JP2007330500A - Sleeping evaluation system - Google Patents

Sleeping evaluation system Download PDF

Info

Publication number
JP2007330500A
JP2007330500A JP2006165701A JP2006165701A JP2007330500A JP 2007330500 A JP2007330500 A JP 2007330500A JP 2006165701 A JP2006165701 A JP 2006165701A JP 2006165701 A JP2006165701 A JP 2006165701A JP 2007330500 A JP2007330500 A JP 2007330500A
Authority
JP
Japan
Prior art keywords
subject
bedding
testee
detection sensor
body movement
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
Application number
JP2006165701A
Other languages
Japanese (ja)
Other versions
JP4697060B2 (en
Inventor
Koki Noguchi
公喜 野口
Manabu Inoue
学 井上
Naohiro Toda
直宏 戸田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP2006165701A priority Critical patent/JP4697060B2/en
Publication of JP2007330500A publication Critical patent/JP2007330500A/en
Application granted granted Critical
Publication of JP4697060B2 publication Critical patent/JP4697060B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sleeping evaluation system to evaluate sleeping of a testee by detecting body movement of the testee lying in bedding, and capable of certainly detecting the body movement of the testee even when the testee sleeps in a state of covering the testee with a lot of the bedding while restraining cost of the whole system in simple constitution. <P>SOLUTION: A body movement detection sensor 3 is arranged within a height region capable of detecting the body movement when an optical axis 9 to collect an infrared ray irradiated from the body of the testee P comes to be roughly in parallel with a flat surface of the bedding 2 and the testee turns over in sleep is arranged on a head part Ph side of the testee P lying in the bedding 2. The body movement detection sensor 3 is capable of catching a change of a heat source when the testee P turns over in sleep as a change of size of the heat source and certainly detecting the body movement of the testee P even when the testee P sleeps in a state of covering the testee P with a lot of the bedding 2 as in winter as it sees the head part Ph exposed from the bedding 2 of the lying testee P in a visual field from the sensor side from the side in the horizontal direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、横たわっている被験者の体動を検知し、それに基づいて被験者の睡眠を評価することが可能な睡眠評価システムに関する。   The present invention relates to a sleep evaluation system capable of detecting body motion of a lying subject and evaluating the sleep of the subject based on the detected body motion.

従来から、睡眠時体動検出装置として、赤外線カメラによって撮像された睡眠中の被験者の画像を複数の区分に分けて解析し、各区分における濃度中心の座標の変動に基づいて被験者の寝返りやミオクローヌスを検出するものが知られている（例えば、特許文献１参照）。   Conventionally, as a sleep body motion detection device, an image of a sleeping subject imaged by an infrared camera is divided into a plurality of sections and analyzed, and the subject's rollover and myoclonus are determined based on fluctuations in concentration center coordinates in each section. Is known (for example, see Patent Document 1).

また、ベッドの長手方向に投光可能な光センサが複数設けられ、それら光センサのうちいずれの光センサから被介護者の検出信号が得られるかによってベッド上の被介護者の種々の動きを検出する動態検出システムが知られている（例えば、特許文献２参照）。
特開２００３−２９９６３６号公報 特開２００１−３２７５４９号公報 In addition, a plurality of optical sensors capable of projecting in the longitudinal direction of the bed are provided, and various movements of the cared person on the bed can be determined depending on which one of the optical sensors can obtain the detection signal of the cared person. A dynamic detection system for detection is known (see, for example, Patent Document 2).
JP 2003-299636 A JP 2001-327549 A

上記特許文献１に示されるような装置においては、画像の解析のための装置構成が複雑になり全体のコストが嵩む欠点がある。また、冬季のように被験者が多くの寝具（掛布団）を掛けた状態、又は厚めの寝具を掛けた状態では、被験者の体から放射される赤外線が確実には捉えられず被験者の体動を検出できないことがあった。   The apparatus as disclosed in Patent Document 1 has a drawback that the apparatus configuration for image analysis becomes complicated and the overall cost increases. In addition, when the subject hangs a lot of bedding (comforter) or a thick bedding like in winter, the infrared rays emitted from the subject's body cannot be reliably detected and the subject's body movement is detected. There was something I couldn't do.

