JP2505072B2 - Awakening Monitor-Device - Google Patents
Awakening Monitor-DeviceInfo
- Publication number
- JP2505072B2 JP2505072B2 JP3123579A JP12357991A JP2505072B2 JP 2505072 B2 JP2505072 B2 JP 2505072B2 JP 3123579 A JP3123579 A JP 3123579A JP 12357991 A JP12357991 A JP 12357991A JP 2505072 B2 JP2505072 B2 JP 2505072B2
- Authority
- JP
- Japan
- Prior art keywords
- user
- arousal level
- electrocardiogram
- wakefulness
- nerve
- 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
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、主として作業中の覚醒
度をモニターして、使用者の覚醒度に対応した環境の制
御あるいは警告表示を行う覚醒度モニター装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wakefulness monitoring device for monitoring the wakefulness during work and for controlling the environment or displaying a warning corresponding to the wakefulness of a user.
【０００２】[0002]
【従来の技術】従来、使用者の覚醒度をモニターする装
置として、使用者の皮膚電気抵抗を計測し、居眠りを検
出するものが提案されている（特開昭６２−０２６０４
６号公報参照）。2. Description of the Related Art Conventionally, as a device for monitoring the degree of arousal of a user, a device for measuring the electrical resistance of the user's skin and detecting drowsiness has been proposed (Japanese Patent Laid-Open No. 62-02604).
No. 6 publication).
【０００３】一方、使用者の覚醒度を知るための手段と
しては、使用者の皮膚電気抵抗以外に、心電を解析する
方法も知られている。すなわち、一般に心電のＲ波とＲ
波の間隔（Ｒ−Ｒ間隔）の時系列をスペクトル解析する
と、０．３Ｈｚ付近が呼吸性変動を、０．１Ｈｚ付近が
血圧性変動を示し、前者は自律神経系の副交感神経の活
動状態、後者は交感神経と副交感神経の両方の活動状態
を反映することが知られている。On the other hand, as a means for knowing the arousal level of the user, a method of analyzing electrocardiogram is known in addition to the skin electrical resistance of the user. That is, in general, electrocardiographic R waves and R
Spectral analysis of the time series of wave intervals (RR interval) shows respiratory fluctuations at around 0.3 Hz and blood pressure fluctuations at around 0.1 Hz, the former being the state of parasympathetic nerve activity in the autonomic nervous system, The latter is known to reflect both sympathetic and parasympathetic activity states.
【０００４】また、作業者の覚醒度が低い場合に、覚醒
度を上げる刺激として、高照度化、温熱、芳香、空気流
などが知られている。しかしながら、作業者の覚醒度が
極度に下がっている場合は、むしろ休憩やリフレッシュ
ルームの使用などにより疲労回復を図ることが望ましい
と考えられている。Further, when the arousal level of the worker is low, as the stimulus for increasing the arousal level, high illuminance, heat, aroma, air flow, etc. are known. However, when the worker's arousal level is extremely low, it is considered desirable to recover from fatigue by taking a break or using a refresh room.
【０００５】[0005]
【発明が解決しようとする課題】従来の居眠り検出装置
は、使用者の皮膚電気抵抗を測定するものであるから、
周囲の湿度等による誤差が大きく、また、使用者の覚醒
度が極度に下がった場合を検出するだけであり、微妙な
覚醒度の変化に対しては全く対応ができないという問題
があった。Since the conventional drowsiness detecting device measures the skin electrical resistance of the user,
There is a problem that the error due to the surrounding humidity is large and only the case where the user's arousal level is extremely lowered is detected, and a slight change in the arousal level cannot be dealt with at all.
【０００６】本発明はこのような点に鑑みてなされたも
のであり、その目的とするところは、使用者の心電を計
測して、覚醒度を判定し、覚醒度に対応した環境の制
御、あるいは警告表示を施す覚醒度モニター装置を提供
することにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to measure the electrocardiogram of the user, determine the arousal level, and control the environment corresponding to the arousal level. Another object of the present invention is to provide a wakefulness monitoring device that gives a warning display.
