A method and control system for controlling seed rubbing of green manure seeds

Abstract

This invention discloses a seed-grinding control method and control system for green manure seeds. The seed-grinding control method includes: acquiring the variety information of the green manure seeds to be processed; determining the ratio of green manure seeds to seed-grinding auxiliary material, seed-grinding time, and seed-grinding drum rotation speed data based on the variety information; determining the maximum seed-grinding quantity per batch based on the metering information and ratio data of the seed-grinding auxiliary material; controlling the operation of the feeding mechanism to input a batch of green manure seeds into the drum and mix them with the seed-grinding auxiliary material; controlling the operation of the drum to perform the seed-grinding operation; and performing a seed-screening operation after the seed-grinding operation is completed to separate the green manure seeds from the seed-grinding auxiliary material. In this invention, seed-grinding is performed by mixing green manure seeds and seed-grinding auxiliary material and then stirring them together. The control unit determines the mixing ratio of green manure seeds and seed-grinding auxiliary material, the seed-grinding time, and the seed-grinding drum rotation speed based on the variety information of the green manure seeds, and performs seed-grinding in batches accordingly. The process is reasonable, efficient, and less likely to damage the seeds.

Description

Technical Field

[0001] This invention relates to the field of agricultural seed treatment technology, and in particular to a seed wiping control method and control system for green manure seeds. Background Technology

[0002] Green manure seeds have a waxy layer on their surface. If sown directly, the germination rate of green manure seeds is low due to the water and air barrier effect of the waxy layer. Therefore, it is necessary to perform a pre-treatment of green manure seeds by wiping them to a certain extent, as well as removing dust and other substances from the outside of old seeds, in order to improve the air permeability and water absorption of the seed surface, thereby promoting seed germination and growth.

[0003] In the prior art, patent CN21 5957044U discloses a seed-wiping device for milkvetch, which performs seed wiping operations by using a seed-wiping plate fixedly installed inside a drum. When the seed-wiping device is running, the drum rotates and throws milkvetch seeds onto the seed-wiping plate for wiping. This seed-wiping method is inefficient and easily damages green manure seeds. It is necessary to develop a high-efficiency seed-wiping machine that is less likely to damage seeds, as well as a corresponding control method and control system. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a seed wiping control method and control system for green manure seeds that is efficient, does not easily damage the seeds, and has a reasonable process.

[0005] Technical Solution: To achieve the above objectives, the present invention provides a seed-grinding control method for green manure seeds, which is applied to a green manure seed-grinding machine. The seed-grinding machine includes a drum and a feeding mechanism. The drum is driven by a drum motor. The drum contains seed-grinding auxiliary material, which is composed of seed-grinding particles made of a hard and wear-resistant material and has a rough surface. The method includes:

[0006] Step S11: Obtain the variety information of the green manure seeds to be processed; the variety information is input by the user through an input device such as a touch screen;

[0007] Step S12: Determine the ratio of green manure seeds to seed-grinding additives based on the variety information;

[0008] Step S13: Determine the maximum amount of seeds to be rubbed in a single batch based on the metering information of the seed rubbing auxiliary material and the ratio data; wherein, the metering information of the seed rubbing auxiliary material can be weight or volume, and correspondingly, the ratio data is the weight ratio or volume ratio.

[0009] Step S14: Control the operation of the feeding mechanism to input a batch of green manure seeds into the drum and mix them with the seed-rubbing auxiliary material. The amount of green manure seeds input shall not exceed the maximum amount of seeds to be rubbed in a single batch.

[0010] Step S15: Control the rotation of the roller to perform the wiping and seeding operation;

[0011] Step S16: After the seed wiping operation is completed, a seed screening operation is performed to separate the green manure seeds from the seed wiping aid. Then return to step S14 until all green manure seeds have been wiped.

[0012] Furthermore, the seed-wiping particles can have various shapes, such as circles, cubes, triangles, or other irregular shapes. Each shape of seed-wiping particle has more than one size specification. Step S11 is followed by:

[0013] The composition data of the seed-grinding aid is determined based on the variety information. This composition data includes the types and proportions of seed-grinding particles, as well as the size specifications and ratios of each type of particle. For seeds with a low waxy layer, spherical particles can be used; for seeds with a high waxy layer, triangular particles or a mixture of triangular and spherical particles can be used as the seed-grinding aid. Simultaneously using seed-grinding particles of different sizes, and mixing seed-grinding particles of different specifications, can increase the contact opportunity between the seed-grinding particles and the seeds, thus improving the seed-grinding effect.

