Water-fertilizer integrated system and control method

Abstract

The present application relates to a water-fertilizer integrated system and a control method. The water-fertilizer integrated system includes a fertilizer liquid preparation device, a control device, a water supply device and an irrigation device. Among them, the fertilizer liquid preparation device includes a fertilizer liquid mixing pipeline, each fertilizer liquid tank and a fertilizer liquid pump corresponding to the fertilizer liquid tank; the control device includes a controller, a mixed fertilizer liquid monitor and a mixed fertilizer liquid effective nitrogen monitor; the irrigation device includes a main irrigation pipeline and each branch irrigation pipeline. Based on the above structure, in the water-fertilizer integrated system, the controller cooperates with the fertilizer liquid pump and the water supply device to prepare the mixed fertilizer liquid according to the real-time data obtained by the mixed fertilizer liquid monitor and the mixed fertilizer liquid effective nitrogen monitor and the preset fertilizer liquid formula in the controller. The irrigation device transports the required mixed fertilizer liquid prepared by the clean water pump and the fertilizer liquid pump to the corresponding irrigation area, realizes accurate fertilizer preparation on demand and automatic irrigation, effectively avoids nitrogen fertilizer waste, and improves nitrogen fertilizer utilization rate.

Description

Technical Field

[0001] The present application relates to the field of agricultural production technology, and in particular to a water-fertilizer integrated system and a control method. Background Art

[0002] With the development of precision agriculture, people are paying more and more attention to precision irrigation and fertilization technology, and have proposed soil testing and fertilization technology. At present, nitrogen fertilizer detection is mainly based on chemical analysis methods. The process includes pretreatment such as air drying, screening, and impurity removal, long-term constant temperature cultivation and subsequent complex physical and chemical tests. It is time-consuming and requires professional experimenters. It cannot be directly used for agricultural production management and real-time guidance of irrigation and fertilization. With the development of electrochemical, electromagnetic, laser, and spectral technologies, more and more new technologies are being applied to rapid fertilizer detection.

[0003] However, the conventional fertigation system has at least the following problems: low utilization rate of nitrogen fertilizer. Summary of the invention

[0004] Based on this, it is necessary to provide a water-fertilizer integrated system and control method that can improve the utilization rate of nitrogen fertilizer in response to the above technical problems.

[0005] A water-fertilizer integrated system, comprising:

[0006] The fertilizer liquid preparation device comprises a fertilizer liquid mixing pipeline, each fertilizer liquid tank and a fertilizer liquid pump corresponding to the fertilizer liquid tank; the liquid outlet of the fertilizer liquid tank is connected to the liquid inlet of the corresponding fertilizer liquid pump; the liquid outlet of the fertilizer liquid pump is connected to the liquid inlet of the fertilizer liquid mixing pipeline;

[0007] The control device comprises a controller, a mixed fertilizer liquid monitor and a mixed fertilizer liquid effective nitrogen monitor; the controller is respectively connected to the mixed fertilizer liquid monitor and the mixed fertilizer liquid effective nitrogen monitor in communication; the mixed fertilizer liquid monitor is arranged in the fertilizer liquid mixing pipeline; the mixed fertilizer liquid effective nitrogen monitor is used to obtain the effective nitrogen value of the mixed fertilizer liquid in the fertilizer liquid mixing pipeline; the controller is electrically connected to the liquid outlet control end of the fertilizer liquid pump;

[0008] A water supply device; the water outlet of the water supply device is connected to the water inlet of the fertilizer liquid mixing pipeline; the water outlet control end of the water supply device is electrically connected to the controller;

[0009] The irrigation device comprises a main irrigation pipe and branch irrigation pipes; the liquid inlet of the main irrigation pipe is connected to the fertilizer liquid outlet of the fertilizer liquid mixing pipe; the liquid outlet of the main irrigation pipe is respectively connected to the branch irrigation pipes; the branch irrigation pipes are used to be connected to the corresponding irrigation areas.

[0010] A water-fertilizer integrated system control method is applied to the water-fertilizer integrated system.

[0011] Water and fertilizer integrated system, including:

[0012] The fertilizer liquid preparation device comprises a fertilizer liquid mixing pipeline, each fertilizer liquid tank and a fertilizer liquid pump corresponding to the fertilizer liquid tank; the liquid outlet of the fertilizer liquid tank is connected to the liquid inlet of the corresponding fertilizer liquid pump; the liquid outlet of the fertilizer liquid pump is connected to the liquid inlet of the fertilizer liquid mixing pipeline;

[0013] Water supply device; the water supply device includes a clean water tank and a clean water pump; the water outlet of the clean water tank is connected to the water inlet of the clean water pump; the water outlet of the clean water pump is connected to the water inlet of the fertilizer liquid mixing pipeline;

[0014] The control device comprises a controller, a mixed fertilizer liquid monitor and a mixed fertilizer liquid effective nitrogen monitor; the controller is respectively connected to the mixed fertilizer liquid monitor and the mixed fertilizer liquid effective nitrogen monitor in communication; the mixed fertilizer liquid monitor is arranged in a fertilizer liquid mixing pipeline; the mixed fertilizer liquid monitor is used to obtain the EC value and the pH value of the mixed fertilizer liquid in the fertilizer liquid mixing pipeline; the mixed fertilizer liquid effective nitrogen monitor is used to obtain the effective nitrogen value of the mixed fertilizer liquid in the fertilizer liquid mixing pipeline; the controller is respectively electrically connected to the liquid outlet control end of the fertilizer liquid pump and the water outlet control end of the clean water pump;

[0015] The irrigation device comprises a main irrigation pipeline, branch irrigation pipelines and solenoid valves corresponding to the branch irrigation pipelines; the liquid inlet of the main irrigation pipeline is connected to the fertilizer liquid outlet of the fertilizer liquid mixing pipeline; the liquid outlet of the main irrigation pipeline is connected to the corresponding branch irrigation pipeline through the solenoid valve; the branch irrigation pipeline is used to be connected to the corresponding irrigation area;

[0016] The control methods of water-fertilizer integrated system include:

[0017] The controller determines the water-fertilizer solution preparation scheme according to the preset fertilizer solution formula and the obtained mixed fertilizer solution data; the preset fertilizer solution formula includes the preset irrigation solution effective nitrogen value, irrigation solution EC value and irrigation solution pH value; the mixed fertilizer solution data includes the obtained mixed fertilizer solution EC value, mixed fertilizer solution pH value and mixed fertilizer solution effective nitrogen value;

[0018] The controller sends a first water supply instruction to the clean water pump and a first fertilizer liquid instruction to the fertilizer liquid pump according to the water fertilizer solution preparation plan; the first water supply instruction includes a water output amount and a water output time; the first fertilizer liquid instruction includes a liquid output amount and a liquid output time;

[0019] The controller sends an irrigation instruction to the irrigation device; the irrigation instruction is used to instruct the irrigation device to irrigate with the mixed fertilizer solution prepared by the clean water pump and the fertilizer solution pump.

[0020] A computer device comprises a memory and a processor, wherein the memory stores a computer program, and when the program is executed by the processor, the steps of the water-fertilizer integrated system control method as described above are implemented.

[0021] A computer-readable storage medium stores a computer program, which implements the steps of the above-mentioned water-fertilizer integrated system control method when executed by a processor.

[0022] The above provides a water-fertilizer integrated system, including a fertilizer liquid preparation device, a control device, a water supply device and an irrigation device. Among them, the fertilizer liquid preparation device includes a fertilizer liquid mixing pipeline, each fertilizer liquid tank and a fertilizer liquid pump corresponding to the fertilizer liquid tank; the control device includes a controller, a mixed fertilizer liquid monitor and a mixed fertilizer liquid effective nitrogen monitor; the irrigation device includes a main irrigation pipeline and each branch irrigation pipeline. Based on the above structure, in the water-fertilizer integrated system, the controller cooperates with the fertilizer liquid pump, the water supply device and the irrigation device according to the real-time data obtained by the mixed fertilizer liquid monitor and the mixed fertilizer liquid effective nitrogen monitor and the preset fertilizer liquid formula in the controller to achieve the preparation of the required mixed fertilizer liquid, and transport the required mixed fertilizer liquid prepared by the clean water pump and the fertilizer liquid pump to the corresponding irrigation area, so as to achieve accurate fertilizer preparation on demand and automatic irrigation, effectively avoid nitrogen fertilizer waste, improve nitrogen fertilizer utilization rate, and achieve the effect of refined water and fertilizer saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and other purposes, features and advantages of the present application will become clearer through a more specific description of the preferred embodiments of the present application shown in the accompanying drawings. The same reference numerals indicate the same parts in all the accompanying drawings, and the drawings are not deliberately scaled to the actual size, and the focus is on illustrating the subject matter of the present application.

