CN111077683A - Intelligent device and detection method for rapidly and automatically testing haze consistency of transparent liquid crystal display in batch - Google Patents
Intelligent device and detection method for rapidly and automatically testing haze consistency of transparent liquid crystal display in batch Download PDFInfo
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- CN111077683A CN111077683A CN201911403176.0A CN201911403176A CN111077683A CN 111077683 A CN111077683 A CN 111077683A CN 201911403176 A CN201911403176 A CN 201911403176A CN 111077683 A CN111077683 A CN 111077683A
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- G—PHYSICS
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- 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
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- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
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Abstract
The invention provides intelligent equipment and a detection method for quickly and automatically testing haze consistency of transparent liquid crystal screens in batches, and the intelligent equipment comprises a darkroom, wherein a production line is arranged in the darkroom, a light-emitting placing mould is arranged on the production line, the transparent liquid crystal screens to be tested are placed on the light-emitting placing mould and are driven by the production line to move, a testing camera is arranged on one side of the production line, a parallel light source array is arranged on the other side of the production line, a transparent liquid crystal screen translation device to be tested is arranged between the testing camera and the parallel light source array, the transparent liquid crystal screens to be tested move to a position between the testing camera and the parallel light source array through the transparent liquid crystal screen translation. When the transparent liquid crystal display is produced, the parallel light of the transparent liquid crystal display is tested to penetrate through the back scattering effect, the advantages of rapidness, automation and cheapness are achieved, the assembly line can be rapidly and completely detected, the detection efficiency is improved, the detection precision is guaranteed, delicate detection steps are provided, and the detection accuracy is guaranteed.
Description
Technical Field
The invention relates to the field of transparent liquid crystal screen production, in particular to intelligent equipment and a detection method for quickly and automatically testing the haze consistency of transparent liquid crystal screens in batches.
Background
In 12 months in 2012, at the IEC/TC110 working group conference held in kyoto, japan, a representative of china proposed to establish an international standard of "transparent liquid crystal display optical test method", and through discussion in two years, in 11 months in 2014, the representative proposed to apply a new working project by working group voting at the IEC/TC110 working group conference held in tokyo, japan agreed to be formally proposed by the national committee of china. The proposal plays an important role in perfecting the international standard system of transparent display and promoting the development of the transparent display industry in China. In the proposals, haze refers to the appearance of cloudiness or cloudiness in the interior or surface of a material due to light diffusion, and is an important parameter for the transparency characteristics of a transparent or translucent material, and is generally expressed as a percentage of the ratio of the amount of diffused light to the amount of light transmitted through the material. In the proposal, an integrating sphere is built to test the haze of the transparent display screen, an instrument device is preheated before the test, the measurement is completed in as short a time as possible, and the influence of slow drift generated by the light source luminescence and the detector system sensitivity along with the change of external conditions on the measurement result is reduced to the minimum. The method in the proposal is rigorous and reliable theoretically, but has obvious defects, high requirement on environment, extremely low speed and no possibility of being used for on-line detection of semi-finished products of products, and in reality, the haze meter is very expensive and can move many tens of thousands of yuan.
On the production line, the requirement of on-line detection is high speed, and the characteristic that the on-line detection can be utilized is that the calculation is avoided too much through comparison before and after actually. If there is a section smart machine, can be based on this kind of characteristics, then can realize quick, automatic, the parallel light of batch test transparent LCD screen and pierce through the back scattering effect, price also can greatly reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide intelligent equipment and a detection method for quickly and automatically testing the haze consistency of a transparent liquid crystal screen in batches.
The invention provides intelligent equipment for quickly and automatically testing haze consistency of transparent liquid crystal screens in batches, which comprises a darkroom, wherein a production line is arranged in the darkroom, a light-emitting placing mould is arranged on the production line, a to-be-tested transparent liquid crystal screen is placed on the light-emitting placing mould and is driven by the production line to move, a testing camera is arranged on one side of the production line, a parallel light source array is arranged on the other side of the production line, a to-be-tested transparent liquid crystal screen translation device is arranged between the testing camera and the parallel light source array, the to-be-tested transparent liquid crystal screen is moved to a position between the testing camera and the parallel light source array through the to-.
