JP2016182164A5 - Biological signal processing apparatus and biological signal processing method - Google Patents
Biological signal processing apparatus and biological signal processing method Download PDFInfo
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- JP2016182164A5 JP2016182164A5 JP2015062804A JP2015062804A JP2016182164A5 JP 2016182164 A5 JP2016182164 A5 JP 2016182164A5 JP 2015062804 A JP2015062804 A JP 2015062804A JP 2015062804 A JP2015062804 A JP 2015062804A JP 2016182164 A5 JP2016182164 A5 JP 2016182164A5
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- 238000003672 processing method Methods 0.000 title claims description 5
- 238000001228 spectrum Methods 0.000 claims description 36
- 238000004458 analytical method Methods 0.000 claims description 9
- 230000000875 corresponding Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 230000003595 spectral Effects 0.000 claims description 4
- 238000006116 polymerization reaction Methods 0.000 claims 4
- 238000001831 conversion spectrum Methods 0.000 claims 3
- 239000012491 analyte Substances 0.000 description 1
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Description
本発明は、運動している検体から検出された生体信号を処理する生体信号処理装置及び生体信号処理方法に関するものである。 The present invention relates to a biological signal processing apparatus and a biological signal processing how to process the detected biological signal from the analyte in motion.
（４）ここで開示する生体信号処理方法は、運動している検体から検出された生体信号を処理する生体信号処理方法であって、該検体から検出された脈波を表す脈波信号を取得する脈波信号取得ステップと、該検体から検出された体動を表す体動信号を取得する体動信号取得ステップと、該脈波信号を周波数解析して、周波数領域の脈波のスペクトルに変換する脈波周波数解析ステップと、該体動信号を周波数解析して、周波数領域の体動のスペクトルに変換する体動周波数解析ステップと、上記の体動周波数解析ステップで得られた体動のスペクトルを、該体動が検出された位置に応じて所望の周波数領域のスペクトルに変換した変換スペクトルを得る周波数変換ステップと、上記の脈波周波数解析ステップで得られた脈波のスペクトルから、上記の周波数変換ステップで得られた体動の変換スペクトルのピーク部分の周波数に相当する成分を減衰させる体動成分減衰ステップとを備える。
また、上記の体動成分減衰ステップで得られた脈波のスペクトルからスペクトル強度が最大のピークを検出するピーク検出ステップを備える。
さらに、上記の体動成分減衰ステップで得られた脈波のスペクトルに対して、過去の検出により得られた心拍数に対応する周波数を中心点として、上記の中心点の周波数から離れるにつれてスペクトル強度が減少する重み付けを行なう重み付けステップを備え、該ピーク検出ステップは、上記の重み付けステップで得られた脈波のスペクトルからスペクトル強度が最大のピークを検出する。
(4) The biological signal processing method disclosed herein is a biological signal processing method for processing a biological signal detected from a moving specimen, and acquires a pulse wave signal representing a pulse wave detected from the specimen. A pulse wave signal acquisition step, a body motion signal acquisition step for acquiring a body motion signal representing a body motion detected from the specimen, and frequency analysis of the pulse wave signal to convert it to a pulse wave spectrum in the frequency domain A pulse wave frequency analyzing step, a body motion frequency analyzing step for performing frequency analysis on the body motion signal and converting the body motion signal into a body motion spectrum in the frequency domain, and a body motion spectrum obtained in the body motion frequency analyzing step. Is converted to a spectrum in a desired frequency region according to the position where the body motion is detected, and the pulse wave spectrum obtained in the pulse wave frequency analysis step is obtained. , And a body motion component attenuation step for attenuating the component corresponding to the frequency of the peak portion of the transform spectrum of the body motion obtained by the above-mentioned frequency conversion step.
Further, a peak detection step is provided for detecting a peak having the maximum spectrum intensity from the pulse wave spectrum obtained in the body motion component attenuation step.
Furthermore, with respect to the pulse wave spectrum obtained in the body motion component attenuation step, the spectrum intensity increases with increasing frequency from the center point with the frequency corresponding to the heart rate obtained by the past detection as the center point. The peak detecting step detects a peak having the maximum spectral intensity from the spectrum of the pulse wave obtained in the weighting step.
Claims (5)
該検体から検出された脈波を表す脈波信号を取得する脈波信号取得手段と、
該検体から検出された体動を表す体動信号を取得する体動信号取得手段と、
該脈波信号を周波数解析して、周波数領域の脈波のスペクトルに変換する脈波周波数解析手段と、
該体動信号を周波数解析して、周波数領域の体動のスペクトルに変換する体動周波数解析手段と、
上記の体動周波数解析手段で得られた体動のスペクトルを、該体動が検出された位置に応じて所望の周波数領域のスペクトルに変換した変換スペクトルを得る周波数変換手段と、
上記の脈波周波数解析手段で得られた脈波のスペクトルから、上記の周波数変換手段で得られた体動の変換スペクトルのピーク部分の周波数に相当する成分を減衰させる体動成分減衰手段とを備える
ことを特徴とする、生体信号処理装置。 A biological signal processing device for processing a biological signal detected from a moving specimen,
Pulse wave signal acquisition means for acquiring a pulse wave signal representing a pulse wave detected from the specimen;
Body motion signal acquisition means for acquiring a body motion signal representing the body motion detected from the specimen;
A pulse wave frequency analyzing means for frequency-analyzing the pulse wave signal and converting it to a spectrum of a pulse wave in a frequency domain;
A body motion frequency analyzing means for frequency-analyzing the body motion signal and converting it into a spectrum of body motion in the frequency domain;
Frequency conversion means for obtaining a converted spectrum obtained by converting the body motion spectrum obtained by the body motion frequency analyzing means into a spectrum of a desired frequency region according to the position where the body motion is detected;
Body motion component attenuating means for attenuating a component corresponding to the frequency of the peak portion of the body motion conversion spectrum obtained by the frequency converting means from the pulse wave spectrum obtained by the pulse wave frequency analyzing means; characterized in that it comprises, biological signal processing equipment.
