JP2001061795A - Pulse wave measurement instrument - Google Patents
Pulse wave measurement instrumentInfo
- Publication number
- JP2001061795A JP2001061795A JP24252899A JP24252899A JP2001061795A JP 2001061795 A JP2001061795 A JP 2001061795A JP 24252899 A JP24252899 A JP 24252899A JP 24252899 A JP24252899 A JP 24252899A JP 2001061795 A JP2001061795 A JP 2001061795A
- Authority
- JP
- Japan
- Prior art keywords
- pulse wave
- peak value
- variation
- value
- pulse
- 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.)
- Granted
Links
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、人体の脈波を計測
する脈波計測装置に関する。The present invention relates to a pulse wave measuring device for measuring a pulse wave of a human body.
【０００２】[0002]
【従来の技術】従来より、血液中のヘモグロビンの光吸
収特性を利用して人体の脈波を計測する光学式の脈波セ
ンサがある。この脈波センサは、発光素子から人体の指
先等に向けて光を照射する発光素子と、人体からの反射
光を検出する受光素子とを備え、血液の脈動によって生
じる血流量の変化、即ち脈波を受光素子での受光量の変
化として検出するものである。2. Description of the Related Art Conventionally, there is an optical pulse wave sensor for measuring a pulse wave of a human body by utilizing the light absorption characteristics of hemoglobin in blood. This pulse wave sensor includes a light emitting element for emitting light from the light emitting element toward a fingertip of a human body and the like, and a light receiving element for detecting light reflected from the human body. The wave is detected as a change in the amount of light received by the light receiving element.
【０００３】[0003]
【発明が解決しようとする課題】ところが、光学式の脈
波センサに限らず、脈波センサを人体に取り付けて使用
する場合には、日常生活における体の動き（以下体動と
言う）により脈波センサが振動して、脈波検出時にノイ
ズとなる。特に、体動により肩や肘等の大きい関節が動
いた場合は、血流量そのものが変化してノイズとなるこ
とがある。また、光学式の脈波センサでは、太陽光や螢
光燈の光等の外乱光を完全に遮断することが困難である
ため、その外乱光の変化がノイズとなり、ノイズの乗っ
た脈波が計測されてしまうという問題があった。本発明
は、上記事情に基づいて成されたもので、その目的は、
計測された脈波データにノイズ成分が乗っているか否か
を検出できる脈波計測装置を提供することにある。However, when the pulse wave sensor is used not only by an optical pulse wave sensor but also attached to a human body, the pulse is caused by body movements in daily life (hereinafter referred to as body movements). The wave sensor vibrates and becomes noise when a pulse wave is detected. In particular, when large joints such as shoulders and elbows move due to body movements, the blood flow itself may change and cause noise. Also, with an optical pulse wave sensor, it is difficult to completely block disturbance light such as sunlight or fluorescent light, so that a change in the disturbance light becomes noise, and a pulse wave with noise is generated. There was a problem of being measured. The present invention has been made based on the above circumstances, and its purpose is to
It is an object of the present invention to provide a pulse wave measuring device capable of detecting whether a noise component is included in measured pulse wave data.
【０００４】[0004]
【課題を解決するための手段】（請求項１の手段）生体
の脈波を計測し、その計測された脈波データにノイズ成
分が混入しているか否かを判断するための脈波解析回路
を備えた脈波計測装置であって、脈波解析回路は、任意
の一定時間連続して計測した脈波を微分して速度脈波を
求めた後、一拍毎の脈に対する速度脈波の振幅のピーク
値を算出し、その算出されたピーク値のばらつきに応じ
てノイズ成分の混入を判断する。この構成によれば、速
度脈波から振幅のピーク値を求めているため、ピーク値
をより的確に算出できるので、そのピーク値のばらつき
に応じてノイズ成分の混入を的確に判断することができ
る。[Means for Solving the Problems] A pulse wave analyzing circuit for measuring a pulse wave of a living body and judging whether or not a noise component is mixed in the measured pulse wave data. A pulse wave measurement device comprising: a pulse wave analysis circuit, after obtaining a velocity pulse wave by differentiating a pulse wave continuously measured for an arbitrary predetermined time, the velocity pulse wave for each pulse The peak value of the amplitude is calculated, and the mixing of the noise component is determined according to the variation of the calculated peak value. According to this configuration, since the peak value of the amplitude is obtained from the velocity pulse wave, the peak value can be calculated more accurately, so that the mixing of the noise component can be accurately determined according to the variation of the peak value. .
