JPH0532083Y2 - - Google Patents
Info
- Publication number
- JPH0532083Y2 JPH0532083Y2 JP17419087U JP17419087U JPH0532083Y2 JP H0532083 Y2 JPH0532083 Y2 JP H0532083Y2 JP 17419087 U JP17419087 U JP 17419087U JP 17419087 U JP17419087 U JP 17419087U JP H0532083 Y2 JPH0532083 Y2 JP H0532083Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- sensor
- finger
- receiving element
- light emitting
- 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 - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 25
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 230000036772 blood pressure Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000033748 Device issues Diseases 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Description
【考案の詳細な説明】
［産業上の利用分野］
この考案は生体光センサに関するものであり、
特に、指の一方の側から他方の側へ光を透過さ
せ、この透過光の上記指による吸収の大きさを検
出する、生体光センサに関するものである。[Detailed description of the invention] [Industrial application field] This invention relates to a biological optical sensor.
In particular, the present invention relates to a biological optical sensor that transmits light from one side of a finger to the other side and detects the amount of absorption of the transmitted light by the finger.
［従来の技術］
指先の皮膚の一方の側から他方の側へ光を透過
させ、この透過光に指の血流の量による透過率
（反射率）の変化を検出し、その信号の処理の後、
計算することにより、脈拍およ血圧等の生体情報
を測定する生体光センサが知られている。[Prior art] Light is transmitted from one side of the skin of the fingertip to the other side, and changes in transmittance (reflectance) depending on the amount of blood flow in the finger are detected in this transmitted light, and the processing of the signal is performed. rear,
BACKGROUND ART Biological optical sensors are known that measure biological information such as pulse rate and blood pressure by calculation.
第３Ａ図は、従来の生体光センサの構成を示し
た平面図であり、第３Ｂ図は第３Ａ図における
Ｂ−Ｂ断面図である。 FIG. 3A is a plan view showing the configuration of a conventional biological optical sensor, and FIG. 3B is a sectional view taken along line BB in FIG. 3A.
これらの図において、１は屈撓自在な帯状のフ
イルム基板である。フイルム基板１には、その長
手方向に間隔を隔てて発光素子２と受光素子３が
配置されている。発光素子２と受光素子３はそれ
ぞれリード線４に接続されている。そして、この
光センサは指に装着するために、テープ５に張付
けられる。 In these figures, 1 is a flexible strip-shaped film substrate. A light emitting element 2 and a light receiving element 3 are arranged on the film substrate 1 at intervals in its longitudinal direction. The light emitting element 2 and the light receiving element 3 are each connected to a lead wire 4. This optical sensor is attached to a tape 5 in order to be attached to a finger.
第３Ｃ図は光センサ６を指に装着したときの断
面図である。第３Ｃ図において、７は指である。
長手方向に間隔を隔てて配置された発光素子２と
受光素子３を備えたフイルム基板１は、指の先端
部７ａで湾曲するように指７の長さ方向に巻付け
られる。さらに、その上から同じ方向にテープ５
を貼付けて、生体光センサ６を指７にしつかりと
固定する。 FIG. 3C is a sectional view when the optical sensor 6 is attached to a finger. In FIG. 3C, 7 is a finger.
A film substrate 1 including a light emitting element 2 and a light receiving element 3 arranged at intervals in the longitudinal direction is wound in the length direction of the finger 7 so as to curve at the tip 7a of the finger. Then tape 5 in the same direction from above.
to firmly fix the biological optical sensor 6 to the finger 7.
電力を入力すると、リード線４に電気が流れ、
発光素子２が発光する。発光により生じた光は指
７内を透過して、発光素子３に照射する。受光素
子３はこの光を受けて、リード線４、コネクタ
（図示せず）を介して信号処理本体（図示せず）
に信号を送る。信号処理本体はこのときの透過率
の変化を検知し、その信号を処理し、その後計算
することにより、脈拍および血圧等の生体情報を
測定する。 When power is input, electricity flows through lead wire 4,
The light emitting element 2 emits light. The light generated by the emission passes through the finger 7 and irradiates the light emitting element 3. The light receiving element 3 receives this light and connects it to a signal processing body (not shown) via a lead wire 4 and a connector (not shown).
send a signal to. The signal processing main body detects the change in transmittance at this time, processes the signal, and then performs calculations to measure biological information such as pulse rate and blood pressure.