[0024] Figure 1 This is a first structural schematic diagram of a water-fertilizer integrated system in one embodiment;

[0025] Figure 2 A first structural schematic diagram of a control device for a water-fertilizer integration system in one embodiment;

[0026] Figure 3 A second structural schematic diagram of a control device for a water-fertilizer integration system in one embodiment;

[0027] Figure 4 A second structural schematic diagram of a water-fertilizer integrated system in one embodiment;

[0028] Figure 5 A third structural schematic diagram of a control device for a water-fertilizer integration system in one embodiment;

[0029] Figure 6 A third structural schematic diagram of a water-fertilizer integrated system in one embodiment;

[0030] Figure 7 A partial structural schematic diagram of a water-fertilizer integrated system in one embodiment;

[0031] Figure 8 A fourth structural schematic diagram of a control device for a water-fertilizer integration system in one embodiment;

[0032] Fig. 9 A schematic diagram of a first flow chart of a water-fertilizer integrated system control method in one embodiment;

[0033] Fig.10 A second flow chart of a water-fertilizer integrated system control method in one embodiment;

[0034] Fig.11 A schematic diagram of a water-fertilizer integrated system control method using coconut husk substrate as an example in one embodiment;

[0035] Fig.12 A third flow chart of a water-fertilizer integrated system control method in one embodiment;

[0036] Fig.13 A fourth flow chart of a water-fertilizer integrated system control method in one embodiment;

[0037] Fig.14 A schematic diagram of the operation flow of a water-fertilizer integrated system in one embodiment;

[0038] Fig.15 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] Nitrogen is an important component of proteins, nucleic acids and chlorophyll. Nitrogen fertilizer has an important impact on the growth and development of crops. Available nitrogen refers to nitrogen that is easily absorbed by crops, which directly reflects the nitrogen fertilizer supply capacity. In agricultural production, nitrogen fertilizer is usually used to increase the content of available nitrogen. Failure to conduct correct environmental nutrient content monitoring and analysis often leads to excessive fertilization, which not only causes fertilizer waste and increases production costs, but also causes serious agricultural non-point source pollution problems.

[0041] The embodiments of the present application can be applied to the field of agricultural precision production technology; with the development of precision agriculture, people are paying more and more attention to precision irrigation and fertilization technology, and have proposed soil testing and formula fertilization technology. At present, nitrogen fertilizer monitoring is mainly based on chemical analysis methods, and its process includes pretreatment such as air drying, screening, and impurity removal, long-term constant temperature cultivation and subsequent complex physical and chemical tests, which are time-consuming and require professional experimenters. It cannot be directly used for agricultural production management and real-time guidance of irrigation and fertilization, resulting in low nitrogen fertilizer utilization rate. Therefore, in order to solve the problem of low utilization rate of existing nitrogen fertilizers, the present application provides a water-fertilizer integration system that can improve the utilization rate of nitrogen fertilizers, improve the accuracy and intelligence of water-fertilizer integration technology, and is of great significance to reducing non-point source pollution in facility agriculture and realizing scientific agricultural production.

[0042] In one embodiment, Figure 1 As shown, a water-fertilizer integrated system is provided, comprising:

[0043] The fertilizer liquid preparation device comprises a fertilizer liquid mixing pipeline, each fertilizer liquid tank and a fertilizer liquid pump corresponding to the fertilizer liquid tank; the liquid outlet of the fertilizer liquid tank is connected to the liquid inlet of the corresponding fertilizer liquid pump; the liquid outlet of the fertilizer liquid pump is connected to the liquid inlet of the fertilizer liquid mixing pipeline;

[0044] The control device (not shown) includes a controller, a mixed fertilizer liquid monitor and a mixed fertilizer liquid effective nitrogen monitor; the controller is respectively connected to the mixed fertilizer liquid monitor and the mixed fertilizer liquid effective nitrogen monitor; the mixed fertilizer liquid monitor is arranged in the fertilizer liquid mixing pipeline; the mixed fertilizer liquid effective nitrogen monitor is used to obtain the mixed fertilizer liquid effective nitrogen value in the fertilizer liquid mixing pipeline; the controller is electrically connected to the liquid outlet control end of the fertilizer liquid pump;

[0045] A water supply device; the water outlet of the water supply device is connected to the water inlet of the fertilizer liquid mixing pipeline; the water outlet control end of the water supply device is electrically connected to the controller;

[0046] The irrigation device comprises a main irrigation pipe and branch irrigation pipes; the liquid inlet of the main irrigation pipe is connected to the fertilizer liquid outlet of the fertilizer liquid mixing pipe; the liquid outlet of the main irrigation pipe is respectively connected to the branch irrigation pipes; the branch irrigation pipes are used to be connected to the corresponding irrigation areas.

[0047] Specifically, the fertilizer liquid preparation device includes a fertilizer liquid mixing pipeline, various fertilizer liquid tanks, and fertilizer liquid pumps corresponding to the fertilizer liquid tanks. Each fertilizer liquid tank stores various basic fertilizer liquids for preparing the required mixed fertilizer liquid. The fertilizer liquid pump is used to control the flow rate and liquid discharge time of the corresponding fertilizer liquid tank. The basic fertilizer liquid in each fertilizer liquid tank is input into the fertilizer liquid mixing pipeline through the corresponding fertilizer liquid pump and directly mixed with clean water in the mixing pipeline. Each fertilizer liquid tank stores at least one or more basic fertilizer liquids such as nutrient solution, acid solution and drug solution. Among them, the nutrient solution is mainly A+C fertilizer or B fertilizer, A fertilizer is mainly nitrogen fertilizer and potassium (such as KNO3 or Ca(NO3)2), C fertilizer is trace elements, and B fertilizer contains phosphorus fertilizer; acid solution is used to adjust the pH value; drug solution can be used for drug application at the same time as fertilization. Exemplarily, the fertilizer liquid preparation device includes fertilizer liquid tanks A, B, C and D, wherein the fertilizer liquid tank A stores A+C fertilizers, the fertilizer liquid tank B stores acid liquid, the fertilizer liquid tank C stores liquid medicine, and the fertilizer liquid tank D stores B fertilizer.

[0048] like Figure 2 As shown, the control device includes a controller, a mixed fertilizer liquid monitor and a mixed fertilizer liquid effective nitrogen detector. Among them, the mixed fertilizer liquid monitor can be used to obtain the EC value (The value of EC, the concentration of soluble ions in liquid fertilizer), pH (pondus hydrogenii, acidity and alkalinity) value and dissolved oxygen value in the fertilizer liquid mixing pipeline. The mixed fertilizer liquid effective nitrogen monitor is used to obtain the effective nitrogen value in the fertilizer liquid mixing pipeline. The implementation method of the mixed fertilizer liquid effective nitrogen monitor is not specifically limited here. For example, the mixed fertilizer liquid effective nitrogen monitor can be based on near-infrared spectroscopy technology, and its optical fiber probe and light source can be implanted into both sides of the fertilizer liquid mixing pipeline, and the transmission dynamic measurement principle can be used to detect the effective nitrogen value of the mixed fertilizer liquid in real time; the mixed fertilizer liquid effective nitrogen monitor can also extract a part of the mixed fertilizer liquid from the fertilizer liquid mixing pipeline, and adopt the transmission static measurement principle to detect the effective nitrogen value of the mixed fertilizer liquid.

