JP2008253538A - Noncontact mental stress diagnostic system - Google Patents

Noncontact mental stress diagnostic system Download PDF

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JP2008253538A
JP2008253538A JP2007099025A JP2007099025A JP2008253538A JP 2008253538 A JP2008253538 A JP 2008253538A JP 2007099025 A JP2007099025 A JP 2007099025A JP 2007099025 A JP2007099025 A JP 2007099025A JP 2008253538 A JP2008253538 A JP 2008253538A
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mental stress
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heart rate
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Takemi Matsui
岳巳 松井
Satoru Suzuki
哲 鈴木
Hayato Imuta
隼人 藺牟田
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Tokyo Metropolitan Public University Corp
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Tokyo Metropolitan Public University Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a noncontact mental stress diagnostic system measuring a minimal displacement on a living body surface due to heart rate and respiration in noncontact therewith and analyzing a heart rate fluctuation index of the living body from the measurement result in a simple constitution. <P>SOLUTION: This noncontact mental stress diagnostic system 1 has a microwave emission means 10 for emitting microwaves to a subject P, and a microwave receiving means 10 for receiving the reflected waves from the subject P, measures the minimal displacement of the subject P in noncontact therewith, and is further provided with an analysis means 23 for analyzing the heart rate fluctuation index from the reflected waves. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、心拍呼吸等による生体表面の微小変位を非接触で計測し、その計測結果から生体のメンタルストレス状態を診断する非接触メンタルストレス診断システムに関する。   The present invention relates to a non-contact mental stress diagnosis system that measures a minute displacement of a living body surface due to heartbeat respiration and the like in a non-contact manner and diagnoses a mental stress state of the living body from the measurement result.

従来、心拍呼吸等による生体表面の微小変位を非接触で計測する非接触診断装置がある。この非接触診断装置は、マイクロ波を被検体に向けて放射し、その反射から所定の信号成分を抽出するため、隔離室にいる人間や有毒物質にさらされた被検体の心拍数を非接触でモニタすることができ、医師が患者に直接触れることなく敗血症や有毒ガス犠牲者の診断、処置が可能となり、有毒物質に対する医師の２次被爆を防ぐことも可能となる（特許文献１参照）。
特開２００６−３０４９６３号公報 2. Description of the Related Art Conventionally, there is a non-contact diagnostic apparatus that measures a minute displacement of a living body surface due to heartbeat respiration and the like in a non-contact manner. This non-contact diagnostic device emits microwaves toward the subject and extracts a predetermined signal component from the reflection, so the heart rate of the subject exposed to humans and toxic substances in the isolation room is non-contact It is possible to monitor the septicemia and poisonous gas victims without directly touching the patient, and it is possible to prevent secondary exposure of the doctor to toxic substances (see Patent Document 1). .
JP 2006-304963 A

ところで、近年、過剰な物理的・精神的ストレスによる労働災害が増加し、作業現場における精神的ストレス診断は安全確保の観点から重要な検討事項となっている。   By the way, in recent years, occupational accidents due to excessive physical and mental stress have increased, and mental stress diagnosis at work sites has become an important consideration from the viewpoint of ensuring safety.

しかしながら、上記特許文献１に記載された技術は、心拍数を求め、身体の異常を一部診断することはできるが、精神的ストレスまで診断することは示唆されていない。   However, although the technique described in Patent Document 1 can determine a heart rate and partially diagnose a physical abnormality, it is not suggested to diagnose even mental stress.

本発明は、上記課題を解決するものであって、簡単な構造で、心拍呼吸等による生体表面の微小変位を非接触で計測すると共に、その計測結果から生体の心拍変動指標を解析することができ、その心拍変動指標から被検体の緊張状態やゆらぎを捉え、メンタルストレス状態等の変化を診断することができる非接触メンタルストレス診断システムを提供することを目的とする。   The present invention solves the above-described problem, and measures a minute displacement of a living body surface due to heartbeat respiration etc. in a non-contact manner with a simple structure, and analyzes a heartbeat fluctuation index of a living body from the measurement result Another object of the present invention is to provide a non-contact mental stress diagnosis system that can detect a tension state and fluctuation of a subject from the heart rate variability index and diagnose a change in a mental stress state or the like.

