基于疲劳模式识别的VDT作业工间休息机制

为保障作业人员身心健康和作业效率,运用E-Prime软件模拟认知性VDT持续作业,通过方差分析提出作业疲劳综合评价指标体系,并使用客观绩效指标和生理指标作为输入变量,主观疲劳综合指数作为输出变量,训练BP神经网络,对作业疲劳进行模式识别;提出认知性VDT持续作业工间休息机制.结果表明:通过正确反应时间、注视时间、瞳孔直...

Break mechanism of VDT continuous operation based on fatigue pattern recognition

In order to ensure the physical and mental health and work efficiency of the employees of the cognitive visual display terminal(VDT),the break mechanism was studied.The E-Prime software was used to design the experiments to simulate the cognitive VDT continuous operation,and a comprehensive evaluation index system was proposed for the work fatigue through the analysis of variance.The objective performance indexes and physiological indexes were taken as the input variables,and the subjective fatigue comprehensive index was taken as the output variable.Then the BP neural network was trained,and the pattern recognition on work fatigue was conducted.The break mechanism of cognitive VDT continuous operation was proposed based on the pattern recognition results.The results showed that the results of pattern recognition on the work fatigue of VDT continuous operation were reliable through four indexes of correct reaction time,fixation time,pupil diameter and blink frequency,and the proposed break mechanism was objective and effective.