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The purpose of this study is to develop a non-contact method to evaluate the heart rate and respiration rate simultaneously for elderly people at home, using single phtosensor. The respiration rate and the heart rate were detected from power spectra using Fast Fourie Transform(FFT)of the laser amplitude, which was reflected fro the chest walls of rabbits under He-Ne laser irradiation with and without a cloth on the chest. The rabbit with a cloth on the chest wall is a model for human with clothes. The heart rate evaluated by this method agreed well with the rate derived by electrocardiogram. The respiration rate also correlated with the manually measured respiration rate. This method appears promising as a non-invasive method for monitoring the heart and respilation rate of aged persons.
- ライフサポート学会の論文
ライフサポート学会 | 論文
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