CN103997644B - Liquid crystal TV set controls mainboard automatic testing equipment - Google Patents
Liquid crystal TV set controls mainboard automatic testing equipment Download PDFInfo
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- CN103997644B CN103997644B CN201410248065.8A CN201410248065A CN103997644B CN 103997644 B CN103997644 B CN 103997644B CN 201410248065 A CN201410248065 A CN 201410248065A CN 103997644 B CN103997644 B CN 103997644B
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- 238000012360 testing method Methods 0.000 title claims abstract description 129
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 10
- 238000004458 analytical method Methods 0.000 claims description 4
- 230000010365 information processing Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000004821 Contact adhesive Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
- Liquid Crystal Display Device Control (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a kind of liquid crystal TV set and control mainboard automatic testing equipment, comprise testing jig, the test platform of testing jig is horizontally installed with needle-bar plate, needle-bar plate is provided with some thimbles; The side of test platform is provided with test controller, test controller comprises ADC acquisition module, message processing module, signal conversion module and display screen, be positioned in the testing jig frame above test platform and be also provided with the test baffle being parallel to needle-bar plate, the upper methods, rack of test baffle is provided with cylinder, test platform is provided with push button and control circuit; Described control circuit comprises relay and electromagnetically operated valve, and the control end of electromagnetically operated valve connects the controlled end of cylinder, and electromagnetically operated valve is also connected with message processing module output.The present invention achieves by automatic test the object that a people can operate multiple stage testing jig, without the need to manual intervention in test process, judges whether product meets standard-required by computer, improves efficiency and the accuracy rate of test.
Description
Technical field
The present invention relates to a kind of testing apparatus, particularly a kind of testing apparatus controlling mainboard for testing liquid crystal TV set.
Background technology
Controlling mainboard is one of critical piece of liquid crystal display and liquid crystal TV set, and the performance controlling mainboard is one of important decisive factor determining liquid crystal display and liquid crystal TV set.Need to test its performance, to ensure the quality of liquid crystal TV set and liquid crystal display after the control mainboard of liquid crystal TV set and liquid crystal display is produced.
When testing the control mainboard of liquid crystal display and liquid crystal TV set, whether the operating voltage mainly comprising whether input and output that are whether normal to the input and output of picture signal, sound are normal, whether the control of button and remote controller is normal and controls vitals on mainboard tests in critical field.Traditional method of testing is put on manual test frame by control mainboard to be tested, then firmly depression of handle, control mainboard is stuck in above testing jig, plug holding wire successively again, press the power switch above testing jig, give and control main board power supply, then use a teleswitch start, after liquid crystal display displays images, whether normally go to observe image by naked eyes, whether people listens the sound of loudspeaker normal, whether response is had by pressing keys board test button, voltage index is checked by current voltmeter, after these test items all meet standard-required, this lane testing is complete, use a teleswitch be switched to next passage repeat test.There is following defect in this traditional control mainboard test mode: 1) very fast owing to controlling mainboard production capacity, and a people can only operate a testing jig when testing, and testing efficiency is low; 2) need in test process to plug wiring for a long time, switching channel operates, and causes testing efficiency low; 3) manual test frame in operation, and lower pressure-controlled mainboard needs certain power, long-time operation, easily causes staff tired; And because the power pressed down is uneven, easily damage control mainboard to be tested; 4), in test process, image and sound whether qualified needs rely on artificial subjective factor to judge, due to artificial difference, easily cause judgement to make mistakes.