［考案が解決しようとする問題点］
従来の光センサは以上のように構成されてい
る。しかしながら、第３Ｃ図に示すように、発光
素子２と受光素子３が指７を介して正確な対向関
係にあるときには何ら問題はないが、第４Ａ図
（第４Ｂ図は第４Ａ図の断面図）に示すように、
発光素子２と受光素子３が正確な対向関係にない
ときには問題点が生じる。すなわち、発光素子２
と受光素子３が正確な対向関係にないときには、
発光素子２の出力を上げたり、受光素子３の増幅
率を上げたりする必要があつた。しかしながら、
発光素子２の出力を高くすると、発光素子２の発
熱による熱傷が問題となり、発光素子３の増幅率
を上げるとＳ／Ｎが悪くなり、当該生体光センサ
の精度は減少する。いずれの問題点も、生体光セ
ンサを指７に装着する際の、発光素子２と受光素
子３の位置関係を、正確に把握する手段が設けら
れていないことに起因する。[Problems to be solved by the invention] A conventional optical sensor is configured as described above. However, as shown in FIG. 3C, there is no problem when the light emitting element 2 and the light receiving element 3 are in an accurate opposing relationship with the finger 7 in between. ), as shown in
A problem arises when the light emitting element 2 and the light receiving element 3 are not in a precise opposing relationship. That is, the light emitting element 2
When the light-receiving element 3 and the light-receiving element 3 are not in an accurate facing relationship,
It was necessary to increase the output of the light emitting element 2 and the amplification factor of the light receiving element 3. however,
When the output of the light emitting element 2 is increased, burns due to the heat generated by the light emitting element 2 become a problem, and when the amplification factor of the light emitting element 3 is increased, the S/N becomes worse and the accuracy of the biological optical sensor decreases. Both problems are caused by the fact that there is no means for accurately grasping the positional relationship between the light emitting element 2 and the light receiving element 3 when the biological optical sensor is attached to the finger 7.
この考案はこのような問題点を解決するために
なされたもので、発光素子２と受光素子３を正確
に対向させて、指に装着することのできる、生体
光センサを提供することを目的とする。 This invention was made to solve these problems, and the purpose is to provide a biological optical sensor that can be worn on a finger with the light emitting element 2 and the light receiving element 3 facing each other accurately. do.
［問題点を解決するための手段］
この考案は、長手方向に間隔を隔てて設けられ
た発光素子と受光素子を備えた帯状のものであ
り、発光素子と受光素子を互いに対向させて指に
固定するために、指の先端部で湾曲するように指
の長さ方向に巻付け、当該生体光センサを指に固
定し、上記指の一方の側から他方の側へ光を透過
させ、この透過光の上記指による吸収の大きさの
変化を検出する生体光センサに係るものである。[Means for solving the problem] This invention is a belt-shaped device that includes a light-emitting element and a light-receiving element that are spaced apart in the longitudinal direction. In order to fix it, the biological optical sensor is fixed to the finger by wrapping it in the length direction of the finger so as to curve it at the tip of the finger, and the light is transmitted from one side of the finger to the other side. The present invention relates to a biological optical sensor that detects a change in the magnitude of absorption of transmitted light by the finger.
そして、上記問題点を解決するために、当該生
体光センサは、上記受光素子が中央に位置するよ
うに、該受光素子の両側に、上記発光素子からの
光を受光し、その受光量を検出する第１のセンサ
と第２のセンサとが設けられている。当該光セン
サは、さらに、上記第１のセンサと上記第２のセ
ンサに接続され、該第１のセンサの受光量と該第
２のセンサの受光量とを比較する比較手段を備え
る。 In order to solve the above problem, the biological optical sensor receives light from the light-emitting elements on both sides of the light-receiving element so that the light-receiving element is located in the center, and detects the amount of the received light. A first sensor and a second sensor are provided. The optical sensor further includes comparison means that is connected to the first sensor and the second sensor and compares the amount of light received by the first sensor and the amount of light received by the second sensor.
