Method and device for detecting optically variable ink of RMB paper money

A technology of optically variable ink and RMB, applied in the field of RMB detection, can solve the problems of high technical difficulty, high cost of line image sensor, unfavorable promotion, etc., and achieve the effect of improving identification accuracy, simple method and low cost.

Inactive Publication Date: 2012-06-20
南京理工速必得科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is technically difficult to implement and the cost of line image sensors is high, which is not conducive to popularization

Method used

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  • Method and device for detecting optically variable ink of RMB paper money
  • Method and device for detecting optically variable ink of RMB paper money
  • Method and device for detecting optically variable ink of RMB paper money

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Embodiment Construction

[0022] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] A method for detecting optically variable ink on RMB banknotes, comprising the following steps:

[0024] Step 1: Before the banknotes are sent, the light emission module 1, the vertical color sensor 2 and the angled color sensor 3 start to work, the light emission module 1 emits a beam of light at an angle between 40° and 90°, and the vertical color sensor 2 And the angled color sensor 3 starts to receive reflected light, and the light received at this time is invalid light; the light emitting module generally adopts a white light emitter.

[0025] Step 2: The banknote moves along the moving direction of the banknote to the sensing area of ​​the vertical color sensor 2 and the angled color sensor 3, and the vertical color sensor 2 and the angled color sensor 3 start to collect the light signal reflected by the banknote face. The range of collec...

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PUM

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Abstract

The invention discloses a method and a device for detecting RMB, in particular to a method and a device for detecting the optically variable ink of the RMB paper money. The method comprises the following steps: system initialization, paper money chromaticness parameter acquisition, data processing and result output, and other steps; and the device comprises a light emission module, a vertical color sensor, a sensor with angle and color, a data acquisition module and the like. According to the invention, the authenticity of the RMB can be detected through the acquisition and comparison of the chromatic aberration of the reflected light of the optically variable ink. Therefore, the invention has the advantages of simplicity, low cost in application, and high detection precision.

Description

technical field [0001] The invention relates to the field of RMB detection, in particular to a method and device for detecting optically variable ink of RMB banknotes. Background technique [0002] Through the understanding of the anti-counterfeiting features of the new version of RMB banknotes that have been announced, the optical variable ink anti-counterfeiting technology has the characteristics of showing green and blue (or dark green) under visible light conditions at different angles. This anti-counterfeiting technology has not yet been produced. Counterfeiters imitate, mainly because the optical variable ink materials involved in this technology have outstanding characteristics and are difficult to imitate. The optical variable ink anti-counterfeiting technology has built an indestructible line of defense for the anti-counterfeiting of RMB banknotes. [0003] It is reported that counterfeit 100-yuan banknotes with fake light-changing ink appear on the market at prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07D7/12G07D7/121
Inventor 张跃龙杨志坚赵宝昌
Owner 南京理工速必得科技股份有限公司
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