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

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dc.contributor.authorKim, Minseoko
dc.contributor.authorJang, Jaeeunko
dc.contributor.authorKim, Hyunkiko
dc.contributor.authorLee, Jiheeko
dc.contributor.authorLee, Jaehyuckko
dc.contributor.authorLee, Ji-Wonko
dc.contributor.authorLee, Kyoung-Rogko
dc.contributor.authorKim, Kwantaeko
dc.contributor.authorLee, Yongsuko
dc.contributor.authorLee, Kyuho Jasonko
dc.contributor.authorYoo, Hoi-Junko
dc.date.accessioned2017-11-20T08:24:43Z-
dc.date.available2017-11-20T08:24:43Z-
dc.date.created2017-11-14-
dc.date.created2017-11-14-
dc.date.issued2017-11-
dc.identifier.citationIEEE JOURNAL OF SOLID-STATE CIRCUITS, v.52, no.11, pp.2829 - 2842-
dc.identifier.issn0018-9200-
dc.identifier.urihttp://hdl.handle.net/10203/227044-
dc.description.abstractA 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-m Omega sensitivity of impedance difference in the in vivo environment. The AE-/Hub-SoCs occupy 3.2 and 1.3 mm2in 65-nm CMOS technology and consume 124 mu W 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.-
dc.languageEnglish-
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC-
dc.subjectINJURY-
dc.subjectDESIGN-
dc.subjectRECONSTRUCTION-
dc.subjectGREIT-
dc.titleA 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-
dc.typeArticle-
dc.identifier.wosid000413941800004-
dc.identifier.scopusid2-s2.0-85031790706-
dc.type.rimsART-
dc.citation.volume52-
dc.citation.issue11-
dc.citation.beginningpage2829-
dc.citation.endingpage2842-
dc.citation.publicationnameIEEE JOURNAL OF SOLID-STATE CIRCUITS-
dc.identifier.doi10.1109/JSSC.2017.2753234-
dc.contributor.localauthorYoo, Hoi-Jun-
dc.contributor.nonIdAuthorLee, Jaehyuck-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle; Proceedings Paper-
dc.subject.keywordAuthor3-D-imaging-
dc.subject.keywordAuthoractive electrode (AE)-
dc.subject.keywordAuthorelectrical impedance tomography (EIT)-
dc.subject.keywordAuthorimpedance spectroscopy-
dc.subject.keywordAuthorlung ventilation monitoring-
dc.subject.keywordAuthorreal-time imaging-
dc.subject.keywordAuthorwide dynamic range-
dc.subject.keywordPlusINJURY-
dc.subject.keywordPlusDESIGN-
dc.subject.keywordPlusRECONSTRUCTION-
dc.subject.keywordPlusGREIT-
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