NEAR-INFRARED PHYSICAL PARAMETER MEASURING METHOD HAVING MEASURING-POINT-FREE TEMPERATURE COMPENSATION FUNCTION

摘要

A near-infrared physical parameter measuring method having a measuring-point-free temperature compensation function, comprising: collecting representative samples, collecting near-infrared spectra of all the samples at different temperatures, and recording experimental conditions such as temperature; then preprocessing the collected spectra, establishing a near-infrared prediction model for sample temperatures, and establishing near-infrared physical parameter prediction models for low-temperature points and high-temperature points respectively; and finally performing correction calculation on different temperatures from the low-temperature points or the high-temperature points and constructing a physical parameter correction model applicable to any temperature. The method uses temperature as an explicit factor variable in construction of a temperature correction model, so physical measurement at different temperatures can be completed in virtue of response of the spectra to temperatures during near-infrared measurement; thus, direct temperature measurement information and related calculation are not required.