JPS5557125A - Information detecting system via optical transmitter - Google Patents

Information detecting system via optical transmitter

Info

Publication number
JPS5557125A
JPS5557125A JP13033778A JP13033778A JPS5557125A JP S5557125 A JPS5557125 A JP S5557125A JP 13033778 A JP13033778 A JP 13033778A JP 13033778 A JP13033778 A JP 13033778A JP S5557125 A JPS5557125 A JP S5557125A
Authority
JP
Japan
Prior art keywords
detection
information medium
leaked substance
optical
change
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
JP13033778A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6211298B2 (enrdf_load_stackoverflow
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 JP13033778A priority Critical patent/JPS5557125A/ja
Publication of JPS5557125A publication Critical patent/JPS5557125A/ja
Publication of JPS6211298B2 publication Critical patent/JPS6211298B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/042—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid
    • G01M3/045—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means
    • G01M3/047—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means with photo-electrical detection means, e.g. using optical fibres

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Optical Communication System (AREA)
JP13033778A 1978-10-23 1978-10-23 Information detecting system via optical transmitter Granted JPS5557125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13033778A JPS5557125A (en) 1978-10-23 1978-10-23 Information detecting system via optical transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13033778A JPS5557125A (en) 1978-10-23 1978-10-23 Information detecting system via optical transmitter

Publications (2)

Publication Number Publication Date
JPS5557125A true JPS5557125A (en) 1980-04-26
JPS6211298B2 JPS6211298B2 (enrdf_load_stackoverflow) 1987-03-11

Family

ID=15031948

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13033778A Granted JPS5557125A (en) 1978-10-23 1978-10-23 Information detecting system via optical transmitter

Country Status (1)

Country Link
JP (1) JPS5557125A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0751386A3 (en) * 1992-04-10 1997-01-08 Norscan Instruments, Ltd. A fibre optic cable monitoring system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0751386A3 (en) * 1992-04-10 1997-01-08 Norscan Instruments, Ltd. A fibre optic cable monitoring system

Also Published As

Publication number Publication date
JPS6211298B2 (enrdf_load_stackoverflow) 1987-03-11

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