CN113946066B - Liquid crystal display detection system - Google Patents
Liquid crystal display detection system Download PDFInfo
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- CN113946066B CN113946066B CN202111106843.6A CN202111106843A CN113946066B CN 113946066 B CN113946066 B CN 113946066B CN 202111106843 A CN202111106843 A CN 202111106843A CN 113946066 B CN113946066 B CN 113946066B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 116
- 238000001514 detection method Methods 0.000 title claims abstract description 25
- 238000012545 processing Methods 0.000 claims abstract description 44
- 230000000007 visual effect Effects 0.000 claims abstract description 44
- 230000007547 defect Effects 0.000 claims abstract description 33
- 238000012360 testing method Methods 0.000 claims abstract description 30
- 230000033001 locomotion Effects 0.000 claims description 20
- 238000003384 imaging method Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a liquid crystal display detection system, which comprises: the system comprises a visual information acquisition module, a brightness information acquisition module, a test signal output module and a signal processing module; the test signal output module is used for inputting test signals to the liquid crystal display; the visual information acquisition module is used for acquiring image information of the liquid crystal display, converting the image information into a video analog signal and transmitting the video analog signal to the signal processing module; the brightness information acquisition module is used for acquiring the brightness information of the liquid crystal display, converting the brightness information into an analog electric signal and transmitting the analog electric signal to the signal processing module; the signal processing module respectively converts the received video analog signals and analog electric signals into digital signals, then carries out defect identification on the liquid crystal screen, and identifies whether the defects of bright spots, dark spots and uneven brightness exist on the liquid crystal screen; through the detection system, the defects of the liquid crystal display can be automatically detected, the detection is accurate, the degree of automation is high, and the detection system is not influenced by environment and human factors.
Description
Technical Field
The invention belongs to the technical field of liquid crystal screen detection, and particularly relates to a liquid crystal screen detection system.
Background
At present, the defect detection and brightness measurement of the liquid crystal display are mostly observed by naked eyes, which is time-consuming and labor-consuming, greatly influenced by personnel difference, and has poor effect, so that various defects are difficult to accurately find.
Disclosure of Invention
In view of the above, the invention provides a liquid crystal screen detection system, by which defects of a liquid crystal screen can be automatically detected, the detection is accurate, the degree of automation is high, and the detection system is not influenced by environment and human factors.
The invention is realized by the following technical scheme:
A liquid crystal screen detection system, comprising: the system comprises a visual information acquisition module, a brightness information acquisition module, a test signal output module and a signal processing module;
the test signal output module is used for inputting a test signal to the liquid crystal display, and the liquid crystal display can send out corresponding brightness after receiving the test signal;
The visual information acquisition module is used for acquiring image information of the liquid crystal display, converting the image information into a video analog signal and transmitting the video analog signal to the signal processing module;
the brightness information acquisition module is used for acquiring the brightness information of the liquid crystal display, converting the brightness information into an analog electric signal and transmitting the analog electric signal to the signal processing module;
the signal processing module converts the received video analog signal into a video digital signal, converts the received analog electric signal into a brightness digital signal, and firstly carries out defect identification on the liquid crystal screen according to the video digital signal to identify whether the defects of bright spots, dark spots and uneven brightness exist on the liquid crystal screen; if yes, alarming; if not, carrying out brightness test on the liquid crystal screen according to the brightness digital signal, and calculating the brightness value of the liquid crystal screen; the signal processing module converts the identification result of defect identification on the liquid crystal screen or the calculated brightness value, contrast and visual angle of the liquid crystal screen into analog signals again, the analog signals are converted into video through a display to be displayed, the video contains working state information of the signal processing module, target position and graphic information of the defect of the liquid crystal screen and brightness information of the liquid crystal screen, and the working state of the signal processing module comprises: and (5) defect identification and brightness test of the liquid crystal display.
Further, the method further comprises the following steps: a motion control module and a servo control module;
the motion control module is used for adjusting the positions of the visual information acquisition module and the brightness information acquisition module so as to control the angles between the liquid crystal screen and the visual information acquisition module and between the liquid crystal screen and the brightness information acquisition module;
The servo control module is a pivot for performing signal interaction between the signal processing module and the motion control module, and the motion control module is controlled by the servo control module.