The further improvement lies in that: the transparent liquid crystal display translation device to be tested comprises a positioning camera, a mechanical arm, an air pump and a pneumatic actuator, wherein the positioning camera is arranged beside the mechanical arm, the pneumatic actuator is arranged at the tail end of the mechanical arm and used for clamping the transparent liquid crystal display to be tested, and the air pump provides power for the pneumatic actuator.
The further improvement lies in that: and an acousto-optic prompt system is arranged beside the test camera, and the acousto-optic prompt system is used for alarming the operation condition and abnormal condition of an operator.
The further improvement lies in that: and the acousto-optic prompt system is provided with an emergency stop switch for emergently stopping the whole system.
The darkroom is used for placing parts such as a production line, a computer, a label, a parallel light source array, a luminous placing mould, a transparent liquid crystal screen to be tested, a transparent liquid crystal screen moving device to be tested, a testing camera, an acousto-optic prompting system, an emergency button and the like, and is used for isolating the influence of external light on testing.
The assembly line is used for hanging the transparent liquid crystal screen to be tested by using the clamp, then moving to a specified position under the control of a computer, namely stopping between the background liquid crystal screen and the testing camera, and waiting for detection. The computer is used for controlling the assembly line to carry the transparent liquid crystal screen to be tested to move to a specified position; the label acquisition module is used for acquiring a label acquired by the test camera; the device is used for controlling the to-be-tested transparent liquid crystal screen moving device to carry and move the to-be-tested transparent liquid crystal screen; the method is used for obtaining the effect of the transparent liquid crystal display by using the test camera. The label is used for being attached to the transparent liquid crystal screen to be tested by an operator, being collected and identified by the test camera and being used for distinguishing the serial number of the liquid crystal screen.
The parallel light source array is used for generating a plurality of groups of parallel point light sources, the parallel point light sources can be atomized after passing through the transparent liquid crystal screen to be detected, one part of the parallel point light sources is scattered, one part of the parallel point light sources continues to move along the original optical path, and the parallel point light sources are changed into cone light with the original point of the parallel light reaching the transparent liquid crystal screen to be detected as the original point. The stronger the haze, the lower the brightness of such cone light. The weaker the haze, the higher the brightness of this cone light. Therefore, under the condition that the intensity of the parallel light source is not changed, the intensity change of the haze at the point of the transparent liquid crystal screen to be detected can be known only by detecting the intensity of the cone light. The luminous mould of placing is the rectangle box of the transparent LCD screen customization of equidimension not, and the bottom is the sponge, and four angles are luminous with emitting diode to its position can be shot in the darkroom to the location camera.
The transparent liquid crystal screen to be tested is placed in the light-emitting placing mould in batches, and the transparent liquid crystal screen to be tested is placed on a production line at intervals of a fixed distance together with the light-emitting placing mould.
The positioning camera is used for being placed on a rod beside the mechanical arm and used for shooting light rays of light emitting diodes at four corners of the light emitting placement die and sending the light rays to a computer, so that the light emitting placement die is positioned. Then the computer-driven mechanical arm can use a pneumatic actuator to align the transparent liquid crystal screen to be detected for grabbing.
The mechanical arm is used for absorbing the transparent liquid crystal screen to be detected from the light-emitting placing die under the control of a computer, carrying the transparent liquid crystal screen to be detected to an appointed detection position and placing the transparent liquid crystal screen to be detected in the light-emitting placing die.
The air pump is used for generating pneumatic suction force, so that the pneumatic actuator on the mechanical arm can firmly suck the transparent liquid crystal screen to be detected without damaging the transparent liquid crystal screen.
The pneumatic actuator is a motion terminal fixed on the mechanical arm, and after the mechanical arm moves to a specified position, the pressure of a sucker on the pneumatic actuator is opened, so that the transparent liquid crystal screen to be detected is firmly sucked without being damaged. After the mechanical arm moves to the designated position, when the pressure of the sucker on the pneumatic actuator is released, the transparent liquid crystal screen to be detected can be released.
