JPS60107804U - Abnormality monitoring device for underground objects - Google Patents
Abnormality monitoring device for underground objectsInfo
- Publication number
- JPS60107804U JPS60107804U JP19511883U JP19511883U JPS60107804U JP S60107804 U JPS60107804 U JP S60107804U JP 19511883 U JP19511883 U JP 19511883U JP 19511883 U JP19511883 U JP 19511883U JP S60107804 U JPS60107804 U JP S60107804U
- Authority
- JP
- Japan
- Prior art keywords
- abnormality monitoring
- optical fiber
- underground objects
- monitoring device
- line 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.)
- Granted
Links
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図及び第２図は、本考案のシステムにおけるライン
センサーの実施例を示す説明図、第３図は本考案のシス
テムの実施例を示す説明図である。
１．１１：螺旋状金属管、１，１２：光ファイバ、３，
１３：被覆層、４，１４，２４ニラインセンサー、２６
：発光素子、２７：受光素子、２８：時間微分回路、２
９：警報回路、３０：光パ ′ルス測定器。1 and 2 are explanatory diagrams showing an embodiment of the line sensor in the system of the present invention, and FIG. 3 is an explanatory diagram showing an embodiment of the system of the present invention. 1.11: Spiral metal tube, 1, 12: Optical fiber, 3,
13: Covering layer, 4, 14, 24 Ni line sensor, 26
: Light emitting element, 27: Light receiving element, 28: Time differentiator circuit, 2
9: Alarm circuit, 30: Optical pulse measuring device.
Claims (1)
一方端に発光素子を装え、他方端に受光素子を装え、該
受光素子には外力による前記光ファイバの伝送損失の時
間的変化を検出して警報を発生させる時間微分回路、警
報回路、及び、外力の発生した位置を検出する光パルス
測定器を連結させる構成としたシステムにおいて、前記
ラインセンサーは螺旋状金属管に前記光ファイバを添設
させ、その外周に柔軟な被覆層を施した構造であること
を特徴とする地中埋設物の異常監視システム。A line sensor equipped with an optical fiber, equipped with a light emitting element at one end of the optical fiber and a light receiving element at the other end, the light receiving element detects temporal changes in transmission loss of the optical fiber due to external force. In the system, the line sensor is configured to connect a time differentiator circuit that generates an alarm, an alarm circuit, and an optical pulse measuring device that detects the position where an external force is generated. An abnormality monitoring system for underground objects characterized by having a structure in which a flexible covering layer is applied to the outer periphery of the abnormality monitoring system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19511883U JPS60107804U (en) | 1983-12-19 | 1983-12-19 | Abnormality monitoring device for underground objects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19511883U JPS60107804U (en) | 1983-12-19 | 1983-12-19 | Abnormality monitoring device for underground objects |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60107804U true JPS60107804U (en) | 1985-07-22 |
| JPH0435798Y2 JPH0435798Y2 (en) | 1992-08-25 |
Family
ID=30752615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19511883U Granted JPS60107804U (en) | 1983-12-19 | 1983-12-19 | Abnormality monitoring device for underground objects |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60107804U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1678541A1 (en) * | 2003-10-23 | 2006-07-12 | Prysmian Cavi e Sistemi Energia S.r.l. | Telecommunication optical cable for gas pipeline application having built-in leakage detecting device |
-
1983
- 1983-12-19 JP JP19511883U patent/JPS60107804U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1678541A1 (en) * | 2003-10-23 | 2006-07-12 | Prysmian Cavi e Sistemi Energia S.r.l. | Telecommunication optical cable for gas pipeline application having built-in leakage detecting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0435798Y2 (en) | 1992-08-25 |
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