Heart Rate Detection during Sleep Using the Flexible RF Resonator and Injection-Locked PLL Sensor  

出　　处：《Chinese Journal of Biomedical Engineering(English Edition)》2015年第2期50-50,共1页中国生物医学工程学报（英文版）

摘　　要：A novel non-intrusive technology for wrist pulse detection system has been developed and proposed for sleep monitoring using three types of radio frequency(RF)sensors.The three types of RF sensors for heart rate measurement on wrist,were the flexible RF single resonator,array resonators,and an injection-locked PLL resonator sensor.All three RF devices could detect heart rates at 0.2 to1 mm distance from the skin of the wrist over clothes made of cotton fabric during sleep.Heart ratesA novel non-intrusive technology for wrist pulse detection system has been developed and pro- posed for sleep monitoring using three types of radio frequency （RF） sensors. The three types of RF sensors for heart rate measurement on wrist, were the flexible RF single resonator, array resonators, and an injection-locked PLL resonator sensor. All three RF devices could detect heart rates at 0.2 to 1 mm distance from the skin of the wrist over clothes made of cotton fabric during sleep. Heart rates of 10 subjects were measured before and after sleep onset time using the device. The wrist pulse signals of a flexible RF single resonator were compared to the signals of a portable piezo-electric transducer as a reference. Then we confirmed that the heart rate after sleep onset time significantly decreased compared to before sleep. In conclusion, the RF system can be utilized as a non-contact non-intrusive method for measuring heart rates during sleep.

关 键 词：射频传感器 速率检测 注入锁定 谐振器 锁相环 睡眠 心脏 心率测量 

分 类 号：TN248.4[电子电信—物理电子学] TE626.25[石油与天然气工程—油气加工工程]