Seed potato dicing, arraying and visual intelligent sorting device and control method thereof

Abstract

The invention discloses a potato seed dicing, arraying and visual intelligent sorting device and a control method thereof, and relates to the technical field of agricultural mechanical equipment, the potato seed dicing, arraying and visual intelligent sorting device comprises a rack, a conveyor, a feeding mechanism, a dicing adjusting mechanism and a dicing turnover mechanism, the rack is fixedly connected with a seed box, the conveyor is fixedly installed on the outer wall of the rack, and the feeding mechanism is fixedly installed on the rack; the feeding mechanism is arranged in the seed box and used for feeding diced potatoes to the conveyor, the dicing adjusting mechanism is arranged on the conveyor and used for controlling the distance between the diced potatoes, and the dicing overturning mechanism is arranged on the conveyor and used for arranging the diced potatoes in order. By means of the arrangement mode that the feeding mechanism, the dicing adjusting mechanism and the dicing overturning mechanism are matched, the detection accuracy and efficiency are improved, manual intervention is reduced, the labor intensity and cost are reduced, meanwhile, the large-scale potato dicing detection requirement can be met, and powerful support is provided for development of the potato planting industry.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery and equipment, and particularly relates to a potato seed tuber cutting and aligning and visual intelligent sorting device and a control method thereof. Background Art

[0002] Potato is one of the important food and cash crops, and its reproduction often adopts tuber reproduction, that is, using potato seed tubers for sowing and cultivation. In actual production, in order to improve the utilization rate of seed tubers and save planting costs, farmers usually cut larger seed tubers into multiple small pieces, called potato seed tuber cuttings, and then sow them. Each potato seed tuber cutting usually requires at least one strong bud eye to ensure that it can germinate and form a plant after sowing.

[0003] In order to improve the efficiency and quality of potato cutting, in recent years, some mechanized or automated cutting devices have emerged, using fixed blades or rotary blades to equally divide the seed tubers. It can improve the cutting speed to a certain extent and combine image recognition technology to detect the size and bud eye position of the potatoes, so as to adjust the cutting plan and avoid cutting off the bud eyes.

[0004] However, these existing technical solutions still have deficiencies: most of the existing cutting machines lack further processing of the cuttings after cutting the seed tubers. Usually, all the cuttings are mixed and output through a conveyor belt. It is impossible to ensure that each piece is face-down and the detection surface is face-up on the conveyor belt, so that the image recognition technology cannot detect each cutting well, and manual assistance is still required to remove the unqualified cuttings, which is rather inconvenient. Summary of the Invention

[0005] The purpose of the present invention is to provide a potato seed tuber cutting and aligning and visual intelligent sorting device and a control method thereof to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A potato seed tuber cutting and aligning and visual intelligent sorting device, comprising: A frame, on which a seed box is fixedly connected; A conveyor, which is fixedly installed on the outer wall of the frame; A feeding mechanism, which is arranged inside the seed box and used for feeding the cut potatoes onto the conveyor; A cutting adjustment mechanism, which is arranged on the conveyor and used for controlling the spacing of the cut potatoes; A cutting turning mechanism, which is arranged on the conveyor and used for regularizing the cut potatoes.

[0007] Preferably, it further includes: The screening mechanism is arranged on the conveyor and is used for screening unqualified cut potatoes.

[0008] Preferably, the feeding mechanism comprises: A fixed plate, the fixed plate is fixedly connected to the inside of the seed box at equal intervals, and the fixed plate is in a stepped shape; A movable plate, the movable plate is equidistantly slidably arranged inside the seed box, and the movable plate and the fixed plate are staggered and arranged in a stepped shape; A lifting assembly, which is arranged inside the frame and is used to drive the moving plate to move; A pushing assembly is arranged at the top of the seed box and is used for pushing the cut potatoes.

[0009] Preferably, the lifting assembly comprises: A pneumatic push rod, wherein the pneumatic push rod is fixedly installed inside the frame; The lifting plate, the output end of the pneumatic push rod is transmission-connected with the lifting plate, the moving plate is fixedly connected to the top of the lifting plate at equal distances, and the cross section of the lifting plate is Z-shaped.

