| CPC A61B 5/4812 (2013.01) [A61B 5/24 (2021.01); A61B 5/4815 (2013.01)] | 14 Claims |
|
1. A device for analysis of sleep time using a radar, comprising:
a transceiver configured to transmit a radar signal toward a subject and receive the radar signal reflected from the subject;
a breathing signal collection unit configured to collect a breathing signal of the subject based on the radar signal;
a first sleep time detection unit configured to detect a first sleep time during which the subject is in a stable presence state from the breathing signal based on a presence discriminator for distinguishing the stable presence state from an absence state and a movement state for a plurality of set-up environment patterns;
a windowing likelihood calculation unit configured to calculate a windowing likelihood indicating a degree of time during which the stable presence state is maintained out of a time window based on the first sleep time;
a second sleep time detection unit configured to detect a second sleep time during which the windowing likelihood is equal to or greater than a likelihood threshold value;
a sleep continuity analysis unit configured to:
analyze sleep continuity from the second sleep time considering a plurality of predetermined arousal-integrated times, and
integrate an arousal time included in the second sleep time into a continuous sleep time when the arousal time is shorter than any one of the plurality of arousal-integrated times; and
a final sleep time determination unit configured to determine a final sleep time of the subject based on the second sleep time.
|