Further, the motion control module includes: the clamping device comprises a clamp, a servo motor and a transmission mechanism; the servo motor is connected with the clamp through a transmission mechanism and is used for controlling the movement of the clamp; the transmission mechanism adopts a speed reducer; the clamp is used for clamping the visual information acquisition module and the brightness information acquisition module.
Further, the signal processing module includes: decoder, DSP, encoder, display and alarm unit; the decoder is used for acquiring the video analog signals transmitted by the visual information acquisition module, converting the video analog signals into video digital signals and then transmitting the video digital signals to the DSP; the decoder is also used for acquiring the analog electric signals transmitted by the brightness information acquisition module, converting the analog electric signals into brightness digital signals and then transmitting the brightness digital signals to the DSP; the DSP firstly carries out defect identification on the liquid crystal screen according to the video digital signal, and identifies whether the liquid crystal screen has defects of bright spots, dark spots and uneven brightness; if yes, sending an alarm signal to an alarm unit; if the brightness digital signal does not exist, brightness test is carried out on the liquid crystal screen according to the brightness digital signal, the brightness value of the liquid crystal screen is calculated, meanwhile, the signal processing module controls the motion control module through the servo control module, the angles between the liquid crystal screen and the visual information acquisition module and between the liquid crystal screen and the brightness information acquisition module are adjusted, the contrast ratio of the liquid crystal screen and the visual information acquisition module and between the liquid crystal screen and the liquid crystal screen under different angles is calculated, and then the visual angle of the liquid crystal screen is calculated; the DSP sends the identification result of defect identification on the liquid crystal screen or the calculated brightness value, contrast and visual angle of the liquid crystal screen to the encoder; the encoder is used for converting the identification result of defect identification or the brightness value, contrast and visual angle of the liquid crystal display into analog signals again and transmitting the analog signals to the display, and the display converts the analog signals into videos for display; wherein, the DSP adopts DM642 of DSP 6000.
Further, the servo control module receives a starting signal through an IO interface of the signal processing module and receives a speed regulation signal through a serial port of the signal processing module; and the servo control module controls the rotation of the servo motor after receiving the starting signal, and controls the rotating speed of the servo motor after receiving the speed regulating signal.
Furthermore, the alarm unit adopts light alarm or voice alarm.
Further, the system also comprises an information recording and input/output module; the information recording and input/output module is used for recording and storing the video of the signal processing module.
Further, the test signal output module includes: the display control board converts the format of the test signal into a format which can be received by the liquid crystal screen and outputs the format to the liquid crystal screen; wherein, LVDS interface and edp interface are arranged on the display control board.
Further, the visual information acquisition module includes: a lens and a CCD imaging system; the lens is used for collecting image information of the liquid crystal screen, sending the image information to the CCD imaging system for imaging, converting the image information into video analog signals and outputting the video analog signals to the signal processing module.
Further, the brightness information acquisition module adopts a brightness sensor.
The beneficial effects are that:
(1) The detection system provided by the invention is used for detecting the defects of the liquid crystal screen, can automatically identify the defects of the liquid crystal screen and test the brightness of the liquid crystal screen, has accurate identification result and high automation degree, and is not influenced by environment and human factors.
(2) The signal processing module of the invention adopts a high-speed video image processing system built on the basis of the DM642, can ensure the real-time performance of image processing, can realize various alarming and recording functions, and can add other needed functions according to the requirements.
(3) The signal processing module of the invention adopts an extremum-based image processing technology, can realize qualitative judgment of video images, has the characteristics of high speed and accuracy, and can realize accurate judgment of defects of a liquid crystal screen; the signal processing module has perfect logic judging function and can realize effective interference avoidance to the interference objects.
(4) The visual information acquisition module adopts a high-performance lens and a high-resolution CCD imaging system, so that a clear picture is acquired, and the judgment accuracy is ensured.
Drawings
Fig. 1 is a schematic diagram of the composition of the present invention.
