DocumentCode :
1300262
Title :
Optical Fiber Accelerometer System for Structural Dynamic Monitoring
Author :
Antunes, Paulo Fernando Da Costa ; Lima, Hugo F T ; Alberto, Nélia Jordão ; Rodrigues, Hugo ; Pinto, P.M.F. ; Pinto, Pedro M F ; Nogueira, Rogerio N. ; Varum, Humberto ; Costa, Aníbal G. ; de Brito Andre, P.S.
Author_Institution :
Dept. de Fis., Univ. de Aveiro, Aveiro, Portugal
Volume :
9
Issue :
11
fYear :
2009
Firstpage :
1347
Lastpage :
1354
Abstract :
In this study, the implementation of an optical accelerometer unit based on fiber Bragg gratings, suitable to monitor structures with frequencies up to 45 Hz, is reported. The developed optical system was used to estimate the structure eigenfrequencies of a steel footbridge, with a total length of 300 m, over the Sao Pedro Creek, located at University of Aveiro Campus, in Portugal. The acceleration records measured with this solution are compared with those obtained by traditional commercial electronic devices, revealing a root-mean-square error of 2.53 times 10-5 G.
Keywords :
Bragg gratings; accelerometers; bridges (structures); condition monitoring; fibre optic sensors; frequency measurement; mean square error methods; steel; vibration measurement; Portugal; Sao Pedro Creek; University of Aveiro Campus; fiber Bragg grating; optical fiber accelerometer system; root-mean-square error; size 300 m; steel footbridge; structural dynamic monitoring; structural eigenfrequency; Accelerometer; fiber Bragg grating (FBG); optical sensor; structural health monitoring (SHM);
fLanguage :
English
Journal_Title :
Sensors Journal, IEEE
Publisher :
ieee
ISSN :
1530-437X
Type :
jour
DOI :
10.1109/JSEN.2009.2026548
Filename :
5205187
Link To Document :
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