Longitudinal collision warning system based on driver braking characteristics

Abstract

A hierarchical braking control strategy based on driver braking acceleration analysis is proposed in this paper. Firstly the vehicle state data of the driver during braking collected by driving simulator. Then by analyzing the acceleration of the vehicle during braking, the driver's desired acceleration during collision avoidance is determined, and the TTC threshold is divided according to this desired acceleration value. The two-level warning and two-level braking collision avoidance strategies are designed based on the second-order collision time model. Finally, the overall simulation model of the collision warning system is constructed in Simulink/ Carsim. The co-simulation test results demonstrate that the hierarchical braking and warning strategy of this system can effectively avoid crash.