CN202838905U - General test apparatus for LED display module group - Google Patents
General test apparatus for LED display module group Download PDFInfo
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- CN202838905U CN202838905U CN 201220446994 CN201220446994U CN202838905U CN 202838905 U CN202838905 U CN 202838905U CN 201220446994 CN201220446994 CN 201220446994 CN 201220446994 U CN201220446994 U CN 201220446994U CN 202838905 U CN202838905 U CN 202838905U
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Abstract
The utility model discloses a general test apparatus for an LED display module group, comprising the a processor used for data operation and processing, a memory used for storing a module group to be tested, a display unit used for displaying a test result and an interface unit used for data communication with the exterior. The memory, the display unit and the interface unit are both connected with the processor. According to the general test apparatus for an LED display module group provided in the utility model, a lot of LED display module groups on the production line can be tested one by one, the efficiency is high, the reliability is strong, the test efficiency and test accuracy on the production line are substantially raised, the test requirement of batch production is satisfied, the general test apparatus for an LED display module group is easy to use, the automation degree is high, no manual intervention is required in the test process, and the general test apparatus for an LED display module group is simple, convenient and fast.
Description
Technical field
The utility model relates to LED display technique field, is specifically related to a kind of LED and shows the module universal testing device.
Background technology
In the last few years, the development of LED display technique was very fast, and the application of LED display is more and more, and it is very crucial therefore how to improve the efficient of producing and testing.In present stage, LED shows that the means of testing of module is very limited, generally all be by functional test, be about to LED to be detected and show that module links to each other with proving installation, by the test pictures under displaying video image and the various different mode, utilize the demonstration situation of naked eyes range estimation module, observe and judge the bad point of module with this.If there is bad point, judge that according to the bad point situation LED lamp point damages or driving chip pin rosin joint again, or be other hardware fault.In test process, rely on tester's experience to judge various fault and carry out reparation in addition do not have effective test and localization of fault and investigation means fully.
Present method of testing can satisfy the demand of research and development and short run trial-production etc. substantially, but then has very large drawback in the test of LED demonstration module mass production, even can not satisfy the demands fully.At first, test speed is slow, and testing efficiency is low.Because test R, G, B(red, green, blue) several different LED pixels, so also will correspondingly show different test pictures or video image, all picture displies are complete, need the cost regular hour, testing efficiency is very low.Secondly, the observation test picture relies on manually-operated fully, relies on naked eyes to be judged, after a period of time, is easy to cause visual fatigue, cause the undetected or false retrieval of fault, and the fault that is invisible to the naked eye can't locate and investigate also.At last, there are not effective localization of fault means, the tester's that places one's entire reliance upon micro-judgment, the localization of fault reliability is not high, and inefficiency.
In sum, present LED shows the testing requirement when module testing method can not satisfy batch production fully, needs to improve.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of LED and shows the module universal testing device, solves present LED and shows that module adopts functional test, can not satisfy the problem of the test needs when producing in enormous quantities.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
LED shows the module universal testing device, comprising: be used for carrying out data operation and processing processor, be used for storing module configuration parameter to be measured storer, be used for the display unit that shows test results and for carrying out the interface unit of data communication with the external world; Described storer, display unit and interface unit all are connected with processor.
In the preferred technical scheme, described processor is FPGA(Field-Programmable Gate Array field programmable gate array).
In the preferred technical scheme, described display unit is LED light.
In the preferred technical scheme, described storer is the FLASH flash chip.
In the further preferred technical scheme, described interface unit comprises: be used for and upper machine communication, with the network interface of the described configuration parameter that obtains module to be measured, and be used for the cable socket that is connected with module to be measured, described network interface and cable socket all are connected with processor.
The beneficial effects of the utility model are:
Because LED shows the module universal testing device and comprises: be used for carrying out data operation and processing processor, be used for storing module configuration parameter to be measured storer, be used for the display unit that shows test results and for carrying out the interface unit of data communication with the external world; During test, connect LED to be measured by interface unit first and show module, then processor produces and sends one group of test data and shows module to LED, and accept LED demonstration module and return next feedback data, configuration parameter in the combined memory carries out computing to feedback data again, can draw tested LED and whether show module by test, and the result is shown by display unit.This device can be tested a large amount of LED demonstration modules on production line one by one, efficient is high, reliability is strong, can carry out fast and effectively the mass test that LED shows module, testing efficiency and the test accuracy of production line have greatly been improved, the mass production that shows module for LED provides a kind of effective means of testing, the testing requirement when being enough to satisfy batch production; And this LED demonstration module universal testing device is simple and easy to use, automaticity is high, and test process does not need manual intervention, and is simple, convenient, fast.
