JP4354388B2 - 非定常波解析システム - Google Patents
非定常波解析システム Download PDFInfo
- Publication number
- JP4354388B2 JP4354388B2 JP2004339514A JP2004339514A JP4354388B2 JP 4354388 B2 JP4354388 B2 JP 4354388B2 JP 2004339514 A JP2004339514 A JP 2004339514A JP 2004339514 A JP2004339514 A JP 2004339514A JP 4354388 B2 JP4354388 B2 JP 4354388B2
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- signal
- wave
- output
- analysis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2218/00—Aspects of pattern recognition specially adapted for signal processing
- G06F2218/08—Feature extraction
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Data Mining & Analysis (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Bioinformatics & Computational Biology (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Life Sciences & Earth Sciences (AREA)
- Evolutionary Biology (AREA)
- Evolutionary Computation (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Artificial Intelligence (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Description
k(t):生体信号(原信号)
f(t):特徴信号(特徴抽出後の信号)
ωm:特徴周波数
k(t,ωm):生体信号の特徴周波数ωm周辺の時系列信号
U(ω,ωm,l):帯域通過フィルタ Band Pass Filter
l:帯域幅
デジタル計測で得られる実測信号は離散信号なので、[数2]を離散フーリエ変換(DFT)で表示すると、
11:乗算演算器
12:微分演算器
13:ディジタル信号処理ボード制御装置、
14:システム制御装置、
20:ディジタル信号処理ボード
21:複数の乗算演算器
22:複数の微分演算器
23:ディジタル信号処理ボード制御装置
24:システム制御装置
25:周波数分解装置
30:ディジタル信号処理ボード
31:微分演算器
32:可変抵抗器
33:第1の乗算演算器
34:第2の乗算演算器
35:加算演算器
36:平方根演算器
37:ディジタル信号処理ボード制御装置
38:システム制御装置
39:周波数分解装置
Claims (3)
- 解析対象とする非定常波を電気信号に変換するセンサと、
電気信号に変換された非定常波の信号を自乗演算する乗算演算器と、
前記乗算演算器により自乗演算された信号を微分演算する微分演算器と、
前記微分演算器により出力された信号を出力する出力器と
を備えることを特徴とする非定常波解析システム。 - 解析対象とする非定常波を電気信号に変換するセンサと、
電気信号に変換された非定常波を周波数分析して周波数帯域ごとの信号に変換する周波数分解器と、
前記周波数分解器により出力された周波数帯域ごとの信号を自乗演算する複数の乗算演算器と、
前記乗算演算器により自乗演算された周波数帯域ごとの信号を微分演算する複数の微分演算器により出力された信号を出力する出力器と
を備えることを特徴とする非定常波解析システム。 - 解析対象とする非定常波を電気信号に変換するセンサと、
電気信号に変換された非定常波を周波数分析して周波数帯域ごとの信号に変換する周波数分解器と、
前記周波数分解器により出力された周波数帯域ごとの信号を微分演算する複数の微分演算器と、
前記微分演算器の出力信号を定数で除算する複数の可変抵抗器と、
前記可変抵抗器により出力された信号を自乗する複数の第1の乗算演算器と、
前記周波数分解器により出力された周波数帯域ごとの信号を自乗する複数の第2の乗算演算器と、
両乗算演算器の出力を加算する複数の加算演算器と、
前記加算演算器の出力の平方根値を出力する複数の平方根演算器と、
前記平方根演算器により出力された信号を出力する出力器と
を備えることを特徴とする非定常波解析システム。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004339514A JP4354388B2 (ja) | 2004-02-09 | 2004-11-24 | 非定常波解析システム |
PCT/JP2005/001427 WO2005075942A1 (ja) | 2004-02-09 | 2005-02-01 | 非定常波解析システム |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004031624 | 2004-02-09 | ||
JP2004197357 | 2004-07-02 | ||
JP2004339514A JP4354388B2 (ja) | 2004-02-09 | 2004-11-24 | 非定常波解析システム |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2006047265A JP2006047265A (ja) | 2006-02-16 |
JP2006047265A5 JP2006047265A5 (ja) | 2006-09-07 |
JP4354388B2 true JP4354388B2 (ja) | 2009-10-28 |
Family
ID=34841517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004339514A Expired - Fee Related JP4354388B2 (ja) | 2004-02-09 | 2004-11-24 | 非定常波解析システム |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP4354388B2 (ja) |
WO (1) | WO2005075942A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008292288A (ja) * | 2007-05-24 | 2008-12-04 | Mitsubishi Electric Engineering Co Ltd | 減速機の軸受診断装置 |
CN113767267A (zh) * | 2019-06-06 | 2021-12-07 | 三菱电机大楼技术服务株式会社 | 分析装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53120488A (en) * | 1977-03-29 | 1978-10-20 | Ishikawajima Harima Heavy Ind | Method of measuring crest distribution of unsteady wave by using stereo camera |
JP2001224564A (ja) * | 2000-02-18 | 2001-08-21 | Nippon Colin Co Ltd | 心音検出装置、およびその心音検出装置を利用した脈波伝播速度情報測定装置 |
-
2004
- 2004-11-24 JP JP2004339514A patent/JP4354388B2/ja not_active Expired - Fee Related
-
2005
- 2005-02-01 WO PCT/JP2005/001427 patent/WO2005075942A1/ja active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2005075942A1 (ja) | 2005-08-18 |
JP2006047265A (ja) | 2006-02-16 |
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