Design of target code in human-machine interface
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摘要: 研究虚拟战斗机驾驶员飞行过程中涉及的监视、计算记忆、攻击和探测4项任务,通过控制目标呈现时间和间隔时间改变工作的快慢节奏来影响脑力负荷,以正确反应率和反应时间来评价和分析被试在不同脑力负荷和任务权重下对目标颜色、形状及位置的辨认情况, 为人机界面中目标编码设计提供科学依据.实验结果表明:无论脑力负荷和任务权重如何,绿色、红色、正方形、圆形和三角形可作为人机界面设计中的目标编码,蓝色则不适合;人机界面设计时,必须对人的注意力分配问题进行评价,并作为确定目标位置的依据之一;对具有颜色、形状等多维目标的辨认,当目标的持续和间隔时间分别在1s以上时正确反应率都较高.Abstract: An experiment of multitask (monitor, calculation-memory, attack and detection) which simulated the flight control environment with some degree of fidelity was developed. This work investigated how human identify target color, figure and location under different task weight and mental workload levels which achieved by changing working speed rhythm controlled by stimuli display and interval time through measuring their reaction time and accuracy to provide standards for target in human-machine interface design. Results indicate that green, red, square, rotundity and triangle can be used as target code in human-machine interface design, but blue not, no matter what mental workload and task weight are. It is necessary to evaluate attention allocation and take it as the basis for deciding target location in human-machine interface design. There is good performance when a multidimensional target displays in the form of display interval time more than 1s.
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