A photovoltaic-driven soil moisture feedback irrigation device

Abstract

This application discloses a photovoltaic-driven soil moisture feedback irrigation device, comprising: a main body, a water storage tank, an electrical box, a photovoltaic module, and a sprinkler assembly. The photovoltaic module is installed on the top of the main body. The electrical box and the water storage tank are sequentially arranged on the main body and located below the photovoltaic module. The sprinkler assembly is disposed on the outer peripheral wall of the water storage tank and connected to the interior of the water storage tank. The electrical box contains a control component for the photovoltaic module. The bottom of the main body is conical and is equipped with a humidity sensor for detecting soil moisture. The humidity sensor is electrically connected to the control component, and the control component is electrically connected to the sprinkler assembly to control the sprinkler assembly to start spraying water. This device can adaptively adjust the spray volume according to the soil moisture conditions to achieve a reasonable irrigation effect.

Description

Technical Field

[0001] This application relates to the technical field of irrigation devices, and more particularly to a photovoltaic-driven soil moisture feedback irrigation device. Background Technology

[0002] Existing agricultural irrigation systems generally employ timed, quantitative, or experience-based sprinkler irrigation methods, lacking the ability to monitor and dynamically adjust water flow in real time based on actual soil moisture conditions. Traditional systems typically rely on preset programs or operator judgment, failing to flexibly adjust water volume according to crop water requirements, soil characteristics, and environmental changes. This often leads to over-irrigation (wasting water and causing soil degradation) or under-irrigation (affecting crop growth). Furthermore, existing systems often lack a closed-loop feedback mechanism between soil moisture data and irrigation volume, making it difficult to cope with complex scenarios such as uneven field moisture distribution and fluctuating climate conditions, resulting in low overall irrigation efficiency and significant resource consumption. Utility Model Content

[0003] The purpose of this application is to provide a photovoltaic-driven soil moisture feedback irrigation device that can adaptively adjust the spray volume according to the soil moisture conditions to achieve a reasonable irrigation effect.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] On one hand, a photovoltaic-driven soil moisture feedback irrigation device is provided, comprising: a main body, a water storage tank, an electrical box, a photovoltaic module, and a sprinkler assembly. The photovoltaic module is installed on the top of the main body. The electrical box and the water storage tank are sequentially arranged on the main body and located below the photovoltaic module. The sprinkler assembly is disposed on the outer peripheral wall of the water storage tank and connected to the interior of the water storage tank. The electrical box contains a control component for the photovoltaic module. The bottom of the main body is conical and is provided with a humidity sensor for detecting soil moisture. The humidity sensor is electrically connected to the control component, and the control component is electrically connected to the sprinkler assembly for controlling the sprinkler assembly to start spraying water.

[0006] Furthermore, the outer peripheral wall of the water storage tank is provided with an installation groove, and the spray assembly includes a plurality of nozzles spaced apart on the installation groove.

[0007] Furthermore, a rainwater collection component is provided on the top of the main body, and the rainwater collection component is connected to the water storage tank.

[0008] Furthermore, the rainwater harvesting assembly includes a water collection box, which is connected to the water storage tank via a pipe.

[0009] Furthermore, a filter plate is detachably installed at the inlet of the pipe.

[0010] Furthermore, a handle is provided on the outer wall surface of the filter plate.

[0011] Furthermore, an anchoring component is provided at the lower part of the main body.

[0012] Furthermore, the anchoring assembly includes a cross ring fitted onto the outer peripheral wall of the main body, and the bottom of the cross ring is provided with multiple anchor cones.

[0013] Furthermore, the top of the water storage tank is provided with a water inlet, which is connected to the water supply equipment via a water inlet pipe.

[0014] Furthermore, the electrical box is also equipped with a storage battery, which is electrically connected to the photovoltaic module and the control module.

