Offshore water culture device utilizing wave energy, wind energy and solar energy

Abstract

The invention is applicable to the technical field of hydroponic plants, and provides an offshore hydroponic device utilizing wave energy, wind energy and solar energy, which comprises a floating hydroponic frame, a power supply energy storage unit, a nutrition supply unit and a control unit, the floating hydroponic frame comprises a floating box floating on the water surface and a hydroponic plant frame arranged above the floating box, and a plurality of hydroponic grooves used for planting hydroponic plants are vertically distributed in the hydroponic plant frame side by side. The nutrition supply unit comprises a nutrient solution storage tank, a nutrient solution pump and a purifying and conditioning unit which are arranged in the floating box, the nutrition supply unit is arranged, through cooperation of the nutrient solution storage tank, the nutrient solution pump and the purifying and conditioning unit, the nutrient solution pump pumps a nutrient solution from the nutrient solution storage tank, and the nutrient solution is conveyed to the roots of the hydroponic plants after being purified and conditioned; the concentration and supply amount of the nutrient solution can be more accurately controlled, the requirements of plant growth are met, the uniformity of plant growth can be effectively improved, and overnutrition or insufficient nutrition is prevented.

Description

Technical Field

[0001] This invention belongs to the field of hydroponic plant technology, and in particular relates to a marine hydroponic device that utilizes wave energy, wind energy and solar energy. Background Technology

[0002] With increasing global emphasis on sustainable development and environmental protection, the development of fields such as marine engineering technology, renewable energy utilization technology, and hydroponic plant technology has received widespread attention. Marine engineering technology primarily involves the development and utilization of marine resources, such as marine aquaculture and offshore energy extraction; renewable energy utilization technology mainly involves the use of clean energy sources such as solar, wind, and tidal energy to reduce dependence on traditional fossil fuels; and hydroponic plant technology mainly involves soilless cultivation techniques, simulating the environmental conditions required for plant growth to enable plant growth in a non-soil environment.

[0003] Existing technologies include several hydroponic devices that float on the sea surface and utilize wave, wind, and solar energy. These devices typically include a floating platform with a plant cultivation area. However, some problems remain in practical applications.

[0004] First, due to the complexity and variability of the marine environment, existing devices are often unable to reliably acquire and utilize various renewable energy sources, resulting in unstable power supply to the devices and affecting plant growth.

[0005] Secondly, existing devices often cannot accurately control the concentration and supply of nutrient solution, which may lead to uneven plant growth or even problems of nutrient over- or under-nutrient.

[0006] Finally, the existing devices still need to be improved in terms of intelligence. They cannot achieve real-time monitoring and adjustment of environmental factors such as light, temperature, and humidity, nor can they achieve automated management of plant growth.

[0007] Therefore, in order to solve the above problems, a marine hydroponic device utilizing wave energy, wind energy and solar energy is proposed. Summary of the Invention

[0008] This invention provides a marine hydroponic device that utilizes wave energy, wind energy, and solar energy, aiming to solve the problems of hydroponic devices being unable to accurately control nutrient supply and automate management.

[0009] The present invention is implemented as follows: a marine hydroponic device utilizing wave energy, wind energy and solar energy, comprising a floating hydroponic frame, a nutrient supply unit and a control unit.

[0010] The floating hydroponic rack includes a float box floating on the water surface and a hydroponic plant rack set above the float box. The hydroponic plant rack has multiple hydroponic troughs arranged vertically side by side for planting hydroponic plants. Solenoid valves are connected to both ends of the hydroponic troughs.

[0011] The nutrient supply unit includes a nutrient solution storage tank, a nutrient solution pump, and a purification and conditioning unit installed in the floating box. The nutrient solution pump is connected to the nutrient solution storage tank and the purification and conditioning unit. The nutrient solution pump draws nutrient solution from the nutrient solution storage tank, which is then purified and conditioned by the purification and conditioning unit before being fed into the hydroponic tank through a solenoid valve.

[0012] The control unit includes a main control module installed inside the float box, which is electrically connected to a solenoid valve, a nutrient solution pump, and a purification and conditioning unit.

