SLEEP QUALITY EVALUATION APPARATUS

PROBLEM TO BE SOLVED: To provide an apparatus capable of evaluating the quality of sleep of an infant by quantitatively measuring the ratios of respective sleep stages of active sleep, quiet sleep and indeterminate sleep of the infant. SOLUTION: The sleep quality evaluation apparatus is composed of: a biological vibration detecting means for detecting biological vibration of the infant; a biological signal detecting means for detecting a biological signal from an output signal of the biological vibration detecting means; a biological signal intensity dispersion value computing means for computing the dispersion value for a prescribed time of the intensity of the biological signal acquired by the biological signal detecting means; a sleep stage determining means for determining the sleep stage of the infant from the dispersion value of the intensity of the biological signal acquired by the biological signal intensity dispersion value computing means; and a sleep evaluation means for determining the quality of sleep of the infant from the sleep stage of the infant acquired by the sleep stage determining means. The quality of sleep of the infant is evaluated by determining the quiet sleep, active sleep and indeterminate sleep. COPYRIGHT: (C)2011,JPO&INPIT