[0010] Preferably, the pusher assembly comprises: A pneumatic push frame, wherein the pneumatic push frame is slidably arranged on the top of the seed box; A push plate is fixedly connected to the pneumatic push frame at equal distances and is used to push materials.

[0011] Preferably, the cutting adjustment mechanism comprises: A first infrared proximity sensor and a second infrared proximity sensor, wherein the first infrared proximity sensor and the second infrared proximity sensor are fixedly mounted on the conveyor and are used to detect the distance between the cut potatoes; a first pneumatic injection member, the first pneumatic injection member is fixedly mounted on the conveyor, and the first pneumatic injection member is arranged between the first infrared proximity sensor and the second infrared proximity sensor; A return channel is connected between the conveyor and the seed box and is used to recycle excess cut potatoes to the seed box.

[0012] Preferably, the cutting and flipping mechanism comprises: A fixed plate, the fixed plate is symmetrically fixedly connected to the conveyor; A fixing rod, the end of which is fixedly connected to the fixing plate; The swing plate is equidistantly rotatably arranged on the fixed rod.

[0013] Preferably, the screening mechanism comprises: A light shielding box body, wherein the light shielding box body is fixedly installed on the top of the conveyor; An industrial camera, which is symmetrically and fixedly installed on both sides of a light-shielding box body, and the industrial camera is connected to an external industrial control computer; A light source, which is symmetrically and fixedly installed on both sides of the light-shielding box body and is used to provide brightness inside the light-shielding box body; A second pneumatic ejector, which is fixedly installed on a conveyor and is located inside the light-shielding box body, and is used to blow off unqualified cut potatoes.

[0014] Preferably, the actuators and sensors in the conveyor, the feeding mechanism, the cutting adjustment mechanism, the cutting flipping mechanism, and the screening mechanism are centrally controlled and coordinated by a programmable logic controller.

[0015] The present invention also provides a control method for a potato seed tuber cutting and alignment and visual intelligent sorting device, including the following specific use steps: Step 1: After entering the working cycle, the programmable logic controller starts the motor of the conveyor belt and starts to drive the movable plate to lift and lower through the lifting assembly to feed the cut pieces inside the seed box. While feeding, it controls the start of the pushing frame to drive multiple push plates to push the cut pieces to the top of the fixed plate or onto the conveyor belt, and the conveyor belt runs at a set speed uniformly to convey the cut pieces to the next station; Step 2: The programmable logic controller monitors the spacing of the cut pieces on the conveyor belt through the first infrared proximity sensor and the second infrared proximity sensor. If it detects that the distance between two cut pieces is too close, it triggers the first pneumatic ejector to blow air for rejection adjustment; Step 3: When the cut piece passes by the swing plate, if the cut piece has the arc surface facing down, it will flip under the extrusion, friction, and obstruction of the swing plate, so that the cut surface faces down. If the cut surface faces down, it will pass by the swing plate normally, so that the cut pieces are uniformly with the arc surface facing up and continue to be conveyed to the next station; Step 4: The cut piece continues to move forward into the field of view of the industrial camera, and after reaching the region of interest, a frame is intercepted for post-processing; Step 5: The industrial camera image is processed by the YOLO algorithm running on the industrial control computer to detect the bud eyes and cut piece features; Step 6: Generate a quality determination result and send it back to the programmable logic controller; Step 7: According to the received signal, if the result is unqualified, the programmable logic controller immediately triggers the second pneumatic ejector to blow air and removes the cut piece from the conveyor belt. If the result is qualified, no rejection action is taken, and the cut piece is allowed to naturally fall into the qualified product collection container.

