Precise water and fertilizer irrigation device and method

Abstract

The invention provides a precise water and fertilizer irrigation device, which comprises a plurality of fertilizer cabins configured according to component types of a fertilizer formula, and each fertilizer cabin is provided with a measuring device; the water-fertilizer barrel is used for mixing water and fertilizer; the water inlet pipe is used for draining and shunting water and fertilizer; the plant substrate is used for cultivating plants; the tail water pipe is used for receiving and converging tail water; the tail water treatment and circulation device is used for draining compliant tail water to the water and fertilizer barrel; the control system is configured to control the current feeding amount of the fertilizer bin to be consistent with the theoretical feeding amount or the current feeding amount to be consistent with the minimum feeding amount until the PH value and the EC value of the water fertilizer meet the standard range. According to the precise water and fertilizer irrigation device, on the basis of tail water circulation, automatic precise configuration of a fertilizer formula is achieved, the irrigation flow is precisely controlled on the basis of the temperature and humidity of a plant substrate, plants can obtain water and fertilizer irrigation at any time according to the optimal irrigation scheme, the irrigation cost is reduced, and the irrigation efficiency is improved. And the fertilizer absorption efficiency and effect of plants are also improved.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural intelligent equipment, and in particular to a precise water and fertilizer irrigation device and method. Background Art

[0002] Potted soilless substrate cultivation is a common cultivation method nowadays. Although it has the advantages of saving water, fertilizer, high yield and getting rid of the limitations of the soil environment, since the substrate contains almost no nutrients needed for plant growth, substrate cultivation often requires watering with nutrient solution or water-fertilizer to provide crops with the water and nutrients they need for growth.

[0003] Some of the earliest irrigation devices used for substrate cultivation provided water and nutrients to crops by watering the potted plants individually. However, under this scheme, soilless substrate cultivation in potted plants would produce a large amount of fertilizer tail water, resulting in a waste of water resources and residual fertilizer.

[0004] There are also some solutions in the prior art that use fertilizer tail water for circulating irrigation. The generated fertilizer tail water is collected and added back to the water fertilizer to form a cycle. However, these solutions only focus on the recycling of tail water and ignore the control of the feeding process. This results in the inability of these solutions to achieve highly automated feeding and high-precision feeding amount control under different crops and fertilizer formulas, which can easily cause the water fertilizer fertility to be inconsistent with the fertility required by the plant, or cause the HP value and EC value of the water fertilizer to be too low, affecting the growth of the plant. At the same time, this solution also lacks research and processing on the correlation between irrigation flow and plant temperature and humidity parameters, which results in the plant often being unable to obtain the irrigation plan that is most suitable for the current environment, which not only easily affects the growth of the plant, but also easily causes waste of water and fertilizer. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in order to solve the problem that the irrigation device in the prior art cannot automatically and accurately feed the materials and the influence of plant temperature and humidity on the plants, the present invention provides a precise water and fertilizer irrigation device and method to solve the above problems.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a precise water and fertilizer irrigation device, comprising:

[0007] A fertilizer bin, which is configured in multiples according to the types of components of the fertilizer formula for the plant, and is used to store and release fertilizers, and each of the fertilizer bins is provided with a weighing device for detecting the amount of the components;

[0008] A water-fertilizer bucket, which is provided with an agitator, a water-fertilizer pH value sensor, and a water-fertilizer EC value sensor, and is used to receive fertilizer and mix the fertilizer with stirring water to form water-fertilizer;

[0009] The water inlet pipe is used to guide water and fertilizer and distribute them to various plants;

[0010] A plant substrate, used for growing the plant, and provided with a substrate temperature sensor and a substrate humidity sensor;

[0011] The tailwater pipe is used to receive and converge the tailwater from the plant matrix seepage;

[0012] A tailwater treatment and circulation device, connected to the tailwater pipe, for receiving and treating the tailwater from the tailwater pipe, including a circulation pipe for diverting compliant tailwater to the water fertilizer tank;

[0013] A control system is connected to a water and fertilizer pH value sensor, a water and fertilizer EC value sensor, a substrate temperature sensor, and a substrate humidity sensor;

[0014] The control system is connected to the fertilizer bin and the weighing device, and is configured to determine the components, the theoretical feeding amount and the minimum feeding amount of each component according to the fertilizer formula; is also configured to control the fertilizer bin corresponding to each component to release the fertilizer; is also configured to control the fertilizer bin to stop discharging when the weighing device determines that the current feeding amount is consistent with the theoretical feeding amount or the current feeding amount is consistent with the minimum feeding amount, and the weighing device includes a weight sensor and a volume sensor;

[0015] The control system is further configured to obtain the pH value and EC value of the water and fertilizer through the water and fertilizer pH value sensor and the water and fertilizer EC value sensor and determine whether the pH value and EC value of the water and fertilizer are within a preset standard range; and is further configured to control the operation of the agitator;

[0016] The control system is further configured to calculate the irrigation flow of the water inlet pipe according to the real-time temperature and real-time humidity of the plant substrate, and is further configured to control the irrigation flow of the water inlet pipe.

[0017] Preferably, the water inlet pipe includes a water inlet main pipe and a plurality of water inlet branch pipes, the head end of the water inlet main pipe is connected to the water fertilizer barrel, the end of the water inlet main pipe is connected to the head ends of a plurality of water inlet branch pipes, the irrigation flow of the water inlet pipe is the end flow of the water inlet main pipe, and a plurality of pressure-equalizing drip arrows are arranged at the end of each of the water inlet branch pipes, and each of the pressure-equalizing drip arrows is arranged above the plant;

[0018] The water inlet main pipe is provided with a water inlet main pipe solenoid valve for controlling the flow in the pipe and a water inlet main pipe flow sensor for detecting the flow at the end of the water inlet main pipe. The control system is further configured to control the flow of the water inlet main pipe through the water inlet main pipe solenoid valve. The control system is further configured to obtain the flow of the water inlet main pipe through the water inlet main pipe flow sensor.