Below in conjunction with accompanying drawing the utility model is described in further detail.
Description of drawings
Fig. 1 is the schematic block circuit diagram that the utility model embodiment LED shows the module universal testing device;
Fig. 2 is the workflow diagram that the utility model embodiment LED shows the module universal testing device.
Embodiment
LED that this embodiment provides shows the module universal testing device as shown in Figure 1, comprising: be used for carrying out data operation and processing processor, be used for storing module configuration parameter to be measured storer, be used for the display unit that shows test results and for carrying out the interface unit of data communication with the external world; Described storer, display unit and interface unit all are connected with processor.Show the module universal testing device by this LED, can carry out fast and effectively the mass test that LED shows module, greatly improved testing efficiency and the test accuracy of production line, shown that for LED the mass production of module provides a kind of effective means of testing.And this LED demonstration module universal testing device is simple and easy to use, automaticity is high, and test process does not need manual intervention, and is simple, convenient, fast.
In the preferred technical scheme, described processor is FPGA.FPGA is the product that further develops on the basis of the programming devices such as PAL, GAL, CPLD, it occurs as a kind of semi-custom circuit in special IC (ASIC) field, both solve the deficiency of custom circuit, overcome again the limited shortcoming of original programming device gate circuit number.This universal test device adopts FPGA as processor, debugs convenient, fastly, has shortened the construction cycle, has reduced cost of development.Certainly also can adopt the processors such as single-chip microcomputer according to actual conditions, but adopt in this application FPGA particularly suitable as processor, the FPGA Design of Synchronization Technology has guaranteed very high accuracy, and test result reliability is high.
In the preferred technical scheme, described display unit is LED light.Adopt LED light with low cost as display unit, reliable operation.Can certainly adopt charactron even liquid crystal display etc. to make display unit, but too large necessity of nothing among the application.LED light is the display operation process both, shows again the test result of LED module, and is both directly perceived, accelerated again test speed, improved testing efficiency.
In the preferred technical scheme, described storer is the FLASH flash chip.FLASH flash chip reliable operation, and the life-span is very long, is suitable as very much the application's storer.
Further in the preferred technical scheme, described interface unit comprises: be used for and upper machine communication, obtaining the network interface of the required configuration parameter of module to be measured, and be used for the cable socket that is connected with module to be measured, described network interface and cable socket all are connected with processor.Show module if only test a kind of LED, the configuration parameter of this module to be measured can be pre-written in the storer by network interface, do not need the communications such as network interface and host computer in the test.Because be provided with network interface, the LED that goes for multiple different size shows the module test, test is front by host computer and network interface, LED to be measured is shown that the configuration parameter of module is issued in the storer of proving installation to be preserved, can break away from host computer, and connect LED to be measured by cable socket and show that module tested.Cooperate the PC configuration parameter, the LED of embodiment shows that the module universal testing device goes for the LED demonstration module of nearly all model, has very strong versatility.
The LED demonstration module universal testing device of this embodiment can be made a test card in form, when its core component adopts FPGA, the FLASH storer also is used for preserving the FPGA program except being used for preserving the configuration parameter, LED light comprises red light and green light, red light represent the test do not pass through, green light represent the test pass through, be easily understood.The LED of this embodiment shows that the module universal testing apparatus structure is simple, easy to operate, can accurately and reliably detect the open-circuit condition information that LED shows LED lamp point on the module, be very easy to the mass test on the LED demonstration module production line.
Preparation before the test: the configuration parameter that at first by host computer (computing machine) LED to be tested is shown module, such as the line number of module, columns, module resolution (col width x is capable high), take out point mode, scan mode etc., be handed down to proving installation through network interface, and be kept in its storer, parameter just can begin to have tested after preserving and finishing, and need not PC during test.
Test connects: LED to be measured is shown that module is connected to by winding displacement on the cable socket of proving installation, then can switch on and test.Certainly in fact also can after energising, connect module to be measured, that is to say that cable socket can hot plug, but in possible situation or should avoid hot plug as far as possible.
Concrete testing process is as follows as shown in Figure 2:
A, initialization: proving installation powers on after the operation, FPGA at first reading and saving externally the module parameter in the FLASH storer is to finish initialization, this moment, LED light was shown as about 2 seconds time of quick-flashing light.
