CN106053484A - Testing apparatus and method for foreign matters on surface of liquid crystal glass - Google Patents

Testing apparatus and method for foreign matters on surface of liquid crystal glass Download PDF

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Publication number
CN106053484A
CN106053484A CN201610629073.6A CN201610629073A CN106053484A CN 106053484 A CN106053484 A CN 106053484A CN 201610629073 A CN201610629073 A CN 201610629073A CN 106053484 A CN106053484 A CN 106053484A
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CN
China
Prior art keywords
liquid
crystalline glasses
image
image collecting
foreign
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610629073.6A
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Chinese (zh)
Inventor
侯先斌
陈佳乐
张伟
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CHANGZHOU CHIWANG INTELLIGENT DETECTION TECHNOLOGY Co Ltd
Original Assignee
CHANGZHOU CHIWANG INTELLIGENT DETECTION TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by CHANGZHOU CHIWANG INTELLIGENT DETECTION TECHNOLOGY Co Ltd filed Critical CHANGZHOU CHIWANG INTELLIGENT DETECTION TECHNOLOGY Co Ltd
Priority to CN201610629073.6A priority Critical patent/CN106053484A/en
Publication of CN106053484A publication Critical patent/CN106053484A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/94Investigating contamination, e.g. dust

Abstract

The invention provides a testing apparatus for foreign matters on the surface of liquid crystal glass. The testing apparatus comprises a frame, image acquisition devices for collecting a surface image of liquid crystal glass, a photoelectric sensor for detecting a position signal of the liquid crystal glass, and light sources for lightening the surface of the liquid crystal glass, wherein the image acquisition devices, the photoelectric sensor and the light sources are installed on the frame, and an industrial personal computer. The frame is arranged on a streamline with the liquid crystal glass loaded; the image acquisition devices are located at the upper part of the frame; the photoelectric sensor is corresponding to the image acquisition devices and is located at the lower part of the frame; the light sources are located at the side parts of the support; and the industrial personal computer is connected to the image acquisition devices and the photoelectric sensor. The photoelectric sensor detects the process that liquid crystal glass is moved in and out of an acquisition area of the image acquisition devices, the image acquisition devices collect a plurality of images which can display a full view of liquid crystal glass after being combined, and the industrial personal computer can judge whether foreign matters exist on the whole surface of the liquid crystal glass through the plurality of images. The invention further provides a testing method based on the testing apparatus.

