| 摘要 |
PROBLEM TO BE SOLVED: To provide a drowsiness calculation device capable of accurately calculating drowsiness.SOLUTION: A state determination part 2 determines an activity state of a subject from the heart rate of the subject input in I/F7 and measured by a heart rate sensor 11 and positional information and acceleration information input in I/F8. A drowsiness reference heart rate table 4 stores a drowsiness reference heart rate of the subject for each time point and activity state. A drowsiness degree calculation part 5 calculates the degree of drowsiness of the subject on the basis of a heart rate and a heart rate fluctuation acquired by a biological information acquisition part, a drowsiness prediction parameters a, b, corresponding to the activity state of the subject determined by the state determination part 2, the current time and the drowsiness reference heart rate stored in drowsiness reference heart rate table 4.SELECTED DRAWING: Figure 1 |
