CN1453558A - Aperture size mesurer and measuring method - Google Patents
Aperture size mesurer and measuring method Download PDFInfo
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- CN1453558A CN1453558A CN 03108002 CN03108002A CN1453558A CN 1453558 A CN1453558 A CN 1453558A CN 03108002 CN03108002 CN 03108002 CN 03108002 A CN03108002 A CN 03108002A CN 1453558 A CN1453558 A CN 1453558A
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Abstract
The aperture size measurer consists of two parts of hardware and software, its hardware includes power source connected to photocoupling sensor, shadow mask slot, magnifying glass, photocoupling sensor, image card and industrial control computer comprising keyboard, hard disc, mouse, display, printer and software program. The measuring process includes calibration, automatic measurement and manual measurement. The present invention can measure the length size between any two points in the collected image with measurement error less than 2 mm, and the measurement results may be displayed, printed and stored.
Description
One, technical field
The present invention relates to a kind of inside diameter measurement device and aperture size measuring method thereof, the aperture during particularly the planar mask of colored picture tube is made and the inside diameter measurement of working version dimensional measurement and the trickle article of other industry.
Two, background technology
The measurement of its aperture size of shadow mask that prior art is produced adopts microscope visualization method to measure always, and the reading error of Ce Lianging is big like this, and poor accuracy can produce harmful effect to explained hereafter.
Three, summary of the invention
The purpose of this invention is to provide a kind of aperture size measurement mechanism that utilizes optical element and computer system accurately to measure the planar mask aperture size.
Another object of the present invention provides a kind of aperture size measuring method.
The technical scheme of realization the object of the invention is achieved in that by hardware and software two parts to be formed, it is characterized in that hardware comprises that a power supply connects photo-coupled sensor, the output terminal of mains lighting supply connects shadow mask slotted eye, magnifier, photo-coupled sensor successively respectively, photo-coupled sensor connects image card and industrial computer, be connected with keyboard, hard disk, mouse, display, printer on the industrial computer respectively, computer software programs are installed on the industrial computer.
The aperture size measuring method comprises the steps:
A, demarcation: utilize photo-coupled sensor to gather the image of the standard model of known dimensions, adding up the length of interior all horizontal lines of tested mesh or perpendicular line promptly counts, the mode of getting is then wherein counted as groove width, count with this again and remove the physical size of standard model groove width, promptly get calibration coefficient K;
B, measurement automatically: to the sample image of gathering, according to the direction of placing, add up the length of interior all horizontal lines of tested mesh or perpendicular line and promptly count, the mode of getting is then wherein counted as groove width, and this number multiply by calibration coefficient K again and promptly gets groove width; The wide measurement of bridge is then added up length or all horizontal length of all perpendicular line between neighbouring two mesh and is promptly counted, and gets wherein reckling then and counts as bridge is wide, and this number multiply by calibration coefficient K again, and promptly to get bridge wide;
C, manual measurement: the coordinate (X of two points in the image of the acquisition operator of elder generation appointment
1, Y
1), (X
2, Y
2), again with following formula obtain between these 2 apart from d
d＝K×〔(X
2-X
1)
2+(Y
2-Y
1)
2〕
1/2
The present invention compared with prior art has robotization journey height, and is simple to operate, visual strong, it can measure the length dimension of any point-to-point transmission in the images acquired, and measuring error is less than 2 millimeters, greatly widened the field range of measuring, working environment preferably is provided simultaneously.Can be convenient to many people product of together analyzing and researching, measurement image result can show on computer display, measurement data can also be stored, is printed at last, as permanent file maintenance.
Because in process of production, shadow mask aperture and working version figure all can present not printing opacity and two kinds of colors of lighttight black and white to background light source, utilize this characteristic, adopt photo-coupled sensor (CCD) component graphics acquisition technique, cooperate related software that image is handled with industrial computer, the sample aperture size is presented on the screen, widened the field range of measuring, data are more accurate, thoroughly got rid of artificial factor.
Four, description of drawings
Fig. 1 is the structured flowchart of aperture size measurement mechanism;
Fig. 2 measures calibration interface figure (a) for aperture size;
Fig. 3 measures calibration interface figure (b) for aperture size.
Five, embodiment
Accompanying drawing is a specific embodiment of the present invention.
Below in conjunction with accompanying drawing content of the present invention is described further:
With reference to shown in Figure 1, form by hardware and software two parts, it is characterized in that hardware comprises that a power supply 1 connects photo-coupled sensor 2, the output terminal of mains lighting supply 3 connects shadow mask slotted eye 4, magnifier 5, photo-coupled sensor 2 successively respectively, photo-coupled sensor 2 connects image card 6 and industrial computer 7, be connected with keyboard 8, hard disk 9, mouse 10, display 11, printer 12 on the industrial computer 7 respectively, on the industrial computer 7 computer software programs be installed.
