Slope confluence and water collection irrigation device with flexible photovoltaic panel lifting function and slope confluence and water collection irrigation method

Abstract

The invention discloses a slope confluence and water collection irrigation device and method containing flexible photovoltaic panel lifting, and belongs to the technical field of irrigation engineering, the device comprises a water collection irrigation mechanism, a power generation mechanism, a retracting and releasing mechanism and a supporting mechanism, the water collection irrigation mechanism is connected with the power generation mechanism and the retracting and releasing mechanism, and the supporting mechanism is installed below the water collection irrigation mechanism. According to the slope confluence and water collection irrigation device and method containing flexible photovoltaic panel lifting, the flexible photovoltaic panel can be automatically folded when not working, damage caused by the sun to the slope confluence and water collection irrigation device is avoided, the high-precision inclination sensor and the flexible pressure sensor are installed on the water collection film, the pressure of collected rainwater is monitored, and the water collection effect is improved. And by adjusting the angle and height of the water collecting film, the water flow is guided to the middle of the film to the maximum extent, the device can be suitable for the karst landform, and maximum water collection is achieved.

Description

Technical Field

[0001] This invention relates to the field of irrigation engineering technology, and in particular to a slope water collection and irrigation device and method that includes flexible photovoltaic panels for lifting. Background Technology

[0002] Karst landforms are formed by the erosion of soluble rocks, with numerous fissures and caves. Rainwater can easily infiltrate through karst channels, resulting in short surface runoff retention and low runoff efficiency.

[0003] Traditional slope runoff irrigation technology faces three major challenges: First, its design is rudimentary, failing to consider the impact of rock fissures, resulting in poor adaptability between the catchment slope and the terrain. Second, it is highly energy-dependent, with external power grids or diesel engines being costly in complex terrains. Third, it lacks intelligent control, unable to dynamically adjust catchment parameters during heavy rainfall and struggling to provide precise irrigation during droughts. Furthermore, the impermeable materials are not optimized for rough rock surfaces, leading to a catchment efficiency more than 40% lower than in non-karst areas. This creates a vicious cycle of "abundant rainfall but water shortage, high irrigation demand but high costs," severely hindering the sustainable development of mountainous farmland. Summary of the Invention

[0004] The purpose of this invention is to provide a slope water collection and irrigation device and method that includes flexible photovoltaic panels. By using flexible photovoltaic panels, the device can automatically retract when not in use to avoid damage from the sun. A high-precision tilt sensor and a flexible pressure sensor are installed on the water collection membrane to monitor the pressure of collected rainwater. By adjusting the angle and height of the water collection membrane, the water flow is directed to the center of the membrane to the maximum extent. This invention is suitable for karst landforms and achieves maximum water collection. Furthermore, by establishing a mathematical model, the water collection volume and effective water collection area can be accurately calculated, reducing the error of traditional empirical estimation. A genetic algorithm is used to optimize the parameter combination, screen Pareto front solutions, and balance the contradictory objectives of water collection volume (V) and water collection area (A), ensuring maximum efficiency with limited resources.

[0005] To achieve the above objectives, the present invention provides a slope water collection and irrigation device including a flexible photovoltaic panel lifting mechanism, comprising a water collection and irrigation mechanism, a power generation mechanism, a receiving and discharging mechanism, and a support mechanism. The water collection and irrigation mechanism is connected to the power generation mechanism and the receiving and discharging mechanism respectively. A support mechanism is installed below the water collection and irrigation mechanism. The water collection and irrigation mechanism includes a water collection membrane, a high-altitude water collection component, and a low-altitude water collection component. The water collection membrane is connected to the low-altitude water collection component through a groove-shaped connector. The low-altitude water collection component is connected to the high-altitude water collection component through a water supply pipe. The low-altitude water collection component is connected to the power generation mechanism. A bracket is installed at the bottom of the water collection membrane, and high-precision tilt sensors are installed at the edge and center of the water collection membrane. A flexible pressure sensor is arranged on the lower surface of the water collection membrane.

