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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2005, Vol. 6 Issue (12): 1446-1448    DOI: 10.1631/jzus.2005.A1446
China-U.K. Workshop on Process Tomography, April 15-22, 2005, Beijing and Hangzhou, P. R. China     
Design of ERT system
Zhu Jian-ping, Wang Bao-liang, Huang Zhi-yao, Li Hai-qing
Department of Control Science and Engineering, Zhejiang University, Hangzhou 310027, 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.

Key words： Electrical resistance tomography (ERT)      Direct current (DC)      Excitation      Reconstruction     
Received: 07 September 2005     
CLC:  TB126  
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Zhu Jian-ping
Wang Bao-liang
Huang Zhi-yao
Li Hai-qing
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Zhu Jian-ping, Wang Bao-liang, Huang Zhi-yao, Li Hai-qing. Design of ERT system. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2005, 6(12): 1446-1448.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2005.A1446     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2005/V6/I12/1446

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