CN113946066A - Liquid crystal display detection system - Google Patents
Liquid crystal display detection system Download PDFInfo
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- CN113946066A CN113946066A CN202111106843.6A CN202111106843A CN113946066A CN 113946066 A CN113946066 A CN 113946066A CN 202111106843 A CN202111106843 A CN 202111106843A CN 113946066 A CN113946066 A CN 113946066A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 115
- 238000001514 detection method Methods 0.000 title claims abstract description 24
- 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 27
- 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
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 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
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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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
Abstract
The invention discloses a liquid crystal screen detection system, which comprises: the device 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 screen; the visual information acquisition module is used for acquiring image information of the liquid crystal screen, 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 screen, 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 signal and the analog electric signal into digital signals, and then carries out defect identification on the liquid crystal screen to identify 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 screen can be automatically detected, the detection is accurate, the automation degree is high, and the influence of environment and human factors is avoided.
Description
Technical Field
The invention belongs to the technical field of liquid crystal display detection, and particularly relates to a liquid crystal display detection system.
Background
At present, the defect detection and the brightness measurement of the liquid crystal screen are mostly observed by naked eyes, which not only wastes time and labor and is greatly influenced by personnel difference, but also has poor effect and is difficult to accurately find various defects.
Disclosure of Invention
In view of this, the invention provides a liquid crystal display detection system, by which defects of a liquid crystal display can be automatically detected, the detection is accurate, the automation degree is high, and the liquid crystal display detection system is not affected by environmental and human factors.
The invention is realized by the following technical scheme:
a liquid crystal screen detection system comprises: the device 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 screen, and the liquid crystal screen 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 screen, 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 screen, 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 a received video analog signal into a video digital signal, converts a received analog electric signal into a brightness digital signal, and firstly identifies the defect of the liquid crystal screen according to the video digital signal to identify whether the defect of a bright point, a dark point and uneven brightness exists on the liquid crystal screen; if yes, alarming; if the brightness value does not exist, performing 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 of the liquid crystal screen or the calculated brightness value, contrast and visual angle of the liquid crystal screen into an analog signal again, the analog signal is converted into a video through a display to be displayed, the video comprises the working state information of the signal processing module, the target position and graphic information of the defect of the liquid crystal screen and the brightness information of the liquid crystal screen, and the working state of the signal processing module comprises the following steps: and identifying defects of the liquid crystal screen and testing the brightness.
Further, the method also comprises the following steps: the motion control module and the 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 among the liquid crystal screen, the visual information acquisition module and the brightness information acquisition module;
the servo control module is a pivot for signal interaction between the signal processing module and the control motion control module, and the control motion control module controls the motion control module through the servo control module.
Further, the motion control module includes: the fixture comprises a fixture, 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 motion 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: the device comprises a decoder, a DSP, an encoder, a display and an 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 signal transmitted by the brightness information acquisition module, converting the analog electric signal into a brightness digital signal and then sending the brightness digital signal to the DSP; the DSP firstly identifies the defects of the liquid crystal screen according to the video digital signals, and identifies whether the defects of bright spots, dark spots and uneven brightness exist on the liquid crystal screen; if yes, sending an alarm signal to an alarm unit; if the brightness digital signal does not exist, the brightness of the liquid crystal screen is tested 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 of the liquid crystal screen and the liquid crystal screen at different angles between the visual information acquisition module and between the liquid crystal screen and the brightness information acquisition module are calculated, and then the visual angle of the liquid crystal screen is calculated; the DSP sends the identification result of the defect identification of 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 the defect identification or the brightness value, the contrast and the visual angle of the liquid crystal screen into an analog signal again and sending the analog signal to the display, and the display converts the analog signal into a video to be displayed; 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 regulating 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.
Further, 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 panel is used for converting the format of the test signal into a format which can be received by the liquid crystal screen and outputting the format to the liquid crystal screen; and the display control board is provided with an LVDS interface and an edp interface.
Further, the visual information collection 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.
Furthermore, the brightness information acquisition module adopts a brightness sensor.
Has the advantages that:
(1) the detection system of the invention can automatically identify the defects of the liquid crystal screen and test the brightness of the liquid crystal screen by detecting the defects 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 based on DM642, can ensure the real-time performance of image processing, can realize various alarming and recording functions, and can add other required functions according to requirements.
(3) The signal processing module of the invention adopts an image processing technology based on an extreme value, can realize qualitative judgment of a video image, 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 a perfect logic judgment function and can realize effective interference avoidance on interferents.
(4) The visual information acquisition module adopts a high-performance lens and a high-resolution CCD imaging system, so that clear pictures are acquired, and the judgment precision is ensured.
Drawings
FIG. 1 is a schematic diagram of the present invention.
