Title:
MAGNETISM MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/136975
Kind Code:
A1
Abstract:
A precise, high-sensitivity magnetism measurement device (10) is provided. Said magnetism measurement device (10) comprises the following: a magnetic amorphous material (46, 48) comprising a solid or a liquid that exhibits magnetic anisotropy; a conductive wire (42, 44) that is positioned near the amorphous wire (46, 48) so as to apply a current-inducing magnetic-field vector that has a component perpendicular to a direction in which the amorphous wire (46, 48) is easily magnetized; and a magnetic-field-detecting coil (50, 52). Current is run through the conductive wire (42, 44) repeatedly, and an emf generated in the coil (50, 52) is detected and used as an output signal. Thus, the amorphous material (46, 48) generates a magnetic field on the basis of the current run through the conductive wire (42, 44), said magnetic field generates an emf in the coil (50, 52), and said emf is measured in order to detect magnetism.
Inventors:
NAKAYAMA SHINSUKE (JP)
MIYAZAKI HIDEKI (JP)
MIYAZAKI HIDEKI (JP)
Application Number:
PCT/JP2014/056077
Publication Date:
September 12, 2014
Filing Date:
March 07, 2014
Export Citation:
Assignee:
UNIV NAGOYA NAT UNIV CORP (JP)
FUJIDENOLO CO LTD (JP)
FUJIDENOLO CO LTD (JP)
International Classes:
G01R33/02
Domestic Patent References:
| WO2005019851A1 | 2005-03-03 | |||
| WO2009130814A1 | 2009-10-29 |
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Other References:
UCHIYAMA, T.; NAKAYAMA, S.; MOHRI, K.; BUSHIDA, K.: "Biomagnetic field detection using very high sensitive MI sensor for medical application", PHYSICA STATUS SOLIDIA-APPLICATIONS AND MATERIALS SCIENCE, vol. 206, 2009, pages 639 - 643
NAKAYAMA, S.; ATSUTA, S.; SHINMI, T.; UCHIYAMA, T.: "Pulse-driven magnetoimpedance sensor detection of biomagnetic fields in musculatures with spontaneous electric activity", BIOSENSORS AND BIOELECTRONICS, vol. 27, 2011, pages 34 - 39, XP028252573, DOI: doi:10.1016/j.bios.2011.05.041
NAKAYAMA, S.; SAWAMURA, K.; MOHRI, K.; UCHIYAMA, T.: "Pulse-driven magnetoimpedance sensor detection of cardiac magnetic activity", PLOS ONE, vol. 6, no. 10, 2011, pages E25834
MELO LGC; MENARD D; YELON A; DING L; SAEZ S; DOLABDJIAN C: "Optimization of the magnetic noise and sensitivity of giant magnetoimpedance sensors", J APPL PHYS, vol. 103, 2008, pages 033903
NAKAYAMA, S.; ATSUTA, S.; SHINMI, T.; UCHIYAMA, T.: "Pulse-driven magnetoimpedance sensor detection of biomagnetic fields in musculatures with spontaneous electric activity", BIOSENSORS AND BIOELECTRONICS, vol. 27, 2011, pages 34 - 39, XP028252573, DOI: doi:10.1016/j.bios.2011.05.041
NAKAYAMA, S.; SAWAMURA, K.; MOHRI, K.; UCHIYAMA, T.: "Pulse-driven magnetoimpedance sensor detection of cardiac magnetic activity", PLOS ONE, vol. 6, no. 10, 2011, pages E25834
MELO LGC; MENARD D; YELON A; DING L; SAEZ S; DOLABDJIAN C: "Optimization of the magnetic noise and sensitivity of giant magnetoimpedance sensors", J APPL PHYS, vol. 103, 2008, pages 033903
Attorney, Agent or Firm:
IKEDA Haruyuki et al. (JP)
Haruyuki Ikeda (JP)
Haruyuki Ikeda (JP)
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