1种基于背景能量曲线的近红外光谱仪器响应函数监控及校准方法

A new method to monitor and calibrate NIR instrument response function based on background energy curves

针对近红外光谱分析中普遍存在的模型传递(仪器稳定性)问题,通过建立样品的信号漂移量和背景能量的信号漂移量之间的函数关系,实现了1种对仪器响应函数(状态)进行监控和校准的方法。采用两种不同的处理方式,采用手动调节分析仪器光源能量的方式,对基于阿达玛变换的近红外光谱仪的响应函数进行了模拟监控分析,对比分析了30个汽油样品的研究法辛烷值在校准前后的分析结果,计算结果证明了监控及校准方法的可行性和有效性。

The calibration model transfer is always the hot topic as for near infrared spectroscopy（NIR） analysis.Through the establishment of signal drift functions between samples and backgrounds,a new method to monitor and calibrate instrument response function has been put forward.In this article,two different approaches have been put forward.By means of manual tuning of the lamp-house energy,a kind of NIR instrument based on Hadamard transform has been calibrated.The results prove the feasibility and effectiveness of the new monitoring and calibration method.