Intelligent water-saving and energy-saving vegetable greenhouse

Abstract

The intelligent water-saving and energy-saving vegetable greenhouse comprises a controller, a greenhouse roof and an initial rainwater discarding device, a plurality of rainwater guiding grooves are formed in the greenhouse roof, the initial rainwater discarding device comprises a rainwater container and a U-shaped pipe, a filtering cavity is formed in the top of the rainwater container and communicates with the rainwater container through a water collecting opening, one side of the filtering cavity communicates with the rainwater guiding grooves, and the other side of the filtering cavity communicates with the U-shaped pipe; one end of the U-shaped pipe is communicated with the bottom of the rainwater container, the other end of the U-shaped pipe is a drainage end, the water flow of the drainage end of the U-shaped pipe is smaller than that of the water collecting opening, the water collecting opening is connected with a floating ball through a rope, and the radial size of the floating ball is larger than the radial size of the water collecting opening; a drip irrigation pipeline is arranged in the greenhouse and communicated with the water storage tank through a water pump, and the controller is connected with the water pump. According to the greenhouse, the rainwater collection efficiency and cleanliness can be improved, the integrated design of rainwater collection, automatic irrigation and temperature and humidity adjustment is achieved, and the integration, the environmental protection property and the resource utilization efficiency of the greenhouse are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of water resource utilization and agricultural engineering, and in particular to an intelligent water-saving and energy-saving vegetable greenhouse. Background Art

[0002] my country's agricultural development faces challenges from irrational water use and waste, particularly in water-scarce regions, where irrigation water utilization is inefficient. To promote sustainable agricultural development, rainwater resource utilization has become a key strategy to alleviate water scarcity and is considered an important measure to safeguard agricultural production in my country.

[0003] In vegetable greenhouses, rainwater collection structures are typically installed on the roof. However, the initial flushing of rainwater can lead to water pollution. This initial flushing of rainwater onto the roof dissolves pollutants such as acidic gases, vehicle exhaust, and industrial emissions from the atmosphere, and flushes pollutants from the roof, including nutrients such as nitrogen and phosphorus, as well as solid debris. If this contaminated initial rainwater is used directly for irrigation without treatment, it can negatively impact crops. Currently, to prevent the impact of contaminated rainwater on crops, filtration systems, such as filter tanks or sedimentation tanks, are typically established to purify the rainwater through chemical or physical treatment. These processes are complex, and the entire rainwater utilization system carries high operating costs and maintenance burdens.

[0004] In addition, current research on "green" vegetable greenhouses at home and abroad mainly focuses on reducing labor intensity and improving intelligence levels, but often ignores the importance of environmental protection, energy conservation and efficient use of water resources. Moreover, research often focuses on single technologies such as rainwater collection or solar energy utilization, but lacks a multifunctional integrated system design that integrates rainwater collection, rainwater irrigation and planting environment regulation.

[0005] Therefore, how to integrate the utilization of clean rainwater resources, water resource management efficiency and control technology to realize the integrated design of greenhouse rainwater collection, automated irrigation and temperature and humidity regulation, and improve the environmental protection performance and resource utilization efficiency of the greenhouse has become an urgent problem to be solved. Summary of the Invention

[0006] In order to solve the problems in the background technology, the present invention proposes an intelligent water-saving and energy-saving vegetable greenhouse, comprising a controller, a roof and an initial rainwater abandonment device, wherein the roof is provided with a plurality of rain guide grooves arranged at intervals, and the initial rainwater abandonment device comprises a rainwater collection container and a U-shaped tube, a filter chamber is provided on the top of the rainwater collection container, the filter chamber and the rainwater collection container are connected through a water collection port, one side of the filter chamber is connected to the rain guide groove, and the other side of the filter chamber is connected to a water storage tank, an overflow port is provided on the top of the water storage tank, one end of the U-shaped tube is connected to the bottom of the rainwater collection container, and the other end of the U-shaped tube is a drainage end, the water flow rate of the drainage end of the U-shaped tube is less than the water flow rate of the water collection port, a float is connected to the water collection port by a rope, and the radial size of the float is larger than the radial size of the water collection port; A drip irrigation pipeline is provided in the greenhouse, the drip irrigation pipeline is connected to the water storage tank through a water pump, and the controller is connected to the water pump. Preferably, the rainwater collection container includes an upper tube body and a lower tube body, the upper part of the lower tube body is sleeved on the outer side of the lower part of the upper tube body, the upper tube body and the lower tube body are slidably connected, the lower tube body is connected to the output end of the electric push rod, the extension direction of the electric push rod output end is consistent with the sliding direction of the lower tube body, and the controller is connected to the electric push rod; The lower tube body is connected to the U-shaped tube through a rubber tube.

