CN112507747B - Device and method for scanning traceability codes - Google Patents
Device and method for scanning traceability codes Download PDFInfo
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- CN112507747B CN112507747B CN202011456785.5A CN202011456785A CN112507747B CN 112507747 B CN112507747 B CN 112507747B CN 202011456785 A CN202011456785 A CN 202011456785A CN 112507747 B CN112507747 B CN 112507747B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000000007 visual effect Effects 0.000 claims abstract description 14
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000013365 dairy product Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Classifications
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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
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10831—Arrangement of optical elements, e.g. lenses, mirrors, prisms
-
- 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
Abstract
The invention provides a device and a method for scanning a traceable code, which are used for solving the problems of low decoding efficiency, low reading rate and insufficient accuracy in the prior art. The device comprises: the visual camera is connected with the industrial control equipment, and the industrial control equipment is also connected with the picture decoding server. The method comprises the following steps: s1, when an electric eye detects that an article passes through, respectively sending trigger signals to a vision camera and industrial control equipment; s2, continuously photographing after the vision camera receives a trigger signal sent by the electric eye, and sending a picture to industrial control equipment; s3, after the industrial control equipment receives a trigger signal sent by the electric eye, receiving a picture sent by the visual camera, and forwarding the received picture to a picture decoding server; s4, the picture decoding server receives the picture sent by the industrial control equipment, decodes the picture and returns a decoding result to the industrial control equipment.
Description
[ Field of technology ]
The invention relates to the field of coding technology and automatic equipment control, in particular to a device and a method for scanning a traceable code.
[ Background Art ]
The traditional one-dimensional code/two-dimensional code reading method has the defects of low decoding efficiency, low reading rate, insufficient accuracy and the like by triggering the visual code reader by an electric eye which is the visual code reader and decoding by using a built-in device or chip. The electric eye described above: i.e. a photosensor, a device that can convert optical signals into electrical signals. The visual code reader comprises: the one-dimensional code/two-dimensional code is arranged according to a certain coding rule and is used for expressing a graphic identifier of a group of information. The method is mainly used for tracking and tracing products, controlling production and automatically identifying, and particularly forms one of hardware systems of the Internet of things together with the currently emerging RFID technology.
[ Invention ]
The invention provides a device and a method for scanning a traceable code, which are used for solving the problems of low decoding efficiency, low reading rate and insufficient accuracy in the prior art.
The invention relates to a device for scanning a traceability code, which comprises: the visual camera is connected with the industrial control equipment, and the industrial control equipment is also connected with the picture decoding server; the electric eye is used for detecting the passing of the articles and respectively sending trigger signals to the vision camera and the industrial control equipment; the visual camera is used for continuously photographing after receiving the trigger signal sent by the electric eye and sending a picture to the industrial control equipment; the industrial control equipment is used for receiving the picture sent by the visual camera after receiving the trigger signal sent by the electric eye and forwarding the received picture to the picture decoding server; the picture decoding server is used for receiving the picture sent by the industrial control equipment, decoding the picture and returning the decoding result to the industrial control equipment.
Wherein the industrial control device comprises: the serial number generation unit is used for generating a unique serial number when receiving the trigger signal sent by the electric eye; the marking unit is used for marking the pictures received from the vision camera at the same time as the unique serial number; and the memory unit is used for storing the pictures marked as the unique serial numbers.
Further, the industrial control device forwards the picture marked as the unique serial number to the picture decoding server.
Further, the picture decoding server includes: the decoding unit is used for decoding all code information in the picture and forming a bar code data queue; and the decoding result generating unit is used for marking the unique serial numbers for the bar code data queue and generating the decoding result.
Further, the industrial control device further includes: the identification unit is used for identifying the corresponding relation between the decoding result and the picture according to the comparison between the unique serial number marked in the decoding result and the unique serial number marked by the picture stored in the memory unit; and the data replacing unit is used for taking the non-repeated bar code data in the bar code data queue and replacing the picture with the non-repeated bar code data.
