CN111589736A - Cigarette packet appearance detection device, detection method and cigarette packet packaging machine - Google Patents
Cigarette packet appearance detection device, detection method and cigarette packet packaging machine Download PDFInfo
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- CN111589736A CN111589736A CN202010499821.XA CN202010499821A CN111589736A CN 111589736 A CN111589736 A CN 111589736A CN 202010499821 A CN202010499821 A CN 202010499821A CN 111589736 A CN111589736 A CN 111589736A
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- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 208
- 238000001514 detection method Methods 0.000 title claims abstract description 76
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 7
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- 235000002637 Nicotiana tabacum Nutrition 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 30
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- 238000012545 processing Methods 0.000 claims description 25
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- 230000009467 reduction Effects 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 3
- 230000006870 function Effects 0.000 description 16
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241001292396 Cirrhitidae Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
- B07C5/362—Separating or distributor mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/22—Devices influencing the relative position or the attitude of articles during transit by conveyors
- B65G47/24—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles
- B65G47/248—Devices influencing the relative position or the attitude of articles during transit by conveyors orientating the articles by turning over or inverting them
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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 provisions for transferring data to distant stations, e.g. from a sensing device
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The disclosure relates to a cigarette packet appearance detection device, a detection method and a cigarette packet packaging machine. Tobacco bale outward appearance detection device includes: the cigarette packet turning mechanism is configured to turn the cigarette packet in the first turning position to a second turning position, and a first supporting contact surface of the cigarette packet in the first turning position is vertical to a second supporting contact surface of the cigarette packet in the second turning position; the industrial camera is positioned on the side of the conveying path of the cigarette packet and is configured to acquire, analyze and compare the cigarette packet image of the first supporting contact surface of the cigarette packet at the second overturning position so as to determine whether the appearance of the cigarette packet in the cigarette packet image meets the detection requirement; the removing mechanism is positioned on the side of the conveying path of the cigarette packet, positioned at the downstream of the cigarette packet turning mechanism and the industrial camera and configured to remove the cigarette packet; and the controller is in signal connection with the industrial camera and the rejecting mechanism and is configured to reject the tobacco packets which do not meet the detection requirement by the rejecting mechanism according to the recognition result of the industrial camera.
Description
Technical Field
The disclosure relates to the field of tobacco processing, in particular to a tobacco bale appearance detection device, a detection method and a tobacco bale packing machine.
Background
In the process that the cigarette packet is conveyed by the conveying equipment, the surface in contact with the surface of the conveying equipment cannot realize the appearance detection function. If the surface has an appearance problem, a defective product may be produced because it is not found. In the prior art, most of the cigarette packet appearance detection devices adopt an external industrial personal computer and a single chip microcomputer to realize the appearance detection functions of the front, rear, left, right and upper side surfaces of the cigarette packet, and the special industrial personal computer adopted by the device occupies a large space, is poor in installation manufacturability and reliability and is large in maintenance workload. On the other hand, the cigarette packet appearance detection device in the prior art has the defects of insufficient functions, unsafe operation and inconvenience.
Disclosure of Invention
In view of this, the embodiments of the present disclosure provide a cigarette packet appearance detection device, a detection method, and a cigarette packet packing machine, which can effectively realize appearance detection of a surface of a cigarette packet in surface contact with a conveying device.
In one aspect of the present disclosure, there is provided a cigarette pack appearance detecting device, including:
the cigarette packet turning mechanism is configured to turn the cigarette packet in a first turning position to a second turning position, and a first supporting contact surface of the cigarette packet in the first turning position is vertical to a second supporting contact surface of the cigarette packet in the second turning position;
the industrial camera is positioned on the side of the conveying path of the cigarette packet and is configured to acquire, analyze and compare cigarette packet images of the first supporting contact surface of the cigarette packet in the second overturning position so as to determine whether the appearance of the cigarette packet in the cigarette packet images meets the detection requirement;
the removing mechanism is positioned on the side of the conveying path of the tobacco bale, positioned at the downstream of the tobacco bale turning mechanism and the industrial camera and configured to remove the tobacco bale;
and the controller is in signal connection with the industrial camera and the rejecting mechanism and is configured to enable the rejecting mechanism to reject the cigarette packets which do not meet the detection requirement according to the recognition result of the industrial camera.
