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KMID : 1137820140350060177
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의공학회지
2014 Volume.35 No. 6 p.177 ~ p.184
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Design of Unconstrained Baby Monitoring System Based on a Doppler Radar and an Air Mattress
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Yang Seong-Soo
Cho Sung-Pil
Park Ho-Dong
Lee Kyoung-Joung
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Abstract
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Continuous monitoring of heart rates and respiratory rates for newborns or infants is very important since the abnormal breathing and heart problems can threaten the life of newborns or infants. A noncontact baby monitoring system based on a Doppler radar and an air mattress was designed. The Doppler radar was used to acquire respiratory signals and the air mattress was employed to obtain heart rates. The performance of the designed system was evaluated using a commercialized infant simulator (SimbabyTM) and a respiration belt transducer was used to measure respiration rates as a reference. Results for respiratory rates revealed that the correlation coefficients between Iand Q-channel and the respiration belt were 0.84 and 0.91 and the mean ± standard deviations of errors between them were 1.66 ± 1.92 (bpm) and 0.88 ± 1.65 (bpm). Heart rates showed that the correlation coefficient between air mattress and set value of the simulator was 0.73 and the mean ± standard deviation of errors between them was 1.09 ± 3.45 (bpm). These results indicate that the designed system holds the potential as an effective monitoring tool for continuous monitoring heart rates and respiratory rates of newborns or infants.
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KEYWORD
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Baby monitor, Doppler radar, Air mattress, Unconstrained measurement, Infant simulator
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