An Information Control Method for Energy-Saving and Environmentally Friendly Irrigation Systems

Abstract

The application relates to the technical field of water conservancy irrigation control, and particularly discloses an informationization control method for an energy-saving and environment-friendly water conservancy irrigation system, which comprises the following steps: step S1: through a wind detector arranged near a sprinkling head, key environmental parameters affecting irrigation work are collected in real time, and a reference working state of the sprinkling head and a target area are synchronously acquired; step S2: through the establishment of a space reference coordinate system, natural wind is abstracted into a calculable wind vector, and a water drop kinematics model based on physical laws is constructed; the model is inversely solved with the purpose of realizing the accurate falling of water drops to the target area, and the compensation amount of the sprinkling head angle and water pressure required for offsetting the influence of wind is accurately calculated; and step S3: according to the compensation amount obtained by solving, the initial working parameters of the sprinkling head are adjusted in real time, so that the water drop drift and evaporation caused by wind are effectively inhibited, the water resource utilization rate is significantly improved, and the purpose of energy saving and environmental protection is achieved.

Description

Technical Field

[0001] This invention relates to the field of water conservancy and irrigation control technology, specifically to an information-based control method for energy-saving and environmentally friendly water conservancy and irrigation systems. Background Technology

[0002] In modern agricultural production, sprinkler irrigation is a widely used common irrigation method. However, its actual effectiveness is significantly constrained by natural conditions. When the wind is strong, the water droplets, which are originally sprayed in a mist-like manner, are easily dispersed by the strong wind and then quickly evaporate into the air. Statistics show that under such unfavorable conditions, more than 20% of the water cannot effectively reach the crops and is wasted in the form of ineffective loss. This not only causes huge losses of water resources and increases agricultural production costs, but also reduces irrigation efficiency.

[0003] With increasing global water scarcity and growing public awareness of environmental protection, traditional extensive sprinkler irrigation methods are no longer sufficient to meet the demands of sustainable development in modern agriculture. To achieve precision irrigation, improve water resource utilization, and reduce unnecessary water loss, there is an urgent need to develop an information-based control method that can dynamically adjust irrigation strategies based on real-time environmental factors. This will optimize the operation of sprinkler irrigation systems, making them more energy-efficient and environmentally friendly. Summary of the Invention

[0004] The purpose of this invention is to provide an information control method for energy-saving and environmentally friendly water conservancy irrigation systems, and to solve the following technical problems.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] An information-based control method for energy-saving and environmentally friendly irrigation systems includes the following steps:

[0007] Step S1: Determine the irrigation outlet to be controlled, and set up a wind detector within a preset range of the irrigation outlet; obtain the target irrigation area, initial rotation angle and initial water pressure of the irrigation outlet, and obtain the wind direction and wind speed in real time through the wind detector;

[0008] Step S2: Establish a reference coordinate system, obtain the wind vector in the reference coordinate system according to the wind direction and wind speed, and establish a water droplet kinematic model in the reference coordinate system according to the initial rotation angle and initial water pressure; perform inverse solution in the reference coordinate system according to the target irrigation area to obtain the deflection angle compensation and water pressure compensation.

[0009] Step S3: Compensate the initial rotation angle and initial water pressure of the sprinkler nozzle according to the deflection angle compensation amount and water pressure compensation amount.

[0010] As a further aspect of the present invention: the process of determining the preset range includes:

[0011] Obtain the height H of the sprinkler outlet, and based on historical weather data, obtain the expected maximum wind speed V at the sprinkler outlet. max The radius of the range is obtained based on the height and the expected maximum wind speed: L = k × H × log(V). max +1), where k is an empirical coefficient, k∈[1.5, 2.5]; a circular range is obtained with the sprinkler outlet as the center and the range radius as the radius, which is the preset range.

[0012] As a further aspect of the present invention: the spray axis of the sprinkler nozzle is obtained, and the central angle of the fan-shaped area swept by the spray axis to reach the target irrigation area under windless conditions is obtained and recorded as the initial rotation angle; the water pressure that makes the water droplets sprayed by the sprinkler nozzle just reach the edge of the target irrigation area under windless conditions is obtained and recorded as the initial water pressure.