[0013] Preferably, it also includes a power storage unit, which includes a charge / discharge management module and a lithium battery pack disposed in the float box. The charge / discharge management module is electrically connected to the lithium battery pack and the main control module. The top of the float box is provided with a photovoltaic panel electrically connected to the charge / discharge management module. The main control module controls and monitors the status of the lithium battery pack through the charge / discharge management module and performs intelligent management of the lithium battery pack.

[0014] Preferably, the power storage unit further includes an impeller generator disposed on the bottom surface of the float box, and the impeller generator is electrically connected to the charge and discharge management module.

[0015] Preferably, the power storage unit further includes a wind turbine generator disposed above the floating box, and the wind turbine generator is electrically connected to the charge and discharge management module.

[0016] Preferably, the purification and conditioning unit includes a mixing tank, a water pump, and a filter. The water pump purifies seawater through the filter and then inputs it into the mixing tank. The nutrient solution pump inputs nutrient solution into the mixing tank and mixes it with the purified water in a certain proportion to form a diluted solution that meets the growth requirements of hydroponic plants.

[0017] Preferably, the purification and conditioning unit further includes a delivery pump, which inputs the diluted solution formed by conditioning through a solenoid valve at one end of the hydroponic tank, and the solenoid valve at the other end of the hydroponic tank is connected to the mixing tank through a pipeline to form a return path.

[0018] Preferably, the control unit further includes a data acquisition unit electrically connected to the main control module. The data acquisition unit includes a TDS sensor, an EC sensor, and a pH sensor. The main control module collects the total amount of soluble solids, the content of inorganic salts, and the acidity or alkalinity of the solution in real time through the TDS sensor, EC sensor, and pH sensor.

[0019] Preferably, the data acquisition unit further includes a temperature sensor and a humidity sensor. The main control module collects the ambient temperature and the temperature of the diluent in the mixing tank and hydroponic tank in real time through the temperature sensor, and collects the ambient humidity in real time through the humidity sensor.

[0020] Preferably, the data acquisition unit further includes a light sensor, which is used to collect the real-time light intensity in the environment and output it to the main control module.

[0021] Preferably, it also includes a plant supplemental lighting unit, which includes a plant supplemental lighting lamp corresponding to the hydroponic tank. The plant supplemental lighting lamp is electrically connected to the main control module, and the main control module controls the plant supplemental lighting lamp to supplement the hydroponic plants according to the light intensity.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. Precise nutrient supply: This invention is equipped with a nutrient supply unit, which works in conjunction with a nutrient solution storage tank, a nutrient solution pump, and a purification and conditioning unit. The nutrient solution pump draws nutrient solution from the nutrient solution storage tank, purifies and conditions it, and then delivers it to the roots of the hydroponic plants. This allows for more precise control of the concentration and supply of the nutrient solution, meeting the needs of plant growth and effectively improving the uniformity of plant growth. It also prevents nutrient over- or under-nutrients, avoiding the problems of uneven plant growth and nutrient over- or under-nutrients.

[0024] 2. Utilization of Multiple Energy Sources: This invention integrates solar, wind, and wave energy, and utilizes a charging and discharging management module, lithium battery pack, photovoltaic panels, wind turbine, and impeller generator to fully leverage solar, wind, and wave energy, providing a stable power supply. This effectively solves the problem of unstable power supply caused by the complexity and variability of the marine environment, which is more conducive to the growth of hydroponic plants and intelligent automated management. Furthermore, the use of renewable energy can reduce dependence on traditional fossil fuels and lower planting costs, demonstrating high practical value and broad application prospects.

[0025] 3. Intelligent Control: This invention, through the setting of a control unit, with the main control module and data acquisition unit working together, and through the cooperation of light sensors, TDS sensors, EC sensors, pH sensors, temperature sensors and humidity sensors, monitors environmental factors of hydroponic plants in real time, including light intensity, ambient temperature, ambient humidity, and the TDS, EC and pH values ​​of the diluent. This achieves automated management of plant growth. Through comprehensive data collection, it is easier to determine whether the diluent meets the growth requirements of hydroponic plants and provides accurate data support for the nutrient supply unit, thereby improving planting efficiency and the cultivation quality of hydroponic plants. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the unfolded structure of the present invention;

[0028] Figure 3 This is a schematic diagram illustrating the application of the present invention in hydroponic plant cultivation;

[0029] Figure 4 This is a schematic diagram of the system composition of the present invention;

[0030] Figure 5 This is a schematic diagram of the composition of the purification and conditioning unit of the present invention.

