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《Laser & Infrared》 2017-01
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Application of adaptive filtering algorithm in extraction of heart rate using optoelectronic technology

TANG Yu;OU Jian-ping;WANG Wei;School of Computer and Communication Engineering,Changsha University of Science & Technology;Hu'nan Provincial Key Laboratory of Intelligent Processing of Big Data on Transportation,Changsha Univorsity of Science & Technology;School of Electronic Science and Technology,National University of Defense Technology;  
Aiming at the extraction of heart rate with photoplethysmography(PPG),because the detection circuit was complex and the system was easily interfered by movement,an effective real-time method of the heart rate was proposed.In order to realize the real-time monitoring of heart rate signal,the infrared light whose single wavelength was940 nm produced by light emitting diode was used,and the PPG signal of wrist was collected according to the photoplethysmography principle.An adaptive filtering method was proposed to weaken the movement interference,and the three-axis accelerometer was used to obtain noise signal,which could eliminate the motion artifacts.The experiments show that the designed system is consistent with the medical monitor,and the adaptive filtering algorithm is more accurate than the traditional fast Fourier transform.In the allowed error range,this method can be used in real-time heart rate monitoring.
【CateGory Index】: TN713;TN29
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