Title :
A novel distributed fiber optic strain sensor
Author :
García, M.J. ; Ortega, J.A. ; Chávez, J.A. ; Salazar, J. ; Turó, A.
Author_Institution :
Dept. d´´Eng. Electron., Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
The theory of operation of a fiber optic-based strain sensor system, suitable for long structures, is described. The proposed sensor design is composed of several hundreds of sections separated by reflectors in order to monitor structures of more than one kilometer of length. A quasi distributed sensor structure accomplishes best condition monitoring where each section of the sensor integrates the measured magnitude, obtaining a value associated to the average shortening or elongation in this section. Tools for the design of the optical reflectors of the sensor are also provided, including a study of the optical noise due to multireflection within the system
Keywords :
condition monitoring; distributed sensors; fibre optic sensors; intelligent sensors; intelligent structures; optical noise; optical time-domain reflectometry; strain sensors; OTDR measurement; SNR; condition monitoring; distributed fiber optic strain sensor; embedded sensor; equalised system; long structures; multireflection; optical noise; optical reflectors design; quasi distributed sensor structure; rope monitoring; Capacitive sensors; Condition monitoring; Inspection; Mechanical variables measurement; Optical fiber sensors; Optical fibers; Optical noise; Optical sensors; Sensor systems; Strain measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE
Conference_Location :
Budapest
Print_ISBN :
0-7803-6646-8
DOI :
10.1109/IMTC.2001.928862