［作用］
当該生体光センサによれば、受光素子が中央に
位置するように、該受光素子の両側に設けられ、
発光素子からの光を受光し、その受光量を検出す
る第１のセンサと第２のセンサとを備え、さらに
上記第１のセンサと上記第２のセンサに接続さ
れ、該第１のセンサの受光量と該第２のセンサの
受光量を比較する比較手段を備えるので、上記第
１のセンサの受光量と上記第２のセンサの受光量
との差によつて、上記発光素子と上記受光素子と
の対向ずれを検出することができる。[Function] According to the biological optical sensor, the light receiving element is provided on both sides of the light receiving element so that the light receiving element is located in the center,
It includes a first sensor and a second sensor that receive light from a light emitting element and detect the amount of the received light, and is further connected to the first sensor and the second sensor, and is connected to the first sensor. Since the comparison means is provided for comparing the amount of light received by the second sensor and the amount of light received by the second sensor, the difference between the amount of light received by the first sensor and the amount of light received by the second sensor determines whether the light emitting element It is possible to detect misalignment with the element.
［実施例］
以下、この考案の一実施例を図について説明す
る。[Example] Hereinafter, an example of this invention will be described with reference to the drawings.
第１図は、この考案の一実施例に係る生体光セ
ンサの構成を示した平面図である。可撓性フイル
ム基板１の上に発光部１２と受光部１３が長手方
向に間隔を隔てて設けられている。発光部１２は
２つの発光ダイオード２ａ，２ｂからなつてい
る。受光部１３は、受光素子３と、４個の対向ず
れ検出センサA1，A2，A3，A4からなつている。
対向ずれ検出センサA1，A2は１対となつて、指
の長さ方向の対向ずれを検出する。対向ずれ検出
センサA3，A4は１対となつて、指の幅方向の対
向ずれを検出する。発光ダイオード２ａ，２ｂ
と、受光素子３と、４個の対向ずれ検出センサ
A1，A2，A3，A4はリード線に接続され、コネク
タ１０を介して本体２０に連絡される。 FIG. 1 is a plan view showing the configuration of a biological optical sensor according to an embodiment of this invention. A light emitting section 12 and a light receiving section 13 are provided on a flexible film substrate 1 at intervals in the longitudinal direction. The light emitting section 12 consists of two light emitting diodes 2a and 2b. The light receiving section 13 includes a light receiving element 3 and four opposing displacement detection sensors A 1 , A 2 , A 3 , and A 4 .
The opposing deviation detection sensors A 1 and A 2 form a pair to detect opposing deviations in the length direction of the fingers. The opposing deviation detection sensors A 3 and A 4 form a pair to detect opposing deviations in the width direction of the fingers. Light emitting diodes 2a, 2b
, a light receiving element 3, and four opposing misalignment detection sensors.
A 1 , A 2 , A 3 , and A 4 are connected to lead wires and communicated with the main body 20 via the connector 10 .
第２図は本考案の動作を説明するための回路図
を示したものである。図において、１３は受光部
を表わしている。受光素子３の指の長さ方向に対
向ずれ検出センサA1，A2が配置されており、指
の幅方向に対向ずれ検出センサA3，A4が配置さ
れている。対向ずれ検出センサA1から流れる電
流（IA1）と、対向ずれ検出センサA2から流れる
電流（IA2）は第１の比較手段であるICコンパレ
ータ３０によつて比較される。この比較値はIS1
で表わされる。指の長さ方向の対向ずれは、対向
ずれ検出センサA3，A4に流れる電流（それぞれ
IA3，IA4）を第２の比較手段であるICコンパレー
タ４０によつて比較される。この比較値はIS2で
表わされる。受光素子３からは通常の透過率を検
出する出力IBが得られる。 FIG. 2 shows a circuit diagram for explaining the operation of the present invention. In the figure, 13 represents a light receiving section. Opposing displacement detection sensors A 1 and A 2 are arranged in the length direction of the finger of the light receiving element 3, and opposed displacement detection sensors A 3 and A 4 are arranged in the width direction of the finger. The current (I A1 ) flowing from the opposing deviation detection sensor A 1 and the current (I A2 ) flowing from the opposing deviation detection sensor A 2 are compared by the IC comparator 30, which is a first comparing means. This comparison value is I S1
It is expressed as The misalignment in the length direction of the fingers is determined by the current flowing through the misalignment detection sensors A 3 and A 4 (respectively).
