Tobacco leaf image acquisition device

Abstract

The utility model discloses a tobacco leaf image acquisition device which comprises a first conveying mechanism and a second conveying mechanism, a turn-over mechanism is arranged at the joint of the first conveying mechanism and the second conveying mechanism, and image acquisition modules are arranged above the first conveying mechanism and the second conveying mechanism. And the first conveying mechanism, the second conveying mechanism, the turn-over mechanism and the image acquisition module are connected with a control module for controlling the cooperation thereof. The tobacco leaf grading device is simple in structure, convenient and efficient to operate, high in automation degree, capable of continuously collecting image features of two faces of tobacco leaves, high in collecting efficiency, time-saving and labor-saving in operation, capable of reducing large errors existing in tobacco leaf grading and capable of improving tobacco leaf grading efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tobacco leaf image acquisition device belongs to tobacco appearance collection and grading technical field. BACKGROUND

[0002] Tobacco appearance is the main basis of tobacco grading, and mainly includes color, shape, size, texture and identity of tobacco. At present, the judgment of tobacco appearance in the field of domestic tobacco grading mainly relies on the sense of professional and technical personnel, such as color, shape and size observed by eyes, and texture and identity mainly rely on hand feeling. The above judgment method depends on the personal experience of professional and technical personnel, and the judgment result is easy to have large deviation. With the development of machine vision and image processing technology, tobacco industry begins to explore the use of tobacco image to assist tobacco grading, that is, through collecting tobacco image, analyzing tobacco image characteristics, researching the relationship between image characteristics and tobacco grade, and finally realizing the auxiliary tobacco grading through tobacco image.

[0003] The inventor has found through retrieval that the prior art such as a tobacco leaf image acquisition device for tobacco grading disclosed in Chinese patent (CN204993668U) comprises a base, a motor, an acquisition plate and an image sensor, and can realize continuous acquisition of multiple tobacco leaf images when acquiring tobacco leaf images.

[0004] However, this kind of tobacco image acquisition method has defects, because although tobacco is very thin, there are still differences in color, shape, size and texture on the two surfaces of tobacco. The existing device can only acquire one surface of tobacco, so it is impossible to analyze the characteristics of tobacco image completely, resulting in large error in tobacco grading. At the same time, there are some impurities and dust on the surface of collected tobacco, which will interfere with the analysis of tobacco image characteristics by the device. UTILITY MODEL CONTENT

[0005] Therefore, the utility model aims to provide a tobacco leaf image acquisition device to at least solve the problems mentioned in the background art.

[0006] The utility model aims to realize the following technical scheme:

[0007] A tobacco leaf image acquisition device, comprising a first conveying mechanism and a second conveying mechanism, a turnover mechanism is arranged at the joint of the first conveying mechanism and the second conveying mechanism, and an image acquisition module is arranged above the first conveying mechanism and the second conveying mechanism.

[0008] Further, the turning mechanism comprises a turning structure for turning the upper and lower surfaces of the tobacco leaves and a rotating mechanism for driving the turning structure to rotate, and the rotating mechanism is connected with the stepping motor; the first conveying mechanism is slightly higher than the turning mechanism, and the turning mechanism is slightly higher than the second conveying mechanism.

[0009] Further, the turning structure is an L-shaped structure, and the long side of the L-shaped structure is connected with the first conveying mechanism and is arranged obliquely downward.

[0010] Further, the first conveying mechanism and the second conveying mechanism are both conveying belt machines; the conveying belt machine comprises a conveying roller, a roller support, a conveying belt, a speed changer and a driving motor, the conveying roller is installed on the frame through the roller support, the conveying belt is arranged on the conveying roller, the driving motor is arranged at the end of the frame and is connected with the driving end of the conveying roller through the speed changer.

[0011] Further, at least one avoiding groove is arranged on the conveying belt of the conveying belt machine along the length direction of the conveying belt, the turning structure is composed of a plurality of strip-shaped plates which are combined into an L-shaped structure and are adapted to the avoiding groove, and the strip-shaped plates are partially extended into the avoiding groove.

[0012] Further, the image acquisition module comprises a support, an industrial camera, an illuminating lamp and an infrared position detector, the support is a gantry arranged on the frame, the industrial camera is arranged above the conveying belt and at the middle position of the top of the gantry, the illuminating lamp is arranged on both sides of the industrial camera, and the infrared position detector is arranged on one side of the top of the support.

[0013] Further, the control module comprises a controller box, and a display, control buttons, an alarm and a power interface are arranged on the controller box; the display, the control buttons, the alarm, the power interface, the first conveying mechanism, the second conveying mechanism, the turning mechanism and the image acquisition module are electrically connected with a processor in the controller box.