Summary of the invention
In view of above-mentioned prior art Problems existing, the invention provides a kind of device for testing liquid crystal TV set or liquid crystal display control mainboard performance, to improve efficiency and the accuracy rate of product test.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is as follows:
Liquid crystal TV set controls mainboard automatic testing equipment, comprises testing jig, the test platform of described testing jig is horizontally installed with needle-bar plate, needle-bar plate is provided with the some thimbles corresponding to each pilot to be measured on control mainboard to be tested;
The side of test platform is provided with the test controller for testing mainboard to be tested, test controller comprises ADC acquisition module, message processing module, signal conversion module and display screen, described ADC acquisition module is connected with the thimble whether control mainboard to be tested is communicated with and the some thimbles corresponding with each several part operating voltage pilot to be measured on control mainboard to be tested for testing thimble to needle-bar plate lower surface by data wire, the input of signal conversion module is connected by some thimbles that data wire and needle-bar plate lower surface are corresponding with image pilot to be measured with sound on control mainboard to be tested, the input of message processing module is connected with the output of ADC acquisition module and the output of signal conversion module respectively, the output of message processing module is connected with display screen,
Be positioned in the testing jig frame above test platform and be also provided with the test baffle being parallel to needle-bar plate, the upper methods, rack of test baffle is provided with the cylinder perpendicular to test baffle, test platform is provided with push button and control circuit that control cylinder moves downward; Described control circuit comprises relay and electromagnetically operated valve, push button is connected in series between the coil of relay and power supply, the normally opened contact of relay is connected in series between electromagnetically operated valve and power supply, the control end of electromagnetically operated valve connects the controlled end of cylinder, and the piston rod top of cylinder is connected with test baffle is vertical; Described electromagnetically operated valve is also connected with the message processing module output of test controller by data wire.
The improvement of described test controller is: described test controller also comprises RS232 communication handover module, the output of the input link information processing module of RS232 communication handover module, the output of RS232 communication handover module is connected by data wire treats thimble corresponding to control mainboard passage bridge point to be tested on needle-bar plate lower surface.
Improvement of the present invention is: the top of described needle-bar plate is provided with division board, division board is provided through the via hole of each thimble.
Owing to have employed above technical scheme, the invention technological progress is as follows:
The present invention achieves by automatic test the object that a people can operate multiple stage testing jig, without the need to manual intervention in test process, judges whether product meets standard-required by computer, improves efficiency and the accuracy rate of test.The mainboard of the present invention to liquid crystal TV set is adopted to test, in test process, test controller can carry out whole process and communicates with control mainboard, the state of real-time corresponding control mainboard, once the qualified the next item down content that will jump to immediately of a certain item content test is tested, shorten the time interval of disparity items test.
Accompanying drawing explanation
Fig. 1 is the structural representation of testing jig of the present invention;
Fig. 2 is the circuit structure block diagram of test controller of the present invention;
Fig. 3 is the electrical schematic diagram of control circuit of the present invention.
Wherein: 1. frame, 2. test platform, 3. needle-bar plate, 31. thimbles, 4. division board, 5. cylinder, 6. test baffle, 7. push button.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further elaborated.
A kind of liquid crystal TV set controls mainboard automatic testing equipment, structure as shown in Figure 1, comprise testing jig, the structure of testing jig as shown in Figure 1, comprise test platform 2 and frame 1, the test platform of testing jig 2 is horizontally installed with needle-bar plate 3, needle-bar plate is provided with some thimbles 31, the position of thimble is corresponding to the pilot position each to be measured on control mainboard to be tested.The top of needle-bar plate is provided with division board 4, division board is provided through the via hole of each thimble, and the setting of division board is for improving the electrical isolation of control mainboard to be tested in test process and between needle-bar plate and insulation property.
The side of test platform is provided with the test controller for testing mainboard to be tested, and the structured flowchart of test controller as shown in Figure 2, comprises ADC acquisition module, message processing module, signal conversion module, RS232 communication handover module and display screen.
Wherein, ADC acquisition module is connected with the thimble whether control mainboard to be tested is communicated with and the some thimbles corresponding with each several part operating voltage pilot to be measured on control mainboard to be tested for testing thimble to needle-bar plate lower surface by data wire, for gathering voltage signal, and be transferred to message processing module.
The input of signal conversion module is connected by some thimbles that data wire and needle-bar plate lower surface are corresponding with image pilot to be measured with sound on control mainboard to be tested, for converting the image of control mainboard output to be tested and sound LVDS signal to can be able to be received by message processing module HDMI signal, and be transferred to message processing module.
The input of message processing module is connected with the output of ADC acquisition module and the output of signal conversion module respectively, for being analyzed the voltage signal gathered, picture signal and voice signal, differentiate whether each performance index meet standard-required; The output of message processing module is connected with display screen, for judged result being shown by display screen.
