Machine vision-based quilting broken thread detection method

Abstract

The invention relates to a quilting line breakage detection method based on machine vision. The quilting line breakage detection method comprises the following specific steps: collection, namely collecting a fabric image; correction, namely correcting the collected fabric image; calibration, namely setting an initial line breakage detection region of the fabric image; tracking, namely determining a final line breakage detection region of the fabric image; and detection, namely processing the corrected fabric image so as to obtain a quilting line of a fabric subjected to quilting, detecting the line breakage of the fabric according to whether quilting lines exist in the line breakage region of the corrected fabric image, if M quilting lines exist in the line breakage detecting region, determining the quilting fabric is free of line breakage, if the number of quilting lines in the line breakage detecting region is less than M, determining the quilting fabric suffers from line breakage, and outputting a quilter stop signal or a line breakage alerting signal through a computer. The quilting line breakage detection method provided by the invention has the advantages that the accuracy is high, the real-time detection is performed, and the energy consumption is low.

Description

technical field [0001] The invention relates to the technical field of online detection by using machine vision and image processing technology, in particular to a machine vision-based quilting broken thread detection method. Background technique [0002] When traditional fabrics are quilted, they are mainly observed by humans, which is prone to missed inspections and untimely inspections. The problem of thread breakage cannot be dealt with in time, which is likely to cause production quality defects, adversely affect production, and cause material waste. and increased production costs. [0003] With the development of technology, the existing quilting thread breakage detection circuit control board is used for reference from embroidery machines, but due to the large number, narrow installation space, complicated wiring, large energy consumption and more fault points, it is not conducive to on-site maintenance; or Contact rod / contact switch type quilting broken thread detec...

AI Technical Summary

Problems solved by technology

[0002] When traditional fabrics are quilted, they are mainly observed by humans, which is prone to missed inspections and untimely inspections. The problem of thread breakage cannot be dealt with in time, which is likely to cause production quality defects, adversely affect production, and cause material waste. and increased production costs

[0003] With the development of technology, the existing quilting thread breakage detection circuit control board is used for reference from embroidery machines, but due to the large number, narrow installation space, complicated wiring, large energy consumption and more fault points, it is not conducive to on-site maintenance; or Contact rod / contact switch type quilting broken thread detection device, but the contact rod or contact switch of the detection device is prone to poor contact after being contaminated with dust or dirt, and the contact switch is also prone to malfunction after aging Phenomena, both of which are likely to cause the alarm to be delayed in time, and the product quality cannot be monitored; or a mechanical or electrical disconnection detection device, and the disconnection detection device of this structure will make the weaving thread bear a certain pre-tightening force , it is easy to cause abnormal breakage of the weaving thread, which affects the production efficiency of the machine