An intelligent irrigation system and an irrigation method thereof

Abstract

The application discloses an intelligent irrigation system and an irrigation method thereof, and belongs to the field of irrigation. The intelligent irrigation system comprises an electronic part and a mechanical part. The electronic part comprises a cloud end, an information acquisition module, a river opening and closing execution module and a plurality of farmland irrigation execution modules which are in communication with each other and with the cloud end. The cloud end is provided with an irrigation neural network model. The farmland irrigation execution module comprises an SD series execution mechanism. The SD series execution mechanism comprises an irrigation main control chip which is in communication with the cloud end through an LORA+4G networking module and an irrigation electric actuator which is connected with the irrigation main control chip. The irrigation electric actuator comprises an irrigation valve, an irrigation DC motor which is used for controlling opening and closing and opening degree of the irrigation valve and an irrigation encoder which is used for collecting the opening degree of the irrigation valve. The intelligent irrigation system and the irrigation method thereof are adopted, on the basis of controlling opening and closing of the valve, the opening degree of the valve can be further controlled, and flexible adjustment of irrigation quantity is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent irrigation, in particular to an intelligent irrigation system and an irrigation method thereof. BACKGROUND

[0002] With the development of information technology, the mode of agricultural production has also changed from the previous planting mode mainly relying on manpower to the planting mode relying on machinery, and then to the informationization and automation direction. In this process, various intelligent planting technologies have emerged. For example:

[0003] CN201610106337.X discloses a greenhouse water, fertilizer, gas and heat integrated intelligent irrigation system. The system uses clean energy as a power source to solve the irrigation power supporting problem, is economical and environmentally friendly, and has low system energy consumption. The PLC controller is used to realize intelligent control of the entire system, and the intelligent mobile terminal is used to detect and control the entire automatic operation.

[0004] CN201510015309.2 discloses a mobile phone remote intelligent irrigation system. The intelligent irrigation system includes a network data processor and a smart phone. The smart phone is provided with an APP intelligent irrigation software. The electromagnetic valve controller is a wireless electromagnetic valve controller. The water flow switch valve is provided with a water flow sensor. The electromagnetic valve controller is automatically started according to the setting, or the work is remotely controlled through the APP intelligent irrigation software in the smart phone, so that the water flow sensor senses the signal that the water is flowing, and the water pump is started. The electromagnetic valve controller is automatically closed through the above-mentioned mode, and the water pump is automatically stopped. Thus, the end electromagnetic valve controller is intelligently controlled to trigger the work of the intelligent frequency conversion control cabinet at the head.

[0005] CN201810183165.5 discloses a city garden irrigation multi-point split / combined intelligent control system and implementation method. The system includes a central controller, a gateway module, a center node module, and a terminal module. The system also provides an implementation method for city garden irrigation multi-point split / combined intelligent control. The computer intelligent irrigation system transmits meteorological parameters and soil parameters related to plant water demand, such as air temperature and humidity, rainfall, wind force and direction, and soil temperature and humidity, to the central computer through the gateway module. The central computer determines the required irrigation time and water volume through corresponding software, and then sends instructions to related equipment to implement a water irrigation method. When the irrigation is completed in a certain order, the system automatically stops irrigation, thereby achieving high automation. The computer-controlled irrigation system can connect the subsystem through Ethernet to implement remote control, thereby realizing multi-region one-point multi-control and three-level control technology. The subsystem includes a gateway, a center node, and a terminal node.

[0006] In summary, the existing irrigation system has the following drawbacks:

[0007] 1. Some systems require on-site installation of communication and power cables to connect the electric actuators and the main controller, resulting in high installation costs and increased planting costs. In addition, some wireless control methods can only control the opening and closing of valves but not the degree of valve opening.

[0008] 2. Since the irrigation amount needs to be set based on human experience, it requires growers to have certain planting experience and system operation experience, which raises the requirements for growers and does not meet the current needs of growers.

[0009] 3. Most existing irrigation systems use valve-controlled flood irrigation, drip irrigation, or sprinkler irrigation. Flood irrigation wastes water resources; drip irrigation requires the drip holes to be placed close to the plants, so it is only suitable for watering trees with low planting density, and not for common crops with high planting density such as corn, cotton, and wheat; sprinkler irrigation has uneven irrigation at different locations, with less irrigation closer to the sprinkler head. In addition, the placement of drip irrigation or sprinkler irrigation in farmland affects the subsequent harvesting work of automated machinery, reducing planting efficiency. Summary of the Invention

[0010] To address the aforementioned problems, this invention provides an intelligent irrigation system and its irrigation method. In addition to controlling the opening and closing of valves, the system can further control the valve opening degree, thereby enabling flexible adjustment of the irrigation volume.

