| 摘要 |
<p>PURPOSE:To enable the issuing of accurate warning for lowering of attentiveness by a method wherein a long-period continuing warning is generated when the driving is continued covering the predetermined time, and a monotonous driving warning is generated when monotonous driving is continued until the another predetermined time. CONSTITUTION:The counting value of up/down counter 4 is increased when the driving sensor 1 indicates 1, or decreased when the driving sensor 1 indicates 0. When said counting value becomes larger than the reference value in the reference signal generator 8, the output 1 is generated by the comparator 6, then the long-time driving warning is generated by warning unit 10. Meanwhile, the output 1 is generated by the driving sensor 2 whenever such driving operation as handle operation, brake operation, and winker operation, etc. is performed. The none operation counter 5 continually attemts to increase its counting value during the driving, but the counter 5 is reset whenever the output 1 is generated by the driving operation senser 2. When the counting value exceeds the reference value in the reference signal generator 9, the output 1 is generated by the comparator 7. The monotonous driving warning is generated by the warning unit 11.</p> |
