The Algorithm of Acoustic Location for Boiler Tube Leakage

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Abstract:

The time delay estimation algorithm based on generalized cross correlation, can suppress the noise power effectively. More accurate result can be gotten by this method of time delay estimation. It is proved by simulation and experimentation that the estimated value of time delay given by generalized cross correlation method is more accurate than which is given by basic correlation method when the signal and noise ratio is stationary, thus the location result based on the time delay is more accurate.

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Periodical:

Advanced Materials Research (Volumes 97-101)

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3024-3027

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Online since:

March 2010

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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[1] Jiang Genshan, An Liansuo and Tian Jing: Modal Study of Multiple Scattering Field on Tubes Surface in a Heat-Exchangers Row, Proceedings of the CSEE. Vol. 26, 31-35, (2006).

Google Scholar

[2] Wang Yi, Wu Changqi and Hu Shuangxi: Comparison of Several Time Delay Estimation Algorithms for TDOA, Radio Communications Technolog. Vol. 34, 52-55, (2008).

Google Scholar

[3] Michael S. Brandstein, John E. Adcock and Harvey F. Silverman: A practical time-delay estimator for localizing speech sources with a microphone array, Computer Speech and Language. Vol. 9, 153-169, (1995).

DOI: 10.1006/csla.1995.0009

Google Scholar

[4] Xie Jiabao, Wu Chuanhua and Fu Shiping: Research on The Time-delay Estimation Method in Passive Location, Shipboard Electronic Countermeasure. Vol. 31, 26-29, (2008).

Google Scholar

[5] Yang Haiming, Yang Jing and Zhou Baolu: The Implementation of Time Delay Estimation in Labview, Science and Technology Information. Vol. 24, 372-515, (2008).

Google Scholar

[6] Shen Guoqing, An Liansuo, Zhang Bo and Li Ke: Selection of Sound Sources and Cross-correlation Characteristic Analysis of Acoustic Signals in Acoustic Pyrometry in Boiler, Modern Electric Power. Vol. 23, 41-46, 2006. No. Source 12∆ (s) 13∆ (s) 14∆ (s) 1 Theoretical value 0. 0445 0. 0445 0. 000 2 White noise 0. 0464 0. 0442 0. 007 3 Swept frequency source(500-8000Hz) 0. 0473 0. 0420 0. 003 4 Swept frequency source(1000-4000Hz) 0. 0438 0. 0388 0. 009.

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