In some embodiments, the controller is coupled to the industrial camera via an opto-coupler.
In some embodiments, the industrial camera includes a camera processor and a first photocoupler, the first photocoupler is electrically connected with the camera processor and electrically connected with the power supply negative electrode and the command output terminal of the controller through an external trigger interface, respectively, the controller includes an internal circuit, a second photocoupler, an output circuit, the second photocoupler is electrically connected with the internal circuit and the output circuit, respectively, the output circuit is electrically connected with a positive common terminal and includes the command output terminal of the controller electrically connected with the external trigger interface of the first photocoupler.
In some embodiments, the industrial camera includes a camera processor and a first photocoupler electrically connected to the camera processor and electrically connected to a negative terminal of a power supply and a signal input terminal of a controller through an external trigger interface, respectively, and the controller includes a processor and a second photocoupler electrically connected to the processor and a positive common terminal, respectively, and including a signal input terminal of the controller electrically connected to the external trigger interface of the first photocoupler.
In some embodiments, the industrial camera comprises:
the photographing module is configured to trigger cigarette packet image acquisition operation in each process step period;
the image processing module is in signal connection with the photographing module, is configured to perform at least one of color gain adjustment, white balance correction, saturation adjustment, color lookup table conversion and noise reduction on the cigarette packet image acquired by the photographing module, and converts the original format of the cigarette packet image into a bitmap format;
the image superposition analysis module is in signal connection with the image processing module and is configured to superpose at least one of a cross line, an automatic exposure reference window and a white balance reference window on the cigarette packet image processed by the image processing module so as to determine a region to be analyzed in the cigarette packet image;
the image storage module is in signal connection with the image superposition module and the image processing module and is configured to store at least one of the cigarette packet image processed by the image processing module and the cigarette packet image superposed by the image superposition module;
and the image judging module is in signal connection with the image storage module and is configured to extract the characteristic value of the cigarette packet image and compare the characteristic value with the items in the preset defect image database to determine whether the cigarette packet image meets the detection requirement and the defect type of the cigarette packet image which does not meet the detection requirement.
In some embodiments, the industrial camera further comprises:
and the defect mark adding module is in signal connection with the image judging module and is configured to add marks to the defect parts in the cigarette packet image.
In some embodiments, the cigarette packet appearance detecting device further includes:
the bar code recognizer is in signal connection with the controller and is configured to recognize a bar code in the first supporting contact surface of the cigarette packet in the second overturning position;
the controller is configured to judge whether the identified bar codes are wrong or not, and enable the eliminating mechanism to eliminate the cigarette packets containing wrong bar codes according to the judgment result.
In some embodiments, the cigarette packet appearance detecting device further includes:
a display screen in signal connection with the industrial camera, configured to present an original image or a processed image of the cigarette packet.
In one aspect of the disclosure, a cigarette packet packaging machine is provided, which comprises the cigarette packet appearance detection device.
In an aspect of the present disclosure, a detection method based on the foregoing cigarette packet appearance detection device is provided, including:
turning the cigarette packet in the first turning position to a second turning position, wherein a first supporting contact surface of the cigarette packet in the first turning position is vertical to a second supporting contact surface of the cigarette packet in the second turning position;
collecting, analyzing and comparing cigarette packet images of the first supporting contact surface of the cigarette packet at the second overturning position to determine whether the appearance of the cigarette packet in the cigarette packet images meets the detection requirement;
and removing tobacco packets which do not meet the detection requirements according to the identification result of the industrial camera.