[0011] To achieve the above objectives, the present invention provides an intelligent irrigation system, comprising an electronic part and a mechanical part. The electronic part includes a cloud platform that communicates with each other, an information acquisition module that communicates with the cloud platform, a river channel opening and closing execution module, and multiple farmland irrigation execution modules. An irrigation neural network model is mounted on the cloud platform.

[0012] The farmland irrigation execution module includes SD series actuators. The SD series actuators include an irrigation main control chip that communicates with the cloud via a LoRa+4G networking module and an irrigation electric actuator connected to the irrigation main control chip. The irrigation electric actuator includes an irrigation valve, an irrigation DC motor for controlling the opening and closing of the irrigation valve and the opening degree, and an irrigation encoder for collecting the opening degree of the irrigation valve.

[0013] Preferably, the mechanical part includes an irrigation canal connected to the river and arranged parallel to the farmland to be irrigated, and a walking simulated rainfall mechanism. The walking simulated rainfall mechanism includes a pumping component for pumping water out of the irrigation canal, a simulated rainfall component connected to the pumping component, and a walking component for walking along the ridges or between the fields of the farmland to be irrigated. The pumping component and the simulated rainfall component are both mounted on the walking component.

[0014] Preferably, the walking assembly includes a plurality of parallel walking wheels, the outer side of the wheel axle of which is connected to a walking AC motor;

[0015] The travel AC motor is a hub motor, which is electrically connected to the power grid via a cable, which is wound around the travel wheel; the wheel axle is a hollow axle.

[0016] The simulated rainfall component includes a rainfall pipe that passes through the axles of multiple walking wheels and is rotatably connected to the axles. The bottom end of the rainfall pipe has multiple rainfall holes arranged in a rectangular array. Any end of the rainfall pipe passes through the outermost walking wheel and is connected to the pumping component.

[0017] Gravity strips are installed at the bottom of the rain pipe and on both sides symmetrical about the rain hole, and the height of the rain pipe is higher than the height of the crop;

[0018] The pumping assembly includes an L-shaped follower connecting pipe connected to the rain pipe at one end and a pumping pump located at the other end of the L-shaped follower connecting pipe.

[0019] The L-shaped follower connecting pipe is equipped with a water pump at one end and a horn-shaped water inlet is connected to the horn-shaped water inlet, which is equipped with a filter screen.

[0020] A water level sensor is installed in the irrigation canal. The water level sensor is connected to the main irrigation control chip, which is in turn connected to the water pump.

[0021] Preferably, the farmland irrigation execution module also includes a walking actuator, which includes a walking AC motor and a walking encoder for acquiring the speed of the walking AC motor. Both the walking AC motor and the walking encoder are connected to the irrigation main control chip.

[0022] Preferably, the rain pipe and the wheel axle are connected by a rotating sliding positioning component. The rotating sliding positioning component includes an inner tightening ring, an outer pressure ring, and a rotating bearing arranged sequentially from the inside to the outside between the rain pipe and the wheel axle. The inner tightening ring is an annular structure composed of at least three tightening blocks arranged around the rain pipe.

[0023] The inner side of the rotating bearing is threadedly connected to the outer side of the outer pressure ring, the inner side of the outer pressure ring is fitted to the outer side of the inner tightening ring, and the inner tightening ring is fixedly connected to the outer side of the rain pipe.

[0024] The inner side of the outer pressure ring is set as a trumpet-shaped ramp, the outer side of the inner tightening ring is set as a ramp structure parallel to the trumpet-shaped ramp, and the inner side of the inner tightening ring is set as an arc-shaped structure adapted to the rain pipe.

[0025] The minimum outer diameter of the inner tightening ring is smaller than the minimum inner diameter of the outer pressure ring, the maximum outer diameter of the inner tightening ring is smaller than the maximum inner diameter of the outer pressure ring, and the length of the inner tightening ring is smaller than the length of the outer pressure ring.

[0026] Preferably, the electronic part also includes a river channel opening and closing execution module. The river channel opening and closing execution module includes a river channel main control chip that communicates with the cloud via a LoRa+4G networking module and multiple switching valves that communicate with the river channel main control chip and are arranged in parallel in the river channel. The switching valves include an opening and closing DC motor and an opening and closing encoder. The output end of the opening and closing DC motor is connected to a horizontal worm gear, which meshes with a worm wheel. The center of the worm wheel is fixedly connected to one end of a vertical lead screw, and the other end of the vertical lead screw is threaded with a nut, which is fixedly connected to a valve plate.

[0027] A camera is also placed on the river channel and at the location corresponding to the river channel opening and closing execution module. The camera is connected to the river channel main control chip.

