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    • 2. 发明专利
    • Driving fatigue level determination device
    • JP5605187B2
    • 2014-10-15
    • JP2010261179
    • 2010-11-24
    • 株式会社デンソー
    • 真也 松永
    • G08G1/16A61B5/16B60K28/06G08G1/00
    • PROBLEM TO BE SOLVED: To provide a driving fatigue degree determination device capable of enhancing accuracy for determining a fatigue degree of a driver who drives a vehicle.SOLUTION: A driving fatigue degree determination device 1 determines that the fatigue degree of the driver is accumulated by considering both of a case in which it is estimated that the fatigue degree of the driver is accumulated when the vehicle enters from a road of a wide road width to a road of a narrow road width, etc., for instance, and a case in which it is estimated that the fatigue degree of the driver is recovered when the vehicle enters from the road of the narrow road width to the road of the wide road width, for instance. The driving fatigue degree determination device 1 integrates the fatigue degree per unit time to a present accumulated fatigue degree when it is determined that the fatigue degree of the driver is accumulated while subtracts the fatigue degree per unit time from the present accumulated fatigue degree when it is determined that the fatigue degree of the driver is recovered.