CN107084986B - Utilize the method for carrying out retainer front and back sides image recognition with operation - Google Patents
Utilize the method for carrying out retainer front and back sides image recognition with operation Download PDFInfo
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- CN107084986B CN107084986B CN201710260505.5A CN201710260505A CN107084986B CN 107084986 B CN107084986 B CN 107084986B CN 201710260505 A CN201710260505 A CN 201710260505A CN 107084986 B CN107084986 B CN 107084986B
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- led light
- picture
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- retainer
- lampshade
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N2021/8411—Application to online plant, process monitoring
Abstract
The method for carrying out retainer front and back sides image recognition with operation is utilized the invention discloses a kind of, illumination is provided using two groups of LED light, image taking is carried out using camera, when shooting, it is separately turned on two groups of LED light and shoots two groups of pictures, after two groups of pictures are carried out binaryzations, all the points of two groups of images are carried out and operation, the image for judging will be used as with the image after operation；If with operation the result is that there was only the inner circle of first group of picture and the outer circle appearance 1 of second group of picture on entire picture, remaining point is 0, then judge that the inner circle of first group of picture of retainer is consistent with the outside diameter of second group of picture, then round fitting is carried out according to these points, it is compared with normal diameter, judges the front and back sides of retainer；The interference that the present invention effectively prevent image speck caused by workpiece and tooling surface reflection to identify feature, while requirement of the image recognition to light source is also effectively reduced, and reduce influence of the scattering of light to picture quality, to effectively prevent from judging by accident.
Description
Technical field
The present invention relates to machine components detection device technical fields, more specifically, more particularly to carrying out using with operation
The method of retainer front and back sides image recognition.
Background technique
Retainer partly wraps up all or part of rolling element, and moves therewith, to separation roller, guides rolling element
And it holds it in bearing.There is the retainer in the equipment of higher rotation speed for automotive trannsmission system etc., for size essence
The requirement of degree is very high.In process of production if dimensional accuracy is not up to standard, the face of being installed on vehicle will lead to keep retainer
The inordinate wear of frame, the problems such as influencing cage service life or traffic safety.Retainer mentioned by the present invention refer to by
The surfaces externally and internally formed after turning is spherical surface, and both ends are the metal component of plane, one in existing retainer processing technology
As be by manually differentiating front and back sides by mechanical measurement to retainer, then guarantee to carry out down one manufacturing procedure when
It waits, these retainers can enter in process equipment according to the same direction.It is produced in practice large batch of, on the one hand, by
In heavy workload, labor intensity is very high, and it is positive and negative to cut retainer it is possible that the case where failing to judge or differentiating fault for artificial cognition
Face difference is not that cannot accurately determine the front and back sides of retainer it is obvious that if the precision of measuring tool is not high enough,
The accurate differentiation rate of each the retainer front and back sides differentiated is not can guarantee exactly.
Number of patent application is that the Chinese invention of CN2015102506173 discloses a kind of retainer front and back sides discriminating gear,
The width that retainer center hole chamfering is shot by camera, when camera central axis is horizontal by 45 degree of angles,
The fillet surface of retainer center hole is just vertical with camera, and the chamfering width of camera shooting at this time is developed width,
Can determine whether the front and back sides of retainer compared with benchmark chamfering width according to the chamfering width taken at this time, identification effect is high,
Reduce the problem that artificial cognition error is big, identification effect is low.But in actual pilot production, it has been found that the program is deposited
In following problem:
1) due to the size for being inner chamfer of the positive and negative region feature of retainer, it is necessary to realize that chamfer image is clapped by 45 degree of light sources
Take the photograph realization image procossing；But chamfering is shot to the more demanding of light source, the retainer smaller for some chamferings, shooting
Image annulus is very narrow, it is easy to the case where judging by accident；
2) retainer has many greasy dirt stations on the surface of retainer during production process and automatic charging
And at the chamfering of retainer, there is unsharp situation so as to cause the image shot, it is serious to result even in annulus
Image fracture, so as to cause the situation of image recognition mistake；
3) require have lower cost when the production link due to equipment application, retainer is made up of cylinder and pneumatic clamper
Gripper crawl be put into camera in the following, a manipulator can adapt to the holding of different-diameter as much as possible again simultaneously
Frame, therefore it is easy to cause the positioning accuracy of retainer low, retainer, which is likely to occur angular deflection after being crawled, causes light source to reflect
The unstable situation of intensity, to influence the quality of image；
4) retainer may be such that the center of circle of outer circle and inner circle is not exclusively overlapped due to processing itself, only take in annulus
One section carry out know method for distinguishing cannot use, it is necessary to whole image is identified；In view of the cost factor of camera, in reality
The very high camera of resolution ratio can not be taken in the production process of border, therefore also brings difficulty to image recognition.
