CN101950516A - Detection system of driving plates liquid crystal television and liquid crystal display - Google Patents
Detection system of driving plates liquid crystal television and liquid crystal display Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 19
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 79
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 230000005236 sound signal Effects 0.000 claims abstract description 4
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Abstract
The invention discloses a detection system of the driving plates of a liquid crystal television and a liquid crystal display. In the invention, a signal generator generates various signals and inputs the signals to a card to be tested; the card to be tested is the driving plate of the liquid crystal television or the liquid crystal display; an image signal acquisition part acquires the LVDS original signals or VGA and DVI original signals of the card to be tested directly to obtain image signals of channels, a sound acquisition part acquires the original sound signals of the channels, a voltage and current analogue value acquisition part acquires an on-board voltage and a current signal to compare the on-board voltage and the current signal with various standard sample data prestored in system processing software of a PC host computer in terms of image, sound, voltage and current signal to generate a test report and a test result; and the test report and the test result are transmitted to a client production management system through a serial port or a network to instruct the client in production without any extra detection device, and thus, the detection cost is reduced greatly.
Description
Technical field:
The present invention relates to LCD TV and LCD detection technique field, more specifically to a kind of LCD TV and liquid crystal display-driving plate detection system.
Background technology:
At present, LCD TV and liquid crystal display-driving plate (claiming master control borad again) are when detecting, be that the manual remote controllers of operating personnel is carried out the switching of board under test passage. each channel image signal is need link on the display panels to judge artificially by human eye whether the quality of image output is up to standard then, voice signal is to insert earphone to judge by the audition of people's ear whether sound quality is up to standard, but also need a large amount of detecting instruments to detect the situation of change of electric current and voltage. all are differentiated all is that artificial idea knowledge is used as criterion, quality control does not have unitarity, reliability and stability are not guaranteed, therefore traditional detection method needs operating personnel's intervention fully just can finish in test process, and it is long to detect the time that is spent, so not only cause a large amount of time and manpower, expending of material resources, and testing efficiency is very low, and detecting station becomes the serious bottleneck of present the sector manufacturer's output.This just requires a kind of automatization test system, to improve or to avoid above-mentioned defective.
Summary of the invention:
Purpose of the present invention is exactly the deficiency at prior art, and provide a kind of LCD TV and liquid crystal display-driving plate detection system, it generates test report and test result by the system handles software in the PC main frame, test report and test result are sent to client's production management system by serial ports or network, be used for directly instructing the client to produce.
Technology solution of the present invention is as follows:
LCD TV and liquid crystal display-driving plate detection system, form by signal generator, board under test, board under test stationary installation, image acquisition parts, sound collection parts, electric current and voltage analog acquisition parts, digital quantity signal acquisition component, IO control assembly, PC main frame, system handles software and client's production management system
Board under test is LCD TV drive plate and liquid crystal display-driving plate;
Signal generator is to be used to take place various types of signal, for board under test provides Test input signal;
The board under test stationary installation has the fixedly anchor clamps of board under test, be electrically connected the probe of board under test, board under test is clamped on the anchor clamps, probe one end that is electrically connected board under test is electrically connected the measuring point of board under test, and the other end is electrically connected visual acquisition component, sound collection parts, electric current and voltage analog acquisition parts, digital quantity signal acquisition component, IO control assembly;
The image acquisition parts are by LVDS signal link block, the LVDS signal receives modular converter, the image central processing module, the picture signal cache module, PCI-E X4 transport module is formed, awaiting board card LVDS output interface is direct-connected in LVDS signal link block (41), finish the LVDS conversion of signals via LVDS signal reception modular converter and become the TTL signal, enter into visual central processing module, finished the analysis decoding and the generation image RGB data of LVDS signal postpones being stored in the picture signal cache module by the firmware program in the visual central processing module, after generating, frame complete image data can trigger in the internal memory of PC main frame that PCI-E X4 transport module passes back to a two field picture at a high speed by the PCI-EX4 bus us, so that the PC main frame carries out the analysis and the processing of picture signal;
The sound collection parts are sound card, the sound sensor device of sound card is connected with the voice output interface of board under test, and input audio signal passes back to processing and the analysis of finishing the left and right acoustic channels data behind the PC main frame through entering behind differential amplifier, A/D modular converter and the calibration module after the DA modular converter output sound data through the PCI high-speed bus;
Electric current and voltage analog acquisition parts are made up of electric current and voltage load module, ADC modular converter, electric current and voltage central processing module, the electric current and voltage load module is used for being connected with each road of integrated circuit board to be tested voltage to be measured, the board under test back ADC modular converter that powers on carries out real-time high-precision AD conversion and transformation result is cached in the electric current and voltage central processing module, and the internal memory that is sent to the PC main frame by the PCI high-speed bus is for analyzing and the test use;
The digital quantity signal acquisition component is made up of digital collection signal input module, message processing module, the digital collection signal input module is used to connect each digital quantity tested point of integrated circuit board to be tested, the message processing module real-time response is handled the variation of all tested point signals, and by pci bus the internal memory of result high-speed transfer to the PC main frame is used for analyzing and handling;
The IO control assembly is made up of output interface module, control treatment module, output interface module in the IO control assembly is electrically connected to and respectively controls contact in integrated circuit board to be tested and the signal generator, system handles software in the PC main frame sends each steering order to control treatment module, this module is finished system handles software control instruction and instruction is converted into various level signals and waveform exports output interface module to according to its instruction corresponding protocols regulation, be transferred to awaiting board card or signal generator by output interface module;
Comparison fully and generation test report and test result that system handles software in the PC main frame is finished image, sound, voltage, current signal, keystroke interface, USB interface, software version information with the various signals and the various master sample data in the system handles software in the PC main frame of image acquisition parts, sound collection parts, electric current and voltage analog acquisition parts, the collection of digital quantity signal acquisition component;
Test report and test result are given client's production management system by serial ports or network delivery.
