基于太赫兹时域谱烟支湿度密度检测的实验研究  

Experimental Research on Cigarette Humidity and Density Detection Based on Terahertz Time-Domain Spectroscopy

作　　者：周永军[1] 张辉[1] 张宣妮[1] 王西明[1] 

机构地区：[1]咸阳师范学院物理与电子工程学院,陕西咸阳712000

出　　处：《激光与光电子学进展》2016年第1期228-233,共6页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61307002);陕西省科技研究发展计划(2014JQ8316);陕西省教育厅自然科学基金(09JK806);咸阳师范学院科研基金(14XSYK009);咸阳师范学院教改项目(201402010)

摘　　要：卷烟湿度及密度是衡量烟支品质的重要物理指标,适当的湿度和密度不仅可以提高烟支质量,而且可以降低残品率。以检测烟支湿度及密度为目的,利用时域谱(TDS)实验系统采集密度相同但湿度不同的3组烟支样品(每组11个样品)及湿度相同但密度不同的2组烟支样品(每组14个样品)的太赫兹时域波谱,建立了基于峰值衰减量ln E的湿度计算模型和烟支密度与太赫兹时域谱峰值的数学表达式。结果表明,利用湿度模型计算的结果与传统烘干称重法比较,在湿度20%以下两者的绝对误差小于2.5%;烟支密度与太赫兹时域谱峰值相关且相关系数约为0.9639。说明基于太赫兹时域谱的烟支湿度密度检测不但可行而且具有较高精度。Humidity and density are important physical indicators to evaluate the quality of cigarettes. Proper humidity and density can improve the quality of the cigarettes and reduce the defective rate. To detect cigarette humidity and density, the terahertz time-domain spectra （TDS） of 3 cigarette sample groups （each group contains 11 samples） with identical density and different humidity and 2 cigarette sample groups （each group contains 14 samples） with identical humidity and different density, are collected using the time-domain spectroscopy system. The humidity calculation model which is based on the peak attenuation ln E and the mathematical expression between cigarette density and the spectral peak in terahertz time- domain are established. Compared with the traditional method of drying and weighing, the results obtained by the humidity calculation model show that the absolute error is less than 2.5% when the humidity is lower than 20%. The cigarette density and the spectral peak in terahertz time-domain are relevant. The correlation coefficient can reach 0.9639. The detection of cigarette humidity and density based on the terahertz time-domain spectroscopy is not only feasible but also with high accuracy.

关 键 词：光谱学 太赫兹 时域谱 烟支湿度密度 检测 

分 类 号：TN247[电子电信—物理电子学]