[0006] Preferably, the low-altitude water collection component includes a low-altitude engineering tank and a first free irrigation mechanism, with the low-altitude engineering tank connected to the first free irrigation mechanism; the high-altitude water collection component includes a high-altitude engineering tank and a second free irrigation mechanism, with the high-altitude engineering tank and the second free irrigation mechanism connected.

[0007] Preferably, the power generation mechanism includes photovoltaic power generation components and wind power generation components. The photovoltaic power generation components include a photovoltaic water pump, a motor, a flexible photovoltaic panel, and a photovoltaic power generation automatic tracking control system. The motor is connected to the photovoltaic water pump, the photovoltaic water pump is connected to the water supply pipe, and the photovoltaic water pump is connected to the photovoltaic power generation automatic tracking control system through a controller. The photovoltaic power generation automatic tracking control system is electrically connected to the flexible photovoltaic panel, and the wind power generation components are connected to the low-altitude engineering tank.

[0008] Preferably, the launching and receiving mechanism includes a cylinder and a cylinder drive motor, the cylinder is connected to the output shaft of the cylinder drive motor, and the cylinder is connected to one side of the water collection membrane; The support mechanism includes a bracket, a linear track, obstacles, and an infrared sensor. The bracket is slidably connected to the track, and obstacles are provided at both ends of the track. An infrared sensor is installed at the bottom of the bracket, and a cylinder is installed on the bracket.

[0009] Preferably, the bracket includes a large sleeve, a small sleeve, and an angle adjustment component. A first mounting groove is provided in the middle of the large sleeve, a small sleeve is installed in the first mounting groove, a second mounting groove is provided in the small sleeve, and the angle adjustment component is located in the second mounting groove. The large sleeve is equipped with a lead screw drive motor. The rotating part of the lead screw drive motor is fixedly connected to the lead screw. The small sleeve is placed inside the large sleeve, and a first through hole is opened in the middle of the small sleeve. The first through hole has a thread that matches the lead screw. The lead screw passes through the first through hole and is rotatably connected to the small sleeve. Limiting blocks are provided at both ends of the small sleeve. The limiting blocks are placed in the limiting groove, which is located on the inner wall of the large sleeve. The angle adjustment assembly includes a rotary robotic arm and a rotary motor. The output shaft of the rotary motor passes through a second through hole opened on the side wall of the small sleeve and is fixedly connected to the rotary robotic arm. The other end of the rotary robotic arm is connected to a connecting rod, which is rotatably connected to the side wall of the small sleeve.

[0010] The present invention also provides a slope water collection and irrigation method including flexible photovoltaic panel lifting, applied to the above-mentioned slope water collection and irrigation device including flexible photovoltaic panel lifting, comprising the following steps: S1. Establish a mathematical model; S2. Optimize the mathematical model using algorithms; S3. Select the optimal solution of the optimized mathematical model to obtain the effective water collection area and water collection volume, and build a device for water collection and irrigation.

[0011] Preferably, the specific operation of S1 is as follows: setting parameters and calculating water collection volume; The parameters are: precipitation P (mm / h), slope α (°), angle θ between the water collection membrane and the slope (°), width W (m), length L (m), and height H (m) of the support perpendicular to the slope.

[0012] Preferably, the formula for calculating the length L of the water collection membrane in S1 is: ; The formula for calculating the area of ​​the water collection film is: (1); The formula for calculating the effective catchment area is: (2); The formula for calculating water collection volume is: (3); Combining equations (1) and (2), we obtain the original multi-objective function expression: .

[0013] Preferably, in S2, the theoretical optimal solution is θ = -α by taking the derivative of V with respect to θ and setting the derivative to zero. However, since actual installation requires θ ≥ 0, an optimization algorithm is used to solve for the optimal parameter combination within the feasible range. The specific operation of S2 is as follows: S21. Set the parameter range as θ∈[0, 90°-ɑ], H∈[H min H max ]; S22. Use a genetic algorithm to generate a candidate solution set, and calculate the corresponding V and A values ​​for each (H, θ) combination; S23, Maximize water volume V max and minimizing membrane area V min The significant differences in dimensions and numerical ranges mean that direct weighted summation can lead to a certain objective dominating the optimization result, which may affect the maximization of water volume V. max and minimizing membrane area V min The two quantities are normalized to obtain the mathematical model: .

