TY - GEN
T1 - Design a Moving Artifacts Detection System for a Radial Pulse Wave Analyzer
AU - Lee, J.
AU - Woo, Y. J.
AU - Jeon, Y. J.
AU - Lee, Y. J.
AU - Kim, Jong Yeol
PY - 2009
Y1 - 2009
N2 - Despite recent studies on development of pulse wave analyzers and needs for commercializing them, the reproducibility is one of the most controversial issues as ever. Because the pulse pressure value, which is one of the important parameters to evaluate reproducibility, is very vulnerable to moving artifacts, the reproducibility can not be obtained easily. In this paper, we designed a moving artifacts detection system for a radial pulse wave analyzer so that it can be robust to this kinds of artifacts by excluding the contaminated parts from the pulse wave signal to be analyzed. This moving artifacts detection system was designed to consist of a three-axis accelerometer, an electromyography amplifier and a two-axis tilt sensor. To assess the suitability of the system, we examined the characteristics of each sensor's output signals with regard to the three motions such as extension, flexion and rotation. And, we also examined the each sensor's response to the highfrequency and low-frequency moving artifacts while the pulse wave signal was acquired from a pressure sensor for the pulse diagnosis. From these results, we could find that the response to subject's motions would be reflected in electromyography signal first, accelerometer signals and tilt sensor sequentially. And, the facts that a stable pulse wave can be acquired in two seconds after high frequency or low frequency motions ended were also found. Consequently, based on these findings, we set up some rules on the moving artifacts detection and designed an algorithm which is fit for our moving artifacts detection system.
AB - Despite recent studies on development of pulse wave analyzers and needs for commercializing them, the reproducibility is one of the most controversial issues as ever. Because the pulse pressure value, which is one of the important parameters to evaluate reproducibility, is very vulnerable to moving artifacts, the reproducibility can not be obtained easily. In this paper, we designed a moving artifacts detection system for a radial pulse wave analyzer so that it can be robust to this kinds of artifacts by excluding the contaminated parts from the pulse wave signal to be analyzed. This moving artifacts detection system was designed to consist of a three-axis accelerometer, an electromyography amplifier and a two-axis tilt sensor. To assess the suitability of the system, we examined the characteristics of each sensor's output signals with regard to the three motions such as extension, flexion and rotation. And, we also examined the each sensor's response to the highfrequency and low-frequency moving artifacts while the pulse wave signal was acquired from a pressure sensor for the pulse diagnosis. From these results, we could find that the response to subject's motions would be reflected in electromyography signal first, accelerometer signals and tilt sensor sequentially. And, the facts that a stable pulse wave can be acquired in two seconds after high frequency or low frequency motions ended were also found. Consequently, based on these findings, we set up some rules on the moving artifacts detection and designed an algorithm which is fit for our moving artifacts detection system.
KW - EMG
KW - accelerometer
KW - moving artifacts
KW - radial pulse waveform
KW - tilt sensor
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U2 - 10.1007/978-3-540-92841-6_125
DO - 10.1007/978-3-540-92841-6_125
M3 - Conference contribution
AN - SCOPUS:84891959850
SN - 9783540928409
T3 - IFMBE Proceedings
SP - 508
EP - 510
BT - 13th International Conference on Biomedical Engineering - ICBME 2008
T2 - 13th International Conference on Biomedical Engineering, ICBME 2008
Y2 - 3 December 2008 through 6 December 2008
ER -