そのために本発明は、被検体にマイクロ波を放射するマイクロ波放射手段と、前記被検体からの反射波を受信するマイクロ波受信手段とを備え、前記被検体の微小変位を非接触で計測する非接触メンタルストレス診断システムにおいて、前記反射波から心拍変動指標を解析する解析手段を備えたことを特徴とする。   For this purpose, the present invention includes a microwave radiating means for radiating a microwave to the subject and a microwave receiving means for receiving a reflected wave from the subject, and measures a minute displacement of the subject in a non-contact manner. The non-contact mental stress diagnosis system is characterized by comprising analysis means for analyzing a heart rate variability index from the reflected wave.

また、前記解析手段の解析した心拍変動指標から前記被検体の自律神経の緊張状態を評価する評価手段を備えたことを特徴とする。   Further, it is characterized by comprising an evaluation means for evaluating the tension state of the autonomic nerve of the subject from the heart rate variability index analyzed by the analysis means.

また、前記解析手段による心拍変動指標の解析は、最大エントロピー法を用いることを特徴とする。   The analysis of the heart rate variability index by the analyzing means uses a maximum entropy method.

また、前記被検体が着座するシートを備え、前記シートの背もたれ外側に前記マイクロ波放射手段及び前記マイクロ波受信手段を備えたことを特徴とする。   In addition, a seat on which the subject sits is provided, and the microwave radiating means and the microwave receiving means are provided outside a backrest of the seat.

本発明によれば、被検体に何の装置も取付けることなく、心拍呼吸等による生体表面の微小変位を非接触で計測すると共に、その計測結果から生体の心拍変動指標を解析することができ、その心拍変動指標から被検体のメンタルストレス状態を診断することができる。また、心拍変動指標を的確に解析することができる。   According to the present invention, it is possible to measure a minute displacement of the living body surface due to heartbeat respiration and the like without attaching any device to the subject, and to analyze a heartbeat variability index of the living body from the measurement result, The mental stress state of the subject can be diagnosed from the heart rate variability index. In addition, the heart rate variability index can be analyzed accurately.

さらに、シート等に着座したままで、被検体に何の装置も取付けることなく、シートの背もたれ外側に取り付けた装置から心拍呼吸等による生体表面の微小変位を非接触で計測することができるので、デスクワークを主とする作業者のメンタルストレス状態を作業状態のまま測定でき、過労死等の回避に役立てることができる。   Furthermore, since it is possible to measure the minute displacement of the living body surface due to heartbeat breathing etc. from a device attached outside the backrest of the seat without attaching any device to the subject while sitting on the seat etc., It is possible to measure the mental stress state of a worker who mainly works at desk work as it is in the working state, which can be useful for avoiding death from overwork.

以下、本発明の好ましい実施の形態について図面を参照して説明する。図１は、本発明の実施形態における非接触メンタルストレス診断システムの概略図を示す。非接触メンタルストレス診断システム１は、シートＳ等の背もたれ外側に取り付け、衣服Ｗを着用しシートＳ等に着座した状態の生物等の被検体Ｐに対して、衣服ＷやシートＳ等の遮蔽物を透過する電波を放射するマイクロ波放射手段、及び、被検体Ｐからの反射波を受信するマイクロ波受診手段の一例としてのマイクロ波レーダー装置１０と、マイクロ波レーダー装置１０から送信されたデータを演算処理する制御手段の一例としてのパーソナルコンピュータ２０と、を備える。   Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a schematic diagram of a non-contact mental stress diagnosis system in an embodiment of the present invention. The non-contact mental stress diagnosis system 1 is attached to the outside of the backrest of the seat S or the like, and shields such as the clothing W or the sheet S against the subject P such as a living body wearing the clothing W and seated on the seat S or the like. Microwave radar device 10 as an example of microwave radiation means for radiating radio waves that pass through and microwave reception means for receiving reflected waves from subject P, and data transmitted from microwave radar device 10 And a personal computer 20 as an example of a control means for performing arithmetic processing.

図２は、非接触メンタルストレス診断システムのブロック図を示す。マイクロ波レーダー装置１０は、レーダーアンテナ１１を通して電波を放射し、被検体Ｐからの反射波をレーダーアンテナ１１で受信し、受信した信号をマイクロ波レーダー制御部１２からデータ信号としてパーソナルコンピュータ２０に送信するものである。   FIG. 2 shows a block diagram of a non-contact mental stress diagnostic system. The microwave radar device 10 radiates radio waves through the radar antenna 11, receives the reflected wave from the subject P with the radar antenna 11, and transmits the received signal from the microwave radar control unit 12 to the personal computer 20 as a data signal. To do.

