摘要
对非分散红外SO_2气体检测技术及其运行机理作了系统介绍。分析了非分散红外SO_2气体检测的吸光度获取方案及浓度反演方法。以三阶多项式为拟合模型,采用非线性最小二乘法获得了系统的定标曲线。对系统的测量准确度进行了相关分析,得出测量误差<2%。结果表明,利用非分散红外光谱吸收法能够实现对SO_2气体的准确测量,可为其它气体的测量提供相似的解决方案。
The non-dispersive infrared gas analysis technique and its application in sulfur dioxide measurement are presented. The absorbance acquisition and concentration retrieval in non-dispersion sulfur dioxide analysis are analyzed. By taking the third-order polynomial as a fitting model, the calibration curve is obtained with the nonlinear least-square. The measurement accuracy of the system is analyzed and the measurement error less than 2 % is derived. The result shows that the non-dispersive infrared technique can measure the sulfur dioxide accurately and it can also be used in the analysis of other gases.
出处
《红外》
CAS
2011年第12期10-13,共4页
Infrared
基金
国家高新技术研究863重大课题项目(2009AA063006)
国家自然科学基金项目(40805015)
安徽省优秀青年科技基金项目(10040606Y28)
关键词
红外技术
非分散红外
气体检测
二氧化硫
infrared technique
non-dispersive infrared
gas detection
sulfur dioxide