【０００５】（請求項２の手段）請求項１に記載した脈
波計測装置において、脈波解析回路は、ピーク値のばら
つきを示す指標を数値化し、その数値が既定値より大き
い場合に、計測された脈波データにノイズ成分が含まれ
ていると判断する。この場合、ばらつきを示す指標（数
値）を既定値と比較することで、容易にノイズ成分が混
入しているか否かを判断することができる。According to a second aspect of the present invention, in the pulse wave measuring apparatus according to the first aspect, the pulse wave analyzing circuit quantifies an index indicating a variation in the peak value and measures the index when the numerical value is larger than a predetermined value. It is determined that the pulse wave data contains a noise component. In this case, by comparing the index (numerical value) indicating the variation with a predetermined value, it can be easily determined whether or not the noise component is mixed.
【０００６】（請求項３の手段）請求項２に記載した脈
波計測装置において、脈波解析回路は、ピーク値のばら
つきを示す指標を統計処理によって数値化する。この場
合、一般的な統計処理により、ピーク値のばらつきの分
布を統計的に数値化することができる。According to a third aspect of the present invention, in the pulse wave measuring device according to the second aspect, the pulse wave analyzing circuit digitizes an index indicating a variation in the peak value by statistical processing. In this case, the distribution of the dispersion of the peak values can be statistically digitized by general statistical processing.
【０００７】（請求項４の手段）請求項３に記載した脈
波計測装置において、脈波解析回路は、ピーク値のばら
つきを示す指標を分散（統計処理の一例）から算出して
数値化している。According to a fourth aspect of the present invention, in the pulse wave measuring apparatus according to the third aspect, the pulse wave analyzing circuit calculates an index indicating a variation in the peak value from variance (an example of statistical processing) and converts the index into a numerical value. I have.
【０００８】（請求項５の手段）請求項３に記載した脈
波計測装置において、脈波解析回路は、ピーク値のばら
つきを示す指標を標準偏差（統計処理の一例）から算出
して数値化している。According to a fifth aspect of the present invention, in the pulse wave measuring device according to the third aspect, the pulse wave analyzing circuit calculates an index indicating a variation in the peak value from a standard deviation (an example of statistical processing) and converts the index into a numerical value. ing.
【０００９】（請求項６の手段）請求項３に記載した脈
波計測装置において、脈波解析回路は、ピーク値のばら
つきを示す指標を算出されたピーク値の最大値と最小値
との差（統計処理の一例）から算出して数値化してい
る。According to a sixth aspect of the present invention, in the pulse wave measuring apparatus according to the third aspect, the pulse wave analyzing circuit calculates a difference between the maximum value and the minimum value of the calculated peak value as an index indicating the variation of the peak value. It is calculated from (an example of statistical processing) and quantified.
【００１０】（請求項７の手段）生体の脈波を計測し、
その計測された脈波データにノイズ成分が混入している
か否かを判断するための脈波解析回路を備えた脈波計測
装置であって、脈波解析回路は、任意の一定時間連続し
て計測した脈波を微分して速度脈波を求めた後、一拍毎
の脈に対する速度脈波の振幅のピーク値を算出し、算出
されたそれぞれのピーク値を規格化し、その規格化され
たピーク値のばらつきに応じてノイズ成分の混入を判断
する。この構成によれば、算出されたピーク値を規格化
することにより、使用する脈波計測装置の計測単位等が
異なる場合でも、それぞれの脈波計測装置で算出された
ピーク値を定常的に使用することができる。(Means of claim 7) The pulse wave of the living body is measured,
A pulse wave measurement device including a pulse wave analysis circuit for determining whether a noise component is mixed in the measured pulse wave data, wherein the pulse wave analysis circuit is continuously arbitrarily constant time. After calculating the velocity pulse wave by differentiating the measured pulse wave, the peak value of the amplitude of the velocity pulse wave with respect to each pulse is calculated, and the calculated peak values are normalized. It is determined whether noise components are mixed in accordance with the variation in the peak value. According to this configuration, by normalizing the calculated peak values, the peak values calculated by the respective pulse wave measurement devices are constantly used even when the measurement unit of the pulse wave measurement device to be used is different. can do.