The aperture size measuring method comprises the steps:
A, demarcation: utilize photo-coupled sensor 2 to gather the image of the standard model of known dimensions, adding up the length of interior all horizontal lines of tested mesh or perpendicular line promptly counts, the mode of getting is then wherein counted as groove width, count with this again and remove the physical size of standard model groove width, promptly get calibration coefficient K;
B, measurement automatically: to the sample image of gathering, according to the direction of placing, add up the length of interior all horizontal lines of tested mesh or perpendicular line and promptly count, the mode of getting is then wherein counted as groove width, and this number multiply by calibration coefficient K again and promptly gets groove width; The wide measurement of bridge is then added up length or all horizontal length of all perpendicular line between neighbouring two mesh and is promptly counted; Get wherein reckling then and count as bridge is wide, this number multiply by calibration coefficient K again, and promptly to get bridge wide;
C, manual measurement: the coordinate (X of two points in the image of the acquisition operator of elder generation appointment
1, Y
1), (X
2, Y
2), again with following formula obtain between these 2 apart from d
d＝K×〔(X
2-X
1)
2+(Y
2-Y
1)
2〕
1/2
Referring to shown in Figure 2, the center bore of measuring with projector is one of the 37cm CPT shadow mask of 161 μ m.
Inside diameter measurement calibration interface and step:
Demarcate key with the automatic aperture on the click system master interface, system enters automatic aperture calibration interface, then:
1, at first select direction of measurement according to the placement direction of shadow mask, the last figure of this example is depicted as vertically;
2, catch the demarcation key with click, adjust the camera lens focal length then, make its image effect reach best;
3, with keyboard input standard value 161, can click the little button in next door then and add standard value, just this input value can be preserved, use after being convenient to;
4, with the interface switchback, click " catch and demarcate " button, system measures automatically, demarcates, its result inserts the scale-up factor hurdle automatically, this step can repeat repeatedly, make scale-up factor reach stable or change little till, this value is the value of calibration coefficient K;
5, click " preserve and demarcate " button, finish demarcation;
6, click the Back button to main interface.
Referring to shown in Figure 3, one of 37 centimetres of CPT shadow mask of unknown center bore.
Click the automatic measurement key on the main interface, system enters automatic inside diameter measurement interface, then:
1, carry out the parameter setting:
1) selecting the shadow mask specification is 37cm, and the technological requirement of 37cm is pressed by system then, is that the adding technology required value is 159 μ m in 8 μ m, the technological requirement value hurdle with adding error range in the error range hurdle automatically;
2) error range value is can the modification value, as the needs change, can click the error range hurdle up and down arrow increase and decrease operation;
3) select direction of measurement according to the placement direction of shadow mask.Error range is in order to judge whether shadow mask is qualified, and its Rule of judgment is: technological requirement value ± error range value, if actual measured value promptly is judged as defective not in this scope;
2, set up parameter after, placing shadow mask can measure, and clicks " catch and analyze " button, the demonstration 159 actual measured value hurdle in, promptly institute's gaging hole directly is 159 μ m, finishes surveying work;
3, print the aperture data if desired, can click " printing aperture value " button, enter the printing interface and print operation:
4, click the Back button again to main interface.
The present invention can measure the length dimension of any point-to-point transmission in the images acquired, and measuring error has greatly been widened the field range of measuring less than 2 millimeters, and working environment preferably is provided simultaneously.Because in process of production, shadow mask aperture and working version figure all can present not printing opacity and two kinds of colors of lighttight black and white to background light source, utilize this characteristic, adopt photo-coupled sensor CCD component graphics acquisition technique, with industrial computer coupled computer software program image is handled, the sample aperture size is presented on the screen, widened the field range of measuring, data are more accurate, thoroughly got rid of artificial factor.
Optical signalling exports photo-coupled sensor CCD device to during measurement, image on the photosurface, obtain best amplification effect by the object distance of regulating magnifier, the image video signal of CCD device output is sent to image card and handles, and the wide target image of bridge between slotted eye width on the planar mask and two slotted eyes is handled, is measured demonstration, can finish measuring task with digital image processing techniques by computing machine.
Claims (2)
1, a kind of aperture size measurement mechanism, form by hardware and software two parts, it is characterized in that hardware comprises that a power supply (1) connects photo-coupled sensor (2), the output terminal of mains lighting supply (3) connects shadow mask slotted eye (4), magnifier (5), photo-coupled sensor (2) successively respectively, photo-coupled sensor (2) connects image card (6) and industrial computer (7), be connected with keyboard (8), hard disk (9), mouse (10), display (11), printer (12) on the industrial computer (7) respectively, industrial computer is equipped with computer software programs on (7).
