JP3125293B2 - Biological monitoring device - Google Patents
Biological monitoring deviceInfo
- Publication number
- JP3125293B2 JP3125293B2 JP02120232A JP12023290A JP3125293B2 JP 3125293 B2 JP3125293 B2 JP 3125293B2 JP 02120232 A JP02120232 A JP 02120232A JP 12023290 A JP12023290 A JP 12023290A JP 3125293 B2 JP3125293 B2 JP 3125293B2
- Authority
- JP
- Japan
- Prior art keywords
- output signal
- circuit
- piezoelectric element
- bedding
- counting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Description
【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。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a living body monitoring device for monitoring a body movement such as a heart rate, a respiratory rate, and 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状のア
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、マットレス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、上記構成によりベッド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、寝具またはマットレス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。2. Description of the Related Art A conventional biological monitor of this type will be described with reference to FIGS. 3 and 4. FIG. FIG. 4 is a sectional view taken along the line AA of FIG. As shown in the figure, this biological monitoring device has two metal plates or metal mesh antenna members 2a, 2b attached to both sides of an insulating plate 1, and insulating members 3a, 3b having different insulating constants are provided on the upper portions thereof. A recording mat 5 formed by stacking the formed active layers 3 and further covering them with a flexible shield 4 is laid under the mattress 6, and the antenna members 2a and 2b are connected to the recording device via the amplifier 7. 8 was connected. (See, for example,
According to the above configuration, the potential difference caused by the change in the electrostatic charge generated in the clothes, bedding or the mattress 6 due to the body motion of the person sleeping on the bed 14 such as heartbeat, breathing and turning over is 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、心拍数や呼吸
数、寝返り等の体動回数を誤動作なく計数する具体的な
構成が開示されておらず、現実にそれらの値を測定する
ことが困難であった。However, in the above configuration, a specific configuration for counting the number of body movements such as a heart rate, a respiration rate, and turning over without malfunction is not disclosed, and those values are actually measured. It was difficult to do.
本発明はかかる従来の課題を解消するもので、心拍数
や呼吸数、寝返り等の体動回数を誤動作なく計数する実
用的な生体モニタ装置を提供することを目的とする。An object of the present invention is to solve such a conventional problem, and an object of the present invention is to provide a practical living body monitoring device that counts the number of body movements such as a heart rate, a respiratory rate, and turning over without malfunction.
課題を解決するための手段 上記課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
うち心拍活動、呼吸活動および寝返り等の体動の少なく
とも１つに対応した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が同じくそれぞ
れの計測要素に対応した上限値下限値の範囲内に入りか
つ各計測要素に対応した閾値を超える回数を計数する計
数回路とからなるものである。Means for Solving the Problems In order to solve the above problems, a living body monitoring device of the present invention comprises a flexible piezoelectric element that can be disposed on bedding such as a futon, a sheet, a mattress, and the like, and an output signal of the piezoelectric element. A filter circuit that passes only a predetermined frequency component corresponding to at least one of body movements such as heartbeat activity, respiratory activity, and turning over, an amplification circuit that amplifies an output signal of the filter circuit, and an output of the amplification circuit. And a counting circuit for counting the number of times that the signal falls within the range of the upper limit value and the lower limit value corresponding to each measurement element and exceeds the threshold value corresponding to each measurement element.
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
心拍活動や呼吸活動、寝返り等による体動により変形を
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心拍活動、呼吸活動
および寝返り等の体動の少なくとも１つに対応した所定
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、増幅回路の出力信号が同
じくそれぞれの計測要素に対応した上限値下限値の範囲
に入りかつ各計測要素に対応した閾値を超える回数を計
数する。これにより、圧電素子からの電圧出力のうち、
心拍活動によるもの、呼吸活動によるもの、体動による
ものを取り出すことができ、的確に求める要素の計測を
行うことができる。Operation The present invention operates as follows by the above configuration.
That is, when the piezoelectric element disposed on the bedding is deformed by the body movement of the living body on the bedding due to heartbeat activity, respiratory activity, turning over, etc., a voltage is generated from the piezoelectric element due to the piezoelectric effect. Only a predetermined frequency component corresponding to at least one of body motions such as heartbeat activity, respiratory activity, and turning over of the generated voltage output is passed by the filter circuit,
After being amplified by the amplifier circuit, the number of times that the output signal of the amplifier circuit falls within the range of the upper limit value and the lower limit value corresponding to each measurement element and exceeds the threshold value corresponding to each measurement element is counted. Thereby, of the voltage output from the piezoelectric element,
Heartbeat activity, respiration activity, and body motion can be taken out, and the required element can be accurately measured.
