JP3021886B2 - Constant heart rate monitoring system - Google Patents
Constant heart rate monitoring systemInfo
- Publication number
- JP3021886B2 JP3021886B2 JP3341308A JP34130891A JP3021886B2 JP 3021886 B2 JP3021886 B2 JP 3021886B2 JP 3341308 A JP3341308 A JP 3341308A JP 34130891 A JP34130891 A JP 34130891A JP 3021886 B2 JP3021886 B2 JP 3021886B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- heart rate
- heartbeat
- receiving
- received
- 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
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Description
【0001】[0001]
【産業上の利用分野】この発明は、モニタ対象者の心拍
を常時モニタリングし、心拍に異常があった場合にこれ
を検知してしかるべき報知を行なう常時心拍モニタシス
テムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant heart rate monitoring system which constantly monitors the heart rate of a person to be monitored, and detects abnormalities in the heart rate and informs the user accordingly.
【0002】[0002]
【従来の技術】従来の常時心拍モニタシステムは、完全
な非健康体ではなく、心臓疾患の程度の浅い、常時心拍
数を監視しなければならない人々が常時携帯するもので
あり、心拍を検出してその心拍数に異常が認められた場
合には、ただちに緊急信号を携帯している送信器から例
えば電話器に接続された受信器側に送信し、病院等に設
置されている集中管理システムに通報するようになって
いる。2. Description of the Related Art A conventional continuous heart rate monitoring system is not completely unhealthy, but is always carried by people who have a shallow degree of heart disease and need to constantly monitor their heart rate. If the heart rate is abnormal, the emergency signal is immediately transmitted from the carrying transmitter to the receiver connected to the telephone, for example, and the emergency signal is sent to the centralized management system installed in the hospital. It is to report.
【0003】[0003]
【発明が解決しようとする課題】しかるに上記送信器
は、携帯性の点から大きさが制限されている反面、常時
心拍数異常の判断を行なって必要に応じて緊急信号の送
信を行なう構成となっているので、電力の消費が多く、
電源となる電池の寿命が短いために、頻繁に電池を交換
しなければならないという問題を有していた。Although the transmitter is limited in size in terms of portability, the transmitter always determines an abnormal heart rate and transmits an emergency signal as necessary. Power consumption,
Since the life of the battery serving as the power supply is short, the battery must be frequently replaced.
【0004】この発明は上記のような実情に鑑みてなさ
れたもので、その目的とするところは、モニタ対象者に
常時携帯され、心拍数の異常を判断して緊急信号の送信
を行なう送信器の消費電力を低減してその電源となる電
池の寿命を延ばすことが可能な常時心拍モニタシステム
を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a transmitter which is always carried by a person to be monitored and which determines an abnormal heart rate and transmits an emergency signal. It is an object of the present invention to provide a constant heart rate monitoring system capable of reducing the power consumption of a battery and extending the life of a battery serving as a power source thereof.
【0005】[0005]
【課題を解決するための手段及び作用】すなわちこの発
明は、モニタ対象者の身体に直接取付けられた心拍検出
器から送信されてくる心拍信号を受信する受信部と、こ
の受信部で受信された心拍信号によりモニタ対象者の心
拍異常を判断する異常判断部と、この異常判断部でモニ
タ対象者の心拍異常と判断した際に心拍異常発生時の報
知処理を行なう受信器に対して緊急信号を送信する送信
部とを有する送信部において、上記受信部で受信される
次の心拍信号の受信タイミングを予測演算する演算部を
設け、この演算部で得られた受信タイミングで上記第1
の受信部が心拍信号の受信をしたか否かを判断して、予
測した受信タイミングで心拍信号を所定回数連続して受
信した場合には上記第1の受信部への駆動通電を上記演
算部で得られる次の予測受信タイミングまでの間停止す
る節電モードに移行し、この節電モード中に予測した受
信タイミングで心拍信号を受信しなかった場合にはただ
ちに上記第1の受信部への駆動通電を常時行なう通常モ
ードに移行させるべくモード制御するようにしたもの
で、心拍が安定していると判断される間は節電モードに
自動的に移行し、次の心拍信号が受信されると予測され
るタイミングまでの間は受信部の動作を停止させて無駄
な電力の消費を抑えることができる。That is, the present invention provides a receiving section for receiving a heartbeat signal transmitted from a heartbeat detector directly attached to the body of a person to be monitored, and a receiving section for receiving the heartbeat signal. An emergency signal is sent to an abnormality judging unit that judges an abnormal heartbeat of the monitored person based on the heartbeat signal, and a receiver that performs a notification process when a heartbeat abnormality occurs when the abnormal judgment unit judges that the monitored object person has an abnormal heartbeat. A transmitting unit having a transmitting unit for transmitting the heartbeat signal, the computing unit predicting and calculating the reception timing of the next heartbeat signal received by the receiving unit, and the first timing is calculated based on the reception timing obtained by the computing unit.
It is determined whether or not the receiving unit has received the heartbeat signal, and if the heartbeat signal is continuously received a predetermined number of times at the predicted reception timing, the energization of the drive to the first receiving unit is performed by the arithmetic unit. When the heart rate signal is not received at the reception timing predicted during this power saving mode, the drive power supply to the first receiving unit is immediately performed. The mode is controlled so as to shift to the normal mode in which the heart rate is constantly changed.When the heart rate is determined to be stable, the mode automatically shifts to the power saving mode, and it is predicted that the next heart rate signal will be received. Until a certain timing, the operation of the receiving unit is stopped, so that useless power consumption can be suppressed.
【0006】[0006]
【実施例】以下図面を参照してこの発明の一実施例を説
明する。An embodiment of the present invention will be described below with reference to the drawings.
