CN104819829B - A kind of full-automatic LED charactron photodetector system and its method - Google Patents
A kind of full-automatic LED charactron photodetector system and its method Download PDFInfo
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Abstract
The present invention provides a kind of full-automatic LED charactron photodetector system and its method, including：Automatic charging module, automatic detection module, automatic blanking module and main control module；The automatic detection module includes clear glass, X and contacts module, image collection module, image processing module, electric performance test module and camera bellows to mechanical arm, Y-direction mechanical arm, Z-direction mechanical arm, driving source；The automatic blanking module is used to realize the automatic sorting for having detected LED charactrons；The main control module is used for the operation for controlling whole full-automatic LED charactron photodetector system.The full-automatic LED charactron photodetector system and its method of the present invention makes it possible that different types of LED charactrons realize efficient full-automatic testing, and to the speed of the photoelectric properties detection of LED charactrons is fast, the degree of accuracy is high.
Description
Technical field
The present invention relates to a kind of photodetector system and its method, more particularly to a kind of full-automatic LED charactron photoelectricity
Detecting system and its method.
Background technology
Field is manufactured, it is necessary to carry out the production detection of mass to the LED charactrons for having manufactured completion in LED, detects LED
Electric property, functional parameter, outward appearance of charactron etc..For LED charactrons, in addition to aforementioned properties are detected, in addition it is also necessary to right
The optical property parameter of LED charactrons is detected.
Under current technical situation, the front end process in electronic component manufacturing process, the fixation of such as chip, the welding of chip
Deng all having been completed by automatic machinery, and the detection process of electronic component, automaticity is relatively low, in particular for portion
Divide the electronic component in field or the electronic component of non-standard encapsulation.
The main cause that the electronic component of non-standard encapsulation is difficult to automatic detection is, these electronic components
Profile and pin size are irregular, and bin differences are big between different types of device, and automatic machinery is needed first to quilt
The feature for surveying object is refined and learnt, and could be realized and be standardized and repeated detection operation, but measurand feature
Uncertainty greatly increases the difficulty of refinement and study.
Specifically, the LED charactrons of non-standard encapsulation are mostly examined using artificial detection or special equipment in the prior art
Survey.Wherein, detection includes electrical property detection and optical property detection for inspection.Electrical property detection is in the industry cycle highly developed, mainly passes through
The voltage-current characteristic of apparatus measures LED component.
The artificial detection of optical property, that is, light after LED charactrons, manually visually judges whether every optical parametric accords with
Close and require.By artificial and naked-eye observation detection project, there is the inconsistency of subjectivity and testing result, meanwhile, these
Detection project is very high to the skill set requirements of testing staff, and testing staff needs could be on duty by longer study and training.
Therefore, not only detection efficiency is low, accuracy is poor for the artificial detection method of LED charactrons photoelectric properties of the prior art, expends
Manpower it is big and high to the skill set requirements of testing staff, detection time length easily causes fatigue damage and the inspection of testing staff
Survey the reduction of accuracy.
The special equipment detection of optical property, i.e., detected using special luminance test instrument.This needs to light one by one
Each tube core, and the optical characteristics of each LED charactrons by manually operating is tested and recorded one by one.Tested with such method
One device needs long time, is generally used for sample test research, and is not used to mass manufacturing process completely,
Luminance test instrument cost is higher, it is impossible to test chromaticity index, impurity index etc., and utilization rate is low.
In summary, the Photoelectric Detections of LED charactrons is still needed in the prior art and manually carries out different degrees of ginseng
With the on the one hand degree of accuracy of influence detection efficiency, on the other hand influence detection.
The content of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide a kind of full-automatic LED charactron light
Electricity detecting system and its method, without artificial participation, full automatic can realize the Photoelectric Detection of LED charactrons, overcome existing
Using the artificial various defects for participating in LED charactron Photoelectric Detections in technology.
