On-line defect detection system and method for thin bamboo strips based on machine vision

Abstract

The invention discloses an on-line defect detection system and method for thin bamboo strips based on machine vision. The on-line defect detection system comprises an industrial personal computer, a PLC, an air pump, two electromagnetic valves, two air knives, an isolation board, a line-array camera, an area-array camera, two motors, two narrow conveyor belts and four photoelectric sensors, wherein the conveyor belts convey thin bamboo strips to the area-array camera and the line-array camera; front side and reverse side images of thin bamboo strips are collected, and the images are input into the industrial personal computer for image pretreatment; profile and surface defects are detected, so as to obtain three types of products, namely products with profile defects, products with surface defects and products without defects; the classification result is output to the PLC through a serial port, and the electromagnetic valves are controlled to be opened through the PLC, and products with profile defects and surface defects are removed; if no defect is detected, the PLC fails to actuate. According to the on-line defect detection system and method for thin bamboo strips based on machine vision, the problems of missing defection and false detection in manual detection are avoided, and the detection accuracy is improved; moreover, historical data is stored by utilizing a database, the querying is convenient, and the counting is accurate; and besides, the system has a clear structure and is simple in operation.

Description

technical field [0001] The invention relates to an information image processing method, in particular to a machine vision-based on-line detection system and detection method for bamboo sheet defects. Background technique [0002] Bamboo slices are thin slices split from bamboo, and are widely used in bamboo handicrafts such as fans and summer mats. First, the bamboo slices are divided into thinner strips by the crushing machine, such as Chinese patent announcement CN 105835144A (announcement date: August 10, 2016) discloses a high-efficiency bamboo crushing machine. Due to the variety, quality or storage time of bamboo, there are certain defects, such as contour defects, surface texture defects, etc. Usually, products with contour defects are waste products; products with surface texture defects are called defective products, and the price is lower; products with neat lines are genuine products, and the price is higher. At present, manufacturers are still using traditional...

AI Technical Summary

Problems solved by technology

The detection efficiency of this method is low, and there are often too many missed and false detections due to human fatigue, and the labor cost is high.

Images