CN102692418A - Equipment and method for detecting appearances and functions of flat panel display screens - Google Patents
Equipment and method for detecting appearances and functions of flat panel display screens Download PDFInfo
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- CN102692418A CN102692418A CN2012101945682A CN201210194568A CN102692418A CN 102692418 A CN102692418 A CN 102692418A CN 2012101945682 A CN2012101945682 A CN 2012101945682A CN 201210194568 A CN201210194568 A CN 201210194568A CN 102692418 A CN102692418 A CN 102692418A
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Abstract
The invention discloses equipment and method for detecting the appearances and functions of flat panel display screens. According to the equipment, frontal irradiation, an imaging system based on a light source and an irradiation manner which are specially designed, and a group of cameras which are in symmetrical distribution along the center of a rail are adopted, images of display screens at the front faces of flat panel products are acquired at relatively-high resolution, the detection is achieved during movement, and detection results are stored through being correlated with the IDs (Identities) of the products. According to dual-screen defect detection equipment defined by the invention, positions of electronic products are transmitted to the cameras through sensors, the cameras are triggered to acquire images in a timing manner, and high-accuracy algorithmic analysis is carried out according to the acquired images, so that the detection results are objective and accurate. The flat panel display screen defect detection design of the equipment is applicable to assembly defect detection during internal detection, appearance defect detection during external detection, and functional detection of the flat panel display screens. The equipment has the main advantages that the detection on defects of the appearances and functions of display screens of the flat panel electronic products is carried out in a conveying process based on conveying belts, so that the engagement with other assembly lines in a factory is facilitated, the cycle of detection is short, the operation is simple, the production capacity is not influenced, and the quality management and control can be improved.
Description
Technical field
The invention belongs to the checkout equipment technical field, be specifically related to outward appearance and Function detection, bad order and the bad detection of screen function in can be used for during bad and outer inspection of the assembling in when inspection panel display screen.Detected object mainly contains flat-type electronic products such as panel computer, mobile phone.
Background technology
Along with the arrival in " removableization " epoch, the first-selection that portable dull and stereotyped efficiently electronic product will become business people and younger generation is equipped with.Again to the GPS location, we can put into pocket to them easily, carry from mobile phone, notebook, MP3, and they are just changing our life style and habits and customs.Light and handy portable dull and stereotyped electronic product will be the main product in the IT market, also be the leading of removable digital product.And the touch LCD display screen has also obtained sufficient application in the application of dull and stereotyped electronic product, is all bringing into play important effect in daily life and industrial control field.
To the open defect of automatic detected electrons product and assemble and badly be achieved, concrete patent is asked for an interview: 201110238697.2.For the outward appearance that realizes dull and stereotyped electronic product display screen and the robotization of Function detection then is the another big emphasis that need break through present stage.
Summary of the invention
The invention discloses a kind of panel display screen outward appearance and Function detection equipment and detection method.This equipment is under based on the imaging system of the light source of particular design and radiation modality, to gather the positive image of flat panel products; Utilization graphical analysis and image processing techniques detect the finished product before dispatching from the factory, and judge that panel display screen has or not outward appearance and functional defects such as bright line concealed wire, cut, spot, bright spot and breakage.The present invention has broken the traditional detection pattern of panel display screen outward appearance and function detecting method, has increased substantially the product yield of flat-panel monitor, makes testing result have more objectivity, accuracy, ease for use.
The technical scheme that the present invention adopts is specific as follows:
A kind of flat-panel monitor outward appearance and Function detection equipment, this checkout equipment comprises imaging system, sensor, light source, based on transfer system and a plurality of camera of transport tape, it is characterized in that:
Said imaging system is to carry out IMAQ and Flame Image Process through said a plurality of cameras;
Said a plurality of camera is that the center skew symmetry along the transport tape traffic direction distributes and is installed on directly over the transport tape; Trigger first by said sensor under the auxiliary irradiation of said light source adopt figure after timing; Carry out the successive image collection, move away the coverage of corresponding camera until thing to be checked;
Said light source is by light-source controller controls, and a corresponding light source is installed below each camera, after sensor senses thing to be checked arrives the precalculated position, triggers the light-source controller controls respective sources and starts, and auxiliary camera is adopted figure in testing process;
Said sensor is that the IO by software control sticks into row control, after perception thing to be checked arrives the precalculated position, triggers the picture that corresponding camera is gathered thing to be checked front display screen;
Said each camera reaches control system with institute's images acquired and carries out graphical analysis and processing, and the graphical analysis of passing through to be gathered judges whether thing to be checked exists defectives such as silk-screen, cut, bright line, concealed wire.Concrete, said panel display screen is the glass touch display screen; Said camera is a CCD high definition camera; Said panel display screen is to adopt figure by the said camera of said sensor-triggered down the auxiliary of said light source, and software carries out analyzing and processing output result to the image after gathering.
