CN101923058A - On-line detecting equipment and method of welding quality for noble-metal composite tape - Google Patents
On-line detecting equipment and method of welding quality for noble-metal composite tape Download PDFInfo
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- CN101923058A CN101923058A CN 201010188172 CN201010188172A CN101923058A CN 101923058 A CN101923058 A CN 101923058A CN 201010188172 CN201010188172 CN 201010188172 CN 201010188172 A CN201010188172 A CN 201010188172A CN 101923058 A CN101923058 A CN 101923058A
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Abstract
The invention discloses on-line detecting equipment and method of the welding quality for a noble-metal composite tape. The detecting equipment comprises an industrial CCD (Charge Coupled Device) digital camera, an industrial lens, a 1394 card, a 1394 data transmission line, a camera bracket and a computer, wherein the industrial lens is installed on the industrial CCD digital camera, the industrial CCD digital camera is installed on the camera bracket, the 1394 card is installed on the computer, and the industrial CCD digital camera is connected with the computer through the 1394 data transmission line. The on-line detecting equipment and method of the welding quality for the noble-metal composite tape can realize the advantages of automated detection, labor intensity reduction and production efficiency improvement based on machine vision.
Description
Technical field
The present invention relates to a kind of production equipment of composite strip of electronic devices and components use, specifically be meant a kind of welding quality for noble-metal composite tape online detection instrument based on machine vision.
Background technology
The noble metal composite band is generally finished welding by a thin platinum bar and a flat copper substrate by automatic welding device, be widely used in transformer, electric cabinet etc., can save noble metal dosage effectively, thereby reduce the manufacturing cost of components and parts, improve the usability and the life-span of element, improved whole quality more effectively.Though this noble metal composite band has realized automated production, the mode of manual detection is still adopted in the detection of its welding quality, existing detection mode has the following disadvantages:
1, efficient is slow, is difficult to satisfy production requirement.
2, detect employing manually-operated, the precision that man's activity detects.
3, noble metal composite band size is less, and the accuracy of detection height brings constantly to workman operation, and labour intensity is big.
The welding quality of noble metal composite band finished product can't be monitored in process of production in real time, the underproof finished product band of welding quality can't be in time found.The welding quality that the noble metal composite band is good is mainly reflected in: the first, and no surface frays; The second, core material size and core material and bed material edge spacing satisfy tolerance.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art provides a kind of welding quality for noble-metal composite tape online detection instrument based on machine vision of realizing that robotization detects, reduces labour intensity, enhances productivity.
The present invention also provides a kind of welding quality for noble-metal composite tape online test method based on machine vision that realizes that robotization detects, reduces labour intensity, enhances productivity simultaneously.
In order to realize above-mentioned first purpose, the present invention designs a kind of welding quality for noble-metal composite tape online detection instrument, comprise industrial CCD digital camera, industrial lens, 1394 cards, 1394 data lines, camera support and computing machine composition, industrial lens is installed on the industrial CCD digital camera, the industrial CCD digital camera is installed on the camera support, 1394 cards are installed on computers, and the industrial CCD digital camera is connected with computing machine by 1394 data lines.
In order to improve the sharpness of the image that obtains, checkout equipment of the present invention also includes LED annular white light source and light source controller, on near the support that LED annular white light source is installed on the camera or camera is, light source controller is connected the exposure intensity of light source controller may command light source by power lead with LED annular white light source.
The industrial CCD digital camera is gathered the image of noble metal composite band to be detected, by 1394 cards and 1394 data lines image is stored in the computing machine, sets concrete detection method, can judge the quality of welding quality by analyzing the image that is extracted.
