EN 61757-1-1:2017
(Main)Fibre optic sensors – Part 1-1: Strain measurement – Strain sensors based on fibre Bragg gratings
Fibre optic sensors – Part 1-1: Strain measurement – Strain sensors based on fibre Bragg gratings
IEC 61757-1-1:2016(E) defines detail specifications for fibre optic sensors using one or more fibre Bragg gratings (FBG) as the sensitive element for strain measurements. Generic specifications for fibre optic sensors are defined in IEC 61757-1:2012. This standard specifies the most important features and characteristics of a fibre optic sensor for strain measurements based on use of an FBG as the sensitive element, and defines the procedures for their determination. Furthermore, it specifies basic performance parameters and characteristics of the corresponding measuring instrument to read out the optical signal from the FBG. This standard refers to the measurement of static and dynamic strain values in a range of frequencies. A blank detail specification is provided in Annex B. Keywords: Bragg gratings (FBG), strain measurement of fibre optic sensors This publication is to be read in conjunction with IEC 61757-1:2012.
Lichtwellenleitersensoren - Teil 1-1: Dehnungsmessungen - Dehnungssensoren basierend auf Faser-Bragg-Gatter
Capteurs à fibres optiques – Partie 1-1: Mesure de déformation – Capteurs de déformation basés sur des réseaux de Bragg à fibres
IEC 61757-1-1:2016 définit des spécifications particulières pour des capteurs à fibres optiques utilisant un ou plusieurs réseaux de Bragg à fibres (FBG: fibre bragg grating) comme élément de détection pour les mesures de déformation. Des spécifications génériques pour les capteurs à fibres optiques sont définies dans l'IEC 61757-1:2012. Cette norme spécifie les caractéristiques les plus importantes d'un capteur à fibres optiques servant à mesurer des déformations en utilisant un réseau de Bragg à fibres comme élément de détection, et elle définit les procédures permettant de déterminer ces caractéristiques. Elle spécifie également les paramètres et les caractéristiques des performances de base de l'appareil utilisé pour mesurer le signal optique provenant du FBG. La présente norme porte sur la mesure des valeurs de déformations statiques et dynamiques sur une plage de fréquences. Une spécification particulière-cadre est fournie à l'Annexe B. La présente Norme internationale doit être utilisée conjointement avec l'IEC 61757-1:2012.
Optična zaznavala - 2-1. del: Merjenje deformacij - Zaznavala deformacij na podlagi vlakenskih braggovih rešetk (IEC 61757-1-1:2016)
Ta del standarda IEC 61757 določa podrobne specifikacije za optična zaznavala, ki uporabljajo eno ali več vlakenskih Braggovih rešetk (FBG) kot občutljiv element za merjenje deformacij. Splošne specifikacije za optična zaznavala so določene v standardu IEC 61757-1:2012.
Ta standard določa najpomembnejše značilnosti in lastnosti optičnih zaznaval za merjenje deformacij na podlagi uporabe vlakenske Braggove rešetke kot občutljivega elementa ter opredeljuje postopke za določanje deformacij. Določa tudi osnovne parametre delovanja in lastnosti ustreznega merilnega instrumenta za zajemanje optičnega signala vlakenske Braggove rešetke. Ta standard obravnava merjenje statičnih in dinamičnih vrednosti deformacij v različnih frekvencah.
Dodatek B vsebuje okvirno podrobno specifikacijo.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Fibre optic sensors - Part 2-1: Strain measurement - Strain sensors based on fibre Bragg gratings (IEC 61757-1-1:2016)33.180.99YODNQDOther fibre optic equipmentICS:Ta slovenski standard je istoveten z:EN 61757-1-1:2017SIST EN 61757-1-1:2017en01-maj-2017SIST EN 61757-1-1:2017SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 61757-1-1
February 2017 ICS 33.180.99
English Version
Fibre optic sensors - Part 1-1: Strain measurement - Strain sensors based on fibre Bragg gratings (IEC 61757-1-1:2016)
Capteurs à fibres optiques - Partie 1-1: Mesure de déformation - Capteurs de déformation basés sur des réseaux de Bragg à fibres (IEC 61757-1-1:2016)
LWL¬-Sensoren - Teil 1-1: Zugmessungen - Zugsensoren basierend auf Faser-Bragg-Gatter (IEC 61757-1-1:2016) This European Standard was approved by CENELEC on 2016-03-31. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17,
B-1000 Brussels © 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 61757-1-1:2017 E SIST EN 61757-1-1:2017
The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2017-08-17 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2020-02-17
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.
This publication is to be read in conjunction with EN 61757-1:2012.
Endorsement notice The text of the International Standard IEC 61757-1-1:2016 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60793-1-30 NOTE Harmonized as EN 60793-1-30. IEC 60793-1-31 NOTE Harmonized as EN 60793-1-31. IEC 60793-1-33 NOTE Harmonized as EN 60793-1-33. ISO 527-4 NOTE Harmonized as EN ISO 527-4. ISO 7500-1 NOTE Harmonized as EN ISO 7500-1. ISO 14125 NOTE Harmonized as EN ISO 14125.
