寝床内温度フィードバック機能付きエアーコントロールふとんの開発

概要

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In this study, we developed a futon with a ventilation mechanism and an air-control method that measures the temperature inside the bed and maintains a comfortable temperature (32±2℃) using feedback control. We verified the performance of the temperature control system and evaluated the sleep quality of four participants by measuring PSG (polysomnogram). The results showed that the in-bed temperature was kept in the "comfortable temperature" zone 99.84% of the time when the subjects were in the bed using the feedback control method developed. We also confirmed the following tendencies : (1) When the air-controlled method was being used, sleep latency was marginally shortened (p<0.1), meaning that the subjects fell asleep more easily ; (2) the ratio of "SWS (slow wave sleep, i.e., deep sleep)" significantly increased (p<0.05), indicating that sleep rhythms improved ; and (3) the effectiveness of sleep was higher than that of the method without the air-control method. These results indicate that the air-control method developed is effective for increasing the quality of sleep.
社団法人日本生体医工学会の論文
2004-12-10