Detailed Description
The invention will now be described in detail by way of example with reference to the accompanying drawings.
The embodiment provides a liquid crystal display detection system, referring to fig. 1, including: the system comprises a visual information acquisition module, a brightness information acquisition module, a motion control module, a test signal output module, a signal processing module, a servo control module and an information recording and input/output module;
The test signal output module is used for inputting a test signal to the liquid crystal display, and the liquid crystal display can send out corresponding brightness after receiving the test signal; the test signal output module includes: the display control board converts the format of the test signal into a format which can be received by the liquid crystal screen and outputs the format to the liquid crystal screen; the display control board is provided with an LVDS interface and a edp interface, so that the display control board can adapt to liquid crystal screens with various interface types;
The visual information acquisition module is used for acquiring image information of the liquid crystal display, converting the image information into a video analog signal and transmitting the video analog signal to the signal processing module; wherein, the visual information acquisition module includes: a lens and a CCD imaging system; the lens is used for collecting image information of the liquid crystal screen, sending the image information to the CCD imaging system for imaging, converting the image information into a video analog signal and outputting the video analog signal to the signal processing module;
The brightness information acquisition module is used for acquiring the brightness information of the liquid crystal display, converting the brightness information into an analog electric signal and transmitting the analog electric signal to the signal processing module; the brightness information acquisition module adopts a brightness sensor;
The motion control module is used for adjusting the positions of the visual information acquisition module and the brightness information acquisition module so as to control the angles between the liquid crystal screen and the visual information acquisition module and between the liquid crystal screen and the brightness information acquisition module; the motion control module includes: the clamping device comprises a clamp, a servo motor and a transmission mechanism; the servo motor is connected with the clamp through a transmission mechanism and is used for controlling the movement of the clamp; the transmission mechanism can adopt a speed reducer; the clamp is used for clamping the visual information acquisition module and the brightness information acquisition module, and the visual information acquisition module and the brightness information acquisition module can be arranged on the same clamp to realize synchronous adjustment of the visual information acquisition module and the brightness information acquisition module; the device can also be arranged on two clamps to realize independent adjustment of the visual information acquisition module and the brightness information acquisition module;
The signal processing module is a digital signal processing system with a DSP as a core, and comprises: decoder, DSP, encoder, display and alarm unit; the decoder is used for acquiring the video analog signals transmitted by the visual information acquisition module, converting the video analog signals into video digital signals which can be processed by the DSP and then transmitting the video digital signals to the DSP; the decoder is also used for acquiring the analog electric signals transmitted by the brightness information acquisition module, converting the analog electric signals into brightness digital signals which can be processed by the DSP and then transmitting the brightness digital signals to the DSP; the DSP firstly carries out defect identification on the liquid crystal screen according to the video digital signal, and identifies whether the defects of bright spots, dark spots, uneven brightness and the like exist on the liquid crystal screen; if yes, sending an alarm signal to an alarm unit; if the brightness digital signal does not exist, brightness test is carried out on the liquid crystal screen according to the brightness digital signal, the brightness value of the liquid crystal screen is calculated, the motion control module is controlled to adjust the angles between the liquid crystal screen and the visual information acquisition module and between the liquid crystal screen and the brightness information acquisition module, the contrast ratio of the liquid crystal screen and the visual information acquisition module and the contrast ratio of the liquid crystal screen under different angles are calculated, and then the visual angle of the liquid crystal screen is calculated; the DSP sends the identification result of defect identification on the liquid crystal screen or the calculated brightness value, contrast and visual angle of the liquid crystal screen to the encoder and the information recording and input/output module; the encoder is used for converting the identification result of defect identification or the brightness value, contrast and visual angle of the liquid crystal display into analog signals again and transmitting the analog signals to the display, and the display converts the analog signals into videos for displaying and transmits the videos to the information recording and input/output module; the video comprises working state information of a DSP (the working state of the DSP comprises defect identification and brightness test), target position and graphic information of defects such as bright spots, dark spots, uneven brightness and the like of a liquid crystal screen, and brightness and contrast information of the liquid crystal screen; wherein, the alarm unit adopts light alarm or voice alarm; the DSP adopts DM642 of DSP 6000;
