CN104089758A - LED product quality detecting and classifying system and method - Google Patents
LED product quality detecting and classifying system and method Download PDFInfo
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- CN104089758A CN104089758A CN201410315880.1A CN201410315880A CN104089758A CN 104089758 A CN104089758 A CN 104089758A CN 201410315880 A CN201410315880 A CN 201410315880A CN 104089758 A CN104089758 A CN 104089758A
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Abstract
The invention discloses an LED product quality detecting and classifying system and method. The system comprises a switch, a sample power source, a sample table, a spectrograph and a computer; the switch is connected with the sample power source and the computer; the sample power source comprises a direct current power source and an alternating current power source; the output end of the sample power source is connected with the input end of the sample table; the sample table comprises a chip sample table and a lamp sample table; the output end of the direct current power source is connected with the chip sample table; the output end of the alternating current power source is connected with the lamp sample table; the spectrograph is a fiber optic spectrometer, and a fiber-optics probe of the spectrograph aligns at the sample table; the output end of the spectrograph is connected with the computer; the output end of the computer is connected with the sample power source. The different power sources are designed, the constant direct current power source supplies power to an LED chip, a relay of the alternating current power source controls on-off of an LED lamp, and therefore the LED chip and the LED lamp can be effectively and rapidly detected, and the system is reasonable in design, practicable, convenient to use, high in detecting speed, and capable of greatly shortening the rejecting time of bad products in a large number of chips and lamps.
Description
Technical field
The present invention relates to a kind of LED product quality Fast Classification system and detection method thereof, relate in particular to a kind of can the while carrying out the system of fast qualitative detection and detect sorting technique for the quality of LED chip in enormous quantities or light fixture.
Background technology
Light emitting diode is referred to as LED, and its appearance is described as the revolution that the mankind are thrown light in history, is the trend of future development.LED product is divided into LED chip and LED light fixture, and the quality control of LED chip and light fixture and technology stability are subject to the impact of all conditions and factor, and the careless omission of any one link all can cause product fraction defective to raise rapidly, and is difficult to timely discovery.Therefore effective, convenient, the quality of promptly measuring LED chip in enormous quantities and light fixture, rejects defect ware wherein rapidly, and for Reducing Cost in Enterprises, the aspect such as improve the quality of products all tool is of great significance.And existing LED product product quality pick-up unit mostly exists the problems such as complex structure, test is slow, test result is inaccurate, and can only detect LED chip or LED light fixture, there is no versatility, increase the cost detecting.
Summary of the invention
First object of the present invention is to solve the shortcoming that legacy equipment cannot be rejected defect ware in a large amount of LED chips or light fixture and versatility useless fast, provides a kind of and can detect the fast detecting categorizing system that LED chip can detect again the LED product quality of LED light fixture.
The technical scheme that realizes first object of the present invention is that a kind of LED product quality detects categorizing system, comprises switch, sample power supply, sample stage, spectrometer and computer; Described switch connects sample power supply and computer; Described sample power supply comprises direct supply and AC power; The output terminal of described sample power supply connects the input end of sample stage; Described sample stage comprises chip sample platform and light fixture sample stage; The output terminal of described direct supply connects chip sample stage; The output terminal of described AC power connects light fixture sample stage; Described spectrometer is fiber spectrometer, and its fibre-optical probe is aimed at sample stage; The output terminal of described spectrometer connects computer; The output terminal of described computer connects sample power supply.
Described spectrometer also comprises diaphragm.
Described direct supply is programmable DC power supply; Described AC power comprises microprocessor and USB relay, and described microprocessor is controlled the break-make of USB relay, and the output terminal of described USB relay connects light fixture sample stage.
Described chip sample platform and light fixture sample stage all have a plurality of.
Described sample stage bottom arranges travelling belt.
Second object of the present invention is to provide the detection sorting technique that a kind of LED product quality detects categorizing system, and the method can fast and effeciently detect online and classify LED product.