[0028] Both the opening / closing encoder and the irrigation encoder are multi-turn absolute encoders.

[0029] Preferably, the electronic part also includes an information acquisition module, which includes an information collector arranged in the farmland to be irrigated and communicating with the cloud via a LORA+4G networking module, and a weather factor acquisition unit, a soil moisture sensor, a crop stem flow sensor and a GPS time synchronization device connected to the information collector.

[0030] The weather factor acquisition unit includes a sunshine sensor, a wind speed sensor, a rainfall sensor, and a weather station.

[0031] Preferably, the farmland irrigation execution module, the river channel opening and closing execution module, and the information acquisition module all include a solar power supply unit, which includes a solar panel, a rectifier filter circuit, and a rechargeable battery connected in series.

[0032] The output terminals of the rectifier and filter circuit and the rechargeable battery are both connected to the farmland irrigation execution module, the river channel opening and closing execution module, or the information acquisition module.

[0033] Priority-defined cloud-based programmable switches are connected to the rectifier filter circuit and the rechargeable battery, respectively.

[0034] An irrigation method for an intelligent irrigation system includes the following steps:

[0035] S1. Training the irrigation neural network model:

[0036] S11. Collect planting information online or offline, and compile the planting information into a dataset:

[0037] Planting information includes input information and corresponding output information. Input information includes plant species information, developmental stage information, sunshine, wind speed, rainfall, weather, crop stem flow information, and harvest information. Output information includes irrigation amount.

[0038] S12. Divide the dataset into a training set and a validation set;

[0039] S13. Input the training set into the irrigation neural network model to train the model;

[0040] S14. After the model training is completed, input the input information from the test set into the irrigation neural network model, compare and determine whether the output information is the corresponding output information. If it is, proceed to the next step; otherwise, return to step S11.

[0041] S2. Site Setup:

[0042] S21. Adjust the position of the walking wheels according to the location of the ridges or the field.

[0043] S22. Place the water pump into the irrigation canal;

[0044] S3. Use the information collection module to collect the input information of planting information of the farmland to be irrigated, and input the collected input information into the irrigation neural network model in the cloud. The irrigation neural network model outputs the irrigation amount information per acre.

[0045] S4. Calculate the opening value of the irrigation valve based on the irrigation amount per mu obtained in step S3, and control the valve opening of the irrigation electric actuator according to the calculated irrigation valve opening value.

[0046] S5. Send an opening command to the opening and closing DC motor of the river channel opening and closing execution module via the cloud to open the river channel. The water in the river channel flows into the irrigation canal until the water level sensor in the irrigation canal collects the water level value and the set value.

[0047] S6. Start the walking AC motor and water pump. During the walking process, the water pump will draw water out of the irrigation canal and spray the water vertically downward through the rain pipe.

[0048] S7. When the set irrigation time is reached, turn off the AC motor and water pump, and seal the river channel by opening and closing the valve plate below the DC motor.

[0049] Preferably, step S21 specifically includes the following steps:

[0050] S211. Rotate the outer pressure ring. Under the action of the thread, the outer pressure ring and the inner tightening ring move relative to each other until the inner tightening ring and the outer pressure ring are released from the pressure.

[0051] S212. Move the walking wheels along the axial direction of the rain pipe until the walking wheels are aligned with the field ridges or the field.

[0052] S213. Rotate the outer pressure ring in the opposite direction until, under the action of the slope, the outer pressure ring presses the inner tightening ring back onto the rain pipe;

[0053] Step S4 specifically includes the following steps:

[0054] S41. By setting the walking speed v of the walking wheels, the number n of farmland irrigation execution modules, the length h of the rain pipe of each farmland irrigation execution module, the total irrigation time T, and the total irrigation area S, the following formula is obtained:

[0055] v*T*h*n*x%*L1=L2*S

[0056] In the formula, x% is the opening degree of the irrigation valve of the electric irrigation actuator; L1 is the flow rate of the irrigation valve of the electric irrigation actuator; L2 is the irrigation volume;

[0057] The results were:

[0058]

[0059] S42, The irrigation main control chip marks the coding position of the irrigation encoder to match 0%-100%;

[0060] S43. After receiving the calculated irrigation valve opening value, the irrigation main control chip first determines the on / off state of the irrigation valve. If the irrigation valve is in the closed state, it sends an irrigation valve opening command to the irrigation DC motor. The irrigation DC motor drives the irrigation valve to open and continues to rotate until the irrigation encoder collects the irrigation valve opening value. If the irrigation valve is in the open state, it further compares the current opening value with the calculated opening value and drives the irrigation DC motor to rotate according to the comparison result until the opening value reaches the calculated opening value.

