摘要
电容层析成像技术利用多电极电容传感器实现对多相流电介质分布进行可视化。通过对管道内径为10 mm,管壁厚度为5 mm的8电极电容传感器的数值模拟,研究了管道介电常数、管内介质介电常数以及径向电极对传感器电容绝对值、空满管电容变化值和传感器线性度的影响,分析了厚管壁下电容传感器的灵敏场特性,并给出了在高径极比条件下传感器设计的参数优化方案,为电容层析成像检测电路的设计提供相应的依据。
The electrical capacitance tomography was developed for visualizing the distribution of dielectric materials in multiphase flow using multi-electrode capacitance sensors.The data simulation was performed on 8-electrode capacitance sensor with 10 mm inner diameter and 5 mm pipe thickness.The effect of pipeline permittivity,medium permittivity and the radial electrode on sensor capacitance,capacitance variety of full/empty pipe and the linearity of sensor was researched,and then the sensitivity map characteri...
出处
《仪表技术与传感器》
CSCD
北大核心
2008年第5期82-86,共5页
Instrument Technique and Sensor
基金
973国家重点基础研究专项经费资助项目(2004CB217902-04)
关键词
电容传感器
电容层析成像
厚管壁
capacitance sensor
electrical capacitance tomography
thick pipeline wall
