PROBLEM TO BE SOLVED: To estimate drowsiness with little erroneous determination.SOLUTION: A wakefulness estimation device includes an eye opening acquisition part for acquiring an opening degree of an eye of a subject. The wakefulness estimation device includes a variation calculation part for calculating variation in opening degree of an eye in a prescribed time. The wakefulness estimation device includes a drowsiness determination part for determining drowsiness using the calculated variation and a prescribed threshold.SELECTED DRAWING: Figure 1
【課題】誤判定の少ない眠気推定ができる。【解決手段】覚醒度推定装置は、対象者の眼の開度を取得する眼開度取得部を有する。覚醒度推定装置は、所定時間内の眼の開度のばらつきを算出するばらつき算出部を有する。覚醒度推定装置は、算出されたばらつきと所定の閾値とを用いて眠気判定を行う眠気判定部を有する。【選択図】図1
WAKEFULNESS ESTIMATION DEVICE, WAKEFULNESS ESTIMATION METHOD AND WAKEFULNESS ESTIMATION SYSTEM
覚醒度推定装置、覚醒度推定方法及び覚醒度推定システム
2018-08-23
Patent
Electronic Resource
Japanese
IPC: | A61B DIAGNOSIS , Diagnostik / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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