In order to achieve the above objects and other related objects, the present invention provides a kind of full-automatic LED charactron Photoelectric Detection system
System, including automatic charging module, automatic detection module, automatic blanking module and main control module；The automatic charging module and institute
State main control module to be connected, the automatic charging for realizing tested LED charactrons；The automatic detection module is used to realize to tested
The automatic optoelectronic detection of LED charactrons, including clear glass, X are contacted to mechanical arm, Y-direction mechanical arm, Z-direction mechanical arm, driving source
Module, image collection module, image processing module, electric performance test module and camera bellows；The X is mechanical to mechanical arm, the Y-direction
Arm and the Z-direction mechanical arm are connected with the main control module, for the positional information according to tested LED charactrons, drive institute
Driving source contact module is stated to be in contact with the pin of tested LED charactrons；The driving source contact module and the Z-direction mechanical arm
It is connected, is in contact for the pin with tested LED charactrons；Described image acquisition module is connected with main control module, for obtaining
The image information of tested LED charactrons；Described image processing module is connected with described image acquisition module and the main control module,
Before the electricity on tested LED charactrons, at the image information of the LED charactrons acquired in described image acquisition module
Reason, obtains the positional information of tested LED charactrons；On tested LED charactrons after electricity, to acquired in described image acquisition module
The image informations of LED charactrons handled, obtain the optical performance information of tested LED charactrons；The electric performance test
Module is connected with the main control module, after the electricity on tested LED charactrons, obtains the electric property of tested LED charactrons
Information；The camera bellows is used to enclose full-automatic LED charactron photodetector system；The automatic blanking module with it is described
Main control module is connected, and the automatic sorting of LED charactrons has been detected for realizing；The main control module is used to control entirely full-automatic
The operation of LED charactron photodetector systems, and according to image processing module and the test result of electric performance test module, judge
Tested LED charactrons whether be non-defective unit and defective type.
According to above-mentioned full-automatic LED charactron photodetector system, wherein：The automatic charging module includes storing
Disk, X-axis mechanical arm and Y-axis mechanical arm；The material storage dish is used to place tested LED charactrons in an orderly manner；The X-axis mechanical arm with
The main control module is connected, under the control of the main control module, promoting the device on material storage dish to be moved to X-direction, and
The row of foremost one is tested into LED charactrons to be moved on the flat board below Y-axis mechanical arm；The Y-axis mechanical arm and main control module
It is connected, for the test under the control of the main control module, promoting the tested LED charactrons on flat board to enter on clear glass
Working position.
According to above-mentioned full-automatic LED charactron photodetector system, wherein：The automatic blanking module includes several
Sort cylinder, several defectives sorting box and discharge belt；The sorting cylinder is used to have detected on clear glass
LED charactrons are sorted according to testing result；The defective sorting box is used to deposit defective LED charactrons；It is described
Discharge belt is used to transmit the LED charactrons for being detected as non-defective unit.
According to above-mentioned full-automatic LED charactron photodetector system, wherein：The automatic detection module also includes adjustable
The slideway of byte wide, is arranged on the clear glass, and the tested LED charactrons for controlling to be placed on clear glass are put
Put scope.
According to above-mentioned full-automatic LED charactron photodetector system, wherein：The driving source contact module includes thimble
With thimble spacing adjusting device.
According to above-mentioned full-automatic LED charactron photodetector system, wherein：The optical performance information includes LED numbers
The luminous brightness uniformity of code pipe, uniformity of chromaticity, brightness stepping, colourity stepping, whether light leak, whether have impurity and be outer
Shell is no cut.
According to above-mentioned full-automatic LED charactron photodetector system, wherein：The electric property information includes LED numbers
The forward voltage values of code pipe, reverse leakage value, open circuit information, short circuit information.
According to above-mentioned full-automatic LED charactron photodetector system, wherein：Also include display module, the display mould
Block is connected with main control module, for show current tested LED charactrons whether be non-defective unit and defect type.
