JPS6474832A - Optical fiber sensor device - Google Patents

Optical fiber sensor device

Info

Publication number
JPS6474832A
JPS6474832A JP62231174A JP23117487A JPS6474832A JP S6474832 A JPS6474832 A JP S6474832A JP 62231174 A JP62231174 A JP 62231174A JP 23117487 A JP23117487 A JP 23117487A JP S6474832 A JPS6474832 A JP S6474832A
Authority
JP
Japan
Prior art keywords
optical
signal
optical fiber
sensors
scattered light
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
JP62231174A
Other languages
Japanese (ja)
Other versions
JPH0618350B2 (en
Inventor
Harushige Urata
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP62231174A priority Critical patent/JPH0618350B2/en
Publication of JPS6474832A publication Critical patent/JPS6474832A/en
Publication of JPH0618350B2 publication Critical patent/JPH0618350B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Arrangements For Transmission Of Measured Signals (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To realize photometory for plural objects, by delivering a light pulse signal to an optical sensor terminal in which plural optical sensors and optical delay lines are connected alternately and in series via an optical fiber, and detecting rearward scattered light from the sensor terminal. CONSTITUTION:In the optical sensor terminal 3, optical sensors 11-1(n+1) are connected alternately and in series via the optical delay lines 21-2n which delay the optical pulse signals Lt, respectively. An electrical pulse signal St is supplied from a control monitor part 4 to an electrooptical converter 5, and a converted signal Lt is radiated to the optical fiber 2 and the terminal 3 via a directional coupler 6. According to the progression of the signal Lt, the rear scattered light Lr is supplied from each of the optical fiber 2, the sensors 11-1(n+1), and the delay lines 21-2n to a rear scattered light measurement system 1. The monitor part 4 detects the change of a receiving power in an electrical signal Sr arriving at a time when the only time corresponding to the sensors 11-1(n+1) elapses after delivering the signal St, thereby, it is possible to perform the photometory for the plural objects.
JP62231174A 1987-09-17 1987-09-17 Optical fiber sensor device Expired - Lifetime JPH0618350B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62231174A JPH0618350B2 (en) 1987-09-17 1987-09-17 Optical fiber sensor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62231174A JPH0618350B2 (en) 1987-09-17 1987-09-17 Optical fiber sensor device

Publications (2)

Publication Number Publication Date
JPS6474832A true JPS6474832A (en) 1989-03-20
JPH0618350B2 JPH0618350B2 (en) 1994-03-09

Family

ID=16919477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62231174A Expired - Lifetime JPH0618350B2 (en) 1987-09-17 1987-09-17 Optical fiber sensor device

Country Status (1)

Country Link
JP (1) JPH0618350B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0818506A (en) * 1994-06-27 1996-01-19 Nec Corp Remote supervisory equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0818506A (en) * 1994-06-27 1996-01-19 Nec Corp Remote supervisory equipment

Also Published As

Publication number Publication date
JPH0618350B2 (en) 1994-03-09

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