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: 
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