[0031] In the diagram: 1. Floating hydroponic rack; 11. Floating box; 12. Deck; 13. Hydroponic plant rack; 14. Hydroponic tank; 15. Solenoid valve; 16. First level gauge;

[0032] 2. Power storage unit; 21. Charge and discharge management module; 22. Lithium battery pack; 23. Photovoltaic panel; 24. Wind turbine generator; 25. Rotary turbine generator;

[0033] 3. Nutrient supply unit; 31. Nutrient solution storage tank; 32. Nutrient solution pump; 33. Purification and conditioning unit; 331. Mixing tank; 332. Priming pump; 333. Filter; 334. Transfer pump; 335. Second level gauge;

[0034] 4. Control unit; 41. Main control module; 42. Data acquisition unit; 421. Light sensor; 422. TDS sensor; 423. EC sensor; 424. pH sensor; 425. Temperature sensor; 426. Humidity sensor;

[0035] 5. Plant supplemental lighting unit; 51. Lighting control module; 52. Plant supplemental light. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0037] Example 1

[0038] Please see Figure 1-4 The present invention provides a technical solution: a marine hydroponic device utilizing wave energy, wind energy and solar energy, comprising a floating hydroponic frame 1, a nutrient supply unit 3 and a control unit 4;

[0039] The floating hydroponic rack 1 includes a float 11 floating on the water surface and a hydroponic plant rack 13 positioned above the float 11. Specifically, the lower end of the float 11 has a cavity to provide buoyancy, the top surface of the float 11 has a sinking cavity, and a deck 12 is detachably connected to the top of the float 11. The deck 12 is used to seal the sinking cavity at the top of the float 11. The hydroponic plant rack 13 is positioned on the top surface of the deck 12 and can be adjusted according to the growth needs of the plants. The hydroponic plant rack 13 is vertically oriented. Multiple hydroponic troughs 14 for planting hydroponic plants are arranged in parallel. Specifically, the two ends of the hydroponic troughs 14 are detachably connected to the hydroponic plant rack 13. The hydroponic troughs 14 serve as the base for the growth of hydroponic plants. They have cavities inside that can hold nutrient solution. Several horizontally arranged planting holes are opened on the top edge of the hydroponic troughs 14 for planting seedlings of hydroponic plants. Solenoid valves 15 are connected to both ends of the hydroponic troughs 14. Specifically, the solenoid valves 15 and their connected water pipes are inserted into the hydroponic plant rack 13.

[0040] The nutrient supply unit 3 includes a nutrient solution storage tank 31, a nutrient solution pump 32, and a purification and conditioning unit 33 installed in the float box 11. The nutrient solution pump 32 connects the nutrient solution storage tank 31 and the purification and conditioning unit 33. Specifically, the nutrient solution storage tank 31 stores nutrient solution that meets the growth needs of hydroponic crops. The nutrient solution pump 32 draws nutrient solution from the nutrient solution storage tank 31, which is then purified and conditioned by the purification and conditioning unit 33 and input into the hydroponic tank 14 through the solenoid valve 15 to ensure the uniformity of plant growth and prevent nutrient over- or under-nutrient.

[0041] The control unit 4 includes a main control module 41 installed in the float box 11. The main control module 41 is electrically connected to the solenoid valve 15, the nutrient solution pump 32 and the purification and conditioning unit 33.

[0042] The floating support 11 can be used to float the hydroponic plant rack 13. The floating support 11 and the hydroponic plant rack 13 can be assembled into a floating platform frame, so that the whole device can float stably on the sea surface and is not affected by the waves. The hydroponic plants are planted in the hydroponic tank 14 for freshwater hydroponics at sea, which is conducive to the development and utilization of marine resources. The nutrient supply unit 3 serves as the nutrient supply side for hydroponics. With the cooperation of the nutrient solution storage tank 31, nutrient solution pump 32 and purification and conditioning unit 33, the nutrient solution pump 32 draws nutrient solution from the nutrient solution storage tank 31, purifies and conditions it and delivers it to the roots of the hydroponic plants. This allows for more precise control of the concentration and supply of nutrient solution, meets the needs of plant growth, effectively improves the uniformity of plant growth and prevents nutrient over- or under-nutrient.