[0014] Further, the dust extraction device is arranged on the first conveying mechanism and the second conveying mechanism, or a pretreatment conveying mechanism is arranged in front of the first conveying mechanism and the second conveying mechanism, and the dust extraction device is arranged on the pretreatment conveying mechanism.

[0015] Further, the dust extraction device comprises a dust extraction box and a dust extraction fan, the dust extraction box is arranged on the bottom surface of the conveying belt, a plurality of ventilation holes are arranged on the top surface of the dust extraction box, and the air inlet of the dust extraction fan is connected with the dust extraction box; a plurality of dust extraction holes are arranged on the conveying belt.

[0016] Further, a flexible air-permeable layer is arranged on the top surface of the dust extraction box and is attached to the bottom surface of the conveying belt, and the flexible air-permeable layer is a sponge layer or a brush.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] The utility model discloses simple structure, convenient and efficient operation, high degree of automation can continuously put the tobacco leaf of waiting for inquiring on the first conveying mechanism, is conveyed to the image acquisition module below the upper portion of first conveying mechanism and carries out image acquisition, after gathering, is conveyed to the turnover mechanism and turns over, and then is conveyed to the second conveying mechanism again and carries out image acquisition. The device can continuously gather the image feature of two sides of tobacco leaf, and the gathering efficiency is high, and the operation saves time and effort. Dust removal device can remove the impurity and dust on the surface of tobacco leaf in the conveying process, avoids the interference and influence of its to the device analysis tobacco leaf image feature, reduces the big error of tobacco leaf grading, improves tobacco leaf grading efficiency.

[0019] The objects and other advantages of the present utility model will be described in the following specification to some extent, and to some extent, it will be obvious to those skilled in the art based on the study of the following or can be taught from the practice of the present utility model. The objects and other advantages of the present utility model can be realized and obtained by the following specification. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the utility model will be described in further detail below combined with the drawings, wherein:

[0021] Figure 1 It is the front structure schematic of the utility model Figure 1 ;

[0022] Figure 2 It is the front structure schematic of the utility model Figure 2 ;

[0023] Figure 3 It is the top structure schematic of the utility model;

[0024] Figure 4 It is the side structure schematic of the utility model;

[0025] Figure 5 It is the structure block diagram of control module.

[0026] In the figure: 1, the first conveying mechanism; 1-1, conveying roller; 1-2 roller frame; 1-3, conveying belt; 1-4, transmission; 1-5 drive motor; 1-6, rack; 1-7, avoiding groove; 1-8, dust extraction hole; 2, the second conveying mechanism; 3, image acquisition module; 3-1, support; 3-2 industrial camera; 3-3, illuminating lamp; 3-4, infrared positioner; 4, the turnover mechanism; 4-1, turnover structure; 4-2, rotating mechanism; 4-3, stepping motor; 5, control module; 5-1, controller box, 5-2, display; 5-3, processor; 5-4, control button; 5-5, alarm; 5-6, power interface; 6, dust extraction device; 6-1, dust extraction box; 6-2, dust extraction fan; 7, groove; 8, flexible air-permeable layer. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] In the prior art in the embodiment, the following problems exist: the inventor has found through retrieval that the tobacco leaf image acquisition device disclosed in the prior art such as Chinese patent (CN204993668U) has defects, the existing device can only acquire one face of the tobacco leaf, so that the image characteristics of the tobacco leaf cannot be completely analyzed, thereby leading to a large error in tobacco leaf grading, and some impurities and dust on the surface of the collected tobacco leaf can interfere with the analysis of the image characteristics of the tobacco leaf by the device.

[0029] As shown in Figures 1-5 The first embodiment of the utility model provides a tobacco leaf image acquisition device, which comprises a first conveying mechanism 1 and a second conveying mechanism 2, a turnover mechanism 4 is arranged at the joint of the first conveying mechanism 1 and the second conveying mechanism 2, and an image acquisition module 3 is arranged above the first conveying mechanism 1 and the second conveying mechanism 2, and the first conveying mechanism 1, the second conveying mechanism 2, the turnover mechanism 4 and the image acquisition module 3 are connected with a control module 5 that controls cooperation thereof.

