A Development Of A Type Of Smoke Detection And Analysis System Based On Full Spectrum

Environmental pollution has attracted worldwide attention in recent years.Air pollution is especially prominent in various environmental pollution.With the rapid development of modern social industry,the kinds and contents of various kinds of polluting gases in the atmosphere are increasing day by day.In order to effectively prevent and control all kinds of air pollution sources,how to accurately measure the content of various air pollutants has become an urgent problem.Based on the absorption characteristics of sulphides and nitrides in the ultraviolet band of the atmosphere and the corresponding calculation methods,the on-line continuous monitoring system for atmospheric quality is designed to detect and measure the concentration of various kinds of polluted gases in order to better understand and monitor the industrial process and environment.Change.In this thesis,non dispersive infrared gas detection,spectrophotometry,tunable diode laser spectroscopy,photoacoustic spectroscopy and other gas detection techniques are introduced.This thesis introduces the basic knowledge and the development trend of various technologies.According to the relevant data,we also compare the different technical performance and draw some conclusions from it.The gas analyzer based on ultraviolet differential absorption spectroscopy is also discussed in detail.In this thesis,various monitoring methods of different principles are compared,and a scheme for measuring the gas composition and its concentration based on the difference absorption spectrum analysis method is put forward in combination with the actual situation,and the overall design scheme of the system is given.The basic principle of the system is introduced,and the modules of each system are introduced in detail,and the whole system is tested to verify the requirements of the design specification.The system optimizes the performance of the hardware design,realizes high speed accurate data acquisition,optimizes the Lambert-Beer law on the algorithm,eliminates the influence of Rayleigh scattering and Mie scattering,and the result is more accurate,and realizes the purpose of accurate,rapid and real-time monitoring of the composition and concentration of the gas body.