JPH04272746A - Sleep detecting device - Google Patents
Sleep detecting deviceInfo
- Publication number
- JPH04272746A JPH04272746A JP3032674A JP3267491A JPH04272746A JP H04272746 A JPH04272746 A JP H04272746A JP 3032674 A JP3032674 A JP 3032674A JP 3267491 A JP3267491 A JP 3267491A JP H04272746 A JPH04272746 A JP H04272746A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- bedding
- integrator
- determination means
- group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 15
- 230000000284 resting effect Effects 0.000 claims description 8
- 230000004044 response Effects 0.000 claims description 7
- 230000010354 integration Effects 0.000 claims description 3
- 241001669679 Eleotris Species 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000002033 PVDF binder Substances 0.000 description 2
- 210000004556 brain Anatomy 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000004424 eye movement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 210000004761 scalp Anatomy 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Invalid Beds And Related Equipment (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は睡眠を検出する睡眠検出
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 sleep detection device for detecting sleep.
【０００２】0002
【従来の技術】従来この種の睡眠検出装置は、例えば人
体の脳波や眼球運動を検出して検出信号の波形処理を行
なって入眠を判定するもの（特開昭６２−２５３０３４
号公報）や、人体の脈波を検出して検出信号の波形処理
を行なって入眠を判定するもの（特開昭６３−１５００
４７号公報）であり、いずれも脳波や眼球運動、脈波等
の生体信号を検出する検出手段を直接人体の頭皮または
皮膚に装着する構成であるため、装着による違和感があ
り睡眠が乱されるといった課題があった。この点に鑑み
て、本発明者らは寝具に配設した圧電素子により人体に
非接触で体動を検出し、体動の静止時間がある設定時間
以上になった場合に入眠したと判定する睡眠検出装置を
先に提案した。2. Description of the Related Art Conventionally, this type of sleep detection device detects, for example, brain waves and eye movements of a human body and performs waveform processing on the detection signal to determine sleep onset (Japanese Patent Laid-Open No. 62-253034
(Japanese Unexamined Patent Publication No. 1500/1983), and one that detects the pulse wave of the human body and processes the detected signal to determine whether or not someone has fallen asleep
Publication No. 47), and in both cases, the detection means for detecting biological signals such as brain waves, eye movements, and pulse waves is attached directly to the scalp or skin of the human body, which causes a sense of discomfort and disrupts sleep. There were such issues. In view of this, the present inventors detect body movements without contacting the human body using piezoelectric elements installed in bedding, and determine that sleep has occurred when the period of quiescent body movement exceeds a certain set time. We first proposed a sleep detection device.
【０００３】図５は上記従来の睡眠検出装置のブロック
図である。同図よりこの装置は寝具に配設された圧電素
子１、圧電素子の信号のある特定の周波数成分をろ波す
るフィルター２、増幅器３、整流器４、積分器５、不在
判定手段６、在床判定手段７、体動判定手段８、タイマ
ー９、入眠判定手段１０とから構成され、以下のように
作用する。ここで、寝具上に人体が存在する場合の人体
の体動を次の２つに分けて定義する。人体の心臓の活動
や呼吸活動により伝搬される身体の微小な体動を細体動
と呼び、入床・起床・寝返りといった身体の大きな体動
を粗体動と呼ぶ。さて、上記のような人体の細体動と粗
体動により寝具に配設された圧電素子１が変形を受ける
と、その変形の程度に応じて圧電素子１より電圧が発生
する。この出力信号はフィルター２によりろ波され、さ
らに増幅器３による増幅、整流器４による整流、積分器
５により積分される。図６に積分器５の出力信号の波形
図を示す。図より入床・起床・寝返りといった粗体動に
対応してレベルの高い出力が得られる一方、在床してい
て安静状態であれば心拍や呼吸といった細体動に対応し
てレベルの低い出力が得られる。この事実に基づき、積
分器５の信号レベルに応じて以下の判定がなされる。積
分器５の信号レベルがあらかじめ定められた第１の設定
値Ｖａ未満である場合は不在判定手段６により寝具上に
人体が存在しないと判定される。積分器５の信号レベル
が第１の設定値Ｖａ以上でありかつあらかじめ定められ
た第２の設定値Ｖｂ未満である場合は在床判定手段７に
より寝具上に人体が安静状態で存在すると判定される。
積分器５の信号レベルが第２の設定値Ｖｂ以上である場
合は体動判定手段８により寝具上で人体が粗体動を生起
したと判定される。次に、在床判定手段７の信号がある
場合にはタイマー９により計時動作が開始される。ただ
