[1]周宾,杨道业,谢利成,等.利用ECT信息改进EST图像重建[J].东南大学学报(自然科学版),2010,40(1):69-74.[doi:10.3969/j.issn.1001-0505.2010.01.013]
　Zhou Bin,Yang Daoye,Xie Licheng,et al.Improvement of image reconstruction in EST using ECT information[J].Journal of Southeast University (Natural Science Edition),2010,40(1):69-74.[doi:10.3969/j.issn.1001-0505.2010.01.013]
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利用ECT信息改进EST图像重建()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
40
期数:
2010年第1期
页码:
69-74
栏目:
其他
出版日期:
2010-01-20

文章信息/Info

Title:
Improvement of image reconstruction in EST using ECT information
作者:
周宾1;  杨道业2;  谢利成1;  王式民1
1 东南大学空间科学与技术研究院, 南京 210096; 2 南京工业大学自动化与电气工程学院, 南京 210009
Author(s):
Zhou Bin1;  Yang Daoye2;  Xie Licheng1;  Wang Shimin1
1 Institute of Space Science and Technology, Southeast University, Nanjing 210096, China
2 School of Automation and Electrical Engineering, Nanjing University of Technology, Nanjing 210009, China
关键词:
气固两相流;  静电层析成像;  电容层析成像
Keywords:
gas-solid two-phase flow;  electrostatic tomography;  electrical capacitance tomography
分类号:
TB934
DOI:
10.3969/j.issn.1001-0505.2010.01.013
摘要:
提出了基于电容层析成像(ECT)与静电层析成像(EST)的双模态传感器技术.该技术应用电容层析成像重建得到的介质分布结果作为先验信息,提高了静电层析成像的图像重建精度.针对静电荷对ECT测量值的干扰进行了探讨.理论分析表明,ECT采用交流法检测电容,在高频交流激励、带通滤波方式下,微小电容检测系统可以消除颗粒感生电荷噪声的低频干扰.针对电荷灵敏场受介质分布的影响进行了研究,数值仿真计算表明,采用ECT提供的介质分布信息可修正实际流型下的电荷灵敏度,降低EST电荷分布反演的不确定度.由于EST的相对图像误差、相对电荷余量等图像重建指标均有所减小,所以图像相关性更好.
Abstract:
The dual-mode sensor technology is proposed, which can improve the quality of image reconstruction in electrostatic tomography(EST)using the permittivity distribution from electrical capacitance tomography(ECT). The static charge interference to the measurements in ECT was studied, and the theoretical analysis shows that the low-frequency interference of charge-induced noise can be eliminated by using the small capacitance detection system with high-frequency excitation and band-pass filter mode. Furthermore, numerical simulation shows that the charge sensitivity is affected by the permittivity distribution. The permittivity distribution acquired from ECT can be used to modify the charge sensitivity field of EST and to reduce the inversion uncertainty of charge distribution, which effectively reduces the relative image reconstruction error and charge residual, and improves the inversion accuracy of charge distribution.

参考文献/References:

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备注/Memo

备注/Memo:
作者简介: 周宾(1980—),男,博士,讲师; 王式民(联系人),男,教授,博士生导师,smwang@seu.edu.cn.
基金项目: 国家自然科学基金资助项目(50836003,50906013)、国家高技术研究发展计划(863计划)资助项目(2009AA01Z314).
引文格式: 周宾,杨道业,谢利成,等.利用ECT信息改进EST图像重建[J].东南大学学报:自然科学版,2010,40(1):69-74. [doi:10.3969/j.issn.1001-0505.2010.01.013]
更新日期/Last Update: 2010-01-20