Study on the Algorithm for Separation of Heartbeat and Respiratory Signals Based on Radar Non-contact Detection
ZHANG Hua1, SUN Na-na2, ZHANG Peng-fei1, LI Sheng1, JIAO Teng1, ZHANG Yang1, LV Hao1, YU Xiao1, MA Teng1, XUE Hui-jun1, LU Guo-hua1, WANG Jian-qi1
1.Teaching and Research Section of Electronics, School of Biomedical Engineering, The Fourth Military Medical University, Xi'an Shanxi 710032, China; 2.Department of Information, Tangdu Hospital, The Fourth Military Medical University, Xi'an Shanxi 710038, China
Abstract:In order to separate the breathing and heartbeat signals from biological radar effectively so that the physiological characteristic parameters (respiration rate and heart rate ) can be real-time monitored, this paper proposed a LMS adaptive harmonic cancellation algorithm by extracting the harmonic combination of the respiratory signals as reference input and the body motion signals detected by biological radar as original input based on adaptive noise canceller. Simulation results showed that breathing and heartbeat signals can be separated in real time with the proposed algorithm which is simple and easy to be implemented.
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ZHANG Hua, SUN Na-na, ZHANG Peng-fei, LI Sheng, JIAO Teng, ZHANG Yang, LV Hao, YU Xiao, MA Teng, XUE Hui-jun, LU Guo-hua, WANG Jian-qi. Study on the Algorithm for Separation of Heartbeat and Respiratory Signals Based on Radar Non-contact Detection. China Medical Devices, 2013, 28(11): 9-11.
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