[0049] The controller is respectively connected to the mixed fertilizer liquid monitor and the mixed fertilizer liquid effective nitrogen monitor. Exemplarily, the controller may include a single chip microcomputer, a FPGA (Field-Programmable Gate Array) or other devices with control functions.

[0050] The water supply device is used to provide clean water required for irrigation and liquid preparation. The water supply device may include a filter, a clean water pump, a solenoid valve, a water reservoir, a pipeline assembly, and a pressure gauge provided on the water supply pipeline. The controller is electrically connected to the liquid outlet control end of the fertilizer pump and the water outlet control end of the water supply device, respectively. The controller can be used to control the fertilizer pump and the water supply device respectively according to the obtained preset fertilizer formula, the effective nitrogen value of the mixed fertilizer liquid, and the real-time data of the mixed fertilizer liquid monitor to prepare the required mixed preset fertilizer formula. The preset fertilizer formula may include irrigation area selection information, the effective nitrogen value, pH value, EC value, irrigation time, output ratio and irrigation amount of the basic fertilizer liquid of each fertilizer tank, etc. The controller controls the output amount of the basic fertilizer liquid in different fertilizer tanks through the liquid outlet control end of each fertilizer pump, adjusts the ratio of each basic fertilizer liquid and clean water in the fertilizer liquid mixing pipeline to form the required mixed fertilizer liquid, so as to meet the nutritional needs of different crops in different growth periods, effectively avoid excessive fertilization, achieve precise fertilizer preparation, and improve the utilization rate of nitrogen fertilizer. The basic fertilizer liquid output from each fertilizer liquid tank is directly and accurately injected into the fertilizer liquid mixing pipeline, and mixed with the clean water provided by the water supply device, and then applied to the crops in a timely and appropriate amount, effectively improving the fertilizer distribution accuracy and not being restricted by the irrigation area. The traditional fertilizer injector relies on the negative pressure to extract bypass clean water and controls the injection ratio of the fertilizer liquid through the opening and closing frequency of the solenoid valve, which is easily restricted by the irrigation area.

[0051] The irrigation device includes a main irrigation pipe and branch irrigation pipes. The prepared mixed fertilizer liquid can be sequentially injected into the corresponding irrigation area through the main irrigation pipe and the branch irrigation pipes to supply crops, so as to realize automatic irrigation and make agricultural irrigation and fertilization more precise.

[0052] Based on the above structure, the controller controls the fertilizer liquid preparation device and the water supply device respectively according to the data obtained by each monitor and the preset fertilizer liquid formula, adjusts the mixing ratio of each fertilizer liquid and water in the water-fertilizer solution in the fertilizer liquid mixing pipeline, obtains a suitable concentration of the mixed fertilizer liquid, realizes accurate quantitative fertilizer distribution, avoids excessive fertilization, and improves the utilization rate of nitrogen fertilizer. The irrigation device transports the required mixed fertilizer liquid to the corresponding irrigation area and supplies crops through the corresponding branch irrigation pipeline, realizes automatic irrigation, and improves the accuracy and intelligence of the water-fertilizer integration technology. In the embodiment of the present application, based on the on-site rapid detection of the fertilizer concentration of the water-fertilizer solution, the fertilizer liquid preparation device, the control device, the water supply device and the irrigation device cooperate with each other to realize on-demand accurate irrigation and fertilization, effectively improving the utilization rate of nitrogen fertilizer.

[0053] In one embodiment, Figure 3 As shown, the mixed fertilizer liquid monitor includes an EC sensor and a pH sensor disposed in the fertilizer liquid mixing pipeline;

[0054] The controller is respectively connected to the EC sensor and the pH sensor for communication.

[0055] Specifically, the EC sensor is used to obtain the real-time conductivity of the mixed fertilizer liquid in the fertilizer liquid mixing pipeline; the pH sensor is used to obtain the real-time pH value of the mixed fertilizer liquid; preferably, the pH sensor is a MIK-PH160pH sensor.

[0056] The controller can monitor the concentration of the mixed fertilizer solution in real time according to the real-time conductivity, real-time pH value and effective nitrogen value of the mixed fertilizer solution, so as to adjust the flow rate and output time of each fertilizer pump and water supply device, realize accurate fertilizer distribution and improve production efficiency.

[0057] Preferably, the EC sensor is a MIK-TDS210EC sensor, which integrates standard analog output and communication output functions, supports various acquisition devices such as digital display, PLC, inverter, DCS, recorder, etc., and can accurately and dynamically monitor the conductivity of water and fertilizer solution. The specific parameters are shown in Table 1 below:

[0058] Table 1 EC sensor related parameters

[0059]

[0060] In one embodiment, Figure 4 As shown, the water supply device includes a clean water tank and a clean water pump. The water outlet of the clean water tank is connected to the water inlet of the clean water pump; the water outlet of the clean water pump is connected to the water inlet of the fertilizer liquid mixing pipeline; and the water outlet control end of the clean water pump is electrically connected to the controller.

[0061] Specifically, the water used for irrigation and liquid preparation in the clean water tank is continuously and stably transported to the fertilizer liquid mixing pipeline by the clean water pump to prepare the mixed fertilizer liquid. The controller can control the clean water to mix with each basic fertilizer liquid or realize clean water irrigation by controlling the clean water pump. In one embodiment, the water supply device also includes a filter; the filter is arranged between the clean water tank and the clean water pump. The filter is used to further filter the water injected into the clean water pump to avoid blockage and improve the system operation effect.

[0062] Preferably, the water pump is a MVL206 pump, and the relevant technical parameters are shown in Table 2 below:

[0063]

[0064] Table 2 MVL206 pump related technical parameters

[0065] In one embodiment, the control device further includes a liquid level sensor disposed in the clean water tank; the liquid level sensor is communicatively connected to the controller.

[0066] Specifically, the liquid level sensor can be used to monitor the real-time liquid level in the clean water tank in real time, and send the acquired real-time liquid level to the controller to prevent the real-time liquid level in the clean water tank from being too low and affecting the preparation of the required mixed fertilizer solution. In one embodiment, the liquid level sensor is a drop-in liquid level sensor. In one embodiment, the irrigation device also includes an inlet pump; the water outlet of the inlet pump is connected to the water inlet of the clean water pump; and the control end of the inlet pump is electrically connected to the controller. When the real-time liquid level in the clean water tank is lower than the set value, the controller starts the inlet pump to add water to the clean water tank; when the real-time liquid level in the clean water tank reaches or exceeds the set value, the inlet pump stops working, thereby ensuring the normal irrigation amount for each irrigation area. Preferably, the liquid level sensor is a MIK-P260 liquid level sensor.

[0067] In one embodiment, Figure 5 As shown, the controller includes a control component and a processor;

[0068] The control component is electrically connected to the processor; the control component can be used to obtain a preset fertilizer liquid formula;

[0069] The processor is respectively connected to the mixed fertilizer liquid monitor and the mixed fertilizer liquid effective nitrogen monitor in communication; the processor is respectively connected to the water outlet control end of the water supply device and the liquid outlet control end of the fertilizer liquid pump in electrical communication.

[0070] In one embodiment, the control component can be used to obtain a preset fertilizer liquid formula to achieve human-computer interaction; the control component can also be used to view the current system operation status and display the change curve of the effective nitrogen of the mixed fertilizer liquid in the fertilizer liquid mixing pipeline. Exemplarily, the control component includes an input component and an output component. Optionally, the input component includes at least one of a keyboard, a mouse and a touch screen; optionally, the output component can be a touch screen or a display screen. The preset fertilizer liquid formula can be obtained according to the fertilizer liquid formula number stored in the processor, or can be obtained according to the fertilizer liquid formula data set on the control component.

