Coin edge quality detection method and its detection device
A quality detection method and coin technology, which are applied to a device for detecting the quality of a coin edge, and the field of detecting the quality of a coin edge, can solve problems such as image distortion of the coin edge, and achieve the purpose of eliminating imaging differences, improving detection ability, and improving detection accuracy. Effect
Active Publication Date: 2019-06-04
ZHONG CHAO GREAT WALL FINANCIAL EQUIP HLDGCO +2
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Problems solved by technology
In the existing detection device, due to the aberration of the side of the coin relative to the lens of the image acquisition device, the image of the edge of the coin obtained is distorted, and this type of detection device is limited by the optical path, and can only detect the edge of the coin. Individual imaging detection
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[0026] The technical content of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0027] The edge quality detection method of the coin provided by the invention realizes the detection of the edge quality of the coin by obtaining an enlarged image of the edge of the coin and comparing it with a data model of the image to judge the quality of the edge. Specifically, first, detect whether the coin enters the detection station, and when the result is yes, turn on the light source and camera in the optical imaging system; then, obtain the edge of the coin through the edge reflector and telecentric lens in the optical imaging system Enlarge the image; finally, compare the enlarged image of the edge with the data model of the image through the image processing system to judge the quality of the edge of the coin.
[0028] In this detection method, the industrial counter tube detects whether the coin enters...
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The invention discloses a coin edge quality detecting method and a detecting device thereof. According to the detecting device, industrial geminate transistors are used for detecting whether a coin enters a detecting station; an optical imaging system with edge reflectors and a telecentric lens is used for obtaining edge amplification images of the obtain, and an image processing system compares the edge amplification images with the data models of the images to judge the edge quality of the coin. According to the coin edge quality detecting method and the detecting device thereof, on the one hand, the edge images of the coin is amplified at a certain scale through accurate light path design to improve the detecting precision of the edge quality of the coin, and on the other hand, through imaging of the telecentric lens, the imaging differences of the edge of the coin in different imaging surfaces can be eliminated, so that no distortion exists in the offset images of the coin under the condition that dynamic detection is guaranteed, and further the detecting capacity to the edge pattern quality and the edge anti-fake features of the coin can be improved.
Description
technical field [0001] The invention relates to a method for detecting the edge quality of coins, and at the same time relates to a device for detecting the edge quality of coins, which belongs to the technical field of coin quality detection. Background technique [0002] As a financial currency, coins are widely circulated in the market. However, there are not many detection devices for anti-counterfeit features of coins on the market, and even fewer detection devices for anti-counterfeit features of coin edges. Therefore, in the printing and circulation process of coins, it is particularly important to effectively detect the edge quality and anti-counterfeiting features of coins. For this reason, it is necessary to provide a detection device for detecting the edge quality of coins. [0003] In the prior art, aiming at detecting the edge quality of coins, the facade and outline of coins are mainly detected by optical imaging. Such as the coin facade and contour online d...
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IPC IPC(8): G07D5/10
Inventor 张正王学文刘艳华曹扬郑镇鑫李志军
Owner ZHONG CHAO GREAT WALL FINANCIAL EQUIP HLDGCO