Research on LED's Application in Aerospace Ecological Life Support System

Based on the special requirements of the space environment, the light source used in the cultivation of higher space plants must have high luminous efficiency, output light waves suitable for plant photosynthesis and morphogenesis, small size, light weight, long life, high safety and reliability records and no environment Pollution and other characteristics. Compared with other light sources such as cool white fluorescent lamps, high-pressure sodium lamps and metal halide lamps, LEDs are more effective in converting light energy into photosynthetically effective radiation; in addition, LED grow light has the characteristics of long life, small size, light weight and solid state. Therefore, in recent years, much attention has been paid to ground and space plant cultivation. Studies have shown that LED grow light can provide lighting with uniform spectral energy distribution, and the efficiency of converting electrical energy into light required by plants is more than 520 times that of metal halide lamps.