A device and method for measuring the inner and outer diameters of transparent glass bottle mouths based on machine vision

Abstract

The invention discloses a device and a method for measuring internal and external diameters of a transparent glass bottleneck based on machine vision. A device instrument support comprises a support pipe arranged on a support base; a camera frame and a light source frame are arranged on a support pipe; wherein a fixed distance is arranged between the camera frame and the light source frame; a light source direction is fixed on the light source frame upwards; a black baffle is fixed above the light source; an image acquisition device camera and a lens are fixed on the camera; a computer and the camera are connected through a data transmission line; a black background plate is arranged on the support base; the device instrument support, the light source, related accessories and the image acquisition device are all arranged in a dark camera obscura; the light source is a white ring-shaped LED (light-emitting diode) light source of which the luminance can be adjusted; a fixed angle is formed between an LED lamp bead and a vertical direction; the black baffle is arranged on the surface of the light source; and a glass bottle is freely suspended above the baffle through a black elastic pad matched with the glass bottleneck. The detection method comprises the following steps of acquiring images, acquiring values, and identifying whether the bottle is qualified or not.

Description

technical field [0001] The invention relates to the field of machine vision, in particular to a machine vision-based device and method for measuring the inner and outer diameters of a transparent glass bottle mouth. Background technique [0002] At present, in the production and manufacture of domestic glass bottles, due to the limitations of the existing technology level and equipment, the inner and outer diameters of the bottle mouth have certain deviations, especially the deviation of the inner diameter, which sometimes cannot well meet the requirements of bottle users. When the user uses a glass bottle with an unqualified inner and outer diameter to fill liquid, because the deviation of the inner and outer diameter of the bottle mouth exceeds a certain range, there will be a gap between the bottle stopper and the bottle mouth, which will cause the bottle mouth and the bottle stopper to not be tightly sealed and make the glass The liquid in the bottle leaks, especially th...

AI Technical Summary

Problems solved by technology

Through this image acquisition method, the defects of the bottle mouth can be better judged, but the real inner and outer diameters of the bottle mouth cannot be obtained.

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