光纤传感器在纸币凹版印刷特征识别中的应用L∫L.PDFVIP

32 2 Vol.32　No.2 　2006 3 CHINA MEAS REMENT TECHNOLOGY Mar, 2006 　　　　　 1 2 1 1 1 1 蒋雁飞 , 雷玉堂, 叶玉堂, 王华明, 唐　浩, 刘学智 (1., 610054;2., 528421) 　:。 , , 。 , , 。 , , 。 :;;;; :TP212.14　　　　:A　　　　:1672-4984(2006)02-0082-04 Application of optical-fiber-sensor to recognizing the characters of intaglio printings on banknotes JIANG Yan-fei, LEI Yu-tang, YE Yu-tang, WANG Hua-ming, TANG Hao, LI Xue-zhi (1.School of Opto-electronic Information, niversity of Electronic Science and Technology, Chengdu 610054, China; 2.Baijia-Baiter Group Company of Zhongshan City, Zhongshan 528421, China) Abstract:Two methods have been proposed to test the intaglio printings on banknotes by optical fiber sensors.The dynamic test is based on the theory of measurement of tiny displacement by optical fiber sensors, while the electromagnetic scattering theory is used in static test using fiber surface roughness sensor.According to the actual requirements, we designed a detector of each method respectively to make the characters of tested surface clearer.Both theoretical and experimental result show that the two methods proposed in this paper arefeasible, and the dynamic method has been used on a new professional financial anti-forgery workstation.This project will certainly make up the vacancy of machine identification of the characters of intaglio printing system in thefinancial security field. Key words:Intaglio printing;Optical fiber sensor;Tiny displacement;Surface roughness;Anti-forgery 1　　 , , , , 。 , , , 。 。 , ,