し、この計時動作は不在判定手段７または体動判定手段
９の信号によりリセットされる。そして、入眠判定手段
１０ではタイマー９により計時される計時時間があらか
じめ定められた設定時間を越えれば寝具上で人体が入眠
したと判定される。FIG. 5 is a block diagram of the conventional sleep detection device. As shown in the figure, this device includes a piezoelectric element 1 disposed on the bedding, a filter 2 for filtering a certain frequency component of the signal of the piezoelectric element, an amplifier 3, a rectifier 4, an integrator 5, an absence determination means 6, and a bed. It is composed of a determining means 7, a body movement determining means 8, a timer 9, and a sleep onset determining means 10, and operates as follows. Here, the body movements of the human body when the human body is present on the bedding are divided into the following two types and defined. The minute body movements propagated by the human heart's activity and respiratory activity are called fine body movements, and the large body movements such as getting into bed, getting up, and turning over are called gross body movements. Now, when the piezoelectric element 1 disposed on the bedclothes is deformed due to the fine and coarse movements of the human body as described above, a voltage is generated from the piezoelectric element 1 according to the degree of the deformation. This output signal is filtered by a filter 2, further amplified by an amplifier 3, rectified by a rectifier 4, and integrated by an integrator 5. FIG. 6 shows a waveform diagram of the output signal of the integrator 5. As shown in the figure, high-level output is obtained in response to gross body movements such as getting into bed, getting up, and turning over, while low-level output is obtained in response to fine body movements such as heartbeat and breathing when the patient is in bed and at rest. is obtained. Based on this fact, the following determination is made depending on the signal level of the integrator 5. When the signal level of the integrator 5 is less than a predetermined first set value Va, the absence determining means 6 determines that there is no human body on the bedding. If the signal level of the integrator 5 is equal to or higher than the first set value Va and lower than the predetermined second set value Vb, the bed presence determining means 7 determines that a human body is present on the bedding in a resting state. Ru. When the signal level of the integrator 5 is equal to or higher than the second set value Vb, the body movement determining means 8 determines that the human body has made a gross body movement on the bedding. Next, when there is a signal from the bed presence determining means 7, the timer 9 starts a time counting operation. However, this timekeeping operation is reset by a signal from the absence determining means 7 or the body movement determining means 9. Then, the sleep onset determination means 10 determines that the human body has fallen asleep on the bedding if the time measured by the timer 9 exceeds a predetermined set time.
【０００４】0004
【発明が解決しようとする課題】しかしながら、上記技
術の睡眠検出装置では、圧電素子が寝具へ１本しか配設
されていなかったため、例えば就寝者の寝相が悪かった
り幼児が就寝したりすると圧電素子が配設されている位
置から就寝者の身体が離れてしまい、確実に体動を検出
することができないといった課題があった。[Problems to be Solved by the Invention] However, in the sleep detection device of the above technology, only one piezoelectric element is disposed on the bedding. There was a problem in that the sleeper's body moved away from the position where the sleeper was placed, making it impossible to reliably detect body movements.