[0015] The beneficial effects of this application are as follows: The photovoltaic modules at the top of the device convert solar energy into electrical energy, which powers the control components inside the electrical box. The control components collect soil moisture data in real time through a humidity sensor installed on the bottom conical body. When the humidity is lower than a preset threshold, the control components trigger the start of the sprinkler system, which precisely sprays water from the water tank through nozzles on the outer wall. If the humidity reaches or exceeds the threshold, the sprinkler function is automatically turned off, forming a closed-loop control of "sensing-decision-execution". The beneficial effects of this device are significant: On the one hand, the photovoltaic-driven mode eliminates dependence on the external power grid, reducing the energy cost of agricultural irrigation, especially suitable for remote areas or scattered farmland; on the other hand, the dynamic adjustment mechanism based on soil moisture effectively avoids the blindness of traditional irrigation, saving more than 30% of water and reducing soil nutrient loss. At the same time, the conical body design facilitates the humidity sensor to penetrate deep into the soil to obtain accurate data and improves the wind resistance stability of the device in the field, realizing a deep integration of green energy saving and precision agriculture. Attached Figure Description

[0016] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a perspective view of the photovoltaic-driven soil moisture feedback irrigation device described in the embodiments of this application;

[0018] Figure 2 This is a front view of the photovoltaic-driven soil moisture feedback irrigation device described in the embodiments of this application;

[0019] Figure 3 This is a perspective view of the pipe and filter plate described in the embodiments of this application;

[0020] Figure 4 This is a perspective view of the anchoring component described in the embodiments of this application.

[0021] In the diagram: 1. Main body; 2. Water storage tank; 201. Mounting slot; 3. Electrical box; 4. Photovoltaic module; 5. Sprinkler module; 6. Rainwater collection module; 7. Anchoring module; 701. Cross ring; 702. Anchor cone; 8. Pipe; 9. Filter plate; 10. Handle. Detailed Implementation

[0022] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0025] like Figures 1-4As shown, this embodiment provides a photovoltaic-driven soil moisture feedback irrigation device, including: a main body 1, a water storage tank 2, an electrical box 3, a photovoltaic module 4, and a spray assembly 5. The photovoltaic module 4 is installed on the top of the main body 1. The electrical box 3 and the water storage tank 2 are sequentially arranged on the main body 1 and located below the photovoltaic module 4. The spray assembly 5 is disposed on the outer peripheral wall of the water storage tank 2 and connected to the interior of the water storage tank 2. The electrical box 3 is provided with a control component for the photovoltaic module 4. The bottom of the main body 1 is conical and is provided with a humidity sensor for detecting soil moisture. The humidity sensor is electrically connected to the control component, and the control component is electrically connected to the spray assembly 5 to control the spray assembly 5 to start spraying water.

[0026] Based on the above scheme, its working principle is based on the closed-loop design of the entire chain of "solar energy-electric energy-intelligent control-precision irrigation": the photovoltaic module 4 on the top of the device converts solar energy into electrical energy to power the control component in the electrical box 3, ensuring stable operation even in remote farmland without mains power access; the control component is based on a microprocessor and has a built-in humidity threshold algorithm and irrigation decision model. It collects soil moisture data in real time through a high-precision humidity sensor embedded in the bottom conical body 1. When the monitored value is lower than the preset threshold, the control component immediately triggers the solenoid valve of the sprinkler component 5 to open, and the water in the water tank 2 is sprayed out through the atomizing nozzles evenly distributed on the outer perimeter wall to form a circular coverage area; if the humidity rises above the threshold or reaches the preset irrigation time, the system automatically closes the solenoid valve to avoid over-irrigation.

[0027] The beneficial effects of this device are reflected in multi-dimensional performance improvements: In terms of energy, the photovoltaic-driven mode frees the device from grid dependence. In areas with sufficient sunshine, the photovoltaic conversion efficiency is high. Combined with a low-power control chip, a single energy storage can meet the irrigation needs for several consecutive days, significantly reducing carbon emissions. In terms of water conservation, the dynamic adjustment mechanism based on soil moisture greatly reduces irrigation errors. At the same time, optimized nozzle design reduces evaporation loss, significantly improving water use efficiency. In terms of intelligence, the conical main body 1 design ensures that the humidity sensor penetrates deep into the crop root layer, and the streamlined structure adapts to complex field environments. Combined with a high-protection-level electrical box 3 and water storage tank 2, the stability of the device is improved. In terms of economy, the modular design supports multi-unit networking. Data transmission and remote monitoring are achieved through wireless communication technology, reducing the cost of a single unit and extending the maintenance cycle, providing a cost-effective solution for the intelligent management of large-scale farmland.

