DOAS air quality monitoring system

摘要

This article mainly focused on DOAS technology in air quality monitoring system. We designed a new air quality monitoring system using DOAS theory. By deeply studied all the foreign DOAS products and analyzed DOAS theory, we develop a brand-new DOAS system which has independence technical characters. Our DOAS system exceeds today's DOAS products by these three merits:1.New Light Emission-Receiver Unit which united emission, receiver and collimation lenses. These three are totally sealed up accurately in one lens box, made of non-thermo-sensitivity material.2.New Background Elimination Fiber. It can detect background signal at any time, and feedback to the database to renew the background data. This warrants the same measure condition between background signal and detection signal.3.Dynamic-feedback self-adapting program. It may dynamic-feedback background spectrum, dynamic-feedback meteorological parameters and dynamic-feedback summary and prediction. In our experiment by this design idea, we get accurate data.