Large-area farmland irrigation system

Abstract

The large-area farmland irrigation system comprises regional modules and a master control module, and each regional module comprises an LORA wireless transmitting module, a mounting rod and at least one soil humidity sensor; the master control module comprises a controller, an LORA wireless receiving module and a water pump driving module for driving the water pump to work; a mounting box is arranged on the side of the mounting rod, the soil humidity sensor is connected into the mounting box, and the tail end of the soil humidity sensor extends out of the mounting box. According to the utility model, a large-area plot is divided into appropriate areas, and a plurality of humidity sensors are arranged in one area, so that each area is independently controlled, the irrigation amount is reduced, and the irrigation efficiency is also improved; humidity signals can be wirelessly transmitted to the master control module, so that the wiring amount is reduced, and the subsequent maintenance difficulty is also reduced; in addition, the soil humidity sensor is convenient to install and pull out through the installation rod, damage to the soil humidity sensor is reduced, and the service life of the soil humidity sensor is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of farmland irrigation, and particularly relates to a large-area farmland irrigation system. Background Art

[0002] Irrigation of the plants in the farmland is a large labor volume in agriculture. In current agricultural planting, manual irrigation is often adopted. People manually judge the soil humidity and then carry out irrigation according to the soil humidity information. This process has a high labor intensity, and people often judge by experience, and there are often problems of inaccurate experience.

[0003] To solve this problem, many solutions for farmland irrigation through intelligent means have been proposed in the prior art. For example, the patent document with the patent application number 202311151681.7 discloses an intelligent irrigation and fertilization control system based on data analysis. This control system relates to the technical field of control systems and includes a data acquisition module, a data processing module, a data analysis module, and an irrigation distribution module. The data acquisition module collects the soil humidity, soil nutrient content, and water level height of the farmland at any time period through a data acquisition device and transmits them to the data processing module. The data processing module processes the soil humidity, soil nutrient content, and water level height of the collected farmland to obtain precision data, and the precision data includes soil humidity precision data, soil nutrient content precision data, and water level height precision data. The present invention can solve the problems of untimely and inaccurate irrigation and fertilization in the existing solutions, and can accurately fertilize according to the real-time situation of the farmland.

[0004] However, the soil humidity sensors for collecting soil humidity information in the farmland in the prior art are often buried underground, which is applicable to soils that do not need to be plowed. However, in the current farmland planting process, in order to ensure the good growth of the plants, plowing is often required regularly, usually once a year. During plowing, in order to avoid damaging the soil humidity sensor during the plowing process, the soil humidity sensor needs to be taken out of the soil. During the taking-out process, this process is very likely to cause damage to the soil humidity sensor, resulting in some unnecessary troubles, such as updating and maintenance. Summary of the Invention

[0005] The utility model aims to provide a large-area farmland irrigation system with a simple structure and good use effect.

[0006] To solve the above technical problems, the present utility model provides the following technical solutions: a large-area farmland irrigation system, including a regional module and a master control module. Each regional module includes a LORA wireless transmission module, a mounting rod, and at least one soil humidity sensor. The master control module includes a controller, a LORA wireless reception module, a water pump, and a water pump drive module for driving the water pump. An installation box is provided on the side of the mounting rod. The soil humidity sensor is connected inside the installation box, and the end of the soil humidity sensor extends out of the installation box. The soil humidity sensor transmits the collected humidity information to the LORA wireless transmission module, and the LORA wireless transmission module transmits the received soil humidity information to the controller through the LORA wireless reception module. The controller outputs a signal to the water pump drive module, and the water pump drive module drives the operation of the water pump.

[0007] A frequency converter is connected to the controller, and the frequency converter drives the operation of the water pump. At the same time, an irrigation main pipe is connected to the water pump, and a pressure transmitter is provided inside the irrigation main pipe. The pressure transmitter collects the water pressure signal and sends it to the signal input end of the frequency converter, and the frequency converter controls the operation of the water pump.

[0008] At least one downwardly disposed insertion rod is provided at the lower part of the mounting rod, and the bottom end of the insertion rod is in a pointed shape.

[0009] A socket box is provided at a position where the installation box is close to the mounting rod, and the socket box is horizontally arranged. The installation box is slidably arranged inside the socket box. A moving part is connected to the installation box, and the moving part drives the installation box to slide inside the socket box.

