CN104375293A - Automatic LCD screen detecting cabinet based on machine vision - Google Patents
Automatic LCD screen detecting cabinet based on machine vision Download PDFInfo
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- CN104375293A CN104375293A CN201410667987.2A CN201410667987A CN104375293A CN 104375293 A CN104375293 A CN 104375293A CN 201410667987 A CN201410667987 A CN 201410667987A CN 104375293 A CN104375293 A CN 104375293A
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- lcd screen
- darkroom
- machine vision
- rotating disk
- board base
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
Abstract
The invention discloses an automatic LCD screen detecting cabinet based on machine vision. The automatic LCD screen detecting cabinet based on machine vision comprises a cabinet base, a darkroom, a multi-station rotating plate system, an automatic machine vision adjusting system and an automatic PG screen pointing system. The automatic PG screen pointing system comprises a graph signal generator, a pneumoelectric sliding ring, a power source, a computer and a plurality of signal rotating plates corresponding to LCD screen jigs in number. The automatic machine vision adjusting system comprises an industrial camera, a camera installation assembly, a perpendicular movement mechanical arm and a mechanical arm support. A light source support is further arranged on the top of the cabinet base, and a light source is arranged on the light source support and located between the industrial camera and the LCD screen jigs. The signal output end of the industrial camera is connected into the computer, and the control end of the perpendicular movement mechanical arm and the control end of the motor are connected into the computer. The automatic LCD screen detecting cabinet can eliminate the influences of external natural light and dust and impurities in the air on LCD screen defect detection, and meanwhile, the detecting cabinet has high integration degree, and the detecting efficiency of an LCD screen is greatly improved.
Description
Technical field
The present invention relates to automatic optics inspection technical field, refer to a kind of LCD screen automatic detecting machine platform based on machine vision particularly.
Background technology
Current TFT LCD is the device of main flow in display device, all be widely used in daily life, it is current unique luma, contrast, power consumption, life-span, the combination property such as health check-up and weight to be caught up with comprehensively and more than the display device of CRT, along with the intensification in LCDs market, people more and more pay close attention to LCDs industry, in order to replace the method for traditional manual detection, researchist starts to import CCD (industrial camera) detection technique, design AOI (Automatic Optic Inspection) system replaces human eye detection, but enter due to extraneous natural light the interference with dust in air impurity, CCD being detected to interference and the communication connection caused, make the false drop rate of checkout equipment on the market, loss is high, cross inspection serious, be difficult to replace human eye detection, underintegration simultaneously, low (the just single experimental study equipment of detection efficiency, can not close with product toe-in and carry out pipelining detection).
Summary of the invention
Object of the present invention is exactly to provide a kind of LCD screen automatic detecting machine platform based on machine vision, this detection board can eliminate extraneous natural light and dust in air impurity to the impact of LCD screen defects detection, the board of this detection simultaneously has higher integrated level, significantly improves the detection efficiency of LCD screen.
For realizing this object, the LCD screen automatic detecting machine platform based on machine vision designed by the present invention, it comprises board base, by front plate, backplate, the darkroom of top board and two side plate compositions, be arranged on the station dial system of board base top, being arranged on also can to the PG (PatternGenerator of LCD screen conveying test signal to be measured in station dial system, figure signal generator) automatically put screen system, be arranged on board base top also can carry out defects detection machine vision automatic adjustment system to LCD screen to be measured, be arranged on the light source providing detection to throw light in darkroom and to LCD screen to be measured, wherein, the described top of board base is fixedly connected with the bottom in darkroom, the board base be positioned at outside the front plate of described darkroom is operator's console, described station dial system comprises rotating disk, circumferentially evenly be arranged on multiple LCD screen tools for installing LCD screen to be measured at rotating disk top, be arranged on the rotary positioning apparatus that rotating disk calibration can be driven to rotate bottom rotating disk, the half of described rotating disk is positioned at darkroom, rotating disk second half be positioned at outside darkroom, the described rotating disk being positioned at darkroom is test section, the rotating disk be positioned at outside darkroom is test waiting area.
The top board in described darkroom is provided with blower fan filtering unit, multiple fan is provided with in described board base, the opening of described darkroom front plate is provided with ionic air knife, the operator's console of described board base is provided with ion blower, the air input of described blower fan filtering unit is positioned at outside darkroom, the air output terminal of blower fan filtering unit is positioned at inside darkroom, and the air input of described each fan is positioned at inside darkroom, and the air output terminal of each fan is positioned at outside darkroom.
