基于模拟飞行任务下的眼动指标分析

分析眼动指标在定量测量飞机驾驶员的注意力分配规律和工作负荷变化中的作用。让4个被试者在飞行模拟器上完成了3个不同阶段的模拟飞行任务,同时用眼动仪器记录了注视、扫视、瞳孔尺寸方面的眼动指标,划分为座舱外景和内部仪表两个兴趣区域对数据进行了对比和认知分析。被试者在外景有更多的注视点、更多和更长的注视时间,在仪表上的平均瞳孔尺寸比外部视景要大,平均扫视幅度随任务难度增大而减小。眼动指标可以客观地反映驾驶员的注意力分配规律和工作负荷变化;视觉飞行规则下,飞行员主要从外景获取视觉信息,他的大部分注意力都集中在外景。

Analysis on Eye Movement Indices Based on Simulated Flight Task

Effects of eye movement indices on quantification of pilots' visual attention allocation and variation of workload were analyzed. Four experimented subjects accomplished three different stages of simulated flight task on a flight simulator. Fixation index, sweep index and pupil size were measured with eye movement measurement system. Data were analyzed in two Areas of Interest (AOI) of out view (OV) and instrument panel (IP). The results indicated that there were more fixed point, longer dwell time and less pupil size in OV than those in IP. Sweep amplitude diminished with increased task difficulty. It concluded that eye movement indices could objectively assess the changes of attention allocation and workload. Pilots mainly access information from the out view; their attention allocated mainly to the out view.