[0019] Each of the water inlet branch pipes is provided with a branch flow sensor, a branch pH value sensor and a branch EC value sensor connected to the control system; the control system is also configured to obtain and record branch data of each water inlet branch pipe through the branch flow sensor, the branch pH value sensor and the branch EC value sensor, and the branch data includes the branch flow, the branch pH value and the branch EC value of each water inlet branch pipe;

[0020] The control system is further configured to select the same branch data in at least one time period to perform a year-on-year analysis of the water inlet branch within multiple time spans; the control system is further configured to select the same branch data of different water inlet branches in at least one time period to perform a year-on-year analysis of the water inlet branch within the same time span; the time span includes daily, weekly and monthly;

[0021] The control system is also configured to issue a warning when the result of the year-on-year analysis of the water inlet branch pipe is abnormal.

[0022] Preferably, the system further comprises a clean water main pipe connected to the water inlet main pipe, the clean water main pipe is used to inject clean water into the water inlet main pipe, the clean water main pipe is provided with a clean water main pipe solenoid valve, and the control system is further configured to control the working mode of the clean water main pipe to switch between a default non-flushing operation mode and a flushing operation mode according to the opening size of the clean water main pipe solenoid valve;

[0023] A matrix EC value sensor and a matrix pH value sensor are also provided in the plant matrix, a quality sensor is also provided below the plant matrix, and the control system is further configured to obtain the matrix EC value, matrix pH value and plant quality through the matrix EC value sensor, the matrix pH value sensor and the quality sensor respectively;

[0024] The control system is further configured to determine whether the matrix EC value exceeds a preset matrix EC threshold;

[0025] The control system is further configured to randomly select plant data of at least one plant in at least one time period for year-on-year analysis within multiple rounds of time spans, wherein the plant data includes real-time temperature of the plant substrate, real-time humidity of the plant substrate, EC value of the substrate, pH value of the substrate, and plant quality;

[0026] The control system is also configured to issue a warning when the results of the year-on-year analysis of the plant data are abnormal.

[0027] Preferably, the tail water treatment and circulation device further comprises a filtering unit, an ultraviolet lamp, a tail water turbidity sensor, a tail water ammonia nitrogen value sensor and a waste water discharge pipe, and the tail water treatment and circulation device discharges non-compliant waste water through the waste water discharge pipe;

[0028] The control system is also configured to obtain tail water turbidity and tail water ammonia nitrogen value through a tail water turbidity sensor and a tail water ammonia nitrogen value sensor connected thereto, and the control system is also configured to determine whether the tail water is compliant based on the tail water turbidity and the tail water ammonia nitrogen value.

[0029] Preferably, the tailwater pipe comprises a plurality of tailwater branch pipes and a tailwater main pipe;

[0030] The tailwater branch pipe is arranged below the plant matrix to receive the tailwater seeping from the plant matrix, and the ends of the tailwater branch pipe are connected to the tailwater main pipe;

[0031] The end of the tailwater main pipe is connected to the tailwater treatment and circulation device, and a tailwater flow sensor is provided on the tailwater main pipe. The control system is also configured to obtain the flow at the end of the tailwater main pipe through the tailwater flow sensor connected thereto; the control system is also configured to determine whether the difference between the flow at the end of the tailwater main pipe and the flow at the end of the inlet main pipe is normal, and the control system is also configured to issue a warning when the difference between the flow at the end of the main pipe and the flow at the end of the inlet main pipe is abnormal.

[0032] Based on the above-mentioned precise water and fertilizer irrigation device, the present invention also discloses a precise water and fertilizer irrigation method, comprising the following steps:

[0033] S1. The fertilizer bin drops materials into the water fertilizer barrel, and the water fertilizer barrel mixes the fertilizer and stirring water into water fertilizer, which flows out through the water inlet pipe. Specifically, the following steps are included:

[0034] S101, the control system obtains and analyzes the fertilizer formula of the current plant, determines the components of the fertilizer formula and the theoretical feeding amount of each component, and sends feeding instructions to the fertilizer bins corresponding to each component;

[0035] S102, the control system obtains the amount of fertilizer in the fertilizer bin in real time through the measuring device and calculates the current feeding amount until the current feeding amount is consistent with the theoretical feeding amount, and the control system controls the fertilizer bin to stop feeding;

[0036] S103, the control system controls the stirring pump to mix the fertilizer and stirring water into water-fertilizer;

[0037] S104, the control system obtains the pH value and EC value of the water and fertilizer, and determines whether the pH value and EC value of the water and fertilizer are within the standard range; if not, it goes to step S105; otherwise, it goes to step S2.

[0038] S105, the control system determines the minimum feeding amount of the components according to the fertilizer formula, and sends feeding instructions to the fertilizer bins corresponding to each component;

[0039] S106, the control system obtains the amount of fertilizer in the fertilizer bin in real time through the measuring device and calculates the current feeding amount until the current feeding amount is consistent with the minimum feeding amount, and the control system controls the fertilizer bin to stop feeding;

[0040] S2, the control system obtains the real-time temperature t1 and real-time humidity h1 of the plant substrate, and adjusts the irrigation flow of the water inlet pipe to x1 according to the following formula:

[0041]

[0042] in:

[0043] t0 is the base temperature of the plant substrate;

[0044] t1 is the real-time temperature of the plant substrate;

[0045] A0 is the irrigation flow required by the plant when the base temperature is t0;

[0046] n is the number of times the plant needs to be irrigated per day;

[0047] x0 is the irrigation flow required by the plant when the real-time temperature is t1;

[0048] h0 is the base humidity of the plant substrate;

[0049] h1 is the real-time humidity of the plant substrate;

[0050] x1 is the irrigation flow required by the plant when the real-time temperature is t1 and the real-time humidity is h1;

[0051] S3, the tailwater pipe receives and converges the tailwater under the plant matrix seepage to the tailwater treatment and circulation device;

[0052] S4. After the tail water is treated by the tail water treatment and circulation device, the compliant tail water will be drained into the water fertilizer barrel to become stirring water.