Described signal generator 1 output following map and signal,
1), display mode has:
a、1920×1080P60；
b、1920×1080I60；
c、1920×1080I50；
D, 1280 * 720P60-SD (DVD);
e、720×483P60；
2), displayed image has:
A, colour bar (75/0/75/0);
B, white raster (75);
C, red raster (75);
D, green raster (75);
E, blue raster (75);
F, black light grid;
G, 12 grades of ladders;
H, cross center and demonstration amplitude (90,95,100);
I, quadravalence chessboard;
J, colored chessboard;
3), signal output has:
A, the output of HDTV component: Y, Pr, three component output terminal of Pb are arranged;
B, the output of VGA signal: 15 pin D type VGA lead-out terminals are arranged;
C, the output of CVBS signal;
D, the output of SCART signal;
E, the output of HDMI signal;
F, the output of ATV signal;
G, the output of DTV signal;
H, the output of S-Video signal;
I, the output of DVI signal.
Beneficial effect of the present invention is:
1, it generates test report and test result by the system handles software that is installed in the PC main frame, and test report and test result are sent to client's production management system by serial ports or network, is used for directly instructing the client to produce.
2, image of the present invention comparison, by be installed in system handles software in the PC main frame can integral body or regional area in each pixel in each component signal of RGB diversity ratio, exceed each component user of RGB and set the allowed band value and just be judged to be discrepancy.Sound comparison is to adopt the original sample sound and the waveform of current sampling sound and the similarity of amplitude to come comparison, exceeds the user and sets the allowed band value and just be judged to be sound and there are differences.
3, the present invention has also finished the detection of keystroke interface in the board under test, specifically be by IO control assembly analog subscriber actuation of keys, drag down each button level signal of drawing high in the keystroke interface one by one and trigger the different image information of board under test output, judge according to output image information whether each key circuit is intact in the keystroke interface.
4, the present invention has also finished the detection of the software version number in the integrated circuit board to be tested.Specifically be to send the version display command to awaiting board card, require integrated circuit board to compare and judge the current software of integrated circuit board whether programming is correct by image output version information and version information sample figure by the IO control assembly.
5, the present invention has also finished the detection of the usb circuit in the integrated circuit board to be tested.Specifically be to insert USB flash disk by USB interface, switch to by the IO control assembly then that board under test multimedia passage detects this channel image output information and sample figure compares to judge whether board under test recognizes USB flash disk, judge whether the test board usb circuit is intact thereby reach.
6, the unitarity of its examination criteria, good stability, detection time, many finishing in 100 seconds put in order the plate testing result; It does not need to add other detecting instruments, detects cost and has reduced a lot.
7, detection main frame asynchronous detection polylith test plate (panel) to be measured simultaneously, and respectively to each check-out console output examining report and testing result.