[0013] As a further aspect of the present invention: the process of obtaining the wind vector includes:

[0014] Using true north in the reference coordinate system as the 0-degree reference, the real-time wind direction collected by the wind detector is converted into an angle relative to the 0-degree reference, denoted as wind direction angle θ; based on the wind direction angle θ and wind speed v, the X-axis component V is obtained in the reference coordinate system. wx =v×sinθ, obtain the y-component V. wy =v×cosθ, to obtain the component combination (V wx V wy The components are combined and converted into a two-dimensional plane wind vector in the reference coordinate system to obtain the wind vector.

[0015] As a further aspect of the present invention: the process of establishing the water droplet kinematic model includes:

[0016] The initial position (x0, y0, z0) of the water droplet is marked as the position of the center of the water outlet in the reference coordinate system; the initial velocity vector (Sp) of the water droplet is obtained based on the initial rotation angle and initial water pressure of the water outlet. x0 Sp y0 Sp z0 );

[0017] In the reference coordinate system, the water droplet is subjected to a gravitational force vector with a vertically downward direction and a magnitude of G = mg, where m is the average mass of the water droplet and g is the gravitational acceleration; and the water droplet is subjected to a force vector with a magnitude of F = 0.5ρ × Cd × A × Vr, which is opposite to the direction of motion of the water droplet relative to the air. 2The air resistance force vector is given by ρ, where ρ is the air density, Cd is the drag coefficient of the water droplet, A is the windward cross-sectional area of ​​the water droplet, and Sp is the relative velocity between the water droplet and the air, which is obtained by subtracting the wind vector from the initial velocity vector.

[0018] According to Newton's second law, by simultaneously solving the force vectors of gravity and air resistance, we can establish the differential equation of motion of the water droplet in the reference coordinate system. , where r represents the three-dimensional coordinates of the water droplet in the reference coordinate system, and t is the time difference between the current time and the moment the water droplet leaves the sprinkler nozzle; the motion differential equation is solved by numerical integration to obtain the trajectory of the water droplet over time.

[0019] As a further aspect of the present invention: the reverse solution process includes:

[0020] Obtain the position coordinates of the center point of the target irrigation area in the reference coordinate system, and denote them as the endpoint; set constraints, wherein the endpoint is on the trajectory of the water droplet; take the coordinates of the endpoint, the center point of the sprinkler, the gravity force vector, and the air resistance force vector as inputs, and input them into the water droplet kinematic model for inversion and solution to obtain the target velocity vector that satisfies the constraints, wherein the target velocity vector is the velocity vector required to ensure that the water droplet reaches the endpoint and leaves the sprinkler.

[0021] As a further aspect of the present invention: the process of obtaining the deflection angle compensation and water pressure compensation includes:

[0022] Obtain the horizontal component of the target velocity vector, denoted as the target rotation angle, and determine the target water pressure at the sprinkler nozzle based on the magnitude of the target velocity vector; subtract the target rotation angle from the initial rotation angle to obtain the deflection angle compensation amount, and subtract the target water pressure from the initial water pressure to obtain the water pressure compensation amount.

[0023] As a further aspect of the present invention: the deflection angle compensation amount is converted into a pulse signal for driving the rotary motor of the irrigation nozzle, and the water pressure compensation amount is converted into an opening signal for adjusting the water pipe pressure valve; the rotary motor drives the irrigation nozzle to rotate around the spray axis according to the pulse signal, and the water pipe pressure valve adjusts the actual water pressure of the irrigation nozzle according to the opening signal.

[0024] The beneficial effects of this invention are:

[0025] This invention, by establishing a precise water droplet kinematic model and employing a reverse algorithm, can calculate in real time the precise compensation required to offset the effects of specific wind forces and drive the actuator to make rapid adjustments. This directly leads to a significant improvement in water resource utilization efficiency, effectively suppressing water droplet drift losses caused by wind and evaporation, and is estimated to reduce ineffective water use by more than 20%. Furthermore, by ensuring irrigation uniformity, this invention guarantees a consistent crop growth environment, indirectly promoting improved agricultural output and reducing energy consumption and production costs caused by over-irrigation to compensate for wind losses. It also has the potential to achieve regional collaborative control through optimized algorithms, thus providing strong technical support for the sustainable development needs of water-saving, energy-saving, and environmentally friendly modern agriculture. Attached Figure Description

[0026] The invention will now be further described with reference to the accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the structure of an information control method for an energy-saving and environmentally friendly irrigation system according to the present invention. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1 As shown, this invention is an information control method for energy-saving and environmentally friendly irrigation systems, comprising the following steps:

[0030] Step S1: Determine the irrigation outlet to be controlled, and set up a wind detector within a preset range of the irrigation outlet; obtain the target irrigation area, initial rotation angle and initial water pressure of the irrigation outlet, and obtain the wind direction and wind speed in real time through the wind detector;

[0031] Specifically, the target sprinkler unit to be subject to wind resistance control is identified from the irrigation system network, and its spatial coordinates are recorded. A miniature ultrasonic wind detector is installed upwind of the sprinkler unit's jet axis at a distance of 1.5 to 2.5 times the height of the sprinkler nozzle, ensuring that its sensing direction is consistent with the center height of the sprinkler nozzle and is unobstructed. The boundary coordinates of the target irrigation area corresponding to the sprinkler unit, the reference rotation angle under windless conditions, and the rated working water pressure are used as initial parameters. The wind detector is activated to collect real-time wind speed and direction data of the current environment at a sampling frequency of not less than 1Hz.

[0032] In a preferred embodiment of the present invention, the process of determining the preset range includes:

[0033] Obtain the height H of the sprinkler outlet, and based on historical weather data, obtain the expected maximum wind speed V at the sprinkler outlet. max The radius of the range is obtained based on the height and the expected maximum wind speed: L = k × H × log(V). max +1), where k is an empirical coefficient, k∈[1.5, 2.5]; a circular range is obtained with the sprinkler outlet as the center and the range radius as the radius, which is the preset range;

[0034] Specifically, when setting up the wind sensor, the installation height of its sensing part should be consistent with the center height of the sprinkler outlet, and there should be no obstacles obstructing it from the sprinkler outlet to ensure the accuracy and representativeness of the collected wind field data. The height of the sprinkler outlet determines the boundary layer characteristics affected by friction when the wind approaches the ground. The higher the nozzle, the less interference from the ground, requiring more free-flowing wind speed data to be obtained at a greater distance upwind. The stronger the wind, the greater its influence range and turbulence intensity, thus requiring a greater distance for early detection and response.

[0035] It should be noted that the empirical coefficients are determined based on experimental and data fitting methods, the process of which includes:

[0036] In a wind tunnel laboratory and several typical outdoor irrigation sites, including plain farmland, hilly orchards, and urban green spaces, several sprinkler heads at different heights were set up. A set of wind speed and direction sensors were arranged at different distances upwind of each sprinkler head to measure the real wind field data at the location of the sprinkler head. Different wind speed conditions were simulated in the wind tunnel or created in the natural environment, covering the range from light wind to strong wind, such as [1 m / s, 8 m / s]. Sprinkler heads at different heights were paired with different test wind speeds to obtain several test groups.

[0037] The data measured by the sensor at a certain distance upwind is compared with the actual data measured by the sensor at the nozzle. If the linear correlation coefficient between the wind speed at that location and the wind speed at the nozzle is greater than 0.95, and the average absolute error between the wind direction at that location and the wind direction at the nozzle is less than 10 degrees, then that distance is recorded as the optimal preset distance; and the optimal preset distance for each test group is obtained.

[0038] Based on the boundary layer principle of fluid mechanics, it is assumed that there is a functional relationship between the radius L, the height H, and the test wind speed V. By observing the data trend, the fitting model framework is determined. The model framework should be able to reflect the linear growth of L with H and the logarithmic growth with V, which is in line with physical intuition. The optimal preset distance corresponding to each test group is input into the model framework, and regression analysis is performed using the least squares method to solve for the empirical coefficient k value that minimizes the overall error.

[0039] It is worth noting that the fitting process found that for short and dense crops, the optimal k value is concentrated in the range of 1.5 to 1.8; for tall and sparse crops or open land without shade, the optimal k value is concentrated in the range of 2.0 to 2.5. Therefore, the universal range of k is determined to be 1.5 to 2.5 to cover most application scenarios. Users can select an initial value within this range for fine-tuning according to the specific application environment.

[0040] It is worth noting that several sprinkler outlets can share a single wind sensor. When several sprinkler outlets are detected to be within a preset uniform wind field area, a collaborative control mode can be activated. The sprinkler outlet with the most representative location in this area is selected as the master node, and its associated wind sensor is designated as the master wind sensor. A control association is established between the master wind sensor and other sprinkler outlets in the area, and the other sprinkler outlets are designated as slave nodes. The wind vector data collected by the master wind sensor will be used as shared parameters and distributed in real time to all associated slave sprinkler outlets via a local area network communication module. All sprinkler outlets will use the same wind vector data in subsequent modeling and solution calculations.

