Optical device for detecting and identifying damaged paper money by using photosensitive element

Abstract

The invention relates to an optical device for detecting and identifying damaged paper money by using a photosensitive element. The optical device comprises a luminous tube array, a receiving tube array, a light transmission board and a bracket, wherein the light transmission board is fixedly arranged above the bracket; a luminous signal processing circuit board and a received signal processing circuit board are fixedly arranged at the inner bottom of the bracket; the inner part of the bracket is partitioned into relatively independent light detection cavities by partition walls; each light detection cavity is opposite to the luminous signal processing circuit board and the received signal processing circuit board; and the luminous tube array and the receiving tube array which are matched with each other in the light detection cavity are fixed on the luminous signal processing circuit board and the received signal processing circuit board respectively. By the optical device, the shortcomings of high error distinction rate and leakage rate, high cost, high maintenance requirement and high installation difficulty in the prior art are overcome; due to the specific design, whether various damages exist on paper money or not can be judged accurately; and the optical device has the advantages of low cost, simple structure and low mechanical installation requirement; furthermore, the optical device is not contacted with the paper money, so the optical device is not required to be maintained frequently.

Description

technical field [0001] The invention relates to banknote sorting financial equipment, in particular to an optical device in banknote sorting equipment that uses photosensitive elements to detect and identify damaged banknotes. Background technique [0002] Banknotes will inevitably be torn and damaged in the circulation of daily life and commercial activities. People often use adhesive strips to paste and repair them before continuing to use them. Therefore, in the sorting process of banknotes, it is of great practical significance to identify the adhesive strips attached to the banknotes. However, there has been no very effective method for detecting the adhesive strip on banknotes. The traditional detection method is to detect by measuring its thickness, that is, to judge whether the banknote has an adhesive strip by detecting the small increment of the banknote. But because some rubber strips are very thin, the thinnest of the most commonly used rubber strips is only 0.0...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of high misidentification and omission rate, high cost, high maintenance requirements and difficult installation in the traditional banknote detection mechanism in the prior art, the present invention provides an optical device that uses photosensitive elements to detect and identify damaged banknotes. The structure is simple, the cost is low, the requirements for mechanical installation are not high, and there is no contact with the banknotes, no need for frequent maintenance, it can accurately judge whether there are holes in the banknotes, whether there are stains, whether the banknotes are inclined when entering the sorting machine, whether there are adhesive strips and Precisely detect the position of the glue strip

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