Cigarette detection device based on machine vision technology

Abstract

The utility model provides a cigarette detection device based on a machine vision technology, which comprises a tobacco shred image acquisition module used for acquiring image information of a tobacco shred end of a cigarette; the filter tip image acquisition module is used for acquiring image information of the cigarette filter tip end; the tobacco shred image acquisition module is electrically connected with the first visual processor, and the first visual processor is used for acquiring tobacco shred end image information acquired by the tobacco shred image acquisition module and analyzing and judging the tobacco shred end image information; the filter tip image acquisition module is electrically connected with the second visual processor, the second visual processor is used for acquiring filter tip end image information acquired by the filter tip image acquisition module and analyzing and judging the filter tip end image information, and the first visual processor and the second visual processor are connected with the human-computer interface through the Ethernet switch. The problems that in the prior art, a dynamic photoelectric detection mode is tedious in setting and low in detection accuracy are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette detection, in particular to a cigarette detection device based on machine vision technology, which is used for detecting defects such as empty ends and missing cigarettes in a mold box of a packaging machine. Background Art

[0002] In order to ensure the quality of cigarettes produced by the FOCKE-F5 packaging machine, it is necessary to install a cigarette detection device to detect whether there are defects such as empty ends or missing cigarettes in the cigarette packs.

[0003] At present, the packaging unit uses a dynamic photoelectric detection device, which has two photoelectric sensors at both ends of the cigarettes. Following the movement of the robotic arm, the photoelectric sensors emit infrared light to the ends of the cigarettes, and the light is reflected back to the receiving tube through the ends of the cigarettes. The detection device determines whether there is a defect at the end of the cigarette by the strength of the received light signal. This detection device is cumbersome to set up, and it is difficult to restore after disassembly and maintenance. It has low accuracy in detecting reversed cigarettes and residual cigarettes, and cannot detect cigarettes with special patterns on the filter ends. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a cigarette detection device based on machine vision technology, which is used to solve the problems of complicated settings and low detection accuracy of the dynamic photoelectric detection method in the prior art.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a cigarette detection device based on machine vision technology, including a tobacco image acquisition module, the tobacco image acquisition module is used to acquire image information of the tobacco end of the cigarette; a filter image acquisition module, the filter image acquisition module is used to acquire image information of the filter end of the cigarette; a first visual processor, the tobacco image acquisition module is electrically connected to the first visual processor, the first visual processor is used to obtain the tobacco end image information acquired by the tobacco image acquisition module, and analyze and judge the acquired tobacco end image information; a second visual processor, the filter image acquisition module is electrically connected to the second visual processor, the second visual processor is used to acquire the filter end image information acquired by the filter image acquisition module, and analyze and judge the acquired filter end image information; a human-computer interface, the first visual processor and the second visual processor are connected to the human-computer interface via an Ethernet switch.

[0006] Preferably, the tobacco image acquisition module includes a first shell, a first optical lens and a first industrial camera, wherein a first transparent window is provided on the first shell, a plane mirror is provided on an inner side wall of the first shell, and the plane mirror and the first transparent window form a certain angle so that the cigarette can be imaged in the plane mirror through the first transparent window, the first industrial camera is arranged inside the first shell, the first industrial camera is used to obtain image information of the tobacco end of the cigarette in the plane mirror, and the first optical lens is connected to the first industrial camera.

[0007] Preferably, the first industrial camera is fixed inside the first shell by a first camera bracket.

[0008] Preferably, it further comprises a first LED light source, wherein the first LED light source is arranged inside the first shell.

[0009] Preferably, the filter image acquisition module includes a second shell, a second industrial camera and a second optical lens, wherein the second shell is provided with a second transparent window, the second industrial camera is arranged inside the second shell, and the shooting direction of the second industrial camera is perpendicular to the second transparent window, and the second optical lens is connected to the second industrial camera.

[0010] Preferably, a second camera bracket is provided in the second shell, and the second industrial camera is fixedly disposed inside the second shell via the second camera bracket.

[0011] Preferably, a second LED light source is further provided inside the second shell.

[0012] Preferably, the system further comprises a control box, wherein the first visual processor and the second visual processor are both arranged inside the control box.

[0013] Preferably, a cooling fan is provided inside the control box.

[0014] Preferably, the Ethernet switch is also arranged in the control box.

[0015] As described above, the cigarette detection device based on machine vision technology of the utility model has the following beneficial effects: the cigarette detection device based on machine vision technology of the utility model can realize the conventional empty and missing defect detection, and can also detect residual cigarettes, reversed cigarettes and cigarettes with special patterns on the filter end, which can further effectively ensure the quality of cigarette packs and prevent defective cigarette packs from entering the market; at the same time, the detection device can provide a human-computer interactive operation interface through the setting of the human-computer interface, so that the detection information is visualized, which is convenient for users to view the detection information and collected images and set parameters, etc., with simple setting and high detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a structural block diagram of the cigarette detection device based on machine vision technology provided by the utility model.