In order to realize above-mentioned second purpose, the present invention designs a kind of welding quality for noble-metal composite tape online test method, and this method comprises the steps: (1) online realtime graphic that obtains the noble metal composite band, and image is stored; (2) quality with welding quality for noble-metal composite tape is converted to the dimensional requirement between its each edge; (3) extract a two field picture of product to be checked, in the cut-away view picture one section utilizes the Canny operator that image is handled, and obtains relevant edge; (4) utilize least square method that the edge is carried out match again, obtain suitable straight line; (5) then straight line is done angular setting, obtain horizontal linear and normal pitch; (6), can judge the quality of welding quality by contrast normal pitch and standard pitch.
The present invention has the following advantages: the realtime graphic that obtains the noble metal composite band behind the finished product by CCD digital camera and industrial lens, 1394 card and 1394 data lines by high efficiency of transmission speed, send image to computing machine, by the inter-process of computing machine, timely with the information of the edge welding quality of noble metal composite band and display by computing machine.The present invention also provides use Canny operator and has been fit to computer run with principles such as least square methods, the operation of efficient, the reliable and robotization by computing machine, and the welding quality to metal compound belt detects in time.Online detection instrument of the present invention and online test method have realized that the robotization of welding quality for noble-metal composite tape detects, and have reduced labour intensity, have improved production efficiency.
Description of drawings:
Fig. 1 is a welding quality for noble-metal composite tape online detection instrument structural representation of the present invention;
Fig. 2 is a noble metal composite tape structure synoptic diagram of the present invention;
Fig. 3 is the schematic diagram of detection algorithm of the present invention;
Fig. 4 is the outline map after the present invention utilizes the Canny operator extraction;
Fig. 5 is the schematic diagram that the A among Fig. 4 of the present invention partly utilizes the least square fitting straight line;
Fig. 6 is the present invention carries out angular setting to the straight line of match a schematic diagram.
Embodiment
For the ease of those skilled in the art's understanding, structural principle of the present invention is described in further detail below in conjunction with specific embodiment and accompanying drawing:
As shown in Figure 1, the present invention is based on machine vision the welding quality for noble-metal composite tape online detection instrument structure as shown in Figure 1.This equipment is made up of industrial CCD digital camera 1, industrial lens 2, LED annular white light source 3, light source controller 4,1394 cards 5,1394 data lines 6, camera support 7 and computing machine 8.Industrial lens 2 is installed on the industrial CCD digital camera 1, and industrial CCD digital camera 1 is installed on the camera support 7, and 1394 cards 5 are installed on the computing machine 8, and industrial CCD digital camera 1 is connected with computing machine 8 by 1394 data lines 6.
In order to improve the sharpness of the image that obtains, checkout equipment of the present invention also includes LED annular white light source 3 and light source controller 4, on near the support that LED annular white light source 3 is installed on the camera or camera is, light source controller 4 is connected the exposure intensity of light source controller may command light source by power lead with LED annular white light source 3.
As shown in Figure 2, noble metal composite band to be detected is made up of substrate 9 and core material 10, and copper product is adopted in substrate 9, and core material 10 noble metal composite band are generally finished welding by a thin platinum bar and a flat copper substrate by automatic welding device
The principle of detection algorithm as shown in Figure 3.Welding quality for noble-metal composite tape detects the detection that can be exchanged into size a, b, c and d, wherein a is that substrate 9 is at last following width, c is the following width of going up of core material 10, and b is the width of the top of substrate 9 to the top of core material 10, and d is the width of the bottom of substrate 9 to the bottom of core material 10.If these sizes in the scope that meets the demands, can think that welding quality for noble-metal composite tape meets the demands.
As shown in Figure 4, utilize edge after the Canny operator extraction.Extract a two field picture, intercept wherein one section, utilize the Canny operator to carry out rim detection.Bottom's generation of finding the core material in the d size is not the segment of curve of straight line.
