Title:
位置計測装置および位置計測方法
Document Type and Number:
Japanese Patent JP7059114
Kind Code:
B2
Abstract:
To provide a position measurement technique which allows improvement in measurement accuracy of a walking position.SOLUTION: A position measurement device comprises: an angular velocity sensor 2 which senses a triaxial angular velocity varied by movement of an object person P who is an object of position measurement; an acceleration sensor 3 which senses a triaxial acceleration varied by movement of the object person; a coordinate transformation unit 5 which transforms the triaxial acceleration to global accelerations corresponding to a horizontal direction and a vertical direction of global coordinates C on the basis of a value indicative of turning obtained by the triaxial angular velocity; a step length estimation unit 6 which obtains an interval and a step length of one step in the global coordinates C on the basis of the global acceleration; a direction-of-walking estimation unit 7 which obtains a direction of walking on the basis of a value resulting of phase advance of the global acceleration in the vertical direction and a value of the global acceleration in the horizontal direction during the interval of one step; and a position estimation unit 8 which obtains a waling position on the basis of the step length and the direction of walking.SELECTED DRAWING: Figure 2
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Inventors:
Sameda Yoshitomi
Hiroyuki Nishikawa
Junpei Ogawa
Hidehiko Kuroda
Takahiro Shirota
Naotaka Oda
Yoshiro Ikeda
Hiroyuki Nishikawa
Junpei Ogawa
Hidehiko Kuroda
Takahiro Shirota
Naotaka Oda
Yoshiro Ikeda
Application Number:
JP2018114745A
Publication Date:
April 25, 2022
Filing Date:
June 15, 2018
Export Citation:
Assignee:
Toshiba Corporation
Toshiba Energy Systems Co., Ltd.
Toshiba Energy Systems Co., Ltd.
International Classes:
G01C21/26; G01C21/28
Domestic Patent References:
| JP2015184159A | ||||
| JP2014167461A |
Foreign References:
| WO2011093447A1 | ||||
| WO2017104646A1 | ||||
| WO2015107853A1 |
Attorney, Agent or Firm:
Patent business corporation Tokyo International Patent Office