Beneficial effect of the present invention:
The present invention is by arranging blower fan filtering unit, fan, ionic air knife and ion blower, clean environment can be provided for darkroom, effectively can stop entering and clean air being provided of dust impurity like this, greatly reduce the impact that dust impurity detects LCD screen.Above-mentioned station dial system provided by the invention can when a LCD screen detects, other LCD screen is allowed to be on the wait station of rotating disk, such efficiency that can significantly improve batch LCD screen and detect, and the PG be mated puts screen system automatically and machine vision automatic adjustment system makes automatization level of the present invention significantly improve.In addition, PG provided by the invention puts the communication mode that screen system takes pneumoelectric slip ring automatically, and communication process when ensure that LCD screen on-line checkingi is reliable and stable.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention;
Fig. 2 is the perspective view after taking off darkroom side plate in the present invention;
Fig. 3 is the structural representation of station dial system in the present invention;
Fig. 4 be in the present invention, station dial system is installed PG automatically put screen system after structured flowchart;
Fig. 5 is the structural representation of machine vision automatic adjustment system in the present invention;
Fig. 6 is LCD screen to be measured in the present invention, signal flap, figure signal generator, industrial camera, catenary motion mechanical arm, circuit block diagram between motor and computer.
Wherein, 1-board base, 2-darkroom, 2.1-opening, 3-station dial system, 3.1-rotating disk, 3.2-LCD screen tool, 3.3-motor, 3.4-speed reduction unit, 3.5-dispenser, 4-machine vision automatic adjustment system, 4.1-industrial camera, 4.2-camera installation component, 4.3-catenary motion mechanical arm, 4.4-manipulator support, 4.5-towing chain mechanism, 4.6-position-limit mechanism, 5-PG puts screen system automatically, 5.1-signal flap, 5.2-figure signal generator, 5.3-pneumoelectric slip ring, 5.4-power supply, 5.5-computer, 6-LCD screen to be measured, 7-light source bracket, 7.1-light source, 8-blower fan filtering unit, 9-fan, 10-ionic air knife, 11-ion blower, 12-problem screen holder, 13-instrument cases.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
The LCD screen automatic detecting machine platform based on machine vision as shown in figs. 1 to 6, it comprises board base 1, by front plate, backplate, the darkroom 2 of top board and two side plate compositions, be arranged on the station dial system 3 at board base 1 top, being arranged in station dial system 3 also can carry the PG of test signal automatically to put screen system 5 to LCD screen 6 to be measured, be arranged on defects detection also can be carried out in board base 1 top machine vision automatic adjustment system 4 to LCD screen 6 to be measured, to be arranged in darkroom 2 and the light source 7.1 providing detection to throw light on to LCD screen 6 to be measured, wherein, the top of described board base 1 is fixedly connected with the bottom in darkroom 2, the board base 1 be positioned at outside the front plate of described darkroom 2 is operator's console, described station dial system 3 comprises rotating disk 3.1, circumferentially evenly be arranged on multiple LCD screen tools 3.2 for installing LCD screen 6 to be measured at rotating disk 3.1 top, be arranged on the rotary positioning apparatus that rotating disk calibration can be driven to rotate bottom rotating disk 3.1, the half of described rotating disk 3.1 is positioned at darkroom 2, rotating disk 3.1 second half be positioned at outside darkroom 2, the described rotating disk 3.1 being positioned at darkroom 2 is test section, the rotating disk 3.1 be positioned at outside darkroom 2 is test waiting area.The bottom of darkroom 2 front plate is provided with opening 2.1, and this opening 2.1 is that the rotation of rotating disk 3.1 provides space, is test section inside opening 2.1, is test waiting area outside opening 2.1.
The rotary positioning apparatus of described station dial system 3 comprises and is arranged on motor 3.3 bottom rotating disk 3.1 and speed reduction unit 3.4 (for increasing Driving Torque) and dispenser 3.5, the output shaft of described motor 3.3 connects the input end of dispenser 3.5 by speed reduction unit 3.4, the output terminal of dispenser 3.5 drives rotating disk 3.1 calibration to rotate (according to the accurate calibration of station number).
