CN1434288A - Appearance delection device and its detection method - Google Patents
Appearance delection device and its detection method Download PDFInfo
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- CN1434288A CN1434288A CN 02102359 CN02102359A CN1434288A CN 1434288 A CN1434288 A CN 1434288A CN 02102359 CN02102359 CN 02102359 CN 02102359 A CN02102359 A CN 02102359A CN 1434288 A CN1434288 A CN 1434288A
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- appearance
- determinand
- image
- length
- gauge points
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention provides a kind of appearance detecting equipment and the detecting method. The equipment includes: the image monitoring equipment used to monitor the appearance of the measured object; the light source; and the light-reinforcing equipment; the method includes: (a) provide a measured object; (b) monitor the image of the object; (c) figure out the average line of the margin of the image; (d) choose multiple measured points on the margin of the image and figure out the lengths between the points and the average line; (e) use the lengths to figure out the standard square difference of the average line; (f) respectively add the standard square difference onto the lengths to get multiple reinforced values and use the valve to judge if the appearance accords with the specification.
Description
Technical field
The present invention relates to a kind of appearance detection equipment and its detection method, particularly relates to a kind of appearance detection equipment and its detection method that can remove the passive device of bad order product really.
Background technology
Passive device (for example, MLCC) after completing, needs to test electrical property and be packaged in shipment in the paper tape through the Package Testing machine; The packaging machine detectable product electrical property that on the packing of passive device, uses at present and with its packing; but can not detect product appearance; therefore; the product of bad order is also often sneaked into shipment in the packing; cause the reduction of shipment yield; and in order to reach the detection of outward appearance, mostly reach its purpose at present in the mode of artificial sampling observation.
Artificial sampling observation needs to do with ready-made suit vision system or in the mode of visual processes, and it can only be used as judging the purpose of outward appearance detection by the area of calculating electrode and body, size, but this mode can be inapplicable because of following several reasons:
1. comparatively loose during being limited in outward appearance and detecting of area and size, be that defectives such as inner some contaminations, breakage and edge be bad are only the part that need comparatively be concerned about on the contrary, electrode for example shown in Figure 1 will be if therefore simple usable floor area and size calculation can't detect defective products fully;
2. for as shown in Figure 2 example, though left electrode broad, because of the breakage of centre can make its area that measures still meet the requirements; In addition, when product deviation area measurement zone was too many, the area of measuring will have error, because the measuring area zone can't be adjusted automatically with product;
3. if the length and width of each position of electrode are adopted the method detection of Fig. 3, its number that X, Y direction setting will detect in electrode, then system can obtain the length of each section of electrode automatically, but the shortcoming of the method is: be example with Fig. 3, the width of each section is all in the scope that requires in the electrode, but in fact Zhong Jian part has produced the phenomenon of distortion indent, so should be considered as defective products; Fig. 4 then is the example of another erroneous judgement; And
4. because product itself has rough phenomenon, the therefore common resulting image of polishing mode is unsatisfactory, so the probability of erroneous judgement is quite high, as shown in Figure 5.
Summary of the invention
In view of this, the objective of the invention is provides a kind of appearance detection equipment and its detection method that is applicable in order to address the above problem, and it can remove the bad order product of passive device really, and the yield of shipment is improved greatly.
In the present invention, provide a kind of appearance delection device, comprising: in order to monitor the image monitoring device of determinand outward appearance: in order to the light source of light to determinand to be provided; And in order to the light reinforcing device of reinforcement light source.
In addition, in the present invention, light source to be being that the mode of inclination is provided with respect to image monitoring device, and the light reinforcing device is reflective mirror, and reflective mirror is semi-circular, and in addition, image monitoring device is a charge-coupled device (CCD).
In addition, in the present invention, provide a kind of appearance detecting method, comprising: a determinand (a) is provided; (b) image of monitoring determinand; (c) calculate the average line of edge of image; (d) on the image border, get a plurality of gauge points, and calculate the length of gauge point to average line; (e) the utilization measuring point is calculated the standard variance of average line to the length of average line; And (f) gauge point to the length of average line is added standard variance respectively, obtaining a plurality of reinforcement values, and utilize reinforcement value to judge whether the outward appearance of determinand is up to specification.