また、上記特許文献２に示されるような装置においては、被介護者がベッド上で起上がったり、離床してベッドから離れる等の比較的移動範囲の大きい動作を検知するための装置であって、睡眠中の被験者が起こす寝返り等の比較的移動範囲の小さい動き（体動）を検知することは困難である。   Moreover, in the apparatus as shown in the above-mentioned Patent Document 2, it is an apparatus for detecting an operation with a relatively large movement range such as when a cared person gets up on the bed or leaves the bed by leaving the bed, It is difficult to detect movements (body movements) with a relatively small movement range such as turning over caused by a sleeping subject.

すなわち、この装置においては、ベッドのヘッドボードに設けられた２箇所の光センサによって被介護者の横たわった姿勢から長座位の姿勢への変化が検知されるが、このような大きな変化を確実に検知するために光センサの設置高さは、横たわった姿勢の被介護者よりも相当に高い位置に設定されている。仮に光センサが横たわった姿勢の被介護者よりも少しだけ上方に設置された場合には、光センサは被介護者の寝返り動作を検知してしまうことになり、被介護者の横たわった姿勢から長座位の姿勢への変化を検知することが困難である。   That is, in this device, the change from the posture of the care recipient to the long sitting posture is detected by the two optical sensors provided on the headboard of the bed. In order to detect, the installation height of the optical sensor is set to a position that is considerably higher than the care recipient in a lying posture. If the light sensor is installed slightly above the caregiver in the posture of lying down, the light sensor will detect the caretaker's rollover action, and from the posture of the caregiver lying down It is difficult to detect a change to the long sitting posture.

そこで、本発明は、上記従来の問題を解消するためになされたもので、簡単な構成でシステム全体のコストを抑制しつつ、冬季のように被験者が寝具を多く掛けた状態、又は厚めの寝具を掛けた状態で就寝する場合であっても被験者の体動を確実に検出することが可能な睡眠評価システムを提供することを目的とする。   Therefore, the present invention has been made to solve the above-described conventional problems, and while suppressing the cost of the entire system with a simple configuration, the subject has put a lot of bedding on in the winter, or a thick bedding. It is an object of the present invention to provide a sleep evaluation system capable of reliably detecting the body movement of a subject even when sleeping in a state where the user puts on.

上記目的を達成するために、請求項１の発明は、寝具に横たわっている被験者の体動を検知することによって被験者の睡眠を評価する睡眠評価システムにおいて、寝具から露出した被験者の体から放射される赤外線を検知し、又はセンサ自体が有する発光源から照射され被験者の体によって反射される反射光を検知する体動検知センサを備え、前記体動検知センサは、その光軸が寝具平面と略平行であり、かつ寝具に横たわる被験者が寝返りをうつときの体動を検出する高さ範囲内に配置され、前記光軸に略直交する方向における前記赤外線又は反射光の変動に基づいて被験者の体動を検知することを特徴とする。   In order to achieve the above object, the invention of claim 1 is a sleep evaluation system that evaluates sleep of a subject by detecting body movement of the subject lying on the bedding, and is emitted from the body of the subject exposed from the bedding. Or a body motion detection sensor that detects reflected light that is irradiated from a light source that the sensor itself has and is reflected by the body of the subject, and the optical axis of the body motion detection sensor is substantially the same as the bedding plane. The body of the subject based on the variation of the infrared or reflected light in a direction that is parallel and is located within a height range for detecting body movement when the subject lying on the bedding turns over and is substantially perpendicular to the optical axis. It is characterized by detecting movement.

請求項２の発明は、請求項１に記載の睡眠評価システムにおいて、前記体動検知センサが、寝具に横たわっている被験者の頭部側において前記光軸に沿って被験者から離れた位置に設けられることを特徴とする。   According to a second aspect of the present invention, in the sleep evaluation system according to the first aspect, the body movement detection sensor is provided at a position away from the subject along the optical axis on the head side of the subject lying on the bedding. It is characterized by that.

請求項１の発明によれば、被験者の状態を画像として撮像するカメラを有さず、撮像した画像の解析装置も必要としないので、構成が簡単でありシステム全体のコストが抑制される。また、体動検知センサは、その光軸が寝具平面と略平行であり、かつ寝具に横たわる被験者が寝返りをうつときの体動を検出する高さ範囲内に配置され、体動検知センサ側からの視野において寝具に横たわる被験者を略水平方向の側方から見るようになるので、冬季のように被験者が寝具を多く掛けた状態、又は厚めの寝具を掛けた状態で就寝する場合であっても被験者の体動を確実に検出できる。   According to the first aspect of the present invention, since there is no camera that captures the state of the subject as an image and no analysis device for the captured image is required, the configuration is simple and the cost of the entire system is suppressed. Further, the body motion detection sensor is disposed within a height range in which the optical axis is substantially parallel to the bedding plane and the body motion when the subject lying on the bedding turns over, from the body motion detection sensor side. Because the subject who is lying on the bedding in the field of view will be seen from the side in a substantially horizontal direction, even when the subject goes to sleep with a large amount of bedding or a thick bedding as in winter The body movement of the subject can be reliably detected.