The technical scheme that realizes second object of the present invention is the detection sorting technique that a kind of LED product quality detects categorizing system, comprises switch, sample power supply, sample stage, spectrometer and computer; Described sample power supply comprises programmable direct supply and AC power; Described sample stage comprises chip sample platform and light fixture sample stage; Described switch connects computer, direct supply and AC power simultaneously; Described computer connects direct supply, AC power and spectrometer simultaneously; Described direct supply is controlled the steady current of the different sizes of output by computer; ; Described AC power comprises microprocessor and USB relay, and described computer is controlled microprocessor and then controlled the break-make of USB relay; Described spectrometer is fiber spectrometer, and its fibre-optical probe is aimed at chip sample stage or light fixture sample stage, gathers spectral information and transfers to computer;
Its method that detects classification is:
Step 1: sample is placed on sample stage;
Step 2: select per sample testing software, the current/voltage of input sample and the numerical parameter of distinguishing product hierarchy;
Step 3: start test, sample power supply is powered to sample, and sample is lighted; Synchronously, spectrometer is started working, by the time interval synchronously collected specimens spectroscopic data and be transferred to computer; Gather and finish, close sample power supply, sample extinguishes;
Step 4: computer computational analysis spectroscopic data, with the standard comparison of the differentiation product hierarchy of inputting in step 2, obtains the quality grade of this sample;
Step 5: take off test sample product, change fresh sample, repeating step one is to step 4.
In described step 1, if sample is LED chip, sample is placed on to chip sample platform, the input end of chip sample platform is connected with direct supply; Institute's sample is LED light fixture, and sample is placed on to light fixture sample stage, and the input end of light fixture sample stage is connected with AC power; In described step 2, if sample is LED chip, select DC test software; If sample is LED light fixture, select alternating-current measurement software.
In described step 2, the parameter of distinguishing product hierarchy is the size of peak wavelength shift amount; In described step 4, the peak wavelength of the spectroscopic data of computer calculation procedure three tests, and peak wavelength and the time of lighting are carried out to exponential function matching, calculate sample and be lit instantaneous and test the peak wavelength shift amount while finishing, the grade interval that the step 2 falling into according to the size of peak wavelength shift amount is set carries out classification to sample.
Described spectrometer comprises diaphragm; In described step 4, if the peak wavelength calculating is too small or excessive, retest after regulating diaphragm perforate size, until peak wavelength is in normal range; In described step 5, when same batch of sample of test, no longer regulate diaphragm.
In described step 3, when a sample is tested, with sample stage, clamp next testing sample.
Adopted technique scheme, the present invention has following positive effect: (1) the present invention takes into account the detection of LED chip and LED light fixture, not only design different sample stages and clamp sample, also design different power supplys, constant current direct supply is LED chip power supply, relay is controlled the break-make of LED light fixture, therefore the present invention can realize effectively detecting fast LED chip and LED light fixture, system is reasonable, practical and convenient, detection speed piece, can greatly shorten rejecting time of bad product in chip in enormous quantities and light fixture.
(2) the present invention adopts non-contact measurement, and test sample is not produced to any destruction, therefore can guarantee test result accurate and effective.
(3) the present invention has a plurality of chip sample platforms and light fixture sample stage, can adapt to all on the market LED chips and light fixture, range of application is wide, can utilize test duration clamping sample simultaneously, after having tested, can replace rapidly current sample stage, according to same method of testing, carry out the test of next sample, greatly improve testing efficiency.
(4) sample stage of the present invention bottom arranges travelling belt, can form streamline and detect, and further promotes detection efficiency.
(5) detection method of the present invention is simple, easy to implement, and testing result is accurate.
Accompanying drawing explanation
For content of the present invention is more easily expressly understood, according to specific embodiment also by reference to the accompanying drawings, the present invention is further detailed explanation, wherein below
Fig. 1 is the theory diagram of system of the present invention.
Fig. 2 is the process flow diagram of method of the present invention.
Attached number in the figure is:
Switch 1, sample power supply 2, direct supply 21, AC power 22, sample stage 3, chip sample platform 31, light fixture sample stage 32, spectrometer 4, computer 5.
