CN103364413A - Identifier detection and product grading control system and method - Google Patents
Identifier detection and product grading control system and method Download PDFInfo
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- CN103364413A CN103364413A CN2012101040685A CN201210104068A CN103364413A CN 103364413 A CN103364413 A CN 103364413A CN 2012101040685 A CN2012101040685 A CN 2012101040685A CN 201210104068 A CN201210104068 A CN 201210104068A CN 103364413 A CN103364413 A CN 103364413A
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- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 230000002950 deficient Effects 0.000 claims description 8
- 239000000047 product Substances 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Abstract
The invention discloses an identifier detection and product grading control system and method, which relate to the technical field of machine vision detection. The system comprises a conveyor belt, an image acquisition unit, a processing unit, two trigger units, and a grading execution unit for product grading, wherein a first trigger unit, the image acquisition unit and a second trigger unit are sequentially arranged along the conveying direction of the conveyor belt, and the image acquisition unit is opposite to the lower surface of the conveyor belt; the first trigger unit, the image acquisition unit, the processing unit and the second trigger unit are sequentially connected with one another; the grading execution unit is connected with the processing unit. According to the invention, images of products are acquired and analyzed, and the products are graded according to the analysis results, so that the product grading is not influenced by external environments such as lighting, the detection precision of product grading is improved, and the system has the advantages of low false detection and detection omission probability, high compatibility and simple structure.
Description
Technical field
The present invention relates to the mechanical vision inspection technology field, particularly a kind of label detection and grading control system and method.
Background technology
Development along with the machine vision industry, the scale of on-line detecting system in the industry is detected in continuous expansion in the surface, technology is also more and more ripe, at present, in the on-line detecting system of prior art, the grading method that everybody generally adopts is: after the front-end detection system detects product defects, determine defective locations, then the labeling device such as price labeling identifies this defective locations with color label; Rear end recycling color mark sensor is identified this label, triggers grading equipment, thereby realizes grading.Adopt this grading method of prior art affected by the external environment such as light, cause false drop rate very high, often false retrieval, undetected situation appear, have a strong impact on the production efficient of producer, also affected the automatization level of whole production line simultaneously.
Summary of the invention
The technical matters that (one) will solve
The technical problem to be solved in the present invention is: how to make grading not be subjected to the impact of the external environments such as light, to improve the accuracy of detection of grading.
(2) technical scheme
For solving the problems of the technologies described above, the invention provides a kind of label detection and grading control system, described system comprises: travelling belt, image acquisition units, processing unit, two trigger elements, and the classification performance element that is used for carrying out grading, the first trigger element, image acquisition units, and second trigger element set gradually along the direction of transfer of described travelling belt, and described image acquisition units is relative with the lower surface of described travelling belt, described the first trigger element, image acquisition units, processing unit, and second trigger element connect successively, described classification performance element is connected with described processing unit.
Preferably, described system also comprises: light source, described light source is relative with the lower surface of described travelling belt.
Preferably, described light source is area array light source or strip source.
Preferably, described system also comprises: display unit, described display unit is connected with described processing unit.
Preferably, described the first trigger element and the second trigger element are photoelectric sensor.
Preferably, described image acquisition units is area array cameras.
The invention also discloses a kind of stage division based on described label detection and grading control system, said method comprising the steps of:
S1: when the product on the travelling belt during through the first trigger element, described the first trigger element sends trigger pip to image acquisition units;
S2: after described image acquisition units receives trigger pip, this product is carried out image acquisition, and the image that collects is sent to described processing unit;
S3: described processing unit is analyzed described image, judges whether to have the defective sign, if having, then records the sequence number of this product;
S4: when this product during through the second trigger element, described the second trigger element sends trigger pip to processing unit, and processing unit sends a control signal to the classification performance element, to realize the classification to product.
Preferably, among the step S3, described processing unit also shows analysis result by display unit.
(3) beneficial effect
The present invention is by gathering the image of product, and image analyzed, carry out grading according to analysis result, make grading not be subjected to the impact of the external environments such as light, improve the accuracy of detection of grading, and had flase drop and false dismissal probability is low, compatible advantage strong, simple in structure.
Description of drawings
Fig. 1 is the structural representation according to the label detection of one embodiment of the present invention and grading control system.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
Fig. 1 is the structural representation according to the label detection of one embodiment of the present invention and grading control system; With reference to Fig. 1, the system of present embodiment comprises: travelling belt 1, image acquisition units 2, processing unit 5, two trigger elements, and the classification performance element (not shown) that is used for carrying out grading, the first trigger element 3, image acquisition units 2, and second trigger element 4 set gradually along the direction of transfer of described travelling belt 1, and described image acquisition units 2 is relative with the lower surface of described travelling belt 1, described the first trigger element 3, image acquisition units 2, processing unit 5, and second trigger element 4 connect successively, described classification performance element is connected with described processing unit 5.
