Photovoltaic tea garden, water replenishing method thereof and electronic device

Abstract

The invention relates to the field of photovoltaic tea gardens, and provides a photovoltaic tea garden, a water supplementing method thereof and an electronic device.The current soil humidity of a target tea garden area under a photovoltaic panel assembly is obtained, and when the current soil humidity is smaller than ideal soil humidity, the difference value between the ideal soil humidity and the current soil humidity is determined; when the difference value is larger than a first preset threshold value, the first nozzle is controlled to enter a water spraying mode so as to supplement water to the target tea garden area, and when the difference value is smaller than or equal to the first preset threshold value, it is judged that the soil humidity of the target tea garden area is within a normal range, and the first nozzle is controlled to be in a closed state. According to the system, water can be supplemented to the tea garden in time, waste of water resources can be avoided, traditional manual irrigation is not needed, the irrigation efficiency is greatly improved, the labor cost is reduced, and the growth condition and quality of tea trees are effectively guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic tea gardens, and in particular to a photovoltaic tea garden and a water replenishment method and an electronic device thereof. Background Art

[0002] Photovoltaic tea gardens achieve the dual functions of solar power generation and tea planting by installing photovoltaic panels above the tea garden. This model not only makes full use of land resources and improves the comprehensive benefits of land, but also reduces the amount of sunlight received by tea trees, reduces the biosynthesis of bitter polyphenols in tea trees, promotes the synthesis and accumulation of fresh amino acids and other compounds, improves the quality of tea, and provides clean energy for tea gardens through solar power generation, promoting the sustainable development of agriculture.

[0003] However, since the photovoltaic facilities are installed above the tea trees, they will hinder the tea trees below from receiving natural rainwater or dew. These natural moistures are an important supplementary water source for the growth of tea trees. For crops such as tea trees that have a high demand for water, if there is a long-term lack of natural rainwater or dew, it will have an adverse effect on the growth and quality of the tea trees.

[0004] To solve this problem, existing technologies often rely on manual irrigation / watering, which is inefficient, especially for mountain tea gardens, where tea trees are often distributed on slopes with large terrain fluctuations, making manual watering very time-consuming and labor-intensive, with high labor costs. In addition, it is difficult to achieve precise irrigation using manual methods. For example, due to the lack of effective monitoring methods, it is impossible to monitor soil moisture and the actual water demand of tea trees in real time, which easily leads to excessive or insufficient irrigation, or over-irrigation in some places and insufficient irrigation in others.

[0005] In view of this, it is necessary to propose a photovoltaic tea garden and a water replenishment method and an electronic device thereof to solve or at least alleviate the above-mentioned defects. Summary of the invention

[0006] The main purpose of the present invention is to provide a photovoltaic tea garden and a water replenishment method and an electronic device thereof, so as to solve the technical problems in the prior art that manual irrigation / watering is relied upon, which is time-consuming and labor-intensive, and it is difficult to achieve precise irrigation.

[0007] To achieve the above object, the present invention provides a water replenishment method for a photovoltaic tea garden, comprising the following steps:

[0008] S1, obtaining the current soil moisture of the target tea garden area under the photovoltaic panel assembly, and determining whether the current soil moisture is less than the ideal soil moisture;

[0009] S2, when the current soil moisture is less than the ideal soil moisture, determining the difference between the ideal soil moisture and the current soil moisture, and judging whether the difference is greater than a first preset threshold;

[0010] S31, when the difference is greater than a first preset threshold, it is determined that the target tea garden area is in a drought state, and the first nozzle is controlled to enter a water spraying mode to replenish water to the target tea garden area; wherein the first nozzle is rotatably mounted at the bottom of the photovoltaic panel assembly, the spraying area of ​​the first nozzle matches the target tea garden area, and the first nozzle has a water spraying mode and a spraying mode;

[0011] S32, when the difference is less than or equal to a first preset threshold, it is determined that the soil moisture in the target tea garden area is within a normal range, and the first nozzle is controlled to be in a closed state.

[0012] Preferably, in step S31, controlling the first nozzle to enter the water spraying mode to replenish water to the target tea garden area specifically comprises the following steps:

[0013] S311, using the formula ETC = K C *ET0 determines the current water demand ETC of the tea trees in the target tea garden area; where K C is the water requirement coefficient of tea tree, ET0 is the evapotranspiration of reference crop;

[0014] S312, using the formula Q = ETC * S * (H a -H t ) Determine the required watering volume Q for the target tea garden area; where S is the area of ​​the target tea garden area, H a is the ideal soil moisture, H t is the current soil moisture;

[0015] S313, allocating the water spraying duration T and the water spraying intensity I of the first nozzle according to the water spraying amount Q; wherein Q=T*I;

[0016] S314, controlling the first nozzle to enter a water spraying mode according to the water spraying duration and water spraying intensity to replenish water to the target tea garden area.