請求項２の発明によれば、体動検知センサは、体動検知センサ側からの視野において、寝具に横たわっている被験者の寝具から露出した頭部を側方から見るようになるので、より正確に被験者の体動を検出できる。   According to the second aspect of the present invention, the body motion detection sensor is more accurate because the head exposed from the bedding of the subject lying on the bedding is viewed from the side in the visual field from the body motion detection sensor side. The body movement of the subject can be detected.

以下、本発明の一実施形態に係る睡眠評価システムについて図１乃至図５を参照して説明する。本実施形態の睡眠評価システム１は、図１及び図２に示されるように、寝具２に横たわっている被験者Ｐの頭部Ｐｈ側において被験者Ｐから所定距離離れた位置に被験者Ｐの頭部Ｐｈの高さと略同等の高さに設置された体動検知センサ３を備える。   Hereinafter, a sleep evaluation system according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. As shown in FIGS. 1 and 2, the sleep evaluation system 1 according to the present embodiment has the head Ph of the subject P at a position away from the subject P on the head Ph side of the subject P lying on the bedding 2. The body motion detection sensor 3 installed at a height substantially equal to the height of is provided.

体動検知センサ３は、焦電型赤外線センサであって、寝具２に横たわっている被験者Ｐの体から放射される赤外線を検知し、検知した赤外線の変動に基づいて被験者Ｐの体動を検知する。検知方法の詳細については後述する。   The body movement detection sensor 3 is a pyroelectric infrared sensor that detects infrared rays emitted from the body of the subject P lying on the bedding 2 and detects the body movements of the subject P based on the detected fluctuations in the infrared rays. To do. Details of the detection method will be described later.

体動検知センサ３が検知した被験者Ｐの体動は、体動情報としてパソコン４に送出される。パソコン４に送出された体動情報は、一定時間の体動情報が記憶され体動の頻度や大きさに応じて睡眠の質が判断される。例えば、所定の時間内における体動の頻度が予めパソコン４内に記憶された閾値よりも大きい場合は、睡眠の質が良くないと判定され、小さい場合は、睡眠の質が良いと判定される。   The body motion of the subject P detected by the body motion detection sensor 3 is sent to the personal computer 4 as body motion information. The body motion information sent to the personal computer 4 stores body motion information for a certain period of time, and the quality of sleep is determined according to the frequency and magnitude of body motion. For example, when the frequency of body movements within a predetermined time is larger than a threshold value stored in the personal computer 4 in advance, it is determined that the quality of sleep is not good, and when it is small, it is determined that the quality of sleep is good. .

なお、被験者Ｐは、敷布団２ａの上に横たわり図４及び図５に示されるように掛布団２ｂを掛けている。図１及び図２においては、被験者Ｐの姿勢が明瞭になるように掛布団２ｂが省略されている。   The subject P lies on the mattress 2a and hangs the comforter 2b as shown in FIGS. 1 and 2, the comforter 2b is omitted so that the posture of the subject P is clear.

体動検知センサ３は、図３（ａ）に示されるように焦電素子５の外周が多数の小さなフレネルレンズ６を有するドーム状のレンズ体７によって覆われたセンサヘッド８を備えている。多数のフレネルレンズ６によって焦電素子５上に収束される多数本の光軸９が形成される。被験者Ｐの体から放射された赤外線が各光軸９に沿って焦電素子５に集光され、焦電素子５に温度変化を生じさせる。焦電素子５は、生じた温度変化を電気量の変化として出力する。   The body motion detection sensor 3 includes a sensor head 8 in which the outer periphery of the pyroelectric element 5 is covered with a dome-shaped lens body 7 having a large number of small Fresnel lenses 6 as shown in FIG. A large number of optical axes 9 converged on the pyroelectric element 5 are formed by a large number of Fresnel lenses 6. Infrared rays radiated from the body of the subject P are collected on the pyroelectric element 5 along each optical axis 9 to cause a temperature change in the pyroelectric element 5. The pyroelectric element 5 outputs the generated temperature change as a change in the amount of electricity.

