CN103196383B - A kind of automatic testing method of battery pole ear centre distance - Google Patents
A kind of automatic testing method of battery pole ear centre distance Download PDFInfo
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- CN103196383B CN103196383B CN201310145747.1A CN201310145747A CN103196383B CN 103196383 B CN103196383 B CN 103196383B CN 201310145747 A CN201310145747 A CN 201310145747A CN 103196383 B CN103196383 B CN 103196383B
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Abstract
The invention discloses a kind of automatic testing method of battery pole ear centre distance, detection system comprises graphics processing unit, motion control unit, in real time monitoring unit and host computer.The image collected is carried out the size of software Treatment Analysis to lug centre distance and detects by graphics processing unit: find datum line I1, I2, bottom datum line I8, line segment I4, I5, I6 and I7 by pattern-recognition method.Simulate center line I3 by line I1 and line I2, determined summit R1, R2 of positive and negative lug by I4 line and I5 line, I6 line and I7 line intersection point respectively, determined basic point R3, R4 of positive and negative lug by I4 line, I8 line and I6 line, I8 line intersection point respectively.Calculate the distance W1 ~ W4 of R1 ~ R4 to center line I3 respectively, this value is lug centre distance.The inventive method can realize battery pole ear centre distance size quick, accurate, automatically detect.
Description
Technical field
Patent of the present invention relates to a kind of product size detection method, particularly relates to a kind of automatic testing method of the battery pole ear centre distance based on machine vision, belongs to Product checking field.
Background technology
Lug, be a kind of starting material producing lithium ion polymer battery product, the battery of mobile phone, Bluetooth battery, Notebook Battery etc. such as used in life all need to use lug.Battery is a point both positive and negative polarity, and lug is exactly the metal electric body extracted by both positive and negative polarity from battery core.In battery of mobile phone production run, carrying out dimensional measurement to the positive and negative lug of battery is operation very important together before cell package, and the size of battery to lug of different size has different technological requirements.
The battery outward appearance that need detect as shown in Figure 1, mainly makes the distance of positive and negative lug to center line and the size detection of lug centre distance to battery.
At present, in cell production process, for the size detection of lug, major part enterprise relies on traditional measuring method usually, as utilized the instruments such as milscale, vernier caliper or gauge to measure, need to rely on a large amount of manually having come, this not only increases cost of labor and handling cost, and due to human eye fatigability, there is instability, therefore the accuracy rate that detects cannot to be ensured.In addition, along with the lifting of production-scale expansion and production line travelling speed, there is greatly restriction in manual detection, cannot reach the requirement of modern industry line speed in speed.
Summary of the invention
For improving accuracy rate and speed, the reduction manual detection cost of battery pole ear size detection, patent of the present invention provides a kind of battery pole ear size automatic testing method based on machine vision.
The gordian technique scheme that patent of the present invention adopts is: adopt image software Treatment Analysis method to detect (as shown in Figure 4) battery pole ear centre distance:
(1) datum line I1, datum line I2, bottom datum line I8, line segment I4, line segment I5, line segment I6 and line segment I7 is found by pattern-recognition method, wherein, datum line I1, I2 are respectively the extended line on battery body arranged on left and right sides limit, bottom datum line I8 is the extended line of battery body coboundary, the limit, left side of right edge prolongation line segment and right side lug that line segment I4, I6 are respectively left side lug extends line segment, and the coboundary of coboundary prolongation line segment and right side lug that line segment I5, I7 are respectively left side lug extends line segment.
(2) center line I3 is simulated by datum line I1 and datum line I2; Determined summit R1, R2 of positive and negative lug by line segment I4 and line segment I5 intersection point, line segment I6 and line segment I7 intersection point respectively, determined basic point R3, R4 of positive and negative lug by line segment I4 and line segment I8 intersection point, line segment I6 and line segment I8 intersection point respectively.
(3) calculate the distance W1 ~ W4 of R1 ~ R4 to center line I3 respectively, this value is lug centre distance.
Detection system comprises graphics processing unit, motion control unit, in real time monitoring unit and host computer.The image collected is carried out software Treatment Analysis by graphics processing unit, and the detection data after process are sent to host computer; Host computer, except sending except control command to motion control card, additionally provides man-machine interface, for showing current detection situation in real time, recording and preserving and detecting data and substandard products image.This interface mainly comprises four function menus such as index parameter setting, detected state display, realtime curve and alarm logging, realizes the object of the real time and on line monitoring to whole system with this.
Compared with the conventional method, the usefulness of the inventive method is: the image information utilizing machine vision technique Quick Acquisition battery pole ear, real-time online is stablized precise and high efficiency and is carried out size and automatically detect, native system also establishes automatic alarm, real-time display testing result, realizes battery pole ear centre distance size and automatically detects.
Accompanying drawing explanation
Accompanying drawing 1 is the battery outside drawing that need detect.
Accompanying drawing 2 is structure principle charts of a kind of battery pole ear centre distance dimension automatic detection device based on machine vision.
Accompanying drawing 3 is overhaul flow charts of a kind of battery pole ear centre distance dimension automatic detection device based on machine vision.
