JPH09117440A - Method for measuring stress and device therefor - Google Patents
Method for measuring stress and device thereforInfo
- Publication number
- JPH09117440A JPH09117440A JP7278872A JP27887295A JPH09117440A JP H09117440 A JPH09117440 A JP H09117440A JP 7278872 A JP7278872 A JP 7278872A JP 27887295 A JP27887295 A JP 27887295A JP H09117440 A JPH09117440 A JP H09117440A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- human body
- measuring
- stress
- acceleration sensor
- 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.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、人体のストレス
度、更に詳しくは、人体の末端部の微小振動を測定する
ことによる、ストレス度の測定方法及び測定装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stress level of a human body, and more particularly to a stress level measuring method and apparatus by measuring minute vibrations at the end of the human body.
【０００２】[0002]
【従来の技術】従来、人体の受けたストレスの度合いを
測定する方法としては、例えば特開昭６１−３７１３４
号公報に、人体の末端部を液晶に接触させ、末端温度か
らストレスの度合いを測定し、評価する方法が開示され
ている。また、例えば特開昭６３−２８３６２６号公報
に、皮膚の電気抵抗、即ち発汗による電気抵抗変化を測
定の原理とする測定方法が開示されている。現在最も一
般的に使用される方法として、アンケート方式による評
価方法がある。又、近時、ストレス度を計量化する試み
として、脳波測定によって計測し評価する方法が開発さ
れている。2. Description of the Related Art Conventionally, as a method for measuring the degree of stress received by a human body, for example, Japanese Patent Laid-Open No. 61-37134 has been proposed.
Japanese Patent Publication discloses a method of evaluating the stress level by measuring the degree of stress from the terminal temperature by bringing the terminal part of the human body into contact with liquid crystal. Further, for example, Japanese Patent Application Laid-Open No. 63-283626 discloses a measuring method in which the principle of measurement is the electric resistance of the skin, that is, the change in electric resistance due to perspiration. The most commonly used method at present is a questionnaire-based evaluation method. In recent years, as an attempt to quantify the stress level, a method of measuring and evaluating by an electroencephalogram has been developed.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記特開昭６
１−３７１３４号公報に開示されている方法にあって
は、末梢部位の皮膚温度の変化をストレス度の判定に用
いているが、末梢部位の皮膚温度は、単にストレスだけ
でなく、運動や環境の温度等の影響を受けるものであ
る。特に人体の末端部の温度は環境温度により左右され
やすく、運動による発汗の影響、それに伴う皮膚の含水
率の変化、測定部位の温度・湿度等の影響を受けて大き
く変化する場合がある。However, the above-mentioned Japanese Unexamined Patent Application Publication No.
In the method disclosed in Japanese Laid-Open Patent Publication No. 1-37134, a change in skin temperature at a peripheral site is used to determine the degree of stress. However, the skin temperature at a peripheral site is not limited to simply stress, but also exercise and environment. It is affected by the temperature and other factors. In particular, the temperature of the terminal part of the human body is easily influenced by the environmental temperature, and there are cases in which it greatly changes due to the influence of sweating due to exercise, the accompanying change in the water content of the skin, and the temperature and humidity of the measurement site.
【０００４】また、アンケート方式による評価方法が有
るが、被評価者の立場により、例えば独身者、学生、妻
帯者、会社員等により、アンケート項目に評価困難な項
目が混入したり、或いは矛盾が生じる場合が有る。ま
た、被評価者側に、悪く思われたくない等の意識が働く
場合もあり、その場合、客観的な回答が得られないこと
も有る。Although there is an evaluation method based on a questionnaire method, depending on the position of the person to be evaluated, for example, a single person, a student, a wife, a company employee, etc., items that are difficult to evaluate are mixed in the questionnaire items, or there is a contradiction. It may occur. In addition, the evaluated person may be conscious of not wanting to feel bad, and in that case, an objective answer may not be obtained.
【０００５】さらに、脳波測定による方法は、装置が大
がかりになったり、電極の貼りつけ等の作業が大がかり
であり、また電極の貼りつけ位置によってもデータが変
動する場合があり、現状では、脳波の意味付けが困難で
あり、このため、一般的には使用が限定されている。Further, in the method of measuring an electroencephalogram, the size of the device is large and the work such as sticking electrodes is also large, and the data may change depending on the sticking position of the electrodes. Is difficult to define and, as a result, its use is generally limited.
