三维电容层析成像组合电极激励测量模式
|
摘要
针对3层电容阵列电极传感器,基于三维仿真,研究了两种组合电极激励测量模式,并与传统的单电极激励单电极测量模式进行了比较,包括电容测量值大小及其动态范围、敏感场分布均匀性以及重建图像质量。基于COMSOL软件及Matlab软件进行了仿真实验,结果表明:相较于传统的单电极激励单电极测量模式,组合电极激励测量模式所得图像重建效果更好,测量电容值较大且动态范围较小,敏感场分布更加均匀,对中心物体的成像质量明显提高。
For the three-layer capacitance array sensor,two kinds of combined-electrode exciting-measuring mode are studied based on three-dimensional simulation. The values and the dynamic range of measured capacitance data,the uniformity of sensitivity distribution and the reconstructed images of different flow regimes are compared with conventional single-electrode exciting-measuring mode. Simulation experiments are carried out using COMSOL and Matlab software. The simulation results show that the measured capacitance values are larger and its dynamic range is smaller for the presented combined-electrode exciting-measuring mode. Meanwhile,the sensitivity distribution is more uniform and the quality of reconstructed images is improved obviously.
For the three-layer capacitance array sensor,two kinds of combined-electrode exciting-measuring mode are studied based on three-dimensional simulation. The values and the dynamic range of measured capacitance data,the uniformity of sensitivity distribution and the reconstructed images of different flow regimes are compared with conventional single-electrode exciting-measuring mode. Simulation experiments are carried out using COMSOL and Matlab software. The simulation results show that the measured capacitance values are larger and its dynamic range is smaller for the presented combined-electrode exciting-measuring mode. Meanwhile,the sensitivity distribution is more uniform and the quality of reconstructed images is improved obviously.
引文
[1]刘靖,孙猛,刘石.电容层析成像技术测量煤粉输送浓度的研究[J].计量学报,2011,32(1):31-35.Liu J,Sun M,Liu S. Study on the Measurement of Pulverized-coal Concentration using Electrical Capacitance Tomography[J]. Acta Metrologica Sinica,2011,32(1):31-35.
[2]王化祥.电学层析成像[M].北京:科学出版社,2013.
[3]王元超.三维电容层析成像测量系统仿真平台设计[D].东营:中国石油大学(华东),2012.
[4]王海刚,刘石,杨五强,等.电容层析成像三维成像算法研究与软件设计[J].仪器仪表学报,2004,25(6):701-704.Wang H G,Liu S,Yang W Q,et al. Virtual 3D Imaging and Software Design for Electrical Capacitance Tomography[J]. Chinese Journal of Scientific Instrument,2004,25(6):701-704.
[5]陆洋.直接三维ECT传感器结构参数优化研究[D].沈阳:沈阳工业大学,2014.
[6]陈德运,高明,宋蕾,等.一种新型的三维ECT传感器及三维图像重建方法[J].仪器仪表学报,2014,35(5):961-968.Chen D Y,Gao M,Song L,et al. Novel 3D ECT sensor and its 3D image reconstruction method[J]. Chinese Journal of Scientific Instrument,2014,35(5):961-968.
[7]许闻楷,陈德运,高明,等.电容层析成像三维传感器设计及图像重建[J].哈尔滨理工大学学报,2016,21(5):34-39.Xu W K,Chen D Y,Gao M,et al. Design of ThreeDimensional Sensor and Image Reconstruction for Electrical Capacitance Tomography[J]. Journal of Harbin University of Science and Technology,2016,21(5):34-39.
[8]马敏,王伯波,闫超奇,等.基于旋转电极的电容层析成像技术图像融合算法[J].计量学报,2018,39(1):43-46.Ma M,Wang B B,Yan C Q, et al. Image Fusion Algorithm-Based Rotating Electrodes for Electrical Capacitance Tomography[J]. Acta Metrologica Sinica,2018,39(1):43-46.