[0014] Preferably, the specific operation of S23 is as follows: S231. After generating the Pareto solution set using a genetic algorithm, draw a graph showing the relationship between V and A, and mark the key regions. S232. Connect the non-dominated solutions with the red curve to draw the Pareto front curve. The actual ideal point is located in the middle of the Pareto front curve. It is a boundary point that is not dominated by other solutions. That is, there is no other solution that is better than this boundary point in both objectives V and A. Select it as the final optimal solution.

[0015] Therefore, the present invention employs the above-mentioned slope water collection and irrigation device and method including flexible photovoltaic panel lifting, which has the following beneficial effects: (1) By establishing a mathematical model (parameters include precipitation, slope, water collection film angle, etc.), the water collection volume and effective water collection area can be accurately calculated, reducing the error of traditional empirical estimation. The genetic algorithm is used to optimize the parameter combination, screen the Pareto front solution, balance the contradictory objectives of water collection volume (V) and water collection area (A), and ensure that efficiency is maximized under limited resources.

[0016] (2) The device integrates a photovoltaic power generation automatic tracking control system and a photovoltaic water pump, which is driven by solar energy, reducing dependence on traditional energy sources and is suitable for remote areas without grid coverage; (3) By using flexible photovoltaic panels, they can be automatically retracted when not in use to avoid damage from the sun. The water collection membrane is equipped with high-precision tilt sensors and flexible pressure sensors to monitor the pressure of collected rainwater. By adjusting the angle and height of the water collection membrane, the water flow is directed to the middle of the membrane to the maximum extent. It is suitable for karst landforms and can achieve the maximum amount of water collection.

[0017] 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

[0018] Figure 1 This is a schematic diagram of the device structure of an embodiment of the slope water collection and irrigation device and method including flexible photovoltaic panel lifting according to the present invention. Figure 2 This is a schematic diagram of the support structure of an embodiment of the slope water collection and irrigation device and method including flexible photovoltaic panel lifting according to the present invention; Figure 3 This is the Pareto front curve of an embodiment of the slope water collection and irrigation device and method including flexible photovoltaic panel lifting according to the present invention.

[0019] Figure Labels 1. Water collection membrane; 2. Connector; 3. Low-altitude engineering tank; 4. First free irrigation mechanism; 5. Low-altitude irrigation area; 6. Photovoltaic power generation automatic tracking control system; 7. Controller; 8. Motor; 9. Photovoltaic water pump; 10. Battery; 11. High-altitude engineering tank; 12. Water delivery pipe; 13. High-altitude irrigation area; 14. Second free irrigation mechanism; 12. Large sleeve; 13. Small sleeve; 14. Rotary robotic arm; 15. Rotary motor; 16. Lead screw drive motor; 17. Lead screw; 18. Limit block; 19. Connecting rod. Detailed Implementation

[0020] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figure 1 As shown, the present invention provides a slope water collection and irrigation device including flexible photovoltaic panel lifting, comprising a water collection and irrigation mechanism, a power generation mechanism, a collection and dispensing mechanism, and a support mechanism. The water collection and irrigation mechanism is connected to the power generation mechanism and the collection and dispensing mechanism respectively. The support mechanism is installed below the water collection and irrigation mechanism. The water collection and irrigation mechanism is used to collect rainwater and irrigate crops, etc. The power generation mechanism is used to lift water from the low-altitude irrigation area 5 to the high-altitude irrigation area 13 for irrigation. The collection and dispensing mechanism is used to collect and dispensing the water collection membrane 1. The support mechanism is used to support the water collection and irrigation mechanism.

[0023] The water collection irrigation system includes a water collection membrane 1, a high-altitude water collection component, and a low-altitude water collection component. The bottom of the water collection membrane 1 is equipped with multiple supports. The supports are made of aluminum alloy and are divided into multi-sleeve structures. They have a built-in motor-driven telescopic mechanism. The motor-driven telescopic mechanism is set up with a structure that is in the technology to realize the automatic adjustment of the height (H) and angle (θ) of the water collection membrane 1.