[0030] The first conveying mechanism 1 and the second conveying mechanism 2 are both conveying belt machines. The conveying belt machine comprises a conveying roller 1-1, a roller support 1-2, a conveying belt 1-3, a speed changer 1-4, and a driving motor 1-5. The conveying roller 1-1 is installed on a machine frame 1-6 through the roller support 1-2. The conveying belt 1-3 is installed on the conveying roller 1-1. The driving motor 1-5 is arranged at the end of the machine frame 1-6 and connected with the driving end of the conveying roller 1-1 through the speed changer 1-4. The structure can drive the conveying roller 1-1 by the driving motor 1-5 to drive the conveying belt 1-3 to automatically transport the tobacco leaves.

[0031] The turning mechanism 4 comprises a turning structure 4-1 for turning the upper and lower surfaces of the tobacco leaves and a rotating mechanism 4-2 for driving the turning structure 4-1 to rotate. The rotating mechanism 4-2 is connected with a stepping motor 4-3. The first conveying mechanism 1 is slightly higher than the turning mechanism 4, and the turning mechanism 4 is slightly higher than the second conveying mechanism 2. The rotating mechanism 4-2 is a gear rotating mechanism. The rotating mechanism 4-2 is connected with the stepping motor 4-3. Starting the stepping motor 4-3 can drive the gears in the rotating mechanism 4-2 to rotate. The forward rotation of the stepping motor 4-3 drives the turning structure 4-1 to rotate and turn the tobacco leaves. The reverse rotation of the stepping motor 4-3 makes the turning structure 4-1 return to the original position. Alternatively, the stepping motor 4-3 can drive the rotating mechanism 4-2 to rotate 360 degrees to turn the tobacco leaves.

[0032] The turning structure 4-1 is an L-shaped structure. The long side of the L-shaped structure is connected with the first conveying mechanism 1 and arranged obliquely downward. The angle between the long side of the L-shaped structure and the horizontal plane of the first conveying mechanism 1 is 40º-50º.

[0033] Preferably, the conveying belt 1-3 is provided with at least one avoiding groove 1-7 along the length direction thereof. The turning structure 4-1 is an L-shaped structure composed of a plurality of strip-shaped plates matched with the avoiding groove 1-7, and part of the strip-shaped plates extends into the avoiding groove 1-7. Since the tobacco leaves are soft, the structure can better transport the tobacco leaves onto the strip-shaped plates and then turn the tobacco leaves. The structure can turn the tobacco leaves without damaging the tobacco leaves. During the rotation of the rotating mechanism 4-2, a certain centrifugal force is generated to make the tobacco leaves rotate synchronously with the strip-shaped plates to realize the turning of the tobacco leaves.

[0034] The image acquisition module 3 comprises a support 3-1, an industrial camera 3-2, illuminating lamps 3-3, and an infrared position detector 3-4. The support 3-1 is a gantry frame installed on the machine frame 1-6. The industrial camera 3-2 is installed above the conveying belt 1-3 and at the middle position of the top of the gantry frame. The illuminating lamps 3-3 are installed on both sides of the industrial camera 3-2. The infrared position detector 3-4 is installed on one side of the top of the gantry frame. The device can acquire the images of the front and back surfaces of the tobacco leaves through the industrial camera 3-2 under the illumination of the illuminating lamps 3-3. The infrared position detector 3-4 on one side of the top of the support 3-1 can monitor the position of the tobacco leaves on the conveying belt 1-3 to ensure that the tobacco leaves can be conveyed to the position directly below the industrial camera 3-2.

[0035] The control module 5 comprises a controller box 5-1, a display 5-2, control buttons 5-4, an alarm 5-5 and a power interface 5-6 on the controller box 5-1, the display 5-2, the control buttons 5-4, the alarm 5-5, the power interface 5-6, the first conveying mechanism 1, the second conveying mechanism 2, the turnover mechanism 4 and the image acquisition module 3 are in electrical connection with a processor 5-3 arranged in the controller box 5-1, and the power interface 5-6 can be connected to a power supply to provide power for the processor 5-3, the display 5-2, the control buttons 5-4, the alarm 5-5, the power interface 5-6, the first conveying mechanism 1, the second conveying mechanism 2, the turnover mechanism 4 and the image acquisition module 3. The controller box 5-1 can be installed on the rack 1-6 or any place close to the external power supply.

[0036] As shown in Figures 1-5 On the basis of the first embodiment, the second embodiment of the utility model provides a tobacco leaf image acquisition device, further comprising a dust extraction device 6 which can remove impurities and dust on the surface of the tobacco leaf, the dust extraction device 6 can be arranged on the first conveying mechanism 1 and the second conveying mechanism 2, or a pretreatment conveying mechanism is arranged in front of the first conveying mechanism 1 and the second conveying mechanism 2, the arrangement structure of the pretreatment conveying mechanism is same with the first conveying mechanism 1, the turnover mechanism 4 and the second conveying mechanism 2, the dust extraction device 6 is arranged on the pretreatment conveying mechanism, and the impurities and dust on the front and back surfaces of the tobacco leaf are removed first and then sent to the first conveying mechanism 1 and the second conveying mechanism 2 in sequence for photographing.