パーソナルコンピュータ２０は、まず、Ａ／Ｄ変換器２１でディジタル信号に変換し、ＰＰ間隔測定手段２２でＰＰ間隔を求める。続いて、解析手段２３で、ＰＰ間隔測定手段２２で求めたＰＰ間隔から最大エントロピー法等の手法により、心拍変動指標ＨＲＶを計測する。次に、評価手段２４で、心拍変動指標ＨＲＶから、被検体Ｐのメンタルストレス等の自律神経の緊張状態を評価する。   The personal computer 20 first converts to a digital signal by the A / D converter 21 and obtains the PP interval by the PP interval measuring means 22. Subsequently, the heart rate variability index HRV is measured by the analyzing unit 23 from the PP interval obtained by the PP interval measuring unit 22 by a method such as a maximum entropy method. Next, the evaluation means 24 evaluates the tension state of the autonomic nerve such as the mental stress of the subject P from the heart rate variability index HRV.

次に、各構成を具体的に説明する。   Next, each configuration will be specifically described.

まず、マイクロ波レーダー装置１０について説明する。図３は、マイクロ波部分の拡大図である。本実施形態では、衣服Ｗを着用し、シートＳに着座した状態の被検体Ｐに対して、シートＳの背もたれＳａに当接させず離れた位置にレーダーアンテナ１１を設置する。本実施形態ではオフィスでの作業時や自動車・電車の運転時等のメンタルストレスを評価する場合、身体前面から取得すると、作業に伴う腕の動き等によって、胸郭の動きが観察できなくなることから、シートＳの背もたれＳａから約２〜３ｃｍ離間させた位置より計測する。   First, the microwave radar device 10 will be described. FIG. 3 is an enlarged view of the microwave portion. In the present embodiment, the radar antenna 11 is installed at a position away from the subject P wearing the clothes W and sitting on the sheet S without contacting the backrest Sa of the sheet S. In this embodiment, when evaluating mental stress during office work or driving a car or train, if acquired from the front of the body, the movement of the thorax cannot be observed due to the movement of the arm etc. accompanying the work, Measured from a position about 2 to 3 cm apart from the backrest Sa of the sheet S.

レーダーアンテナ１１から被検体Ｐに向けて電波を放射すると、例えば衣服を着用したままであればマイクロ波に対して通常の衣服は透明で、人間の体は良好なマイクロ波反射体であるため、必要な強度の反射波が得られる。この反射波をレーダーアンテナ１１で受信してマイクロ波レーダー制御部１２に取り込む。また、本実施形態では、ドップラーレーダーを適用し、送信するマイクロ波の周波数としては、約２４ＧＨｚ、パワーは約１０ｍＷであり、フィルタ等により受信した反射波からアンテナ周囲の背景ノイズを除去することにより、心臓の鼓動等の生体の体表面の微小変位で変調された反射波が得られる。   When radio waves are radiated from the radar antenna 11 toward the subject P, for example, if clothes are worn, normal clothes are transparent to microwaves, and the human body is a good microwave reflector. A reflected wave having a required intensity can be obtained. This reflected wave is received by the radar antenna 11 and taken into the microwave radar control unit 12. In this embodiment, Doppler radar is applied, the frequency of the microwave to be transmitted is about 24 GHz, and the power is about 10 mW. By removing background noise around the antenna from the reflected wave received by a filter or the like. A reflected wave modulated by a minute displacement of the body surface of the living body such as a heartbeat can be obtained.

なお、本実施形態では、マイクロ波レーダー装置１０による計測の前に、2.5μｍの精度で計測できる高精度レーザー測距計を用いて、背部体表面がどの程度動いているか観察した。その結果、心臓の真裏付近である第４肋間狭付近は約0.2ｍｍ程度の振動であるのに対して、腰部付近では0.1mm程度の振動と、心臓に近いほど体表面の動きが大きいという示唆が得られたので、背部でも腰部より上方の方が体表面の微小な動きを計測するのに適していると考え、背部上方で計測した。   In the present embodiment, before the measurement by the microwave radar device 10, the degree of movement of the back body surface was observed using a high-precision laser rangefinder capable of measuring with an accuracy of 2.5 μm. As a result, the vicinity of the fourth intercostal space near the back of the heart is about 0.2 mm of vibration, while the vicinity of the waist is about 0.1 mm of vibration, suggesting that the body surface moves closer to the heart. Therefore, it was considered that the upper part of the back part was more suitable for measuring minute movements of the body surface, and the measurement was performed on the upper part of the back part.

