Control circuit and method of rice huller

Abstract

This invention relates to the field of mechanical control technology, and more particularly to a control circuit and method for a rice huller. The invention analyzes images of the vibrating screen surface of the rice huller to generate control commands for the following: tilt angle control command (controlling the tilt angle of the screen), flow rate control command (controlling the feed speed of the hopper), grading plate control command (controlling the grading plate at the discharge port), and screen body control command (controlling the operating frequency of the vibrating screen). This enables the operation of each stepper motor in the rice huller, thereby achieving operational control of the rice huller.

Description

Technical Field

[0001] This invention relates to the field of mechanical control technology, and in particular to a control circuit and method for a rice huller. Background Technology

[0002] Gravity paddy separators are devices that utilize the differences in specific gravity, particle size, and surface friction coefficient between paddy grains, and employ a bidirectional inclined, reciprocating screen plate to automatically classify and separate paddy grains. However, existing paddy grain separators require manual control, which wastes manpower and is inefficient.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The main objective of this invention is to provide a control circuit and method for a huller, which aims to solve the technical problem that hullers in the prior art require manual control, resulting in wasted human resources and low efficiency.

[0005] To achieve the above objectives, the present invention provides a control circuit for a rice huller, the control circuit comprising: a data acquisition circuit, a main control circuit, and a drive circuit, wherein the main control circuit is sequentially connected to the data acquisition circuit and the drive circuit.

[0006] The acquisition circuit is used to acquire the screen surface signal of the vibrating screen body of the rice huller;

[0007] The main control circuit is used to receive the screen surface signal and output a drive control signal according to the screen surface signal;

[0008] The drive circuit is used to receive the drive control signal and control the operating state of each stepper motor according to the drive control signal.

[0009] Optionally, the main control circuit includes an S7-200 smart ST40 control chip, the input terminal of which is connected to the output terminal of the acquisition circuit, and the output terminal of which is connected to the input terminal of the drive circuit.

[0010] Optionally, the drive circuit includes: an inclination angle control circuit, a flow control circuit, a screen body control circuit, and a discharge control circuit;

[0011] The screen body control circuit is used to control the operating state of the vibrating screen body motor according to the drive control signal, so as to control the vibration frequency of the gluten mill vibrating screen body.

[0012] The discharge control circuit is used to control the operating state of the grading plate motor according to the drive control signal, so as to control the position information of the grading plate at the discharge port of the chaff mill.

[0013] The tilt control circuit is used to control the operating state of the tilt motor according to the drive control signal, so as to control the tilt angle state of the vibrating screen body of the rice husk machine.

[0014] The flow control circuit is used to control the operating state of the hopper motor according to the drive control signal, so as to control the opening and closing state of the hopper adjustment plate of the chaff mill.

[0015] Optionally, the screen body control circuit includes: a screen body motor and an MS300 frequency converter;

[0016] Specifically, the first end of the screen motor is connected to the L1 interface output of the MS300 frequency converter, the second end of the screen motor is connected to the L2 interface output of the MS300 frequency converter, the third end of the screen motor is connected to the L3 interface output of the MS300 frequency converter, the enable terminal of the MS300 frequency converter is connected to the RS485 interface of the S7-200 smart ST40 control chip, the L1 interface input of the MS300 frequency converter is connected to the first terminal of the three-phase power supply, the L2 interface input of the MS300 frequency converter is connected to the second terminal of the three-phase power supply, and the L3 interface input of the MS300 frequency converter is connected to the third terminal of the three-phase power supply.

[0017] Optionally, the discharge control circuit includes: a grading plate motor driver and a grading plate motor;

[0018] Specifically, the PUL+ interface of the grading board motor driver is connected to the Q0.3 interface of the S7-200 smart ST40 control chip; the DIR+ interface of the grading board motor M2 driver is connected to the Q0.6 interface of the S7-200 smart ST40 control chip; the ENA+ interface of the grading board motor driver is connected to the Q1.0 interface of the S7-200 smart ST40 control chip; the A+ interface of the grading board motor driver is connected to the first end of the grading board motor; the A- interface of the grading board motor driver is connected to the second end of the grading board motor; the B+ interface of the grading board motor driver is connected to the third end of the grading board motor; and the B- interface of the grading board motor driver is connected to the fourth end of the grading board motor.