[0071] The processor is respectively connected to the mixed fertilizer liquid monitor and the mixed fertilizer liquid effective nitrogen monitor, and can obtain the real-time mixed fertilizer liquid effective nitrogen value, EC value and pH value in the fertilizer liquid mixing pipeline; the processor controls the water supply device and the fertilizer liquid pump according to the preset fertilizer liquid formula and the real-time obtained mixed fertilizer liquid data, until the real-time mixed fertilizer liquid data meets the preset fertilizer liquid formula, effectively avoiding fertilizer liquid waste, improving nitrogen fertilizer utilization, and realizing accurate fertilizer distribution. Furthermore, the processor controls the prepared mixed fertilizer liquid to be sequentially delivered through the fertilizer liquid outlet of the fertilizer liquid mixing pipeline, the main irrigation pipeline to the branch irrigation pipeline corresponding to each irrigation area, so as to realize the automatic irrigation of crops in each irrigation area and provide scientific guidance for farmers' irrigation and fertilization. In one embodiment, the processor can be a PLC (Programmable Logic Controller), a CPU (Central Processing Unit), an FPGA, etc.

[0072] Preferably, the control component is a LS530C touch screen; its relevant technical parameters are shown in Table 3:

[0073] Table 3 Touch screen parameters

[0074] Indicator name Technical Parameters Response time 5ms Resolution 4096×4096 Number of touches >50 million times CPU Celeron Dual Core 1.8GHz

[0075] Preferably, the processor is FX5U PLC, and its relevant technical parameters are shown in Table 4:

[0076] Table 4 PLC technical parameters

[0077]

[0078] In one embodiment, the control device further comprises a communication module;

[0079] A communication module, connected to the processor for communication;

[0080] The processor is respectively connected to the mixed fertilizer liquid monitor and the mixed fertilizer liquid effective nitrogen monitor through the communication module.

[0081] Specifically, the communication module is used to communicate with the mixed fertilizer liquid monitor and the mixed fertilizer liquid effective nitrogen monitor, and send the obtained mixed fertilizer liquid effective nitrogen value, mixed fertilizer liquid EC value, and mixed fertilizer liquid pH value to the processor, thereby realizing real-time monitoring and control of the water-fertilizer integrated system. In the embodiment of the present application, the communication module can be, but is not limited to: a Bluetooth module, a ZigBee module, a 5G communication module, etc.

[0082] In one embodiment, Figure 6 As shown, the irrigation device further includes a plurality of solenoid valves, and a solenoid valve driving circuit (not shown) corresponding to each solenoid valve;

[0083] The branch irrigation pipeline is connected to the liquid outlet of the main irrigation pipeline through a corresponding solenoid valve; the solenoid valve is electrically connected to the controller through a corresponding solenoid valve driving circuit.

[0084] Specifically, the controller drives the corresponding solenoid valve to be turned on and off through the solenoid valve drive circuit to select the irrigation area that needs to be irrigated and fertilized. The mixed fertilizer liquid prepared by the water supply device and the fertilizer liquid pump enters the corresponding branch irrigation pipeline through the main irrigation pipeline and the conductive solenoid valve to accurately fertilize and irrigate the selected irrigation area. In one embodiment, the water-fertilizer integration system includes 4 fertilizer liquid tanks, that is, a standard 4-channel configuration. The basic fertilizer liquid in each fertilizer liquid tank is injected into the fertilizer liquid mixing pipeline through the corresponding fertilizer liquid pump. 4 basic mother liquids can be input at the same time. The single-channel flow rate is 1000ml / min, and 2 standard channel outputs are set to irrigate the roots and / or leaves of crops. The water-fertilizer integration system monitors the concentration of the nutrient solution in real time, dynamically adjusts the EC value and pH value of the mixed fertilizer solution, so as to directly and accurately inject the fertilizer into the fertilizer liquid mixing pipeline, and apply it to the crops together with the irrigation water in a timely and appropriate amount.

[0085] In one embodiment, Figure 7 As shown, the solenoid valve may include a first solenoid valve and a second solenoid valve. The first solenoid valve is used for spraying on the leaves of crops; the second solenoid valve is used for irrigating and fertilizing the roots of crops. The branch irrigation pipeline is connected to the outlet of the main irrigation pipeline through the corresponding solenoid valve; the solenoid valve is electrically connected to the controller through the corresponding solenoid valve drive circuit. In the embodiment of the present application, the controller turns on the first solenoid valve and / or the second solenoid valve of the corresponding irrigation area through the corresponding solenoid valve drive circuit to fertilize and irrigate the leaves and / or roots of the crops in the required irrigation area, so as to meet the actual growth needs of different crops and have a wide range of applications.

[0086] In one embodiment, Figure 7 As shown, the water supply device also includes a pressure relief valve; the pressure relief valve is arranged on the pipeline of the clean water pump.

[0087] Specifically, the water supply device further includes a pressure relief valve, which is arranged on the pipeline of the clean water pump, and is used for the pressure in the pipeline of the clean water pump to reach the pressure relief pressure value of the pressure relief valve, and the pressure relief valve is used to relieve the pressure, thereby reducing the water outlet pressure value of the clean water pump to ensure the safety of the pipeline. In one embodiment, the water supply device further includes a pressure gauge; the pressure gauge is arranged on the pipeline of the clean water pump, and the pressure gauge is used to display the pressure value of the clean water pump.

[0088] In one embodiment, the control device further includes an environmental monitor provided in each irrigation area; the environmental monitor is communicatively connected with the controller. Specifically, the environmental monitor is used to monitor the environmental parameters of each irrigation area and send the acquired environmental parameters to the controller. The controller controls the fertilizer liquid pump and the water supply device respectively according to the environmental parameters of each irrigation area, the effective nitrogen value of the mixed fertilizer liquid in the fertilizer liquid mixing pipeline, and the real-time data collected by the mixed fertilizer liquid monitor, so as to achieve accurate fertilizer distribution, improve the utilization rate of nitrogen fertilizer, and effectively avoid the waste of nitrogen fertilizer.

[0089] In one embodiment, the environmental monitor includes a temperature sensor and a humidity sensor disposed in each irrigation zone;

[0090] The controller is respectively connected to the temperature sensor and the humidity sensor for communication.

[0091] Specifically, the temperature sensor may include a soil temperature sensor, an indoor temperature sensor, an outdoor temperature sensor, etc.; the humidity sensor may include an outdoor humidity sensor, an indoor humidity sensor, etc.

[0092] In the embodiment of the present application, the water-fertilizer solution preparation scheme can be determined based on the real-time detection data in the fertilizer liquid mixing pipeline and the greenhouse environment data. The controller controls the fertilizer liquid preparation device to adjust the mixing ratio of nitrogen fertilizer and water to obtain a suitable nitrogen fertilizer liquid concentration, realize precise quantitative irrigation and fertilization, and improve the utilization rate of nitrogen fertilizer. Preferably, the fertilizer liquid pump is a K25 / TB pump. The relevant parameters of the fertilizer liquid pump are shown in Table 5 below:

[0093] Table 5 Technical parameters of fertilizer liquid pump

[0094]

[0095] like Figure 8 As shown, in one embodiment, the control device also includes a matrix effective nitrogen monitor; the matrix effective nitrogen monitor is connected to the controller in communication; the matrix effective nitrogen monitor is used to obtain the effective nitrogen value of the cultivation matrix and provide a basis for the setting of the fertilizer solution formula. The matrix effective nitrogen monitor cooperates with the mixed fertilizer solution effective nitrogen monitor to achieve the requirements of accurately preparing the effective nitrogen solution, prevent waste and pollution caused by excessive nitrogen fertilizer, and avoid the impact of too little nitrogen fertilizer on crop growth, effectively improving the utilization rate of nitrogen fertilizer. In the traditional fertigation system, fertilizer is mainly prepared by monitoring the EC and pH in the water-fertilizer solution, and it is not possible to prepare specific nutrients required for crops, and accurate fertilizer preparation cannot be achieved. For this reason, in the embodiment of the present application, by combining the method of monitoring the effective nitrogen value of the mixed fertilizer solution and the matrix effective nitrogen, and combining the EC, pH and crop growth environment parameters of the mixed fertilizer solution, the requirements of accurate preparation of the effective nitrogen solution are achieved, and then intelligent accurate quantitative fertigation is realized, effectively improving the utilization rate of nitrogen fertilizer.

