12-electrodes Electrical Capacitance Tomography Detection System Based on Relevant Technology
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12-electrodes Electrical Capacitance Tomography Detection System Based on Relevant Technology
Vol. 14, Issue 5, Pages: 31-34(2009)
作者机构:
哈尔滨理工大学测控技术与通信工程学院
作者简介:
基金信息:
DOI:
CLC:TP274.4
Published:2009
稿件说明:
移动端阅览
GUO Hong, LI Yan, ZHANG Li-yong. 12-electrodes Electrical Capacitance Tomography Detection System Based on Relevant Technology[J]. 2009, 14(5): 31-34.
DOI:
GUO Hong, LI Yan, ZHANG Li-yong. 12-electrodes Electrical Capacitance Tomography Detection System Based on Relevant Technology[J]. 2009, 14(5): 31-34.DOI:
12-electrodes Electrical Capacitance Tomography Detection System Based on Relevant Technology
摘要
在电容层析成像系统中
要求移相器的输出必须与检测信号达到精确同频同相
从而保证相敏解调输出的准确性.而在检测系统中存在大量杂散电容
使检测信号产生相移.为提高检测的准确性
以12电极油水两相流电容层析成像系统为研究对象
在分析电容层析成像系统测量原理的基础上
设计了电容层析成像检测系统
系统采用相干解调的方法避免了杂散电容对相位的影响.并通过实验验证了方法是实用可行的.
Abstract
In ECT system
it is requested that the output signal of the phase shifter must have the same frequency and phase with the detect signals to ensure the accuracy of the phase-sensitive demodulator’s output.But in the detection system there are a large number of stray capacitance
which makes phase shift of the detect signals.To improve the accuracy of the detection
the research of 12-electrode oil-water two-phase flows electrical capacitance tomography system was carried out.Based on the analysis of the ECT sy...