The present invention also discloses simultaneously and a kind ofly it is characterized in that based on above-mentioned dull and stereotyped outward appearance and Function detection equipment testing method, said method comprising the steps of:
When (1) said thing to be checked transfers to the transport tape inlet, begin to get into quality testing to be checked and survey state to be checked;
When (2) thing to be checked transfers to the appreciable precalculated position of first sensor S5 near the transport tape top of transport tape porch, open corresponding first light source 2, and trigger IO card control first camera 2 and carry out timing and adopt figure;
When (3) thing to be checked transfers to the appreciable precalculated position of the second sensor S6 that is positioned at transport tape direct of travel center top, open secondary light source 3, and trigger IO card control second camera 3 and carry out timing and adopt figure;
When (4) thing to be checked transfers to the appreciable precalculated position of the 3rd sensor S7 away from the transport tape top of transport tape porch, open the 3rd light source 4, and trigger IO card control third phase machine 4 and carry out timing and adopt figure;
(5) thing to be checked moves to RFID Reader below when reading product IDs, and the panel display screen defects detection finishes.
Compared with prior art; Panel display screen outward appearance of the present invention and functional defect checkout equipment have adopted the mode based on transport tape; In thing motion process to be checked, gather display image, have or not outward appearance and functional defect detections such as bright line concealed wire, cut, spot, bright spot and breakage according to the display image that is collected, the High-Speed Automatic detection of round Realization; Improved greatly the assembling of dull and stereotyped electronic product accomplish after the defective recall rate of display screen, effectively improved the quality of product.
Description of drawings
Fig. 1 is the topology layout figure of present device;
Fig. 2 is the one-piece construction synoptic diagram of present device;
Fig. 3 is the outline flowchart of detection method of the present invention.
Embodiment
For specifying technology contents of the present invention, structural attitude, the purpose that is realized and effect, will combine embodiment and conjunction with figs. to specify below.
As shown in Figure 1, said panel display screen outward appearance and Function detection equipment comprise control system, imaging system and based on transfer system and sensor, light source and a plurality of camera of transport tape.
Said control system mainly comprises modules such as computing machine, IO data acquisition card, motion control card, sensor, light source controller.The function of each module is following:
Further, said computing machine is the important pivot that connects sensor and camera, links to each other with a plurality of cameras respectively.When computing machine receives thing to be checked that sensor inputs to the IO data acquisition card when arriving the image capture position signal; Said computing machine is adjusted the rotating speed of said transport tape through motion control card to the motor driver output control signal of transfer system, and controls a plurality of cameras of said multi-angle installation and the image that thing to be checked is gathered in the light source operation.
Said sensor is mainly used in the shift position of perception thing to be checked, adopts figure through the position signalling triggering that sensor is passed on.Said sensor is at least one; Be preferably 3 pairs; In the preferred embodiment first to the 3rd sensor (S5/S6/S7) is installed in the transport tape symmetria bilateralis; First sensor S5 is installed on 15mm place, first camera, 2 the right sides (promptly near transport tape edge one side) the place aheads (being the transport tape working direction), is mainly used in behind perception object location to be checked, opens light source 2, I/O data acquisition card through light source controller respectively and triggers first camera 2 and carry out timing and adopt figure; The second sensor S6 is installed on 120mm place, a S5 the place ahead, is mainly used in behind perception object location to be checked and opens secondary light source 3 through light source controller, and trigger 3 timing of second camera through the I/O data acquisition card and adopt figure; The 3rd sensor S7 is installed on 120mm place, second sensor S6 the place ahead, is mainly used in behind perception object location to be checked and opens the 3rd light source 4 through light source controller, and trigger third phase machine 4 and carry out timing and adopt figure.
Said imaging system mainly comprises camera, camera lens, light source etc.