次に、パーソナルコンピュータ２０について説明する。Ａ／Ｄ変換器２１は、マイクロ波レーダー装置１０で得られたデータをディジタル信号に変換するものである。   Next, the personal computer 20 will be described. The A / D converter 21 converts the data obtained by the microwave radar device 10 into a digital signal.

ＰＰ間隔測定手段２２は、Ａ／Ｄ変換器２１によりディジタル信号に変換されたデータからＰＰ間隔（Peak to Peak（図４を参照））を求めるものである。   The PP interval measuring means 22 obtains a PP interval (Peak to Peak (see FIG. 4)) from the data converted into a digital signal by the A / D converter 21.

ここで、非接触メンタルストレス診断システム１で計測した信号波形と、心電図波形とがほぼ一致し、本システムを診断に活用できることを説明する。   Here, it will be described that the signal waveform measured by the non-contact mental stress diagnosis system 1 and the electrocardiogram waveform substantially coincide with each other and that this system can be used for diagnosis.

図４は、心電図波形と本実施形態の非接触メンタルストレス診断システム１で計測した波形との比較を示す図である。図４（ａ）は被検体Ｐに電極を付けて測定した心電図波形、図４（ｂ）は非接触メンタルストレス診断システム１で計測した信号波形であり、マイクロ波レーダー装置１０の移相器による遅延で図４（ｂ）の信号ピークは、図４（ａ）の信号ピークに対して遅延しているものの、心電図から求めたＲＲ間隔（心拍の間隔）と酷似したＰＰ間隔信号がマイクロ波レーダー装置１０から得られていることがわかる。   FIG. 4 is a diagram showing a comparison between an electrocardiogram waveform and a waveform measured by the non-contact mental stress diagnosis system 1 of the present embodiment. 4A shows an electrocardiogram waveform measured by attaching an electrode to the subject P, and FIG. 4B shows a signal waveform measured by the non-contact mental stress diagnosis system 1, which is obtained by the phase shifter of the microwave radar apparatus 10. Although the signal peak in FIG. 4 (b) is delayed with respect to the signal peak in FIG. 4 (a), the PP interval signal very similar to the RR interval (heart rate interval) obtained from the electrocardiogram is a microwave radar. It can be seen that it is obtained from the device 10.

解析手段２３は、ＰＰ間隔測定手段２２でＰＰ間隔を求めたデータから自律神経等の生理学的指標となる心拍変動指標ＨＲＶを解析するものである。本実施形態では、最大エントロピー法ＭＥＭを用いて周波数領域の低周波数成分（ＬＦ：約0.04−0.15Hz）と高周波数成分（ＨＦ：約0.15−0.40Hz）に分離し、このＬＦとＨＦの比（ＬＦ/ＨＦ）を交感神経活動の指標，ＨＦを副交感神経活動の指標とした。なお、最大エントロピー法（ＭＥＭ）以外に高速フーリエ変換（ＦＦＴ）等を適用してもよい。   The analysis unit 23 analyzes a heart rate variability index HRV that is a physiological index of the autonomic nerve or the like from the data obtained by the PP interval measurement unit 22. In this embodiment, the maximum entropy method MEM is used to separate a low frequency component (LF: about 0.04 to 0.15 Hz) and a high frequency component (HF: about 0.15 to 0.40 Hz) in the frequency domain, and the ratio of LF to HF. (LF / HF) was used as an index of sympathetic nerve activity, and HF was used as an index of parasympathetic nerve activity. In addition to the maximum entropy method (MEM), fast Fourier transform (FFT) or the like may be applied.

ここで、非接触メンタルストレス診断システム１で計測した心拍変動指標ＨＲＶと、心電図から求めた心拍変動指標ＨＲＶとの相互相関性が高く、本システムを自律神経の緊張状態の評価に活用できることを説明する。   Here, it is explained that the heart rate variability index HRV measured by the non-contact mental stress diagnosis system 1 and the heart rate variability index HRV obtained from the electrocardiogram are highly cross-correlated, and that this system can be used for evaluation of the tension state of the autonomic nerve. To do.

