Biaxial pptical accelerometer and high-angle inclinometer with temperature and cross-axis insensitivity

resumo

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° for each orthogonal sensitive direction for angular rotations smaller than 45°. For inclinations higher than 45°, a suitable calibration expression is presented. © 2012 IEEE.

autores

Antunes P.F.C.; Marques C.A.; Varum H.; Andrél P.S.

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