[0007] Preferably, an infrared rain sensor is provided under the roof, the portion of the roof corresponding to the infrared rain sensor is made of glass, and the controller is connected to the infrared rain sensor.

[0008] Preferably, a temperature and humidity sensor is provided in the greenhouse, a heater, a humidifier and a blower are provided on the side walls of the greenhouse, and the controller is connected to the temperature and humidity sensor, the heater, the humidifier and the blower respectively.

[0009] Preferably, a soil moisture sensor is provided in the soil in the greenhouse, the soil moisture sensor is located on one side of the crop roots, and the soil moisture sensor is connected to the controller.

[0010] Preferably, it further comprises a solar panel, the horizontal angle of the solar panel is 70 degrees, and the solar panel is respectively connected to the controller, water pump, electric push rod, soil moisture sensor, temperature and humidity sensor, heater, humidifier and blower.

[0011] Preferably, a sloped top structure is provided between two adjacent rain guide grooves.

[0012] Preferably, the rain guide trough is connected to the filter chamber via a first rain guide pipe, and the water storage tank is connected to the filter chamber via a second rain guide pipe; A filter cartridge is provided in the filter cavity, the outer shape of the filter cartridge matches the shape of the inner wall of the filter cavity, the portion of the filter cartridge corresponding to the first rain guide pipe is a through opening, and the portion of the filter cartridge corresponding to the water collection port and the second rain guide pipe is respectively provided with a plurality of filter mesh holes.

[0013] Preferably, a water storage tank capacity design method based on an analytical probabilistic hydrological model is also included, the design method comprising the following steps: S1. Based on the historical long-series hourly rainfall data and the rainfall event division method, the rainfall data of the study area were statistically analyzed to obtain the three rainfall characteristics v, u and b, and the exponential distribution parameters and exponential distribution functions of the three characteristics were determined. The exponential distribution parameters corresponding to v, u and b are , and , the exponential distribution functions corresponding to v, u and b are , and ; In the formula, v is the rainfall amount, u is the rainfall duration, and b is the rainfall interval. is the symbol of the average operator; S2. Calculate the runoff v generated by the roof r , the mathematical equation expression is:

[0014] Where vff is the initial flushing rainwater volume, which is the runoff part with a high degree of pollution. When the rainwater is collected, it is treated by the initial rainwater discharge device. φ is the comprehensive runoff coefficient. S4. Based on the derived probability distribution theory, the runoff generated by the roof is calculated as v r The probability distribution function (CDF) when , the mathematical expression of the probability distribution function is: ; S5. Derivate the probability distribution function to obtain the runoff generated by the roof as v r The probability density function (PDF) when , the mathematical expression of the probability density function is: ; S6. Derivation of the runoff v generated by the roof based on the probability density function r The expected value E(vr) and the average annual rainwater collection volume v of the water storage tank are calculated. h , v h The calculation formula is:

[0015] Where, , , G is the average daily irrigation water requirement for vegetables in the vegetable greenhouse during the dry period, p is the overflow of the water storage tank, A is the plane projection area of ​​the vegetable greenhouse roof, θ is the average number of rainfall events over many years, and E(p) is the expected value of the overflow; S7. Calculate the irrigation guarantee rate R of greenhouse vegetables during rainless drought e , R e The calculation formula is: ; S8. Calculate the irrigation guarantee rate R e The volume B of the water tank under the conditions, B calculation formula is: .

[0016] The beneficial effects of the present invention are: The present invention is provided with an initial rainwater discharge device, which can discharge the initial heavily polluted rainwater and collect the subsequent relatively clean rainwater, thereby avoiding damage to crops or soil due to the heavy pollution of the collected rainwater. It does not require a complicated rainwater purification process, improves the rainwater utilization rate and efficiency, and reduces the system cost.

