A research on driver's psychological burden under the condition of vehicle emergent obstacle avoidance

To reveal the change in driver's psychological burden under the condition of emergent obstacle avoidance, starting from the angle of vehicle operation safety, tests on driver's physiological responses under emergent obstacle avoidance are conducted by using Holter monitor, Frecord data collection system and dynamic GPS. Based on multivariate linear regression statistics, test data are fitted to get the multivariate linear regression models of driver's heart rate variation against the distance between vehicle and front obstacles in the same lane, vehicle speeds, the maximum braking pedal velocity and the maximum steering wheel angular velocity with the relationships between parameters analyzed. The results indicate that the distance between vehicle and obstacle has larger effects on the maximum steering wheel angular velocity and the maximum braking pedal velocity than vehicle speed has, and the driver's psychological burden increases with the rise in vehicle speed and the reduction in distance between vehicle and obstacle.