Experimental Research On The Difference Of Electric Workers’ Risk Perception Ability Influenced By Multiple Factors

Risk perception is the premise of preventing accidents,and the occurrence of unsafe behaviors of operators is often caused by insufficient risk perception ability.Electricity work belongs to the category of special operations and has great danger.In2020,there will be 35 accidents in the power industry,and 44 people will be killed,which requires electricians to have high risk perception ability.Due to the influence of a variety of personal and external factors,electrical workers have differences in their risk perception capabilities.This difference makes some risks unable to be effectively identified,resulting in accidents.From the perspective of differences,this paper designs a risk perception test experiment to study the following aspects:Differences in risk perception ability of electrical workers with different experience levels in different scenarios.A mixed design experiment of A_（1~3）×S_（1~3）.The results show that experts have higher accuracy and less missed detection rate in the process of risk perception,less attention to risk information,and more concise and efficient risk search mode.For complex risks,experts show a greater advantage.At the same time,the research shows that,except for the risk search time,there is no significant difference in the correct rate and missed detection rate of risk perception results between experienced and inexperienced subjects,that is,work experience does not necessarily lead to differences in risk perception ability.Differences in risk perception ability of electrical workers with different experience levels in quiet and noisy environments.Noise interference factors are introduced on the basis of empirical factors influencing the experiment,which is a mixed design experiment of E_（1~2）×B_（1~3）.It was found that experts’risk perception ability is not affected by noise in the environment,while experienced and inexperienced employees are more easily affected,resulting in a decrease in the accuracy of risk identification,an increase in the missed detection rate,and the risk perception process.Spend more time than in a quiet environment.The heart rate and electrical skin index of the subjects in the noisy environment were significantly higher than those in the quiet environment,that is,the noise may cause the subjects to be more anxious and nervous.The influence of risk location on the risk perception ability of electrical workers is different.Aiming at the undiscovered problem of some risks in the above two experiments,two risk images with different arrangement positions were designed to test the risk perception ability,and the risk perception situation of electricians during the experiment was recorded.The results of the study showed that electrical workers’perception of risk also changed after the risk location was changed,and that the risk at the center of the visual field had less first fixation time and more percentage of fixation time relative to the risk at the edge of the visual field.The search is usually based on"whole-focus",and the focus transitions from the center of the visual field to the peripheral area,that is,the electrician’s ability to perceive the risks of hidden locations is weak,and the change of the risk location has no significant impact on the visual search mode.