I A3 , I A4 ) are compared by an IC comparator 40, which is a second comparing means. This comparison value is denoted IS2 . The light receiving element 3 provides an output I B for detecting normal transmittance.
なお、本明細書において、対向ずれ検出手段と
は対向ずれ検出センサと比較手段を備えたものを
いう。 Note that, in this specification, the opposing deviation detection means is one that includes an opposing deviation detection sensor and a comparison means.
IS1とIS2は、発光素子と受光素子の対向ずれが
生じると、次式に示す不等式を成立させる。本式
において、IS0は所定の設定電流を表わしている。 I S1 and I S2 satisfy the following inequality when the light emitting element and the light receiving element are misaligned. In this equation, I S0 represents a predetermined set current.
｜IS1｜≧IS0 ｜IS2｜≧IS0
このようにして対向ずれを検出し、このとき装
置がアラームを出すようにすると、このアラーム
によつて、操作者はセンサ装着をやり直して、こ
の対向ずれを修正することができる。 ｜I S1 ｜≧I S0 ｜I S2 ｜≧I S0 If the misalignment is detected in this way and the device issues an alarm at this time, this alarm will cause the operator to reinstall the sensor and This misalignment can be corrected.
なお、上記実施例では、２個のセンサを含む対
向ずれ検出手段を２対配置した場合について説明
したが、この考案はこれに限られるものでなく、
１対であつても相当の効果を実現する。 In the above embodiment, a case has been described in which two pairs of opposing displacement detection means including two sensors are arranged, but the invention is not limited to this.
A considerable effect can be achieved even with just one pair.
また、上記実施例では発光ダイオードを２個設
けた場合について説明したが、この考案はこれに
限られるものでなく、１個であつてもよいし、３
個以上であつてもよい。 Further, in the above embodiment, the case where two light emitting diodes were provided was explained, but this invention is not limited to this, and it may be one light emitting diode, or three light emitting diodes.
There may be more than one.
［考案の効果］
以上説明したとおり、この考案によれば、受光
素子が中央に位置するように、該受光素子の両側
に設けられ、発光素子からの光を受光し、その受
光量を検出する第１のセンサと第２のセンサとを
備え、さらに、上記第１のセンサと上記第２のセ
ンサに接続され、該第１のセンサの受光量と該第
２のセンサの受光量を比較する比較手段を備えて
いるので、上記第１のセンサの受光量と上記第２
のセンサの受光量との差によつて、上記発光素子
と上記受光素子との対向ずれを検出することがで
きる。その結果、操作者は、この対向ずれを即座
に感知して、センサ装着をやり直し、対向ずれを
修正し、発光素子と受光素子を指を介して互いに
正確に対向させることができる。したがつて、発
光素子と受光素子が正確な対向関係にないときに
生じる問題点、すなわち、発光素子の発熱による
熱傷の発生、また受光素子の増幅によるＳ／Ｎの
悪化による精度減少という問題点は解消される。
その結果、発熱による熱傷はなくなり、さらに当
該生体光センサの精度が向上する結果、当該生体
光センサへの信頼性は高まる。[Effect of the invention] As explained above, according to this invention, the light receiving element is provided on both sides of the light receiving element so that the light receiving element is located in the center, receives light from the light emitting element, and detects the amount of the received light. comprising a first sensor and a second sensor, further connected to the first sensor and the second sensor, and comparing the amount of light received by the first sensor and the amount of light received by the second sensor. Since the comparison means is provided, the amount of light received by the first sensor and the second sensor are
Based on the difference between the amount of light received by the sensor and the amount of light received by the sensor, a misalignment between the light emitting element and the light receiving element can be detected. As a result, the operator can immediately sense this misalignment, reinstall the sensor, correct the misalignment, and accurately align the light-emitting element and the light-receiving element with each other using their fingers. Therefore, there are problems that occur when the light emitting element and the light receiving element are not in an accurate opposing relationship, namely, burns occur due to the heat generated by the light emitting element, and accuracy decreases due to deterioration of S/N due to amplification of the light receiving element. will be resolved.
As a result, burns caused by heat generation are eliminated, and as a result, the accuracy of the biological optical sensor is improved, and the reliability of the biological optical sensor is increased.
