CN113758868A - Automatic detection robot for display screen and detection method thereof - Google Patents
Automatic detection robot for display screen and detection method thereof Download PDFInfo
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- 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
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
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Abstract
The invention relates to an automatic detection robot for a display screen and a detection method thereof. The invention is composed of a material transportation part and a power-on detection part, can automatically detect the brightness display condition of the display screen, and can separately classify the screens with display problems, thereby facilitating the later manual re-inspection and maintenance work of the display screens with problems.
Description
Technical Field
The invention relates to the field of automatic machinery, in particular to an automatic detection robot for a display screen and a detection method thereof.
Background
With the continuous development of science and technology life, the application and the variety of the display screen are more and more diversified. Such as liquid crystal display screens, computer display screens, television display screens, etc., various display screens are indispensable electronic devices in daily life. Therefore, the production and inspection efficiency of the display screen is becoming more important, and the inspection of the display screen for the presence of light leakage or other defects is an essential step for the inspection of the display screen. Because the display screen needs the project that detects more, including physical deformation or damage detection to and the display module assembly detects, wherein the detection project of display module assembly is more, including black spot, bright spot defect, line defect, edge light leak, show degree of consistency and detect and colour difference and so on.
The conventional display screen detection device generally detects a display screen by adopting a method of lighting the display screen, then taking a picture, and judging whether the display screen has defects or not according to a display result of the taken picture. However, the traditional detection method cannot distinguish the display screen with problems from the normal display screen without problems, the efficiency of detection work can be reduced by distinguishing manually, and meanwhile, the manual work itself can be damaged by lighting the exposed display screen.
Therefore, the technical personnel carry out multi-party research, and provide various automatic detection schemes, mainly comprising multi-unit and multi-flow-line detection, wherein in the scheme, each unit detects one item, so that the flow line is longer, the movement time of the display screen is long, and the efficiency is low; if the detection items are added, the assembly line needs to be laid again, and the detection cost is greatly increased. The other method is to adopt a neural network for identification, the neural network needs to be trained, as the training set is generally carried out by adopting the existing pictures, the model number of the display changes, and when the detection items are newly added, the training needs to be carried out again, the cost is higher, the requirements on technical personnel are higher, the number of the mobile phone screen detection is more at present, the number of the mobile phone screen detection is less in the display, and how to design a light-weight detection network is also one of the difficulties.
Disclosure of Invention
The purpose of the invention is as follows: the invention provides an automatic detection robot for a display screen, and further provides a detection method based on the automatic detection robot for the display screen, so as to solve one of the problems in the prior art.
The technical scheme is as follows: an automatic detection robot for a display screen comprises a material transportation part and a power-on detection part.
The material conveying part comprises a base and a conveying plate; the base is used for supporting the whole material conveying part; the conveying plate is fixedly connected with the base and is arranged on the surface of the base and used for conveying the display screens to be detected in sequence, so that the display screens can be detected conveniently in the later period;
the electrifying detection part comprises a photoreaction detection component and an electrifying component; the photoreaction detection assembly is fixedly connected with the base and further fixed on the surface of the base; the power-on component is adjacent to the photoreaction detection component and is further fixed on the surface of the base.
In a further embodiment, the photoreaction detection assembly comprises three components, a base column, a spin column, and a detection arm. The base pillar is fixedly connected with the base and fixed on the surface of the base and used for positioning and fixing the photoreaction detection assembly; the rotating column is fixed on the base column in a shaft coupling manner and has flexibility for rotating in the horizontal direction by taking the base column as a shaft; the detection arm is fixedly connected with the rotary column and used for carrying out light reaction detection on a display screen to be detected. Simultaneously, through right the regulation and the rotation of column spinner to can drive the regulation and the rotation of detection arm, it is right to so that can carry out the adjustment of detection arm, be convenient for more accurate carry out the photoreaction to display screen and detect.