[0028] In practical applications, the device can achieve unattended precision irrigation in ecological forest planting in arid areas through photovoltaic power supply and soil moisture feedback, thereby improving the survival rate of drought-resistant tree species. In facility agriculture scenarios, it can be linked with greenhouse environmental control systems to dynamically adjust irrigation strategies to reduce the risk of pests and diseases. In addition, its data transmission function can provide real-time basis for regional agricultural water resource allocation, helping to achieve the dual goals of precision agriculture and sustainable development.

[0029] Preferably, the outer peripheral wall of the water storage tank 2 is provided with an installation groove 201, and the spray assembly 5 includes a plurality of nozzles spaced apart on the installation groove 201. The installation groove 201 serves as a fixed base for the nozzles, and through a precisely designed groove structure and a threaded interface with the nozzles, it ensures that each nozzle is distributed in a ring at equal intervals on the outer peripheral wall of the water storage tank 2 (for example, one nozzle is set every 30°), forming a 360° omnidirectional spray coverage; when the control component triggers an irrigation command, the water in the water storage tank 2 is transported to each nozzle through the pipe 8 under the action of gravity, and after atomization, it is sprayed out in the form of a fan-shaped water mist. The design offers significant advantages: Firstly, the modular layout of the mounting slot 201 allows for flexible adjustment of the number of nozzles (e.g., 4-8) based on the farmland area, avoiding coverage blind spots caused by fixed nozzles in traditional sprinkler systems. Secondly, the nozzles' built-in filters and one-way valves filter impurities in the water and prevent backflow, reducing the risk of clogging and extending the maintenance cycle to over 6 months. Thirdly, the spaced nozzles, combined with an adjustable spray angle (0-45°), can adapt to the surface irrigation needs of crops on flat land, and can also cover slopes or vertical planting racks by adjusting the elevation angle, ensuring that water accurately reaches the crop root layer. This improves uniformity by more than 40% compared to traditional single-nozzle irrigation, while reducing surface runoff loss and further conserving water resources.

[0030] In some embodiments, a rainwater collection component 6 is added to the top of the main body 1 and is connected to the water storage tank 2 through a guide pipe 8. Its working principle and beneficial effects are as follows: The rainwater collection component 6 adopts a funnel-shaped rainwater collection surface design, and the surface is covered with a hydrophobic coating to accelerate rainwater collection. The edge of the rainwater collection surface guides the rainwater to the guide pipe 8 through the guide groove. The pipe 8 has a built-in filter screen to intercept debris, and finally the filtered rainwater is transported to the water storage tank 2 for storage. The beneficial effects of this design are mainly reflected in resource recycling and cost optimization: First, the rainwater harvesting function can supplement irrigation water sources, reduce dependence on traditional water resources, and significantly reduce irrigation costs; Second, the connection structure between the diversion pipe 8 and the water storage tank 2 adopts a one-way valve design, ensuring that rainwater flows into the water tank in one direction and preventing irrigation water from flowing back and polluting the rainwater source, thus ensuring water quality; Third, the optimized inclination angle of the rainwater collection surface and the diversion channel enables efficient water collection in light rain, and combined with the expanded capacity design of the water storage tank 2, it gives the device stronger drought resistance in dry seasons; Fourth, the modular installation characteristics of the rainwater harvesting component 6 allow it to flexibly adapt to water storage tanks 2 of different sizes, and the rainwater collection surface is made of weather-resistant engineering plastics with a long service life, further reducing long-term operation and maintenance costs. This design achieves sustainable operation of the irrigation system and efficient management of water resources through the effective utilization of natural precipitation.

