瞳孔测量法应用于疲劳检测的适应性

Pupillary parameters as an objective tool for fatigue assessment

为了研究瞳孔测量法应用于实际疲劳检测的可行性,在疲劳检测试验中为瞳孔数据采集配置了恒定人造光环境,检测了露天作业挖掘机驾驶人的疲劳状态,探讨了瞳孔测量法应用于实际生产中的适宜条件。参试人员16人,平均分为2组,1组为试验组,1组为对照组。试验组执行挖掘机驾驶作业2h,对照组在同样工作场地进行挖掘机静态检修2h,对采集的数据进行傅里叶变换和统计分析。研究结果表明:试验组作业后瞳孔尺寸振荡幅度增大,瞳孔出现缩小,与作业前瞳孔尺寸差异显著(p<0.05);对照组作业后瞳孔振幅没有明显变化,瞳孔放大,与作业前差异不明显(p>0.05)。因此,自然光照环境中驾驶作业积累的疲劳,在数据采集时限定光照(670lx),瞳孔法能够予以有效检测。

In order to investigate the feasibility of pupillometry in practical fatigue detection,stable light conditions were established to test the fatigue degree of excavator drivers who worked outdoors and the suitable conditions for pupillometry in practical production were also discussed.16 excavator drivers were divided into two groups averagely：one was task group who drived excavator for 2hours and the other was control group who did ex-work inspection for 2hours at the same working site without starting excavator.Fourier transform and statistical analysis were applied to the collected data.The results show that after the prescribed task,amplitude in pupillogram of the task group increases and pupil diameter decrease,which indicates a significant difference in pupil size comparing with that before the task（Paired Samples Test,p〈0.05）;However,as for control group,there are no significant changes in amplitude and pupil diameter increases,which doesn＇t indicate a significant difference comparing with that before the task（p〉0.05）.Therefore,pupillometry can detect workers＇fatigue accumulated in natural light environment effectively under an ordinary artificial light environment（670lx）in data collecting.3tabs,7figs,18 refs.