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。
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 displacernent 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.
出处
《中国测试技术》
2006年第2期82-85,共4页
CHINA MEASUREMENT & TESTING TECHNOLOGY
关键词
凹版印刷
光纤传感器
微位移
表面粗糙度
防伪
Intaglio printing
Optical fiber sensor
Tiny displacement
Surface roughness
Anti-forgery