The test channel that RS232 communication handover module is used for treating according to the instruction of message processing module testing and control mainboard switches.The output of the input link information processing module of RS232 communication handover module, the output of RS232 communication handover module is connected by data wire treats thimble corresponding to control mainboard passage bridge point to be tested on needle-bar plate lower surface.
Be positioned at the test baffle 6 testing jig frame above test platform being also provided with and being parallel to needle-bar plate, the upper methods, rack of test baffle is provided with the cylinder 5 perpendicular to test baffle, test platform is provided with push button 7 and control circuit that control cylinder moves downward.The electrical schematic diagram of control circuit as shown in Figure 3, comprise relay and electromagnetically operated valve, push button is connected in series between the coil of relay and power supply, the normally opened contact of relay is connected in series between electromagnetically operated valve and power supply, the control end of electromagnetically operated valve connects the controlled end of cylinder, and the piston rod top of cylinder is connected with test baffle is vertical; Described electromagnetically operated valve is also connected with the message processing module output of test controller by data wire.
When the present invention controls mainboard for testing liquid crystal TV set, control mainboard is placed on the division board of test platform, by pressing push button, relay circuit is connected, the normally opened contact adhesive of relay, electromagnetically operated valve obtains electric, drive cylinder action, the piston rod further push to test baffle plate of cylinder is descending, control mainboard is pressed on division board, thimble now on needle-bar plate through after the via hole on division board with each test point joint controlling mainboard, the operation pressed down manually with wiring can be eliminated like this, simplify testing process.
After thimble and each test point controlling mainboard are connected, ADC acquisition module can collect a high voltage signal and pass to message processing module, when message processing module judges that this signal is high level, namely can send test instruction, make control mainboard connect 220V power supply and start working.
Now ADC acquisition module starts the operating voltage of each several part on collection control mainboard and is transferred to message processing module, store in message processing module standard operating voltage range it, after the magnitude of voltage gathered compares with standard value by message processing module, show whether each several part controlling mainboard is in normal operating conditions, and shown by display screen.
Meanwhile, signal conversion module after image, sound LVDS signal that mainboard exports be converted to the HDMI signal that message processing module can receive, is transferred to message processing module by controlling; After message processing module acquisition data, contrast with the characteristic value preset, the characteristic value of analysis image and sound one by one, as met the standard-required preset, then show image and sound normally, and shown by display screen.When carrying out graphical analysis, not only to carry out the judgement of characteristic value, also will carry out mating with the standard picture prestored, if two standards meet simultaneously, then show that image display is normal.When carrying out the analysis of sound, except needing the judgement carrying out characteristic value, also needing to analyze the waveform of sound, if two standards meet simultaneously, then showing that sound is normal.
After a lane testing, message processing module can send and switches the instruction of next passage, until all lane testings on all control mainboards are complete to the RS232 handover module that communicates.
After control mainboard is all completed, message processing module sends recovery command to electromagnetically operated valve, and solenoid control cylinder returns, and is lifted by test baffle, and can discharge the control mainboard be completed, test completes.
When the present invention is for testing other LCD products, only need change the needle-bar plate corresponding to each test point of LCD product to be tested, highly versatile.