Detailed Description
The invention is described in detail below 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 device 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 screen, and the liquid crystal screen can send out corresponding brightness after receiving the test signal; the test signal output module includes: the display control panel is used for converting the format of the test signal into a format which can be received by the liquid crystal screen and outputting the format to the liquid crystal screen; the display control board is provided with an LVDS interface and an edp interface, and 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 screen, 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 comprises: a lens and a CCD imaging system; the lens is used for acquiring 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 screen, 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 among the liquid crystal screen, the visual information acquisition module and the brightness information acquisition module; the motion control module includes: the fixture comprises a fixture, 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 motion 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 regulation of the visual information acquisition module and the brightness information acquisition module; the device can also be arranged on two clamps to realize the independent adjustment of the visual information acquisition module and the brightness information acquisition module;
the signal processing module is a digital signal processing system taking DSP as a core, and comprises: the device comprises a decoder, a DSP, an encoder, a display and an 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 sending the video digital signals to the DSP; the decoder is also used for acquiring the analog electric signal transmitted by the brightness information acquisition module, converting the analog electric signal into a brightness digital signal which can be processed by the DSP and then sending the brightness digital signal to the DSP; the DSP firstly identifies the defects of the liquid crystal screen according to the video digital signals, 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, the brightness of the liquid crystal screen is tested 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 of the liquid crystal screen at different 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 calculated, and then the visual angle of the liquid crystal screen is calculated; the DSP sends the identification result of defect identification of 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 the defect identification or the brightness value, the contrast and the visual angle of the liquid crystal screen into an analog signal again and sending the analog signal to the display, and the display converts the analog signal into a video to be displayed and sends the video to the information recording and input-output module; the video comprises working state information of the DSP (the working state of the DSP comprises defect identification and brightness test), target positions and graphic information of defects such as bright spots, dark spots and uneven brightness of the 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 pivot for 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 regulating 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 rotation 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 sent to the PC through a network for record storage.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement 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 screen detection system is characterized by comprising: the device 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 screen, and the liquid crystal screen 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 screen, 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 screen, 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 a received video analog signal into a video digital signal, converts a received analog electric signal into a brightness digital signal, and firstly identifies the defect of the liquid crystal screen according to the video digital signal to identify whether the defect of a bright point, a dark point and uneven brightness exists on the liquid crystal screen; if yes, alarming; if the brightness value does not exist, performing 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 of the liquid crystal screen or the calculated brightness value, contrast and visual angle of the liquid crystal screen into an analog signal again, the analog signal is converted into a video through a display to be displayed, the video comprises the working state information of the signal processing module, the target position and graphic information of the defect of the liquid crystal screen and the brightness information of the liquid crystal screen, and the working state of the signal processing module comprises the following steps: and identifying defects of the liquid crystal screen and testing the brightness.
2. The liquid crystal screen detection system of claim 1, further comprising: the motion control module and the 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 among the liquid crystal screen, the visual information acquisition module and the brightness information acquisition module;
the servo control module is a pivot for signal interaction between the signal processing module and the control motion control module, and the control motion control module controls the motion control module through the servo control module.
3. The liquid crystal screen detection system of claim 2, wherein the motion control module comprises: the fixture comprises a fixture, 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 motion 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. The liquid crystal screen detection system of claim 2, wherein the signal processing module comprises: the device comprises a decoder, a DSP, an encoder, a display and an 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 signal transmitted by the brightness information acquisition module, converting the analog electric signal into a brightness digital signal and then sending the brightness digital signal to the DSP; the DSP firstly identifies the defects of the liquid crystal screen according to the video digital signals, and identifies whether the defects of bright spots, dark spots and uneven brightness exist on the liquid crystal screen; if yes, sending an alarm signal to an alarm unit; if the brightness digital signal does not exist, the brightness of the liquid crystal screen is tested 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 of the liquid crystal screen and the liquid crystal screen at different angles between the visual information acquisition module and between the liquid crystal screen and the brightness information acquisition module are calculated, and then the visual angle of the liquid crystal screen is calculated; the DSP sends the identification result of the defect identification of 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 the defect identification or the brightness value, the contrast and the visual angle of the liquid crystal screen into an analog signal again and sending the analog signal to the display, and the display converts the analog signal into a video to be displayed; wherein, the DSP adopts DM642 of DSP 6000.
5. The liquid crystal display detection system of claim 3, wherein the servo control module receives a start 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.
6. The liquid crystal display detection system of claim 4, wherein the alarm unit adopts a light alarm or a voice alarm.
7. The liquid crystal screen detection system of any one of claims 1-6, 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. The liquid crystal screen detection system of any one of claims 1-6, wherein the test signal output module comprises: the display control panel is used for converting the format of the test signal into a format which can be received by the liquid crystal screen and outputting the format to the liquid crystal screen; and the display control board is provided with an LVDS interface and an edp interface.
9. The liquid crystal screen detection system of any one of claims 1-6, wherein the 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 a video analog signal and outputting the video analog signal to the signal processing module.
10. The liquid crystal screen detection system of any one of claims 1-6, wherein the brightness information collection module employs a brightness sensor.
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| CN202111106843.6A CN113946066A (en) | 2021-09-22 | 2021-09-22 | Liquid crystal display detection system |
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| CN202111106843.6A CN113946066A (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/CN113946066A/en active Pending
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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