Method for detecting liquid surface foreign matter of transparent glass bottles

Abstract

The invention discloses a method for detecting the liquid surface foreign matter of transparent glass bottles and mainly aims to solve the problems that in existing methods for detecting the liquid surface foreign matter of the transparent glass bottles, a high-speed rotation method cannot detect transparent foreign matter with low density, and a static method has a large blind area and easily causes false detection or missing detection in the prior art.The method includes: rotating the transparent glass bottles to allow liquid and the foreign matter to move jointly so as to achieve tracing detection and eliminate the blind area; stopping rotating, standing for 2-3 seconds to allow the liquid surfaces to become stable slowly while the foreign matter still moves, using a backlight camera and a polarized-light camera to respectively collect the backlight effect pictures and the polarized light effect pictures of the transparent glass bottles, and treating with a tracing algorithm to detect the transparent glass bottles with the foreign matter, wherein the more appropriate the standing time is, the more stable the liquid surface is.By the arrangement, the method can accurately and fast detect the foreign matter.

Description

technical field [0001] The invention relates to the technical field of light inspection machine detection, in particular to a method for detecting foreign matter on the liquid surface of a transparent glass bottle. Background technique [0002] In the actual production process, there may be some foreign objects with low density floating on the surface of the liquid in the liquid products in transparent glass bottles. In the industry currently engaged in the research and development of automatic detection equipment, the current methods for liquid level detection mainly include high-speed rotation method, static detection, etc., but these methods have no way to effectively and completely solve the problem of the detection accuracy of liquid surface foreign objects. Problems, among them, the high-speed rotation method cannot detect transparent foreign matter with a small density, while the static method is easily disturbed by liquid level fluctuations, and there is a large blin...

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is that in the existing methods for detecting foreign matter on the liquid surface of transparent glass bottles; the high-speed rotation method cannot detect transparent foreign matter with a small density; the static method has a large blind area and is prone to false detection or missed detection