Title:
DISPLACEMENT-DETECTING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2016/117497
Kind Code:
A1
Abstract:
[Problem] To provide a displacement-detecting apparatus having improved sensitivity to displacement of an object to be measured. [Solution] This displacement-detecting apparatus 1 has: a pair of magnets 4 arranged across a gap, and forming a magnetic field in the gap; a displaceable soft magnetic body 3 arranged between the pair of magnets 4, and connected to an object to be measured 5; a sensor 2 arranged between the pair of magnets 4, and having a pair of Hall elements 20a and 20b for detecting changes of the magnetic field associated with displacement of the soft magnetic body 3 in a detection direction Dsz intersecting the displacement direction Dd of the soft magnetic body 3; and a differential amplifier circuit 21 for outputting the differential of the outputs of the Hall elements 20a and 20b of the sensor 2.
Inventors:
YOSHIYA TAKUMI (JP)
Application Number:
PCT/JP2016/051264
Publication Date:
July 28, 2016
Filing Date:
January 18, 2016
Export Citation:
Assignee:
MELEXIS TECHNOLOGIES NV (BE)
MELEXIS JAPAN TECHNICAL RES CT KK (JP)
MELEXIS JAPAN TECHNICAL RES CT KK (JP)
International Classes:
G01D5/14
Domestic Patent References:
| WO2009041682A1 | 2009-04-02 |
Foreign References:
| JPS5932803A | 1984-02-22 | |||
| JP2012189527A | 2012-10-04 | |||
| JP2009192517A | 2009-08-27 | |||
| JPH04369878A | 1992-12-22 |
Attorney, Agent or Firm:
HIRATA, Tadao (JP)
Tadao Hirata (JP)
Tadao Hirata (JP)
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