[0017] The present invention is also provided with a drip irrigation pipeline, a sensor for detecting the environment in the greenhouse, and a heater, a humidifier, and a blower for adjusting the environment in the greenhouse. The water pump for supplying water to the drip irrigation pipeline and the sensors are uniformly controlled by a controller. Irrigation or temperature and humidity adjustment in the greenhouse are performed according to the detection conditions of the sensors, so that crops are in a suitable growth environment and can receive appropriate irrigation, thereby avoiding waste of water resources and improving resource utilization.

[0018] The present invention can improve the efficiency of rainwater collection and the neatness of the collected rainwater, and realize the integrated design of rainwater collection, automatic irrigation and temperature and humidity regulation, thereby improving the integration, environmental protection and resource utilization efficiency of the greenhouse. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the greenhouse of the present invention; Figure 3 This is a schematic structural diagram of the initial rainwater abandonment device of the present invention; Figure 4 for Figure 3 A magnified view of the structure at center A.

[0020] Numbers in the figure: 1. Overflow port; 2. Water storage tank; 3. Initial rain discharge device; 4. Solar panel; 5. Soil moisture sensor; 6. Water pump; 7. Humidifier; 8. Heater; 9. Blower; 10. Float; 11. Rainwater collection container; 111. Upper pipe body; 112. Lower pipe body; 12. Filter chamber; 13. Rubber tube; 14. U-shaped tube; 15. Filter cartridge; 151. Through port; 152. Filter mesh hole; 16. Rain gutter; 17. First rain guide pipe; 18. Second rain guide pipe; 19. Sloping roof structure; 20. Drain pipe; 21. Baffle; 22. Greenhouse; 23. Drip irrigation pipeline; 24. Rope; 25. Water collection port. DETAILED DESCRIPTION

[0021] In order to make the present invention clearer and more understandable, the technical solution of the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the given embodiment is only one of the implementation methods and does not represent all embodiments.

[0022] In this article, terms such as "inside, outside, up, and down" are established based on the positional relationships shown in the drawings. Depending on the different drawings, the corresponding positional relationships may also change accordingly. Therefore, they cannot be understood as absolute limitations on the scope of protection.

[0023] Combined with attachment Figure 1 -Attached Figure 4 , an intelligent water-saving and energy-saving vegetable greenhouse, comprising a controller, a roof and an initial rainwater abandonment device 3, the roof is provided with a plurality of intervally arranged rainwater guide grooves 16, the initial rainwater abandonment device 3 comprises a rainwater collection container 11 and a U-shaped tube 14, the top of the rainwater collection container 11 is provided with a filter chamber 12, the filter chamber 12 and the rainwater collection container 11 are connected through a water collection port 25, one side of the filter chamber 12 is connected to the rainwater guide groove 16, and the other side of the filter chamber 12 is connected to a water storage tank 2, the top of the water storage tank 2 is provided with an overflow port 1, the overflow port 1 is used to discharge excess water when the water level of the water storage tank 2 exceeds the design upper limit, to avoid water When the volume exceeds the upper limit of the water storage tank 2, excessive pressure is generated on the tank body, damaging the water storage tank 2, which plays a role in ventilation and pressure balance; one end of the U-shaped tube 14 is connected to the bottom of the rainwater collection container 11, and the other end of the U-shaped tube 14 is the drainage end. The drainage end of the U-shaped tube 14 is connected to a drainage pipe 20, and the drainage pipe 20 can be connected to the sewage pipe of the urban drainage pipe 20 network to achieve reasonable disposal of sewage; the water flow rate at the drainage end of the U-shaped tube 14 is less than the water flow rate of the water collection port 25, and the water collection port 25 is connected to a float 10 through a rope 24, and the radial dimension of the float 10 is greater than the radial dimension of the water collection port 25; A drip irrigation pipe 23 is provided in the greenhouse 22. The drip irrigation pipe 23 is connected to the water storage tank 2 through a water pump 6. The controller is connected to the water pump 6. The rainwater in the water storage tank 2 is pumped to the drip irrigation pipe 23 by the water pump 6. The crops in the greenhouse 22 are irrigated through the drip irrigation pipe 23. The drip irrigation pipe 23 evenly wets the soil with water in the form of water droplets, reducing water resource waste.