[0031] Specifically, the rainwater collection component 6 includes a water receiving box, which is connected to the water storage tank 2 via a pipe 8. A filter plate 9 is detachably installed at the inlet of the pipe 8, and a handle 10 is provided on the outer wall of the filter plate 9. The filter plate 9 is tightly fitted into the inlet of the pipe 8 through a slot structure. Its interior uses a multi-layer composite filter screen (such as a combination of a stainless steel coarse filter screen and a fiber fine filter screen), which can efficiently intercept impurities such as fallen leaves and dust. At the same time, the handle 10 is designed to allow operators to periodically remove the filter plate 9 for cleaning or replacement. The maintenance process can be completed within 3 minutes without tools. The detachable filter plate 9 design avoids the problem of reduced water collection efficiency caused by clogging of traditional fixed filters, ensuring long-term water collection stability; the non-slip texture and ergonomic curvature design of the handle 10 make it easy for one person to disassemble and assemble the filter plate 9, reducing labor intensity; the wide-mouth design of the water collection box, combined with the superhydrophobic coating, effectively improves the water collection volume compared with traditional rain collectors under the same rainfall conditions; the multi-layer composite filter can not only intercept large particles of impurities to prevent pipe 8 from clogging, but also adsorb tiny suspended solids through the fiber layer, ensuring that the water entering the water storage tank 2 meets irrigation standards and reducing subsequent water treatment costs.

[0032] Furthermore, an anchoring component 7 is provided at the lower part of the main body 1. The bottom of the main body 1 has pre-drilled mounting holes matching the anchoring component 7. During installation, the anchoring component 7 is driven deep into the ground (to a depth of 30-50 cm) by rotating bolts or hammering ground nails, utilizing the reaction force of the soil on the anchoring point to form stable support. The beneficial effects of this design are mainly reflected in structural stability and adaptability: Firstly, in strong winds or soft soil foundations, the anchoring component 7 can significantly enhance the device's anti-overturning ability, reduce the risk of equipment displacement due to wind or soil settlement, and ensure accurate coverage of the target area by the spraying range; secondly, the modular connection between the anchoring component 7 and the main body 1 facilitates quick disassembly and reinstallation during equipment relocation or maintenance, reducing repeated construction costs; thirdly, the standardized interface design of the pre-embedded mounting holes and the anchoring component 7 allows a single person to quickly complete the anchoring operation, improving deployment efficiency.

[0033] Furthermore, the anchoring component 7 includes a cross ring 701 fitted onto the outer periphery of the main body 1, with multiple anchor cones 702 at the bottom of the cross ring 701. The cross ring 701 is tightly connected to the outer periphery of the main body 1 via welding or snap-fit ​​structures. The anchor cones 702 (usually 4-8) are evenly distributed at the bottom in a radial arrangement. During installation, the anchor cones 702 are driven into the soil layer by hammering or static pressure, utilizing the friction and shear forces of the soil on the anchor cones 702 to form a three-dimensional anchoring system. The annular structure of the cross ring 701 can evenly distribute the anchoring force, avoiding deformation of the main body 1 caused by local stress concentration and enhancing the overall torsional resistance of the device. In addition, the radial arrangement of the anchor cones 702 expands the anchoring contact area, improving anchoring efficiency in sandy or loose soil.

[0034] Optionally, the top of the water storage tank 2 is provided with a water inlet, which is connected to the water supply equipment via a water inlet pipe. The water inlet adopts a threaded sealing cap design to prevent debris from entering the water storage tank 2. The water inlet pipe is made of high-pressure resistant and corrosion-resistant PVC or PE material and is connected to the water supply equipment (such as municipal water pipes, water pumps, or water trucks) through a quick connector to achieve automated or semi-automatic water replenishment. When the water level in the water storage tank 2 is lower than a preset threshold, the control component can trigger the water supply equipment to start, filling the water tank through the water inlet pipe until the water level sensor detects that the tank is full and automatically shuts off the water supply.

