Mold monitoring method based on FAST-9 image characteristic rapid registration algorithm

Abstract

A mold monitoring method based on a FAST-9 image characteristic rapid registration algorithm include the following process: when mold open of an injection molding machine is in place and after an ejector pin is ejected, standard form images are acquired respectively; operating state information of the injection molding machine is waited, when the injection molding machine is operated to the place of the mold open, images of surfaces of a mold cavity are taken continuously through a camera, current frames of the monitored images are preprocessed, and preparations are made for subsequent image rapid registration; the FAST-9 image characteristic rapid registration algorithm is carried out; after registration, differences are made between the current frames and the form images; through adoption of the ostu automatic threshold value partitioning algorithm, binaryzation of the images is achieved, and continuous closing and opening operation is conducted on the images; whether anomaly exists in molding of products is checked through electron hole detection, when the anomaly exists, alarm information is displayed; otherwise, the operating state information of the injection molding machine in the next period is waited. The mold monitoring method based on the FAST-9 image characteristic rapid registration algorithm is good in real-time performance and strong in robustness.

Description

technical field [0001] The invention relates to the injection molding machine industry in the field of industrial automation control, in particular to a mold monitoring method for an injection molding machine, and mainly relates to feature detection, image registration and image difference technologies in computer vision. Background technique [0002] In recent years, with the continuous expansion of the application field of plastic products, the global demand for injection molding machines has shown a trend of continuous and substantial increase. In order to realize the automatic protection of the mold by real-time monitoring of abnormal conditions such as mold residue, slider dislocation, and poor demoulding during the production process of the injection molding machine, mold protectors have been introduced into the injection molding industry in large numbers. This monitoring system based on image processing technology greatly improves the safety and work efficiency of inj...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of poor real-time performance and poor robustness of existing injection molding machine mold monitoring methods, which are easily affected by on-site lighting, noise, shadows and mechanical vibrations, the present invention provides a real-time performance and strong robustness. Mold monitoring method based on fast registration algorithm of FAST-9 image features

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