| 摘要 |
PROBLEM TO BE SOLVED: To accurately detect a sleeping state by calculating a trend curve for showing an increase/decrease tendency of a time change in time series of living body information such as the heartbeat number, and calculating the trend curve by using a window function of preset time when judging a sleeping state on the basis of the curve. SOLUTION: A measuring part 1 is arranged to measure a living body information value such as the heartbeat number per unit time as a living body information measured value, and a trend curve for showing a tendency of a time change in time series of the living body information value is calculated by a trend curve calculating part 3. An increase in the living body information value in each measured time is calculated by an increase calculating part 4 from the living body information value and the trend curve to calculate a fluctuation degree of the living body information value in a specific time before each measured time by a fluctuation degree calculating part 5. An appearance probability of respective sleeping states is calculated by a calculating part from a combination of the increase and the fluctuation degree of the living body information value, and a state of adopting a maximum numeric value among the appearance probability of the respective sleeping states is estimated as a sleeping state of the corresponding measured time by an estimating part 8. |
