摘要
Abstract
In order to solve the defects of poor signal-to-noise ratio in the central area,edge effects,and low recogni⁃tion accuracy of electrical capacitance tomography in tube fluid monitoring,the dual potentials excitation method is proposed to improve the detection signal strength at the central area. The finite element model of a 16 electrode ex⁃ternally mounted sensor is established using software COMSOL Multiphysics,and simulations are performed by us⁃ing conventional single-voltage excitation method and the proposed dual potentials excitation method,respectively. And the results are compared by test,the results show that compared with the traditional single-voltage excitation method,the dual potentials excitation method can improve the uniformity of the electric field and potential distribu⁃tion,and lead to the detection signal strength and sensitivity level of the central region within the tube an obvious improrement,so the fluid monitoring recognition accuracy is increased.关键词
电容层析成像/双电压激励法/有限元/单电压激励法/灵敏度Key words
electrical capacitance tomography/dual potentials excitation method/finite element method/single potential citation method/sensitivity分类
信息技术与安全科学
