CN112906421A - Product two-dimensional code identification method - Google Patents
Product two-dimensional code identification method Download PDFInfo
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- CN112906421A CN112906421A CN202110378249.6A CN202110378249A CN112906421A CN 112906421 A CN112906421 A CN 112906421A CN 202110378249 A CN202110378249 A CN 202110378249A CN 112906421 A CN112906421 A CN 112906421A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 54
- 238000012360 testing method Methods 0.000 claims abstract description 52
- 238000011027 product recovery Methods 0.000 claims description 7
- 230000011218 segmentation Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 abstract description 7
- 230000000007 visual effect Effects 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 2
- 238000003491 array Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1408—Methods for optical code recognition the method being specifically adapted for the type of code
- G06K7/1417—2D bar codes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
- G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
- G06K17/0025—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement consisting of a wireless interrogation device in combination with a device for optically marking the record carrier
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/14—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using light without selection of wavelength, e.g. sensing reflected white light
- G06K7/1404—Methods for optical code recognition
- G06K7/1439—Methods for optical code recognition including a method step for retrieval of the optical code
- G06K7/1443—Methods for optical code recognition including a method step for retrieval of the optical code locating of the code in an image
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Abstract
The invention provides a method for identifying a product two-dimensional code, which comprises the following steps: s10: obtaining a product array picture; s20: identifying the product array picture to acquire two-dimensional code information and initial position information of the product; s30: when a product is transferred to a test station, receiving test station information corresponding to the product, and corresponding the test station information to initial position information of the product; s40: and binding the test station information and the two-dimension code information of the product. In the invention, products with two-dimension codes are arrayed and then are shot by a camera to be identified and acquired in a centralized way, so that the information acquisition speed is high and the cost is low; meanwhile, the two-dimensional code information and the initial position information are obtained by matching with a visual algorithm before material taking, and the test station information is obtained during material loading, so that the safety and the stability of the process are improved; and the test station information and the two-dimension code information are bound, and finally, corresponding test is executed, so that the logic is simpler to realize and the control is easier.
Description
Technical Field
The invention relates to the field of two-dimension code information reading, in particular to a product two-dimension code identification method.
Background
Generally, in multi-station two-dimensional code information reading, information burning and testing, two-dimensional code information of a product is generally obtained by additionally arranging a scanning gun on each product station. In addition, the information obtained by scanning the two-dimensional code generally includes a product name, a brand, a model, a production date, a serial number and the like, and in the prior art, a scanning gun is adopted to scan the two-dimensional code arrays arranged one by one according to a specified sequence.
In the whole process of obtaining two-dimensional code information through scanning gun scanning in proper order, the scanning required time is longer, is N times of single two-dimensional code scanning time, and N is the quantity of two-dimensional code. Thus, as the number of two-dimensional codes increases, the time required for scanning also increases. Moreover, the scanning gun can only recognize the content of the two-dimensional code, but cannot judge whether a product exists on a station or not, whether the product has the two-dimensional code, and the like, and usually an auxiliary sensor is required to be added for the judgment. Therefore, the scheme in the prior art adopts more devices, is complex to realize, is not convenient to control logically, and has higher cost.
Therefore, a method for identifying a product two-dimensional code, which is convenient to control and uses fewer devices, must be designed.
Disclosure of Invention
In order to solve one of the above problems, the present invention provides a method for identifying a product two-dimensional code, which is characterized in that the method includes:
s10: obtaining a product array picture;
s20: identifying the product array picture to acquire two-dimensional code information and initial position information of the product;
s30: when a product is transferred to a test station, receiving test station information corresponding to the product, and corresponding the test station information to initial position information of the product;
s40: and binding the test station information and the two-dimension code information of the product.
As a further improvement of the present invention, in the step S10, a plurality of the products are sequentially arranged in an array on the tray.
