Koukourlis C S, Kyriacou G A, Sahalos J N
Department of Electrical Engineering, Demokritos University of Thrace, Xanthi, Greece.
IEEE Trans Biomed Eng. 1995 Jun;42(6):632-6. doi: 10.1109/10.387203.
A 32-electrode data collection system for Electrical Impedance Tomography (EIT) will be presented. In this system, the demodulator is a multiplexed sample and hold (S&H) circuit followed by a voltage difference stage. This configuration provides high CMRR due to the low (almost DC) operating frequency of the signals the difference stage is required to process.
将介绍一种用于电阻抗断层成像（EIT）的32电极数据采集系统。在该系统中，解调器是一个多路复用采样保持（S&H）电路，其后接一个电压差级。由于差分级需要处理的信号工作频率较低（几乎是直流），这种配置提供了高共模抑制比（CMRR）。