In technique scheme, described PG automatically puts screen system 5 and comprises figure signal generator 5.2, pneumoelectric slip ring 5.3, power supply 5.4, computer 5.5, the multiple signal flaps 5.1 corresponding with LCD screen tool 3.2 number, above-mentioned figure signal generator 5.2 is all fixedly connected with rotating disk 3.1 with multiple signal flap 5.1, first communication ends of described each signal flap 5.1 connects the communication ends of LCD screen 6 to be measured by corresponding LCD screen tool 3.2, the second communication end of each signal flap 5.1 all accesses the first communication ends of figure signal generator 5.2, the power end of described figure signal generator 5.2 connects power supply 5.4 by pneumoelectric slip ring 5.3, the second communication end of figure signal generator 5.2 accesses computer 5.5 by pneumoelectric slip ring 5.3, the upper part of described pneumoelectric slip ring 5.3 can be rotated with rotating disk 3.1, bottom and the board base 1 of pneumoelectric slip ring 5.3 are fixed.
In technique scheme, described machine vision automatic adjustment system 4 comprises industrial camera 4.1, camera installation component 4.2, catenary motion mechanical arm 4.3, manipulator support 4.4, described manipulator support 4.4 is arranged on the top of board base 1 and is positioned at darkroom 2, the installed surface of described catenary motion mechanical arm 4.3 is arranged on manipulator support 4.4, the lifting action end of described catenary motion mechanical arm 4.3 is fixedly connected with camera installation component 4.2, mounting industrial camera 4.1 on this camera installation component 4.2, described industrial camera 4.1 is positioned at the top of LCD screen tool 3.2 and the alignment lens LCD screen tool 3.2 of industrial camera 4.1,
The signal output part access computer 5.5 of described industrial camera 4.1, the control end of catenary motion mechanical arm 4.3 also accesses computer 5.5, and the control end of motor 3.3 also accesses computer 5.5.In the present invention, computer 5.5 can obtain the photo of industrial camera 4.1, can control the action of catenary motion mechanical arm 4.3, can control the duty of motor 3.3, sends test picture by figure signal generator 5.2 to LCD screen 6 to be measured.
In technique scheme, be also fixed with light source bracket 7, light source bracket 7 arranged light source 7.1 in described darkroom 2, described light source 7.1 is between industrial camera 4.1 and LCD screen tool 3.2.Described light source 7.1 irradiates LCD screen 6 to be measured, for the feature of outstanding LCD screen 6 to be measured.Light source 7.1 can to combine use for bar-shaped LED light source, LED backlight or LED coaxial light source or above-mentioned several light source.
In technique scheme, described catenary motion mechanical arm 4.3 is provided with position-limit mechanism 4.6.For carrying out position limitation protection to catenary motion mechanical arm 4.3.
In technique scheme, figure signal generator 5.2 by signal flap 5.1 to LCD screen 6 to be measured provide LCD screen detect needed for signal, power supply and detected image, described figure signal generator 5.2 rotates with described rotating disk 3.1.Above-mentioned figure signal generator 5.2 and realize the communication connection in the situation that relatively rotates by the mode of pneumoelectric slip ring 5.3 between power supply 5.4 and computer 5.5.
In technique scheme, described industrial camera 4.1 is adjusted to the camera site of needs by catenary motion mechanical arm 4.3.
In technique scheme, it also comprises towing chain mechanism 4.5, the erecting frame of described towing chain mechanism 4.5 is fixed on manipulator support 4.4 top, the drag chain of described towing chain mechanism 4.5 is arranged on the side of camera installation component 4.2, and data line and the power lead of described industrial camera 4.1 are drawn by towing chain mechanism 4.5.
In technique scheme, the top board in described darkroom 2 is provided with blower fan filtering unit 8, multiple fan 9 is provided with in described board base 1, the opening 2.1 of described darkroom 2 front plate is provided with ionic air knife 10, the operator's console of described board base 1 is provided with ion blower 11, the air input of described blower fan filtering unit 8 is positioned at outside darkroom 2, the air output terminal of blower fan filtering unit 8 is positioned at inside darkroom 2, the air input of described each fan 9 is positioned at inside darkroom 2, and the air output terminal of each fan 9 is positioned at outside darkroom 2.Above-mentioned darkroom 2, blower fan filtering unit 8, fan 9, ionic air knife 10 are for preventing the incidence of natural light and ensureing the cleaning of internal environment.Described blower fan filtering unit 8 provides pure air at the uniform velocity downwards toward clean inside, darkroom 2, the air in darkroom 2 taken out outward by fan 9, and blower fan filtering unit 8 and fan 9 are combined the cleaning that ensure that darkroom 2 inner air.The wind that ionic air knife 10 blows out forms one air curtain, enters darkroom 2 for preventing external dust impurity.Ion blower 11 can blow the dust impurity on operating personnel and product to be checked off, is conducive to the accuracy that LCD screen detects.
