矿灯照度对人生理心理及视觉表现的影响

Influence of mining lamp illumination on human physiology psychology and visual performance

为了研究井下移动光源对人生理、心理及视觉表现的影响,利用MP150多道生理仪、闪光融合频率计和主观问卷,分析作业前后3种矿灯照度对心率、高频、低频及视觉表现的影响。结果表明:作业前后高照度和中照度对心率、高照度对低频、低照度对高频均有显著影响;作业前心率的平均值随矿灯照度增加而上升(73.74_(低)<74.85_(中)<76.48_(高)),作业后高照度下心率一直保持较高水平;作业前光融合频率临界值的平均值随照度升高而增大(32.13_(低)<32.95_(中)<35.13_(高)),作业后高照度下光融合频率临界值下降且光照环境不舒适度和注意力集中困难程度增加。这表明矿灯不同照度对人的神经活动影响不同,高照度虽能提高神经活动兴奋性和短时视觉水平,但长时间处于该环境中会加快身心疲劳,导致事故发生。

This paper is to trace and discover the effects of illumination of different cap lamps on relieving and recovery of the job performance by doing a questionnaire survey by the visual analogue scale(VAS).APTECH BD-Ⅱ-118 flash fusion frequency meter is used for CFF(Critical Flicker Frequency)and tracing the electrocardiogram signals that can be recorded with a multi-purpose physiological instrument,known as Type MP150 and Acqknownledge 4.2.In that case,we can export HR(Heart Rate),HF(High Frequency),and LF(Low Frequency).And we tested twenty subjects who are as fresh as paint and have worked in the underground coal mine.The above-mentioned three kinds of cap lamp illumination can be applied to the subjects as the visual stimuli,which were made from the weak illumination(2000 lx),medium illumination(4000 lx),and strong illumination(6000 lx).To gain the results from the contrastive comparison we had Paired t-tests for every two illuminance results by IBM SPSS Statistics 26.0,and Origin 2018 was used to draw the dot plots.We obtain conclusions from the analysis of the results of our investigation from VAS,CFF,HR,and the trace pursuing analyses on the frequency index of heart beating rhythm(HRV):(1)Before and after task,high and medium illuminance have a significant influence on HR,high illuminance has a significant influence on LF,and low illuminance has a significant influence on HF;(2)The mean value of HR increases with the increase of illumination intensity of mine lamps(74.37 weak<74.85 medium<76.48 strong)before task;And HR keeps a high level under high illumination after task;(3)The mean value of CFF increases with the increase of illuminance(32.13 weak<32.95 medium<35.13 strong)before task,CFF decreases under high illumination after task,and the illumination environment is uncomfortable and concentration difficulty increases.Therefore,mining lamp illumination has different effects on neural activity.Although high illumination can improve the excitability of neural activity and short-term vision level,exposure to this environment for a long time will accelerate the degree of physical and mental fatigue,leading to accidents.This study verifies the consistency of the influence of mobile lighting and fixes lighting source on the physiology and psychology of operators,provides a basis for the research on the influence of mobile light source on the physiology and psychology of operators,and promotes the research on the influence of mining lamp lighting on human factors.