In a further embodiment, the energizing assembly comprises two parts, namely a bearing column and a telescopic energizing plate. The bearing column is fixedly connected with the base and is arranged on the surface of the base, a concave cavity is formed in the bearing column, and the concave cavity has preset accommodation performance; the side wall surface of the concave cavity is provided with a sliding rail, and the telescopic power-on plate is connected with the bearing column in a sliding manner through the sliding rail on the wall surface of the concave cavity and can be arranged in the concave cavity chamber of the bearing column in a telescopic manner.
In a further embodiment, the detection arm comprises two components of an adapter column and a light reaction receiving plate. The adapter column is fixedly connected with the rotating column and is used for connecting the rotating column with the detection arm; the photoreaction receiving plate is fixed at one end of the switching column in a shaft connection mode and used for receiving, recording and analyzing optical signals sent by the display screen for detection. The adapter column can rotate along with the rotation of the rotary column, and further drives the whole rotation of the photoreaction receiving plate, so that the whole position of the photoreaction receiving plate can be adjusted, the photoreaction receiving plate can be adjusted in a self-rotation mode again, the position of the photoreaction receiving plate can be adjusted more accurately, and the photoreaction receiving plate can accurately receive optical signals.
In a further embodiment, the surface of the conveying plate is provided with clamping components at intervals of a preset distance for fixing the display screen to be detected at the corresponding position of the conveying plate, so that the display screen can be detected conveniently at the later stage. The clamping assembly comprises a fixing plate, a clamping plate and an electrified plug. The fixed plate is fixedly connected with the conveying plate, a circuit board is arranged in the fixed plate, a power-on jack is reserved on one side of the fixed plate, and the circuit board in the fixed plate can be powered on through the power-on jack. The screens board is arranged in the surface of fixed plate, and with fixed plate sliding connection for it is fixed to carry out the screens to the display screen that will detect, just the screens board is a plurality of, and is a plurality of through the adjustment distance between the screens board can be fixed the display screen that will detect. The power-on plug is fixed at one end of the fixing plate and used for communicating the circuit relationship between the circuit board in the fixing plate and the display screen to be detected.
In a further embodiment, the base is further fixedly connected with a cover, the cover is provided with a predetermined accommodating space and a predetermined cavity, through holes are formed in two sides of the cover, and the traditional plate is fixedly connected with the base through the through holes in the two sides of the cover; the power-on detection part is arranged in the accommodating space of the housing and fixedly connected with the base, the housing is made of a light-transmitting-proof material, so that the photoreaction receiving plate can completely receive an optical signal sent by a display screen to be detected and simultaneously protect the human being, and the damage to the eyes of the human being caused by the brightness of the display screen in the detection process is prevented.
In a further embodiment, the power-on detection part is arranged on one side of the traditional plate and is fixedly connected with the base; the other side of conveying board is equipped with unusual screen conveying subassembly for the screen that shows the anomaly that detects out is categorised and is retrieved, and the later stage manual work of being convenient for is carried out one step again and is carried out reinspection and maintenance to the display screen that has the anomaly. And a telescopic push plate is arranged adjacent to the power-on detection part and used for pushing the detected abnormal screen to the abnormal screen conveying assembly to perform centralized recovery and classification processing.
In a further embodiment, the exception screen transfer assembly includes two portions, a conventional fixed plate and a rotating transfer plate. The transmission fixing plate is fixedly connected with the base and is used for providing a fixing support for the abnormal screen transmission assembly; the rotary conveying plate is fixed with the conveying fixed plate in a shaft connection mode and has flexibility of performing omnibearing rotation along the horizontal direction of the conveying fixed plate; furthermore, the rotating conveying plate is provided with a baffle at intervals of a preset distance, so that the display screens on the rotating conveying plate are prevented from falling off in the rotating process, and meanwhile, the baffle can also ensure that each display screen is separated, and the situation that secondary damage is caused to the display screens due to collision among the display screens in the rotating process is avoided.
