机车乘务员视觉可靠性评价

列车提速中 ,对乘务员视觉系统动态感知能力的要求是不可忽视的。对 1 58名乘务员的动态视觉感知能力进行测试。结果表明 :静视力相同者 ,动视力差异较大 ,静视力不能全面反映乘务员动态视觉感知能力。动视力、静视力均是乘务员行车安全不可忽视的重要指标。并提出了乘务员动态视觉能力的安全阈值大于 0 .5。并研制出测试评价系统。

Reliability Evaluation of Sight for Trainman

As train raises its speed, the requirement of dynamic vision apperceptive ability for trainman cannot be ignored. The dynamic sights of 158 subjects were measured. Results show that there exist considerable differences in dynamic sights among the trainmen who have similar static sights, that the static sight cannot completely reflect the dynamic vision apperceptive ability, and that both the dynamic and static visions are important indexes for trainmen that cannot be neglected. It is further proposed that the safety threshold value of dynamic vision apperceptive ability is greater than 0.5. At the same time, a system for evaluation and measurement of dynamic apperceptive ability is worked out.