Meanwhile, the present invention also provides a kind of according to any of the above-described described full-automatic LED charactron photodetector system
Detection method, comprises the following steps：
Step S1, by the digital pipe surfaces of tested LED down, pin be arranged closely in upward according to ranks on material storage dish, X
Shaft mechanical arm and Y-axis mechanical arm promote the tested LED charactrons on material storage dish to enter clear glass in X to Y-direction respectively
On test job position；
Step S2, image collection module obtain the image information of tested LED charactrons, and main control module is believed according to described image
Cease the positional information of the tested LED charactrons obtained；
Step S3, the positional information according to tested LED charactrons, X drive to mechanical arm, Y-direction mechanical arm and Z-direction mechanical arm
Driving source contact module is in contact with the pin of tested LED charactrons；
Step S4, under the control of main control module, be tested electricity on LED charactrons, image capture module is obtained after upper electricity
The image information of tested LED charactrons；Image processing module is handled the image information of acquired LED charactrons, is obtained
Take the optical performance information of LED charactrons；Electric performance test module obtains the electric property information of tested LED charactrons；
Step S5, main control module judge tested according to the optical performance information and electric property information of tested LED charactrons
Whether LED charactrons are non-defective unit；
Step S6, the testing result according to tested LED charactrons, when new tested LED charactrons enter clear glass
Test job position on when, each sorting cylinder distinguishes the LED charactrons of the different testing results detected on clear glass
Sort out.
According to above-mentioned full-automatic LED charactron photoelectric detecting method, wherein：Also include step after after the step S6
Suddenly：By display module show current tested LED charactrons whether be non-defective unit and defect type.
As described above, the full-automatic LED charactron photodetector system and its method of the present invention, with following beneficial effect
Really：
(1) the LED charactrons to be measured in material storage dish can be sent into detection module automatically；
(2) non-defective unit and different types of defective can be sorted automatically, defective is sorted to different storages
In container, non-defective unit is placed into discharge belt；
(3) detection of optical property and electrical property can be carried out to LED charactrons simultaneously automatically；
(4) thimble of adjustable spacing is driven by Z-direction mechanical arm, is realized under machine vision guide to any attitude device
Automatic butt, makes it possible that different types of LED charactrons realize efficient test；
(5) speed to the detection of the photoelectric properties of LED charactrons is fast, the degree of accuracy is high.
Brief description of the drawings
Fig. 1 is shown as the circuit theory schematic diagram of the full-automatic LED charactron photodetector system of the present invention；
Fig. 2 is shown as the side view structure of the automatic detection module of the full-automatic LED charactron photodetector system of the present invention
Schematic diagram；
Fig. 3 is shown as the structural representation of the automatic charging module of the present invention；
Fig. 4 is shown as the structural representation of the automatic detection module of the present invention；
Fig. 5 is shown as the flow chart of the full-automatic LED charactron photoelectric detecting method of the present invention.
Component label instructions
1 automatic charging module
11 material storage dishes
12 X-axis mechanical arms
13 Y-axis mechanical arms
2 automatic detection modules
21 clear glasses
22 X are to mechanical arm
23 Y-direction mechanical arms
24 Z-direction mechanical arms
25 driving sources contact module
251 thimbles
252 thimble spacing adjusting devices
The slideway in 26 adjustable broadbands
27 image collection modules
271 cameras
272 cameras
273 light sources
3 automatic blanking modules
31 sorting cylinders
32 defectives sort box
33 discharge belts
Embodiment
Illustrate embodiments of the present invention below by way of specific instantiation, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through specific realities different in addition
The mode of applying is embodied or practiced, the various details in this specification can also based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
It should be noted that the diagram provided in the present embodiment only illustrates the basic conception of the present invention in a schematic way,
Then only display is painted with relevant component in the present invention rather than according to component count, shape and the size during actual implementation in schema
System, it is actual when implementing, and kenel, quantity and the ratio of each component can be a kind of random change, and its assembly layout kenel also may be used
Can be increasingly complex.
Reference picture 1- Fig. 4, full-automatic LED charactron photodetector system of the invention includes automatic charging module 1, automatic
Detection module 2, automatic blanking module 3 and main control module.Automatic charging module 1, automatic detection module 2 and automatic blanking module 3
It is connected with main control module.
Automatic charging module 1 is used for the automatic charging for realizing tested LED charactrons, including material storage dish 11, X-axis mechanical arm 12
With Y-axis mechanical arm 13.
