波束形成是一种较成熟的声源定位算法，已被成功应用于大型混凝土等结构的健康检测[1]，但该方法多用于主动检测或对突发性信号的被动检测。波束形成算法将被用于对连续性声信号的被动检测及源定位，利用L型传感器阵列，通过在1m×1m×2.5mm的镁铝合金平板上实施实验，从原理和实验两方面研究阵列与泄漏源之间的距离对基于波束形成算法的声源定位技术定位精度的影响。实验结果将为该技术在实际应用中传感器阵列的布局提供参考数据。
Abstract
Beam-Forming is a mature source location algorithm which is already used in health detection of large concrete structures. However, this method is mostly used to positive detection or detection and location of sudden signal. Beam-forming arithmetic will be used to passively detect and locate the continuous leakage signal, utilizing an L-shape sensor array to gather the leakage signal. By carrying out experiments on a 1m×1m×2.5mm size magnalium plate, the influence of distance between transducer array and the signal source on the accuracy of source location of continuous leakage signal will be studied both on theory and experiment. The experimental result will be a reference for distribution of sensor array when this method is used in practical application.
关键词
气体泄漏 /
波束形成 /
距离 /
定位精度
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Key words
continuous leak /
beam-forming /
distance /
location accuracy
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参考文献
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