Distributed optical fiber vibration sensing method and apparatus thereof
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- 武汉光谷光联网科技有限公司
- Publication Date
- 2006-11-15
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Abstract
Description
technical field
[0001] The invention relates to the field of sensing technology, in particular to an online real-time monitoring, positioning method and monitoring device for vibration signals of regional perimeters and linear boundaries, which is a distributed optical fiber vibration sensing method based on double-loop Mach-Zehnder interference and device. Background technique
[0002] Sensing and alarming systems such as perimeter security, border prevention, earthquake monitoring, and tsunami early warning play a huge role in ensuring the stability of people's lives and protecting people's lives and property. The essence of such systems lies in the detection and analysis of vibration signals . With the development of optical devices and optical communications, fiber optic sensing technology is increasingly used in the field of sensing, gradually replacing some traditional electrical sensors. Due to the essential characteristics of optical fiber are sensitive to signals ...