[0017] Preferably, obtaining the current soil moisture of the target tea garden area under the photovoltaic panel assembly in step S1 specifically comprises the following steps:

[0018] S11, obtaining soil moisture H detected by a plurality of soil moisture meters arranged in the target tea garden area i ; Among them, H i is the soil moisture value measured by the i-th soil moisture meter;

[0019] S12, using the formula Calculate the average soil moisture value of all soil moisture meters The average soil moisture value as the current soil moisture of the target tea garden area; wherein N is the total number of soil moisture meters set in the target tea garden area, and a plurality of soil moisture meters are distributed at intervals in the target tea garden area.

[0020] Preferably, the step S11 further includes the following steps:

[0021] Calculating the standard deviation of soil moisture values ​​of all soil moisture meters in the target tea garden area, and determining whether the standard deviation is greater than a second preset threshold;

[0022] When the standard deviation is greater than a second preset threshold, it is determined that the soil moisture distribution fluctuation in the target tea garden area is large, and the minimum value of the soil moisture values ​​of all soil moisture meters is taken as the current soil moisture, and the step of determining whether the current soil moisture is less than the ideal soil moisture is entered;

[0023] When the standard deviation is less than or equal to the second preset threshold, it is determined that the soil moisture distribution fluctuation in the target tea garden area is small, and the process proceeds to step S12.

[0024] Preferably, the step S314 further includes the step of: returning to step S1 at the first time point when the water spraying time after the first nozzle is turned on ends.

[0025] Preferably, the step S32 further includes the following steps:

[0026] S41, obtaining the current time, and determining whether the current time is in the first preset time period in the morning, and determining whether the current time is in the first preset time period in the evening;

[0027] S42, when any one of the current moment is in the first preset time period in the morning and the current moment is in the first preset time period in the evening is established, the first nozzle is controlled to enter the spray mode, wherein each spraying time is 10 minutes to 30 minutes, and the water consumption is 1L-3L / square meter each time.

[0028] Preferably, the step S32 further includes the following steps:

[0029] Obtaining the current time, and determining whether the current time is in the second preset time period in the morning, and determining whether the current time is in the second preset time period in the evening;

[0030] When the current moment is in the second preset time period in the morning, obtaining light information outside the target tea garden area, and judging whether there is sunlight at the current moment according to the light information;

[0031] When there is sunlight at the current moment, obtain the solar altitude angle h and solar azimuth angle A at the current moment; wherein the solar altitude angle is the vertical altitude angle of the sun in the sky, and the solar azimuth angle is the horizontal direction angle of the sun in the sky;

[0032] The nozzle tilt angle θ1 of the second nozzle is determined according to the formula θ1=h-α, so that the nozzle tilt angle θ1 matches the solar altitude angle h, and then the second nozzle is controlled to enter the spray mode; wherein the nozzle tilt angle θ1 is the angle between the second nozzle and the horizontal plane, α is the height adjustment angle, and the second nozzle is rotatably mounted on the first side of the photovoltaic panel assembly;

[0033] Determine the nozzle azimuth angle β1 of the second nozzle according to the formula β1=A+γ, and adjust the second nozzle to the nozzle azimuth angle β1, so that the nozzle azimuth angle β1 matches the solar azimuth angle A; wherein the nozzle azimuth angle β1 is the angle between the second nozzle and the due south direction;

[0034] Alternatively, when the current moment is in the second preset time period in the evening, obtaining the light information outside the target tea garden area, and judging whether there is sunlight at the current moment according to the light information;

[0035] When there is sunlight at the current moment, obtain the solar altitude angle h and solar azimuth angle A at the current moment;

[0036] The nozzle inclination angle θ2 of the third nozzle is determined according to the formula θ2=h-α, so that the nozzle inclination angle θ2 matches the solar altitude angle h, and then the third nozzle is controlled to enter the spray mode; wherein the nozzle inclination angle θ2 is the angle between the third nozzle and the horizontal plane, and the third nozzle is rotatably mounted on the second side of the photovoltaic panel assembly, and the second side and the first side are relatively arranged on both sides of the photovoltaic panel assembly;

[0037] According to the formula β2=A+γ, the nozzle azimuth angle β2 of the third nozzle is determined and adjusted to the nozzle azimuth angle β2, so that the nozzle azimuth angle β2 matches the solar azimuth angle A; wherein the nozzle azimuth angle β2 is the angle between the third nozzle and the due south direction.

[0038] Preferably, the second preset time period in the morning is 6:00-8:00 in the morning, and the second preset time period in the evening is 17:00-19:00 in the evening.

