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Patent Searching and Data


Title:
CALIBRATION DEVICE, MEASUREMENT DEVICE, SPHERICAL BODY, CALIBRATION METHOD AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2019/155687
Kind Code:
A1
Abstract:
The present invention is provided with: an acceleration acquisition unit which acquires an acceleration output from an acceleration sensor; an angular velocity acquisition unit which acquires an angular velocity output from a gyro sensor; a first determination unit which determines, on the basis of the angular velocity acquired by the angular velocity acquisition unit, whether rotation of a measurement device is stable; a third determination unit which determines, on the basis of the acceleration acquired from the acceleration acquisition unit, whether the measurement device is in a free-fall state; and a correction value calculation unit which uses, as valid data, the acceleration acquired from the acceleration acquisition unit and calculates a correction value for the acceleration output from the acceleration sensor, when the first determination unit determines that the rotation of the measurement device is stable and the third determination unit determines that the measurement device is in the free-fall state.

Inventors:
NAKAGAWA MASASHI (JP)
OKUNO TOUICHI (JP)
Application Number:
PCT/JP2018/038168
Publication Date:
August 15, 2019
Filing Date:
October 12, 2018
Export Citation:
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Assignee:
ALPS ALPINE CO LTD (JP)
International Classes:
G01P21/00
Domestic Patent References:
WO2007077859A12007-07-12
WO2006016671A12006-02-16
Foreign References:
JP2017146129A2017-08-24
US20160169680A12016-06-16
JP2014171907A2014-09-22
JP2012058066A2012-03-22
JP2003299757A2003-10-21
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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