[0010] The moving part includes a connecting rope, a rotating shaft, and a handwheel located on the side of the mounting rod. The middle part of the mounting rod is a hollow cavity, and the rotating shaft is rotatably arranged inside the hollow cavity. The top end of the connecting rope is connected to the installation box, the connecting rope passes through the hollow cavity, and the end of the connecting rope is wound around the rotating shaft. The rotating shaft is rotatably arranged on the hollow cavity, the end of the rotating shaft extends out of the mounting rod, and is connected to the handwheel.

[0011] The socket box includes a first-stage socket box, a last-stage socket box, and at least one second-stage socket box that are sequentially sleeved. The first-stage socket box is slidably arranged inside the second-stage socket box, and the second-stage socket box is slidably arranged inside the last-stage socket box. Limiting blocks are provided at the ends of the first-stage socket box, the second-stage socket box, and the last-stage socket box.

[0012] A first-stage irrigation pipe arranged along the length direction is connected to the water pump, a second-stage irrigation pipe is connected to the first-stage irrigation pipe, and the second-stage irrigation pipe is horizontally arranged along the width direction. Irrigation nozzles are evenly distributed on the second-stage irrigation pipe.

[0013] The inner diameter of the first-stage irrigation pipe is larger than the inner diameter of the second-stage irrigation pipe.

[0014] The first-stage irrigation pipe and the second-stage irrigation pipe are connected through a reducing tee joint.

[0015] Through the above technical solutions, the technical effects of the present utility model are as follows: 1. By dividing a large area of land into appropriate areas and arranging multiple humidity sensors in one area, individual control of each area is achieved, reducing the irrigation volume and improving the irrigation efficiency. The humidity signals can be wirelessly transmitted to the master control module, reducing the wiring amount and the subsequent maintenance difficulty. In addition, the installed mounting rod facilitates the installation and removal of the soil humidity sensor, reducing damage to the soil humidity sensor and increasing its service life. Thus, by reducing the damage rate of the soil humidity sensor, the cost is reduced and the maintenance amount is also reduced. 2. The installed solar panel can supply power to the soil humidity sensor, facilitating the power supply and further reducing the wiring amount in the farmland, thus reducing the cost. 3. The installed main irrigation pipe can meet the irrigation requirements and is not prone to bursting due to excessive water pressure in the pipe. 4. The installed installation box and socket box facilitate the protection and installation of the soil humidity sensor and also reduce damage to the soil humidity sensor during subsequent removal, ensuring the normal service life of the soil humidity sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the electrical schematic diagram of the present utility model;

[0017] Figure 2 is the structural schematic diagram of the mounting rod;

[0018] Figure 3 is the structural schematic diagram of the moving part;

[0019] Figure 4 is the structural schematic diagram of the installation box;

[0020] Figure 5 is the structural schematic diagram of the main irrigation pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Embodiment 1. A large-area farmland irrigation system. In this embodiment, a large area is defined as an area of more than 20 mu, and an area larger than 20 mu is considered a large area. Therefore, this embodiment mainly focuses on the irrigation of fields larger than 20 mu. This large-area farmland irrigation system, as Figures 1 to 5 shown, includes a master control module and at least one area module, and the area module divides the entire field evenly. In this embodiment, taking 4 area modules as an example, only one area module is drawn in the electrical schematic diagram. Each area module includes a LORA wireless transmission module U2, at least one soil humidity sensor 8, at least one water pump 9, and a water pump drive module for driving the water pump 9 to work. In this embodiment, taking 4 soil humidity sensors 8 in one area module as an example for illustration; the master control module includes a controller and a LORA wireless reception module U3.

[0022] When working, the soil humidity sensors 8 in each area transmit the collected humidity information to the LORA wireless transmission module U2. The LORA wireless transmission module U2 transmits the received soil humidity information to the controller through the LORA wireless reception module U3. The controller outputs a signal to the water pump drive module in the corresponding area, and the water pump drive module drives the operation of the water pump 9 in that area.