The invention relates to a method for scanning a traceability code, which comprises the following steps: s1, when an electric eye detects that an article passes through, respectively sending trigger signals to a vision camera and industrial control equipment; s2, continuously photographing after the vision camera receives the trigger signal sent by the electric eye, and sending a picture to the industrial control equipment; s3, after receiving the trigger signal sent by the electric eye, the industrial control equipment receives the picture sent by the visual camera and forwards the received picture to a picture decoding server; s4, the picture decoding server receives the picture sent by the industrial control equipment, decodes the picture and returns a decoding result to the industrial control equipment.
Wherein, step S3 further includes: when the industrial control equipment receives the trigger signal sent by the electric eye, a unique serial number is generated; marking pictures received simultaneously from the vision camera as the unique serial number; the picture marked as the unique serial number is saved.
Further, in step S3, the industrial control device forwards the picture marked as the unique serial number to the picture decoding server.
Further, step S4 further includes: the picture decoding server decodes all code information in the picture and forms a bar code data queue; and marking the unique serial numbers for the bar code data queue, and generating the decoding result.
Further, the method further comprises the steps of: s5, the industrial control equipment identifies the corresponding relation between the decoding result and the picture according to the comparison between the unique serial number marked in the decoding result and the unique serial number marked in the stored picture; s6, taking non-repeated bar code data in the bar code data queue, and replacing the picture with the non-repeated bar code data.
The device and the method for scanning the traceability code are integrated solutions based on the Internet of things, the Internet and the image reading field, have high reliability, high expansibility and high availability, can rapidly improve and adjust the reading rate of the one-dimensional code/two-dimensional code, and are effectively applied to production and collection environments with high requirements in the industries of medicines, quick-acting products and dairy products. The device and the method can improve the traditional acquisition rate by more than 10 percent.
[ Description of the drawings ]
Fig. 1 is a schematic diagram of an apparatus for scanning a traceback code according to embodiment 1 of the present invention;
fig. 2 is a flowchart of a method for scanning a traceback code in embodiment 2 of the present invention.
[ Detailed description ] of the invention
The apparatus for scanning a traceback code in embodiment 1 and this embodiment, as shown in fig. 1, includes: an electric eye 11, a vision camera 12 and an industrial control device 13 respectively connected to the electric eye 11, the vision camera 12 being connected to the industrial control device 13, and the industrial control device 13 being further connected to a picture decoding server 14. More specifically, the industrial control device 13 includes: a serial number generation unit 131, a marking unit 132, a memory unit 133, an identification unit 134, and a data replacement unit 135; included within the picture decoding server 14 are: the decoding unit 141 and the decoding result generating unit 142.
The electric eye 11 is used for detecting the passing of the articles, and when the articles pass, trigger signals are respectively sent to the vision camera 12 and the industrial control equipment 13. The vision camera 12 receives the trigger signal from the electric eye 11 and continuously shoots, so that more samples can be collected to ensure the reading rate of the subsequent bar codes and send the pictures to the industrial control equipment 13. After the industrial control device 13 receives the trigger signal sent from the electric eye 11, the serial number generating unit 131 generates a unique serial number, for example: the 0D3a53E0-5691-4F46-8E6D-63DC11D4687F, the industrial control device 13 receives pictures, in this embodiment, a plurality of pictures (the vision camera 12 continues to take pictures) from the vision camera 12 at the same time, the marking unit 132 marks the received pictures as unique serial numbers 0D3a53E0-5691-4F46-8E6D-63DC11D4687F generated by the serial number generating unit 131, and the memory unit 133 holds pictures marked as unique serial numbers 0D3a53E0-5691-4F46-8E6D-63DC11D 4687F. The industrial control device 13 then forwards the picture marked as unique serial number 0D3a53E0-5691-4F46-8E6D-63DC11D4687F to the picture decoding server 14. The picture decoding server 14 receives the pictures sent from the industrial control device 13, and the decoding unit 141 decodes all code information in all the pictures, which may be a bar code such as a one-dimensional code/two-dimensional code or a variable code, and forms a bar code data queue. The decoding result generating unit 142 marks the unique serial number 0D3a53E0-5691-4F46-8E6D-63DC11D4687F for the barcode data queue, and generates decoding results, such as: 0D3A53E0-5691-4F46-8E6D-63DC11D4687F: the method comprises the steps of 1, 2, 3 and 4 …. The decoding result is then returned to the industrial control device 13. After the industrial control device 13 receives the decoding result, the identification unit 134 identifies the corresponding relationship between the decoding result and the picture according to the comparison between the unique serial number 0D3a53E0-5691-4F46-8E6D-63DC11D4687F marked in the decoding result and the unique serial number 0D3a53E0-5691-4F46-8E6D-63DC11D4687F marked in the picture stored in the memory unit 133. Since the vision camera 12 continuously photographs, the code information in the plurality of pictures received and forwarded by the industrial control device 13 is partially duplicated, but the reading rate is guaranteed, and finally, the data replacing unit 135 takes the barcode data which is not duplicated in the barcode data queue, for example: the barcode1, 2, 3 and 4 are non-repeated bar code data, and the non-repeated bar code data is replaced with a picture marked as 0D3A53E0-5691-4F46-8E6D-63DC11D 4687F. Thus, the data of the bar codes or the variable codes such as the whole one-dimensional code/two-dimensional code are read, and the read data are namely the bar codes 1, 2, 3 and 4.
