Leakage Localization with an Acoustic Array that Covers a Wide Area for Pipeline Leakage Monitoring in a Closed Space
Leakage Localization with an Acoustic Array that Covers a Wide Area for Pipeline Leakage Monitoring in a Closed Space
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使用覆盖大面积的声阵进行泄漏定位，用于封闭空间中的管道泄漏监测
DOI：
10.7779/jksnt.2013.33.5.422
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发表时间：
2013
影响因子：
0.5
通讯作者：
Jin
中科院分区：
文献类型：
--
作者：
Choon;J. Jeon;Jin
复杂管道泄漏的定位对保证管道安全至关重要。可以检测泄漏发生位置的传感器阵列使我们能够以相对较低的成本监测广泛的区域。波束形成是一种快速、有效的信源位置估计算法，但它通常是在自由场条件下使用。然而，在实践中，出于安全和维护的目的，许多管道被放置在封闭的空间中。这使得我们考虑反射波的波束形成内部泄漏定位。推导了封闭空间中反射波的波束功率分布，并引入空间平均来抑制反射波的影响。计算机仿真和实验验证了该方法在封闭空间结构健康监测中的有效性。
It is of great importance to localize leakages in complex pipelines for assuring their safety. A sensor array that can detect where leakages occur enables us to monitor a wide area with a relatively low cost. Beamforming is a fast and efficient algorithm to estimate where sources are, but it is generally made use of in free field condition. In practice, however, many pipelines are placed in a closed space for the purpose of safety and maintenance. This leads us to take reflected waves into account to the beamforming for interior leakage localization. Beam power distribution of reflected waves in a closed space is formulated, and spatial average is introduced to suppress the effect of reflected waves. Computer simulations and experiments ensure how the proposed method is effective to localize leakage in a closed space for structural health monitoring.