In a further embodiment of the method of the invention,
the photoreaction receiving plate is provided with an image analysis module for receiving and processing the video data of the video acquisition module, and the processing process specifically comprises the following steps:
reading at least one video frame in each detection period, reading an identification code from the video frame, and storing the mapping relation between the identification code and the current display;
converting the video frame into a gray image by adopting an average value method, reading the numerical value of any channel of the gray image R, G or B, and summing to obtain an image statistical characteristic value;
comparing the image statistical characteristic value with a preset image statistical characteristic value, solving the absolute value of the difference, and if the absolute value is smaller than a threshold value, determining that the image meets the standard; and if the image is larger than the threshold value, carrying out secondary detection on the image.
In a further embodiment, the secondary detection comprises:
respectively calculating the numerical sum of the image R, G and each channel of B in the video frame, and the absolute value of the difference value between the numerical sum and the image statistical characteristic value, if the absolute value is less than a preset value, the image is qualified, and if the absolute value is not consistent, the image is marked as suspected unqualified.
In a further embodiment, the secondary detection further comprises the steps of:
and performing Fourier transform on the image, then performing filtering processing, judging whether a point with a pixel gradient larger than a threshold value exists in the image, and if so, determining that the image is suspected to be unqualified.
A detection method of an automatic detection robot for a display screen comprises the following steps:
s1, manually placing the display screen to be detected at the fixing plate on the conveying plate, clamping and fixing the display screen to be detected by the clamping plate, and inserting the power-on plug into the power supply jack corresponding to the display screen;
s2, starting the detection robot, conveying the display screen to a preset position by the conveying plate to stop, extending the telescopic power-on plate, inserting the telescopic power-on plate into the power-on jack on the fixing plate, and starting to flash and shine after the display screen is powered on;
s3, the light reaction receiving board receives and analyzes the light signal sent by the display screen, and checks whether the display screen has the problem of uneven brightness;
s4, when the problem of uneven brightness exists, the telescopic push plate stretches out, the display screen with the problem is pushed to the rotary conveying plate, and then the rotary conveying plate conveys and recovers the display screen with the problem; when the problem of uneven brightness does not exist, the conveying plate continues to operate, and the detected display screen is conveyed to a manual recovery position to finish detection work;
and S5, repeating the operations S1-S4 in sequence by analogy until all the display screens to be detected are detected.
Has the advantages that: the invention relates to an automatic detection robot for a display screen and a detection method thereof. In a further embodiment, the device comprises a material conveying part and a power-on detection part, can automatically detect the brightness display condition of the display screen, and can separately classify the screens with display problems, so that the later manual re-inspection and maintenance work of the display screens with problems can be conveniently carried out. Meanwhile, the display screen can be detected in the accommodating space of the housing by the housing, so that the condition that the manual work is damaged due to the light emitted by the display screen in the detection process is avoided.
Drawings
Fig. 1 is an overall schematic view of an automated inspection robot for a display screen according to the present invention.
FIG. 2 is a schematic view of a detection arm according to the present invention.
FIG. 3 is a schematic diagram of the energizing assembly according to the present invention.
Fig. 4 is a schematic view of the locking assembly of the present invention.
FIG. 5 is a diagram of an exception screen transfer assembly according to the present invention.
The figures are numbered: the device comprises a base 1, a conveying plate 2, a photoreaction detection component 3, an electrifying component 4, a clamping component 5, an abnormal screen conveying component 6, a housing 7, a telescopic push plate 8, a base column 301, a rotating column 302, a switching column 303, a photoreaction receiving plate 304, a bearing column 401, a telescopic electrifying plate 402, a fixing plate 501, a clamping plate 502, an electrifying plug 503, a conveying fixing plate 601, a rotating conveying plate 602 and a baffle 603.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
The applicant believes that the traditional display screen detection equipment cannot classify and collect the detected abnormal display screens in a centralized way, and the abnormal display screens need to be classified manually, so that the working efficiency of the detection of the display screens is reduced. Meanwhile, the traditional screen detection equipment cannot avoid the damage to the human body caused by lighting the exposed display screen in the detection process.