[0016] The technical effects and advantages of the present invention: The present invention utilizes the setting method of cooperating with a feeding mechanism, a cutting block adjusting mechanism, and a cutting block flipping mechanism, enabling the intermittent feeding of cut potatoes to a conveyor through the feeding mechanism. The cutting block adjusting mechanism can ensure that each cut block has sufficient independent space when entering the subsequent flipping and camera detection processes, preventing the flipping effect from being affected or multiple cut blocks appearing in the same camera frame due to overcrowded cut blocks. The cutting block flipping mechanism cooperates with the conveyor belt to provide a forward driving force, while the cutting block flipping mechanism exerts a frictional and obstructive effect on the cut blocks, prompting the cut blocks with the arc surface facing down to flip around their own support points until they finally reach a stable state with the arc surface facing up and the cut surface fitting the conveyor belt. When cut blocks that are already in the ideal posture with the arc surface facing up pass by, due to the cut surface facing down, the frictional force is large and they will not easily flip, and can directly push the cut blocks to squeeze past the flipping mechanism and move forward, thereby improving the accuracy and efficiency of detection, reducing manual intervention, and also reducing labor intensity and costs. At the same time, it can meet the large-scale detection requirements of potato cut blocks, providing strong support for the development of the potato planting industry; The present invention utilizes the setting method of cooperating with a first infrared proximity sensor, a second infrared proximity sensor, a first pneumatic injection part, and a return channel, which can effectively prevent the cut blocks from sticking too close on the conveyor belt, causing misjudgment and interference to the cutting block flipping mechanism or the screening mechanism, and also avoiding the situation of blockage caused by the accumulation of multiple cut blocks; The present invention utilizes the setting method of cooperating with a light-shielding box body, an industrial camera, a light source, and a second pneumatic injection part, providing a stable light environment to ensure accurate imaging. The industrial camera clearly captures details to provide a basis for screening. The light source can be adjusted to ensure good imaging and obvious features. The second pneumatic injection part realizes an automated screening process, improving the screening efficiency and accuracy, reducing manual errors and labor intensity. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the internal structure of the side at the feeding mechanism of the present invention.

[0019] Figure 3 It is a schematic diagram of the structure at the cutting block adjusting mechanism of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure at the cutting block flipping mechanism of the present invention.

[0021] Figure 5 It is a schematic diagram of the structure at the screening mechanism of the present invention.

[0022] Figure 6 It is a schematic top view of the structure at the screening mechanism of the present invention.

[0023] Figure 7Schematic flow diagram of the control method of the present invention.

[0024] In the figure: 1, frame; 2, seed box; 3, conveyor; 4, feeding mechanism; 41, fixed plate; 42, moving plate; 43, lifting assembly; 431, pneumatic push rod; 432, lifting plate; 44, pushing component; 441, pneumatic push frame; 442, pushing plate; 5, cutting block adjusting mechanism; 51, first infrared proximity sensor; 52, second infrared proximity sensor; 53, first pneumatic spraying part; 54, return material channel; 6, cutting block flipping mechanism; 61, fixed plate; 62, fixed rod; 63, swinging plate; 7, screening mechanism; 71, light-shielding box body; 72, industrial camera; 73, light source; 74, second pneumatic spraying part. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] The present invention provides a Figures 1-7 potato seed tuber cutting and aligning and visual intelligent sorting device as shown in the figure, including a frame 1, a conveyor 3, a feeding mechanism 4, a cutting block adjusting mechanism 5, a cutting block flipping mechanism 6 and a screening mechanism 7. A seed box 2 is fixedly connected to the frame 1. The conveyor 3 is fixedly installed on the outer wall of the frame 1. The feeding mechanism 4 is arranged inside the seed box 2 and is used to feed the cut potatoes onto the conveyor 3. The cutting block flipping mechanism 6 is arranged on the conveyor 3 and is used to regularize the cut potatoes so that the detection surfaces of the cut potatoes can all be kept facing upwards, facilitating subsequent detection and screening by the screening mechanism 7. The cutting block adjusting mechanism 5 is arranged on the conveyor 3 and is used to control the spacing of the cut potatoes and adjust the spacing between the cut potatoes conveyed on the conveyor 3, which can effectively prevent the cut potatoes from sticking too close on the conveyor belt, resulting in misjudgment and interference of the cutting block flipping mechanism 6 or the screening mechanism 7, and also avoid the situation of multiple cut potatoes piling up and causing blockage. The screening mechanism 7 is arranged on the conveyor 3 and is used to screen out unqualified cut potatoes.