【０００５】本発明は上記課題を解決するもので、その
目的は、就寝者の寝相が悪かったり幼児が就寝した場合
でも就寝者の体動を確実に検出して入眠を判定する睡眠
検出装置を提供することにある。The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a sleep detection device that reliably detects the body movements of a sleeper and determines whether he or she has fallen asleep even if the sleeper is in a bad sleeping position or an infant has gone to bed. It is about providing.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に本発明は、寝具に配設された複数の圧電素子と、前記
圧電素子各々の信号についてある特定の周波数成分をろ
波するフィルター群と、前記フィルター各々の信号を増
幅する増幅器群と、前記増幅器各々の信号を整流する整
流器群と、前記整流器各々の信号を積分する積分器群と
、前記積分器群のうち全ての積分器の信号レベルがあら
かじめ定められた第１の設定値未満である場合は前記寝
具上に人体が存在しないと判定する不在判定手段と、前
記積分器群のうち少なくとも１つの積分器の信号レベル
が前記第１の設定値以上でありかつあらかじめ定められ
た第２の設定値未満である場合は前記寝具上に人体が安
静状態で存在すると判定する在床判定手段と、前記積分
器群のうち少なくとも１つの積分器の信号レベルが前記
第２の設定値以上である場合は前記寝具上で人体が体動
を生起したと判定する体動判定手段と、前記体動判定手
段の信号により前記在床判定手段の信号により計時動作
を開始するとともに前記不在判定手段または前記体動判
定手段の信号により計時動作をリセットするタイマーと
、前記タイマーにより計時される計時時間があらかじめ
定められた設定時間を越えれば前記寝具上で人体が入眠
したと判定する入眠判定手段とから構成される。[Means for Solving the Problems] In order to achieve the above object, the present invention includes a plurality of piezoelectric elements disposed in bedding, and a group of filters that filter a specific frequency component of a signal from each of the piezoelectric elements. , an amplifier group for amplifying the signals of each of the filters, a rectifier group for rectifying the signals of each of the amplifiers, an integrator group for integrating the signals of each of the rectifiers, and a group of integrators for all the integrators in the integrator group. absence determining means for determining that a human body is not present on the bedding when the signal level is less than a predetermined first setting value; a bed presence determination means for determining that a human body is present on the bedding in a resting state when the value is equal to or higher than a predetermined second set value; and at least one of the integrator group. body movement determining means for determining that a human body has caused a body movement on the bedding when the signal level of the integrator is equal to or higher than the second set value; and the bed presence determining means based on a signal from the body movement determining means. a timer that starts a timekeeping operation in response to a signal from the absence determining means or the body movement determining means, and resets the timekeeping operation in response to a signal from the absence determining means or the body movement determining means; and sleep onset determination means for determining that the human body has fallen asleep.
【０００７】[0007]
【作用】本発明は上記構成によって以下のように作用す
る。寝具上に人体が存在する場合、人体の細体動または
粗体動により寝具に配設された複数の圧電素子が変形を
受けると、その変形の程度に応じて各々の圧電素子より
電圧が発生する。これらの出力信号はフィルター群の各
々のフィルターによりろ波され、増幅器群による増幅、
整流器群による整流、積分器群による積分の処理が行な
われる。次に積分器群のなかの各積分器の信号レベルに
応じて以下の判定がなされる。すなわち、積分器群のう
ち全ての積分器の信号レベルがあらかじめ定められた第
１の設定値未満である場合は不在判定手段により前記寝
具上に人体が存在しないと判定される。積分器群のうち
少なくとも１つの積分器の信号レベルが前記第１の設定
値以上でありかつあらかじめ定められた第２の設定値未
満である場合は在床判定手段により前記寝具上に人体が
安静状態で存在する（細体動状態である）と判定される
。前記積分器群のうち少なくとも１つの積分器の信号レ
ベルが前記第２の設定値以上である場合は体動判定手段
により前記寝具上で人体が体動を生起した（粗体動状態
である）と判定される。次に、在床判定手段の信号があ
る場合にはタイマーにより計時動作が開始される。ただ
し、この計時動作は不在判定手段または体動判定手段の
信号によりリセットされる。そして、入眠判定手段では
タイマーにより計時される計時時間があらかじめ定めら
れた設定時間を越えれば寝具上で人体が入眠したと判定
される。[Operation] The present invention operates as follows with the above structure. When a human body is present on the bedding, when multiple piezoelectric elements arranged on the bedding are deformed due to fine or gross body movements of the human body, a voltage is generated from each piezoelectric element depending on the degree of deformation. do. These output signals are filtered by each filter in the filter group, amplified by the amplifier group,
Rectification is performed by a group of rectifiers, and integration is performed by a group of integrators. Next, the following determination is made depending on the signal level of each integrator in the integrator group. That is, when the signal levels of all the integrators in the integrator group are less than a predetermined first setting value, the absence determining means determines that there is no human body on the bedclothes. If the signal level of at least one integrator out of the integrator group is equal to or higher than the first set value and lower than the predetermined second set value, the bed presence determination means determines that the human body is resting on the bedding. It is determined that the body is in a state of slow movement (a state of slow body movement). If the signal level of at least one of the integrators in the integrator group is equal to or higher than the second set value, the body movement determining means determines that the human body has made a body movement on the bedding (the body is in a rough body movement state). It is determined that Next, when there is a signal from the bed presence determining means, the timer starts a time counting operation. However, this timekeeping operation is reset by a signal from the absence determining means or the body movement determining means. The sleep onset determination means determines that the human body has fallen asleep on the bedding if the time measured by the timer exceeds a predetermined set time.
