Test and analysis of blue light hazard of LED explosion-proof lamps in coal mines

Abstract

At present, the application of LED light source in coal mine is more and more. However, due to the characteristics of closed, narrow and dark underground space and the social attention to occupational health and safety, the potential blue light hazard of LED light source has attracted more and more attention. In order to study the biological mechanism of the blue light hazard and the influencing factors of the degree of harm, this paper studies and analyzes the relevant standards of the blue light hazard assessment of the current domestic and foreign IEC, CIE and other authoritative organizations, and puts forward the requirements for the blue light exposure limit according to the calculation method of the blue light hazard. This paper also designs a test plan for the influence of three important factors, LED light source brightness, color temperature and lighting distance, on blue light hazard based on the actual application of LED light source in coal mines. The test results show that LED light source brightness, color temperature and lighting distance are positively related to blue light hazard. The greater the value, the greater the blue light hazard, and the blue light hazard is very easy to reach RG1 group. The research in this paper provides a basis for the preparation and revision of relevant product standards such as lamps, and has strong practical significance.