Claims (3)
1. liquid crystal TV set controls mainboard automatic testing equipment, comprise testing jig, it is characterized in that: the test platform (2) of described testing jig is horizontally installed with needle-bar plate (3), needle-bar plate is provided with the some thimbles (31) corresponding to each pilot to be measured on control mainboard to be tested;
The side of test platform (2) is provided with the test controller for testing mainboard to be tested, test controller comprises ADC acquisition module, message processing module, signal conversion module and display screen, described ADC acquisition module is connected with the thimble whether control mainboard to be tested is communicated with and the some thimbles corresponding with each several part operating voltage pilot to be measured on control mainboard to be tested for testing thimble to needle-bar plate lower surface by data wire, the input of signal conversion module is connected by some thimbles that data wire and needle-bar plate lower surface are corresponding with image pilot to be measured with sound on control mainboard to be tested, the input of message processing module is connected with the output of ADC acquisition module and the output of signal conversion module respectively, described ADC acquisition module can collect a high voltage signal and pass to message processing module, when message processing module judges that this signal is high level, sends test instruction, makes control mainboard connect 220V power supply and starts working, now ADC acquisition module starts the operating voltage of each several part on collection control mainboard and is transferred to message processing module, the operating voltage range of standard is stored in message processing module, after the magnitude of voltage gathered compares with standard value by message processing module, show whether each several part controlling mainboard is in normal operating conditions, signal conversion module after image, sound LVDS signal that mainboard exports be converted to the HDMI signal that message processing module can receive, is transferred to message processing module by controlling, after message processing module obtains data, contrast with the characteristic value preset, the characteristic value of analysis image and sound one by one, as image meets default standard-required, and matches with the standard picture prestored, then show that image display is normal, as sound meets default standard-required, and the waveform of sound is analyzed, if two standards meet simultaneously, then show that sound is normal, the output of described message processing module is connected with display screen,
Be positioned at the test baffle (6) the testing jig frame (1) above test platform being also provided with and being parallel to needle-bar plate (3), the upper methods, rack of test baffle (6) is provided with the cylinder (5) perpendicular to test baffle, test platform is provided with push button (7) and control circuit that control cylinder moves downward; Described control circuit comprises relay and electromagnetically operated valve, push button is connected in series between the coil of relay and power supply, the normally opened contact of relay is connected in series between electromagnetically operated valve and power supply, the control end of electromagnetically operated valve connects the controlled end of cylinder, and the piston rod top of cylinder is connected with test baffle is vertical; Described electromagnetically operated valve is also connected with the message processing module output of test controller by data wire.
2. liquid crystal TV set according to claim 1 controls mainboard automatic testing equipment, it is characterized in that: described test controller also comprises RS232 communication handover module, the output of the input link information processing module of RS232 communication handover module, the output of RS232 communication handover module is connected by data wire treats thimble corresponding to control mainboard passage bridge point to be tested on needle-bar plate lower surface.
3. liquid crystal TV set according to claim 1 controls mainboard automatic testing equipment, it is characterized in that: the top of described needle-bar plate is provided with division board (4), division board is provided through the via hole of each thimble.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410248065.8A CN103997644B (en) | 2014-06-05 | 2014-06-05 | Liquid crystal TV set controls mainboard automatic testing equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410248065.8A CN103997644B (en) | 2014-06-05 | 2014-06-05 | Liquid crystal TV set controls mainboard automatic testing equipment |
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| CN103997644A CN103997644A (en) | 2014-08-20 |
| CN103997644B true CN103997644B (en) | 2016-02-10 |
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| CN201410248065.8A Ceased CN103997644B (en) | 2014-06-05 | 2014-06-05 | Liquid crystal TV set controls mainboard automatic testing equipment |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104168477A (en) * | 2014-09-02 | 2014-11-26 | 深圳市兆驰股份有限公司 | Automatic TV decoding deck test system and method |
| CN106488226B (en) * | 2015-08-25 | 2019-01-04 | 研祥智能科技股份有限公司 | Automated detection method and device on a kind of production line |
| CN106597248B (en) * | 2015-10-16 | 2019-11-29 | 惠州Tcl移动通信有限公司 | A kind of jigsaw detection device |
| CN106341629B (en) * | 2016-08-16 | 2023-10-20 | 厦门纳网科技股份有限公司 | Automatic correction system and method for ADC (analog to digital converter) of LCD (liquid crystal display television) main board |
| CN110579703A (en) * | 2019-10-17 | 2019-12-17 | 格力电器（武汉）有限公司 | Mainboard off-line testing device |
| CN111212281A (en) * | 2020-01-14 | 2020-05-29 | 深圳市金锐显数码科技有限公司 | Video board detection method and detection device |
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Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWM279857U (en) * | 2005-06-17 | 2005-11-01 | Innolux Display Corp | Liquid crystal display testing device |
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2014
- 2014-06-05 CN CN201410248065.8A patent/CN103997644B/en not_active Ceased
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|---|---|---|---|---|
| CN202330638U (en) * | 2011-11-18 | 2012-07-11 | 四川启明星蜀达电气有限公司 | Online automatic test system for printed circuit board |
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| CN103576075A (en) * | 2012-08-07 | 2014-02-12 | 达丰(上海)电脑有限公司 | Device and method for detecting mainboard automatically |
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