Simultaneously as whole system is very high to the reliability requirement of image recognition, absolutely not go out in permission production process
The case where now judging by accident, it is necessary to reduce the quantity of suspicious product, therefore the equipment can not well adapt to actual production process.
Summary of the invention
It is an object of the invention to solve the problem above-mentioned, proposing one kind can be avoided erroneous judgement, and it is positive and negative to improve retainer
Face discrimination precision utilizes the method for carrying out retainer front and back sides image recognition with operation.
The present invention using retainer front and back sides image is carried out with operation through the following technical solutions to achieve the above objectives: known
Method for distinguishing provides illumination using two groups of LED light, carries out image taking using camera, two groups of LED light are respectively end face identification
LED light and chamfering identify that LED light, two groups of LED light are annularly arranged, end face identification LED light is arranged in chamfering identification LED light
Surface, the surface of end face identification LED light is arranged in camera, and the axial line of camera and end face identify LED light and fall
The axial line of angle identification LED light is located on the same line；End face identification LED light includes the first lampshade of annular, setting the
First point light source of the ring shape on one lampshade, the non-reflective curtain of black that the first lampshade bottom is arranged in and setting are the
The filter one point light source outside and be fixed on the first lampshade；The chamfering identification LED light includes the second lampshade of annular, sets
The second point light source of the ring shape on the second lampshade is set, is arranged in inside lampshade and by the second point inside the second lampshade
The light that light source issues reflects the reflective side on 45 degree of angle vertical irradiations to retainer chamfering；
When shooting, end face identification LED light is first turned on, chamfering is closed and identifies LED light, control camera shoots first group
Picture turns off end face identification LED light, opens chamfering and identifies LED light, control camera shoots second group of picture, by first
After group picture carries out binaryzation with second group of picture, all the points progress and operation to two groups of images, by with the image after operation
As the image for being used to judge；If with operation the result is that there was only the inner circle and second group of picture of first group of picture on entire picture
Outer circle occur 1, remaining point be 0, then judge the inner circle of first group of picture of retainer and the outside diameter one of second group of picture
It causes, then carries out round fitting according to these points, compared according to the geometric dimension of the circle identified with normal diameter, judge to protect
Hold the front and back sides of frame upper surface；If with operation the result is that in addition to the inner circle and second group of picture of first group of picture on entire picture
Outer circle outside other positions occur 1, then without judging result, so carry out retainer itself whether He Ge detection.
Using the device for carrying out retainer front and back sides image recognition with operation, front and back sides of retainer for identification, including
End face identifies LED light, chamfering identification LED light and camera, and end face identification LED light and chamfering identification LED light are annularly arranged,
End face identification LED light is arranged in the surface of chamfering identification LED light, and the surface of end face identification LED light is arranged in camera, and
The axial line of camera identifies that LED light and the axial line of chamfering identification LED light are located on the same line with end face；End face identification
LED light includes the first lampshade of annular, the first point light source of the ring shape being arranged on the first lampshade, setting in the first lampshade
The filter for the black of bottom non-reflective curtain and being arranged on the outside of the first point light source and being fixed on the first lampshade；It is described fall
Angle identification LED light includes the second lampshade of annular, the second point light source of the ring shape being arranged on the second lampshade, setting in lamp
Cover is internal and the light of the second point light source sending inside the second lampshade is reflected 45 degree of angle vertical irradiations to retainer chamfering
Upper reflective side.
The beneficial effects of the present invention are:
1, the present invention shoots two groups of pictures of end face and chamfering using one group of camera respectively, is known by lighting end face respectively
Other LED light and chamfering identify this two groups of light sources of LED light to realize the shooting of end face and chamfering, will not generate mutually when not only shooting
It influences, and due to comparing two factors simultaneously, can largely improve the accuracy of judgement.
2, the present invention after the binaryzation of two pictures using comparing, since end face and chamfering are using different angle
Light source, under the effect of different angle light source, two images circle is 1 in addition to the binary value of overlapping region, and the value of remaining point is equal
It is 0, the interference for effectivelying prevent image speck caused by workpiece and tooling surface reflection to identify feature, while figure is also effectively reduced
Requirement as identification to light source, and influence of the scattering of light to picture quality is reduced, to effectively prevent from judging by accident.
3, the present invention reduces hair in the first lampshade bottom setting non-reflective curtain of black of end face identification LED light as far as possible
Penetrate light, prevent chamfering identification LED light light shine directly into end face identification LED light lampshade bottom reflected, prevent with
The reflective accuracy for leading to chamfering picture shooting in retainer end face caused by this.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the present invention using the device for carrying out retainer front and back sides image recognition with operation.
