Abstract:

 An integration automotive active-safety assistance-driving system, named four-in-one, was designed with less vehicle-interior-space and with less miss-alarms. The four-in-one system included four typical automotive safety systems, which are lane departure warning system, forward collision warning system, blind spot detection system, and active preload safety belt. A control strategy was developed with a control-instruction priority being determined by controller-area-network (CAN) communication-protocol based on time-to-collision (TTC) signal to complete critical-reminder and grading-pretension by advanced safety belt. A real vehicle with the integration system was tested on highway field in different weathers. The results show that the “four-in-one” system can avoid frequent alarms and simultaneous alarms with driver reminding and restricting with less driver's wrong judgments. Therefore, the injury-risk in traffic accidents can be reduced for drivers and passengers.

Key words: automotive active safety, driver assistance control strategy, integrated solutions, time to collision (TTC), field tests, injury risk