| 摘要 |
PROBLEM TO BE SOLVED: To provide a drowsiness calculation device capable of accurately calculating drowsiness in consideration of a peripheral environment.SOLUTION: In a smartphone 1, I/F18 acquires the heart rate of a subject measured by a heart rate sensor 19 and the measurement time, a state determination part 11 determines the activity state of the subject and a GPS receiver 12 obtains present position information of the smartphone 1 so as to transmit it to a server 2. In the server 2, an external communication part 23 acquires weather information on the current place of the subject, a correction part 24 reads a drowsiness reference heart rate of the subject from a drowsiness reference heart rate table 21 of the subject according to the activity state and the current time to correct it on the basis of the weather information. The server 2 transmits the drowsiness reference heart rate which has been corrected (corrected drowsiness reference heart rate) to the smartphone 1 and a drowsiness degree calculation part 16 of the smartphone 1 calculates the degree of drowsiness of the subject on the basis of the corrected drowsiness reference heart rate and the heart rate acquired by I/F18.SELECTED DRAWING: Figure 1 |
