基于光谱吸收式光纤H_2S气体传感器的研究  

Optical Fiber Hydrogen Sulfide Gas Sensor Based on Spectrum Absorption

作　　者：张晓东[1] 李俊[1] 

机构地区：[1]西南石油大学机电工程学院,四川成都610500

出　　处：《仪表技术与传感器》2009年第6期14-15,53,共3页Instrument Technique and Sensor

基　　金：石油天然气装备教育部重点实验室项目(2006STS04)

摘　　要：基于H2S的光谱吸收特性,设计了一种检测H2S浓度的光纤传感系统,利用双波长单光路的差分检测方法,选用发光二极管(LED)作为系统光源,设计了滤波片盘,通过步进电机驱动实现了差分吸收检测。同时,分析了气室和耦合,设计了数据处理系统对检测系统做出实时控制。Hydrogen sulfide is a poisonous gas harmful to people, a fast and real-time measuring hydrogen sulfide is very important for people＇ s health. Based on the principles of Hydrogen sulfide molecules absorption spectra, an optical fiber gas sensor was designed. Double-wavelength-single-path differential absorption detecting method was adopted, a kind of light-emitting diode （LED） was chosen to use in the system design, and a structure of filter disk was designed, which was driven by stepping motor, to achieve differential absorption detection. It analyzed the gas cell and coupling, and designed a real-time control system for dealing with data.

关 键 词：硫化氢 实时 光谱吸收 差分检测 气室 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]