CN210405433U - Mobile phone screen backlight foreign matter defect diagnosis device based on machine vision - Google Patents
Mobile phone screen backlight foreign matter defect diagnosis device based on machine vision Download PDFInfo
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- CN210405433U CN210405433U CN201921481280.7U CN201921481280U CN210405433U CN 210405433 U CN210405433 U CN 210405433U CN 201921481280 U CN201921481280 U CN 201921481280U CN 210405433 U CN210405433 U CN 210405433U
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Abstract
The utility model provides a cell-phone screen foreign matter defect diagnostic device in a poor light based on machine vision, the device comprise CCD industry camera, lens hood, sidelight device, support, cell-phone screen conveyer, cell-phone screen fixing device, workstation, pressure sensor, baffle, seal machine, cell-phone screen lighting device, host computer, image acquisition card. The defects of the mobile phone screen are detected by human eyes at present, so that the mobile phone screen has subjectivity, the accuracy of defect detection can be improved by machine vision-based detection, the detection efficiency is improved, and the detection cost is reduced. Compared with a general detection device, the device for detecting the mobile phone screen has the advantages that the mobile phone screen is more attached to the detection characteristic of the mobile phone screen, the device has stronger adaptability and stability, and meanwhile, the addition of the sidelight greatly increases the detection accuracy.
Description
Technical Field
The utility model relates to a defect diagnosis's technical field particularly, especially relates to a foreign matter defect diagnosis device is shaded to cell-phone screen based on machine vision.
Background
Today, mobile phones of various sizes and models are full of all parts of the world with the rapid development of industrial production, and the product updating speed is rapid and glaring. For the defect detection of the mobile phone screen, manual detection is time-consuming and labor-consuming, most of automatic detection algorithms based on machine vision can only detect several types of screens, and the requirements of mobile phone screen manufacturers cannot be met. For mobile phone screen manufacturers, it is urgent to find a set of efficient, accurate and universal automatic detection equipment to replace manual detection. Machine vision (also known as computer vision) technology has been accumulating and precipitating for over 30 years. The technology is a simulated biological vision technology which is realized by combining a computer and a camera, and relates to a plurality of professional fields of mathematics, image acquisition, image recognition, computer science, optics, machine learning and the like. The computer carries out calculation analysis on various parameters of the screen sample images collected and sent back by the camera and compares the parameters with given indexes to draw a conclusion, the repeatability is high, the result is accurate, the efficiency is high, the characteristic non-contact detection can carry out three-dimensional data cross analysis on the images collected from multiple angles, the accuracy rate is improved, and secondary damages such as scratches and damages caused in detection can be avoided.
The utility model deeply studies the defect of the backlight foreign matter which often appears when the mobile phone screen is produced; foreign matter is shaded indicates that the cell-phone screen sneaks into the dust when pasting the board in a poor light in process of production, lights to show to a black dot when white ground colour at the cell-phone screen, but the detection of this defect can receive the interference of multiple factor, wherein mainly includes dust and screen surface mar and dirty spot, the utility model discloses design a dust sidelight device on getting rid of dust interference factor, can accurate effectual getting rid of the interference of dust to the foreign matter defect in a poor light to whether contain the defect in the accurate efficient discernment cell-phone screen of one set of detection algorithm ability to the detection of whole foreign matter defect in a poor light has been designed.
SUMMERY OF THE UTILITY MODEL
According to the technical problems, a mobile phone screen backlight foreign matter defect diagnosis method and device based on machine vision are provided. The utility model discloses mainly utilize a cell-phone screen foreign matter defect diagnostic device that is shaded based on machine vision, include: the device comprises a CCD industrial camera, a light shield, a sidelight device, a support, a mobile phone screen conveying device, a mobile phone screen fixing device, a workbench, a pressure sensor, a baffle, a stamping machine, a mobile phone screen lighting device, a host and an image acquisition card.
The bracket of the CCD industrial camera arranged on the workbench is arranged at a position which is 30cm away from the vertical shooting position of the mobile phone screen; the light shield covers the CCD industrial camera, the sidelight device and the mobile phone screen shooting part; the side light devices are positioned at two sides of the mobile phone screen transmission device, and each side is 15cm away from the center of the mobile phone screen transmission device; the mobile phone screen fixing devices are grooves in the mobile phone screen conveying device, and the distance between each mobile phone screen fixing device and each mobile phone screen conveying device is 20 cm; the pressure sensor is arranged at the shooting position of the mobile phone screen; the baffle is arranged on the workbench and above the mobile phone screen conveying device, and the mobile phone screen can be fixed during working; the mobile phone screen lightening device is positioned on the mobile phone conveying belt; the image acquisition card connects the CCD industrial camera with the host computer, so that the host computer obtains the shot mobile phone screen image; the host computer performs characteristic analysis and defect diagnosis on the acquired image; and the stamping machine marks the mobile phone screen according to the diagnosis result.