フレネルレンズ６は、図３（ｂ）に示されるようにセンサヘッド８の正面視においてドーム状のレンズ体７の表面にほぼ均等に分散して形成されている。これらの小フレネルレンズ６によって形成される多数本の光軸９は、図１において体動検知センサ３から約２０度の角度で放射状に延びるビーム状に示され、図４において各光軸９の断面が多数の小矩形で示される。図４に表れる光軸９の断面は、図１のＡ−Ａ位置における断面を示す。   As shown in FIG. 3B, the Fresnel lens 6 is formed so as to be almost evenly distributed on the surface of the dome-shaped lens body 7 in the front view of the sensor head 8. A large number of optical axes 9 formed by these small Fresnel lenses 6 are shown as beams extending radially from the body motion detection sensor 3 at an angle of about 20 degrees in FIG. 1, and in FIG. The cross section is indicated by a number of small rectangles. The cross section of the optical axis 9 shown in FIG. 4 shows a cross section at the position AA in FIG.

そして、体動検知センサ３は、側面視における光軸９の中心９ｃ（図１参照）が寝具２（敷布団２ａ）の平面（ＸＹ平面）と略平行になるように配置され、被験者Ｐの頭部Ｐｈ位置における光軸９に直交する領域Ｚ（以下、体動検知領域という）が、図４に示されるように寝具２に横たわる被験者Ｐが寝返りをうつときに被験者Ｐの体が移動する範囲を含み、それよりも若干大きくなるように構成されている。なお、請求項１における寝具の平面に略平行な光軸とは、本実施形態の場合光軸９の中心９ｃをいう。   The body motion detection sensor 3 is arranged such that the center 9c (see FIG. 1) of the optical axis 9 in a side view is substantially parallel to the plane (XY plane) of the bedding 2 (the mattress 2a). A region Z (hereinafter referred to as body motion detection region) orthogonal to the optical axis 9 at the position Ph is a range in which the body of the subject P moves when the subject P lying on the bedding 2 turns over as shown in FIG. It is comprised so that it may become slightly larger than it. In the present embodiment, the optical axis substantially parallel to the plane of the bedding means the center 9c of the optical axis 9 in this embodiment.

ここで、体動検知センサ３側からの視野において被験者Ｐが寝返りをうつときの被験者Ｐの体位がどのように変化するかについて、図５を参照して説明する。   Here, how the body posture of the subject P changes when the subject P turns over in the field of view from the body motion detection sensor 3 side will be described with reference to FIG.

図５において、被験者Ｐが上を向いて横たわっている状態（以下、上向き状態という）が左側に示され、寝返りをうって横向きになった状態（以下、横向き状態という）が右側に示される。上向き状態から横向き状態に変化する間に赤外線を放射する熱源の高さがＸＺ平面においてＺ方向へΔＺだけ増加する。   In FIG. 5, a state where the subject P is lying upward (hereinafter referred to as an upward state) is shown on the left side, and a state where the subject P is turned sideways after turning over (hereinafter referred to as a lateral state) is shown on the right side. While changing from the upward state to the lateral state, the height of the heat source that emits infrared light increases by ΔZ in the Z direction in the XZ plane.

つまり、被験者Ｐの頭部Ｐｈ側にある体動検知センサ３からの方向で見るときには、被験者Ｐの頭部Ｐｈ及び肩部Ｐｓは寝具２から露出しており、寝返りをうつことによって被験者Ｐの肩部Ｐｓが大きく上方へ移動し、その分だけ赤外線を放射する熱源の領域が見かけ上大きくなる。   That is, when looking in the direction from the body motion detection sensor 3 on the head Ph side of the subject P, the head Ph and the shoulder portion Ps of the subject P are exposed from the bedding 2, and the subject P is turned over by turning over. The shoulder Ps moves greatly upward, and the area of the heat source that radiates infrared light is apparently enlarged.