[0023] The controller selected in this embodiment is the PLC module U1 of model FX2N-48MR. For the convenience of signal conversion, an analog-to-digital conversion module U5 (model DAM3154) is connected to the signal output end of the soil humidity sensor 8. The signal input ends (terminals IN0, IN1, IN2, IN3, IN4) of the analog-to-digital conversion module U5 are connected to each soil humidity sensor 8 within one area. The signal output end (terminals DATA+, DATA-) of the analog-to-digital converter is connected to the reception end (terminals DATA+, DATA-) of the LORA wireless transmission module U2. The LORA wireless reception module U3 receives the humidity information at its terminals DATA+, DATA-, and the LORA wireless reception module U3 transmits the information to the PLC module U1.

[0024] To facilitate the installation of the soil humidity sensors 8 in this area, installation rods 3 are inserted into the soil.

[0025] A solar panel 1 is provided at the top of the installation rod 3. The solar panel 1 converts solar energy into electrical energy and stores it in the storage battery. To protect the storage battery, a box body 2 is connected to the installation rod 3, and the storage battery is installed in the box body 2. The storage battery supplies power to the soil humidity sensors 8 and the controller. In this embodiment, by setting the solar panel 1, a large number of wires do not need to be laid in the field subsequently, reducing the cost.

[0026] When working, the soil humidity sensors 8 are connected to the installation rod 3. At least 1 insertion rod 5 is provided downward at the lower part of the installation rod 3, and a tip 6 is provided at the bottom end of the insertion rod 5. In this embodiment, the number of insertion rods 5 is 6, and the six insertion rods 5 are respectively distributed and connected to the lower part of the installation rod 3.

[0027] An installation box 16 is provided on the side of the installation rod 3. The soil humidity sensor 8 is connected inside the installation box 16, and the end of the soil humidity sensor 8 extends out of the installation box 16, thus facilitating the installation process of the soil humidity sensor 8. A socket box 7 is provided at a position close to the installation rod 3 of the installation box 16. The socket box 7 is horizontally arranged, and the installation box 16 is slidably arranged inside the socket box 7. The socket box 7 includes a first-stage socket box 17, a last-stage socket box 20, and at least 1 second-stage socket box 19 that are sequentially sleeved. The first-stage socket box 17 is slidably arranged inside the second-stage socket box 19, and the second-stage socket box 19 is slidably arranged inside the last-stage socket box 20. Limit blocks 18 are provided at the ends of the first-stage socket box 17, the second-stage socket box 19, and the last-stage socket box 20.

[0028] In this embodiment, by providing the installation box 16, the damage to the soil moisture sensor 8 during the process of inserting and removing the soil moisture sensor 8 can be reduced, thereby reducing the damage rate of the soil moisture sensor 8 when plowing the land. When the damage rate of the soil moisture sensor 8 is reduced, the replacement quantity can be greatly reduced. At the same time, the subsequent maintenance quantity will also be greatly reduced, the labor cost is reduced, and the equipment cost is also reduced, thus reducing the cost.

[0029] To facilitate the control of the sliding of the installation box 16 in the socket box 7, a moving part is connected to the installation box 16, and the moving part drives the installation box 16 to slide in the socket box 7.

[0030] Among them, the moving part includes a connecting rope 13, a rotating shaft 14 and a handwheel 4 on the side of the installation rod 3. The middle part of the installation rod 3 is a hollow cavity, and the rotating shaft 14 is rotatably arranged in the hollow cavity; the top end of the connecting rope 13 is connected to the installation box 16, the connecting rope 13 is arranged through the hollow cavity, and the end of the connecting rope 13 is wound around the rotating shaft 14. The rotating shaft 14 is rotatably arranged on the hollow cavity, the end of the rotating shaft 14 extends out of the installation rod 3 and is connected to the handwheel 4. During implementation, the connecting rope 13 can be selected as a steel wire rope.

[0031] During operation, rotate the handwheel 4, the handwheel 4 drives the steel wire rope to move. As the steel wire rope moves, the installation box 16 drives the soil moisture sensor 8 into the socket box 7. First, it enters the first-level socket box 17. Under the action of the connecting rope 13, the first-level socket box 17 continues to move towards the installation rod 3 until the limit block 18 touches the second-level socket box 19, and then the second-level socket box 19 moves towards the last-level socket box 20 until the second-level socket box 19 enters the last-level socket box 20. At this time, the occupied width of the entire installation box 16 and the socket box 7 is already relatively small, and the difficulty of digging the installation rod 3 is greatly reduced.