Material storage dish 11 is used to place tested LED charactrons in an orderly manner.Specifically, by a number of tested LED charactrons
Close according to ranks is placed on material storage dish, wherein, down, pin is upward on the surface of tested LED charactrons.
X-axis mechanical arm 12 is connected with main control module, under the control of main control module, promoting the storing positioned at feeding area
Disk 11 is moved in the X-axis.
Y-axis mechanical arm 13 is connected with main control module, under the control of main control module, promoting the storing positioned at feeding area
Disk 11 is moved up in Y-axis.
Specifically, X-axis mechanical arm 12 promotes the tested LED charactrons on material storage dish to be moved to X-direction using push rod thereon
It is dynamic, and the tested LED charactrons of the row of foremost one are moved on the flat board below Y-axis mechanical arm；Y-axis mechanical arm 13 is using thereon
Push rod promote flat board on tested LED charactrons enter clear glass 21 on test job position on.
Automatic detection module 2 be used for realize to be tested LED charactrons automatic optoelectronic detect, including clear glass 21, X to
Mechanical arm 22, Y-direction mechanical arm 23, Z-direction mechanical arm 24, driving source contact module 25, image collection module 27, image procossing mould
Block, electric performance test module and camera bellows.
X is connected to mechanical arm 22, Y-direction mechanical arm 23 and Z-direction mechanical arm 24 with main control module, for according to tested LED
The positional information of charactron, drives driving source contact module 25 to be in contact exactly with the pin of tested LED charactrons.
Wherein, positional information includes coordinate information etc..
Preferably, when tested LED charactrons are moved to 21 top of clear glass, the CCD camera below glass is shot
The image of tested LED charactrons, and accurately measurement is tested the location of LED charactrons information by image recognition processing.Position
Driving source above tested LED charactrons contacts module under drives of the X to mechanical arm 22 and Y-direction mechanical arm 23, and tested
The pin of LED charactrons is accurately aligned, and then driving source contacts module 25 under the control of Z-direction mechanical arm 24, is depressed into
The pin of tested LED charactrons, so that the pin of driving source contact module 25 and tested LED charactrons is closely connected.
Driving source contact module 25 is connected with Z-direction mechanical arm 24, is in contact exactly for the pin with tested LED charactrons.
Preferably, driving source contact module 25 includes thimble 251 and thimble spacing adjusting device 252.In the another of the present invention
In one preferred embodiment, driving source contact module can also use elastic module, and elastic module be connected with mechanical arm, for
The pin of tested LED charactrons is in contact.Specifically, elastic module can use elastic spring.
Preferably, automatic detection module also includes the slideway 26 of adjustable width, is arranged on clear glass 21, for controlling
System is placed on the placing range of the tested LED charactrons on clear glass 21.Specifically, it is tested the pin of LED charactrons upward
Closely, in the slideway for the adjustable width being placed on clear glass 21, and fitly put in order on the direction of traveling
Put.Wherein, the quantity for the tested LED charactrons being placed in the slideway 26 of adjustable width can be one or multiple.
Image collection module 27 is connected with main control module, the image information for obtaining tested LED charactrons.Specifically,
Image collection module 27 includes camera 271, camera lens 272 and light source 273.Wherein, camera is located at the lower section of clear glass 21, under
The image of LED charactrons is tested toward photographs.Preferably, camera uses CCD camera or CMOS cameras.
Image processing module is connected with image collection module 27 and main control module, before the electricity on tested LED charactrons,
Image information to the LED charactrons acquired in described image acquisition module is handled, and obtains the position of tested LED charactrons
Information；On tested LED charactrons after electricity, the image information to the LED charactrons acquired in described image acquisition module is carried out
Processing, obtains the optical performance information of tested LED charactrons.Wherein, optical performance information is equal including the brightness that LED charactrons light
Even property, uniformity of chromaticity, brightness stepping, colourity stepping, whether light leak, whether have impurity and to be that shell is no have the information such as cut.
Electric performance test module is connected with main control module, after the electricity on tested LED charactrons, obtains tested LED numbers
The electric property information of code pipe.Specifically, the forward voltage values of electric property information including LED charactrons, reverse leakage value, open
Road information, short circuit information.Generally, electric performance test module is co-located on one piece of pcb board with main control module.