熱源の高さがΔＺだけ増加するとき、体動検知領域Ｚにおける各光軸９を通る赤外線の量が増加し、焦電素子５の表面温度が上昇され、焦電素子５は、その温度上昇を電気量（体動情報）として出力する。被験者Ｐが横向き状態から上向き状態へ体動するときには、上記とは逆になり、焦電素子５は、その温度下降を電気量（体動情報）として出力する。   When the height of the heat source increases by ΔZ, the amount of infrared rays passing through each optical axis 9 in the body motion detection region Z increases, the surface temperature of the pyroelectric element 5 rises, and the pyroelectric element 5 rises in temperature. Is output as an electric quantity (body movement information). When the subject P moves from the lateral state to the upward state, the above is reversed, and the pyroelectric element 5 outputs the temperature drop as an electric quantity (body movement information).

換言すると、被験者Ｐの頭部Ｐｈ付近における体動検知センサ３の体動検知領域Ｚが略垂直面（ＸＺ平面）に沿って形成されるので（図４）、被験者Ｐが寝返りをうつことによる赤外線を放射する熱源の変化（主にＺ方向の変化）が、体動検知領域Ｚにおける熱源を横切る光軸９の本数の変化として捉えられ、被験者Ｐの体動が体動検知センサ３によって確実に検知される。   In other words, since the body motion detection region Z of the body motion detection sensor 3 in the vicinity of the head Ph of the subject P is formed along a substantially vertical plane (XZ plane) (FIG. 4), the subject P is turned over. Changes in the heat source that emits infrared rays (mainly changes in the Z direction) are captured as changes in the number of optical axes 9 across the heat source in the body motion detection region Z, and the body motion of the subject P is reliably detected by the body motion detection sensor 3. Is detected.

以下、比較例を示すことによって、上記の点を補足的に説明する。比較例としての睡眠評価システムは、図６に示されるように、体動検知センサ１０３が寝具２に横たわっている被験者Ｐの垂直上方（Ｚ方向上方）に設置される。体動検知センサ１０３の構造は、体動検知センサ３と同一とする。   Hereinafter, the above points will be supplementarily described by showing comparative examples. As shown in FIG. 6, the sleep evaluation system as a comparative example is installed vertically above the subject P (upward in the Z direction) with the body motion detection sensor 103 lying on the bedding 2. The structure of the body motion detection sensor 103 is the same as that of the body motion detection sensor 3.

体動検知センサ１０３の有する光軸１０９は、下向きに所定の角度で広がる円錐状に形成され、被験者Ｐが掛ける掛布団２ｂの表面付近における各光軸１０９による体動検知領域Ｚｓは、図７に示されるように寝返りをうつ被験者Ｐの移動範囲とほぼ同等の範囲に形成される。   The optical axis 109 of the body motion detection sensor 103 is formed in a conical shape extending downward at a predetermined angle, and the body motion detection region Zs by each optical axis 109 in the vicinity of the surface of the comforter 2b on which the subject P hangs is shown in FIG. As shown, it is formed in a range approximately equivalent to the moving range of the subject P who is turning over.

ここで、被験者Ｐが左右に寝返りをうつときの赤外線を放射する熱源の変化は、体動検知センサ１０３側からの視野において体動検知領域Ｚｓ内における位置が移動するだけであるので、焦電素子５における温度変化は小さい。特に、冬季において被験者Ｐが多くの掛布団２ｂ（又は厚い掛布団２ｂ）を掛けるときには、実質的に熱源として検知することが可能な部分は、寝具２から露出した頭部Ｐｈのみとなるので、被験者Ｐが寝返りをうつときの焦電素子５において引き起こされる温度変化がさらに小さくなり、体動の検知が困難になる。   Here, since the change of the heat source that emits infrared rays when the subject P turns over from side to side, the position in the body motion detection region Zs moves only in the visual field from the body motion detection sensor 103 side. The temperature change in the element 5 is small. In particular, when the subject P hangs many comforters 2b (or thick comforters 2b) in the winter season, the only part that can be detected as a heat source is only the head Ph exposed from the bedding 2, so the subject P The temperature change caused in the pyroelectric element 5 when turning over is further reduced, making it difficult to detect body movement.

