Fertilizer preparation methods, automatic fertigation machines, and irrigation systems

Abstract

This application provides a fertilizer preparation method, an automatic fertigation machine, and an irrigation system, relating to the agricultural field. The fertilizer preparation method is applied to an automatic fertigation machine, which includes: an inlet pipe, multiple fertilizer suction pipes, a fertilizer mixing pipe, and an outlet pipe. Each fertilizer suction pipe has a suction port and a proportional valve. The suction port is used to draw in source fertilizer, and the proportional valve is used to control the flow rate of the source fertilizer in the suction pipe. The solution flowing into the inlet pipe mixes with the source fertilizer flowing into the multiple fertilizer suction pipes in the fertilizer mixing pipe, and is output through the outlet pipe. The preparation method includes: acquiring target parameters of the fertilizer; controlling the opening ratio of the proportional valve in the multiple fertilizer suction pipes; detecting real-time parameters of the fertilizer in the fertilizer mixing pipe, wherein the fertilizer is a mixture of source fertilizer and the solution flowing into the inlet pipe; and adjusting the opening ratio of the proportional valve according to the real-time parameters until the difference between the real-time parameters and the target parameters of the fertilizer meets a preset requirement. This solution can achieve precise fertilization.

Description

Technical Field

[0001] This application relates to the agricultural field, and more specifically, to methods for preparing fertilizers, automatic fertigation machines, and irrigation systems. Background Technology

[0002] Fertilizer formulation is a crucial step in agricultural production, directly impacting crop growth and yield. A well-formulated fertilizer provides plants with the necessary nutrients, promoting healthy growth and improving both yield and quality. In modern agriculture, automated fertigation systems can be used to formulate fertilizers, enabling fertilization and irrigation. Specifically, these systems mix raw fertilizers with water to create a compound fertilizer. During this process, the supply of water and nutrients can be precisely controlled, creating an optimal growing environment for the crops.

[0003] Currently, with the rapid development of society, people have increasingly higher requirements for the quality and yield of crops. Therefore, how to achieve precise fertilization and provide fertilizers with appropriate ratios to improve the quality and yield of crops is a technical problem that urgently needs to be solved. Summary of the Invention

[0004] This application provides a method for preparing fertilizer, an automatic fertigation machine, and an irrigation system that enables precise fertilization.

[0005] Firstly, a fertilizer preparation method is provided, applied to an automatic fertigation machine. The automatic fertigation machine includes: an inlet pipe, multiple fertilizer suction pipes, a fertilizer mixing pipe, and an outlet pipe. Each of the multiple fertilizer suction pipes has a suction port and a proportional valve. The suction port is used to draw in source fertilizer, and the proportional valve is used to control the flow rate of the source fertilizer in the suction pipe. The solution flowing into the inlet pipe mixes with the source fertilizer flowing into the multiple fertilizer suction pipes in the fertilizer mixing pipe, and is output through the outlet pipe. The preparation method includes: acquiring target parameters of the fertilizer; controlling the opening ratio of the proportional valve in the multiple fertilizer suction pipes to control the flow rate of the source fertilizer; detecting real-time parameters of the fertilizer in the fertilizer mixing pipe, wherein the fertilizer is a mixture of source fertilizer and solution flowing into the inlet pipe; and adjusting the opening ratio of the proportional valve according to the real-time parameters until the difference between the real-time parameters and the target parameters of the fertilizer meets a preset requirement.

[0006] The technical solution of this application embodiment involves installing a proportional valve in the multi-channel fertilizer suction pipeline of an automatic fertigation machine. By controlling the opening ratio of the proportional valve, the proportion of each source fertilizer in the fertilizer mixture is controlled, making the fertilizer preparation process more precise. Furthermore, during fertilizer preparation, the opening ratio of the proportional valve can be adjusted according to the real-time parameters of the fertilizer in the mixing pipeline, ensuring that the difference between the real-time fertilizer parameters and the target parameters meets preset requirements, thus achieving precise fertilizer preparation and realizing the goal of precision fertilization.

[0007] In some possible implementations, controlling the opening ratio of the proportional valve in the multi-channel fertilizer suction pipeline to control the flow rate of the source fertilizer includes: initially controlling the initial opening ratio of the proportional valve in the multi-channel fertilizer suction pipeline to control the initial flow rate of the source fertilizer, wherein the initial opening ratio is less than or equal to a target value, such that the initial flow rate is less than or equal to 15% of the maximum flow rate.