[0032] In this way, when the soil needs to be renovated and the soil moisture sensor 8 needs to be removed, it can be easily removed without worrying about damage to the soil moisture sensor 8 during the insertion and removal process.

[0033] To further facilitate irrigation, an irrigation main pipe is connected to each area's water pump 9, and a pressure transmitter U6 is provided in the irrigation main pipe; the water pump drive module includes a frequency converter U4. The signal output terminals (terminals Y14, Y15) of the PLC module U1 are connected to the frequency converter U4 (model FR-D700) (terminals STF, X14). At the same time, the pressure transmitter U6 collects the water pressure signal to the signal input terminal (pin 4) of the frequency converter U4, and the U, V, and W terminals of the frequency converter U4 are output and connected to the water pump 9 to control the operation of the water pump 9.

[0034] For the convenience of work, a manual start button SB0 and a manual stop button SB1 for controlling the operation of the water pumps 9 in each area are also connected to the PLC module U1; the number of the manual start button SB0 and the manual stop button SB1 is at least the same as the number of the water pumps 9. In this embodiment, only the manual start button SB0 and the manual stop button SB1 in the first area are taken as an example for illustration.

[0035] During use, when it is in automatic control, the humidity sensor collects the humidity information in the plot and transmits the humidity information to the PLC module U1. The PLC module U1 compares this value with the threshold. When it is judged that the plot is short of water, the PLC module U1 outputs a signal to the frequency converter U4 to make the frequency converter U4 start to work; at the same time, the pressure transmitter U6 collects the water pressure in the main irrigation pipe. When the water pressure is lower than the set value, the pressure transmitter U6 outputs a signal to the frequency converter U4 to make the water pump 9 stop working; at the same time, in order to give a warning about this insufficient water pressure phenomenon, an alarm is connected to the signal output end of the PLC module U1. The PLC module U1 outputs a signal to the alarm to make the alarm emit an alarm sound for reminding the staff.

[0036] When the water pressure is normal, water comes out of the water pump 9 and enters the main irrigation pipe.

[0037] The water coming out of the water pump 9 enters the main irrigation pipe. Among them, the length of the main irrigation pipe is 100 m. The main irrigation pipe includes a primary irrigation pipe 10 and a secondary irrigation pipe 11. The primary irrigation pipe 10 is arranged along the length direction of the plot. The secondary irrigation pipe 11 is connected to the primary irrigation pipe 10. The secondary irrigation pipe 11 is horizontally arranged along the width direction of the plot. The number of the secondary irrigation pipes 11 is multiple, and the distance between adjacent secondary irrigation pipes 11 is 20 m. Irrigation nozzles 12 are evenly distributed on the secondary irrigation pipe 11, and the distance between adjacent irrigation nozzles 12 is 20 m. Among them, the used irrigation nozzles 12 are commercially available products and can be directly purchased. When connecting, the inner diameter of the primary irrigation pipe 10 is larger than the inner diameter of the secondary irrigation pipe 11. The primary irrigation pipe 10 and the secondary irrigation pipe 11 are connected through a reducing tee joint. The reducing tee joint includes a connecting pipe and a joint pipe connected to the middle of the connecting pipe. The connecting pipe is connected to the primary irrigation pipe 10, and the secondary irrigation pipe 11 is connected to the joint pipe. Moreover, the inner diameter of the joint pipe is smaller than the inner diameter of the connecting pipe.

[0038] The working process is as follows: Before use, dig a pit in the area, insert the bottom end of the installation rod 3 into the pit, and insert the insertion rod 5 into the soil to increase the stability of the installation rod 3. After installation, the battery on the installation rod 3 powers the soil humidity sensor 8 and the LORA wireless transmission module U2. The soil humidity sensor 8 collects the humidity information of the soil and transmits the collected humidity signal to the PLC module U1. The PLC module U1 outputs a signal to the frequency converter U4 according to the received humidity signal to control the operation of the water pump 9. At the same time, the pressure transmitter U6 collects the water pressure information and also outputs a signal to the frequency converter U4 to control the operation of the water pump 9.