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。第１図は同実施例をベッド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）等の高分子材料を薄膜状にし両面
に可撓性の電極膜を付着させたものをテープ状に成形し
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はマットレス６の表面に固定され
る。10は圧電素子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、11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11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。Embodiments Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view when the embodiment is installed on a bed 14, and FIG. 2 is a block diagram of the embodiment. In the figure, reference numeral 9 denotes a flexible piezoelectric element, in which a polymer material such as polyvinylidene fluoride (PVDF) is formed into a thin film and a flexible electrode film is adhered on both sides to form a tape. It is molded and can be mass-produced at relatively low manufacturing costs. The piezoelectric element 9 is fixed on the surface of the mattress 6. Reference numeral 10 denotes a filter circuit that passes only a predetermined frequency component in the output signal of the piezoelectric element, 11 denotes an amplification circuit that amplifies the output signal of the filter circuit 10, and 12 denotes a counting circuit that counts the output signal of the amplification circuit 11, and a count value. Is displayed.
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り変
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心拍活動、呼吸
活動および寝返り等の体動の少なくとも１つに対応した
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により増幅される。さらに、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上
限値下限値の範囲に入りかつあらかじめ定められた閾値
以上になる回数を計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の回数が計数され、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 movement such as heartbeat, respiration, and turning over of the living body on the bedding, a voltage is generated from the piezoelectric element 9 by a piezoelectric effect. Then, of the generated voltage output, only a predetermined frequency component corresponding to at least one of body movements such as heartbeat activity, respiratory activity, and turning over is passed by the filter circuit 10 and amplified by the amplifier circuit 11. Furthermore, a counting circuit
By counting the number of times that the output signal of the amplifier circuit falls within the range of the predetermined upper limit value and lower limit value and becomes equal to or greater than the predetermined threshold value according to 12, the number of body movements such as heart rate, respiratory rate and turning over is counted. Then, the count value is 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、呼吸数を計数する場合は約0.1〜
約0.5Hz、寝返り等の体動を計数する場合は約１〜約10H
zとする。Here, when counting the heart rate, the band setting of the filter circuit is about 0.7 to about 2 Hz.When counting the respiratory rate, about 0.1 to about 2 Hz.
About 0.5Hz, about 1 to about 10H when counting body movements such as turning over
z.
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
ある場合に心拍数に対応する所定の閾値を超えた回数の
計数を行っている。呼吸数および体動回数を計数する場
合も同様な手順で行う。If the body movement occurs when counting the heart rate, the output signal level is higher in the body movement than in the heart beat, so the output signal may be disturbed and lead to malfunction.However, when counting the heart rate, the upper limit value is used. A lower limit is set, and when the output signal is within the range, the number of times exceeding a predetermined threshold value corresponding to the heart rate is counted. The same procedure is used to count the number of breaths and the number of body movements.
上記作用により、計数回路では増幅回路の出力信号が
予め定められたある範囲内にある場合に計数を行うの
で、例えば心拍数を検出する場合、寝返り等の体動が発
生していない身体が静止状態である時にのみ心拍数を検
出するため誤動作が生じるといったことがない。By the above operation, the counting circuit performs counting when the output signal of the amplifying circuit is within a predetermined range.For example, when detecting a heart rate, the body in which no body movement such as rolling over has occurred is stopped. Since the heart rate is detected only during the state, no malfunction occurs.
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。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、用事突然死
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ェック等が可能となる。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
チェックすることも可能となる。As described above, according to the living body monitoring device described above, it is possible to detect body motion such as heartbeat, respiration, and turning over at a low cost and in a practical form, so that diagnosis at a medical facility such as a hospital can be performed. It can be used for treatment, prevention, emergency treatment, etc., and can also be useful for home medical care and health care at home, workplace, etc., which will increasingly need in the future. In particular, a great contribution can be expected for early detection and treatment of sudden illness during sleep when the user becomes unconscious, for example, heart failure and sleep apnea, suffocation of infants, sudden errand death syndrome, and the like. In addition, it is said that body movements during sleep have a correlation with the sleeping level of a sleeping person, and sleep diagnosis and health check can be performed by counting the body movements during sleep. Further, it is said that the number of body movements of an infant is correlated with the degree of growth, and the number of body movements can be counted to check the degree of growth of the infant.
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、それ
ぞれの計測要素の対応した特有の周波数、波形の範囲、
及び閾値により測定対象の出力値を選定するため、構成
が簡便な測定器でも誤動作なく確実に正確な測定を行う
ことができる。Effects of the Invention As described above, according to the biological monitoring device of the present invention, a specific frequency corresponding to each measurement element, a range of a waveform,
Since the output value to be measured is selected based on the threshold value and the threshold value, accurate measurement can be reliably performed without malfunction even with a measuring device having a simple configuration.
