JPH04188048A - Moisture detector - Google Patents
Moisture detectorInfo
- Publication number
- JPH04188048A JPH04188048A JP31936690A JP31936690A JPH04188048A JP H04188048 A JPH04188048 A JP H04188048A JP 31936690 A JP31936690 A JP 31936690A JP 31936690 A JP31936690 A JP 31936690A JP H04188048 A JPH04188048 A JP H04188048A
- Authority
- JP
- Japan
- Prior art keywords
- moisture
- light
- optical fiber
- fiber sensor
- photodiode
- 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
Links
- 239000013307 optical fiber Substances 0.000 claims abstract description 25
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 19
- 230000003287 optical effect Effects 0.000 abstract description 5
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000027939 micturition Effects 0.000 description 8
- 230000013872 defecation Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000035900 sweating Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 210000004243 sweat Anatomy 0.000 description 3
- 206010027627 Miliaria Diseases 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 208000017520 skin disease Diseases 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013308 plastic optical fiber Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
Description
【発明の詳細な説明】 （イ）産業上の利用分野 本発明は水分検出の分野で利用され之。[Detailed description of the invention] (b) Industrial application field The present invention is used in the field of moisture detection.
本発明は、水分検出器に関し、とくに光ファイバセンサ
を使い、乳幼児、老人、病人等による排便、排尿、汗な
どに適用可能な水分検出器に関する。The present invention relates to a moisture detector, and more particularly to a moisture detector that uses an optical fiber sensor and is applicable to defecation, urination, sweat, etc. by infants, the elderly, sick people, etc.
（ロ）従来技術
自分でトイレに行けない乳幼児、老人、病人等は一般に
紙おむつなどおむつを使用している。(B) Prior Art Infants, the elderly, sick people, etc. who cannot go to the toilet by themselves generally use diapers such as disposable diapers.
排尿すると、その水分と反応しておむつ外表面の色が変
わり、排尿を表示させる方法がある。When a person urinates, the outer surface of the diaper reacts with water and changes color to indicate urination.
排便や汗を検知し表示する方式はない、 つまり、従来
例の検出方式は、特定の成分と反応させるという化学反
応を伴っている。There is no method to detect and display defecation or sweat; in other words, conventional detection methods involve chemical reactions that involve reacting with specific components.
（ハ）発明が解決しようとするｙＡ題
前記した排尿の検出では、排尿していても紙おむつの外
表面を直接見ないと、排尿の有無を確認できない。(c) Problem to be Solved by the Invention In the above-mentioned detection of urination, it is impossible to confirm whether or not urination is occurring unless one directly looks at the outer surface of the paper diaper, even if the user is urinating.
乳幼児、老人、病人等が排便、排尿、発汗などを他人に
知らすことができずに、その状態が放置されていると、
本人は不快感のままどうしようもなく、しかもこれがあ
せも、かぶれ、ただれ等皮膚病の原因になる。 また、
発汗ではかぜの原因になる。If infants, the elderly, the sick, etc. are unable to notify others of their defecation, urination, sweating, etc., and are left untreated,
The person remains helpless in the discomfort, and this can lead to skin diseases such as heat rash, rashes, and sores. Also,
Sweating can cause a cold.
本発明の目的は、自分でトイレに行けない乳幼児、老人
、病人などが使用するおむつに適用でき、排便、排尿、
発汗などに生ずる水分を化学的試剤を使わずに検出でき
る、水分検出器を提供することである。The object of the present invention is that it can be applied to diapers used by infants, the elderly, sick people, etc. who cannot go to the toilet by themselves, and can prevent defecation, urination,
An object of the present invention is to provide a moisture detector capable of detecting moisture generated due to sweating, etc., without using chemical reagents.
