| 输气管道泄漏音波信号的几种滤波算法 |
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| 引用本文： | 方丽萍,钟莹莹,梁金禄,黄建德.输气管道泄漏音波信号的几种滤波算法[J].钦州师范高等专科学校学报,2013(8):29-33. |
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| 作者姓名： | 方丽萍 钟莹莹 梁金禄 黄建德 |
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| 作者单位： | 钦州学院化学化工学院,广西钦州535000 |
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| 基金项目： | 2013年钦州学院校级青年科研项目：长输气管道泄漏检测音波信号处理技术的研究（2013XJKY-51Q）. |
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| 摘 要： | 输气管道泄漏音波信号在传播过程中高频部分迅速衰减,低频部分能传播较远的距离.根据这一特点拟合仿真信号模型,以信噪比和均方根误差为指标对傅里叶变换、维纳滤波、中值滤波和小波分析进行对比分析,结果表明：小波分析去除背景噪声具有较高的信噪比和较小的均方根误差,中值滤波次之,维纳滤波和傅里叶变换最差.
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| 关 键 词： | 输气管道 泄漏检测 滤波算法 小波分析 |
Several Filting Algorithm for Acoustic Leak Signals in Gas Pipeline |
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| FANG Li-ping,ZHONG Ying-Ying,LIANG Jin-Lu,HUANG Jian-de.Several Filting Algorithm for Acoustic Leak Signals in Gas Pipeline[J].Journal of Qinzhou Teachers College,2013(8):29-33. |
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| Authors: | FANG Li-ping ZHONG Ying-Ying LIANG Jin-Lu HUANG Jian-de |
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| Institution: | ( College of Chemistry and Chemical Engineering, Qinzhou University, Qinzhou 535000, China ) |
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| Abstract: | The high-frequency of acoustic leak signal attenuates when in transmission , while the low-frequency can travel a far way. This paper fits a simulation model of acoustic leakage signal in gas pipeline according to this feature, compares and a- nalysis FFT, wiener filtering , median filtering and wavelet analysis using rms and rmse as parameters based on this model. Re- sult shows background noise decreasing using wavelet analysis have the highest rms and lowest rmse, wiener filtering is seconda- ry, median filtering and Fb3＂ is the worst. |
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| Keywords: | gas pipeline leak detection filtering algorithm wavelet analysis |
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