[0019] Optionally, the tilt control circuit includes: a first contactor, a second contactor, a third contactor, a fourth contactor, and a tilt motor;

[0020] In this configuration, the first end of the coil of the first contactor is connected to the second end of the contact of the third contactor, and the second end of the coil of the first contactor is grounded. The first end of the coil of the second contactor is connected to the second end of the contact of the fourth contactor, and the second end of the coil of the second contactor is grounded. The first end of the contact of the third contactor is connected to a first power supply, and the first end of the contact of the fourth contactor is connected to the first power supply. The first end of the coil of the third contactor is connected to the Q1.3 interface of the S7-200 smart ST40 control chip, and the second end of the coil of the third contactor is connected to a second power supply. The first end of the coil of the fourth contactor is connected to the S7-200 smart... The ST40 control chip's Q1.4 interface is connected. The second end of the fourth contactor's coil is connected to the second power supply. The first end of the first contact of the first contactor is connected to the first end of the first contact of the second contactor. The second end of the first contact of the first contactor is connected to the second end of the first contact of the second contactor. The first end of the second contact of the first contactor is connected to the first end of the second contact of the second contactor. The second end of the second contact of the first contactor is connected to the second end of the third contact of the second contactor. The first end of the third contact of the first contactor is connected to the first end of the third contact of the second contactor. The second end of the third contact of the first contactor is connected to the second end of the second contact of the second contactor.

[0021] Optionally, the flow control circuit includes: a hopper motor driver and a hopper motor;

[0022] Specifically, the PUL+ interface of the hopper motor driver is connected to the Q0.3 interface of the S7-200 smart ST40 control chip; the DIR+ interface of the hopper motor driver is connected to the Q0.6 interface of the S7-200 smart ST40 control chip; the ENA+ interface of the hopper motor driver is connected to the Q1.0 interface of the S7-200 smart ST40 control chip; the A+ interface of the hopper motor driver is connected to the first end of the hopper motor; the A- interface of the hopper motor driver is connected to the second end of the hopper motor; the B+ interface of the hopper motor driver is connected to the third end of the hopper motor; and the B- interface of the hopper motor driver is connected to the fourth end of the hopper motor.

[0023] The present invention also provides a method for controlling a patina machine, characterized in that the method is used in the patina machine control circuit, and the method includes:

[0024] Upon receiving a grain separation instruction, acquire a material separation image;

[0025] The material separation image is analyzed using a preset image analysis model to obtain target material information;

[0026] Control commands are generated based on the target material information, and the operation of the chaff mill is controlled based on the control commands.

[0027] Optionally, the step of generating control instructions based on the target material information and controlling the operation of the patellar mill based on the control instructions includes:

[0028] Based on the target material information, a screen control command is generated, and the vibration frequency of the gluten mill vibrating screen is controlled based on the screen control command.

[0029] The grading plate control command is generated based on the target material information, and the position information of the grading plate at the discharge port of the huller is controlled based on the grading plate.

[0030] Based on the target material information, an inclination control command is generated, and the inclination state of the vibrating screen body of the gluten mill is controlled based on the inclination control command;

[0031] The hopper adjustment plate control command is generated based on the target material information, and the opening and closing state of the hopper adjustment plate of the grading plate is controlled based on the grading plate control command.

[0032] Optionally, the step of performing image analysis on the material separation image using a preset image analysis model to obtain target material information includes:

[0033] The material separation image is subjected to grayscale extraction to obtain a grayscale image of the material;

[0034] Image enhancement is performed on the grayscale image of the material to obtain the target material image;

[0035] The target material image is analyzed using a preset image analysis model to obtain target material information.

[0036] This invention discloses a method for acquiring a material separation image upon receiving a paddy rice separation command; analyzing the material separation image using a preset image analysis model to obtain target material information; generating control commands based on the target material information; and controlling the operation of the paddy rice machine based on the control commands. Compared with the prior art, this invention generates tilt angle control commands corresponding to the tilt angle of the screen body in the paddy rice machine, flow control commands controlling the feed speed of the hopper in the paddy rice machine, grading plate control commands controlling the grading plate at the discharge port of the paddy rice machine, and screen body control commands controlling the operating frequency of the vibrating screen body in the paddy rice machine by performing image analysis on the screen surface image of the vibrating screen body in the paddy rice machine. This enables the operation control of each stepper motor in the paddy rice machine. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of the first embodiment of the control circuit for the rice harvester of the present invention;

[0038] Figure 2 This is a schematic diagram of the second embodiment of the flow control circuit for the rice harvester of the present invention;

[0039] Figure 3 This is a circuit diagram of the second embodiment of the flow control circuit for the rice harvester of the present invention;

[0040] Figure 4 This is a flowchart illustrating the first embodiment of the tartary mill control method of the present invention;

[0041] Figure 5 This is a flowchart illustrating the second embodiment of the grain harvester control method of the present invention.