[0014] Furthermore, the internal space of the drum is divided into two parts by spiral blades, namely a seed wiping chamber and a seed screening chamber. The seed wiping chamber and the seed screening chamber are respectively provided with a first guide blade and a second guide blade. The guide blades are fixed on the inner wall of the drum, and their two ends are offset in the axial direction of the drum. The outer wall of the seed screening chamber is provided with sieve holes.

[0015] Step S15 specifically involves: controlling the drum motor to rotate forward, so that the drum rotates forward; when the drum rotates forward, the spiral blades block the mixture in the seed wiping bin, preventing the mixture in the seed wiping bin from entering the seed screening bin, and the first guide blades cause the mixture in the seed wiping bin to move away from the spiral blades.

[0016] The seed screening operation described in step S16 to separate the green manure seeds from the seed-grinding auxiliary material specifically involves: controlling the drum motor to reverse, causing the drum to reverse; when the drum reverses, the first guide vane moves the mixture in the seed-grinding chamber towards the spiral vane, preventing the material from remaining in the seed-grinding chamber; simultaneously, the spiral vane's reversal conveys the mixture in the seed-grinding chamber to the seed screening chamber, preventing material backflow in the seed screening chamber; after the mixture enters the seed screening chamber, as the drum continues to rotate, the green manure seeds gradually leak out from the sieve holes, leaving only the seed-grinding auxiliary material inside the drum. During the seed screening process, the second guide vane moves the material in the seed screening chamber away from the spiral vane;

[0017] The method after step S16 further includes: controlling the drum motor to rotate forward, so that the drum rotates forward, and the wiping auxiliary material in the seed screening chamber enters the seed screening chamber through the spiral blades. During this process, the second guide blades move the wiping auxiliary material in the seed screening chamber towards the spiral blades, so as to prevent wiping particles from being stuck in the seed screening chamber.

[0018] In the above steps, the spiral blades are used to divide the drum, which allows the drum to be used for two purposes. The spiral blades are cleverly used as separators, so that the material can be transferred between the seed wiping bin and the seed screening bin by simply controlling the forward and reverse rotation of the drum. The control is convenient and the material transfer space is highly efficient. The overall structure of the seed wiping mechanism and the seed screening mechanism is also very compact and adapts to the characteristics of the seed wiping principle in this application. That is, after the wiped green manure seeds are screened out, the seed wiping auxiliary material is returned to the seed wiping bin to participate in the next round of seed wiping operation.

[0019] Furthermore, after step S11, the method further includes:

[0020] The target rotational speed of the roller during the seed wiping and screening operations is determined based on the variety information. In steps S15 and S16, the rotational speed of the roller motor is calculated based on the corresponding target rotational speed er, and the operation of the roller motor is controlled accordingly.

[0021] Furthermore, after step S11, the method further includes:

[0022] The seed wiping time and seed screening time are determined based on the variety information. In step S16, whether seed wiping is completed is determined based on whether the seed wiping operation time has reached the seed wiping time limit, and whether seed screening is completed is determined based on whether the seed screening operation time has reached the seed screening time limit.

[0023] Further, the feeding mechanism includes a feeding hopper, a screw feeder, and a feeding motor; step S14, controlling the operation of the feeding mechanism to input a batch of green manure seeds into the drum for mixing with the seed-grinding auxiliary material, includes:

[0024] Step S21: Calculate the target number of rotations of the screw feeder based on the maximum amount of seeds wiped in a single batch and the amount of material fed per rotation of the screw feeder.

[0025] Step S22: Calculate the rotation number of the feeding motor based on the target number of rotations, and drive the feeding motor to operate accordingly.

[0026] A seed-wiping control system for green manure seeds includes a control unit capable of implementing the above-described seed-wiping control method, the control unit being connected to the roller motor and the feeding mechanism.

