作者：蒋雁飞1, 雷玉堂2, 叶玉堂1, 王华明1, 唐浩1, 刘学智1
作者单位：1. 电子科技大学光电信息学院, 四川 成都 610054;
2. 中山市百佳百特集团公司, 广东 中山 528421
关键词：凹版印刷; 光纤传感器; 微位移; 表面粗糙度; 防伪
摘要：
提出了两种用光纤传感器测试纸币凹版印刷的方案。其中动态检测方案利用了光纤位移传感器进行微位移测量的原理,静态检测方案利用了电磁波的散射原理,通过光纤表面粗糙度传感器来实现。按照实际要求,对两种方案的探测装置进行了设计,使其能更好地突出被测表面的特征。理论和实验结果都表明本文提出的两种方案是可行的,其中动态检测方案在一种新的专业级金融防伪设备中得到了应用,弥补了金融安全行业中机器识别凹版印刷特征的空白。
Application of optical-fiber-sensor to recognizing the characters of intaglio printings on banknotes
JIANG Yan-fei1, LEI Yu-tang2, YE Yu-tang1, WANG Hua-ming1, TANG Hao1, LIU Xue-zhi1
1. School of Opto-electronic Information, University 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 are feasible,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 the financial security field.
Keywords: Intaglio printing; Optical fiber sensor; Tiny displacement; Surface roughness; Anti-forgery
2006, 32(2): 82-85 收稿日期: 2005-7-11;收到修改稿日期: 2005-9-25
基金项目:
作者简介:
参考文献
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