【０００６】本発明は、この様な問題点を解消するため
になされたもので、運動や環境温度等の影響即ち、運動
による発汗の影響、皮膚の含水率、測定部位の温度・湿
度等の影響を受けない、更に被評価者の立場により、例
えば独身者、学生、妻帯者、会社員等によりアンケート
項目に矛盾が生じない、また大がかりな測定システムを
必要としない、ストレス度測定方法及び測定装置を提供
することを目的とするものである。The present invention has been made in order to solve such a problem, and it is possible to determine the effects of exercise, environmental temperature, etc., that is, the effects of perspiration due to exercise, the moisture content of the skin, the temperature and humidity of the measurement site, etc. Stress level measurement method and measurement that is not affected, and does not cause inconsistency in questionnaire items due to the standpoint of the evaluated person, such as single person, student, wife, office worker, etc., and does not require a large-scale measurement system The purpose is to provide a device.
【０００７】[0007]
【課題を解決するための手段】請求項１記載の本発明
は、人体の末端部に取付けて該人体の末端部の微小振動
を測定する加速度センサーと、該加速度センサーより得
られた信号を解析する処理部より構成される、ストレス
度の測定装置をその要旨とするものである。According to a first aspect of the present invention, an acceleration sensor which is attached to an end portion of a human body to measure a minute vibration at the end portion of the human body, and a signal obtained from the acceleration sensor are analyzed. The gist of the present invention is a stress level measuring device which is composed of a processing unit.
【０００８】又、請求項２記載の本発明は、人体の末端
部の微小振動を測定し、上記処理部より得られた振動ス
ペクトルによりストレス度を測定する方法をその要旨と
するものである。The present invention according to claim 2 has as its gist a method of measuring a microvibration at a terminal portion of a human body and measuring a stress level from a vibration spectrum obtained from the processing section.
【０００９】又、請求項３記載の本発明は、微小振動
を、手の指先位置で測定する請求項１記載のストレス度
測定方法をその要旨とするものである。Further, the gist of the present invention according to claim 3 is a stress level measuring method according to claim 1, which measures a minute vibration at a fingertip position of a hand.
【００１０】一般に、人が不安もしくは緊張状態に陥る
と、人体はストレスを受け、血液は人体の末端部から離
れ、重要な内部器官に集まり、このため個人の手が冷た
くなる或いは、細かく振動する等の生理現象がおこる。
この現象は、個人が普通気付いていない生理的な現象で
あるが、皮膚の電気抵抗に対して影響を及ぼす。Generally, when a person falls into anxiety or tension, the human body is stressed, blood separates from the distal end of the human body, and collects in important internal organs, which makes the individual's hand cold or vibrates finely. And other physiological phenomena occur.
This phenomenon is a physiological phenomenon that an individual normally does not notice, but affects the electrical resistance of the skin.
【００１１】このため、人体の末端部に取付けて該人体
の末端部の微小振動を測定する加速度センサーにより、
人体のストレス度を測定する場合、人体の末端部の微小
振動を測定する加速度センサーから得られたデータよ
り、人体のストレス度を測定する。加速度センサーに加
え、更に該人体の脈波間隔を測定する脈波計を有する装
置により、微小振動と脈波間隔から人体のストレス度を
測定すると、前記のようなストレスを受けた際の生理現
象をより良く反映できる。For this reason, the acceleration sensor attached to the end of the human body and measuring the minute vibration at the end of the human body,
When measuring the stress level of the human body, the stress level of the human body is measured from data obtained from an acceleration sensor that measures minute vibrations at the end of the human body. In addition to an acceleration sensor, a device having a pulse wave meter for measuring the pulse wave interval of the human body is used to measure the stress level of the human body from minute vibrations and pulse wave intervals. Can be better reflected.
【００１２】本発明において、人体の末端部に取付けて
該人体の末端部の微小振動を測定する加速度センサー１
は、例えば図４に示すように、測定位置である指先に装
着されて、その微小振動を電気信号に変換して出力す
る。加速度センサー１より出力された振動スペクトル信
号は、アンプ（増幅器）２により増幅され、次にフィル
ター３により必要な周波数帯域巾を抽出され、最後にＡ
／Ｄコンバーター４に入力されてディジタル化されたあ
と、次段のフーリエ変換器５によりフーリエ変換され
て、周波数領域の値に変換され、振動スペクトルが得ら
れる。According to the present invention, the acceleration sensor 1 is attached to the end of the human body and measures the microvibration at the end of the human body.
Is attached to a fingertip, which is a measurement position, for example, as shown in FIG. 4, and converts the minute vibration into an electric signal and outputs the electric signal. The vibration spectrum signal output from the acceleration sensor 1 is amplified by an amplifier (amplifier) 2, then a required frequency bandwidth is extracted by a filter 3, and finally A
After being input to the / D converter 4 and digitized, it is Fourier transformed by the Fourier transformer 5 in the next stage and converted into a value in the frequency domain to obtain a vibration spectrum.