[0027] Furthermore, the control unit is a touchscreen computer, which allows users to conveniently select varieties, view the work progress, and check the system status.

[0028] Furthermore, the roller motor is an AC geared motor, and the feeding motor of the feeding mechanism is a stepper motor; the control unit is connected to the roller motor and the feeding motor through a frequency converter and a driver, respectively.

[0029] Furthermore, the frequency converter and the driver are connected to the control unit via an RS485 bus.

[0030] Beneficial Effects: The seed-rubbing control method and control system of this invention for green manure seeds uses a seed-rubbing auxiliary material mixed with green manure seeds. This mixture drives a rotating drum, allowing the auxiliary material and seeds to rub against each other effectively. The seed-rubbing particles in the auxiliary material effectively remove the wax layer from the surface of the green manure seeds. After rubbing, the seeds are sieved out, resulting in a rational process. Because the seed-rubbing particles are fully surrounded by the green manure seeds during rubbing, the surface area of ​​the particles is utilized to the maximum extent, leading to high rubbing efficiency. Determining the mixing ratio of green manure seeds and the auxiliary material based on variety information ensures an appropriate ratio, effectively leveraging the rubbing effect of the particles. Compared to existing methods that involve seeds impacting a rubbing plate, this invention's method is less likely to damage the seeds. Furthermore, the rubbing time and drum speed can be determined based on the seed variety information, ensuring the operating parameters of the green manure seed-rubbing machine are fully adapted to the green manure seeds being rubbed, thus improving the rubbing effect. Attached Figure Description

[0031] Figure 1 This is a structural diagram of a green manure seed wiping machine;

[0032] Figure 2 This is an exploded view of the drum.

[0033] Figure 3 Here is a structural diagram of the feeding mechanism;

[0034] Figure 4 This is a structural diagram of the control system;

[0035] Figure 5 This is a flowchart illustrating the seed control method.

[0036] In the diagram: 1-Drum; 10-Drum motor; 11-Seed wiping bin; 12-Seed screening bin; 13-First guide blade; 14-Second guide blade; 2-Feeding mechanism; 21-Feeding hopper; 22-Screw feeder; 23-Feeding motor; 3-Screw blade; 4-Control unit; 41-Frequency converter; 42-Driver. Detailed Implementation

[0037] The invention will now be further described with reference to the accompanying drawings.

[0038] The seed wiping control method and control system of the present invention are based on Figure 1 The green manure seed wiping machine shown includes a roller 1 and a feeding mechanism 2. The roller 1 is driven by a roller motor 10. The roller 1 contains seed wiping auxiliary material, which is composed of seed wiping particles. The seed wiping particles are made of hard and wear-resistant material and have a rough surface.

[0039] The control system of the green manure seed wiping machine includes a control unit 4 capable of implementing the following seed wiping control method. The control unit 4 is connected to the roller motor 10 and the feeding mechanism 2.

[0040] In this embodiment, the control unit 4 is a touchscreen computer, which allows users to easily select product types and view the work progress and system status. The roller motor 10 is an AC geared motor, and the feeding motor 23 of the feeding mechanism 2 is a stepper motor; as... Figure 4 As shown, the control unit 4 is connected to the roller motor 10 and the feed motor 23 via a frequency converter 41 and a driver 42, respectively. The frequency converter 41 and the driver 42 are connected to the control unit 4 via an RS485 bus.

[0041] like Figure 5 As shown, the seed-wiping control method based on the above-mentioned green manure seed-wiping machine includes the following steps S11-S16:

[0042] Step S11: Obtain the variety information of the green manure seeds to be processed; the variety information is input by the user through an input device such as a touch screen;

[0043] Step S12: Determine the ratio of green manure seeds to seed-grinding additives based on the variety information;

[0044] Step S13: Determine the maximum amount of seeds to be rubbed in a single batch based on the metering information of the seed rubbing auxiliary material and the ratio data; wherein, the metering information of the seed rubbing auxiliary material can be weight or volume, and correspondingly, the ratio data is the weight ratio or volume ratio.

[0045] Step S14: Control the feeding mechanism 2 to operate so as to input a batch of green manure seeds into the drum 1 and mix them with the seed rubbing auxiliary material. The amount of green manure seeds input shall not exceed the maximum amount of seeds to be rubbed in a single batch.