【００１１】（請求項８の手段）請求項７に記載した脈
波計測装置において、脈波解析回路は、算出されたそれ
ぞれのピーク値を、その各ピーク値の平均値で規格化す
る。In the pulse wave measuring apparatus according to the present invention, the pulse wave analyzing circuit normalizes each of the calculated peak values by an average value of the respective peak values.
【００１２】（請求項９の手段）請求項７及び８に記載
した脈波計測装置において、脈波解析回路は、規格化さ
れたピーク値のばらつきを示す指標を数値化し、その数
値が既定値より大きい場合に、計測された脈波データに
ノイズ成分が含まれていると判断する。この場合、ばら
つきを示す指標（数値）を既定値と比較することで、容
易にノイズ成分が混入しているか否かを判断することが
できる。According to a ninth aspect of the present invention, in the pulse wave measuring device according to the seventh and eighth aspects, the pulse wave analyzing circuit digitizes an index indicating a variation of the standardized peak value, and the numerical value is set to a predetermined value. If it is larger, it is determined that the measured pulse wave data contains a noise component. In this case, by comparing the index (numerical value) indicating the variation with a predetermined value, it can be easily determined whether or not the noise component is mixed.
【００１３】（請求項１０の手段）請求項９に記載した
脈波計測装置において、脈波解析回路は、規格化された
ピーク値のばらつきを示す指標を統計処理によって数値
化している。この場合、一般的な統計処理により、規格
化されたピーク値のばらつきの分布を統計的に数値化す
ることができる。According to a tenth aspect of the present invention, in the pulse wave measuring device according to the ninth aspect, the pulse wave analysis circuit digitizes an index indicating a standardized variation of the peak value by statistical processing. In this case, the distribution of the normalized peak value variation can be statistically digitized by general statistical processing.
【００１４】（請求項１１の手段）請求項１０に記載し
た脈波計測装置において、脈波解析回路は、規格化され
たピーク値のばらつきを示す指標を分散（統計処理の一
例）から算出して数値化している。According to a tenth aspect of the present invention, in the pulse wave measuring device according to the tenth aspect, the pulse wave analyzing circuit calculates an index indicating a variation of the normalized peak value from a variance (an example of statistical processing). And digitized.
【００１５】（請求項１２の手段）請求項１０に記載し
た脈波計測装置において、脈波解析回路は、規格化され
たピーク値のばらつきを示す指標を標準偏差（統計処理
の一例）から算出して数値化している。According to a twelfth aspect of the present invention, in the pulse wave measuring device according to the tenth aspect, the pulse wave analysis circuit calculates an index indicating a variation in the normalized peak value from a standard deviation (an example of statistical processing). And digitized.
【００１６】（請求項１３の手段）請求項１０に記載し
た脈波計測装置において、脈波解析回路は、規格化され
たピーク値のばらつきを示す指標を算出されたピーク値
の最大値と最小値との差（統計処理の一例）から算出し
て数値化している。According to a thirteenth aspect of the present invention, in the pulse wave measuring apparatus according to the tenth aspect, the pulse wave analyzing circuit includes a maximum value and a minimum value of the calculated peak value, which are used to calculate an index indicating a standardized variation of the peak value. It is calculated from the difference from the value (an example of statistical processing) and quantified.
【００１７】[0017]
【発明の実施の形態】次に、本発明の実施の形態を実施
例に基づいて説明する。本実施例の脈波計測装置は、人
体の脈波を計測して医療診断や健康診断等に用いるもの
で、図４に示すように、人体の指１に取り付けて使用さ
れる脈波センサ２と、この脈波センサ２の検出結果に基
づいて脈波を計測するデータ処理装置３とを備える。な
お、医療診断及び健康診断とは、例えば脈拍や脈拍間隔
を解析して、不整脈や自律神経の異常を判断するもので
ある。Next, embodiments of the present invention will be described based on examples. The pulse wave measuring apparatus according to the present embodiment measures a pulse wave of a human body and is used for medical diagnosis, health diagnosis, and the like. As shown in FIG. 4, a pulse wave sensor 2 attached to a finger 1 of a human body is used. And a data processing device 3 for measuring a pulse wave based on the detection result of the pulse wave sensor 2. Note that the medical diagnosis and the health diagnosis are, for example, analyzing a pulse and a pulse interval to determine an arrhythmia or an abnormality of an autonomic nerve.