[0027] Specifically, the feeding mechanism 4 includes a fixed plate 41, a movable plate 42, a lifting assembly 43 and a pushing assembly 44. The fixed plate 41 is equidistantly fixedly connected to the inside of the seed box 2, the fixed plate 41 is stepped, the movable plate 42 is equidistantly slidably arranged inside the seed box 2, the movable plate 42 and the fixed plate 41 are staggered and stepped, the lifting assembly 43 is arranged inside the frame 1, and is used to drive the movable plate 42 to move, the pushing assembly 44 is arranged at the top of the seed box 2, and is used to push the cut potatoes, and an electromagnetic proximity sensor is arranged on the pushing assembly 44. The electromagnetic proximity sensor determines when to push the processing by sensing the position change of the movable plate 42. When the movable plate 42 moves to a specific position, the electromagnetic proximity sensor detects the corresponding signal change, and the pushing assembly 44 starts to start the pushing action. The lifting assembly 43 includes Pneumatic push rod 431, lifting plate 432, pneumatic push rod 431 is fixedly installed inside the frame 1, the output end of pneumatic push rod 431 is transmission connected with lifting plate 432, moving plate 42 is equidistantly fixedly connected to the top of lifting plate 432, the cross section of lifting plate 432 is Z-shaped, pushing assembly 44 includes pneumatic push frame 441 and push plate 442, pneumatic push frame 441 is slidably set on the top of seed box 2, push plate 442 is equidistantly fixedly connected to pneumatic push frame 441, used to push materials, fixed plate 41 and moving plate 42 are made of iron with stainless steel surface, have enough strength and rigidity to support several potato cut pieces, fixed plate 41 and moving plate 42 are distributed in the vertical direction, form a step-like arrangement structure, pneumatic push rod 431 makes each level of moving plate 42 do up and down reciprocating motion synchronously, such as Figure 2The three moving plates 42 shown are rigidly connected. In the initial state, the lowermost moving plate 42 is located at the bottom of the seed box 2, and several potato cut pieces are stacked above it. When the feeding process is started, the three moving plates 42 rise synchronously. The bottom moving plate 42 pushes up the cut pieces on it to reach the height of the matching fixed plate 41 in the middle, and at the same time, the cut pieces will slide onto the fixed plate 41 at this position. Then, the three moving plates 42 descend and reset. At this time, the cut pieces on the fixed plate 41 will continue to slide onto the middle moving plate 42. In the next upward movement of the middle moving plate 42, the cut pieces it supports will be further pushed to reach the position of the uppermost fixed plate 41. Similarly, the upper moving plate 42 receives the cut pieces from the lower fixed plate 41 in the next downward movement, and then rises to lift a row of cut pieces to the height of the conveyor belt of the conveyor 3. Through such a way of alternating lifting and lowering of the multi-level moving plates 42 and fixed plates 41, the step-by-step picking and lifting of the scattered cut pieces in the seed box 2 are realized. Since only a small number of cut pieces are allowed to enter each level of the moving plates 42 each time, the excess cut pieces will fall back to the lower layer during the upward movement of the moving plates 42. Therefore, usually only a small number of cut pieces arranged in a row can reach the outlet of the uppermost moving plate 42. And at the top of each level of the fixed plate 41 and the position finally connected to the conveyor belt, a pushing component 44 is installed. The pushing component 44 includes three pneumatic push frames 441 and a push plate 442. The pneumatic push frames 441 are usually controlled by a short-stroke cylinder or a servo motor and an inductive proximity sensor arranged at the top of the fixed plate 41. When the moving plate 42 moves to the height of the top of the fixed plate 41, the inductive proximity sensor is triggered, and the PLC connected to the sensor controls the pneumatic push frames 441 and the push plate 442 to quickly push forward, pushing the cut pieces from the top of the moving plate 42 to the next-level fixed plate 41 or the conveyor 3. After the pushing is completed, the pneumatic push frames 441 and the push plate 442 immediately retract to their original positions and wait for the next batch of cut pieces to be ready. The above operations can sort and quantitatively output the potato cut pieces in the seed box 2 column by column, realizing the automatic feeding and alignment of the cut pieces. It avoids the situation where the cut pieces enter the conveyor belt side by side at the same time, creating good conditions for subsequent spacing control and visual inspection.

