| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drowse determining device which precisely determines a driver's drowsing state. Ž<P>SOLUTION: The drowse determining device 1 receives a traveling road shape of the vehicle 10 via a GPS (Global Positioning System) terminal 5 and an ECU 6 collects a traveling trajectory of the vehicle 10 and applies frequency analysis to difference values between the traveling trajectory and the traveling road shape. That is, the frequency analysis is performed immediately after the only frequency components resulted from correcting operations are extracted by removing effects caused by the road shape. Accordingly, the driver's drowsing state is precisely determined by determining his/her drowsing state based on the frequency analysis result. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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