Strip pesticide applying device in protective farming mode

Abstract

The utility model discloses a strip pesticide application device in a protective farming mode, belongs to the field of agricultural precise pesticide application, and aims at solving the problem that a pesticide application device of a traditional plant protection machine is not suitable for being used in the protective farming mode. The device comprises a single-chip microcomputer system, a nozzle moving mechanism, a position sensor and a moving system power supply loop. A position sensor is arranged in each nozzle moving mechanism, the output end of the position sensor is connected with the input end of the single chip microcomputer system, the output end of the single chip microcomputer system is connected with the driving instruction input end of the nozzle moving mechanism, and the nozzle moving mechanism carries the nozzle to move towards a target position; the moving system power supply loop provides working power for the single-chip microcomputer system, the spray head moving mechanism and the position sensor.

Description

Technical Field

[0001] This utility model relates to a strip spraying device in a conservation tillage mode, belonging to the field of precision agricultural spraying. Background Technology

[0002] In recent years, to protect black soil and reduce its loss, the state has vigorously promoted conservation tillage technology. Conservation tillage is a modern farming system that primarily involves returning crop straw to the field as mulch and no-till (or reduced-till) planting. It effectively reduces soil erosion by wind and water, increases soil fertility and moisture retention, and improves agricultural ecological and economic benefits. It firmly grasps the core technical requirement of "more mulch, less soil disturbance," striving to increase straw mulch and reduce soil disturbance while ensuring stable and high grain yields.

[0003] Straw row mulching, as an important model in conservation tillage, is gradually being widely adopted. Straw row mulching refers to the process of arranging surface straw into rows, using narrow rows for sowing, and wide rows for straw mulching.

[0004] However, the spraying methods of traditional plant protection machinery cannot be directly applied to farmland under conservation tillage. Traditional machinery has uniformly distributed nozzles fixed to the supply pipe, and the nozzle positions cannot be adjusted. Under conservation tillage, this results in the pesticide being sprayed evenly across the surface, including areas covered by straw. Because the straw cannot contact the soil, the pesticide cannot achieve its intended effect, leading to waste and environmental pollution.

[0005] Therefore, plant protection machinery in conservation tillage models needs to be equipped with precision application devices to achieve the safe, rational and efficient use of pesticides, which can effectively prevent and control crop diseases and pests, and reduce the pollution of pesticide residues to the environment. Utility Model Content

[0006] To address the problem that traditional plant protection machinery spraying devices are not suitable for use in conservation tillage, this invention provides a strip spraying device for conservation tillage.

[0007] The present invention discloses a strip spraying device under a conservation tillage mode, comprising a microcontroller system, a nozzle moving mechanism, a position sensor 1, and a power supply circuit for the moving system. Each nozzle moving mechanism has a position sensor 1, the output of which is connected to the input of the microcontroller system. The output of the microcontroller system is connected to the drive command input of the nozzle moving mechanism, which carries the nozzle to the target position. The power supply circuit for the moving system provides operating power to the microcontroller system, the nozzle moving mechanism, and the position sensor 1.

[0008] Preferably, the nozzle moving mechanism includes a lead screw guide rail 2, a lead screw 3, a nozzle clamp 4, a lead screw slide 5, a stepper motor 6, and a stepper motor driver 7. The nozzle 8 is fixed to the nozzle clamp 4 by bolts, and the nozzle clamp 4 is mounted on the lead screw slide 5 by bolts. The lead screw slide 5 is mounted on the lead screw 3 by internal thread and external thread engagement. The lead screw slide 5 is mounted on the lead screw guide rail 2 and is supported and slid by the lead screw guide rail 2. The movement of the lead screw slide 5 is driven by the rotation of the lead screw 3, and the rotation of the lead screw 3 is driven by the rotation of the stepper motor 6. The start, stop, and rotation direction of the stepper motor 6 are controlled by the stepper motor driver 7.

[0009] Position sensor 1 is mounted on lead screw guide rail 2, and lead screw slide 5 can carry nozzle 8 to position sensor 1.

[0010] Preferably, the microcontroller system is built using an STM32F103C8T6 microcontroller.

[0011] Preferably, position sensor 1 is a position sensor of model SN04-N.

[0012] Preferably, the stepper motor driver 7 is a stepper motor driver of model TB6600.

[0013] The beneficial effects of this utility model are:

[0014] To address the problem of fixed and non-adjustable nozzles in traditional plant protection machinery, this invention designs a strip spraying device suitable for conservation tillage, aiming to improve the accuracy and effectiveness of spraying, reduce pesticide waste, and minimize environmental impact.

