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arXiv · 1810.09517

A High Accuracy and High Sensitivity System Architecture for Electrical Impedance Tomography System

Hui Li·Boxiao Liu·Yongfu Li·Guoxing Wang·Yong Lian
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Abstract

A high accuracy and high sensitivity system architecture is proposed for the read-out circuit of electrical impedance tomography system-on-chip. The switched ratiometric technique is applied in the proposed architecture. The proposed system architecture minimizes the device noise by processing signals from both read-out electrodes and the stimulus. The quantized signals are post-processed in the digital processing unit for proper signal demodulation and impedance ratio calculation. Our proposed architecture improves the sensitivity of the read-out circuit, cancels out the gain fluctuations in the system, and overcomes the effects of motion artifacts on measurements.

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Hui Li, Boxiao Liu, Yongfu Li, Guoxing Wang, Yong Lian. 2018-10-02. A High Accuracy and High Sensitivity System Architecture for Electrical Impedance Tomography System. https://arxiv.org/abs/1810.09517

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