[0096] Specifically, the matrix effective nitrogen monitor may include a conveying system, a sample pretreatment system, a detection system and a control system. Among them, the sample pretreatment system can automatically perform operations such as sample drying, crushing and screening, and mainly includes a drive motor, a crushing chamber, a screen, a heating plate, a heat insulation plate and other components. The crushing chamber consists of an upper part of the crushing chamber and a lower part of the crushing chamber, and the upper and lower parts are connected together by a thread to form a closed crushing space. The sample drying time and crushing time can be controlled by controlling the working time of the motor and the heating plate.

[0097] Among them, the detection system mainly includes a near-infrared spectrometer, two 35w halogen tungsten lamps, optical fiber and optical fiber probe, ball screw slide, sample chamber, computer control unit and dark box. The sampling interval of the spectral data of this system is 3.4nm, the signal-to-noise ratio is 6000:1, and its integration time, smoothness and scanning average times are set to 3ms, 5 and 3 respectively. By adjusting the adjustment bolts on the optical fiber probe fixing support frame, the distance between the optical fiber probe and the sample can be changed, and the distance between the optical fiber probe and the sample surface is set to 13mm. Before the sample is tested, turn on the halogen tungsten lamp for preheating for 30min until the light source is stable before collecting spectral data. When the CCD temperature of the spectrometer reaches the set value and the light source is stable, a polytetrafluoroethylene standard white board is used for blackboard reference acquisition.

[0098] The spectral data acquisition mode is set to reflection measurement through the control button on the control panel, and the two halogen tungsten lamp light sources under the detection platform are turned on. The halogen tungsten lamp light shines on the sample surface in the quartz sample chamber through the light-transmitting holes on the detection platform. The light signal reflected by the sample surface enters the fiber optic probe and is finally received by the spectrometer.

[0099] In one embodiment, a water-fertilizer integrated system control method is applied to the water-fertilizer integrated system.

[0100] Water and fertilizer integrated system, including:

[0101] The fertilizer liquid preparation device comprises a fertilizer liquid mixing pipeline, each fertilizer liquid tank and a fertilizer liquid pump corresponding to the fertilizer liquid tank; the liquid outlet of the fertilizer liquid tank is connected to the liquid inlet of the corresponding fertilizer liquid pump; the liquid outlet of the fertilizer liquid pump is connected to the liquid inlet of the fertilizer liquid mixing pipeline;

[0102] Water supply device; the water supply device includes a clean water tank and a clean water pump; the water outlet of the clean water tank is connected to the water inlet of the clean water pump; the water outlet of the clean water pump is connected to the water inlet of the fertilizer liquid mixing pipeline;

[0103] The control device comprises a controller, a mixed fertilizer liquid monitor and a mixed fertilizer liquid effective nitrogen monitor; the controller is respectively connected to the mixed fertilizer liquid monitor and the mixed fertilizer liquid effective nitrogen monitor in communication; the mixed fertilizer liquid monitor is arranged in a fertilizer liquid mixing pipeline; the mixed fertilizer liquid monitor is used to obtain the EC value and the pH value of the mixed fertilizer liquid in the fertilizer liquid mixing pipeline; the mixed fertilizer liquid effective nitrogen monitor is used to obtain the effective nitrogen value of the mixed fertilizer liquid in the fertilizer liquid mixing pipeline; the controller is respectively electrically connected to the liquid outlet control end of the fertilizer liquid pump and the water outlet control end of the clean water pump;

[0104] The irrigation device comprises a main irrigation pipeline, branch irrigation pipelines and solenoid valves corresponding to the branch irrigation pipelines; the liquid inlet of the main irrigation pipeline is connected to the fertilizer liquid outlet of the fertilizer liquid mixing pipeline; the liquid outlet of the main irrigation pipeline is connected to the corresponding branch irrigation pipeline through the solenoid valve; the branch irrigation pipeline is used to be connected to the corresponding irrigation area;

[0105] like Fig. 9 As shown, the water-fertilizer integrated system control method includes:

[0106] Step S100, the controller determines the water-fertilizer solution preparation scheme according to the preset fertilizer solution formula and the obtained mixed fertilizer solution data; the preset fertilizer solution formula includes the preset irrigation solution effective nitrogen value, irrigation solution EC value and irrigation solution pH value; the mixed fertilizer solution data includes the obtained mixed fertilizer solution EC value, mixed fertilizer solution pH value and mixed fertilizer solution effective nitrogen value;

[0107] Step S200: The controller sends a first water supply instruction to the clean water pump and a first fertilizer liquid instruction to the fertilizer liquid pump according to the water-fertilizer solution preparation scheme; the first water supply instruction includes a water output amount and a water output time; the first fertilizer liquid instruction includes a liquid output amount and a liquid output time;

[0108] Step S500: The controller sends an irrigation instruction to the irrigation device; the irrigation instruction is used to instruct the irrigation device to irrigate with the mixed fertilizer solution prepared by the clean water pump and the fertilizer solution pump.

[0109] Specifically, the preset fertilizer liquid formula may include a preset irrigation liquid effective nitrogen value, an irrigation liquid EC value, an irrigation liquid pH value, a basic fertilizer liquid ratio in each fertilizer liquid tank, and an irrigation amount, etc. The preset fertilizer liquid formula may be determined according to the growth requirements of different crops at different growth stages.

[0110] The controller sends a first water supply instruction to the clean water pump and a first fertilizer liquid instruction to the fertilizer liquid pump according to the water fertilizer solution preparation plan. The first water supply instruction can be used to indicate the water output and water output time of the clean water pump; the first fertilizer liquid instruction can be used to indicate the liquid output and liquid output time of the corresponding fertilizer liquid pump.

[0111] The controller sends an irrigation instruction to the irrigation device, controlling the irrigation device to irrigate with the mixed fertilizer solution prepared by the clean water pump and the fertilizer solution pump. The prepared mixed fertilizer solution can be transported to the corresponding irrigation area through the fertilizer solution outlet of the fertilizer solution mixing pipeline, the main irrigation pipeline and the branch irrigation pipeline in sequence, providing the crops with the mixed fertilizer solution required for growth, realizing automatic irrigation and achieving the effect of saving water and fertilizer.

[0112] In the embodiment of the present application, a water-fertilizer integration system control method is provided, which is applied to the water-fertilizer integration system. The controller determines the water-fertilizer solution preparation scheme according to the preset fertilizer solution formula and the real-time mixed fertilizer solution data obtained, and controls the clean water pump and the fertilizer solution pump according to the water-fertilizer solution preparation scheme, so that the basic fertilizer solution in each fertilizer solution tank is mixed with the irrigation water output by the clean water pump in the fertilizer solution mixing pipeline, and a mixed fertilizer solution of appropriate concentration is prepared to achieve accurate fertilizer distribution, avoid improper fertilization such as over-fertilization, and improve the utilization rate of nitrogen fertilizer. Furthermore, the controller controls the irrigation device to perform automatic irrigation, and transports the prepared mixed fertilizer solution to the corresponding irrigation area, thereby improving the accuracy and intelligence of the water-fertilizer integration technology, which is of great significance to reducing non-point source pollution of facility agriculture and realizing scientific agricultural production.

[0113] In one embodiment, the preset fertilizer liquid formula is determined according to the obtained effective nitrogen content of the substrate. Among them, the detection of the effective nitrogen content of the substrate can adopt visible near-infrared spectroscopy diffuse reflectance analysis technology, combined with various chemometric methods such as alkaline diffusion method, by establishing a near-infrared spectrum accurate prediction model for the effective nitrogen content in the substrate environment, and quickly obtaining the effective nitrogen content of the substrate. Then, according to the accurate effective nitrogen content of the substrate, the preset fertilizer liquid formula is determined. In one embodiment, based on the near-infrared rapid spectral accurate prediction model of the effective nitrogen concentration of the water-fertilizer solution, the effective nitrogen value of the mixed fertilizer solution is obtained. The near-infrared rapid spectral accurate prediction model of the effective nitrogen concentration of the water-fertilizer solution is obtained by combining the visible near-infrared spectral transmission analysis technology with the chemometric method. Exemplarily, the chemometric method includes indigo blue colorimetry.