B, loop the test and show test results:
B1, obtain feedback data: after initialization is finished, processor meeting cycle detection cable socket, in case detect and accessed module to be measured on the cable socket, then send one group of test data from this module to be measured of trend, and the feedback data returned of this module to be measured of automatic reception.
B2, draw test result: processor is made relatively according to this feedback data of obtaining and being judged, draws test result.Such as, for the module to be measured of certain model, if having ' 0 ' in the feedback data, then showing has the LED of open circuit lamp on this module, thereby draws the not conclusion by testing of this module; If feedback data all is ' 1 ', think that then this module is by test.
B3, show test results: the test result that demonstrates current module by display unit.Such as, if module to be measured passes through test, then the green LED pilot lamp as display unit is lit; If by test, then the red LED pilot lamp as display unit is not lit module to be measured.
Above-mentioned testing process loops, and can test one by one each module to be measured.The operator only need to take off rear the placement respectively or mark with current test module according to the color of pilot lamp, then changes next module to be measured, can carry out the next round test, thereby can easily carry out efficiently the batch testing of module.Certainly, display unit in fact also can be replaced with phonation unit, such as when test by the time send a kind of sound, test not by the time send another kind of sound (perhaps " not sounding "), as long as allow the tester can clearly know test result.
In whole operating process, each operation is done the demonstration that does well by LED light, and each state demonstration simply and is intuitively indicated and is guided the tester to carry out concrete operation, and clearly demonstrate test result all because of the difference difference of concrete operations.This proving installation can accurately and reliably detect the open-circuit condition information that LED shows LED lamp point on the module, and finally demonstrate test result by LED light by simple pointwise open circuit trace routine.Test behind each replacement module and automatically carry out, need not manual intervention.Required module configuration parameter pre-save externally in the FLASH storer and automatically read by FPGA, is very easy to the mass test that different LED shows module when power-up initializing.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that implementation of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection domain of the present utility model.
Claims (5)
1.LED show the module universal testing device, it is characterized in that this LED shows that module universal testing device comprises: be used for carrying out data operation and processing processor, be used for storing module configuration parameter to be measured storer, be used for the display unit that shows test results and for carrying out the interface unit of data communication with the external world; Described storer, display unit and interface unit all are connected with processor.
2. LED as claimed in claim 1 shows the module universal testing device, it is characterized in that described processor is FPGA.
3. LED as claimed in claim 1 shows the module universal testing device, it is characterized in that described display unit is LED light.
4. LED as claimed in claim 1 shows the module universal testing device, it is characterized in that described storer is the FLASH flash chip.
5. show the module universal testing device such as the described LED of any one in the claim 1 to 4, it is characterized in that, described interface unit comprises: be used for and upper machine communication, network interface with the described configuration parameter that obtains module to be measured, and being used for the cable socket be connected with module to be measured, described network interface and cable socket all are connected with processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220446994 CN202838905U (en) | 2012-09-04 | 2012-09-04 | General test apparatus for LED display module group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220446994 CN202838905U (en) | 2012-09-04 | 2012-09-04 | General test apparatus for LED display module group |
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|---|---|
| CN202838905U true CN202838905U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220446994 Expired - Fee Related CN202838905U (en) | 2012-09-04 | 2012-09-04 | General test apparatus for LED display module group |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995765A (en) * | 2013-12-09 | 2014-08-20 | 深圳市立鼎光电技术有限公司 | LED control card testing system and method |
| CN105161038A (en) * | 2015-09-14 | 2015-12-16 | 苏州市新瑞奇节电科技有限公司 | LED module group test circuit |
| CN107492332A (en) * | 2017-08-10 | 2017-12-19 | 捷星显示科技（福建）有限公司 | A kind of lcd productive line test result store method |
-
2012
- 2012-09-04 CN CN 201220446994 patent/CN202838905U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995765A (en) * | 2013-12-09 | 2014-08-20 | 深圳市立鼎光电技术有限公司 | LED control card testing system and method |
| CN105161038A (en) * | 2015-09-14 | 2015-12-16 | 苏州市新瑞奇节电科技有限公司 | LED module group test circuit |
| CN107492332A (en) * | 2017-08-10 | 2017-12-19 | 捷星显示科技（福建）有限公司 | A kind of lcd productive line test result store method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130327 Termination date: 20150904 |
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| EXPY | Termination of patent right or utility model |