[0015] This invention uses a position sensor to provide real-time feedback and adjust the nozzle position, accurately positioning the nozzle's movement and improving its efficiency and accuracy. This application enables the nozzle to move within a target area according to a predetermined trajectory or requirement, achieving better spraying results and providing strong support for precise pesticide application, pesticide conservation, and sustainable development. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a strip spraying device under a conservation tillage mode as described in this utility model;

[0017] Figure 2 This is a schematic diagram of the nozzle moving mechanism;

[0018] Figure 3 This is the circuit diagram for the TB6600 stepper motor driver;

[0019] Figure 4 This is a schematic diagram of a position sensor;

[0020] Figure 5 This is a schematic diagram of the device of this utility model being used in field operations;

[0021] Figure 6 This is a schematic diagram of strip application using the device of this utility model;

[0022] Figure 7 This is a schematic diagram of traditional full-coverage pesticide application under conservation tillage.

[0023] Figure label:

[0024] 1. Position sensor; 2. Lead screw guide rail; 3. Lead screw; 4. Nozzle clamp; 5. Lead screw slide; 6. Stepper motor;

[0025] 7. TB6600 stepper motor driver; 8. Spray nozzle;

[0026] 11. Plant protection machine; 12. Sprayer rack; 13. Straw row; 14. Seedling strip. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0030] Specific Implementation Method 1: The following is combined with... Figures 1 to 6This embodiment describes a strip spraying device for conservation tillage, comprising an external communication interface, a microcontroller system, a nozzle moving mechanism, a position sensor 1, and a power supply circuit for the moving system. Each nozzle moving mechanism includes a position sensor 1, which is used to locate the nozzle 8 at its origin. The distance of the nozzle 8 relative to the origin is defined as its position coordinates. The position coordinates received by the microcontroller system through the external communication interface can be used to adjust the position of the nozzle 8. The output of the external communication interface is connected to the input of the microcontroller system, the output of the position sensor 1 is connected to the input of the microcontroller system, and the output of the microcontroller system is connected to the drive command input of the nozzle moving mechanism. The nozzle moving mechanism carries the nozzle to the target position. The power supply circuit for the moving system provides operating power to the microcontroller system, the nozzle moving mechanism, and the position sensor 1.

[0031] The nozzle moving mechanism includes a lead screw guide rail 2, a lead screw 3, a nozzle clamp 4, a lead screw slide 5, a stepper motor 6, and a stepper motor driver 7. The nozzle 8 is fixed to the nozzle clamp 4 by bolts. The nozzle clamp 4 is mounted on the lead screw slide 5 by bolts. The lead screw slide 5 is mounted on the lead screw 3 through an internal thread and an external thread engagement. The lead screw slide 5 is mounted on the lead screw guide rail 2 and is supported and slid by the lead screw guide rail 2. The movement of the lead screw slide 5 is driven by the rotation of the lead screw 3. The rotation of the lead screw 3 is driven by the rotation of the stepper motor 6. The start, stop, and rotation direction of the stepper motor 6 are controlled by the stepper motor driver 7.

[0032] Position sensor 1 is mounted on lead screw guide rail 2. When lead screw slide 5 moves to this point, it marks this point as the coordinate origin for nozzle 8 origin positioning. When lead screw slide 5 moves to this point, the voltage of position sensor 1 changes and is fed back to the microcontroller system to indicate that the nozzle has moved to the coordinate origin, at which point the nozzle coordinate is 0. The distance of nozzle 8 relative to the origin is defined as the current position coordinate of nozzle 8. The microcontroller system receives its current position coordinates through the external communication interface and adjusts the position of nozzle 8 accordingly to ensure that nozzle 8 corresponds with the strip and sprays accurately.

[0033] The microcontroller system is built using the STM32F103C8T6 microcontroller.

[0034] Position sensor 1 is a position sensor with model number SN04-N.

[0035] The stepper motor driver 7 uses a stepper motor driver of model TB6600.

[0036] This invention determines the target position of the nozzle for strip spraying according to its actual size. The microcontroller system is connected to the TB6600 stepper motor driver and the SN04-N position sensor of the nozzle moving mechanism via DuPont wires. The microcontroller system, the nozzle moving mechanism, and the position sensor are all connected to the power supply circuit of the moving system via wires. The SN04-N position sensor is used for nozzle position initialization, origin calibration, nozzle position coordinate feedback adjustment, etc.