[0043] Example 2

[0044] Please see Figure 1-5 The difference from Example 1 is as follows:

[0045] Furthermore, it also includes a power storage unit 2, which includes a charge / discharge management module 21 and a lithium battery pack 22 disposed within the float 11. The charge / discharge management module 21 is electrically connected to the lithium battery pack 22 and the main control module 41. Specifically, the charge / discharge management module 21 is used for intelligent management of the charging and discharging of the lithium battery pack 22 to ensure efficient operation and lifespan of the lithium battery pack 22. A photovoltaic panel 23 electrically connected to the charge / discharge management module 21 is provided at the top of the float 11. Specifically, the photovoltaic panel 23 is mounted on the outer side of the top of the float 11 by bolts and brackets, or the photovoltaic panel 23 floats on the water surface, and the bottom surface of the photovoltaic panel 23 is connected to... An appendage, such as a lightweight material float or a supporting buoy, is provided to support the buoyancy of the battery pack 11. The photovoltaic panel 23 is used for photovoltaic power generation and stores electrical energy in the lithium battery pack 22 through the charge and discharge management module 21. The main control module 41 controls and monitors the status of the lithium battery pack 22 through the charge and discharge management module 21 and performs intelligent management of the lithium battery pack 22. Specifically, the charge and discharge management module 21 obtains parameters such as current, voltage, temperature and capacity of the lithium battery pack 22 and controls the current and voltage of the lithium battery pack 22 during the charge and discharge process. This intelligent control and management of the lithium battery pack 22 improves its service life and performance.

[0046] Furthermore, the power storage unit 2 also includes an impeller generator 25 installed on the bottom surface of the float box 11. The impeller generator 25 is electrically connected to the charge and discharge management module 21. The impeller generator 25 converts the wave energy of seawater into electrical energy for hydroelectric power generation, and stores the energy in the lithium battery pack 22 through the charge and discharge management module 21.

[0047] Furthermore, the power storage unit 2 also includes a wind turbine 24 disposed above the float box 11. The wind turbine 24 is electrically connected to the charge and discharge management module 21. The wind turbine 24 generates wind power and stores energy in the lithium battery pack 22 through the charge and discharge management module 21.

[0048] By cooperating with the charging and discharging management module 21, lithium battery pack 22, photovoltaic panel 23, wind turbine generator 24 and impeller generator 25, the system makes full use of solar energy, wind energy and wave energy to provide a stable power supply, effectively solving the problem of unstable power supply caused by the complexity and variability of the marine environment, and is more conducive to the growth of hydroponic plants and intelligent automated management.

[0049] Furthermore, the purification and conditioning unit 33 includes a mixing tank 331, a water pump 332, and a filter 333. Specifically, the mixing tank 331, the water pump 332, and the filter 333 are all installed inside the float box 11. The filter 333 includes a coarse filter head, a UF membrane filter element, and an RO membrane filter element connected sequentially by pipelines. The filtration end of the coarse filter head passes through the float box 11 and contacts the water area below the float box 11. The filtration end of the coarse filter head is connected to the inlet of the UF membrane filter element through a pipeline. The outlet of the UF membrane filter element is connected to the inlet of the RO membrane filter element through a pipeline. The outlet of the RO membrane filter element is connected to the inlet of the water pump 332 through a pipeline. The UF membrane filter element and the RO membrane filter element... All sewage outlets are connected to the sewage pipeline via one-way valves. The water pump 332 purifies seawater through the filter 333 and then inputs it into the mixing tank 331. The nutrient solution pump 32 inputs nutrient solution into the mixing tank 331 and mixes it with the purified water in a certain proportion to form a diluted solution that meets the growth needs of hydroponic plants. Specifically, both the nutrient solution pump 32 and the water pump 332 are metering pumps. The outlets of both the nutrient solution pump 32 and the water pump 332 are connected to the inlet of the mixing tank 331 through pipelines. The nutrient solution and purified water are mixed in the mixing tank 331 in a preset proportion according to the type and growth stage of the hydroponic plants to meet the growth needs of different types and growth stages of hydroponic plants.

