| Design of ERT system |
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| 作者姓名： | 朱建平 王保良 黄志尧 李海青 |
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| 作者单位： | Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China，Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China，Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China，Department of Control Science and Engineering Zhejiang University Hangzhou 310027 China |
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| 摘 要： | INTRODUCTION Electrical resistance tomography (ERT) is a technique producing images based upon variations in conductivity, and has great potential in process ap- plications (Tapp et al., 2003). In an ERT system, current is injected to a pair of drive electrodes and voltage measurements are taken between sense elec- trode pairs, yielding resistance information for image reconstruction (Cilliers et al., 2001). Traditional ERT systems usually use high fre- quency sinusoidal waveforms as …
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| 关 键 词： | X线断层摄影术 ERT 电子阻抗 脉冲电压 体系结构 |
| 收稿时间： | 2005-09-07 |
| 修稿时间： | 2005-09-20 |
Design of ERT system |
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| Zhu Jian-ping,Wang Bao-liang,Huang Zhi-yao,Li Hai-qing.Design of ERT system[J].Journal of Zhejiang University Science,2005,6(12):1446-1448. |
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| Authors: | Zhu Jian-ping Wang Bao-liang Huang Zhi-yao Li Hai-qing |
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| Institution: | (1) Department of Control Science and Engineering, Zhejiang University, 310027 Hangzhou, China |
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| Abstract: | A new electrical resistance tomography (ERT) system, based on the bi-directional current pulse technique, is developed. Polarization effects at the electrodes are eliminated. During each half cycle of the excitation process, direct current (DC)is used as the excitation source and filtering is not needed. Moreover, using optimized data collection protocol, the number of current injections for a 16-electrode system is reduced to 14 for 104 independent readings of an image. Experimental results showed that the system is effective using the sensitivity coefficient algorithm for image reconstruction. |
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| Keywords: | Electrical resistance tomography (ERT) Direct current (DC) Excitation Reconstruction |
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