以上のように、本実施形態の睡眠評価システム１においては、焦電型赤外線センサから構成される体動検知センサ３が、寝具２に横たわる被験者Ｐの頭部Ｐｈ側において赤外線を集光する光軸９が寝具２の平面（ＸＹ平面）に略平行であり、かつ寝具２に横たわる被験者Ｐが寝返りをうつときの体動を検出する高さ範囲に配置されるので、体動検知センサ３からの視野において被験者Ｐの頭部Ｐｈ及び肩部Ｐｓが寝具２から露出して見え、被験者Ｐが寝返りをうつときの熱源の変化を熱源の大きさの変化として捉えることができ、体動をより確実に捉えることができる。特に、冬季のように被験者Ｐが寝具２を多く掛けた状態、又は厚めの掛布団２ｂを掛けた状態で就寝する場合であっても被験者Ｐの体動を確実に検出できる。   As described above, in the sleep evaluation system 1 of the present embodiment, the body motion detection sensor 3 configured by the pyroelectric infrared sensor collects infrared rays on the head Ph side of the subject P lying on the bedding 2. Since the axis 9 is substantially parallel to the plane (XY plane) of the bedding 2 and the subject P lying on the bedding 2 is placed in a height range for detecting body movement when turning over, the body movement detection sensor 3 The head Ph and shoulder Ps of the subject P appear to be exposed from the bedding 2 in the field of view, and the change in the heat source when the subject P is turned over can be regarded as the change in the size of the heat source. I can capture it reliably. In particular, the body movement of the subject P can be reliably detected even when the subject P goes to bed in the state where the subject P is hung on a large amount of the bedding 2 or in the state where the thick comforter 2b is hung.

なお、本実施形態における体動検知センサ３は、センサヘッド８に多数の小さなフレネルレンズ６を有し、被験者Ｐから放射される赤外線をフレネルレンズ６によって形成される多数本の光軸９に沿って集光するように構成されているが、センサヘッド８には集光のための１つのレンズ又は絞り開口が形成され、被験者Ｐから放射される赤外線は、１つのレンズ又は絞り開口によってセンサ３の前方に形成される所定の幅を有する１本の光軸９に沿って集光されるように構成されてもよい。   Note that the body motion detection sensor 3 in the present embodiment has a large number of small Fresnel lenses 6 in the sensor head 8, and the infrared rays emitted from the subject P are aligned along the multiple optical axes 9 formed by the Fresnel lenses 6. However, the sensor head 8 is formed with a single lens or diaphragm aperture for condensing, and the infrared rays emitted from the subject P are detected by the sensor 3 through the single lens or diaphragm aperture. The light beam may be condensed along one optical axis 9 having a predetermined width formed in front of the lens.

上記のように体動検知センサ３の光軸９が所定の幅を有する場合は、請求項１における寝具２の平面に平行な光軸とは、光軸９の幅方向における中心を通る軸のことをいう。   When the optical axis 9 of the body motion detection sensor 3 has a predetermined width as described above, the optical axis parallel to the plane of the bedding 2 in claim 1 is an axis passing through the center of the optical axis 9 in the width direction. That means.

また、本実施形態の睡眠評価システム１においては、体動検知センサ３として被験者Ｐの体から放射される赤外線を集光するパッシブ型の焦電型赤外線センサが用いられたが、センサ自体が発光源を有するアクティブ型のセンサが用いられてもよい。例えば、体動検知センサ３は、センサ自体が赤外線やレーザ光の発光源を有し、その発光源から被験者Ｐへ向けて照射した光が被験者Ｐの体によって反射された反射光を検知するものであってもよい。   In the sleep evaluation system 1 of the present embodiment, a passive pyroelectric infrared sensor that collects infrared rays emitted from the body of the subject P is used as the body motion detection sensor 3, but the sensor itself emits light. An active sensor having a source may be used. For example, the body motion detection sensor 3 has a light source of infrared light or laser light, and detects light reflected from the light source toward the subject P by the subject P's body. It may be.

体動検知センサ３がアクティブ型のセンサである場合の被験者Ｐの体動を検知する方法は、前述のように焦電素子５の表面に生じる温度変化を電気量の変化として検出する方法の他に三角測距法等の種々の方法が可能である。また、その場合の請求項１における寝具２の平面に平行な光軸とは、被験者Ｐの体によって反射され体動検知センサ３へ向かう反射光の光軸のことをいう。   The method of detecting the body motion of the subject P when the body motion detection sensor 3 is an active sensor is not limited to the method of detecting the temperature change occurring on the surface of the pyroelectric element 5 as a change in the amount of electricity as described above. In addition, various methods such as triangulation can be used. In this case, the optical axis parallel to the plane of the bedding 2 in claim 1 refers to the optical axis of the reflected light that is reflected by the body of the subject P and travels toward the body motion detection sensor 3.