Camera bellows is used to enclose full-automatic LED charactron photodetector system, to ensure that detection is not influenceed by ambient light.
Automatic blanking module 3, which is used to realize, has detected the automatic sortings of LED charactrons, if including several sorting cylinders,
Dry defective sorting box and discharge belt.
Sorting cylinder 31 is used to be sorted the LED charactrons detected on clear glass according to testing result.Wherein,
The LED charactrons that testing result includes having detected are non-defective unit, a class defective, two class defectives etc..
Defective sorting box 32 is used to deposit defective LED charactrons.
Discharge belt 33 is used to transmit the LED charactrons for being detected as non-defective unit.
Main control module is used for the operation for controlling whole full-automatic LED charactron photodetector system, and according to image procossing
The test result of module and electric performance test module, judge tested LED charactrons whether be non-defective unit and defective type.
Specifically, main control module carries out following control operation：
(1) operation of the X-axis mechanical arm and Y-axis mechanical arm of control automatic charging module.
(2) movements of the X to mechanical arm, Y-direction mechanical arm and Z-direction mechanical arm is controlled, tested LED charactrons is connect with driving source
Touch block carries out automatic optoelectronic detection after accurately docking, and realizes the pipeline system of automatic charging, automatic detection and automatic blanking
Synchronous to perform, i.e., while feeding working position feeding, test job position is detected, sorting work position carries out go-no-go.
(3) control electrical property measurement module obtains the electrical property information of tested LED charactrons.
(4) control image collection module obtains the image information of tested LED charactrons.In the present invention, image obtains mould
Block undertakes two parts function, and one is to shoot the placement location and angle for not driving the LED charactrons lighted on work top, with
It is sent to and the positional information that graphical analysis obtains tested LED charactrons is carried out in main control module, obtained positional information is accused
Know mechanical arm to control driving source to contact the pose adjustment of module；Two be to shoot tested LED charactrons to present when driving is lighted
Image, to carry out optical property analysis.
(5) movements of the X to mechanical arm, Y-direction mechanical arm and Z-direction mechanical arm is controlled, automatically to adjust driving source contact module
It is whole and to be depressed into pin to the position that be accurately aligned with tested LED charactrons pin, complete excitation and measuring system and tested
The electrical connection of LED charactrons.
(6) control picks system, and defective LED charactrons are stored in into corresponding defective sorts box, will be detected as good
The LED charactrons of product are sent to discharge belt.
Preferably, display module (not shown) is also included in the photodetector system of LED charactrons of the invention, with
Main control module is connected, for show current tested LED charactrons whether be non-defective unit and defect type.Specifically, display module
LED charactrons can be used, it would however also be possible to employ indicator lamp.When tested LED charactrons are non-defective unit, LED charactrons are without display, or indicate
Lamp is shown in green；When tested LED charactrons are defective, LED numeral methods defect type or indicator lamp are shown in red.
Specifically, reference picture 5, the detection method of full-automatic LED charactron photodetector system of the invention is as follows：
Step S1, by the digital pipe surfaces of tested LED down, pin be arranged closely in upward according to ranks on material storage dish, X
Shaft mechanical arm and Y-axis mechanical arm promote the tested LED charactrons on material storage dish to enter clear glass in X to Y-direction respectively
On test job position.
Wherein, material storage dish is placed in feeding area.
Preferably, the slideway of adjustable width is additionally provided with clear glass, to control the quilt being placed on clear glass
Survey the placing range of LED charactrons.Specifically, it is tested LED charactrons pins upward closely, is placed on clear glass
Adjustable width slideway in, and be neatly arranged in order on the direction of traveling.
Step S2, image collection module obtain the image information of tested LED charactrons, and main control module is according to the image information
Obtain the positional information of tested LED charactrons.
Specifically, the camera below clear glass shoots the image of tested LED charactrons.Main control module passes through certain
Image algorithm, draw the particular location of tested LED charactrons, and record the location information of LED charactrons.
