Heart Rate Detection During Sleep Using a Flexible RF Resonator and Injection-Locked PLL Sensor
作者： Sung Woo Kim , Soo Beom Choi , Yong-Jun An , Byung-Hyun Kim , Deok Won Kim
DOI: 10.1109/TBME.2015.2439681
关键词: Acoustics 、 Injection locked 、 Sleep onset 、 Pulse (signal processing) 、 Heart rate 、 Radio frequency 、 Electronic engineering 、 Materials science 、 Phase-locked loop 、 Resonator 、 Sleep (system call)
摘要: Novel nonintrusive technologies for wrist pulse detection have been developed and proposed as systems sleep monitoring using three types of radio frequency (RF) sensors. The RF sensors heart rate measurement on are a flexible single resonator, array resonators, an injection-locked PLL resonator sensor. To verify the performance new systems, we compared rates between presleep time postsleep onset time. Heart ten subjects were measured during sleep. All devices detected at 0.2 to 1 mm distance from skin over clothes made cotton fabric. signals consistent with obtained by portable piezoelectric transducer reference. Then, confirmed that after significantly decreased before In conclusion, system can be utilized noncontact method measuring
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