（ニ）ｔｉｎを解決するための手段
前記した目的は、光ファイバのコアを包被するクラフト
又は外被保護シースの一部又は全部を除去した軸部分に
ついて、この軸部分を略Ｕ字形に曲折して形成されたＵ
字状曲折部及び一方のコア端部を受光部とし他方のコア
端部を発光部とした両端部を有する光ファイバセンサと
、該受光部に対する光源と、光ファイバセンサの受光量
と該Ｕ字形曲折部を介して反射照射した発光量間の変化
を検出する回路とを具備することにより、達成される。(d) Means for solving the problem of tin The above purpose is to bend the shaft portion into a substantially U-shape from which part or all of the craft or outer protective sheath surrounding the core of the optical fiber has been removed. U formed by
An optical fiber sensor having a letter-shaped bent part and both ends with one core end as a light receiving part and the other core end as a light emitting part, a light source for the light receiving part, the amount of light received by the optical fiber sensor, and the U-shape This is achieved by including a circuit that detects a change in the amount of light emitted reflected through the bending portion.
（ホ）作用
光ファイバセンサを使用し、このセシサのＵ字型検出部
を水分が発生しそうなところに配置させ、発生した際に
反射光の変化により水分を検知し、ブザーや表示灯で水
分の有無を表示する。(E) Function Using an optical fiber sensor, the U-shaped detection part of this sesisa is placed in a place where moisture is likely to be generated, and when moisture is generated, it detects moisture by a change in reflected light, and a buzzer or indicator light is used to detect moisture. Displays the presence or absence of.
排便、排尿、発汗などを検知し、他人に知らせることか
できるので、早く遺切な処置ができ、皮膚病やかぜを予
防できる。 また本人の不快な時間を短かくできる。It can detect defecation, urination, sweating, etc. and notify others, allowing prompt treatment and prevention of skin diseases and colds. It can also shorten the amount of time the person feels uncomfortable.
（へ）実施例 本発明の好適な実施例は図面に基づいて説明される。(f) Example A preferred embodiment of the invention will be explained based on the drawings.
第１図はその１実施例を示した回路図であり、第２図は
その外観斜視図である。FIG. 1 is a circuit diagram showing one embodiment, and FIG. 2 is a perspective view of its appearance.
ＬＥＤ駆動回路３の出力で発光ダイオード（ＬＥＤ）４
を発光させ、光ファイバセンサ２を通してフォトダイオ
ード５に反射光が戻ってくる。A light emitting diode (LED) 4 is output from the LED drive circuit 3.
The reflected light returns to the photodiode 5 through the optical fiber sensor 2.
ＬＥＤ４、光ファイバセンサ２、フォトダイオード５は
光コネクタ６により光学的に結合している。The LED 4, optical fiber sensor 2, and photodiode 5 are optically coupled by an optical connector 6.
光ファイバセンサ２からの反射光の信号は、信号検出・
比較回路７で増幅し、あらかじめ設定された値と比較し
、水分の有無信号を表示灯駆動回路８とブザー駆動回路
９に送り、水分があれば、表示灯１０を点灯する、と同
時にブザー１１を鳴らす。The reflected light signal from the optical fiber sensor 2 is detected by the signal detection/
The comparator circuit 7 amplifies the signal, compares it with a preset value, and sends a moisture presence/absence signal to the indicator light drive circuit 8 and buzzer drive circuit 9. If moisture is present, the indicator light 10 is turned on and the buzzer 11 is activated at the same time. sound.
ブザー音が不要な時はブザー切替スイッチ１２をＯＦＦ
にする。When the buzzer sound is not needed, turn off the buzzer selector switch 12.
Make it.
各回路素子への電源は、電池１３、電源スィッチ１４を
通して供給される。Power to each circuit element is supplied through a battery 13 and a power switch 14.
第３図は、例えば直径１ｍｍの単線プラスチック光ファ
イバを示す断面を、（Ａ）は垂直断面でまた（Ｂ）は縦
断面でそれぞれ示している。FIG. 3 shows cross sections of a single plastic optical fiber having a diameter of, for example, 1 mm, with (A) a vertical cross section and (B) a longitudinal cross section.
