JOURNAL ARTICLE

A Fiber Bragg Grating Accelerometer Based on Novel Biaxial Arc Hinge

Abstract

In order to monitor the vibration signal of the Long Span Bridges in both directions, and to address the phenomenon that the fiber Bragg grating (FBG) is sensitive to both strain and temperature, a two-directional FBG accelerometer based on novel biaxial arc hinge was designed and studied. Based on this design of the sensor, dynamics equations analysis, finite element calculation as well as sensor characteristic experiments were carried out respectively. Result comparison and error analysis are also presented concurrently. Experimental results show that the resonant frequency of the FBG accelerometer is about 500 Hz and the sensitivity is 595.17 pm/g. In addition, this structural design has outstanding lateral anti-interference and self-temperature compensating performance.

Keywords:
Fiber Bragg grating Accelerometer Hinge Sensitivity (control systems) Materials science Finite element method Vibration Acoustics Arc (geometry) Optics Span (engineering) SIGNAL (programming language) Interference (communication) Structural engineering Optical fiber Electronic engineering Physics Engineering Computer science Electrical engineering Mechanical engineering

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Topics

Advanced Fiber Optic Sensors
Physical Sciences →  Engineering →  Electrical and Electronic Engineering
Geophysics and Sensor Technology
Physical Sciences →  Engineering →  Ocean Engineering
Vibration and Dynamic Analysis
Physical Sciences →  Engineering →  Control and Systems Engineering

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