【００１８】脈波センサ２では、図４に示すように、発
光素子４と受光素子５を備える周知の反射型センサであ
り、発光素子４から指１に向かって光が照射されると、
光の一部が指１の内部を通る毛細動脈１ａに当たって毛
細動脈１ａを流れる血液中のヘモグロビンに吸収され、
残りの光が毛細動脈１ａで反射して散乱し、一部が受光
素子５に入射する。この時、血液の脈動により、毛細動
脈１ａにあるヘモグロビンの量が波動的に変化するの
で、ヘモグロビンに吸収される光も波動的に変化する。
その結果、毛細動脈１ａで反射して受光素子５で検出さ
れる受光量が変化し、その受光量の変化を脈波情報（例
えば電圧信号）としてデータ処理装置３に出力してい
る。As shown in FIG. 4, the pulse wave sensor 2 is a well-known reflection type sensor having a light emitting element 4 and a light receiving element 5, and when light is emitted from the light emitting element 4 toward the finger 1,
Part of the light impinges on the capillary artery 1a passing through the inside of the finger 1 and is absorbed by hemoglobin in the blood flowing through the capillary artery 1a,
The remaining light is reflected and scattered by the capillary artery 1a, and a part of the light enters the light receiving element 5. At this time, the amount of hemoglobin in the capillary artery 1a changes in a wave-like manner due to the pulsation of blood, so that the light absorbed by the hemoglobin also changes in a wave-like manner.
As a result, the amount of received light reflected by the capillary artery 1a and detected by the light receiving element 5 changes, and the change in the amount of received light is output to the data processing device 3 as pulse wave information (for example, a voltage signal).
【００１９】データ処理装置３は、本発明の脈波解析回
路を構成するマイクロコンピュータを内蔵している。即
ち、マイクロコンピュータには、脈波センサ２で検出さ
れた脈波情報にノイズ成分が乗っているか否かを検出す
るためのノイズ検出プログラムが組み込まれている。以
下に、ノイズ検出の処理手順を図１に示すフローチャー
トに基づいて説明する。The data processing device 3 has a built-in microcomputer constituting the pulse wave analysis circuit of the present invention. That is, the microcomputer incorporates a noise detection program for detecting whether or not a noise component is included in the pulse wave information detected by the pulse wave sensor 2. Hereinafter, the processing procedure of the noise detection will be described based on the flowchart shown in FIG.
【００２０】まず、脈波センサ２で検出された脈波情報
に基づいて、一定時間（アプリケーションによるが例え
ば１０秒）脈波を計測する（Ｓ１０）。続いて、計測し
た脈波を微分して速度脈波を求める（Ｓ２０）。更に、
計測した一定時間内において、一拍毎の脈に対する速度
脈波の振幅のピーク値を算出する（Ｓ３０）。ここで、
速度脈波の振幅のピーク値の計測単位及び絶対値は、脈
波計測装置に依存するので、算出した各ピーク値を各ピ
ーク値の平均値で規格化する（Ｓ４０）。First, based on the pulse wave information detected by the pulse wave sensor 2, a pulse wave is measured for a predetermined time (for example, 10 seconds depending on the application) (S10). Next, a velocity pulse wave is obtained by differentiating the measured pulse wave (S20). Furthermore,
Within the measured fixed time, the peak value of the amplitude of the velocity pulse wave for each pulse is calculated (S30). here,
Since the measurement unit and the absolute value of the peak value of the amplitude of the velocity pulse wave depend on the pulse wave measuring device, each calculated peak value is normalized by the average value of each peak value (S40).
