Research Of Visual Attention Ergonomics Based On Situational Awareness

With the development of information acquisition technologies and communication technologies,and the improvement of multimedia human-machine interaction technologies,human beings have begun to enter an era of information explosion.The development of human cognitive systems is more and more difficult to keep up with the speed of information growth.How to extract essential information from massive information,and thereby make effective decisions is crucial for people's daily life and various tasks.Attention is a process of resource focus that allows the cognitive system to focus on one part of the information while ignoring others.In the process of evolution,in order to adapt to the environment,humans have developed attention mechanism to selectively extract certain information from various types of information,so as to cope with these massive information beyond the processing capability of their own cognitive systems.The level of situation awareness is an important factor that affects humans' perceiving,understanding,predictions and decisions making.In this paper,the attention mechanism model and the situation awareness theory are analyzed and studied.Then,based on this,the ergonomics experiment research on the mission of the unmanned aerial vehicle operator and the visual attention in targets searching task is carried out,and the experiment results are combined.Then the relationship between visual attention and related factors in the task were analysed.Firstly we analyze the development trend of situational awareness,attention theory and their progress in recent years,then analyze the development of situation awareness model in recent years,classic models of situation awareness,and then analyze the attention theory in cognitive science,and sort out the theory and development of these classic models.Then,based on the unmanned aerial vehicle operator cognitive ergonomics experiment,the eye movement experiment of the attention of the UAV operator's situation awareness process is carried out,and the changes of the eye movement characteristics of the drone controllers in different types of tasks were analyzed.The space-based guidance effect in the attention mechanism is studied.Then,the attention-guided research experiment in the visual task was carried out,and the experiments were carried out under the condition of no additional task,the task without visual working memory load and the task with visual working memory load.With these experiments,we analyse the impact of significance,spatial location,visual working memory capacity,and visual working memory load on visual tasks.