Accompanying drawing 4 is battery plus-negative plate terminal lug locations drawing.
In accompanying drawing 2, numbering 1 is industrial black-white CCD, 2 are industrial lens, 3 are LED Blue backlights, 4 are monitor stations, 5 are products to be measured, 6 are fixtures, 7 are transparent plane glass plates, 8 are host computers, 9 are PLC, 10 are 7250I/O cards, 11 are mechanical arm controllers, 12 is mechanical arms.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
First at the technological parameter of host computer (8) upper setting present lot lug, then start detection.
When starting to detect, product to be measured (5) is by the material loading region being manually placed on monitor station (4), PLC (9) controls fixture (6) action, fix product to be measured (5), product to be measured (5) moves to immediately below industrial CCD (1) by the slide rail controlled on monitor station (4) by PLC (9) again, the appointed area of organic transparency glass plate (7) top namely in the middle of monitor station (4), after putting in place, PLC (9) sends unlatching light signal to 7250I/O card (10), after LED Blue backlight (3) is opened, PLC (9) sends trigger pip by host computer (8) to CCD (1), CCD (1) completes capture and through embedded software process:
Edge fitting method adopts the Find-Line kit of VisionPro, is provided with black white contrast threshold value, the noise that elimination is noisy, arranges double threshold after program, ensures accuracy.
Point fit line, use the LineBasectPoints function in the Creation kit of VisionPro to realize, this function ultimate principle first finds two end points, then simulates the perpendicular bisector of 2 line segments determined thus.Here, two selected end points are respectively the mid point of Fig. 4 middle conductor I1, I2, and the perpendicular bisector simulated is the center line I3 shown in Fig. 4.
Then current detection data result is sent to host computer (8).
Detection data compare to the parameter value preset and judge and send corresponding control command to mechanical arm controller (11) by host computer (8): if specification product, then send OK signal to mechanical arm controller (11), mechanical arm controller (11) controller mechanical arm (12) captures product, and delivers to specification product put area; If substandard product, then send NG signal to mechanical arm controller (11), mechanical arm controller (11) controller mechanical arm (12) captures substandard products, is delivered to substandard products region.
Be more than preferred embodiment of the present invention, not any pro forma restriction done to the present invention, every according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all belong in the scope of invention technical scheme.
Claims (1)
1. the automatic testing method of a battery pole ear centre distance, it is characterized in that, datum line I1 is found by pattern-recognition method, datum line I2, bottom datum line I8, line segment I4, line segment I5, line segment I6 and line segment I7, wherein, datum line I1, I2 is respectively a battery body left side, the extended line of right dual-side, bottom datum line I8 is the extended line of battery body coboundary, line segment I4, the limit, left side of right edge prolongation line segment and right side lug that I6 is respectively left side lug extends line segment, line segment I5, the coboundary of coboundary prolongation line segment and right side lug that I7 is respectively left side lug extends line segment, center line I3 is simulated by datum line I1 and datum line I2, determined summit R1, R2 of positive and negative lug by line segment I4 and line segment I5 intersection point, line segment I6 and line segment I7 intersection point respectively, determined basic point R3, R4 of positive and negative lug by line segment I4 and line segment I8 intersection point, line segment I6 and line segment I8 intersection point respectively, described lug centre distance is the distance W1 ~ W4 of R1 ~ R4 to center line I3.
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| CN201310145747.1A CN103196383B (en) | 2013-04-23 | 2013-04-23 | A kind of automatic testing method of battery pole ear centre distance |
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| CN201310145747.1A CN103196383B (en) | 2013-04-23 | 2013-04-23 | A kind of automatic testing method of battery pole ear centre distance |
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| CN103196383B true CN103196383B (en) | 2015-11-25 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107097009B (en) * | 2017-03-20 | 2019-03-29 | 多氟多新能源科技有限公司 | Lithium battery production line and tab conduction handle position finding and detection method, welder |
| CN107941805A (en) * | 2017-12-01 | 2018-04-20 | 无锡先导智能装备股份有限公司 | Battery core quality determining method |
| CN109269420A (en) * | 2018-08-31 | 2019-01-25 | 广州超音速自动化科技股份有限公司 | Naked battery core apparent size and pole piece deviation correction detection method, equipment, medium and system |
| CN110779446A (en) * | 2019-11-08 | 2020-02-11 | 广东利元亨智能装备股份有限公司 | Battery detection method and device, electronic equipment and battery detection system |
| CN112577421A (en) * | 2019-12-11 | 2021-03-30 | 广东利元亨智能装备股份有限公司 | Battery cell detection method, device and equipment |
| CN117795284A (en) * | 2022-07-29 | 2024-03-29 | 宁德时代新能源科技股份有限公司 | Measuring method and measuring device |
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Effective date of registration: 20190702 Address after: 214128 Room 201, Building C, 3 Yuanxi Road, Binhu District, Wuxi City, Jiangsu Province Patentee after: Wuxi IMV Industrial Control Equipment Co., Ltd. Address before: 214122 Jiangnan University, 1800 Lihu Avenue, Wuxi City, Jiangsu Province Patentee before: Jiangnan University |
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