【００１３】ストレス度測定方法及び測定装置において
は、得られた振動スペクトルから２０〜３５HZの振動領
域を取り出し、その振動強度から人体のストレス度を測
定する。[0013] In the stress measurement method and measurement apparatus, the vibration region of 20~35H from the obtained vibrational spectra Z was removed to measure the human body stress level from the vibration intensity.
【００１４】また、問診表による診断においては、例え
ば「激しい運動をしたか。」或いは「毎日、良く眠れる
か。」、「暴飲、暴食をしていないか。」等の問診を、
ストレス度測定方法及び測定装置と連動させることによ
り、診断を側面から補佐することが出来る。或いは、上
記問診の内容毎に点数を設定し、ストレス度を数値化す
る方法をとることも可能である。この場合、「ストレス
度が高い。」と「振動スペクトルが高い。」とは同一の
内容である。Further, in the diagnosis based on the medical inquiry table, for example, the medical inquiry such as "Do you exercise vigorously?" Or "Can you sleep well every day?"
The diagnosis can be assisted from the side by linking it with the stress level measuring method and measuring device. Alternatively, it is also possible to set a score for each of the contents of the above-mentioned inquiry and to take a method of quantifying the stress level. In this case, "the stress level is high" and "the vibration spectrum is high" have the same contents.
【００１５】[0015]
【発明の実施の形態】本発明の実施の形態を添付図面を
参照して説明する。一般に、人体の脈波間隔、微小振動
は、人体の疲労と深く関係し、自律神経失調症の指標と
もされる。図１は、本発明の、振動スペクトルから２０
〜３５HZの振動領域を取り出し、その振動強度から人体
のストレス度を測定するための、流れを示すブロック図
である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to the accompanying drawings. Generally, the pulse wave interval and minute vibration of the human body are closely related to fatigue of the human body and are also used as an index of autonomic dysfunction. FIG. 1 shows 20% of the vibration spectrum of the present invention.
Removed vibration area of ～35H Z, for measuring the human body stress level from the vibration intensity is a block diagram showing the flow.
【００１６】人体に装着された、微小振動を測定する加
速度センサー１は、その出力を増幅器２により増幅さ
れ、フィルタ３により必要周波数帯の信号のみを取り出
したあと、Ａ／Ｄコンバーター４により、ディジタル化
され、更にフーリエ変換器５によりフーリエ変換されて
周波数領域での値に変換され、図２に示す周波数領域で
の振動スペクトルが得られる。The acceleration sensor 1 mounted on the human body for measuring minute vibrations has its output amplified by an amplifier 2 and, after taking out only a signal in a required frequency band by a filter 3, digitally by an A / D converter 4. Then, the Fourier transform is performed by the Fourier transformer 5 to be converted into a value in the frequency domain, and the vibration spectrum in the frequency domain shown in FIG. 2 is obtained.
【００１７】この振動スペクトルから、２０〜３５HZの
振動領域を取り出し、その領域の振動強度から、人体の
ストレスの強度を測定する。[0017] From the vibration spectrum, taken out vibration area of 20～35H Z, from the vibration intensity of the region, measuring the intensity of the human stress.
【００１８】本発明の実施の形態において、図１に示す
構成を有する測定装置を用い、１５名の被試験者に対
し、平常時（CONTOROL) 、精神的負荷時（TASK：暗算を
３０分行う負荷をかけた直後）及び、その後１５分間安
静後（RECOVERY）の状態に分けて測定した。結果を図２
（負荷前）、図３（負荷後）に示す。図２、図３に示す
微小振動のパワースペクトル波形は、右手第２指に加速
度センサーを取付け、５msecの間隔でサンプリングされ
た結果を示している。In the embodiment of the present invention, the measurement apparatus having the configuration shown in FIG. 1 is used, and 15 test subjects are subjected to normal operation (CONTOROL) and mental stress (TASK: mental calculation for 30 minutes). Immediately after applying the load) and after resting for 15 minutes (RECOVERY), the measurement was performed separately. Figure 2 shows the results.
(Before loading) and FIG. 3 (after loading). The power spectrum waveforms of the minute vibrations shown in FIGS. 2 and 3 show the results obtained by mounting the acceleration sensor on the second finger of the right hand and sampling at intervals of 5 msec.
【００１９】図において、負荷前後のMIDDLE周波数（２
０〜３５HZ）のみ５％有意で、その強度が変化すること
が見出された。従って、この周波数における波形は、精
神的ストレスを反映していると判断出来る。In the figure, the MIDDLE frequency (2
0~35H Z) only 5% significance was found that the intensity varies. Therefore, it can be judged that the waveform at this frequency reflects mental stress.