[0039] The present invention also provides a photovoltaic tea garden water replenishment electronic device, comprising:

[0040] A soil moisture acquisition unit, used to acquire the current soil moisture of the target tea garden area under the photovoltaic panel assembly;

[0041] a soil moisture determination unit, configured to determine whether the current soil moisture is less than the ideal soil moisture; when the current soil moisture is less than the ideal soil moisture, determine the difference between the ideal soil moisture and the current soil moisture, and determine whether the difference is greater than a first preset threshold;

[0042] The water replenishment analysis unit is used to determine that the target tea garden area is in a drought state when the difference is greater than a first preset threshold value, and control the first nozzle to enter a water spraying mode to replenish water to the target tea garden area; when the difference is less than or equal to the first preset threshold value, determine that the soil moisture in the target tea garden area is within a normal range, and control the first nozzle to be in a closed state.

[0043] The present invention also provides a photovoltaic tea garden, comprising a plurality of photovoltaic panel assemblies, a plurality of first nozzles, a water supply assembly and a control system, wherein each of the photovoltaic panel assemblies is erected above a tea tree through a support frame, each of the first nozzles can be rotatably mounted at the bottom of the photovoltaic panel assembly, the spraying area of ​​each of the first nozzles matches the target tea garden area, the first nozzles have a water spraying mode and a spraying mode, the water supply assembly is used to supply water to the first nozzles, the first nozzles are signal-connected to the control system, the control system comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the water replenishment method for the photovoltaic tea garden as described above are implemented.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] The present invention provides a photovoltaic tea garden and a water replenishment method and an electronic device thereof. By obtaining the current soil moisture of the target tea garden area under the photovoltaic panel assembly, when the current soil moisture is less than the ideal soil moisture, the difference between the ideal soil moisture and the current soil moisture is determined, and when the difference is greater than a first preset threshold, the first nozzle is controlled to enter a water spraying mode to replenish water to the target tea garden area. When the difference is less than or equal to the first preset threshold, it is determined that the soil moisture of the target tea garden area is within a normal range, and the first nozzle is controlled to be in a closed state. The present application can realize timely water replenishment in the tea garden, avoid waste of water resources, do not need to rely on traditional artificial irrigation, greatly improve irrigation efficiency, reduce labor costs, and effectively ensure the growth conditions and quality of tea trees. By calculating the current water demand and the required water spraying amount of the tea tree, accurate water replenishment of the tea garden area can be achieved, which can not only avoid waste of resources caused by excessive irrigation, but also ensure that the tea tree can obtain an appropriate amount of water to maintain normal growth. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0047] Figure 1 It is a schematic diagram of a flow chart in one embodiment of the present invention;

[0048] Figure 2 The flowchart is a schematic diagram of the specific steps of controlling the first nozzle to enter the water spraying mode in step S31 in one embodiment of the present invention to replenish water to the target tea garden area;

[0049] Figure 3 1 is a flow chart showing steps further included after step S32 in one embodiment of the present invention.

[0050] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0051] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0053] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0054] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0055] Please see attached Figures 1 to 3 In one embodiment of the present invention, a method for replenishing water in a photovoltaic tea garden comprises the following steps:

[0056] S1, obtaining the current soil moisture of the target tea garden area under the photovoltaic panel assembly, and determining whether the current soil moisture is less than the ideal soil moisture;

[0057] S2, when the current soil moisture is less than the ideal soil moisture, determining the difference between the ideal soil moisture and the current soil moisture, and judging whether the difference is greater than a first preset threshold;

[0058] S31, when the difference is greater than a first preset threshold, it is determined that the target tea garden area is in a drought state, and the first nozzle is controlled to enter a water spraying mode to replenish water to the target tea garden area; wherein the first nozzle is rotatably mounted at the bottom of the photovoltaic panel assembly, the spraying area of ​​the first nozzle matches the target tea garden area, and the first nozzle has a water spraying mode and a spraying mode;

[0059] S32, when the difference is less than or equal to a first preset threshold, it is determined that the soil moisture in the target tea garden area is within a normal range, and the first nozzle is controlled to be in a closed state.

[0060] Specifically, the present application first obtains the current soil moisture of the target tea garden area under the photovoltaic panel assembly. The acquisition method includes but is not limited to the use of a soil moisture meter, an electromagnetic wave indirect measurement method, etc. The definition of the target tea garden area can be set according to actual needs. Preferably, each photovoltaic panel assembly includes a plurality of photovoltaic panels arranged in a matrix and a support frame for supporting the photovoltaic panels. The construction height of the tea garden photovoltaic panels is 2.6 to 3.0 meters. As a preferred example, each photovoltaic panel is 10 meters long and 4 meters wide. For example, the area corresponding to the bottom of a photovoltaic panel is used as the target tea garden area, and a first nozzle is set under each photovoltaic panel, and the spraying area of ​​the first nozzle is matched with the area of ​​the target tea garden area; the current soil moisture obtained is compared with the preset ideal soil moisture. The ideal soil moisture can be set according to the growth requirements and soil characteristics of the tea tree, or pre-set according to experience or determined through historical soil moisture data and historical tea tree growth data. For example, the appropriate soil moisture range for the current growth stage of the tea tree variety can be determined first, and the lower limit of the soil moisture range is used as the ideal soil moisture. Finally, by controlling the subsequent nozzles, it is ensured that the tea tree can obtain better growth conditions, thereby improving the quality of the tea tree.