[9]毛明旭,叶佳敏,王海刚,等.三维电容层析成像多电极激励模式的稳定性分析[J].中国科学院大学学报,2017,34(2):186-190.Mao M X,Ye J M,Wang H G,et al. Stability analysis of multi-electrode excitation strategies for 3D ECT[J].Journal of University of Chinese Academy of Sciences,2017,34(2):186-190.
[10]张立峰,刘晶,田沛.一种电容层析成像系统电极组合激励测量方法[J].计量学报,2017,38(4):469-472.Zhang L F,Liu J,Tian P. An Exciting-measuring Mode for Electrical Capacitance Tomography System[J]. Acta Metrologica Sinica,2017,38(4):469-472.
[11] Yang W Q,Spink D M,York T A,et al. An imagereconstruction algorithm for electrical capacitance tomography[J]. Measurement Science&Technology,1999,10(11):1 065-1 069.
[12] Yang W Q,Peng L H. Image reconstruction algorithms for electrical capacitance tomography[J]. Measurement Science&Technology,2003,14(1):R1-R13.
[2]王化祥.电学层析成像[M].北京:科学出版社,2013.
[3]王元超.三维电容层析成像测量系统仿真平台设计[D].东营:中国石油大学(华东),2012.
[4]王海刚,刘石,杨五强,等.电容层析成像三维成像算法研究与软件设计[J].仪器仪表学报,2004,25(6):701-704.Wang H G,Liu S,Yang W Q,et al. Virtual 3D Imaging and Software Design for Electrical Capacitance Tomography[J]. Chinese Journal of Scientific Instrument,2004,25(6):701-704.
[5]陆洋.直接三维ECT传感器结构参数优化研究[D].沈阳:沈阳工业大学,2014.
[6]陈德运,高明,宋蕾,等.一种新型的三维ECT传感器及三维图像重建方法[J].仪器仪表学报,2014,35(5):961-968.Chen D Y,Gao M,Song L,et al. Novel 3D ECT sensor and its 3D image reconstruction method[J]. Chinese Journal of Scientific Instrument,2014,35(5):961-968.
[7]许闻楷,陈德运,高明,等.电容层析成像三维传感器设计及图像重建[J].哈尔滨理工大学学报,2016,21(5):34-39.Xu W K,Chen D Y,Gao M,et al. Design of ThreeDimensional Sensor and Image Reconstruction for Electrical Capacitance Tomography[J]. Journal of Harbin University of Science and Technology,2016,21(5):34-39.
[8]马敏,王伯波,闫超奇,等.基于旋转电极的电容层析成像技术图像融合算法[J].计量学报,2018,39(1):43-46.Ma M,Wang B B,Yan C Q, et al. Image Fusion Algorithm-Based Rotating Electrodes for Electrical Capacitance Tomography[J]. Acta Metrologica Sinica,2018,39(1):43-46.
[9]毛明旭,叶佳敏,王海刚,等.三维电容层析成像多电极激励模式的稳定性分析[J].中国科学院大学学报,2017,34(2):186-190.Mao M X,Ye J M,Wang H G,et al. Stability analysis of multi-electrode excitation strategies for 3D ECT[J].Journal of University of Chinese Academy of Sciences,2017,34(2):186-190.
[10]张立峰,刘晶,田沛.一种电容层析成像系统电极组合激励测量方法[J].计量学报,2017,38(4):469-472.Zhang L F,Liu J,Tian P. An Exciting-measuring Mode for Electrical Capacitance Tomography System[J]. Acta Metrologica Sinica,2017,38(4):469-472.
[11] Yang W Q,Spink D M,York T A,et al. An imagereconstruction algorithm for electrical capacitance tomography[J]. Measurement Science&Technology,1999,10(11):1 065-1 069.
[12] Yang W Q,Peng L H. Image reconstruction algorithms for electrical capacitance tomography[J]. Measurement Science&Technology,2003,14(1):R1-R13.