【0007】図1は本発明の一実施例に係る基本的な外
観構成を示すもので、 1がモニタ対象者の身体で心拍の
検出を確実に行なうことができる部位、例えば左胸下部
に直接取付けられ、検出した心拍信号を電磁誘導(図で
は「EM」と示す)により送信する検出器、 2が同モニ
タ対象者の例えば左手首に装着され、上記検出器1 から
の電磁誘導による心拍信号を受けてその心拍数を表示す
ると共に、該心拍信号のエラー訂正を行なって安定化さ
せた後に心拍の異常判断を行ない、異常があれば異常が
発生したことを示す緊急信号を搬送周波数(図では「R
F」と示す)に重畳して無線送信する送信器、 3は例え
ば電話機4 に接続され、1台、または複数台の送信器2
から送られてくる搬送周波数に重畳された異常発生信号
を受信して医師や看護婦に通電、報知する受信器であ
り、これら検出器1 、送信器2 及び受信器3 より本発明
の一実施例に係る常時心拍モニタシステムが構成され
る。FIG. 1 shows a basic external structure according to an embodiment of the present invention. In FIG. 1, 1 is a portion directly detectable on the body of the monitored person, for example, directly below the left chest. A detector 2 is attached and transmits a detected heartbeat signal by electromagnetic induction (indicated as “EM” in the figure). A detector 2 is attached to, for example, the left wrist of the monitored subject, and a heartbeat signal by electromagnetic induction from the detector 1 is provided. Received, the heart rate is displayed, the heart rate signal is corrected for errors and stabilized, and then the heart rate is judged to be abnormal. If there is an abnormality, an emergency signal indicating that an abnormality has occurred is transmitted to the carrier frequency (FIG. Then, "R
F), which is superimposed on and transmitted by radio, 3 is connected to, for example, a telephone 4 and one or more transmitters 2
This is a receiver that receives an abnormality occurrence signal superimposed on the carrier frequency sent from the device, and energizes and informs doctors and nurses, and implements the present invention by using these detector 1, transmitter 2 and receiver 3. A constant heart rate monitoring system according to the example is configured.
【0008】図2は上記検出器1 と送信器2 のモニタ対
象者5 への装着状態を示すものである。同図に示すよう
に、検出器1 はバンド6 等によりモニタ対象者5 の身体
で心拍の検出を確実に行なうことができる部位である左
胸下部に固定して装着され、その表面に突出した一対の
電極が心臓直上部の皮膚に接触するようになっている。
この検出器1 で検出された心拍は信号化され、電磁誘導
により例えば70〜80cmの有効範囲内で送信されるも
ので、この電磁誘導による信号が同モニタ対象者5 の左
腕手首に装着された腕時計状の送信器2 で受信される。FIG. 2 shows a state in which the detector 1 and the transmitter 2 are mounted on the person 5 to be monitored. As shown in the figure, the detector 1 is fixedly attached to the lower left chest, which is a part where the heartbeat can be reliably detected on the body of the monitoring subject 5 by the band 6 or the like, and protrudes from the surface thereof. A pair of electrodes contact the skin immediately above the heart.
The heartbeat detected by the detector 1 is converted into a signal and transmitted by electromagnetic induction within an effective range of, for example, 70 to 80 cm. The signal by the electromagnetic induction is attached to the left wrist of the subject 5 to be monitored. It is received by the transmitter 2 in the form of a wristwatch.
【0009】送信器2 は、受信した電磁誘導による心拍
信号に対してノイズ除去、補間のエラー訂正を行ない、
その後に心拍数の算出、不整脈等の異常の有無を判断
し、異常があれば、ここでは図示しない受信器3 に対し
て異常が発生したことを示す緊急信号を搬送周波数に重
畳して無線送信する。次いで上記検出器1 、送信器2 の
具体的な回路構成について説明する。The transmitter 2 performs noise removal and interpolation error correction on the received heartbeat signal due to electromagnetic induction,
Thereafter, the heart rate is calculated, and the presence or absence of an abnormality such as arrhythmia is determined.If there is an abnormality, an emergency signal indicating that the abnormality has occurred to a receiver 3 not shown is superimposed on the carrier frequency and wirelessly transmitted. I do. Next, specific circuit configurations of the detector 1 and the transmitter 2 will be described.
【0010】図3は上記検出器1 内に設けられる電子回
路の構成を示す。図中、11は心拍検出部であり、モニタ
対象者5 の該当部位に当接された上記一対の電極から得
られる人体の筋電位差を増幅し、フィルタリングして心
拍信号aを生成し、EM送信制御部12に出力する。FIG. 3 shows a configuration of an electronic circuit provided in the detector 1. In the figure, reference numeral 11 denotes a heartbeat detection unit, which amplifies and filters a myoelectric potential difference of a human body obtained from the pair of electrodes abutted on a corresponding part of the monitored subject 5, generates a heartbeat signal a, and transmits the EM signal. Output to the control unit 12.
【0011】このEM送信制御部12は、内部に発振回路
12aを備え、また外付けでコンデンサ13と抵抗14とが直
列接続されるもので、心拍検出部11からの心拍信号aに
対してノイズ除去、補間のエラー訂正を行ない、心拍信
号bとして抵抗15を介してNPN型のトランジスタ16の
ベース電極に送出する。The EM transmission control unit 12 has an oscillation circuit inside.
12a, a capacitor 13 and a resistor 14 are connected in series externally, and the noise removal and interpolation error correction are performed on the heartbeat signal a from the heartbeat detection unit 11, and the resistance 15 is used as the heartbeat signal b. To the base electrode of the NPN transistor 16
【0012】このトランジスタ16のコレクタ電極とエミ
ッタ電極間にはコンデンサ17が接続され、該コレクタ電
極が電磁誘導コイル18の一端に接続されると共に、該エ
ミッタ電極がEM送信制御部12と接続される。電磁誘導
コイル18の他端とコンデンサ20の一端に抵抗19を介して
電圧VCCが印加され、コンデンサ20の他端が上記トラン
ジスタ16のエミッタ電極に接続される。A capacitor 17 is connected between the collector electrode and the emitter electrode of the transistor 16, the collector electrode is connected to one end of an electromagnetic induction coil 18, and the emitter electrode is connected to the EM transmission controller 12. . The voltage VCC is applied to the other end of the electromagnetic induction coil 18 and one end of the capacitor 20 via the resistor 19, and the other end of the capacitor 20 is connected to the emitter electrode of the transistor 16.
