JPH119563A - Vibrationproof pulse ear sensor - Google Patents

Vibrationproof pulse ear sensor

Info

Publication number
JPH119563A
JPH119563A JP9171372A JP17137297A JPH119563A JP H119563 A JPH119563 A JP H119563A JP 9171372 A JP9171372 A JP 9171372A JP 17137297 A JP17137297 A JP 17137297A JP H119563 A JPH119563 A JP H119563A
Authority
JP
Japan
Prior art keywords
pulse
vibration
sensor
detection signal
acceleration sensor
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.)
Pending
Application number
JP9171372A
Other languages
Japanese (ja)
Inventor
Yasuyuki Murakami
泰之 村上
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.)
Senoh KK
Senoh Corp
Original Assignee
Senoh KK
Senoh Corp
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 Senoh KK, Senoh Corp filed Critical Senoh KK
Priority to JP9171372A priority Critical patent/JPH119563A/en
Publication of JPH119563A publication Critical patent/JPH119563A/en
Pending legal-status Critical Current

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  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

PROBLEM TO BE SOLVED: To enable accurate measurement of pulses by eliminating wrong detection caused by noises such as vibration without impairing advantage of a smaller size and a lighter weight in a pulse ear sensor having a detecting section in which an earlap is pinched between a light emitting element for emitting infrared rays and a photodetector to obtain a pulse detection signal based on a transmittance of light through the earlap. SOLUTION: A detection piece 12 of a detecting section 2 is provided with an acceleration sensor 4 which is build in a smaller size with a lighter weight to detect vibration generated during the period of using a training machine or the like. Detection signals of the detecting section 2 and the acceleration sensor 4 are introduced into a differential part 7a of a microcomputer 7 through an amplifier 5 and an A/D converter 6. The differential part 7a performs a computation of subtracting a vibration component from a pulse detection signal containing vibration to obtain a correct pulse signal.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、被検者の体の耳た
ぶに装着して脈拍を測定する脈拍イヤーセンサに関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulse ear sensor which measures a pulse by wearing it on an earlobe of a subject.

【0002】[0002]

【従来の技術】脈拍イヤーセンサは、ランニングマシ
ン、自転車、階段上りマシン等の各種トレーニングマシ
ンの使用時に、被検者の体の耳たぶに装着して脈拍の測
定を行うものであり、例えば心肺持久力トレーニングに
よる体力測定、病院や研究室でのデータ収集およびスポ
ーツ医学の分析等の分野で幅広く利用されている。
2. Description of the Related Art A pulse ear sensor is used to measure a pulse when worn on a subject's earlobe when various training machines such as a running machine, a bicycle, and a stair climbing machine are used. It is widely used in fields such as physical strength measurement by force training, data collection in hospitals and laboratories, and analysis of sports medicine.

【0003】この脈拍イヤーセンサは小型、軽量である
ことを特徴とし、主に赤外変調光透過方式が採用され、
被検者の耳たぶを貫通する光(赤外線)の透過率の変化
に基づいて脈拍数を測定している。
[0003] The pulse ear sensor is characterized in that it is small and lightweight, and mainly adopts an infrared modulation light transmission system.
The pulse rate is measured based on a change in the transmittance of light (infrared rays) penetrating the subject's earlobe.

【0004】[0004]

【発明が解決しようとする課題】前記脈拍イヤーセンサ
を、ランニングマシン、自転車、階段上りマシン等のト
レーニングマシンによる運動能力測定時に使用した場
合、脈拍イヤーセンサが前記運動による振動等のノイズ
を拾い、脈拍を誤検出してしまう。このため正確な脈拍
測定が行えないという問題があった。
When the pulse ear sensor is used at the time of measuring athletic ability by a training machine such as a running machine, a bicycle, and a stair climbing machine, the pulse ear sensor picks up noise such as vibration due to the exercise, The pulse is erroneously detected. For this reason, there has been a problem that accurate pulse measurement cannot be performed.

【0005】本発明は上記の点に鑑みてなされたもので
その目的は、小型、軽量であるという利点を損なうこと
なく振動等のノイズによる誤検出をなくし、正確な脈拍
測定が行える脈拍イヤーセンサ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 points, and has as its object to eliminate a false detection due to noise such as vibration without impairing the advantages of small size and light weight, and to provide a pulse ear sensor capable of accurate pulse measurement. Is to provide.

