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System and method for online automatically detecting defects on glass surface of touch screen

An automatic detection and glass surface technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of slow detection speed, high labor cost, human eye fatigue and other problems of visual method, so as to improve the detection efficiency and detection accuracy , high detection accuracy and high detection efficiency

Active Publication Date: 2016-05-04
HANGZHOU JINGNAIKE OPTOELECTRONICS TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The visual method is greatly affected by the proficiency of the inspected person and is highly subjective, and long-term inspection will cause human eye fatigue, resulting in misjudgment and missed inspection of defects
At the same time, the detection speed of the visual method is slow, the missed detection rate is high, and the reliability is poor. There is no way to realize the assembly line detection of the entire production process.
A large number of workers need to be recruited and trained, and the labor cost is high, which is contrary to the country's national policy of developing labor-intensive industries into technological innovation

Method used

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  • System and method for online automatically detecting defects on glass surface of touch screen
  • System and method for online automatically detecting defects on glass surface of touch screen
  • System and method for online automatically detecting defects on glass surface of touch screen

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Embodiment

[0062] The surface defect detection test is carried out for the touch screen mobile phone cover plate used in mobile phones. The size of the tested mobile phone cover is 63.3 (mm) × 129.6 (mm), and the original grayscale image of the mobile phone cover is obtained after scanning, such as Figure 7 As shown, the collected image contains not only the grayscale image of the mobile phone cover, but also some useless redundant information. In order to improve the speed of subsequent image feature extraction, less data processing is required. Therefore, the image can be corrected through transformations such as rotation, translation, and miscutting, as well as edge extraction, to obtain an image that only contains the mobile phone cover, such as Figure 8 shown. Since the physical position of the feature area of ​​the mobile phone cover relative to the frame of the mobile phone is relatively fixed, the position of the frame image can be extracted according to the corrected image, a...

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Abstract

The invention discloses a system and a method for online automatically detecting defects on a glass surface of a touch screen. The system comprises a driving part, an imaging part and a screening part, wherein the driving part is used for sending touch screen glass to the imaging part; the imaging part is used for detecting if the glass surface of the touch screen has defects; the screening part is used for removing the touch screen glass having defects; the driving part comprises three driving units; the three driving units are fixedly connected with a bottom fixing plate; each driving unit comprises a bottom fixing plate, a servo motor, a driving shaft, a magnetic transmission gear driving wheel, a magnetic transmission gear driven wheel and a driven shaft; and the imaging part and the screening part are respectively arranged on the middle and last driving units. The system provided by the invention has the advantages of high detection precision, high efficiency and capability of quantitative recognition. Non-contact magnetic gear pairs serve as the driving media, so that the system provided by the invention has non-contact, noiseless, vibration-free and pollution-free characteristics and are fit for the detection process for the touch screen glass in a dust-free environment.

Description

technical field [0001] The invention belongs to the field of machine vision detection, and relates to an online automatic detection system and method for glass surface defects of a touch screen. Background technique [0002] Touch screen glass components are widely used in various production fields of the national economy, in daily work and public life, such as display screens, mobile phone panels, ipads, various industrial and household glass panels, etc. When there are scratches, chipping and other defects on the surface of the glass component panel of the touch screen, it will greatly affect the functional quality index and aesthetics of the product. The assembly line operation in industrial production is very important for improving the quality of products and realizing the transformation and upgrading of enterprises. [0003] The traditional detection method for touch screen glass components is mainly the visual method. Workers place the surface of the touch screen gla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/896
CPCG01N21/896
Inventor 杨甬英曹频李晨熊浩亮许文林
Owner HANGZHOU JINGNAIKE OPTOELECTRONICS TECH CO LTD
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