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Title: Biaxial optical accelerometer and high-angle inclinometer with temperature and cross-axis insensitivity
Author: Antunes, P.
Marques, C.
Varum, H.
André, P.
Keywords: Accelerometer
Fiber Bragg grating
Optical sensor
Structural health monitoring
Issue Date: 2012
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Abstract: In this paper, we describe the implementation and test of an optical fiber biaxial accelerometer and inclinometer based on fiber Bragg gratings. The proposed sensor is a low cost and simple solution to measure acceleration and relative rotation in two orthogonal directions, which can be used for structural health monitoring. Sensitivities of 87.848 and 92.351 pm.g−1, for each sensitive direction with resonant frequencies of 846.01 and 845.33 Hz, respectively, are achieved. For the inclinometer, the tilt sensitivities are 1.43 ± 0.03 and 1.38 ± 0.03 pm/º for each orthogonal sensitive direction for angular rotations smaller than 45º. For inclinations higher than 45º, a suitable calibration expression is presented.
Peer review: yes
DOI: 10.1109/JSEN.2012.2190763
ISSN: 1530-437X
Appears in Collections:DECivil - Artigos

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