The test camera is used for shooting the patterns mixed by the parallel light source array and the transparent liquid crystal screen, and sending the patterns to the computer for analysis.
The invention also provides a detection method for rapidly and automatically testing the haze consistency of the transparent liquid crystal display in batches, which comprises the following steps:
step 1: preprocessing, defining a parameter r: after parallel light passes through a transparent liquid crystal screen to be tested, formed conical light irradiates a lens of a testing camera, the position of a central point is found on the formed image, then a circle-like boundary of a point with the brightness of 90% of the central point is found outwards from the central point, and then the average radius r of the boundary is calculated;
step 2: the computer controls the assembly line to travel for a fixed distance, and at the moment, the new transparent liquid crystal screen to be tested and the corresponding light-emitting placement mold thereof appear in the visual field of the positioning camera;
and step 3: engineering use, namely setting the theoretical haze of the batch of transparent liquid crystal screens to be lower than Dt, grabbing a transparent liquid crystal screen to be measured from a light-emitting placing mould on a production line by using a mechanical arm, vertically placing the transparent liquid crystal screen to a specified position, and measuring by using a parallel light source array if a central point (x) existsn,yn) Brightness, i.e. not 255 consecutive 3 pixels, indicates that the haze is already large, the deviation is too large, no further measurement is necessary, and if present, the D (x) of the center point is calculatedi,yi)；
And 4, step 4: counting the sum of each point of the actual parallel light source array:
wherein n is the total number of parallel light sources of the array;
and 5: if D istt> (1+ t) n Dt or the presence of a point D (x)i,yi)＞(1+t)*DtIf so, the quality of the transparent liquid crystal screen is indicated to be in problem, and an alarm is sent out; if all are qualified, go to step 6, note down each D (x)i,yi) And a corresponding markSigning;
step 6: storing data, enabling the result to correspond to the label, facilitating history calling for further analysis, placing the qualified transparent liquid crystal screen into a corresponding light-emitting placing mould, and entering the step 2 if the batch detection task is not finished; and if the data is finished, saving the data of the whole batch, and finishing the work.
The further improvement lies in that: the process of calculating r in step 1 is to calculate the barycenter Pz of all 90% of the points (set P) by using a barycenter method, then calculate the distances from all the points P to the Pz, then add and average to obtain r.
The invention has the beneficial effects that: when the transparent liquid crystal display is produced, the parallel light of the transparent liquid crystal display is tested to penetrate through the back scattering effect, the advantages of rapidness, automation and cheapness are achieved, the assembly line can be rapidly and completely detected, the detection efficiency is improved, the detection precision is guaranteed, delicate detection steps are provided, and the detection accuracy is guaranteed.
Drawings
Fig. 1 is a mechanical structure diagram of the present invention.
FIG. 2 is a schematic diagram showing the relationship between the parallel point light source, the transparent liquid crystal panel to be tested, and the testing camera according to the present invention.
Fig. 3 is a diagram of a 4 x3 collimated light source array embodiment of the present invention.
FIG. 4 is a diagram of a case of loading a transparent LCD to be tested on the light emitting placement mold of the present invention.
Fig. 5 is a schematic diagram of the circuit structure of the present invention.
FIG. 6 is an algorithm flow diagram of the present invention.
Wherein: the method comprises the following steps of 1-darkroom, 2-assembly line, 3-luminous placing mold, 4-transparent liquid crystal screen to be tested, 5-testing camera, 6-parallel light source array, 7-computer, 8-positioning camera, 9-mechanical arm, 10-air pump, 11-pneumatic actuator and 12-acousto-optic prompt system.
