An intelligent colouring device for seed pelleting coating

Abstract

The application relates to the technical field of seed processing treatment, in particular to an intelligent coloring device for seed pelleting coating, which comprises a rotating unit comprising a rotary cylinder, a rotary disc, a first driving motor, a feeding port, stirring blades and a second driving motor; a spraying unit comprising an atomizing nozzle, a storage tank, a material conveying pipe, a swing pipe, a third driving motor, a driving wheel, a driven wheel and a bearing; a data acquisition module comprising a first image acquisition unit and a second image acquisition unit; an initial parameter determination module used for determining a coloring mode of the coloring device according to the morphological characteristic value of the pelleted seeds and determining a corresponding operation strategy; and a control module used for carrying out secondary determination according to the falling rate of the coloring agent when the coloring of the pelleted seeds does not meet the preset standard according to the surface gray scale standard deviation, or determining the reason for the coloring of the pelleted seeds not meeting the preset standard according to the liquid droplet atomization characteristic value of the coloring agent, so that the coloring efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of seed processing, and particularly relates to an intelligent coloring device for seed pelleting and coating. BACKGROUND

[0002] Seed pelleting is an agricultural high-tech developed on the basis of seed coating technology to meet the needs of fine seeding. It refers to the use of specially designed pelleting materials to produce smooth, uniform size, and increased pelletized seeds through mechanical processing.

[0003] Seed pelleting coloring is an important part of the seed pelleting process. The main purpose of seed pelleting coloring is to increase the recognition of seeds and improve the efficiency of seeding. By coloring the seeds, different types of seeds can be more easily distinguished to avoid confusion during seeding. The process of seed pelleting coloring is usually carried out after pelleting. Specifically, the already pelleted seeds are sent to the coloring equipment, and the dyeing agent is evenly applied to the surface of the seeds through spraying or dipping, which has the advantages of increasing seed recognition, improving seeding efficiency, and management convenience. However, uneven stirring during the dyeing process can cause some seeds to not fully contact the dyeing agent.

[0004] Chinese patent publication No. CN109451918A discloses a seed coating pelleting coloring device, which includes a rack, a control unit, at least one feeding unit, a coating pelleting unit, a coloring unit, and two air pumps. The rack is fixed to the ground, the control unit is installed on the rack, the feeding unit, the coating pelleting unit, the coloring unit, and the air pump are sequentially arranged on the rack from top to bottom, and the control unit cooperates with the seed coating pelleting and coloring.

[0005] It can be seen that the above technical solution does not consider the influence of the size characteristics of the pelleted seeds on the uniformity of coloring, and does not consider the influence of the atomization quality and the coloring coating strength on the coloring effect, thereby causing the problem of poor coloring effect. SUMMARY

[0006] Therefore, the present application provides an intelligent coloring device for seed pelleting and coating to overcome the problem that the prior art does not consider the influence of the size characteristics of the pelleted seeds on the uniformity of coloring, and does not consider the influence of the atomization quality and the coloring coating strength on the coloring effect, thereby causing the problem of poor coloring effect.

[0007] To achieve the above-mentioned purpose, the present application provides an intelligent coloring device for seed pelleting and coating, which comprises:

[0008] The rotating unit comprises a rotating cylinder, a rotating disc arranged at the bottom of the rotating cylinder, a first driving motor for driving the rotating disc to rotate through a driving shaft, a feeding port communicated with the upper side wall of the rotating cylinder, a stirring blade arranged at the top end inside the rotating cylinder, and a second driving motor for driving the stirring blade to rotate;

[0009] The spraying unit comprises a plurality of atomizing nozzles, a storage tank for storing the coloring agent, a conveying pipe, a swinging pipe, a third driving motor, a driving wheel, a driven wheel, and a bearing. The storage tank is arranged at the top of the rotating cylinder. One end of the conveying pipe is connected with the storage tank, and the other end of the conveying pipe is connected with the swinging pipe. The bearing is symmetrically embedded in the inner wall of the rotating cylinder. A plurality of atomizing nozzles are uniformly distributed on the surface of the swinging pipe. The two ends of the swinging pipe are installed in the rotating cylinder through the bearing. The third driving motor is installed on the side wall of the rotating cylinder. One end of the driving wheel is provided with the driving wheel. One end of the swinging pipe is provided with the driven wheel. The third driving motor drives the swinging pipe to rotate through the meshing of the driving wheel and the driven wheel.