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、 13……表示部、14……ヘッド。1 is a perspective view of a living body monitoring device according to an embodiment of the present invention, FIG. 2 is a block diagram of the same, FIG. 3 is a cross-sectional view of a conventional living body monitoring device, and FIG. It is sectional drawing. 9 piezoelectric element, 10 filter circuit, 11 amplifier circuit, 12 counting circuit, 13 display unit, 14 head.
Claims (3)
設可能な可撓性を有する圧電素子と、前記圧電素子の出
力信号のうち心拍活動に対応した所定の周波数成分のみ
を通過させるフィルタ回路と、前記フィルタ回路を通過
した出力信号を増幅する増幅回路と、前記増幅回路の出
力信号が予め定められた心拍活動に対応した上限値と下
限値の範囲内に入りかつ予め定められた心拍数計数用の
閾値以上になる回数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 disposed on bedding such as a bedding, a sheet, a mattress, and the like, and a filter circuit that passes only a predetermined frequency component corresponding to a heartbeat activity in an output signal of the piezoelectric element. An amplifier circuit for amplifying an output signal passed through the filter circuit, and an output signal of the amplifier circuit falling within a range of an upper limit value and a lower limit value corresponding to a predetermined heart rate activity and a predetermined heart rate A biological monitoring device comprising: a counting circuit that counts the number of times equal to or greater than a counting threshold.
設可能な可撓性を有する圧電素子と、前記圧電素子の出
力信号のうち呼吸活動に対応した所定の周波数成分のみ
を通過させるフィルタ回路と、前記フィルタ回路を通過
した出力信号を増幅する増幅回路と、前記増幅回路の出
力信号が予め定められた呼吸活動用の上限値と下限値の
範囲内に入りかつ予め定められた呼吸数計数用の閾値以
上になる回数を計数する計数回路とからなる生体モニタ
装置。2. A flexible piezoelectric element which can be disposed on bedding such as a bedding, a sheet or a mattress, and a filter circuit for passing only a predetermined frequency component corresponding to respiratory activity in an output signal of the piezoelectric element. An amplification circuit for amplifying an output signal passed through the filter circuit; and an output signal of the amplification circuit falling within a range of a predetermined upper limit and a lower limit for respiratory activity and a predetermined respiration rate count. And a counting circuit for counting the number of times that the number of times becomes equal to or more than a threshold value for use in a living body.
設可能な可撓性を有する圧電素子と、前記圧電素子の出
力信号のうち寝返り等の体動に対応した所定の周波数成
分のみを通過させるフィルタ回路と、前記フィルタ回路
を通過した出力信号を増幅する増幅回路と、前記増幅回
路の出力信号が予め定められた寝返り等の体動に対応し
た上限値と下限値の範囲内に入りかつ予め定められた寝
返り等の体動回数計数用の閾値以上になる回数を計数す
る計数回路とからなる生体モニタ装置。3. A piezoelectric element having flexibility that can be disposed on bedding such as a bedding, a sheet, a mattress, and the like, and only a predetermined frequency component corresponding to a body movement such as rolling over among output signals of the piezoelectric element is passed. A filter circuit, an amplifier circuit for amplifying an output signal passing through the filter circuit, and an output signal of the amplifier circuit falling within a range of an upper limit value and a lower limit value corresponding to a predetermined body movement such as turning over and A biological monitoring device comprising: a counting circuit that counts the number of times that the number of times of body movement such as turning over becomes a threshold value or more.
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 JPH0415038A (en) | 1992-01-20 |
| JP3125293B2 true 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) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2770694B2 (en) * | 1993-01-13 | 1998-07-02 | 松下電器産業株式会社 | Biological information processing device |
| JPH06269427A (en) * | 1993-03-18 | 1994-09-27 | Matsushita Electric Ind Co Ltd | Sleeping device |
| JP3231282B2 (en) * | 1997-09-17 | 2001-11-19 | 松下電器産業株式会社 | Floor status detection system |
| AU2001290292A1 (en) * | 2000-10-31 | 2002-05-15 | Takeshi Sahashi | Body movement analysis system and body movement analysis method |
| US20020165585A1 (en) | 2001-05-01 | 2002-11-07 | Dupelle Michael R. | Pulse sensors |
| WO2004043249A1 (en) * | 2002-11-14 | 2004-05-27 | Advanced Medical Inc. | Organism data sensing device |
| US20040215244A1 (en) | 2003-04-23 | 2004-10-28 | Marcovecchio Alan F. | Processing pulse signal in conjunction with ECG signal to detect pulse in external defibrillation |
| JP5593746B2 (en) * | 2010-03-11 | 2014-09-24 | アイシン精機株式会社 | Pressure ulcer 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 |
-
1990
- 1990-05-10 JP JP02120232A patent/JP3125293B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0415038A (en) | 1992-01-20 |
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