The servo control module is a hub for performing signal interaction between the DSP and the control motion control module, receives a starting signal sent by the DSP through an IO interface of the DSP, and receives a speed regulation signal sent by the DSP through a serial port of the DSP; the servo control module controls the rotation of the servo motor after receiving the starting signal, and controls the rotating speed of the servo motor after receiving the speed regulating signal;
The information recording and input/output module is used for recording and storing the received video; the information recording and input/output module comprises: the video record is stored in the hard disk or is sent to the PC through a network to be recorded and stored.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A liquid crystal display detection system, comprising: the system comprises a visual information acquisition module, a brightness information acquisition module, a test signal output module and a signal processing module;
the test signal output module is used for inputting a test signal to the liquid crystal display, and the liquid crystal display can send out corresponding brightness after receiving the test signal;
The visual information acquisition module is used for acquiring image information of the liquid crystal display, converting the image information into a video analog signal and transmitting the video analog signal to the signal processing module;
the brightness information acquisition module is used for acquiring the brightness information of the liquid crystal display, converting the brightness information into an analog electric signal and transmitting the analog electric signal to the signal processing module;
the signal processing module converts the received video analog signal into a video digital signal, converts the received analog electric signal into a brightness digital signal, and firstly carries out defect identification on the liquid crystal screen according to the video digital signal to identify whether the defects of bright spots, dark spots and uneven brightness exist on the liquid crystal screen; if yes, alarming; if not, carrying out brightness test on the liquid crystal screen according to the brightness digital signal, and calculating the brightness value of the liquid crystal screen; the signal processing module converts the identification result of defect identification on the liquid crystal screen or the calculated brightness value, contrast and visual angle of the liquid crystal screen into analog signals again, the analog signals are converted into video through a display to be displayed, the video contains working state information of the signal processing module, target position and graphic information of the defect of the liquid crystal screen and brightness information of the liquid crystal screen, and the working state of the signal processing module comprises: and (5) defect identification and brightness test of the liquid crystal display.
2. A liquid crystal display detection system as in claim 1, further comprising: a motion control module and a servo control module;
the motion control module is used for adjusting the positions of the visual information acquisition module and the brightness information acquisition module so as to control the angles between the liquid crystal screen and the visual information acquisition module and between the liquid crystal screen and the brightness information acquisition module;
The servo control module is a pivot for performing signal interaction between the signal processing module and the motion control module, and the motion control module is controlled by the servo control module.
3. A liquid crystal display detection system as in claim 2 wherein said motion control module comprises: the device comprises a clamp, a servo motor and a transmission mechanism; the servo motor is connected with the clamp through a transmission mechanism and is used for controlling the movement of the clamp; the transmission mechanism adopts a speed reducer; the clamp is used for clamping the visual information acquisition module and the brightness information acquisition module.
4. A liquid crystal display detection system as in claim 2 wherein said signal processing module comprises: decoder, DSP, encoder, display and alarm unit; the decoder is used for acquiring the video analog signals transmitted by the visual information acquisition module, converting the video analog signals into video digital signals and then transmitting the video digital signals to the DSP; the decoder is also used for acquiring the analog electric signals transmitted by the brightness information acquisition module, converting the analog electric signals into brightness digital signals and then transmitting the brightness digital signals to the DSP; the DSP firstly carries out defect identification on the liquid crystal screen according to the video digital signal, and identifies whether the liquid crystal screen has defects of bright spots, dark spots and uneven brightness; if yes, sending an alarm signal to an alarm unit; if the brightness digital signal does not exist, brightness test is carried out on the liquid crystal screen according to the brightness digital signal, the brightness value of the liquid crystal screen is calculated, meanwhile, the signal processing module controls the motion control module through the servo control module, the angles between the liquid crystal screen and the visual information acquisition module and between the liquid crystal screen and the brightness information acquisition module are adjusted, the contrast ratio of the liquid crystal screen and the visual information acquisition module and between the liquid crystal screen and the liquid crystal screen under different angles is calculated, and then the visual angle of the liquid crystal screen is calculated; the DSP sends the identification result of defect identification on the liquid crystal screen or the calculated brightness value, contrast and visual angle of the liquid crystal screen to the encoder; the encoder is used for converting the identification result of defect identification or the brightness value, contrast and visual angle of the liquid crystal display into analog signals again and transmitting the analog signals to the display, and the display converts the analog signals into videos for display; wherein, the DSP adopts DM642 of DSP 6000.