[0042] Explanation of icon numbers:

[0043] label name label name 10 Acquisition circuit 303 Screen control circuit 20 Main control circuit 304 Discharge control circuit 30 drive circuit M2 Graded plate motor 301 Tilt control circuit M3 Incline motor 302 Flow control circuit M4 Hopper motor M1 Screen motor K1~K4 First to fourth contactors

[0044] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0045] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0047] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0048] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, the user should consider such a combination of technical solutions to be non-existent and not within the scope of protection claimed by this invention.

[0049] This invention provides a control circuit for a rice harvester, referenced. Figure 1 , Figure 1 This is a schematic diagram of the structure of a first embodiment of a rice harvester control circuit according to the present invention;

[0050] This invention discloses a control circuit for a rice huller, which includes: a data acquisition circuit 10, a main control circuit 20, and a drive circuit 30, wherein the main control circuit 20 is sequentially connected to the data acquisition circuit 10 and the drive circuit 30.

[0051] It should be understood that existing paddy rice mills are purely mechanical structures. While the material separation efficiency can be improved by adjusting the feed speed of the hopper, the inclination angle of the vibrating screen, the position of the grading plate at the discharge port, and the vibration frequency of the vibrating screen, these adjustments can only be made by operators manipulating the control levers. This requires highly skilled and experienced operators who need to periodically adjust the mill to achieve optimal working efficiency.

[0052] The acquisition circuit 10 is used to acquire the screen surface signal of the vibrating screen body of the rice huller;

[0053] The main control circuit 20 is used to receive the screen surface signal and output a drive control signal according to the screen surface signal;

[0054] The drive circuit 30 is used to receive the drive control signal and control the operating state of each stepper motor according to the drive control signal.

[0055] It is understood that this embodiment discloses a control circuit for a rice huller. Based on the screen surface image on the surface of the vibrating screen body, the main control chip in the rice huller generates various control instructions for controlling the rice huller. Based on each control instruction, the actual control of the rice huller is realized. In this embodiment, the control instructions for the rice huller include tilt angle control instructions, flow control instructions, grading plate control instructions, and screen body control instructions.

[0056] The acquisition circuit 10 receives the image of the screen surface on the upper surface of the vibrating screen in the rice mill from the image acquisition device, generates a screen surface signal based on the screen surface image, and transmits it to the main control circuit 20. The main control circuit 20 generates a control command signal corresponding to the screen surface signal and outputs the control command signal to the drive circuit 30 so that the drive circuit 30 controls the running state of the stepper motor.

[0057] It is easy to understand that the screen surface image refers to the image of the material inside the vibrating screen body obtained by taking a picture of the upper surface of the vibrating screen body through an image acquisition device. In this embodiment, the image acquisition device can be a camera.

[0058] Based on the first embodiment of the control circuit for the rice huller of the present invention, a second embodiment of the control circuit for the rice huller of the present invention is proposed, with reference to... Figure 2 , Figure 3 , Figure 2 This is a schematic diagram of the second embodiment of the control circuit for the rice harvester of the present invention; Figure 3 This is a circuit diagram of the second embodiment of the control circuit for the rice harvester of the present invention.

[0059] In this embodiment, the main control circuit 20 includes an S7-200 smart ST40 control chip. The input terminal of the S7-200 smart ST40 control chip is connected to the output terminal of the acquisition circuit 10, and the output terminal of the S7-200 smart ST40 control chip is connected to the input terminal of the drive circuit 30.

[0060] It is easy to understand that after receiving the screen surface signal, the main control circuit 20 generates different drive control signals according to the screen surface signal and outputs them to each drive circuit 30 to drive each stepper motor and realize the adjustment of the corresponding motor running speed or direction.

[0061] Furthermore, the drive circuit 30 includes: an inclination control circuit 301, a flow control circuit 302, a screen control circuit 303, and a discharge control circuit 304;

[0062] The screen body control circuit 303 is used to control the operating state of the vibrating screen body motor M1 according to the drive control signal, so as to control the vibration frequency of the gluten mill vibrating screen body.

[0063] The discharge control circuit 304 is used to control the running state of the grading plate motor M2 according to the drive control signal, so as to control the position information of the grading plate at the discharge port of the chaff mill.

[0064] The tilt control circuit 301 is used to control the operating state of the tilt motor M3 according to the drive control signal, so as to control the tilt state of the vibrating screen body of the rice husk machine.

[0065] The flow control circuit 302 is used to control the operating state of the hopper motor M4 according to the drive control signal, so as to control the opening and closing state of the hopper adjustment plate of the rice huller.

