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A Novel Electrical Resistance Tomography System Based on {\rm{C}}^{4}{\rm D} Technique

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5 Author(s)
Baoliang Wang ; Dept. of Control Sci. & Eng., Zhejiang Univ., Hangzhou, China ; Yuanyuan Hu ; Haifeng Ji ; Zhiyao Huang
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For the traditional electrical resistance tomography systems, the contact between the electrodes and the liquid may result in electrode corrosion, which limits the application of electrical resistance tomography in the industry. In this paper, a new electrical resistance tomography system based on a capacitively-coupled contactless conductivity technique is developed. The conductivity distribution of the liquid between electrodes can be measured without direct contact with the liquid. The sensor is designed and the finite element method model is developed. Based on this model, the sensitivity fields are calculated and the structure of sensor is optimized. The data acquisition system is designed based on the phase-sensitive demodulation method. Experimental results show that the conductivity distribution images can be reconstructed, and the real-time performance of the system is evaluated.

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Instrumentation and Measurement, IEEE Transactions on  (Volume:62 ,  Issue: 5 )