基于交互式SHS技术的气体识别与浓度检测系统

his paper is on the basis of study of the wide spectrum of SHS technology and for a wide spectrum of SHS system interference fringe lining low contrast, alternative wide spectrum of SHS system is proposed in this paper. And then the system is applied in the unknown gas species identification and monitoring the concentration of. Theory and simulation results show that the alternative SHS spectrometer, echelle grating critical diffraction efficiency , interference pattern of critical lining than degree; and the application of the system in the unknown gas species identification and concentration detection, the unknown gas detection accuracy can be achieved , the light spectrum detection range can traverse in the near UV to far infrared band (200~57000nm), treat the measured gas concentration detection accuracy of less than 1 ppm. So the system has important research value and application value.