2, a kind of aperture size measuring method of using the described aperture size measurement mechanism of claim 1 comprises the steps:
A, demarcation: utilize photo-coupled sensor (2) to gather the image of the standard model of known dimensions, adding up the length of interior all horizontal lines of tested mesh or perpendicular line promptly counts, the mode of getting is then wherein counted as groove width, count with this again and remove the physical size of standard model groove width, promptly get calibration coefficient K;
B, measurement automatically: to the sample image of gathering, according to the direction of placing, add up the length of interior all horizontal lines of tested mesh or perpendicular line and promptly count, the mode of getting is then wherein counted as groove width, and this number multiply by calibration coefficient K again and promptly gets groove width; The wide measurement of bridge is then added up length or all horizontal length of all perpendicular line between neighbouring two mesh and is promptly counted, and gets wherein reckling then and counts as bridge is wide, and this number multiply by calibration coefficient K again, and promptly to get bridge wide;
C, manual measurement: the coordinate (X of two points in the image of the acquisition operator of elder generation appointment
1, Y
1), (X
2, Y
2), again with following formula obtain between these 2 apart from d:
d＝K×〔(X
2-X
1)
2+(Y
2-Y
1)
2〕
1/2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03108002 CN1198114C (en) | 2003-04-28 | 2003-04-28 | Aperture size mesurer and measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03108002 CN1198114C (en) | 2003-04-28 | 2003-04-28 | Aperture size mesurer and measuring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1453558A true CN1453558A (en) | 2003-11-05 |
| CN1198114C CN1198114C (en) | 2005-04-20 |
Family
ID=29259882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03108002 Expired - Fee Related CN1198114C (en) | 2003-04-28 | 2003-04-28 | Aperture size mesurer and measuring method |
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| Country | Link |
|---|---|
| CN (1) | CN1198114C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323417C (en) * | 2005-12-26 | 2007-06-27 | 西安交通大学 | Intelligent measuring instrument for shadow mask aperture |
| CN102825016A (en) * | 2012-09-18 | 2012-12-19 | 吴江市华恒精密五金有限公司 | Nut aperture sorting device |
| CN104279966A (en) * | 2014-10-08 | 2015-01-14 | 贵州黎阳航空动力有限公司 | Detection method for swirl holes in nozzle swirl plate of aircraft engine |
| CN104457618A (en) * | 2014-11-21 | 2015-03-25 | 沪东重机有限公司 | Locating tool and method for measuring diesel engine nozzle |
| CN114355091A (en) * | 2022-01-17 | 2022-04-15 | 厦门巨帮自动化科技有限公司 | Device detection system and method thereof |
| CN114623781B (en) * | 2022-04-28 | 2024-05-10 | 农业农村部南京农业机械化研究所 | Image-based measuring method and measuring system for outline dimensions of crop seeds such as green manure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062586B (en) * | 2010-11-19 | 2012-06-13 | 华中科技大学 | Inner-bore laser measuring device |
-
2003
- 2003-04-28 CN CN 03108002 patent/CN1198114C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1323417C (en) * | 2005-12-26 | 2007-06-27 | 西安交通大学 | Intelligent measuring instrument for shadow mask aperture |
| CN102825016A (en) * | 2012-09-18 | 2012-12-19 | 吴江市华恒精密五金有限公司 | Nut aperture sorting device |
| CN104279966A (en) * | 2014-10-08 | 2015-01-14 | 贵州黎阳航空动力有限公司 | Detection method for swirl holes in nozzle swirl plate of aircraft engine |
| CN104457618A (en) * | 2014-11-21 | 2015-03-25 | 沪东重机有限公司 | Locating tool and method for measuring diesel engine nozzle |
| CN104457618B (en) * | 2014-11-21 | 2017-07-28 | 沪东重机有限公司 | A kind of positioning tool measured for diesel nozzeles and method |
| CN114355091A (en) * | 2022-01-17 | 2022-04-15 | 厦门巨帮自动化科技有限公司 | Device detection system and method thereof |
| CN114623781B (en) * | 2022-04-28 | 2024-05-10 | 农业农村部南京农业机械化研究所 | Image-based measuring method and measuring system for outline dimensions of crop seeds such as green manure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1198114C (en) | 2005-04-20 |
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Owner name: IRICO GROUP ELECTRONICS CO., LTD. Free format text: FORMER OWNER: CAIHONG COLOUR KINESCOPE GENERAL FACTORY Effective date: 20041203 |
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