[0046] Step S15: Control the rotation of the roller 1 to perform the wiping seed operation;

[0047] Step S16: After the seed wiping operation is completed, a seed screening operation is performed to separate the green manure seeds from the seed wiping aid. Then return to step S14 until all green manure seeds have been wiped.

[0048] In this invention, after mixing the seed-grinding aid with green manure seeds, the driving roller 1 rotates, allowing the seed-grinding aid and green manure seeds to rub against each other thoroughly within the roller 1. The seed-grinding particles in the aid effectively remove the wax layer on the surface of the green manure seeds. Because the seed-grinding particles are fully surrounded by the green manure seeds during grinding, the surface area of ​​the particles can be utilized to the maximum extent, resulting in high grinding efficiency. Determining the mixing ratio of green manure seeds and seed-grinding aid based on variety information ensures an appropriate mixing ratio and effectively utilizes the grinding effect of the seed-grinding particles.

[0049] Preferably, the seed-wiping particles can have various shapes, such as circles, cubes, triangles, or other irregular shapes. Each shape of seed-wiping particle has more than one size specification. After step S11, the method further includes:

[0050] The composition data of the seed-grinding aid is determined based on the variety information. This composition data includes the types and proportions of seed-grinding particles, as well as the size specifications and ratios of each type of particle. For seeds with a low waxy layer, spherical particles can be used; for seeds with a high waxy layer, triangular particles or a mixture of triangular and spherical particles can be used as the seed-grinding aid. Simultaneously using seed-grinding particles of different sizes, and mixing seed-grinding particles of different specifications, can increase the contact opportunity between the seed-grinding particles and the seeds, thus improving the seed-grinding effect.

[0051] Preferably, such as Figure 2As shown, the internal space of the drum 1 is divided into two parts by the spiral blades 3, which are fixed relative to the drum 1. These parts are a seed wiping chamber 11 and a seed sieving chamber 12. The seed wiping chamber 11 and the seed sieving chamber 12 are respectively equipped with a first guide blade 13 and a second guide blade 14. The guide blades are fixed to the inner wall of the drum 1, and their two ends are offset in the axial direction of the drum 1. The outer wall of the seed sieving chamber 12 has sieve holes. Based on this, step S15 specifically involves controlling the drum motor 10 to rotate forward, so that the drum 1 rotates forward. When the drum 1 rotates forward, the spiral blades 3 act as a barrier to prevent the mixture in the seed wiping chamber 11 from entering the seed sieving chamber 12, and the first guide blades 13 cause the mixture in the seed wiping chamber 11 to move away from the spiral blades 3.

[0052] The seed screening operation described in step S16 to separate the green manure seeds from the seed-grinding auxiliary material specifically involves: controlling the drum motor 10 to reverse, causing the drum 1 to reverse; when the drum 1 reverses, the first guide blade 13 moves the mixture in the seed-grinding chamber 11 towards the spiral blade 3, preventing the material from remaining in the seed-grinding chamber 11. Simultaneously, the spiral blade 3, when reversing, transports the mixture in the seed-grinding chamber 11 to the seed screening chamber 12, preventing material backflow in the seed screening chamber 12; after the mixture enters the seed screening chamber 12, as the drum 1 continues to rotate, the green manure seeds gradually leak out through the sieve holes, leaving only the seed-grinding auxiliary material inside the drum 1. During the screening process, the second guide blade 14 moves the material in the seed screening chamber 12 away from the spiral blade 3.

[0053] The method following step S16 further includes: controlling the drum motor 10 to rotate forward, causing the drum 1 to rotate forward, so that the wiping auxiliary material in the seed screening chamber 12 enters the seed wiping chamber 11 via the spiral blades 3. During this process, the second guide blades 14 move the wiping auxiliary material in the seed screening chamber 12 towards the spiral blades 3, thus preventing any wiping particles from remaining in the seed screening chamber 12. The wiping auxiliary material returning to the seed wiping chamber 11 continues to participate in the wiping operation of the next batch of green manure seeds.