[0053] Preferably, the water inlet pipe comprises a water inlet main pipe and a plurality of water inlet branch pipes;

[0054] In step S2, the step of adjusting the irrigation flow of the water inlet pipe includes: the control system controls the opening of the solenoid valve on the water inlet pipe and obtains the end flow of the water inlet pipe in real time until the end flow of the water inlet pipe is consistent with the calculated irrigation flow x1 of the water inlet pipe, and the control system stops adjusting the solenoid valve.

[0055] Preferably, the step S2 and S3 further include the following steps:

[0056] S21, the control system obtains the EC value of the plant matrix and determines whether it exceeds the matrix EC threshold, if not, proceeds to step S3; if exceeded, proceeds to step S22;

[0057] S22, the control system switches the working mode of the clean water main to the flushing operation mode;

[0058] S23, the control system calculates the irrigation flow x2 of the water inlet main according to the following formula:

[0059] x2≥m*w0;

[0060] Where:

[0061] m is the number of plants;

[0062] w0 is the minimum flow rate required for each plant to be flushed;

[0063] S24, the control system reduces the opening of the water inlet main solenoid valve and increases the opening of the clean water main solenoid valve, so that the flow rate at the end of the water inlet main is not less than the calculated irrigation flow rate x2 of the water inlet main, and enters step S21.

[0064] Preferably, step S4 specifically includes the following steps:

[0065] S401, the filtration unit filters the tail water;

[0066] S402, the control system controls the ultraviolet lamp to sterilize the tail water;

[0067] S403, the control system obtains the tail water turbidity and tail water ammonia nitrogen value and determines whether the two are within a reasonable range, if not, proceeds to step S404, otherwise proceeds to step S405;

[0068] S404, the control system determines that the tail water is waste water, and the tail water treatment and circulation device discharges the waste water through the waste water discharge pipe;

[0069] S405. The control system determines that the tail water is compliant tail water, and the tail water treatment and circulation device diverts the compliant tail water to the water fertilizer barrel through the circulation pipe as stirring water.

[0070] Preferably, the tailwater pipe comprises a plurality of tailwater branch pipes and a tailwater main pipe;

[0071] Step S3 specifically includes the following steps:

[0072] S301, the tailwater branch pipe receives the tailwater from the plant matrix seepage and converges it to the tailwater main pipe;

[0073] S302, the tailwater main pipe drains the tailwater to the tailwater treatment and circulation device, and at the same time the control system obtains the end flow of the tailwater main pipe and the end flow of the water inlet main pipe and determines whether the difference between the two is normal. If it is abnormal, the control system issues a warning.

[0074] The beneficial effect of the present invention is that this precise water and fertilizer irrigation device realizes the automatic and precise configuration of fertilizer formula on the basis of tail water circulation, and also accurately controls the irrigation flow based on the temperature and humidity of the plant matrix, so that plants can obtain water and fertilizer irrigation with the best irrigation plan at any time, which not only reduces the irrigation cost but also improves the efficiency and effect of plant fertilizer absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0076] Figure 1 It is a structural schematic diagram of a precise water and fertilizer irrigation device of the present invention.

[0077] Figure 2 It is a flow chart of the ingredient mixing process of a precise water and fertilizer irrigation method of the present invention.

[0078] Figure 3 The present invention is a flow chart of a precise water and fertilizer irrigation method.

[0079] Among them: 1. Control system, 2. Fertilizer bin, 3. Water-fertilizer barrel, 4. Water inlet main pipe, 5. Water inlet branch pipe, 6. Clean water main pipe, 7. Tail water branch pipe, 8. Tail water main pipe, 9. Tail water treatment and circulation device. DETAILED DESCRIPTION

[0080] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0081] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0082] In addition, the terms "first", "second", etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0083] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0084] The physical structure of this cloud server includes a CPU, ROM, RAM, keyboard, mouse, display, network interface and USB interface. The CPU is electrically connected to the ROM, RAM, keyboard, mouse, display, network interface and USB interface. The ROM stores various data in the cloud database, various data in the content selection library, computer programs for controlling the cloud server, various settings, initial values, etc. The RAM is used as a working area for loading various computer programs or a storage area for temporarily storing identification numbers.

[0085] like Figure 1 As shown, the present invention discloses an embodiment of a precision water and fertilizer irrigation device, comprising:

[0086] The fertilizer bin 2 is used to store and release fertilizers. In this embodiment, each plant corresponds to at least one fertilizer formula, and each fertilizer formula includes at least one component and its theoretical dosage. The fertilizer bin is provided with a fertilizer bin 2 corresponding to the number of components in the ingredient formula of the plant, and each fertilizer bin 2 is provided with a measuring device capable of measuring the number of components in the fertilizer bin 2 according to the category of the specific component.

[0087] The specific components include components in solid form and components in liquid form. The weighing device includes a weight sensor capable of weighing the solid components and a liquid sensor capable of measuring the volume of the liquid. The feeding device, weight sensor and volume sensor of the fertilizer bin 2 are all connected to the control system 1.