[0037] The dust extraction device 6 comprises a dust extraction box 6-1 and a dust extraction fan 6-2, the dust extraction box 6-1 is arranged on the bottom surface of the conveying belt 1-3, and a plurality of ventilation holes are arranged on the top surface of the dust extraction box 6-1, and the air inlet of the dust extraction fan 6-2 is connected with the dust extraction box 6-1; a plurality of dust extraction holes 1-8 are arranged on the conveying belt 1-3, and the impurities and dust on the surface of the tobacco leaf can be extracted through the dust extraction holes 1-8 on the conveying belt 1-3 above the dust extraction box 6-1 during the conveying process of the tobacco leaf on the conveying belt 1-3, so that the interference of the impurities and dust on the surface of the tobacco leaf on the analysis of the image features of the tobacco leaf by the device is avoided, and the tobacco leaf grading efficiency is improved. A groove 7 for installing the dust extraction box 6-1 is arranged in the middle of the conveying roller 1-1, the dust extraction box 6-1 can be buckled on the groove 7 in the middle of the conveying roller 1-1 and connected with the air inlet of the dust extraction fan 6-2 through a pipeline, and the dust extraction fan 6-2 is installed on the rack 1-6. Preferably, a flexible air-permeable layer 8 is arranged on the top surface of the dust extraction box 6-1 and attached to the bottom surface of the conveying belt 1-3, and the flexible air-permeable layer 8 not only can make the wind power more concentrated and the dust extraction effect better, but also can have a certain filtering effect, which is convenient for subsequent cleaning and maintenance. The flexible air-permeable layer 8 can be a sponge layer or a brush. The flexible air-permeable layer 8 can be detachably connected with the top surface of the dust extraction box 6-1 through buckling, bonding or bolt connection.

[0038] The working principle of the utility model is:

[0039] Step 1.1, continuously place the to-be-inspected tobacco leaves on the first conveying mechanism 1, and place the tobacco leaves transversely relative to the conveying direction to facilitate subsequent turning, and the tobacco leaves are conveyed to the industrial camera below the first conveying mechanism 1 for image acquisition, and the industrial camera is illuminated by the illuminating lamp during the acquisition process;

[0040] Step 1.2, after the acquisition is completed, the tobacco leaves are conveyed to the turning mechanism 4 for turning, and when the tobacco leaves are turned, the tobacco leaves are sent to the L-shaped turning structure 4-1 by the conveying belt 1-3, the stepping motor 4-3 drives the rotating mechanism 4-2 to rotate, the stepping motor 4-3 drives the turning structure 4-1 to rotate and turn, and the stepping motor 4-3 reverses to make the turning structure 4-1 reset; or the stepping motor 4-3 can drive the rotating mechanism 4-2 to rotate 360 degrees to realize the turning of the tobacco leaves, and when the tobacco leaves are turned, the tobacco leaves are conveyed to the long side of the L shape, and the short side of the L shape takes the tobacco leaf limiting action, and the rotating mechanism 4-2 rotates under the action of centrifugal force to make the tobacco leaves adhere to the long side of the L shape and rotate to realize the turning;

[0041] Step 1.3, after the turning is completed, the tobacco leaves are placed on the second conveying mechanism 2, and the work of step 1.1 is repeated to acquire the image;

[0042] In the tobacco conveying process, the dust removal device 6 can remove the impurities and dust on the surface of the tobacco leaves, and then the image acquisition is performed, thereby avoiding the interference of the impurities and dust on the image feature analysis of the device.

[0043] The effect is that: the device has high automation degree, and does not need to identify and grade the tobacco leaves by artificial, can continuously acquire the image features of two surfaces of the tobacco leaves, reduces the large error existing in the tobacco grading, and simultaneously removes the impurities and dust on the surface of the tobacco leaves by the dust removal device 6 in the conveying process, avoids the interference of the impurities and dust on the image feature analysis of the device, and improves the tobacco grading efficiency.

[0044] The above is only a preferred embodiment of the utility model, and does not make any form of confidential limit to the utility model, and any simple modification, equivalent change and modification of the above embodiment without departing from the technical solution content of the utility model, according to the technical essence of the utility model, all still belong to the range of the technical solution of the utility model.

