光学仪器, 2016, 38 (3): 262, 网络出版: 2016-07-26
基于差分吸收光谱法的大气质量在线连续监测系统
An air quality on-line continuous-monitoring system based on differential optical absorption spectroscopy
差分吸收光谱技术 连续监测 环境监测 气体浓度 differential optical absorption spectroscopy continuous monitoring environmental monitoring gas concentration
摘要
为精确测量气体组分及其浓度,根据大气中硫化物和氮化物在紫外波段对光谱分子的吸收特性及基于差分吸收光谱技术及相应的计算方法,设计了大气质量在线连续监测系统。该系统对硬件做了性能提升,实现了高速精确采集;在算法上对Lambert-Beer定律进行了优化,消除了Rayleigh散射和Mie散射的影响,使测量结果更加精准,达到了精确、快速、实时地监测气体组分及其浓度的目的。
Abstract
To accurately measure the gas composition and concentration,we designed an air quality on-line continuous-monitoring system based on the differential absorption spectroscopy and the corresponding calculation method,because the spectral absorption characteristics of molecules in the ultraviolet of sulfides and nitrides in the atmosphere are specific.The system is designed to upgrade the performance of the hardware,achieving high precision.Algorithm Lambert-Beer′s law has been optimized.The effects of Rayleigh scattering and Mie scattering are eliminated,realize accurately,rapidly,real-time monitoring of gas composition and concentration.
郁敏, 南学芳, 李楠, 杨杰, 张宇, 高秀敏. 基于差分吸收光谱法的大气质量在线连续监测系统[J]. 光学仪器, 2016, 38(3): 262. YU Min, NAN Xuefang, LI Nan, YANG Jie, ZHANG Yu, GAO Xiumin. An air quality on-line continuous-monitoring system based on differential optical absorption spectroscopy[J]. Optical Instruments, 2016, 38(3): 262.
PDF全文
