高速公路立交区驾驶员视点分布特征研究

Research on Driver's Viewpoint Distribution Characteristics at Grade Separation of Expressway

为研究在不同匝道类型情况下驾驶员的视点分布规律,用Smart EyePro5.7型非侵入式眼动仪记录了在不同情况下驾驶员的眼球运动数据,并进行分析,主要采用的指标为瞳孔直径、XY视角、注视次数百分数、注视时间百分比、平均注视时间。结果表明:对于左转弯匝道,环圈式匝道给驾驶员的舒适感要好于半定向式匝道;环圈式匝道视点分布偏向于匝道内侧区域;在半定向式匝道的左转段和右转段内,驾驶员的心理负荷和视点分布较相似,视点都关注前方和左侧区域,并不受半定向式匝道内转向变化的影响。

In order to research the driver＇s viewpoint distribution pattern in different types of ramp, Smart EyePro5.7 non-intrusive Eye Tracking System is used to record the driver＇s eye movement data in different situations, then the data is analyzed. The mainly index include pupil diameter, XY perspective, the percentage of fixation frequency, the percentage of fixation time, average fixation duration. The results show that： for left turn ramp, ring type ramp is better than semi-directional pattern ramp; viewpoint distribution on the inside of the bend in ring type ramp; both turn left and right section of semi- directional type ramp, driver focuses on left side area, and has similar mental load and viewpoint distribution, which is not affected by the ramp shift.