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Novel Fiber Optic Accelerometer System Using Geometric Moiré Fringe

Feng, Maria Q.; Kim, Dae-Hyun

This paper presents an innovative fiber optic accelerometer system for monitoring vibration of large-size structures. The system is composed of one (or multiple) sensor head and a control unit for driving the sensor and processing sensor data. The sensing mechanism is based on a novel integration of the moiré fringe phenomenon with fiber optics, resulting in accurate and reliable measurement. A prototype fiber optic accelerometer system has been successfully developed, including a sensor head, a low-cost control unit and a software package with a unique algorithm for processing the moiré fringe signals into accelerations with a high resolution. Finally, free vibration and shaking table tests were performed to identify the dynamic characteristics and demonstrate the high performance of the sensor system developed in this study.

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Also Published In

Title
Sensors and Actuators A: Physical
DOI
https://doi.org/10.1016/j.sna.2005.12.050

More About This Work

Academic Units
Civil Engineering and Engineering Mechanics
Published Here
March 27, 2013