本発明の一実施形態に係る睡眠評価システムの概略構成を示す側面図。The side view which shows schematic structure of the sleep evaluation system which concerns on one Embodiment of this invention. 同睡眠評価システムの概略構成を示す平面図。The top view which shows schematic structure of the sleep evaluation system. （ａ）は、同睡眠評価システムにおける体動検知センサの側断面図、（ｂ）は、同睡眠評価システムにおける体動検知センサの正面図。(A) is a sectional side view of the body movement detection sensor in the sleep evaluation system, and (b) is a front view of the body movement detection sensor in the sleep evaluation system. 同睡眠評価システムにおける体動検知センサの光軸によって形成される体動検知領域と寝具に横たわる被験者の位置関係を示す説明図。Explanatory drawing which shows the positional relationship of the test subject who lies on the body motion detection area | region formed with the optical axis of the body motion detection sensor in the sleep evaluation system, and the bedding. 寝具に横たわる被験者が寝返りをうつときの熱源の移動を示す説明図。Explanatory drawing which shows the movement of a heat source when the test subject who lies on bedding changes over. 比較例における体動検知センサと寝具の配置及び体動検知センサの光軸の態様を示す説明図。Explanatory drawing which shows the aspect of the optical axis of the arrangement | positioning of the body motion detection sensor and bedding in a comparative example, and a body motion detection sensor. 同比較例における体動検知センサの光軸によって形成される体動検知領域と被験者の移動範囲を示す説明図。Explanatory drawing which shows the body movement detection area | region formed with the optical axis of the body movement detection sensor in the comparative example, and a test subject's movement range.

符号の説明Explanation of symbols

１ 睡眠評価システム
２ 寝具
２ａ 敷布団（寝具）
２ｂ 掛布団（寝具）
３ 体動検知センサ
９ 光軸
９ｃ 光軸の中心
Ｐ 被験者
Ｐｈ 頭部 1 Sleep Evaluation System 2 Bedding 2a Bedding (Bedding)
2b Comforter (bedding)
3 body motion detection sensor 9 optical axis 9c optical axis center P subject Ph head

Claims (2)

寝具に横たわっている被験者の体動を検知することによって被験者の睡眠を評価する睡眠評価システムにおいて、
寝具から露出した被験者の体から放射される赤外線を検知し、又はセンサ自体が有する発光源から照射され被験者の体によって反射される反射光を検知する体動検知センサを備え、
前記体動検知センサは、その光軸が寝具平面と略平行であり、かつ寝具に横たわる被験者が寝返りをうつときの体動を検出する高さ範囲内に配置され、前記光軸に略直交する方向における前記赤外線又は反射光の変動に基づいて被験者の体動を検知することを特徴とする睡眠評価システム。 In the sleep evaluation system that evaluates the sleep of the subject by detecting the body movement of the subject lying on the bedding,
A body motion detection sensor that detects infrared light emitted from the body of the subject exposed from the bedding, or detects reflected light that is irradiated from a light source included in the sensor itself and reflected by the body of the subject;
The body motion detection sensor is disposed within a height range in which an optical axis thereof is substantially parallel to a bedding plane, and detects a body motion when the subject lying on the bedding turns over and is substantially orthogonal to the optical axis. A sleep evaluation system, wherein body movement of a subject is detected based on a change in the infrared ray or reflected light in a direction. 前記体動検知センサは、寝具に横たわっている被験者の頭部側において前記光軸に沿って被験者から離れた位置に設けられることを特徴とする請求項１に記載の睡眠評価システム。   The sleep evaluation system according to claim 1, wherein the body movement detection sensor is provided at a position away from the subject along the optical axis on the head side of the subject lying on the bedding.
JP2006165701A 2006-06-15 2006-06-15 Sleep evaluation system Active JP4697060B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006165701A JP4697060B2 (en) 2006-06-15 2006-06-15 Sleep evaluation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006165701A JP4697060B2 (en) 2006-06-15 2006-06-15 Sleep evaluation system

Publications (2)

Publication Number Publication Date
JP2007330500A true JP2007330500A (en) 2007-12-27
JP4697060B2 JP4697060B2 (en) 2011-06-08

Family

ID=38930530

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006165701A Active JP4697060B2 (en) 2006-06-15 2006-06-15 Sleep evaluation system

Country Status (1)