【0006】[0006]

【課題を解決するための手段】[Means for Solving the Problems]

(1)本発明は、被検者の耳たぶを貫通する光の透過率
に基づいて脈拍検出信号を得る脈拍検出部を有し、被検
者の脈拍を測定する脈拍イヤーセンサにおいて、前記脈
拍検出部に設けられ、振動を検出する加速度センサと、
前記脈拍検出部の脈拍検出信号から前記加速度センサの
振動検出信号を差し引く差動部とを備え、不要振動成分
を取り除いた脈拍測定信号を得ることを特徴としてい
る。
(1) The present invention provides a pulse ear sensor for measuring a pulse of a subject, the pulse ear sensor having a pulse detection unit for obtaining a pulse detection signal based on the transmittance of light passing through an earlobe of the subject. An acceleration sensor provided in the unit and detecting vibration;
A differential section for subtracting a vibration detection signal of the acceleration sensor from a pulse detection signal of the pulse detection section, and obtains a pulse measurement signal from which unnecessary vibration components have been removed.

【0007】(2)脈拍イヤーセンサを耳たぶに装着
し、トレーニングマシンにより運動を行うと、加速度セ
ンサには前記マシンおよび運動による振動成分が入力さ
れる。脈拍検出部の脈拍検出信号中には、脈拍信号と前
記振動成分とが含まれる。この脈拍検出信号中の振動成
分は、差動部において前記加速度センサの検出信号によ
り打ち消されるので、正確な脈拍信号のみを脈拍測定信
号として得ることができる。
(2) When the pulse ear sensor is worn on the earlobe and exercise is performed by the training machine, vibration components due to the machine and exercise are input to the acceleration sensor. The pulse detection signal of the pulse detector includes a pulse signal and the vibration component. Since the vibration component in the pulse detection signal is canceled by the detection signal of the acceleration sensor in the differential section, only an accurate pulse signal can be obtained as a pulse measurement signal.

【0008】[0008]

【発明の実施の形態】以下、本発明の実施の形態を図面
を参照しながら説明する。図1において1は被検者の耳
たぶ、2は該耳たぶ1に挟んで取り付けられる脈拍イヤ
ーセンサの検出部である。この検出部2は検出片12
と、該検出片12の、耳たぶを両側から挟む挟持部に設
けられた発光素子3aおよび受光素子3bとで構成され
ている。
Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes an earlobe of a subject, and 2 denotes a detection unit of a pulse ear sensor which is attached to the earlobe 1. The detection unit 2 includes a detection piece 12
And a light-emitting element 3a and a light-receiving element 3b provided on a holding portion of the detection piece 12 which holds the earlobe from both sides.

【0009】4は、前記検出片12に設けられ、振動を
検出する加速度センサである。5は、脈拍イヤーセンサ
のリード線2aおよび加速度センサ4のリード線4aを
介して各々入力される脈拍検出信号および振動検出信号
を各々増幅するアンプである。このアンプ5で増幅され
た脈拍検出信号および振動検出信号はA/D変換器6に
よって各々ディジタル信号に変換され、マイクロコンピ
ュータ7に入力される。このマイクロコンピュータ7
は、脈拍イヤーセンサの検出部2で検出された脈拍検出
信号から加速度センサ4で検出された振動検出信号を差
し引くディジタル演算を行う差動部7aを有している。
An acceleration sensor 4 is provided on the detection piece 12 and detects vibration. Reference numeral 5 denotes an amplifier that amplifies the pulse detection signal and the vibration detection signal input via the lead 2a of the pulse ear sensor and the lead 4a of the acceleration sensor 4, respectively. The pulse detection signal and the vibration detection signal amplified by the amplifier 5 are converted into digital signals by an A / D converter 6 and input to a microcomputer 7. This microcomputer 7
Has a differential unit 7a that performs a digital operation of subtracting the vibration detection signal detected by the acceleration sensor 4 from the pulse detection signal detected by the detection unit 2 of the pulse ear sensor.

【0010】次に上記のように構成された装置の動作を
述べる。耳たぶ1に脈拍イヤーセンサの検出部2を装着
した状態でトレーニングマシン等による運動を行った場
合、リード線2aを通して検出部2から導入される脈拍
検出信号は図2(a)に示すとおりとなり、図示X部の
ように運動中の振動を拾う。
Next, the operation of the apparatus configured as described above will be described. When exercise is performed by a training machine or the like with the detection unit 2 of the pulse ear sensor attached to the earlobe 1, a pulse detection signal introduced from the detection unit 2 through the lead wire 2a is as shown in FIG. The vibration during exercise is picked up as indicated by X in the figure.

