JPH0415038A - Living body monitoring device - Google Patents

Living body monitoring device

Info

Publication number
JPH0415038A
JPH0415038A JP2120232A JP12023290A JPH0415038A JP H0415038 A JPH0415038 A JP H0415038A JP 2120232 A JP2120232 A JP 2120232A JP 12023290 A JP12023290 A JP 12023290A JP H0415038 A JPH0415038 A JP H0415038A
Authority
JP
Japan
Prior art keywords
piezoelectric element
counting
bed
circuit
monitoring device
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
JP2120232A
Other languages
Japanese (ja)
Other versions
JP3125293B2 (en
Inventor
Hiroyuki Ogino
弘之 荻野
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 Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP02120232A priority Critical patent/JP3125293B2/en
Publication of JPH0415038A publication Critical patent/JPH0415038A/en
Application granted granted Critical
Publication of JP3125293B2 publication Critical patent/JP3125293B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

PURPOSE:To monitor the body movement such as heart beat, aspiration and turning-over in bed with low cost and without deteriorating the humidity transmissivity and hygroscopicity of the bedclothes by allowing the title living body monitoring device to consist from a flexible piezoelectric element, filter circuit for allowing only the component having a prescribed frequency, amplifying circuit, and a counting circuit. CONSTITUTION:A flexible piezoelectric element 9 is formed by forming a high polymeric piezoelectric material into a thin film form and attaching each flexible electrode film on both the surfaces and shaping this thin film into a tape form, thus the manufacturing cost can be cut, and mass production is permitted, and this film body is fixed on the surface of a mattress 6. When the piezoelectric element 9 is deformed by the body movement such as heart beat, aspiration and turning-over in bed, a voltage is generated by the piezoelectric effect by the piezoelectric element 9. Only the component having the prescribed frequency among the generated voltage outputs is allowed to pass through a filter circuit 10, and after the amplification by an amplifying circuit 11, the body movement such as the number of heart beat, number of aspiration, and the turning-over in bed is counted by counting the number of times in which the output signal of the amplifying circuit becomes over a previously determined threshold value by a counting circuit 12, and the counting value is displayed on a surface part 13.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は寝床上の生体の心拍数、呼吸数および寝返り等
の体動をモニタする生体モニタ装置に関するものである
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a living body monitoring device that monitors the heart rate, breathing rate, and body movements such as turning over of a living body on a bed.

従来の技術 従来のこの種の生体モニタ装置を第3図および第4図に
基づいて説明する。なお、第4図は第3図のAA線断面
図を表わしている。この生体モニタ装置は図に示すよう
に、絶縁板1の両面に2枚の金属板または金属網試のア
ンテナ部材2a、2bを取り付けて、その上部に互いに
異なる絶縁定数を有する絶縁材3a、3bで形成した活
性層3を重ねて、さらにこれらを可撓性のシールド4で
カバーすることにより形成した記録マット5を、マツト
レス6の下に敷き、アンテナ部材2a、2bを増幅器7
を介して記録装置8に接続するものであった。(例えば
、特開昭55−160539号公報)そして、上記構成
により、ベツド14上に寝ている人の心拍、呼吸および
寝返り等の体動によって衣服、寝具またはマツトレス6
に生じた静電荷の変 化による電位差を増幅し記録していた。
BACKGROUND OF THE INVENTION A conventional biological monitoring device of this type will be explained with reference to FIGS. 3 and 4. Note that FIG. 4 shows a cross-sectional view taken along line AA in FIG. 3. As shown in the figure, this biological monitoring device has two antenna members 2a and 2b made of metal plates or metal mesh attached to both sides of an insulating plate 1, and insulating materials 3a and 3b having different insulation constants on the top of the antenna members 2a and 2b. A recording mat 5 formed by overlapping the active layers 3 formed in the above and further covering them with a flexible shield 4 is placed under the pine tress 6, and the antenna members 2a and 2b are connected to the amplifier 7.
It was connected to the recording device 8 via. (For example, Japanese Unexamined Patent Publication No. 55-160539) With the above structure, clothing, bedding, or a mattress 6 can be moved by the heartbeat, breathing, and body movements such as turning over of the person sleeping on the bed 14.
The potential difference caused by the change in electrostatic charge that occurred was amplified and recorded.