[0041] In a preferred embodiment of the present invention, the spray axis of the sprinkler nozzle is obtained, and the central angle of the fan-shaped area swept by the spray axis to reach the target irrigation area under windless conditions is obtained and recorded as the initial rotation angle; the water pressure that makes the water droplets sprayed by the sprinkler nozzle just reach the edge of the target irrigation area under windless conditions is obtained and recorded as the initial water pressure.

[0042] Step S2: Establish a reference coordinate system, obtain the wind vector in the reference coordinate system according to the wind direction and wind speed, and establish a water droplet kinematic model in the reference coordinate system according to the initial rotation angle and initial water pressure; perform inverse solution in the reference coordinate system according to the target irrigation area to obtain the deflection angle compensation and water pressure compensation.

[0043] Specifically, a three-dimensional rectangular coordinate system is established with the installation base point of the target sprinkler inlet as the origin, due north as the positive Y-axis, due east as the positive X-axis, and the vertical upward direction as the positive Z-axis. The wind direction data collected by the wind detector is converted into an azimuth angle relative to due north. Combined with wind speed data, the wind vector in the coordinate system is obtained through vector decomposition calculation. Based on the initial rotation angle and initial water pressure, the initial spray vector of the water droplets is determined. Taking into account gravitational acceleration, air resistance, and the aforementioned wind vector, a kinematic model describing the trajectory of the water droplets in the air is established. Using the coordinates of the center point of the target irrigation area as the desired landing point, these coordinates are substituted into the kinematic model for inverse solving. A numerical iterative algorithm is used to calculate the sprinkler inlet deflection angle compensation and water pressure compensation required to offset wind disturbance and ensure the water droplets accurately reach the target point.

[0044] In a preferred embodiment of the present invention, the process of obtaining the wind vector includes:

[0045] Using true north in the reference coordinate system as the 0-degree reference, the real-time wind direction collected by the wind detector is converted into an angle relative to the 0-degree reference, denoted as wind direction angle θ; based on the wind direction angle θ and wind speed v, the X-axis component V is obtained in the reference coordinate system. wx =v×sinθ, obtain the y-component V. wy =v×cosθ, to obtain the component combination (V wx V wy The components are combined and converted into a two-dimensional planar wind vector in the reference coordinate system to obtain the wind vector;

[0046] In a preferred embodiment of the present invention, the process of establishing the water droplet kinematic model includes:

[0047] The initial position (x0, y0, z0) of the water droplet is marked as the position of the center of the water outlet in the reference coordinate system; the initial velocity vector (Sp) of the water droplet is obtained based on the initial rotation angle and initial water pressure of the water outlet. x0 Sp y0 Sp z0 );

[0048] In the reference coordinate system, the water droplet is subjected to a gravitational force vector with a vertically downward direction and a magnitude of G = mg, where m is the average mass of the water droplet and g is the gravitational acceleration; and the water droplet is subjected to a force vector with a magnitude of F = 0.5ρ × Cd × A × Vr, which is opposite to the direction of motion of the water droplet relative to the air. 2The air resistance force vector is given by ρ, where ρ is the air density, Cd is the drag coefficient of the water droplet, A is the windward cross-sectional area of ​​the water droplet, and Sp is the relative velocity between the water droplet and the air, which is obtained by subtracting the wind vector from the initial velocity vector.

[0049] According to Newton's second law, by simultaneously solving the force vectors of gravity and air resistance, we can establish the differential equation of motion of the water droplet in the reference coordinate system. , where r represents the three-dimensional coordinates of the water droplet in the reference coordinate system, and t is the time difference between the current time and the moment the water droplet leaves the sprinkler nozzle; the motion differential equation is solved by numerical integration to obtain the trajectory of the water droplet over time;

[0050] It should be noted that the water droplet resistance coefficient Cd is closely related to the water droplet size distribution and is not a fixed constant. The water droplet resistance coefficient needs to be measured by laboratory wind tunnel test on the water droplet size spectrum generated by the sprinkler nozzle under rated working pressure, and the empirical relationship Cd(d) between Cd value and water droplet equivalent diameter d is fitted to obtain the resistance coefficient dynamically adjusted according to the particle size of simulated water droplets in the model calculation.