[0061] The present invention has the following beneficial effects:

[0062] 1. Without human intervention, the irrigation system can determine the opening value based on collected information using an irrigation neural network, and then automatically control the opening of the irrigation valve based on the calculated opening value, thus achieving true unattended operation.

[0063] 2. Using solar power reduces the cost of laying power lines and avoids the impact of power lines on planting.

[0064] 3. Simple to operate; just follow the prompts to input the known planting information and the irrigation amount will be calculated automatically and the irrigation will be operated automatically, reducing the requirements for planting personnel;

[0065] 4. Irrigation is carried out in the form of simulated rainfall, which saves water resources and makes irrigation more even.

[0066] 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

[0067] Figure 1This is a structural block diagram of the electronic component of an intelligent irrigation system according to the present invention;

[0068] Figure 2 This is a structural block diagram of a solar power supply unit for an intelligent irrigation system according to the present invention;

[0069] Figure 3 This is a top view of a walking simulated rainfall mechanism of an intelligent irrigation system according to the present invention;

[0070] Figure 4 This is a front view of the walking simulated rainfall mechanism of an intelligent irrigation system according to the present invention;

[0071] Figure 5 This is a side view of the walking wheels of an intelligent irrigation system according to the present invention;

[0072] Figure 6 This is a schematic diagram of the rotating sliding positioning component of the walking wheel of an intelligent irrigation system according to the present invention;

[0073] Figure 7 This is a front view of the river channel opening and closing execution module of an intelligent irrigation system according to the present invention;

[0074] Figure 8 This is a flowchart of an irrigation method according to the present invention;

[0075] Figure 9 This is a schematic diagram of the structure of a dual-suspension motor in an intelligent irrigation system according to the present invention;

[0076] Figure 10 This is a schematic diagram of the structure of a single-pole motor in an intelligent irrigation system according to the present invention;

[0077] Figure 11 This is a schematic diagram of the structure and principle of a single-pole motor in an intelligent irrigation system according to the present invention.

[0078] The components include: 1. River channel; 2. River channel opening and closing execution module; 21. Opening and closing DC motor; 22. Vertical lead screw; 23. Support frame; 24. Valve plate; 25. Horizontal worm gear; 26. Worm wheel; 27. Nut; 3. Irrigation canal; 4. Walking simulated rainfall mechanism; 41. L-shaped follow-up connecting pipe; 42. Irrigation valve nut; 43. Walking wheel; 44. Rainfall pipe; 45. Rainfall hole; 46. Water pump; 47. Walking AC motor; 48. Outer pressure ring; 49. Inner tightening ring. Detailed Implementation

[0079] The present invention will be further described below with reference to the accompanying drawings. It should be noted that this embodiment is based on the present technical solution and provides detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to this embodiment.

[0080] Figure 1 This is a structural block diagram of the electronic component of an intelligent irrigation system according to the present invention, as shown below. Figure 1 As shown, an intelligent irrigation system includes an electronic part and a mechanical part. The electronic part includes a cloud that communicates with each other, an information acquisition module that communicates with the cloud, a river channel opening and closing execution module 2, and multiple farmland irrigation execution modules. An irrigation neural network model is mounted on the cloud.

[0081] The farmland irrigation execution module includes SD series actuators. The SD series actuators include an irrigation main control chip that communicates with the cloud via a LORA+4G networking module and an irrigation electric actuator connected to the irrigation main control chip. The irrigation electric actuator includes an irrigation valve 42, an irrigation DC motor for controlling the opening and closing of the irrigation valve 42 and the opening degree, and an irrigation encoder for acquiring the opening degree of the irrigation valve 42.

[0082] Preferably, the mechanical part includes an irrigation canal 3 connected to the river channel 1 and arranged parallel to the farmland to be irrigated, and a walking simulated rainfall mechanism 4. The walking simulated rainfall mechanism 4 includes a pumping component for pumping water out of the irrigation canal 3, a simulated rainfall component connected to the pumping component, and a walking component for walking along the ridges or between the fields of the farmland to be irrigated. The pumping component and the simulated rainfall component are both mounted on the walking component.

[0083] Preferably, the walking assembly includes a plurality of parallel walking wheels 43, the outer side of the wheel axle of the walking wheels 43 being connected to a walking AC motor 47. In this embodiment, the plurality of walking AC motors 47 walk synchronously under the control of the irrigation main control chip.