図５は、心電図から求めた低周波成分と、本実施形態の非接触メンタルストレス診断システム１で求めた低周波成分との比較を示す図である。この比較は、約２分間の安静の後、擬似的なメンタルストレスとして不快な聴覚刺激を約２分間被検体Ｐに与え、その後再度約２分間安静にさせて回復過程を観察した結果である。なお、点線が比較のために取得した心電図より算出したＬＦ（低周波成分）の変化を示し，実線がマイクロ波レーダー装置１０から取得したデータより算出したＬＦの変化を示している。   FIG. 5 is a diagram showing a comparison between the low frequency component obtained from the electrocardiogram and the low frequency component obtained by the non-contact mental stress diagnosis system 1 of the present embodiment. This comparison is the result of observing the recovery process after applying an unpleasant auditory stimulus as pseudo mental stress to the subject P for about 2 minutes and then resting again for about 2 minutes after resting for about 2 minutes. A dotted line indicates a change in LF (low frequency component) calculated from an electrocardiogram acquired for comparison, and a solid line indicates a change in LF calculated from data acquired from the microwave radar device 10.

心電図より算出した結果を見ると、安静中はＬＦの値は低く安定しているが、２分後から不快な聴覚刺激を与えたためにＬＦの値が上昇している。これは交感神経系の緊張を意味しており、すなわちストレスの掛かった状態にあるといえる。この２分間の聴覚刺激の後、ＬＦの値は次第に下がりストレスが減少していることがわかる。マイクロ波レーダー装置１０から取得されたデータより算出したＬＦも、心電図から算出したものと極めて酷似した変化を示し、また絶対値も非常に近い値を示している．したがって、本非接触メンタルストレス診断システム１によって得られる結果は、直接電極を取り付けた心電図で得られる結果と略同一の結果が得られること、さらにメンタルストレスの変化に対応可能であることがわかる。   Looking at the results calculated from the electrocardiogram, the value of LF is low and stable during rest, but the value of LF increases because an unpleasant auditory stimulus was given after 2 minutes. This means sympathetic nervous system tension, that is, a stressed state. After this 2 minutes of auditory stimulation, it can be seen that the value of LF gradually decreases and the stress is reduced. The LF calculated from the data acquired from the microwave radar device 10 also shows a very similar change to that calculated from the electrocardiogram, and the absolute value is also very close. Therefore, it can be seen that the result obtained by the non-contact mental stress diagnosis system 1 is substantially the same as the result obtained by the electrocardiogram with the electrodes directly attached, and can cope with the change of the mental stress.

図６は、心電図から求めた心拍変動指標ＨＲＶと本実施形態の非接触メンタルストレス診断システム１で求めた心拍変動指標ＨＲＶとの相互相関分析の結果を示す図である。横軸を時間差（位相）、縦軸を相互相関係数とすると、ＬＦ及びＬＦ/ＨＦに対して、時間差のない０の時の相互相関係数が約１に近い値になっている。このことは、本実施形態の非接触メンタルストレス診断システム１で求めた心拍変動指標ＨＲＶのＬＦ及びＬＦ/ＨＦは、心電図から求めた心拍変動指標ＨＲＶと酷似していることを示している。   FIG. 6 is a diagram showing a result of cross-correlation analysis between the heart rate variability index HRV obtained from the electrocardiogram and the heart rate variability index HRV obtained by the non-contact mental stress diagnosis system 1 of the present embodiment. When the horizontal axis is the time difference (phase) and the vertical axis is the cross-correlation coefficient, the cross-correlation coefficient at 0 with no time difference is close to about 1 for LF and LF / HF. This indicates that the LF and LF / HF of the heart rate variability index HRV obtained by the non-contact mental stress diagnosis system 1 of the present embodiment are very similar to the heart rate variability index HRV obtained from the electrocardiogram.

評価手段２４は、解析手段２３で求められた心拍変動指標ＨＲＶから被検体Ｐのメンタルストレス等の自律神経の緊張状態を評価するものである。   The evaluation means 24 evaluates the tension state of the autonomic nerve such as mental stress of the subject P from the heart rate variability index HRV obtained by the analysis means 23.

このように、本実施形態では、被検体Ｐにマイクロ波を放射するマイクロ波放射手段１０と、前記被検体からの反射波を受信するマイクロ波受信手段１０とを備え、前記被検体Ｐの微小変位を非接触で計測する非接触メンタルストレス診断システム１において、前記反射波から心拍変動指標を解析する解析手段２３を備えたので、簡単な構造で、心拍呼吸等による生体表面の微小変位を非接触で計測すると共に、その計測結果から生体の心拍変動指標を解析することができ、その心拍変動指標から被検体を診断することができる。   As described above, the present embodiment includes the microwave radiating unit 10 that radiates microwaves to the subject P and the microwave receiving unit 10 that receives the reflected waves from the subject, and the subject P has a minute size. In the non-contact mental stress diagnosis system 1 that measures displacement in a non-contact manner, the analysis means 23 for analyzing a heart rate variability index from the reflected wave is provided. While measuring by contact, a heartbeat variability index of a living body can be analyzed from the measurement result, and a subject can be diagnosed from the heartbeat variability index.