[0010] The data acquisition module comprises a first image acquisition unit arranged at the top end inside the rotating cylinder for acquiring the colored image of the pelleting seed, and a second image acquisition unit arranged at the side wall inside the rotating cylinder for acquiring the droplet image of the coloring agent.

[0011] The initial parameter determination module is connected with the data acquisition module, the first driving motor, the second driving motor, and the third driving motor, respectively, for determining the coloring mode of the coloring device according to the morphological characteristic value of the pelleting seed and determining the corresponding operation strategy.

[0012] The control module is connected with the data acquisition module, the second driving motor, and the initial parameter determination module, respectively, for determining the coloring of the pelleting seed according to the surface gray scale standard deviation, and performing secondary determination according to the shedding rate of the coloring agent when the coloring of the pelleting seed does not meet the preset standard, or determining the reason for the coloring of the pelleting seed not meeting the preset standard according to the droplet atomization characteristic value of the coloring agent.

[0013] Further, the initial parameter determination module determines the coloring mode of the coloring device according to the morphological characteristic value of the pelleting seed, wherein,

[0014] If the morphological characteristic value is less than a first preset morphological threshold value, the initial parameter determination module determines to use a first coloring mode to color the pelleting seed.

[0015] If the morphological characteristic value is greater than or equal to the first preset morphological threshold value and less than a second preset morphological threshold value, the initial parameter determination module determines to use a second coloring mode to color the pelleting seed.

[0016] If the morphological characteristic value is greater than or equal to the second preset morphological threshold value, the initial parameter determination module determines to use a third coloring mode to color the pelleting seed.

[0017] Further, the shape feature value is determined by the aspect ratio and the standard deviation of the circumference.

[0018] Further, the initial parameter determination module determines the corresponding operation strategy based on the coloring mode, wherein,

[0019] If the coloring mode is the first coloring mode, the initial parameter determination module controls the rotation of the rotary disc;

[0020] If the coloring mode is the second coloring mode, the initial parameter determination module controls the rotation of the rotary disc and the stirring blade;

[0021] If the coloring mode is the third coloring mode, the initial parameter determination module controls the rotation of the rotary disc, the rotation of the stirring blade and the change of the atomizing nozzle from direct spraying to swinging.

[0022] Further, the control module determines that the coloring of the pelletized seeds does not meet the preset standard when the surface gray scale standard deviation is greater than or equal to a first preset surface gray scale standard deviation, wherein the surface gray scale standard deviation is determined by.

[0023] Further, the control module determines whether the coloring of the pelletized seeds meets the preset standard according to the falling rate of the coloring agent under the condition that the surface gray scale standard deviation is greater than or equal to the first preset gray scale standard deviation and less than a second preset surface gray scale standard deviation, and,

[0024] The control module determines the reason why the coloring of the pelletized seeds does not meet the preset standard according to the droplet atomization characteristic value of the coloring agent under the condition that the surface gray scale standard deviation is greater than or equal to the second preset gray scale standard deviation.

[0025] Further, the control module determines that the coloring of the pelletized seeds does not meet the preset standard again and increases the coloring time according to the difference between the falling rate and the preset falling rate in response to the falling rate of the coloring agent being greater than or equal to a preset falling rate.

[0026] Further, the falling rate of the coloring agent is determined by the weight of the colored pelletized seeds and the weight of the colored pelletized seeds after simulated abrasion.

[0027] Further, the control module determines the reason why the coloring of the pelletized seeds does not meet the preset standard according to the droplet atomization characteristic value, which includes increasing the rotation speed of the stirring blade due to insufficient rotation speed of the stirring blade or issuing a warning due to clogging of the atomizing nozzle; the droplet atomization characteristic value is determined by the droplet particle size of the coloring agent.

[0028] Further, the increase range of the rotation speed of the stirring blade is positively correlated with the droplet atomization difference, wherein the droplet atomization difference is the difference between the preset droplet atomization characteristic value and the droplet atomization characteristic value.

[0029] Compared with the prior art, the beneficial effects of the present application are that the present application dynamically divides the coloring mode based on the aspect ratio and the perimeter standard deviation of the pelleting seeds before coloring, automatically matches the coordinated action of the rotating drum, the stirring blade and the atomizing nozzle for the pelleting seeds of different sizes and shapes, solves the problem of the same coloring parameters for different shaped seeds in the traditional device, improves the adaptability of the device, tests whether the coloring is uniform according to the surface gray scale standard deviation and the shedding rate of the coloring agent, introduces the droplet atomization characterization value to quickly locate the cause of the substandard coloring, improves the coloring efficiency, and thus improves the coloring effect.

