基于LED光源的积分浊度仪的系统设计

System Design for Integrating Nephelometer Based on LED Light Source

散射系数是气溶胶光学性质的重要参数之一。为了研究气溶胶光学性质,研制了一种用于测量散射系数的积分浊度仪。介绍了该仪器的工作原理、系统结构设计,对该仪器中最为重要的光学测量腔室和光源给出了最优的设计方案。该仪器与前向散射型能见度仪对比实验结果显示散射系数与能见度的相关系数为0.834,证明了本仪器的可靠性。本仪器光源稳定,整体系统结构简单,成本低廉,有广阔的应用前景。

Scattering coefficient is one of the most important parameters of the aerosol optical properties A kind of integrating nephelometer for measuring scattering coefficient is developed to investigate the aerosol optical properties. Principles and the system design of the system are presented, the optimal design of the optical chamber and the light source are proposed. Experimental results show that the correlation coefficient between scattering coefficient measured by the nephelometer and visibility measured by the forward-scattering visibility sensor was 0.834. It illustrates that the system is compact, low cost and reliable