| 小波Semisoft阈值函数在输油管道泄漏信号处理中的应用 |
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| 引用本文： | 吴荔清,娄胜南.小波Semisoft阈值函数在输油管道泄漏信号处理中的应用[J].科学技术与工程,2007,7(21):5658-5661. |
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| 作者姓名： | 吴荔清 娄胜南 |
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| 作者单位： | 中国石油大学(华东)信息与控制工程学院,东营,257061 |
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| 摘 要： | 输油管道中存在的噪声影响了有用泄漏信号的提取,为了提高泄漏检测系统的灵敏度,降低系统的误报警率,利用小波半软(semisoft)阈值函数对实测的泄漏信号进行去噪处理,并与其他几个常用阈值函数的去噪结果进行比较,结果表明,半软阈值函数法可有效地去除管道信号中的噪声。
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| 关 键 词： | 小波 半软阈值法 泄漏检测 去噪方法 |
| 文章编号： | 1671-1819（2007）21-5658-04 |
| 修稿时间： | 2007-07-23 |
Application of the Wavelet Semisoft Threshold in the Oil Pipeline Leakage Signals |
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| WU Li-qing,LOU Sheng-nan.Application of the Wavelet Semisoft Threshold in the Oil Pipeline Leakage Signals[J].Science Technology and Engineering,2007,7(21):5658-5661. |
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| Authors: | WU Li-qing LOU Sheng-nan |
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| Institution: | Information and Control Engineering College, China University of Petroleum, Dongying 257061, P. R. China |
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| Abstract: | Because of the noise in the oil pipeline,the wavelet semisoft threshold model is utilized to denoise the pipeline leakage signals to improve the high sensitivity of leak detection and low percent of false alarm of the leakage detection system.Comparing the denoising effect with hard threshold,soft threshold and Garrote threshold,the result indicates that the semisoft threshold method is the more effective method in oil pipeline denoising. |
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| Keywords: | wavelet semisoft threshold model leakage detection denoising method |
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