[0017] Figure 2 Shown is a structural schematic diagram of the tobacco image acquisition module provided by the utility model.

[0018] Figure 3 Shown is a structural schematic diagram of the filter tip image acquisition module provided by the utility model.

[0019] Figure 4 Shown is a schematic structural diagram of the control box provided by the utility model.

[0020] Description of Reference Numerals

[0021] 10 Tobacco image acquisition module

[0022] 11. First Shell

[0023] 110 First Transparent Window

[0024] 111 plane mirror

[0025] 112 First cable socket interface

[0026] 12 First Industrial Camera

[0027] 121 First Camera Bracket

[0028] 13. First Optical Lens

[0029] 14 The first LED light source

[0030] 20 Filter image acquisition module

[0031] 21 Second Shell

[0032] 210 Second transparent window

[0033] 211 Second cable socket interface

[0034] 22 Second Industrial Camera

[0035] 221 Second Camera Bracket

[0036] 23 Second optical lens

[0037] 24 Second LED light source

[0038] 30 First Vision Processor

[0039] 40 Second Vision Processor

[0040] 50 Human Machine Interface

[0041] 60 Ethernet switch

[0042] 70 Control Box

[0043] 71 Cooling fan

[0044] 72 Terminal Blocks

[0045] 701 I / O Interface DETAILED DESCRIPTION

[0046] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0047] It should be noted that, throughout the specification, when a device is said to be "connected" to another device, this includes not only the case of "direct connection" but also the case of "indirect connection" by placing other elements therebetween. In addition, when a device is said to "include" a certain component, unless otherwise stated, it does not exclude other components, but means that other components may be included.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the representation of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] See also Figures 1 to 4 It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the utility model, and the drawings only show the components related to the utility model rather than the number, shape and size of the components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0050] The utility model provides a cigarette detection device based on machine vision technology, such as Figure 1As shown, the detection device includes a tobacco image acquisition module 10, a filter image acquisition module 20, a first visual processor 30, a second visual processor 40 and a human-machine interface 50, wherein the tobacco image acquisition module 10 is used to acquire image information of the tobacco end of a cigarette, the filter image acquisition module 20 is used to acquire image information of the filter end of a cigarette, and the tobacco image acquisition module 10 is electrically connected to the first visual processor 30, the first visual processor 30 is used to obtain the image information of the tobacco end acquired by the tobacco image acquisition module 10, and analyze and judge the image information of the tobacco end; the filter image acquisition module 20 is electrically connected to the second visual processor 40, the second visual processor 40 is used to acquire the image information of the filter end acquired by the filter image acquisition module 20, and analyze and judge the image information of the filter end; the first visual processor 30 and the second visual processor 40 are also connected to the human-machine interface 50 via an Ethernet switch 60.

[0051] When the cigarette detection device based on machine vision technology of the utility model is in use, the first visual processor 30 and the second visual processor 40 in the detection device are connected to the control system of the packaging machine, and the tobacco end image information and the filter end image information of the cigarette are respectively collected through the tobacco image acquisition module 10 and the filter tip image acquisition module 20. After the first visual processor 30 and the second visual processor 40 respectively analyze and judge the received tobacco end image information and filter tip image information, when defects such as empty ends, missing cigarettes, reversed cigarettes or special-shaped patterns are detected in the cigarette package, the first visual processor 30 and / or the second visual processor 40 will send a rejection signal to the packaging machine control system, and the packaging machine control system will reject the defective cigarette packages at the corresponding positions. Compared with the prior art, the cigarette inspection device of the utility model based on machine vision technology can realize conventional empty and missing defect detection, and can also detect residual cigarettes, reversed cigarettes and cigarettes with special patterns on the filter end, which can further effectively ensure the quality of cigarette packs and prevent defective cigarette packs from entering the market; at the same time, the inspection device can provide a human-computer interactive operation interface through the setting of the human-computer interface, so that the inspection information is visualized, which makes it convenient for users to view the inspection information and collected images and set parameters.

[0052] Specifically, when the first visual processor 30 analyzes the tobacco end image information collected by the tobacco image acquisition module 10 to determine whether the cigarette has a hollow end, the specific method is that when there is a hollow end at the tobacco end of the cigarette, the tobacco end image information collected by the tobacco image acquisition module 10 will have a portion of white coil paper. The greater the hollow end of the cigarette, the smaller the tobacco area in the collected tobacco end image information, and the larger the white coil paper area. Therefore, the first visual processor 30 determines whether the cigarette has a hollow end based on the image area of ​​the tobacco area in the received tobacco end image information.

