Cost-effective application of fiber vibration sensing technology

Le résumé fourni par la source

Fiber sensing technology is widely used for long-distance, large-scale security detection and prevention. In this study, we analyze the characteristics of Sagnac and Michelson vibration sensors, focusing on their underlying principles. Our analysis concludes that the Sagnac vibration sensor is less sensitive to low-frequency vibration signals and those occurring at the central position of the Sagnac fiber ring. In contrast, the Michelson vibration sensor does not exhibit these limitations. As a result, the Michelson sensor is better suited for ground-buried vibration detection, as it can reduce the false positive rate caused by soil absorption. On the other hand, the Sagnac vibration sensor is more cost-effective for fence-attached vibration detection. We propose a cost-effective fiber vibration sensing system that combines the advantages of both the Sagnac and Michelson vibration sensors. The system processes vibration signals to enhance sensitivity and reduce false alarm rates, while utilizing neural network algorithms to classify nuisance events on fences. Our system enables unmanned, intelligent security surveillance.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.