D5/16

Abstract: A magnetic sensor according to the present disclosure includes a plurality of magnetoresistance pattern portions that forms a bridge circuit. Each of the plurality of magnetoresistance pattern portions includes a first resistance portion and a second resistance portion that are connected together in series. In each of the plurality of magnetoresistance pattern portions, the first resistance portion and the second resistance portion are spaced from each other in a first direction by a distance that is one half as long as a cycle of magnetization of a detection target. In each of the plurality of magnetoresistance pattern portions, the first resistance portion and the second resistance portion are symmetric to each other with respect to a line when viewed in plan in a third direction.