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首页> 外文期刊>Journal of near infrared spectroscopy >Working with a set of filter near infrared instruments
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Working with a set of filter near infrared instruments

机译：使用一组过滤器近红外仪器

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摘要

There is an increasing need for using a set of near infrared (NIR) instruments in industrial activities. In this study, three methodologies of working with a set of NIR instruments are reviewed: the standardisation of the predicted values, the standardisation of the absorbances and the modelling of the instrument differences. Modelling the NIR differences is performed by including in the calibration/validation sets spectra recorded in any of the different instruments of the set without any pre-treatment or after transfer by orthogonal projection (TOP) pre-transformation. In the latter case, TOP calculations from different sets of products are assayed. The methods are briefly presented and discussed through the results of a set of four InfraAlyzer 2000 instruments, 19-filter spectrometers which are used in the quality control of fresh alfalfa. Although the optimal procedure depends on the particular conditions of the industrial work (number of products, number of properties, number of instruments, etc.), all the above methods have been found to be suitable for operating with a set of NIR instruments. The present results also indicate an independence of the TOP results from the product used to compute the TOP factors, at least for the present set of NIR instruments which all belong to the same model and company.
机译：在工业活动中越来越需要使用一套近红外（NIR）仪器。在这项研究中，对使用一组NIR仪器的三种方法进行了回顾：预测值的标准化，吸光度的标准化和仪器差异的建模。对NIR差异进行建模的方法是，在校准/验证集中包含记录在该组任何不同仪器中的光谱，而无需进行任何预处理或在通过正交投影（TOP）预变换进行传输之后。在后一种情况下，将分析来自不同产品集的TOP计算。通过一组四个InfraAlyzer 2000仪器的结果简要介绍和讨论了这些方法，这些仪器是用于新鲜苜蓿质量控制的19过滤器光谱仪。尽管最佳程序取决于工业工作的特定条件（产品数量，特性数量，仪器数量等），但已发现上述所有方法都适用于一组NIR仪器。目前的结果还表明，至少对于目前都属于同一模型和公司的一组NIR仪器而言，TOP结果与用于计算TOP因子的产品之间是独立的。

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