[0066] In a specific implementation, the screen body control circuit 303 includes: a screen body motor M1 motor and an MS300 frequency converter;

[0067] Specifically, the first end of the screen motor M1 is connected to the output terminal of the L1 interface of the MS300 frequency converter, the second end of the screen motor M1 is connected to the output terminal of the L2 interface of the MS300 frequency converter, the third end of the screen motor M1 is connected to the output terminal of the L3 interface of the MS300 frequency converter, the enable terminal of the MS300 frequency converter is connected to the RS485 interface of the S7-200 smart ST40 control chip, the L1 interface input terminal of the MS300 frequency converter is connected to the first terminal of the three-phase power supply, the L2 interface input terminal of the MS300 frequency converter is connected to the second terminal of the three-phase power supply, and the L3 interface input terminal of the MS300 frequency converter is connected to the third terminal of the three-phase power supply.

[0068] In the specific implementation, the stepper motor that controls the vibration of the vibrating screen body is powered by a three-phase power supply, and when the enable terminal of the stepper motor driver MS300 is at a high level, MS300 is powered on and the stepper motor starts to run.

[0069] The discharge control circuit 304 includes: a driver for a grading plate motor M2 and a grading plate motor M2; wherein, the PUL+ interface of the driver for the grading plate motor M2 is connected to the Q0.3 interface of the S7-200 smart ST40 control chip, the DIR+ interface of the driver for the grading plate motor M2 is connected to the Q0.6 interface of the S7-200 smart ST40 control chip, the ENA+ interface of the driver for the grading plate motor M2 is connected to the Q1.0 interface of the S7-200 smart ST40 control chip, the A+ interface of the driver for the grading plate motor M2 is connected to the first terminal of the grading plate motor M2, the A- interface of the driver for the grading plate motor M2 is connected to the second terminal of the grading plate motor M2, the B+ interface of the driver for the grading plate motor M2 is connected to the third terminal of the grading plate motor M2, and the B- interface of the driver for the grading plate motor M2 is connected to the fourth terminal of the grading plate motor M2.

[0070] In practice, the vibrating screen may not completely screen the material during the vibrating screening process, resulting in low separation efficiency at the discharge. For example, when separating paddy rice, after separation by the paddy rice separator, brown rice, paddy rice, and a mixture of brown rice and paddy rice are obtained. At the discharge, the position of the discharge grading plate can be adjusted according to the boundary line of the three materials in the image to achieve accurate material separation and then perform secondary paddy rice separation.

[0071] The tilt control circuit 301 includes: a first contactor K1, a second contactor K2, a third contactor K3, a fourth contactor K4, and a tilt motor M3. The first end of the coil of the first contactor K1 is connected to the second end of the contact of the third contactor K3, and the second end of the coil of the first contactor K1 is grounded. The first end of the coil of the second contactor K2 is connected to the second end of the contact of the fourth contactor K4, and the second end of the coil of the second contactor K2 is grounded. The first end of the contact of the third contactor K3 is connected to a first power supply. The first end of the contact of the fourth contactor K4 is connected to the first power supply. The first end of the coil of the third contactor K3 is connected to the Q1.3 interface of the S7-200 smart ST40 control chip. The second end of the coil of the third contactor K3 is connected to a second power supply. The first end of the coil of the fourth contactor K4 is connected to the S7-200 smart... The ST40 control chip's Q1.4 interface is connected. The second end of the coil of the fourth contactor K4 is connected to the second power supply. The first end of the first contact of the first contactor K1 is connected to the first end of the first contact of the second contactor K2. The second end of the first contact of the first contactor K1 is connected to the second end of the first contact of the second contactor K2. The first end of the second contact of the first contactor K1 is connected to the first end of the second contact of the second contactor K2. The second end of the second contact of the first contactor K1 is connected to the second end of the third contact of the second contactor K2. The first end of the third contact of the first contactor K1 is connected to the first end of the third contact of the second contactor K2. The second end of the third contact of the first contactor K1 is connected to the second end of the second contact of the second contactor K2.

[0072] The flow control circuit 302 includes a hopper motor driver and a hopper motor M4; wherein, the PUL+ interface of the hopper motor driver is connected to the Q0.3 interface of the S7-200 smart ST40 control chip, the DIR+ interface of the hopper motor driver is connected to the Q0.6 interface of the S7-200 smart ST40 control chip, the ENA+ interface of the hopper motor driver is connected to the Q1.0 interface of the S7-200 smart ST40 control chip, the A+ interface of the hopper motor driver is connected to the first terminal of the hopper motor M4, the A- interface of the hopper motor driver is connected to the second terminal of the hopper motor M4, the B+ interface of the hopper motor driver is connected to the third terminal of the hopper motor M4, and the B- interface of the hopper motor driver is connected to the fourth terminal of the hopper motor M4.