[0039] When the soil in an area needs to be plowed and maintained, the soil humidity sensor 8 needs to be pulled out to avoid damaging the soil humidity sensor 8 during the plowing process. At this time, rotate the handwheel 4, and the handwheel 4 drives the installation box 16 to make the soil humidity sensor 8 enter the socket box 7. Further rotate the handwheel 4 to make the socket box 7 shorter. On the one hand, it is convenient to dig out the installation rod 3, and on the other hand, it protects the soil humidity sensor 8 and prevents it from being damaged during the digging process.

[0040] By dividing a large area of land into appropriate areas and setting multiple humidity sensors in one area, the utility model can control each area separately, reducing the irrigation amount and improving the irrigation efficiency. The humidity signal can be wirelessly transmitted to the total control module, reducing the wiring amount and the subsequent maintenance difficulty. In addition, the set installation rod facilitates the installation and removal of the soil humidity sensor, reduces the damage to the soil humidity sensor, and improves its service life.

Claims

1. Large-area farmland irrigation system, characterized in that: It includes a regional module and a master control module. Each regional module includes a LORA wireless transmission module, a mounting rod, and at least one soil humidity sensor. The master control module includes a controller, a LORA wireless reception module, a water pump, and a water pump drive module for driving the water pump to work. An installation box is provided on the side of the mounting rod. The soil humidity sensor is connected inside the installation box, and the end of the soil humidity sensor extends out of the installation box. The soil humidity sensor transmits the collected humidity information to the LORA wireless transmission module, and the LORA wireless transmission module transmits the received soil humidity information to the controller through the LORA wireless reception module. The controller outputs a signal to the water pump drive module, and the water pump drive module drives the water pump to work.

2. The large-area farmland irrigation system according to claim 1, characterized in that: A frequency converter is connected to the controller, and the frequency converter drives the water pump to work. At the same time, an irrigation main pipe is connected to the water pump, and a pressure transmitter is provided inside the irrigation main pipe. The pressure transmitter collects the water pressure signal and sends it to the signal input end of the frequency converter, and the frequency converter controls the work of the water pump.

3. The large-area farmland irrigation system according to claim 2, characterized in that: At least one insertion rod facing downward is provided at the lower part of the mounting rod, and the bottom end of the insertion rod is in a pointed shape.

4. The large-area farmland irrigation system according to claim 3, wherein: A socket box is provided at a position of the installation box close to the mounting rod. The socket box is horizontally arranged. The installation box is slidably arranged inside the socket box. A moving part is connected to the installation box, and the moving part drives the installation box to slide inside the socket box.

5. The large-area farmland irrigation system according to claim 4, characterized in that: The moving part includes a connecting rope, a rotating shaft, and a handwheel located on the side of the mounting rod. The middle part of the mounting rod is a hollow cavity, and the rotating shaft is rotatably arranged inside the hollow cavity. The top end of the connecting rope is connected to the installation box. The connecting rope passes through the hollow cavity, and the end of the connecting rope is wound around the rotating shaft. The rotating shaft is rotatably arranged on the hollow cavity, and the end of the rotating shaft extends out of the mounting rod and is connected to the handwheel.

6. The large-area farmland irrigation system according to claim 5, characterized in that: The socket box includes a primary socket box, a final socket box, and at least one secondary socket box that are sequentially sleeved. The primary socket box is slidably arranged inside the secondary socket box, and the secondary socket box is slidably arranged inside the final socket box. Limiting blocks are provided at the ends of the primary socket box, the secondary socket box, and the final socket box.

7. The large-area farmland irrigation system according to claim 6, characterized in that: A solar panel is installed on the upper part of the mounting rod.

8. The large-area farmland irrigation system according to claim 7, characterized in that: A primary irrigation pipe arranged along the length direction is connected to the water pump. A secondary irrigation pipe is connected to the primary irrigation pipe, and the secondary irrigation pipe is horizontally arranged along the width direction. Irrigation nozzles are evenly distributed on the secondary irrigation pipe. The inner diameter of the primary irrigation pipe is larger than the inner diameter of the secondary irrigation pipe.

9. The large-area farmland irrigation system according to claim 8, wherein: The primary irrigation pipe and the secondary irrigation pipe are connected through a reducing tee joint.

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