التفاصيل البيبلوغرافية
| العنوان: |
A 1.4-m $\Omega$ -Sensitivity 94-dB Dynamic-Range Electrical Impedance Tomography SoC and 48-Channel Hub-SoC for 3-D Lung Ventilation Monitoring System. |
| المؤلفون: |
Kim, Minseo, Jang, Jaeeun, Kim, Hyunki, Lee, Jihee, Lee, Jaehyuck, Lee, Jiwon, Lee, Kyoung-Rog, Kim, Kwantae, Lee, Yongsu, Lee, Kyuho Jason, Yoo, Hoi-Jun |
| المصدر: |
IEEE Journal of Solid-State Circuits; Nov2017, Vol. 52 Issue 11, p2829-2842, 14p |
| مصطلحات موضوعية: |
ELECTRICAL impedance tomography, PULMONARY ventilation-perfusion scans, WIRELESS communications |
| مستخلص: |
A wearable electrical impedance tomography (EIT) system is proposed for the portable real-time 3-D lung ventilation monitoring. It consists of two types of SoCs, active electrode (AE)-SoC and Hub-SoC, mounted on wearable belts. The 48-channel AE-SoCs are integrated on flexible printed circuit board belt, and Hub-SoC is integrated in the hub module which performs data gathering and wireless communication between an external imaging device. To get high accuracy under the variation of conductivity, the dual-mode current stimulator provides the optimal frequency for time difference-EIT and frequency difference-EIT with simultaneous 4 k–128 kHz impedance sensing. A wide dynamic range instruments amplifier is proposed to provide 94 dB of wide dynamic range impedance sensing. In addition, the 48-channel AE system with the dedicated communication and calibration is implemented to achieve 1.4- \textm\Omega sensitivity of impedance difference in the in vivo environment. The AE-/Hub-SoCs occupy 3.2 and 1.3 mm2 in 65-nm CMOS technology and consume 124~\mu \textW and 1.1 mW with 1.2 V supply, respectively. As a result, EIT images are reconstructed with 90% of accuracy, and up to 10 frames/s real-time 3-D lung images are successfully displayed. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
