A soil hardness measurement feedback method and measurement device

Abstract

The application discloses a kind of soil hardness measurement feedback method and measuring device, it is related to agricultural machinery technical field, comprising the following steps: S1, given pressure P1 is applied to measuring wheel;S2, the angle a between measuring wheel and soil is measured by angle sensor being arranged at the hinge of measuring wheel;S3, real-time soil hardness H is judged by the functional relationship between P1 and angle a;S4, controller adjusts the pressure P2 of sowing monomer according to real-time soil hardness H.The application adopts the above-mentioned soil hardness measurement feedback method and measuring device, the hardness information of soil is measured and detected, the pressure size of sowing monomer is controlled in real time, to ensure the consistency of sowing depth, significantly improve the uniformity of seed emergence, to improve yield;By setting active telescopic device, the size and stability of the pressure are improved;By setting hydraulic distribution valve, the uniformity and stability of pressure applied to each row are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a method and device for measuring soil hardness. Background Technology

[0002] During seeding with a seeder, due to inconsistent soil hardness, it is impossible to guarantee consistent sowing depth when the same downward pressure is applied, thus failing to effectively ensure uniform seedling emergence and resulting in reduced yield. There is a pressing need in the current technology for a soil hardness measurement feedback method and device to ensure consistent sowing depth. Summary of the Invention

[0003] The purpose of this invention is to provide a soil hardness measurement feedback method and measuring device to solve the problem of inconsistent sowing depth during the sowing process of existing seeders.

[0004] To achieve the above objectives, the present invention provides a soil hardness measurement feedback method, comprising the following steps: S1. Apply the same given pressure P1 to the measuring wheel and the working wheel; S2. The angle α between the measuring wheel and the soil is measured by an angle sensor installed at the hinge of the measuring wheel. S3. The angle b between the workpiece and the soil is measured by an angle sensor installed at the hinge of the workpiece wheel; S4. Determine the real-time soil hardness H by the functional relationship between angles a and b; the controller adjusts the downward pressure P2 of the seed unit according to the real-time soil hardness H.

[0005] Preferably, in S4, the controller is electrically connected to the display screen, which displays the values ​​of the given pressure P1, real-time soil hardness H, pressure P2 under the seed unit, and the number of rows of the seed unit.

[0006] A soil hardness measuring device includes a seed unit, a measuring wheel, and a working wheel. The working wheel is located at the rear end of the measuring wheel. The measuring wheel and the working wheel are connected to the seed unit via a connecting rod. The seed unit has a parallel four-bar linkage structure.

[0007] Preferably, the seeding unit is equipped with an active telescopic device, which is connected to a hydraulic distribution valve via a pipeline. The active telescopic devices installed on different seeding units are all connected to the hydraulic distribution valve, which is installed on the frame of the seeder.

[0008] Preferably, a camera is installed on the seeding unit, which is positioned directly facing the working wheel. The camera captures the working wheel's operation in real time and transmits the images to the display screen.

[0009] Preferably, the cross-section of the measuring wheel is set to a V-shaped structure.

[0010] Preferably, the end of the seeding unit is equipped with a handheld terminal, which is connected to the display screen and wirelessly communicates with the controller.

[0011] Preferably, the active telescopic device is a hydraulic cylinder.

[0012] Therefore, the present invention employs the above-mentioned soil hardness measurement feedback method and measuring device, which measures and detects soil hardness information to control the downward pressure of individual seedlings in real time, thereby ensuring the consistency of sowing depth, significantly improving the uniformity of seed emergence, and thus increasing yield.

[0013] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an embodiment of a soil hardness measuring device according to the present invention; Figure 2 This is a force analysis diagram of an embodiment of the soil hardness measuring device of the present invention; Figure Labels 1. Measuring wheel, 2. Working wheel, 3. Parallel four-bar linkage, 4. Active telescopic device. Detailed Implementation

[0015] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0017] Example Please see Figures 1-2 This invention provides a soil hardness measurement feedback method and measuring device, comprising the following steps: S1. Apply the same given pressure P1 to the measuring wheel and the working wheel; S2. The angle α between the measuring wheel and the soil is measured by an angle sensor installed at the hinge of the measuring wheel. S3. The angle b between the workpiece and the soil is measured by an angle sensor installed at the hinge of the workpiece wheel; S4. Determine the real-time soil hardness H by the functional relationship between angles a and b; the controller adjusts the downward pressure P2 of the seed unit according to the real-time soil hardness H.

[0018] By measuring and detecting soil hardness information, the downward pressure of each seedling is controlled in real time, thereby ensuring the consistency of sowing depth, significantly improving seed emergence uniformity, and thus increasing yield.

[0019] The controller is a microcontroller, electrically connected to a display screen. The display screen shows the values ​​of the given pressure P1, real-time soil hardness H, and the pressure P2 of each seed unit. It can also display the number of rows planted per seed unit. Using a microcontroller significantly reduces manufacturing costs; the display screen enables real-time data monitoring.