[0024] The rainwater collection process includes the following steps: A1. When it rains, rainwater falls into the rain gutter 16 and enters the filter chamber 12 from the rain gutter 16; A2. After being filtered by the filter chamber 12, the rainwater enters the rainwater collection container 11 through the water collection port 25. The capacity of the rainwater collection container 11 is not less than 20% of the current rainfall; Since the water flow rate at the drainage end of the U-shaped tube 14 is less than the water flow rate at the water collection port 25, the drainage volume of the rainwater collection container 11 is less than its intake volume, and the rainwater collection container 11 can temporarily store rainwater; A3. As rainwater enters, the float 10 in the rainwater collecting container 11 floats up under the action of rainwater until it blocks the water collection port 25. At this time, rainwater cannot enter the rainwater collecting container 11 and enters the water storage tank 2 through the filter chamber 12. The water storage tank 2 collects rainwater.

[0025] Specifically, the water flow rate at the drainage end of the U-shaped tube 14 can be made smaller than the water flow rate at the water collection port 25 by setting the cross-sectional area of ​​the drainage end opening to be smaller than the cross-sectional area of ​​the water collection port 25; or providing an electromagnetic water valve at the drainage end, wherein the electromagnetic water valve is connected to the controller, and the opening of the electromagnetic water valve is controlled by the controller so that the water flow rate through the electromagnetic water valve is smaller than the water flow rate through the water collection port 25.

[0026] The U-shaped tube 14 is provided to prevent the poisonous gas from rising along the sewage pipe to the water storage tank 2, thereby ensuring the safety of collecting rainwater.

[0027] Specifically, the cross section of the rain guide trough 16 is semicircular; a vertical baffle 21 with a height of 0.1 meters is provided at the edge of the roof to prevent rainwater from overflowing from the roof and improve the rainwater collection rate.

[0028] The rope 24 allows the float 10 to be suspended in the rainwater collection container 11, preventing the float 10 from adhering to the silt accumulated in the rainwater collection container 11 and affecting its movement. More specifically, to ensure that the float 10 can accurately float to the water collection port 25, a limit plate can be provided around the water collection port 25 in the rainwater collection container 11. The top of the limit plate is fixed to the top of the rainwater collection container 11, and the bottom of the limit plate extends downward. The bottom of the limit plate and the float 10 are not affected by buoyancy and are in the position they would be in when naturally suspended. The limit plate limits the movement path of the float 10 to prevent the float 10 from deviating from the water collection port 25 when floating up.

[0029] Specifically, the rainwater container 11 comprises an upper pipe body 111 and a lower pipe body 112, the lower pipe body 112 is sleeved on the outside of the lower part of the upper pipe body 111, the upper pipe body 111 is slidingly connected with the lower pipe body 112, the lower pipe body 112 is connected with the output end of an electric push rod, the telescopic direction of the output end of the electric push rod is consistent with the sliding direction of the lower pipe body 112, and the controller is connected with the electric push rod; the lower pipe body 112 is connected with the U-shaped pipe 14 through the rubber pipe 13. The lower pipe body 112 is pushed to slide relative to the upper pipe body 111 through the electric push rod, and then the capacity of the rainwater container 11 is changed, so that the capacity of the rainwater container 11 is not less than 20% of the current rainfall.

[0030] More specifically, an infrared rain sensor is arranged below the shed roof, the shed roof corresponding to the infrared rain sensor is made of glass, and the controller is connected with the infrared rain sensor. When raindrops fall on the surface of the shed roof at the infrared rain sensor, the infrared rain sensor can detect the raindrops through the glass, the raindrops can change the scattering or transmission of light, the infrared sensor can detect the size and intensity of the raindrops according to the scattering or transmission of light, and compare the light intensity received when the glass is dry and wet, to detect the current rainfall. The controller receives and processes the data measured by the infrared rain sensor, and sends instructions to the electric push rod, so that the electric push rod can change the capacity of the rainwater container 11 in combination with the measurement of the infrared rain sensor, so that the capacity of the rainwater container 11 is not less than 20% of the current rainfall.