[0024] High-precision tilt sensors are evenly installed at the edges and center of the water collection membrane 1, and flexible pressure sensors are arranged on the lower surface of the water collection membrane 1. As the core component of water collection, the water collection membrane 1 has supports installed at its four corners to support its sloping surface laying. The high-precision tilt sensors at the edges and center monitor the tilt angle of the membrane in real time. The flexible pressure sensors on the lower surface are used to sense the weight of the collected water and the water flow distribution to ensure water collection efficiency and membrane stability. The signals from the flexible pressure sensors and the high-precision tilt sensors are integrated, and the analog signals are converted into digital signals by a converter and transmitted to the control system, enabling the flexible pressure sensors and the high-precision tilt sensors to identify and operate.

[0025] The water collection membrane 1 is connected to the low-altitude water collection component through the grooved connector 2. The low-altitude water collection component is connected to the high-altitude water collection component through the water supply pipe 12. The low-altitude water collection component is connected to the power generation mechanism.

[0026] The low-altitude water collection component includes a low-altitude engineering tank 3 and a first free irrigation mechanism 4. The low-altitude engineering tank 3 is connected to the first free irrigation mechanism 4. The low-altitude engineering tank 3 is used to store water collected in the low-altitude irrigation area 5. The first free irrigation mechanism 4 can directly irrigate crops at low altitudes. At the same time, it is connected to the high-altitude component through the water delivery pipe 12 to realize the cross-altitude allocation of water resources.

[0027] The high-altitude water collection component includes a high-altitude engineering tank 11 and a second free irrigation mechanism 14, which are connected together. The high-altitude engineering tank 11 is used to store water collected in the high-altitude irrigation area 13, and the second free irrigation mechanism 14 can automatically irrigate crops on higher slopes as needed, adapting to different altitude planting scenarios. The first free irrigation mechanism 4 and the second free irrigation mechanism 14 are existing structures and will not be described in detail.

[0028] The support mechanism includes a bracket, a linear track, obstacles, and infrared sensors. The bracket is slidably connected to the track, and obstacles are provided at both ends of the track. An infrared sensor is installed at the bottom of the bracket, and a cylinder is mounted on the bracket. The linear track at the bottom of the bracket enables automatic movement of the bracket on the linear track using existing equipment. The end point of the track is located parallel to the groove connector 2, and an obstacle is placed at the end point. An infrared sensor is installed at the bottom of the bracket; when the infrared sensor detects an obstacle, it immediately decelerates to a stop. Similarly, an obstacle is also placed at the beginning of the track; when the infrared sensor detects an obstacle at the beginning, it immediately decelerates to a stop.

[0029] like Figure 2As shown, the bracket includes a large sleeve 12, a small sleeve 13, and an angle adjustment assembly. A first mounting groove is formed in the middle of the large sleeve 12, and the small sleeve 13 is installed in the first mounting groove. A second mounting groove is formed inside the small sleeve 13, and the angle adjustment assembly is located in the second mounting groove. A lead screw drive motor 16 is installed inside the large sleeve 12. The rotating part of the lead screw drive motor 16 is fixedly connected to a lead screw 17, and the lead screw drive motor 16 drives the lead screw 17 to rotate. The small sleeve 13 is placed inside the large sleeve 12, and a first through hole is opened in the middle of the small sleeve 13. The first through hole has a thread that matches the lead screw 17. The lead screw 17 passes through the first through hole. Limiting blocks 18 are provided at both ends of the small sleeve 13. The limiting blocks 18 are placed in the limiting groove. The limiting groove is located on the inner wall of the large sleeve 12. Through the setting of the limiting groove and the limiting blocks 18, the small sleeve 13 can move up and down in the first mounting groove without rotating. The lead screw 17 is rotatably connected to the small sleeve 13, so that when the lead screw 17 rotates, the rotation of the lead screw 17 is converted into the up and down movement of the small sleeve 13.