In technique scheme, vertically downward, the delivery outlet of described ion blower 11 is towards the manual operation position of board base 1 operator's console for the delivery outlet of described ionic air knife 10.
In technique scheme, the front plate in described darkroom 2 is provided with problem screen holder 12.
In technique scheme, the front plate in described darkroom 2 is also provided with instrument cases 13.
In technique scheme, darkroom 2 is made up of hardware and black acrylic door, and darkroom 2 sprays sub-black, not reflective, ensure that in whole darkroom 2 and disturbs without natural light.
When the present invention works, LCD screen 6 to be measured is placed on corresponding LCD screen tool 3.2 by operating personnel on operator's console, then, computer 5.5 is controlled rotating disk 3.1 rotated by motor 3.3, speed reduction unit 3.4, dispenser 3.5, above-mentioned LCD screen tool 3.2 turns on the test section station in darkroom 2, now, screen test pattern is transferred to above-mentioned LCD screen to be measured 6 by figure signal generator 5.2 and signal flap 5.1 by computer 5.5; Now light source 7.1 is lighted, computer 5.5 controls the focal length of industrial camera 4.1 by catenary motion mechanical arm 4.3, industrial camera 4.1 is taken pictures to the LCD screen to be measured 6 on above-mentioned LCD screen tool 3.2, the image transmitting that industrial camera 4.1 is taken pictures shows to computer 5.5, and operating personnel judge the quality of LCD screen 6 to be measured with this.In above-mentioned LCD screen 6 to be measured while detection, another LCD screen 6 to be measured is in place on the LCD screen tool 3.2 on operator's console by operating personnel, detected rear rotating disk 3.1 Deng first LCD screen 6 to be measured and rotated the detection that a station can carry out second LCD screen 6 to be measured, operating personnel will detect that problematic LCD screen is placed in problem screen holder 12.
The content that this instructions is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (10)
1. the LCD screen automatic detecting machine platform based on machine vision, it comprises board base (1), by front plate, backplate, the darkroom (2) of top board and two side plate compositions, be arranged on the station dial system (3) at board base (1) top, be arranged on station dial system (3) and above also can automatically put screen system (5) to the PG of LCD screen to be measured (6) conveying test signal, be arranged on defects detection also can be carried out in board base (1) top machine vision automatic adjustment system (4) to LCD screen to be measured (6), to be arranged in darkroom (2) and the light source (7.1) providing detection to throw light on to LCD screen to be measured (6), wherein, the top of described board base (1) is fixedly connected with the bottom of darkroom (2), the board base (1) be positioned at outside described darkroom (2) front plate is operator's console, described station dial system (3) comprises rotating disk (3.1), circumferentially evenly be arranged on multiple LCD screen tools (3.2) for installing LCD screen to be measured (6) at rotating disk (3.1) top, be arranged on the rotary positioning apparatus that rotating disk (3.1) bottom can drive rotating disk calibration to rotate, the half of described rotating disk (3.1) is positioned at darkroom (2), rotating disk (3.1) second half be positioned at darkroom (2) outward, the described rotating disk (3.1) being positioned at darkroom (2) is test section, be positioned at darkroom (2) rotating disk outward (3.1) for test waiting area.
2. the LCD screen automatic detecting machine platform based on machine vision according to claim 1, it is characterized in that: described PG automatically puts screen system (5) and comprises figure signal generator (5.2), pneumoelectric slip ring (5.3), power supply (5.4), computer (5.5), the multiple signal flaps (5.1) corresponding with LCD screen tool (3.2) number, above-mentioned figure signal generator (5.2) is all fixedly connected with rotating disk (3.1) with multiple signal flap (5.1), first communication ends of described each signal flap (5.1) connects the communication ends of LCD screen to be measured (6) by corresponding LCD screen tool (3.2), the second communication end of each signal flap (5.1) all accesses the first communication ends of figure signal generator (5.2), the power end of described figure signal generator (5.2) connects power supply (5.4) by pneumoelectric slip ring (5.3), the second communication end of figure signal generator (5.2) is by pneumoelectric slip ring (5.3) access computer (5.5), the upper part of described pneumoelectric slip ring (5.3) can be rotated with rotating disk (3.1), the bottom of pneumoelectric slip ring (5.3) and board base (1) are fixed.