[0050] Furthermore, the purification and conditioning unit 33 also includes a delivery pump 334. The delivery pump 334 inputs the diluted solution formed by conditioning through a solenoid valve 15 at one end of the hydroponic tank 14. Specifically, the inlet end of the delivery pump 334 is connected to the outlet of the mixing tank 331 through a pipeline, and the outlet end of the delivery pump 334 is introduced into the hydroponic plant rack 13 through a pipeline and connected to the solenoid valve 15 at one end of the hydroponic tank 14. The solenoid valve 15 at the other end of the hydroponic tank 14 is connected to the mixing tank 331 through a pipeline to form a return path. Thus, the delivery pump 334, in conjunction with the solenoid valve 15, can quantitatively and specifically deliver the mixed and conditioned diluted solution. Moreover, the solenoid valve 15 at the other end of the hydroponic tank 14 forms a return path with the mixing tank 331, which is more conducive to the recovery of the diluted solution and sufficient conditioning.

[0051] The hydroponic tank 14 is equipped with a first level gauge 16 electrically connected to the main control module 41. The first level gauge 16 is used to monitor the liquid level in the hydroponic tank 14. Specifically, the first level gauge 16 is a photoelectric level sensor. The main control module 41 monitors the liquid level in the hydroponic tank 14 through the first level gauge 16. When the liquid level in any hydroponic tank 14 reaches the highest level, the main control module 41 closes the solenoid valve 15 at its water inlet. When the liquid level in any hydroponic tank 14 reaches the lowest level, the first level gauge 16 is activated. The system 16 sends a low liquid level signal to the main control module 41. The main control module 41 opens the solenoid valve 15 at the water inlet of the hydroponic tank 14 and replenishes the hydroponic tank 14 with nutrient solution through the delivery pump 334. The main control module 41 automatically analyzes the nutrient solution replenishment cycle of the hydroponic tank 14 based on historical low liquid level signal records. When a batch of low liquid level signals appear in the hydroponic tank 14, the system replenishes the hydroponic tank 14 with nutrient solution according to the distribution location and remaining amount of the hydroponic tank 14, from less to more, from high to low, and from far to near.

[0052] The purification and conditioning unit 33 also includes a second level gauge 335 electrically connected to the main control module 41. The second level gauge 335 is used to monitor the liquid level in the mixing tank 331 in real time. Specifically, the second level gauge 335 is a photoelectric level sensor. The main control module 41 monitors the liquid level in the mixing tank 331 through the second level gauge 335. When the liquid level in any hydroponic tank 14 reaches the minimum liquid level, the first level gauge 16 sends a low liquid level signal to the main control module 41. The main control module 41 obtains the liquid level in the mixing tank 331. According to the liquid level data, when the liquid level meets the replenishment requirements, the diluent in the mixing tank 331 is replenished to the hydroponic tank 14 through the transfer pump 334. When the liquid level does not meet the replenishment requirements, purified water and nutrient solution are pumped into the mixing tank 331 through the water pump 332 and the nutrient solution pump 32. The mixture is first mixed and diluted according to the current growth stage of the hydroponic plants, and then the diluent is replenished to the hydroponic tank 14 that has reached the minimum liquid level through the transfer pump 334.

[0053] Example 3

[0054] Please see Figure 1-4 The difference from Example 2 is as follows:

[0055] Furthermore, the control unit 4 also includes a data acquisition unit 42 electrically connected to the main control module 41. The data acquisition unit 42 includes a TDS sensor 422, an EC sensor 423, and a pH sensor 424. The main control module 41 collects the total amount of soluble solids, the content of inorganic salts, and the acidity or alkalinity of the solution in real time through the TDS sensor 422, EC sensor 423, and pH sensor 424. Specifically, the TDS sensor 422, EC sensor 423, and pH sensor 424 can all be detachably connected to the mixing tank 331 and monitor the total amount of soluble solids, the content of inorganic salts, and the acidity or alkalinity of the solution in the mixing tank 331. By monitoring the TDS, EC, and pH values ​​of the diluent through the TDS sensor 422, EC sensor 423, and pH sensor 424, it is more helpful to determine whether the diluent meets the growth requirements of hydroponic plants and to provide accurate data support for the nutrient supply unit 3.