[0035] It is worth mentioning that the electrical box 3 also houses a storage battery, which is electrically connected to the photovoltaic module 4 and the control module. During the day when there is sufficient sunlight, the photovoltaic module 4 converts solar energy into direct current. After the charging circuit (including the MPPT controller) optimizes the charging efficiency, it charges the storage battery in the electrical box 3 and prioritizes powering the control module. The storage battery uses lithium batteries or gel batteries that support deep cycle charging and discharging. It can store excess electrical energy generated by the photovoltaic module 4 during the sunshine period and provide stable power to the control module, humidity sensor, and solenoid valve through the power supply circuit at night or when there is insufficient sunlight on cloudy days. It has built-in overcharge, over-discharge, and short-circuit protection modules. When the battery power is below 20%, it automatically cuts off non-critical loads (such as the sprinkler module 5) to prioritize the operation of the control module. In addition, the storage battery adopts a detachable design. The electrical box 3 has reserved heat dissipation holes and a waterproof and breathable membrane. The battery management system (BMS) monitors the power, temperature, and health status in real time and links with the control module to realize dynamic power distribution. It supports external mains power interface or backup generator as an emergency power supply mode in extreme weather conditions to ensure the system operates 24 hours a day without interruption.

[0036] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0039] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A photovoltaic-driven soil moisture feedback irrigation device, characterized in that, include: The main body (1), water tank (2), electrical box (3), photovoltaic module (4) and spray assembly (5) are arranged. The photovoltaic module (4) is installed on the top of the main body (1). The electrical box (3) and the water tank (2) are arranged on the main body (1) in sequence and located below the photovoltaic module (4). The spray assembly (5) is arranged on the outer peripheral wall of the water tank (2) and connected to the interior of the water tank (2). The electrical box (3) is provided with a control component for the photovoltaic module (4). The bottom of the main body (1) is conical and is provided with a humidity sensor for detecting soil moisture. The humidity sensor is electrically connected to the control component. The control component is electrically connected to the spray assembly (5) and is used to control the spray assembly (5) to start spraying water.

2. The photovoltaic-driven soil moisture feedback irrigation device according to claim 1, characterized in that, The outer peripheral wall of the water storage tank (2) is provided with an installation groove (201), and the spray assembly (5) includes a plurality of nozzles spaced apart on the installation groove (201).

3. The photovoltaic-driven soil moisture feedback irrigation device according to claim 1, characterized in that, The top of the main body (1) is also provided with a rainwater collection component (6), which is connected to the water storage tank (2).

4. The photovoltaic-driven soil moisture feedback irrigation device according to claim 3, characterized in that, The rainwater collection assembly (6) includes a water receiving box, which is connected to the water storage tank (2) via a pipe (8).

5. The photovoltaic-driven soil moisture feedback irrigation device according to claim 4, characterized in that, A filter plate (9) is detachably installed at the inlet of the pipe (8).

6. The photovoltaic-driven soil moisture feedback irrigation device according to claim 5, characterized in that, The outer wall of the filter plate (9) is provided with a handle (10).

7. The photovoltaic-driven soil moisture feedback irrigation device according to any one of claims 1-6, characterized in that, An anchoring assembly (7) is provided at the lower part of the main body (1).

8. The photovoltaic-driven soil moisture feedback irrigation device according to claim 7, characterized in that, The anchoring assembly (7) includes a cross ring (701) sleeved on the outer peripheral wall of the main body (1), and a plurality of anchor cones (702) are provided at the bottom of the cross ring (701).

9. The photovoltaic-driven soil moisture feedback irrigation device according to any one of claims 1-6, characterized in that, The top of the water storage tank (2) is provided with a water inlet, which is connected to the water supply equipment through a water inlet pipe.

10. The photovoltaic-driven soil moisture feedback irrigation device according to any one of claims 1-6, characterized in that, The electrical box (3) is also equipped with a storage battery, which is electrically connected to the photovoltaic module (4) and the control module.

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