Method and system for screening infrared bands of sulfur hexafluoride gas and decomposer thereof

The invention discloses a method for screening infrared bands of sulfur hexafluoride gas and decomposer thereof, which comprises the following steps: step 1, collecting infrared band data of SF6 gas and decomposer thereof, and randomly generating an infrared band initial population; step 2, selecting a fitness function to carry out fitness calculation on the infrared band individuals in the initial population to obtain a corresponding feature matrix; step 3, carrying out evolutionary computation on the feature matrixes, setting threshold termination conditions of evolutionary computation, judging whether the corresponding infrared bands meet the termination conditions or not, and if yes, outputting the corresponding infrared bands; step 4, carrying out genetic manipulation and particle swarm evolution operation respectively on the infrared bands which do not meet the termination conditions, and generating a filial generation population A and a filial generation population B; step 5, fusing A and B, and recomb