JPS5516550A - Information detection system by photo transmitter - Google Patents

Information detection system by photo transmitter

Info

Publication number
JPS5516550A
JPS5516550A JP8910278A JP8910278A JPS5516550A JP S5516550 A JPS5516550 A JP S5516550A JP 8910278 A JP8910278 A JP 8910278A JP 8910278 A JP8910278 A JP 8910278A JP S5516550 A JPS5516550 A JP S5516550A
Authority
JP
Japan
Prior art keywords
photo
detection
transmission line
terminal
transmitter
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
Application number
JP8910278A
Other languages
Japanese (ja)
Other versions
JPS6233540B2 (en
Inventor
Masamitsu Tokuda
Mikio Kokayu
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.)
Furukawa Electric Co Ltd
Nippon Telegraph and Telephone Corp
Original Assignee
Furukawa Electric Co Ltd
Nippon Telegraph and Telephone 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 Furukawa Electric Co Ltd, Nippon Telegraph and Telephone Corp filed Critical Furukawa Electric Co Ltd
Priority to JP8910278A priority Critical patent/JPS5516550A/en
Publication of JPS5516550A publication Critical patent/JPS5516550A/en
Publication of JPS6233540B2 publication Critical patent/JPS6233540B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Measuring Volume Flow (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To improve response by preventing external influence of a noise, etc., by providing several detection parts to hairpin-shaped photo transmitters parallel to a photo transmission line, in an information detection system for light leakage detection of the photo transmission line. CONSTITUTION:Beltlike area L between initial part 2 and terminal part 3 of photo transmission line 1 is divided into detection sections l1 to ln, in parallel to which photo transmitter 4 bent at bending part 5 is arranged, and detection parts 101 to 10n are provided corresponding to the detection sections. At one terminal of photo transmitter 4, photo-pulse generating part 6 is provided and at the other terminal, photo detecting part 7 is provided. Each detection part, provided with light branch unit 11 at its going path 8 and photocoupler 12 at returning path 9, consists of a pair of units 11 and 12 and space 13 where light can leak.
JP8910278A 1978-07-21 1978-07-21 Information detection system by photo transmitter Granted JPS5516550A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8910278A JPS5516550A (en) 1978-07-21 1978-07-21 Information detection system by photo transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8910278A JPS5516550A (en) 1978-07-21 1978-07-21 Information detection system by photo transmitter

Publications (2)

Publication Number Publication Date
JPS5516550A true JPS5516550A (en) 1980-02-05
JPS6233540B2 JPS6233540B2 (en) 1987-07-21

Family

ID=13961515

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8910278A Granted JPS5516550A (en) 1978-07-21 1978-07-21 Information detection system by photo transmitter

Country Status (1)

Country Link
JP (1) JPS5516550A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5975602A (en) * 1982-10-25 1984-04-28 矢崎総業株式会社 Semiconductor moisture sensor
US4537209A (en) * 1982-10-15 1985-08-27 Olympus Optical Co., Ltd. Device for cleaning endoscopes
JPS61258135A (en) * 1985-05-13 1986-11-15 Electric Power Dev Co Ltd Of cable leaking oil detecting method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5337494A (en) * 1976-09-18 1978-04-06 Denki Kagaku Keiki Kk Apparatus for detecting oil and so on
JPS53148488A (en) * 1977-05-30 1978-12-25 Furukawa Electric Co Ltd:The Detecting method of leaking points of fluid conveying paths and apparatus for the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5337494A (en) * 1976-09-18 1978-04-06 Denki Kagaku Keiki Kk Apparatus for detecting oil and so on
JPS53148488A (en) * 1977-05-30 1978-12-25 Furukawa Electric Co Ltd:The Detecting method of leaking points of fluid conveying paths and apparatus for the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4537209A (en) * 1982-10-15 1985-08-27 Olympus Optical Co., Ltd. Device for cleaning endoscopes
JPS5975602A (en) * 1982-10-25 1984-04-28 矢崎総業株式会社 Semiconductor moisture sensor
JPH0155561B2 (en) * 1982-10-25 1989-11-27 Yazaki Corp
JPS61258135A (en) * 1985-05-13 1986-11-15 Electric Power Dev Co Ltd Of cable leaking oil detecting method

Also Published As

Publication number Publication date
JPS6233540B2 (en) 1987-07-21

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