Title:
加速度検出装置、方法及びプログラム
Document Type and Number:
Japanese Patent JP5364744
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enable highly accurate extraction of the peak of acceleration data even for the acceleration data that makes it difficult to extract the peak by only using a smoothing process of waveform or a process utilizing a threshold.SOLUTION: After a 3-axis acceleration data received from an acceleration sensor AS is normalized and smoothed, an adjustment is made so that the positive direction and the negative direction of a waveform is the same among respective axis data of the smoothed acceleration data. Then, a peak position candidate extraction part 24 extracts, as a peak position candidate, only the combination of peak positions where the peak positions in all 3 axes are extracted at proximate positions from a 3-axis smoothed acceleration data to which the aforementioned axis-direction adjustment has been applied. Based on the information of the extracted peak position candidate, a peak position detection part 25 detects an acceleration value that is the largest among values existing in the corresponding position in the raw acceleration data as a peak value.
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Inventors:
Tatsuya Ishihara
Nobuhiro Muto
Yukihiro Nakamura
Tatsuaki Ito
Nobuhiro Muto
Yukihiro Nakamura
Tatsuaki Ito
Application Number:
JP2011044361A
Publication Date:
December 11, 2013
Filing Date:
March 01, 2011
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
A61B5/11; G01P15/18
Domestic Patent References:
| JP9126795A | ||||
| JP2003038469A | ||||
| JP2003331063A | ||||
| JP2007244495A | ||||
| JP2010218078A | ||||
| JP2010071792A | ||||
| JP2007292514A | ||||
| JP2003302419A |
Attorney, Agent or Firm:
Kurata Masatoshi
Toshizo Koide
Takashi Mine
Nobuhisa Nogawa
Toshizo Koide
Takashi Mine
Nobuhisa Nogawa