指控舱显控界面字符显示对认知负荷的影响

摘要

为研究指控舱显控界面中字符显示方式对人的认知负荷影响性问题，提出一种面向脑力认知负荷的综合评价方法。以舱内显控界面中的二号字体为研究对象，根据正交实验法设计三因素（字符显示密度、显示类型、颜色匹配）三水平的脑电生理实验；以θ波功率和近似熵作为认知负荷评定指标，采用因子方差法定量分析字符显示各因素及其交互作用对认知负荷的影响；结合认知负荷理论对各显示因素的影响机理进行分析。分析结果表明，显示密度、颜色匹配以及显示密度与其它两因素之间的交互作用对认知负荷产生显著影响，其中显示密度的影响高度显著。研究结果可为指控舱显控界面的优化设计与评价提供依据。%A comprehensive evaluation method based on mental cognitive load (CL)was proposed to investigate the influence of different display showed on command and control cabin display interface on the CL of commanders.Taking the font 2 as the re-search object,a three-factor and three-level EEG physiological experiments were designed based on orthogonality.Taking the power of theta wave value (Pθ)and the approximate entropy (ApEn)as the CL index,the three factors and their interaction be-tween each other were analyzed.Each factors’impact mechanism was analyzed combined with CL theory.The results indicate that the display density,color matching and interactions of display density with the other two factors have significant influence on CL,and the influence of display density is more significant.The results provide basis for characters optimal design and assess-ment of the command and control cabin display interface.