CN203616259U - Detection device with dimmer - Google Patents
Detection device with dimmer Download PDFInfo
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- CN203616259U CN203616259U CN201320793513.3U CN201320793513U CN203616259U CN 203616259 U CN203616259 U CN 203616259U CN 201320793513 U CN201320793513 U CN 201320793513U CN 203616259 U CN203616259 U CN 203616259U
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- dimmer
- light source
- pick
- annular light
- imaging device
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model provides a detection device with a dimmer. The detection device comprises an annular light source, the dimmer, a support device, one or more image formation devices, wherein the annular light source emits annular irradiation light along the self annular structure; the support device supports a product to be detected, and can reflect the irradiation light emitted by the annular light source; the dimmer is located between the product to be detected and the annular light source to block the light emitted by the annular light source from radiating directly the product to be detected; the image formation devices are arranged at side part of the product to be detected, and face towards the product to be detected so as to shoot images of the product to be detected. The detection device can detect the damage of the side surface of the product quickly and accurately.
Description
Technical field
The utility model relates to Machine Vision Detection field, is specifically related to a kind of pick-up unit with dimmer.
Background technology
At present, along with the development in Machine Vision Detection field, in process of producing product, more and more depend on automatic detection device and carry out the automatic detection of product quality.
But can there is undetected situation in current optical detection apparatus in the time that the side of aluminium-plastic combined cover or aluminium lid or other objects is detected.At present also there are some external automatic checkout equipment manufacturer and ac.cns, just in active research, this product improved to detection.But, all do not obtain desirable effect at present.
Existing bottle cap side face defects detection scheme generally adopts annular light source to throw light on to examined object, to can guarantee that the illumination of 360 ° of sides is even.Fig. 1 has schematically drawn a kind of common pick-up unit detecting for bottle cap.As shown in Figure 1, this pick-up unit adopts the annular light source of top to carry out direct irradiation to bottle cap to be detected, then gathers from different perspectives respectively the image of the different sides of bottle cap by four cameras.Technician or the image processor bottle cap based on collecting the from different directions not image of ipsilateral judges whether bottle cap exists cut, spot equivalent damage.
, can receive all directions light in the side of this lighting system lower bottle cap or other objects under test, cut inside can be illuminated, cause that cut color becomes with the same bright around, cannot in camera, significantly present.
On the contrary, if do not adopt annular light source to throw light on, and adopt the light source of several separation to throw light on, will be even not to the illumination of object side, easily to cause normal product erroneous judgement be improper product or cause local None-identified.
To sum up, various pick-up units both domestic and external all can not carry out effectively the side of product, detect accurately at present.
Utility model content
For the problems referred to above, the utility model provides a kind of pick-up unit with dimmer, and this device can detect quickly and accurately to the degree of impairment of product side.
Particularly, the utility model provides a kind of pick-up unit with dimmer, and described pick-up unit comprises: annular light source, dimmer, bracing or strutting arrangement, one or more imaging device,
Described annular light source sends annular light irradiation along the loop configuration of himself;
Described bracing or strutting arrangement carrying examined product, and described bracing or strutting arrangement can reflect the light irradiation that described annular light source sends;
Described dimmer, between described examined product and described annular light source, stops light that described annular light source the sends direct irradiation to described examined product;
Described one or more imaging device is positioned at the sidepiece of described examined product, towards described examined product to take the image of described examined product.
In a kind of implementation of the present utility model, described dimmer is in the form of annular discs, is fixed on described annular light source below.
In another kind of implementation of the present utility model, described pick-up unit also comprises dimmer coupling arrangement, and described dimmer coupling arrangement one end is fixed on the support at described annular light source center, and the other end is fixed on the center of the upper surface of described dimmer.
In another kind of implementation of the present utility model, the extended line of the line between any point in the outer rim of described annular light source and the corresponding point of the outer rim of described dimmer drops on outside described surveyed area.
In another kind of implementation of the present utility model, described examined product is placed in surveyed area, described surveyed area be positioned at described dimmer center under.
In another kind of implementation of the present utility model, the number of described imaging device is multiple, and multiple imaging devices are evenly placed around surveyed area, from different perspectives described examined product are taken.
In another kind of implementation of the present utility model, described pick-up unit also comprises processor, described processor is connected with each described imaging device, to receive the image of the described examined product that each described imaging device gathered, and surperficial situation based on examined product described in described image detection.
In another kind of implementation of the present utility model, described pick-up unit also comprises display device, and described display device is connected with each imaging device, and receives and show the image that described imaging device is taken from described imaging device.
In another kind of implementation of the present utility model, the external diameter of described dimmer is less than the external diameter of described annular light source.Dimmer in the utility model can be made up of any lighttight material.Preferably, the position of this dimmer, size and shape are adjustable.
Processor in the utility model can be general computing machine or other image processing equipment.Pick-up unit in the utility model can also comprise that other are peripheral auxiliary, to assist imaging device, light source and dimmer to cooperatively interact better.