3. the LCD screen automatic detecting machine platform based on machine vision according to claim 2, it is characterized in that: described machine vision automatic adjustment system (4) comprises industrial camera (4.1), camera installation component (4.2), catenary motion mechanical arm (4.3), manipulator support (4.4), described manipulator support (4.4) is arranged on the top of board base (1) and is positioned at darkroom (2), the installed surface of described catenary motion mechanical arm (4.3) is arranged on manipulator support (4.4), the lifting action end of described catenary motion mechanical arm (4.3) is fixedly connected with camera installation component (4.2), the upper mounting industrial camera (4.1) of this camera installation component (4.2), described industrial camera (4.1) is positioned at the top of LCD screen tool (3.2) and the alignment lens LCD screen tool (3.2) of industrial camera (4.1),
Signal output part access computer (5.5) of described industrial camera (4.1), the control end of catenary motion mechanical arm (4.3) also accesses computer (5.5), and the control end of motor (3.3) also accesses computer (5.5).
4. the LCD screen automatic detecting machine platform based on machine vision according to claim 3, it is characterized in that: in described darkroom (2), be also fixed with light source bracket (7), light source bracket (7) is arranged light source (7.1), described light source (7.1) is positioned between industrial camera (4.1) and LCD screen tool (3.2).
5. the LCD screen automatic detecting machine platform based on machine vision according to claim 3, it is characterized in that: it also comprises towing chain mechanism (4.5), the erecting frame of described towing chain mechanism (4.5) is fixed on manipulator support (4.4) top, the drag chain of described towing chain mechanism (4.5) is arranged on the side of camera installation component (4.2), and the data line of described industrial camera (4.1) and power lead are drawn by towing chain mechanism (4.5).
6. the LCD screen automatic detecting machine platform based on machine vision according to claim 3, it is characterized in that: the bottom of described darkroom (2) front plate is provided with opening (2.1), this opening (2.1) provides space for the rotation of rotating disk (3.1), the top board in described darkroom (2) is provided with blower fan filtering unit (8), multiple fan (9) is provided with in described board base (1), the opening (2.1) of described darkroom (2) front plate is provided with ionic air knife (10), the operator's console of described board base (1) is provided with ion blower (11), the air input of described blower fan filtering unit (8) is positioned at outside, darkroom (2), the air output terminal of blower fan filtering unit (8) is positioned at inner side, darkroom (2), the air input of described each fan (9) is positioned at inner side, darkroom (2), the air output terminal of each fan (9) is positioned at outside, darkroom (2).
7. the LCD screen automatic detecting machine platform based on machine vision according to claim 6, it is characterized in that: vertically downward, the delivery outlet of described ion blower (11) is towards the manual operation position of board base (1) operator's console for the delivery outlet of described ionic air knife (10).
8. the LCD screen automatic detecting machine platform based on machine vision according to claim 1, it is characterized in that: the front plate of described darkroom (2) is provided with problem screen holder (12), the front plate of described darkroom (2) is also provided with instrument cases (13).
9. the LCD screen automatic detecting machine platform based on machine vision according to claim 3, is characterized in that: described catenary motion mechanical arm (4.3) is provided with position-limit mechanism (4.6).
10. the LCD screen automatic detecting machine platform based on machine vision according to claim 1, it is characterized in that: the rotary positioning apparatus of described station dial system (3) comprises the motor (3.3) and speed reduction unit (3.4) and dispenser (3.5) that are arranged on rotating disk (3.1) bottom, the output shaft of described motor (3.3) connects the input end of dispenser (3.5) by speed reduction unit (3.4), the output terminal of dispenser (3.5) drives rotating disk (3.1) calibration to rotate.
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| CN201410667987.2A CN104375293B (en) | 2014-11-20 | 2014-11-20 | Automatic LCD screen detecting cabinet based on machine vision |
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| CN201410667987.2A CN104375293B (en) | 2014-11-20 | 2014-11-20 | Automatic LCD screen detecting cabinet based on machine vision |
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| CN104375293B CN104375293B (en) | 2017-05-17 |
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Address after: 430070 Hubei City, Hongshan Province, South Lake Road, No. 53, Hongshan Venture Center, building on the 4 floor, No. Patentee after: Wuhan fine test electronics group Limited by Share Ltd Address before: 430070 Hubei City, Hongshan Province, South Lake Road, No. 53, Hongshan Venture Center, building on the 4 floor, No. Patentee before: Wuhan Jingce Electronic Technology Co., Ltd. |