また、解析手段２３の解析した心拍変動指標から被検体Ｐの自律神経の緊張状態を評価する評価手段２４を備えたので、心拍変動指標から被検体のメンタル状態を診断することができる。   Further, since the evaluation means 24 for evaluating the tension state of the autonomic nerve of the subject P from the heart rate variability index analyzed by the analysis means 23 is provided, the mental state of the subject can be diagnosed from the heart rate variability index.

また、解析手段２３による心拍変動指標の解析は、最大エントロピー法を用いるので、心拍変動指標を的確に解析することができる。   In addition, since the maximum entropy method is used for the analysis of the heart rate variability index by the analyzing unit 23, the heart rate variability index can be analyzed accurately.

さらに、被検体Ｐが着座するシートＳを備え、シートＳの背もたれＳａ外側にマイクロ波放射手段及び前記マイクロ波受信手段１０を備えたので、シートＳに着座したままで、被検体に何の装置も取付けることなく、シートＳの背もたれＳａ外側に取り付けたマイクロ波レーダー装置１０から心拍呼吸等による生体表面の微小変位を非接触で計測することができ、デスクワークを主とする作業者のメンタルストレス状態を作業状態のまま測定でき、過労死等の回避に役立てることができる。   Further, the apparatus includes the seat S on which the subject P is seated, and the microwave radiating means and the microwave receiving means 10 are provided outside the backrest Sa of the seat S. Without touching, the microwave radar device 10 attached to the outside of the backrest Sa of the seat S can measure a minute displacement of the living body surface due to heartbeat respiration, etc. in a non-contact manner. Can be measured in the working state and can be used to avoid death from overwork.

さらに、このような評価を実現することにより、例えば、自動車や電車等の乗物の運転手の走行中のメンタルストレスのモニタリングをして、自動車や電車等の制御を実行し、事故を防止するような応用技術に適用しても効果的である。   Furthermore, by realizing such an evaluation, for example, it is possible to monitor mental stress while driving a vehicle driver such as a car or train, and to control the car or train to prevent accidents. Even if applied to various application technologies, it is effective.

本発明の実施形態における非接触メンタルストレス診断システムの概略図である。It is the schematic of the non-contact mental stress diagnostic system in embodiment of this invention. 非接触メンタルストレス診断システムのブロック図である。It is a block diagram of a non-contact mental stress diagnostic system. マイクロ波部分の拡大図である。It is an enlarged view of a microwave part. 心電図波形と、本実施形態の非接触メンタルストレス診断システム１で計測した波形との比較を示す図である。It is a figure which shows a comparison with an electrocardiogram waveform and the waveform measured with the non-contact mental stress diagnostic system 1 of this embodiment. 心電図から求めた低周波成分と、本実施形態の非接触メンタルストレス診断システム１で求めた低周波成分との比較を示す図である。It is a figure which shows the comparison with the low frequency component calculated | required from the electrocardiogram, and the low frequency component calculated | required with the non-contact mental stress diagnostic system 1 of this embodiment. 心電図から求めた心拍変動指標ＨＲＶと、本実施形態の非接触メンタルストレス診断システム１で求めた心拍変動指標ＨＲＶとの相互相関分析の結果を示す図である。It is a figure which shows the result of the cross-correlation analysis of the heart rate variability index HRV calculated | required from the electrocardiogram, and the heart rate variability index HRV calculated | required with the non-contact mental stress diagnostic system 1 of this embodiment.

符号の説明Explanation of symbols

１…非接触メンタルストレス診断システム、１０…マイクロ波レーダー装置、１１…レーダーアンテナ、１２…マイクロ波レーダー制御部、２０…パーソナルコンピュータ、２１…Ａ／Ｄ変換器、２２…ＰＰ間隔測定手段、２３…解析手段、２４…評価手段、Ｐ…被検体、Ｗ…衣類、Ｓ…シート、Ｓａ…背もたれ   DESCRIPTION OF SYMBOLS 1 ... Non-contact mental stress diagnostic system, 10 ... Microwave radar apparatus, 11 ... Radar antenna, 12 ... Microwave radar control part, 20 ... Personal computer, 21 ... A / D converter, 22 ... PP interval measurement means, 23 ... analyzing means, 24 ... evaluating means, P ... subject, W ... clothing, S ... seat, Sa ... backrest