In some embodiments, the operation of acquiring, analyzing and comparing cigarette packet images of the first support contact surface of the cigarette packet in the second flipped position comprises:
loading and initializing a software development kit of the industrial camera;
calling an enumeration function to obtain a device list of the currently connected industrial camera;
performing device initialization on the industrial cameras in the device list;
causing the industrial camera to enter an operational mode and enabling the software development kit to receive images captured by the industrial camera;
triggering the tobacco bale image acquisition operation in each process step period through the industrial camera;
performing at least one of color gain adjustment, white balance correction, saturation adjustment, color lookup table conversion and noise reduction on the cigarette packet image acquired by the photographing module, and converting the original format of the cigarette packet image into a bitmap format;
superposing at least one of a cross line, an automatic exposure reference window and a white balance reference window on the processed cigarette packet image to determine a region to be analyzed in the cigarette packet image;
storing at least one of the processed cigarette packet image and the overlapped cigarette packet image;
and extracting the characteristic value of the cigarette packet image, and comparing the characteristic value with the items in the preset defect image database to determine whether the cigarette packet image meets the detection requirement and the defect type of the cigarette packet image which does not meet the detection requirement.
In some embodiments, the detection method further comprises:
and marking and adding the defective parts in the cigarette packet image.
In some embodiments, the detection method further comprises:
identifying the bar code in the first supporting contact surface of the cigarette packet at the second overturning position;
and judging whether the identified bar codes are wrong or not, and rejecting the cigarette packet containing wrong bar codes according to a judgment result.
Therefore, according to the embodiment of the disclosure, the cigarette packet is turned over through the cigarette packet turning mechanism, so that the image of the supporting contact surface which is not subjected to appearance detection can be acquired by the industrial camera, the cigarette packet image is processed by the industrial camera, whether the detection requirement is met or not is judged, and the cigarette packet which is not met with the requirement is removed through the removing mechanism, so that the appearance detection and treatment of the surface of the cigarette packet in surface contact with the conveying equipment are effectively realized, and the generation of defective products is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of some embodiments of a cigarette packet appearance detecting device according to the present disclosure;
fig. 2 is a block schematic diagram of some embodiments of a cigarette packet appearance detecting device according to the present disclosure;
fig. 3 and 4 are schematic diagrams of signal connections of inputs and outputs between an industrial camera and a controller, respectively, according to some embodiments of the cigarette packet appearance inspection device of the present disclosure;
fig. 5 is a block schematic diagram of the interior of an industrial camera in some embodiments of a cigarette pack appearance inspection device according to the present disclosure;
FIG. 6 is a schematic flow diagram of some embodiments of a detection method according to the present disclosure;
fig. 7 is a schematic flow chart of specific steps included in step 200 in some embodiments of detection methods according to the present disclosure.
It should be understood that the dimensions of the various parts shown in the figures are not drawn to scale. Further, the same or similar reference numerals denote the same or similar components.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.
All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
Fig. 1 is a schematic structural view of some embodiments of the cigarette packet appearance detecting device according to the present disclosure. Referring to fig. 1 in conjunction with fig. 2-5, in some embodiments, the cigarette packet appearance detecting device includes: tobacco bale tilting mechanism 10, industrial camera 20, rejection mechanism 40 and controller 30. The packet 7 of cigarettes, which is in the first overturned position in fig. 1, moves in the direction indicated by the arrow in fig. 1, and the guide means (for example the two sets of flaps 11, which are located on either side of the packet 7 of cigarettes in fig. 1) are able to keep the first supporting contact surface 71 of the packet 7 of cigarettes in contact with the surface 12 of the conveyor means (for example the conveyor belt) for supporting and carrying the packet 7 in motion.
After the cigarette packet 7 moves out of the guide range of the two groups of baffle plates 11, the cigarette packet 7 is turned to a second turning position (namely, the cigarette packet 7' in the second turning position) through the cigarette packet turning mechanism 10. The first supporting contact surface 71 of the packet 7 of cigarettes in the first overturned position is perpendicular to the second supporting contact surface of the packet of cigarettes in the second overturned position. Here, the first support contact surface 71 is the surface of the packet 7 of cigarettes in the first turned position in contact with the surface 12, and the second support contact surface is the surface of the packet 7' of cigarettes in the second turned position in contact with the surface 12.