Country Link
JP (1) JP4697060B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010035485A1 (en) * 2008-09-29 2010-04-01 有限会社グーテック An operation discrimination device, a method for constructing an operation discrimination model, an operation discrimination method, and an operation discrimination computer program
KR101341291B1 (en) 2012-09-26 2013-12-12 세종대학교산학협력단 Method of quiescence state recognition based on depth sensor and apparatus thereof
WO2021100815A1 (en) * 2019-11-22 2021-05-27 社会福祉法人聖隷福祉事業団 Movement data collection method, movement data analysis system, movement diagnosis assistance system, and analysis program

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0430504U (en) * 1990-07-05 1992-03-11
JPH04109960A (en) * 1990-08-30 1992-04-10 Matsushita Electric Ind Co Ltd Evaluating device for sleep
JPH04295533A (en) * 1991-03-25 1992-10-20 Aisin Seiki Co Ltd Temperature controller with sleep detecting function
JPH0966077A (en) * 1995-08-31 1997-03-11 Seikosha Co Ltd Human body detector for bed
JPH105180A (en) * 1996-06-24 1998-01-13 Matsushita Electric Ind Co Ltd Detector for detecting presence on bed and detecting method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0430504U (en) * 1990-07-05 1992-03-11
JPH04109960A (en) * 1990-08-30 1992-04-10 Matsushita Electric Ind Co Ltd Evaluating device for sleep
JPH04295533A (en) * 1991-03-25 1992-10-20 Aisin Seiki Co Ltd Temperature controller with sleep detecting function
JPH0966077A (en) * 1995-08-31 1997-03-11 Seikosha Co Ltd Human body detector for bed
JPH105180A (en) * 1996-06-24 1998-01-13 Matsushita Electric Ind Co Ltd Detector for detecting presence on bed and detecting method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010035485A1 (en) * 2008-09-29 2010-04-01 有限会社グーテック An operation discrimination device, a method for constructing an operation discrimination model, an operation discrimination method, and an operation discrimination computer program
JPWO2010035485A1 (en) * 2008-09-29 2012-02-16 有限会社グーテック Motion discrimination device, motion discrimination model construction method, motion discrimination method, and motion discrimination computer program
KR101341291B1 (en) 2012-09-26 2013-12-12 세종대학교산학협력단 Method of quiescence state recognition based on depth sensor and apparatus thereof
WO2021100815A1 (en) * 2019-11-22 2021-05-27 社会福祉法人聖隷福祉事業団 Movement data collection method, movement data analysis system, movement diagnosis assistance system, and analysis program

Also Published As

Publication number Publication date
JP4697060B2 (en) 2011-06-08

Similar Documents

Publication Publication Date Title
Grimm et al. Sleep position classification from a depth camera using bed aligned maps
JP3689720B2 (en) 3D shape measuring device
US9436873B2 (en) Method and system for monitoring the skin color of a user
JP6171415B2 (en) Information processing apparatus, information processing method, and program
US20120283979A1 (en) Sensor system
WO2014024364A1 (en) Object detection device, object detection method, and program
US20200258364A1 (en) Human Activity Detection Using Thermal Data and Time-of-Flight Sensor Data
JP6417670B2 (en) Monitoring device, monitoring system, monitoring method, monitoring program, and computer-readable recording medium recording the monitoring program
TWI543745B (en) Optical array system and method for tracking pupil with retro-reflectivity
US20100207909A1 (en) Detection module and an optical detection device comprising the same
JP4697060B2 (en) Sleep evaluation system
JP6780641B2 (en) Image analysis device, image analysis method, and image analysis program
JP2007020844A (en) Apparatus and method for detecting motion of leaving one&#39;s sickbed
JP3710133B2 (en) State analysis apparatus and state analysis method
CN106575464A (en) Detecting a movement and/or a position of an object to be monitored
KR102205964B1 (en) Fall prevention system and fall prevention method using dual camera and infrared camera
Aoki et al. Development of non-restrictive sensing system for sleeping person using fiber grating vision sensor
JP3939224B2 (en) Area monitoring device
JP4576416B2 (en) Monitoring device
JP2015222191A (en) Behavior detection system and method using infrared array sensor
KR20140042016A (en) Proximity sensor and proximity sensing method using design vision sensor
CN113892923A (en) Physiological parameter detection method and intelligent mattress
JP6582305B1 (en) Watch system, watch method and program.
JP2005253608A (en) Condition analysis apparatus
US20070241262A1 (en) Optical sensing unit for an optical input device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090123

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20100826

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100831

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20101012

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20101109

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20101209

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110201

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110214

R150 Certificate of patent or registration of utility model

Ref document number: 4697060

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150