Title:
POSITION DETECTION SYSTEM AND MAGNETIC SENSOR
Document Type and Number:
WIPO Patent Application WO/2024/009983
Kind Code:
A1
Abstract:
The present disclosure addresses the problem of improving the accuracy of position detection. This position detection system comprises: a coil and a magnet; a magnetic sensor (4); and a shield member (5). The coil and the magnet relatively move in a first direction due to magnetic interaction. The magnetic sensor (4) detects positions of relative movement with respect to the coil and the magnet. The shield member (5) is made of a soft magnetic body. The magnetic sensor (4) includes a first magnetoresistive element (41) and a second magnetoresistive element (42). The first magnetoresistive element (41) includes a first magnetosensitive surface (411). The second magnetoresistive element (42) includes a second magnetosensitive surface (421) and is connected in series with the first magnetoresistive element (41). The magnetic sensor (4) is aligned with the magnet in a second direction. The first magnetoresistive element (41) is arranged so that the first magnetosensitive surface (411) faces the shield member (5).
Inventors:
ONAKA KAZUHIRO
YONEYAMA TAKUYA
YONEYAMA TAKUYA
Application Number:
PCT/JP2023/024718
Publication Date:
January 11, 2024
Filing Date:
July 04, 2023
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
G01D5/245
Foreign References:
| JP2013255331A | 2013-12-19 | |||
| JPH11311543A | 1999-11-09 | |||
| JP2004289160A | 2004-10-14 | |||
| JP2022050760A | 2022-03-31 | |||
| JP2015513667A | 2015-05-14 | |||
| JP2018044789A | 2018-03-22 |
Attorney, Agent or Firm:
HOKUTO PATENT ATTORNEYS OFFICE (JP)
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