標題: | Power-efficient wireless sensor for physiological signal acquisition |
作者: | Chang, Chia-Lin Chang, Chih-Wei Hsu, Chen-Ming Luo, Ching-Hsing Chiou, Jin-Chern 電控工程研究所 Institute of Electrical and Control Engineering |
關鍵字: | MEMS sensor;biotelemetry;signal processing;power-efficient |
公開日期: | 1-四月-2009 |
摘要: | This work presents a power-efficient wireless sensor implemented using microelectromechanical system (MEMS)-based dry electrodes (MDE) and a ZigBee protocol chip for physiological signal acquisition. To improve signal quality with low electrode-skin interface impedance, a silicon-based MDE is fabricated via micromachining technology. The proposed wireless sensor can provide four different channels for up to 10 kHz bandwidth, 10-bit resolution biomedical signal transmissions. Different from other systems, the proposed wireless sensor employs a novel power management method for physiological signals to reduce power consumption. The proposed wireless sensor successfully transmits electrocardiogram (ECG) signals and four-channel electroencephalogram (EEG) signals with power consumptions of 92.7 and 56.8 mW respectively. It consumes 46% less power than the original sensor without power management (173 mW) in ECG acquisition and 67% less power in EEG acquisition. The circuit printed-circuit-band area in the proposed wireless sensor is 3.5 x 4.5 cm, suitable for various portable biomedical applications. (C) 2009 Society of Photo-Optical Instrumentation Engineers. [DOI: 10.1117/1.3124190] |
URI: | http://dx.doi.org/10.1117/1.3124190 http://hdl.handle.net/11536/7388 |
ISSN: | 1537-1646 |
DOI: | 10.1117/1.3124190 |
期刊: | JOURNAL OF MICRO-NANOLITHOGRAPHY MEMS AND MOEMS |
Volume: | 8 |
Issue: | 2 |
結束頁: | |
顯示於類別: | 會議論文 |