Accompanying drawing explanation
Below in conjunction with accompanying drawing of the present utility model, specific embodiment of the utility model is described in detail:
Fig. 1 is the schematic diagram of the common pick-up unit detecting for bottle cap;
Fig. 2 is according to the structural representation of the pick-up unit of an embodiment of the present utility model;
Fig. 3 is the light path comparison diagram that adopts dimmer and do not adopt the pick-up unit of dimmer, and wherein, in figure, left part has adopted dimmer, and in figure, right side part does not adopt dimmer.
Embodiment
Fig. 2 is according to the structural representation of the pick-up unit of an embodiment of the present utility model.As shown in Figure 2, the pick-up unit in the present embodiment comprises annular light source 1, dimmer 2, bracing or strutting arrangement 4, one or more imaging device 5.
In the present embodiment, annular light source 1 is placed in examined product top, sends annular light irradiation along the loop configuration of himself, and the center of annular is just to examined product (can suitably adjust according to the structure of production line).Annular light source 1 can adopt the various light sources such as circular lamp, annular LED array.The support of annular light source can be arranged on the central authorities of ring.
Dimmer 2 adopts disc-shaped structure, that is, adopt lighttight disk as dimmer, and this disk is fixed on the support of annular light source 1 by coupling arrangement 6.In one implementation, dimmer 2 combines with coupling arrangement 6.
It should be appreciated by those skilled in the art that and can also by other means disk be fixed between annular light source and examined product 3.Preferably, the external diameter of disk is less than the external diameter of annular light source.More preferably, the extended line of the line between the corresponding point of the outer rim of any point in the outer rim of annular light source and dimmer drops on outside described surveyed area.In other words, the size of disk and position will guarantee that not direct projection of light that annular light source sends is to examined product.
Bracing or strutting arrangement 4 carries examined product, and bracing or strutting arrangement 4 can reflect the light irradiation that described annular light source sends.For example, bracing or strutting arrangement 4 can be for having the conveyer of certain reflecting power.After the light irradiation that annular light source 1 sends is irradiated on conveyer, then reflex on the side of examined product, to examined product is carried out to indirect lighting.The reflecting surface of bracing or strutting arrangement 4 is towards annular light source 1, and its reflecting surface can be diffuse surface or fully reflecting surface.
Common one or more imaging device 5 is positioned at the sidepiece of examined product (or detection position).In the present embodiment, adopt four imaging devices from four different angles, examined product to be taken, four imaging devices are spent at cardinal principle interval 90 each other, and such four imaging devices can photograph the image of each side of examined product.Alternatively, each imaging device is fixed on the base of equipment by an imaging pedestal 7 and back shaft 8.Imaging pedestal 7 can change attitude with respect to back shaft 8, to be adjusted to image angle degree.
Pick-up unit in the present embodiment can also comprise processor (not shown), and this processor is preferably image processor, and image processor can be connected with each imaging device, to receive the image of the examined product that each imaging device gathered.Image processor can detect based on image the surperficial situation of described examined product.
Alternatively, the pick-up unit in the present embodiment also comprises display device (not shown), and display device is connected with each imaging device, for the image that shows that described imaging device is taken.Staff or image processor can detect the side of examined product based on this image.
Fig. 3 is the light path comparison diagram that adopts dimmer and do not adopt the pick-up unit of dimmer, and wherein, in figure, left part has adopted dimmer, and in figure, right side part does not adopt dimmer.As shown in Figure 3, in figure, topmost is annular light source 1, and because this view is the front elevation of pick-up unit, so in the drawings, annular light source 1 is only rendered as a rectangle, wherein, dotted line both sides are luminous component, and center section is the hollow of annular.
Left side in the drawings, the light part that annular light source 1 sends is blocked by dimmer 2, and another part incides on bracing or strutting arrangement.Particularly, the light 11 that annular light source 1 sends towards examined product 3 is blocked by dimmer 2, and after the light 13 that annular light source 1 sends towards bracing or strutting arrangement 4 is incident on bracing or strutting arrangement 4, after bracing or strutting arrangement 4 reflections, be radiated on the side of examined product 3.Because the light that examined product 3 sides are irradiated is to reflect through bracing or strutting arrangement 4, if examined product side has cut or other damages,, in the time that imaging device 5 irradiates examined product from the side, the brightness of this cut or injury region will have obvious difference with other harmless injuries.
Particularly, in Fig. 3, as an example of aluminium lid example, examined product is described.As can be seen from the figure, after light 13 is radiated on the cut of aluminium lid side, most of reflection downwards, rather than reflect towards imaging device 5.And if light is incident on the aluminium lid side that there is no scuffing after bracing or strutting arrangement 4 reflections, this reflected light major part will incide through aluminium lid offside reflection in the imaging device 5 in left side.So in the time that the imaging device 5 in left side irradiates examined product from the side, the brightness of this cut or injury region will have obvious difference with other harmless injuries
On the contrary, from the right side of Fig. 3, if there is no dimmer 2, the light 12 that annular light source 1 sends towards product to be measured is directly incident on aluminium lid side.And if aluminium lid side exists damage, the light that is incident on injury region probably reflects to imaging device 5; If aluminium lid side is not damaged, this light can reflect to bracing or strutting arrangement 4, and therefore, from the image of the taken aluminium lid side of the imaging device 5 on right side, the brightness that scratches part is brighter, little with the part difference that does not have to scratch.Therefore be difficult to separate aluminium lid side based on image area and whether have scuffing.
