The object of the present invention is to provide a device for judging a degree of awakening and a method for judging a degree of awakening which can more reliably detect weak sleepiness of people in action. The device for judging a degree of awakening (1) in accordance with the present invention comprises a heartbeat sensor (10) for acquiring a heartbeat signal from a driver and an ECU (20) for detecting sleepiness of the driver by processing the heartbeat signal. In the ECU (20), a heartbeat signal preprocessing section (21) for acquiring a heartbeat period time series from the heartbeat signal, a feature amount extracting section (22) for acquiring a heartbeat fluctuation low frequency component power from the heartbeat period time series, a sleepiness detecting section (23) for judging whether sleepiness occurs in the driver or not according the heartbeat fluctuation low frequency component power, a stimulus timing setting section (25) for setting a timing for imparting a stimulus for removing sleepiness to the driver according to the heartbeat fluctuation low frequency component power, and a sleepiness removing stimulus output section (26) for imparting the stimulus to the driver at thus set timing.
DEVICE FOR JUDGING DEGREE OF AWAKENING AND METHOD FOR JUDGING DEGREE OF AWAKENING
VORRICHTUNG ZUR BEURTEILUNG DES WACHHEITSGRADS UND VERFAHREN ZUR BEURTEILUNG DES WACHHEITSGRADS
DISPOSITIF DESTINÉ À ÉVALUER UN DEGRÉ D'ÉVEIL ET PROCÉDÉ DESTINÉ À ÉVALUER UN DEGRÉ D'ÉVEIL
2019-02-27
Patent
Electronic Resource
English
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