Design And Study Of Eye Movement Experiment On Hazard Perception

It is difficult to identify electrical risks,with high degree of injury and wide popularity of life.In 2020,there were only 35 accidents in the electric power industry in China,with 44 deaths.The lack of risk perception ability is very likely to cause electric shock,fire and explosion accidents,which seriously affect the public’s life,health,safety and economic development,putting forward higher requirements for the cultivation of the public’s risk perception ability.Electrical risk identification is professional and requires a certain knowledge base.The proportion of people with bachelor’s degree or above in the electricity related population continues to expand.Therefore,in this paper,the subjects in the safety engineering specialty of a university are divided into two groups,Group A and Group B,according to their education levels.Eye movement experiments related to risk perception are designed to explore the differences in risk perception ability between groups with different education levels.Firstly,the characteristics of current safety training methods and the requirements for electrical safety training are studied,and a new training method based on expert eye movement information,metacognition strategy and readability index is proposed.Combined with eye movement experiment,questionnaire survey and interview,a quantitative model of electrical risk perception ability is constructed,which combines subjective and objective aspects,to explore the impact of training intervention on risk perception ability.The results showed that the higher the education level,the better the risk perception ability of the group,and the lower the education level,the better the effectiveness of the training intervention.With the enhancement of basic risk perception,the training intervention effect of group B subjects gradually weakened,while group A showed the opposite trend.Secondly,on the basis of the current research,in order to simulate the real work scene,noise and illumination are added to simultaneously interfere with the contrast test.Through the regression model,explore the impact of eye movement indicators on risk perception.The results showed that by changing the search duration,fixation times,effective fixation time,average saccade speed and other eye movement indicators,the risk perception ability of the subjects would be enhanced or weakened to varying degrees.Under the interference of noise and illumination,when the risk search duration is extended to 1.6 times of the original search duration,the effect of risk perception is the best.At the same time,the effectiveness of color intervention on undetectable risks was explored.The results showed that blue color blocks should be used for risk warning in quiet environments,and green color blocks should be used for additional risk warning in interference environments.Finally,through the change of material form,it is confirmed that cartoon risk can form an effective mapping to photo risk,and the change trend of risk perception ability is consistent.The risk perception strategies of both groups adopt the identification method of "center to surrounding diffusion".However,in the first look selection,Group A gave priority to the risk with higher difficulty in the central area,while Group B chose the risk with the lowest difficulty in risk identification.In the face of complex environment,Group A can effectively identify the task area,which is less interfered by environmental factors in no task areas,and requires less effective gaze duration,so it can identify and handle multiple risks at the same time.Group B is greatly affected by environmental interference,and needs more effective attention to complete risk processing.