Claims (4)

被検体にマイクロ波を放射するマイクロ波放射手段と、前記被検体からの反射波を受信するマイクロ波受信手段とを備え、前記被検体の微小変位を非接触で計測する非接触メンタルストレス診断システムにおいて、前記反射波から心拍変動指標を解析する解析手段を備えたことを特徴とする非接触メンタルストレス診断システム。   A non-contact mental stress diagnosis system comprising: a microwave radiating unit that radiates a microwave to a subject; and a microwave receiving unit that receives a reflected wave from the subject, and measures a minute displacement of the subject in a non-contact manner. A non-contact mental stress diagnosis system comprising an analyzing means for analyzing a heartbeat variability index from the reflected wave. 前記解析手段の解析した心拍変動指標から前記被検体の自律神経の緊張状態を評価する評価手段を備えたことを特徴とする請求項１に記載の非接触メンタルストレス診断システム。   The non-contact mental stress diagnosis system according to claim 1, further comprising an evaluation unit that evaluates the tension state of the autonomic nerve of the subject from the heart rate variability index analyzed by the analysis unit. 前記解析手段による心拍変動指標の解析は、最大エントロピー法を用いることを特徴とする請求項１又は請求項２に記載の非接触メンタルストレス診断システム。   The non-contact mental stress diagnosis system according to claim 1 or 2, wherein the analysis of the heart rate variability index by the analysis unit uses a maximum entropy method. 前記被検体が着座するシートを備え、前記シートの背もたれ外側に前記マイクロ波放射手段及び前記マイクロ波受信手段を備えたことを特徴とする請求項１乃至請求項３のいずれかに記載の非接触メンタルストレス診断システム。
The non-contact according to any one of claims 1 to 3, further comprising: a seat on which the subject is seated, and the microwave radiation means and the microwave reception means are provided outside a backrest of the seat. Mental stress diagnosis system.
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010162069A (en) * 2009-01-13 2010-07-29 Nihon Univ Apparatus, method and program for estimating age by non-contact biological information collection
JP2010201113A (en) * 2009-03-06 2010-09-16 Hiro Kagaku Kenkyusho:Kk Fatigue degree determination processing system
WO2011099600A1 (en) 2010-02-15 2011-08-18 国立大学法人九州大学 Peak frequency measurement system for subject-state analyzing signal
WO2012073016A1 (en) * 2010-11-30 2012-06-07 University Of Lincoln A response detection system and associated methods
JP2012249884A (en) * 2011-06-03 2012-12-20 Tokyo Metropolitan Univ Non-contact stress evaluation system, non-contact stress evaluation method, and program for the same
JP2014039838A (en) * 2013-09-20 2014-03-06 Mitsubishi Electric Corp Biological state acquisition device, biological state acquisition program, and apparatus and air conditioner equipped with biological state acquisition device
KR101768142B1 (en) 2015-12-15 2017-08-14 현대자동차주식회사 Apparatus for measuring bio signal and method for controlling thereof
CN108553113A (en) * 2018-01-10 2018-09-21 王立钢 A kind of Psychology Dept. tester
KR20200076007A (en) * 2018-12-18 2020-06-29 주식회사 지엔아이씨티 Stress relief system
KR20200085102A (en) * 2019-01-04 2020-07-14 전자부품연구원 Driver Personalized Negative Emotion Discrimination System using Radar