【０００７】[0007]
【課題を解決するための手段】本発明の覚醒度モニター
装置は、上記の課題を解決するために、図１に示すよう
に、使用者の心電を計測する心電計測部１と、計測され
た心電に基づいて使用者の覚醒度を判定する覚醒度判定
部２と、使用者の覚醒度に応じて環境を制御する環境制
御部３と、使用者の覚醒度が極度に低い場合に使用者に
警告の表示を与える警告表示部４とからなることを特徴
とするものである。In order to solve the above-mentioned problems, the arousal level monitoring device of the present invention, as shown in FIG. 1, includes an electrocardiographic measurement unit 1 for measuring the electrocardiogram of a user and a measurement. When the wakefulness determination unit 2 that determines the wakefulness of the user based on the performed electrocardiogram, the environment control unit 3 that controls the environment according to the wakefulness of the user, and the wakefulness of the user is extremely low And a warning display section 4 for giving a warning display to the user.
【０００８】[0008]
【作用】本発明では、使用者の心電を計測することによ
り、使用者の交感神経と副交感神経の活動状態を判定
し、使用者の覚醒度に対応して、周囲照度、温熱、芳
香、空気流などの環境の制御を行い、覚醒度が予め設定
された値よりも低い値であれば、警告表示を施す。これ
により、使用者の微妙な覚醒度の変化に対応することが
できると共に、極端な覚醒度の低下にも対応することが
できるものである。In the present invention, the activity states of the sympathetic nerve and parasympathetic nerve of the user are determined by measuring the electrocardiogram of the user, and the ambient illuminance, heat, fragrance, and The environment such as the air flow is controlled, and if the awakening level is lower than a preset value, a warning display is given. As a result, it is possible to cope with a slight change in the arousal level of the user and also to cope with an extreme decrease in the arousal level.
【０００９】[0009]
【実施例】以下、本発明の一実施例を図１に基づいて説
明する。図中、１は心電計測部であり、使用者の心電を
計測する。この心電計測部１は、心電のＲ−Ｒ間隔を測
定できる手段であれば何でも良く、例えば、腕時計型の
簡単な心拍センサーであっても良い。２は覚醒度判定部
であり、計測された心電に基づいて使用者の覚醒度を判
定する。この覚醒度判定部２は、心電計測部１で計測さ
れた心電のＲ−Ｒ間隔を時系列的に記憶する記憶手段
と、記憶された心電のＲ−Ｒ間隔の変動スペクトルを周
波数分析するＦＦＴ（高速フーリエ変換）手段と、前記
周波数分析結果から０．１Ｈｚ前後のパワーと０．３Ｈ
ｚ前後のパワーを計測して交感神経と副交感神経の活動
状態をそれぞれ数値化する手段と、交感神経と副交感神
経の活動状態の平衡関係に基づいて身体の覚醒度を数値
化する手段とからなる。An embodiment of the present invention will be described below with reference to FIG. In the figure, reference numeral 1 denotes an electrocardiographic measurement unit, which measures the electrocardiogram of the user. The electrocardiographic measurement unit 1 may be any device capable of measuring the RR interval of electrocardiogram, and may be, for example, a wristwatch-type simple heartbeat sensor. A wakefulness determination unit 2 determines the wakefulness of the user based on the measured electrocardiogram. The awakening degree determination unit 2 stores the electrocardiographic R-R interval measured by the electrocardiographic measurement unit 1 in time series, and stores the fluctuation spectrum of the stored electrocardiographic R-R interval in frequency. FFT (Fast Fourier Transform) means for analysis, and a power of about 0.1 Hz and 0.3 H from the frequency analysis result.
It consists of means to measure the power before and after z and quantify the activity states of the sympathetic nerve and parasympathetic nerve respectively, and means to quantify the arousal level of the body based on the equilibrium relationship between the activity states of the sympathetic nerve and parasympathetic nerve. .