該体動成分減衰手段は、上記の脈波周波数解析手段で得られた脈波のスペクトルから、上記の重合処理手段で得られた体動の重合スペクトルのピーク部分の周波数に相当する成分を減衰させる
ことを特徴とする、請求項１に記載の生体信号処理装置。 Comprising a polymerization processing means for obtaining a polymerization spectrum by superimposing the body movement conversion spectrum obtained by the frequency conversion means and the body movement spectrum obtained by the body movement frequency analysis means;
The body motion component attenuation means attenuates a component corresponding to the frequency of the peak portion of the body motion polymerization spectrum obtained by the polymerization processing means from the pulse wave spectrum obtained by the pulse wave frequency analysis means. The biological signal processing apparatus according to claim 1, wherein:
ことを特徴とする、請求項１または請求項２に記載の生体信号処理装置。 The biological signal processing apparatus according to claim 1, further comprising: a peak detection unit that detects a peak having the maximum spectrum intensity from the pulse wave spectrum obtained by the body motion component attenuation unit. .
該ピーク検出手段は、上記の重み付け手段で得られた脈波のスペクトルからスペクトル強度が最大のピークを検出する
ことを特徴とする、請求項３に記載の生体信号処理装置。 With respect to the pulse wave spectrum obtained by the body motion component attenuation means, the spectrum intensity decreases with distance from the center point frequency, with the frequency corresponding to the heart rate obtained by past detection as the center point. Weighting means for performing weighting,
The peak detecting means is characterized in that the spectral intensity from the spectrum of the resulting pulse wave by the weighting means detects a maximum peak, the biological signal processing equipment according to claim 3.
該検体から検出された脈波を表す脈波信号を取得する脈波信号取得ステップと、
該検体から検出された体動を表す体動信号を取得する体動信号取得ステップと、
該脈波信号を周波数解析して、周波数領域の脈波のスペクトルに変換する脈波周波数解析ステップと、
該体動信号を周波数解析して、周波数領域の体動のスペクトルに変換する体動周波数解析ステップと、
上記の体動周波数解析ステップで得られた体動のスペクトルを、該体動が検出された位置に応じて所望の周波数領域のスペクトルに変換した変換スペクトルを得る周波数変換ステップと、
上記の脈波周波数解析ステップで得られた脈波のスペクトルから、上記の周波数変換ステップで得られた体動の変換スペクトルのピーク部分の周波数に相当する成分を減衰させる体動成分減衰ステップと、
上記の体動成分減衰ステップで得られた脈波のスペクトルからスペクトル強度が最大のピークを検出するピーク検出ステップと、
上記の体動成分減衰ステップで得られた脈波のスペクトルに対して、過去の検出により得られた心拍数に対応する周波数を中心点として、上記の中心点の周波数から離れるにつれてスペクトル強度が減少する重み付けを行なう重み付けステップとを備え、
該ピーク検出ステップは、上記の重み付けステップで得られた脈波のスペクトルからスペクトル強度が最大のピークを検出する
ことを特徴とする、生体信号処理方法。 A biological signal processing method for processing a biological signal detected from a moving specimen,
A pulse wave signal acquisition step of acquiring a pulse wave signal representing the pulse wave detected from the specimen;
A body motion signal acquisition step of acquiring a body motion signal representing the body motion detected from the specimen;
A pulse wave frequency analyzing step of performing frequency analysis of the pulse wave signal and converting the pulse wave signal into a spectrum of a pulse wave in a frequency domain;
A body motion frequency analysis step of frequency-analyzing the body motion signal and converting it into a spectrum of body motion in the frequency domain;
A frequency conversion step of obtaining a converted spectrum obtained by converting the spectrum of body motion obtained in the body motion frequency analysis step into a spectrum of a desired frequency region according to a position where the body motion is detected;
A body motion component attenuation step for attenuating a component corresponding to the frequency of the peak portion of the conversion spectrum of the body motion obtained in the frequency conversion step from the pulse wave spectrum obtained in the pulse wave frequency analysis step ;
A peak detection step for detecting a peak having the maximum spectral intensity from the spectrum of the pulse wave obtained in the body motion component attenuation step;
With respect to the pulse wave spectrum obtained in the body motion component attenuation step, the spectrum intensity decreases with increasing frequency away from the center point frequency, with the frequency corresponding to the heart rate obtained by past detection as the center point. And a weighting step for performing weighting,
The biological signal processing method, wherein the peak detecting step detects a peak having the maximum spectral intensity from the spectrum of the pulse wave obtained in the weighting step .
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| JP3728895B2 (en) * | 1997-08-26 | 2005-12-21 | セイコーエプソン株式会社 | Exercise intensity detector |
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