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Optical system for detecting vertical surface and outline of coin on line

An optical system and coin facade technology, applied in the direction of using optical devices, material analysis through optical means, measuring devices, etc., can solve problems such as quality defects, and achieve the effects of simple structure, good imaging effect, and accurate recognition results

Inactive Publication Date: 2012-07-04
王华 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]On-line detection of the 360-degree circumferential facade of coins is currently a technical problem. At present, there is no online detection method to solve the quality defects of the facade

Method used

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  • Optical system for detecting vertical surface and outline of coin on line
  • Optical system for detecting vertical surface and outline of coin on line
  • Optical system for detecting vertical surface and outline of coin on line

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Experimental program
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Embodiment Construction

[0017] Below in conjunction with the embodiment shown in the accompanying drawings, the present invention is described in detail as follows:

[0018] as attached figure 1 As shown, the coin facade and contour online detection optical system of the present invention includes a glass plate 2 for carrying the coin 1, a ring light source 3 concentrically arranged above the coin 1, a curved mirror 4 concentrically arranged below the coin 1, and a concentric The backlight 5 arranged under the coin 1, the inner diameter of the ring light source 3 is greater than the outer diameter of the coin 1 to ensure that the facade of the coin 1 can be illuminated and then reflected by the curved mirror 4, and the center of the ring light source 3 is located on the coin 1, the image acquisition device 6 directly above the center of the circle, wherein the annular light source 3 has several LED light sources distributed along the circumferential direction, and its light emitting angle is inc...

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Abstract

The invention discloses an optical system for detecting a vertical surface and an outline of a coin on line. The optical system comprises a glass plate for bearing the coin, an annular light source concentrically arranged above the coin, a curved surface reflector concentrically arranged below the coin and a back light source concentrically arranged below the coin; the inner diameter of the annular light source is greater than the outer diameter of the coin, so light illuminating the vertical surface is reflected by the curved surface reflector to form an image; and an image acquisition device positioned above the center of the coin is arranged above the annular light source. The optical system integrates an optical illumination technology, an automatic control technology and a comprehensive identification method for image acquisition and image processing, so that the imaging effect is good, the identification result is accurate; the structure is simple, and the system is easy to implement. Besides, the optical system can be widely applied to identification of hidden patterns and characters on metal coins and commemorative coins in financial systems all over the world.

Description

technical field [0001] The invention relates to an optical system for on-line detection of coin facades and contours. Background technique [0002] At present, with the rapid development of the economy, a large amount of currency circulation is required in the market. In the process of product forming, the molds will be damaged to varying degrees, resulting in defects in the surface quality of the printed coins. In order to ensure that each In order for coins to meet factory quality requirements before circulation, a comprehensive surface quality inspection of coins is required. [0003] On-line detection of the 360-degree circumferential facade of coins is currently a technical problem. At present, there is no online detection method to solve the problem of quality defects in the facade. Contents of the invention [0004] The object of the present invention is to provide an optical system for on-line detection of coin facade and contour, which can effectively detect qual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/24G01N21/952
Inventor 王华吴时欣
Owner 王华
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