The industrial camera 20 is located at a side of the conveying path of the cigarette packet, and is configured to acquire, analyze and compare the cigarette packet image of the first supporting contact surface 71 of the cigarette packet 7' in the second turning position to determine whether the appearance of the cigarette packet in the cigarette packet image meets the detection requirement. In some embodiments, the industrial camera 20 may employ a Mindvision Smart CCD camera.
The rejecting mechanism 40 is located at the side of the conveying path of the cigarette packet, is located at the downstream of the cigarette packet turning mechanism 10 and the industrial camera 20, and is configured to reject the cigarette packet. The rejecting mechanism 40 may reject the cigarette packet by a contact or non-contact manner, for example, the cigarette packet is separated from the current conveying path by an electric push rod, a pneumatic push rod, a high-pressure air valve, or the like.
The controller 30 is in signal connection with the industrial camera 20 and the rejecting mechanism 40, and is configured to cause the rejecting mechanism 40 to reject cigarette packets which do not meet the detection requirement according to the recognition result of the industrial camera 20. In some embodiments, the controller may be a programmable logic controller, such as a Micro II control system.
This embodiment overturns the tobacco bale through tobacco bale tilting mechanism to make the image of the support contact surface that is not detected by the outward appearance can be gathered by industry camera, utilize industry camera to handle the tobacco bale image, and judge whether accord with the testing requirement, then reject through rejecting the mechanism to the tobacco bale that does not accord with the requirement, thereby realize the outward appearance detection and the processing on tobacco bale and the surface of conveying equipment face contact effectively, reduce the production of defect product.
Referring to fig. 1 and 2, in some embodiments, the cigarette packet appearance detection device further includes a barcode identifier 50. A barcode identifier 50 is in signal connection with the controller 30 and is configured to identify a barcode in the first supporting contact surface 71 of a cigarette packet in the second flipped position. The barcode identifier 50 may be disposed adjacent to the industrial camera or integrally with the industrial camera as a component of the industrial camera. In some embodiments, the first supporting contact surface 71 of the cigarette packet is provided with a barcode, the industrial camera can recognize the presence or absence of the barcode, pattern defects of the barcode, and other cigarette packet image contents, and the barcode identifier can further read and verify whether the barcode is correct, so that the controller 30 can judge whether the recognized barcode is wrong, and enable the rejecting mechanism 40 to reject the cigarette packet containing the wrong barcode according to the judgment result.
In order to facilitate understanding of the detection of the appearance of the cigarette packet, in some embodiments, the cigarette packet appearance detection device further includes a display screen 60. A display screen 60 may be in signal connection with the industrial camera 20, configured to present an original image or a processed image of the cigarette pack. In other embodiments, display screen 60 may also be in signal communication with controller 30 for presentation based on images associated with the cigarette packets provided by controller 30 or parameters associated with processing or testing.
In order to protect the respective working safety of the industrial camera and the controller, in some embodiments, the controller 30 is connected to the industrial camera 20 through an opto-coupler, and input and output isolation is achieved through the opto-coupler, so that interference on the other side when a line overload occurs at any one end is avoided.
Referring to fig. 3, in some embodiments, the industrial camera 20 includes a camera processor and a first photo coupler electrically connected to the camera processor and to the power supply negative electrode and the command output terminal of the controller 30 through the external trigger interface, respectively. The controller 30 includes an internal circuit, a second photo coupler, and an output circuit, and the second photo coupler is electrically connected to the internal circuit and the output circuit, respectively. The output circuit is electrically connected to the positive common terminal and includes an instruction output terminal of the controller 30 electrically connected to the external trigger interface of the first photocoupler. The controller 30 sends a control signal to the external trigger interface of the industrial camera through the instruction output end, for example, when the external trigger interface is changed from 0V to 5-24V, a rising edge signal for triggering the industrial camera to take a picture can be realized. And the first photoelectric coupler and the second photoelectric coupler can realize double protection of the industrial camera and the controller at two ends.