[0114] In one embodiment, Fig.10 As shown, after the controller sends a first water supply instruction to the clean water pump and sends a first fertilizer liquid instruction to the fertilizer liquid pump according to the water-fertilizer solution preparation scheme, the controller also includes the following steps:

[0115] Step S300: The controller sends a first water supply adjustment instruction to the clean water pump and a first fertilizer liquid adjustment instruction to the fertilizer liquid pump according to the acquired real-time mixed fertilizer liquid data, until the mixed fertilizer liquid data meets the preset fertilizer liquid formula.

[0116] Specifically, the controller sends a first water supply adjustment instruction to the clean water pump according to the real-time mixed fertilizer liquid data obtained, and adjusts the water output and water output time of the clean water pump; at the same time, the controller sends a first fertilizer liquid adjustment instruction to the fertilizer liquid pump according to the real-time fertilizer liquid data obtained, so as to adjust the liquid output and liquid output time of the fertilizer liquid pump, and adjust the real-time mixed fertilizer liquid EC value, mixed fertilizer liquid pH value and mixed fertilizer liquid effective nitrogen value in the fertilizer liquid mixing pipeline until they are the same as the irrigation liquid effective nitrogen value, irrigation liquid EC value and irrigation liquid pH value in the preset fertilizer liquid formula, and the required mixed fertilizer liquid is obtained by the cooperation of the clean water pump and the fertilizer liquid pump. Then, the controller controls the irrigation device to inject the prepared required mixed fertilizer liquid into the corresponding irrigation area to complete automatic irrigation.

[0117] With the development of electrochemical, electromagnetic, laser and spectral technologies, more and more new technologies are being applied to rapid fertilizer detection. Among them, near-infrared spectroscopy technology is widely used in fertilizer detection and analysis due to its rich molecular structure information. For example, the U.S. Department of Agriculture Beltsville Agricultural Research Center (USDA-ARS) has achieved good research results in the field of rapid detection methods and advanced sensor technology for soil environmental pollution based on mid-infrared diffuse reflectance spectroscopy (MIRS) and near-infrared spectroscopy (NIRS); the Australian Precision Agriculture Research Center has achieved a relatively reliable prediction model for rapid detection of soil nitrate nitrogen spectra. China Agricultural University used near-infrared spectroscopy technology to establish a rapid prediction model for total nitrogen and alkaline nitrogen in air-dried soil with particle sizes of 2mm and 0.15mm. A study by Chengdu University of Technology found that near-infrared spectroscopy has a good correlation with total nitrogen and alkaline nitrogen in soil.

[0118] Although domestic and foreign experts and scholars have achieved a lot of research results in the field of soil spectral detection, there are still some problems in the field of rapid matrix detection, mainly as follows: (1) The impact of fertilizer migration and transformation on the matrix rapid detection model has not been fully explored, resulting in the adaptability of the model; (2) The problem of non-destructive rapid extraction of on-site matrix sample spectral information has not been fully solved; (3) The influence of matrix and soil on the detection model has not yet been fully explored. In addition, there are few reports on the establishment of on-site rapid detection of fertilizer content and fertilizer concentration in the matrix environment, considering the adsorption characteristics of the matrix and conducting water-fertilizer integrated precise quantitative irrigation and fertilization according to the crop cultivation environment. In the embodiment of the present application, a matrix rapid detection model can be established based on near-infrared spectroscopy detection technology, and the effective nitrogen content data in the matrix can be determined according to the on-site detection data of matrix effective nitrogen, and the amount of nitrogen fertilizer to be added in the matrix can be determined according to the adsorption characteristics and migration and transformation rules of the matrix of the matrix, and then the preset fertilizer solution formula is determined to avoid excessive fertilization and improve the utilization rate of nitrogen fertilizer.

[0119] In one embodiment, taking the precise fertilizer distribution process of coconut husk substrate as an example, Fig.11As shown, according to the on-site detection data of effective nitrogen in coconut bran matrix, near-infrared spectroscopy detection technology is used, and near-infrared spectroscopy data of coconut bran matrix is ​​collected by reflection mode, and an on-site rapid spectral accurate prediction model of effective nitrogen content is established, and according to the obtained information data of effective nitrogen content in coconut bran matrix and the adsorption characteristics and migration and transformation law of nitrogen in coconut bran matrix, the amount of nitrogen fertilizer to be added in coconut bran matrix is ​​determined, and the preset fertilizer liquid formula is determined. According to the preset fertilizer liquid formula and the obtained real-time mixed fertilizer liquid data, the controller sends a first water supply adjustment instruction to the clean water pump, and sends a first fertilizer liquid adjustment instruction to the fertilizer liquid pump to adjust the mixing ratio of each basic fertilizer liquid and clean water in the mixing pipeline until the real-time mixed fertilizer liquid data is the same as the irrigation liquid effective nitrogen value, irrigation liquid EC value and irrigation liquid pH value in the preset fertilizer liquid formula, and the required mixed fertilizer liquid is obtained.

[0120] In one embodiment, if Fig.12 As shown, the steps include:

[0121] Step S400, when the controller confirms that the mixed fertilizer liquid data meets the preset fertilizer liquid formula, it performs a delayed waiting, and when the delayed waiting is completed, it confirms whether the mixed fertilizer liquid data after the delayed waiting meets the preset fertilizer liquid formula; if not, it sends a second water supply adjustment instruction to the clean water pump, and sends a second fertilizer liquid adjustment instruction to the corresponding fertilizer liquid pump.

[0122] Specifically, when confirming that the mixed fertilizer liquid data meets the preset fertilizer liquid formula, the controller performs a delay wait, and after the delay wait, confirms again whether the mixed fertilizer liquid data meets the preset fertilizer liquid formula to confirm that the current mixed fertilizer liquid meets the preset fertilizer liquid formula. If not, the controller sends a second water supply adjustment instruction to the clean water pump, which can be used to control the water output and water output time of the clean water pump; and sends a second fertilizer liquid adjustment instruction to the corresponding fertilizer liquid pump, thereby controlling the liquid output and liquid output time of the corresponding fertilizer liquid pump.

[0123] In the embodiment of the present application, by confirming twice whether the mixed fertilizer liquid data meets the preset fertilizer liquid formula, errors caused by insufficient mixing are avoided and the accuracy of fertilization and irrigation is improved.

[0124] In one embodiment, the control device further comprises a liquid level sensor disposed in the clean water tank;

[0125] The liquid level sensor is connected to the controller for communication; the liquid level sensor is used to obtain the real-time liquid level of the clean water tank;

[0126] like Fig.13 As shown, the controller sends an irrigation instruction to the irrigation device; the irrigation instruction is used to instruct the irrigation device to irrigate the mixed fertilizer solution prepared by the clean water pump and the fertilizer solution pump, and further includes the steps of:

[0127] Step S600: The controller confirms whether the real-time liquid level reaches the preset liquid level based on the acquired real-time liquid level; if not, a water inlet instruction is sent to the water inlet switch of the clean water tank; the water inlet instruction is used to turn on the water inlet switch.

[0128] Specifically, when the controller detects that the real-time liquid level does not meet the preset liquid level, it sends a water inlet command to the water inlet switch of the clean water tank to turn on the water inlet switch to fill the clean water tank with water, so as to ensure that the water supply device can normally and continuously provide water for irrigation and liquid preparation.

[0129] For example, the delay waiting time is set to 20 seconds. Fig.14 As shown, when the controller confirms that the mixed fertilizer liquid data meets the preset fertilizer liquid formula, it delays and waits for 20 seconds, and when the delay waiting is completed, it confirms whether the mixed fertilizer liquid data after the delay waiting meets the preset fertilizer liquid formula. If it meets, the controller sends an irrigation instruction to the irrigation device, and the irrigation device injects the prepared mixed fertilizer liquid into the corresponding irrigation area. If it does not meet, the controller sends a second water supply adjustment instruction to the clean water pump, which can be used to control the water output and water output time of the clean water pump; and sends a second fertilizer liquid adjustment instruction to the corresponding fertilizer liquid pump, so as to control the liquid output and liquid output time of the corresponding fertilizer liquid pump. Then, the controller monitors whether the liquid level reaches the preset liquid level through the liquid level sensor provided in the clean water tank. When it is detected that the real-time liquid level does not meet the preset liquid level, the controller sends a water inlet instruction to the water inlet switch of the clean water tank to turn on the water inlet switch to fill the clean water tank with water, so as to ensure that the water supply device can normally and continuously provide water for irrigation and liquid preparation.