[0028] Specifically, the cutting block adjusting mechanism 5 includes a first infrared proximity sensor 51, a second infrared proximity sensor 52, a first pneumatic ejector 53 and a return material channel 54. The first infrared proximity sensor 51 and the second infrared proximity sensor 52 are fixedly installed on the conveyor 3 for detecting the spacing of the cut potatoes. The first pneumatic ejector 53 is fixedly installed on the conveyor 3. The first pneumatic ejector 53 is arranged between the first infrared proximity sensor 51 and the second infrared proximity sensor 52. The return material channel 54 is connected between the conveyor 3 and the seed box 2 for recycling the excess cut potatoes to the seed box 2. The first infrared proximity sensor 51 and the second infrared proximity sensor 52 preferably adopt opposed or diffuse reflection sensors. When an object approaches, the sensor is triggered. It is installed on the side of the conveyor belt of the conveyor 3, aiming at a certain position above the conveyor belt for detecting the cut potatoes passing through this position. The distance between the two sensors is optimized. When the first cut potato passes through the first infrared proximity sensor 51 upstream, this sensor is triggered. If the spacing between the first cut potato and the second cut potato is sufficient, then when the first cut potato triggers the second infrared proximity sensor 52 downstream, the first infrared proximity sensor 51 should be in an untriggered state. However, if the first infrared proximity sensor 51 upstream is also in a triggered state when the first cut potato triggers the second infrared proximity sensor 52 downstream, that is, the second cut potato has not completely left the detection range of the first infrared proximity sensor 51, it indicates that the spacing between the two cut potatoes is insufficient. At this moment, the PLC will control the first pneumatic ejector 53 to blow the latter cut potato into the return material channel 54, so that this cut potato returns to the seed box 2 again, effectively preventing the cut potatoes from sticking too close on the conveyor belt, resulting in misjudgment and interference of the subsequent cut potato flipping mechanism 6 or screening mechanism 7, and also avoiding the situation of multiple cut potatoes piling up and causing blockage. The cutting block adjusting mechanism 5 can ensure that each cut potato has sufficient independent space when entering the subsequent flipping and camera detection processes, and will not affect the flipping effect or cause multiple cut potatoes to appear in the same camera image due to overcrowding of the cut potatoes.

[0029] Specifically, the cut - piece flipping mechanism 6 includes a fixed plate 61, a fixed rod 62, and a swing plate 63. The fixed plate 61 is symmetrically and fixedly connected to the conveyor 3. The end of the fixed rod 62 is fixedly connected to the fixed plate 61. The swing plate 63 is rotatably arranged on the fixed rod 62 at equal intervals. When the cut - pieces enter the conveyor belt, their postures are random. Ideally, the cut - surface of the cut - piece faces downward and the arc - surface faces upward. This not only facilitates detection but also enables the cut - piece to stably adhere to the surface of the conveyor belt, ensuring the stability of the conveying process. However, some cut - pieces may enter the conveyor belt with the arc - surface facing downward and the cut - surface facing upward. At this time, their postures cause the detection surface to adhere to the conveyor belt, and subsequent bud - eye detection cannot be carried out. To adjust the postures of such cut - pieces, when the cut - piece contacts the swing plate 63, the conveyor belt provides a forward driving force, while the swing plate 63 exerts a frictional and obstructive effect on the cut - piece, prompting the cut - piece with the arc - surface facing downward to flip around its own support point and finally flip to a stable state with the arc - surface facing upward and the cut - surface adhering to the conveyor belt. When the cut - piece in the ideal posture with the arc - surface facing upward and the cut - surface adhering to the conveyor belt passes by, because the plane adheres to the conveyor belt, the frictional force is large and the structure is stable, it can directly push the swing plate 63 forward and pass through smoothly without being disturbed. Since the bud - eyes of potatoes generally grow on the epidermis of the tubers, after flipping, the situation where the bud - eyes are located at the bottom of the cut - piece facing downward and cannot be seen by the camera can be avoided, thereby improving the reliability of subsequent visual detection of bud - eyes. If some cut - pieces with the arc - surface facing downward fail to flip when passing through the swing plate 63, the present invention solves this problem by determining them as unqualified cut - pieces and excluding them in the visual detection link. Therefore, performing flipping treatment on each cut - piece can minimize the probability of bud - eyes being blocked to a great extent, which is of great help to the overall improvement of detection accuracy. There is no need for manual auxiliary flipping, reducing manual errors and labor intensity.

