Research on Cognitive Load of Display Interaction of Construction Machinery on the Plateau Based on Eye Movement Physiological Measurement
Objective Explore the cognitive load of display interaction operations for construction machinery driv-ers in plain and plateau areas,and evaluate the different functional modules of the display interaction device of con-struction machinery based on cognitive load,and propose improvement suggestions.Methods A two-factor design experiment was conducted(2 regions×4 tasks)in plain and plateau areas.15 drivers at plain and12 drivers at plat-eau conducted real vehicle experiments on plain and plateau construction sites,respectively.The measurement indica-tors were average fixation duration,pupil diameter,pupil diameter change rate,and operation time.Results The anal-ysis of variance indicate that both the region and task have a significant impact on eye movement indicators and opera-tion time.The total operation time at plateau was 235.77±81.14s,and that at plain was 170.62±28.72s.The differ-ence in pupil diameter between plain and plateau was-0.198(P<0.05),and the difference in pupil diameter change rate was-0.010(P<0.05).Conclusion The plateau environment will increase the cognitive load of con-struction machinery drivers for display interaction operations.At the same time,the motor and battery modules of a loader's display screen resulted in high cognitive load,and this effect was more significant in the plateau environ-ment.Suggestions for improvement through simplification and abstraction design were proposed.
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