A Fast Leak Locating Method Based on Wavelet Transform |
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Authors: | GE Chuanhu YANG Hongying YE Hao WANG Guizeng |
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Institution: | aDepartment of Computer Science and Technology, Tsinghua University, Beijing 100084, China;bDepartment of Automation, Tsinghua University, Beijing 100084, China |
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Abstract: | The problem of leak location is actually a time delay estimation (TDE) problem. Since most existing TDE methods may encounter the problem of high computational complexity when used for online leak location. This paper presents a fast leak locating method based on wavelet transform (WT). The method first gets a rough estimate of the time delay from the WT coefficients of the pressure signals at the largest scale, then keeps refining the estimate using WT coefficients on smaller and smaller scales. Quantitative analyses and test results based on real data show that the method reduces the computational complexity while maintaining the time delay estimation accuracy. |
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Keywords: | leak location time delay estimation wavelet transform |
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