[0030] Specifically, the screening mechanism 7 includes a light-shielding box body 71, an industrial camera 72, a light source 73, and a second pneumatic ejector 74. The light-shielding box body 71 is fixedly installed at the top of the conveyor 3. The industrial cameras 72 are symmetrically and fixedly installed on both sides of the light-shielding box body 71. The industrial cameras 72 are connected to an external industrial control computer. The light sources 73 are symmetrically and fixedly installed on both sides of the light-shielding box body 71 and are used to provide brightness inside the light-shielding box body 71. The second pneumatic ejector 74 is fixedly installed on the conveyor 3 and is located inside the light-shielding box body 71 and is used to blow off unqualified cut potatoes. When the cut potatoes pass through the field of view of the industrial camera 72, the program starts to track the position of the cut. When the cut moves to the region of interest, the program captures a frame of the industrial camera 72 image for subsequent processing. The industrial control computer runs a pre-trained YOLO target detection algorithm model, which is specifically trained for the bud-eye features on the cut potatoes and can detect the position area where the bud eyes are located from the color images captured by the camera. In the industrial control computer, two-way YOLO target detection models are run in parallel through a multi-threaded method. Each thread is responsible for processing the input image of the corresponding industrial camera 72. Usually, there may be 0, 1, or multiple bud eyes on the surface of each cut. The number and coordinates of the bud eyes can be obtained through YOLO detection. If the detection result shows that there is at least one bud eye on the cut, the program preliminarily determines it as a qualified seed piece. On the contrary, if no bud eye is detected, it is determined as an unqualified seed piece. In addition, the vision algorithm can also identify the contour of the cut in the image to estimate the size of the cut. For example, the volume or weight range can be obtained through pixel area conversion. If it is found that the cut area is too small, such as significantly smaller than the lower limit of the normal seed piece size, or too large and does not meet the set requirements, it can also be classified as unqualified. For example, cuts smaller than a certain area threshold may be unsuitable for planting due to insufficient nutrients because of their too light weight, and although large cuts have many bud eyes, they will waste seed potatoes. The program running in the industrial control computer will comprehensively consider the bud-eye detection result and the cut size information to give a final quality determination for each cut, for example, represented by a boolean quantity "qualified / unqualified", where "qualified" can be defined as conditions such as "at least one bud eye and the cut size is within a predetermined range and there is no obvious rot lesion on the surface" are met, and "unqualified" is the situation where any key condition is not met, such as no bud eye or too small, etc. For safety reasons, the algorithm can also classify difficult-to-identify or blurred images as unqualified. Whenever a determination result is generated, the industrial control computer immediately sends the result to the PLC controller in the form of serial communication through a signal line.

[0031] The second pneumatic ejector 74 is used to remove the cut pieces of potato seeds determined to be "unqualified" from the conveyor belt of the conveyor 3. The second pneumatic ejector 74 adopts a pneumatic ejection assembly rejection mechanism. Under normal circumstances, the qualified cut pieces run to the end with the conveyor belt and then naturally fall into the qualified product collection container located below the discharge end. When the screening mechanism 7 detects that a certain cut piece is unqualified, it immediately controls the second pneumatic ejector 74 through the PLC to blow the cut piece from the conveyor belt to the unqualified cut piece discharge port. In addition to air jet, there are other equivalent rejection methods in the art, such as mechanically pushing the unqualified cut pieces out laterally from the conveyor belt by a lever or a clamping device, etc.

