CN109342855A - A kind of bad automatic testing method of VGA signal wire of test - Google Patents
A kind of bad automatic testing method of VGA signal wire of test Download PDFInfo
- Publication number
- CN109342855A CN109342855A CN201811433386.XA CN201811433386A CN109342855A CN 109342855 A CN109342855 A CN 109342855A CN 201811433386 A CN201811433386 A CN 201811433386A CN 109342855 A CN109342855 A CN 109342855A
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- China
- Prior art keywords
- display
- signal wire
- production line
- line computer
- test
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The invention discloses a kind of bad automatic testing methods of VGA signal wire on probation, the following steps are included: 1) in process of production, the VGA signal wire for being connected on production line computer and being used to test is connected to display, so that production line computer be connect with display；2) test program inside production line computer sends a command to display, if display receives and feeds back to production line computer after order and have received order, continues to test；If display determines that VGA signal wire for defective products and is alarmed without production line computer, production line computer is fed back to；3) after production line computer receives the feedback information of display, test program inside production line computer reads the data after display interior analog-to-digital conversion, and it is compared with the standard module adc data in test program, the two data difference value is less than preset threshold value, determine VGA signal wire then for non-defective unit, otherwise determines that VGA signal wire is defective products.The present invention can effectively reduce human input, and promote quality.
Description
Technical field
The present invention relates to the display production line test bad detection fields of VGA signal wire more particularly to a kind of test to use
The bad automatic testing method of VGA signal wire.
Background technique
In flow line production, every display can use VGA signal wire to connect flying-spot video generator and display,
Do the functions such as analog-to-digital conversion, burning program and blank level adjustment (being referred to as test action).VGA signal wire is in the process of reuse
In, it may appear that probe is curved, contact hole becomes larger, inside is broken, and display is caused to occur picture colour cast in production, can not communicate
Etc. bad, production efficiency and quality are influenced.
Every display uses in existing flow line production VGA tests signal wire, operator can only from signal wire appearance,
Interface degree of wear etc. simply judges whether normal use, and the part for really influencing electric parameter is not easy to find.Manually
The defects of that there are human inputs is big for judgement, personnel's fatiguability, quality guarantee is poor.
Summary of the invention
The purpose of the present invention is to provide a kind of reduction human input, the VGA signal wire for promoting the test of quality is bad
Automatic testing method.
To achieve the above object, the invention adopts the following technical scheme:
A kind of bad automatic testing method of VGA signal wire of test, described detection method includes the following steps:
1) the VGA signal wire for being connected on production line computer and being used to test in process of production, is connected to display, from
And production line computer is connect with display；
2) test program inside production line computer sends a command to display, if display feeds back to production after receiving order
Line computer has received order, then continues to test；If display determines VGA without production line computer, production line computer is fed back to
Signal wire is defective products and alarms；
3) after production line computer receives the feedback information of display, the test program inside production line computer is read in display
Data after portion's analog-to-digital conversion, and be compared with the standard module adc data in test program, the two data difference value is less than
Preset threshold value determines VGA signal wire then for non-defective unit, otherwise determines that VGA signal wire is defective products.
The standard module adc data preparation method is as follows: the R/G/B signal of standard is provided by flying-spot video generator,
The VGA signal wire of flying-spot video generator test is connect with display, measures the analog-to-digital conversion adc data of standard, so
It is written in the test program inside production line computer afterwards.
The VGA signal wire of test is connected to automatically by display using production equipment in step 1).
The invention adopts the above technical scheme, realizes that automatic detection VGA signal wire is bad, effectively reduces human input, and
Promote quality.
Specific embodiment
A kind of bad automatic testing method of VGA signal wire of test of the present invention, described detection method includes the following steps:
1) the VGA signal wire for being connected on production line computer and being used to test in process of production, is connected to display, from
And production line computer is connect with display；
2) test program inside production line computer sends a command to display, if display feeds back to production after receiving order
Line computer has received order, then continues to test；If display determines VGA without production line computer, production line computer is fed back to
Signal wire is defective products and alarms；
3) after production line computer receives the feedback information of display, the test program inside production line computer is read in display
Data after portion's analog-to-digital conversion, and be compared with the standard module adc data in test program, the two data difference value is less than
Preset threshold value determines VGA signal wire then for non-defective unit, otherwise determines that VGA signal wire is defective products.
The standard module adc data preparation method is as follows: the R/G/B signal of standard is provided by flying-spot video generator,
The VGA signal wire of flying-spot video generator test is connect with display, measures the analog-to-digital conversion adc data of standard, so
It is written in the test program inside production line computer afterwards.
The VGA signal wire of test is connected to automatically by display using production equipment in step 1).
It is bad that the present invention may be implemented to detect VGA signal wire automatically, effectively reduces human input, and promote quality.
Above the preferred embodiment of the patent is described in detail, but this patent is not limited to above-mentioned embodiment party
Formula within the knowledge of one of ordinary skill in the art can also be under the premise of not departing from this patent objective
It makes a variety of changes.
Claims (3)
1. a kind of bad automatic testing method of VGA signal wire of test, it is characterised in that: the detection method includes following step
It is rapid:
1) the VGA signal wire for being connected on production line computer and being used to test in process of production, is connected to display, from
And production line computer is connect with display；
2) test program inside production line computer sends a command to display, if display feeds back to production after receiving order
Line computer has received order, then continues to test；If display determines VGA without production line computer, production line computer is fed back to
Signal wire is defective products and alarms；
3) after production line computer receives the feedback information of display, the test program inside production line computer is read in display
Data after portion's analog-to-digital conversion, and be compared with the standard module adc data in test program, the two data difference value is less than
Preset threshold value determines VGA signal wire then for non-defective unit, otherwise determines that VGA signal wire is defective products.
2. a kind of bad automatic testing method of VGA signal wire of test according to claim 1, it is characterised in that: institute
It is as follows to state standard module adc data preparation method: the R/G/B signal of standard is provided by flying-spot video generator, by vision signal
The VGA signal wire of generator test is connect with display, measures the analog-to-digital conversion adc data of standard, then write-in production
In test program inside line computer.
3. a kind of bad automatic testing method of VGA signal wire of test according to claim 1, it is characterised in that: step
The VGA signal wire of test is connected to display automatically by rapid 1) middle use production equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811433386.XA CN109342855A (en) | 2018-11-28 | 2018-11-28 | A kind of bad automatic testing method of VGA signal wire of test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811433386.XA CN109342855A (en) | 2018-11-28 | 2018-11-28 | A kind of bad automatic testing method of VGA signal wire of test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109342855A true CN109342855A (en) | 2019-02-15 |
Family
ID=65318669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811433386.XA Pending CN109342855A (en) | 2018-11-28 | 2018-11-28 | A kind of bad automatic testing method of VGA signal wire of test |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429956A (en) * | 2019-07-31 | 2019-11-08 | 国网天津市电力公司 | Portable multi-interface video cables test box |
| CN116609706A (en) * | 2023-07-19 | 2023-08-18 | 北京同方艾威康科技有限公司 | VGA image quality nondestructive disconnection detection method |
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| US20100090849A1 (en) * | 2008-10-14 | 2010-04-15 | Canon Kabushiki Kaisha | Electric equipment with digital interface and method for controlling the same |
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| CN116609706B (en) * | 2023-07-19 | 2023-09-19 | 北京同方艾威康科技有限公司 | VGA image quality nondestructive disconnection detection method |
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Application publication date: 20190215 |