Step S3, the positional information according to tested LED charactrons, X drive to mechanical arm, Y-direction mechanical arm and Z-direction mechanical arm
Driving source contact module is in contact with the pin of tested LED charactrons.
Specifically, under drives of the X to mechanical arm and Y-direction mechanical arm, it is digital that driving source contact module is moved to tested LED
The top of pipe, and be accurately aligned with the pin of tested LED charactrons, then under the control of Z-direction mechanical arm, driving source connects
Touch block is depressed into the pin of tested LED charactrons, so that the pin of driving source contact module and tested LED charactrons is carried out
Close connection.
Step S4, under the control of main control module, be tested electricity on LED charactrons, image capture module is obtained after upper electricity
The image information of tested LED charactrons；Image processing module is handled the image information of acquired LED charactrons, is obtained
Take the optical performance information of LED charactrons；Electric performance test module obtains the electric property information of tested LED charactrons.
Step S5, main control module judge tested according to the optical performance information and electric property information of tested LED charactrons
Whether LED charactrons are non-defective unit.
Step S6, the testing result according to tested LED charactrons, when new tested LED charactrons enter clear glass
Test job position on when, each sorting cylinder distinguishes the LED charactrons of the different testing results detected on clear glass
Sort out.
Wherein, defective LED charactrons are stored in corresponding lack by each sorting cylinder under the control of main control module
The product of falling into sorting box, discharge belt is sent to by the LED charactrons for being detected as non-defective unit.
After LED charactrons detection on current test job position is finished, automatic charging module proceeds feeding so that thoroughly
The LED charactrons not yet detected on bright glass are on current test job position, so as to carry out the complete of the LED charactrons of next round
Automatic optoelectronic is detected.It should be noted that in automatic charging module feeding, the automatic detection of LED charactrons can be realized simultaneously
And automatic blanking.
Preferably, in addition to by display module show current tested LED charactrons whether be non-defective unit and defect class
Type.Specifically, display module can use LED charactrons, it would however also be possible to employ indicator lamp.When tested LED charactrons are non-defective unit,
LED charactrons are shown in green without display, or indicator lamp；When tested LED charactrons are defective, LED numeral methods lack
Fall into type or indicator lamp is shown in red.
The acquisition of the optical performance information of LED charactrons is illustrated in detail below.
Brightness disproportionation, refers to that the average brightness deviation of all sections of some sections and this device on same device is more than
Certain numerical value.I.e. these sections are excessively bright or excessively dark.When detecting brightness disproportionation, in order to have certain with human eye vision
With degree, the comparison of brightness needs to follow certain strategy between pen section.This strategy includes：
A) between the pen section of different colours, without comparing；Only compare the inequality between same color；
B) between the pen section of different area, without comparing；Only compare the inequality between similar area section
C it is) insignificant using organoleptic effects to user, without comparing.For example：Specific pattern on Special digital pipe.
Judge during the brightness of LED charactrons, it is necessary to set the uneven shelves of detection according to the requirement to LED charactron qualities
Position parameter.The transformational relation of gear and luminance difference is as shown in table 1, can be represented with below equation：Luminance difference degree=gear *
5%.After the brightness ratio mean flow rate of some section is small or big, and luminance difference is more than set gear, just it is judged
For brightness disproportionation.
The relation of table 1, luminance difference and gear
| Gear value | Diversity factor |
| 1 | 5% |
| 2 | 10% |
| 3 | 15% |
| 4 | 20% |
| 5 | 25% |
| …… | Every grade of step-length 5% |
| 10 | 50% |
Colourity is uneven, refers to that the colourity on same device between different pen sections has deviation, and deviation is more than necessarily
Numerical value.As brightness contrast strategy, user can be contrasted identical by the packet situation of the standard picture section for changing non-defective unit
The chromatic value of color, similar area section.
When judging LED charactron colourities, in addition it is also necessary to the uneven shelves of detection are set according to the requirement to LED charactron qualities
Position parameter.As a rule, colourity includes the mode of three kinds of calibrations：1) angle；2) wavelength；3) chromaticity coordinates.The step-length of each way
It is as shown in table 2 with scope.