[0073] This invention also provides a method for controlling a rice huller, referring to... Figure 4 , Figure 4 This is a flowchart illustrating the first embodiment of a rice huller control method according to the present invention.

[0074] In this embodiment, the huller control method includes the following steps:

[0075] Step S10: Upon receiving the grain separation instruction, acquire a material separation image.

[0076] It should be noted that the execution subject of the method in this embodiment can be a rice huller control device. The rice huller control device can be the control chip of the rice huller, or other devices with the same or similar functions, such as an external control computer. This embodiment does not impose specific limitations on this. In this embodiment and the following embodiments, the control chip in the rice huller will be used as an example for explanation.

[0077] It is worth noting that the rice-brown separation command can be a start command for the operation of the rice-brown machine, where the rice-brown machine refers to a rice-brown separator used to separate the rice and other grains to obtain brown rice; and the start command can be a control command input by the user to control the operating status of the rice-brown machine.

[0078] It should be understood that the vibrating screen body refers to the structural device in the rice huller used to vibrate and separate the added materials. In this embodiment, the rice huller has two symmetrical vibrating screen bodies, which can increase the amount of separated materials, ensure the stability of the machine during vibration separation, and allow the material separation situation inside the screen body to be observed through the upper surface of the vibrating screen body.

[0079] It is understood that the screen surface image refers to the image of the material inside the vibrating screen body obtained by taking a picture of the upper surface of the vibrating screen body through an image acquisition device. The image acquisition device can be an electronic device such as a camera, or other devices with image acquisition function. This embodiment does not make specific limitations on this.

[0080] Furthermore, since the rice milling machine in this embodiment has two symmetrical vibrating screens, two cameras can be installed simultaneously to capture images of the two vibrating screens, thereby improving the image resolution and making the captured images more accurate.

[0081] In practice, when image acquisition is required, the screen plate on the upper surface of the vibrating screen can be removed so that the camera can directly observe the image of the material inside the screen through the upper surface of the vibrating screen.

[0082] Step S20: Perform image analysis on the material separation image using a preset image analysis model to obtain target material information.

[0083] It is worth noting that the preset image analysis model performs image analysis on the screen surface images acquired by the image acquisition device to obtain material information within the vibrating screen. The target material information can include the material separation ratio and separation effect within the vibrating screen. In the actual material separation process, due to the large amount of material vibrating at one time, and before the material within the screen is completely separated, new material to be screened may be added, leading to material mixing. Therefore, within the vibrating screen, taking rice as an example, there may be a mixture of rice, separated brown rice, and incompletely separated material. Thus, it is necessary to perform image analysis on the acquired screen surface images to obtain the required material separation information or material separation ratio, etc. The material separation ratio and separation effect can both be obtained through image analysis.

[0084] It is understood that the preset image analysis model can be a model generated based on vision technology and its algorithms, used for image analysis of the sieve surface image, and this embodiment does not impose specific limitations on it.

[0085] Further, step S20 includes:

[0086] The grayscale image of the sieve surface is extracted to obtain a grayscale image of the sieve surface;

[0087] Image enhancement is performed on the grayscale image of the sieve surface to obtain the target sieve surface image;

[0088] The target screen image is analyzed using a preset image analysis model to obtain target material information.

[0089] It should be noted that a sieve surface grayscale image refers to extracting grayscale values ​​from a sieve surface image so that all pixels in the sieve surface image are converted into a sampled color. Through the sieve surface grayscale image, the proportions of rice, brown rice, and mixtures can be observed more clearly, improving the accuracy of image analysis.

[0090] It should be understood that the target screen image refers to the screen image obtained after image enhancement of the screen grayscale image. The image enhancement process mainly includes binarization, image sharpness enhancement, image smoothness enhancement, and image edge detection.

[0091] Step S30: Generate control instructions based on the target material information, and control the operation of the chaff mill based on the control instructions.

[0092] It is worth noting that, in this embodiment, improving the rice-roasting machine's rice-roasting separation efficiency can be achieved by changing the rice-roasting machine's hopper feed speed, the inclination angle of the vibrating screen, the position of the grading plate at the discharge port, and the vibration frequency of the vibrating screen. Therefore, in this embodiment, there are four types of control commands: inclination angle control command, flow rate control command, grading plate control command, and screen body control command.

