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IEC 61757-1-4-ed.1.0
Fibre optic sensors - Part 1-4: Strain measurement - Distributed sensing based on Rayleigh scattering
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STANDARD published on 16.12.2025
The information about the standard:
Designation standards: IEC 61757-1-4-ed.1.0
Publication date standards: 16.12.2025
SKU: NS-1253493
The number of pages: 29
Approximate weight : 87 g (0.19 lbs)
Country: International technical standard
Category: Technical standards IEC
The category - similar standards:
Annotation of standard text IEC 61757-1-4-ed.1.0 :
IEC 61757-1-4:2025 defines the terminology, structure, and measurement methods of distributed fibre optic sensors for absolute strain measurements based on spectral correlation analysis of Rayleigh backscattering signatures in single-mode fibres, where the fibre is the distributed strain measurement element in a measurement range from about 10 m to tens of km. This document also applies to hybrid sensor systems that combine the advantages of Brillouin and Rayleigh backscattering effects to obtain optimal measurement quality. This document also specifies the most important features and performance parameters of these distributed fibre optic strain sensors defines procedures for measuring these features and parameters. This part of IEC 61757 does not apply to point measurements or to dynamic strain measurements. Distributed strain measurements using Brillouin scattering in single-mode fibres are covered in IEC 61757-1-2. The most relevant applications of this strain measurement technique are listed in Annex A, while Annex B provides a short description of the underlying measurement principle. IEC 61757-1-4:2025 definit la terminologie, la structure et les methodes de mesure de capteurs a fibre optique repartis pour mesurer la deformation absolue basee sur l’analyse de correlation spectrale des signatures de retrodiffusion de Rayleigh dans les fibres unimodales, ou la fibre est l’element de mesure de deformation repartie dans une etendue de mesure comprise entre environ 10 m et des dizaines de km. Le present document s’applique egalement aux systemes de capteurs hybrides qui combinent les avantages des effets de retrodiffusion Brillouin et Rayleigh pour obtenir une qualite de mesure optimale. Le present document specifie egalement les caracteristiques et les parametres de performance les plus importants de ces capteurs de deformation fibroniques repartis et definit les procedures de mesure de ces caracteristiques et parametres. La presente partie de l’IEC 61757 ne s’applique pas aux mesures ponctuelles ni aux mesures de deformation dynamique. Les mesures de deformation reparties utilisant la diffusion Brillouin dans les fibres unimodales sont traitees dans l’IEC 61757-1-2. Les applications les plus pertinentes de cette technique de mesure de deformation sont enumerees dans l’Annexe A informative, et l’Annexe B informative fournit une breve description du principe de mesure sous-jacent.
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