电阻层析成像传感器软场特性分析

电阻层析成像传感器的敏感场是软场，受被测介质的影响．利用作者建立的ERT仿真 软件为工具，通过多种介质分布下灵敏度分布的计算与比较，研究了传感器的软场特性．结 果表明，不同的介质分布可导致灵敏度有正、负百分之几十的变化．各处灵敏度变化不仅与 场域内介质有关，还与该点在灵敏场中所处的位置有关．

ANALYSIS OF SOFT-FIELD CHARACTERISTICS OF RESISTANCE TOTOMOGRAPHY SENSORS

Resistance tomography sensor possesses a soft field . This field is distorted by the media material distribution to be measured . Using the ERT finite element method simulation software set up by authors in NEU , the sensitivity distributions under different media distributions were calculated . The soft field characteristics of resistance tomography sensor was investigated by comparing and contrasting these sensitivity distributions . Different phase distributions can result in several tenths increase or decrease in sensitivity values . The sensitivity value chage at each pixel correlates to not only the media distribution inside the field , but also the pixel position.