【0011】このX部に示す運動中の振動は、加速度セ
ンサ4においても図2(b)のように検出され、このX
部の信号(振動有の信号)は図2(a)、(b)とも同
一位相となるため、該振動成分を差動部7aにおいてキ
ャンセルすることができる。
The vibration during the movement indicated by the portion X is also detected by the acceleration sensor 4 as shown in FIG.
Since the signal of the section (signal with vibration) has the same phase in FIGS. 2A and 2B, the vibration component can be canceled in the differential section 7a.

【0012】すなわちマイクロコンピュータ7の差動部
7aは、図2(a)に示す振動成分を含んだ脈拍検出信
号から図2(b)に示す振動検出信号を差し引き、振動
成分を除去した脈拍検出信号を演算する。これによって
運動時の振動による誤検出が防止され、正確な脈拍信号
を得ることができる。
That is, the differential unit 7a of the microcomputer 7 subtracts the vibration detection signal shown in FIG. 2B from the pulse detection signal containing the vibration component shown in FIG. Calculate the signal. As a result, erroneous detection due to vibration during exercise can be prevented, and an accurate pulse signal can be obtained.

【0013】[0013]

【実施例】前記加速度センサ4は、例えば図3に示すよ
うな圧電セラミック方式のショックセンサを用いる。こ
のショックセンサは図3(a)のように、衝撃が加わっ
た時の圧電素子21a,21bのたわみから生じる電荷
を検出するものであり、外観は図3(b)のように構成
されている。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As the acceleration sensor 4, for example, a piezoelectric ceramic type shock sensor as shown in FIG. 3 is used. As shown in FIG. 3A, this shock sensor detects electric charges generated by bending of the piezoelectric elements 21a and 21b when an impact is applied, and has an appearance as shown in FIG. 3B. .

【0014】図3(b)において、22は内部にシール
ドメッキを施して耐ノイズ性を向上させた高耐熱液晶樹
脂から成るケースであり、該ケース22内にバイモルフ
型圧電セラミック21(圧電素子21a,21b)が収
納されている。
In FIG. 3 (b), reference numeral 22 denotes a case made of a high heat-resistant liquid crystal resin whose interior is shield-plated to improve noise resistance. In the case 22, a bimorph type piezoelectric ceramic 21 (piezoelectric element 21a) is provided. , 21b) are stored.

【0015】このように構成されたショックセンサは例
えば高さ1.2mm、縦6.4mm、横2.6mmに形
成されて非常に小型、軽量であり、同じく小型、軽量に
形成される脈拍イヤーセンサの検出部2に何等問題無く
取り付けることができ、振動を正確に検出することがで
きる。
The shock sensor constructed as described above is formed to have a height of, for example, 1.2 mm, a length of 6.4 mm, and a width of 2.6 mm, and is very small and lightweight. The sensor can be attached to the detecting section 2 of the sensor without any problem, and the vibration can be accurately detected.

【0016】また本発明の加速度センサは、図3のショ
ックセンサに限らず、同様の作用、効果を奏する他のセ
ンサを用いても良い。
The acceleration sensor of the present invention is not limited to the shock sensor shown in FIG. 3, but may use another sensor having the same operation and effect.

【0017】[0017]

【発明の効果】以上のように本発明によれば、被検者の
耳たぶを貫通する光の透過率に基づいて脈拍検出信号を
得る脈拍検出部を有し、被検者の脈拍を測定する脈拍イ
ヤーセンサにおいて、前記脈拍検出部に設けられ、振動
を検出する加速度センサと、前記脈拍検出部の脈拍検出
信号から前記加速度センサの振動検出信号を差し引く差
動部とを備え、不要振動成分を取り除いた脈拍測定信号
を得るようにしたので、次のような優れた効果が得られ
る。
As described above, according to the present invention, there is provided a pulse detector for obtaining a pulse detection signal based on the transmittance of light passing through the earlobe of the subject, and the pulse of the subject is measured. In a pulse ear sensor, the pulse detection unit is provided with an acceleration sensor that detects vibration, and a differential unit that subtracts a vibration detection signal of the acceleration sensor from a pulse detection signal of the pulse detection unit, and includes an unnecessary vibration component. Since the removed pulse measurement signal is obtained, the following excellent effects can be obtained.

【0018】(1)脈拍検出信号中の振動成分を除去す
ることができるので、振動による脈拍の誤検出を防いで
正確な脈拍測定を行うことができる。
(1) Since a vibration component in a pulse detection signal can be removed, erroneous detection of a pulse due to vibration can be prevented and accurate pulse measurement can be performed.