Further, said camera is to be triggered the IO card and send to camera and adopt the figure order perceiving under the situation of thing to be checked by sensor, and camera will have the software control timing to adopt figure automatically after adopting the figure signal receiving.It is to calculate according to speed and shift position that thing to be checked moves that the figure frequency is adopted in the timing of said camera.Camera is gathered an image and all can be transferred in the said computing machine and store, said computing machine when receiving image immediately uses algorithm image is carried out analyzing and processing, and output analysis result.Said camera be installed on transmission system directly over the 272mm place, be at least 1, be preferably 3 (camera 2/ camera 3/ cameras 4).3 cameras (like Fig. 1) in the said instance are respectively to carry out layout along the orbit centre symmetrical manner; Thing to be checked is divided into left, center, right three parts; The such layout of camera is helped covering thing to be checked comprehensively, guarantee the camera institute comprehensive no dead angle of images acquired.As shown in Figure 1; Second camera is positioned at the centre top of transport tape, and second camera 2 and the 4th camera 4 are that the center skew symmetry distributes with third phase machine 3, and the fore-and-aft clearance between each camera is 120mm; About the 40mm of being separated by, the camera optimal resolution is set to 25um/pixel in the preferred embodiment.Below will be elaborated to 3 cameras:
Said camera lens is mainly used in auxiliary camera and is carried out to picture.
Said light source is by the light source controller domination, the special angle light source that customizes to the singularity that detects display screen, and auxiliary camera can be gathered optimum image.Light source and camera are one to one, and each camera below all is installed with a corresponding light source, and light source is installed on 249mm place (as shown in Figure 2), camera below, and behind object location to be checked, control system starts light source in sensor senses, and auxiliary camera is adopted figure.3 light sources (first light source, 2/ secondary light source 3/ the 3rd light source 4) are arranged in the said instance, and auxiliary respectively first camera 2, second camera 3 and third phase machine 4 are adopted figure.Light source is mainly dominated by position transducer, and when equipment is in situation to be checked following time, light source starts temporarily, only opens at position sensor senses light source behind the thing to be checked, gets into the auxiliary figure that adopts of running status.
Transfer system: (transport tape)
The transfer system based on transport tape described in Fig. 1 is a carrier that transmits thing to be checked.Through this transfer system thing whole process to be checked is in the motion process, images acquired detects when flow to be checked.Not only change the manual placement or the manual detection mode of traditional approach, also be convenient to be connected with other production lines.Said transfer system is after the detected image finishing collecting; Automatically the RFID that is sent to production line is read the zone to carry out thing ID to be checked by electronic tag read module RFID Reader and reads; Testing result just is connected with thing ID to be checked like this, has guaranteed that testing result has according to following.
Below in conjunction with example in detail panel display screen outward appearance and Function detection equipment testing flow process, please refer to accompanying drawing 3:
When (1) said thing to be checked transfers to front display screen surveyed area, begin to get into the panel display screen detected state;
When (2) thing to be checked moves to the precalculated position that first sensor S5 can perception; First sensor S5 perceives the shift position of thing to be checked and the position signalling of thing to be checked is sent to the IO card; (front has been introduced control system and has been comprised the I/O card by light source controller; The signal of putting off until some time later now bright I/O card transfers to control system, belongs to unclear problem) open first light source 2, and send to first camera 2 by the IO card and to adopt the figure signal.This moment, camera 2 descended to carry out timing by software control to adopt figure the auxiliary of first light source 2 after receiving and adopting the figure signal.Uses algorithm is carried out analyzing and processing to image immediately when computing machine receives the input picture of camera, and the Algorithm Analysis of image is handled and can be walked abreast.
When (3) thing to be checked moves to the precalculated position that the second sensor S6 can perception; The second sensor S6 perceives the shift position of thing to be checked and the position signalling of thing to be checked is sent to the IO card; (front has been introduced control system and has been comprised the I/O card by light source controller; The signal of putting off until some time later now bright I/O card transfers to control system, belongs to unclear problem) open secondary light source 3, and send after adopting the figure signal to second camera 3 by the IO card that carrying out timing by software control adopts figure down secondary light source 3 auxiliary.First camera 2 and second camera 3 can be in to move simultaneously and adopt under the figure state this moment.Computing machine carries out Algorithm Analysis to first camera 2 and 3 images acquired of second camera.