Fig. 2 is the structural schematic diagram of identification LED light in end face of the present invention.
Fig. 3 is the structural schematic diagram of chamfering identification LED light of the present invention.
In figure, 1- retainer, 2- chamfering identification LED light, the end face 3- identify LED light, 4- camera, the first lampshade of 5-, 6-
First point light source, the non-reflective curtain of 7- black, 8- filter, the second lampshade of 9-, the second point light source of 10-, the reflective side 11-.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
As shown in Fig. 1 ~ 3, the front and back sides of retainer 1, including end face identification LED light 3, chamfering identification LED light 2 for identification
With camera 4, end face identifies that LED light 3 and chamfering identification LED light 2 arrangement annular in shape, end face identification LED light 3 are arranged in chamfering
Identify the surface of LED light 2, the surface of end face identification LED light 3, and the axial line of camera 4 and end is arranged in camera 4
The axial line of face identification LED light 3 and chamfering identification LED light 2 is located on the same line；End face identifies that LED light 3 includes annular
First lampshade 5, the ring shape being arranged on the first lampshade 5 the first point light source 6, the black of 5 bottom of the first lampshade is set
Non-reflective curtain 7 and the filter 8 that 6 outside of the first point light source is set and is fixed on the first lampshade 5；The chamfering identification
LED light 2 includes the second lampshade 9 of annular, the second point light source 10 of the ring shape being arranged on the second lampshade 9, setting in lamp
It covers light that is internal and issuing the second point light source 10 inside the second lampshade 9 and reflects 45 degree of angle vertical irradiations to retainer 1
Reflective side 11 in chamfering.
The light that end face identification LED light 3 issues is light downwards annular in shape, by the anti-of 1 upper surface of retainer
It is shone directly on camera after penetrating, when arranging end face identification LED light 3, the setting of its 5 lower edge of the first lampshade will guarantee
After the light that identification LED light 3 issues in end face projects vertically, it will not shine directly into chamfering identification LED light 2.
The light that chamfering identifies that LED light 2 issues is oblique light ray annular in shape；Since the bottom of end face identification LED light 3 is
The non-reflective curtain 7 of black, even if so the light of chamfering identification LED light 2 is irradiated to black after the reflection of the chamfering of retainer
Non-reflective curtain 7 also can directly be absorbed by the non-reflective curtain 7 of black, without being reflected on the end face of retainer 1, to avoid
Influence to judging result.
Using the method for carrying out retainer front and back sides image recognition with operation, illuminations are provided using two groups of LED light, using taking the photograph
As the progress image taking of head 4, two groups of LED light are respectively end face identification LED light 3 and chamfering identification LED light 2, and two groups of LED light are in
Annular configuration, end face identification LED light 3 are arranged in the surface of chamfering identification LED light 2, and the setting of camera 4 identifies LED in end face
The surface of lamp 3, and the axial line of camera 4 identifies that LED light 3 and chamfering identify the axial line of LED light 2 positioned at same with end face
On straight line；End face identification LED light 3 includes the first lampshade 5 of annular, the first of a ring shape be arranged on the first lampshade 5
The non-reflective curtain 7 of point light source 6, the black that 5 bottom of the first lampshade is arranged in and setting in 6 outside of the first point light source and are fixed on
Filter 8 on first lampshade 5；The chamfering identification LED light 2 includes the second lampshade 9 of annular, is arranged on the second lampshade 9
A ring shape the second point light source 10, be arranged in inside lampshade and issue the second point light source 10 inside the second lampshade 9
Light reflection 45 degree of angle vertical irradiations to 1 chamfering of retainer on reflective side 11.
When shooting, end face identification LED light 3 is first turned on, chamfering is closed and identifies LED light 2, control camera 4 shoots the
One group of picture turns off end face identification LED light 3, opens chamfering and identifies LED light 2, and control camera 4 shoots second group of picture,
After first group of picture and second group of picture are carried out binaryzation, all the points of two groups of images are carried out and operation, will with after operation
Image as being used to the image that judges；If with operation the result is that there was only the inner circle and second of first group of picture on entire picture
The outer circle of group picture occurs 1, remaining point is 0, then judges the inner circle of 1 first group of picture of retainer and the outer circle of second group of picture
Diameter is consistent, then carries out round fitting according to these points, is compared, sentenced with normal diameter according to the geometric dimension of the circle identified
The front and back sides of disconnected 1 upper surface of retainer out；If with operation the result is that in addition to the inner circle and of first group of picture on entire picture
Other positions outside the outer circle of two groups of pictures occur 1, then whether without judging result, and then it is qualified to carry out retainer 1 itself
Detection.