[0088] The feeding device can start and end feeding according to the instructions of the control system 1. The control system 1 can obtain the components and theoretical feeding amount according to the fertilizer formula, and determine the minimum feeding amount of the fertilizer formula according to a preset percentage value, for example, 2% of the theoretical feeding amount is used as the minimum feeding amount, and the percentage value of the minimum feeding amount is adjusted according to the actual situation.

[0089] The control system 1 determines the current feeding amount of the corresponding fertilizer bin 2 according to the weight sensor or volume sensor, and controls the fertilizer bin 2 to stop discharging when the current feeding amount is consistent with the theoretical feeding amount or the current feeding amount is consistent with the minimum feeding amount. The theoretical feeding amount is the amount of fertilizer that needs to be put into the fertilizer bin 2 of the corresponding component when the water and fertilizer are initially configured, and the minimum feeding amount is the amount of fertilizer that needs to be put into the fertilizer bin 2 of the corresponding component each time when the EC value and PH value of the water and fertilizer are not in compliance and need to be re-fed.

[0090] At the same time, the control system 1 can also determine the frequency and time of fertilization according to the current plants, and then determine when to control the feeding device of the fertilizer bin 2 to feed.

[0091] The water-fertilizer bucket 3 is used to receive fertilizers and mix the fertilizers with stirring water to form water-fertilizer. In the present embodiment, the water-fertilizer bucket 3 is provided with an agitator, a water-fertilizer pH value sensor, a water-fertilizer EC value sensor, and a liquid level sensor, all of which are connected to the control system 1. The agitator can mix the fertilizers and stirring water in the water-fertilizer bucket 3 into water-fertilizer. The control system 1 can obtain the pH value, EC value, and volume of water-fertilizer in the water-fertilizer bucket 3 according to the water-fertilizer pH value sensor, the water-fertilizer EC value sensor, and the liquid level sensor. The control system 1 can determine whether the fertility of the current water-fertilizer meets the needs of the plants by judging whether the pH value and EC value of the water-fertilizer are within the preset standard range. The volume of water-fertilizer can help the control system 1 determine whether the current amount of water-fertilizer meets the needs of the plants.

[0092] The water inlet pipe is used to drain water and fertilizer and distribute the water and fertilizer to each plant. Specifically, the water inlet pipe includes a water inlet main pipe 4 and a plurality of water inlet branch pipes 5. The head end of the water inlet main pipe 4 is connected to the water and fertilizer barrel 3, and the end of the water inlet main pipe 4 is connected to the head ends of the plurality of water inlet branch pipes 5. The irrigation flow of the water inlet pipe is the flow at the end of the water inlet main pipe 4. A plurality of equalizing pressure drip arrows are arranged at the end of each water inlet branch pipe 5, and each equalizing pressure drip arrow is arranged above the plant.

[0093] The water inlet pipe 4 is provided with a water inlet pipe solenoid valve for controlling the flow in the pipe and a water inlet pipe flow sensor for detecting the flow at the end of the water inlet pipe 4. The control system 1 can control the flow of the water inlet pipe 4 through the water inlet pipe solenoid valve and obtain the flow of the water inlet pipe 4 through the water inlet pipe flow sensor. The water inlet pipe 4 is also provided with a water inlet pipe pH value sensor and a water inlet pipe EC value sensor both connected to the control system 1, so that the control system 1 can obtain the pH value of the water inlet pipe 4 and the EC value of the water inlet pipe 4.

[0094] Based on the end flow of the water inlet pipe 4, the pH value of the water inlet pipe 4 and the EC value of the water inlet pipe 4, the control system 1 can also perform a year-on-year analysis of the water inlet pipe and issue a warning when the data is abnormal. Specifically,

[0095] Daily data year-on-year analysis: select several time periods within the day to record the end flow of water inlet pipe 4, the pH value of water inlet pipe 4 and the EC value of water inlet pipe 4, and conduct significance analysis with the data of the same time period yesterday. When the compared data has significant difference, alarm information including SMS, email and voice reminder will be issued.

[0096] Weekly data year-on-year analysis: select several time periods within this week to record the data of the end flow of water inlet pipe 4, the pH value of water inlet pipe 4 and the EC value of water inlet pipe 4, and conduct significance analysis with the data of the same time period last week. When the compared data has significant difference, alarm information including SMS, email and voice reminder will be issued.

[0097] Monthly data year-on-year analysis: select several time periods within this week to record the data of the end flow of water inlet pipe 4, the pH value of water inlet pipe 4 and the EC value of water inlet pipe 4, and conduct significance analysis with the data of the same time period last week. When the compared data has significant difference, alarm information including SMS, email and voice reminder will be issued.

[0098] In other embodiments, each water inlet branch pipe 5 is provided with a branch flow sensor, a branch pH value sensor and a branch EC value sensor connected to the control system 1; the control system 1 can also obtain and record the branch data of each water inlet branch pipe 5 through the branch flow sensor, the branch pH value sensor and the branch EC value sensor, and the branch data includes the branch flow, the branch pH value and the branch EC value of each water inlet branch pipe 5;

[0099] The control system 1 can also select the same branch data within at least one time period to perform year-on-year analysis on the water inlet branch within multiple time spans; the control system 1 can also select the same branch data of different water inlet branches 5 within at least one time period to perform year-on-year analysis on the water inlet branch within the same time span; the time span includes daily, weekly and monthly; the control system 1 can also issue a warning when the results of the year-on-year analysis of the water inlet branch are abnormal.

[0100] The specific contents of the year-on-year analysis of the water inlet branch pipes within multiple time spans include:

[0101] Daily year-on-year analysis: select several time periods within the day to record branch flow, branch pH value and branch EC value data, and conduct significance analysis with the data of the same time period yesterday. When the compared data has significant difference, alarm information including SMS, email and voice reminder will be issued.

