期刊
SENSORS
卷 10, 期 5, 页码 4777-4793出版社
MDPI
DOI: 10.3390/s100504777
关键词
DS-MDE; bio-potential acquisition chip; long-term ECG monitoring
资金
- Taiwan National Science Council [97-2220-E-009-043]
- Taiwan Department of Health Cancer Research Center of Excellence [DOH99-TD-C-111-005]
- Taiwan Department of Health Clinical Trial and Research Center of Excellence [DOH99-TD-B-111-004]
- National Chip Implementation Center (CIC), Taiwan
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.
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