Design and effect study of stepped reflective cup for miner’s lamp

Abstract

A stepped reflective cup is designed to improve the industry situation that it is difficult to have both lighting angle and lighting uniformity of miner’s lamp. The luminous characteristics of LED light source and the lighting requirements of underground working conditions of coal mine are considered in the design. The simulation is carried out with TracePro. The simulation results show that after the secondary light distribution through the reflective cup, the light source energy is redistributed, and the far central range, wide illumination range and the uniformity of main illumination areas can be obtained at the same time. The idea of applying image recognition technology to analyze lighting uniformity is proposed for the first time, and the designed reflective cup is verified by compiling relevant programs in MATLAB. The results show that the lighting uniformity of miner’s lamp using stepped reflective cup can reach 82.17%, which is about 10 percentage points higher than that of common deep light cup and shallow light cup.

Keywords

• led miner’s lamp
• reflective cup
• illumination uniformity
• digital image processing
• tracepro