研究密闭舱室中不同色温对视觉疲劳恢复的影响，以提高作业人员的舒适性和工作效率。在搭建的密闭舱室内设置2 500 K、4 000 K、6 000 K三种色温的发光二极管(Light Emitting Diode，LED)灯光环境，采用卡罗林斯卡嗜睡量表(Karolinska Sleepiness Scale，KSS)和闪光融合临界频率(Critical Fusion Frequency，CFF)结合的方式，对 25 名被试人员在不同灯光环境下的疲劳程度和恢复程度进行主客观测量，并对数据进行分析。在6 000 K LED灯光环境中休息后，KSS得分变化最大，表明高色温环境下主观疲劳恢复效果最佳;在2 500 K LED灯光环境中休息后，KSS得分变化最小。在2 500 K LED灯光环境下，CFF变化最大，表明低色温环境下客观疲劳恢复速度最快;而在4 000 K LED灯光环境中，CFF变化最小，客观疲劳恢复速度最慢。根据不同的任务环境和作业需求，可以灵活选择适宜的LED灯光色温。在低色温灯光环境下休息，有助于缓解和消除视觉疲劳;在高色温灯光环境下工作，有利于提高作业人员的警觉度和精神状态。未来的光环境设计应考虑这些发现，以优化密闭舱室作业人员的工作效率和健康。
Investigation of the impact of light environments on visual fatigue and recovery during VDT operations in enclosed cabins
This study examines the effects of various color temperatures on visual fatigue recovery in enclosed cabin environments,with the goal of enhancing personnel comfort and work efficiency.A simulated cabin environment was equipped with Light Emitting Diode(LED)lighting set to three different color temperatures:2 500 K,4 000 K,and 6 000 K.Twenty-five participants,comprising undergraduate and graduate students aged 18 to 25 with normal or corrected vision,were exposed to these lighting conditions.Each participant completed a series of fatigue-inducing tasks,including visual search activities,N-back memory tests,and text input exercises,all designed to replicate typical operations conducted in confined spaces such as submarines or space stations.Following these tasks,participants rested for 20 minutes under the same lighting conditions,during which the use of electronic devices was prohibited to ensure optimal visual recovery.Fatigue levels were assessed before and after the rest periods using both the Karolinska Sleepiness Scale(KSS)for subjective evaluation and Critical Flicker Fusion(CFF)frequency for objective measurement.Data analysis revealed that the highest color temperature of 6 000 K resulted in the most significant improvement in KSS scores following the rest period,indicating that higher color temperatures are particularly effective for subjective fatigue recovery.In contrast,the lowest color temperature of 2 500 K produced the smallest change in KSS scores,indicating less effective subjective recovery.However,the most significant change in CFF was observed under the 2 500 K condition,suggesting that lower color temperatures facilitate the quickest objective recovery from visual fatigue.The 4 000 K condition exhibited the least change in CFF,indicating the slowest rate of objective recovery.These findings suggest that the choice of LED lighting color temperature should be adapted to meet specific task environments and operational requirements.Low color temperature lighting is recommended for rest periods to help alleviate visual fatigue,while high color temperature lighting is more appropriate for work environments that demand heightened alertness and mental focus.Future lighting designs for enclosed cabins should integrate these findings to enhance work efficiency and promote occupant well-being.
万方数据
维普