【００２１】続いて、規格化されたピーク値のばらつき
を示す指標を数値化するために統計処理を行う（Ｓ５
０）。具体的には、例えば分散あるいは標準偏差によっ
て算出された数値をばらつきの指標として用いる。続い
て、数値化されたピーク値のばらつき（指標）が既定値
よりも小さいか否かを判定する（Ｓ６０）。なお、既定
値は、統計処理の方法（例えば分散、標準偏差等）に対
応して、それぞれ異なる値が設定されることは言うまで
もない。Subsequently, statistical processing is performed to digitize an index indicating the variation of the standardized peak value (S5).
0). Specifically, for example, a numerical value calculated based on the variance or the standard deviation is used as an index of the variance. Subsequently, it is determined whether or not the variation (index) of the quantified peak value is smaller than a predetermined value (S60). It is needless to say that different default values are set according to the statistical processing method (for example, variance, standard deviation, etc.).
【００２２】上記Ｓ６０の判定結果がＹＥＳの場合、つ
まりピーク値のばらつきが既定値より小さい場合は、脈
波センサ２で検出された脈波情報にノイズ成分が乗って
いないものと判断し、医療診断あるいは健康診断に係わ
るプログラムを実行する（Ｓ７０）。一方、Ｓ６０の判
定結果がＮＯの場合、つまりピーク値のばらつきが既定
値より大きい場合は、脈波センサ２で検出された脈波情
報にノイズ成分が乗っているものと判断し、Ｓ１０へ戻
って再度計測を行う。If the determination result in S60 is YES, that is, if the variation of the peak value is smaller than the predetermined value, it is determined that the noise component is not included in the pulse wave information detected by the pulse wave sensor 2, and the medical A program related to diagnosis or health check is executed (S70). On the other hand, if the determination result in S60 is NO, that is, if the variation of the peak value is larger than the predetermined value, it is determined that the pulse wave information detected by the pulse wave sensor 2 has a noise component, and the process returns to S10. And measure again.
【００２３】ここで、図２に示すように、ノイズ成分が
乗っていない正常な脈波での速度脈波のピーク値のばら
つきを算出すると、標準偏差で０．０５７となる。一
方、図３に示すように、ノイズ成分の乗った脈波での速
度脈波のピーク値のばらつきを算出すると、標準偏差で
０．３２１となる。従って、ピーク値のばらつきを標準
偏差によって求めた場合、ばらつきを判定するための既
定値を、例えば０．１〜０．１５に設定することで、ノ
イズの乗った脈波を検出することができる。Here, as shown in FIG. 2, when the variation of the peak value of the velocity pulse wave in the normal pulse wave on which the noise component does not ride is calculated, the standard deviation is 0.057. On the other hand, as shown in FIG. 3, when the variation of the peak value of the velocity pulse wave in the pulse wave with the noise component is calculated, the standard deviation is 0.321. Therefore, when the variation of the peak value is obtained by the standard deviation, the default value for determining the variation is set to, for example, 0.1 to 0.15, so that the pulse wave with noise can be detected. .
【００２４】（本実施例の効果）本実施例の脈波計測装
置によれば、一拍毎の脈に対する速度脈波を求めること
で脈波のピーク値を的確に検出でき、そのピーク値のば
らつきを算出することにより、脈波センサ２で検出され
た脈波情報にノイズ成分が乗っているか否かを的確に判
断することができる。その結果、ノイズ成分が乗った脈
波データを正常な脈波データとして診断等に利用するこ
とを防止でき、誤診の発生を未然に防ぐことができる。(Effects of the present embodiment) According to the pulse wave measuring apparatus of the present embodiment, the peak value of the pulse wave can be accurately detected by obtaining the velocity pulse wave for each pulse, and the peak value of the pulse value can be detected. By calculating the variation, it is possible to accurately determine whether or not the pulse wave information detected by the pulse wave sensor 2 includes a noise component. As a result, it is possible to prevent the pulse wave data on which the noise component is superimposed from being used as normal pulse wave data for diagnosis or the like, and to prevent erroneous diagnosis.