【0013】次に上記送信器2 内部の回路構成を図4に
示す。同図で、検出器1 の電磁誘導コイル18による電磁
誘導はEM受信部31にコンデンサ33と並列接続された電
磁誘導コイル32により周波数選択されて受信され、EM
受信部31でパルス信号化されて心拍信号cとしてCPU
34へ送られる。FIG. 4 shows a circuit configuration inside the transmitter 2. In the figure, the electromagnetic induction by the electromagnetic induction coil 18 of the detector 1 is received by the EM receiving unit 31 by selecting the frequency by the electromagnetic induction coil 32 connected in parallel with the capacitor 33,
The pulse signal is converted into a pulse signal by the receiving unit 31 and is used as a heartbeat signal c by the CPU
Sent to 34.
【0014】CPU34は、EM受信部31からの心拍信号
cにより送信器2 内の各回路の動作制御を行なうもの
で、心拍数の演算や次の心拍信号cの受信タイミングの
予測演算等を行なう演算部35、計時動作を行なう計時部
36、動作モード状態を保持するためのフラグレジスタ部
37、心拍数データを保持する心拍数レジスタ(図では
「HR」と示す)38、各種制御データを保持するレジス
タ部39と接続され、また液晶表示素子で構成される表示
部40に時刻や心拍数等の表示データを、RF送信部41に
緊急信号をそれぞれ出力する。The CPU 34 controls the operation of each circuit in the transmitter 2 based on the heartbeat signal c from the EM receiving unit 31, and calculates the heart rate and predicts the reception timing of the next heartbeat signal c. Arithmetic unit 35, timing unit that performs timing operation
36, Flag register for holding operation mode status
37, a heart rate register (shown as "HR" in the figure) 38 for holding heart rate data, a register section 39 for holding various control data, and a time and heart rate display on a display section 40 comprising a liquid crystal display element. The display data such as the number is output to the RF transmitter 41 as an emergency signal.
【0015】上記フラグレジスタ部37は、常時EM受信
部31による受信動作を実行する通常モード時にフラグ
“1”を立てる通常モードフラグレジスタ(図では
「N」と示す)、次に心拍信号cが受信されると予測さ
れる時点までの間EM受信部31の受信動作を停止させる
「安静モード」時にフラグ“1”を立てる安静モードフ
ラグレジスタ(図では「R」と示す)、心拍信号cの受
信を間欠的に行ない、その間EM受信部31の受信動作を
停止させる就寝モード時にフラグ“1”を立てる就寝モ
ードフラグレジスタ(図では「S」と示す)の3つのフ
ラグレジスタから構成されるもので、このフラグレジス
タ部37の各フラグのセット状態を認識することによりC
PU34が必要に応じてEM受信部31への動作信号dの送
出を停止し、その動作を一時的に停止させるものであ
る。The flag register 37 is a normal mode flag register (shown as "N" in the figure) for setting a flag "1" in a normal mode in which the EM receiving section 31 always performs a receiving operation. A rest mode flag register (indicated as “R” in the figure) that sets a flag “1” in a “rest mode” in which the reception operation of the EM receiving unit 31 is stopped until it is predicted to be received, A sleep mode flag register (shown as "S" in the figure) which sets a flag "1" in a sleep mode in which reception is performed intermittently and the reception operation of the EM receiver 31 is stopped during that time. By recognizing the set state of each flag of the flag register section 37,
The PU 34 stops sending the operation signal d to the EM receiver 31 as necessary, and temporarily stops the operation.
【0016】また、上記レジスタ部39は、心拍数が安定
しているか否かを判断するためのxレジスタ39a、心拍
信号cの受信間隔を保持するtレジスタ39b、今回心拍
信号cを受信した時刻を保持するtn レジスタ39c、演
算により算出した予測される次回の心拍信号cの受信時
刻を保持するtf レジスタ39dを備える。The register unit 39 includes an x register 39a for determining whether the heart rate is stable, a t register 39b for holding a reception interval of the heart rate signal c, and a time when the heart rate signal c is received this time. And a tf register 39d for holding a predicted reception time of the next heartbeat signal c calculated by calculation.
【0017】上記心拍数レジスタ38は、FIFO方式の
レジスタにより図示はしないが多段構成となっており、
最も新しく得られた心拍数データを多数個、例えば10
個連続して保持するようになっている。Although not shown, the heart rate register 38 has a multi-stage configuration using a FIFO type register.
A large number of the most recently obtained heart rate data, for example, 10
Are held continuously.
【0018】また、上記レジスタ部39内のtn レジスタ
39cは、図示はしないが2段構成となっており、今回の
受信時刻データ「tn 」及び前回の同データ「tn-1 」
が記憶保持可能となっている。RF送信部40は、CPU
34から送られてきた緊急信号を搬送周波数に重畳してこ
こでは図示しない受信器3 に対して送信する。次に上記
実施例の動作について述べる。The tn register in the register section 39
39c has a two-stage configuration, not shown, and includes the present reception time data "tn" and the previous reception time data "tn-1".
Can be stored. The RF transmission unit 40 is a CPU
The emergency signal transmitted from 34 is superimposed on the carrier frequency and transmitted to the receiver 3 (not shown). Next, the operation of the above embodiment will be described.
【0019】図5は上記「通常モード」「安静モード」
及び「就寝モード」間での移行状態を示すものである。
同図に示すように、常時受信を行なう「通常モード」実
行時受信時においてn回連続して一定した心拍数を得た
場合には「安静モード」に移行する。FIG. 5 shows the above "normal mode" and "rest mode".
And a “sleep mode”.
As shown in the figure, when the "normal mode" in which the reception is always performed is executed, if a constant heart rate is continuously obtained n times during the reception, the mode shifts to the "rest mode".