Embodiment
(embodiment 1)
See Fig. 1, the LED product quality of the present embodiment detects categorizing system, comprises switch 1, sample power supply 2, sample stage 3, spectrometer 4 and computer 5; Switch 1 connects sample power supply 2 and computer 5; Sample power supply 2 comprises programmable direct supply 21 and AC power 22; The output terminal of sample power supply 2 connects the input end of sample stage 3; Sample stage 3 comprises a plurality of chip sample platforms 31 and a plurality of light fixture sample stage 32; The output terminal of direct supply 21 connects chip sample stage 31; ; AC power 22 comprises microprocessor and USB relay, and microprocessor is controlled the break-make of USB relay, and the output terminal of USB relay connects light fixture sample stage 32, and microprocessor is selected STM32; Spectrometer 4 is fiber spectrometer, and its fibre-optical probe is aimed at sample stage 3, and spectrometer 4 is provided with diaphragm; The output terminal of spectrometer 4 connects computer 5; The output terminal of computer 5 connects sample power supply 2.Chip sample platform 31 can clamp rapidly supporting with it LED chip, and can carry out quick electricity connection with programmable direct supply 21 after being placed on appointed area, by computer 5, control programmable direct supply 21 and export the steady current matching with LED chip, in order to light LED chip.Light fixture sample stage 32 can clamp rapidly with it supporting LED light fixture, and can carry out quick electricity connection with USB relay after being placed on appointed area, can control USB relay by computer 5 and realize energising or power-off, with safety, lights LED light fixture.
See Fig. 2, its method that detects classification is:
Step 1: alignment probe sample stage 3 central authorities of spectrometer 4, are fixed on sample stage 3 central authorities by sample, the both positive and negative polarity good contact of the both positive and negative polarity of sample and sample stage 3 output terminals; If sample is LED chip, sample is placed on to chip sample platform 31, the input end of chip sample platform 31 is connected with direct supply 21; Institute's sample is LED light fixture, and sample is placed on to light fixture sample stage 32, and the input end of light fixture sample stage 32 is connected with USB relay; Under the probe of spectrometer 3, there is a diaphragm, regulate diaphragm perforate size can control the luminous flux that enters probe; Before test, regulate to the luminous intensity property estimated per sample the perforate size of diaphragm;
Step 2: select per sample testing software, the current/voltage of input sample and the numerical parameter of distinguishing product hierarchy; If sample is LED chip, select DC test software; If sample is LED light fixture, select alternating-current measurement software; The parameter of distinguishing product hierarchy is the size of peak wavelength shift amount;
Step 3: start test, sample power supply 2 is to sample power supply, and sample is lighted; Synchronously, spectrometer 4 is started working, by the time interval synchronously collected specimens spectroscopic data and be transferred to computer 5; Acquisition time is 10 seconds, gathers and finishes, and closes sample power supply 2, and sample extinguishes; When a sample is tested, with sample stage 3, clamp next testing sample;
Step 4: the peak wavelength of the spectroscopic data of computer 5 calculation procedure three tests, and peak wavelength and the time of lighting are carried out to exponential function matching, calculate sample and be lit instantaneous and test the peak wavelength shift amount while finishing, the grade interval that the step 2 falling into according to the size of peak wavelength shift amount is set carries out classification to sample; If the peak wavelength calculating is too small or excessive, retest after regulating diaphragm perforate size, until peak wavelength is in normal range;
Step 5: take off test sample product, change fresh sample, repeating step one is to step 4.For guaranteeing effectiveness of classification, during all the other sample tests of same batch, can not regulate again diaphragm.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. LED product quality detects a categorizing system, it is characterized in that: comprise switch (1), sample power supply (2), sample stage (3), spectrometer (4) and computer (5); Described switch (1) connects sample power supply (2) and computer (5); Described sample power supply (2) comprises direct supply (21) and AC power (22); The output terminal of described sample power supply (2) connects the input end of sample stage (3); Described sample stage (3) comprises chip sample platform (31) and light fixture sample stage (32); The output terminal of described direct supply (21) connects chip sample stage (31); The output terminal of described AC power (22) connects light fixture sample stage (32); Described spectrometer (4) is fiber spectrometer, and its fibre-optical probe is aimed at sample stage (3); The output terminal of described spectrometer (4) connects computer (5); The output terminal of described computer (5) connects sample power supply (2).
