Jia, J and Wang, M (2010) A method of kth harmonic demodulation for logarithmically processed sinusoidal signal. In: 6th World Congress in Industrial Process Tomography. WCIPT, 06-09 Sep 2010, Beijing, China. International Society for Industrial Process Tomography , pp. 670-676. ISBN 978-0-853-16322-0
Abstract
Digital Phase Sensitive Demodulation (PSD) is a classical method to demodulate the sinusoidal response voltages in electrical impedance tomography (EIT). However, due to the use of logarithmic amplifiers in a recently developed compact voltageapplied EIT system, the waveform of logarithmically processed sinusoidal signals is no longer in a form of sinusoidal wave. Therefore, the conventional PSD cannot be directly implemented. In this paper, a method based on kth harmonic demodulation is reported, which has been used to demodulate the logarithmically processed sinusoidal signals in the EIT system without the use of inverse process.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Keywords: | phase sensitive demodulation, logarithmically processed sinusoidal signal, Fourier series, spectrum analysis |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Institute for Particle Science and Engineering (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 26 May 2016 15:09 |
Last Modified: | 26 May 2016 15:09 |
Published Version: | http://www.isipt.org/world-congress/6/727.html |
Status: | Published |
Publisher: | International Society for Industrial Process Tomography |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:99519 |