[0084] The travel AC motor 47 is a hub motor, which is electrically connected to the power grid via a cable, and the cable is wound around the travel wheel 43; the wheel axle is a hollow axle;

[0085] The simulated rainfall assembly includes a rainfall pipe 44 that passes through the axles of multiple walking wheels 43 in sequence and is rotatably connected to the axles. The bottom end of the rainfall pipe 44 is evenly provided with multiple rainfall holes 45 arranged in a rectangular array. Any end of the rainfall pipe 44 passes through the outermost walking wheel 43 and is connected to the pumping assembly.

[0086] Gravity strips are provided at the bottom of the rain pipe 44 and on both sides symmetrical about the rain hole 45 to ensure that the rain hole 45 is always arranged downwards, and the height of the rain pipe 44 is higher than the height of the crop to avoid the impact on the crop during irrigation.

[0087] The pumping assembly includes an L-shaped follower connecting pipe 41 connected to the rain pipe 44 at one end and a pump 46 located at the other end of the L-shaped follower connecting pipe 41. An irrigation valve 42 is provided at the end of the L-shaped follower connecting pipe 41 near the pump 46.

[0088] The L-shaped follower connecting pipe 41 is equipped with a water pump 46 at one end, which is also connected to a horn-shaped water inlet. A filter screen is installed on the horn-shaped water inlet to prevent impurities in the water from entering and jamming the water pump 46, which could cause damage to the water pump 46.

[0089] A water level sensor is installed in the irrigation canal 3. The water level sensor is connected to the irrigation main control chip, which is connected to the water pump 46. The irrigation main control chip has a set water level. During irrigation, the water pump 46 will only be activated when the water level sensor detects that the water level in the irrigation canal 3 is not lower than the set water level, thus avoiding damage to the water pump 46 due to dry burning.

[0090] Preferably, the farmland irrigation execution module also includes a walking actuator, which includes a walking AC motor 47 and a walking encoder for acquiring the speed of the walking AC motor 47. Both the walking AC motor 47 and the walking encoder are connected to the irrigation main control chip.

[0091] Preferably, the rain pipe 44 is connected to the wheel axle via a rotating sliding positioning component. This component includes an inner tightening ring 49, an outer pressure ring 48, and a rotating bearing, arranged sequentially from the inside to the outside between the rain pipe 44 and the wheel axle. The inner tightening ring 49 is an annular structure composed of at least three tightening blocks surrounding the rain pipe 44. The inner side of the rotating bearing is threadedly connected to the outer side of the outer pressure ring 48, and the inner side of the outer pressure ring 48 is fitted against the outer side of the inner tightening ring 49. The outer side of the rain pipe 44 is fixedly connected; the inner side of the outer pressure ring 48 is provided with a trumpet-shaped ramp, the outer side of the inner tightening ring 49 is provided with a ramp structure parallel to the trumpet-shaped ramp, and the inner side of the inner tightening ring 49 is provided with an arc-shaped structure adapted to the rain pipe 44; the minimum outer diameter of the inner tightening ring 49 is smaller than the minimum inner diameter of the outer pressure ring 48, the maximum outer diameter of the inner tightening ring 49 is smaller than the maximum inner diameter of the outer pressure ring 48, and the length of the inner tightening ring 49 is smaller than the length of the outer pressure ring 48.

[0092] Preferably, the electronic component also includes a river channel opening and closing execution module 2. The river channel opening and closing execution module 2 includes a main control chip for river channel 1 that communicates with the cloud via a LoRa+4G networking module, and multiple switching valves that communicate with the main control chip for river channel 1 and are arranged in parallel within river channel 1. Each switching valve includes an opening and closing DC motor 21 and an opening and closing encoder. The output end of the opening and closing DC motor 21 is connected to a horizontal worm gear 25, which meshes with a worm wheel 26. The center of the worm wheel is fixedly connected to one end of a vertical lead screw 22, and the other end of the vertical lead screw 22 is threadedly connected to a nut 27, which is fixedly connected to a valve plate 24. A camera is also arranged on river channel 1 at a position corresponding to the position of the river channel opening and closing execution module 2. The camera is connected to the main control chip for river channel 1 and is used for video monitoring of the opening and closing status of the valves in river channel 1. Both the opening and closing encoder and the irrigation encoder are multi-turn absolute encoders.

[0093] In this embodiment, when the valve plate is wide, a double-suspension motor structure is adopted, that is, both ends of the transverse worm are connected to a screw and nut structure, and the valve plate is connected together through the two screws and nuts. When the valve plate is narrow, either end of the transverse worm can be connected to the valve plate through the screw and nut structure.

[0094] Preferably, the electronic part also includes an information acquisition module, which includes an information collector deployed in the farmland to be irrigated and communicating with the cloud via a LoRa+4G networking module, and a weather factor acquisition unit, a soil moisture sensor, a crop stem flow sensor, and a GPS time synchronization device connected to the information collector; the weather factor acquisition unit includes a sunshine sensor, a wind speed sensor, a rainfall sensor, and a weather station.

