| 摘要 |
<p>PROBLEM TO BE SOLVED: To draw attention when view distribution of an operator (driver) becomes unsound view distribution such as deflected view and fixed view. SOLUTION: View positions of a driver 32 during driving are detected, and view maps 71-73 indicating frequency distribution in the view direction for the past five seconds, for example, are formed. A sum of squares deviation between the formed view maps 71-73 and the view map 71 which is provided with sound view distribution is calculated, and when the sum of squares deviation is the predetermined value or more, it is assumed that the driver 32 dose not carry out sound view distribution, and an alarm and the like is given. The view map 72 represents a view map in case of deflected view driving, while the view map 73 represents a view map in case of a fixed view driving.</p> |
