| 摘要 |
A vehicle impact severity identification device comprises an acceleration detector for generating a vehicle impact acceleration signal. The impact severity identification circuit uses the acceleration signal generated by the acceleration detector and generates an impact severity identification signal at its output port. During an frontal impact, when the acceleration signal exceeds a predetermined start value, the impact severity identification circuit will identify whether the impact is a severe impact based upon a displacement generated from the acceleration signal during a predetermined period. If the impact is not a severe impact or cannot be determined, then the impact severity identification circuit will successively identify the impact severity based upon the displacement generated by the acceleration signal, a cumulated number of times that a jerk of the acceleration signal exceeds a threshold value, and the time interval that the jerk first exceeds the threshold value, until the identification signal is generated and outputted.
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