【０００８】[0008]
【実施例】以下本発明の一実施例を添付図面に基づいて
説明する。図１は本実施例をベッドに装着した際の斜視
図、図２はブロック図で、ここでは圧電素子を２個使用
している。図１および図２において、１４ａ、１４ｂは
圧電素子１ａ、１ｂを内蔵したベルトで、端部がホック
１５で着脱自在になっており、図１のようにマットレス
１１の表面の胸元側と足元側にそれぞれ装着されている
。圧電素子１ａ、１ｂはポリフッ化ビニリデン（ＰＶＤ
Ｆ）等の高分子圧電材料を薄膜状にし両面に可とう性の
電極膜を付着させテープ状に成形されたものである。
１２は回路ユニットで、フィルター２ａ、２ｂ、増幅器
３ａ、３ｂ、整流器４ａ、４ｂ、積分器５ａ、５ｂ、不
在判定手段６、在床判定手段７、体動判定手段８、タイ
マー９および入眠判定手段１０（いずれも図１では図示
せず）を内蔵している。圧電素子１ａ、１ｂと回路ユニ
ット１２とはシールド線１３ａ、１３ｂで接続されてい
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view of this embodiment when it is mounted on a bed, and FIG. 2 is a block diagram, in which two piezoelectric elements are used. In FIGS. 1 and 2, 14a and 14b are belts containing piezoelectric elements 1a and 1b, and the ends are detachable with hooks 15, and as shown in FIG. are installed on each. The piezoelectric elements 1a and 1b are made of polyvinylidene fluoride (PVD).
A thin film made of a polymeric piezoelectric material such as F) is formed into a tape shape with flexible electrode films attached to both sides. Reference numeral 12 denotes a circuit unit, which includes filters 2a, 2b, amplifiers 3a, 3b, rectifiers 4a, 4b, integrators 5a, 5b, absence determining means 6, presence in bed determining means 7, body movement determining means 8, timer 9, and sleep onset determining means. 10 (none of which are shown in FIG. 1). The piezoelectric elements 1a, 1b and the circuit unit 12 are connected by shielded wires 13a, 13b.