[0054] In the above steps, the spiral blades 3 are used to divide the drum 1, which allows the drum 1 to be used for two purposes. The spiral blades 3 are cleverly used as separators, so that the material can be transferred between the seed wiping bin 11 and the seed screening bin 12 by simply controlling the forward and reverse rotation of the drum 1. The control is convenient and the material transfer space is highly efficient. The overall structure of the seed wiping mechanism and the seed screening mechanism is also very compact and adapts to the characteristics of the seed wiping principle in this application. That is, after the wiped green manure seeds are screened out, the seed wiping auxiliary material is returned to the seed wiping bin 11 to participate in the next round of seed wiping operation.

[0055] Preferably, after step S11, the method further includes: determining the target rotational speed of the roller 1 in the seed wiping and seed screening operations based on the variety information. In steps S15 and S16, the rotational speed of the roller motor 10 is calculated based on the corresponding target rotational speed, and the roller motor 10 is controlled to operate accordingly. For green manure seeds with low seed coat hardness, a lower target rotational speed for seed wiping is set to prevent seed damage; for green manure seeds with high seed coat hardness, a higher target rotational speed for seed wiping is set to improve seed wiping efficiency. The target rotational speed for seed screening is determined by conducting experiments with the aim of not damaging the seeds, and determining the highest possible rotational speed as the target rotational speed for seed screening.

[0056] Preferably, after step S11, the method further includes: determining the wiping time and the sieving time based on the variety information. In step S16, whether wiping is completed is determined based on whether the wiping operation time has reached the wiping time limit, and whether sieving is completed is determined based on whether the sieving operation time has reached the sieving time limit. The wiping time can be determined based on a pre-conducted wiping experiment. In the wiping experiment, a suitable target rotation speed for the wiping operation can be determined first, and then the rotation of the drum 1 can be controlled at the target rotation speed to conduct the experiment. The time when the wiping effect meets the requirements is determined, and this time is taken as the wiping time. The sieving time can also be determined in the same way, that is, the target rotation speed for the sieving operation is determined first, and then the rotation of the drum 1 can be controlled at the target rotation speed to conduct the experiment. The time when sieving is completed is taken as the sieving time.

[0057] Preferably, the feeding mechanism 2 includes a feeding hopper 21, a screw feeder 22, and a feeding motor 23, such as Figure 3 As shown; step S14, controlling the operation of the feeding mechanism 2 to input a batch of green manure seeds into the drum 1 and mix them with the seed-grinding auxiliary material, includes:

[0058] Step S21: Calculate the target number of rotations of the screw feeder 22 based on the maximum amount of seeds wiped in a single batch and the amount of material fed per turn of the screw feeder 22.

[0059] Step S22: Calculate the rotation number of the feeding motor 23 based on the target number of rotations, and drive the feeding motor 23 to operate accordingly.

[0060] As can be seen, the control unit can determine a series of data based on the type of seed, such as the material ratio (the ratio of green manure seeds to seed-grinding auxiliary material), the seed-grinding particle composition of the seed-grinding auxiliary material, the drum speed during seed-grinding, the drum speed during seed-screening, and the duration of seed-grinding and seed-screening operations, to ensure the seed-grinding effect.

