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    • 74. 发明公开
    • ALERTNESS DEVICE, SEAT, AND METHOD FOR DETERMINING ALERTNESS
    • WACHSAMKEITSVORRICHTUNG,SITZ UND VERFAHREN ZUR BESTIMMUNG VON WACHSAMKEIT
    • EP3061396A4
    • 2016-11-09
    • EP14855514
    • 2014-10-20
    • TS TECH CO LTDPUBLIC UNIV CORP NAGOYA CITY UNIV
    • SUGIYAMA SHINJIITO TAKAYOSHIYOKOYAMA KIYOKOTAKAHASHI ISSEY
    • A61B5/18A61B5/00A61B5/024A61B5/0245A61B5/0452A61B5/0456A61B5/16
    • A61B5/18A61B5/02405A61B5/0245A61B5/02455A61B5/0456A61B5/168A61B5/6893A61B5/7264A61B2503/22B60W40/08
    • Provided are an alertness device configured such that a load is low in the processing for alertness determination and that the accuracy in alertness determination is high, a seat including the alertness device, and an alertness determination method. The alertness device includes a heart rate sensor configured to obtain an electrocardiographic signal of a person, a calculation unit configured to calculate the electrocardiographic signal obtained from the heart rate sensor, a waveform generation unit configured to generate an RRI waveform from an electrocardiographic waveform of the electrocardiographic signal, and a determination unit configured to determine the alertness of the person based on the electrocardiographic signal. The calculation unit replicates the same number of RRI waveforms as that of anchors, each anchor being a point where a certain RRI is shorter than the next preceding RRI. Then, the calculation unit moves the time axes of the replicated RRI waveforms such that the anchors of the replicated RRI waveforms are in phase with each other, and calculates a PRSA signal defined as an RRI average for each time axis. The determination unit determines the alertness of the person based on the RRIs and the PRSA signals.
    • 提供了一种警报装置,其被配置为使得在用于警觉性确定的处理中的负载低,并且警觉性确定的准确度高,包括警觉性装置的座椅和警觉性确定方法。 所述警觉性装置包括被配置为获得人的心电图信号的心率传感器,被配置为计算从所述心率传感器获得的所述心电图信号的计算单元,被配置为从所述心律图像的心电图波形生成RRI波形的波形生成单元 心电图信号,以及确定单元,被配置为基于心电图信号确定人的警觉性。 计算单元复制与锚点相同数量的RRI波形,每个锚点是某个RRI短于下一个RRI的点。 然后,计算单元移动复制的RRI波形的时间轴,使得复制的RRI波形的锚点彼此同相,并计算定义为每个时间轴的RRI平均值的PRSA信号。 确定单元基于RRI和PRSA信号确定人的警觉性。