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Method of recognizing blank mixing in coins and apparatus thereof

A flat cake and coin technology, which is applied in the field of flat cake identification devices, can solve the problems of not being able to adapt to the production efficiency of automatic coin detection, large batches of coins to be packaged, and unsuitable for coin detection, etc., and achieve compact structure, small size, and elimination of stacked cakes Effect

Active Publication Date: 2014-02-19
NANJING BANKNOTE MINTING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing visual detection technology of coins and their analogues, whether it is double-sided or single-sided detection, uses single or single image acquisition one by one, and compares it with the standard template preset by the system to judge whether it is It has defects, but due to the large batch of coins to be packaged, the traditional method of single-coin detection one by one can no longer meet the needs of automatic coin detection production efficiency, and the coin is significantly different from the flat cake, and the traditional quality detection method is also Not suitable for detection of coins before wrapping

Method used

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  • Method of recognizing blank mixing in coins and apparatus thereof
  • Method of recognizing blank mixing in coins and apparatus thereof
  • Method of recognizing blank mixing in coins and apparatus thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (Example 1, Method for Identifying Flatcake Mixed in Coins)

[0028] A method for identifying flat cakes mixed in coins in this embodiment is to use the characteristics of different thresholds between the coin diagram and the flat pie diagram after being irradiated by the fluorescent light source 311, thereby judging whether the detected object is a flat cake, which The specific steps are:

[0029] a. The coins enter the conveyor belt 2 through the logistics line, and after the coins pass through the coin retaining brush 1 and the slope section of the conveyor belt 2, they are arranged in a single layer and enter the detection device 3 to eliminate the phenomenon of stacking cakes and create good conditions for subsequent image processing;

[0030] b. The fluorescent light source 311 of the detection device 3 irradiates the coins at an angle of 45° relative to the conveyor belt 2, and the line-scan camera 312 collects images of the incoming coins, and transmits the imag...

Embodiment 2

[0036] (Example 2, device capable of identifying flat cake mixed in coins)

[0037] See Figure 1 to Figure 4 , a kind of device that can identify the flat cake mixed in the coin of the present embodiment, has the brush 1 of retaining coin, conveying belt 2 and detection device 3; Conveying belt 2 is made up of slope section and horizontal section; Below the coin hair brush 1; the horizontal section is arranged below the detection device 3; the coin retaining brush 1 is arranged perpendicular to the slope section of the conveyor belt 2, and the distance between the coin retaining brush 1 and the conveying belt 2 is greater than a coin or The thickness of the flat cake is less than the thickness of two coins or the flat cake; the detection device 3 has an image acquisition device 31 and an industrial computer 32; the image acquisition device 31 has a fluorescent light source 311 and a line-scan camera 312; the line-scan camera 312 is movably arranged on the conveyor Above the ...

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Abstract

The invention relates to a method of recognizing a blank mixing in coins and an apparatus thereof. A transmission belt, a coin blocking hairbrush, a line scanning camera and a fluorescent light source are comprised. Through using a characteristic that a threshold of a coin graph and a threshold of a blank graph are different after light source irradiation, whether a detection object is the blank is determined. According to the method and the apparatus of the invention, because a surface of each coin has a pattern and a surface of the blank does not have a pattern, after the coin or the blank is irradiated by a 45 degree angle light source, the thresholds of the extractive coin graph and the blank graph are different so that whether the detection object is the blank is determined. A batch of coins can be detected. Detection efficiency is high. The structure of the apparatus is compact and the size is small.

Description

technical field [0001] The invention relates to a flat cake identification device, in particular to a method and device for identifying flat cakes mixed in coins. Background technique [0002] With the improvement of the automatic production efficiency of coins, the automatic detection efficiency of coins is also subjected to more and more tests, especially before the coins are packaged, the coins must be detected to prevent the flat cake from being mixed into it. At present, the existing visual detection technology of coins and their analogues, whether it is double-sided or single-sided detection, uses single or single image acquisition one by one, and compares it with the standard template preset by the system to judge whether it is It has defects, but due to the large batch of coins to be packaged, the traditional method of single-coin detection one by one can no longer meet the needs of automatic coin detection production efficiency, and the coin is significantly differe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07D7/20G07D5/00
Inventor 张强勇冯剑周超王磊
Owner NANJING BANKNOTE MINTING
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