[0093] This embodiment discloses a method for acquiring a material separation image upon receiving a paddy rice separation command; performing image analysis on the material separation image using a preset image analysis model to obtain target material information; generating control commands based on the target material information; and controlling the operation of the paddy rice machine based on the control commands. This embodiment generates tilt angle control commands corresponding to the tilt angle of the screen body in the paddy rice machine, flow control commands controlling the feed speed of the hopper, grading plate control commands controlling the grading plate at the discharge port, and screen body control commands controlling the operating frequency of the vibrating screen body in the paddy rice machine, thereby achieving operation control of each stepper motor in the paddy rice machine.

[0094] refer to Figure 5 , Figure 5 This is a flowchart illustrating a second embodiment of a grain processing machine control method according to the present invention.

[0095] Based on the first embodiment described above, a second embodiment of the huller control method of the present invention is proposed. In this embodiment, step S30 includes:

[0096] Step S301: Generate screen control instructions based on the target material information, and control the vibration frequency of the gluten mill vibrating screen based on the screen control instructions.

[0097] It should be noted that the vibration frequency of the huller vibrating screen body refers to the vibration frequency of the two huller vibrating screen bodies of the huller. In this embodiment, the two huller vibrating screen bodies of the huller have the same vibration frequency.

[0098] Step S302: Generate grading plate control instructions based on the target material information, and control the position information of the grading plate at the discharge port of the chaff mill based on the grading plate.

[0099] Step S303: Generate tilt angle control command based on the target material information, and control the tilt angle state of the gluten mill vibrating screen body based on the tilt angle control command.

[0100] It is worth noting that the tilt angle of the vibrating screen is determined based on the separation effect of the rice huller on the material and the current material flow rate in the rice huller. In order to balance the influence of the separation effect and the current material flow rate on the tilt angle of the rice huller, the material flow rate information and the material separation efficiency can be used to generate tilt angle control parameters through a preset weighting ratio; and tilt angle control commands are generated according to the tilt angle control parameters and the material flow rate information.

[0101] It should be understood that the preset weight ratio refers to the influence of material flow information and material separation efficiency on the efficiency of the paddy rice mill in separating paddy into brown rice. In this embodiment, the weight ratio of material flow information and material separation efficiency can be set by the user, and this embodiment does not impose specific restrictions on this.

[0102] In addition, the tilt angle control parameter refers to the degree of influence of the tilt angle of the rice huller on the efficiency of separating paddy rice into brown rice. In actual operation, the tilt angle control parameter has a maximum value. When the working efficiency of the rice huller reaches the optimal level, the tilt angle control parameter takes the maximum value.

[0103] Furthermore, in order to accurately generate instructions for adjusting the tilt angle of the huller, the step of generating tilt angle control instructions based on the tilt angle control parameters and the material flow rate information includes:

[0104] When the tilt angle control parameter is less than a preset threshold, and when the material flow rate information is greater than a preset flow rate threshold, the tilt angle control command is to reduce the tilt angle of the target screen body;

[0105] When the tilt angle control parameter is less than a preset threshold, and when the material flow rate information is less than a preset flow rate threshold, the tilt angle control command is to increase the tilt angle of the target screen body.

[0106] It is easy to understand that the preset threshold refers to the maximum value of the tilt angle control parameter, that is, the tilt angle at which the patellar mill achieves optimal working efficiency; the preset flow rate threshold is used to determine the amount of material that the patellar mill vibrating screen can separate with optimal efficiency.

[0107] In practice, when the tilt angle control parameter is less than the optimal tilt angle, if the material flow rate information is greater than the preset flow rate threshold, the tilt angle of the vibrating screen can be reduced; if the material flow rate information is less than the preset flow rate threshold, the tilt angle of the vibrating screen can be increased.

[0108] Step S304: Generate a hopper adjustment plate control command based on the target material information, and control the opening and closing state of the hopper adjustment plate of the grading plate based on the grading plate control command.

[0109] In practice, in order to improve the operating efficiency of the rice huller and optimize the separation rate and material separation efficiency, the material flow rate at the rice huller inlet can be controlled by adjusting the opening and closing of the hopper regulating plate.

[0110] The opening and closing state of the hopper regulating plate is related to the material separation efficiency and material separation rate of the patellar mill. The separation rate of the patellar mill and the material separation efficiency can be used to generate flow control parameters through a preset weighting ratio. Control commands for the hopper regulating plate are generated based on the flow control parameters.

[0111] It should be noted that the preset weight ratio refers to the influence of the rice-brown mill separation rate and material separation efficiency on the efficiency of the rice-brown mill in separating paddy into brown rice. In this embodiment, the weight ratio of the rice-brown mill separation rate to the material separation efficiency can be 4:6, and this embodiment does not impose any specific restrictions on this.