Therefore, the applicant designs an automatic detection robot for the display screen and a detection method thereof, the industrial robot replaces manual work to detect the brightness display condition of the display screen, the manual work only needs to place the display screen to be detected on the bearing table, and the detection efficiency of the liquid crystal screen is improved. Meanwhile, the cover 7 is arranged, so that the manual work is protected in the display screen detection process, and the damage to the manual work caused by lighting the exposed display screen is avoided.
The invention relates to an automatic detection robot for a display screen. The material conveying part comprises a base 1 and a conveying plate 2; the base 1 is used for supporting the whole material conveying part; the conveying plate 2 is fixedly connected with the base 1, is arranged on the surface of the base 1 and is used for sequentially conveying the display screens to be detected, so that the detection work of the display screens at the later stage is facilitated; the electrifying detection part comprises a photoreaction detection component 3 and an electrifying component 4; the photoreaction detection component 3 is fixedly connected with the base 1 and further fixed on the surface of the base 1; the energizing component 4 is adjacent to the photoreaction detection component 3, and is further fixed on the surface of the base 1.
In a further preferred embodiment, the photoreaction detection assembly 3 comprises three components, namely a base column 301, a rotation column 302 and a detection arm. The base column 301 is fixedly connected with the base 1, is fixed on the surface of the base 1, and is used for positioning and fixing the photoreaction detection assembly 3; considering that a certain deviation exists in the position relationship between the display screen and the photoreaction detection assembly 3 during the process of detecting the display screen, and the adjustment is required, the rotary column 302 is fixed on the base column 301 in a shaft coupling manner, and has flexibility of rotating in the horizontal direction with the base column 301 as the shaft; the detection arm is fixedly connected with the rotary column 302 and is used for carrying out light reaction detection on a display screen to be detected. Meanwhile, the rotating column 302 is adjusted and rotated, so that the detection arm can be driven to adjust and rotate, the detection arm can be adjusted, and the display screen can be conveniently and accurately subjected to photoreaction detection.
In a further preferred embodiment, the power assembly 4 comprises two parts, namely a carrying column 401 and a telescopic power plate 402. The bearing column 401 is fixedly connected with the base 1 and is arranged on the surface of the base 1; considering that the power-on assembly 4 is used for powering on a display screen to be detected, and the display screen can be normally lighted, the bearing column 401 is provided with a concave cavity, and the concave cavity has a predetermined accommodation property; the side wall surface of the concave cavity is provided with a sliding rail, the telescopic electrifying plate 402 is connected with the bearing column 401 in a sliding way through the sliding rail on the wall surface of the concave cavity and can be arranged in the concave cavity of the bearing column 401 in a telescopic way, and when detection work needs to be carried out, the telescopic electrifying plate 402 extends out to carry out electrifying work; when detection work is not needed, the telescopic power-on plate 402 can be retracted into the cavity of the bearing column 401, so that normal operation of a material transportation part is not hindered, meanwhile, the safety of the telescopic power-on plate 402 in an inoperative state is also guaranteed, and protection is provided for the telescopic power-on plate 402.
In a further preferred embodiment, the detection arm comprises two components, namely an adapter 303 and a photoreaction receiving plate 304. The adapter column 303 is fixedly connected with the rotating column 302 and is used for connecting the rotating column 302 with the detection arm; the photoreaction receiving plate 304 is fixed to one end of the adapter column 303 in a shaft coupling manner, and is used for receiving, recording and analyzing an optical signal sent by a display screen for detection. The adapter column 303 can rotate along with the rotation of the rotary column 302, and further drives the whole light reaction receiving plate 304 to rotate, so that the whole light reaction receiving plate 304 is subjected to azimuth adjustment, the light reaction receiving plate 304 can be subjected to self-rotation adjustment again, further more accurate position adjustment is performed, and the light reaction receiving plate 304 can accurately receive a light signal. Meanwhile, in consideration of the problem that the display screen to be detected and the photoreaction receiving plate 304 have azimuth deviation along with the detection, infrared scanning devices are arranged at two side edges of the photoreaction receiving plate, so that the display screen to be detected can be subjected to position scanning, and then the position of the photoreaction receiving plate 304 is adjusted, so that the normal operation and work of the photoreaction receiving plate 304 are ensured.