[0032] Furthermore, the actuators and sensors in the conveyor 3, the feeding mechanism 4, the cut piece adjustment mechanism 5, the cut piece flipping mechanism 6, and the screening mechanism 7 are centrally controlled and coordinated by a programmable logic controller. The programmable logic controller is the PLC, and a control program is pre-written in it to realize the automatic series connection of processes such as conveyor belt control, spacing adjustment, and rejection. Figure 7 The flow schematic diagram of the control method of this device is given. The input / output signal configuration of the PLC control unit is as follows: The input signals include various sensor signals and the signals transmitted through the serial port by the industrial control computer. The output signals include the control signal of the push rod device, the control signal of the conveyor belt motor, the solenoid valve control signal of the pneumatic ejection, and the control signal of the sound and light alarm device, etc. The PLC executes the predetermined logic according to the state changes of these inputs and outputs, so as to realize the automatic control of the entire device.

[0033] The control method of the present invention: Step 1: After entering the working cycle, the programmable logic controller starts the motor of the conveyor belt and begins to drive the moving plate 42 to rise and fall through the lifting assembly 43 to feed the cut pieces inside the seed box 2. While feeding, it controls the start of the push frame 441 to drive a plurality of push plates 442 to push the cut pieces to the top of the fixed plate 41 or the conveyor belt. The conveyor belt runs at a set constant speed to convey the cut pieces to the next station; Step 2: The programmable logic controller monitors the spacing of the cut pieces on the conveyor belt through the first infrared proximity sensor 51 and the second infrared proximity sensor 52. If it detects that the distance between two cut pieces is too close, it adjusts by triggering the first pneumatic ejector 53 to blow air and reject; Step 3: When the cut piece passes through the swing plate 63, if the cut piece is arc surface down, it will flip under the extrusion, friction, and obstruction of the swing plate 63, making the cut surface down. If the cut surface is down, it will pass through the swing plate 63 normally, so that the cut pieces are uniformly arc surface up and continue to be conveyed to the next station; Step 4: The cut piece continues to move forward into the field of view of the industrial camera 72, and intercepts and post-processes the frame after reaching the region of interest; Step Five: The images of the industrial camera 72 are processed by the YOLO algorithm running on the industrial control computer to detect the features of the bud eyes and cut blocks; Step Six: Generate a quality determination result and send it back to the programmable logic controller; Step Seven: According to the received signal, if the result is unqualified, the programmable logic controller immediately triggers the second pneumatic ejector 74 to eject air and remove the cut block from the conveyor belt. If the result is qualified, no rejection action is taken, and the cut block is allowed to naturally fall into the qualified product collection container.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A potato seed tuber cutting and aligning and visual intelligent sorting device, characterized in that, include: A frame, to which a seed box is fixedly connected; A conveyor, wherein the conveyor is fixedly mounted on an outer wall of the frame; A feeding mechanism, which is arranged inside the seed box and is used to feed the cut potatoes onto the conveyor; A dicing adjustment mechanism, which is disposed on the conveyor and is used to control the spacing of diced potatoes; The slicing and flipping mechanism is arranged on the conveyor and is used for slicing potatoes in a regular manner.

2. The potato seed tuber cutting and aligning and visual intelligent sorting device according to claim 1, wherein, Also includes: The screening mechanism is arranged on the conveyor and is used for screening unqualified cut potatoes.

3. The potato seed tuber cutting and aligning and visual intelligent sorting device according to claim 1, characterized in that, The feeding mechanism comprises: A fixed plate, the fixed plate is fixedly connected to the inside of the seed box at equal intervals, and the fixed plate is in a stepped shape; A movable plate, the movable plate is equidistantly slidably arranged inside the seed box, and the movable plate and the fixed plate are staggered and arranged in a stepped shape; A lifting assembly, which is arranged inside the frame and is used to drive the moving plate to move; A pushing assembly is arranged at the top of the seed box and is used for pushing the cut potatoes.

4. The potato seed tuber cutting and aligning and visual intelligent sorting device according to claim 3, wherein The lifting assembly comprises: A pneumatic push rod, wherein the pneumatic push rod is fixedly installed inside the frame; The lifting plate, the output end of the pneumatic push rod is transmission-connected with the lifting plate, the moving plate is fixedly connected to the top of the lifting plate at equal distances, and the cross section of the lifting plate is Z-shaped.

