|発明の名称||DEVICE AND METHOD FOR ESTIMATING ATTENTION DECREASE OF DRIVER|
PROBLEM TO BE SOLVED: To provide a device that can estimate an attention decrease of a driver while driving with high probability and in real time.
SOLUTION: A device for estimating an attention decrease of a driver according to the present invention comprises: an acceleration sensor 4 for measuring an acceleration in a lateral direction with respect to a traveling direction of a vehicle; and calculating means 321 for calculating an absolute value of a jerk based on the acceleration measured by the acceleration sensor 4 and for estimating an attention decrease of a driver based on the calculated absolute value of the jerk. The calculating means 321 sets a detection window between a first time and a second time longer than the first time from a time when the absolute value of the jerk exceeds a predetermined threshold in a time axis. The setting of the detection window is repeated starting from when the absolute value of the jerk included in the detection window exceeds the threshold value; and when the setting of the detection window is performed continuously, the calculating means estimates that the attention of the driver has decreased.
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