NDLI: A current-excited triple-time-voltage oversampling method for bio-impedance model for cost-efficient circuit system

Content Provider	IEEE Xplore Digital Library
Author	Yan Hong Yong Wang Wang Ling Goh Yuan Gao Lei Yao
Copyright Year	2015
Description	Author affiliation: Nanyang Technol. Univ., Singapore, Singapore (Yan Hong; Yong Wang; Wang Ling Goh) \|\| Inst. of Microelectron., A*STAR (Agency for Sci., Technol. & Res.), Singapore, Singapore (Yuan Gao; Lei Yao)
Abstract	This paper presents a mathematic method and a cost-efficient circuit to measure the value of each component of the bio-impedance model at electrode-electrolyte interface. The proposed current excited triple-time-voltage oversampling (TTVO) method deduces the component values by solving triple simultaneous electric equation (TSEE) at different time nodes during a current excitation, which are the voltage functions of time. The proposed triple simultaneous electric equations (TSEEs) allows random selections of the time nodes, hence numerous solutions can be obtained during a single current excitation. Following that, the oversampling approach is engaged by averaging all solutions of multiple TSEEs acquired after a single current excitation, which increases the practical measurement accuracy through the improvement of the signal-to-noise ratio (SNR). In addition, a print circuit board (PCB) that consists a switched current exciter and an analog-to-digital converter (ADC) is designed for signal acquisition. This presents a great cost reduction when compared against other instrument-based measurement data reported [1]. Through testing, the measured values of this work is proven to be in superb agreements on the true component values of the electrode-electrolyte interface model. This work is most suited and also useful for biological and biomedical applications, to perform tasks such as stimulations, recordings, impedance characterizations, etc.
Starting Page	1037
Ending Page	1040
File Size	718753
Page Count	4
File Format	PDF
ISSN	1557170X
e-ISBN	9781424492718
DOI	10.1109/EMBC.2015.7318542
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-08-25
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Current measurement Biological system modeling Biomedical measurement Mathematical model Integrated circuit modeling Impedance Voltage measurement
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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