According to the present invention, a drowsiness estimating device (100) is provided with: a biological information acquiring unit (110) that acquires biological information pertaining to a person; an auxiliary information acquiring unit (120) that acquires auxiliary information including at least one among five senses information which the person senses and emotion information which indicates the person's emotion; and a drowsiness estimating unit (130) that estimates the person's drowsiness on the basis of the biological information and the auxiliary information.
DROWSINESS ESTIMATING DEVICE AND AWAKENING INDUCING DEVICE