CONFERENCE PROCEEDINGS
Advanced Search >
Home > Proceedings > Volume 5758 > Article
Translator Disclaimer
16 May 2005 An improved fiber optic strain sensor for gas tank monitoring with rf subcarrier phase and I&Q demodulation techniques
Graham Thursby; Fengzhong Dong; Brian Culshaw; Guido Massaro; Branko Glisic; Daniele Inaudi
Author Affiliations +
Proceedings Volume 5758, Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems; (2005) https://doi.org/10.1117/12.605523
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2005, San Diego, California, United States
Abstract
With increased interest in the use of compressed gas as a vehicle fuel, attention has been focussed on the safety issues surrounding the tanks used to store the fuel. Currently it is necessary to remove the tanks from the vehicle in order to inspect them, which entails a considerable cost in manpower and takes the vehicle being out of service. We have been developing a sensor scheme that can provide in situ monitoring of the tanks condition. This entails bonding optical fibre sensors to the tank and using them to measure the strains experienced by the tank during pressurisation. If the tank is significantly damaged, then the tank will expand in a distorted manner. We therefore measure the strain characteristics of a healthy tank and use them as a reference for future measurements. The method of strain measurement is the well established rf subcarrier phase detection technique, however in this application the changes in optical power caused by microbending of the fibres during pressurisation produces inaccuracies. In order to overcome this problem we use both in-phase and quadrature mixing and then take the ratio of the outputs to obtain a value of arctangent that is independent of amplitude.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Graham Thursby, Fengzhong Dong, Brian Culshaw, Guido Massaro, Branko Glisic, and Daniele Inaudi "An improved fiber optic strain sensor for gas tank monitoring with rf subcarrier phase and I&Q demodulation techniques", Proc. SPIE 5758, Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems, (16 May 2005); https://doi.org/10.1117/12.605523
PROCEEDINGS
 9 PAGES
DOWNLOAD PDF SAVE TO MY LIBRARY
SHARE
GET CITATION
< Previous Article
|
Next Article >
Advertisement
Advertisement
KEYWORDS
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top