[0031] Specifically, a temperature and humidity sensor is arranged in the greenhouse 22, a heater 8, a humidifier 7 and an air blower 9 are arranged on the side wall of the greenhouse 22, and the controller is connected with the temperature and humidity sensor, the heater 8, the humidifier 7 and the air blower 9 respectively. The temperature and humidity sensor is used for monitoring the air temperature and humidity in the greenhouse 22, the controller receives and processes the data detected by the temperature and humidity sensor, and sends instructions to the heater 8, the humidifier 7 or / and the air blower 9, to adjust the environmental conditions in the greenhouse 22. More specifically, the temperature and humidity sensor is located at a position with air circulation and sun-shading in the greenhouse 22, to improve the accuracy of the air temperature and humidity in the greenhouse 22.

[0032] Specifically, a soil moisture sensor 5 is arranged in the soil in the greenhouse 22, the soil moisture sensor 5 is located on the side of the crop roots, and the soil moisture sensor 5 is connected with the controller. The controller sends instructions to the water pump 6 according to the soil condition detected by the soil moisture sensor 5, to irrigate the crops. The installation depth of the soil moisture sensor 5 is adjusted according to the root depth of different crops, to accurately monitor the changes of the soil temperature and moisture content in the growth and development process of the crops, so as to realize precise irrigation.

[0033] More specifically, the drip irrigation pipeline 23 is provided with an adjusting device, which includes a pressure gauge, a gate valve and a flow regulator, and the controller is connected with the pressure gauge, the gate valve and the flow regulator respectively, so as to adjust the water pressure, opening and closing and flow of the drip irrigation pipeline 23, further improve the accuracy of irrigation, and ensure the effective use of water resources.

[0034] Specifically, the solar panel 4 is also included, the horizontal angle of the solar panel 4 is 70°, the absorption efficiency of the solar panel 4 to solar energy is improved, and the solar panel 4 is connected with the controller, the water pump 6, the electric push rod, the soil moisture sensor 5, the temperature and humidity sensor, the heater 8, the humidifier 7 and the air blower 9 respectively. The solar panel 4 converts solar energy into electric energy to provide power for the system of the greenhouse 22, which is environmentally friendly and energy-saving. More specifically, the solar panel 4 is arranged on the sunny side of the roof of the greenhouse 22.

[0035] More specifically, the data of each device and sensor in the greenhouse 22 can be uploaded to the cloud, and real-time monitoring and remote control can be realized through a mobile phone and a computer.

[0036] Specifically, a slope roof structure 19 is arranged between two adjacent rainwater guide grooves 16. The slope roof structure 19 facilitates the flow of rainwater into the rainwater guide grooves 16 on both sides, thereby improving the rainwater collection effect.

[0037] Specifically, the rainwater guide groove 16 is communicated with the filter cavity 12 through the first rainwater guide pipe 17, and the water storage tank 2 is communicated with the filter cavity 12 through the second rainwater guide pipe 18. The filter cylinder 15 is arranged in the filter cavity 12, the outer shape of the filter cylinder 15 matches the shape of the inner wall of the filter cavity 12, the part corresponding to the first rainwater guide pipe 17 of the filter cylinder 15 is a through opening 151, and a plurality of filter screen holes 152 are arranged in the parts corresponding to the water collecting port 25 and the second rainwater guide pipe 18 of the filter cylinder 15. Rainwater flows into the filter cylinder 15 in the filter cavity 12 through the first rainwater guide pipe 17 and the through opening 151, and when the rainwater flows into the rainwater container 11 or the second rainwater guide pipe 18 from the filter cylinder 15, the larger pollutants in the rainwater are filtered in the filter cylinder 15, so as to avoid the blockage or pollution caused by entering the rainwater container 11 or the second rainwater guide pipe 18. More specifically, the filter cavity 12 is open at the top, and the filter cylinder 15 is inserted into the filter cavity 12 from the top of the filter cavity 12, so as to facilitate the replacement or cleaning of the filter cylinder 15.

