Title:
MAGNETISM DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/136825
Kind Code:
A1
Abstract:
The provision of a technology for improving magnetic-oscillation sensors and a magnetism detection device such that full advantage of the characteristics of said magnetic-oscillation sensors can be taken. An oscillation-synchronization-signal network in which op-amp circuits (8, 17, 26) for a plurality of magnetic-oscillation sensors are connected by electrical connectors (1, 2, 3) so as to unify the oscillation frequencies of said magnetic-oscillation sensors is constructed, and a resultant excitation current obtained from an oscillation-synchronization signal flowing through the aforementioned oscillation-synchronization-signal network and excitation currents outputted from the aforementioned op-amp circuits (8, 17, 26) is used to forcibly excite cores (6, 15, 24) in magnetism-sensing parts (4, 13, 22) at the unified magnetic-oscillation frequency.
Inventors:
MIZUMA TAKESHI (JP)
TAKEUCHI SHINJIRO (JP)
TAKEUCHI SHINJIRO (JP)
Application Number:
PCT/JP2014/055592
Publication Date:
September 12, 2014
Filing Date:
March 05, 2014
Export Citation:
Assignee:
INDEPENDENT ADMINISTRATIVE INSTITUTION NAT TRAFFIC SAFETY & ENVIRONMENT LABORATORY (JP)
HANO MFG CO LTD (JP)
HANO MFG CO LTD (JP)
International Classes:
G01R33/02
Foreign References:
| JP2005069829A | 2005-03-17 | |||
| JPH07244166A | 1995-09-19 | |||
| JP2005043254A | 2005-02-17 | |||
| JP2004108776A | 2004-04-08 | |||
| JP2005269580A | 2005-09-29 | |||
| JP2005069829A | 2005-03-17 |
Other References:
See also references of EP 2975422A4
Attorney, Agent or Firm:
KATO, Hisashi et al. (JP)
Hisashi Kato (JP)
Hisashi Kato (JP)
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