【摘要】 电容层析成像传感器的敏感场受多相流介质分布的影响,软场特性给图像重建带来很大困难,为了提高重建图像质量,对敏感场分布进行分析是非常必要的。该文以12电极方形电容传感器为基础,对电容层析成像技术应用于循环流化床研究做了简单阐述,着重研究了用有限元法对方形电容传感器敏感场分布的计算机仿真,讨论了负敏感场的处理方法。更多还原

【Abstract】 Sensor sensitivity field in electrical capacitance tomograhpy(ECT) is affected by the distribution of multiphase medium,that is the peculiarity of soft field,which brings great difficulty for image reconstruction.To improve the quality of image reconstruction,it is necessary to analyze the distribution of sensitivity field.This paper simply summarizes the ECT used in circulating fluidized bed based on 12-electrode capacitance tomography sensor,and mainly investigates the computer simulation to the distribution of sensitivity field in ECT by using finite element method.The disposal of negative sensitivity field is discussed.更多还原