[0030] Further, the present application determines whether the coloring of the pelleting machine meets the preset standard by adopting the surface gray scale standard deviation combined with the shedding rate of the coloring agent, reduces the misjudgment rate, and improves the reliability of the evaluation.

[0031] Further, the present application determines whether the coloring of the pelleting machine meets the preset standard by adopting the surface gray scale standard deviation combined with the shedding rate of the coloring agent, reduces the misjudgment rate, and improves the reliability of the evaluation.

[0032] Further, the present application divides three coloring modes according to the morphological characteristics of the pelleting seeds, reduces manual intervention, enhances the adaptability of the equipment, and thus improves the coloring efficiency of the device.

[0033] Further, the present application divides three coloring modes according to the morphological characteristics of the pelleting seeds, reduces manual intervention, enhances the adaptability of the equipment, and thus improves the coloring efficiency of the device.

[0034] Further, the present application sets the increase range of the stirring blade speed to be positively correlated with the droplet atomization difference value, and thus realizes the precise control of the increase range of the stirring blade speed. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a structure schematic view of the intelligent coloring device for seed pelleting coating of the embodiment of the present application.

[0036] Figure 2 It is a module connection schematic view of the intelligent coloring device for seed pelleting coating of the embodiment of the present application.

[0037] Figure 3 It is a flow chart for determining the coloring mode of the coloring device of the embodiment of the present application.

[0038] Figure 4 It is a flow chart for determining whether the coloring of the pelleting seeds meets the preset standard of the embodiment of the present application.

[0039] In the figure, 11 is a rotary cylinder; 12 is a rotary disc; 13 is a first driving motor; 14 is a feeding port; 15 is a stirring blade; 16 is a second driving motor; 21 is an atomizing nozzle; 22 is a storage tank; 23 is a conveying pipe; 24 is a swing pipe; 25 is a third driving motor; 26 is a driving wheel; 27 is a driven wheel; and 28 is a bearing. DETAILED DESCRIPTION

[0040] In order to make the objects and advantages of the present application clearer, the present application will be further described in conjunction with embodiments. It should be understood that the specific embodiments described herein merely serve the purpose of explaining the present application and are not intended to limit the present application.

[0041] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments merely serve to explain the technical principles of the present application and are not intended to limit the protection scope of the present application.

[0042] It should be noted that the data in the present embodiment are obtained by comprehensive analysis and evaluation of historical detection data and corresponding historical detection results of the present application in the past three months before the present detection. Those skilled in the art can understand that the determination method of the present application for a single parameter can be to select the value with the highest proportion as the preset standard parameter according to the data distribution, to use weighted summation to obtain the value as the preset standard parameter, to substitute each historical data into a specific formula and to obtain the value by using the formula as the preset standard parameter, or other selection methods, as long as the present application can clearly define different specific situations in the single determination process by using the obtained value.

[0043] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , which are embodiments of the present application.

[0044] The embodiment of the present application provides an intelligent coloring device for seed pelleting and coating, which comprises:

[0045] The rotating unit comprises a rotary cylinder 11, a rotary disc 12 arranged at the bottom of the rotary cylinder 11, a first driving motor 13 for driving the rotary disc 12 to rotate through a driving shaft, a feeding port 14 communicated with the upper side wall of the rotary cylinder 11, a stirring blade 15 arranged at the top end inside the rotary cylinder 11, and a second driving motor 16 for driving the stirring blade 15 to rotate;

[0046] The spraying unit comprises a plurality of atomizing nozzles 21, a storage tank 22 for storing colorant, a conveying pipe 23, a swing pipe 24, a third driving motor 25, a driving wheel 26, a driven wheel 27, and a bearing 28. The storage tank 22 is arranged at the top of the rotary cylinder 11. One end of the conveying pipe 23 is connected with the storage tank 22, and the other end of the conveying pipe 23 is connected with the swing pipe 24. The bearing 28 is symmetrically embedded in the inner wall of the rotary cylinder 11. A plurality of atomizing nozzles 21 are uniformly distributed on the surface of the swing pipe 24. The two ends of the swing pipe 24 are installed in the rotary cylinder 11 through the bearing 28. The third driving motor 25 is installed on the side wall of the rotary cylinder 11. One end of the driving wheel 26 is installed with the driving wheel 26. One end of the swing pipe 24 is provided with the driven wheel 27. The third driving motor 25 drives the swing pipe 24 to rotate through the meshing of the driving wheel 26 and the driven wheel 27.