【０００９】この実施例の構成によれば、本発明は以下
のように作用する。寝具上に人体が存在する場合、人体
の細体動または粗体動により寝具に配設された圧電素子
１ａ、１ｂが変形を受けると、その変形の程度に応じて
圧電素子より電圧が発生する。この出力信号はフィルタ
ー２ａ、２ｂによりろ波され、その信号は増幅器３ａ、
３ｂによる増幅、整流器４ａ、４ｂによる整流、積分器
５ａ、５ｂによる積分の処理が行なわれる。図３に実際
の就寝の際の積分器５ａ、５ｂの信号波形を示す。図よ
り入床、寝返り、離床といった粗体動の場合は全身にわ
たる動作であるので圧電素子１ａ、１ｂともに大きな変
形を受け、積分器５ａ、５ｂともに同様な信号波形がで
るが、手のみとか足のみを少し動かすといった場合は、
それに対応する圧電素子のみが変形を受けるので両者と
もには同様な波形は得られない。また、細体動のように
人体の心臓の活動や呼吸活動により伝搬される身体の微
小な体動は心臓や肺のある躯幹部がもっとも大きく、足
部まではほとんどそのような体動の伝搬がない。したが
って、在床して安静状態の場合、積分器５ａでは細体動
の信号波形がでるが、積分器５ｂでは細体動の信号波形
は認められない。According to the configuration of this embodiment, the present invention operates as follows. When a human body is present on the bedding, when the piezoelectric elements 1a and 1b disposed on the bedding are deformed due to fine or gross body movements of the human body, a voltage is generated from the piezoelectric elements according to the degree of the deformation. . This output signal is filtered by filters 2a, 2b, and the signal is passed through amplifiers 3a,
3b, rectification by rectifiers 4a and 4b, and integration by integrators 5a and 5b. FIG. 3 shows signal waveforms of the integrators 5a and 5b during actual sleep. As can be seen from the figure, gross body movements such as entering the bed, turning over, and leaving the bed involve the whole body, so both the piezoelectric elements 1a and 1b undergo large deformations, and the integrators 5a and 5b produce similar signal waveforms. If you want to move the chisel a little,
Since only the corresponding piezoelectric element undergoes deformation, similar waveforms cannot be obtained for both. In addition, minute body movements, which are propagated by the human heart and breathing activities, are most pronounced in the trunk, where the heart and lungs are located, and most of the propagation of such body movements does not reach the feet. There is no. Therefore, when the patient is in bed and in a resting state, the integrator 5a produces a signal waveform of fine body movement, but the integrator 5b does not recognize a signal waveform of fine body movement.
【００１０】以上の事実より、圧電素子５ａ、５ｂの配
設位置を適当に選ぶことにより少なくとも一方の圧電素
子により安静状態における細体動を検出することができ
、さらに、入床、寝返り、離床といった粗体動のみなら
ず、手のみとか足のみを少し動かすといった粗体動も確
実に検出することができる。これに基づき、積分器５ａ
、５ｂの信号レベルに応じて以下の判定がなされる。
積分器５ａ、５ｂ両者ともその信号レベルがあらかじめ
定められた第１の設定値Ｖａ未満である場合は不在判定
手段６により寝具上に人体が存在しないと判定される。
また、積分器５ａ、５ｂのうち少なくとも１つの積分器
の信号レベルが第１の設定値Ｖａ以上でありかつあらか
じめ定められた第２の設定値Ｖｂ未満である場合は在床
判定手段７により寝具上に人体が安静状態で存在する（
細体動状態である）と判定される。さらに積分器５ａ、
５ｂのうち少なくとも１つの積分器の信号レベルが第２
の設定値Ｖｂ以上である場合は体動判定手段８により寝
具上で人体が体動を生起した（粗体動状態である）と判
定される。From the above facts, by appropriately selecting the placement positions of the piezoelectric elements 5a and 5b, at least one piezoelectric element can detect small body movements in a resting state, and furthermore, it is possible to detect small body movements in a resting state. It is possible to reliably detect gross body movements such as small movements of only the hands or feet. Based on this, the integrator 5a
, 5b, the following determination is made. If the signal levels of both the integrators 5a and 5b are less than a predetermined first set value Va, the absence determining means 6 determines that there is no human body on the bedding. Further, if the signal level of at least one of the integrators 5a and 5b is equal to or higher than the first set value Va and less than a predetermined second set value Vb, the bed presence determination means 7 determines whether the bedding A human body exists in a resting state above (
It is determined that the patient is in a state of slow body movement. Furthermore, an integrator 5a,
5b, the signal level of at least one integrator is the second
If the value is equal to or greater than the set value Vb, the body movement determining means 8 determines that the human body has made a body movement on the bedding (the body is in a gross body movement state).
