한국소음진동공학회:학술대회논문집 (Proceedings of the Korean Society for Noise and Vibration Engineering Conference)
- 한국소음진동공학회 2002년도 추계학술대회논문집
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- Pages.234-237
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- 2002
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- 1598-2548(pISSN)
격자형 구조물의 외부 진동 주파수 탐지를 위한 분포형 광섬유 센서 설계 및 실험
Detection of Excited Vibration frequency on the Latticed Fence Structure Using a Distributed Fiber Optic Sensor
초록
To detect external vibration signals on the latticed fence structure, distributed fiber optic sensor using Sagnac interferometer was fabricated and tested. The latticed structure fabricated with dimension of 170cm in width and 180cm in height, the optical fiber, 50m in length, distributed and fixed on the latticed structure. It was verified the sensitivity of the Sagnac interferometer using the PZT phase modulator. Fiber optic external vibration signal spplied to the latticed fence structure from 100Hz to several kHz. The interferometeric fiber optic sensor detected the excited vibration signal very effectively without any signal processing. The detected optical signals were compared and analyzed to the detected acclerometer signals.
키워드