Title :
Online compensation and calibration of a chromatically addressed, photoelastic strain sensor with optical fibre transmission
Author :
Humphries, J. ; Harrison, J.A. ; Spencer, J.W. ; Jones, G.R.
Author_Institution :
Dept. of Electr. Eng. & Electron., Liverpool Univ., UK
fDate :
5/1/1996 12:00:00 AM
Abstract :
An experimental study has been undertaken into the effects of changes in the spectral content of broadband light used for addressing a photoelastic strain sensor upon the calibration curve of such a transducer. A simple analysis is presented to show how compensation could be provided for random system drifts which produce such spectral variations. This has led to the design of a prototype photoelastic strain sensor with inbuilt compensation means. Some initial results are presented to demonstrate the performance of the transducer
Keywords :
calibration; compensation; fibre optic sensors; intelligent sensors; optical modulation; photoelasticity; physical instrumentation control; strain gauges; chromatically addressed; chromaticity calibration curve; compensated transducer unit; fibre optic strain gauge; inbuilt compensation; intelligent operation; on-line compensation; optical fibre transmission; photoelastic strain sensor; prototype sensor design; random system drifts; spectral content of broadband light; structural monitoring;
Journal_Title :
Science, Measurement and Technology, IEE Proceedings -
DOI :
10.1049/ip-smt:19960352