第１図はこの考案の一実施例の構成を示す平面
図である。第２図はこの考案の一実施例を実現す
るための回路図である。第３Ａ図および第３Ｂ図
は従来の生体光センサの構成を示す図であり、第
３Ｃ図は従来の生体光センサを指に装着したとき
の図である。第４Ａ図および第４Ｂ図は従来の生
体光センサを指に装着するときの問題点を示した
図である。
図において、１は可撓性フイルム基板、２ａ，
２ｂは発光ダイオード、３は受光素子、１２は発
光部、１３は受光部、A1，A2，A3，A4は対向ず
れ検出センサ、３０は第１のICコンパレータ、
４０は第２のICコンパレータである。なお、各
図中、同一符号は同一または相当部分を示す。
FIG. 1 is a plan view showing the configuration of an embodiment of this invention. FIG. 2 is a circuit diagram for realizing an embodiment of this invention. 3A and 3B are diagrams showing the configuration of a conventional biological optical sensor, and FIG. 3C is a diagram of the conventional biological optical sensor attached to a finger. FIGS. 4A and 4B are diagrams showing problems when attaching a conventional biological optical sensor to a finger. In the figure, 1 is a flexible film substrate, 2a,
2b is a light emitting diode, 3 is a light receiving element, 12 is a light emitting part, 13 is a light receiving part, A 1 , A 2 , A 3 , A 4 are opposing misalignment detection sensors, 30 is a first IC comparator,
40 is a second IC comparator. In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (1)
受光素子を備えた帯状のものであり、 発光素子と受光素子を互いに対向させて指に固
定するために、指の先端部で湾曲するように指の
長さ方向に巻付け、当該生体光センサを指に固定
し、 前記指の一方の側から他方の側へ光を透過さ
せ、この透過光の前記指による吸収の大きさの変
換を検出する生体光センサにおいて、 前記受光素子が中央に位置するように、該受光
素子の両側に設けられ、前記発光素子からの光を
受光し、その受光量を検出する第１のセンサと第
２のセンサと、 前記第１のセンサと前記第２のセンサに接続さ
れ、該第１のセンサの受光量と該第２のセンサの
受光量を比較する比較手段とを、さらに備えたこ
とを特徴とする、生体光センサ。[Claims for Utility Model Registration] It is a belt-shaped device having a light-emitting element and a light-receiving element provided at intervals in the longitudinal direction. The biological optical sensor is fixed to the finger by wrapping it in the length direction of the finger so as to curve at the tip of the finger, and transmitting light from one side of the finger to the other side. In a biological optical sensor that detects a change in the magnitude of absorption, the sensor is provided on both sides of the light-receiving element so that the light-receiving element is located in the center, receives light from the light-emitting element, and detects the amount of the received light. a first sensor, a second sensor, and a comparison means connected to the first sensor and the second sensor and for comparing the amount of light received by the first sensor and the amount of light received by the second sensor. A biological optical sensor further comprising:
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17419087U JPH0532083Y2 (en) | 1987-11-13 | 1987-11-13 | |
| EP88117854A EP0315040B1 (en) | 1987-11-02 | 1988-10-26 | Bio-photosensor |
| DE8888117854T DE3877894T2 (en) | 1987-11-02 | 1988-10-26 | ORGANIC LIGHT MEASURING PROBE. |
| US07/264,105 US4974591A (en) | 1987-11-02 | 1988-10-28 | Bio-photosensor |
| KR1019880014123A KR920000733B1 (en) | 1987-11-02 | 1988-10-29 | Bio-photosensor |
| CN 88107502 CN1029364C (en) | 1987-11-02 | 1988-11-01 | Photosensor for organizms |
| CA000582049A CA1323074C (en) | 1987-11-02 | 1988-11-02 | Bio-photosensor |
| SU914895426A RU2096992C1 (en) | 1987-11-02 | 1991-05-26 | Photosensor device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17419087U JPH0532083Y2 (en) | 1987-11-13 | 1987-11-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0177709U JPH0177709U (en) | 1989-05-25 |
| JPH0532083Y2 true JPH0532083Y2 (en) | 1993-08-18 |
Family
ID=31466062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17419087U Expired - Lifetime JPH0532083Y2 (en) | 1987-11-02 | 1987-11-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0532083Y2 (en) |
-
1987
- 1987-11-13 JP JP17419087U patent/JPH0532083Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0177709U (en) | 1989-05-25 |
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