[0061] If the current soil moisture is less than the ideal soil moisture, it is further determined whether the difference between the current soil moisture and the ideal soil moisture is greater than a first preset threshold. When the difference is greater than the first preset threshold, it is determined that the target tea garden area is in a drought state and needs to be replenished with water in time.

[0062] As a specific example, the current soil moisture is 30%, the ideal soil moisture is set to 50%, the first preset threshold is set to 15%, and the difference between the ideal soil moisture and the current soil moisture is 20%. At this time, the difference is greater than the first preset threshold, and timely water replenishment is required. At this time, the first nozzle installed at the bottom of the photovoltaic panel assembly is controlled to enter the water spraying mode. The first nozzle is rotatable, and its spraying area matches the target tea garden area to ensure uniform water replenishment. The first nozzle has a water spraying mode and a spraying mode. After entering the water spraying mode, the tea trees in the target tea garden area are irrigated with water in time; if the difference is less than or equal to the first preset threshold, it is determined that the soil moisture is within the normal range, and no water replenishment is required, and the first nozzle remains closed.

[0063] This application scheme can achieve timely water replenishment in the tea garden and avoid waste of water resources by monitoring soil moisture and judging whether water replenishment is needed based on the difference. This application does not need to rely on traditional artificial irrigation, greatly improves irrigation efficiency, reduces labor costs, and effectively guarantees the growth conditions and quality of tea trees.

[0064] As a preferred embodiment, in step S31, controlling the first nozzle to enter the water spraying mode to replenish water to the target tea garden area specifically includes the following steps:

[0065] S311, using the formula ETC = K C *ET0 determines the current water demand ETC of the tea trees in the target tea garden area; where K C is the water requirement coefficient of tea tree, ET0 is the evapotranspiration of reference crop;

[0066] Specifically, we first determine the water requirement of the tea tree under the current conditions, K C is the water requirement coefficient of tea trees, which varies according to the growth period of tea trees. It can be obtained by querying the crop water requirement coefficient database or based on regional experience data. For example, the water requirement coefficient of tea trees K C =0.7. ET0 is the reference crop evapotranspiration. The most common method is to calculate ET0 through data from weather stations. The unit is usually millimeter / day (mm / day) or liter / day (L / day). For example, the reference crop evapotranspiration ET0 is 5mm / day. This part is the mature technical content of the existing technology and will not be elaborated here.

[0067] S312, using the formula Q = ETC * S * (H a -H t ) Determine the required watering volume Q for the target tea garden area; where S is the area of ​​the target tea garden area, H a is the ideal soil moisture, H t is the current soil moisture;

[0068] It is worth noting that due to the water requirement coefficient K of tea trees C The unit is mm / day, which is now converted to L / m2. 2 ), since 1 mm of water depth is equivalent to 1 liter of water covering 1 square meter (m 2 ) area. Therefore, the ETC value can be converted into liters per square meter (L / m 2 ). The water spraying amount Q required for the target tea garden area can be determined by the above formula, so as to determine the water spraying scheme of the first nozzle according to the water spraying amount Q;

[0069] S313, allocating the water spraying time T and the water spraying intensity I of the first nozzle according to the water spraying volume Q; wherein Q=T*I; wherein the unit of the water spraying time T is minute, and the unit of the water spraying intensity I is liter / minute.

[0070] S314, controlling the first nozzle to enter a water spraying mode according to the water spraying duration and water spraying intensity to replenish water to the target tea garden area.

[0071] This embodiment can achieve accurate water replenishment in the tea garden area by calculating the current water demand of the tea trees and the required water spraying amount, which can not only avoid the waste of resources caused by excessive irrigation, but also ensure that the tea trees can obtain an appropriate amount of water to maintain normal growth.

[0072] As a preferred embodiment, the step S1 of obtaining the current soil moisture of the target tea garden area under the photovoltaic panel assembly specifically includes the following steps:

[0073] S11, obtaining soil moisture H detected by a plurality of soil moisture meters arranged in the target tea garden area i ; Among them, H i is the soil moisture value measured by the i-th soil moisture meter;

[0074] S12, using the formula Calculate the average soil moisture value of all soil moisture meters The average soil moisture value as the current soil moisture of the target tea garden area; wherein N is the total number of soil moisture meters set in the target tea garden area, and a plurality of soil moisture meters are distributed in the target tea garden area at intervals. Preferably, a plurality of soil moisture meters are distributed in the target tea garden area as evenly as possible.

[0075] Specifically, this embodiment sets up multiple soil moisture meters in the target tea garden area for multi-point detection, which can more comprehensively reflect the moisture condition of the tea garden soil. The average soil moisture value is used as an indicator of the current soil moisture, which can more objectively reflect the overall moisture level of the tea garden soil. This embodiment uses a soil moisture meter to detect the soil moisture value, realizes effective monitoring of soil moisture, and provides more timely and accurate feedback for tea garden management.