[0102] Weekly data year-on-year analysis: select several time periods within this week to record branch flow, branch pH value and branch EC value data, and conduct significance analysis with the data of the same time period last week. When the compared data has significant differences, alarm information including SMS, email and voice reminder will be issued.

[0103] Monthly data year-on-year analysis: select several time periods within this week to record branch flow, branch pH value and branch EC value data, and conduct significance analysis with the data of the same time period last week. When the compared data has significant differences, alarm information including SMS, email and voice reminder will be issued.

[0104] The specific contents of the year-on-year analysis of the water inlet branch pipes within the same time span include:

[0105] Daily data analogy analysis: The branch flow, branch pH value and branch EC value recorded daily by different water inlet branches are analyzed for significance. When the comparison data has significant difference, alarm information including SMS, email and voice reminder is issued.

[0106] Weekly data analogy analysis: The branch flow, branch pH value and branch EC value recorded daily by different water inlet branches are analyzed for significance. When the comparison data has significant difference, alarm information including SMS, email and voice reminder is issued.

[0107] Monthly data analogy analysis: The branch flow, branch pH value and branch EC value recorded daily by different water inlet branches are analyzed for significance. When the comparison data has significant difference, alarm information including SMS, email and voice reminder is issued.

[0108] The plant substrate is used for cultivating plants and is provided with a substrate temperature sensor and a substrate humidity sensor both connected to the control system 1. The control system 1 can calculate the irrigation flow of the water inlet pipe according to the real-time temperature and real-time humidity of the plant substrate.

[0109] In this embodiment, the root system of the plant is planted in a plant matrix, and the plant matrix is ​​arranged in a cultivation pot with a hollow bottom. In another embodiment, a waterproof weight sensor is also arranged at the bottom of the cultivation pot, and the weight sensor is connected to the control system 1, so that the control system 1 can obtain the quality data of the plant, which is convenient for the control system 1 to analyze the corresponding data later and issue a warning when the data is abnormal.

[0110] In another embodiment, a matrix EC value sensor and a matrix pH value sensor are also provided in the plant matrix, and a quality sensor is also provided below the plant matrix. The control system 1 can also obtain the matrix EC value, matrix pH value and plant quality through the matrix EC value sensor, the matrix pH value sensor and the quality sensor respectively.

[0111] The control system 1 is also configured to randomly select plant data of at least one plant in at least one time period for year-on-year analysis within multiple rounds of time spans, and the plant data includes the real-time temperature of the plant substrate, the real-time humidity of the plant substrate, the EC value of the substrate, the pH value of the substrate, and the plant quality. The control system 1 can also issue a warning when the result of the year-on-year analysis of the plant data is abnormal.

[0112] In addition, the control system 1 can also determine whether the matrix EC value exceeds a preset matrix EC threshold.

[0113] At the same time, this precise water and fertilizer irrigation device also includes a clean water main pipe 6 connected to the water inlet main pipe 4, and the clean water main pipe 6 is used to inject clean water into the water inlet main pipe 4. A clean water main pipe solenoid valve is provided on the clean water main pipe 6. The control system 1 can also control the working mode of the clean water main pipe 6 to switch between the default non-flushing operation mode and the flushing operation mode through the opening size of the clean water main pipe solenoid valve. In the non-flushing operation mode, the flow value of the tail water main pipe 8 = the number of plants * the minimum discharge volume of the non-flushing irrigation benchmark for each pot of plants. The minimum discharge volume of the non-flushing irrigation benchmark refers to: the tail water seepage flow rate of the plant when the EC value of the plant matrix of each pot is maintained not lower than the normal range.

[0114] The tailwater pipe comprises a plurality of tailwater branch pipes 7 and a tailwater main pipe 8.

[0115] The tail water branch pipe 7 is arranged below the plant matrix to receive the tail water seeping down from the plant matrix. The ends of the tail water branch pipe 7 are connected to the tail water main pipe 8 .

[0116] The end of the tailwater main pipe 8 is connected to the tailwater treatment and circulation device 9. The tailwater main pipe 8 is provided with a tailwater flow sensor connected to the control system 1. The control system 1 can obtain the flow at the end of the tailwater main pipe 8 through the tailwater flow sensor. The control system 1 can also determine whether the difference between the flow at the end of the tailwater main pipe 8 and the flow at the end of the inlet main pipe 4 is normal, and can issue a warning when the difference between the flow at the end of the main pipe and the flow at the end of the inlet main pipe 4 is abnormal.

[0117] In other embodiments, the tailwater main pipe 8 is also provided with a tailwater main pipe pH value sensor and a tailwater main pipe EC value sensor, both of which are connected to the control system 1, so that the control system 1 can obtain the pH value and EC value of the water fertilizer in the tailwater main pipe 8, which facilitates the control system 1 to subsequently analyze the corresponding data.

[0118] The tail water treatment and circulation device 9 includes a filter unit, an ultraviolet lamp, a tail water turbidity sensor, a tail water ammonia nitrogen value sensor, a circulation pipe and a waste water discharge pipe. The filter unit is a structure with a filtering and adsorption function such as a multi-layer filter paper and activated carbon, which can filter turbidity in the tail water. The ultraviolet lamp can sterilize the tail water.

[0119] The control system 1 can obtain the tail water turbidity and the tail water ammonia nitrogen value through the tail water turbidity sensor and the tail water ammonia nitrogen value sensor connected thereto, and then determine whether the tail water is compliant based on the tail water turbidity and the tail water ammonia nitrogen value.

[0120] After the control system 1 makes a judgment, the tail water treatment and circulation device 9 can use the circulation pipe to transfer the tail water to the water fertilizer barrel 3 when the tail water is compliant, and discharge the non-compliant wastewater through the wastewater discharge pipe when the tail water is non-compliant.

