DocumentCode :
685417
Title :
A non-contact biopotential sensing system with motion artifact suppression
Author :
Haibing Su ; Hao Liu ; Shih-Hung Weng ; Hui Wang ; Presswala, Aliasgar ; Hao Zhuang ; Jeng-Hau Lin ; Mercier, Patrick ; Chung-kuan Cheng
Author_Institution :
Dept. of Comput. Sci. & Eng., Univ. of California, San Diego, La Jolla, CA, USA
Volume :
2
fYear :
2013
fDate :
15-17 Nov. 2013
Firstpage :
314
Lastpage :
318
Abstract :
This paper describes a wearable sensing system to monitor biopotentials via noncontact capacitive sensors that are suitable for long-term and ambulatory monitoring applications. To overcome motion-induced measurement artifacts typically encountered in such systems, a motion artifact suppression technique is introduced. Specifically, a sensor that consists of a pair of physically-interleaved capacitive channels is designed to have different amounts of parasitic input capacitance, creating channel-specific outputs that depend on the input coupling capacitance itself. Differences in output channel results can then be placed through a digital reconstruction filter to re-create the original biopotential with attenuated motion artifacts. To validate the system concept, a wireless ECG sensing system is designed. Simulation results indicate that motion-induced signal distortion is reduced by over 14X after reconstruction.
Keywords :
bioelectric potentials; biomechanics; capacitive sensors; electrocardiography; filtering theory; medical signal processing; patient monitoring; signal reconstruction; ambulatory monitoring; attenuated motion artifacts; channel-specific outputs; digital reconstruction filter; input coupling capacitance; long-term monitoring; motion artifact suppression; motion-induced measurement artifacts; motion-induced signal distortion; noncontact biopotential sensing system; noncontact capacitive sensors; parasitic input capacitance; physically-interleaved capacitive channels; wearable sensing system; wireless ECG sensing system; Biomedical monitoring; Capacitance; Electrocardiography; Electrodes; Monitoring; Noise; Sensors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, Circuits and Systems (ICCCAS), 2013 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4799-3050-0
Type :
conf
DOI :
10.1109/ICCCAS.2013.6765345
Filename :
6765345
Link To Document :
بازگشت