【００１１】次に、在床判定手段７の信号がある場合に
はタイマー９により計時動作が開始される。ただし、こ
の計時動作は不在判定手段６または体動判定手段８の信
号によりリセットされる。そして、入眠判定手段１０で
はタイマー９により計時される計時時間があらかじめ定
められた設定時間を越えれば寝具上で人体が入眠したと
判定される。前記設定時間に関しては、発明者らが行な
った睡眠実験により約１５分が適当との知見を得ている
。また、Ｖａ、Ｖｃは睡眠実験により設定することがで
きる。Next, when there is a signal from the bed presence determining means 7, the timer 9 starts a time counting operation. However, this timekeeping operation is reset by a signal from the absence determining means 6 or the body movement determining means 8. Then, the sleep onset determination means 10 determines that the human body has fallen asleep on the bedding if the time measured by the timer 9 exceeds a predetermined set time. Regarding the set time, the inventors have obtained knowledge from sleep experiments that about 15 minutes is appropriate. Further, Va and Vc can be set by a sleep experiment.
【００１２】上記作用により本実施例によれば、寝具に
圧電素子を複数個配設したので就寝者の寝相が悪かった
り幼児が就寝していても、少なくとも１つの圧電素子に
より就寝者の細体動を確実に検出することができるとと
もに、入床、寝返り、離床といった粗体動のみならず、
手のみとか足のみを少し動かすといった粗体動も確実に
検出することができ、従来よりも入眠の判定を精度良く
行なうことができるといった効果がある。Due to the above-mentioned effects, according to this embodiment, a plurality of piezoelectric elements are disposed on the bedding, so even if the sleeper is in a bad sleeping position or a small child is sleeping, at least one piezoelectric element can control the narrow body of the sleeper. In addition to being able to reliably detect movements, it also detects not only gross body movements such as entering the bed, turning over, and leaving the bed.
It is also possible to reliably detect gross body movements, such as small movements of only the hands or feet, and has the effect of making it possible to determine whether or not you are falling asleep more accurately than before.
【００１３】なお、圧電素子１ａ、１ｂを内蔵したベル
ト１４ａ、１４ｂは端部が着脱可能になっているので就
寝者の体動を検出しやすいよう就寝者の身長や寝相に合
わせて寝具への装着を調節することができる。Furthermore, since the ends of the belts 14a and 14b containing the piezoelectric elements 1a and 1b are removable, they can be attached to the bedding according to the height and sleeping position of the sleeper so that the body movement of the sleeper can be easily detected. Wearing can be adjusted.
【００１４】また、圧電素子１ａ、１ｂを内蔵したベル
ト１４ａ、１４ｂは図４に示すようにマットレス１１の
体軸方向に装着してもよく、就寝中の移動が体軸方向に
多い場合には上記実施例の装着方法よりも体動を検出す
るのに効果的である。Furthermore, the belts 14a and 14b containing the piezoelectric elements 1a and 1b may be attached to the mattress 11 in the body axis direction as shown in FIG. This is more effective in detecting body movements than the mounting method of the above embodiment.
【００１５】また、圧電素子の個数を増やすことにより
検出精度をさらに向上させることができる。Furthermore, detection accuracy can be further improved by increasing the number of piezoelectric elements.
【００１６】さらに、上記実施例では圧電素子１ａ、１
ｂを内蔵したベルト１４ａ、１４ｂをマットレス１１に
配設したが、上記細体動が検出できる範囲内であれば、
複数の圧電素子をマットレス１１内部に内蔵したりベッ
ドフレームに配設する構成としてもよいし、さらにふと
んやシーツ、まくら等に内蔵あるいは配設できるような
構成としてもよい。Furthermore, in the above embodiment, the piezoelectric elements 1a, 1
Although the belts 14a and 14b with built-in body movements are installed on the mattress 11, as long as the above-mentioned small body movements are within the range that can be detected,
A plurality of piezoelectric elements may be built into the mattress 11 or placed in a bed frame, or may be built into or placed in a futon, sheet, pillow, or the like.