Description of drawings:
Fig. 1 is an one-piece construction synoptic diagram of the present invention
Fig. 2 is the structural representation of board under test stationary installation
Fig. 3 is the circuit block diagram of image acquisition parts
Fig. 4 is the circuit block diagram of sound collection parts
Fig. 5 is the circuit block diagram of electric current and voltage analog acquisition parts
Fig. 6 is the circuit block diagram of digital quantity signal acquisition component
Fig. 7 is the circuit block diagram of IO control assembly
Embodiment:
Embodiment: see shown in Fig. 1～7, LCD TV and liquid crystal display-driving plate detection system, form by signal generator 1, board under test 2, board under test stationary installation 3, image acquisition parts 4, sound collection parts 5, electric current and voltage analog acquisition parts 6, digital quantity signal acquisition component 7, IO control assembly 8, PC main frame 9, system handles software 91 and client's production management system 10
Board under test 2 is LCD TV drive plate and liquid crystal display-driving plate;
Signal generator 1 is to be used to take place various types of signal, for board under test provides Test input signal;
Board under test stationary installation 3 has the fixedly anchor clamps 31 of board under test, be electrically connected the probe 32 of board under test, board under test 2 is clamped on the anchor clamps 31, probe 32 1 ends that are electrically connected board under test are electrically connected the measuring point of board under test 2, and the other end is electrically connected visual acquisition component 4, sound collection parts 5, electric current and voltage analog acquisition parts 6, digital quantity signal acquisition component 7, IO control assembly 8;
Electric current and voltage analog acquisition parts 6 are made up of electric current and voltage load module 61, ADC modular converter 62, electric current and voltage central processing module 63, electric current and voltage load module 61 is used for being connected with each road of integrated circuit board to be tested voltage to be measured, the board under test back ADC modular converter 62 that powers on carries out real-time high-precision AD conversion and transformation result is cached in the electric current and voltage central processing module 63, and the internal memory that is sent to PC main frame 9 by the PCI high-speed bus is for analyzing and the test use;
Digital quantity signal acquisition component 7 is made up of digital collection signal input module 71, message processing module 72, digital collection signal input module 71 is used to connect each digital quantity tested point of integrated circuit board to be tested, message processing module 72 real-time responses are handled the variation of all tested point signals, and by pci bus the internal memory of result high-speed transfer to PC main frame 9 are used for analyzing and handling;
IO control assembly 8 is made up of output interface module 81, control treatment module 82, output interface module 81 in the IO control assembly 8 is electrically connected in integrated circuit board 2 to be tested and the signal generator 1 and respectively controls contact, system handles software 91 in the PC main frame 9 sends each steering order to control treatment module 82, this module is finished system handles software 91 steering orders and instruction is converted into various level signals and waveform exports output interface module 81 to according to its instruction corresponding protocols regulation, be transferred to awaiting board card 2 or signal generator 1 by output interface module 81;
System handles software 91 in the PC main frame is with the various signals of image acquisition parts 4, sound collection parts 5, electric current and voltage analog acquisition parts 6,7 collections of digital quantity signal acquisition component and comparison fully and generation test report and the test result that the various master sample data in the system handles software 91 in the PC main frame 9 are finished image, sound, voltage, current signal, keystroke interface, USB interface, software version information;
Test report and test result are given client's production management system 10 by serial ports or network delivery.
Described signal generator 1 output following map and signal,
1), display mode has:
a、1920×1080P60；
b、1920×1080I60；
c、1920×1080I50；
D, 1280 * 720P60-SD (DVD);
e、720×483P60；
2), displayed image has:
A, colour bar (75/0/75/0);
B, white raster (75);
C, red raster (75);
D, green raster (75);
E, blue raster (75);
F, black light grid;
G, 12 grades of ladders;
H, cross center and demonstration amplitude (90,95,100);
I, quadravalence chessboard;
J, colored chessboard;
3), signal output has:
A, the output of HDTV component: Y, Pr, three component output terminal of Pb are arranged;
B, the output of VGA signal: 15 pin D type VGA lead-out terminals are arranged;
C, the output of CVBS signal;
D, the output of SCART signal;
E, the output of HDMI signal;
F, the output of ATV signal;
G, the output of DTV signal;
H, the output of S-Video signal;
I, the output of DVI signal.