[0112] It is easy to understand that the flow control parameter is used to quantify the efficiency of the rice huller in separating paddy into brown rice. In actual operation, the flow control parameter has a maximum value. The flow control parameter takes the maximum value when the rice huller can achieve the optimal working efficiency.

[0113] This embodiment discloses generating screen control commands based on the target material information, and controlling the vibration frequency of the vibrating screen of the rice huller based on the screen control commands; generating grading plate control commands based on the target material information, and controlling the position information of the grading plate at the rice huller outlet based on the grading plate; generating tilt angle control commands based on the target material information, and controlling the tilt angle state of the vibrating screen of the rice huller based on the tilt angle control commands; generating hopper adjustment plate control commands based on the target material information, and controlling the opening and closing state of the hopper adjustment plate of the rice huller based on the grading plate control commands. This embodiment generates control commands for each stepper motor based on the separation effect, separation rate, separation efficiency, and flow rate information obtained from the rice huller screen surface image analysis, thereby realizing the control of the rice huller.

[0114] It should be understood that the above are merely illustrative examples and do not constitute any limitation on the technical solutions of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any restrictions on this.

[0115] It should be noted that the workflow described above is merely illustrative and does not limit the scope of protection of this invention. In practical applications, those skilled in the art can select some or all of the workflow to achieve the purpose of this embodiment according to actual needs, and no restrictions are imposed here.

[0116] In addition, for technical details not described in detail in this embodiment, please refer to the rice huller control method provided in any embodiment of the present invention, which will not be repeated here.

[0117] Furthermore, it should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0118] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0119] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as read-only memory (ROM) / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0120] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A control circuit for a rice harvester, characterized in that, The control circuit of the rice harvester includes: a data acquisition circuit, a main control circuit, and a drive circuit, wherein the main control circuit is connected to the data acquisition circuit and the drive circuit in sequence. The acquisition circuit is used to acquire images of the surface of the vibrating screen body through an image acquisition device, and analyze the material flow information, material separation efficiency and material separation rate inside the vibrating screen body based on the images to generate the screen surface signal of the rice huller vibrating screen body. The main control circuit is used to receive the screen surface signal and output a drive control signal according to the screen surface signal; The drive circuit is used to receive the drive control signal and control the operating state of each stepper motor according to the drive control signal. The drive circuit includes: tilt angle control circuit, flow control circuit, screen body control circuit and discharge control circuit; The screen body control circuit is used to control the operating state of the vibrating screen body motor according to the drive control signal, so as to control the vibration frequency of the gluten mill vibrating screen body. The discharge control circuit is used to control the operating state of the grading plate motor according to the drive control signal, so as to control the position information of the grading plate at the discharge port of the chaff mill. The tilt control circuit is used to control the operating state of the tilt motor according to the drive control signal, so as to control the tilt angle state of the vibrating screen body of the rice husk machine. The flow control circuit is used to control the operating state of the hopper motor according to the drive control signal, so as to control the opening and closing state of the hopper adjustment plate of the chaff mill.

2. The control circuit for the rice harvester as described in claim 1, characterized in that, The main control circuit includes an S7-200 smartST40 control chip. The input terminal of the S7-200 smartST40 control chip is connected to the output terminal of the acquisition circuit, and the output terminal of the S7-200 smartST40 control chip is connected to the input terminal of the drive circuit.

3. The control circuit for the rice harvester as described in claim 1, characterized in that, The screen control circuit includes: a screen motor and an MS300 frequency converter; Specifically, the first end of the screen motor is connected to the L1 interface output of the MS300 frequency converter, the second end of the screen motor is connected to the L2 interface output of the MS300 frequency converter, the third end of the screen motor is connected to the L3 interface output of the MS300 frequency converter, the enable terminal of the MS300 frequency converter is connected to the RS485 interface of the S7-200 smart ST40 control chip, the L1 interface input of the MS300 frequency converter is connected to the first terminal of the three-phase power supply, the L2 interface input of the MS300 frequency converter is connected to the second terminal of the three-phase power supply, and the L3 interface input of the MS300 frequency converter is connected to the third terminal of the three-phase power supply.