【００１７】[0017]
【発明の効果】以上説明したように本発明の睡眠検出装
置によれば、寝具に圧電素子を複数個配設したので就寝
者の寝相が悪かったり幼児が就寝していても、少なくと
も１つの圧電素子により就寝者の細体動を確実に検出す
ることができるとともに、入床、寝返り、離床といった
粗体動のみならず、手のみとか足のみを少し動かすとい
った粗体動も確実に検出することができ、従来よりも入
眠の判定を精度良く行なうことができるといった効果が
ある。As explained above, according to the sleep detection device of the present invention, since a plurality of piezoelectric elements are arranged on the bedding, even if the sleeper is in a bad sleeping position or an infant is sleeping, at least one piezoelectric element can be detected. The device can reliably detect the fine body movements of a sleeping person, and also reliably detect not only coarse body movements such as entering bed, turning over, and leaving the bed, but also coarse body movements such as slightly moving only the hands or feet. This has the effect that sleep onset can be determined more accurately than before.
【図１】本発明の一実施例における睡眠検出装置の外観
斜視図FIG. 1 is an external perspective view of a sleep detection device according to an embodiment of the present invention.
【図２】本発明の一実施例における睡眠判定装置のブロ
ック図FIG. 2 is a block diagram of a sleep determination device according to an embodiment of the present invention.
【図３】本発明の一実施例における積分器からの出力を
示す波形図FIG. 3 is a waveform diagram showing the output from the integrator in one embodiment of the present invention.
【図４】本発明の他の実施例における睡眠検出装置の外
観斜視図FIG. 4 is an external perspective view of a sleep detection device according to another embodiment of the present invention.
【図５】従来の睡眠検出装置のブロック図[Figure 5] Block diagram of a conventional sleep detection device
【図６】従来
の睡眠検出装置の積分器からの出力を示す波形図[Figure 6] Waveform diagram showing the output from the integrator of a conventional sleep detection device
１ａ、１ｂ 圧電素子 ２ａ、２ｂ フィルター ３ 増幅器 ４ 整流器 ５ 積分器 ６ 不在判定手段 ７ 在床判定手段 ８ 体動判定手段 ９ タイマー １０ 入眠判定手段 １２ 回路ユニット 1a, 1b piezoelectric element 2a, 2b filter 3 Amplifier 4 Rectifier 5 Integrator 6 Absence determination means 7 Bed occupancy determination means 8 Body movement determination means 9. Timer 10 Sleep onset determination means 12 Circuit unit
Claims (1)
前記圧電素子各々の信号についてある特定の周波数成分
をろ波するフィルター群と、前記フィルター各々の信号
を増幅する増幅器群と、前記増幅器各々の信号を整流す
る整流器群と、前記整流器各々の信号を積分する積分器
群と、前記積分器群のうち全ての積分器の信号レベルが
あらかじめ定められた第１の設定値未満である場合は前
記寝具上に人体が存在しないと判定する不在判定手段と
、前記積分器群のうち少なくとも１つの積分器の信号レ
ベルが前記第１の設定値以上でありかつあらかじめ定め
られた第２の設定値未満である場合は前記寝具上に人体
が安静状態で存在すると判定する在床判定手段と、前記
積分器群のうち少なくとも１つの積分器の信号レベルが
前記第２の設定値以上である場合は前記寝具上で人体が
体動を生起したと判定する体動判定手段と、前記体動判
定手段の信号により前記在床判定手段の信号により計時
動作を開始するとともに前記不在判定手段または前記体
動判定手段の信号により計時動作をリセットするタイマ
ーと、前記タイマーにより計時される計時時間があらか
じめ定められた設定時間を越えれば前記寝具上で人体が
入眠したと判定する入眠判定手段とからなる睡眠検出装
置。Claim 1: A plurality of piezoelectric elements arranged on bedding;
a group of filters that filter a specific frequency component of the signal of each of the piezoelectric elements; a group of amplifiers that amplify the signal of each of the filters; a group of rectifiers that rectify the signal of each of the amplifiers; an integrator group that performs integration; and an absence determination means that determines that there is no human body on the bedding when the signal level of all the integrators among the integrator group is less than a predetermined first setting value. , when the signal level of at least one integrator among the integrator group is equal to or higher than the first set value and lower than a predetermined second set value, the human body is present on the bedding in a resting state. a bed presence determination means that determines that the human body has caused a body movement on the bedding when the signal level of at least one integrator of the integrator group is equal to or higher than the second set value; motion determining means; a timer that starts a timekeeping operation in