【0020】この「安静モード」はモニタ対象者5 の非
運動状態を想定したもので、次に心拍信号が受信される
タイミングを演算により予測し、心拍信号が受信されて
から次に心拍信号が受信されるであろう予測時刻まで、
EM受信部31の動作を停止させるものである。そして、
この「安静モード」においてさらにm回連続して一定し
た心拍数を得た場合には次に「就寝モード」に移行す
る。This "rest mode" is based on the assumption that the monitored subject 5 is in a non-exercising state. The next timing at which a heartbeat signal is received is predicted by calculation, and after the heartbeat signal is received, the next heartbeat signal is received. Until the expected time that will be received,
The operation of the EM receiver 31 is stopped. And
If a constant heart rate is further obtained m times continuously in the "rest mode", the process proceeds to the "sleep mode".
【0021】この「就寝モード」はモニタ対象者5 の就
寝状態を想定したもので、モニタ対象者5 に心臓疾患の
ある場合など、用途によっては採用せず、この「就寝モ
ード」への移行を禁止する場合もある。しかして、「就
寝モード」においては、例えば数分周期で上記「安静モ
ード」での動作と完全にEM受信部31を停止させる状態
とを繰返し実行する。This "sleep mode" is based on the assumption that the monitored subject 5 is in a sleeping state. If the monitored subject 5 has a heart disease, the "sleep mode" is not adopted depending on the application and the transition to the "sleep mode" is performed. It may be prohibited. Thus, in the "sleep mode", the operation in the "rest mode" and the state in which the EM receiver 31 is completely stopped are repeatedly executed, for example, every several minutes.
【0022】また、上記「安静モード」「就寝モード」
のいずれにあっても、予測されるタイミングで心拍信号
cを受信することができなかった場合や、心拍数の変動
が激しいと判断した場合には、直ちに「通常モード」に
復帰するものとする。次いで「安静モード」及び「就寝
モード」の各モードでのCPU34による心拍信号cの受
信処理を説明する。The above-mentioned "rest mode" and "sleep mode"
In any case, if the heart rate signal c cannot be received at the predicted timing or if it is determined that the heart rate fluctuates greatly, the mode immediately returns to the “normal mode”. . Next, reception processing of the heartbeat signal c by the CPU 34 in each of the “rest mode” and the “sleep mode” will be described.
【0023】図6は「安静モード」におけるEM受信部
31からの心拍信号cの受信処理の内容を示すものであ
る。EM受信部31から心拍信号cを受信するとCPU34
は、まずステップA1に示すように心拍信号cを受信し
た時点での時刻データを計時部36から取込み、これをレ
ジスタ部39のtn レジスタ39cに今回の受信時刻「t
n」として保持させる。FIG. 6 shows the EM receiver in the "rest mode".
This shows the content of the reception processing of the heartbeat signal c from the base station 31. When the heartbeat signal c is received from the EM receiver 31, the CPU 34
First, as shown in step A1, the time data at the time of receiving the heartbeat signal c is fetched from the timer section 36, and this is stored in the tn register 39c of the register section 39 at the current reception time "t
n ”.
【0024】次いでステップA2でCPU34は、このt
n レジスタ39cに保持させた今回の受信時刻「tn 」と
tf レジスタ39dに前回の受信処理時に保持させた予測
時刻とが等しいか否かを判断する。この場合、CPU34
は内部に記憶している図示しない心拍変動許容値「tm
」をもって、tf レジスタ39dに保持される予測時刻
の前後「tm 」の幅の範囲内にtn レジスタ39cに保持
させた今回の受信時刻「tn 」があれば予測時刻である
と判断し、次にステップA3でEM受信部31による心拍
信号cの受信動作を一時的に停止させる。Next, at step A2, the CPU 34
It is determined whether the current reception time "tn" held in the n register 39c is equal to the predicted time held in the tf register 39d during the previous reception processing. In this case, the CPU 34
Is the heart rate variability allowable value (tm, not shown) stored inside.
], If the current reception time "tn" held in the tn register 39c is within the range of "tm" before and after the prediction time held in the tf register 39d, it is determined that the time is the prediction time. In step A3, the receiving operation of the heartbeat signal c by the EM receiving unit 31 is temporarily stopped.
【0025】図8は「通常モード」から「安静モード」
に移行した直後の受信停止状態を示すものである。同図
に示すようにCPU34は、それまで時間間隔「T」で安
定して心拍信号cを受信していたとすると、「安静モー
ド」に移行しても、心拍信号cのパルスを受信した時刻
から「T−tm 」の時間が経過する間での間、EM受信
部31への動作信号dを停止してその動作を一時的に停止
させるものである。FIG. 8 shows the "normal mode" to the "rest mode".
Shows the reception stop state immediately after the transition to. As shown in the figure, assuming that the CPU 34 has received the heartbeat signal c stably at the time interval “T” until then, even when shifting to the “rest mode”, the CPU 34 starts from the time when the pulse of the heartbeat signal c is received. During the period of time "T-tm", the operation signal d to the EM receiver 31 is stopped to temporarily stop the operation.
【0026】この停止処理を実行すると共にCPU34
は、ステップA4に示すようにtn レジスタ39cに保持
される今回の受信時刻データ「tn 」から前回の受信時
刻データ「tn-1 」を演算部35にて減算させ、その差を
新たな時間間隔データとしてtレジスタ39bに保持させ
る。The stop process is executed and the CPU 34
As shown in step A4, the previous reception time data "tn-1" is subtracted from the current reception time data "tn" held in the tn register 39c by the computing unit 35, and the difference is calculated as a new time interval. The data is held in the t register 39b.
【0027】その後にCPU34は、ステップA5でtレ
ジスタ39bに保持した受信間隔データを除数として定数
「60(秒)」を用いて演算部35で演算「60/T」を
実行させ、その商を今回の1分間の心拍数に該当する心
拍数データ「HRn 」として心拍数レジスタ38に保持さ
せる。Thereafter, the CPU 34 causes the calculation unit 35 to execute the calculation "60 / T" using the reception interval data held in the t register 39b as a divisor in step A5 and using a constant "60 (seconds)". The heart rate register 38 holds the heart rate data "HRn" corresponding to the current one-minute heart rate.