【００２５】また、計測された脈波データにノイズ成分
が乗っていると判断された場合でも、図５に示すよう
に、Ｓ８０でノイズ除去処理（例えばデジタルフィルタ
等）を行うことにより、ノイズ成分が乗った脈波なりの
診断プログラム（Ｓ９０）を適用することができる。更
に、本実施例のノイズ検出処理を連続的に繰り返し行う
ことにより、健康状態等を継続的にモニターすることが
できる。Even if it is determined that a noise component is present in the measured pulse wave data, as shown in FIG. 5, the noise component is removed by performing a noise removal process (for example, a digital filter) in S80. Can be applied to the pulse wave diagnostic program (S90). Further, by continuously and repeatedly performing the noise detection processing of the present embodiment, it is possible to continuously monitor the health condition and the like.
【００２６】（変形例）上記実施例では、速度脈波のピ
ーク値を、各ピーク値の平均値で規格化する例を示した
が、その他の手法によって規格化しても良い。なお、必
ずしもピーク値を規格化する必要はなく、例えば使用す
る脈波計測装置が特定されていれば、ピーク値を規格化
する処理（Ｓ４０）を廃止しても良い。(Modification) In the above embodiment, an example is shown in which the peak value of the velocity pulse wave is normalized by the average value of each peak value. However, the peak value may be normalized by another method. Note that it is not always necessary to standardize the peak value. For example, if the pulse wave measurement device to be used is specified, the process of normalizing the peak value (S40) may be omitted.
【００２７】ピーク値のばらつきを数値化するための統
計処理として、分散あるいは標準偏差を例に示したが、
それ以外の統計処理として、例えばピーク値の最大値と
最小値との差からピーク値のばらつきを数値化すること
もできる。上記実施例で説明した脈波センサ２は、反射
型であるが、指を挟んで発光素子４と受光素子５とを対
向して配置する透過型の脈波センサ２でも良い。また、
脈波センサ２は、指に取り付けるだけでなく、例えば耳
たぶに装着するタイプでも良い。The variance or the standard deviation has been shown as an example of the statistical processing for quantifying the dispersion of the peak values.
As other statistical processing, for example, the variation of the peak value can be quantified from the difference between the maximum value and the minimum value of the peak value. The pulse wave sensor 2 described in the above embodiment is of a reflection type, but may be a transmission type pulse wave sensor 2 in which a light emitting element 4 and a light receiving element 5 are arranged to face each other with a finger therebetween. Also,
The pulse wave sensor 2 may be of a type that is not only attached to a finger but also attached to, for example, an earlobe.
【図１】ノイズ検出の処理手順を示すフローチャートで
ある。FIG. 1 is a flowchart illustrating a noise detection processing procedure.
【図２】正常な脈波と速度脈波を示す測定グラフであ
る。FIG. 2 is a measurement graph showing a normal pulse wave and a velocity pulse wave.
【図３】ノイズ成分が乗った脈波と速度脈波を示す測定
グラフである。FIG. 3 is a measurement graph showing a pulse wave with a noise component and a velocity pulse wave.
【図４】指と脈波センサの断面図である。FIG. 4 is a sectional view of a finger and a pulse wave sensor.
【図５】ノイズ検出の処理手順を示すフローチャートで
ある。FIG. 5 is a flowchart illustrating a processing procedure of noise detection.
２ 脈波センサ ３ データ処理装置（脈波解析回路） 2 pulse wave sensor 3 data processing device (pulse wave analysis circuit)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 河内 泰司 愛知県刈谷市昭和町１丁目１番地 株式会 社デンソー内 Ｆターム(参考） 4C017 AA09 AB03 AC26 BC14 BC23 FF15 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yasushi Kawachi 1-1-1 Showa-cho, Kariya-shi, Aichi F-term in DENSO Corporation (reference) 4C017 AA09 AB03 AC26 BC14 BC23 FF15
Claims (13)
データにノイズ成分が混入しているか否かを判断するた
めの脈波解析回路を備えた脈波計測装置であって、 前記脈波解析回路は、 任意の一定時間連続して計測した脈波を微分して速度脈
波を求めた後、 一拍毎の脈に対する前記速度脈波の振幅のピーク値を算
出し、 その算出されたピーク値のばらつきに応じてノイズ成分
の混入を判断することを特徴とする脈波計測装置。1. A pulse wave measuring apparatus comprising a pulse wave analyzing circuit for measuring a pulse wave of a living body and determining whether or not a noise component is mixed in the measured pulse wave data, The pulse wave analysis circuit calculates a velocity pulse wave by differentiating a pulse wave continuously measured for an arbitrary predetermined time, and then calculates a peak value of an amplitude of the velocity pulse wave with respect to each pulse. A pulse wave measuring apparatus characterized in that it is determined whether or not a noise component is mixed in accordance with a variation in a calculated peak value.
