电容成像对未知对象的图像重建

Method of Image Reconstruction of Electrical Capacitance Tomography Applying to Unknown Permittivity Object

本文探讨了电容层析成像技术用于两相流检测中对未知介电常数对象的图像重建的方法。提出采用一次仿真校验法对管内分别充满高、低介电常数介质进行仿真校验,并结合迭代算法实现对未知介电常数对象的图像重建。仿真和实验结果表明,该法能较好的重建未知介电常数对象的图像。

A method of image reconstruction of electrical capacitance tomography applying to unknown permittivity object in two-phase flows is studied in the paper. An one-simulation-calibration method is provided, which implements simulation calibration when the pipe fills with high and low permittivity medium respectively, and combines with iterative algorithm to realize image reconstruction for unknown permittivity object. The results of simulation and experiment show that the image of unknown permittivity object can be well reconstructed.