When (4) thing to be checked moves to the 3rd sensor S7; The 3rd sensor S7 perceives the shift position of thing to be checked and the position signalling of thing to be checked is sent to the IO card; Open the 3rd light source 4 by light source controller, and send after adopting the figure signal to third phase machine 4 by the IO card that carrying out timing by software control adopts figure down the 3rd light source 4 auxiliary.Camera 2, second camera 3 and third phase machine 4 all were in operation simultaneously and adopted under the figure state this moment first.Computing machine carries out Algorithm Analysis to first camera 2, second camera 3 and 4 images acquired of third phase machine.
(5) adopt graph region when the whole outflow camera of thing to be checked, get into electronic tag read module RFID Reader zone and carry out thing ID to be checked when detecting, panel display screen IMAQ and image algorithm analytical work finish.Computing machine is exported quality testing to be checked and is surveyed the result, and testing result is combined with the id information of thing to be checked, is uploaded to the customizing messages storage area of factory.
(6) at this moment, the functional defect testing that reaches of panel display screen finishes.
The above disclosed the preferred embodiments of the present invention that are merely can not limit the present invention's interest field certainly with this, so according to the equivalent variations that claim of the present invention is done, still belong to the scope that the present invention is contained.
Claims (5)
1. flat-panel monitor outward appearance and Function detection equipment, this checkout equipment comprises imaging system, sensor, light source, based on transfer system and a plurality of camera of transport tape, it is characterized in that:
Said imaging system is to carry out IMAQ and Flame Image Process through said a plurality of cameras;
Said a plurality of camera is to distribute along the center line skew symmetry of transport tape direct of travel to be installed on directly over the transport tape; Trigger first by said sensor under the auxiliary irradiation of said light source adopt figure after timing; Carry out the successive image collection, move away the coverage of corresponding camera until thing to be checked;
Said light source is by light-source controller controls, and a corresponding light source is installed below each camera, after sensor senses thing to be checked arrives the precalculated position, triggers the light-source controller controls respective sources and starts, and auxiliary camera is adopted figure in testing process;
Said sensor is that the IO by software control sticks into row control, and after perception thing to be checked arrived the precalculated position, triggering IO card sent to respective camera and adopts figure and order, and said camera is gathered the picture of thing to be checked front display screen;
Said each camera reaches control system with institute's images acquired and carries out graphical analysis and processing, and the graphical analysis of passing through to be gathered judges whether thing to be checked exists defectives such as silk-screen, cut.
2. flat-panel monitor outward appearance according to claim 1 and Function detection equipment is characterized in that:
Also comprise the radio frequency identification RFID read module, it is arranged on the top of transport tape, thing to be checked is carried out after IMAQ finishes in imaging system, by transfer system thing to be checked is sent to RFID automatically and reads the zone and carry out thing ID to be checked and read.
3. flat-panel monitor outward appearance according to claim 1 and Function detection equipment is characterized in that:
Said a plurality of camera is 3 cameras, and one of them is positioned at the top, center of transport tape direct of travel, and all the other two cameras are that the center becomes the oblique line symmetry to be installed in the transport tape top with this camera.
4. flat-panel monitor outward appearance according to claim 3 and Function detection equipment is characterized in that:
Said a plurality of camera be installed on transport tape directly over the 272mm place, the fore-and-aft clearance between each camera is 120mm, about the 40mm of being separated by; Each light source is installed on 249mm place, corresponding camera below.
5. the flat-panel monitor appearance detecting method based on said flat-panel monitor outward appearance of claim 1-4 and Function detection equipment is characterized in that, said method comprising the steps of:
When (1) said thing to be checked transfers to the transport tape inlet, begin to get into quality testing to be checked and survey state to be checked;
When (2) thing to be checked transfers to the appreciable precalculated position of first sensor (S5) near the transport tape top of transport tape porch, open corresponding first light source (2), and trigger IO card control first camera (2) and carry out timing and adopt figure;
When (3) thing to be checked transfers to the appreciable precalculated position of second sensor (S6) that is positioned at transport tape direct of travel center top, open secondary light source (3), and trigger IO card control second camera (3) and carry out timing and adopt figure;
When (4) thing to be checked transfers to the appreciable precalculated position of the 3rd sensor (S7) away from the transport tape top of transport tape porch, open the 3rd light source (4), and trigger IO card control third phase machine (4) and carry out timing and adopt figure;
(5) thing to be checked moves to RFID Reader below when reading product IDs, and the panel display screen defects detection finishes.
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Application publication date: 20120926 |