红外甲烷传感器的实时温度校正模型的建立

The Mathematical Modeling of Infrared Methane Detector with Real-Time Rectification of Temperature Influence

红外光谱法是检测气体浓度的有效手段。文章就红外甲烷传感器数学建模中如何考虑环境温度的影响,进行了深入分析,提出了基于最小二乘方法的实时温度校正模型,并给出了建模实验的结果。研究表明,通过温度校正系数的最小二乘拟合,可以根据计算得到的温度校正系数,对温度变化引起的红外甲烷传感器测量误差进行实时校正。

IR spectrum analysis is an effective original approach in the measurement of concentration of gases. This article focuses on the solution of the mathematical model of infrared methane detector with the temperature influence taken into consideration. Through deep analysis, a real-time rectification model is advanced based on the LMS algorithm. The result of the modeling experiment is also given. This shows the coefficient of rectification in respect of temperature deviation can be computed, through the LMS algorithm applied in the polynomial fitting. Therefore the error of the detector in respect of temperature deviation can be rectified in real-time.