Detailed Description
In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention. This embodiment provides an intelligent equipment of quick automatic transparent LCD screen haze uniformity of testing in batches, including darkroom 1, be provided with assembly line 2 in the darkroom 1, be provided with luminous mould 3 of placing on assembly line 2, the transparent LCD screen 4 that awaits measuring is placed luminous mould 3 of placing and is moved through the drive of assembly line 2, 2 one sides of assembly line are provided with test camera 5, and 2 opposite sides of assembly line are provided with parallel light source array 6, be provided with the transparent LCD screen translation device that awaits measuring between test camera 5 and the parallel light source array 6, the transparent LCD screen 4 that awaits measuring removes to between test camera 5 and the parallel light source array 6 through the transparent LCD screen translation device that awaits measuring, the other computer 7 that is provided with of test camera 5.
The further improvement lies in that: the transparent liquid crystal display translation device to be tested comprises a positioning camera 8, a mechanical arm 9, an air pump 10 and a pneumatic actuator 11, wherein the positioning camera 8 is arranged beside the mechanical arm 9, the pneumatic actuator 11 is arranged at the tail end of the mechanical arm 9 and used for clamping the transparent liquid crystal display 4 to be tested, and the air pump 10 provides power for the pneumatic actuator 11.
The further improvement lies in that: an acousto-optic prompt system 12 is arranged beside the test camera 5, and the acousto-optic prompt system 12 is used for alarming the operation condition and abnormal condition of an operator.
The further improvement lies in that: the sound and light prompt system 12 is provided with an emergency stop switch for emergency stop of the whole system.
The darkroom 1 is used for placing parts such as a production line 2, a computer 7, a label, a parallel light source array 6, a luminous placing mould 3, a transparent liquid crystal screen 4 to be tested, a transparent liquid crystal screen moving device to be tested, a testing camera 5, an acousto-optic prompt system 12 and an emergency button, and is used for isolating the influence of external light on testing. In this embodiment, the darkroom is self-built, and the darkroom which is built by the aluminum profile and is 8 meters long, 6 meters wide and 3 meters high is used.
The assembly line 2 is used for hanging a transparent liquid crystal display 4 to be detected by a clamp, and then moving to a specified position under the control of a computer 7, namely, between a background liquid crystal display and a test camera 5, stopping and waiting for detection. In this embodiment, the assembly line is driven by a motor 1 meter wide and 10 meters long, 8 meters long are in a darkroom, 1 meter is at the inlet, and 1 meter is at the outlet.
The computer 7 is used for controlling the assembly line 2 to carry the transparent liquid crystal screen 4 to be tested to move to a specified position; for obtaining the labels acquired by the test camera 5; the device is used for controlling the transparent liquid crystal screen moving device to be tested to carry and move the transparent liquid crystal screen 4 to be tested; for obtaining the effect of the transparent liquid crystal display using the test camera 5. In this embodiment, an X3850 server associated with a GPU is used. The label is used for being pasted on transparent LCD screen 4 that awaits measuring by operating personnel, is gathered, discerned by test camera 5 for distinguish the serial number of LCD screen, and the Han dynasty seal N41 heat-sensitive one-dimensional code printer that adopts in this embodiment.
The parallel light source array 6 is used for generating a plurality of groups of parallel point light sources, the parallel point light sources are atomized after passing through the transparent liquid crystal screen 4 to be detected, one part of the parallel point light sources is scattered, one part of the parallel point light sources continues to move along the original optical path, and the parallel point light sources are changed into cone light with the original point of the parallel light reaching the transparent liquid crystal screen 4 to be detected as the original point. The stronger the haze, the lower the brightness of such cone light. The weaker the haze, the higher the brightness of this cone light. Therefore, under the condition that the intensity of the parallel light source is not changed, the intensity change of the haze at the point of the transparent liquid crystal screen to be detected can be known only by detecting the intensity of the cone light. In this example, a Raila KM-SPP505 type flat light source was used, and the entire array had 4 columns and 3 rows, and 12 parallel light sources were used in total.
The transparent liquid crystal screens 4 to be tested are placed in the light-emitting placing molds 3 in batches, and are placed on the assembly line 2 at fixed intervals together with the light-emitting placing molds 3. In this embodiment, a 32-inch transparent liquid crystal panel of the austin optical and electrical technology ltd, Jiangsu is used.
