Design of fiber PM2.5 and PM10 concentration detectors based on MIE scattering

Yun Li; Jianfeng Tang

doi:10.1117/12.2549850

12 March 2020 Design of fiber PM2.5 and PM10 concentration detectors based on MIE scattering

Yun Li, Jianfeng Tang

Proceedings Volume 11437, 2019 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications; 114370M (2020) https://doi.org/10.1117/12.2549850
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

PM2.5 and PM10 are important indexes reflecting air quality. Based on the MIE angular scattering principle, a PM2.5 and PM10 detector arraywasdesigned,which was miniaturized and all fiber structures. Theoretical deduction and Matlab program simulation were given to illustrate the basic principle of the system. The influence of system parameters on measurement accuracywere discussed, such aslaser wavelength, scattering angle and receiving range parameters. Using optical fiber spherical end face instead of discrete lens group, miniaturization of probe structure was realized. The introduction of frequency modulated continuous wave (FMCW) technology, realization of multi-element frequency division multiplexing. At the same time, the influence of stray light is eliminated and the signal to noise ratio is improved effectively. The system can simultaneously measure the concentration of PM2.5 and PM10 at multiple locations.

Citation Download Citation

Yun Li and Jianfeng Tang "Design of fiber PM2.5 and PM10 concentration detectors based on MIE scattering", Proc. SPIE 11437, 2019 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications, 114370M (12 March 2020); https://doi.org/10.1117/12.2549850

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