Device and method for accurately acquiring bottle cap image based on iterative control

Abstract

The invention discloses a device and a method for accurately acquiring a bottle cap image based on iterative control. The device comprises a control module, an image acquisition module, a mechanical motion module and a worktable, wherein the control module comprises a control unit and an upper computer; the image acquisition module comprises an infrared emitter, an infrared receiver, a camera anda light source; the mechanical motion module comprises an adjustable-speed motor and a speed regulator; the worktable comprises a supporting platform, a rotating platform, a swivel bearing, a bracketand a conveyor belt. According to the invention, an image processing technology is used to automatically judge an offset error between a current photographing center and a bottle cap, and an iterativecontrol method is used to continuously change the input amount, so that the actual output of a system tracks an ideal expected output signal, the uncertainty interference generated when an image processing system positions the center of the bottle cap is overcome, and accurate photographing acquisition of the bottle cap image in high-speed motion is realized.

Description

technical field [0001] The invention belongs to the technical field of control, and relates to a device and method for accurately acquiring bottle cap images based on iterative control. Background technique [0002] Obtaining high-quality images of the inspected workpiece is a necessary condition for machine vision inspection. However, in the intelligent manufacturing of bottle cap filling, the bottle caps move at high speed on the production line, accompanied by mechanical vibration and random swing of the line, and the camera is installed on the boom. Factors such as mechanical stress deformation and sensing error of the sensor cause great interference to accurately capture high-quality bottle cap images. Only when the complete image of the bottle cap is obtained with high quality can the defects of the image of the bottle cap be effectively detected, that is, when the sensor detects the arrival of the workpiece, the control unit should eliminate many disturbances, accurat...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, especially to solve the existing high-speed bottle cap image acquisition method, which is affected by the mechanical vibration and random swing of the assembly line, as well as the mechanical stress deformation of the camera mounting arm and the induction error of the sensor. An issue that resulted in inaccurate bottle cap image acquisition

Images