【００１０】３は環境制御部であり、覚醒度判定部２で
得られた使用者の覚醒度に基づいて、周囲照度、温熱、
芳香、空気流などの環境の制御を行う。これにより、使
用者の微妙な覚醒度の低下に対しては、覚醒度を少し上
げる方向に環境が変化し、反対に、覚醒度の上昇に対し
ては、覚醒度を少し下げる方向に環境が変化し、使用者
を含む１つのフィードバック制御系が構成される。した
がって、本発明では、使用者の覚醒度が常に最適値に近
づくように制御することができる。Reference numeral 3 denotes an environment control unit which, based on the awakening level of the user obtained by the awakening level determination unit 2, determines the ambient illuminance, the heat,
Control the environment such as aroma and air flow. As a result, the environment changes to slightly increase the arousal level with respect to the user's slight decrease in the arousal level, and conversely, the environment changes to a slightly lower level with the increase in the arousal level. One feedback control system is constructed that varies and includes the user. Therefore, according to the present invention, it is possible to control so that the arousal level of the user is always close to the optimum value.
【００１１】４は警告表示部であり、使用者の覚醒度が
極度に低い場合に使用者に警告の表示を与える。すなわ
ち、使用者の覚醒度が極度に下がっている場合は、環境
の制御による覚醒度の上昇は望めないと判断し、むしろ
使用者に対して休憩やリフレッシュルームの使用などに
より疲労回復を勧めるものである。このように構成した
方が結果的には作業効率を高めることができる。A warning display unit 4 gives a warning display to the user when the user's awakening level is extremely low. That is, when the user's arousal level is extremely low, it is judged that the arousal level cannot be expected to increase due to environmental control, and rather the user is advised to recover from fatigue by taking a break or using a refresh room. Is. With such a configuration, the work efficiency can be improved as a result.
【００１２】図２は心電のＲ−Ｒ間隔の説明図である。
心電のＲ−Ｒ間隔とは、心電の１周期中の最も鋭いピー
クであるＲ波とＲ波の間隔を言う。心電には、Ｒ波以外
にも特徴的な波が複数個存在するが、本実施例では、測
定の容易性と自律神経系との関連性からＲ波を計測対象
としている。FIG. 2 is an explanatory diagram of the RR interval of the electrocardiogram.
The electrocardiographic R-R interval refers to the interval between the R waves that are the sharpest peaks in one electrocardiographic cycle. In the electrocardiogram, there are a plurality of characteristic waves other than the R wave, but in the present embodiment, the R wave is the measurement target because of the ease of measurement and the relationship with the autonomic nervous system.
【００１３】図３は心電のＲ−Ｒ間隔の時系列を一例と
して示している。また、これを周波数分析したパワース
ペクトルを図４に示す。０．３Ｈｚ前後のＲＳＡ（呼吸
性変動）が副交感神経の活動状態を反映し、０．１Ｈｚ
前後のＭＷＳＡ（血圧性変動）が交感神経と副交感神経
の両方の活動状態を反映している。本実施例では、血圧
性変動成分ＭＷＳＡを呼吸性変動成分ＲＳＡで除算する
ことにより、交感神経の活動度を推定し、これを覚醒度
とする。あるいは、交感神経の活動度と副交感神経の活
動度の差分を演算して、これを覚醒度とする。FIG. 3 shows an example of a time series of RR intervals of electrocardiography. Moreover, the power spectrum which carried out the frequency analysis of this is shown in FIG. RSA (respiratory fluctuation) around 0.3 Hz reflects the activity state of parasympathetic nerve, and 0.1 Hz
The anterior-posterior MWSA (blood pressure fluctuation) reflects the activity status of both sympathetic and parasympathetic nerves. In this embodiment, the blood pressure fluctuation component MWSA is divided by the respiratory fluctuation component RSA to estimate the activity of the sympathetic nerve, and this is used as the arousal level. Alternatively, the difference between the activity of the sympathetic nerve and the activity of the parasympathetic nerve is calculated and used as the arousal level.