The to-be-detected transparent liquid crystal screen moving device is used for conveying the to-be-detected transparent liquid crystal screen 4 to an imaging position under the control of a computer 7 after the to-be-detected transparent liquid crystal screen 4 enters a darkroom 1 so as to be detected; it mainly comprises: the device comprises main components such as a luminous placing mold 3, a positioning camera 8, a mechanical arm 9, an air pump 10, a pneumatic actuator 11 and the like.
The positioning camera 8 is used for being placed on a rod beside the mechanical arm 9, is used for shooting light rays of light emitting diodes at four corners of the light emitting placement die 3 and sending the light rays to the computer 7, and therefore positioning of the light emitting placement die 3 is achieved. The computer 7 drives the mechanical arm 9 to align the transparent liquid crystal display 4 to be tested with the pneumatic actuator 11 for grabbing. In this embodiment, a 1000 ten thousand pixel monochrome area-array camera of Basler is used.
The mechanical arm 9 is used for absorbing the transparent liquid crystal screen 4 to be detected from the light-emitting placing mold 3 under the control of the computer 7, carrying the transparent liquid crystal screen 4 to be detected to a specified detection position, and placing the transparent liquid crystal screen 4 to be detected in the light-emitting placing mold 3. In this embodiment, an IRB120 type 6-axis link robot of ABB is used.
The air pump 10 is used for generating pneumatic suction force, so that the transparent liquid crystal screen 4 to be detected can not be damaged when the pneumatic actuator 11 on the mechanical arm 9 can firmly suck the transparent liquid crystal screen. In this example, an Ottos 3X 75W-65L industrial air pump was used.
The pneumatic actuator 11 is a moving terminal fixed on the mechanical arm 9, and after the mechanical arm 9 moves to a specified position, the pressure of a sucker on the pneumatic actuator 11 is opened, so that the transparent liquid crystal screen 4 to be detected is firmly sucked without being damaged. After the mechanical arm 9 moves to the designated position, when the pressure of the sucker on the pneumatic actuator 11 is released, the transparent liquid crystal screen 4 to be detected can be released. In this example, a 32 "size actuator custom made with 2 x 2 industrial suction cups was used.
The test camera 5 is used for shooting the parallel light source array 6 and the patterns mixed with the transparent liquid crystal screen, and sending the patterns to the computer 7 for analysis. In this embodiment, a 1000 ten thousand pixel monochrome area-array camera of Basler is used.
The sound and light prompt system 12 is used for prompting the operator of the operation condition and alarming the abnormal condition. In the embodiment, a Tailong three-color 220V audible and visual alarm is adopted.
The emergency button is used for pressing by an operator to suspend the process under an abnormal condition. In this embodiment, a schneider NP2 type emergency stop button is used.
The embodiment also provides a detection method for rapidly and automatically testing the haze consistency of the transparent liquid crystal display in batch, which comprises the following steps:
step 1: preprocessing, defining a parameter r: after parallel light passes through a transparent liquid crystal screen to be tested, formed conical light irradiates a lens of a testing camera, the position of a central point is found on the formed image, then a circle-like boundary of a point with the brightness of 90% of the central point is found outwards from the central point, and then the average radius r of the boundary is calculated;
step 2: the computer controls the assembly line to travel for a fixed distance, and at the moment, the new transparent liquid crystal screen to be tested and the corresponding light-emitting placement mold appear in the visual field of the positioning camera, wherein the fixed distance is artificially set to be 2 meters in the embodiment;
and step 3: engineering use, namely setting the theoretical haze of the batch of transparent liquid crystal screens to be lower than Dt, grabbing a transparent liquid crystal screen to be measured from a light-emitting placing mould on a production line by using a mechanical arm, vertically placing the transparent liquid crystal screen to a specified position, and measuring by using a parallel light source array if a central point (x) existsn,yn) Brightness, i.e. not 255 consecutive 3 pixels, indicates that the haze is already large, the deviation is too large, no further measurement is necessary, and if present, the D (x) of the center point is calculatedi,yi)；
And 4, step 4: counting the sum of each point of the actual parallel light source array:
wherein n is the total number of parallel light sources of the array;
step (ii) of5: if D istt> (1+ t) n Dt or the presence of a point D (x)i,yi)＞(1+t)*DtIf so, the quality of the transparent liquid crystal screen is indicated to be in problem, and an alarm is sent out; if all are qualified, go to step 6, note down each D (x)i,yi) And a corresponding label, in this example, the parameter t is 10%. Since the parallel light array is 4 × 3 parallel lights, n is 12 here;
step 6: storing data, enabling the result to correspond to the label, facilitating history calling for further analysis, placing the qualified transparent liquid crystal screen into a corresponding light-emitting placing mould, and entering the step 2 if the batch detection task is not finished; and if the data is finished, saving the data of the whole batch, and finishing the work.