[0053] It should be particularly noted that the method by which the first processor and the second processor analyze and judge the obtained image information can be specifically implemented using some existing technologies, and the present application does not require improvements to software methods.

[0054] Specifically, when there are missing cigarettes, missing tips, and reversed cigarettes in the cigarette pack, the filter tip end image information collected by the filter tip image acquisition module 20 will have an area with a significantly darkened color, which is in sharp contrast to the white image of the normal filter tip end. Therefore, the second visual processor 40 can judge whether there are missing cigarettes, missing tips, and reversed cigarette defects in the cigarette pack based on this. At the same time, based on the filter tip image information collected by the filter tip image acquisition module 20, the second visual processor 40 can also detect whether there are special-shaped patterns on the filter tip end of the cigarette.

[0055] Specifically, Figure 2 As shown, in this embodiment, the tobacco image acquisition module 10 includes a first shell 11, a first transparent window 110 is provided on the first shell 11, a plane mirror 111 is provided on an inner side wall of the first shell 11, and the plane mirror 111 and the first transparent window 110 form a certain angle so that the cigarette can be imaged in the plane mirror 111 through the first transparent window 110, and a first industrial camera 12 and a first optical lens 13 are provided inside the first shell 11, and the first optical lens 13 is connected and installed on the first industrial camera 12, and the first industrial camera 12 is used to obtain the image information of the tobacco end of the cigarette in the plane mirror 111, that is, the first industrial camera 12 shoots the cigarette imaged in the plane mirror 111 to obtain the image information of the tobacco end of the cigarette.

[0056] Furthermore, in order to effectively reduce the impact of on-site dust on the image information captured by the first industrial camera 12, preferably, in this embodiment, the first housing 11 is of an integrated sealed design.

[0057] Further, in order to improve the clarity of the image information of the tobacco end taken by the first industrial camera 12, preferably, as Figure 2 As shown, in this embodiment, a first LED light source 14 is further provided inside the first housing 11, and the first LED light source 14 illuminates the cigarette through the first transparent window 110 at a certain angle. Figure 2 As shown, in this embodiment, a first camera bracket 121 is provided inside the first shell 11 , the first industrial camera 12 is fixedly disposed inside the first shell 11 through the first camera bracket 121 , and the first LED light source 14 is also disposed on the first camera bracket 121 .

[0058] Further, such as Figure 2As shown, in this embodiment, the first housing 11 is further provided with a first cable socket interface 112, and the signal cable of the first industrial camera 12, the trigger signal cable and the cable of the first LED light source are all led out from the right side of the first housing 11 through the first cable socket interface 112. Through this structural design, the structure is simple and convenient to connect.

[0059] Specifically, Figure 3 As shown, in this embodiment, the filter tip image acquisition module 20 includes a second housing 21, a second transparent window 210 is provided on the second housing 21, a second industrial camera 22 and a second optical lens 23 are provided inside the second housing 21, the second optical lens 23 is mounted on the second industrial camera 22, and the shooting direction of the second industrial camera 22 is perpendicular to the second transparent window 210. During operation, the second industrial camera 22 shoots an image of the filter tip end of the cigarette through the second transparent window 210.

[0060] Furthermore, in order to effectively reduce the impact of on-site dust on the shooting of the second industrial camera 22, preferably, in this embodiment, the second housing 21 is an integrated sealed design. In order to improve the clarity of the filter tip end image information shot by the second industrial camera 22, preferably, in this embodiment, a second LED light source 24 is further provided inside the second housing 21. Specifically, two second LED light sources 24 are provided, and the two second LED light sources 24 are respectively arranged on both sides inside the second housing 21.

[0061] Furthermore, in the present embodiment, a second camera bracket 221 is provided in the second shell 21 , and the second industrial camera 22 is fixedly disposed inside the second shell via the second camera bracket 221 .

[0062] Further, such as Figure 3 As shown, in this embodiment, a second cable socket interface 211 is further provided on the second housing 21, and the signal cable of the second industrial camera 22, the trigger signal cable and the cable of the second LED light source are all led out from the right side of the second housing 21 through the second cable socket interface 211. Through this structural design, the structure is simple and convenient to connect.

[0063] Specifically, in this embodiment, the first transparent window 110 and the second transparent window 210 are both transparent glass windows.