As shown in Figure 5, utilize the principle of least square fitting straight line.The edge that the Canny operator is extracted may not be suitable straight line, and may be some discrete points.The thick of selecting these discrete points is the center, extracts suitable pixel distance up and down, can utilize the least square method point that these are discrete to fit to straight line.If straight-line equation is
, then
As shown in Figure 6, the straight line of match is carried out the principle of angular setting.Setting up coordinate X, Y-axis, may not be level with the straight line that obtains after the least square fitting, then asks the pitch between two straight lines directly not subtract each other with ordinate, also should consider the angle factor affecting between fitting a straight line K and horizontal linear.The mean value that a, a ' and a " are respectively the angles that fitting a straight line K and substrate 9 and core material 10 edges intersect, get a, a ' and a ", then the normal pitch between two straight lines is kcosa.Utilize normal pitch and standard pitch to compare, can judge the quality of welding quality.
Related algorithm of the present invention and operation interface adopt the C# language programming to realize.
Foregoing is preferred embodiment of the present invention only, is not to be used to limit embodiment of the present invention, and those skilled in the art are according to design of the present invention, and appropriate adaptation of being made or modification all should be within protection scope of the present invention.
Claims (3)
1. welding quality for noble-metal composite tape online detection instrument, it is characterized in that: include industrial CCD digital camera (1), industrial lens (2), 1394 card (5), 1394 data lines (6), camera support (7) and computing machines (8), industrial lens (2) is installed on the industrial CCD digital camera (1), industrial CCD digital camera (1) is installed on the camera support (7), 1394 cards (5) are installed on the computing machine (8), and industrial CCD digital camera (1) is connected with computing machine (8) by 1394 data lines (7).
2. checkout equipment according to claim 1, it is characterized in that: also include LED annular white light source (3) and light source controller (4), LED annular white light source (3) is installed near the support (7) that camera (1) is gone up or camera is, and light source controller (4) is connected with LED annular white light source (3) by power lead.
3. realize the welding quality for noble-metal composite tape on-line detection method for one kind, it is characterized in that, comprise the steps:
(1) the online realtime graphic that obtains the noble metal composite band stores image;
(2) quality with welding quality for noble-metal composite tape is converted to the dimensional requirement between its each edge;
(3) extract a two field picture of product to be checked, in the cut-away view picture one section utilizes the Canny operator that image is handled, and obtains relevant edge;
(4) utilize least square method that the edge is carried out match again, obtain suitable straight line;
(5) then straight line is done angular setting, obtain horizontal linear and normal pitch;
(6), can judge the quality of welding quality by contrast normal pitch and standard pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010188172 CN101923058A (en) | 2010-05-25 | 2010-05-25 | On-line detecting equipment and method of welding quality for noble-metal composite tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010188172 CN101923058A (en) | 2010-05-25 | 2010-05-25 | On-line detecting equipment and method of welding quality for noble-metal composite tape |
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| Publication Number | Publication Date |
|---|---|
| CN101923058A true CN101923058A (en) | 2010-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010188172 Pending CN101923058A (en) | 2010-05-25 | 2010-05-25 | On-line detecting equipment and method of welding quality for noble-metal composite tape |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308525A (en) * | 2013-05-21 | 2013-09-18 | 中国科学院自动化研究所 | Online detection method and device for metal wire production |
| CN103712990A (en) * | 2014-01-16 | 2014-04-09 | 云南文山斗南锰业股份有限公司 | Detection device for detecting whether dust-removing filtering bag is damaged |
-
2010
- 2010-05-25 CN CN 201010188172 patent/CN101923058A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308525A (en) * | 2013-05-21 | 2013-09-18 | 中国科学院自动化研究所 | Online detection method and device for metal wire production |
| CN103308525B (en) * | 2013-05-21 | 2015-10-28 | 中国科学院自动化研究所 | A kind of online test method for metal wire rod production and device |
| CN103712990A (en) * | 2014-01-16 | 2014-04-09 | 云南文山斗南锰业股份有限公司 | Detection device for detecting whether dust-removing filtering bag is damaged |
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Application publication date: 20101222 |