【0019】(2)耳たぶに装着される検出部に小型、
軽量の加速度センサを付加した構成であるため、従来の
脈拍イヤーセンサと同一の雰囲気で使用することができ
るとともに、構成が極めて簡単である。
(2) The detection unit mounted on the earlobe is small,
Since the configuration is such that a lightweight acceleration sensor is added, it can be used in the same atmosphere as a conventional pulse ear sensor, and the configuration is extremely simple.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施の形態を示すブロック図。FIG. 1 is a block diagram illustrating an embodiment of the present invention.

【図2】(a)は脈拍イヤーセンサの脈拍検出信号の波
形図、(b)は加速度センサの振動検出信号の波形図。
2A is a waveform diagram of a pulse detection signal of a pulse ear sensor, and FIG. 2B is a waveform diagram of a vibration detection signal of an acceleration sensor.

【図3】本発明の実施例を示し、(a)はショックセン
サの検出原理を示す説明図、(b)はショックセンサの
斜視図。
3A and 3B show an embodiment of the present invention, wherein FIG. 3A is an explanatory diagram showing the principle of detection of a shock sensor, and FIG. 3B is a perspective view of the shock sensor.

【符号の説明】[Explanation of symbols]

1…耳たぶ 2…脈拍イヤーセンサの検出部 3a…発光素子 3b…受光素子 4…加速度センサ 5…アンプ 6…A/D変換器 7…マイクロコンピュータ 7a…差動部 21a,21b…圧電素子 21…バイモルフ型圧電セラミック 22…ケース DESCRIPTION OF SYMBOLS 1 ... Earlobe 2 ... Detection part of a pulse ear sensor 3a ... Light emitting element 3b ... Light receiving element 4 ... Acceleration sensor 5 ... Amplifier 6 ... A / D converter 7 ... Microcomputer 7a ... Differential part 21a, 21b ... Piezoelectric element 21 ... Bimorph type piezoelectric ceramic 22 ... Case

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 被検者の耳たぶを貫通する光の透過率に
基づいて脈拍検出信号を得る脈拍検出部を有し、被検者
の脈拍を測定する脈拍イヤーセンサにおいて、 前記脈拍検出部に設けられ、振動を検出する加速度セン
サと、 前記脈拍検出部の脈拍検出信号から前記加速度センサの
振動検出信号を差し引く差動部とを備え、 不要振動成分を取り除いた脈拍測定信号を得ることを特
徴とする脈拍イヤーセンサ。
1. A pulse ear sensor for measuring a pulse of a subject having a pulse detection unit for obtaining a pulse detection signal based on a transmittance of light passing through an earlobe of the subject, wherein the pulse detection unit An acceleration sensor that detects vibration, and a differential unit that subtracts the vibration detection signal of the acceleration sensor from the pulse detection signal of the pulse detection unit, and obtains a pulse measurement signal from which unnecessary vibration components have been removed. And pulse ear sensor.
JP9171372A 1997-06-27 1997-06-27 Vibrationproof pulse ear sensor Pending JPH119563A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9171372A JPH119563A (en) 1997-06-27 1997-06-27 Vibrationproof pulse ear sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9171372A JPH119563A (en) 1997-06-27 1997-06-27 Vibrationproof pulse ear sensor

Publications (1)

Publication Number Publication Date
JPH119563A true JPH119563A (en) 1999-01-19

Family

ID=15921968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9171372A Pending JPH119563A (en) 1997-06-27 1997-06-27 Vibrationproof pulse ear sensor

Country Status (1)

Country Link
JP (1) JPH119563A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001008909A (en) * 1999-06-28 2001-01-16 Omron Corp Electric sphygmomanometer
JP2006102262A (en) * 2004-10-06 2006-04-20 Terumo Corp Blood pressure measuring device, blood pressure measuring method, control program and computer-readable storage medium
KR100880803B1 (en) * 2006-12-19 2009-01-30 삼성전자주식회사 Apparatus for Measuring Biometric Information
CN110236510A (en) * 2019-04-29 2019-09-17 平顶山学院 A kind of fully-automatic intelligent athletic training system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001008909A (en) * 1999-06-28 2001-01-16 Omron Corp Electric sphygmomanometer
JP2006102262A (en) * 2004-10-06 2006-04-20 Terumo Corp Blood pressure measuring device, blood pressure measuring method, control program and computer-readable storage medium
JP4657666B2 (en) * 2004-10-06 2011-03-23 テルモ株式会社 Blood pressure measurement device
KR100880803B1 (en) * 2006-12-19 2009-01-30 삼성전자주식회사 Apparatus for Measuring Biometric Information
CN110236510A (en) * 2019-04-29 2019-09-17 平顶山学院 A kind of fully-automatic intelligent athletic training system

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