[0030] The angle adjustment assembly includes a rotary robotic arm 14 and a rotary motor 15. The output shaft of the rotary motor 15 passes through a second through hole on the side wall of the small sleeve 13 and is fixedly connected to the rotary robotic arm 14. The other end of the rotary robotic arm 14 is connected to a connecting rod 19, which is rotatably connected to the side wall of the small sleeve 13. The rotary motor 15 drives the rotary robotic arm 14 to rotate, realizing the movement of the mechanical joint, thereby enabling more precise angle adjustments while raising and lowering the height.

[0031] A retraction mechanism is provided on both sides of the water collection membrane 1. The retraction mechanism includes a cylinder and a cylinder drive motor. The cylinder is connected to the output shaft of the cylinder drive motor and to one side of the water collection membrane. The two ends of the water collection membrane 1 are wrapped around the cylinder. The cylinder is connected to the cylinder drive motor and is fixed on the bracket. When the drive motor moves, the cylinder starts to rotate and moves along the track with the bracket to realize the retraction of the water collection membrane 1. When the photovoltaic panel is working, the water collection membrane automatically retracts.

[0032] The power generation system includes photovoltaic (PV) power generation modules and wind power generation modules. The PV power generation modules include a PV water pump 9, a motor 8, a flexible PV panel, and a PV power generation automatic tracking control system 6. The motor 8 is connected to the PV water pump 9, which is connected to a water supply pipe 12. The PV water pump 9 is also connected to the PV power generation automatic tracking control system 6 via a controller 7, which is connected to a battery 10. The PV power generation automatic tracking control system 6 is electrically connected to the flexible PV panel.

[0033] The photovoltaic water pump 9 is driven by the motor 8 and linked to the photovoltaic power generation automatic tracking system via the controller 7. It utilizes photovoltaic power generation to directly power the water pump, transporting water from the low-altitude engineering tank 3 to the high-altitude irrigation area 13 or for irrigation purposes. The flexible photovoltaic panels can be laid to adapt to sloping terrain, and the photovoltaic power generation automatic tracking system adjusts the panel angle in real time via sensors to maximize light energy absorption.

[0034] The main materials of flexible photovoltaic panels include thin film materials such as polyester, polyimide, PTFE, and fluoropolymers. The composition of these materials helps reduce costs and effectively utilizes electrical energy resources in this project. Due to their soft texture, they are easy to carry and store, automatically rolling up when not in use to reduce damage to the solar panels caused by natural weather conditions. Furthermore, they maximize the utilization of solar energy and improve the efficiency of light energy utilization.

[0035] The light receiving sensor on the flexible photovoltaic panel receives the light signal. A strong light threshold and a weak light threshold are set for the sensor. When the real-time light intensity is greater than or equal to the strong light threshold, the light signal is converted into an electrical signal and transmitted to the cylindrical drive motor, the lead screw drive motor and the rotary motor on the support of the retraction mechanism, transmitting the signal to retract the support. When the real-time light intensity is less than or equal to the weak light threshold, the light signal is converted into an electrical signal and transmitted to the cylindrical drive motor, the lead screw drive motor and the rotary motor on the support of the retraction mechanism, transmitting the signal to open the support, causing the support to start moving along the track. The retraction mechanism drives the water collection membrane 1 to move simultaneously with the support.

[0036] The wind power generation module is connected to the low-altitude engineering tank 3. As an auxiliary power generation unit, the wind power generation module complements the photovoltaic power generation, improving the power supply stability of the device under no-sunlight conditions. The wind power generation module is also connected to the storage battery 10, which can store the electricity generated by the wind in the storage battery 10.

[0037] The wind turbine assembly utilizes existing structural technologies, with core components including blades, a generator, a support frame, and a base. The blades are primarily constructed of carbon fiber reinforced organic materials, balancing lightweight design with high strength. The vertical blades are 1.2m high and 0.8m in diameter, improving torque efficiency at low wind speeds. The generator is a permanent magnet synchronous generator with an added waterproof and dustproof casing to withstand humid outdoor environments. The support frame and base are equipped with a 2.5m telescopic support frame, and the base features a counterweight design (with an internal sand and gravel counterweight box) to enhance wind resistance and stability. Inside the generator base, a LoRa module uploads power generation data to an operation and maintenance platform for real-time monitoring of the turbine's status and fault warnings.