[0008] By using the technical solution of this embodiment, the initial opening ratio of the proportional valve is set to be relatively small, so the initial flow rate of the source fertilizer in the fertilizer suction pipe is also relatively small, providing sufficient margin for subsequent adjustments and preventing the initial flow rate of the source fertilizer from being too large, which would cause the fertilizer concentration to be too high. This prevents high-concentration fertilizer from causing irreversible damage to crops and improves the fertilization effect.

[0009] In some possible implementations, adjusting the opening ratio of the proportional valve according to real-time parameters includes: determining the current adjustment direction of the opening ratio of the proportional valve based on the difference between the current real-time parameters and the target parameters.

[0010] In some possible implementations, determining the current adjustment direction of the proportional valve opening ratio based on the difference between the current real-time parameter and the target parameter includes: increasing the opening ratio of the proportional valve when the current real-time parameter is less than the target parameter; or decreasing the opening ratio of the proportional valve when the current real-time parameter is greater than the target parameter.

[0011] Through the technical solution of this implementation, the controller can quickly determine the adjustment method of the proportional valve with high accuracy.

[0012] In some possible implementations, the above-mentioned adjustment of the opening ratio of the proportional valve based on real-time parameters includes: determining the current adjustment value of the opening ratio of the proportional valve based on the difference between the current real-time parameter and the target parameter, and the difference between the previous real-time parameter and the target parameter.

[0013] In some possible implementations, determining the current adjustment value of the opening ratio of the proportional valve based on the difference between the current real-time parameter and the target parameter, and the difference between the previous real-time parameter and the target parameter, includes: determining that the current adjustment value of the opening ratio of the proportional valve is greater than or equal to the previous adjustment value when both the difference between the current real-time parameter and the target parameter and the difference between the previous real-time parameter and the target parameter are greater than 0; or determining that the current adjustment value of the opening ratio of the proportional valve is less than or equal to the previous adjustment value when both the difference between the current real-time parameter and the target parameter and the difference between the previous real-time parameter and the target parameter are less than 0; or determining that the current adjustment value of the opening ratio of the proportional valve is less than the previous adjustment value when one of the differences between the current real-time parameter and the target parameter and the difference between the previous real-time parameter and the target parameter is greater than 0 and the other is less than 0.

[0014] The technical solution of this implementation method can determine the adjustment value of the opening ratio of the proportional valve based on the difference between the real-time parameters generated by two consecutive adjustments and the target parameters, thereby improving the adjustment accuracy of the proportional valve and thus improving the fertilizer preparation accuracy.

[0015] In some possible implementations, the above-mentioned adjustment of the opening ratio of the proportional valve according to real-time parameters includes: adjusting the opening ratio of multiple proportional valves in the multi-channel fertilizer suction pipeline in the same manner according to real-time parameters.

[0016] The technical solution of this implementation method allows for a relatively simple control logic for the controller, ensuring fertilizer preparation accuracy while also increasing the speed of fertilizer preparation.

[0017] In some possible implementations, the above-mentioned adjustment of the opening ratio of the proportional valve according to real-time parameters until the difference between the real-time parameters of the fertilizer and the target parameters meets the preset requirements includes: adjusting the opening ratio of the proportional valve according to real-time parameters until the difference between the real-time parameters of the fertilizer and the target parameters is less than or equal to a preset threshold.

[0018] By incorporating a preset threshold as the termination condition for adjusting EC values ​​or other types of parameters, the technical solution of this implementation method helps to improve the adjustment speed and prevent the adjustment time process from affecting the on-site irrigation and fertilization progress.

[0019] In some possible implementations, before controlling the opening ratio of the proportional valve in the multi-channel fertilizer suction pipeline, the configuration method further includes: detecting the parameters of the source fertilizer in the multi-channel fertilizer suction pipeline; and determining the configuration of the fertilizer in the mixed fertilizer pipeline based on the parameters of the source fertilizer and the target parameters.

[0020] The technical solution of this implementation method can first detect the parameters of the source fertilizer in the multi-channel fertilizer suction pipeline, and then perform subsequent steps based on the source fertilizer parameters and target parameters, which can reduce the risk of ineffective fertilizer configuration and improve the effectiveness of fertilizer configuration.

[0021] In some possible implementations, the target parameters and real-time parameters include: EC value and / or pH value.

[0022] In some possible implementations, the multi-channel fertilizer suction pipe is used to draw in both acidic and alkaline fertilizer sources, and the target and real-time parameters include both EC value and pH value.

