基于差分拉曼光谱的烟盒外包装薄膜检验研究

Inspection of cigarette packaging film based on differential Raman spectroscopy

为建立一种区分检验烟盒外包装薄膜的方法,采用最新的差分拉曼光谱技术对41个不同品牌、不同系列的烟盒外包装薄膜进行检验研究,利用差分技术和BP神经网络技术、差分拉曼解调和去噪算法预处理谱图。通过结合传统解析谱图和化学计量学方法,可实现区分不同品牌、不同系列的烟用外包装薄膜样本的目的。研究表明:该方法操作简便、无损检材且科学可靠,能为公安机关实际办案提供帮助。

In order to establish a method for distinguishing and testing the packaging film of cigarette packs,the latest differential Raman spectroscopy technology was used to test 41 packaging films of cigarette packs of different brands and series,the spectrum were pretreated by using differential technology,BP neural network technology,differential Raman demodulation and denoising algorithms.By combining traditional analytical spectrum and chemometrics methods,the purpose of distinguishing different brands and different series of cigarette packaging film samples was fulfilled.Studies have shown that this method is simple,non-destructive,and scientifically reliable,which can help public security organs in handling cases.