発明が解決しようとする課題 しかしながら上記のような構成では、記録マット5の構
成が上記のように複雑な上、面積もマツトレスと同じく
らい大きいので、製造上コストが高く実用的でない上、
記録マット5自体に透湿性や吸湿性がないため継続して
使用するとマツトレス6等に湿分がたまり不快になると
いった課題を有していた。
Problems to be Solved by the Invention However, with the above structure, the structure of the recording mat 5 is complicated as described above, and the area is as large as that of a pine tress, so the manufacturing cost is high and it is not practical.
Since the recording mat 5 itself does not have moisture permeability or absorbency, there is a problem in that if it is used continuously, moisture accumulates in the pine tress 6 and the like, making it uncomfortable.

本発明はかかる従来の8題を解消するもので、安いコス
トでしかも寝具のもつ透湿性や吸湿性を損わずに心拍、
呼吸および寝返り等の体動をモニタする実用的な生体モ
ニタ装置を提供することを目的とする。
The present invention solves these eight problems of the conventional technology.It is possible to reduce heartbeat and moisture absorption at low cost and without impairing the moisture permeability and moisture absorption properties of bedding.
It is an object of the present invention to provide a practical biological monitoring device that monitors body movements such as breathing and turning over in bed.

課題を解決するための手段 」1記B題を解決するために本発明の生体モニタ装置は
、ふとん、シーツ、マツトレス等の寝具に配設可能な可
撓性を有する圧電素子と、前記圧電素子の出力信号のう
ち所定の周波数成分のみを通過させるフィルタ回路と、
前記フィルタ回路の出力信号を増幅する増幅回路と、前
記増幅回路の出力信号を計数する計数回路とからなる。
Means for Solving the Problems In order to solve Problem 1 B, the biological monitoring device of the present invention includes a piezoelectric element having flexibility that can be disposed on bedding such as a futon, a sheet, and a mattress, and the piezoelectric element. a filter circuit that passes only a predetermined frequency component of the output signal;
It consists of an amplifier circuit that amplifies the output signal of the filter circuit, and a counting circuit that counts the output signal of the amplifier circuit.

作用 本発明は上記の構成によって以下のように作用する。す
なわち、寝具に配設された圧電素子が寝具上の生体の心
拍、呼吸および寝返り等の体動による変形を受けると、
圧電素子から圧電効果による電圧が発生する。そして発
生した電圧出力のうち所定の周波数成分のみがフィルタ
回路により通過させられ、増幅回路により増幅された後
、計数回路により心拍数、呼吸数および寝返り等の体動
が計数される。
Operation The present invention operates as follows with the above configuration. In other words, when a piezoelectric element disposed on the bedding is deformed by the heartbeat, breathing, and body movements of the living body on the bedding, such as turning over in bed,
A voltage is generated from the piezoelectric element due to the piezoelectric effect. Then, only a predetermined frequency component of the generated voltage output is passed through a filter circuit, amplified by an amplifier circuit, and then heart rate, breathing rate, and body movements such as turning over in bed are counted by a counting circuit.

実施例 以下、本発明の実施例を添付図面に基づいて説明する。Example Embodiments of the present invention will be described below with reference to the accompanying drawings.

第1図は同実施例をベツド14に設置した場合の斜視図
、第2図は同実施例のブロック図である。同図において
、9は可撓性のある圧電素子で、ここでは、ポリフッ化
ビニリデン(PVDF)等の高分子圧電材料を薄膜試に
し両面に可撓性の電極膜を付着させたものをテープ状に
成型したもので、製造コストが比較的安く大量に生産で
きるものである。圧電素子9はマツトレス6の表面に固
定される。10は圧電素子9の出力信号で所定の周波数
成分のみを通過させるフィルタ回路]1はフィルタ回路
10の出力信号を増幅する増幅回路、12は増幅回路1
1の出力信号を計数する計数回路で、計数値を表示する
表示部13を有している。
FIG. 1 is a perspective view of the same embodiment installed on a bed 14, and FIG. 2 is a block diagram of the same embodiment. In the same figure, numeral 9 is a flexible piezoelectric element, and here it is made of a thin film made of a polymeric piezoelectric material such as polyvinylidene fluoride (PVDF) and has flexible electrode films attached to both sides in the form of a tape. The manufacturing cost is relatively low and it can be produced in large quantities. The piezoelectric element 9 is fixed to the surface of the pinerest 6. 10 is a filter circuit that passes only a predetermined frequency component of the output signal of the piezoelectric element 9; 1 is an amplifier circuit that amplifies the output signal of the filter circuit 10; 12 is an amplifier circuit 1;
It is a counting circuit that counts one output signal, and has a display section 13 that displays the counted value.