As a further improvement of the present invention, the step S20 includes:
s21: dividing the product array picture into M divided pictures;
s22: starting M threads to scan the M divided pictures simultaneously;
s23: identifying and recording two-dimensional code information and initial position information in the segmented picture;
wherein M is more than or equal to 2.
As a further improvement of the present invention, the step S21 includes:
and dividing the product array picture into M divided pictures along the horizontal direction or the vertical direction, wherein M is the number of rows or columns of the two-dimensional code array picture.
As a further improvement of the present invention, in step S22: before starting M threads to scan M segmentation pictures simultaneously, an interested area of each two-dimensional code in each segmentation picture is identified.
As a further improvement of the present invention, step S23 includes:
identifying a two-dimensional code in a segmented picture, and confirming initial position information of a product corresponding to the two-dimensional code;
and storing and identifying the two-dimension code information, and corresponding the two-dimension code information with the initial position information of the product.
As a further improvement of the present invention, step S20 further includes:
judging the placement condition of the products on the tray while identifying the product array picture;
the product placement condition comprises: successfully identifying the two-dimension code information and unsuccessfully identifying the two-dimension code information;
if the product is not placed at the corresponding position on the material tray or the product on the material tray is placed wrongly, outputting the two-dimensional code information which is not successfully identified; and if the product is correctly placed at the corresponding position on the material tray, outputting the information of the successfully identified two-dimensional code.
As a further improvement of the present invention, step S30 includes:
s31: selecting and adjusting products according to the placement condition of the products, and transferring the products to a testing station;
s32: test station information corresponding to the product is acquired,
s33: and corresponding the test station information with the initial position information of the product.
As a further improvement of the present invention, the step S31 of "selecting and adjusting a product" includes:
if the two-dimension code information is not successfully identified, skipping the corresponding position on the material tray, and giving up to select the corresponding product; or throwing the corresponding product to a product recovery tray;
and if the two-dimension code information is successfully identified, selecting and adjusting the product according to the two-dimension code information.
As a further improvement of the invention, if the two-dimension code information is successfully acquired, selecting the product on the tray and judging the polarity of the product according to the two-dimension code information;
the product with reversed polarity is rotated horizontally by 180 ° during the movement.
Compared with the prior art, the method has the advantages that products with the two-dimension codes are arrayed, and then the two-dimension code information is acquired through camera shooting and centralized identification, so that the information acquisition speed is high, and the cost is low; meanwhile, the two-dimensional code information and the initial position information are obtained by matching with a visual algorithm before material taking, and the test station information is obtained during material loading, so that the safety and the stability of the process are improved; and binding the test station information and the two-dimension code information, and finally executing corresponding test, so that the information of the product on the test station can be directly determined during the test, the logic is simpler to realize, and the control is easier.
Drawings
Fig. 1 is a flowchart of a method for identifying a two-dimensional code of a product according to the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention relates to a method for identifying a product two-dimensional code, and the identification method is specifically described below.
First, in step S10, a product array picture is obtained.
The products are arranged on the tray in an array, and the products arranged in the array are scanned by controlling a camera or other shooting modes to obtain a product array picture. The material tray is provided with N material tray stations arranged according to the matrix array, and the products are placed corresponding to the material tray stations in sequence. It should be noted that the tray stations may be clearly displayed and clearly distinguishable from each other, or may be stations with a blurred boundary and not directly distinguishable.
In step S20, the product array picture is recognized to acquire two-dimensional code information and initial position information of the product.
In step S20, the two-dimensional code information of the product and the initial position information of the product can be acquired by scanning and recognizing the product array picture. The product and the corresponding two-dimensional code must exist in the product array picture. And the control mechanism PLC controls the image recognition system to recognize the two-dimensional code in the product array picture. Moreover, as mentioned above, the products are all placed on the tray in sequence, so that the image recognition system can also know the specific positions of all the products in the recognition process and record the specific positions as initial position information. Of course, the initial position information may be recorded in a coordinate manner.