[0038] The power generation mechanism provides power to the high-precision tilt sensor and flexible pressure sensor on the water collection membrane 1, and transmits the electrical signals from the high-precision tilt sensor and flexible pressure sensor to the lead screw drive motor and rotary motor, so that the large sleeve, small sleeve and rotary robotic arm can start to operate.

[0039] By designing the APP client unit, users can control the device themselves on their mobile phones. The main control functions are as follows: (1) Users can observe the water volume in the water collection tank and the operation of the entire device on the APP (for example, monitor whether the pipe is blocked. If it is blocked on the mobile phone, there will be an early warning). (2) There is also on-site maintenance service on the mobile phone to maintain the device regularly and extend its service life.

[0040] The present invention also provides a slope water collection and irrigation method including flexible photovoltaic panel lifting, comprising the following steps: S1. Establish a mathematical model, set parameters and calculate the water collection volume, where the parameters are: precipitation P (mm / h), slope α (°), angle θ between the water collection film and the slope (°), width W (m), length L (m), and height H (m) of the support perpendicular to the slope.

[0041] The formula for calculating the length L of the water collection membrane in S1 is: ; The formula for calculating the area of ​​the water collection film is: (1); The formula for calculating the effective catchment area is: (2); The formula for calculating water collection volume is: (3); Combining equations (1) and (2), we obtain the original multi-objective function expression: .

[0042] S2. Optimize the mathematical model using an algorithm. Take the derivative of V with respect to θ and set the derivative to zero. The theoretical optimal solution is θ = -α. However, since actual installation requires θ ≥ 0, an optimization algorithm is used to find the optimal parameter combination within the feasible range. The specific operation of S2 is as follows: S21. Set the parameter range as θ∈[0, 90°-ɑ], H∈[H min H max ]; S22. Use a genetic algorithm to generate a candidate solution set, and calculate the corresponding V and A values ​​for each (H, θ) combination; S23, Maximize water volume V max and minimizing membrane area V min The significant differences in dimensions and numerical ranges mean that direct weighted summation can lead to a certain objective dominating the optimization result, which may affect the maximization of water volume V. max and minimizing membrane area V min The two quantities are normalized to obtain the mathematical model: .

[0043] The specific operation of S23 is as follows: S231. After generating the Pareto solution set using a genetic algorithm, draw a graph showing the relationship between V and A, and mark the key regions. S232. Connect the non-dominated solutions with the red curve to draw the Pareto front curve. The actual ideal point is located in the middle of the Pareto front curve. It is a boundary point that is not dominated by other solutions. That is, there is no other solution that is better than this boundary point in both objectives V and A. Select it as the final optimal solution.

[0044] S3. Select the optimal solution of the optimized mathematical model to obtain the effective water collection area and water collection volume, and build a device for water collection and irrigation.

[0045] At startup, a high-precision tilt sensor detects the slope (α), and a flexible pressure sensor scans the initial pressure distribution on the membrane surface. A preset mathematical model is input into the central control system, combining current rainfall (P), slope (α), and data from the flexible pressure sensor and high-precision tilt sensor to calculate the optimal combination of θ and H. The flexible pressure sensor and high-precision tilt sensor update the pressure distribution and surface tilt angle data in real time. If the pressure value on one side is significantly higher than on the other, it is determined to be a water accumulation leak, triggering an adjustment command. If water accumulates on the left side, the control system raises the height of the left support, causing the water on the membrane to tilt to the right and guide the water flow towards the center.

[0046] Example 1 like Figure 3 As shown, the invention was applied to Shitouzhai Village, Zhenning Buyi and Miao Autonomous County, Anshun City. The total precipitation in this area is 450 mm, the average precipitation is 2.08 mm / h, the terrain slope is 25°, and the width W of the water collection membrane is set to 6 m. A mathematical model was built according to equations (1) and (2). According to the normalization process and genetic algorithm, crossover and mutation operations were performed, and the first 50 data were retained. Using these 50 data, the corresponding A and V under each θ and H were calculated. The Pareto front plot was drawn based on the data obtained by the above algorithm. The point (21.2, 6.88) is located in the middle of the Pareto front curve and is a boundary point not dominated by other solutions (i.e., there is no other solution that is better than it in both V and A objectives). This point is the actual optimal solution. If a point with a larger V is selected (e.g., A=49.8m), the solution will be more efficient. 2 V=8.76m 3 More materials are needed, but the improvement in irrigation efficiency is limited; if a smaller point A is chosen (e.g., A=10.1m), the improvement is less significant. 2 V=3.45m 3 If the water volume is insufficient, it cannot support effective irrigation.