[0130] It should be understood that although Figure 9-14 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, Figure 9-14 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0131] In one embodiment, Fig.15 As shown, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in Fig.15As shown. The computer device includes a processor, a memory, a network interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a water-fertilizer integrated system control method is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device housing, or an external keyboard, touchpad or mouse, etc.

[0132] Those skilled in the art will understand that Fig.15 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0133] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0134] The controller determines the water-fertilizer solution preparation scheme according to the preset fertilizer solution formula and the obtained mixed fertilizer solution data; the preset fertilizer solution formula includes the preset irrigation solution effective nitrogen value, irrigation solution EC value and irrigation solution pH value; the mixed fertilizer solution data includes the obtained mixed fertilizer solution EC value, mixed fertilizer solution pH value and mixed fertilizer solution effective nitrogen value;

[0135] The controller sends a first water supply instruction to the clean water pump and a first fertilizer liquid instruction to the fertilizer liquid pump according to the water fertilizer solution preparation plan; the first water supply instruction includes a water output amount and a water output time; the first fertilizer liquid instruction includes a liquid output amount and a liquid output time;

[0136] The controller sends an irrigation instruction to the irrigation device; the irrigation instruction is used to instruct the irrigation device to irrigate with the mixed fertilizer solution prepared by the clean water pump and the fertilizer solution pump.

[0137] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0138] The controller determines the water-fertilizer solution preparation scheme according to the preset fertilizer solution formula and the obtained mixed fertilizer solution data; the preset fertilizer solution formula includes the preset irrigation solution effective nitrogen value, irrigation solution EC value and irrigation solution pH value; the mixed fertilizer solution data includes the obtained mixed fertilizer solution EC value, mixed fertilizer solution pH value and mixed fertilizer solution effective nitrogen value;

[0139] The controller sends a first water supply instruction to the clean water pump and a first fertilizer liquid instruction to the fertilizer liquid pump according to the water fertilizer solution preparation plan; the first water supply instruction includes a water output amount and a water output time; the first fertilizer liquid instruction includes a liquid output amount and a liquid output time;

[0140] The controller sends an irrigation instruction to the irrigation device; the irrigation instruction is used to instruct the irrigation device to irrigate with the mixed fertilizer solution prepared by the clean water pump and the fertilizer solution pump.

[0141] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in the present application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus dynamic random access memory (Rambus DRAM, referred to as RDRAM) and interface dynamic random access memory (DRDRAM).

[0142] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0143] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A water-fertilizer integrated system, characterized in that: include: A fertilizer liquid preparation device, comprising a fertilizer liquid mixing pipeline, various fertilizer liquid tanks and fertilizer liquid pumps corresponding to the fertilizer liquid tanks; The liquid outlet of the fertilizer liquid tank is connected to the corresponding liquid inlet of the fertilizer liquid pump; the liquid outlet of the fertilizer liquid pump is connected to the liquid inlet of the fertilizer liquid mixing pipeline; A control device, comprising a controller, a mixed fertilizer liquid monitor and a mixed fertilizer liquid effective nitrogen monitor; the controller is respectively connected to the mixed fertilizer liquid monitor and the mixed fertilizer liquid effective nitrogen monitor in communication; the mixed fertilizer liquid monitor is arranged in the fertilizer liquid mixing pipeline; the mixed fertilizer liquid effective nitrogen monitor is used to obtain the effective nitrogen value of the mixed fertilizer liquid in the fertilizer liquid mixing pipeline; the controller is electrically connected to the liquid outlet control end of the fertilizer liquid pump; the mixed fertilizer liquid monitor comprises an EC sensor and a pH sensor arranged in the fertilizer liquid mixing pipeline; the controller is respectively connected to the EC sensor and the pH sensor in communication; the EC sensor is used to obtain the real-time conductivity of the mixed fertilizer liquid in the fertilizer liquid mixing pipeline; the pH sensor is used to obtain the real-time pH value of the mixed fertilizer liquid; the pH sensor is a MIK-PH160pH sensor; the EC sensor is a MIK-TDS210EC sensor; Water supply device; The water outlet of the water supply device is connected to the water inlet of the fertilizer liquid mixing pipeline; the water outlet control end of the water supply device is electrically connected to the controller; the water supply device includes a clean water tank and a clean water pump; the water outlet of the clean water tank is connected to the water inlet of the clean water pump; the water outlet of the clean water pump is connected to the water inlet of the fertilizer liquid mixing pipeline; the water outlet control end of the clean water pump is electrically connected to the controller; the water supply device also includes a filter, and the filter is arranged between the clean water tank and the clean water pump; The irrigation device comprises a main irrigation pipe and branch irrigation pipes; the liquid inlet of the main irrigation pipe is connected to the fertilizer liquid outlet of the fertilizer liquid mixing pipe; the liquid outlet of the main irrigation pipe is respectively connected to each branch irrigation pipe; the branch irrigation pipes are used to be connected to the corresponding irrigation area; The control device further includes a liquid level sensor disposed in the clean water tank, the liquid level sensor is used to monitor the real-time liquid level in the clean water tank in real time, and send the acquired real-time liquid level to the controller; the irrigation device further includes a water inlet pump, the water outlet of the water inlet pump is connected to the water inlet of the clean water pump; the control end of the water inlet pump and the liquid level sensor are both in communication connection with the controller; when the real-time liquid level of the clean water tank is lower than the set value, the controller starts the water inlet pump to add water to the clean water tank; when the real-time liquid level in the clean water tank reaches or exceeds the set value, the water inlet pump is controlled to stop working, and the liquid level sensor is a MIK-P260 liquid level sensor; The control device also includes an environment monitor, which includes a temperature sensor and a humidity sensor arranged in each irrigation area; the controller is respectively connected to the temperature sensor and the humidity sensor for communication; the temperature sensor includes a soil temperature sensor, an indoor temperature sensor and an outdoor temperature sensor; the humidity sensor includes an outdoor humidity sensor and an indoor humidity sensor; The controller is used to: Determine the water-fertilizer solution preparation plan based on the preset fertilizer solution formula and the obtained mixed fertilizer solution data; The preset fertilizer liquid formula includes a preset irrigation liquid effective nitrogen value, an irrigation liquid EC value, and an irrigation liquid pH value; the mixed fertilizer liquid data includes the obtained mixed fertilizer liquid EC value, the mixed fertilizer liquid pH value, and the mixed fertilizer liquid effective nitrogen value; According to the water-fertilizer solution preparation scheme, a first water supply instruction is sent to the clean water pump, and a first fertilizer liquid instruction is sent to the fertilizer liquid pump; the first water supply instruction includes a water output amount and a water output time; the first fertilizer liquid instruction includes a liquid output amount and a liquid output time; Sending an irrigation instruction to the irrigation device; the irrigation instruction is used to instruct the irrigation device to irrigate with the mixed fertilizer solution prepared by the clean water pump and the fertilizer solution pump; After the controller sends a first water supply instruction to the clean water pump and a first fertilizer liquid instruction to the fertilizer liquid pump according to the water-fertilizer solution preparation scheme, the controller further includes the following steps: According to the real-time mixed fertilizer liquid data obtained, a first water supply adjustment instruction is sent to the clean water pump, and a first fertilizer liquid adjustment instruction is sent to the fertilizer liquid pump, until the mixed fertilizer liquid data satisfies the preset fertilizer liquid formula; When confirming that the mixed fertilizer liquid data meets the preset fertilizer liquid formula, delay waiting is performed, and when the delay waiting is completed, confirm whether the mixed fertilizer liquid data after the delay waiting meets the preset fertilizer liquid formula; if not, send a second water supply adjustment instruction to the clean water pump, and send a second fertilizer liquid adjustment instruction to the corresponding fertilizer liquid pump; The control device also includes a matrix effective nitrogen monitor, which is communicatively connected to the controller; the matrix effective nitrogen monitor is used to obtain the matrix effective nitrogen content by using visible near-infrared spectroscopy diffuse reflectance analysis technology, combined with multiple chemometric methods of alkaline hydrolysis diffusion method, by establishing a near-infrared spectrum accurate prediction model of the effective nitrogen content in the matrix environment, and determining the preset fertilizer solution formula according to the obtained matrix effective nitrogen content; The matrix effective nitrogen monitor comprises a conveying system, a sample pretreatment system, a detection system and a control system, wherein the sample pretreatment system comprises a driving motor, a crushing chamber, a screen, a heating plate and a heat insulation plate, the crushing chamber consists of an upper part and a lower part of the crushing chamber, the upper part and the lower part of the crushing chamber are connected by threads to form a closed crushing space; the sample pretreatment system controls the sample drying time and crushing time through the working time of the driving motor and the heating plate; wherein the detection system comprises a near-infrared spectrometer, two 35w halogen tungsten lamps, an optical fiber, an optical fiber probe, a ball screw slide, a sample chamber, a computer control unit and a dark box, the sampling interval of the spectral data of the detection system is 3.4nm, the signal-to-noise ratio is 6000:1, the integration time, smoothness and scanning average times are set to 3ms, 5 and 3 respectively; The detection system is used to change the distance between the optical fiber probe and the sample to be detected by adjusting the adjustment bolt on the fixed support frame of the optical fiber probe, and set the distance between the optical fiber probe and the surface of the sample to be detected to 13 mm. Before detecting the sample to be detected, turn on the halogen tungsten lamp for preheating for 30 minutes, and then collect spectral data after the light source is stable. When the CCD temperature of the near-infrared spectrometer reaches the set value and the light source is stable, a polytetrafluoroethylene standard white board is used for blackboard reference acquisition; wherein, the spectral data acquisition mode is set to reflection measurement through the control button on the control panel, and the two halogen tungsten lamp light sources under the detection platform are turned on. The halogen tungsten light is irradiated to the surface of the sample to be detected in the quartz sample chamber through the light transmission hole on the detection platform, and the light signal reflected by the surface of the sample to be detected enters the optical fiber probe and is finally received by the near-infrared spectrometer.

