A Dynamic Time Sequence Recognition and Knowledge Mining Method Based on the Hidden Markov Models (HMMs) for Pipeline Safety Monitoring With Φ-OTDR

隐马尔可夫模型 管道(软件) 计算机科学 模式识别(心理学) 人工智能 支持向量机 时域 领域(数学) 特征(语言学) 机器学习 数据挖掘 序列(生物学) 信号(编程语言) 语音识别 计算机视觉 语言学 数学 遗传学 生物 哲学 程序设计语言 纯数学
作者
Huijuan Wu,Xiangrong Liu,Yao Xiao,Yunjiang Rao
出处
期刊:Journal of Lightwave Technology [Institute of Electrical and Electronics Engineers]
卷期号:37 (19): 4991-5000 被引量:96
标识
DOI:10.1109/jlt.2019.2926745
摘要

With the rapid development and extensive applications of phase-sensitive optical time-domain reflectometry to long distance pipeline safety monitoring, it is still challenging to find a very efficient way to achieve highly correct recognition and really deep understanding of physical events sensed in a wide dynamic environment, as the vibration signals usually exhibit non-linear and non-stationary characteristics caused by the complicated environments. In this paper, a dynamic time sequence recognition and knowledge mining method based on the hidden Markov models (HMMs) is proposed to solve this problem. First, local structure feature of the signal is extracted in multiple analysis domains in the time sequence order; and then the HMMs are trained, built, and used to mine the temporal evolution information and identify the sequential state process of typical events. The experimental results with real field test data show that the average recognition accuracy of this paper is as high as 98.2% for frequently encountered five typical events along buried pipelines. All the related performance metrics such as precision, recall, and F-score are better than those traditional machine learning methods such, RF, XGB, DT, and BN.
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