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01115344A (en) * 1987-10-29 1989-05-08 Nissan Motor Co Ltd Apparatus for detecting state of driver
JPH0759757A (en) * 1993-08-25 1995-03-07 Tsutomu Suzuki Physical condition detector
JP2001260698A (en) * 2000-03-21 2001-09-26 Isuzu Motors Ltd Cardiac respiratory detecting device
JP2002058659A (en) * 2000-08-18 2002-02-26 Micro Wave Lab:Kk Microwave micromotion sensor
JP2004113329A (en) * 2002-09-25 2004-04-15 Tanita Corp Pillow type sleep measuring instrument
JP2004242720A (en) * 2003-02-10 2004-09-02 Kizakura Sake Brewing Co Drunken behavior evaluation method
JP2005237569A (en) * 2004-02-25 2005-09-08 Daikin Ind Ltd Portable measuring equipment, health management system, and health management method
JP2006271897A (en) * 2005-03-30 2006-10-12 Toshiba Corp Apparatus and method for predicting sleepiness
JP2006304963A (en) * 2005-04-27 2006-11-09 Tau Giken:Kk Noncontact diagnostic device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01115344A (en) * 1987-10-29 1989-05-08 Nissan Motor Co Ltd Apparatus for detecting state of driver
JPH0759757A (en) * 1993-08-25 1995-03-07 Tsutomu Suzuki Physical condition detector
JP2001260698A (en) * 2000-03-21 2001-09-26 Isuzu Motors Ltd Cardiac respiratory detecting device
JP2002058659A (en) * 2000-08-18 2002-02-26 Micro Wave Lab:Kk Microwave micromotion sensor
JP2004113329A (en) * 2002-09-25 2004-04-15 Tanita Corp Pillow type sleep measuring instrument
JP2004242720A (en) * 2003-02-10 2004-09-02 Kizakura Sake Brewing Co Drunken behavior evaluation method
JP2005237569A (en) * 2004-02-25 2005-09-08 Daikin Ind Ltd Portable measuring equipment, health management system, and health management method
JP2006271897A (en) * 2005-03-30 2006-10-12 Toshiba Corp Apparatus and method for predicting sleepiness
JP2006304963A (en) * 2005-04-27 2006-11-09 Tau Giken:Kk Noncontact diagnostic device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JPN6013000036; Ｐａｙｍａｎ　Ｆａｔｈｉｚａｄｅｈ，　Ｗｉｌｌｉａｍ　Ｃ．　Ｓｈｏｅｍａｋｅｒ，　Ｃｈａｒｌｅｓ　Ｃ．　Ｊ．　Ｗｏ，　Ｊｏｓｅｐｈ　Ｃｏｌｏｍｂｏ: '"Ａｕｔｏｎｏｍｉｃ　ａｃｔｉｖｉｔｙ　ｉｎ　ｔｒａｕｍａ　ｐａｔｉｅｎｔｓ　ｂａｓｅｄ　ｏｎ　ｖａｒｉａｂｉｌｉｔｙ　ｏｆ　ｈｅａｒｔ　ｒａｔｅ　ａｎｄ　ｒｅｓｐｉｒａｔｏｒｙ　ｒａｔｅ"' Ｃｒｉｔｉｃａｌ　Ｃａｒｅ　Ｍｅｄｉｃｉｎｅ 第３２巻、第６号, 200406, ｐ．１３００-１３０５, Ｔｈｅ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｃｒｉｔｉｃａｌ　Ｃａｒｅ　Ｍｅｄｉｃｉｎｅ　ａ&#xFF4 *

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010162069A (en) * 2009-01-13 2010-07-29 Nihon Univ Apparatus, method and program for estimating age by non-contact biological information collection
JP2010201113A (en) * 2009-03-06 2010-09-16 Hiro Kagaku Kenkyusho:Kk Fatigue degree determination processing system
JP5709017B2 (en) * 2010-02-15 2015-04-30 国立大学法人九州大学 Signal frequency measurement system for subject condition analysis
WO2011099600A1 (en) 2010-02-15 2011-08-18 国立大学法人九州大学 Peak frequency measurement system for subject-state analyzing signal
US9186079B2 (en) 2010-02-15 2015-11-17 Kyushu University, National University Corporation System for measuring a peak frequency of a signal for analyzing condition of a subject
WO2012073016A1 (en) * 2010-11-30 2012-06-07 University Of Lincoln A response detection system and associated methods
JP2012249884A (en) * 2011-06-03 2012-12-20 Tokyo Metropolitan Univ Non-contact stress evaluation system, non-contact stress evaluation method, and program for the same
JP2014039838A (en) * 2013-09-20 2014-03-06 Mitsubishi Electric Corp Biological state acquisition device, biological state acquisition program, and apparatus and air conditioner equipped with biological state acquisition device
KR101768142B1 (en) 2015-12-15 2017-08-14 현대자동차주식회사 Apparatus for measuring bio signal and method for controlling thereof
CN108553113A (en) * 2018-01-10 2018-09-21 王立钢 A kind of Psychology Dept. tester
KR20200076007A (en) * 2018-12-18 2020-06-29 주식회사 지엔아이씨티 Stress relief system
KR102131391B1 (en) 2018-12-18 2020-07-09 주식회사 지엔아이씨티 Stress relief system
KR20200085102A (en) * 2019-01-04 2020-07-14 전자부품연구원 Driver Personalized Negative Emotion Discrimination System using Radar
KR102328937B1 (en) * 2019-01-04 2021-11-19 한국전자기술연구원 Driver Personalized Negative Emotion Discrimination System using Radar

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