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Automatic detecting method of machine vision system for detecting detained needle bushing burrs

A machine vision system and automatic detection technology, applied in the direction of instruments, measuring devices, optical devices, etc., can solve the problems of high labor intensity, inability to guarantee the quality of product qualification rate inspection, and low monitoring speed, so as to prolong the production time and reduce the production time. Detect labor intensity and improve the effect of utilization

Active Publication Date: 2012-06-13
WUXI ZHONGWANG 4D TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the existing problems that the online detection of indwelling needle bushing burrs relies on manual detection, the workers are prone to visual fatigue, the labor intensity is high, the product qualification rate and detection quality cannot be guaranteed, and the monitoring speed is low. The present invention provides a machine vision The system's automatic detection method for the burr of the indwelling needle bushing greatly reduces the labor intensity of the worker's detection, with high detection accuracy and fast speed, which can effectively ensure the pass rate of the factory products

Method used

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  • Automatic detecting method of machine vision system for detecting detained needle bushing burrs
  • Automatic detecting method of machine vision system for detecting detained needle bushing burrs
  • Automatic detecting method of machine vision system for detecting detained needle bushing burrs

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Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1, to the detection of protruding burr product:

[0034] Such as figure 2 The image of the protruding glitch shown, where the protruding part in the upper right is the visual figure of the protruding glitch.

[0035] Fix the Basler ACA640-100GM industrial camera on the side of the indwelling needle bushing, the distance between the camera and the side of the indwelling needle bushing is about 20mm, use the Schneider 50 times zoom zoom lens, adjust the focal length to 16mm, adjust the aperture To the maximum value, the exposure time is adjusted to 0.41ms. The protruding burr detection accuracy is set to 0.001um, and the maximum horizontal length of the normal protruding burrs of qualified products is set to 0.01um. A special white fiber optic point light source is used to illuminate from the opposite side of the camera (backlight), and a semi-closed metal frame is used to shield the influence of external stray light, so as to obtain a visual image more stab...

Embodiment 2

[0040] Embodiment 2, to the detection of notch and burr product:

[0041] Such as image 3 The image of the dent burr (open bubble defect) shown, in which the upper right notch part is the visual figure formed by the dent burr.

[0042] Fix the Basler ACA640-100GM industrial camera on the side of the indwelling needle bushing, the distance between the camera and the side of the indwelling needle bushing is about 20mm, use the Schneider 50 times zoom zoom lens, adjust the focal length to 16mm, adjust the aperture To the maximum value, the exposure time is adjusted to 0.41ms. The detection accuracy of notches and burrs is set to 0.001um, and the maximum transverse length of normal notches and burrs of qualified products is set to 0.01um. A special white fiber optic point light source is used to irradiate from the opposite side of the camera (backlight), and a semi-closed metal frame is used to shield the influence of external stray light, so as to obtain a visual image more st...

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Abstract

The invention provides an automatic detecting method of a machine vision system for detecting detained needle bushing burrs, wherein transverse lengths of protruding burrs and sunken burrs at an inclined surface of an end part of the detained needle bushing are set as detecting parameters, detecting precision and qualification range of different detecting parameters are set according to requirements of users, a camera is started by an external trigger and control signal to photograph in real time images of the on-line moving detained needle bushing, the photographed images are transmitted to a computer for detection, the images of the detained needle bushing containing burrs are extracted through image algorithmic process by the computer, sizes of two types of burrs are calculated, products are judged to be qualified or waste according to the calculated sizes of the burrs, and the waste products are taken out from a specified discharge opening through the external trigger and the control signal. The automatic detecting method of the machine vision system for detecting detained needle bushing burrs has high precision and speed in detecting the burrs of the detained needle bushing, and can effectively ensure the qualification rate of the products.

Description

technical field [0001] The invention relates to the technical field of online detection by using a machine vision system, in particular to a method for automatically detecting whether there is a burr in the indwelling needle bush by using a machine vision system at the production site of the indwelling needle bush. Background technique [0002] Indwelling needles are devices used for infusion, blood transfusion, and extracorporeal blood circulation. The indwelling needle keeps the needle tube on the top of the indwelling needle bushing, and the rear end of the indwelling needle bushing is connected with the infusion tube. Medical personnel penetrate the patient's body with the needle tube and the hub. Thereafter the needle is withdrawn and the hub is left in the patient's body. The indwelling needle hub is connected with the infusion device for infusion. [0003] In the assembly workshop of the indwelling needle bushing in the assembly line of the assembly line, it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/89G01B11/04
Inventor 董仲伟
Owner WUXI ZHONGWANG 4D TECH