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以电容传感器在线检测输油管道中油／水／气流体信号为基础，分析了测量原理．提出了基于小波变换的三相流流体信号的后处理的原理及方法，并具体分析了提取水／气相流体流速的过程
Based on the capacitive sensor online detection of oil / water / gas fluid in pipeline, the principle of measurement is analyzed. The principle and method of the post-processing of the three-phase fluid signal based on wavelet transform are proposed, and the process of extracting the flow velocity of the water /