5. The potato seed tuber cutting and aligning and visual intelligent sorting device according to claim 3, wherein The pusher assembly comprises: A pneumatic push frame, wherein the pneumatic push frame is slidably arranged on the top of the seed box; A push plate is fixedly connected to the pneumatic push frame at equal distances and is used to push materials.

6. The potato seed tuber cutting and aligning and visual intelligent sorting device according to claim 1, characterized in that, The cutting adjustment mechanism comprises: A first infrared proximity sensor and a second infrared proximity sensor, wherein the first infrared proximity sensor and the second infrared proximity sensor are fixedly mounted on the conveyor and are used to detect the distance between the cut potatoes; a first pneumatic injection member, the first pneumatic injection member is fixedly mounted on the conveyor, and the first pneumatic injection member is arranged between the first infrared proximity sensor and the second infrared proximity sensor; A return channel is connected between the conveyor and the seed box and is used to recycle excess cut potatoes to the seed box.

7. A potato seed tuber cutting and aligning and visual intelligent sorting device according to claim 1, characterized in that The block turning mechanism comprises: A fixed plate, the fixed plate is symmetrically fixedly connected to the conveyor; A fixing rod, the end of which is fixedly connected to the fixing plate; The swing plate is equidistantly rotatably arranged on the fixed rod.

8. The potato seed tuber cutting and alignment and visual intelligent sorting device according to claim 2, characterized in that, The screening agencies include: A light shielding box body, wherein the light shielding box body is fixedly installed on the top of the conveyor; An industrial camera, which is symmetrically fixedly mounted on both sides of the light shielding box and is connected to an external industrial control computer; Light sources are symmetrically and fixedly mounted on both sides of the light shielding box to provide brightness inside the light shielding box; The second pneumatic injection member is fixedly installed on the conveyor and is located inside the light shielding box, and is used for blowing off unqualified cut potatoes.

9. The potato seed tuber cutting and aligning and visual intelligent sorting device according to claim 2, wherein, The conveyor, the feeding mechanism, the block adjustment mechanism, the block turning mechanism, the actuators in the screening mechanism and the sensors are all centrally controlled and coordinated by a programmable logic controller.

10. A control method for a potato seed tuber cutting and aligning and visual intelligent sorting device according to any one of claims 1-9, characterized in that, The specific usage steps are as follows: Step 1: After entering the working cycle, the programmable logic controller starts the motor of the conveyor belt and begins to drive the moving plate to lift and lower through the lifting assembly to feed the cut blocks inside the seed box. While feeding, it controls the start of the pushing frame to drive multiple push plates to push the cut blocks to the top of the fixed plate or onto the conveyor belt. The conveyor belt runs at a set constant speed to convey the cut blocks to the next station; Step 2: The programmable logic controller monitors the spacing of the cut blocks on the conveyor belt through the first infrared proximity sensor and the second infrared proximity sensor. If it detects that the distance between two cut blocks is too close, it triggers the first pneumatic ejector to perform jetting and adjustment; Step 3: When the cut block passes by the swinging plate, if the cut block has the arc surface facing down, it will flip under the extrusion, friction, and obstruction of the swinging plate, causing the cut surface to face down. If the cut surface faces down, it will pass through the swinging plate normally, making the cut blocks continue to be conveyed with the arc surface facing up to the next station; Step 4: The cut block continues to move forward into the field of view of the industrial camera. After reaching the region of interest, a frame is intercepted for post-processing; Step 5: The industrial camera image is processed by the YOLO algorithm run by the industrial control computer to detect the bud eyes and cut block features; Step 6: A quality determination result is generated and sent back to the programmable logic controller; Step 7: According to the received signal, if the result is unqualified, the programmable logic controller immediately triggers the second pneumatic ejector to jet air and remove the cut block from the conveyor belt. If the result is qualified, no rejection action is taken, and the cut block is allowed to naturally fall into the qualified product collection container.

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