[0038] Specifically, the design method of the capacity of the water storage tank 2 based on the analytical probabilistic hydrological model is also included, and the design method includes the following steps: S1. Based on the historical long-series hourly rainfall data and the rainfall event division method, the rainfall data of the study area were statistically analyzed to obtain the three rainfall characteristics v, u and b, and the exponential distribution parameters and exponential distribution functions of the three characteristics were determined. The exponential distribution parameters corresponding to v, u and b are , and , the exponential distribution functions corresponding to v, u and b are , and ; Where v is the rainfall amount, u is the rainfall duration, b is the rainfall interval, and is the symbol of the average operator; S2. Calculate the runoff v generated by the roof r , the mathematical equation expression is:

[0039] Wherein, vff is the initial flushing rainwater volume, which is the runoff part with a high degree of pollution. When the rainwater is collected, it is processed by the initial rainwater discarding device 3, and φ is the comprehensive runoff coefficient; S4. Based on the derived probability distribution theory, the runoff generated by the roof is calculated as v r The probability distribution function (CDF) when , the mathematical expression of the probability distribution function is: ; S5. Derivate the probability distribution function to obtain the runoff generated by the roof as v r The probability density function (PDF) when , the mathematical expression of the probability density function is: ; S6. Obtain the runoff v generated by the roof based on the probability density function r The expected value E(vr) and the average annual rainwater collection volume v of water storage tank 2 are calculated. h , v h The calculation formula is:

[0040] Where, , , G is the average daily irrigation water requirement for vegetables in the vegetable greenhouse 22 during the dry period, p is the overflow of the water storage tank 2, A is the plane projection area of ​​the roof of the vegetable greenhouse 22, θ is the average number of rainfall events over many years, and E(p) is the expected value of the overflow; S7. Calculate the irrigation guarantee rate R of the vegetables in greenhouse 22 during the rainless drought period e , R e The calculation formula is: ; S8, calculating the irrigation guarantee rate R e the volume B of the water reservoir 2 under the condition, B is calculated by the following formula: While embodiments of the application have been shown and described, it will be understood that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the spirit and scope of the present application, which is defined by the appended claims and their equivalents.

Claims

1. An intelligent water-saving and energy-saving vegetable greenhouse, characterized by: The invention comprises a controller, a roof and an initial rainwater abandonment device (3), wherein the roof is provided with a plurality of rainwater guide grooves (16) arranged at intervals, and the initial rainwater abandonment device (3) comprises a rainwater collection container (11) and a U-shaped tube (14), wherein a filter chamber (12) is provided on the top of the rainwater collection container (11), wherein the filter chamber (12) and the rainwater collection container (11) are communicated through a water collection port (25), wherein one side of the filter chamber (12) is communicated with the rainwater guide groove (16), and the other side of the filter chamber (12) is communicated with the rainwater guide groove (16). One side is connected to a water storage tank (2), and an overflow port (1) is provided on the top of the water storage tank (2). One end of the U-shaped tube (14) is connected to the bottom of the rainwater collection container (11), and the other end of the U-shaped tube (14) is a drainage end. The water flow rate of the drainage end of the U-shaped tube (14) is smaller than the water flow rate of the water collection port (25). The water collection port (25) is connected to a float (10) via a rope (24), and the radial dimension of the float (10) is larger than the radial dimension of the water collection port (25); A drip irrigation pipeline (23) is provided in the greenhouse (22), the drip irrigation pipeline (23) is connected to the water storage tank (2) via a water pump (6), and the controller is connected to the water pump (6).

2. The intelligent water-saving and energy-saving vegetable greenhouse according to claim 1 is characterized by: The rainwater collection container (11) comprises an upper tube body (111) and a lower tube body (112), the upper portion of the lower tube body (112) is sleeved on the outer side of the lower portion of the upper tube body (111), the upper tube body (111) and the lower tube body (112) are slidably connected, the lower tube body (112) is connected to an electric push rod output end, the extension direction of the electric push rod output end is consistent with the sliding direction of the lower tube body (112), and the controller is connected to the electric push rod; The lower tube body (112) is connected to the U-shaped tube (14) via a rubber tube (13).