[0051] During numerical integration, an adaptive step size control mechanism needs to be set up. When a rapid change in the direction of the water droplet velocity vector is detected (such as passing through a strong shear wind zone at the edge of the jet), the integration time step is automatically reduced to ensure computational stability. Conversely, the step size can be increased in the smooth trajectory section to improve computational efficiency. All simulated trajectories need to be compared and verified with the actual water droplet trajectories captured by the high-speed camera until the simulation error is less than the preset tolerance, which is generally 5%, before the model is considered valid.

[0052] In a preferred embodiment of the present invention, the reverse solution process includes:

[0053] Obtain the position coordinates of the center point of the target irrigation area in the reference coordinate system, and record them as the endpoint; set constraints, the constraint condition being that the endpoint is on the trajectory of the water droplet; take the coordinates of the endpoint, the center point of the sprinkler outlet, the gravity force vector, and the air resistance force vector as inputs, and input them into the water droplet kinematics model for inversion and solution to obtain the target velocity vector that satisfies the constraints, the target velocity vector being the velocity vector required to ensure that the water droplet reaches the endpoint and leaves the sprinkler outlet;

[0054] It should be noted that before performing the reverse solution process, the existence of the solution needs to be pre-judged. By analyzing the relative position of the target endpoint and the sprinkler head and the current wind vector, it is preliminarily determined whether there is a reachable trajectory at the physical level. If the endpoint is located outside the envelope of the sprinkler head jet, the current calculation is terminated and a target unreachable alarm is triggered, prompting the user to adjust the irrigation parameters to avoid meaningless iterative calculations.

[0055] It is worth noting that if the inversion solution yields several solutions, the objective function values ​​of each solution are compared. The objective function value can be the distance between the end of the trajectory and the target point. Finally, the solution with the smallest objective function value that meets the accuracy requirements is selected as the optimal target velocity vector.

[0056] In a preferred embodiment of the present invention, the process of obtaining the deflection angle compensation and water pressure compensation includes:

[0057] Obtain the horizontal component of the target velocity vector, denoted as the target rotation angle, and determine the target water pressure at the sprinkler nozzle based on the magnitude of the target velocity vector; subtract the target rotation angle from the initial rotation angle to obtain the deflection angle compensation amount, and subtract the target water pressure from the initial water pressure to obtain the water pressure compensation amount;

[0058] Step S3: Compensate the initial rotation angle and initial water pressure of the sprinkler nozzle according to the deflection angle compensation amount and water pressure compensation amount;

[0059] In a preferred embodiment of the present invention, the deflection angle compensation is converted into a pulse signal for driving the rotary motor of the irrigation nozzle, and the water pressure compensation is converted into an opening signal for adjusting the water pipe pressure valve; the rotary motor drives the irrigation nozzle to rotate around the spray axis according to the pulse signal, and the water pipe pressure valve adjusts the actual water pressure of the irrigation nozzle according to the opening signal.

[0060] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the present invention should still fall within the scope of the invention.

