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Method of automatically detecting part position of self-destruction syringe by using machine vision system

A machine vision system and automatic detection technology, which is applied in the direction of instruments, measuring devices, optical devices, etc., can solve the problems of workers prone to visual fatigue, low monitoring speed, high labor intensity, etc., and achieve the effect of reducing the labor intensity of detection

Active Publication Date: 2012-06-20
WUXI ZHONGWANG 4D TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of the existing technology that the online detection of the position of the self-destructing syringe parts 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 The automatic detection method of the position of the self-destructing syringe parts by the vision system greatly reduces the labor intensity of the detection of workers, and the detection accuracy is high and the speed is fast, which can effectively ensure the pass rate of the manufactured products

Method used

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  • Method of automatically detecting part position of self-destruction syringe by using machine vision system
  • Method of automatically detecting part position of self-destruction syringe by using machine vision system
  • Method of automatically detecting part position of self-destruction syringe by using machine vision system

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Effect test

Embodiment 1

[0030] Embodiment 1, to the detection of qualified product:

[0031] Such as figure 1 Shown image of a self-destructing syringe plunger with a barbed metal plate mounted in the middle.

[0032] Fix the Basler ACA640-100GM industrial camera on the side of the self-destructing syringe, the distance between the camera and the side of the self-destructing syringe is about 20mm, use the Schneider 50 times magnification 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 is set to 0.5mm, and the normal distance between the barbed metal sheet of the qualified product and the lower end of the self-destructing syringe push rod is set to 11.5um. A special white LED bowl light source is used to irradiate from the same side of the camera (positive light), and a semi-closed metal frame is used to shield the influence of stray light from the outside, so as to obtain a visual image more s...

Embodiment 2

[0037] Embodiment 2, to the detection of qualified product:

[0038] Such as figure 2 Shown image of a self-destructing syringe plunger with a barbed metal plate mounted in the middle.

[0039]Fix the Basler ACA640-100GM industrial camera on the side of the self-destructing syringe, the distance between the camera and the side of the self-destructing syringe is about 20mm, use the Schneider 50 times magnification 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 is set to 0.5mm, and the normal distance between the barbed metal sheet of the qualified product and the lower end of the self-destructing syringe push rod is set to 11.5um. A special white LED bowl light source is used to irradiate from the same side of the camera (positive light), and a semi-closed metal frame is used to shield the influence of stray light from the outside, so as to obtain a visual image more s...

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Abstract

The invention provides a method of automatically detecting a part position of a self-destruction syringe by using a machine vision system. The method comprises the steps of: setting an installation position of a metal sheet with thorns in a push rod of a self-destruction syringe as a detection parameter; setting detection precisions and set values of different detection parameters according to user requirements; starting up a camera by an outer triggering and controlling signal to take images of the push rod of the self-destruction syringe which is in on-line operation in real time; transmitting the taken images to a computer for detection; processing by the computer through an image algorithm and extracting images of the push rod of the self-destruction syringe; calculating the installation position of the metal sheet with thorns in the push rod of the self-destruction syringe; judging whether the product is a qualified product or a waste product through a calculated distance value; and removing the waste product from an appointed discharge port through the outer triggering and controlling signal. The method of automatically detecting the part position of the self-destruction syringe by using the machine vision system, disclosed by the invention, has high precision and high speed for detecting the part position of the self-destruction syringe and can be used for efficiently guaranteeing the qualified rate of 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 a barbed metal sheet in a self-destructing syringe is installed in a correct position by using a machine vision system at the assembly site of the self-destructing syringe. Background technique [0002] The self-destructing syringe includes a needle, a jacket, a piston and a push rod. The four sides of the push rod are continuous zigzag steps from the middle to the piston. There is an elastic Y-shaped barbed metal sheet between the push rod and the jacket, and the two ends of the barbed metal sheet It has a certain degree of curvature, can be stuck on the push rod, and is installed at the upper end between the push rod and the jacket. When the injection is completed, the barbed metal sheet will be brought to the bottom of the jacket by the continuous zigzag steps on the push rod, so that the pu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88G01B11/02
Inventor 董仲伟
Owner WUXI ZHONGWANG 4D TECH