[0056] Furthermore, the data acquisition unit 42 also includes a temperature sensor 425 and a humidity sensor 426. The main control module 41 collects the ambient temperature and the temperature of the diluent in the mixing tank 331 and the hydroponic tank 14 in real time through the temperature sensor 425. Specifically, the temperature sensor 425 for collecting the ambient temperature is set on the top surface of the deck 12 or on the hydroponic plant rack 13. The temperature sensor 425 for collecting the temperature of the diluent is detachably connected to the mixing tank 331 and collects the temperature of the diluent inside the mixing tank 331. The main control module 41 collects the ambient humidity in real time through the humidity sensor 426. Specifically, the humidity sensor 426 is set on the hydroponic plant rack 13 and collects the humidity of the environment in which the hydroponic plants are located. Thus, by collecting the ambient temperature, ambient humidity, and the temperature of the diluent in the mixing tank 331 and the hydroponic tank 14 through the temperature sensor 425 and the humidity sensor 426, it is more conducive to monitoring the environmental factors of hydroponic plants and facilitating the automated management of plant growth.

[0057] Furthermore, the data acquisition unit 42 also includes a light sensor 421. Specifically, the light sensor 421 is installed on the top surface of the deck 12 or the top of the hydroponic plant rack 13. The light sensor 421 is used to collect the real-time light intensity in the environment and output it to the main control module 41. The light sensor 421 can collect the light intensity in the hydroponic plant environment, and understand the growth pattern of hydroponic plants and whether the light intensity meets the growth requirements of hydroponic plants.

[0058] Example 4

[0059] Please see Figure 1-4 The difference from Example 3 is as follows:

[0060] Furthermore, it also includes a plant supplementary lighting unit 5, which includes a plant supplementary light 52 corresponding to the hydroponic tank 14. Specifically, the plant supplementary light 52 is set above the hydroponic tank 14, and both ends of the plant supplementary light 52 are detachably connected to the hydroponic plant rack 13. The plant supplementary light 52 is electrically connected to the main control module 41. The main control module 41 controls the plant supplementary light 52 to supplement the hydroponic plants according to the light intensity. That is, by setting the plant supplementary light 52 above the hydroponic tank 14, the light intensity of the plant supplementary light 52 is automatically adjusted according to the growth needs of the hydroponic plants, thereby supplementing the hydroponic plants with light and ensuring that the photosynthesis of the hydroponic plants proceeds normally.

[0061] The plant supplementary lighting unit 5 also includes a lighting control module 51. Specifically, the lighting control module 51 is installed on each row of hydroponic plant racks 13. The lighting control module 51 is electrically connected to the main control module 41 and the plant supplementary lights 52. Specifically, the main control module 41 controls the on / off state and brightness of the plant supplementary lights 52 in the corresponding area through the lighting control module 51. Thus, the plant supplementary lights 52 on each hydroponic plant rack 13 can be individually controlled through the lighting control module 51, making intelligent management easier.

[0062] Based on the above-mentioned marine hydroponic device utilizing wave energy, wind energy, and solar energy, the present invention also provides a technical solution: a marine hydroponic method utilizing wave energy, wind energy, and solar energy, applied to the above-mentioned marine hydroponic device utilizing wave energy, wind energy, and solar energy, comprising the following steps:

[0063] S1, Obtain growth data and cultivation data of hydroponic plants, and determine the hydroponic plants to be planted and their required nutrient solution based on the growth data;

[0064] The growth data includes the type of hydroponic plant, its growth cycle, and the nutritional requirements at any growth stage within the growth cycle.

[0065] S2, Obtain cultivation data of hydroponic plants, and calibrate the initial parameters of the dilution solution corresponding to the nutrient solution required for each growth stage of hydroponic plants based on the cultivation data. Specifically, the initial parameters of the dilution solution include the initial ratio of the mixture of purified water and nutrient solution, as well as the initial values ​​of the total amount of soluble solids, the content of inorganic salts, and the pH of the solution.

[0066] The cultivation data includes the cultivation time, cultivation spacing, number of plants in a single hydroponic trough, and total number of plants in the hydroponic plant rack.