response to a signal from the bed presence determination means in response to a signal from the body movement determination means and resets the timekeeping operation in response to a signal from the absence determination means or the body movement determination means; and the timer. A sleep detection device comprising sleep onset determination means for determining that a human body has fallen asleep on the bedding if the time measured by the timer exceeds a predetermined set time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3032674A JP2768025B2 (en) | 1991-02-27 | 1991-02-27 | Sleep detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3032674A JP2768025B2 (en) | 1991-02-27 | 1991-02-27 | Sleep detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04272746A true JPH04272746A (en) | 1992-09-29 |
| JP2768025B2 JP2768025B2 (en) | 1998-06-25 |
Family
ID=12365422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3032674A Expired - Fee Related JP2768025B2 (en) | 1991-02-27 | 1991-02-27 | Sleep detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2768025B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06225864A (en) * | 1993-02-04 | 1994-08-16 | Matsushita Electric Ind Co Ltd | Sleeping device |
| JPH06237921A (en) * | 1993-02-18 | 1994-08-30 | Matsushita Electric Ind Co Ltd | Sleeping device |
| JPH0779933A (en) * | 1993-09-14 | 1995-03-28 | Matsushita Electric Ind Co Ltd | System for assessment of resting condition in bed |
| JPH08103430A (en) * | 1994-10-06 | 1996-04-23 | Matsushita Electric Ind Co Ltd | Human body detector |
| JP2005237684A (en) * | 2004-02-26 | 2005-09-08 | France Bed Co Ltd | Bed apparatus |
| JP2006026099A (en) * | 2004-07-15 | 2006-02-02 | Sanyo Electric Co Ltd | Sleeper stimulating apparatus |
| JP2008113797A (en) * | 2006-11-02 | 2008-05-22 | Aisin Seiki Co Ltd | Biological signal detecting system |
| WO2008069017A1 (en) * | 2006-12-08 | 2008-06-12 | Daikin Industries, Ltd. | Sleep judging device |
| JP2017500998A (en) * | 2013-12-20 | 2017-01-12 | ソノメディカル ピーティーワイ リミテッド | System and method for monitoring physiological activity of a subject |
-
1991
- 1991-02-27 JP JP3032674A patent/JP2768025B2/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06225864A (en) * | 1993-02-04 | 1994-08-16 | Matsushita Electric Ind Co Ltd | Sleeping device |
| JPH06237921A (en) * | 1993-02-18 | 1994-08-30 | Matsushita Electric Ind Co Ltd | Sleeping device |
| JPH0779933A (en) * | 1993-09-14 | 1995-03-28 | Matsushita Electric Ind Co Ltd | System for assessment of resting condition in bed |
| JPH08103430A (en) * | 1994-10-06 | 1996-04-23 | Matsushita Electric Ind Co Ltd | Human body detector |
| JP2005237684A (en) * | 2004-02-26 | 2005-09-08 | France Bed Co Ltd | Bed apparatus |
| JP2006026099A (en) * | 2004-07-15 | 2006-02-02 | Sanyo Electric Co Ltd | Sleeper stimulating apparatus |
| JP2008113797A (en) * | 2006-11-02 | 2008-05-22 | Aisin Seiki Co Ltd | Biological signal detecting system |
| WO2008069017A1 (en) * | 2006-12-08 | 2008-06-12 | Daikin Industries, Ltd. | Sleep judging device |
| CN101528127A (en) * | 2006-12-08 | 2009-09-09 | 大金工业株式会社 | Sleep judging device |
| US8114033B2 (en) | 2006-12-08 | 2012-02-14 | Daikin Industries, Ltd. | Sleep determination apparatus |
| JP2017500998A (en) * | 2013-12-20 | 2017-01-12 | ソノメディカル ピーティーワイ リミテッド | System and method for monitoring physiological activity of a subject |
| US10729333B2 (en) | 2013-12-20 | 2020-08-04 | Sonomedical Pty Ltd | System and method for monitoring physiological activity of a subject |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2768025B2 (en) | 1998-06-25 |
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