Above-described embodiment is presently preferred embodiments of the present invention, is not a limitation on the technical scheme of the present invention, as long as
Without the technical solution that creative work can be realized on the basis of the above embodiments, it is regarded as falling into the invention patent
Rights protection scope in.
Claims (1)
1. utilizing the method for carrying out retainer front and back sides image recognition with operation, it is characterised in that: provide photograph using two groups of LED light
It is bright, image taking is carried out using camera (4), two groups of LED light are respectively end face identification LED light (3) and chamfering identification LED light
(2), two groups of LED light are annularly arranged, end face identification LED light (3) is arranged in the surface of chamfering identification LED light (2), camera shooting
Head (4) setting is in the surface of end face identification LED light (3), and the axial line of camera (4) and end face identify LED light (3) and fall
The axial line of angle identification LED light (2) is located on the same line；End face identification LED light (3) include annular the first lampshade (5),
The first point light source (6) for the ring shape being arranged on the first lampshade (5), the black being arranged in the first lampshade (5) bottom is not anti-
Light curtain cloth (7) and setting are in the filter (8) the first point light source (6) outside and be fixed on the first lampshade (5)；The chamfering
Identification LED light (2) includes the second point light source of the second lampshade (9) of annular, the ring shape being arranged on the second lampshade (9)
(10), it is arranged inside lampshade and the light that internal the second point light source (10) of the second lampshade (9) issues is reflected into 45 degree of angles
Reflective side (11) on vertical irradiation to retainer (1) chamfering；
When shooting, end face identification LED light (3) is first turned on, closes chamfering identification LED light (2), control camera (4) is shot
First group of picture turns off end face identification LED light (3), opens chamfering identification LED light (2), and control camera (4) shoots the
Two groups of pictures, after first group of picture and second group of picture are carried out binaryzation, all the points progress and operation to two groups of images will
With the image after operation as the image for being used to judge；If with operation the result is that only having in first group of picture on entire picture
The outer circle of circle and second group of picture occurs 1, remaining point is 0, then judges the inner circle of (1) first group of picture of retainer and second group
The outside diameter of picture is consistent, then round fitting is carried out according to these points, according to the geometric dimension and standard straight of the circle identified
Diameter compares, and judges the front and back sides of retainer (1) upper surface；If with operation the result is that in addition to the first group picture on entire picture
Other positions outside the inner circle of piece and the outer circle of second group of picture occur 1, then without judging result, and then carry out retainer
(1) itself whether He Ge detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710260505.5A CN107084986B (en) | 2017-04-20 | 2017-04-20 | Utilize the method for carrying out retainer front and back sides image recognition with operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710260505.5A CN107084986B (en) | 2017-04-20 | 2017-04-20 | Utilize the method for carrying out retainer front and back sides image recognition with operation |
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| Publication Number | Publication Date |
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| CN107084986A CN107084986A (en) | 2017-08-22 |
| CN107084986B true CN107084986B (en) | 2019-07-09 |
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| CN201710260505.5A Active CN107084986B (en) | 2017-04-20 | 2017-04-20 | Utilize the method for carrying out retainer front and back sides image recognition with operation |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255452B (en) * | 2017-04-20 | 2019-07-09 | 浙江工业大学 | Double LED light formula retainer front and back sides image-recognizing method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5253986B2 (en) * | 2008-12-04 | 2013-07-31 | Ｊｕｋｉ株式会社 | Button recognition device and button recognition method |
| DE102009058215B4 (en) * | 2009-12-15 | 2014-12-18 | Aktiebolaget Skf | Method and device for surface inspection of a bearing component |
| CN203287330U (en) * | 2013-06-02 | 2013-11-13 | 杭州欧谱洛博自动化技术有限公司 | Full-angle vision comprehensive detection system for appearance of bearing roller |
| CN203824524U (en) * | 2014-04-16 | 2014-09-10 | 杭州欧谱洛博自动化技术有限公司 | Detection device detecting roller chamfer and end face simultaneously |
| CN104165653B (en) * | 2014-08-27 | 2016-06-08 | 洛阳久德轴承模具技术有限公司 | For gathering device and the acquisition method thereof of bearing roller end face and chamfering image |
| CN104897672B (en) * | 2015-05-15 | 2017-08-25 | 浙江工业大学 | A kind of retainer positive and negative discriminating gear |
| CN105092577B (en) * | 2015-05-15 | 2017-08-01 | 浙江工业大学 | A kind of retainer positive and negative discriminating gear |
| CN207248761U (en) * | 2017-04-20 | 2018-04-17 | 浙江工业大学 | Utilize the device that retainer positive and negative image recognition is carried out with computing |
| CN107255452B (en) * | 2017-04-20 | 2019-07-09 | 浙江工业大学 | Double LED light formula retainer front and back sides image-recognizing method |
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