2. LED product quality according to claim 1 detects categorizing system, it is characterized in that: described spectrometer (4) also comprises diaphragm.
3. LED product quality according to claim 1 and 2 detects categorizing system, it is characterized in that: described direct supply (21) is programmable DC power supply; Described AC power (22) comprises microprocessor and USB relay, and described microprocessor is controlled the break-make of USB relay, and the output terminal of described USB relay connects light fixture sample stage (32).
4. LED product quality according to claim 3 detects categorizing system, it is characterized in that: described chip sample platform (31) and light fixture sample stage (32) all have a plurality of.
5. LED product quality according to claim 4 detects categorizing system, it is characterized in that: described sample stage (3) bottom arranges travelling belt.
6. LED product quality detects a detection sorting technique for categorizing system, it is characterized in that: comprise switch (1), sample power supply (2), sample stage (3), spectrometer (4) and computer (5); Described sample power supply (2) comprises programmable direct supply (21) and AC power (22); Described sample stage (3) comprises chip sample platform (31) and light fixture sample stage (32); Described switch (1) connects computer (5), direct supply (21) and AC power (22) simultaneously; Described computer (5) connects direct supply (21), AC power (22) and spectrometer (4) simultaneously; Described direct supply (21) is controlled the steady current of the different sizes of output by computer (5); Described AC power (22) comprises microprocessor and USB relay, and described computer (5) is controlled microprocessor and then controlled USB relay (22) energising or power-off; Described spectrometer (4) is fiber spectrometer, and its fibre-optical probe is aimed at chip sample stage (31) or light fixture sample stage (32), gathers spectral information and transfers to computer (5);
Its method that detects classification is:
Step 1: sample is placed on sample stage (3);
Step 2: select per sample testing software, the current/voltage of input sample and the numerical parameter of distinguishing product hierarchy;
Step 3: start test, sample power supply (2) is to sample power supply, and sample is lighted; Synchronously, spectrometer (4) is started working, by the time interval synchronously collected specimens spectroscopic data and be transferred to computer (5); Gather and finish, close sample power supply (2), sample extinguishes;
Step 4: computer (5) computational analysis spectroscopic data, with the standard comparison of the differentiation product hierarchy of inputting in step 2, obtains the quality grade of this sample;
Step 5: take off test sample product, change fresh sample, repeating step one is to step 4.
7. LED product quality according to claim 6 detects the detection sorting technique of categorizing system, it is characterized in that: in described step 1, if sample is LED chip, sample is placed on to chip sample platform (31), the input end of chip sample platform (31) is connected with direct supply (21); Institute's sample is LED light fixture, and sample is placed on to light fixture sample stage (32), and the input end of light fixture sample stage (32) is connected with USB relay; In described step 2, if sample is LED chip, select DC test software; If sample is LED light fixture, select alternating-current measurement software.
8. LED product quality according to claim 7 detects the detection sorting technique of categorizing system, it is characterized in that: in described step 2, the parameter of distinguishing product hierarchy is the size of peak wavelength shift amount; In described step 4, the peak wavelength of the spectroscopic data of computer (5) calculation procedure three tests, and peak wavelength and the time of lighting are carried out to exponential function matching, calculate sample and be lit instantaneous and test the peak wavelength shift amount while finishing, the grade interval that the step 2 falling into according to the size of peak wavelength shift amount is set carries out classification to sample.
9. LED product quality according to claim 8 detects the detection sorting technique of categorizing system, it is characterized in that: described spectrometer (4) comprises diaphragm; In described step 4, if the peak wavelength calculating is too small or excessive, retest after regulating diaphragm perforate size, until peak wavelength is in normal range; In described step 5, when same batch of sample of test, no longer regulate diaphragm.
10. LED product quality according to claim 9 detects the detection sorting technique of categorizing system, it is characterized in that: in described step 3, when a sample is tested, with sample stage (3), clamp next testing sample.
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| CN115792473A (en) * | 2023-01-29 | 2023-03-14 | 惠州威尔高电子有限公司 | Quality detection method for MiniLED sheet production process |
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