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Improved fake currency detector using visual and reflective spectral response

A banknote, fluorescent technology used in the field of improved banknote detectors using visual inspection and reflectance spectral response

Inactive Publication Date: 2007-04-18
COUNCIL OF SCI & IND RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0065] There is currently no technology for automatic, authentic and valid identification of polymer-based banknotes, passports, visas and various bank notes

Method used

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  • Improved fake currency detector using visual and reflective spectral response
  • Improved fake currency detector using visual and reflective spectral response
  • Improved fake currency detector using visual and reflective spectral response

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0174] To perform an experimental test of the proposed device, a fake Indian banknote of denomination "A" is tested. Table I shows that the reflectance readings of the counterfeit banknotes in the yellow and red light bands are within acceptable ranges, indicating that the banknotes are genuine. However, the counterfeit bill's blue light band readings clearly identified it as counterfeit. While counterfeit notes exhibit sufficient fluorescent security features, UV light evaluation cannot identify counterfeit notes as authentic.

example 2

[0176] For experimental testing of the proposed device, fake Indian banknotes of denomination “B” (sequence-2) are tested. Table II shows that the blue and yellow bands reflectance readings are outside the allowable range, while the red bands are true. While counterfeit notes exhibit sufficient fluorescent security features, UV light evaluation cannot identify counterfeit notes as authentic. Experiments have shown that for those advanced counterfeit notes that include all UV-Vis security features, at least two or three light bands of data are required to identify their authenticity.

example 3

[0178]For the experimental testing of the proposed device, a large number of real Indian banknotes of denominations 'A', 'B', 'C' are used for testing with moderate usage. The results show that using the reference data of Tables I-III and using the "2 / 3 acceptance principle" to detect these banknotes, the results are all genuine banknotes. Visible light detection also confirmed these results.

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PUM

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Abstract

A currency genuineness detection system with visual discrimination complemented by automatic discrimination using plurality of opto-electronic sensors with reflective and fluorescence properties of security documents is developed. The detection sensing strategy utilizes integrated response of the wide optical band sensed under UV visible along with optional near infra red light illumination. A security document is examined under static condition. A window signalsignature is thus possible from the photodetectors responses for various kinds of documents of different denominations, kinds and country of origin. A programmable technique for checking the genuineness of a security document is possible by feeding a unique code of the currency under examination.

Description

technical field [0001] The invention relates to the development of an improved system for automatic detection of the authenticity of securities by measuring the reflected components of incident energy in three or more light bands. The system includes the use of ultraviolet, visible and optionally near-infrared light sources, photodetectors and associated sensing circuitry. The present invention relates to the use of photodetectors to generate photoelectric signals from reflected energy received by securities to verify the authenticity of securities under irradiation with ultraviolet, visible, and optionally near-infrared light. The process includes measuring reflected energy in at least three light bands as a photoelectric signature of the document by appropriately positioned photodetectors, and distinguishing counterfeit documents from genuine documents for final LED indicator display and audio-visual alarm. Electrical signal processing, thereby carrying out the detection of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07D7/12
CPCG07D7/121G07D7/122G07D7/1205G07D7/12
Inventor 穆利·马诺哈尔·乔希拉姆·普拉喀什·巴吉帕高达姆·迈特拉哈里·博哈高·纳瑞亚娜萨洛·巴特拉
Owner COUNCIL OF SCI & IND RES
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