Table 2, colourity judge the relation of middle gear mode and step-length and scope
| Step-wise fashion | Gear number | Step-length |
| Angle | 1-180 | 1 degree |
| Wavelength | 1-40 | 1nm |
| Chromaticity coordinates | 0.01-1 | 0.01 |
Wherein, step-length refers to the minimum resolving accuracy that gear setting can reach, gear refers to that carrying out non-defective unit defective products sentences
Disconnected.By selecting a kind of step-wise fashion therein, and the gear value of correlation is set.When the colourity and average chrominance of some section
Between difference be more than after set gear, be judged as colourity uneven.
Light leak refers on same device that while some sections are lit, other sections are non-lit up.In this case
There is a situation where the brightness of non-lit up pen section beyond certain numerical value.This light leak is to light the saturating of pen section from neighbouring
Light.
Firstly the need of selection, which section will be lit.When the reduced value of some section is more than the corresponding number of set gear
During value, that is, think that this section has light leak.
Judge LED charactrons whether light leak when, it is necessary to set the gear of light leak according to the requirement to LED charactron qualities
Parameter.The brightness for contrasting non-lit up pen section is lit the brightness of pen section with other, when the reduced value of some section is more than set
When putting the corresponding numerical value of gear, that is, think that this section has light leak.
Impurity refers to there is debris in some section regions of LED charactrons.Basis is needed to want LED charactron qualities
Ask to set the gear parameter of defects inspecting.
Cut refers to there is the region being damaged on the housing of LED charactrons.When judging the cut of LED charactrons, it is necessary to
The gear parameter of scratch detection is set according to the requirement to LED charactron qualities.
In summary, full-automatic LED charactron photodetector system of the invention and its method can be automatically by material-storing boxs
Interior LED charactrons to be measured feeding detection module；Automatically non-defective unit and different types of defective can be sorted, defective
It is sorted in different accommodating containers, non-defective unit is placed into discharge belt；Automatically optics can be carried out to LED charactrons simultaneously
The detection of performance and electrical property is driven the thimble of adjustable spacing by mechanical arm, is realized under machine vision guide to any attitude device
The automatic butt of part, makes it possible that different types of LED charactrons realize efficient test；To the photoelectricity of LED charactrons
The speed of performance detection is fast, the degree of accuracy is high.So, the present invention effectively overcomes various shortcoming of the prior art and has height and produce
Industry value.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
1. a kind of full-automatic LED charactron photodetector system, it is characterised in that：Including automatic charging module, automatic detection mould
Block, automatic blanking module and main control module；
The automatic charging module is connected with the main control module, the automatic charging for realizing tested LED charactrons；
The automatic detection module is used to realize to be detected to the automatic optoelectronic for being tested LED charactrons, including clear glass, X are to machine
Tool arm, Y-direction mechanical arm, Z-direction mechanical arm, driving source contact module, image collection module, image processing module, electric performance test
Module and camera bellows；
The X is connected to mechanical arm, the Y-direction mechanical arm and the Z-direction mechanical arm with the main control module, for according to quilt
The positional information of LED charactrons is surveyed, drives the driving source contact module to be in contact with the pin of tested LED charactrons；
The driving source contact module is connected with the Z-direction mechanical arm, is in contact for the pin with tested LED charactrons；
Described image acquisition module is connected with main control module, the image information for obtaining tested LED charactrons；
Described image processing module is connected with described image acquisition module and the main control module, in tested LED charactrons
Before upper electricity, the image information to the LED charactrons acquired in described image acquisition module is handled, and obtains tested LED digital
The positional information of pipe；On tested LED charactrons after electricity, to the image of the LED charactrons acquired in described image acquisition module
Information is handled, and obtains the optical performance information of tested LED charactrons；
The electric performance test module is connected with the main control module, after the electricity on tested LED charactrons, obtains tested
The electric property information of LED charactrons；
The camera bellows is used to enclose full-automatic LED charactron photodetector system；
The automatic blanking module is connected with the main control module, and the automatic sorting of LED charactrons has been detected for realizing；
The main control module is used for the operation for controlling whole full-automatic LED charactron photodetector system, and according to image procossing
The test result of module and electric performance test module, judge tested LED charactrons whether be non-defective unit and defective type.