Therefore, in the invention, the two-dimensional codes of all products on the material tray can be obtained at one time by matching the shooting device such as a camera and the like with the visual algorithm, and a scanning gun is not separately adopted for sequential scanning, so that the utilization rate of devices is effectively reduced, and the time is saved. Of course, it is within the scope of the present invention to obtain the product array picture by other means than shooting with a shooting device.
Specifically, step S20 includes:
s21: dividing the product array picture into M divided pictures;
s22: starting M threads to scan the M divided pictures simultaneously;
s23: identifying and recording two-dimensional code information and initial position information in the segmented picture;
wherein M is more than or equal to 2.
In the invention, M threads simultaneously execute the scanning of M divided pictures, thereby greatly shortening the code scanning time. As described above, after the camera shoots the product and obtains the product array picture, the two-dimensional code is identified by matching with the visual algorithm, and the two-dimensional code is also arranged along the matrix, so that the two-dimensional code is conveniently scanned and identified.
Further, the step S21 includes:
and dividing the product array picture into M divided pictures along the horizontal direction or the vertical direction, wherein M is the number of rows or columns of the two-dimensional code array picture.
Therefore, the divided pictures respectively comprise only one row or one column of two-dimensional codes which are sequentially arranged, and when each divided picture is scanned in each thread, the divided pictures are sequentially scanned backwards from the first two-dimensional code in each row or column.
Further, in step S22: before starting M threads to scan M segmentation pictures simultaneously, an interested area of each two-dimensional code in each segmentation picture is identified.
Specifically, in this embodiment, the coordinate is used to identify the region of interest of the two-dimensional code. Therefore, when the two-dimensional code is scanned, only the region of interest of the two-dimensional code needs to be scanned, error scanning or multi-scanning is prevented, and code scanning time is saved. Of course, the step of "identifying the region of interest of each two-dimensional code in each divided picture" may be performed before the step S21, i.e., the region of interest of the two-dimensional code is identified after the product array picture is acquired, or may be performed between the steps S21 and S22, i.e., the region of interest of the two-dimensional code in the divided picture is identified after the divided picture is acquired.
Step S23 includes identifying the two-dimension code in the divided picture and confirming the initial position information of the product corresponding to the two-dimension code;
and storing and identifying the two-dimension code information, and corresponding the two-dimension code information with the initial position information of the product.
The scanning mechanism identifies the two-dimensional codes in the divided pictures, can correspondingly identify the positions of the corresponding products or the corresponding material tray stations and records the positions as initial position information.
Further, step S20 includes:
judging the placement condition of the products on the tray while identifying the product array picture;
the product placement condition comprises: successfully identifying the two-dimension code information and unsuccessfully identifying the two-dimension code information;
if the product is not placed at the corresponding position on the material tray or the product on the material tray is placed wrongly, outputting the two-dimensional code information which is not successfully identified; and if the product is correctly placed at the corresponding position on the material tray, outputting the information of the successfully identified two-dimensional code.
In the invention, the placement condition of the product on the tray can be judged through a visual algorithm, and the successfully recognized two-dimensional code information and the unsuccessfully recognized two-dimensional code information are output. When a product is not placed on a certain material tray station on the material tray, the system can identify that the two-dimensional code is not on the material tray station, and output the information of the two-dimensional code which is not successfully identified; when a product is placed on a certain material tray station on the material tray, but the complete two-dimensional code cannot be obtained visually after the picture is taken, the information of the two-dimensional code which is not successfully identified is also output. Only when a product is placed on a certain material tray station of the material tray and the product is placed correctly, the shooting can obtain a complete two-dimensional code, and the two-dimensional code information can be successfully identified through output.
Of course, in step S20, the product placement may be obtained by directly scanning the product array picture, or may be obtained by identifying the divided picture after dividing the product array picture.
In step S30, when the product is transferred to the test station, the test station information corresponding to the product is received and the test station information is associated with the initial position information of the product.
