基于内部阵列电极的电容层析成像系统  

An Electrical Capacitance Tomography Based on Internal Array Electrodes

作　　者：孙犇渊[1] 王化祥[1] 王丕涛[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072

出　　处：《传感技术学报》2013年第6期820-824,共5页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学重点基金项目(50937005);国家自然科学基金青年项目(61201350);天津市自然科学基金项目(11JCYBJC06900)

摘　　要：为了研究电容层析成像系统在测量高介电常数流体中的应用,设计了一套具有内部阵列电极的电容层析成像传感器,改善了传统传感器的灵敏度和非线性特性,拓宽了系统的测量范围。用蒸馏水作为连续相介质进行了数据采集和图像重建,并进一步研究了介质电导率对系统成像的影响。实验表明,该系统可以实现高介电常数介质的测量,并且可用来测量具有微弱导电能力的物体。In order to study the application of electrical capacitance tomography system for media of high dielectric permittivity, an electrical capacitance tomography sensor with internal array electrodes was built. It improves the sensitivity and non-linear characteristics of the sensor and broadens the measurement range of the system. Experimental results concerned with distilled water-continuous media are presented and the effects of conductivity to the imaging of the system are studied. The experiments show that the system can measure the media of high dielectric permittivity and can be used to measure the media with weak conductive ability.

关 键 词：电容层析成像 内电极 高介电常数 电导率 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]