In a further preferred embodiment, the surface of the conveying plate 2 is provided with a blocking component 5 at every predetermined distance, so as to fix the display screen to be detected at the corresponding position of the conveying plate 2, thereby facilitating the detection of the display screen at the later stage. The detent assembly 5 includes three components, a fixing plate 501, a detent plate 502 and an energizing plug 503. The fixing plate 501 is fixedly connected with the conveying plate 2, a circuit board is arranged in the fixing plate 501, a power-on jack is reserved on one side of the fixing plate 501, and the circuit board in the fixing plate 501 can be powered on through the power-on jack. Considering that the fixing plate 501 needs to be moved to a corresponding position and stopped in the detection process, and the power supply is connected to the power supply through the power-on jack for detection, infrared sensing needle devices are arranged on two sides of the power-on jack, and when the infrared sensing devices sense that the power-on jack moves to a position opposite to the position of the telescopic power-on plate 402, the conveying plate 2 stops conveying, so that the telescopic power-on plate 402 is conveniently connected with the power-on jack. The screens board 502 is arranged in the surface of fixed plate 501, and with fixed plate 501 sliding connection for it is fixed to carry out the screens to the display screen that detects, just the screens board 502 is a plurality of, and is a plurality of through the adjustment distance between the screens board 502 can be fixed the display screen that detects. The power-on plug 503 is fixed at one end of the fixing plate 501 and is used for communicating a circuit relationship between a circuit board in the fixing plate 501 and a display screen to be detected.
In a further preferred embodiment, in consideration of the fact that in the process of detecting a display screen, an optical signal emitted by the display screen is strong and can cause damage to human beings, meanwhile, an exposed detection environment can cause certain influence on the optical signal emitted by the display screen, and further, the receiving of the photoreaction receiving plate 304 can have deviation, the base 1 is further fixedly connected with a housing 7, the housing 7 has a predetermined accommodating space and a predetermined cavity, through holes are arranged on two sides of the housing 7, and the traditional plate is fixedly connected with the base 1 through the through holes on the two sides of the housing 7; the power-on detection part is arranged in the accommodating space of the housing 7 and is fixedly connected with the base 1, the housing 7 is made of a light-transmitting-proof material, so that the light-reaction receiving plate 304 can completely receive a light signal emitted by a display screen to be detected and simultaneously protect the human eyes, and the damage to the human eyes caused by the brightness of the display screen in the detection process is prevented.
In a further preferred embodiment, the energization detecting part is disposed on one side of the conventional board and is fixedly connected to the base 1; in consideration of the fact that the display screen with abnormal display can appear in the process of detecting the display screen, the classification of the abnormal display screen is concentrated, the time for manual classification can be saved, and the abnormal display screen can be conveniently rechecked and maintained at the later stage, an abnormal screen conveying assembly 6 is arranged on the other side of the conveying plate 2 and used for classifying and recycling the detected abnormal display screen. And a telescopic push plate 8 is arranged adjacent to the electrifying detection part and used for pushing the detected abnormal display screen to the abnormal screen conveying assembly 6 for centralized recovery and classification processing. The back of the working face of the housing 7 is provided with a recovery through hole, the abnormal screen transmission assembly 6 transmits the abnormal display screen to the recovery through hole, and the abnormal display screen is manually recovered through the recovery through hole.