【００１４】図５は呼吸性変動と血圧性変動の概念的な
説明図である。この図から明らかなように、心拍の周期
を決める心拍ペースメーカーは、互いに正反対の作用を
有する交感神経（心臓交感神経）と副交感神経（心臓迷
走神経）の二重支配を受けており、両者の平衡状態で制
御されるものである。心臓に対しては、交感神経は促進
作用を有し、副交感神経は制止作用を有する。気管支筋
に対しては、交感神経は弛緩作用を有し、副交感神経は
収縮作用を有する。血管に対しては、交感神経は収縮作
用を有し、血圧を上昇させるものであり、副交感神経は
拡張作用を有し、血圧を降下させるものである。したが
って、心拍の変動は、呼吸変動や血圧変動と一定の関係
を持っており、心拍のＲ−Ｒ間隔のゆらぎのパワースペ
クトルを解析することにより、交感神経と副交感神経の
緊張度を知ることができる。一般に、交感神経は身体の
活動力を高めるように働くのに対し、副交感神経は身体
の疲労を回復させるように働く。したがって、交感神経
と副交感神経の活動状態を知ることにより、身体の覚醒
度を知ることができる。FIG. 5 is a conceptual explanatory view of respiratory fluctuation and blood pressure fluctuation. As is clear from this figure, the heartbeat pacemaker, which determines the heartbeat cycle, is under dual control of the sympathetic nerve (cardiac sympathetic nerve) and the parasympathetic nerve (cardiac vagus nerve), which have opposite effects, and the balance between the two It is controlled by the state. For the heart, the sympathetic nerve has a promoting action and the parasympathetic nerve has a blocking action. For the bronchial muscle, the sympathetic nerve has a relaxing action and the parasympathetic nerve has a contracting action. For blood vessels, the sympathetic nerve has a contracting action and raises blood pressure, and the parasympathetic nerve has a dilating action and lowers blood pressure. Therefore, the fluctuation of the heartbeat has a constant relationship with the respiratory fluctuation and the blood pressure fluctuation, and by analyzing the power spectrum of the fluctuation of the RR interval of the heartbeat, it is possible to know the tension of the sympathetic nerve and the parasympathetic nerve. it can. Generally, the sympathetic nerve works to increase the physical activity of the body, while the parasympathetic nerve works to recover the fatigue of the body. Therefore, the arousal level of the body can be known by knowing the activity states of the sympathetic nerve and the parasympathetic nerve.
【００１５】[0015]
【発明の効果】本発明の覚醒度モニター装置では、心電
の計測により使用者の覚醒度を判定するようにしたか
ら、皮膚電気抵抗を計測する従来技術に比べると、湿度
等による誤差が入り込む余地が無く、精度の高い覚醒度
のモニターが可能になるという効果があり、また、使用
者の覚醒度を常時モニターして、覚醒度が少し低くなっ
た場合には、環境制御部により覚醒度を上げるような環
境制御を与えるようにしたので、使用者の覚醒度を常に
最適値に近づけるように制御することができるという効
果があり、さらにまた、覚醒度が極度に低くなった場合
には、警告表示部により使用者の疲労回復を促す警告を
表示するようにしたので、最適なタイミングで使用者に
休憩をとらせることができ、全体として使用者の作業効
率を高めることができるという優れた効果がある。In the arousal level monitoring device of the present invention, since the arousal level of the user is determined by measuring the electrocardiogram, an error due to humidity or the like is introduced as compared with the conventional technique of measuring the skin electrical resistance. There is no room and it is possible to monitor the arousal level with high accuracy.Also, if the arousal level of the user is constantly monitored and the arousal level becomes a little low, the environmental control unit will activate the arousal level. Since the environment control that raises the awakening is given, there is an effect that the arousal level of the user can be controlled so as to be always close to the optimum value. Furthermore, when the arousal level becomes extremely low, Since the warning display section displays a warning prompting the user to recover from fatigue, the user can take a break at the optimal timing, and the working efficiency of the user as a whole can be improved. There is an excellent effect that that.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の基本構成を示すブロック図である。FIG. 1 is a block diagram showing a basic configuration of the present invention.
