A high frame rate wearable EIT system using active electrode ASICs for lung respiration and heart rate monitoring
Article
Wu, Y., Jiang, D., Bardill, A., de Gelidi, S., Bayford, R. and Demosthenous, A. 2018. A high frame rate wearable EIT system using active electrode ASICs for lung respiration and heart rate monitoring. IEEE Transactions on Circuits and Systems I: Regular Papers. 65 (11), pp. 3810-3820. https://doi.org/10.1109/TCSI.2018.2858148
| Type | Article |
|---|---|
| Title | A high frame rate wearable EIT system using active electrode ASICs for lung respiration and heart rate monitoring |
| Authors | Wu, Y., Jiang, D., Bardill, A., de Gelidi, S., Bayford, R. and Demosthenous, A. |
| Abstract | A high specification, wearable, electrical impedance tomography (EIT) system with 32 active electrodes is presented. Each electrode has an application specific integrated circuit (ASIC) mounted on a flexible printed circuit board, which is then wrapped inside a disposable fabric cover containing silver-coated electrodes to form the wearable belt. It is connected to a central hub that operates all the 32 ASICs. Each ASIC comprises a high- performance current driver capable of up to 6 mAp−p output, a voltage buffer for EIT and heart rate signal recording as well as contact impedance monitoring, and a sensor buffer that provides multi-parameter sensing. The ASIC was designed in a CMOS 0.35-μm high-voltage process technology. It operates from ±9-V power supplies and occupies a total die area of 3.9 mm2. The EIT system has a bandwidth of 500 kHz and employs two parallel data acquisition channels to achieve a frame rate of 107 frames/s, the fastest wearable EIT system reported to date. Measured results show that the system has a measurement accuracy of 98.88% and a minimum EIT detectability of 0.86 Q/frame. Its successful operation in capturing EIT lung respiration and heart rate biosignals from a volunteer is demonstrated. |
| Research Group | Biophysics and Bioengineering group |
| Publisher | Institute of Electrical and Electronics Engineers |
| Journal | IEEE Transactions on Circuits and Systems I: Regular Papers |
| ISSN | 1549-8328 |
| Electronic | 1558-0806 |
| Publication dates | |
| Online | 16 Aug 2018 |
| 02 Oct 2018 | |
| Publication process dates | |
| Deposited | 30 Oct 2019 |
| Accepted | 29 Jun 2018 |
| Output status | Published |
| Accepted author manuscript | |
| Copyright Statement | © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. |
| Digital Object Identifier (DOI) | https://doi.org/10.1109/TCSI.2018.2858148 |
| Language | English |
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