て、 前記脈波解析回路は、前記ピーク値のばらつきを示す指
標を数値化し、その数値が既定値より大きい場合に、計
測された脈波データにノイズ成分が含まれていると判断
することを特徴とする脈波計測装置。2. The pulse wave measuring device according to claim 1, wherein the pulse wave analyzing circuit digitizes an index indicating the variation of the peak value, and when the index is larger than a predetermined value, the measured pulse wave is measured. A pulse wave measuring apparatus, which determines that a noise component is included in wave data.
て、 前記脈波解析回路は、前記ピーク値のばらつきを示す指
標を統計処理によって数値化することを特徴とする脈波
計測装置。3. The pulse wave measuring device according to claim 2, wherein the pulse wave analyzing circuit digitizes an index indicating the variation of the peak value by statistical processing.
て、 前記脈波解析回路は、前記ピーク値のばらつきを示す指
標を分散から算出することを特徴とする脈波計測装置。4. The pulse wave measuring apparatus according to claim 3, wherein the pulse wave analyzing circuit calculates an index indicating the variation of the peak value from a variance.
て、 前記脈波解析回路は、前記ピーク値のばらつきを示す指
標を標準偏差から算出することを特徴とする脈波計測装
置。5. The pulse wave measuring apparatus according to claim 3, wherein the pulse wave analyzing circuit calculates an index indicating the variation of the peak value from a standard deviation.
て、 前記脈波解析回路は、前記ピーク値のばらつきを示す指
標を算出された前記ピーク値の最大値と最小値との差か
ら算出することを特徴とする脈波計測装置。6. The pulse wave measurement device according to claim 3, wherein the pulse wave analysis circuit calculates an index indicating the variation of the peak value from a difference between the calculated maximum value and the minimum value of the peak value. A pulse wave measuring device.
データにノイズ成分が混入しているか否かを判断するた
めの脈波解析回路を備えた脈波計測装置であって、 前記脈波解析回路は、 任意の一定時間連続して計測した脈波を微分して速度脈
波を求めた後、 一拍毎の脈に対する前記速度脈波の振幅のピーク値を算
出し、 算出されたそれぞれのピーク値を規格化し、 その規格化されたピーク値のばらつきに応じてノイズ成
分の混入を判断することを特徴とする脈波計測装置。7. A pulse wave measuring apparatus comprising a pulse wave analyzing circuit for measuring a pulse wave of a living body and judging whether or not a noise component is mixed in the measured pulse wave data, The pulse wave analysis circuit calculates a velocity pulse wave by differentiating a pulse wave continuously measured for a given period of time, and then calculates a peak value of an amplitude of the velocity pulse wave with respect to each pulse. A pulse wave measuring apparatus characterized by normalizing each of the specified peak values, and judging the inclusion of a noise component according to the variation of the standardized peak values.
て、 前記脈波解析回路は、前記算出されたそれぞれのピーク
値を、その各ピーク値の平均値で規格化することを特徴
とする脈波計測装置。8. The pulse wave measuring device according to claim 7, wherein the pulse wave analyzing circuit normalizes each of the calculated peak values by an average of the respective peak values. Pulse wave measuring device.
おいて、 前記脈波解析回路は、前記規格化されたピーク値のばら
つきを示す指標を数値化し、その数値が既定値より大き
い場合に、計測された脈波データにノイズ成分が含まれ
ていると判断することを特徴とする脈波計測装置。9. The pulse wave measuring device according to claim 7, wherein said pulse wave analysis circuit digitizes an index indicating the variation of said normalized peak value, and said numerical value is larger than a predetermined value. A pulse wave measurement device that determines that noise components are included in the measured pulse wave data.