[0076] Furthermore, the step S11 further includes the following steps:

[0077] Calculating the standard deviation of soil moisture values ​​of all soil moisture meters in the target tea garden area, and determining whether the standard deviation is greater than a second preset threshold;

[0078] When the standard deviation is greater than a second preset threshold, it is determined that the soil moisture distribution fluctuation in the target tea garden area is large, and the minimum value of the soil moisture values ​​of all soil moisture meters is taken as the current soil moisture, and the step of determining whether the current soil moisture is less than the ideal soil moisture is entered;

[0079] When the standard deviation is less than or equal to the second preset threshold, it is determined that the soil moisture distribution fluctuation in the target tea garden area is small, and the process proceeds to step S12.

[0080] Specifically, this embodiment calculates the standard deviation of the soil moisture values ​​detected by all soil moisture meters. The standard deviation is a statistic that measures the degree of data dispersion and can be used to reflect the fluctuations between soil moisture values. If the standard deviation is greater than the second preset threshold, it is determined that the soil moisture distribution in the target tea garden area fluctuates greatly, which may be caused by factors such as terrain, soil type, and vegetation coverage. In this case, the minimum value of the soil moisture values ​​of all soil moisture meters is used as the current soil moisture. The minimum value can better reflect the driest area in the tea garden, thereby ensuring that irrigation can cover the area that needs water the most. Then continue monitoring until the difference is less than or equal to the first preset threshold, and it is determined that the soil moisture in the target tea garden area is within the normal range, and the first nozzle is controlled to be in a closed state.

[0081] If the standard deviation is less than or equal to the second preset threshold, it is determined that the soil moisture distribution fluctuation in the target tea garden area is small, and the process proceeds to step S12 to calculate the average soil moisture value of all soil moisture meters and use the average soil moisture value as the current soil moisture in the target tea garden area.

[0082] Preferably, the step S314 further includes the step of: returning to step S1 at the first time point when the water spraying time after the first nozzle is turned on ends.

[0083] Specifically, by re-detecting the soil moisture after the water spraying is completed, the irrigation effect is quickly fed back based on the change in soil moisture after the water spraying. If the soil moisture reaches the aforementioned set conditions, the first nozzle is closed. If the aforementioned set conditions are not reached, the irrigation time is extended until the soil moisture reaches the set conditions to ensure accurate irrigation.

[0084] As a preferred embodiment, the step S32 further includes the following steps:

[0085] S41, obtaining the current time, and determining whether the current time is in the first preset time period in the morning, and determining whether the current time is in the first preset time period in the evening;

[0086] S42, when any one of the current moment is in the first preset time period in the morning and the current moment is in the first preset time period in the evening is established, the first nozzle is controlled to enter the spray mode, wherein each spraying time is 10 minutes to 30 minutes, and the water consumption is 1L-3L / square meter each time.

[0087] Specifically, first obtain the current time, and then determine whether this time is in the first preset time period in the morning (for example, 6 am to 8 am) or the first preset time period in the evening (for example, 5 pm to 7 pm). It should be noted that due to the shielding effect of the photovoltaic panel assembly, the tea trees are hindered from receiving natural dew. In order to make up for this deficiency, this example simulates the dew produced in nature and replenishes the dew in time, so that the tea trees under the photovoltaic panel assembly can receive dew and replenish water every morning and evening like the tea trees in the open tea garden, eliminating the growth hindrance caused by the shielding of the solar photovoltaic panels in the photovoltaic tea garden and the inability to accept natural dew, and effectively improving the quality of tea. The time of each spraying is controlled between 10 minutes and 30 minutes, and the water consumption is controlled between 1 liter and 3 liters per square meter to ensure that the tea trees obtain an appropriate amount of water without causing excessive wetting or waste.

[0088] As another preferred embodiment, the step S32 further includes the following steps:

[0089] Get the current time, and determine whether the current time is in the second preset time period in the morning, and determine whether the current time is in the second preset time period in the evening; as a preferred example, the second preset time period in the morning is 6:00-8:00 in the morning, and the second preset time period in the evening is 17:00-19:00 in the evening.

[0090] When the current moment is in the second preset time period in the morning, the light information outside the target tea garden area is obtained, and it is determined whether there is sunlight irradiation at the current moment according to the light information; when the current moment is in the second preset time period in the morning, or when the current moment is in the second preset time period in the evening, the light information outside the target tea garden area is obtained, and it is determined whether there is sunlight irradiation at the current moment according to the light information. For example, it can be determined by a light sensor or weather forecast data.