[0121] The control system 1 is a device or cloud platform capable of receiving, processing and analyzing data, and is connected to multiple sensors in the device and other controllable devices. The control system 1 can also perform year-on-year and analog comparison and analysis of relevant data, and can issue warnings to users when corresponding data show obvious abnormalities.

[0122] Based on the above-mentioned embodiment of a precise water and fertilizer irrigation device, the present invention also discloses a precise water and fertilizer irrigation method, such as Figures 2-3 As shown, the following steps are included:

[0123] S1. The fertilizer bin drops materials into the water fertilizer barrel. The water fertilizer barrel mixes the fertilizer and stirring water into water fertilizer, which flows out through the water inlet pipe to complete the batching process, which specifically includes the following steps:

[0124] S101, the control system obtains and analyzes the fertilizer formula of the current plant, determines the components of the fertilizer formula and the theoretical feeding amount of each component, and sends feeding instructions to the fertilizer bins corresponding to each component;

[0125] S102, the control system obtains the amount of fertilizer in the fertilizer bin in real time through the measuring device and calculates the current feeding amount until the current feeding amount is consistent with the theoretical feeding amount, and the control system controls the fertilizer bin to stop feeding;

[0126] S103, the control system controls the stirring pump to mix the fertilizer and stirring water into water-fertilizer;

[0127] S104, the control system obtains the pH value and EC value of the water and fertilizer, and determines whether the pH value and EC value of the water and fertilizer are within the standard range; if not, it goes to step S105; otherwise, it goes to step S2.

[0128] S105, the control system determines the minimum feeding amount of the components according to the fertilizer formula, and sends feeding instructions to the fertilizer bins corresponding to each component;

[0129] S106, the control system obtains the amount of fertilizer in the fertilizer bin in real time through the measuring device and calculates the current feeding amount until the current feeding amount is consistent with the minimum feeding amount, and the control system controls the fertilizer bin to stop feeding;

[0130] S2, the control system obtains the real-time temperature t1 and real-time humidity h1 of the plant substrate, and adjusts the irrigation flow of the water inlet pipe to x1 according to the following formula:

[0131]

[0132] in:

[0133] t0 is the base temperature of the plant substrate;

[0134] t1 is the real-time temperature of the plant substrate;

[0135] A0 is the irrigation flow required by the plant when the base temperature is t0;

[0136] n is the number of times the plant needs to be irrigated per day;

[0137] x0 is the irrigation flow required by the plant when the real-time temperature is t1;

[0138] h0 is the base humidity of the plant substrate;

[0139] h1 is the real-time humidity of the plant substrate;

[0140] x1 is the irrigation flow required by the plant when the real-time temperature is t1 and the real-time humidity is h1;

[0141] Specifically, the control system adjusts the irrigation flow of the water inlet pipe through the following steps: the control system controls the opening of the solenoid valve on the water inlet pipe and obtains the flow at the end of the water inlet pipe in real time until the flow at the end of the water inlet pipe is consistent with the calculated irrigation flow x1 of the water inlet pipe, and the control system stops adjusting the solenoid valve;

[0142] In another embodiment, the steps S2 and S3 further include the following steps:

[0143] S21, the control system obtains the EC value of the plant matrix and determines whether it exceeds the matrix EC threshold, if not, proceeds to step S3; if exceeded, proceeds to step S22;

[0144] S22, the control system switches the working mode of the clean water main to the flushing operation mode;

[0145] S23, the control system calculates the irrigation flow x2 of the water inlet pipe according to the following formula:

[0146] x2≥m*w0;

[0147] Where:

[0148] m is the number of plants;

[0149] w0 is the minimum flow rate required for each plant to be flushed;

[0150] S24, the control system reduces the opening of the water inlet main solenoid valve and increases the opening of the clean water main solenoid valve, so that the flow rate at the end of the water inlet main is not less than the calculated irrigation flow rate x2 of the water inlet pipe, and enters step S21.

[0151] In this embodiment, the substrate EC threshold is the maximum value that the plants can withstand. Continuously allowing crops to grow in a substrate that exceeds the substrate EC threshold is likely to have an adverse effect on the plants. At this time, it is necessary to let the control system switch the working mode of the clean water main to the flushing operation mode, and at the same time lower the opening of the water inlet main solenoid valve so that the pressure-equalizing drip arrow can have enough water to flush the plant substrate, and at the same time dilute the fertility of the water used to flush the plant substrate, so as to avoid the situation where the fertility of the substrate remains unchanged after continuous flushing.

[0152] S4, the tailwater pipe receives and converges the tailwater under the plant matrix seepage to the tailwater treatment and circulation device, specifically including the following steps:

[0153] S401, the tailwater branch pipe receives the tailwater from the plant matrix seepage and converges it to the tailwater main pipe;

[0154] S402, the tailwater main pipe diverts the tailwater to the tailwater treatment and circulation device, and at the same time the control system obtains the flow rate at the end of the tailwater main pipe and the flow rate at the end of the inlet main pipe and determines whether the difference between the two is normal. If it is not normal, the control system issues a warning;

[0155] S5. After the tail water is treated by the tail water treatment and circulation device, the compliant tail water is diverted to the water fertilizer tank to become stirring water, which specifically includes the following steps:

[0156] S501, the filtration unit filters the tail water;

[0157] S502, the control system controls the ultraviolet lamp to sterilize the tail water;

[0158] S503, the control system obtains the tail water turbidity and tail water ammonia nitrogen value and determines whether the two are within a reasonable range, if not, proceeds to step S504, otherwise proceeds to step S505;

[0159] S504, the control system determines that the tail water is waste water, and the tail water treatment and circulation device discharges the waste water through the waste water discharge pipe;

[0160] S505. The control system determines that the tail water is compliant tail water, and the tail water treatment and circulation device diverts the compliant tail water to the water fertilizer barrel through the circulation pipe as stirring water.

