光子学报, 2013, 42 (6): 747, 网络出版: 2013-06-14
近红外技术在纸张水分率测量中的应用
Application of Near Infrared Techniques in Paper Moisture Parameter Measurement
摘要
为了解决纸张水分率指标的在线测量问题, 研究了基于近红外光谱分析的水分率测量技术, 阐述了介质对光谱吸收的基本原理, 分析了该原理应用于纸张水分率测量时存在的问题, 探索了采用两条谱线(测量谱线和参考谱线)的方法实现水分率在线检测的关键技术, 设计规划并实验研究了相应的测量方案, 论述了方案中各功能模块的作用.基于光谱法和干燥称重法的水分率对比测量实验表明,基于光谱法的测量准确度可控制在0.5%以内.因此该方法可实现在线检测且满足准确度要求.
Abstract
In order to solve the online inspection problem of paper moisture rate technical specification, the moisture rate measuring technique based on the near infrared spectroscopic analysis is researched. The basic theory on the spectral absorption of medium is expatiated and the problems applying the theory to the moisture rate measurement are also analyzed. The key technique that can realize the moisture rate on-line inspection by means of two near infrared spectral lines (measuring spectral line and the reference line) is explored in detail. The measurement project is designed and the role of the main functional module in the project is discussed. The corresponding experimental research showed that, the precision of moisture rate measurement based on near infrared spectroscopic method is less than0.5%. It is higher than measuring precision of the dry method and the method can be applied to on-line inspection in paper-making process.
于殿泓, 李琳, 赵锴. 近红外技术在纸张水分率测量中的应用[J]. 光子学报, 2013, 42(6): 747. YU Dian-hong, LI Lin, ZHAO Kai. Application of Near Infrared Techniques in Paper Moisture Parameter Measurement[J]. ACTA PHOTONICA SINICA, 2013, 42(6): 747.