[0091] When there is sunlight at the current moment, obtain the solar altitude angle h and solar azimuth angle A at the current moment; wherein the solar altitude angle is the vertical altitude angle of the sun in the sky, and the solar azimuth angle is the horizontal direction angle of the sun in the sky;

[0092] The nozzle tilt angle θ1 of the second nozzle is determined according to the formula θ1=h-α, so that the nozzle tilt angle θ1 matches the solar altitude angle h, and then the second nozzle is controlled to enter the spray mode; wherein the nozzle tilt angle θ1 is the angle between the second nozzle and the horizontal plane, α is the height adjustment angle, and the second nozzle is rotatably mounted on the first side of the photovoltaic panel assembly;

[0093] Determine the nozzle azimuth angle β1 of the second nozzle according to the formula β1=A+γ, and adjust the second nozzle to the nozzle azimuth angle β1, so that the nozzle azimuth angle β1 matches the solar azimuth angle A; wherein the nozzle azimuth angle β1 is the angle between the second nozzle and the due south direction;

[0094] Specifically, in the presence of sunlight, the solar altitude angle h and solar azimuth angle A at the current moment are obtained. The solar altitude angle is the vertical altitude angle of the sun in the sky, that is, the angle between the center of the sun and the horizon, which can be calculated using the solar altitude angle formula; the solar azimuth angle is the horizontal direction angle of the sun in the sky, that is, the angle between the center of the sun and the south direction. The solar azimuth angle formula can be used for calculation. Both parts can be obtained by existing mature technical means and will not be elaborated here.

[0095] In order to maximize the diffuse reflection effect, the nozzle inclination angle should be close to the solar altitude angle h, but slightly smaller than h, so that the water mist can scatter the sunlight more evenly. Therefore, the nozzle inclination angle θ1 of the second nozzle is determined according to the formula θ1=h-α, so that the nozzle inclination angle θ1 matches the solar altitude angle h, where α is the height adjustment angle, which is an adjustment angle smaller than h, preferably between 5° and 10°.

[0096] In order to maximize the diffuse reflection effect, the nozzle azimuth angle is relative to the solar azimuth angle A, and the nozzle azimuth angle β1 of the second nozzle is determined according to the formula β1=A+γ, where γ is an adjustment angle less than A, preferably between 5° and 10°.

[0097] Alternatively, when the current moment is in the second preset time period in the evening, obtaining the light information outside the target tea garden area, and judging whether there is sunlight at the current moment according to the light information;

[0098] When there is sunlight at the current moment, obtain the solar altitude angle h and solar azimuth angle A at the current moment;

[0099] The nozzle inclination angle θ2 of the third nozzle is determined according to the formula θ2=h-α, so that the nozzle inclination angle θ2 matches the solar altitude angle h, and then the third nozzle is controlled to enter the spray mode; wherein the nozzle inclination angle θ2 is the angle between the third nozzle and the horizontal plane, and the third nozzle is rotatably mounted on the second side of the photovoltaic panel assembly, and the second side and the first side are relatively arranged on both sides of the photovoltaic panel assembly;

[0100] According to the formula β2=A+γ, the nozzle azimuth angle β2 of the third nozzle is determined and adjusted to the nozzle azimuth angle β2, so that the nozzle azimuth angle β2 matches the solar azimuth angle A; wherein the nozzle azimuth angle β2 is the angle between the third nozzle and the due south direction.

[0101] Specifically, the control principle of the third nozzle is the same as the control logic of the second nozzle.

[0102] It should be noted that tea trees are shade-loving and moisture-tolerant plants. They do not like strong direct sunlight, but prefer soft, diffuse light. In high mountain tea gardens, due to the clouds and mist, the direct sunlight is scattered by the clouds and mist into diffuse reflection light. Diffuse reflection can promote the synthesis of amino acids and chlorophyll, is conducive to the accumulation of nitrogen-containing compounds and aromatic substances, keeps the buds and leaves tender, and improves the overall quality of tea. However, due to the shielding effect of the photovoltaic panel, the diffuse reflection effect is weakened. Therefore, this embodiment sets the second and third nozzles, and the nozzles follow the angle of sunlight to spray, thereby enhancing the diffuse reflection effect of sunlight.

[0103] In addition, since the sun is located in the east and the west respectively during the second preset time period in the morning and the second preset time period in the evening, the second nozzle is rotatably installed on the first side of the photovoltaic panel assembly, and the third nozzle is rotatably installed on the second side of the photovoltaic panel assembly. The second side and the first side are relatively arranged on both sides of the photovoltaic panel assembly. During the second preset time period in the morning, the second nozzle follows the angle of sunlight to spray, and during the second preset time period in the evening, the third nozzle follows the angle of sunlight to spray. The duration of the spraying can be set according to actual needs, for example, 30 minutes can be sprayed every day.