[0047] Therefore, this invention employs the aforementioned slope water collection and irrigation device and method that includes flexible photovoltaic panel lifting. By using flexible photovoltaic panels, the water can be automatically retracted when not in operation, avoiding damage from the sun. A high-precision tilt sensor and a flexible pressure sensor are installed on the water collection membrane to monitor the pressure of collected rainwater. By adjusting the angle and height of the water collection membrane, the water flow is directed to the center of the membrane to the maximum extent. This method is suitable for karst landforms, achieving maximum water collection. Furthermore, by establishing a mathematical model, the water collection volume and effective water collection area can be accurately calculated, reducing the error of traditional empirical estimations. A genetic algorithm is used to optimize parameter combinations, screen Pareto front solutions, and balance the contradictory objectives of water collection volume (V) and water collection area (A), ensuring maximum efficiency with limited resources.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solutions of the present invention, and these modifications or equivalent substitutions cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A slope surface catchment water harvesting irrigation device comprising a flexible photovoltaic panel lift, characterized by: The application relates to a slope surface converging water collecting and irrigating device comprising a water collecting and irrigating mechanism, a power generating mechanism, a retracting mechanism and a supporting mechanism, wherein the water collecting and irrigating mechanism is connected with the power generating mechanism and the retracting mechanism, the supporting mechanism is arranged below the water collecting and irrigating mechanism, the water collecting and irrigating mechanism comprises a water collecting film, a high-altitude water collecting assembly and a low-altitude water collecting assembly, the water collecting film is connected with the low-altitude water collecting assembly through a groove-shaped connector, the low-altitude water collecting assembly is connected with the high-altitude water collecting assembly through a water conveying pipe, the low-altitude water collecting assembly is connected with the power generating mechanism, supports are arranged at the bottom of the water collecting film, high-precision tilt sensors are arranged at the edges and the central positions of the water collecting film, and flexible pressure sensors are arranged on the lower surface of the water collecting film.

2. A slope surface catchment water harvesting and irrigation device comprising flexible photovoltaic panel lift as claimed in claim 1, wherein: The low-altitude water collecting assembly comprises a low-altitude engineering barrel and a first free irrigating mechanism, the high-altitude water collecting assembly comprises a high-altitude engineering barrel and a second free irrigating mechanism, and the high-altitude engineering barrel is connected with the second free irrigating mechanism.

3. A slope surface catchment water harvesting and irrigation device comprising flexible photovoltaic panel lift as claimed in claim 1, wherein: The power generating mechanism comprises a photovoltaic power generating assembly and a wind power generating assembly, the photovoltaic power generating assembly comprises a photovoltaic water pump, a motor, a flexible photovoltaic panel and a photovoltaic power generating automatic tracking control system, the motor is connected with the photovoltaic water pump, the photovoltaic water pump is connected with the water conveying pipe, the photovoltaic water pump is connected with the photovoltaic power generating automatic tracking control system through a controller, the photovoltaic power generating automatic tracking control system is electrically connected with the flexible photovoltaic panel, and the wind power generating assembly is connected with the low-altitude engineering barrel.

4. A slope surface catchment water harvesting and irrigation device comprising flexible photovoltaic panel lift as claimed in claim 1, wherein: The retracting mechanism comprises a cylinder and a cylinder driving motor, the cylinder is connected with the output shaft of the cylinder driving motor, and one side of the cylinder is connected with the water collecting film. The supporting mechanism comprises a support, a linear track, an obstacle and an infrared sensor, the support is slidably connected with the track, the two ends of the track are provided with the obstacles, the bottom of the support is provided with the infrared sensor, and the support is provided with the cylinder.