In a further preferred embodiment, the abnormal screen transferring assembly 6 comprises two parts, a conventional fixed plate 501 and a rotating transfer plate 602. The transmission fixing plate 601 is fixedly connected with the base 1 and is used for providing a fixing support for the abnormal screen transmission assembly 6; the rotary conveying plate 602 is fixed to the conveying fixing plate 601 by means of a shaft, and has flexibility of performing omnibearing rotation along the horizontal direction of the fixing plate 501 of the conveying plate 2; furthermore, the rotating conveying plate 602 is provided with a baffle 603 at intervals of a predetermined distance, so that the display screens on the rotating conveying plate 602 are prevented from falling off in the rotating process, and meanwhile, the baffle 603 can also ensure that each display screen is separated, thereby avoiding the occurrence of secondary damage to the display screens due to collision between the display screens in the rotating process.
On the basis of the automatic detection robot for the display screen, the invention provides a detection method of the automatic detection robot for the display screen, which comprises the following specific steps:
firstly, the display screen to be detected is manually placed on the fixing plate 501 on the conveying plate 2, the plurality of clamping plates 502 are subjected to distance adjustment, the display screen to be detected is clamped and fixed, and the power-on plug 503 is inserted into the power jack corresponding to the display screen, so that the preparation work is completed.
Then, the detection robot is started, the conveying plate 2 conveys the display screen, when the power jack moves to the position opposite to the telescopic power board 402, the conveying plate 2 stops conveying, the telescopic power board 402 extends out and is inserted into the power jack on the fixing plate 501, and the power work of the detected display screen is completed. Then, the display screen after being powered on starts to flash and shine, and sends an optical signal to the photoreaction receiving plate 304.
Subsequently, the photoreaction receiving board 304 receives and analyzes the optical signal emitted by the display screen, and checks whether the display screen has the problems of uneven brightness, light leakage and the like;
if the problem that the brightness of the display screen is uneven is detected, the telescopic push plate 8 stretches out, the display screen with the problem is pushed to the rotary conveying plate 602, and then the rotary conveying plate 602 conveys and recovers the display screen with the problem; if the problem that the brightness of the display screen is uneven is detected, the conveying plate 2 continues to operate, the detected display screen is conveyed to a manual recycling position, and the detection work is finished.
In a further embodiment, a lightweight approach needs to be devised for fast detection of different defects of each display. Although the prior art has more methods in theory to realize the main functions and processes of the photoreaction receiving plate. But currently in engineering, there is a need for a more quickly implementable solution. At an engineering acceptable accuracy, cost and speed, creative optimization designs are needed.
In order to improve the detection efficiency, when the display screen moves, the display screen is powered on and starts detection, the video acquisition module records video frame image data of each detection period, for example, different modes are circularly adopted for power-on, and data such as black spots, bright spots, uniformity and the like are sequentially detected, so that in the detection process, the detection period corresponding to each detection item has a plurality of video frame data. The method comprises the steps of reading data of a video frame in each detection period, firstly reading identification codes, such as two-dimensional codes or bar codes and other data from video frame images, establishing a mapping relation between the identification codes and a video frame and a display screen, and storing the mapping relation, so that the mapping relation between a display and the identification codes is determined, and in the subsequent detection process, if the video frame detection result shows that the image is displayed in a problem, the corresponding display can be directly searched.
And repeating the above operations in sequence by analogy until all the display screens to be detected are detected.
In order to quickly and efficiently judge whether the image of the video frame is in accordance with the expectation or not, and therefore whether the display has quality problems or not, the following detection flow is designed.
For each video frame, the video frame is converted into a gray image by using an average value method, and at the time, R = G = B in a numerical level, so that data of any channel can be read. After reading the value from any channel of RGB, the sum of the values of the channel is obtained and recorded as the image statistical characteristic value.
And comparing the image statistical characteristic value with an image statistical characteristic value of a standard image preset in the system, solving an absolute value of a difference value between the image statistical characteristic value and the image statistical characteristic value, if the absolute value is smaller than a threshold value preset in the system, determining that the image meets the standard, and if the absolute value is larger than the threshold value set in the system, performing secondary detection on the image.