Description

The detection equipment of a kind of liquid-crystalline glasses Superficial Foreign Body and detection method thereof
Technical field
The present invention relates to LCD liquid crystal display screen detection technique, especially, relate to the detection equipment of a kind of liquid-crystalline glasses Superficial Foreign Body And detection method.
Background technology
LCD liquid crystal display screen includes liquid-crystalline glasses and is close to the polaroid on liquid-crystalline glasses surface.In order to improve LCD liquid crystal display screen Imaging results, be partially sticked standby to liquid-crystalline glasses patch polaroid before, need to ensure liquid-crystalline glasses surface free from dust, fiber, residual The foreign body absorption such as glue, it is therefore desirable to have foreign to detect on liquid-crystalline glasses surface.Conventional detection mode mainly has following Two kinds: 1) by eye-observation and identification, which carries out causing visual fatigue for a long time, and identification declines, impact detection Efficiency and waste manpower.2) by camera, the liquid-crystalline glasses rested under camera is taken pictures, and then entered by detection program Row detection, which is merely capable of realizing detecting the single liquid-crystalline glasses that size is less, it is impossible to complete larger-size The detection of liquid-crystalline glasses.
Summary of the invention
The technical problem to be solved is: in order to overcome the above-mentioned problems in the prior art, now provides one Plant detection equipment and the detection method thereof of liquid-crystalline glasses Superficial Foreign Body, it is intended to realize the inspection for larger-size liquid-crystalline glasses Survey.
The technical scheme that the present invention solves its technical problem to be taken is: the detection of a kind of liquid-crystalline glasses Superficial Foreign Body sets Standby, including support, be separately mounted on support for gathering the image collecting device of liquid-crystalline glasses surface image, for detecting The photoelectric sensor of liquid-crystalline glasses position signalling and for illuminating the light source on liquid-crystalline glasses surface, and industrial computer, described support Being set up on the streamline being loaded with liquid-crystalline glasses, described image collector is setting in the top of support, described photoelectric sensor pair Answering image collector setting in the bottom of support, described light source is positioned at the sidepiece of support, described industrial computer respectively with image acquisition Device and photoelectric sensor connect, and photoelectric sensor detects that liquid-crystalline glasses is by entering into removal image acquisition device region During, the image of liquid-crystalline glasses overall picture can be shown after multiple combinations of image acquisition device, industrial computer can pass through Multiple images judge whether whole liquid-crystalline glasses surface exists foreign body.
Further, described industrial computer is located at the side of support, and industrial computer includes control module and computing module, described control Molding block is for receiving the signal of photoelectric sensor and controlling the method for operation of image collecting device, and described computing module is used for connecing Receive, analyze the image of image acquisition device and judge whether liquid-crystalline glasses surface exists foreign body.
Further, described image collecting device includes at least one camera, and each camera is respectively provided with a shooting Head, described photographic head is for shooting the image of liquid-crystalline glasses.
Further, described light source has two, and is symmetrically positioned in the both sides of support.
Further, described photoelectric sensor is reflective photoelectric sensor.
Further, described control module also with standby connection that be partially sticked, control module can control partially to be sticked for the most right Liquid-crystalline glasses carries out polaroid laminating operation.
The detection method of a kind of detection equipment based on aforesaid a kind of liquid-crystalline glasses Superficial Foreign Body, mainly includes following step Rapid:
S100: some bright light source, the liquid-crystalline glasses that streamline is loaded with draws near near the acquisition zone of image collecting device Territory.
S200: photoelectric sensor detects that liquid-crystalline glasses is by the process entering into removal image acquisition device region In, control module can show the image of liquid-crystalline glasses overall picture after controlling multiple combinations of image acquisition device.
Multiple images received are analyzed by S300: computing module, it is judged that whether liquid-crystalline glasses surface exists foreign body.
Further, in described step S200, liquid-crystalline glasses has just enter into the moment in image acquisition device region, image Harvester starts to gather image, and the moment in liquid-crystalline glasses removal image acquisition device region, image collecting device stops Gather image.
Further, in described step S200, the frequency of described image acquisition device image can be according to liquid crystal glass The translational speed of glass and change.
Further, described computing module is judged when liquid-crystalline glasses surface exists foreign body, and described control module controls partially Be sticked standby stopping polaroid laminating operation.
The invention has the beneficial effects as follows: the detection equipment of a kind of liquid-crystalline glasses Superficial Foreign Body of the present invention, during use, by scheming Can show the image of liquid-crystalline glasses overall picture after gathering multiple combinations as harvester, industrial computer can be by analyzing multiple images Thus judge whether whole liquid-crystalline glasses surface exists foreign body.The detection equipment of the present invention, it is achieved that to larger-size liquid crystal The detection of glass, automaticity is high simultaneously, it is to avoid the defect of eye recognition, saves manpower, simple in construction, detection efficiency High.
Accompanying drawing explanation
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the detection equipment of the liquid-crystalline glasses Superficial Foreign Body of the present invention;(omission industrial computer)
Fig. 2 is the control structure block diagram of the detection equipment shown in Fig. 1;
Fig. 3 is the flow chart of detection method based on the detection equipment shown in Fig. 1.
In figure: 1, liquid-crystalline glasses, 2, streamline, 3, partially be sticked standby, 10, support, 20, image collecting device, 21, camera, 211, photographic head, 30, photoelectric sensor, 40, light source, 50, industrial computer, 51, control module, 52, computing module.
Detailed description of the invention
Presently in connection with accompanying drawing, the present invention is described in detail.This figure is the schematic diagram simplified, and illustrates the most in a schematic way The basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
Refer to Fig. 1, Fig. 2, the detection equipment of a kind of liquid-crystalline glasses Superficial Foreign Body of the present invention, it is used for detecting liquid-crystalline glasses Whether the surface of 1 exists the foreign bodies such as dust, fiber, glass chip, cull.This detection equipment includes support 10, is separately mounted to Image collecting device 20 on support 10, photoelectric sensor 30, light source 40, and industrial computer 50.