Referring to fig. 4, in some embodiments, the industrial camera 20 includes a camera processor and a first photo coupler electrically connected to the camera processor and to the power supply cathode and the signal input terminal of the controller 30 through the external trigger interface, respectively. The controller 30 includes a processor and a second photoelectric coupler, the second photoelectric coupler is electrically connected to the processor and the positive common terminal, respectively, and includes a signal input terminal of the controller 30 electrically connected to the external trigger interface of the first photoelectric coupler. After judging whether the cigarette packet meets the requirement, the industrial camera 20 may output a control signal to the signal input end of the controller through the external trigger interface, for example, when the external trigger interface is changed from 0V to 5-24V, a rising edge signal for triggering the controller to reject the cigarette packet may be implemented. And the first photoelectric coupler and the second photoelectric coupler can realize double protection of the industrial camera and the controller at two ends.
Referring to fig. 5, in some embodiments, the industrial camera 20 includes: the system comprises a photographing module 21, an image processing module 22, an image superposition analysis module 23, an image storage module 24 and an image judgment module 25. Here, the image processing module 22, the image overlay analysis module 23, the image storage module 24 and the image determination module 25 may be implemented by HALCON vision software. The photographing module 21 can trigger the cigarette packet image acquisition operation in each process step period. The cigarette packet image capturing operation here may be a single or multiple photographing operation of the photographing module 21 or a continuous photographing operation.
The image processing module 22 is in signal connection with the photographing module 21. The image processing module 22 can perform at least one of color gain adjustment, white balance correction, saturation adjustment, color lookup table conversion, and noise reduction on the cigarette packet image acquired by the photographing module 21, and convert the original format of the cigarette packet image into a bitmap format. The cigarette packet image in the original format obtained by the photographing module 21 is improved in image quality by the image processing module 22, and is converted into a bitmap format which can be processed in subsequent steps.
The image superposition analysis module 23 is in signal connection with the image processing module 22. The image superposition analysis module 23 can superpose at least one of a cross line, an automatic exposure reference window and a white balance reference window on the tobacco bale image processed by the image processing module 22 to determine a region to be analyzed in the tobacco bale image. The image superposition analysis module 23 may divide the tobacco bale image into a plurality of regions through at least one of a cross line, an automatic exposure reference window and a white balance reference window, and count the RGB value and the luminance value of each region respectively, and adjust the color brightness and the balance of the tobacco bale image through these statistical information, so as to obtain a tobacco bale image with higher quality.
The image storage module 24 is in signal connection with the image superimposing module and the image processing module 22. The image storage module 24 may be implemented by using an existing hard disk memory, such as an SSD hard disk. The image storage module 24 can store at least one of the cigarette packet image processed by the image processing module 22 and the cigarette packet image superimposed by the image superimposing module.
The image judging module 25 is in signal connection with the image storage module 24. The image judgment module 25 extracts the characteristic value of the tobacco bale image, and determines whether the tobacco bale image meets the detection requirement and the defect type of the tobacco bale image which does not meet the detection requirement by comparing the characteristic value with the items in the preset defect image database. The defect image database can be stored in the SSD hard disk, and the feature vectors corresponding to a plurality of defect types can be stored in the database so as to conveniently determine the defect types through comparison.
To facilitate the understanding of the defective position of the cigarette packet by the equipment operator, referring to fig. 5, in some embodiments, the industrial camera 20 further comprises a defect label adding module 26. The defect mark adding module 26 is in signal connection with the image judging module 25, and is configured to add a mark to a defect portion in the cigarette packet image.
