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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。
Aiming at the problem of model transfer (instrument stability) which is ubiquitous in near infrared spectroscopy, a method of performing a response function (state) to the instrument is established by establishing a function relationship between a signal drift amount of a sample and a signal drift amount of background energy Methods of monitoring and calibration. Two different processing methods were adopted to adjust the response function of the Near Infrared Spectrometer based on Hadamard transform manually by adjusting the energy of the light source of the analytical instrument. The comparative analysis of the octane number of 30 gasoline samples The results of the analysis before and after calibration prove the feasibility and effectiveness of the monitoring and calibration methods.