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http://dx.doi.org/10.5207/JIEIE.2003.17.5.134

Estimation of Cavity Vibration Frequency Using Adaptive Filters for Gas Flow Measurement  

남현도 (단국대학교 전기전자컴퓨터공학부)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.17, no.5, 2003 , pp. 134-140 More about this Journal
Abstract
In this paper, a hardware implementation of gas flow meter for accuracy improvement and saving repair costs at a field is investigated. An adaptive filter using LMS algorithms for estimating cavity vibration frequencies in noisy environments is also studied. The proposed cavity gas flow meter measures cavity sound signals in gas flow tube using microphone and signal processing systems estimate the cavity vibration frequency from the measured signal. The flow velocity and flow quantity can be calculated using the estimated cavity vibration frequency. Since cavity vibration frequency is corrupted by the environmental noise, an adaptive filter using NLMS algorithms is used for cancelling the environmental noise. Experiments using 1MS32OC32 digital signal processor are performed to show the effectiveness of the proposed system.
Keywords
flow meter; cavity vibration; adaptive filter; frequency estimation; digital signal processor;
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Times Cited By KSCI : 1  (Citation Analysis)
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