In conclusion, the device for scanning the traceable code has high reliability, high expansibility and high availability, and can rapidly improve and adjust the reading rate of the one-dimensional code/two-dimensional code.
The method for scanning the traceback code in embodiment 2 and this embodiment, as shown in fig. 2, includes the following steps:
S21, when the electric eye detects that an article passes through, triggering signals are sent to the vision camera and the industrial control equipment respectively.
S22, the vision camera continuously shoots after receiving the trigger signal sent by the electric eye, so that more samples can be acquired to ensure the reading rate of the subsequent bar codes, and the pictures are sent to industrial control equipment.
S23, after receiving the trigger signal sent by the electric eye, the industrial control equipment receives the picture sent by the visual camera and forwards the received picture to the picture decoding server.
Specifically, after the industrial control device receives the trigger signal sent by the electric eye, a unique serial number is generated, for example: 0D3A53E0-5691-4F46-8E6D-63DC11D4687F, while receiving pictures from the vision camera, in this embodiment a plurality of pictures (the vision camera continues to take pictures), the industrial control device marks the received pictures as unique serial number 0D3A53E0-5691-4F46-8E6D-63DC11D4687F and saves the pictures marked as unique serial number 0D3A53E0-5691-4F46-8E6D-63DC11D 4687F. The industrial control device then forwards the picture marked as unique serial number 0D3a53E0-5691-4F46-8E6D-63DC11D4687F to a picture decoding server.
S24, the picture decoding server receives the picture sent by the industrial control equipment, decodes the picture and returns a decoding result to the industrial control equipment.
The picture decoding server receives pictures sent by the industrial control equipment, decodes all code information in all the pictures, and can be a bar code or a variable code such as a one-dimensional code/two-dimensional code and the like, and forms a bar code data queue. The picture decoding server marks the unique serial number 0D3A53E0-5691-4F46-8E6D-63DC11D4687F for the bar code data queue, and generates decoding results, such as: 0D3A53E0-5691-4F46-8E6D-63DC11D4687F: the method comprises the steps of 1,2,3 and 4 …. The decoded result is then returned to the industrial control device.
S25, the industrial control equipment identifies the corresponding relation between the decoding result and the picture according to the comparison of the unique serial number marked in the decoding result and the unique serial number marked in the stored picture.
Specifically, after the industrial control equipment receives the decoding result, the industrial control equipment identifies the corresponding relation between the decoding result and the picture according to the comparison between the unique serial number 0D3A53E0-5691-4F46-8E6D-63DC11D4687F marked in the decoding result and the unique serial number 0D3A53E0-5691-4F46-8E6D-63DC11D4687F marked in the stored picture.
S26, taking non-repeated bar code data in a bar code data queue, and replacing the picture with the non-repeated bar code data.
