JPS5882627U - Reflective optical fiber sensor - Google Patents
Reflective optical fiber sensorInfo
- Publication number
- JPS5882627U JPS5882627U JP17917681U JP17917681U JPS5882627U JP S5882627 U JPS5882627 U JP S5882627U JP 17917681 U JP17917681 U JP 17917681U JP 17917681 U JP17917681 U JP 17917681U JP S5882627 U JPS5882627 U JP S5882627U
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- reflected light
- fiber sensor
- signal
- level corresponding
- 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
Landscapes
- Light Guides In General And Applications Therefor (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の反射形光ファイバセンサの構成例を示す
図、第２図は本考案による光フアイバセンサの一実施例
を示す構成図、第３図ａ ”−ｅは回路動作のタイミン
グを示す図、第４図ａにｄは参 ゛ −黒用の基準反
射手段の構成例を示す図、第５図は本考案による光フア
イバセンサの別の実施例を示す構成図である。
１・・・発光素子、２． ３． ３’、 ６・・・光
ファイバ、４・・・反射部材、５・・・光方向性結合器
、７・・・検出器、８．２７・・・比較回路、２１、・
・・パルス発生器、２２・・・参照°用基準反射手段、
２３・・・増幅器、２４′。
２６・・・サンプルホールド回路、２６・・・タイミン
グ回路、３１・・・半透明鏡、３２・・・分岐出力、３
３・・・反射手段。Fig. 1 is a diagram showing a configuration example of a conventional reflective optical fiber sensor, Fig. 2 is a configuration diagram showing an embodiment of an optical fiber sensor according to the present invention, and Fig. 3 a''-e shows the timing of circuit operation. Figures 4a and 4d are diagrams showing an example of the configuration of the reference reflecting means for black, and Figure 5 is a configuration diagram showing another embodiment of the optical fiber sensor according to the present invention.1. ...Light emitting element, 2. 3. 3', 6... Optical fiber, 4... Reflection member, 5... Optical directional coupler, 7... Detector, 8.27... Comparison circuit, 21,・
... Pulse generator, 22... Reference reflection means for reference °,
23...Amplifier, 24'. 26... Sample hold circuit, 26... Timing circuit, 31... Semi-transparent mirror, 32... Branch output, 3
3...Reflection means.
Claims (1)
アイバ伝送路とを有し、光ファイバの一部もしくは反対
端からの測定用反射光パルスを検′ 出する形成の光
フアイバセンサにおいて、前記光フアイバ伝送路の一部
に設けられた反射率一定の参照明基準反射手段と、検出
された光パルス信号から前記の参照用基準反射手段から
の基準反射光パルスに対応する信号レベルと前記測定用
反射光パルスに対応する信号レベルとを抽出して前記２
つの信号レベルを比較する回路手段とを有することを特
徴とする反射形光ファイバセンサ。An optical fiber sensor having a light source means for transmitting a narrow pulsed optical signal and an optical fiber transmission line, and configured to detect reflected light pulses for measurement from a part or the opposite end of the optical fiber. , a reference bright reference reflecting means with a constant reflectance provided in a part of the optical fiber transmission line, and a signal level corresponding to the reference reflected light pulse from the reference reference reflecting means from the detected optical pulse signal. The signal level corresponding to the measurement reflected light pulse is extracted and the signal level corresponding to the measurement reflected light pulse is extracted.
A reflective optical fiber sensor comprising circuit means for comparing two signal levels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17917681U JPS5882627U (en) | 1981-11-30 | 1981-11-30 | Reflective optical fiber sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17917681U JPS5882627U (en) | 1981-11-30 | 1981-11-30 | Reflective optical fiber sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5882627U true JPS5882627U (en) | 1983-06-04 |
Family
ID=29974633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17917681U Pending JPS5882627U (en) | 1981-11-30 | 1981-11-30 | Reflective optical fiber sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5882627U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6091220A (en) * | 1983-08-25 | 1985-05-22 | ザ・バブコックス・アンド・ウイルコックス・カンパニー | High and low position alarm device using optical fiber |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5175557A (en) * | 1974-12-26 | 1976-06-30 | Yokogawa Electric Works Ltd |
-
1981
- 1981-11-30 JP JP17917681U patent/JPS5882627U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5175557A (en) * | 1974-12-26 | 1976-06-30 | Yokogawa Electric Works Ltd |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6091220A (en) * | 1983-08-25 | 1985-05-22 | ザ・バブコックス・アンド・ウイルコックス・カンパニー | High and low position alarm device using optical fiber |
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