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SLOVENSKI STANDARD
01-november-2021
Optični senzorji - 5-1. del: Meritve nagiba - Nagibni senzorji na podlagi
optovlakenskih Braggovih rešetk (IEC 61757-5-1:2021)
Fibre optic sensors - Part 5-1: Tilt measurement - Tilt sensors based on fibre Bragg
gratings (IEC 61757-5-1:2021)
Lichtwellenleitersensoren – Teil 5-1: Neigungsmessung - Neigungssensoren auf Basis
von Faser-Bragg-Gittern (IEC 61757-5-1:2021)
Capteurs fibroniques - Partie 5-1: Mesure d’inclinaison - Capteurs d’inclinaison basés sur
des réseaux de Bragg à fibres (IEC 61757-5-1:2021)
Ta slovenski standard je istoveten z: EN IEC 61757-5-1:2021
ICS:
33.180.99 Druga oprema za optična Other fibre optic equipment
vlakna
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 61757-5-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2021
ICS 33.180.99
English Version
Fibre optic sensors - Part 5-1: Tilt measurement - Tilt sensors
based on fibre Bragg gratings
(IEC 61757-5-1:2021)
Capteurs fibroniques - Partie 5-1: Mesure d'inclinaison - Lichtwellenleitersensoren - Teil 5-1: Neigungsmessung -
Capteurs d'inclinaison basés sur des réseaux de Bragg à Neigungssensoren auf Basis von Faser-Bragg-Gittern
fibres (IEC 61757-5-1:2021)
(IEC 61757-5-1:2021)
This European Standard was approved by CENELEC on 2021-08-11. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61757-5-1:2021 E
European foreword
The text of document 86C/1699/CDV, future edition 1 of IEC 61757-5-1, prepared by SC 86C “Fibre
optic systems and active devices” of IEC/TC 86 “Fibre optics” was submitted to the IEC-CENELEC
parallel vote and approved by CENELEC as EN IEC 61757-5-1:2021.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2022–05–11
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024–08–11
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61757-5-1:2021 was approved by CENELEC as a
European Standard without any modification.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where 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 - -
(IEV)
IEC 60068-2 series Environmental testing - Part 2X: Tests EN 60068-2 series
IEC 61300-2 series Fibre optic interconnecting devices and EN 61300-2 series
passive components - Basic test and
measurement procedures - Part 2X: Tests
IEC 61754 series Fibre optic interconnecting devices and EN 61754 series
passive components - Fibre optic
connector interfaces
IEC 61757 - Fibre optic sensors - Generic specification EN IEC 61757 -
IEC 61757-1-1 2020 Fibre optic sensors - Part 1–1: Strain EN IEC 61757-1-1 2020
measurement - Strain sensors based on
fibre Bragg gratings
IEC 62129-1 - Calibration of wavelength/optical frequency EN 62129-1 -
measurement instruments - Part 1: Optical
spectrum analyzers
IEC 62129-2 - Calibration of wavelength/optical frequency EN 62129-2 -
measurement instruments - Part 2:
Michelson interferometer single
wavelength meters
IEC 62129-3 - Calibration of wavelength/optical frequency EN IEC 62129-3 -
measurement instruments - Part 3:Optical
frequency meters internally referenced to a
frequency comb
ISO/IEC Guide 98-3 - Uncertainty of measurement - Part 3: - -
Guide to the expression of uncertainty in
measurement (GUM:1995)
IEC 61757-5-1
Edition 1.0 2021-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fibre optic sensors –
Part 5-1: Tilt measurement – Tilt sensors based on fibre Bragg gratings
Capteurs fibroniques –
Partie 5-1: Mesure d’inclinaison – Capteurs d’inclinaison basés sur des réseaux
de Bragg à fibres
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.180.99 ISBN 978-2-8322-9949-4
– 2 – IEC 61757-5-1:2021 © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Symbols . 8
5 Structure and characteristics . 9
5.1 Fibre Bragg grating (FBG) . 9
5.2 FBG tilt sensor configuration . 9
5.3 Reference wavelength . 11
5.4 Stability behaviour . 11
5.4.1 Drift and creep . 11
5.4.2 Hysteresis . 12
5.5 Test specimen . 12
5.6 Indication of the measured values . 12
5.7 Zero point related measurement . 12
5.8 Non-zero point related measurement . 12
5.9 Production set . 12
5.10 FBG tilt sensor standard type . 13
5.11 FBG tilt sensor series . 13
6 Features and characteristics to be measured . 13
6.1 Sampling and statistical evaluation . 13
6.1.1 Sampling . 13
6.1.2 Reporting the measuring result . 13
6.1.3 Sample conditioning . 14
6.1.4 Ambient test conditions . 14
6.1.5 Required type of test for individual characteristics . 14
6.2 Bragg wavelength λ . 14
Β
6.2.1 General . 14
6.2.2 Measuring procedure . 15
6.2.3 Evaluation . 15
6.2.4 Reporting . 15
6.3 FBG spectral width. 15
6.3.1 Measuring procedure . 15
6.3.2 Evaluation . 15
6.3.3 Reporting . 15
6.4 FBG reflectivity . 16
6.4.1 Measuring procedure . 16
6.4.2 Evaluation . 16
6.4.3 Reporting . 16
6.5 Tilt measurement . 16
6.5.1 Test set-up . 16
6.5.2 Measuring procedure . 17
6.5.3 Calibration and evaluation . 18
6.6 Gauge factor κ . 19
θ
6.7 Temperature and humidity ranges . 19
IEC 61757-5-1:2021 © IEC 2021 – 3 –
6.7.1 General . 19
6.7.2 Measuring procedure . 19
6.7.3 Evaluation . 20
6.7.4 Reporting . 20
7 Features and characteristics to be reported . 20
7.1 Construction details . 20
7.2 Configuration of the FBG tilt sensor . 20
7.3 Temperature and humidity range . 20
7.4 Connecting requirement . 20
8 Recommendations for use of FBG measuring instruments . 20
Figure 1 – Examples for measuring single axis tilt changes . 10
Figure 2 – Examples of Bragg wavelength change caused by tilt . 10
Figure 3 – Example of tilt sensor using FBG (schematic diagram) . 11
Figure 4 – Schematic diagram of tilt measurement system .
...