[0161] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0162] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A precision water and fertilizer irrigation device, characterized in that: include: A fertilizer bin, which is configured in multiples according to the types of components of the fertilizer formula for the plant, and is used to store and release fertilizers, and each of the fertilizer bins is provided with a weighing device for detecting the amount of the components; A water-fertilizer bucket, which is provided with an agitator, a water-fertilizer pH value sensor, and a water-fertilizer EC value sensor, and is used to receive fertilizer and mix the fertilizer with stirring water to form water-fertilizer; The water inlet pipe is used to guide water and fertilizer and distribute them to various plants; A plant substrate, used for growing the plant, and provided with a substrate temperature sensor and a substrate humidity sensor; The tailwater pipe is used to receive and converge the tailwater from the plant matrix seepage; A tailwater treatment and circulation device, connected to the tailwater pipe, for receiving and treating the tailwater from the tailwater pipe, including a circulation pipe for diverting compliant tailwater to the water fertilizer tank; A control system is connected to a water and fertilizer pH value sensor, a water and fertilizer EC value sensor, a substrate temperature sensor, and a substrate humidity sensor; The control system is connected to the fertilizer bin and the weighing device, and is configured to determine the components, the theoretical feeding amount and the minimum feeding amount of each component according to the fertilizer formula; is also configured to control the fertilizer bin corresponding to each component to release the fertilizer; is also configured to control the fertilizer bin to stop discharging when the weighing device determines that the current feeding amount is consistent with the theoretical feeding amount or the current feeding amount is consistent with the minimum feeding amount, and the weighing device includes a weight sensor and a volume sensor; The control system is further configured to obtain the pH value and EC value of the water and fertilizer through the water and fertilizer pH value sensor and the water and fertilizer EC value sensor and determine whether the pH value and EC value of the water and fertilizer are within a preset standard range; and is further configured to control the operation of the agitator; The control system is further configured to calculate the irrigation flow of the water inlet pipe according to the real-time temperature and real-time humidity of the plant substrate, and is further configured to control the irrigation flow of the water inlet pipe.

2. A precise water and fertilizer irrigation device as claimed in claim 1, characterized in that: The water inlet pipe includes a water inlet main pipe and a plurality of water inlet branch pipes. The head end of the water inlet main pipe is connected to the water fertilizer barrel, and the end of the water inlet main pipe is connected to the head ends of the plurality of water inlet branch pipes. The irrigation flow of the water inlet pipe is the flow at the end of the water inlet main pipe. The end of each of the water inlet branch pipes is provided with a plurality of pressure-equalizing drip arrows, and each of the pressure-equalizing drip arrows is provided above the plants. The water inlet main pipe is provided with a water inlet main pipe solenoid valve for controlling the flow in the pipe and a water inlet main pipe flow sensor for detecting the flow at the end of the water inlet main pipe. The control system is further configured to control the flow of the water inlet main pipe through the water inlet main pipe solenoid valve. The control system is further configured to obtain the flow of the water inlet main pipe through the water inlet main pipe flow sensor. Each of the water inlet branch pipes is provided with a branch flow sensor, a branch pH value sensor and a branch EC value sensor connected to the control system; the control system is also configured to obtain and record branch data of each water inlet branch pipe through the branch flow sensor, the branch pH value sensor and the branch EC value sensor, and the branch data includes the branch flow, the branch pH value and the branch EC value of each water inlet branch pipe; The control system is further configured to select the same branch data in at least one time period to perform a year-on-year analysis of the water inlet branch within multiple time spans; the control system is further configured to select the same branch data of different water inlet branches in at least one time period to perform a year-on-year analysis of the water inlet branch within the same time span; the time span includes daily, weekly and monthly; The control system is also configured to issue a warning when the result of the year-on-year analysis of the water inlet branch pipe is abnormal.

3. A precision water and fertilizer irrigation device as claimed in claim 2, characterized in that: It also includes a clean water main pipe connected to the water inlet main pipe, the clean water main pipe is used to inject clean water into the water inlet main pipe, the clean water main pipe is provided with a clean water main pipe solenoid valve, and the control system is further configured to control the working mode of the clean water main pipe to switch between a default non-flushing operation mode and a flushing operation mode according to the opening size of the clean water main pipe solenoid valve; A matrix EC value sensor and a matrix pH value sensor are also provided in the plant matrix, a quality sensor is also provided below the plant matrix, and the control system is further configured to obtain the matrix EC value, matrix pH value and plant quality through the matrix EC value sensor, the matrix pH value sensor and the quality sensor respectively; The control system is further configured to determine whether the matrix EC value exceeds a preset matrix EC threshold; The control system is further configured to randomly select plant data of at least one plant in at least one time period within multiple rounds of time spans to perform plant data year-on-year analysis, wherein the plant data includes real-time temperature of the plant substrate, real-time humidity of the plant substrate, EC value of the substrate, pH value of the substrate, and plant quality; The control system is also configured to issue a warning when the results of the year-on-year analysis of the plant data are abnormal.

4. A precise water and fertilizer irrigation device as claimed in claim 1, characterized in that: The tail water treatment and circulation device further comprises a filtering unit, an ultraviolet lamp, a tail water turbidity sensor, a tail water ammonia nitrogen value sensor and a waste water discharge pipe, and the tail water treatment and circulation device discharges non-compliant waste water through the waste water discharge pipe; The control system is also configured to obtain tail water turbidity and tail water ammonia nitrogen value through a tail water turbidity sensor and a tail water ammonia nitrogen value sensor connected thereto, and the control system is also configured to determine whether the tail water is compliant based on the tail water turbidity and the tail water ammonia nitrogen value.

