| 12电极电容层析成像系统的设计 |
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| 引用本文： | 孟宪永,杨晓光.12电极电容层析成像系统的设计[J].机电产品开发与创新,2011,24(4):132-134. |
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| 作者姓名： | 孟宪永 杨晓光 |
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| 作者单位： | 1. 唐山民和科技有限公司,河北唐山,063000
2. 河北工业大学电气工程学院,天津,300130 |
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| 基金项目： | 河北省自然科学基金资助 |
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| 摘 要： | 电容层析成像技术(ECT)是基于电容敏感原理的过程层析成像技术(PT).它可进行多相流的相浓度、流型、流量等参数的在线测量,是目前最具发展前景的多相流参数检测方法.本文以12电极电容层析成像系统为研究对象.主要介绍一种基于交流激励型的电容层析成像的C/V转换电路,并分析了该电路的工作原理.该电路能抑制杂散电容的干扰,能...
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| 关 键 词： | 电容层析成像 转换电路 ECT基本原理 |
12 Electrodes Electrical Capacitance Tomography System |
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| MENG Xian-Yong,YANG Xiao-Guang.12 Electrodes Electrical Capacitance Tomography System[J].Development & Innovation of Machinery & Electrical Products,2011,24(4):132-134. |
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| Authors: | MENG Xian-Yong YANG Xiao-Guang |
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| Affiliation: | 1.Tangshan Automation Technology Incorporation,Tangshan Hebei 063000,China; 2.School of Electrical Engineering,Hebei University of Technology,Tianjin 300130,China) |
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| Abstract: | Electrical capacitance tomography technique（ECT）is a kind of process tomography technique（PT）based on the sensitive principle of capacitance.It can be used to calculate the fraction and identify the flow pattern and flow quantity in multiphase flow.It is known as the best measuring method of multiphase flow at present.This dissertation is based on the study of 12-electrode electrical capacitance tomography system.Mainly demonstrate a kind of electrical capacitance tomography conversion circuit based on the AC excitation signal and analyzes the working principle of the circuit,this circuit can suppress the interference of stray capacitance,to measure small capacitance changes and is characterized by strong anti-interference ability,good stability and smaller drift. |
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| Keywords: | electrical capacitance tomography conversion circuit ECT principle |
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