【0028】次いでステップA6で心拍数が安定してい
るか否かを判断するためのxレジスタ39aを「+1」更
新設定し、ステップA7でこの更新設定したxレジスタ
39aの内容がCPU34内に保持される定数「m」となっ
たか否か判断する。Then, in step A6, the x register 39a for determining whether or not the heart rate is stable is updated and set to "+1", and in step A7, the updated x register is set.
It is determined whether or not the content of 39a has become the constant "m" held in the CPU 34.
【0029】まだ定数「m」に達しないと判断した場合
には、次いでステップA8で心拍数レジスタ38に保持さ
れる最も新しい10個の連続した心拍数データ「HRn
〜HRn-9 」とtn レジスタ39cに保持される今回の受
信時刻データ「tn 」により演算部35にて次回の心拍信
号cが受信される予測時刻を算出し、これをtf レジス
タ39dに保持させる。その後、ステップA9で実際に次
の心拍信号cのパルスが受信されるまで待機し、パルス
ありと判断したら再び上記ステップA1からの処理を繰
返し実行する。If it is determined that the constant "m" has not yet been reached, then, at step A8, the ten most recent consecutive heart rate data "HRn" held in the heart rate register 38.
HRn-9 "and the current reception time data" tn "held in the tn register 39c, the calculation unit 35 calculates the predicted time at which the next heartbeat signal c will be received, and stores this in the tf register 39d. . After that, in step A9, the process waits until the pulse of the next heartbeat signal c is actually received, and when it is determined that there is a pulse, the process from step A1 is repeated again.
【0030】上記ステップA2でtf レジスタ39dに保
持される予測時刻の前後「tm 」の幅の範囲内にtn レ
ジスタ39cに保持させた今回の受信時刻「tn 」がな
く、心拍信号cが予測時刻を外れて受信されたと判断し
た場合にCPU34は、次にステップA10でxレジスタ
39aの内容をクリアして「0」とし、続くステップA1
1でフラグレジスタ部37の通常モードフラグレジスタに
新たにフラグ“1”を、同安静モードフラグレジスタに
それまでのフラグ“1”に代えて“0”をそれぞれセッ
トしてから、「通常モード」の受信処理状態に復帰す
る。In step A2, there is no current reception time "tn" held in the tn register 39c within the range of "tm" before and after the prediction time held in the tf register 39d in step A2. If the CPU 34 determines that the received signal is out of the range, the CPU 34 next proceeds to step A10 where the x register is received.
Clear the contents of 39a to "0", and continue to step A1
When the flag is set to 1, a new flag "1" is set in the normal mode flag register of the flag register section 37, and "0" is set in the same quiet mode flag register in place of the previous flag "1", and then the "normal mode" is set. To the reception processing state.
【0031】また、上記ステップA7で更新設定したx
レジスタ39aの内容がCPU34内に保持される定数
「m」となったと判断した場合にCPU34は、次いでス
テップA12でxレジスタ39aの内容をクリアして
「0」とし、続くステップA13でフラグレジスタ部37
の就寝モードフラグレジスタに新たにフラグ“1”を、
同安静モードフラグレジスタにそれまでのフラグ“1”
に代えて“0”をそれぞれセットしてから、「就寝モー
ド」の受信処理状態に移行する。Further, x updated and set in step A7 is used.
When determining that the content of the register 39a has become the constant "m" held in the CPU 34, the CPU 34 then clears the content of the x register 39a to "0" in step A12, and then proceeds to step A13 to reset the flag register unit. 37
A new flag “1” in the sleep mode flag register of
The previous flag “1” is stored in the resting mode flag register.
Is set to "0" in place of, and then the mode shifts to the "sleeping mode" reception processing state.
【0032】図7はこの「就寝モード」におけるEM受
信部31からの心拍信号cの受信処理の内容を示すもので
ある。EM受信部31から心拍信号cを受信するとCPU
34は、まずステップB1に示すように心拍信号cを受信
した時点での時刻データを計時部36から取込み、これを
レジスタ部39のtn レジスタ39cに今回の受信時刻「t
n 」として保持させる。FIG. 7 shows the contents of the processing of receiving the heartbeat signal c from the EM receiver 31 in the "sleep mode". When the heart rate signal c is received from the EM receiver 31, the CPU
First, as shown in step B1, the time data at the time when the heartbeat signal c is received is fetched from the timer section 36, and the time data is stored in the tn register 39c of the register section 39 at the current reception time "t".
n ”.
【0033】次いでステップB2でCPU34は、xレジ
スタ39aの内容が「0」であるか否かにより上記心拍信
号cの受信が「就寝モード」になってから最初のもので
あるか否かを判断する。Next, in step B2, the CPU 34 determines whether or not the reception of the heartbeat signal c is the first one after the "sleep mode" has been received, based on whether or not the content of the x register 39a is "0". I do.
【0034】xレジスタ39aの内容が「0」である場合
にCPU34は、動作の安定を計るために今回の心拍信号
cの受信に関しては予測時刻に関する処理を見送ること
とし、次にステップB12でxレジスタ39aの内容を
「+1」更新設定して「1」とした後に、次いでステッ
プB13で心拍信号cのパルスが受信されるまで待機
し、パルスありと判断したら再び上記ステップB1から
の処理を繰返し実行する。When the content of the x register 39a is "0", the CPU 34 decides to postpone the processing relating to the predicted time for the reception of the current heartbeat signal c in order to measure the stability of the operation. After the content of the register 39a is updated to "+1" and set to "1", the process waits until a pulse of the heartbeat signal c is received in step B13, and if it is determined that there is a pulse, the process from step B1 is repeated again. Execute.
