基于事件相关电位的触控交互界面设计方法

Design Method of Touch Interface Based on Event-Related Potential

针对触摸屏技术应用于民机驾驶舱带来的工效学设计问题,提出基于事件相关电位的触控交互界面设计方法。首先对人机界面视觉特征的属性进行分析,以形状和间距为例设计了六种触控交互界面。然后基于视觉搜索实验范式进行脑电实验设计,通过事件相关电位、反应时间、正确率以及主观评估结果探究视觉特征对操作人员表现的影响。最后基于模糊数学方法综合多种测量数据对人机工效进行了评价。实验发现,不同形状的触控组件之间的差异主要体现在P300上,不同间距的触控组件之间的差异主要体现在N1上。评价结果表明,触控组件在间距0~3.5 mm范围内,间距越大,受试对象的表现越好,使用该方法对民机驾驶舱触控界面人机工效进行评估具有可行性。

The design method of touch interface based on event-related potential is proposed to solve the ergonomic design problems caused by the application of touch screen in civil aircraft cockpit.The visual characteristics of hu-man-machine interface are analyzed.Six touch interfaces are designed from shape and spacing.The experiment is designed based on visual search experimental paradigm.The influence of visual features on performance is explored through event-related potential,response time,accuracy and subjective results.The ergonomics is evaluated based on the fuzzy mathematics method.The experiment finds out that the difference between touch components of different shapes is mainly reflected in P300,and the difference between different spacing is mainly reflected in N1.Under the condition that the touch components are in the range of spacing O~3.5 mm,the subjects performed better when the spac-ing is wider.It is feasible to use this method to evaluate the ergonomics of the touch control interface of civil aircraft cockpit.