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| 基于Φ OTDR技术的通信光缆险情定位与预警系统设计与实现 |
| Research for the distributed optical fiber early warning system based on rayleigh scattering light Φ OTDR |
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| DOI: |
| 中文关键词: 分布式光纤传感系统 Φ OTDR 通信光缆 防破坏智能预警 |
| 英文关键词:distributed optical fiber sensing system (Φ OTDR) Fiber communication cable vandal resistant smart early warning |
| 基金项目: |
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| 摘要点击次数: 3584 |
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| 中文摘要: |
| 研究基于Φ 光时域反射计(Φ OTDR)技术的分布式光纤传感方法,分析了基于相干光时域反射计的分布式光纤振动传感机理。在此基础上系统采用一段40 km多芯通信光缆中的一芯光纤作为传感光纤进行通信光缆险情定位与预警试验。试验结果表明,该系统可对40 km通信光缆不同位置的入侵事件自动识别预警,显示险情位置,定位精度优于50 m。 |
| 英文摘要: |
| A distributed optical fiber sensing method based on Φ optical time domain reflectometer (Φ OTDR) technology is analyzed. The measurement mechanism of distributed vibration sensing techniques based on Φ OTDR is also analyzed. By using a one core optical fiber of a 40 km multi core communications cable as sensing fiber, communications cable risk orientation and early warning test are conducted. The experiments demonstrated that the system is able to conduct automatic discerning early warning and point out the dangerous position, with the orienting accuracy of ±50 m. |
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