3. The intelligent water-saving and energy-saving vegetable greenhouse according to claim 2 is characterized by: An infrared rain sensor is provided below the roof, the portion of the roof corresponding to the infrared rain sensor is made of glass, and the controller is connected to the infrared rain sensor.

4. The intelligent water-saving and energy-saving vegetable greenhouse according to claim 3 is characterized by: A temperature and humidity sensor is provided in the greenhouse (22), a heater (8), a humidifier (7) and a blower (9) are provided on the side wall of the greenhouse (22), and the controller is connected to the temperature and humidity sensor, the heater (8), the humidifier (7) and the blower (9) respectively.

5. The intelligent water-saving and energy-saving vegetable greenhouse according to claim 4 is characterized in that: A soil moisture sensor (5) is provided in the soil in the greenhouse (22), the soil moisture sensor (5) is located on one side of the crop root, and the soil moisture sensor (5) is connected to a controller.

6. The intelligent water-saving and energy-saving vegetable greenhouse according to claim 5 is characterized by: The invention also includes a solar panel (4), wherein the horizontal angle of the solar panel (4) is 70 degrees, and the solar panel (4) is respectively connected to the controller, the water pump (6), the electric push rod, the soil moisture sensor (5), the temperature and humidity sensor, the heater (8), the humidifier (7), and the blower (9).

7. The intelligent water-saving and energy-saving vegetable greenhouse according to claim 1 is characterized by: A sloped roof structure (19) is provided between two adjacent rain guide grooves (16).

8. The intelligent water-saving and energy-saving vegetable greenhouse according to claim 1 is characterized by: The rain guide trough (16) is connected to the filter chamber (12) via a first rain guide pipe (17), and the water storage tank (2) is connected to the filter chamber (12) via a second rain guide pipe (18); A filter cartridge (15) is provided in the filter cavity (12), the outer shape of the filter cartridge (15) matches the shape of the inner wall of the filter cavity (12), the portion of the filter cartridge (15) corresponding to the first rain guide pipe (17) is a through opening (151), and the portions of the filter cartridge (15) corresponding to the water collection port (25) and the second rain guide pipe (18) are respectively provided with a plurality of filter mesh holes (152).

9. The intelligent water-saving and energy-saving vegetable greenhouse according to claim 1 is characterized in that: Also included is a capacity design method for a water storage tank (2) based on an analytical probabilistic hydrological model, the design method comprising the following steps: S1. Based on the historical long-series hourly rainfall data and the rainfall event division method, the rainfall data of the study area were statistically analyzed to obtain the three rainfall characteristics v, u and b, and the exponential distribution parameters and exponential distribution functions of the three characteristics were determined. The exponential distribution parameters corresponding to v, u and b are , and , the exponential distribution functions corresponding to v, u and b are , and ; Where v is the rainfall amount, u is the rainfall duration, b is the rainfall interval, and is the symbol of the average operator; S2. Calculate the runoff v generated by the roof r , the mathematical equation expression is: Where, v ff is the initial flushing rainwater volume, which is the runoff part with a high degree of pollution. When the rainwater is collected, it is processed through the initial rainwater discharge device (3). φ is the comprehensive runoff coefficient; S4. Based on the derived probability distribution theory, the runoff generated by the roof is calculated as v r The probability distribution function (CDF) when , the mathematical expression of the probability distribution function is: ； S5. Derivate the probability distribution function to obtain the runoff generated by the roof as v r The probability density function (PDF) when , the mathematical expression of the probability density function is: ； S6. Derived from the probability density function, the expected value E(vr) of the runoff vr generated by the roof is obtained, and the average rainwater collection volume v of the water storage tank (2) over many years is calculated. h , v h The calculation formula is: Where, , , G is the average daily irrigation water required for vegetables in the vegetable greenhouse (22) during the dry period without rain, p is the overflow of the water storage tank (2), A is the plane projection area of ​​the roof of the vegetable greenhouse (22), θ is the average number of rainfall events over many years, and E(p) is the expected value of the overflow; S7. Calculate the irrigation guarantee rate R of vegetables in greenhouse (22) during rainless drought period e , R e The calculation formula is: ； S8. Calculate the irrigation guarantee rate R e The volume B of the water tank (2) under the conditions is calculated as follows: 。

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