Therefore, in sum, adopt dimmer 2 to carry out to the surface of aluminium lid side result that damage check obtains and with not adopting dimmer 2, the surface of aluminium lid side is carried out compared with result that damage check obtains, with the obvious advantage.
In the present embodiment, image processor can compare the image of the image of gathered examined product and standardized product to judge whether have damage or can carry out feature extraction to the image of gathered examined product, and then the feature based on extracted judges whether to exist damage.
In addition, because the device in the present embodiment is generally used in production line, the light angle of light source and the position of camera are subject to the restriction of existing machinery structure in production line, therefore, in concrete application, can suitably adjust the position relationship between bracing or strutting arrangement and imaging device, to adapt to site environment.
It should be noted that; the shape of all parts in accompanying drawing of the present utility model is all schematic; there is some difference not get rid of itself and its true shape; accompanying drawing is only for principle of the present utility model is described, and the detail of parts shown in figure is the restriction to utility model protection scope not.Those skilled in the art also should be appreciated that, above-described embodiment is only also the explanation to schematic implementation of the present utility model, not the restriction to the utility model scope.
Claims (9)
1. have a pick-up unit for dimmer, described pick-up unit comprises: annular light source, dimmer, bracing or strutting arrangement, one or more imaging device, it is characterized in that,
Described annular light source sends annular light irradiation along the loop configuration of himself;
Described bracing or strutting arrangement carrying examined product, and described bracing or strutting arrangement can reflect the light irradiation that described annular light source sends;
Described dimmer, between described examined product and described annular light source, stops light that described annular light source the sends direct irradiation to described examined product;
Described one or more imaging device is positioned at the sidepiece of described examined product, towards described examined product to take the image of described examined product.
2. pick-up unit according to claim 1, is characterized in that, described dimmer is in the form of annular discs, is fixed on described annular light source below.
3. pick-up unit according to claim 2, is characterized in that, also comprises dimmer coupling arrangement, and described dimmer coupling arrangement one end is fixed on the support at described annular light source center, and the other end is fixed on the center of the upper surface of described dimmer.
4. pick-up unit according to claim 3, is characterized in that, the extended line of the line between any point in the outer rim of described annular light source and the corresponding point of the outer rim of described dimmer drops on outside described surveyed area.
5. pick-up unit according to claim 1, is characterized in that, described examined product is placed in surveyed area, described surveyed area be positioned at described dimmer center under.
6. pick-up unit according to claim 1, is characterized in that, the number of described imaging device is multiple, and multiple imaging devices are evenly placed around surveyed area, from different perspectives described examined product are taken.
7. pick-up unit according to claim 1, it is characterized in that, described pick-up unit also comprises processor, described processor is connected with each described imaging device, to receive the image of the described examined product that each described imaging device gathered, and surperficial situation based on examined product described in described image detection.
8. pick-up unit according to claim 1, is characterized in that, also comprises display device, and described display device is connected with each imaging device, and receives and show the image that described imaging device is taken from described imaging device.
9. pick-up unit according to claim 1, is characterized in that, the external diameter of described dimmer is less than the external diameter of described annular light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320793513.3U CN203616259U (en) | 2013-12-04 | 2013-12-04 | Detection device with dimmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320793513.3U CN203616259U (en) | 2013-12-04 | 2013-12-04 | Detection device with dimmer |
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| Publication Number | Publication Date |
|---|---|
| CN203616259U true CN203616259U (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320793513.3U Expired - Fee Related CN203616259U (en) | 2013-12-04 | 2013-12-04 | Detection device with dimmer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110779920A (en) * | 2019-10-30 | 2020-02-11 | 中国计量大学 | Pearl detection device |
| CN113218945A (en) * | 2021-04-30 | 2021-08-06 | 博众精工科技股份有限公司 | Chip surface detection device |
| CN114850072A (en) * | 2022-05-10 | 2022-08-05 | 苏州天准科技股份有限公司 | Electrode outer ring detection device, detection method and electrode comprehensive detection equipment |
-
2013
- 2013-12-04 CN CN201320793513.3U patent/CN203616259U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110779920A (en) * | 2019-10-30 | 2020-02-11 | 中国计量大学 | Pearl detection device |
| CN113218945A (en) * | 2021-04-30 | 2021-08-06 | 博众精工科技股份有限公司 | Chip surface detection device |
| CN114850072A (en) * | 2022-05-10 | 2022-08-05 | 苏州天准科技股份有限公司 | Electrode outer ring detection device, detection method and electrode comprehensive detection equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20201204 |