Furthermore, the mobile phone screen conveying device is provided with a groove which enables the mobile phone screen to be conveyed to the shooting position and keeps the position of the mobile phone screen right, wherein the groove is 15cm away and 3mm deep, namely the mobile phone screen fixing device.
Furthermore, the mobile phone screen lighting device is arranged on the mobile phone screen conveying device, when the CCD industrial camera obtains an image after the sidelight is turned on, the mobile phone screen lighting device starts to work, and the mobile phone screen is lighted through the Flexible Printed Circuit (FPC).
Further, the sidelight device sets up in the both sides of cell-phone screen conveyer, and every side is 15cm apart from above-mentioned cell-phone screen conveyer center, the sidelight includes: a plurality of 50W LED yellow lamps which emit parallel yellow light and can adjust angles;
the angle between the LED yellow lamp and the mobile phone screen is 10-30 degrees; when the side light device is turned on, the side light device flickers for 0.5 s.
Further, the pressure sensor is arranged at the center of the mobile phone screen shooting position, and when the mobile phone screen transmission device transmits the mobile phone screen to the mobile phone screen shooting position, the pressure sensor senses that the pressure is changed from large to small and transmits a signal to the host; when the host receives the pressure sensor signal, the mobile phone screen transmission device is controlled to stop working, the sidelight device flickers, the CCD industrial camera works, the work is automatically stopped after a white background image and a sidelight image are shot, and the mobile phone screen transmission device continues working.
Compared with the prior art, the utility model has the advantages of it is following:
a dust side light device is designed for removing dust interference factors, so that the interference of dust on the defect of the backlight foreign matter can be accurately and effectively eliminated; traditional cell-phone screen defect detecting is based on artificial detection, and artifical the detection has subjectivity, inefficiency, and the mill is with high costs, and the utility model provides a cell-phone screen foreign matter defect detecting method in a poor light based on machine vision has that degree of automation is high, the detection rate of accuracy is high, low-cost advantage, adapts to the strategic demand that china's intelligence was made.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic view of the device for diagnosing defects of foreign matters in backlight of a mobile phone screen of the present invention.
The device comprises a CCD industrial camera 1, a light shield 2, a sidelight device 3, a support 4, a mobile phone screen conveying device 5, a mobile phone screen fixing device 6, a workbench 7, a mobile phone screen shooting position 8, a pressure sensor 9, a baffle 10, a stamper 11, a mobile phone screen lighting device 12, a stamp 13, a host 14 and an image acquisition card 15.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
As shown in fig. 1, the utility model discloses a cell-phone screen foreign matter defect diagnostic device that is shaded based on machine vision who contains, include: the device comprises a CCD industrial camera 1, a light shield 2, a sidelight device 3, a support 4, a mobile phone screen conveying device 5, a mobile phone screen fixing device 6, a workbench 7, a pressure sensor 9, a baffle plate 10, a stamping machine 11, a mobile phone screen lighting device 12, a host 14 and an image acquisition card 15.
In the embodiment, the bracket of the CCD industrial camera arranged on the workbench is arranged at a position which is 30cm away from the vertical shooting position of the mobile phone screen; the light shield covers the CCD industrial camera, the sidelight device and the mobile phone screen shooting part; the side light devices are positioned at two sides of the mobile phone screen transmission device, and each side is 15cm away from the center of the mobile phone screen transmission device; the mobile phone screen fixing devices are grooves in the mobile phone screen conveying device, and the distance between each mobile phone screen fixing device and each mobile phone screen conveying device is 20 cm; the pressure sensor is arranged at the shooting position of the mobile phone screen; the baffle is arranged on the workbench and above the mobile phone screen conveying device, and the mobile phone screen can be fixed during working; the mobile phone screen lighting device is positioned on the mobile phone conveyor belt; the image acquisition card connects the CCD industrial camera with the host computer, so that the host computer obtains the shot mobile phone screen image; the host computer performs characteristic analysis and defect diagnosis on the acquired image; and the stamping machine marks the mobile phone screen according to the diagnosis result.
As a preferred embodiment, the mobile phone screen conveying device is provided with a groove which is used for conveying the mobile phone screen to the shooting position and keeping the end of the mobile phone screen position at a distance of 15cm and a depth of 3mm, namely a mobile phone screen fixing device.
In this embodiment, preferably, the mobile phone screen lighting device is disposed on the mobile phone screen conveying device, and when the CCD industrial camera captures an image of the mobile phone screen after the sidelight is turned on, the mobile phone screen lighting device starts to operate, and lights the mobile phone screen through the Flexible Printed Circuit (FPC).
In this embodiment, the sidelight device is disposed at two sides of the mobile phone screen transmission device, each side is 15cm away from the center of the mobile phone screen transmission device, and the sidelight device includes: a plurality of 50W LED yellow lamps which emit parallel yellow light and can adjust angles; the angle between the LED yellow lamp and the mobile phone screen is 10-30 degrees; when the side light device is turned on, the side light device flickers for 0.5 s.