上記構成において、寝具に配設された圧電素子9が寝具
上の生体の心拍、呼吸および寝返り等の体動による変形
を受けると、圧電素子9から圧電効果による電圧が発生
する。そして発生した電圧出力のうち所定の周波数成分
のみがフィルタ回路10により通過させられ、増幅回路
11により増幅された後、計数回路12により増幅回路
の出力信号があらかじめ定められた闇値以上になる回数
を割数することによって心拍数、呼吸数および寝返り等
の体動が計数され、計数値が表示部13に表示される。
In the above configuration, when the piezoelectric element 9 disposed on the bedding is deformed by body movements such as heartbeat, breathing, and turning over of the living body on the bedding, a voltage is generated from the piezoelectric element 9 due to the piezoelectric effect. Then, only a predetermined frequency component of the generated voltage output is passed through the filter circuit 10, amplified by the amplifier circuit 11, and then determined by the counting circuit 12 the number of times the output signal of the amplifier circuit exceeds a predetermined dark value. The heart rate, respiratory rate, and body movements such as turning over are counted by dividing , and the counted values are displayed on the display unit 13 .

ここで、心拍数を計数する場合はフィルタ回路の帯域設
定を約0.7〜約2Hz、Ill吸数な計数する場合は
約0.1〜約Q、5Hz、寝返り等の体動を計数する場
合は約1〜約101]Zとする。帯域設定が心拍の場合
と体動の場合で重なり合うが、心拍より体動の方が出力
信号レベルが大きいことから、体動を計数する場合は心
拍数を計数する場合よりも閾値を大きくとっである。ま
た、心拍数を計数する場合に体動が生じると心拍より体
動の方が出力信号レベルが大きいので、出力信号が乱れ
て誤動作につながる可能性があるが、心拍数を計数する
場合の闇値に上限値と下限値を設けて、その範囲内に出
力信号がある場合に心拍数の計数を行なっている。
Here, when counting heart rate, set the band of the filter circuit to about 0.7 to about 2 Hz, and when counting Ill intakes, set the band to about 0.1 to about Q, 5 Hz, and count body movements such as turning over in bed. In this case, it is about 1 to about 101]Z. The band settings for heartbeat and body movement overlap, but since the output signal level is higher for body movement than for heartbeat, the threshold should be set larger when counting body movement than when counting heart rate. be. In addition, when counting heart rate, if body movement occurs, the output signal level is higher for body movement than heartbeat, so the output signal may be disrupted and lead to malfunction, but there is a dark side when counting heart rate. An upper limit value and a lower limit value are set for the value, and the heart rate is counted when the output signal is within the range.

上記作用により、心拍、呼吸および寝返り等の体動を検
出する圧電素子9が従来の記録マット5のような複雑な
構成ではなく形状も小さいので、従来に比べて安いコス
トで製造できる上、どのようなベツドにでも簡単に装着
して心拍数、呼吸数および寝返り等の体動がモニタでき
るといった効果がある。また、圧電素子9を寝具に配設
しても寝具のもつ透湿性や吸湿性を損わないので、従来
のように継続して使用するとマツトレスに湿分がたまり
不快になるといったことがない。
Due to the above action, the piezoelectric element 9 that detects body movements such as heartbeat, breathing, and turning over in bed does not have a complicated structure like the conventional recording mat 5 and has a small shape, so it can be manufactured at a lower cost than the conventional one, and It has the advantage of being able to be easily attached to any type of bed to monitor heart rate, respiratory rate, and body movements such as turning over in bed. Further, even if the piezoelectric element 9 is disposed on the bedclothes, the moisture permeability and moisture absorption properties of the bedclothes are not impaired, so that the mattress does not accumulate moisture and become uncomfortable when used continuously as in the past.

以上のように、上記の生体モニタ装置によれば安いコス
トでかつ実用的なかたちで心拍、呼吸および寝返り等の
体動を検出することが可能となるので、病院等の医療施
設での診断、治療、予防、救急処置等に活用できるほか
、今後ますます必要性が高まるであろう在宅医療および
家庭、職場等での健康管理等に対しても役立つことがで
きる。
As described above, the biological monitoring device described above can detect heartbeat, breathing, and body movements such as turning over in bed at a low cost and in a practical manner, so it can be used for diagnosis in medical facilities such as hospitals, In addition to being useful for treatment, prevention, and emergency treatment, it can also be useful for home medical care and health management at home, work, etc., which will become increasingly necessary in the future.