[0020] It also includes a GPS module, which is electrically connected to the controller and records the overall soil hardness information of the entire plot based on the navigation data from the GPS module.

[0021] A soil hardness measuring device includes a seed unit, a measuring wheel 1, and a working wheel 2. The working wheel 2 is located at the rear end of the measuring wheel 1. The measuring wheel 1 and the working wheel 2 are connected to the seed unit via a connecting rod. The seed unit has a parallel four-bar linkage 3 structure. The measuring wheel 1 is located in front of the parallel four-bar linkage 3 structure, and the working wheel 2 is located behind the parallel four-bar linkage 3 structure. The parallel four-bar linkage 3 structure of the seed unit ensures an effective contouring effect.

[0022] Each seeding unit is equipped with an active telescopic device 4, which is a hydraulic cylinder. The active telescopic device 4 is connected to a hydraulic distribution valve via pipeline. Each active telescopic device 4, located on different seeding units, is connected to the hydraulic distribution valve. Each seeding unit has one hydraulic cylinder, and the hydraulic distribution valve is mounted on the seeder frame. The active telescopic device 4 significantly improves the magnitude and stability of the downward pressure; the hydraulic distribution valve ensures the uniformity and stability of the pressure applied to each row.

[0023] A camera is installed on the seeding unit, mounted on the parallel four-bar linkage 3, and positioned directly in front of the working wheel 2. The camera captures the working status of the working wheel 2 in real time and transmits the images to the display screen. The camera setup effectively achieves good observation results.

[0024] The cross-section of the measuring wheel is designed with a V-shape to facilitate its penetration into the soil, thereby increasing its cutting force. The measuring wheel 1 is hinged to the seed unit, and the angle sensor is mounted on the hinge shaft of the measuring wheel 1.

[0025] A handheld terminal is installed at the end of the seeding unit. The handheld terminal is connected to the display screen and wirelessly communicates with the controller. The handheld terminal is used to display the values ​​of the given pressure P1, the real-time soil hardness H, and the pressure P2 of the seeding unit. At the same time, the display screen can also display the number of rows of seeding unit operation. By setting up the handheld terminal, convenient display of data interaction is realized.

[0026] Therefore, the present invention adopts the above-mentioned soil hardness measurement feedback method and measuring device, which measures and detects soil hardness information to control the downward pressure of individual seedlings in real time, thereby ensuring the consistency of sowing depth, significantly improving the uniformity of seed emergence, and thus increasing yield; by setting an active telescopic device, the magnitude and stability of the downward pressure are improved; by setting a hydraulic distribution valve, the uniformity and stability of the pressure applied to each row are ensured.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for measuring and feeding back soil hardness, characterized in that: Includes the following steps: S1. Apply the same given pressure P1 to the measuring wheel and the working wheel; S2. The angle α between the measuring wheel and the soil is measured by an angle sensor installed at the hinge of the measuring wheel. S3. The angle b between the workpiece and the soil is measured using an angle sensor installed at the hinge of the workpiece wheel; S4. Determine the real-time soil hardness H by the functional relationship between angles a and b; the controller adjusts the downward pressure P2 of the seed unit according to the real-time soil hardness H.

2. The soil hardness measurement feedback method according to claim 1, characterized in that: In S4, the controller is electrically connected to the display screen, which displays the given pressure P1, real-time soil hardness H, the value of the pressure P2 under the seed unit, and the number of rows of the seed unit.

3. A soil hardness measuring device, employing the soil hardness measurement feedback method according to any one of claims 1-2, characterized in that: It includes a seeding unit, a measuring wheel, and a working wheel. The working wheel is located at the rear end of the measuring wheel. The measuring wheel and the working wheel are connected to the seeding unit through a connecting rod. The seeding unit has a parallel four-bar linkage structure.

4. The soil hardness measuring device according to claim 3, characterized in that: Each seeding unit is equipped with an active telescopic device, which is connected to a hydraulic distribution valve via a pipeline. The active telescopic devices installed on different seeding units are all connected to the hydraulic distribution valve, which is mounted on the frame of the seeder.

5. A soil hardness measuring device according to claim 4, characterized in that: A camera is installed on the seeding unit, facing the working wheel. The camera captures the working wheel's operation in real time and transmits the images to the display screen.

6. A soil hardness measuring device according to claim 5, characterized in that: The cross-section of the measuring wheel is designed with a V-shape.

7. A soil hardness measuring device according to claim 6, characterized in that: The end of the seeding unit is equipped with a handheld terminal, which is connected to the display screen and wirelessly communicates with the controller.

8. A soil hardness measuring device according to claim 7, characterized in that: The active telescopic device is a hydraulic cylinder.

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