2. full-automatic LED charactron photodetector system according to claim 1, it is characterised in that：The automatic charging
Module includes material storage dish, X-axis mechanical arm and Y-axis mechanical arm；The material storage dish is used to place tested LED charactrons in an orderly manner；Institute
X-axis mechanical arm is stated with the main control module to be connected, under the control of the main control module, promote device on material storage dish to
X-direction is moved, and the tested LED charactrons of the row of foremost one are moved on the flat board below Y-axis mechanical arm；The Y-axis machinery
Arm is connected with main control module, under the control of the main control module, promoting the tested LED charactrons on flat board to enter transparent
Test job position on glass.
3. full-automatic LED charactron photodetector system according to claim 1, it is characterised in that：The automatic blanking
Module includes several sorting cylinders, several defectives sorting box and discharge belt；The sorting cylinder is used for will be transparent
The LED charactrons detected on glass are sorted according to testing result；The defective sorting box is used to deposit defective
LED charactrons；The discharge belt is used to transmit the LED charactrons for being detected as non-defective unit.
4. full-automatic LED charactron photodetector system according to claim 1, it is characterised in that：The automatic detection
Module also includes the slideway of adjustable width, is arranged on the clear glass, for the quilt for controlling to be placed on clear glass
Survey the placing range of LED charactrons.
5. full-automatic LED charactron photodetector system according to claim 1, it is characterised in that：The driving source connects
Touch block includes thimble and thimble spacing adjusting device.
6. full-automatic LED charactron photodetector system according to claim 1, it is characterised in that：The optical property
Information include LED charactrons light brightness uniformity, uniformity of chromaticity, brightness stepping, colourity stepping, whether light leak, whether
Have whether impurity and shell have cut.
7. full-automatic LED charactron photodetector system according to claim 1, it is characterised in that：The electric property
Information includes the forward voltage values, reverse leakage value, open a way information, short circuit information of LED charactrons.
8. full-automatic LED charactron photodetector system according to claim 1, it is characterised in that：Also include display mould
Block, the display module is connected with main control module, for show current tested LED charactrons whether be non-defective unit and defect class
Type.
9. a kind of detection method of full-automatic LED charactron photodetector system according to one of claim 1-8, it is special
Levy and be：
The automatic charging module includes material storage dish, X-axis mechanical arm and Y-axis mechanical arm；The automatic blanking module includes some
Individual sorting cylinder；
The detection method comprises the following steps：
Step S1, by the digital pipe surfaces of tested LED down, pin be arranged closely in upward according to ranks on material storage dish, X-axis machine
Tool arm and Y-axis mechanical arm promote the tested LED charactrons on material storage dish to enter the test of clear glass in X to Y-direction respectively
On working position；
Step S2, image collection module obtain the image information of tested LED charactrons, and main control module is according to the figure before upper electricity
As acquisition of information is tested the positional information of LED charactrons；
Step S3, the positional information according to tested LED charactrons, X drive to mechanical arm, Y-direction mechanical arm and Z-direction mechanical arm and encouraged
Source contact module is in contact with the pin of tested LED charactrons；
Step S4, under the control of main control module, be tested electricity on LED charactrons, image collection module obtains tested after upper electricity
The image information of LED charactrons；Image processing module to acquired LED charactrons it is upper electricity after image information at
Reason, obtains the optical performance information of tested LED charactrons；Electric performance test module obtains the electric property of tested LED charactrons
Information；
Step S5, main control module judge tested LED numbers according to the optical performance information and electric property information of tested LED charactrons
Whether code pipe is non-defective unit；
Step S6, the testing result according to tested LED charactrons, when new tested LED charactrons enter the survey of clear glass
When trying on working position, each sorting cylinder sorts the LED charactrons of the different testing results detected on clear glass respectively
Out.
10. detection method according to claim 9, it is characterised in that：Also include step after the step S6：Pass through display
Module show current tested LED charactrons whether be non-defective unit and defect type.
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| CN105548850B (en) | 2018-04-17 |
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