[0095] Preferably, the farmland irrigation execution module, the river channel opening and closing execution module 2, and the information acquisition module all include a solar power supply unit. The solar power supply unit includes a solar panel, a rectifier filter circuit, and a rechargeable battery connected in series. The output terminals of the rectifier filter circuit and the rechargeable battery are connected to the farmland irrigation execution module, the river channel opening and closing execution module 2, or the information acquisition module. The cloud-based system, with set priorities, is connected to the rectifier filter circuit and the rechargeable battery respectively via a programmable switch. In this embodiment, the priority is to first use the DC power output of the rectifier filter circuit for power supply. When the output of the rectifier filter circuit is low, the cloud-based system switches the programmable switch to use the rechargeable battery for power supply.

[0096] An irrigation method for an intelligent irrigation system includes the following steps:

[0097] S1. Training the irrigation neural network model:

[0098] S11. Collect planting information online or offline, and compile the planting information into a dataset:

[0099] Planting information includes input information and corresponding output information. Input information includes plant species information (such as corn and wheat), developmental stage information (such as germination stage, leaf expansion stage, flowering stage, and fruiting stage), sunshine, wind speed, rainfall, weather, crop stem flow information, and harvest information. Output information includes irrigation amount. In this embodiment, online information includes papers, journals, and experimental data, while offline planting information includes inquiries with experienced planting personnel.

[0100] S12. Divide the dataset into a training set and a validation set;

[0101] S13. Input the training set into the irrigation neural network model to train the model;

[0102] S14. After the model training is completed, input the input information from the test set into the irrigation neural network model, compare and determine whether the output information is the corresponding output information. If yes, proceed to the next step; otherwise, return to step S11.

[0103] S2. Site Setup:

[0104] S21. Adjust the position of the walking wheel 43 according to the position of the ridge or the field;

[0105] Preferably, step S21 specifically includes the following steps:

[0106] S211. Rotate the outer pressure ring 48. Under the action of the thread, the outer pressure ring 48 and the inner tightening ring 49 move relative to each other until the inner tightening ring 49 and the outer pressure ring 48 are released from the pressure.

[0107] S212. Move the walking wheel 43 along the axial direction of the rain pipe 44 until the walking wheel 43 is aligned with the ridge or field.

[0108] S213. Rotate the outer pressure ring 48 in the opposite direction until, under the action of the ramp, the outer pressure ring 48 presses the inner tightening ring 49 back onto the rain pipe 44.

[0109] S22. Place the water pump 46 into the irrigation canal 3;

[0110] S3. Use the information collection module to collect the input information of planting information of the farmland to be irrigated, and input the collected input information into the irrigation neural network model in the cloud. The irrigation neural network model outputs the irrigation amount information per acre.

[0111] S4. Calculate the opening value of irrigation valve 42 based on the irrigation amount per mu obtained in step S3, and control the valve opening of the irrigation electric actuator according to the calculated opening value of irrigation valve 42.

[0112] Step S4 specifically includes the following steps:

[0113] S41. By setting the walking speed v of the walking wheel 43, the number n of farmland irrigation execution modules, the length h of the rain pipe 44 of each farmland irrigation execution module, the total irrigation time T, and the total irrigation area S, the following formula is obtained:

[0114] v*T*h*n*x%*L1=L2*S

[0115] In the formula, x% is the opening degree of irrigation valve 42 of the irrigation electric actuator; L1 is the flow rate of irrigation valve 42 of the irrigation electric actuator; L2 is the irrigation volume;

[0116] The results were:

[0117]

[0118] S42, The irrigation main control chip marks the coding position of the irrigation encoder to match 0%-100%;

[0119] S43. After receiving the calculated opening value of irrigation valve 42, the irrigation main control chip first determines the on / off state of irrigation valve 42. If irrigation valve 42 is in the closed state, it sends an opening command to irrigation DC motor. Irrigation DC motor drives irrigation valve 42 to open and continue to rotate until the irrigation encoder collects the opening degree of irrigation valve 42 reaching the calculated opening degree value. If irrigation valve 42 is in the open state, it further compares the current opening value with the calculated opening value, and drives the irrigation DC motor to rotate according to the comparison result until the opening degree reaches the calculated opening value.

[0120] S5. Send an opening command to the opening and closing DC motor 21 of the river channel opening and closing execution module 2 via the cloud to open the river channel 1. The water in the river channel 1 flows into the irrigation canal 3 until the water level sensor in the irrigation canal 3 collects the water level value and the set value.