Annex ZA (normative)
Normative references to international publications with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu.
Publication Year Title EN/HD Year IEC 60050 series
International Electrotechnical Vocabulary_- Part_102: Mathematics_- General concepts and linear algebra - series
IEC 60068-2 series
Environmental testing -- Part 2: Tests EN 60068-2 series
IEC 60793-2 -
Optical fibres - Part 2: Product specifications - General EN 60793-2 -
IEC 60874-1 -
Fibre optic interconnecting devices and passive components - Connectors for optical fibres and cables -- Part 1: Generic specification EN 60874-1 -
IEC 61300-2 series
Fibre optic interconnecting devices and passive components - Basic test and measurement procedures -- Part 2-1: Tests - Vibration (sinusoidal) - series
IEC 61757-1 2012
Fibre optic sensors -- Part 1: Generic specification EN 61757-1 2012
IEC 62129-1 -
Calibration of wavelength/optical frequency measurement instruments - Part 1: Optical spectrum analyzers EN 62129-1 -
IEC 62129-2 -
Calibration of wavelength/optical frequency measurement instruments -- Part 2: Michelson interferometer single wavelength meters EN 62129-2 -
IEC/TR 61931 -
Fibre optic - Terminology - -
IEC/TS 62129-3 -
Calibration of wavelength/optical frequency measurement instruments - Part 3: Optical frequency meters using optical frequency combs - -
ISO/IEC Guide 99 -
International vocabulary of metrology - Basic and general concepts and associated terms (VIM) - -
IEC 61757-1-1 Edition 1.0 2016-02 INTERNATIONAL STANDARD
Fibre optic sensors –
Part 1-1: Strain measurement – Strain sensors based on fibre Bragg gratings
INTERNATIONAL ELECTROTECHNICAL COMMISSION
ICS 33.180.99
ISBN 978-2-8322-3188-3
– 2 – IEC 61757-1-1:2016 © IEC 2016 CONTENTS FOREWORD . 5 INTRODUCTION . 7 1 Scope . 8 2 Normative references. 8 3 Terms and definitions . 9 4 Symbols . 13 5 Structure and characteristics . 14 5.1 Fibre Bragg grating (FBG) . 14 5.2 FBG strain sensor configuration. 18 5.3 Measuring point and installation . 18 5.4 Gauge length . 19 5.5 Strain and reference strain . 19 5.6 Reference wavelength . 19 5.7 Stability behaviour . 20 5.7.1 Drift and creep . 20 5.7.2 Shape stability of the Bragg grating peak . 20 5.7.3 Hysteresis . 20 5.8 Test specimen . 20 5.9 Indication of the measured values . 21 5.10 Zero point related measurement . 21 5.11 Non-zero point related measurement . 21 5.12 Production set . 21 5.13 FBG strain sensor standard type . 21 5.14 FBG strain sensor series . 21 6 Features and characteristics to be reported . 21 6.1 Construction details and geometrical dimensions . 21 6.2 Configuration of the FBG strain sensor . 22 6.3 Temperature and humidity range . 22 6.4 Connecting requirement . 22 7 Features and characteristics to be measured . 22 7.1 Sampling and statistical evaluation . 22 7.1.1 Sampling . 22 7.1.2 Random sampling . 22 7.1.3 Type testing . 22 7.1.4 Series testing . 22 7.1.5 Individual sample testing . 23 7.1.6 Reporting the measuring result . 23 7.1.7 Sample conditioning . 23 7.1.8 Ambient test conditions . 23 7.1.9 Required type of test for individual characteristics . 23 7.2 Bragg wavelength B . 24 7.2.1 General . 24 7.2.2 Measuring procedure . 24 7.2.3 Evaluation . 25 7.2.4 Reporting . 25 SIST EN 61757-1-1:2017
IEC 61757-1-1:2016 © IEC 2016 – 3 – 7.3 FBG spectral width . 25 7.3.1 Measuring procedure . 25 7.3.2 Evaluation . 25 7.3.3 Reporting . 25 7.4 FBG reflectivity . 25 7.4.1 Measuring procedure . 25 7.4.2 Evaluation . 26 7.4.3 Reporting . 26 7.5 FBG Strain sensitivity . 26 7.5.1 General . 26 7.5.2 Tensile test set-up . 27 7.5.3 Measuring procedure tensile test . 27 7.5.4 Evaluation . 28 7.5.5 Reporting . 28 7.6 Gauge factor k . 28 7.6.1 General . 28 7.6.2 Bending test set-up . 29 7.6.3 Measurement procedure . 31 7.6.4 Evaluation . 32 7.6.5 Reporting . 32 7.7 Maximum strain range at room temperature . 32 7.7.1 General . 32 7.7.2 Test set-up . 32 7.7.3 Measuring procedure . 33 7.7.4 Evaluation . 33 7.7.5 Reporting . 33 7.8 Fatigue behaviour .
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