[0061] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A seed-wiping control method for green manure seeds, applied to a green manure seed-wiping machine, the seed-wiping machine comprising a roller (1) and a feeding mechanism (2), the roller (1) being driven by a roller motor (10); characterized in that, The roller (1) contains a seed-grinding auxiliary material, which is composed of seed-grinding particles. The method includes: Step S11: Obtain the variety information of the green manure seeds to be processed; Step S12: Determine the ratio of green manure seeds to seed-grinding additives based on the variety information; Step S13: Determine the maximum amount of seeds to be rubbed in a single batch based on the metering information of the seed rubbing auxiliary material and the proportion data; wherein, the metering information of the seed rubbing auxiliary material may be weight or volume. Step S14: Control the feeding mechanism (2) to operate so as to input a batch of green manure seeds into the drum (1) and mix them with the seed rubbing auxiliary material. The amount of green manure seeds input shall not exceed the maximum amount of seeds rubbing in a single batch. Step S15: Control the roller (1) to operate and perform the wiping operation; Step S16: After the seed wiping operation is completed, a seed screening operation is performed to separate the green manure seeds from the seed wiping aid. The internal space of the roller (1) is divided into two parts by the spiral blades (3), namely the seed wiping chamber (11) and the seed screening chamber (12). The seed wiping chamber (11) and the seed screening chamber (12) are respectively equipped with a first guide blade (13) and a second guide blade (14); the outer wall of the seed screening chamber (12) is equipped with sieve holes. Step S15 specifically involves controlling the drum motor (10) to rotate forward so that the drum (1) rotates forward; when the drum (1) rotates forward, the spiral blades (3) block the mixture in the seed wiping bin (11), so that the mixture in the seed wiping bin (11) will not enter the seed screening bin (12), and the first guide blades (13) cause the mixture in the seed wiping bin (11) to move away from the spiral blades (3); The step S16 of performing a seed screening operation to separate the green manure seeds from the seed wiping auxiliary material specifically involves: controlling the drum motor (10) to reverse so that the drum (1) reverses; when the drum (1) reverses, the first guide blade (13) moves the mixture in the seed wiping bin (11) toward the direction closer to the spiral blade (3) to prevent the material from remaining in the seed wiping bin (11). At the same time, when the spiral blade (3) reverses, it can transport the mixture in the seed wiping bin (11) to the seed screening bin (12) to prevent the material in the seed screening bin (12) from flowing back; after the mixture enters the seed screening bin (12), as the drum (1) continues to rotate, the green manure seeds gradually leak out from the sieve holes, leaving only the seed wiping auxiliary material in the drum (1); during the seed screening process, the second guide blade (14) moves the material in the seed screening bin (12) away from the spiral blade (3); After step S16, the method further includes: controlling the drum motor (10) to rotate forward, so that the drum (1) rotates forward, so that the seed wiping auxiliary material in the seed sieve bin (12) enters the seed wiping bin (11) through the spiral blade (3).

2. The seed-wiping control method for green manure seeds according to claim 1, characterized in that, The seed-wiping particles have various shapes, and each shape of seed-wiping particles has more than one size specification. After step S11, the method further includes: The composition data of the seed-grinding auxiliary material is determined based on the variety information; the composition data includes the types and proportions of seed-grinding particles, as well as the size specifications and ratios of each type of seed-grinding particle.

3. The seed-wiping control method for green manure seeds according to claim 1, characterized in that, After step S11, the method further includes: The target rotational speed of the roller (1) in the seed wiping and seed screening operations is determined based on the variety information.

4. The seed-wiping control method for green manure seeds according to claim 1, characterized in that, After step S11, the method further includes: The seed wiping time and seed screening time are determined based on the variety information.

5. The seed-wiping control method for green manure seeds according to claim 1, characterized in that, The feeding mechanism (2) includes a feeding hopper (21), a screw feeder (22), and a feeding motor (23); the step S14 of controlling the operation of the feeding mechanism (2) to input a batch of green manure seeds into the drum (1) and mix them with the seed-grinding auxiliary material includes: Step S21: Calculate the target number of rotations of the screw feeder (22) based on the maximum amount of seeds wiped in a single batch and the amount of material fed in a single turn of the screw feeder (22). Step S22: Calculate the rotation number of the feed motor (23) based on the target number of rotations, and drive the feed motor (23) to operate accordingly.

6. A seed-wiping control system for green manure seeds, characterized in that, It includes a control unit (4) capable of implementing the seed wiping control method according to any one of claims 1-5, the control unit (4) being connected to the roller motor (10) and the feeding mechanism (2).

7. The seed-wiping control system for green manure seeds according to claim 6, characterized in that, The control unit (4) is a touch screen computer.

8. The seed-wiping control system for green manure seeds according to claim 6, characterized in that, The roller motor (10) is an AC geared motor, and the feeding motor (23) of the feeding mechanism (2) is a stepper motor; the control unit (4) is connected to the roller motor (10) and the feeding motor (23) through the frequency converter (41) and the driver (42) respectively.

9. The seed-wiping control system for green manure seeds according to claim 8, characterized in that, The frequency converter (41) and the driver (42) are connected to the control unit (4) via an RS485 bus.

Images