[0121] S6. Start the walking AC motor 47 and the water pump 46. During the walking process, the water pump 46 draws water out of the irrigation canal 3 and sprays the water vertically downward through the rain pipe 44.

[0122] S7. When the set irrigation time is reached, turn off the walking AC motor 47 and the water pump 46, and seal the river channel 1 through the valve plate 24 below the opening and closing DC motor 21.

[0123] Therefore, the present invention employs the above-mentioned intelligent irrigation system and irrigation method, which, in addition to controlling the opening and closing of the valve, can further control the opening degree of the valve, thereby realizing flexible adjustment of the irrigation amount.

[0124] 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. An intelligent irrigation system, comprising an electronic component and a mechanical component, wherein the electronic component includes a cloud platform for communication with each other, an information acquisition module communicating with the cloud platform, a river channel opening / closing execution module, and multiple farmland irrigation execution modules, characterized in that: An irrigation neural network model is mounted in the cloud. The farmland irrigation execution module includes SD series actuators. The SD series actuators include an irrigation main control chip that communicates with the cloud via a LORA+4G networking module and an irrigation electric actuator connected to the irrigation main control chip. The irrigation electric actuator includes an irrigation valve, an irrigation DC motor for controlling the opening and closing of the irrigation valve and the opening degree, and an irrigation encoder for collecting the opening degree of the irrigation valve. The mechanical part includes an irrigation canal that is connected to the river and arranged parallel to the farmland to be irrigated, and a walking simulated rainfall mechanism. The walking simulated rainfall mechanism includes a pumping component for pumping water out of the irrigation canal, a simulated rainfall component connected to the pumping component, and a walking component for walking along the ridges or between the fields of the farmland to be irrigated. The pumping component and the simulated rainfall component are both mounted on the walking component. The walking assembly includes multiple parallel walking wheels, with the outer side of the wheel axle connected to a walking AC motor; The travel AC motor is a hub motor, which is electrically connected to the power grid via a cable, which is wound around the travel wheel; the wheel axle is a hollow axle. The simulated rainfall component includes a rainfall pipe that passes through the axles of multiple walking wheels and is rotatably connected to the axles. The bottom end of the rainfall pipe has multiple rainfall holes arranged in a rectangular array. Any end of the rainfall pipe passes through the outermost walking wheel and is connected to the pumping component. Gravity strips are installed at the bottom of the rain pipe and on both sides symmetrical about the rain hole, and the height of the rain pipe is higher than the height of the crop; The pumping assembly includes an L-shaped follower connecting pipe connected to the rain pipe at one end and a pumping pump located at the other end of the L-shaped follower connecting pipe. The L-shaped follower connecting pipe is equipped with a water pump at one end and a horn-shaped water inlet is connected to the horn-shaped water inlet, which is equipped with a filter screen. A water level sensor is installed in the irrigation canal. The water level sensor is connected to the main irrigation control chip, which is in turn connected to the water pump. The rain pipe is connected to the wheel axle via a rotating sliding positioning component. The rotating sliding positioning component includes an inner tightening ring, an outer pressure ring, and a rotating bearing arranged sequentially from the inside to the outside between the rain pipe and the wheel axle. The inner tightening ring is a ring structure composed of at least three tightening blocks arranged around the rain pipe. The inner side of the rotating bearing is threadedly connected to the outer side of the outer pressure ring, the inner side of the outer pressure ring is fitted to the outer side of the inner tightening ring, and the inner tightening ring is fixedly connected to the outer side of the rain pipe. The inner side of the outer pressure ring is set as a trumpet-shaped ramp, the outer side of the inner tightening ring is set as a ramp structure parallel to the trumpet-shaped ramp, and the inner side of the inner tightening ring is set as an arc-shaped structure adapted to the rain pipe. The minimum outer diameter of the inner tightening ring is smaller than the minimum inner diameter of the outer pressure ring, the maximum outer diameter of the inner tightening ring is smaller than the maximum inner diameter of the outer pressure ring, and the length of the inner tightening ring is smaller than the length of the outer pressure ring.

2. The intelligent irrigation system according to claim 1, characterized in that: The farmland irrigation execution module also includes a walking actuator, which includes a walking AC motor and a walking encoder for acquiring the speed of the walking AC motor. Both the walking AC motor and the walking encoder are connected to the irrigation main control chip.

3. The intelligent irrigation system according to claim 1, characterized in that: The electronic part also includes a river channel opening and closing execution module. The river channel opening and closing execution module includes a river channel main control chip that communicates with the cloud via a LORA+4G networking module, and multiple switch valves that communicate with the river channel main control chip and are arranged in parallel in the river channel. The output end of the opening and closing DC motor is connected to a horizontal worm gear, which meshes with a worm wheel. The center of the worm wheel is fixedly connected to one end of a vertical lead screw, and the other end of the vertical lead screw is threaded with a nut, which is fixedly connected to the valve plate. A camera is also placed on the river channel and at the location corresponding to the river channel opening and closing execution module. The camera is connected to the river channel main control chip. Both the opening / closing encoder and the irrigation encoder are multi-turn absolute encoders.