In this embodiment, since the image statistical characteristic value can represent the overall situation of the image pixel, if the image has a black dot, a bright dot, light leakage, or a large color difference, it can reflect that the image has a quality problem, and at this time, it can be basically determined that the image display has a problem, and it can be roughly determined that the image display quality is not good.
Due to the above-mentioned defects, they are superimposed on each other as a whole, such as occurrence of a bright spot and edge light leakage, and the directions of deviation thereof are the same at the angle of the statistical feature value of the image. There is a greater deviation in the image statistical characteristic values if a plurality of defects occur. The quality of the image can therefore be determined with a high probability of complying with engineering standards.
For a small portion of defects that may have opposite trends, such as bright spots and black spots, an increase and a decrease may occur in the portion of the display, and thus the portion of the display may be erroneously determined as being of a normal quality in the overall statistics. So a secondary detection is required.
In fact, in the engineering process, the accuracy of 99.9 percent can be achieved by one detection. To further improve the accuracy, the following method can be adopted:
respectively calculating the numerical sum of the image R, G and each channel of B in the video frame, and the absolute value of the difference value between the numerical sum and the image statistical characteristic value, if the absolute value is less than a preset value, the image is qualified, and if the absolute value is not consistent, the image is marked as suspected unqualified.
That is to say, the difference between the original image and the gray scale image after the average value processing is determined, and if the difference is greater than a preset value, it is indicated that a large color difference exists in a certain pixel channel, so that the risk of quality problems is large. Or through Fourier transformation and then filtering processing, whether a point with a pixel gradient larger than a threshold value exists in the image or not is judged, and if the point exists, the image is determined to be unqualified.
By the method, the range of detectable defects is enlarged, the flexibility of the system is increased, the quality of the display can be rapidly detected under the condition of meeting the engineering requirements, and the turnover speed and the detection efficiency of the product are improved. Compared with the existing various methods, the method has the advantages of lower cost, no need of high requirements on technical personnel, real-time adoption of a corresponding method when the display is replaced, no need of retraining the neural network and wider application range.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An automatic detection robot for a display screen is characterized by comprising:
the material conveying part is used for supporting the whole base of the material conveying part and is fixedly connected with the conveying plate;
an electrification detecting part, a photoreaction detecting component fixed on the surface of the base; and the electrifying component is adjacent to the photoreaction detection component and is fixedly connected with the base.
2. The automated inspection robot for display screen of claim 1, wherein the light reaction detection assembly comprises:
the base column is fixedly connected with the base and used for positioning and fixing the photoreaction detection assembly;
a rotating column which is coupled on the base column and has flexibility for horizontal rotation by taking the base column as a shaft;
and the detection arm is fixedly connected with the rotating column and is used for carrying out photoreaction detection on the display screen to be detected.
3. The automated inspection robot for display screens of claim 1, wherein the power-on assembly comprises:
the bearing column is fixedly connected with the base and is arranged on the surface of the base, and a concave cavity is formed in the bearing column;
and the telescopic power-on plate is arranged in the concave cavity chamber of the bearing column and is in sliding connection with the bearing column.
4. The automated inspection robot for display screens of claim 2, wherein the inspection arm comprises:
the adapter column is fixedly connected with the rotating column and used for connecting the rotating column with the detection arm;
the photoreaction receiving plate is fixed at one end of the switching column in a shaft connection mode and used for receiving and recording optical information sent by a display screen for detection; the light reaction receiving board is provided with a video acquisition module for recording image data of the display screen and reading an identification code arranged on the display screen.
5. The automated inspection robot for display screens of claim 1, wherein:
the conveying plate is characterized in that clamping components are arranged on the surface of the conveying plate at intervals of preset distances and used for fixing a display screen to be detected at the corresponding position of the conveying plate, so that the display screen can be conveniently detected.