Further, step S30 includes:
s31: selecting and adjusting products according to the placement condition of the products, and transferring the products to a testing station;
s32: test station information corresponding to the product is acquired,
s33: and corresponding the test station information with the initial position information of the product.
After the information of the product placement condition is obtained, the product placement condition can be specifically analyzed, the product is selected and adjusted, and the proper product is moved to the testing station. And the test station information can be corresponding to the initial position information of the product, so that the test station information can be bound with the two-dimensional code information of the product, the two-dimensional code information of each product and the corresponding test station information can be determined, and the subsequent test is facilitated.
Wherein, the step S31 of "selecting and adjusting products" includes:
if the two-dimension code information is not successfully identified, skipping the corresponding position on the material tray, and giving up to select the corresponding product; or throwing the corresponding product to a product recovery tray;
and if the two-dimension code information is successfully identified, selecting and adjusting the product according to the two-dimension code information.
If the two-dimension code information is not successfully identified, the situation that products do not exist on the material tray station is indicated, or the products are placed wrongly to cause that the two-dimension codes cannot be identified, so that the material taking module is controlled to skip the material tray station, and products on the next material tray station which can successfully identify the two-dimension code information are selected and moved. Alternatively, the product may be thrown against a product recovery tray.
Specifically, in the process of sequentially taking materials, if the two-dimensional code is not successfully identified on the material tray station and a product exists on the material tray station, the corresponding product can be thrown to a product recovery tray; of course, if no product exists on the material tray station, the corresponding position on the material tray can be directly skipped. Or after the material taking is finished, throwing the product which does not successfully identify the two-dimensional code to the product recovery disc.
If the two-dimension code information is successfully identified, the product on the material tray station is correctly placed, so that the two-dimension code can be identified, and the product on the material tray station can be selected and moved.
Specifically, if the two-dimension code information is successfully acquired, selecting a product on the tray and judging the polarity of the product according to the two-dimension code information; the product with reversed polarity is rotated horizontally by 180 ° during the movement.
Namely, when the product array picture is identified to obtain the two-dimension code information and the initial position information, the polarity of the product can be judged according to the obtained two-dimension code information, and whether the polarity of the product is reversed or not is judged. The polarity of product is including anodal and negative pole, if the product is put in reverse, then gets the material module and takes away this product and place back on the test station, probably leads to the test inaccurate. Thus, if the polarity of a product is reversed, the product needs to be rotated 180 ° before the material taking module places the product in the testing station, so that the polarity of the product is the same as that of other products. And the step is carried out in the process of moving the product after the material taking module selects the product, so that the product with the correct polarity is placed on the testing station.
Thus, in order to facilitate the rotation of the product during the movement of the product, the "selecting and adjusting the product" in the step S31 includes:
and controlling the material taking module to select products on the material tray at intervals of one material tray station.
For example, when material is taken, products on odd tray stations such as 1, 3, 5, 7 and 9 are taken first, and products on even tray stations such as 2, 4, 6, 8 and 10 are taken again. As described above, after the product is taken out, the control unit PLC receives the two-dimensional code information and the initial position information of the product. And, in practical application, the material taking module generally grabs 8 products at one time.
Finally, in step S40, the test station information and the two-dimensional code information of the product are bound.
After the material taking module places the product on the corresponding test station, the control mechanism PLC receives the test station information of the product, binds the test station information and the two-dimensional code information and transmits the information to the upper computer, so that the product and the corresponding two-dimensional code can be determined, and the upper computer can conveniently perform further test operation.
