基于传声器阵列与变分模态分解的管道泄漏定位技术  

Sound source localization approach based on microphone array and variational mode decomposition

作　　者：夏丹 刁生林 XIA Dan;DIAO Shenglin(Mechanical Engineering College,Tianjin University,Tianjin 300072,China;Ningbo Bohai Shenheng Technology Co.,Ltd.,Ningbo 315048,China;School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]天津大学机械工程学院,天津300072 [2]宁波博海深衡科技有限公司,浙江宁波315048 [3]武汉理工大学船海与能源动力工程学院,湖北武汉430063

出　　处：《舰船科学技术》2025年第6期55-61,共7页Ship Science and Technology

摘　　要：确保船舶管道系统安全运行是一项关键任务,特别是现代的大型运输船舶,这些船舶负责输送燃油、压缩空气等化学性质活跃的物质,一旦船舶管道发生泄漏,不仅会导致资源浪费,甚至可能引发安全事故。为了实现利用传感器阵列对船舶管道泄漏进行准确的定位,本文提出一种结合变分模态分解(VMD)和广义互相关(GCC)的泄漏定位方法。考虑到船舶在海上航行时复杂的环境噪声,研究首先应用VMD对从各个传感器获得的泄漏信号进行多重分解,随后基于互相关系数自适应地选取主要的固有模态函数(IMF)分量,并消除噪声成分。此外,本文考虑到广义互相关权函数的特性,进一步提出一种改进的权函数,以纳入信噪比对时延估计精度的影响。以五元十字形传感器阵列为例,本文详细阐述了声源定位的计算方法。通过实施管道泄漏实验,研究结果验证了所提方法在不同工况下都能实现鲁棒且精确的时延估计,从而准确地定位管道泄漏。Ensuring the safe operation of marine pipeline systems is a critical task,especially for modern large-scare transportation ships,which are responsible for transporting chemically active substances such as fuel oil and compressed air,and once a leak occurs in a ship pipeline,it will not only lead to a waste of resources,but may also even lead to safety accidents.In order to accurately locate leaks in ship pipelines using sensor arrays,this study proposes a leak localization method that combines Variational Mode Decomposition(VMD)with Generalized Cross-Correlation(GCC).Considering the complex environmental noise encountered by ships during maritime navigation,the research first applies VMD to decompose the leak signals,then adaptively selects the principal Intrinsic Mode Function(IMF)components based on the cross-correlation coefficient,and eliminates noise components.Moreover,considering the characteristics of the weighting function,this study further proposes an improved weighting function to incorporate the impact of signal-to-noise ratio on the accuracy of time delay estimation.Taking a cross-shaped sensor array as an example,this paper elaborates in detail the computational method for acoustic source localization.Through conducting pipeline leak experiments,the research results verify that the proposed method can achieve robust and precise time delay estimation under different working conditions,thereby accurately locating pipeline leaks.

关 键 词：传声器阵列 时延估计 变分模态分解 管道泄漏定位 

分 类 号：U672[交通运输工程—船舶及航道工程]