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《Chinese Journal of Sensors and Actuators》 2008-10
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Method for Identifying Gas/Liquid Two-Phase Flow Patterns Using Conductance Probes Technique and Noise Recognition of Conductance Fluctuating Signals

ZHOU Yun-long1,ZHANG Xue-qing2,SUN Bin11.School of Energy and Mechanical Engineering,Northeast Dianli University,Jilin Jilin 132012,China;2 School of Automation Engineering,Northeast Dianli University,Jilin Jilin 132012,China  
For the identification of gas/liquid two-phase flow in vertical upward pipe,a kind of measuring system with multiple conductance probes was presented,of which conductance sensors was composed by three conductance probes,and data acquisition of conductance fluctuation signals came true by using INV306 data collection card on the basis of measuring system.Owing to measuring the parameters of different kinds of production,signals inevitably presented noise information,conductance fluctuation signals was supposed to low frequency signals,of which the frequency was not over 128Hz,by means of wavelet decomposition and the analysis of auto-correlation function.After eliminating noise with wavelet analysis and Fourier transform,we found the useful signals were well preserved by wavelet analysis,which had more merit than Fourier transform.
【Fund】: 吉林省科技发展计划项目资助(20040513)
【CateGory Index】: P631.32
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