High-Speed FBG-Based Fiber Sensor Networks for Semidistributed Strain Measurements
High-Speed FBG-Based Fiber Sensor Networks for Semidistributed Strain Measurements
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DOI：
10.1109/jphot.2013.2258143
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发表时间：
2013-04
影响因子：
2.4
通讯作者：
Lian-shan Yan;Zongling Wu;Zhiyong Zhang;W. Pan;B. Luo;Ping Wang
中科院分区：
文献类型：
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作者：
Lian-shan Yan;Zongling Wu;Zhiyong Zhang;W. Pan;B. Luo;Ping Wang
基于波长复用或时分复用（WDM 或 TDM）方案的传统光纤布拉格光栅（FBG）传感器网络可能会受到移动机械部件的低询问速度或具有相同布拉格波长的节点之间不可避免的串扰的影响。在本文中，通过将 TDM 和 WDM 方案合并到匹配的基于 FBG 的传感器网络中，并在高速电子平台的推动下，我们为每个传感器节点实现了 400 kHz 的采样速度和 5 米的空间分辨率。在涡轮叶片模型上演示了半分布式应变测量，其结果与精确谱分析的结果相当。
Conventional fiber-Bragg-grating (FBG)-based sensor networks based on either wavelength- or time-division-multiplexing (WDM or TDM) schemes may suffer from low interrogation speed with moving mechanical parts or inevitable crosstalk between nodes with the same Bragg wavelength. In this paper, by incorporating both TDM and WDM schemes into matched FBG-based sensor networks and facilitated by the high-speed electronic platform, we achieve 400-kHz sampling speed for each sensor node with a 5-meter spatial resolution. Semidistributed strain measurement is demonstrated on a turbine blade model with results comparable to those by accurate spectral analyses.