[0104] The present invention also provides a photovoltaic tea garden water replenishment electronic device, comprising:

[0105] A soil moisture acquisition unit, used to acquire the current soil moisture of the target tea garden area under the photovoltaic panel assembly;

[0106] a soil moisture determination unit, configured to determine whether the current soil moisture is less than the ideal soil moisture; when the current soil moisture is less than the ideal soil moisture, determine the difference between the ideal soil moisture and the current soil moisture, and determine whether the difference is greater than a first preset threshold;

[0107] The water replenishment analysis unit is used to determine that the target tea garden area is in a drought state when the difference is greater than a first preset threshold value, and control the first nozzle to enter a water spraying mode to replenish water to the target tea garden area; when the difference is less than or equal to the first preset threshold value, determine that the soil moisture in the target tea garden area is within a normal range, and control the first nozzle to be in a closed state.

[0108] The present invention also provides a photovoltaic tea garden, comprising a plurality of photovoltaic panel assemblies, a plurality of first nozzles, a water supply assembly (water can be supplied by a conventional water supply pipeline) and a control system, wherein each of the photovoltaic panel assemblies is erected above a tea tree through a support frame, each of the first nozzles can be rotatably mounted at the bottom of the photovoltaic panel assembly, the spraying area of ​​each of the first nozzles matches the target tea garden area, the first nozzles have a water spraying mode and a spraying mode, the water supply assembly is used to supply water to the first nozzles, the first nozzles are signal-connected to the control system, the control system comprises a memory, a processor and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the water replenishment method for the photovoltaic tea garden as described above are implemented.

[0109] Furthermore, when a soil moisture meter is used to detect the soil moisture value, the soil moisture meter is connected to the control system to facilitate analysis and decision-making on the soil moisture value; further, the second nozzle and the third nozzle are both connected to the control system to facilitate corresponding control of the second nozzle and the third nozzle.

[0110] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A water replenishment method for a photovoltaic tea garden, characterized in that: The following steps are involved: S1, obtaining the current soil moisture of the target tea garden area under the photovoltaic panel assembly, and determining whether the current soil moisture is less than the ideal soil moisture; S2, when the current soil moisture is less than the ideal soil moisture, determining the difference between the ideal soil moisture and the current soil moisture, and judging whether the difference is greater than a first preset threshold; S31, when the difference is greater than a first preset threshold, it is determined that the target tea garden area is in a drought state, and the first nozzle is controlled to enter a water spraying mode to replenish water to the target tea garden area; wherein the first nozzle is rotatably mounted at the bottom of the photovoltaic panel assembly, the spraying area of ​​the first nozzle matches the target tea garden area, and the first nozzle has a water spraying mode and a spraying mode; S32, when the difference is less than or equal to a first preset threshold, it is determined that the soil moisture in the target tea garden area is within a normal range, and the first nozzle is controlled to be in a closed state.

2. The water replenishment method for a photovoltaic tea garden according to claim 1, characterized in that: In step S31, controlling the first nozzle to enter the water spraying mode to replenish water to the target tea garden area specifically includes the following steps: S311, using the formula ETC = K C *ET0 determines the current water demand ETC of the tea trees in the target tea garden area; where K C is the water requirement coefficient of tea tree, ET0 is the evapotranspiration of reference crop; S312, using the formula Q = ETC * S * (H a -H t ) Determine the required watering amount Q for the target tea garden area; where S is the area of ​​the target tea garden area, Ha is the ideal soil moisture, and H t is the current soil moisture; S313, allocating the water spraying duration T and the water spraying intensity I of the first nozzle according to the water spraying amount Q; wherein Q=T*I; S314, controlling the first nozzle to enter a water spraying mode according to the water spraying duration and water spraying intensity to replenish water to the target tea garden area.

3. The water replenishment method for a photovoltaic tea garden according to claim 1, characterized in that: The step S1 of obtaining the current soil moisture of the target tea garden area under the photovoltaic panel assembly specifically includes the following steps: S11, obtaining soil moisture H detected by a plurality of soil moisture meters arranged in the target tea garden area i ; Among them, H i is the soil moisture value measured by the i-th soil moisture meter; S12, using the formula Calculate the average soil moisture value of all soil moisture meters The average soil moisture value as the current soil moisture of the target tea garden area; wherein N is the total number of soil moisture meters set in the target tea garden area, and a plurality of soil moisture meters are distributed at intervals in the target tea garden area.

4. The method for replenishing water in a photovoltaic tea garden according to claim 3, characterized in that: The step S11 further includes the following steps: Calculating the standard deviation of soil moisture values ​​of all soil moisture meters in the target tea garden area, and determining whether the standard deviation is greater than a second preset threshold; When the standard deviation is greater than a second preset threshold, it is determined that the soil moisture distribution fluctuation in the target tea garden area is large, and the minimum value of the soil moisture values ​​of all soil moisture meters is taken as the current soil moisture, and the step of determining whether the current soil moisture is less than the ideal soil moisture is entered; When the standard deviation is less than or equal to the second preset threshold, it is determined that the soil moisture distribution fluctuation in the target tea garden area is small, and the process proceeds to step S12.