Claims (2)
1. LCD TV and liquid crystal display-driving plate detection system, it is characterized in that: form by signal generator (1), board under test (2), board under test stationary installation (3), image acquisition parts (4), sound collection parts (5), electric current and voltage analog acquisition parts (6), digital quantity signal acquisition component (7), IO control assembly (8), PC main frame (9), system handles software (91) and client's production management system (10)
Board under test (2) is LCD TV drive plate and liquid crystal display-driving plate;
Signal generator (1) is to be used to take place various types of signal, for board under test provides Test input signal;
Board under test stationary installation (3) has the fixedly anchor clamps of board under test (31), be electrically connected the probe (32) of board under test, board under test (2) is clamped on the anchor clamps (31), probe (32) one ends that are electrically connected board under test are electrically connected the measuring point of board under test (2), and the other end is electrically connected visual acquisition component (4), sound collection parts (5), electric current and voltage analog acquisition parts (6), digital quantity signal acquisition component (7), IO control assembly (8);
Image acquisition parts (4) are by LVDS signal link block (41), the LVDS signal receives modular converter (42), image central processing module (43), picture signal cache module (44), PCI-E X4 transport module (45) is formed, awaiting board card LVDS output interface is direct-connected in LVDS signal link block (41), finish the LVDS conversion of signals via LVDS signal reception modular converter (42) and become the TTL signal, enter into visual central processing module (43), finished the analysis decoding and the generation image RGB data of LVDS signal postpones being stored in the picture signal cache module (44) by the firmware program in the visual central processing module (43), after generating, frame complete image data can trigger in the internal memory of PC main frame (9) that PCI-E X4 transport module (45) passes back to a two field picture at a high speed by PCI-E X4 bus us, so that PC main frame (9) carries out the analysis and the processing of picture signal;
Sound collection parts (5) are sound card, the sound sensor device of sound card is connected with the voice output interface of board under test, and input audio signal passes back to processing and the analysis of finishing the left and right acoustic channels data behind the PC main frame (9) through entering behind differential amplifier, A/D modular converter and the calibration module after the D/A modular converter output sound data through the PCI high-speed bus;
Electric current and voltage analog acquisition parts (6) are made up of electric current and voltage load module (61), ADC modular converter (62), electric current and voltage central processing module (63), electric current and voltage load module (61) is used for being connected with each road of integrated circuit board to be tested voltage to be measured, the board under test back ADC modular converter (62) that powers on carries out real-time high-precision AD conversion and transformation result is cached in the electric current and voltage central processing module (63), and the internal memory that is sent to PC main frame (9) by the PCI high-speed bus is for analyzing and the test use;
Digital quantity signal acquisition component (7) is made up of digital collection signal input module (71), message processing module (72), digital collection signal input module (71) is used to connect each digital quantity tested point of integrated circuit board to be tested, message processing module (72) real-time response is handled the variation of all tested point signals, and by pci bus the internal memory of result high-speed transfer to PC main frame (9) is used for analyzing and handling;
IO control assembly (8) is by output interface module (81), control treatment module (82) is formed, output interface module (81) in the IO control assembly (8) is electrically connected in integrated circuit board to be tested (2) and the signal generator (1) and respectively controls contact, system handles software (91) in the PC main frame (9) sends each steering order to control treatment module (82), this module is finished system handles software (91) steering order and instruction is converted into various level signals and waveform exports output interface module (81) to according to its instruction corresponding protocols regulation, be transferred to awaiting board card (2) or signal generator (1) by output interface module (81);
System handles software (91) in the PC main frame is with the various signals of image acquisition parts (4), sound collection parts (5), electric current and voltage analog acquisition parts (6), digital quantity signal acquisition component (7) collection and comparison fully and generation test report and the test result that the various master sample data in the system handles software (91) in the PC main frame (9) are finished image, sound, voltage, current signal, keystroke interface, USB interface, software version information;
Test report and test result are given client's production management system (10) by serial ports or network delivery.
2. LCD TV according to claim 1 and liquid crystal display-driving plate detection system is characterized in that: signal generator 1 output following map and signal,
1), display mode has:
a、1920×1080P60；
b、1920×1080I60；
c、1920×1080I50；
D, 1280 * 720P60-SD (DVD);
e、720×483P60；
2), displayed image has:
A, colour bar (75/0/75/0);
B, white raster (75);
C, red raster (75);
D, green raster (75);
E, blue raster (75);
F, black light grid;
G, 12 grades of ladders;
H, cross center and demonstration amplitude (90,95,100);
I, quadravalence chessboard;
J, colored chessboard;
3), signal output has:
A, the output of HDTV component: Y, Pr, three component output terminal of Pb are arranged;
B, the output of VGA signal: 15 pin D type VGA lead-out terminals are arranged;
C, the output of CVBS signal;
D, the output of SCART signal;
E, the output of HDMI signal;
F, the output of ATV signal;
G, the output of DTV signal;
H, the output of S-Video signal;
I, the output of DVI signal.
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| CN 201010275525 CN101950516B (en) | 2010-09-08 | 2010-09-08 | Detection system of driving plates liquid crystal television and liquid crystal display |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010275525 CN101950516B (en) | 2010-09-08 | 2010-09-08 | Detection system of driving plates liquid crystal television and liquid crystal display |
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| CN101950516A true CN101950516A (en) | 2011-01-19 |
| CN101950516B CN101950516B (en) | 2012-12-05 |
Family
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| CN 201010275525 Active CN101950516B (en) | 2010-09-08 | 2010-09-08 | Detection system of driving plates liquid crystal television and liquid crystal display |
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