In addition, in the present invention, appearance detecting method also comprises: horizontal direction critical field value (g) is provided, the gauge point of utilization in above-mentioned steps (d), calculating is positioned at the length between two gauge points on the same horizontal line, length and horizontal direction critical field value are compared, judge whereby whether the inside of determinand has defective.
In addition, in the present invention, appearance detecting method also comprises: the vertical direction critical field value vertical with the measurement direction of horizontal direction critical field value (h) is provided, the gauge point of utilization in above-mentioned steps (d), calculating is positioned at the length between two gauge points on the same perpendicular line vertical with horizontal line, length and vertical direction critical field value are compared, judge whereby whether the inside of determinand has defective.
In addition, in the present invention, appearance detecting method also comprises: indicated range value in (i) providing, the image of utilization in above-mentioned steps (b), the interior defective of monitoring determinand compares interior defective and interior indicated range value, judges whereby whether the interior defective of determinand is up to specification.
Description of drawings
Fig. 1 and 2 is the synoptic diagram of the open defect of expression passive device;
Fig. 3 and 4 is that expression is caused the example of judging by accident by known method;
Fig. 5 is that expression is caused the example of judging by accident by well known device;
Fig. 6 is the synoptic diagram of expression appearance delection device of the present invention;
Fig. 7 is expression makes image quality improve by a device of the present invention example; And
Fig. 8 a-8d is the synoptic diagram that shows appearance detecting method of the present invention.Symbol description
The appearance delection device of 100～passive device,
10～image monitoring device,
20～light source,
30～light reinforcing device,
31～reflective mirror,
40～bogey,
401～supporting part,
200～passive device.
Below, with reference to the embodiment of description of drawings appearance detection equipment and its detection method of the present invention.
With reference to figure 6, appearance delection device 100 of the present invention comprises image monitoring device 10, light source 20, light reinforcing device 30 and bogey 40; Image monitoring device 10 can be positioned over the outward appearance of the passive device 200 on the supporting part 401 of bogey 40 in order to monitoring, and it can be charge-coupled device (CCD).
The appearance detecting method of passive device of the present invention is described below with reference to Fig. 8 a-8d, this method comprises the following steps: at first passive device 200 to be arranged on the supporting part 401 of bogey 40, then monitor the image of passive devices 200 by image monitoring device 10, and calculate the average line (Avg line is shown in Fig. 8 a) of edge of image; On the image border, get a plurality of gauge points afterwards, and calculate gauge point to the length of average line and (shown in the arrow among Fig. 8 a, and be respectively X
0, X
1, X
2... X
n), utilization measuring point to the length of average line is calculated the standard variance of average line, and (the right in Fig. 8 a is for just, and the left side is for negative, and the formula of standard variance is X
Dev=√ [(X
0 2+ X
1 2+ X
2 2+ ...+X
n 2)/n]); Gauge point to the length of average line added respectively at last for the edge roughness characteristic is strengthened standard variance (that is, | X
0|+X
Dev), to obtain a plurality of reinforcement value (X
W0, X
W1, X
W2... X
Wn), and utilize reinforcement value to judge whether the outward appearance of passive device is up to specification, that is can judge too serious situation of the whether too coarse or concave, convex of product edge by the number that reinforcement value surpasses permissible range.
In addition, after the defective at edge has been calculated, calculate the length value of the inner X of product, each position of Y direction again, at first, one horizontal direction critical field value is provided, and utilizes the gauge point in above-mentioned steps, calculate the length between two gauge points that are positioned on the same horizontal line, length and horizontal direction critical field value are compared, judge whereby whether the inside of passive device has defective; The one vertical direction critical field value vertical with the measurement direction of horizontal direction critical field value then is provided, the gauge point of utilization in above-mentioned steps, calculating is positioned at the length between two gauge points on the same perpendicular line vertical with horizontal line, length and vertical direction critical field value are compared, judge whereby whether the inside of passive device has defective; Therefore, when inner defectiveness existed, its length will inevitably be less, and shown in Fig. 8 b, if instead the product evagination, its length value will inevitably be bigger, shown in Fig. 8 c, can detect inner defective product whereby.
In addition, can utilize the Blob function of Matrix Imaging Library (MIL6.1), find out the part of the long and narrow defective of tool, so can remedy the shortcoming that long and narrow part is difficult to judge at product inside; Auspicious it, shown in Fig. 8 d, provide indicated range value in, utilize the image in above-mentioned steps, the interior defective of monitoring passive device with interior defective and the comparison of interior indicated range value, judges whereby whether the interior defective of passive device up to specification.