5. The water replenishment method for a photovoltaic tea garden according to claim 2, characterized in that: The step S314 also includes the following steps: at the first time point when the water spraying time after the first nozzle is turned on ends, returning to step S1.

6. The method for replenishing water in a photovoltaic tea garden according to claim 2, characterized in that: The step S32 further includes the following steps: S41, obtaining the current time, and determining whether the current time is in the first preset time period in the morning, and determining whether the current time is in the first preset time period in the evening; S42, when any one of the current moment is in the first preset time period in the morning and the current moment is in the first preset time period in the evening is established, the first nozzle is controlled to enter the spray mode, wherein each spraying time is 10 minutes to 30 minutes, and the water consumption is 1L-3L / square meter each time.

7. The method for replenishing water in a photovoltaic tea garden according to claim 2, characterized in that: The step S32 further includes the following steps: Obtaining the current time, and determining whether the current time is in the second preset time period in the morning, and determining whether the current time is in the second preset time period in the evening; When the current moment is in the second preset time period in the morning, obtaining light information outside the target tea garden area, and judging whether there is sunlight at the current moment according to the light information; When there is sunlight at the current moment, obtain the solar altitude angle h and solar azimuth angle A at the current moment; wherein the solar altitude angle is the vertical altitude angle of the sun in the sky, and the solar azimuth angle is the horizontal direction angle of the sun in the sky; The nozzle tilt angle θ1 of the second nozzle is determined according to the formula θ1=h-α, so that the nozzle tilt angle θ1 matches the solar altitude angle h, and then the second nozzle is controlled to enter the spray mode; wherein the nozzle tilt angle θ1 is the angle between the second nozzle and the horizontal plane, α is the height adjustment angle, and the second nozzle is rotatably mounted on the first side of the photovoltaic panel assembly; Determine the nozzle azimuth angle β1 of the second nozzle according to the formula β1=A+γ, and adjust the second nozzle to the nozzle azimuth angle β1, so that the nozzle azimuth angle β1 matches the solar azimuth angle A; wherein the nozzle azimuth angle β1 is the angle between the second nozzle and the due south direction; Alternatively, when the current moment is in the second preset time period in the evening, obtaining the light information outside the target tea garden area, and judging whether there is sunlight at the current moment according to the light information; When there is sunlight at the current moment, obtain the solar altitude angle h and solar azimuth angle A at the current moment; The nozzle inclination angle θ2 of the third nozzle is determined according to the formula θ2=h-α, so that the nozzle inclination angle θ2 matches the solar altitude angle h, and then the third nozzle is controlled to enter the spray mode; wherein the nozzle inclination angle θ2 is the angle between the third nozzle and the horizontal plane, and the third nozzle is rotatably mounted on the second side of the photovoltaic panel assembly, and the second side and the first side are relatively arranged on both sides of the photovoltaic panel assembly; According to the formula β2=A+γ, the nozzle azimuth angle β2 of the third nozzle is determined and adjusted to the nozzle azimuth angle β2, so that the nozzle azimuth angle β2 matches the solar azimuth angle A; wherein the nozzle azimuth angle β2 is the angle between the third nozzle and the due south direction.

8. The method for replenishing water in a photovoltaic tea garden according to claim 7, characterized in that: The second preset time period in the morning is 6:00-8:00 in the morning, and the second preset time period in the evening is 17:00-19:00 in the evening.

9. An electronic water replenishment device for a photovoltaic tea garden, characterized in that: include: A soil moisture acquisition unit, used to acquire the current soil moisture of the target tea garden area under the photovoltaic panel assembly; A soil moisture determination unit, used to determine whether the current soil moisture is less than an ideal soil moisture; When the current soil moisture is less than the ideal soil moisture, determining a difference between the ideal soil moisture and the current soil moisture, and judging whether the difference is greater than a first preset threshold; a water replenishment analysis unit, configured to determine that the target tea garden area is in a drought state when the difference is greater than a first preset threshold value, and control the first sprinkler head to enter a water spraying mode to replenish water to the target tea garden area; When the difference is less than or equal to a first preset threshold, it is determined that the soil moisture in the target tea garden area is within a normal range, and the first nozzle is controlled to be in a closed state.

10. A photovoltaic tea garden, characterized in that: It includes multiple photovoltaic panel assemblies, multiple first nozzles, a water supply assembly and a control system, wherein each of the photovoltaic panel assemblies is erected above the tea trees through a support frame, each of the first nozzles can be rotatably installed at the bottom of the photovoltaic panel assembly, the spraying area of ​​each of the first nozzles matches the target tea garden area, the first nozzles have a water spraying mode and a misting mode, the water supply assembly is used to supply water to the first nozzles, the first nozzles are connected to the control system by signal, the control system includes a memory, a processor and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the photovoltaic tea garden water replenishment method as described in any one of claims 1 to 8 are implemented.

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