JP2009525107A - 歩行分析 - Google Patents
歩行分析 Download PDFInfo
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- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/1036—Measuring load distribution, e.g. podologic studies
- A61B5/1038—Measuring plantar pressure during gait
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/112—Gait analysis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
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- A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/7253—Details of waveform analysis characterised by using transforms
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/7253—Details of waveform analysis characterised by using transforms
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- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/7264—Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F2218/02—Preprocessing
- G06F2218/04—Denoising
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- G06—COMPUTING; CALCULATING OR COUNTING
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- G06F2218/00—Aspects of pattern recognition specially adapted for signal processing
- G06F2218/12—Classification; Matching
- G06F2218/16—Classification; Matching by matching signal segments
- G06F2218/18—Classification; Matching by matching signal segments by plotting the signal segments against each other, e.g. analysing scattergrams
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Abstract
【選択図】図1
Description
(a)時間ウィンドウ内のセンサ信号の時間的ばらつきを示す選択変数を決定するステップ;
(b)選択変数用の選択基準を決定するステップ;
(c)選択基準に対して選択変数の値を比較して、自己組織化マップに対して入力表示(representation)を選択するステップと、選択された入力表示に従って、時間ウィンドウ内のデータサンプルから入力を抽出するステップ;
(d)この入力を、選択された入力表示に対応する自己組織化中のマップに与え、自己組織化マップの勝者(ウィニング)出力ユニットに基づいてデータ記録を分類するステップ;とを含む。
(a)時間ウィンドウ内の動的データ記録の特性の時間的ばらつきを表す、抽出した表示を計算すること;
(b)第2の自己組織化マップ用の入力として、得られた表示を用いるステップ;
(c)トレーニングアルゴリズムに従って自己組織化マップのパラメータを更新するステップ;
を具えることができる。
Claims (20)
- 歩行分析される被験者の頭部加速度を示す信号を測定するステップと、
測定された信号に変換を適用し、前記被験者の歩行を示す歩行シグニチャを計算するステップと、
を具える歩行分析方法。 - 前記歩行シグニチャと基準線シグニチャとを比較して、これらの間の差異を検出するステップを具えることを特徴とする請求項1に記載の方法。
- 1つ又はそれ以上のシグニチャを所定時間に亘って記憶し、前記基準線シグニチャは、所定時間に亘り歩行シグニチャにおける変化を観察するための1つ又はそれ以上の記憶されたシグニチャを表すことを特徴とする請求項2に記載の方法。
- 前記測定されたシグニチャは、被験者が直立位置にある場合、実質的に垂直方向における加速度を示すことを特徴とする請求項1、2又は3のいずれか1項に記載の方法。
- 前記変換がフーリエ変換であることを特徴とする請求項1乃至4のいずれか1項に記載の方法。
- 前記シグニチャが、n個の一次高調波のエネルギ値を含むことを特徴とする請求項5に記載の方法。
- 前記変換が、ウェーブレット変換であることを特徴とする請求項1乃至4のいずれか1項に記載の方法。
- 前記シグニチャが、自己組織化マップ又は空間−時間の自己組織化マップに対する入力として使用されることを特徴とする請求項1乃至7のいずれか1項に記載の方法。
- シグニチャのエントロピを計算するステップと、計算されたエントロピを用いてシグニチャを比較するステップと、を具えることを特徴とする請求項1乃至8のいずれか1項に記載の方法。
- ヒトの頭部に固定するように構成したセンサハウジングに設けられた加速度センサと:
センサに動作可能に接続され、かつ頭部加速度を示す出力を受信するように動作可能で、変換を適用して歩行パターンを示す歩行シグニチャを計算する、分析器と、
を具えることを特徴とする歩行分析システム。 - 基準線シグニチャとシグニチャとの差を検出するために、シグニチャを基準線シグニチャと比較するように動作可能なコンパレータを具えることを特徴とする請求項10に記載のシステム。
- 前記コンパレータを用いて、所定時間に亘りシグニチャの変化を観察できるように、前記基準が1つ又はそれ以上の記憶されたシグニチャを示す1つ又はそれ以上のシグニチャを記憶するメモリを具えることを特徴とする請求項11に記載のシステム。
- 前記ハウジングが、装着されるように構成され、前記被験者が直立位置にある場合、前記出力が実質的に垂直方向の頭部加速度を示すことを特徴とする請求項10乃至12のいずれか1項に記載のシステム。
- 前記ハウジング内に含まれることを特徴とする請求項10乃至13のいずれか1項に記載のシステム。
- 前記ハウジングが、イヤプラグ、耳の後側に装着するクリップ、イヤリング、イヤクリップ、補聴器または一対の眼鏡を具えることを特徴とする請求項10乃至14のいずれか1項に記載のシステム。
- 前記ハウジングが、ヘッドバンド、ハットまたは他の帽子に固定されていることを特徴とする請求項10乃至15のいずれか1項に記載のシステム。
- 前記変換が、フーリエ変換であることを特徴とする請求項10乃至16のいずれか1項に記載のシステム。
- 前記シグニチャが、n個の一次高調波のエネルギ値を含むことを特徴とする請求項17に記載のシステム。
- 前記変換が、ウェーブレット分析であることを特徴とする請求項10乃至16のいずれか1項に記載のシステム。
- 入力としてシグニチャを受信するよう動作可能な、自己組織化マップ又は空間−時間自己組織化マップを具えるさらなる分析器を具える請求項10乃至19のいずれか1項に記載のシステム。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB0602127.3A GB0602127D0 (en) | 2006-02-02 | 2006-02-02 | Gait analysis |
PCT/GB2007/000358 WO2007088374A1 (en) | 2006-02-02 | 2007-02-02 | Gait analysis |
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JP2009525107A true JP2009525107A (ja) | 2009-07-09 |
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JP2008552886A Pending JP2009525107A (ja) | 2006-02-02 | 2007-02-02 | 歩行分析 |
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US (1) | US20090030350A1 (ja) |
EP (1) | EP1983896B1 (ja) |
JP (1) | JP2009525107A (ja) |
CN (1) | CN101394788B (ja) |
AU (1) | AU2007210929A1 (ja) |
CA (1) | CA2641474A1 (ja) |
DK (1) | DK1983896T3 (ja) |
GB (1) | GB0602127D0 (ja) |
WO (1) | WO2007088374A1 (ja) |
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US20090030350A1 (en) | 2009-01-29 |
CN101394788B (zh) | 2012-07-04 |
GB0602127D0 (en) | 2006-03-15 |
DK1983896T3 (en) | 2017-10-09 |
EP1983896A1 (en) | 2008-10-29 |
CN101394788A (zh) | 2009-03-25 |
WO2007088374A1 (en) | 2007-08-09 |
AU2007210929A1 (en) | 2007-08-09 |
EP1983896B1 (en) | 2017-06-21 |
CA2641474A1 (en) | 2007-08-09 |
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