In this embodiment, preferably, the pressure sensor is disposed at a center position of the mobile phone screen, and when the mobile phone screen transmission device transmits the mobile phone screen to the mobile phone screen shooting position, the pressure sensor senses that the pressure is changed from high to low, and transmits a signal to the host; when the host receives the pressure sensor signal, the mobile phone screen transmission device is controlled to stop working, the sidelight device flickers, the CCD industrial camera works, the work is automatically stopped after a white background image and a sidelight image are shot, and the mobile phone screen transmission device continues working.
The above embodiment numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
In the above embodiments of the present invention, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (5)
1. The utility model provides a cell-phone screen foreign matter defect diagnostic device that is shaded based on machine vision which characterized in that includes:
the device comprises a CCD industrial camera, a light shield, a sidelight device, a support, a mobile phone screen conveying device, a mobile phone screen fixing device, a workbench, a pressure sensor, a baffle, a stamping machine, a mobile phone screen lighting device, a host and an image acquisition card;
the bracket of the CCD industrial camera arranged on the workbench is arranged at a position which is 30cm away from the vertical shooting position of the mobile phone screen; the light shield covers the CCD industrial camera, the sidelight device and the mobile phone screen shooting part; the side light devices are positioned at two sides of the mobile phone screen transmission device, and each side is 15cm away from the center of the mobile phone screen transmission device; the mobile phone screen fixing devices are grooves in the mobile phone screen conveying device, and the distance between each mobile phone screen fixing device and each mobile phone screen conveying device is 20 cm; the pressure sensor is arranged at the shooting position of the mobile phone screen; the baffle is arranged on the workbench and above the mobile phone screen conveying device, and the mobile phone screen can be fixed during working; the mobile phone screen lighting device is positioned on the mobile phone conveyor belt; the image acquisition card connects the CCD industrial camera with the host computer, so that the host computer obtains the shot mobile phone screen image; the host computer performs characteristic analysis and defect diagnosis on the acquired image; and the stamping machine marks the mobile phone screen according to the diagnosis result.
2. The mobile phone screen backlight foreign matter defect diagnosis device based on machine vision according to claim 1, further characterized in that: the mobile phone screen conveying device is provided with grooves which enable the mobile phone screen to be conveyed to a shooting position and keep the position of the mobile phone screen right away, wherein the grooves are 15cm apart and 3mm deep, and the grooves are the mobile phone screen fixing device.
3. The mobile phone screen backlight foreign matter defect diagnosis device based on machine vision according to claim 1, further characterized in that: the mobile phone screen lighting device is arranged on the mobile phone screen conveying device, and when the CCD industrial camera obtains an image after the sidelight is turned on, the mobile phone screen lighting device starts to work and lights the mobile phone screen through the Flexible Printed Circuit (FPC).
4. The mobile phone screen backlight foreign matter defect diagnosis device based on machine vision according to claim 1, further characterized in that: the sidelight device set up in cell-phone screen conveyer's both sides, every side is 15cm apart from above-mentioned cell-phone screen conveyer center, the sidelight includes: a plurality of 50W LED yellow lamps which emit parallel yellow light and can adjust angles;
the angle between the LED yellow lamp and the mobile phone screen is 10-30 degrees; when the side light device is turned on, the side light device flickers for 0.5 s.
5. The mobile phone screen backlight foreign matter defect diagnosis device based on machine vision according to claim 1, further characterized in that: the pressure sensor is arranged at the center of the mobile phone screen shooting, and when the mobile phone screen transmission device transmits the mobile phone screen to the mobile phone screen shooting position, the pressure sensor senses that the pressure is changed from large to small and transmits a signal to the host; when the host receives the pressure sensor signal, the mobile phone screen transmission device is controlled to stop working, the sidelight device flickers, the CCD industrial camera works, the work is automatically stopped after a white background image and a sidelight image are shot, and the mobile phone screen transmission device continues working.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921481280.7U CN210405433U (en) | 2019-09-06 | 2019-09-06 | Mobile phone screen backlight foreign matter defect diagnosis device based on machine vision |
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| CN201921481280.7U CN210405433U (en) | 2019-09-06 | 2019-09-06 | Mobile phone screen backlight foreign matter defect diagnosis device based on machine vision |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445921A (en) * | 2019-09-06 | 2019-11-12 | 东北大学 | A kind of Mobile phone screen backlight foreign matter defect diagnostic method and device based on machine vision |
| CN111563860A (en) * | 2020-05-29 | 2020-08-21 | 长沙学院 | Mobile phone screen laminating system and method based on computer vision |
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2019
- 2019-09-06 CN CN201921481280.7U patent/CN210405433U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110445921A (en) * | 2019-09-06 | 2019-11-12 | 东北大学 | A kind of Mobile phone screen backlight foreign matter defect diagnostic method and device based on machine vision |
| CN111563860A (en) * | 2020-05-29 | 2020-08-21 | 长沙学院 | Mobile phone screen laminating system and method based on computer vision |
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