The embodiment of the cigarette packet appearance detection device can be suitable for multiple links in the field of tobacco production, such as a cigarette packet packaging link. Correspondingly, the embodiment of the disclosure also provides a cigarette packet packaging machine, which comprises any one of the embodiments of the cigarette packet appearance detection device.
Based on the cigarette packet appearance detection device, the embodiment of the disclosure also provides a corresponding detection method. Fig. 6 is a schematic flow chart diagram of some embodiments of a detection method according to the present disclosure. Referring to fig. 6, the detection method includes:
and step 300, removing tobacco packets which do not meet the detection requirements according to the recognition result of the industrial camera 20.
Referring to fig. 7, in the above embodiment, the operation of acquiring, analyzing and comparing the cigarette packet image of the first supporting contact surface 71 of the cigarette packet in the second turnover position in step 200 may include:
and step 209, extracting the characteristic value of the tobacco bale image, and comparing the characteristic value with the items in the preset defect image database to determine whether the tobacco bale image meets the detection requirement and the defect type of the tobacco bale image which does not meet the detection requirement. The operation of extracting and comparing the characteristic values of the tobacco bale images can adopt the existing image processing algorithm, and the description is omitted.
In some embodiments, the detection method further comprises: and marking and adding the defective parts in the cigarette packet image.
In some embodiments, the detection method further comprises: identifying the bar code in the first supporting contact surface 71 of the cigarette packet in the second overturning position; and judging whether the identified bar codes are wrong or not, and rejecting the cigarette packet containing wrong bar codes according to a judgment result.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (13)
1. A tobacco bale outward appearance detection device which characterized in that includes:
the cigarette packet turning mechanism is configured to turn the cigarette packet in a first turning position to a second turning position, and a first supporting contact surface of the cigarette packet in the first turning position is vertical to a second supporting contact surface of the cigarette packet in the second turning position;
the industrial camera is positioned on the side of the conveying path of the cigarette packet and is configured to acquire, analyze and compare cigarette packet images of the first supporting contact surface of the cigarette packet in the second overturning position so as to determine whether the appearance of the cigarette packet in the cigarette packet images meets the detection requirement;
the removing mechanism is positioned on the side of the conveying path of the tobacco bale, positioned at the downstream of the tobacco bale turning mechanism and the industrial camera and configured to remove the tobacco bale;
and the controller is in signal connection with the industrial camera and the rejecting mechanism and is configured to enable the rejecting mechanism to reject the cigarette packets which do not meet the detection requirement according to the recognition result of the industrial camera.
2. The cigarette packet appearance detecting device according to claim 1, wherein the controller is connected to the industrial camera through a photocoupler.
3. The cigarette package appearance detection device according to claim 2, wherein the industrial camera includes a camera processor and a first photoelectric coupler, the first photoelectric coupler is electrically connected with the camera processor and is electrically connected with the power supply negative electrode and the command output end of the controller through an external trigger interface, respectively, the controller includes an internal circuit, a second photoelectric coupler, and an output circuit, the second photoelectric coupler is electrically connected with the internal circuit and the output circuit, respectively, the output circuit is electrically connected with a positive common terminal and includes the command output end of the controller electrically connected with the external trigger interface of the first photoelectric coupler.
4. The cigarette package appearance detection device according to claim 2, wherein the industrial camera includes a camera processor and a first photoelectric coupler, the first photoelectric coupler is electrically connected with the camera processor and is respectively electrically connected with the negative electrode of the power supply and the signal input end of the controller through an external trigger interface, the controller includes a processor and a second photoelectric coupler, the second photoelectric coupler is respectively electrically connected with the processor and the positive common end, and includes the signal input end of the controller electrically connected with the external trigger interface of the first photoelectric coupler.