[0047] The data acquisition module comprises a first image acquisition unit arranged at the top of the rotary cylinder 11 inside to acquire the colored image of the pelletized seeds, and a second image acquisition unit arranged at the side wall of the rotary cylinder 11 inside to acquire the droplet image of the colorant.

[0048] The initial parameter determination module is connected with the data acquisition module, the first driving motor 13, the second driving motor 16, and the third driving motor 25, respectively, to determine the coloring mode of the coloring device according to the morphological characteristic value of the pelletized seeds and determine the corresponding operation strategy.

[0049] The control module is connected with the data acquisition module, the second driving motor 16, and the initial parameter determination module, respectively, to determine the coloring of the pelletized seeds according to the surface gray scale standard deviation, and to determine the coloring of the pelletized seeds according to the shedding rate of the colorant when the coloring does not meet the preset standard, or to determine the reason for the coloring of the pelletized seeds according to the droplet atomization characteristic value of the colorant.

[0050] In this embodiment, the first image acquisition unit for acquiring the colored image of the pelletized seeds can be an industrial camera, and the second image acquisition unit for acquiring the droplet image of the colorant can be a high-speed microscopic camera.

[0051] Specifically, the specific structure of the initial parameter determination module and the control module is not limited, and each unit thereof can be composed of a logic component, which includes a field programmable component, a computer, or a microprocessor in the computer.

[0052] Specifically, the initial parameter determination module determines the coloring mode of the coloring device according to the morphological characteristic value of the pelletized seeds, wherein,

[0053] If the morphological characteristic value is less than a first preset morphological threshold value 0.62, the initial parameter determination module determines to color the pelletized seeds in the first coloring mode.

[0054] If the morphological characteristic value is greater than or equal to the first preset morphological threshold and less than 1.25 times the second preset morphological threshold, the initial parameter determination module determines to use the second coloring mode to color the pelleting seeds;

[0055] If the morphological characteristic value is greater than or equal to the second preset morphological threshold, the initial parameter determination module determines to use the third coloring mode to color the pelleting seeds.

[0056] Specifically, the morphological characteristic value is determined by the aspect ratio and the perimeter standard deviation. In this embodiment, an industrial camera is used to obtain the image of the pelleting seeds before coloring, and an image processing software is used to obtain the aspect ratio and the perimeter of each pelleting seed before coloring. The image processing software can be OpenCV, and the specific limitation is not made as long as it meets the requirement of identifying the seed contour in the image and analyzing and calculating the aspect ratio and the perimeter.

[0057] The morphological characteristic value is calculated by the following formula:

[0058] P = a x R + b x s

[0059] In the formula, P represents the morphological characteristic value; a represents the aspect ratio weight, a = 0.6; R represents the aspect ratio; b represents the perimeter standard deviation weight, b = 0.4; s represents the perimeter standard deviation;

[0060] Specifically, the initial parameter determination module determines the corresponding running strategy based on the coloring mode, wherein,

[0061] If the coloring mode is the first coloring mode, the initial parameter determination module controls the rotation of the rotary disc 12;

[0062] If the coloring mode is the second coloring mode, the initial parameter determination module controls the rotation of the rotary disc 12 and the stirring blade 15;

[0063] If the coloring mode is the third coloring mode, the initial parameter determination module controls the rotation of the rotary disc 12, the rotation of the stirring blade 15 and the change of the atomizing nozzle 21 from direct shooting to swinging.

[0064] The third driving motor 25 is powered off, the swinging pipe 24 is kept stationary through the self-locking mechanism, and the atomizing nozzle 21 sprays along the fixed direction;

[0065] Swinging state: the initial parameter determination module controls the third driving motor 25, and the third driving motor 25 drives the swinging pipe 24 to rotate back and forth at a speed of 5-15 rpm, the swinging angle range is ±30°-±60°, so that the spraying trajectory of the atomizing nozzle 21 is fan-shaped coverage.

[0066] Specifically, the control module determines that the coloring of the pelletized seeds does not meet the preset standard in response to the surface gray scale standard deviation being greater than or equal to a first preset surface gray scale standard deviation 15, wherein the surface gray scale standard deviation is obtained by image processing software.

