| 摘要 |
PURPOSE:To accurately count the pulse per unit detection time, by providing a plurality of circuits, which start count of unit detection time at each input of pulse and counts the number of pulses in the unit detection time. CONSTITUTION:A pulse train from a steering angle sensor 1 to detect sudden steering is shared into terminals A-D sequentially with a switching circuit 2, and starts a monostable multivibrator circuits 3-6 counting the unit detection time. Counters 11-14 count pulses from the sensor 1 incoming during the count of the said circuits 3-6 sequentially started at each incoming of the pulse via gates 7-10. This counted value is given to an alarm section 16, which outputs alarm as sudden steering when any of the counters 11-14 reaches a prescribed value. |
