Method for automatically detecting foreign matter of medical product package by using machine vision system

A machine vision system and product packaging technology, applied in the direction of optical testing defects/defects, can solve the problems of low monitoring speed, high labor intensity, and inability to guarantee the quality of product qualification rate inspection, so as to prolong production time, improve utilization rate, The effect of reducing the labor intensity of inspection

Inactive Publication Date: 2012-01-04
WUXI ZHONGWANG 4D TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art that the on-line detection of foreign matter in medical product packaging relies on manual detection, workers are prone to visual fatigue, labor intensity is high, the product qualification rate and detection quality cannot be guaranteed, and the monitoring speed i

Method used

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  • Method for automatically detecting foreign matter of medical product package by using machine vision system
  • Method for automatically detecting foreign matter of medical product package by using machine vision system
  • Method for automatically detecting foreign matter of medical product package by using machine vision system

Examples

Experimental program
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Effect test

Example Embodiment

[0032] Embodiment 1, to the detection of qualified medical product packaging bag:

[0033] like figure 1 An image of a medical product packaging bag is shown, which is a visual graphic of no foreign objects.

[0034] Fix the Basler ACA640-100GM industrial camera directly above the medical product packaging bag. The distance between the camera and the front of the medical product packaging bag is about 100mm. A Schneider zoom lens is used, the focal length is adjusted to 8mm, the aperture is adjusted to the maximum value, and the exposure is The time is adjusted to 0.41ms. A special white LED bowl light source is used to illuminate the same side of the medical product packaging bag from the camera (positive light), and a semi-closed metal frame is used to shield the influence of external stray light, so as to obtain visual images more stably, reflecting medical treatment. Distinctive features of product packaging bags. The LED bowl light source of this project uses CCS compa...

Example Embodiment

[0040] Embodiment 2, to the detection of the medical product packaging bag with foreign body:

[0041] like figure 2 An image of a medical product packaging bag is shown, which is a visual representation of a foreign object.

[0042]Fix the Basler ACA640-100GM industrial camera directly above the medical product packaging bag. The distance between the camera and the front of the medical product packaging bag is about 100mm. A Schneider zoom lens is used, the focal length is adjusted to 8mm, the aperture is adjusted to the maximum value, and the exposure is The time is adjusted to 0.41ms. A special white LED bowl light source is used to illuminate the same side of the medical product packaging bag from the camera (positive light), and a semi-closed metal frame is used to shield the influence of external stray light, so as to obtain visual images more stably, reflecting medical treatment. Distinctive features of product packaging bags. The LED bowl light source of this proje...

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Abstract

The invention provides a method for automatically detecting a foreign matter of a medical product package by using a machine vision system, which comprises the following steps of: pre-shooting an image of a medical product packaging bag without the foreign matter, identifying various parts in the packaging bag, and numbering the various parts to form a standard library; setting whether a part which does not exist in the standard library exists in the image of the medical product packaging bag as a detection parameter; starting a camera through an external trigger and control signal to shoot the image of the on-line operated packaging bag in real time, transmitting the shot image to a computer for detection, and processing to identify the various parts in the packaging bag by using the computer through an image algorithm and a pattern recognition algorithm; and detecting whether any one part in the packaging bag has a corresponding number in the standard library or not, judging whether the product belongs to a qualified product or a defective product which can be reprocessed, and removing the defective product which can be reprocessed from a specified discharge hole through the external trigger and control signal. By the method, the detection accuracy and speed of the foreign matter of the medical product package are high, and the product yield can be effectively ensured.

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 are foreign objects in the medical product packaging by using a machine vision system at the medical product packaging site. Background technique [0002] In the medical product packaging site of assembly line operation, it is necessary to conduct online detection for the presence of foreign matter in the packaging bag. In the prior art, the online detection of foreign matter in medical product packaging relies on manual detection, and about 80 people are set up next to the packaging bag production machine to detect and process foreign matter in medical product packaging. Foreign matter) and non-conforming products (packaging with foreign matter). Unqualified products need to undergo secondary processing, waiting to remove foreign matter in the package. [0003] The disadvantages of man...

Claims

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Application Information

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IPC IPC(8): G01N21/89
Inventor 董仲伟
Owner WUXI ZHONGWANG 4D TECH
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