5. The precise water and fertilizer irrigation device according to claim 1, characterized in that: The tailwater pipe comprises a plurality of tailwater branches and a tailwater main pipe; The tailwater branch pipe is arranged below the plant matrix to receive the tailwater seeping from the plant matrix, and the ends of the tailwater branch pipe are connected to the tailwater main pipe; The end of the tailwater main pipe is connected to the tailwater treatment and circulation device, and a tailwater flow sensor is provided on the tailwater main pipe. The control system is also configured to obtain the flow at the end of the tailwater main pipe through the tailwater flow sensor connected thereto; the control system is also configured to determine whether the difference between the flow at the end of the tailwater main pipe and the flow at the end of the inlet main pipe is normal, and the control system is also configured to issue a warning when the difference between the flow at the end of the main pipe and the flow at the end of the inlet main pipe is abnormal.

6. A precision water and fertilizer irrigation method, characterized in that: The following steps are involved: S1. The fertilizer bin drops materials into the water fertilizer barrel, and the water fertilizer barrel mixes the fertilizer and stirring water into water fertilizer, which flows out through the water inlet pipe. Specifically, the following steps are included: S101, the control system obtains and analyzes the fertilizer formula of the current plant, determines the components of the fertilizer formula and the theoretical feeding amount of each component, and sends feeding instructions to the fertilizer bins corresponding to each component; S102, the control system obtains the amount of fertilizer in the fertilizer bin in real time through the measuring device and calculates the current feeding amount until the current feeding amount is consistent with the theoretical feeding amount, and the control system controls the fertilizer bin to stop feeding; S103, the control system controls the stirring pump to mix the fertilizer and stirring water into water-fertilizer; S104, the control system obtains the pH value and EC value of the water and fertilizer, and determines whether the pH value and EC value of the water and fertilizer are within the standard range; if not, it goes to step S105; otherwise, it goes to step S2. S105, the control system determines the minimum feeding amount of the components according to the fertilizer formula, and sends feeding instructions to the fertilizer bins corresponding to each component; S106, the control system obtains the amount of fertilizer in the fertilizer bin in real time through the measuring device and calculates the current feeding amount until the current feeding amount is consistent with the minimum feeding amount, and the control system controls the fertilizer bin to stop feeding; S2, the control system obtains the real-time temperature t1 and real-time humidity h1 of the plant substrate, and adjusts the irrigation flow of the water inlet pipe to x1 according to the following formula: in: t0 is the base temperature of the plant substrate; t1 is the real-time temperature of the plant substrate; A0 is the irrigation flow required by the plant when the base temperature is t0; n is the number of times the plant needs to be irrigated per day; x0 is the irrigation flow required by the plant when the real-time temperature is t1; h0 is the base humidity of the plant substrate; h1 is the real-time humidity of the plant substrate; x1 is the irrigation flow required by the plant when the real-time temperature is t1 and the real-time humidity is h1; S3, the tailwater pipe receives and converges the tailwater under the seepage of the plant matrix to the tailwater treatment and circulation device; S4. After the tail water is treated by the tail water treatment and circulation device, the compliant tail water will be drained into the water fertilizer barrel to become stirring water.

7. A precision water and fertilizer irrigation method as claimed in claim 6, characterized in that: The water inlet pipe comprises a water inlet main pipe and a plurality of water inlet branch pipes; In step S2, the step of adjusting the irrigation flow of the water inlet pipe includes: the control system controls the opening of the solenoid valve on the water inlet pipe and obtains the end flow of the water inlet pipe in real time until the end flow of the water inlet pipe is consistent with the calculated irrigation flow x1 of the water inlet pipe, and the control system stops adjusting the solenoid valve.

8. A precision water and fertilizer irrigation method as claimed in claim 7, characterized in that: The steps between step S2 and step S3 also include: S21, the control system obtains the EC value of the plant matrix and determines whether it exceeds the matrix EC threshold, if not, proceeds to step S3; if exceeded, proceeds to step S22; S22, the control system switches the working mode of the clean water main to the flushing operation mode; S23, the control system calculates the irrigation flow x2 of the water inlet main according to the following formula: x2≥m*w0; Where: m is the number of plants; w0 is the minimum flow rate required for each plant to be flushed; S24, the control system reduces the opening of the water inlet main solenoid valve and increases the opening of the clean water main solenoid valve, so that the flow rate at the end of the water inlet main is not less than the calculated irrigation flow rate x2 of the water inlet main, and enters step S21.

9. A precision water and fertilizer irrigation method as claimed in claim 6, characterized in that: Step S4 specifically includes the following steps: S401, the filtration unit filters the tail water; S402, the control system controls the ultraviolet lamp to sterilize the tail water; S403, the control system obtains the tail water turbidity and tail water ammonia nitrogen value and determines whether the two are within a reasonable range, if not, proceeds to step S404, otherwise proceeds to step S405; S404, the control system determines that the tail water is waste water, and the tail water treatment and circulation device discharges the waste water through the waste water discharge pipe; S405. The control system determines that the tail water is compliant tail water, and the tail water treatment and circulation device diverts the compliant tail water to the water fertilizer barrel through the circulation pipe as stirring water.

10. A precision water and fertilizer irrigation method as claimed in claim 6, characterized in that: The tailwater pipe comprises a plurality of tailwater branches and a tailwater main pipe; Step S3 specifically includes the following steps: S301, the tailwater branch pipe receives the tailwater from the plant matrix seepage and converges it to the tailwater main pipe; S302, the tailwater main pipe drains the tailwater to the tailwater treatment and circulation device, and at the same time the control system obtains the end flow of the tailwater main pipe and the end flow of the water inlet main pipe and determines whether the difference between the two is normal. If it is abnormal, the control system issues a warning.

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