Abstract

Info

Author(s):: CONG Xiao-yan; WANG Zeng-cai; XU Jun-kai; ZHANG Wan-zhi; LI Yun-xia; School of Mechanical Engineering, Shandong University, Jinan 250061, Shandong, China

Keywords:: automotive engineering; fatigue assessment; pupillometry; illumination

Abstract:: 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 2 hours and the other was control group who did ex-work inspection for 2 hours 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 doesnt 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 in data collecting.