【図２】心電のＲ−Ｒ間隔を説明するための波形図であ
る。FIG. 2 is a waveform diagram for explaining an RR interval of an electrocardiogram.
【図３】心電のＲ−Ｒ間隔の時系列の推移を示す図であ
る。FIG. 3 is a diagram showing a time series transition of an electrocardiographic RR interval.
【図４】心電のＲ−Ｒ間隔の変動スペクトルを示す図で
ある。FIG. 4 is a diagram showing a variation spectrum of an electrocardiographic RR interval.
【図５】心拍変動と呼吸変動と血圧変動の関係を概念的
に示す説明図である。FIG. 5 is an explanatory diagram conceptually showing the relationship between heart rate variability, respiratory variability, and blood pressure variability.
１ 心電計測部 ２ 覚醒度判定部 ３ 環境制御部 ４ 警告表示部 1 Electrocardiography measurement unit 2 Arousal level determination unit 3 Environmental control unit 4 Warning display unit
Claims (1)
と、計測された心電に基づいて使用者の覚醒度を判定す
る覚醒度判定部と、使用者の覚醒度に応じて環境を制御
する環境制御部と、使用者の覚醒度が極度に低い場合に
使用者に警告の表示を与える警告表示部とからなること
を特徴とする覚醒度モニター装置。1. An electrocardiogram measuring unit for measuring an electrocardiogram of a user, an arousal level determining unit for determining an arousal level of the user based on the measured electrocardiogram, and an environment according to the arousal level of the user. A wakefulness monitoring device, comprising: an environment control unit for controlling the wakeup and a warning display unit for giving a warning display to the user when the wakefulness of the user is extremely low.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3123579A JP2505072B2 (en) | 1991-05-28 | 1991-05-28 | Awakening Monitor-Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3123579A JP2505072B2 (en) | 1991-05-28 | 1991-05-28 | Awakening Monitor-Device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04348759A JPH04348759A (en) | 1992-12-03 |
| JP2505072B2 true JP2505072B2 (en) | 1996-06-05 |
Family
ID=14864081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3123579A Expired - Fee Related JP2505072B2 (en) | 1991-05-28 | 1991-05-28 | Awakening Monitor-Device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2505072B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8311621B2 (en) | 2006-12-04 | 2012-11-13 | Toyota Jidosha Kabushiki Kaisha | Device for judging degree of awakening and method for judging degree of awakening |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0778001B1 (en) | 1995-05-12 | 2004-04-07 | Seiko Epson Corporation | Apparatus for diagnosing condition of living organism and control unit |
| JP4861141B2 (en) * | 2006-12-01 | 2012-01-25 | 富士通株式会社 | Vehicle control device, vehicle control program, and vehicle control method |
| JP2009039167A (en) | 2007-08-06 | 2009-02-26 | Toyota Motor Corp | Sleepiness determining device |
| JP2009266482A (en) * | 2008-04-23 | 2009-11-12 | Takenaka Komuten Co Ltd | Physiological information adaptive type illumination control system |
| JP5017414B2 (en) * | 2010-04-12 | 2012-09-05 | 株式会社東芝 | Sleep state measurement device, sleep state measurement method, and sleep state measurement system |
-
1991
- 1991-05-28 JP JP3123579A patent/JP2505072B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8311621B2 (en) | 2006-12-04 | 2012-11-13 | Toyota Jidosha Kabushiki Kaisha | Device for judging degree of awakening and method for judging degree of awakening |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04348759A (en) | 1992-12-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |