Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 37-42 |
| Number of pages | 6 |
| Journal | Sensors and Actuators A: Physical |
| Volume | 128 |
| Issue number | 1 |
| DOIs | |
| State | Published - 31 Mar 2006 |
Keywords
- Accelerometer
- Civil structure
- Fiber optic
- Moiré fringe
- Monitoring