By apparatus and method of the present invention, can remove the bad order product really, and the yield of shipment is improved greatly.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; those of ordinary skill in any present technique field; without departing from the spirit and scope of the present invention; can make various changes and remodeling, so protection scope of the present invention should be as the criterion with the content that claim was defined.
Claims (9)
1. an appearance delection device is characterized in that, comprising:
One image monitoring device in order to the outward appearance of monitoring a determinand;
One in order to provide the light source of light to this determinand; And
One light reinforcing device in order to this light source of reinforcement.
2. appearance delection device as claimed in claim 1 is characterized in that:
This light source is being that the mode of inclination is provided with respect to this image monitoring device.
3. appearance delection device as claimed in claim 1 is characterized in that:
This light reinforcing device is a reflective mirror.
4. appearance delection device as claimed in claim 3 is characterized in that:
This reflective mirror is semi-circular.
5. appearance delection device as claimed in claim 1 is characterized in that:
This image monitoring device is a charge-coupled device (CCD).
6. an appearance detecting method is characterized in that, comprising:
(a) provide a determinand;
(b) monitor the image of this determinand;
(c) calculate the average line of this edge of image;
(d) on this image border, get a plurality of gauge points, and calculate the length of these gauge points to this average line;
(e) utilize these gauge points to calculate the standard variance of this average line to the length of this average line; And
(f) these gauge points to the length of this average line is added this standard variance respectively, obtaining a plurality of reinforcement values, and utilize these reinforcement values to judge whether the outward appearance of this determinand is up to specification.
7. appearance detecting method as claimed in claim 6 is characterized in that, also comprises:
(g) provide a horizontal direction critical field value, utilization these gauge points in above-mentioned steps (d), calculating is positioned at the length between two gauge points on the same horizontal line, with this length and this horizontal direction critical field value relatively, judges whereby whether the inside of this determinand has defective.
8. appearance detecting method as claimed in claim 7 is characterized in that, also comprises:
(h) provide a vertical direction critical field value vertical with the measurement direction of this horizontal direction critical field value, utilization these gauge points in above-mentioned steps (d), calculating is positioned at the length between two gauge points on the same perpendicular line vertical with this horizontal line, this length and this vertical direction critical field value are compared, judge whereby whether the inside of this determinand has defective.
9. appearance detecting method as claimed in claim 8 is characterized in that, also comprises:
(i) provide indicated range value in, utilize this image in above-mentioned steps (b), monitor the interior defective of this determinand, should in defective with should in the indicated range value compare, judge whereby whether the interior defective of this determinand up to specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02102359 CN1194219C (en) | 2002-01-23 | 2002-01-23 | Appearance delection device and its detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02102359 CN1194219C (en) | 2002-01-23 | 2002-01-23 | Appearance delection device and its detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1434288A true CN1434288A (en) | 2003-08-06 |
| CN1194219C CN1194219C (en) | 2005-03-23 |
Family
ID=27627533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02102359 Expired - Fee Related CN1194219C (en) | 2002-01-23 | 2002-01-23 | Appearance delection device and its detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1194219C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557109A (en) * | 2018-12-29 | 2019-04-02 | 中国肉类食品综合研究中心 | Freeze the detection method and device of meat packed state |
-
2002
- 2002-01-23 CN CN 02102359 patent/CN1194219C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109557109A (en) * | 2018-12-29 | 2019-04-02 | 中国肉类食品综合研究中心 | Freeze the detection method and device of meat packed state |
| CN109557109B (en) * | 2018-12-29 | 2021-07-30 | 中国肉类食品综合研究中心 | Method and device for detecting packaging state of frozen meat |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1194219C (en) | 2005-03-23 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Suzhou Darfon Electronic Co., Ltd. Assignor: Dafang Electronics Co., Ltd. Contract fulfillment period: 2004.4.23 to 2017.3.14 contract change Contract record no.: 2009990000827 Denomination of invention: Appearance delection device and its detection method Granted publication date: 20050323 License type: Exclusive license Record date: 2009.7.31 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2004.4.23 TO 2017.3.14; CHANGE OF CONTRACT Name of requester: SUZHOU DAFANG ELECTRONICS CO., LTD. Effective date: 20090731 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050323 Termination date: 20160123 |
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| EXPY | Termination of patent right or utility model |