By improve described image acquisition units 2 brightness, sharpness and the homogeneity of collection image, preferably, described system also comprises: light source 6, described light source 6 is relative with the lower surface of described travelling belt 1.By further improve described image acquisition units 2 brightness, sharpness and the homogeneity of collection image, preferably, described light source 6 is area array light source or strip source, in the present embodiment, described light source 6 adopts the high frequency incandescent lamp as area array light source, selects relatively described image acquisition units 2 frontlighting modes to provide uniform illuminating ray for described image acquisition units 2.
Preferably, described system also comprises: the display unit (not shown), described display unit is connected with described processing unit 5.
For improving the response speed of described the first trigger element 3 and the second trigger element 4, preferably, described the first trigger element 3 and the second trigger element 4 are photoelectric sensor.
In the present embodiment, preferably, described image acquisition units 2 is area array cameras.
Label detection of the present invention and grading control system with respect to prior art, also have the following advantages and beneficial effect except the accuracy of detection that improves grading:
1, have an independently system, compatible with the on-line detecting system of most;
2, simple in structure, easy for installation, need not to change existing equipment, get final product seamless connection;
3, loss, false drop rate are low, and production efficiency and mechanical automation level are provided greatly;
The invention also discloses a kind of stage division based on described label detection and grading control system, said method comprising the steps of:
S1: when the product on the travelling belt 1 during through the first trigger element 3, described the first trigger element 3 sends trigger pips to image acquisition units 2;
S2: after described image acquisition units 2 receives trigger pip, this product is carried out image acquisition, and the image that collects is sent to described processing unit 5;
S3: 5 pairs of described images of described processing unit are analyzed (in the present embodiment, image denoising, binaryzation, morphology are adopted in described analysis, profile is searched and area calculating scheduling algorithm carries out, can analyze the parameters such as the number that whether has defective sign and defective sign in the described image, zone), the result of output defective sign 7, judge whether to have the defective sign, if have, then record the sequence number of this product;
S4: when this product during through the second trigger element 4, described the second trigger element 4 sends trigger pips to processing unit 5, and processing unit 5 sends control commands to the classification performance element, to realize the classification to product.
Understand in real time the product situation for ease of operator, preferably, among the step S3, described processing unit 5 also shows analysis result by display unit.
Above embodiment only is used for explanation the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; in the situation that does not break away from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (8)
1. a label detection and grading control system, it is characterized in that, described system comprises: travelling belt, image acquisition units, processing unit, two trigger elements, and the classification performance element that is used for carrying out grading, the first trigger element, image acquisition units, and second trigger element set gradually along the direction of transfer of described travelling belt, and described image acquisition units is relative with the lower surface of described travelling belt, described the first trigger element, image acquisition units, processing unit, and second trigger element connect successively, described classification performance element is connected with described processing unit.
2. the system as claimed in claim 1 is characterized in that, described system also comprises: light source, described light source is relative with the lower surface of described travelling belt.
3. system as claimed in claim 2 is characterized in that, described light source is area array light source or strip source.
4. the system as claimed in claim 1 is characterized in that, described system also comprises: display unit, described display unit is connected with described processing unit.
5. the system as claimed in claim 1 is characterized in that, described the first trigger element and the second trigger element are photoelectric sensor.
6. such as each described system in the claim 1～5, it is characterized in that described image acquisition units is area array cameras.
7. the stage division based on each described label detection and grading control system in the claim 1～6 is characterized in that, said method comprising the steps of:
S1: when the product on the travelling belt during through the first trigger element, described the first trigger element sends trigger pip to image acquisition units;
S2: after described image acquisition units receives trigger pip, this product is carried out image acquisition, and the image that collects is sent to described processing unit;
S3: described processing unit is analyzed described image, judges whether to have the defective sign, if having, then records the sequence number of this product;
S4: when this product during through the second trigger element, described the second trigger element sends trigger pip to processing unit, and processing unit sends a control signal to the classification performance element, to realize the classification to product.
8. method as claimed in claim 7 is characterized in that, among the step S3, described processing unit also shows analysis result by display unit.
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| CN2012101040685A CN103364413A (en) | 2012-04-10 | 2012-04-10 | Identifier detection and product grading control system and method |
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| CN2012101040685A CN103364413A (en) | 2012-04-10 | 2012-04-10 | Identifier detection and product grading control system and method |
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Cited By (6)
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| CN105372247A (en) * | 2015-10-28 | 2016-03-02 | 重庆远创光电科技有限公司 | Frame for automatic chip detection |
| CN105388159A (en) * | 2015-12-14 | 2016-03-09 | 重庆远创光电科技有限公司 | Chip image acquisition apparatus |
| CN105445273A (en) * | 2015-12-14 | 2016-03-30 | 重庆远创光电科技有限公司 | Rapid acquisition apparatus for chip image |
| CN105572135A (en) * | 2015-12-14 | 2016-05-11 | 重庆远创光电科技有限公司 | System for performing qualification detection on eutectic soldering on air-conditioner chips |
| CN105572142A (en) * | 2015-12-14 | 2016-05-11 | 重庆远创光电科技有限公司 | Dual-camera chip detection system |
| CN105572140A (en) * | 2015-12-14 | 2016-05-11 | 重庆远创光电科技有限公司 | Chip image detection system |
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