Title:
PRESSURE SENSOR USING ELECTROMAGNETIC COUPLING
Document Type and Number:
WIPO Patent Application WO/2005/052532
Kind Code:
A1
Abstract:
There is provided a noise-resistant pressure sensor which can be increased in size. The pressure sensor uses electromagnetic coupling. A sensor unit includes a first coil (1), a second coil (2) arranged so as to be superimposed on the first coil, and a first cushion member (3) arranged between the first coil and the second coil. A drive circuit and a detection circuit are connected to the sensor unit. The drive circuit drives one of the first coil and the second coil. The detection circuit detects pressure applied to the sensor unit from the signal by the electromagnetic coupling from the other of the first coil and the second coil. By arranging the sensor unit in a matrix state, it is possible to measure a pressure distribution.
Inventors:
Ogawa, Yasuji c/o Xiroku (Inc. 2-1-, Sengen Tsukuba-shi Ibaraki 35, 30500, JP)
Application Number:
PCT/JP2004/016390
Publication Date:
June 09, 2005
Filing Date:
November 05, 2004
Export Citation:
Assignee:
XIROKU, INC. (2-1-6, Sengen, Tsukuba-shi Ibaraki 35, 30500, JP)
Ogawa, Yasuji c/o Xiroku (Inc. 2-1-, Sengen Tsukuba-shi Ibaraki 35, 30500, JP)
Ogawa, Yasuji c/o Xiroku (Inc. 2-1-, Sengen Tsukuba-shi Ibaraki 35, 30500, JP)
International Classes:
G01L1/14; B60R21/015; G01L5/00; (IPC1-7): G01L1/14; G01L5/00
Attorney, Agent or Firm:
Ishihara, Masanori (Ishihara & Ishihara, 4F Miyamasuzaka ST Building, 8-, Shibuya 1-chome Shibuya-ku Tokyo 02, 15000, JP)
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