Influence of Font Size of EMU Display and Control Interface on Driver's Recognition Efficiency
Zizheng Guo · Zhongguo tiedao kexue · 2013
According to the number of strokes,which are 6,9,12 and 15,four groups of Chinese characters were selected from EMU display and control interface of train running monitor record device(LKJ) and automatic train protection system(ATP).The selected Chinese characters were most frequently used and left-right structure.Taking correct reaction time as recognition efficiency index,an experiment was conducted to test the influence of the structural complexity and font size on driver's recognition efficiency.Firstly,ANOVA method was used to analyze the differences in driver's reaction time for recognizing four groups of common Chinese characters with different structural complexity.Secondly,logarithmic function was adopted to carry out regression analysis on test data,and the quantitative relationship between the font size and the recognition efficiency was set up.Finally,with satisfying normal reading speed and reaction operation time as restrictive condition,the minimum thresholds corresponding to the font size for four groups of common Chinese characters were obtained,which were 26,28,22and 20mm 2 respectively.