It should be noted that the detection equipment of the present invention and streamline 2 and be partially sticked standby 3 with the use of.Concrete, Support 10 is erected on streamline 2, and liquid-crystalline glasses 1 is placed on streamline 2, and liquid-crystalline glasses 1 moves with streamline 2, is partially sticked Standby 3 sides being located at streamline 2.When liquid-crystalline glasses 1 passes through the detection equipment of the present invention, partially it is sticked and surface can be as good as 3 The liquid-crystalline glasses 1 of thing carries out polaroid laminating.
Image collecting device 20 is positioned at the top of support 10, and is in the top of streamline 2, is used for gathering streamline 2 The image on liquid-crystalline glasses 1 surface.
Image collecting device 20 includes at least one camera 21, and each camera 21 is respectively provided with a photographic head 211, takes the photograph As 211 for shooting the image of liquid-crystalline glasses 1.
In embodiments of the present invention, image collecting device 20 includes two cameras 21, certainty, photographic head 211 Quantity is two.Line between the two photographic head 211 is perpendicular to the moving direction of liquid-crystalline glasses 1, thus, expands image The pickup area of harvester 20, it is simple to non-blind area gathers image.
It is to be appreciated that in other implementations, camera 21 can be one, it is also possible to is three, four, even More.
Photoelectric sensor 30 correspondence image harvester 20 is positioned at the bottom of support 10, and is in the lower section of streamline 2, when Liquid-crystalline glasses 1 on streamline 2 move to image collecting device 20 can pickup area time, photoelectric sensor 30 just can detect To this position signalling.
In embodiments of the present invention, photoelectric sensor 30 is reflective photoelectric sensor, this type sensor sensing away from From greatly, and can work in the environment of dust is more serious.
Light source 40 is positioned at the sidepiece of support 10, for illuminating surface to be detected on liquid-crystalline glasses 1.If liquid-crystalline glasses 1 Surface on there is foreign body, foreign body can occur diffuse-reflectance under light conditions, and then projects on photographic head 211, and foreign body is being taken the photograph As will appear as white bright spot on 211 image photographed.
Light source 40 sends the parallel rays of white, and the quantity of light source 40 is two, and is symmetrically positioned in the both sides of support 10, Add illuminated area and intensity of illumination.
Industrial computer 50 is located at the side of support 10, and industrial computer 50 includes control module 51 and computing module 52, control module 51 for receiving the signal of photoelectric sensor 30 and controlling the method for operation of image collecting device 20, and computing module 52 is used for connecing Receive, analyze the image that image collecting device 20 gathers and also judge whether liquid-crystalline glasses 1 surface exists foreign body, control module 51 also with Be sticked standby 3 connections partially, and control module 51 can control partially to be sticked whether liquid-crystalline glasses 1 is carried out polaroid laminating for 3.
Please refer to Fig. 3, the detection method of the detection equipment of liquid-crystalline glasses Superficial Foreign Body based on the present invention is described, its Mainly comprise the steps that
S100: some bright light source 40, the liquid-crystalline glasses 1 that streamline 2 is loaded with draws near near image collecting device 20 Pickup area.
S200: when the liquid-crystalline glasses 1 on streamline 2 has just enter into the moment of image collecting device 20 pickup area, photoelectric transfer Sensor 30 detects this position signalling, and this position signalling passes to control module 51, and control module 51 just controls image Harvester 20 starts to gather multiple images according to certain frequency, until liquid-crystalline glasses 1 removes the collection of image collecting device 20 Region, photoelectric sensor 30 can't detect the position of liquid-crystalline glasses 1, and control module 51 just controls image collecting device 20 and stops adopting Collection image.
It should be noted that can completely show the overall picture of liquid-crystalline glasses 1 after multiple images combination collected.
This step need not artificial interference, and automaticity is high.Meanwhile, image collecting device 20 is only when its pickup area Just work when inside there is liquid-crystalline glasses 1, it is to avoid unnecessary image acquisition, designs more hommization.
Multiple images collected from image collecting device 20 are analyzed by S300: computing module 52 one by one, it is judged that Whether liquid-crystalline glasses 1 surface exists foreign body.
When computing module 52 judges that liquid-crystalline glasses 1 surface exists foreign body, control module 5 controls partially to be sticked and does not enters for 3 The laminating operation of row polaroid.Otherwise, when computing module 52 judges that liquid-crystalline glasses 1 surface does not exists foreign body, control module 5 is controlled System is partially sticked and carries out polaroid laminating operation for 3.
Further, image collecting device 20 gathers the frequency of image and can change according to the translational speed of liquid-crystalline glasses 1 Becoming, concrete, when liquid-crystalline glasses 1 translational speed on streamline 2 is very fast, the frequency gathering image of image collecting device 20 is also Corresponding very fast;When liquid-crystalline glasses 1 translational speed on streamline 2 is relatively slow, the frequency gathering image of image collecting device 20 Rate is the most relatively slow.Thereby it is ensured that can show that whole liquid after multiple images combination of collecting of image collecting device 20 The overall picture of crystal glass 1, it is to avoid blind area occurs in the image of collection, impacts whole liquid-crystalline glasses 1 Surface testing.
The detection equipment of the liquid-crystalline glasses Superficial Foreign Body of the present invention, during use, is gathered multiple groups by image collecting device 20 Can show the image of liquid-crystalline glasses 1 overall picture after conjunction, industrial computer 50 can judge whole liquid crystal by analyzing multiple images Whether glass 1 surface exists foreign body.The detection equipment of the present invention, it is achieved that the detection to larger-size liquid-crystalline glasses 1, simultaneously Automaticity is high, it is to avoid the defect of eye recognition, saves manpower, simple in construction, and detection efficiency is high.
Present invention also offers a kind of detection method based on above-mentioned detection equipment.
With the above-mentioned desirable embodiment according to the present invention for enlightenment, by above-mentioned description, relevant staff Various change and amendment can be carried out completely without departing from the scope of the present invention.The technical scope of this invention is not The content being confined in description, it is necessary to determine its technical scope according to right.