Claims

1. A tobacco leaf image acquisition device, characterized by, The application relates to a tobacco leaf image acquisition device, which comprises a first conveying mechanism (1) and a second conveying mechanism (2), a turnover mechanism (4) is arranged at the joint of the first conveying mechanism (1) and the second conveying mechanism (2), and an image acquisition module (3) is arranged above the first conveying mechanism (1) and the second conveying mechanism (2).

2. The tobacco leaf image acquisition device of claim 1, wherein, The turnover mechanism (4) comprises a turnover structure (4-1) for turning over the upper and lower surfaces of tobacco leaves and a rotating mechanism (4-2) for driving the turnover structure (4-1) to rotate, the rotating mechanism (4-2) is connected with a stepping motor (4-3); the first conveying mechanism (1) is slightly higher than the turnover mechanism (4), and the turnover mechanism (4) is slightly higher than the second conveying mechanism (2).

3. The tobacco leaf image acquisition apparatus of claim 2, wherein, The turnover structure (4-1) is an L-shaped structure, the long side of the L-shaped structure is connected with the first conveying mechanism (1) and is arranged to be inclined downward.

4. The tobacco leaf image acquisition apparatus of claim 3, wherein, The first conveying mechanism (1) and the second conveying mechanism (2) are both conveying belt machines; the conveying belt machine comprises a conveying roller (1-1), a roller support (1-2), a conveying belt (1-3), a speed changer (1-4) and a driving motor (1-5), the conveying roller (1-1) is installed on a machine frame (1-6) through the roller support (1-2), the conveying belt (1-3) is arranged on the conveying roller (1-1), the driving motor (1-5) is arranged at the end of the machine frame (1-6) and is connected with the driving end of the conveying roller (1-1) through the speed changer (1-4).

5. The tobacco leaf image acquisition device of claim 4, wherein, At least one avoiding groove (1-7) is arranged on the conveying belt (1-3) of the conveying belt machine along the length direction of the conveying belt (1-3), the turnover structure (4-1) is composed of a plurality of strip-shaped plates which are combined into an L-shaped structure and are matched with the avoiding groove (1-7), and part of the strip-shaped plates extends into the avoiding groove (1-7).

6. The tobacco leaf image acquisition device of claim 4, wherein, The image acquisition module (3) comprises a support (3-1), an industrial camera (3-2), an illuminating lamp (3-3) and an infrared position detector (3-4), the support (3-1) is a gantry arranged on the machine frame (1-6), the industrial camera (3-2) is arranged above the conveying belt (1-3) and at the middle position of the top of the gantry, the illuminating lamp (3-3) is arranged on both sides of the industrial camera (3-2), and the infrared position detector (3-4) is arranged on one side of the top of the gantry.

7. The tobacco leaf image acquisition device of claim 1, wherein, The control module (5) comprises a controller box body (5-1), a display (5-2), a control button (5-4), an alarm (5-5) and a power supply interface (5-6) are arranged on the controller box body (5-1), the display (5-2), the control button (5-4), the alarm (5-5), the power supply interface (5-6), the first conveying mechanism (1), the second conveying mechanism (2), the turnover mechanism (4) and the image acquisition module (3) are electrically connected with a processor (5-3) in the controller box body (5-1).

8. The tobacco leaf image acquisition apparatus of any of claims 4-7, wherein, Also include the dust extraction device (6) for removing the surface impurities and dust of tobacco leaves, the dust extraction device (6) is arranged on the first conveying mechanism (1), the second conveying mechanism (2), or a pretreatment conveying mechanism is arranged in front of the first conveying mechanism (1), the second conveying mechanism (2), and the dust extraction device (6) is arranged on the pretreatment conveying mechanism.

9. The tobacco leaf image acquisition device of claim 8, wherein, The dust extraction device (6) includes a dust extraction box (6-1) and a dust extraction fan (6-2), the dust extraction box (6-1) is arranged on the bottom surface of the conveying belt (1-3), and a plurality of ventilation holes are arranged on the top surface of the dust extraction box (6-1), and the air inlet of the dust extraction fan (6-2) is connected with the dust extraction box (6-1); a plurality of dust extraction holes (1-8) are arranged on the conveying belt (1-3).

10. The tobacco leaf image acquisition device of claim 9, wherein, The top surface of the dust extraction box (6-1) is provided with a flexible air-permeable layer (8), and the flexible air-permeable layer (8) is attached to the bottom surface of the conveying belt (1-3), and the flexible air-permeable layer (8) is a sponge layer or a brush.

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