| TRIGGER ALGORITHM OF VEHICLE AUTOMATIC CRASH NOTIFICATION SYSTEM |
| W. XIAO, Z. LI, W. CHEN, Y. LU, H. JIANG |
| Jiangsu University |
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| ABSTRACT |
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The Automatic Crash Notification (ACN) system is an effective technology to decrease the crash response time, improve the level of post-accident rescue and alleviate the severity of injuries. To realize this system, a vehicle terminal is developed. And based on a moving window integral algorithm, the trigger algorithm of ACN system is designed. By comparing the effect of different window widths on the trigger algorithm, we select the window width of the moving window integral algorithm as 8 ms. After system is triggered, different notify types was determined according to the change of velocity in the moving window. A sled impact simulation test shows that the impact can be identified rapidly and also the notify types can be judged by the trigger algorithm. A vehicle road test proves that the ACN system has no false trigger cases. The outcomes of this study support identifications of accidents and crash severities for both occupants and emergency centers. |
| Key Words:
Automatic crash notification system, Trigger algorithm, Moving window, Sled test |
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