In summary, in the invention, products with two-dimension codes are arrayed and then are shot by a camera to be identified and acquired in a centralized manner, so that the information acquisition speed is high and the cost is low; meanwhile, the two-dimensional code information and the initial position information are obtained by matching with a visual algorithm before material taking, and the test station information is obtained during material loading, so that the safety and the stability of the process are improved; and binding the test station information and the two-dimension code information, and finally executing corresponding test, so that the information of the product on the test station can be directly determined during the test, the logic is simpler to realize, and the control is easier. In addition, the scanning acquisition of the two-dimensional code information is realized by simultaneously scanning through M threads, so that the efficiency is higher. In addition, the initial position information of each product can be obtained, so that other operations can be carried out when the material taking module is controlled to take materials, for example, a material tray station which does not successfully identify the two-dimensional code information is skipped, and the products can be placed on a product recovery tray, so that the products can be further subdivided by workers.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention and is not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. A method for identifying a product two-dimensional code is characterized by comprising the following steps:
s10: obtaining a product array picture;
s20: identifying the product array picture to acquire two-dimensional code information and initial position information of the product;
s30: when a product is transferred to a test station, receiving test station information corresponding to the product, and corresponding the test station information to initial position information of the product;
s40: and binding the test station information and the two-dimension code information of the product.
2. The method for identifying two-dimensional codes of products according to claim 1, wherein in step S10, the products are sequentially arranged in an array on a tray.
3. The method for identifying the product two-dimensional code according to claim 1, wherein the step S20 includes:
s21: dividing the product array picture into M divided pictures;
s22: starting M threads to scan the M divided pictures simultaneously;
s23: identifying and recording two-dimensional code information and initial position information in the segmented picture;
wherein M is more than or equal to 2.
4. The method for identifying the product two-dimensional code according to claim 3, wherein the step S21 includes:
and dividing the product array picture into M divided pictures along the horizontal direction or the vertical direction, wherein M is the number of rows or columns of the two-dimensional code array picture.
5. The method for identifying the product two-dimensional code according to claim 3, wherein in the step S22: before starting M threads to scan M segmentation pictures simultaneously, an interested area of each two-dimensional code in each segmentation picture is identified.
6. The method for identifying the product two-dimensional code according to claim 3, wherein the step S23 includes:
identifying a two-dimensional code in a segmented picture, and confirming initial position information of a product corresponding to the two-dimensional code;
and storing and identifying the two-dimension code information, and corresponding the two-dimension code information with the initial position information of the product.
7. The method for identifying the product two-dimensional code according to claim 1 or 3, wherein the step S20 further comprises:
judging the placement condition of the products on the tray while identifying the product array picture;
the product placement condition comprises: successfully identifying the two-dimension code information and unsuccessfully identifying the two-dimension code information;
if the product is not placed at the corresponding position on the material tray or the product on the material tray is placed wrongly, outputting the two-dimensional code information which is not successfully identified; and if the product is correctly placed at the corresponding position on the material tray, outputting the information of the successfully identified two-dimensional code.
8. The method for identifying the product two-dimensional code according to claim 7, wherein the step S30 includes:
s31: selecting and adjusting products according to the placement condition of the products, and transferring the products to a testing station;
s32: test station information corresponding to the product is acquired,
s33: and corresponding the test station information with the initial position information of the product.
9. The method for identifying the product two-dimensional code according to claim 8, wherein the step S31 of "selecting and adjusting the product" includes:
if the two-dimension code information is not successfully identified, skipping the corresponding position on the material tray, and giving up to select the corresponding product; or throwing the corresponding product to a product recovery tray;
and if the two-dimension code information is successfully identified, selecting and adjusting the product according to the two-dimension code information.
10. The product two-dimensional code recognition method according to claim 9, wherein if the two-dimensional code information is successfully acquired, selecting the product on the tray and judging the polarity of the product according to the two-dimensional code information;
the product with reversed polarity is rotated horizontally by 180 ° during the movement.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114358221A (en) * | 2021-12-08 | 2022-04-15 | 深圳市天视通技术有限公司 | Module placing method, product testing device, system and storage medium |
| CN114913318A (en) * | 2022-05-24 | 2022-08-16 | 江苏应时达电气科技有限公司 | Visual graphic code identification method, identification system and warehousing management method |
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