IT1255073B - Procedimento e apparecchio per la misura assoluta e indipendente di grandezze meccaniche e termiche che agiscono contemporaneamente su una fibra ottica - Google Patents

Procedimento e apparecchio per la misura assoluta e indipendente di grandezze meccaniche e termiche che agiscono contemporaneamente su una fibra ottica

Info

Publication number
IT1255073B
IT1255073B ITMI920782A ITMI920782A IT1255073B IT 1255073 B IT1255073 B IT 1255073B IT MI920782 A ITMI920782 A IT MI920782A IT MI920782 A ITMI920782 A IT MI920782A IT 1255073 B IT1255073 B IT 1255073B
Authority
IT
Italy
Prior art keywords
optical fiber
absolute
measurement
amounts
act
Prior art date
Application number
ITMI920782A
Other languages
English (en)
Inventor
Valeria Gusmeroli
Mario Martinelli
Original Assignee
Cise Spa
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 Cise Spa filed Critical Cise Spa
Priority to ITMI920782A priority Critical patent/IT1255073B/it
Publication of ITMI920782A0 publication Critical patent/ITMI920782A0/it
Priority to DE69311188T priority patent/DE69311188T2/de
Priority to EP93200875A priority patent/EP0564034B1/en
Publication of ITMI920782A1 publication Critical patent/ITMI920782A1/it
Application granted granted Critical
Publication of IT1255073B publication Critical patent/IT1255073B/it

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • G01L11/02—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means
    • G01L11/025—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by optical means using a pressure-sensitive optical fibre
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
    • G01D5/35303—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using a reference fibre, e.g. interferometric devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L1/00—Measuring force or stress, in general
    • G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
    • G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Transform (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

Il procedimento e l'apparecchio che lo attua prevedono l'effettuazione di una misura di dispersione di una fibra ottica sensore (3). Tale misura è preferibilmente realizzata mediante una prima e una seconda misura di cammino ottico, prefe-ribilmente di tipo interferometrico non incrementale, del segnale in uscita dalla fibra ottica sensore (3), rispettivamente centrata su una prima e una seconda lunghezza d'onda, e una combinazione dei risultati delle suddette misure in modo da ri-cavare due valori distinti indicativi delle grandezze fisiche sotto misura. (figura 1)
ITMI920782A 1992-04-01 1992-04-01 Procedimento e apparecchio per la misura assoluta e indipendente di grandezze meccaniche e termiche che agiscono contemporaneamente su una fibra ottica IT1255073B (it)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ITMI920782A IT1255073B (it) 1992-04-01 1992-04-01 Procedimento e apparecchio per la misura assoluta e indipendente di grandezze meccaniche e termiche che agiscono contemporaneamente su una fibra ottica
DE69311188T DE69311188T2 (de) 1992-04-01 1993-03-26 Verfahren und Anordnung zur absoluten und unabhängigen Messung von mechanischen und thermischen Grössen, die gleichzeitig an einer optischen Faser angreifen
EP93200875A EP0564034B1 (en) 1992-04-01 1993-03-26 Process and apparatus for the absolute and independent measurement of mechanical and thermal magnitudes that act simultaneously on an optical fibre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI920782A IT1255073B (it) 1992-04-01 1992-04-01 Procedimento e apparecchio per la misura assoluta e indipendente di grandezze meccaniche e termiche che agiscono contemporaneamente su una fibra ottica

Publications (3)

Publication Number Publication Date
ITMI920782A0 ITMI920782A0 (it) 1992-04-01
ITMI920782A1 ITMI920782A1 (it) 1993-10-01
IT1255073B true IT1255073B (it) 1995-10-18

Family

ID=11362733

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI920782A IT1255073B (it) 1992-04-01 1992-04-01 Procedimento e apparecchio per la misura assoluta e indipendente di grandezze meccaniche e termiche che agiscono contemporaneamente su una fibra ottica

Country Status (3)

Country Link
EP (1) EP0564034B1 (it)
DE (1) DE69311188T2 (it)
IT (1) IT1255073B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9314487D0 (en) * 1993-07-12 1993-08-25 Secr Defence Sensor system
GB2311600A (en) * 1996-03-29 1997-10-01 Secr Defence Optic Fibre Interferometric sensor
CN114894120B (zh) * 2022-05-26 2024-03-19 安徽大学 一种基于双波长的可调量程表面形貌测量装置及测量方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE377549T1 (de) * 1989-01-03 1990-11-08 Marcos Y. Southbridge Mass. Kleinerman Fernmessung physikalischer variablen mit faseroptischen systemen.
CA2055790A1 (en) * 1991-01-04 1992-07-05 Victor Vali System for accurately detecting changes in temperature and pressure

Also Published As

Publication number Publication date
DE69311188T2 (de) 1997-11-06
ITMI920782A1 (it) 1993-10-01
ITMI920782A0 (it) 1992-04-01
EP0564034A3 (en) 1993-11-10
EP0564034A2 (en) 1993-10-06
EP0564034B1 (en) 1997-06-04
DE69311188D1 (de) 1997-07-10

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970423