[0067] In this embodiment, the gray scale value of each pixel point of the image of the colored pelletized seeds obtained by the first image acquisition unit is extracted by using image processing software, and the gray scale value standard deviation, i.e., the surface gray scale standard deviation, is calculated, wherein the image processing software can be MATLAB, and is not specifically limited as long as the gray scale value extraction requirement is met.

[0068] Specifically, the control module determines whether the coloring of the pelletized seeds meets the preset standard according to the shedding rate of the coloring agent under the condition that the surface gray scale standard deviation is greater than or equal to the first preset gray scale standard deviation 15 and less than a second preset surface gray scale standard deviation 35, and

[0069] The control module determines the reason why the coloring of the pelletized seeds does not meet the preset standard according to the droplet atomization characterization value of the coloring agent under the condition that the surface gray scale standard deviation is greater than or equal to the second preset gray scale standard deviation 35.

[0070] Specifically, the control module determines that the coloring of the pelletized seeds does not meet the preset standard in response to the shedding rate of the coloring agent being greater than or equal to a preset shedding rate 8%, and increases the coloring time according to the difference between the shedding rate and the preset shedding rate.

[0071] Specifically, the shedding rate of the coloring agent is determined by the weight of the colored pelletized seeds and the weight of the pelletized seeds after simulated abrasion.

[0072] The shedding rate is calculated by the following formula:

[0073]

[0074] In the formula, D represents the shedding rate; m pre represents the weight of the pelletized seeds after coloring; m post represents the weight of the pelletized seeds after simulated abrasion; m base represents the weight of the pelletized seeds before coloring;

[0075] The simulated abrasion is to set a vibration test table at the quality detection station, and the vibration parameters are frequency 15 Hz, amplitude 2 mm, and duration 120 seconds to simulate the mechanical impact in the transportation process.

[0076] Specifically, the control module determines the reason why the coloring of the pelletized seeds does not meet the preset standard according to the droplet atomization characterization value, wherein,

[0077] If the droplet atomization characteristic value is less than the preset droplet atomization characteristic value 0.15, it is determined that the stirring blade 15 rotation speed is insufficient, and the stirring blade 15 rotation speed is increased according to the difference between the preset droplet atomization characteristic value and the droplet atomization characteristic value;

[0078] If the droplet atomization characteristic value is greater than or equal to the preset droplet atomization characteristic value, it is determined that the atomizing nozzle 21 is blocked, and a warning is issued; the droplet atomization characteristic value is determined by the droplet particle size of the colorant;

[0079] Specifically, the droplet particle size of the colorant is obtained by an image processing algorithm;

[0080] The droplet atomization characteristic value is the ratio between the droplet particle size standard deviation and the droplet average particle size.

[0081] Specifically, the increase amplitude of the stirring blade 15 rotation speed is positively correlated with the droplet atomization difference, wherein the positive correlation is, for example, linear positive correlation or nonlinear positive correlation, and the linear slope of the linear positive correlation is not specifically limited. It can be understood that the greater the droplet atomization difference, the greater the increase amplitude of the stirring blade 15 rotation speed. The droplet atomization difference is the difference between the preset droplet atomization characteristic value and the droplet atomization characteristic value.

[0082] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to related technical features without deviating from the principles of the present application, and the technical solutions after these changes or replacements will fall within the protection scope of the present application.