6. The automated inspection robot for display screens of claim 5, wherein the position-locking assembly comprises:
the fixed plate is fixedly connected with the conveying plate, a circuit board is arranged in the fixed plate, and a power-on jack is reserved on one side of the fixed plate;
the clamping plate is arranged on the surface of the fixing plate, is in sliding connection with the fixing plate and is used for clamping and fixing the display screen to be detected;
and the power-on plug is fixed at one end of the fixing plate and is used for communicating the circuit relationship between the circuit board in the fixing plate and the display screen to be detected.
7. The automated inspection robot for display screens of claim 1, wherein:
the base is fixedly connected with a housing, the housing is provided with a preset accommodating space and a cavity, through holes are formed in two sides of the housing, and the conveying plate is fixedly connected with the base through the through holes; the power-on detection part is arranged in the accommodating space of the housing and is fixedly connected with the base;
the power-on detection part is arranged on one side of the transmission plate and is fixedly connected with the base; an abnormal screen conveying assembly is arranged on the other side of the conveying plate and used for classifying and recycling the detected abnormal screen; and a telescopic push plate is arranged adjacent to the power-on detection part and used for pushing a screen displaying abnormity to the abnormal screen conveying assembly.
8. The automated inspection robot for display screens of claim 7, wherein:
the exception screen transfer component comprises;
the conveying fixing plate is fixedly connected with the base and is used for providing a fixing support for the abnormal screen conveying assembly;
the rotary conveying plate is fixed with the conveying fixed plate in a shaft connection mode and has flexibility in all-directional rotation along the horizontal direction of the conveying fixed plate;
the rotating conveying plate is provided with baffles at intervals of preset distance, so that the display screen on the rotating conveying plate is prevented from falling off in the rotating process.
9. The automated inspection robot for display screen according to claim 1,
the photoreaction receiving plate is provided with an image analysis module for receiving and processing the video data of the video acquisition module, and the processing process is as follows.
10. The inspection method of an automated inspection robot for display screens according to any one of claims 1 to 9, comprising the steps of:
s1, manually placing the display screen to be detected at the fixing plate on the conveying plate, clamping and fixing the display screen to be detected by the clamping plate, and inserting the power-on plug into the power supply jack corresponding to the display screen;
s2, starting the detection robot, conveying the display screen to a preset position by the conveying plate to stop, extending the telescopic power-on plate, inserting the telescopic power-on plate into the power-on jack on the fixing plate, and starting to flash and shine after the display screen is powered on;
s3, the light reaction receiving board receives and analyzes the light signal sent by the display screen, and checks whether the display screen has the problem of uneven brightness;
s4, when the problem of uneven brightness exists, the telescopic push plate stretches out, the display screen with the problem is pushed to the rotary conveying plate, and then the rotary conveying plate conveys and recovers the display screen with the problem; when the problem of uneven brightness does not exist, the conveying plate continues to operate, and the detected display screen is conveyed to a manual recovery position to finish detection work;
and S5, repeating the operations S1-S4 in sequence by analogy until all the display screens to be detected are detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110936522.2A CN113758868A (en) | 2021-08-16 | 2021-08-16 | Automatic detection robot for display screen and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110936522.2A CN113758868A (en) | 2021-08-16 | 2021-08-16 | Automatic detection robot for display screen and detection method thereof |
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| Publication Number | Publication Date |
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| CN113758868A true CN113758868A (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110936522.2A Withdrawn CN113758868A (en) | 2021-08-16 | 2021-08-16 | Automatic detection robot for display screen and detection method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115202274A (en) * | 2022-09-13 | 2022-10-18 | 广州市保伦电子有限公司 | Self-checking method, system and device of equipment screen and storage medium |
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2021
- 2021-08-16 CN CN202110936522.2A patent/CN113758868A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115202274A (en) * | 2022-09-13 | 2022-10-18 | 广州市保伦电子有限公司 | Self-checking method, system and device of equipment screen and storage medium |
| CN115202274B (en) * | 2022-09-13 | 2022-11-22 | 广州市保伦电子有限公司 | Self-checking method, system and device of equipment screen and storage medium |
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Application publication date: 20211207 |