基于汽车人机界面评测的中控触屏按键研究

目的 研究汽车中控触屏按键的尺寸及驾驶员交互特性,为设计提出指南及建议.方法 采用文献调研法建立汽车人机界面评测指标,基于驾驶仿真系统,通过实验收集安全性与用户体验维度的主客观数据,对不同尺寸的按键进行测试评估,探索驾驶员的交互操作特性.结果 按键尺寸大小与点击按键位置、视觉主观评分、工作负荷、可用性存在相关性;按键点击位置与按键中心的距离随按键尺寸增大而增大;点击按键位置倾向于左侧;主观评分、可用性与按键尺寸在一定范围内呈正相关,工作负荷表现则相反.结论 建议中控触屏按键尺寸为9～15 mm,经过公式换算可适应不同尺寸的车载屏幕.车载界面设计布局常用控件应多在左侧或扩大控件的操作热区.将汽车人机界面评测应用于车载中控触屏按键研究中可以为界面设计规范提供新的思路.

Touch Key of In-Vehicle Display and Control Screen Based on Vehicle HMI Evaluation

The work aims to study the size and driver interaction characteristics of the touch keys in in-vehicle display and control screen and to provide guidelines and suggestions for the design. The literature survey method was used to establish the vehicle HMI evaluation index. Based on the driving simulation system, the subjective and objective data of safety and user experience were collected through the experiment, the keys of different sizes were evaluated and the interactive operation characteristics of drivers were explored. There is a correlation between the size of the key and click position, visual subjective score, workload and availability of the key. The distance between the click position and the center of the key increases as the key size increases. The clicking position of the button tends to the left. The visual subjective score, usability and key size are positively correlated within a certain range, while the workload is opposite. It is suggested that the size of the touch keys should be from 9 mm to 15 mm, which can be adapted to different sizes of the car screen after formula conversion. The vehicle interface design layout of common controls should be more on the left or expand the control of the operation of the hot area. The vehicle HMI evaluation can be applied to the research on the touch keys in in-vehicle display and control screen, and it will provide new ideas for interface design specification.