5. A liquid crystal display detection system according to claim 3, wherein the servo control module receives the start signal through an IO interface of the signal processing module and receives the speed regulation signal through a serial port of the signal processing module; and the servo control module controls the rotation of the servo motor after receiving the starting signal, and controls the rotating speed of the servo motor after receiving the speed regulating signal.
6. A liquid crystal display detection system according to claim 4 wherein the alarm unit uses a light alarm or a voice alarm.
7. A liquid crystal display detection system according to any one of claims 1 to 6 further comprising an information recording and input/output module; the information recording and input/output module is used for recording and storing the video of the signal processing module.
8. A liquid crystal display detection system according to any one of claims 1 to 6 wherein the test signal output module comprises: the display control board converts the format of the test signal into a format which can be received by the liquid crystal screen and outputs the format to the liquid crystal screen; wherein, LVDS interface and edp interface are arranged on the display control board.
9. A liquid crystal display detection system as claimed in any one of claims 1 to 6 wherein said visual information acquisition module comprises: a lens and a CCD imaging system; the lens is used for collecting image information of the liquid crystal screen, sending the image information to the CCD imaging system for imaging, converting the image information into video analog signals and outputting the video analog signals to the signal processing module.
10. A liquid crystal display detection system as claimed in any one of claims 1 to 6 wherein said brightness information acquisition module employs a brightness sensor.
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| CN202111106843.6A CN113946066B (en) | 2021-09-22 | 2021-09-22 | Liquid crystal display detection system |
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| CN202111106843.6A CN113946066B (en) | 2021-09-22 | 2021-09-22 | Liquid crystal display detection system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004294202A (en) * | 2003-03-26 | 2004-10-21 | Seiko Epson Corp | Defect detection method and device of screen |
| JP2009079983A (en) * | 2007-09-26 | 2009-04-16 | Seiko Epson Corp | Point defect detecting device and point defect detecting method |
| CN105204200A (en) * | 2015-10-20 | 2015-12-30 | 北京兆维电子(集团)有限责任公司 | LCD lighting defect detecting system and method |
| CN105259181A (en) * | 2015-10-26 | 2016-01-20 | 华为技术有限公司 | Display screen display defect detecting method, device and equipment |
| CN105301810A (en) * | 2015-11-24 | 2016-02-03 | 上海斐讯数据通信技术有限公司 | Screen defect detecting method and screen defect detecting device |
| CN106526917A (en) * | 2016-12-07 | 2017-03-22 | 北京工业大学 | Liquid crystal screen dot matrix detection device achieving scanning by means of line-scan digital camera |
-
2021
- 2021-09-22 CN CN202111106843.6A patent/CN113946066B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004294202A (en) * | 2003-03-26 | 2004-10-21 | Seiko Epson Corp | Defect detection method and device of screen |
| JP2009079983A (en) * | 2007-09-26 | 2009-04-16 | Seiko Epson Corp | Point defect detecting device and point defect detecting method |
| CN105204200A (en) * | 2015-10-20 | 2015-12-30 | 北京兆维电子(集团)有限责任公司 | LCD lighting defect detecting system and method |
| CN105259181A (en) * | 2015-10-26 | 2016-01-20 | 华为技术有限公司 | Display screen display defect detecting method, device and equipment |
| CN105301810A (en) * | 2015-11-24 | 2016-02-03 | 上海斐讯数据通信技术有限公司 | Screen defect detecting method and screen defect detecting device |
| CN106526917A (en) * | 2016-12-07 | 2017-03-22 | 北京工业大学 | Liquid crystal screen dot matrix detection device achieving scanning by means of line-scan digital camera |
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