Specifically, as the vision camera continuously shoots, part of the code information in the plurality of pictures received and forwarded by the industrial control equipment is repeated, but the reading rate is ensured, and finally, the non-repeated bar code data in the bar code data queue are taken, for example: the barcode1, 2, 3 and 4 are non-repeated bar code data, and the non-repeated bar code data is replaced with a picture marked as 0D3A53E0-5691-4F46-8E6D-63DC11D 4687F. Thus, the data of the bar codes or the variable codes such as the whole one-dimensional code/two-dimensional code are read, and the read data are namely the bar codes 1,2, 3 and 4.
In conclusion, the method for scanning the traceback code has high reliability, high expansibility and high availability, and can rapidly improve and adjust the reading rate of the one-dimensional code/two-dimensional code.
The description and applications of the present invention herein are illustrative and exemplary only and are not intended to limit the scope of the invention to the embodiments described above. Variations and modifications of the embodiments disclosed herein are fully possible and various alternatives and equivalents of the embodiments are known to those skilled in the art. It will also be apparent to those of skill in the art that the invention may be embodied in other forms, structures, arrangements, proportions, and with other components, materials, and parts, without departing from the spirit or essential characteristics thereof, and that other variations and modifications may be made in the embodiments disclosed herein without departing from the scope or spirit of the invention.
Claims (2)
1. A trace-back code scanning apparatus, comprising: the visual camera is connected with the industrial control equipment, and the industrial control equipment is also connected with the picture decoding server;
the electric eye is used for detecting the passing of objects and respectively sending trigger signals to the vision camera and the industrial control equipment;
the visual camera is configured to continuously take a picture after receiving a trigger signal sent by the electric eye, and send the picture to the industrial control device, where the industrial control device includes: the serial number generation unit is used for generating a unique serial number when receiving the trigger signal sent by the electric eye; the marking unit is used for marking the pictures received from the vision camera at the same time as the unique serial number; the memory unit is used for storing pictures marked as the unique serial numbers;
The industrial control device is configured to receive a picture sent by the visual camera after receiving a trigger signal sent by the electric eye, and forward the received picture marked as the unique serial number to the picture decoding server, where the picture decoding server includes: the decoding unit is used for decoding all code information in the picture and forming a bar code data queue; the decoding result generating unit is used for marking the unique serial numbers for the bar code data queue and generating the decoding result;
The picture decoding server is used for receiving pictures sent by the industrial control equipment, decoding the pictures and returning decoding results to the industrial control equipment;
The industrial control equipment further comprises an identification unit and a data replacement unit, wherein the identification unit is used for identifying the corresponding relation between the decoding result and the picture according to the comparison between the unique serial number marked in the decoding result and the unique serial number marked by the picture stored in the memory unit; the data replacing unit is used for taking the non-repeated bar code data in the bar code data queue and replacing the picture with the non-repeated bar code data.
2. A method for traceback code scanning, comprising the steps of:
S1, when an electric eye detects that an article passes through, respectively sending trigger signals to a vision camera and industrial control equipment;
S2, continuously photographing after the vision camera receives the trigger signal sent by the electric eye, and sending a picture to the industrial control equipment, wherein the industrial control equipment generates a unique serial number when receiving the trigger signal sent by the electric eye; marking pictures received simultaneously from the vision camera as the unique serial number; saving the picture marked as the unique serial number;
S3, after receiving the trigger signal sent by the electric eye, the industrial control equipment receives the picture sent by the visual camera and forwards the received picture marked as the unique serial number to a picture decoding server, wherein the picture decoding server decodes all code information in the picture and forms a bar code data queue; marking the unique serial number for the bar code data queue to generate the decoding result;
S4, the picture decoding server receives the picture sent by the industrial control equipment, decodes the picture and returns a decoding result to the industrial control equipment;
s5, the industrial control equipment identifies the corresponding relation between the decoding result and the picture according to the comparison of the unique serial number marked in the decoding result and the unique serial number marked by the stored picture;
s6, taking non-repeated bar code data in the bar code data queue, and replacing the picture with the non-repeated bar code data.
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| CN202011456785.5A CN112507747B (en) | 2020-12-10 | 2020-12-10 | Device and method for scanning traceability codes |
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| CN202011456785.5A CN112507747B (en) | 2020-12-10 | 2020-12-10 | Device and method for scanning traceability codes |
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