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Chen Bin, Liu Ge. Study on the detection of the water content in oil based on the envelope spectrum of HHT [J]. Chinese Journal of scientific Instrument,2014,35(2):337-342

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Accession number:  20141317512601

  Title:  Study on the detection of the water content in oil based on the envelope spectrum of HHT
  Authors:  Chen, Bin1 Email author hustchb@163.com; Liu, Ge1 Email author lycy9945@163.com
  Author affiliation:  1 Engineering Research Centre for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China
  Corresponding author:  Liu, G. (lycy9945@163.com)
  Source title:  Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument
  Abbreviated source title:  Yi Qi Yi Biao Xue Bao
  Volume:  35
  Issue:  2
  Issue date:  February 2014
  Publication year:  2014
  Pages:  337-342
  Language:  Chinese
  ISSN:  02543087
  CODEN:  YYXUDY
  Document type:  Journal article (JA)
  Publisher:  Science Press
  Abstract:  In order to accurately detect the water content in oil, a new detection approach based on Hilbert-Huang transform (HHT) envelope spectrum is presented. Firstly, according to the characteristic that the pressure resonance signal of the oil containing water is an amplitude-modulation signal, the expression of the pressure resonance signal is established; and the empirical mode decomposition (EMD) is performed to obtain the intrinsic mode functions (IMFs) of the signal. Then, the IMFs having strong correlation with the original signal are analyzed using the Hilbert transform envelope spectrum demodulation, and the accurate demodulation signal that contains the characteristic information of water content in oil is obtained. The experiment results show that as the water content in oil increases, the order of the pressure resonance frequency decreases gradually, there is a corresponding relation between the resonance frequency of the oil with different water contents and the water content in oil. This method can effectively achieve the water content detection in oil, and provides a theoretical support for the safe operation of oil system.
  Number of references:  18
  Main heading:  Signal detection
  Controlled terms:  Demodulation  -  Error detection  -  Natural frequencies  -  Water content
  Uncontrolled terms:  Corresponding relations  -  Different water contents  -  Empirical Mode Decomposition  -  Envelope spectra  -  Hilbert Huang transforms  -  Intrinsic Mode functions  -  Resonance frequencies  -  Strong correlation
  Classification code:  444 Water Resources -  711.1 Electromagnetic Waves in Different Media -  716 Telecommunication; Radar, Radio and Television -  716.1 Information Theory and Signal Processing -  721.1 Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory
  Database:  Compendex
Compilation and indexing terms, © 2013 Elsevier Inc.

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