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    • 5. 发明授权
    • Predictive drowsiness alarm method
    • 预测性睡意报警方法
    • US09033892B2
    • 2015-05-19
    • US13245205
    • 2011-09-26
    • Yu Jen SuYen Hsien LeeKuang I Chang
    • Yu Jen SuYen Hsien LeeKuang I Chang
    • A61B5/02A61B5/024A61B5/18G08B21/06G08B31/00
    • A61B5/024A61B5/02405A61B5/18G08B21/06G08B31/00
    • A method for predicting drowsiness is disclosed. By obtaining average heart beat rate values of a driver, and according to the characteristics of the heart beat rate values over a period of time, the method is utilized to determine whether the human being is going to sleep. The method comprises the following steps: detecting a heart beat rate of a driver; calculating a curve of the heart beat rate average during a time interval of X minutes; determining an accumulated length of duration during which the calculated linear regression slope values are smaller than the predetermined slope value Z; determining whether the accumulated length of duration is greater than a time threshold T to generate a drowsiness detecting result; and determining whether to raise an alarm based on the drowsiness detecting result.
    • 公开了一种预测困倦的方法。 通过获得驾驶员的平均心跳速率值,并且根据一段时间内的心跳率值的特性,利用该方法来确定人是否要睡觉。 该方法包括以下步骤:检测驾驶员的心跳速率; 在X分钟的时间间隔内计算心跳速率平均曲线; 确定计算的线性回归斜率值小于预定斜率值Z的持续时间的累积长度; 确定持续时间的累积长度是否大于时间阈值T以产生嗜睡检测结果; 以及基于睡意检测结果确定是否发出报警。