特に、使用者が無意識となる睡眠時の急病、例えば心不
全や睡眠時無呼吸症、乳児の窒息、幼児突然死症候群等
の早期発見および処置等に関しては大きな貢献が期待で
きる。また、睡眠時の体動は就寝者の安眠度と相関があ
るといわれており、睡眠時の体動を計数することにより
睡眠診断や健康チエツク等が可能となる。さらに、乳幼
児の体動回数は発育度合と相関があるといわれており、
体動回数を計数することで乳幼児の発育度合をチエツク
することも可能となる。
In particular, it is expected to make a significant contribution to the early detection and treatment of sudden sleep-related illnesses in which the user is unconscious, such as heart failure, sleep apnea, infant suffocation, and sudden infant death syndrome. Furthermore, body movements during sleep are said to have a correlation with the sleeper's level of sleep, and by counting body movements during sleep, sleep diagnosis, health checks, etc. can be performed. Furthermore, it is said that the number of body movements of infants and young children is correlated with the degree of growth.
By counting the number of body movements, it is also possible to check the degree of growth of infants.

発明の効果 以上のように本発明の生体モニタ装置によれば次の効果
が得られる。
Effects of the Invention As described above, the biological monitoring device of the present invention provides the following effects.

心拍、呼吸および寝返り等の体動を検出する圧電素子が
従来のような複雑な構成でなく形状も小さいので、従来
に比べて安いコストで製造できる上、どのようなベツド
にでも簡単に装着して体動が検出できる。また、寝具の
もつ透湿性や吸湿性を損わないようになっているので、
従来のように継続して使用するとマツトレスに湿分がた
まり不快になるといったことがない。
The piezoelectric elements that detect body movements such as heartbeat, breathing, and turning over in bed do not have the complicated structure of conventional devices and are small in size, so they can be manufactured at a lower cost than conventional devices and can be easily attached to any bed. body movements can be detected. In addition, since it does not impair the moisture permeability and moisture absorption properties of bedding,
If you use it continuously like in the past, there is no chance of moisture accumulating in the pine tress and making it uncomfortable.

また、フィルタ回路の帯域設定を上記のように設定しで
あるので、商用電源ノイズ(501−(z、60Hz)
の混入の心配はない。
Also, since the band setting of the filter circuit is set as above, commercial power supply noise (501-(z, 60Hz)
There is no need to worry about contamination.

このように、安いコストでかつ実用的なかたちで心拍、
呼吸および寝返り等の体動を検出することが可能となる
ので、病院等の医療施設での診断、治療、予防、救急処
置等に活用できるほか、今後ますます必要性が高まるで
あろう在宅医療および家庭、職場等での健康管理等に対
しても役立つことができる。
In this way, heart rate can be detected at low cost and in a practical manner.
Since it is possible to detect body movements such as breathing and turning over in bed, it can be used for diagnosis, treatment, prevention, emergency treatment, etc. at medical facilities such as hospitals, as well as for home medical care, which will become increasingly necessary in the future. It can also be useful for health management at home, work, etc.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の実施例における生体モニタ装置の斜視
図、第2図は同装置のブロック図、第3図は従来の生体
モニタ装置の断面図、第4図は第3図のAA線断面図で
ある。 9・・・圧電素子、10・・・フィルタ回路、11・・
・増幅回路、12・・・計数回路、]3・・・表示部、
 14・・・ベツド。 代理人の氏名  弁理士 粟野重孝 はか18第 1 
図 /4 Δ マツトレス 13−展示部 宵 2I21
Fig. 1 is a perspective view of a biological monitoring device according to an embodiment of the present invention, Fig. 2 is a block diagram of the same device, Fig. 3 is a sectional view of a conventional biological monitoring device, and Fig. 4 is taken along line AA in Fig. 3. FIG. 9... Piezoelectric element, 10... Filter circuit, 11...
・Amplification circuit, 12... Counting circuit,] 3... Display section,
14... Betsudo. Name of agent: Patent attorney Shigetaka Awano Haka18 No. 1
Figure/4 Δ Pine Torres 13-Exhibition Department Yoi 2I21

Claims (4)

