Robustness Analysis Based on Optical Fiber Sensor Networks Topology
Robustness Analysis Based on Optical Fiber Sensor Networks Topology
复制标题
基于光纤传感器网络拓扑的鲁棒性分析
DOI：
10.1109/jsen.2014.2362915
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发表时间：
2015-03-01
影响因子：
4.3
通讯作者：
Zhang, Yimo
中科院分区：
文献类型：
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作者：
Zhang, Hongxia;Gong, Yuhan;Zhang, Yimo
尽管光纤传感器网络（OFSNs）受到越来越多的关注，但其仍然面临着缺乏定量评估网络鲁棒性的方法的问题。本文改进了现有的OFSN鲁棒性评估模型，提出了基于蒙特卡罗方法的鲁棒性误差评估方法。利用该模型对线、环、星星、总线和双环等几种网络拓扑结构进行了鲁棒性仿真，结果表明Fernando-Vallejo等人提出的同心双环拓扑结构比其他四种拓扑结构具有更好的鲁棒性。详细列出了在环形拓扑下进行鲁棒性计算所需的参数。在此基础上，建立了一种实验鲁棒性评估方法.在此基础上，采用了四种基本拓扑结构的八点光纤光栅传感网络。采用支持向量机对数据进行处理。通过实验得到了阈值和衰减系数。实验与仿真结果的对比验证了该鲁棒性评价方法的实用性，同时也证明了环形和星星型拓扑结构的鲁棒性优于其它拓扑结构，而总线型拓扑结构不适合通过增加传感器来提高鲁棒性。
Although optical fiber sensor networks (OFSNs) attract more and more attentions, they are still facing the problem of lacking the methods for assessing network robustness quantitatively. This paper improves the recently presented OFSNs robustness evaluation model by proposing the robustness error assessment based on Monte Carlo method. Robustness simulations of several network topologies, including line, ring, star, bus, and double ring topologies, have been done with the model, proving that the concentric double ring topology proposed by Fernandez-Vallejo et al. is more robust than the other four topologies. Parameters required for robustness calculation in ring topology are listed in detail. Then, an experimental robustness assessment approach is established. According to it, eight-point fiber Bragg grating sensor networks with the four basic topologies are employed. Support vector machine is applied to process data. Both threshold and attenuation coefficient have been gotten from experiments. Comparison between experimental and simulative robustness verifies the practicability of the robustness evaluation method, and also proves that ring and star topologies are better than the others, whereas bus topology is unfit for improving robustness by adding sensors.