[0037] Furthermore, such as Figure 3 The TB6600 stepper motor driver shown uses a common cathode connection. The PUL-, DIR-, and ENA- ports of the TB6600 stepper motor driver are connected together with a single wire to the negative terminal of the STM32F103C8T6 microcontroller. The A1 port of the STM32F103C8T6 is connected to the PUL+ port of the TB6600 stepper motor driver; A1 is the PWM output port of the STM32F103C8T6. The A2 port of the STM32F103C8T6 is connected to the DIR+ port of the TB6600 stepper motor driver. Used to control the rotation direction of stepper motor 6; the A3 port of STM32F103C8T6 is connected to the ENA+ port of TB6600 stepper motor driver, enabling stepper motor 6 to rotate. Stepper motor 6 has four interfaces: red, yellow, blue, and green. The wiring method for stepper motor 6 is as follows: the red port is connected to the A+ port of TB6600 stepper motor driver, the green port is connected to the A- port of TB6600 stepper motor driver, the yellow port is connected to the B+ port of TB6600 stepper motor driver, and the blue port is connected to the B- port of TB6600 stepper motor driver.

[0038] Furthermore, such as Figure 4 The SN04-N position sensor shown has three wiring ports: brown, blue, and black. The brown port is connected to the positive terminal of a 24V DC power supply, and the blue port is connected to the negative terminal of a 24V DC power supply, in series with resistors R1 and R2, and then connected to the black port. Because the operating voltage of the SN04-N position sensor exceeds the rated operating voltage of the STM32F103C8T6, the STM32F103C8T6 is used to measure the voltage value of resistor R2 to determine whether the lead screw slide 5 has reached the specified position.

[0039] Furthermore, such as Figure 5 and Figure 6As shown, during actual field operations, the nozzle moving mechanism and the microcontroller system are installed on the spraying frame 12. During field operations in the conservation tillage mode, the wheels of the plant protection machine 11 press on the straw row 13, and corn seedlings are planted on the seedling belt 14. The plant protection machine 11 moves forward, driving the spraying frame 12 to move in the field. The microcontroller system receives the coordinates of the center point of the seedling on 14 through the external communication interface. After processing the received data, the microcontroller system sends a control signal to the TB6600 stepper motor driver. The TB6600 stepper motor driver drives the stepper motor 6 to rotate. The rotation of the stepper motor 6 drives the lead screw 3 to rotate. The rotation of the lead screw 3 causes the lead screw slide 5 to move the nozzle clamp 4 and the nozzle 8 to the center of the seedling belt 14 for pesticide application.

[0040] While specific embodiments of the present invention have been described herein with reference to them, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A strip application device for conservation tillage, characterized in that, It includes a microcontroller system, a nozzle moving mechanism, a position sensor (1), and a moving system power supply circuit; each nozzle moving mechanism has a position sensor (1), the output of the position sensor (1) is connected to the input of the microcontroller system, the output of the microcontroller system is connected to the drive command input of the nozzle moving mechanism, and the nozzle moving mechanism carries the nozzle to the target position; the moving system power supply circuit provides working power for the microcontroller system, the nozzle moving mechanism, and the position sensor (1).

2. The strip application device for conservation tillage as described in claim 1, characterized in that, The nozzle moving mechanism includes a lead screw guide rail (2), a lead screw (3), a nozzle clamp (4), a lead screw slide (5), a stepper motor (6), and a stepper motor driver (7). The nozzle (8) is fixed to the nozzle clamp (4) by bolts. The nozzle clamp (4) is installed on the lead screw slide (5) by bolts. The lead screw slide (5) is installed on the lead screw (3) by the internal thread and the external thread of the lead screw (3). The lead screw slide (5) is installed on the lead screw guide rail (2) and is supported and slid by the lead screw guide rail (2). The movement of the lead screw slide (5) is driven by the rotation of the lead screw (3). The rotation of the lead screw (3) is driven by the rotation of the stepper motor (6). The start, stop and rotation direction of the stepper motor (6) are controlled by the stepper motor driver (7). The position sensor (1) is mounted on the lead screw guide rail (2), and the lead screw slide (5) can carry the nozzle (8) to the position sensor (1).

3. The strip application device for conservation tillage as described in claim 2, characterized in that, The microcontroller system is built using the STM32F103C8T6 microcontroller.

4. A strip spraying device for conservation tillage as described in claim 1 or 2, characterized in that, The position sensor (1) is a position sensor with model number SN04-N.

5. The strip application device for conservation tillage as described in claim 2, characterized in that, The stepper motor driver (7) is a TB6600 stepper motor driver.

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