【特許請求の範囲】[Claims] (1)ふとん、シーツ、マットレス等の寝具に配設可能
な可撓性を有する圧電素子と、前記圧電素子の出力信号
のうち所定の周波数成分のみを通過させるフィルタ回路
と、前記フィルタ回路の出力信号を増幅する増幅回路と
、前記増幅回路の出力信号を計数する計数回路とからな
る生体モニタ装置。
(1) A flexible piezoelectric element that can be placed in bedding such as futons, sheets, and mattresses; a filter circuit that passes only a predetermined frequency component of the output signal of the piezoelectric element; and an output of the filter circuit. A biological monitoring device comprising an amplifier circuit that amplifies a signal and a counting circuit that counts the output signal of the amplifier circuit.
(2)フィルタ回路は、圧電素子の出力信号のうち心拍
活動の周波数成分のみを通過させる請求項1記載の生体
モニタ装置。
(2) The biological monitoring device according to claim 1, wherein the filter circuit passes only the frequency component of heartbeat activity in the output signal of the piezoelectric element.
(3)フィルタ回路は、圧電素子の出力信号のうち呼吸
活動の周波数成分のみを通過させる請求項1記載の生体
モニタ装置。
(3) The biological monitoring device according to claim 1, wherein the filter circuit passes only the frequency component of respiratory activity in the output signal of the piezoelectric element.
(4)フィルタ回路は、圧電素子の出力信号のうち寝返
り等の体動の周波数成分のみを通過させる請求項1記載
の生体モニタ装置。
(4) The biological monitoring device according to claim 1, wherein the filter circuit passes only a frequency component of body movement such as turning over in the output signal of the piezoelectric element.
JP02120232A 1990-05-10 1990-05-10 Biological monitoring device Expired - Fee Related JP3125293B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP02120232A JP3125293B2 (en) 1990-05-10 1990-05-10 Biological monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP02120232A JP3125293B2 (en) 1990-05-10 1990-05-10 Biological monitoring device

Publications (2)

Publication Number Publication Date
JPH0415038A true JPH0415038A (en) 1992-01-20
JP3125293B2 JP3125293B2 (en) 2001-01-15

Family

ID=14781127

Family Applications (1)

Application Number Title Priority Date Filing Date
JP02120232A Expired - Fee Related JP3125293B2 (en) 1990-05-10 1990-05-10 Biological monitoring device

Country Status (1)

Country Link
JP (1) JP3125293B2 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06205762A (en) * 1993-01-13 1994-07-26 Matsushita Electric Ind Co Ltd Living body information processor
JPH06269427A (en) * 1993-03-18 1994-09-27 Matsushita Electric Ind Co Ltd Sleeping device
JPH11151209A (en) * 1997-09-17 1999-06-08 Matsushita Electric Ind Co Ltd System for detecting state of being in bed
WO2002036009A1 (en) * 2000-10-31 2002-05-10 Takeshi Sahashi Body movement analysis system and body movement analysis method
WO2004043249A1 (en) * 2002-11-14 2004-05-27 Advanced Medical Inc. Organism data sensing device
US7488293B2 (en) 2003-04-23 2009-02-10 Zoll Medical Corporation Processing pulse signal in conjunction with accelerometer signal in cardiac resuscitation
US7797043B1 (en) 2001-05-01 2010-09-14 Zoll Medical Corporation Pulse sensors
JP2011183121A (en) * 2010-03-11 2011-09-22 Aisin Seiki Co Ltd Bedsore generation risk presentation device
WO2011162138A1 (en) 2010-06-21 2011-12-29 アイシン精機株式会社 Living organism information detection system
CN110236504A (en) * 2019-07-01 2019-09-17 天津工业大学 A kind of flexibility sensing element and breathing and heartbeat sensor using it
CN110772240A (en) * 2019-11-28 2020-02-11 南京信息工程大学 Intelligent mattress for emergency ambulance and detection method thereof

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06205762A (en) * 1993-01-13 1994-07-26 Matsushita Electric Ind Co Ltd Living body information processor
JPH06269427A (en) * 1993-03-18 1994-09-27 Matsushita Electric Ind Co Ltd Sleeping device
JPH11151209A (en) * 1997-09-17 1999-06-08 Matsushita Electric Ind Co Ltd System for detecting state of being in bed
WO2002036009A1 (en) * 2000-10-31 2002-05-10 Takeshi Sahashi Body movement analysis system and body movement analysis method
US7797043B1 (en) 2001-05-01 2010-09-14 Zoll Medical Corporation Pulse sensors
US8064995B1 (en) 2001-05-01 2011-11-22 Zoll Medical Corporation Pulse sensors
WO2004043249A1 (en) * 2002-11-14 2004-05-27 Advanced Medical Inc. Organism data sensing device
US7488293B2 (en) 2003-04-23 2009-02-10 Zoll Medical Corporation Processing pulse signal in conjunction with accelerometer signal in cardiac resuscitation
USRE44187E1 (en) 2003-04-23 2013-04-30 Zoll Medical Corporation Processing pulse signal in conjunction with accelerometer signal in cardiac resuscitation
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