| 摘要 |
<p>PURPOSE:To prevent a first alarm from becoming troublesome and useless by inhibiting the output of the first alarm for a prescribed time, at least, after the interruption of the second alarm. CONSTITUTION:When inter-vehicle distance D rapidly becomes more than safe inter-vehicle distance D1 at a time t3 during the voice output of the second alarm, it is judged that a condition is not the generation condition of the second alarm. Therefore, the second alarm is interrupted in confirming whether it is the generation condition of the first alarm or not in accordance with its NO. At this time, a timer continues its clocking with the generation start point of time t11 of a last phrase D as a start point. When inter-vehicle distance D1 becomes equal to a below safe inter-vehicle distance D1 at a time t4 again, it is judged that the condition is the generation condition of the first alarm and the clocked time ta of the timer at the point of time is checked in accordance with its YES. The voice output of the first alarm is executed when clocked time ta is more than five seconds and it is not executed unless clocked time ta is more than five seconds.</p> |