[0067] S3. After planting hydroponic plants, the growth stage of the hydroponic plants is obtained based on growth data and cultivation data. The initial dilution parameters are matched according to the growth stage. The dilution with the corresponding initial parameters is input into the roots of the hydroponic plants according to the growth stage of the hydroponic plants at the time of planting. This dilution is used as the initial dilution at the time of planting. Specifically, after the initial dilution is determined, the main control module 41 drives the water pump 332 and the nutrient solution pump 32 to pump clean water and nutrient solution into the mixing tank 331 in proportion for dilution. After mixing and conditioning, the solenoid valve 15 is opened, and the conditioning initial dilution is input into the hydroponic tank 14 through the delivery pump 334.

[0068] S4. Acquire light intensity data, calculate the moving average light intensity over the past fifteen days based on historical light intensity data, combine the growth and cultivation data of hydroponic plants, obtain the light compensation coefficient for the current growth stage of hydroponic plants based on the moving average light intensity, obtain the light intensity that meets the growth needs of plants based on the moving average light intensity, real-time light intensity and light compensation coefficient, set the output value of the lighting control module 51 by the main control module 41, and automatically adjust the supplemental light for hydroponic plants through the plant supplemental light 52;

[0069] S5. Acquire ambient temperature data and diluent temperature data. Calculate the average difference between the ambient temperature and diluent temperature over five consecutive days based on historical ambient temperature and diluent temperature data. Calculate the temperature compensation coefficient of the diluent based on the average difference. Specifically, based on the ambient temperature data collected by temperature sensor 425 and the diluent temperature data in hydroponic tank 14 and mixing tank 331, the main control module 41 calculates the average difference between the ambient temperature and the diluent temperature in hydroponic tank 14 and mixing tank 331 over five consecutive days, and uses the ratio of the two as the temperature compensation coefficient of the diluent.

[0070] S6. Obtain ambient humidity data and liquid level data in hydroponic tank 14 and mixing tank 331. Calculate the average ambient humidity and average liquid level drop rate over five consecutive days based on historical ambient humidity and liquid level data. Obtain the evaporation compensation coefficient of the diluent. Obtain the replenishment cycle of the diluent based on the evaporation compensation coefficient and the liquid level drop rate.

[0071] S7. Obtain the diluent parameters in the mixing tank 331 (mixing ratio of purified water and nutrient solution, total amount of soluble solids, content of inorganic salts, pH). Adjust the diluent to be added to the hydroponic tank 14 in the mixing tank 331 according to the temperature compensation coefficient and the evaporation compensation coefficient. Specifically, the diluent parameters in the mixing tank 331 are compensated by the temperature compensation coefficient, and the amount of diluent to be added is compensated by the evaporation compensation coefficient. Obtain the diluent parameters and amount to be added to the hydroponic tank 14. Adjust the input ratio of purified water and nutrient solution according to the diluent and the amount to be added. Add the adjusted diluent to the hydroponic tank 14 according to the replenishment cycle to replenish the hydroponic plants in the hydroponic tank 14.

[0072] In summary, this invention enables the construction and intelligent operation of marine hydroponic devices utilizing wave energy, wind energy, and solar energy, making it possible to cultivate crops in freshwater at sea. Furthermore, by employing renewable energy sources such as solar, wind, and wave energy, this invention reduces dependence on traditional fossil fuels, aligning with environmental protection principles and lowering cultivation costs. Compared to existing technologies, it not only achieves stable utilization of diverse energy sources but also offers advantages such as precise nutrient supply, intelligent environmental control, and energy conservation, demonstrating high practical value and broad application prospects.

[0073] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An offshore hydroponic device utilizing wave energy, wind energy and solar energy, characterized in that: It comprises a floating hydroponic rack (1), a nutrient supply unit (3) and a control unit (4); The floating hydroponic rack (1) comprises a buoyancy box (11) floating on the water surface and a hydroponic plant rack (13) arranged above the buoyancy box (11); a plurality of hydroponic tanks (14) for planting hydroponic plants are vertically arranged in parallel in the hydroponic plant rack (13); and electromagnetic valves (15) are connected to both ends of the hydroponic tanks (14); The nutrient supply unit (3) comprises a nutrient solution storage tank (31), a nutrient solution pump (32) and a purification and conditioning unit (33) arranged in the floating tank (11); the nutrient solution pump (32) is connected to the nutrient solution storage tank (31) and the purification and conditioning unit (33); the nutrient solution pump (32) extracts nutrient solution from the nutrient solution storage tank (31), purifies and conditions the nutrient solution in the purification and conditioning unit (33), and then inputs the nutrient solution into the hydroponic tank (14) through the solenoid valve (15); The control unit (4) comprises a general control module (41) arranged in the floating tank (11), and the general control module (41) is electrically connected to the solenoid valve (15), the nutrient solution pump (32) and the purification and conditioning unit (33).