【0035】「就寝モード」になってから2回目移行の
心拍信号cの受信にあっては、ステップB1で心拍信号
cを受信した時点での時刻データをtn レジスタ39cに
今回の受信時刻「tn 」として保持させ、ステップB2
でxレジスタ39aの内容が「0」ではないと判断した後
に、ステップB3でtn レジスタ39cに保持させた今回
の受信時刻「tn 」とtf レジスタ39dに前回の受信処
理時に保持させた予測時刻とが等しいか否かを判断す
る。ここで予測時刻であると判断するとCPU34は、次
にステップB4でEM受信部31による心拍信号cの受信
動作を一時的に停止させる。When the heartbeat signal c is shifted for the second time after entering the "sleep mode", the time data at the time when the heartbeat signal c is received in step B1 is stored in the tn register 39c in the current reception time "tn". "In step B2.
After determining that the content of the x register 39a is not "0", the current reception time "tn" held in the tn register 39c in step B3 and the estimated time held in the previous reception processing in the tf register 39d It is determined whether or not are equal. If it is determined that the time is the predicted time, the CPU 34 temporarily stops the operation of receiving the heartbeat signal c by the EM receiving unit 31 in step B4.
【0036】図9は「安静モード」から「就寝モード」
に移行した直後の受信停止状態を示すものである。同図
に示すようにCPU34は、それまで「安静モード」で心
拍信号cが受信されると予測される特定時間帯のみ動作
信号dによりEM受信部31での受信動作を実行させてい
たが、「就寝モード」に移行しても始めの1回のみ前記
「安静モード」の動作を続行し、それからは予め特定さ
れる時間、例えば心拍信号cのパルスを2発受信する
間、EM受信部31への動作信号dを連続して停止してそ
の動作を停止させ、以後心拍信号cのパルス2発分ず
つ、動作の停止状態と「安静モード」での動作を繰り返
し実行するものである。FIG. 9 shows a transition from the "rest mode" to the "sleep mode".
Shows the reception stop state immediately after the transition to. As shown in the figure, the CPU 34 has been performing the receiving operation in the EM receiving unit 31 by the operation signal d only in a specific time period in which the heartbeat signal c is predicted to be received in the “rest mode” until then. Even after the transition to the "sleep mode", the operation of the "rest mode" is continued only once for the first time, and thereafter, the EM receiving unit 31 continues for a predetermined time, for example, while receiving two pulses of the heartbeat signal c. The operation signal d is continuously stopped to stop the operation, and thereafter, the operation stop state and the operation in the “rest mode” are repeatedly executed for every two pulses of the heartbeat signal c.
【0037】ステップB4での停止処理を実行すると共
にCPU34は、ステップB5に示すようにtn レジスタ
39cに保持される今回の受信時刻データ「tn 」から前
回の受信時刻データ「tn-1 」を演算部35にて減算さ
せ、その差を新たな時間間隔データとしてtレジスタ39
bに保持させる。The stop processing in step B4 is executed, and the CPU 34 sets the tn register as shown in step B5.
The arithmetic unit 35 subtracts the previous reception time data "tn-1" from the current reception time data "tn" held in 39c, and uses the difference as new time interval data in the t register 39.
b.
【0038】その後にCPU34は、ステップB6でtレ
ジスタ39bに保持した受信間隔データを除数として定数
「60(秒)」を用いて演算部35で演算「60/T」を
実行させ、その商を今回の1分間の心拍数に該当する心
拍数データ「HRn 」として心拍数レジスタ38に保持さ
せる。Thereafter, the CPU 34 causes the calculation unit 35 to execute the calculation "60 / T" using the reception interval data held in the t register 39b in step B6 as a divisor and using a constant "60 (seconds)". The heart rate register 38 holds the heart rate data "HRn" corresponding to the current one-minute heart rate.
【0039】次いでCPU34はステップB7でこの心拍
数レジスタ38に保持させた今回の心拍数データ「HRn
」と前回の同データ「HRn-1 」との差の絶対値「|
HRn−HRn-1 |」を演算部35にて算出し、続くステ
ップB8でこの算出した値がある所定値に比して大きい
か小さいかにより心拍数の変動が激しいか否かを判断す
る。Next, the CPU 34 stores the current heart rate data "HRn" held in the heart rate register 38 in step B7.
And the absolute value of the difference between the previous data "HRn-1" and "|
HRn-HRn-1 | "is calculated by the computing unit 35, and in the following step B8, it is determined whether or not the heart rate fluctuation is severe depending on whether the calculated value is larger or smaller than a predetermined value.
【0040】ここで小さいと判断すると、その時点では
心拍に異常なしと判断し、次いでステップB9に進んで
心拍数レジスタ38に保持される最も新しい10個の連続
した心拍数データ「HRn 〜HRn-9 」とtn レジスタ
39cに保持される今回の受信時刻データ「tn 」により
演算部35にて次回の心拍信号cが受信される予測時刻を
算出し、これをtf レジスタ39dに保持させる。その
後、ステップB10で実際に次の心拍信号cのパルスが
受信されるまで待機し、パルスありと判断したら再び上
記ステップB1からの処理を繰返し実行する。If it is determined that the heart rate is small, it is determined that there is no abnormality in the heart rate at that time. Then, the process proceeds to step B9, where the latest ten consecutive heart rate data "HRn to HRn-" held in the heart rate register 38 are stored. 9 "and the tn register
Based on the current reception time data "tn" held in 39c, the calculation unit 35 calculates a predicted time at which the next heartbeat signal c will be received, and stores this in the tf register 39d. After that, in step B10, the process waits until the pulse of the next heartbeat signal c is actually received, and if it is determined that there is a pulse, the process from step B1 is repeated again.
【0041】また、例えばモニタ対象者5 が就寝してい
る状態から覚醒するなどの理由により、上記ステップB
3で心拍信号cが予測時刻を外れて受信されたと判断し
た場合、あるいは上記ステップB8で心拍数の変動が激
しいと判断した場合にCPU34は、次にステップB11
でフラグレジスタ部37の通常モードフラグレジスタに新
たにフラグ“1”を、同就寝モードフラグレジスタにそ
れまでのフラグ“1”に代えて“0”をそれぞれセット
してから、「通常モード」の受信処理状態に復帰する。Further, for example, because the monitored person 5 wakes up from a state of sleeping, the above-described step B is performed.
