Title:
加速度センサ
Document Type and Number:
Japanese Patent JP4896712
Kind Code:
B2
Abstract:
An accelerometer for measuring the displacement of a magnet body using magnetic detecting elements is provided, the accelerometer having superior measurement accuracy by suppressing influence of an external magnetic field such as the earth magnetic field. The accelerometer has detecting units each having a cantilever which is elastically deformed so as to rotate around a fixed end thereof, a magnet body provided at a free end of the cantilever, and a magnetic detecting head portion disposed outside the rotation region of the cantilever. In order to correct detection signals output from the magnetic detecting head portions, the accelerometer has peripheral magnetic field detecting portions for measuring an external magnetic field acting on the magnetic detecting head portions and the magnet body for correcting a detection signal output from the magnetic detecting head portion. The correction includes a correction of the cantilever movement in response to the external magnetic field. The beam may be formed of a Ni-P alloy, and its support may extend parallel to the beam, to protect the beam.
Inventors:
Yoshinobu Honzo
Michiharu Yamamoto
Kotani Yoshiaki
Masaki Mori
Eiji Kako
Genban Hiroe
Takumi Asano
Naoki Ishikawa
Michiharu Yamamoto
Kotani Yoshiaki
Masaki Mori
Eiji Kako
Genban Hiroe
Takumi Asano
Naoki Ishikawa
Application Number:
JP2006512833A
Publication Date:
March 14, 2012
Filing Date:
April 28, 2005
Export Citation:
Assignee:
Aichi Steel Co., Ltd.
International Classes:
G01P15/105; G01D5/14; G01P1/00; G01P1/02; G01P15/08; G01R33/025
Domestic Patent References:
| JP2002040043A | 2002-02-06 | |||
| JPH09222367A | 1997-08-26 |
Attorney, Agent or Firm:
Patent Business Corporation Aichi International Patent Office
Yoshiyasu Takahashi
Yoshiyasu Takahashi