コア１５はクラッド（低屈折率の物質）１６で周囲が包
まれ、さらに保護シース１７で外被されている。 この
保護シース１７はある一定の長さしを除去して露出した
コア部分を、第４図のようにＵ字形に１８０度曲折して
検出部Ｓが形成される。 この曲折後、保護シースを残
した部分で折り返した部分を、熱収縮チューブ１８等で
固定するのが望ましい。The core 15 is surrounded by a cladding (low refractive index material) 16 and is further covered with a protective sheath 17. A detection portion S is formed by removing a certain length of the protective sheath 17 and bending the exposed core portion 180 degrees into a U-shape as shown in FIG. After this bending, it is desirable to fix the folded portion with the protective sheath remaining with a heat shrink tube 18 or the like.
光ファイバセンサ２は、そのＵ字形検出部Ｓに水分が付
着しない（空気中）ときは、第５図のように光はＵ字形
部でも反射して一方から他方に戻るが、第６図のように
検出部Ｓの先端など一部に水分が付着すると、コア内の
光は外部へ射出するから第１図に示すフォトダイオード
５に戻る光量が減少し、この減少を測定することにより
水分の有無を検知できる。In the optical fiber sensor 2, when moisture does not adhere to the U-shaped detection part S (in the air), the light is also reflected at the U-shaped part and returns from one side to the other as shown in Fig. 5, but as shown in Fig. 6. When moisture adheres to a part of the detection part S, such as the tip, the light inside the core is emitted to the outside, so the amount of light returning to the photodiode 5 shown in FIG. 1 decreases, and by measuring this decrease, it can be determined that the moisture The presence or absence can be detected.
第７図は本発明による水分検出器１をおむつに適用した
場合の斜視図であり、排便、排尿を検出するために、光
ファイバセンサ２をおむつ１９の内表面又は内部に入れ
て使用する。FIG. 7 is a perspective view of the moisture detector 1 according to the present invention applied to a diaper, in which the optical fiber sensor 2 is placed on or inside the diaper 19 to detect defecation and urination.
第８図は発汗を検出する通用部材を示しており、光ファ
イバセンサ２の検出部Ｓを背中や胸の皮膚に接触させて
、粘着テープ２０で固定して使用する。FIG. 8 shows a general-purpose member for detecting perspiration, which is used by bringing the detection part S of the optical fiber sensor 2 into contact with the skin of the back or chest and fixing it with an adhesive tape 20.
なお、１本の長い光ファイバを使って、Ｕ字形検出部Ｓ
を複数個間欠して設け、感度を増してもよい。In addition, using one long optical fiber, the U-shaped detection part S
A plurality of them may be provided intermittently to increase the sensitivity.
水分検出の動作は逆論理、つまり水分がないときに警報
を発するようにし、例えば植木鉢の土中に検出部を挿入
し、水分が少なべなれば警報を出すように構成してもよ
い。The moisture detection operation may be performed using reverse logic, that is, an alarm is issued when there is no moisture.For example, a detection unit may be inserted into the soil of a flowerpot, and an alarm may be issued when the moisture content is low.
また、複数本の光ファイバを使い、それぞれに複数個の
検出部を形成して、同時に複数箇所の水分を検出しても
よい。Alternatively, a plurality of optical fibers may be used and a plurality of detection sections may be formed in each of them to simultaneously detect moisture at a plurality of locations.
（ト）効果
光ファイバセンサを用いるので、水分検出位置を変えら
れ、フレキシブルで取扱いが容易、また光学式であり、
人体に使用しても感電の恐れがなく、安心して使用でき
る。(g) Effects Since an optical fiber sensor is used, the moisture detection position can be changed, it is flexible and easy to handle, and it is an optical type.
There is no risk of electric shock even when used on the human body, so it can be used with confidence.