If it is determined in step 3 that the heartbeat signal c has been received outside the predicted time, or if it is determined in step B8 that the heart rate has fluctuated greatly, the CPU 34 proceeds to step B11.
Then, a new flag "1" is set in the normal mode flag register of the flag register unit 37, and "0" is set in the sleeping mode flag register in place of the previous flag "1". Return to the reception processing state.
【0042】このように、「通常モード」から「安静モ
ード」へ、そして「安静モード」から「就寝モード」へ
と移行することにより、順次CPU34からEM受信部31
への動作信号dによりその動作状態を段階的に停止さ
せ、受信待機状態でのEM受信部31での無駄な電力消費
を抑えることにより、送信器2 の電源である電池を有効
に使用することができる。As described above, by shifting from the “normal mode” to the “rest mode” and from the “rest mode” to the “sleep mode”, the CPU 34 sequentially transmits the EM receiving unit 31.
The operation state is gradually stopped by the operation signal d to suppress unnecessary power consumption in the EM receiving unit 31 in the reception standby state, so that the battery which is the power supply of the transmitter 2 is used effectively. Can be.
【0043】[0043]
【発明の効果】以上詳記した如くこの発明によれば、モ
ニタ対象者の身体に直接取付けられた心拍検出器から送
信されてくる心拍信号を受信する受信部と、この受信部
で受信された心拍信号によりモニタ対象者の心拍異常を
判断する異常判断部と、この異常判断部でモニタ対象者
の心拍異常と判断した際に心拍異常発生時の報知処理を
行なう受信器に対して緊急信号を送信する送信部を有す
る送信部において、上記受信部で受信される次の心拍信
号の受信タイミングを予測演算する演算部を設け、この
演算部で得られた受信タイミングで上記第1の受信部が
心拍信号の受信をしたか否かを判断して、予測した受信
タイミングで心拍信号を所定回数連続して受信した場合
には上記第1の受信部への駆動通電を上記演算部で得ら
れる次の予測受信タイミングまでの間停止する節電モー
ドに移行し、この節電モード中に予測した受信タイミン
グで心拍信号を受信しなかった場合にはただちに上記第
1の受信部への駆動通電を常時行なう通常モードに移行
させるべくモード制御するようにしたので、心拍が安定
していると判断される間は節電モードに自動的に移行
し、次の心拍信号が受信されると予測されるタイミング
までの間は受信部の動作を停止させて無駄な電力の消費
を抑え、送信器の消費電力を低減してその電源となる電
池の寿命を延ばすことが可能な常時心拍モニタシステム
を提供することができる。As described above in detail, according to the present invention, a receiving section for receiving a heart rate signal transmitted from a heart rate detector directly attached to the body of a person to be monitored, and a receiving section for receiving the heart rate signal. An emergency signal is sent to an abnormality judging unit that judges an abnormal heartbeat of the monitored person based on the heartbeat signal, and a receiver that performs a notification process when a heartbeat abnormality occurs when the abnormal judgment unit judges that the monitored object person has an abnormal heartbeat. In a transmission unit having a transmission unit for transmitting, a calculation unit for predicting and calculating the reception timing of the next heartbeat signal received by the reception unit is provided, and the reception unit obtains the first reception unit with the reception timing obtained by the calculation unit. It is determined whether or not the heartbeat signal has been received, and when the heartbeat signal is continuously received a predetermined number of times at the predicted reception timing, the drive energization to the first receiving unit is obtained by the arithmetic unit. Prediction reception The operation mode shifts to the power saving mode in which the operation is stopped until the timing is reached. If the heartbeat signal is not received at the reception timing predicted during the power saving mode, the mode immediately shifts to the normal mode in which the first receiving unit is always energized. Mode control so that the system automatically shifts to the power saving mode while it is determined that the heart rate is stable, and until the timing at which the next heart rate signal is predicted to be received, the receiving unit The present invention can provide a continuous heart rate monitoring system capable of stopping the operation of the device, suppressing unnecessary power consumption, reducing the power consumption of the transmitter, and extending the life of the battery serving as the power source.
【図1】本発明の一実施例に係る外観構成を示す図。FIG. 1 is a diagram showing an external configuration according to an embodiment of the present invention.
【図2】図1の検出器と送信器のモニタ対象者への装着
状態を示す図。FIG. 2 is a diagram showing a state where the detector and the transmitter shown in FIG. 1 are attached to a person to be monitored.
【図3】検出器の内部回路構成を示すブロック図。FIG. 3 is a block diagram showing an internal circuit configuration of the detector.
【図4】受信器の内部回路構成を示すブロック図。FIG. 4 is a block diagram showing an internal circuit configuration of the receiver.
【図5】各動作モードの遷移状態を説明する図。FIG. 5 is a diagram illustrating transition states of each operation mode.
【図6】図5のCPUによる安静モード時の受信処理の
内容を示すフローチャート。FIG. 6 is a flowchart showing the contents of a reception process in a rest mode by the CPU of FIG. 5;
【図7】図5のCPUによる就寝モード時の受信処理の
内容を示すフローチャート。FIG. 7 is a flowchart showing the contents of a reception process in a sleep mode by the CPU of FIG. 5;
【図8】通常モードから安静モードへ移行した直後の受
信停止状態を示すタイミングチャート。FIG. 8 is a timing chart showing a reception stop state immediately after a transition from the normal mode to the quiet mode.
【図9】安静モードから就寝モードへ移行した直後の受
信停止状態を示すタイミングチャート。FIG. 9 is a timing chart showing a reception stop state immediately after a transition from the rest mode to the sleep mode;
1 …検出器、2 …送信器、3 …受信器、4 …電話機、5
…モニタ対象者、6 …バンド、11…心拍検出部、12…E
M送信制御部、12a…発振回路、18,32…電磁誘導コイ
ル、31…EM受信部、34…CPU、35…演算部、36…計
時部、37…フラグレジスタ部、38…心拍数レジスタ(H
R)、39…レジスタ部、39a…xレジスタ、39b…tレ
ジスタ、39c…tn レジスタ、39d…tf レジスタ、40
…表示部、41…RF送信部。1 ... detector, 2 ... transmitter, 3 ... receiver, 4 ... telephone, 5
... Monitored person, 6 ... Band, 11 ... Heart rate detector, 12 ... E
M transmission control unit, 12a oscillation circuit, 18, 32 electromagnetic induction coil, 31 EM reception unit, 34 CPU, 35 arithmetic unit, 36 clock unit, 37 flag register unit, 38 heart rate register ( H
R), 39 register section, 39a x register, 39b t register, 39c tn register, 39d tf register, 40
... Display unit, 41 ... RF transmission unit.