【００２０】[0020]
【発明の効果】本発明のストレス度測定方法及び測定装
置は、人体の末端部の微小振動を測定し、そのデータか
らストレス度を測定するものであり、従来の、皮膚温度
を測定する方法、皮膚の電気抵抗を測定する方法に見ら
れたように、皮膚の状態による電気抵抗の変化、運動等
による皮膚への影響等に左右されず、客観的なデータを
得ることができる、簡易な装置により測定できる等の利
点を有する。更に、問診表を併用することにより、より
信頼性の高い測定が可能となる。EFFECT OF THE INVENTION The stress level measuring method and the stress level measuring device of the present invention are for measuring the microvibration at the end of the human body and measuring the stress level from the data. As seen in the method of measuring the electric resistance of the skin, a simple device that can obtain objective data without being affected by changes in the electric resistance due to the condition of the skin, the influence on the skin due to exercise, etc. It has the advantage that it can be measured by Furthermore, by using the questionnaire together, more reliable measurement becomes possible.
【００２１】[0021]
【図１】本発明の測定装置の構成を示す図である。FIG. 1 is a diagram showing a configuration of a measuring apparatus of the present invention.
【図２】本発明のストレス度測定方法及び測定装置の、
加速度センサーによる負荷前の振動スペクトルを示す図
である。FIG. 2 shows a stress level measuring method and measuring apparatus according to the present invention,
It is a figure which shows the vibration spectrum before a load by an acceleration sensor.
【図３】本発明のストレス度測定方法及び測定装置の、
加速度センサーによる負荷後の振動スペクトルを示す図
である。FIG. 3 shows a stress level measuring method and measuring apparatus according to the present invention,
It is a figure which shows the vibration spectrum after the load by an acceleration sensor.
【図４】本発明のストレス度測定方法及び測定装置の、
人体に加速度センサーを装着した状態の一例を示す図で
ある。 １ 加速度センサー ２ 増幅器 ３ フィルター ４ Ａ／Ｄコンバータ ５ フーリエ変換器FIG. 4 shows a stress level measuring method and a stress level measuring device according to the present invention,
It is a figure which shows an example of the state which attached the acceleration sensor to the human body. 1 Acceleration sensor 2 Amplifier 3 Filter 4 A / D converter 5 Fourier transformer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 久保田 康之 京都市南区上鳥羽上調子町２−２ 積水化 学工業株式会社内 (72)発明者 永田 晟 東京都大田区矢口１−29−３ ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuyuki Kubota 2-2 Kamitobaue Tonkocho, Minami-ku, Kyoto City Sekisui Chemical Co., Ltd. (72) Inventor Akira Nagata 1-29-3 Yaguchi, Ota-ku, Tokyo
Claims (3)
の微小振動を測定する加速度センサーと、該加速度セン
サーより得られた微小振動スペクトル信号を解析する処
理部とからなるストレス度測定装置。1. A stress level measuring device comprising an acceleration sensor which is attached to an end portion of a human body to measure a microvibration at the end portion of the human body, and a processing section which analyzes a microvibration spectrum signal obtained from the acceleration sensor. .
処理部より得られた微小振動スペクトルによりストレス
度を測定する方法。2. A method of measuring a microvibration at a terminal portion of a human body, and measuring a stress level by a microvibration spectrum obtained by the processing section.
求項２記載のストレス度測定方法。3. The stress level measuring method according to claim 2, wherein the minute vibration is measured at the fingertip position of the hand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7278872A JPH09117440A (en) | 1995-10-26 | 1995-10-26 | Method for measuring stress and device therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7278872A JPH09117440A (en) | 1995-10-26 | 1995-10-26 | Method for measuring stress and device therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09117440A true JPH09117440A (en) | 1997-05-06 |
Family
ID=17603299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7278872A Pending JPH09117440A (en) | 1995-10-26 | 1995-10-26 | Method for measuring stress and device therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09117440A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100870961B1 (en) * | 2007-01-30 | 2008-12-01 | 연세대학교 산학협력단 | Portable monitoring system of body activity |
| JP2013039265A (en) * | 2011-08-18 | 2013-02-28 | Seiko Epson Corp | Autonomic dystonia diagnosis device and autonomic dystonia diagnosis method |
| JP2014121410A (en) * | 2012-12-20 | 2014-07-03 | National Institute Of Advanced Industrial & Technology | Fatigue determination device, fatigue determination method and program |
-
1995
- 1995-10-26 JP JP7278872A patent/JPH09117440A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100870961B1 (en) * | 2007-01-30 | 2008-12-01 | 연세대학교 산학협력단 | Portable monitoring system of body activity |
| JP2013039265A (en) * | 2011-08-18 | 2013-02-28 | Seiko Epson Corp | Autonomic dystonia diagnosis device and autonomic dystonia diagnosis method |
| JP2014121410A (en) * | 2012-12-20 | 2014-07-03 | National Institute Of Advanced Industrial & Technology | Fatigue determination device, fatigue determination method and program |
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