5. A slope surface catchment water harvesting and irrigation device incorporating flexible photovoltaic panel lift as claimed in claim 4, characterised in that: The support comprises a large sleeve, a small sleeve and an angle adjusting assembly, a first mounting groove is formed in the middle of the large sleeve, the small sleeve is arranged in the first mounting groove, a second mounting groove is formed in the small sleeve, and the angle adjusting assembly is arranged in the second mounting groove. A lead screw driving motor is arranged in the large sleeve, the rotating part of the lead screw driving motor is fixedly connected with a lead screw, the small sleeve is arranged in the large sleeve, a first through hole is formed in the middle of the small sleeve, the first through hole is provided with a thread matched with the lead screw, the lead screw passes through the first through hole, the lead screw is rotatably connected with the small sleeve, limit blocks are arranged at the two ends of the small sleeve, the limit blocks are arranged in limit grooves, and the limit grooves are arranged on the inner wall of the large sleeve. The angle adjusting assembly comprises a rotating mechanical arm and a rotating motor, the output shaft of the rotating motor passes through a second through hole formed in the side wall of the small sleeve and is fixedly connected with the rotating mechanical arm, the other end of the rotating mechanical arm is connected with a connecting rod, and the connecting rod is rotatably connected with the side wall of the small sleeve.

6. A slope surface catchment water harvesting irrigation method comprising flexible photovoltaic panel lift, characterized in that: The application is applied to the slope surface converging water collecting and irrigating device comprising the flexible photovoltaic panel, and comprises the following steps: S1, establishing a mathematical model; S2, optimizing the algorithm of the mathematical model; S3, screening the optimal solution of the optimized mathematical model, obtaining the effective water collecting area and the water collecting amount, and building the device to collect water and irrigate.

7. A slope surface catchment water harvesting and irrigation method incorporating flexible photovoltaic panel lift as claimed in claim 6, wherein: The specific operation of S1 is: setting parameters and calculating the water collecting amount. Wherein the parameters are: precipitation P, unit is mm / h, slope α, unit is °, the angle of catchment membrane and slope θ, unit is °, the catchment membrane width W, unit is m, the catchment membrane length L, unit is m, the height of support perpendicular to the slope H, unit is m.

8. A slope surface catchment water harvesting and irrigation method incorporating flexible photovoltaic panel lift as claimed in claim 7, characterized in that: The length L of the water collecting film in S1 is calculated by the following formula: ; The water collection membrane area calculation formula is: (1); The effective catchment area calculation formula is: (2); The water collection amount calculation formula is: (3); The formula (1) and formula (2) are combined to obtain the original multi-objective function expression: （4）。 9. A slope surface catchment water harvesting and irrigation method incorporating flexible photovoltaic panel lift as claimed in claim 6, wherein: In S2, the derivative of V with respect to θ is taken and the derivative is zero, and the theoretical optimal solution is θ=-α, but because the actual installation needs to satisfy θ≥0, therefore an optimization algorithm is used to solve the optimal parameter combination in the feasible range, and the specific operation of S2 is: S21, set the parameter range as θ ∈ [0, 90°-ɑ], H ∈ [H min , H max ] S22, a genetic algorithm is used to generate a candidate solution set, and the corresponding V and A values are calculated for each (H, θ) combination; S23, maximize water volume V max and minimize membrane area V min The dimension and numerical range of the two quantities are significantly different, and direct weighted summation will lead to the dominance of one target in the optimization result. To maximize water volume V max and minimize membrane area V min Two quantities are normalized to obtain a mathematical model: 。 10. A slope surface catchment water harvesting and irrigation method incorporating flexible photovoltaic panel lift as claimed in claim 6, wherein: The specific operation of S23 is: S231, after the Pareto solution set is generated by the genetic algorithm, a V-A relationship graph is drawn, and key areas are marked; S232, a non-dominated solution is connected by a red curve to draw a Pareto frontier curve, and the actual ideal point is located in the middle of the Pareto frontier curve, which is a boundary point that is not dominated by other solutions, that is, there is no other solution that is superior to the boundary point in both V and A, and the boundary point is selected as the final optimal solution.

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