Claims (1)
その心拍を検知する検知手段と、この検知手段で検知さ
れた心拍を信号化して送信出力する第1の送信手段とを
有する心拍検出器と、 この心拍検出器からの心拍信号を受信する第1の受信手
段と、この第1の受信手段で受信された心拍信号により
モニタ対象者の心拍異常を判断する異常判断手段と、こ
の異常判断手段でモニタ対象者の心拍異常と判断した際
に緊急信号を送信する第2の送信手段と、上記第1の受
信手段で受信される次の心拍信号の受信タイミングを予
測演算する演算手段と、この演算手段で得られた受信タ
イミングで上記第1の受信手段が心拍信号の受信をした
か否かを判断するタイミング判断手段と、このタイミン
グ判断手段が予測した受信タイミングで心拍信号を所定
回数連続して受信したと判断した場合に上記第1の受信
手段への駆動通電を上記演算手段で得られる次の予測受
信タイミングまでの間停止する節電モードに移行させる
と共に、この節電モード中に予測した受信タイミングで
心拍信号を受信しなかったと判断した場合にはただちに
上記第1の受信手段への駆動通電を常時行なう通常モー
ドに移行させるモード制御手段を有する送信器と、 この送信器からの緊急信号を受信する第2の受信手段
と、この第2の受信手段で受信された緊急信号に従って
心拍異常発生時の報知処理を行なう報知処理手段とを有
する受信器とからなることを特徴とする常時心拍モニタ
システム。Claims: 1. The device is directly attached to the body of a person to be monitored,
A heartbeat detector having detection means for detecting the heartbeat; first transmission means for converting the heartbeat detected by the detection means into a signal and transmitting and outputting the signal; a first heartbeat signal receiving the heartbeat signal from the heartbeat detector Receiving means, an abnormality judging means for judging a heart rate abnormality of the person to be monitored based on the heartbeat signal received by the first receiving means, and an emergency signal when the abnormality judging means judges that the heart rate of the person to be monitored is abnormal. , A calculating means for predicting and calculating the reception timing of the next heartbeat signal received by the first receiving means, and the first receiving based on the receiving timing obtained by the calculating means. Means for determining whether or not the means has received a heartbeat signal, and the first means when the timing determination means determines that the heartbeat signal has been continuously received a predetermined number of times at the predicted reception timing. When shifting to the power saving mode in which the drive energization to the receiving means is stopped until the next predicted reception timing obtained by the arithmetic means, and it is determined that the heartbeat signal has not been received at the reception timing predicted during this power saving mode A transmitter having mode control means for immediately shifting to a normal mode in which the first receiving means is always energized for driving; a second receiving means for receiving an emergency signal from the transmitter; And a notification processing means for performing notification processing when a heart rate abnormality occurs in accordance with the emergency signal received by the receiving means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3341308A JP3021886B2 (en) | 1991-12-24 | 1991-12-24 | Constant heart rate monitoring system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3341308A JP3021886B2 (en) | 1991-12-24 | 1991-12-24 | Constant heart rate monitoring system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05168602A JPH05168602A (en) | 1993-07-02 |
JP3021886B2 true JP3021886B2 (en) | 2000-03-15 |
Family
ID=18345050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3341308A Expired - Fee Related JP3021886B2 (en) | 1991-12-24 | 1991-12-24 | Constant heart rate monitoring system |
Country Status (1)
Country | Link |
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JP (1) | JP3021886B2 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3905536B2 (en) * | 1995-03-23 | 2007-04-18 | セイコーインスツル株式会社 | Pulse meter control method |
JP4555919B2 (en) * | 1997-03-17 | 2010-10-06 | ノンインベイシブ モニタリング システムズ インコーポレイテッド | Physiological signature feedback system |
KR100810989B1 (en) | 2000-04-17 | 2008-03-11 | 바이보메트릭스, 인크. | Systems and methods for ambulatory monitoring of physiological signs |
CN1926553A (en) * | 2004-02-27 | 2007-03-07 | 皇家飞利浦电子股份有限公司 | Staged life-threatening arrhythmia detection algorithm for minimizing power consumption |
JP4515142B2 (en) * | 2004-05-07 | 2010-07-28 | セイコーインスツル株式会社 | Biological information measuring device |
US9492084B2 (en) | 2004-06-18 | 2016-11-15 | Adidas Ag | Systems and methods for monitoring subjects in potential physiological distress |
JP4739054B2 (en) * | 2006-02-18 | 2011-08-03 | セイコーインスツル株式会社 | Biological information measuring device |
US9833184B2 (en) | 2006-10-27 | 2017-12-05 | Adidas Ag | Identification of emotional states using physiological responses |
JP5922105B2 (en) * | 2010-05-24 | 2016-05-24 | サリス サイクリング グループ,インコーポレーテッド | System and apparatus for correlating heart rate with exercise parameters |
US8519867B2 (en) * | 2010-12-23 | 2013-08-27 | General Electric Company | Method and system for reducing transmitter power consumption while avoiding delay of displayed information |
KR101920467B1 (en) | 2013-11-20 | 2018-11-21 | 삼성전자주식회사 | A gateway and a sesor node communicating each other in a wireless sensor network |
JP6598570B2 (en) * | 2015-08-11 | 2019-10-30 | 日本光電工業株式会社 | Biological information measuring device and program |
-
1991
- 1991-12-24 JP JP3341308A patent/JP3021886B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH05168602A (en) | 1993-07-02 |
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