[0064] Further, such as Figure 1 and Figure 4As shown, in this embodiment, the detection device further includes a control box 70, and the first visual processor 30 and the second visual processor 40 are both arranged inside the control box 70. Specifically, the Ethernet switch 60 is also arranged in the control box 70. Through this structural design, the first visual processor 30 and the second visual processor 40 can be protected.

[0065] Preferably, Figure 1 and Figure 4 As shown, in order to improve the processing efficiency of the first visual processor 30 and the second visual processor 40 , a cooling fan 71 is further provided in the control box 70 , and the cooling fan 71 is used to dissipate the heat of the first visual processor 30 and the second visual processor 40 .

[0066] Specifically, Figure 4 As shown, in this embodiment, a connection terminal 72 is further provided in the control box 70, and an I / O interface 701 is provided on the side panel of the control box 70. When in use, the first visual processor 30 and the second visual processor 40 in the control box 70 are connected to the control system of the packaging machine through the connection terminal 72 and the I / O interface 701 provided on the side panel of the control box 70.

[0067] Specifically, the USB port, VGA port, etc. of the first visual processor 30 and the second visual processor 40 inside the control box 70 are all connected to the top of the control box through an adapter cable, thereby facilitating debugging.

[0068] Specifically, in this embodiment, the human-machine interface adopts an all-in-one machine with a touch display screen, which can not only run the human-machine interface program, but also provide a human-machine interactive operation interface. The main panel is provided with an enable button for display opening, a sound adjustment button, a brightness adjustment button, etc., and also includes a USB port for connecting to a USB device.

[0069] In summary, the cigarette detection device based on machine vision technology of the utility model can not only realize conventional empty and missing cigarette defect detection on cigarette packs, but also detect residual cigarettes, reversed cigarettes and cigarettes with special-shaped patterns on the filter tip, so as to further effectively ensure the quality of cigarette packs. At the same time, the detection device also provides a visual human-machine operation interface, which is convenient for users to operate and debug. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0070] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A cigarette detection device based on machine vision technology, characterized in that: include: A tobacco cut image acquisition module, the tobacco cut image acquisition module is used to acquire image information of the tobacco cut end of the cigarette; A filter tip image acquisition module, the filter tip image acquisition module is used to acquire image information of the filter tip end of the cigarette; a first visual processor, the tobacco image acquisition module being electrically connected to the first visual processor, and the first visual processor being used to obtain the tobacco end image information acquired by the tobacco image acquisition module, and to analyze and judge the acquired tobacco end image information; a second visual processor, the filter tip image acquisition module being electrically connected to the second visual processor, the second visual processor being used to acquire the filter tip end image information acquired by the filter tip image acquisition module, and to analyze and judge the acquired filter tip end image information; Human-machine interface, the first visual processor and the second visual processor are connected to the human-machine interface via an Ethernet switch.

2. The cigarette detection device based on machine vision technology according to claim 1, characterized in that: The tobacco image acquisition module includes a first shell, a first optical lens and a first industrial camera, wherein a first transparent window is provided on the first shell, a plane mirror is provided on an inner side wall of the first shell, and the plane mirror and the first transparent window form a certain angle so that the cigarette can be imaged in the plane mirror through the first transparent window, the first industrial camera is arranged inside the first shell, the first industrial camera is used to obtain image information of the tobacco end of the cigarette in the plane mirror, and the first optical lens is connected to the first industrial camera.

3. The cigarette detection device based on machine vision technology according to claim 2, characterized in that: The first industrial camera is fixed inside the first shell through a first camera bracket.

4. The cigarette detection device based on machine vision technology according to claim 2, characterized in that: It also includes a first LED light source, which is arranged inside the first shell.

5. The cigarette detection device based on machine vision technology according to claim 1, characterized in that: The filter image acquisition module includes a second shell, a second industrial camera and a second optical lens, wherein the second shell is provided with a second transparent window, the second industrial camera is arranged inside the second shell, and the shooting direction of the second industrial camera is perpendicular to the second transparent window, and the second optical lens is connected to the second industrial camera.

6. The cigarette detection device based on machine vision technology according to claim 5, characterized in that: A second camera bracket is provided in the second shell, and the second industrial camera is fixed inside the second shell through the second camera bracket.

7. The cigarette detection device based on machine vision technology according to claim 5, characterized in that: A second LED light source is also disposed inside the second shell.

8. The cigarette detection device based on machine vision technology according to claim 1, characterized in that: It also includes a control box, and the first visual processor and the second visual processor are both arranged inside the control box.

9. The cigarette detection device based on machine vision technology according to claim 8, characterized in that: A cooling fan is arranged inside the control box.

10. The cigarette detection device based on machine vision technology according to claim 8, characterized in that: The Ethernet switch is also arranged in the control box.

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