て、 前記脈波解析回路は、前記規格化されたピーク値のばら
つきを示す指標を統計処理によって数値化することを特
徴とする脈波計測装置。10. The pulse wave measuring apparatus according to claim 9, wherein said pulse wave analyzing circuit digitizes an index indicating a variation of said standardized peak value by statistical processing. Measuring device.
いて、 前記脈波解析回路は、前記規格化されたピーク値のばら
つきを示す指標を分散から算出することを特徴とする脈
波計測装置。11. The pulse wave measuring device according to claim 10, wherein the pulse wave analyzing circuit calculates an index indicating the variation of the standardized peak value from a variance. .
いて、 前記脈波解析回路は、前記規格化されたピーク値のばら
つきを示す指標を標準偏差から算出することを特徴とす
る脈波計測装置。12. The pulse wave measuring apparatus according to claim 10, wherein said pulse wave analyzing circuit calculates an index indicating said standardized variation of the peak value from a standard deviation. apparatus.
いて、 前記脈波解析回路は、前記規格化されたピーク値のばら
つきを示す指標を算出された前記ピーク値の最大値と最
小値との差から算出することを特徴とする脈波計測装
置。13. The pulse wave measurement device according to claim 10, wherein the pulse wave analysis circuit calculates a maximum value and a minimum value of the peak value for which an index indicating the variation of the normalized peak value is calculated. A pulse wave measuring device, wherein the pulse wave is calculated from the difference between the two.
Priority Applications (2)
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|---|---|---|---|
| JP24252899A JP3835073B2 (en) | 1999-08-30 | 1999-08-30 | Pulse wave measuring device |
| US09/649,967 US6496723B1 (en) | 1999-08-30 | 2000-08-28 | Method of obtaining information that corresponds to electrocardiogram of human body from pulse wave thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24252899A JP3835073B2 (en) | 1999-08-30 | 1999-08-30 | Pulse wave measuring device |
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| JP3835073B2 JP3835073B2 (en) | 2006-10-18 |
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|---|---|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008201060A (en) * | 2007-02-22 | 2008-09-04 | Nissei Plastics Ind Co | Method and device of determining molding conditions in injection molding device |
| EP2151189A1 (en) * | 2007-06-08 | 2010-02-10 | Panasonic Corporation | Pulse wave detection device, apparatus control device, and pulse wave detection method |
| US8167800B2 (en) | 2007-07-05 | 2012-05-01 | Kabushiki Kaisha Toshiba | Apparatus and method for processing pulse waves |
| US8507281B2 (en) | 2003-01-07 | 2013-08-13 | Samsung Electronics Co., Ltd. | Method of removing abnormal data and blood component spectroscopy analysis system employing the same |
| JPWO2018147192A1 (en) * | 2017-02-13 | 2019-11-07 | 学校法人帝京大学 | Pulse wave detection apparatus and method |
-
1999
- 1999-08-30 JP JP24252899A patent/JP3835073B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8507281B2 (en) | 2003-01-07 | 2013-08-13 | Samsung Electronics Co., Ltd. | Method of removing abnormal data and blood component spectroscopy analysis system employing the same |
| JP2008201060A (en) * | 2007-02-22 | 2008-09-04 | Nissei Plastics Ind Co | Method and device of determining molding conditions in injection molding device |
| JP4721454B2 (en) * | 2007-02-22 | 2011-07-13 | 日精樹脂工業株式会社 | Method for determining molding conditions in injection molding apparatus and injection molding apparatus |
| EP2151189A1 (en) * | 2007-06-08 | 2010-02-10 | Panasonic Corporation | Pulse wave detection device, apparatus control device, and pulse wave detection method |
| EP2151189A4 (en) * | 2007-06-08 | 2014-01-22 | Panasonic Corp | Pulse wave detection device, apparatus control device, and pulse wave detection method |
| US8167800B2 (en) | 2007-07-05 | 2012-05-01 | Kabushiki Kaisha Toshiba | Apparatus and method for processing pulse waves |
| JPWO2018147192A1 (en) * | 2017-02-13 | 2019-11-07 | 学校法人帝京大学 | Pulse wave detection apparatus and method |
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| Publication number | Publication date |
|---|---|
| JP3835073B2 (en) | 2006-10-18 |
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