2. The water-fertilizer integrated system according to claim 1, characterized in that: The controller includes a control component and a processor; The control component is electrically connected to the processor; the control component can be used to obtain a preset fertilizer liquid formula; The processor is respectively connected to the mixed fertilizer liquid monitor and the mixed fertilizer liquid effective nitrogen monitor for communication; the processor is respectively connected to the water outlet control end of the water supply device and the liquid outlet control end of the fertilizer liquid pump for electrical communication.

3. A water-fertilizer integrated system control method, characterized in that: Applicable to the water-fertilizer integrated system as claimed in claim 1 or 2; The water-fertilizer integrated system comprises: The fertilizer liquid preparation device comprises a fertilizer liquid mixing pipeline, fertilizer liquid tanks and a fertilizer liquid pump corresponding to the fertilizer liquid tank; the liquid outlet of the fertilizer liquid tank is connected to the corresponding liquid inlet of the fertilizer liquid pump; the liquid outlet of the fertilizer liquid pump is connected to the liquid inlet of the fertilizer liquid mixing pipeline; A water supply device; the water supply device comprises a clean water tank and a clean water pump; the water outlet of the clean water tank is connected to the water inlet of the clean water pump; the water outlet of the clean water pump is connected to the water inlet of the fertilizer liquid mixing pipeline; A control device, comprising a controller, a mixed fertilizer liquid monitor and a mixed fertilizer liquid effective nitrogen monitor; the controller is respectively connected to the mixed fertilizer liquid monitor and the mixed fertilizer liquid effective nitrogen monitor in communication; the mixed fertilizer liquid monitor is arranged in the fertilizer liquid mixing pipeline; the mixed fertilizer liquid monitor is used to obtain the EC value and the pH value of the mixed fertilizer liquid in the fertilizer liquid mixing pipeline; the mixed fertilizer liquid effective nitrogen monitor is used to obtain the effective nitrogen value of the mixed fertilizer liquid in the fertilizer liquid mixing pipeline; the controller is respectively electrically connected to the liquid outlet control end of the fertilizer liquid pump and the water outlet control end of the clean water pump; The irrigation device comprises a main irrigation pipeline, branch irrigation pipelines and electromagnetic valves corresponding to the branch irrigation pipelines; the liquid inlet of the main irrigation pipeline is connected to the fertilizer liquid outlet of the fertilizer liquid mixing pipeline; the liquid outlet of the main irrigation pipeline is connected to the corresponding branch irrigation pipeline through the electromagnetic valve; the branch irrigation pipeline is used to be connected to the corresponding irrigation area; The water-fertilizer integrated system control method comprises: According to the matrix effective nitrogen monitor, near infrared spectroscopy detection technology is used to collect matrix near infrared spectroscopy data in a reflectance manner; Establish an on-site rapid spectral accurate prediction model for effective nitrogen content, and determine the amount of nitrogen fertilizer that needs to be added to the matrix and the preset fertilizer solution formula based on the obtained matrix effective nitrogen content information data and the matrix's nitrogen adsorption characteristics and migration and transformation rules; The controller determines a water-fertilizer solution preparation scheme according to a preset fertilizer solution formula and the obtained mixed fertilizer solution data; the preset fertilizer solution formula includes a preset irrigation solution effective nitrogen value, an irrigation solution EC value, and an irrigation solution pH value; the mixed fertilizer solution data includes the obtained mixed fertilizer solution EC value, the mixed fertilizer solution pH value, and the mixed fertilizer solution effective nitrogen value; The controller sends a first water supply instruction to the clean water pump and a first fertilizer liquid instruction to the fertilizer liquid pump according to the water fertilizer solution preparation scheme; the first water supply instruction includes a water output amount and a water output time; the first fertilizer liquid instruction includes a liquid output amount and a liquid output time; The controller sends an irrigation instruction to the irrigation device; the irrigation instruction is used to instruct the irrigation device to irrigate with the mixed fertilizer solution prepared by the clean water pump and the fertilizer solution pump; After the controller sends a first water supply instruction to the clean water pump and a first fertilizer liquid instruction to the fertilizer liquid pump according to the water-fertilizer solution preparation scheme, the controller further includes the following steps: The controller sends a first water supply adjustment instruction to the clean water pump and a first fertilizer liquid adjustment instruction to the fertilizer liquid pump according to the acquired real-time mixed fertilizer liquid data, until the mixed fertilizer liquid data satisfies the preset fertilizer liquid formula; When the controller confirms that the mixed fertilizer liquid data satisfies the preset fertilizer liquid formula, it performs a delayed waiting, and when the delayed waiting is completed, it confirms whether the mixed fertilizer liquid data after the delayed waiting satisfies the preset fertilizer liquid formula; if not, it sends a second water supply adjustment instruction to the clean water pump, and sends a second fertilizer liquid adjustment instruction to the corresponding fertilizer liquid pump.

4. The water-fertilizer integrated system control method according to claim 3, characterized in that: The control device also includes a liquid level sensor disposed in the clean water tank; The liquid level sensor is in communication with the controller; the liquid level sensor is used to obtain the real-time liquid level of the clean water tank; After the step in which the controller sends an irrigation instruction to the irrigation device; the irrigation instruction is used to instruct the irrigation device to irrigate with the mixed fertilizer solution prepared by the clean water pump and the fertilizer solution pump, the step further includes: The controller confirms whether the real-time liquid level has reached the preset liquid level based on the acquired real-time liquid level; if not, a water inlet instruction is sent to the water inlet switch of the clean water tank; the water inlet instruction is used to turn on the water inlet switch.

5. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the water-fertilizer integrated system control method according to any one of claims 3 to 4 are implemented.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the water-fertilizer integrated system control method according to any one of claims 3 to 4 are implemented.

Images