[0083] The above description is only the preferred embodiments of the present application and is not intended to limit the present application; for those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An intelligent colouring device for seed pelleting coating characterized in that, The application relates to a colorant device for pelletized seeds, which comprises a rotating unit, a spraying unit, a data acquisition module, an initial parameter determination module and a control module. The rotating unit comprises a rotating cylinder, a rotating disc arranged at the bottom of the rotating cylinder, a first driving motor for driving the rotating disc to rotate through a driving shaft, a feeding port communicated with the upper side wall of the rotating cylinder, stirring blades arranged at the top end of the interior of the rotating cylinder, and a second driving motor for driving the stirring blades to rotate; The spraying unit comprises a plurality of atomizing nozzles, a storage tank for storing colorants, a conveying pipe, a swinging pipe, a third driving motor, a driving wheel and a driven wheel, wherein the storage tank is arranged at the top of the rotating cylinder, one end of the conveying pipe is connected with the storage tank, the other end of the conveying pipe is connected with the swinging pipe, bearings are symmetrically embedded in the inner wall of the rotating cylinder, a plurality of atomizing nozzles are uniformly distributed on the surface of the swinging pipe, the two ends of the swinging pipe are installed in the rotating cylinder through the bearings, the third driving motor is installed on the side wall of the rotating cylinder, one end of the driving wheel is provided with the driving wheel, one end of the swinging pipe is provided with the driven wheel, and the third driving motor drives the swinging pipe to rotate through the meshing of the driving wheel and the driven wheel; The data acquisition module comprises a first image acquisition unit arranged at the top end of the interior of the rotating cylinder and used for acquiring the colored image of the pelletized seeds, and a second image acquisition unit arranged at the side wall of the interior of the rotating cylinder and used for acquiring the droplet image of the colorants; The initial parameter determination module is connected with the data acquisition module, the first driving motor, the second driving motor and the third driving motor, and is used for determining the coloring mode of the colorant device according to the morphological characteristic value of the pelletized seeds and determining the corresponding operation strategy; The control module is connected with the data acquisition module, the second driving motor and the initial parameter determination module, and is used for determining the coloring of the pelletized seeds according to the surface gray scale standard deviation, performing secondary determination according to the falling rate of the colorants when the coloring of the pelletized seeds does not conform to the preset standard, or determining the reason for the coloring of the pelletized seeds not conforming according to the droplet atomization characteristic value of the colorants; The initial parameter determination module determines the coloring mode of the colorant device according to the morphological characteristic value of the pelletized seeds, wherein if the morphological characteristic value is less than a first preset morphological threshold value, the initial parameter determination module determines to use a first coloring mode to color the pelletized seeds; if the morphological characteristic value is greater than or equal to the first preset morphological threshold value and less than a second preset morphological threshold value, the initial parameter determination module determines to use a second coloring mode to color the pelletized seeds; if the morphological characteristic value is greater than or equal to the second preset morphological threshold value, the initial parameter determination module determines to use a third coloring mode to color the pelletized seeds; The initial parameter determination module determines the corresponding operation strategy based on the coloring mode, wherein if the coloring mode is the first coloring mode, the initial parameter determination module controls the rotating disc to rotate; if the coloring mode is the second coloring mode, the initial parameter determination module controls the rotating disc and the stirring blades to rotate; if the coloring mode is the third coloring mode, the initial parameter determination module controls the rotating disc to rotate, the stirring blades to rotate and the atomizing nozzles to change from direct radiation to swinging. The control module determines that the coloring of the pelletized seeds does not meet the preset standard in response to the surface gray scale standard deviation being greater than or equal to a first preset surface gray scale standard deviation, wherein the surface gray scale standard deviation is determined by gray scale values of each pixel point of the image of the pelletized seeds; The control module determines whether the coloring of the pelletized seeds meets the preset standard according to the falling rate of the coloring agent under the condition that the surface gray scale standard deviation is greater than or equal to the first preset gray scale standard deviation and less than a second preset surface gray scale standard deviation, and The control module determines the reason why the coloring of the pelletized seeds does not meet the preset standard according to the droplet atomization characteristic value of the coloring agent under the condition that the surface gray scale standard deviation is greater than or equal to the second preset gray scale standard deviation; The control module determines the reason why the coloring of the pelletized seeds does not meet the preset standard according to the droplet atomization characteristic value, including increasing the rotating speed of the stirring blade due to insufficient rotating speed of the stirring blade, or issuing a warning due to clogging of the atomizing nozzle; the droplet atomization characteristic value is determined by the droplet particle size of the coloring agent; The increasing range of the rotating speed of the stirring blade is positively correlated with the droplet atomization difference value, wherein the droplet atomization difference value is the difference between the preset droplet atomization characteristic value and the droplet atomization characteristic value.

2. The intelligent colouring device for seed pelleting coating as claimed in claim 1, wherein, The shape characteristic value is determined by the aspect ratio and the perimeter standard deviation.

3. The intelligent colouring device for seed pelleting coating as claimed in claim 2, wherein, The control module re-determines that the coloring of the pelletized seeds does not meet the preset standard in response to the falling rate of the coloring agent being greater than or equal to a preset falling rate, and increases the coloring time according to the difference between the falling rate and the preset falling rate.

4. The intelligent colouring device for seed pelleting coating as claimed in claim 3, wherein, The falling rate of the coloring agent is determined by the weight of the colored pelletized seeds and the weight of the colored pelletized seeds after simulated abrasion.

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