Claims (10)

1. the detection equipment of a liquid-crystalline glasses Superficial Foreign Body, it is characterised in that: include support (10), be separately mounted to support (10) being used on gathers the image collecting device (20) of liquid-crystalline glasses (1) surface image, is used for detecting liquid-crystalline glasses (1) position The photoelectric sensor (30) of signal and be used for illuminating the light source (40) on liquid-crystalline glasses (1) surface, and industrial computer (50), described Frame (10) is set up on the streamline (2) being loaded with liquid-crystalline glasses (1), and described image collecting device (20) is positioned at the upper of support (10) Portion, described photoelectric sensor (30) correspondence image harvester (20) is positioned at the bottom of support (10), and described light source (40) is positioned at The sidepiece of support (10), described industrial computer (50) is connected with image collecting device (20) and photoelectric sensor (30) respectively, photoelectricity During sensor (30) detects that liquid-crystalline glasses (1) is by entering into removal image collecting device (20) pickup area, image Harvester (20) can show the image of liquid-crystalline glasses (1) overall picture after gathering multiple combinations, industrial computer (50) can be by many Open image and judge whether whole liquid-crystalline glasses (1) surface exists foreign body.
The detection equipment of a kind of liquid-crystalline glasses Superficial Foreign Body the most as claimed in claim 1, it is characterised in that: described industrial computer (50) being located at the side of support (10), industrial computer (50) includes control module (51) and computing module (52), described control module (51) it is used for receiving the signal of photoelectric sensor (30) and controlling the method for operation of image collecting device (20), described computing module (52) it is used for receiving, analyzes image that image collecting device (20) gathers and judge whether liquid-crystalline glasses (1) surface exists foreign body.
The detection equipment of a kind of liquid-crystalline glasses Superficial Foreign Body the most as claimed in claim 1, it is characterised in that: described image acquisition Device (20) includes that at least one camera (21), each camera (21) are respectively provided with a photographic head (211), described photographic head (211) it is used for shooting the image of liquid-crystalline glasses (1).
The detection equipment of a kind of liquid-crystalline glasses Superficial Foreign Body the most as claimed in claim 1, it is characterised in that: described light source (40) There are two, and are symmetrically positioned in the both sides of support (10).
The detection equipment of a kind of liquid-crystalline glasses Superficial Foreign Body the most as claimed in claim 1, it is characterised in that: described photoelectric sensing Device (30) is reflective photoelectric sensor.
The detection equipment of a kind of liquid-crystalline glasses Superficial Foreign Body the most as claimed in claim 2, it is characterised in that: described control module (51) being also connected be partially sticked standby (3), whether control module (51) can control partially to be sticked and carry out liquid-crystalline glasses (1) for (3) Polaroid laminating operation.
7. the detection of a detection equipment based on a kind of liquid-crystalline glasses Superficial Foreign Body as according to any one of claim 1-6 Method, mainly comprises the steps that
S100: some bright light source (40), the liquid-crystalline glasses (1) that streamline (2) is loaded with draws near near image collecting device (20) pickup area;
S200: photoelectric sensor (30) detects that liquid-crystalline glasses (1) is by entering into removal image collecting device (20) pickup area During, control module (51) controls to show that liquid-crystalline glasses (1) is complete after image collecting device (20) gathers multiple combinations The image of looks;
Multiple images received are analyzed by S300: computing module (52), it is judged that whether liquid-crystalline glasses (1) surface exists different Thing.
The detection method of a kind of liquid-crystalline glasses Superficial Foreign Body the most as claimed in claim 7, it is characterised in that: described step S200 In, liquid-crystalline glasses (1) has just enter into the moment of image collecting device (20) pickup area, and image collecting device (20) starts collection figure Picture, the moment of liquid-crystalline glasses (1) removal image collecting device (20) pickup area, image collecting device (20) stops gathering figure Picture.
The detection method of a kind of liquid-crystalline glasses Superficial Foreign Body the most as claimed in claim 7, it is characterised in that: described step S200 In, described image collecting device (20) gathers the frequency of image and can change according to the translational speed of liquid-crystalline glasses.
The detection method of a kind of liquid-crystalline glasses Superficial Foreign Body the most as claimed in claim 7, it is characterised in that: described computing mould Block (52) is judged when liquid-crystalline glasses (1) surface exists foreign body, and described control module (5) controls standby (3) stopping polarisation that is partially sticked Sheet laminating operation.
CN201610629073.6A 2016-08-03 2016-08-03 Testing apparatus and method for foreign matters on surface of liquid crystal glass Pending CN106053484A (en)

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CN108088853A (en) * 2016-11-23 2018-05-29 阜宁协鑫光伏科技有限公司 A kind of silicon chip granule dust judges stria prioritization scheme by accident

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