4. The intelligent irrigation system according to claim 3, characterized in that: The electronic component also includes an information acquisition module, which includes an information collector deployed in the farmland to be irrigated and communicating with the cloud via a LORA+4G networking module, as well as a weather factor acquisition unit, a soil moisture sensor, a crop stem flow sensor, and a GPS time synchronization device connected to the information collector. The weather factor acquisition unit includes a sunshine sensor, a wind speed sensor, a rainfall sensor, and a weather station.

5. The intelligent irrigation system according to claim 4, characterized in that: The farmland irrigation execution module, the river channel opening and closing execution module, and the information acquisition module all include a solar power supply unit, which includes a solar panel, a rectifier and filter circuit, and a rechargeable battery connected in series. The output terminals of the rectifier and filter circuit and the rechargeable battery are both connected to the farmland irrigation execution module, the river channel opening and closing execution module, or the information acquisition module. Priority-defined cloud-based programmable switches are connected to the rectifier filter circuit and the rechargeable battery, respectively.

6. An irrigation method for an intelligent irrigation system as described in any one of claims 1-5, characterized in that: Includes the following steps: S1. Training the irrigation neural network model: S11. Collect planting information online or offline, and compile the planting information into a dataset: Planting information includes input information and corresponding output information. Input information includes plant species information, developmental stage information, sunshine, wind speed, rainfall, weather, crop stem flow information, and harvest information. Output information includes irrigation amount. S12. Divide the dataset into a training set and a validation set; S13. Input the training set into the irrigation neural network model to train the model; S14. After the model training is completed, input the input information from the test set into the irrigation neural network model, compare and determine whether the output information is the corresponding output information. If it is, proceed to the next step; otherwise, return to step S11. S2. Site Setup: S21. Adjust the position of the walking wheels according to the location of the ridges or the field. S22. Place the water pump into the irrigation canal; S3. Use the information collection module to collect the input information of planting information of the farmland to be irrigated, and input the collected input information into the irrigation neural network model in the cloud. The irrigation neural network model outputs the irrigation amount information per acre. S4. Calculate the opening value of the irrigation valve based on the irrigation amount per mu obtained in step S3, and control the valve opening of the irrigation electric actuator according to the calculated irrigation valve opening value. S5. Send an opening command to the opening and closing DC motor of the river channel opening and closing execution module via the cloud to open the river channel. The water in the river channel flows into the irrigation canal until the water level sensor in the irrigation canal collects the water level value and the set value. S6. Start the walking AC motor and water pump. During the walking process, the water pump will draw water out of the irrigation canal and spray the water vertically downward through the rain pipe. S7. When the set irrigation time is reached, turn off the AC motor and water pump, and seal the river channel by opening and closing the valve plate below the DC motor.

7. An irrigation method according to claim 6, characterized in that: Step S21 specifically includes the following steps: S211. Rotate the outer pressure ring. Under the action of the thread, the outer pressure ring and the inner tightening ring move relative to each other until the inner tightening ring and the outer pressure ring are released from the pressure. S212. Move the walking wheels along the axial direction of the rain pipe until the walking wheels are aligned with the field ridges or the field. S213. Rotate the outer pressure ring in the opposite direction until, under the action of the slope, the outer pressure ring presses the inner tightening ring back onto the rain pipe; Step S4 specifically includes the following steps: S41. Set the walking speed of the wheels. Number of farmland irrigation execution modules The length of the rain pipe in each farmland irrigation execution module Total irrigation time and total irrigated area The following formula is obtained: In the formula, The opening degree of the irrigation valve for the irrigation electric actuator; The flow rate of the irrigation valve in the electric irrigation actuator; This refers to the amount of irrigation water. The results were: ； S42, The irrigation main control chip marks the encoding position of the irrigation encoder to match 0%-100%; S43. After receiving the calculated irrigation valve opening value, the irrigation main control chip first determines the on / off state of the irrigation valve. If the irrigation valve is in the closed state, it sends an irrigation valve opening command to the irrigation DC motor. The irrigation DC motor drives the irrigation valve to open and continues to rotate until the irrigation encoder collects the irrigation valve opening value. If the irrigation valve is in the open state, it further compares the current opening value with the calculated opening value and drives the irrigation DC motor to rotate according to the comparison result until the opening value reaches the calculated opening value.

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