The process of calculating r in step 1 is to calculate the barycenter Pz of all 90% of the points (set P) by using a barycenter method, then calculate the distances from all the points P to the Pz, then add and average to obtain r.
The relation between the haze D and the haze r of the liquid crystal screen transmission haze instrument with different haze is calibrated by using the existing expensive and calibrated liquid crystal screen transmission haze instrument on the market to obtain a plurality of groups of corresponding numerical value relations { (r)1,D1),(r2,D2),…(rm,Dm) And fitting by adopting a least square method in a quadratic fitting equation form to obtain: d ═ a ═ r2+ b + r + c, where a, b, c are parameters, obtained by multiple measurements. The least square method is a common algorithm and is not described herein. In this embodiment, the lcd panel transmission haze meter in the market is an AT-TG-1 lcd panel transmission haze meter of the incorporated technologies, hengyi, beijing. It should be noted that such a device need only be used once before it leaves the factory, and is not needed any more.
Claims (6)
1. The utility model provides an intelligent of quick automatic batch test transparent LCD screen haze uniformity is equipped, includes darkroom (1), its characterized in that: be provided with assembly line (2) in darkroom (1), be provided with luminous mould (3) of placing on assembly line (2), the transparent LCD screen (4) that awaits measuring is placed and is being sent out luminous mould (3) and drive through assembly line (2) and remove, assembly line (2) one side is provided with test camera (5), and assembly line (2) opposite side is provided with parallel light source array (6), be provided with the transparent LCD screen translation device that awaits measuring between test camera (5) and parallel light source array (6), the transparent LCD screen (4) that awaits measuring removes to between test camera (5) and parallel light source array (6) through the transparent LCD screen translation device that awaits measuring, test camera (5) other is provided with computer (7).
2. The intelligent equipment for rapidly and automatically testing the haze consistency of the transparent liquid crystal display in batch according to claim 1, wherein the intelligent equipment comprises: the transparent liquid crystal display translation device that awaits measuring includes location camera (8), arm (9), air pump (10) and pneumatic actuator (11), location camera (8) set up by arm (9), pneumatic actuator (11) set up the end at arm (9) for press from both sides and get transparent liquid crystal display (4) that await measuring, air pump (10) provide power for pneumatic actuator (11).
3. The intelligent equipment for rapidly and automatically testing the haze consistency of the transparent liquid crystal display in batch according to claim 1, wherein the intelligent equipment comprises: an acousto-optic prompt system (12) is arranged beside the test camera (5), and the acousto-optic prompt system (12) is used for alarming the operation condition and abnormal condition of an operator.
4. The intelligent equipment for rapidly and automatically testing the haze consistency of the transparent liquid crystal display in batch according to claim 3, wherein the intelligent equipment comprises: and an emergency stop switch is arranged on the acousto-optic prompt system (12) and is used for emergently stopping the whole system.