2. An offshore hydroponic device utilizing wave energy, wind energy and solar energy as claimed in claim 1, further comprising a power storage unit (2), wherein the power storage unit (2) comprises a charge and discharge management module (21) and a lithium battery pack (22) arranged in a buoyancy box (11), wherein the charge and discharge management module (21) is electrically connected to the lithium battery pack (22) and a general control module (41), and a photovoltaic panel (23) electrically connected to the charge and discharge management module (21) is provided at the top of the buoyancy box (11), and the general control module (41) controls and monitors the status of the lithium battery pack (22) through the charge and discharge management module (21), and performs intelligent management on the lithium battery pack (22).

3. The offshore hydroponic device utilizing wave energy, wind energy and solar energy as claimed in claim 2, characterized in that: The power storage unit (2) further comprises an impeller generator (25) arranged on the bottom surface of the buoyancy tank (11), and the impeller generator (25) is electrically connected to the charge and discharge management module (21).

4. The offshore hydroponic device utilizing wave energy, wind energy and solar energy as claimed in claim 2, characterized in that: The power storage unit (2) also includes a wind generator (24) arranged above the buoyancy box (11), and the wind generator (24) is electrically connected to the charge and discharge management module (21).

5. The offshore hydroponic device utilizing wave energy, wind energy and solar energy as claimed in claim 1, characterized in that: The purification and conditioning unit (33) comprises a mixing tank (331), a water inlet pump (332) and a filter (333); the water inlet pump (332) purifies the seawater through the filter (333) and then inputs the seawater into the mixing tank (331); the nutrient solution pump (32) inputs the nutrient solution into the mixing tank (331) and mixes the nutrient solution with the clean water in a certain proportion for conditioning, thereby forming a dilution solution that meets the growth requirements of hydroponic plants.

6. The offshore hydroponic device utilizing wave energy, wind energy and solar energy as claimed in claim 5, characterized in that: The purification and conditioning unit (33) further comprises a delivery pump (334), wherein the delivery pump (334) inputs the diluted liquid formed by conditioning through the solenoid valve (15) at one end of the hydroponic tank (14), and the solenoid valve (15) at the other end of the hydroponic tank (14) is connected to the mixing tank (331) through a pipeline to form a reflux path.

7. The offshore hydroponic device utilizing wave energy, wind energy and solar energy as claimed in claim 1, characterized in that: The control unit (4) further comprises a data acquisition unit (42) electrically connected to the main control module (41), wherein the data acquisition unit (42) comprises a TDS value sensor (422), an EC value sensor (423), and a pH value sensor (424), and the main control module (41) collects the total amount of soluble solids in the diluent, the content of inorganic salts, and the pH value of the solution in real time through the TDS value sensor (422), the EC value sensor (423), and the pH value sensor (424).

8. The offshore hydroponic device utilizing wave energy, wind energy and solar energy as claimed in claim 7, characterized in that: The data acquisition unit (42) further comprises a temperature sensor (425) and a humidity sensor (426); the general control module (41) collects the ambient temperature and the temperature of the diluent in the mixing tank (331) and the hydroponic tank (14) in real time through the temperature sensor (425); and the general control module (41) collects the ambient humidity in real time through the humidity sensor (426).

9. The offshore hydroponic device utilizing wave energy, wind energy and solar energy as claimed in claim 7, characterized in that: The data collection unit (42) further comprises a light sensor (421), wherein the light sensor (421) is used to collect real-time light intensity in the environment and output it to the main control module (41).

10. The offshore hydroponic device utilizing wave energy, wind energy and solar energy as claimed in claim 9, characterized in that: The invention also comprises a plant light-filling unit (5), wherein the plant light-filling unit (5) comprises a plant light-filling lamp (52) arranged corresponding to the hydroponic tank (14), wherein the plant light-filling lamp (52) is electrically connected to the main control module (41), and the main control module (41) controls the plant light-filling lamp (52) to provide light-filling to the hydroponic plants according to the light intensity.

Images