A power-efficient bio-potential acquisition device with DS-MDE sensors for long-term healthcare monitoring applications

Chia Lin Chang, Chih Wei Chang, Hong Yi Huang, Chen Ming Hsu, Chia Hsuan Huang, Jin-Chern Chiou, Ching Hsing Luo*

*Corresponding author for this work

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

This work describes a power-efficient bio-potential acquisition device for long-term healthcare applications that is implemented using novel microelectromechanical dry electrodes (MDE) and a low power bio-potential processing chip. Using micromachining technology, an attempt is also made to enhance the sensing reliability and stability by fabricating a diamond-shaped MDE (DS-MDE) that has a satisfactory self-stability capability and superior electric conductivity when attached onto skin without any extra skin tissue injury technology. To acquire differential bio-potentials such as ECG signals, the proposed processing chip fabricated in a standard CMOS process has a high common mode rejection ratio (C.M.R.R.) differential amplifier and a 12-bit analog-to-digital converter (ADC). Use of the proposed system and integrate simple peripheral commercial devices can obtain the ECG signal efficiently without additional skin tissue injury and ensure continuous monitoring more than 70 hours with a 400 mAh battery.

Original languageEnglish
Pages (from-to)4777-4793
Number of pages17
JournalSensors
Volume10
Issue number5
DOIs
StatePublished - 1 May 2010

Keywords

  • Bio-potential acquisition chip
  • DS-MDE
  • Long-term ecg monitoring

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