5. The cigarette package appearance detection device according to claim 1, wherein the industrial camera includes:
the photographing module is configured to trigger cigarette packet image acquisition operation in each process step period;
the image processing module is in signal connection with the photographing module, is configured to perform at least one of color gain adjustment, white balance correction, saturation adjustment, color lookup table conversion and noise reduction on the cigarette packet image acquired by the photographing module, and converts the original format of the cigarette packet image into a bitmap format;
the image superposition analysis module is in signal connection with the image processing module and is configured to superpose at least one of a cross line, an automatic exposure reference window and a white balance reference window on the cigarette packet image processed by the image processing module so as to determine a region to be analyzed in the cigarette packet image;
the image storage module is in signal connection with the image superposition module and the image processing module and is configured to store at least one of the cigarette packet image processed by the image processing module and the cigarette packet image superposed by the image superposition module;
and the image judging module is in signal connection with the image storage module and is configured to extract the characteristic value of the cigarette packet image and compare the characteristic value with the items in the preset defect image database to determine whether the cigarette packet image meets the detection requirement and the defect type of the cigarette packet image which does not meet the detection requirement.
6. The cigarette package appearance detection device according to claim 5, wherein the industrial camera further comprises:
and the defect mark adding module is in signal connection with the image judging module and is configured to add marks to the defect parts in the cigarette packet image.
7. The cigarette package appearance detection device according to claim 1, further comprising:
the bar code recognizer is in signal connection with the controller and is configured to recognize a bar code in the first supporting contact surface of the cigarette packet in the second overturning position;
the controller is configured to judge whether the identified bar codes are wrong or not, and enable the eliminating mechanism to eliminate the cigarette packets containing wrong bar codes according to the judgment result.
8. The cigarette package appearance detection device according to claim 1, further comprising:
a display screen in signal connection with the industrial camera, configured to present an original image or a processed image of the cigarette packet.
9. A cigarette packet packaging machine characterized by comprising the cigarette packet appearance detection device according to any one of claims 1 to 8.
10. A detection method based on the cigarette packet appearance detection device according to any one of claims 1 to 8, characterized by comprising:
turning the cigarette packet in the first turning position to a second turning position, wherein a first supporting contact surface of the cigarette packet in the first turning position is vertical to a second supporting contact surface of the cigarette packet in the second turning position;
collecting, analyzing and comparing cigarette packet images of the first supporting contact surface of the cigarette packet at the second overturning position to determine whether the appearance of the cigarette packet in the cigarette packet images meets the detection requirement;
and removing tobacco packets which do not meet the detection requirements according to the identification result of the industrial camera.
11. The inspection method of claim 10, wherein the operation of acquiring, analyzing and comparing cigarette packet images of the first support contact surface of the cigarette packet in the second flipped position comprises:
loading and initializing a software development kit of the industrial camera;
calling an enumeration function to obtain a device list of the currently connected industrial camera;
performing device initialization on the industrial cameras in the device list;
causing the industrial camera to enter an operational mode and enabling the software development kit to receive images captured by the industrial camera;
triggering the tobacco bale image acquisition operation in each process step period through the industrial camera;
performing at least one of color gain adjustment, white balance correction, saturation adjustment, color lookup table conversion and noise reduction on the cigarette packet image acquired by the photographing module, and converting the original format of the cigarette packet image into a bitmap format;
superposing at least one of a cross line, an automatic exposure reference window and a white balance reference window on the processed cigarette packet image to determine a region to be analyzed in the cigarette packet image;
storing at least one of the processed cigarette packet image and the overlapped cigarette packet image;
and extracting the characteristic value of the cigarette packet image, and comparing the characteristic value with the items in the preset defect image database to determine whether the cigarette packet image meets the detection requirement and the defect type of the cigarette packet image which does not meet the detection requirement.
12. The detection method according to claim 11, further comprising:
and marking and adding the defective parts in the cigarette packet image.
13. The detection method according to claim 10, further comprising:
identifying the bar code in the first supporting contact surface of the cigarette packet at the second overturning position;
and judging whether the identified bar codes are wrong or not, and rejecting the cigarette packet containing wrong bar codes according to a judgment result.
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