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A 104 mW Electrical Impedance Tomography SoC for Portable Real-Time Lung V entil
一款用于便携式实时肺部通气监测的104 mW电阻抗断层成像SoC。
0.18 µm CMOS, 1.8V, 10.4 mW, 20 frames/s
电阻抗断层成像SoC便携式监测肺部通气实时成像
▸采用T-switch实现60 dB以上的高电极间隔离
▸I/Q信号生成与解调获取图像实部和虚部
▸片上快速解调方案降低ADC速度要求以实现低功耗
Abstract
An electrical impedance tomography (EIT) SoC is
proposed for the portable real-time lung ventilation monitoring
system. The proposed EIT SoC is in tegrated into belt-typefabric
system with 32 electrodes and can show the dynamic images of the
lung ventilation on the mobile devi ces. To get high fidelity images,
a T-switch is adopted for high off-isolation between electrodes
more than 60 dB, and I/Q signal generation and demodulation can
obtain both real and imaginary part of images. For the real-t