5. The method for rapidly and automatically testing the haze consistency of the transparent liquid crystal display in batch according to any one of claims 1 to 4, is characterized in that: the method comprises the following steps:
step 1: preprocessing, defining a parameter r: after parallel light passes through a transparent liquid crystal screen to be tested, formed conical light irradiates a lens of a testing camera, the position of a central point is found on the formed image, then a circle-like boundary of a point with the brightness of 90% of the central point is found outwards from the central point, and then the average radius r of the boundary is calculated;
step 2: the computer controls the assembly line to travel for a fixed distance, and at the moment, the new transparent liquid crystal screen to be tested and the corresponding light-emitting placement mold thereof appear in the visual field of the positioning camera;
and step 3: engineering use, namely setting the theoretical haze of the batch of transparent liquid crystal screens to be lower than Dt, grabbing a transparent liquid crystal screen to be measured from a light-emitting placing mould on a production line by using a mechanical arm, vertically placing the transparent liquid crystal screen to a specified position, and measuring by using a parallel light source array if a central point (x) existsn,yn) Brightness, i.e. not 255 consecutive 3 pixels, indicates that the haze is already large, the deviation is too large, no further measurement is necessary, and if present, the D (x) of the center point is calculatedi,yi)；
And 4, step 4: counting the sum of each point of the actual parallel light source array:
wherein n is the total number of parallel light sources of the array;
and 5: if D istt> (1+ t) n Dt or the presence of a point D (x)i,yi)＞(1+t)*DtIf so, the quality of the transparent liquid crystal screen is indicated to be in problem, and an alarm is sent out; if all are qualified, go to step 6, note down each D (x)i,yi) And a corresponding label;
step 6: storing data, enabling the result to correspond to the label, facilitating history calling for further analysis, placing the qualified transparent liquid crystal screen into a corresponding light-emitting placing mould, and entering the step 2 if the batch detection task is not finished; and if the data is finished, saving the data of the whole batch, and finishing the work.
6. The method for rapidly and automatically testing the haze consistency of the transparent liquid crystal display in batch according to claim 5, wherein the method comprises the following steps: the process of calculating r in step 1 is to calculate the barycenter Pz of all 90% of the points (set P) by using a barycenter method, then calculate the distances from all the points P to the Pz, then add and average to obtain r.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001027613A (en) * | 1999-07-13 | 2001-01-30 | Toshiba Ceramics Co Ltd | Foreign matter detection apparatus of transparent ingot and transparent object producing method using the same |
| CN104165753A (en) * | 2014-08-01 | 2014-11-26 | 京东方科技集团股份有限公司 | Device and method for detecting transparent display screen |
| CN107238484A (en) * | 2016-03-28 | 2017-10-10 | 京东方科技集团股份有限公司 | The detection method and detection means of transparent display screen definition |
| CN109444088A (en) * | 2018-11-27 | 2019-03-08 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of aeronautical glasses mist degree and light transmittance test macro |
| CN110567920A (en) * | 2019-10-28 | 2019-12-13 | 苏州天准科技股份有限公司 | detection system for haze of transparent or semitransparent glass |
-
2019
- 2019-12-30 CN CN201911403176.0A patent/CN111077683B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001027613A (en) * | 1999-07-13 | 2001-01-30 | Toshiba Ceramics Co Ltd | Foreign matter detection apparatus of transparent ingot and transparent object producing method using the same |
| CN104165753A (en) * | 2014-08-01 | 2014-11-26 | 京东方科技集团股份有限公司 | Device and method for detecting transparent display screen |
| CN107238484A (en) * | 2016-03-28 | 2017-10-10 | 京东方科技集团股份有限公司 | The detection method and detection means of transparent display screen definition |
| CN109444088A (en) * | 2018-11-27 | 2019-03-08 | 中国航空工业集团公司沈阳飞机设计研究所 | A kind of aeronautical glasses mist degree and light transmittance test macro |
| CN110567920A (en) * | 2019-10-28 | 2019-12-13 | 苏州天准科技股份有限公司 | detection system for haze of transparent or semitransparent glass |
Non-Patent Citations (1)
| Title |
|---|
| 来航曼 等: "《透明液晶显示光学测试方法》国际提案要点解读", 《信息技术与标准化》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113269746A (en) * | 2021-05-23 | 2021-08-17 | 东台升华工具有限公司 | Drill bit wear detection method using image recognition |
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