1 Introduction
With the deepening of the openness of Chinese society and enhance awareness of human rights, mine safety and miner safety of life has become a common concern of the whole society.
According to the State Administration of Work Safety of the data: 2001 to 2004, our country has undergone a more than 10 people died in 188 large coal mine accidents, occurred on average every 7.4 days. In 2004, killing more than 30 people a total of 14 major accidents in particular, of which 6 from the mine, accounting for 42.8%. Mine disaster in 2004 official death toll is 6027 people. First half of 2005, the government spent 30 million yuan in special funds for coal transformation, Safety Supervision Bureau to the Administration of Work Safety, the situation is still grim, the number of deaths during the first half year increased 3.3% over the same period, reaching 2672 people.
2.1 Overview of traditional miner's lamp
Mid-18th century, the British industrial revolution greatly increased the demand for energy. The best British coal close to the ground exhausted. Shaft mining engineers must play in order to achieve mining area. Deep coal mining methane explosion caused serious problems, which are the causes of candles and oil lamps in unprotected flame. People tried a variety of alternative methods of underground lighting: including the use of rotten fish scales issued and flint just light mill (1740-1750), as well as with a mirror reflection from the ground. However, the explosion is still quite frequently, until the invention of the safety miner's lamp.
British chemist David (H ˙ Davy, 1778 ~ 1829) should be Hodgson (Hodgson) 1815 required the priest safe miner's lamp invented to solve the gas explosion caused by fire problem, the safety of the 19th century coal mining in Europe made a useful contribution.
2.2 LED miner's lamp profile
(1) In 2001, the first generation of miner's lamp with LED light source produced in China, the product uses lithium-ion batteries power the light source with more than just red, green, blue LED in parallel, multi-colored light through a special lens resulting from the human eye see the white light, illumination of up to 700Lx, basically reached the miner's lamp illumination standards, and product size, weight reduction than the traditional miner's lamp a lot, and have some maintenance functions. However, LED light source color mixing and volume, light effects and other issues limit its further development.
News Categories