4. The control circuit for the rice harvester as described in claim 3, characterized in that, The discharge control circuit includes: a grading plate motor driver and a grading plate motor; Specifically, the PUL+ interface of the grading board motor driver is connected to the Q0.3 interface of the S7-200 smart ST40 control chip; the DIR+ interface of the grading board motor driver is connected to the Q0.6 interface of the S7-200 smart ST40 control chip; the ENA+ interface of the grading board motor driver is connected to the Q1.0 interface of the S7-200 smart ST40 control chip; the A+ interface of the grading board motor driver is connected to the first end of the grading board motor; the A- interface of the grading board motor driver is connected to the second end of the grading board motor; the B+ interface of the grading board motor driver is connected to the third end of the grading board motor; and the B- interface of the grading board motor driver is connected to the fourth end of the grading board motor.

5. The control circuit for the rice harvester as described in claim 4, characterized in that, The tilt control circuit includes: a first contactor, a second contactor, a third contactor, a fourth contactor, and a tilt motor; In this configuration, the first end of the coil of the first contactor is connected to the second end of the contact of the third contactor, and the second end of the coil of the first contactor is grounded. The first end of the coil of the second contactor is connected to the second end of the contact of the fourth contactor, and the second end of the coil of the second contactor is grounded. The first end of the contact of the third contactor is connected to a first power supply, and the first end of the contact of the fourth contactor is connected to the first power supply. The first end of the coil of the third contactor is connected to the Q1.3 interface of the S7-200 smart ST40 control chip, and the second end of the coil of the third contactor is connected to a second power supply. The first end of the coil of the fourth contactor is connected to the S7-200 smart... The ST40 control chip's Q1.4 interface is connected. The second end of the fourth contactor's coil is connected to the second power supply. The first end of the first contact of the first contactor is connected to the first end of the first contact of the second contactor. The second end of the first contact of the first contactor is connected to the second end of the first contact of the second contactor. The first end of the second contact of the first contactor is connected to the first end of the second contact of the second contactor. The second end of the second contact of the first contactor is connected to the second end of the third contact of the second contactor. The first end of the third contact of the first contactor is connected to the first end of the third contact of the second contactor. The second end of the third contact of the first contactor is connected to the second end of the second contact of the second contactor.

6. The control circuit for the rice harvester as described in claim 5, characterized in that, The flow control circuit includes: a hopper motor driver and a hopper motor; Specifically, the PUL+ interface of the hopper motor driver is connected to the Q0.3 interface of the S7-200 smart ST40 control chip; the DIR+ interface of the hopper motor driver is connected to the Q0.6 interface of the S7-200 smart ST40 control chip; the ENA+ interface of the hopper motor driver is connected to the Q1.0 interface of the S7-200 smart ST40 control chip; the A+ interface of the hopper motor driver is connected to the first end of the hopper motor; the A- interface of the hopper motor driver is connected to the second end of the hopper motor; the B+ interface of the hopper motor driver is connected to the third end of the hopper motor; and the B- interface of the hopper motor driver is connected to the fourth end of the hopper motor.

7. A method for controlling a rice harvester, characterized in that, The patty machine control method is used in the patty machine control circuit according to any one of claims 1-6, and the patty machine control method includes: Upon receiving a grain separation instruction, acquire a material separation image; The material separation image is analyzed using a preset image analysis model to obtain target material information, which includes material flow information, material separation efficiency, and material separation rate. Control commands are generated based on the target material information, and the operation of the huller is controlled based on the control commands. The step of generating control commands based on the target material information and controlling the operation of the chaff mill based on the control commands includes: Based on the target material information, a screen control command is generated, and the vibration frequency of the gluten mill vibrating screen is controlled based on the screen control command. The grading plate control command is generated based on the target material information, and the position information of the grading plate at the discharge port of the huller is controlled based on the grading plate. Inclination control parameters are generated based on the material flow rate information, the material separation efficiency, and a preset first weight ratio. Inclination control commands are generated based on the inclination control parameters and the material flow rate information. The inclination state of the vibrating screen body of the rice husk machine is controlled based on the inclination control commands. The preset first weight ratio refers to the weight ratio between the material flow rate information and the material separation efficiency. Flow control parameters are generated based on the material separation efficiency, the material separation rate, and a preset second weighting ratio. A hopper adjustment plate control command is generated based on the flow control parameters. The opening and closing state of the hopper adjustment plate of the rice mill is controlled based on the hopper adjustment plate control command. The preset second weighting ratio refers to the weighting ratio of the material separation rate to the material separation efficiency.

8. The rice harvester control method as described in claim 7, characterized in that, The step of performing image analysis on the separated material image using a preset image analysis model to obtain target material information includes: The material separation image is subjected to grayscale extraction to obtain a grayscale image of the material; Image enhancement is performed on the grayscale image of the material to obtain the target material image; The target material image is analyzed using a preset image analysis model to obtain target material information.

Images