驾车接近隧道过程中驾驶员瞳孔大小变化规律
Changing rule of drivers’ pupil size as driving into tunnels

为了解驾驶员驾车进入隧道过程中的瞳孔变化过程，让8位驾驶员分别驾车进入4座隧道，在此过程中用眼动仪记录驾驶员的瞳孔大小。分析眼动仪记录得到的驾驶员瞳孔大小数据的特征，通过小波变换进行数据处理,得到了驾驶员驾车进入隧道过程中瞳孔大小变化曲线。分析驾驶员瞳孔大小变化曲线发现，不同驾驶员的瞳孔大小存在个体差异；同一驾驶员多次测试的瞳孔大小存在一定的随机性；在接近隧道过程中驾驶员瞳孔逐渐变大，并在隧道洞口附近急剧变大；不同驾驶员的瞳孔变化趋势存在一定的差异；驾驶员瞳孔大小除受适应亮度的影响外，还受驾驶员的心理等因素的影响。
To reveal the changing process of drivers’ pupil size during driving were carried out into of tunnels, experiments eight drivers drived into four tunnels at different time. And their pupil size were recorded with eye tracker in the driving process. The recorded raw data by eye tracker was analyzed, wavelet transforms method was taken to process the data, and the pupil size changing curves of drivers when they drive into tunnels. From the curves analysis, it has been found that the individual difference exist on different drivers’ pupil size; There was a degree of randomness of pupil sizes amone repeated test of the same driver; the drivers’ pupil enlarged gradually when they driving into tunnels, and enlarged violently nearby tunnel’s threshold; the pupil size changing tendency of different driver exists some difference; drivers’ pupil size was influence not only by adaptation luminance, but also by their psychological factors.