Title:
MEASURING DEVICE, FUEL BATTERY WITH SAME, AND MEASURING METHOD
Document Type and Number:
WIPO Patent Application WO/2008/062561
Kind Code:
A1
Abstract:
A measuring device (100) locally measures the amount of protic solvent at a specific region
in a membrane (115) by the nuclear magnetic resonance method. The measuring device
(100) comprises a permanent magnet (113) for applying a magnetostatic field
to the membrane (115), a flat coil (114) for applying an exciting oscillating field
to a part of the membrane (115) and acquiring echo signals corresponding to the
exciting oscillating field, and an amount-of-solvent calculating section (124)
for calculating the T2 relaxation time constant from the intensities of
the echo signals and calculating the amount of protic solvent in a specific region
of the membrane (115) from the calculated T2 relaxation time constant.
A passage groove through which a fluid containing the protic solvent flows is
formed in the permanent magnet (113). The membrane (115) is formed parallel to
the passage formation surface of the permanent magnet (113), and the permanent magnet
(113) applies a magnetostatic field in the direction of the thickness of the membrane
(115).
Inventors:
OGAWA KUNIYASU (JP)
HAISHI TOMOYUKI (JP)
ITO KOHEI (JP)
HAISHI TOMOYUKI (JP)
ITO KOHEI (JP)
Application Number:
PCT/JP2007/001283
Publication Date:
May 29, 2008
Filing Date:
November 21, 2007
Export Citation:
Assignee:
UNIV KEIO (JP)
OGAWA KUNIYASU (JP)
HAISHI TOMOYUKI (JP)
ITO KOHEI (JP)
OGAWA KUNIYASU (JP)
HAISHI TOMOYUKI (JP)
ITO KOHEI (JP)
International Classes:
G01N24/00; G01N24/08; G01R33/341; G01R33/383; H01M8/02; H01M8/04; H01M8/10
Domestic Patent References:
| WO2006030743A1 | 2006-03-23 |
Foreign References:
| JP2004170297A | 2004-06-17 |
Other References:
OGAWA K. ET AL.: "Multi NMR Sensor ni yoru Kotai Kobunshi Denkaishitsu Makunai Gansuiryo Bunpu no Real Time Keisoku", DAI 10 KAI NMR MICROIMAGING STUDY GROUP KOEN YOSHISHU, July 2006 (2006-07-01), pages 32 - 35, XP003022107
Attorney, Agent or Firm:
HAYAMI, Shinji (9-2 Nishi-Gatanda 7-chom, Shinagawa-ku Tokyo 31, JP)
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