第１図は本発明の１実施例を示した回路図、第２図はそ
の外観斜視図、第３図は本発明に用いられる光ファイバ
の垂直断面図と縦断面図、ｊｌ！４図は本発明による水
分検出部の例示図、第５図はそのコアを介して行われる
光の反射を例示した態様図、第６図は水分が存在する場
合の第５図同様図、１７図は本発明のおむつ適用例の斜
視図、第８図は本発明による発汗検出適用例の斜視図で
ある。
１は水分検出器、２は光ファイバセンサ、３はＬＥＤ駆
動回路、４と５はフォトダイオード、６は光コネクタ、
７は信号検出比較回路、８は表示灯駆動回路、９はブザ
ー駆動回路、１０は表示灯、１１はブザー、１２はブザ
ー切替スイッチ、１３は電池、１４は電源スィッチ、１
５は光ファイバのコア、１６はそのクララ下、１７はそ
の保護シース、１８は熱収縮チューブ、１９はおむつ、
２０は粘着テープ、ＳはＵ字形検出部である。
第１図
第３図
第２図 第７図
第４図 Ｆ５図 第６図FIG. 1 is a circuit diagram showing one embodiment of the present invention, FIG. 2 is an external perspective view thereof, and FIG. 3 is a vertical cross-sectional view and a longitudinal cross-sectional view of an optical fiber used in the present invention. 4 is an illustrative diagram of the moisture detection section according to the present invention, FIG. 5 is a diagram illustrating the reflection of light through the core, FIG. 6 is a diagram similar to FIG. 5 when moisture is present, and 17 FIG. 8 is a perspective view of an application example of a diaper according to the present invention, and FIG. 8 is a perspective view of an application example of sweat detection according to the invention. 1 is a moisture detector, 2 is an optical fiber sensor, 3 is an LED drive circuit, 4 and 5 are photodiodes, 6 is an optical connector,
7 is a signal detection comparison circuit, 8 is an indicator light drive circuit, 9 is a buzzer drive circuit, 10 is an indicator light, 11 is a buzzer, 12 is a buzzer changeover switch, 13 is a battery, 14 is a power switch, 1
5 is the core of the optical fiber, 16 is the lower part of the optical fiber, 17 is the protective sheath, 18 is the heat shrink tube, 19 is the diaper,
20 is an adhesive tape, and S is a U-shaped detection section. Figure 1 Figure 3 Figure 2 Figure 7 Figure 4 Figure F5 Figure 6
Claims (1)
シースの一部又は全部を除去した軸部分について、この
軸部分を略Ｕ字状に曲折して形成されたＵ字形曲折部及
び一方のコア端部を受光部とし他方のコア端部を発光部
とした両端部を有する光ファイバセンサと、該受光部に
対する発光源と、光ファイバセンサの受光量と該Ｕ字形
曲折部を介して反射照射した発光量間の変化を検出する
回路とを具備していることを特徴とする、水分検出器。1. Regarding the shaft portion from which part or all of the cladding or outer protective sheath covering the core of the optical fiber has been removed, the shaft portion is bent into a substantially U-shape, and one of the U-shaped bent portions is formed. An optical fiber sensor having both ends with a core end as a light receiving part and the other core end as a light emitting part, a light emitting source for the light receiving part, and an amount of light received by the optical fiber sensor and reflected through the U-shaped bent part. 1. A moisture detector, comprising: a circuit for detecting a change in the amount of emitted light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31936690A JPH04188048A (en) | 1990-11-21 | 1990-11-21 | Moisture detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31936690A JPH04188048A (en) | 1990-11-21 | 1990-11-21 | Moisture detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04188048A true JPH04188048A (en) | 1992-07-06 |
Family
ID=18109352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31936690A Pending JPH04188048A (en) | 1990-11-21 | 1990-11-21 | Moisture detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04188048A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11264795A (en) * | 1998-03-19 | 1999-09-28 | Sanyo Electric Co Ltd | Moisture sensing device for object to be inspected |
| JP2008241593A (en) * | 2007-03-28 | 2008-10-09 | Kao Corp | Probe for measuring total reflection-absorption spectrum |
| JP2012073226A (en) * | 2010-08-31 | 2012-04-12 | National Institute For Materials Science | Probe for fiber and manufacturing method of the same |
-
1990
- 1990-11-21 JP JP31936690A patent/JPH04188048A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11264795A (en) * | 1998-03-19 | 1999-09-28 | Sanyo Electric Co Ltd | Moisture sensing device for object to be inspected |
| JP2008241593A (en) * | 2007-03-28 | 2008-10-09 | Kao Corp | Probe for measuring total reflection-absorption spectrum |
| JP2012073226A (en) * | 2010-08-31 | 2012-04-12 | National Institute For Materials Science | Probe for fiber and manufacturing method of the same |
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