Claims

1. An information control method for an energy-saving and environment-friendly water conservancy irrigation system, characterized in that, The method comprises the following steps: Step S1: determining a sprinkler to be controlled, and setting up a wind detector within a preset range of the sprinkler; obtaining a target irrigation area, an initial rotation angle and an initial water pressure of the sprinkler, and obtaining a wind direction and a wind speed in real time through the wind detector; Step S2: establishing a reference coordinate system, obtaining a wind vector in the reference coordinate system according to the wind direction and the wind speed, and establishing a water droplet kinematics model in the reference coordinate system according to the initial rotation angle and the initial water pressure; obtaining a deflection angle compensation and a water pressure compensation in the reference coordinate system according to the target irrigation area through reverse solving; Step S3: compensating the initial rotation angle and the initial water pressure of the sprinkler according to the deflection angle compensation and the water pressure compensation; In step S2, the process of establishing the water droplet kinematics model comprises: A position coordinate corresponding to a center of a water outlet of the sprinkling head in the reference coordinate system is marked as an initial position (x0, y0, z0) of the water droplet; an initial speed vector (Sp x0 , Sp y0 , Sp z0 ) of the water droplet is obtained according to an initial rotation angle and an initial water pressure of the sprinkling head; In the reference coordinate system, a force vector of gravity G = mg is added to the water droplet, where m is the average mass of the water droplet and g is the acceleration of gravity; and a force vector of air resistance F = 0.5 p x Cd x A x Vr is added to the water droplet, where p is the air density, Cd is the resistance coefficient of the water droplet, A is the cross-sectional area of the water droplet facing the wind, and Sp is the relative speed of the water droplet with respect to the air, which is obtained by subtracting the wind vector from the initial speed vector. 2 In the reference coordinate system, a force vector of gravity G = mg is added to the water droplet, where m is the average mass of the water droplet and g is the acceleration of gravity; and a force vector of air resistance F = 0.5 p x Cd x A x Vr is added to the water droplet, where p is the air density, Cd is the resistance coefficient of the water droplet, A is the cross-sectional area of the water droplet facing the wind, and Sp is the relative speed of the water droplet with respect to the air, which is obtained by subtracting the wind vector from the initial speed vector. According to Newton's second law, the motion differential equation of the water droplet in the reference coordinate system is established by combining the gravity force vector and the air resistance force vector wherein r represents the three-dimensional coordinates of the water droplet in the reference coordinate system, and t is the time difference between the current time and the time when the water droplet leaves the sprinkler; the motion differential equation is solved by a numerical integration method to obtain the motion trajectory of the water droplet over time; In step S2, the process of reverse solving comprises: obtaining a position coordinate corresponding to a center point of the target irrigation area in the reference coordinate system, denoted as a terminal point; setting a constraint condition that the terminal point is on a water droplet motion trajectory; taking the terminal point, a coordinate corresponding to a center point of the sprinkler, a gravity force vector and an air resistance force vector as inputs, and inputting them into the water droplet kinematics model to perform inverse solving, so as to obtain a target velocity vector satisfying the constraint condition, the target velocity vector being a velocity vector required for water droplets to reach the terminal point when leaving the sprinkler.

2. The information control method for energy-saving and environment-friendly water conservancy irrigation system according to claim 1, characterized in that, In step S1, the process of determining the preset range comprises: Obtain the height H of the sprinkler outlet, and based on historical weather data, obtain the expected maximum wind speed V at the sprinkler outlet. max The radius of the range is obtained based on the height and the expected maximum wind speed: L = k × H × log(V). max +1), where k is an empirical coefficient, k∈[1.5, 2.5]; a circular range is obtained with the sprinkler outlet as the center and the range radius as the radius, which is the preset range.

3. The information-based control method for energy-saving and environment-friendly water conservancy irrigation system according to claim 1, characterized in that, In step S1, an injection axis of the sprinkler is obtained, and a central angle corresponding to a sector region swept by the injection axis to reach the target irrigation area under a windless condition is obtained, denoted as an initial rotation angle; a water pressure under the windless condition, at which water droplets sprayed by the sprinkler just reach an edge of the target irrigation area, is obtained, denoted as an initial water pressure.

4. The information-based control method for energy-saving and environment-friendly water conservancy irrigation systems according to claim 1, characterized in that, In step S2, the process of obtaining the wind vector comprises: With the north direction in the reference coordinate system as a 0-degree reference, convert the real-time wind direction collected by the wind detector into an angle relative to the 0-degree reference, denoted as a wind direction angle θ; according to the wind direction angle θ and a wind speed v, obtain a component V wx =x sin θ on the X-axis and a component V wy =y cos θ on the Y-axis in the reference coordinate system, and obtain a component combination (V wx , V wy ); convert the component combination into a two-dimensional plane wind vector under the reference coordinate system to obtain a wind vector.

5. The information-based control method for energy-saving and environment-friendly water conservancy irrigation system according to claim 1, characterized in that, In step S2, the process of obtaining the deflection angle compensation and the water pressure compensation comprises: obtaining a component of the target velocity vector in a horizontal direction, denoted as a target rotation angle, and determining a target water pressure of the sprinkler according to a size of the target velocity vector; obtaining a deflection angle compensation by subtracting the initial rotation angle from the target rotation angle, and obtaining the water pressure compensation by subtracting the initial water pressure from the target water pressure.

6. The information-based control method for energy-saving and environment-friendly water conservancy irrigation systems according to claim 1, characterized in that, In step S3, the deflection angle compensation is converted into a pulse signal for driving a rotation motor of the sprinkler, and the water pressure compensation is converted into an opening degree signal for adjusting a water pipe pressure valve; The rotation motor drives the sprinkler to rotate around the injection axis according to the pulse signal, and the water pipe pressure valve adjusts an actual water pressure of the sprinkler according to the opening degree signal.

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