[0023] In this embodiment, the source fertilizer corresponding to the multi-channel fertilizer suction pipeline includes both acidic and alkaline source fertilizers, thus flexibly adapting to various requirements. In this case, the target parameters and real-time parameters can simultaneously include EC value and pH value. During the same adjustment process of the proportional valve, multiple parameters of the fertilizer can be configured at the same time, which has high configuration efficiency and reduces the configuration time required for fertilizer.

[0024] Secondly, an automatic fertilizer and water machine is provided, comprising: a multi-channel fertilizer suction pipe, each channel having a fertilizer suction port and a proportional valve, the fertilizer suction port for sucking up source fertilizer, and the proportional valve for controlling the flow rate of source fertilizer in the fertilizer suction pipe; a water inlet pipe for introducing a solution; a fertilizer mixing pipe connected to the multi-channel fertilizer suction pipe and the water inlet pipe for mixing the source fertilizer introduced through the multi-channel fertilizer suction pipe and the solution introduced through the water inlet pipe; a water outlet pipe connected to the fertilizer mixing pipe for outputting the mixed fertilizer; a detector installed in the fertilizer mixing pipe for detecting real-time parameters of the fertilizer in the fertilizer mixing pipe; and a controller connected to the proportional valve in the multi-channel fertilizer suction pipe for controlling the opening ratio of the proportional valve to control the flow rate of source fertilizer. The controller is also used to acquire target parameters of the fertilizer and adjust the opening ratio of the proportional valve according to the real-time parameters until the difference between the real-time parameters of the fertilizer and the target parameters meets a preset requirement.

[0025] Thirdly, an irrigation system is provided, comprising: an irrigation channel, and an automatic fertigation machine provided in the second aspect, wherein an inlet pipe and an outlet pipe of the automatic fertigation machine are connected to the irrigation channel for fertilizing farmland through the irrigation channel. Attached Figure Description

[0026] Figure 1 This is a schematic structural diagram of a farmland irrigation system provided in an embodiment of this application.

[0027] Figure 2 This is a schematic structural diagram of an automatic water and fertilizer machine provided in an embodiment of this application.

[0028] Figure 3 This is a schematic flowchart illustrating a fertilizer preparation method provided in an embodiment of this application.

[0029] Figure 4 This is a schematic flowchart of another fertilizer preparation method provided in the embodiments of this application.

[0030] Figure 5 This is a schematic flowchart of another fertilizer preparation method provided in the embodiments of this application.

[0031] Figure 6 This is a schematic structural block diagram of an automatic water and fertilizer machine provided in an embodiment of this application.

[0032] Figure 7 This is a schematic diagram of the structure of an automatic water and fertilizer machine provided in an embodiment of this application.

[0033] Figure 8 This is a schematic structural block diagram of an irrigation system provided in an embodiment of this application. Detailed Implementation

[0034] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0035] This application relates to farmland irrigation systems. Optionally, the farmland irrigation system can be an integrated water and fertilizer system, that is, the irrigation system may include a system for adding chemical substances such as fertilizers. For example, the farmland irrigation system may be equipped with automatic water and fertilizer machines. Optionally, the farmland irrigation system of this application can be applied to open field environments, or it can also be applied to greenhouse environments.

[0036] Figure 1 A schematic structural diagram of a farmland irrigation system 100 applicable to embodiments of this application is shown.

[0037] like Figure 1 As shown, the farmland irrigation system 100 may include: irrigation channels, automatic water and fertilizer machines, pumps, and water sources, etc.

[0038] Specifically, the starting point of an irrigation system is a water source, which may be a river, lake, groundwater, rainwater harvesting system, or artificial reservoir. The water source needs to be able to provide sufficient water to meet irrigation needs.

[0039] Pumps can be used as water intake facilities to draw water from water sources and transport it to irrigation systems. In addition to pumps, water intake facilities can also include sluice gates, aqueducts, etc., to assist in irrigation water intake.

[0040] Irrigation channels serve as conduits for transporting water or fertilizer to farmland. As an example, when an irrigation system is used for multiple farmlands, the irrigation channel can form multiple irrigation branches to simultaneously deliver water or fertilizer to multiple farmlands. Where the irrigation channel spans a long distance, it can include main pipelines, branch pipelines, etc., thus forming an irrigation network for the irrigation system.

[0041] Automatic fertigation machines, as fertilizer addition systems in irrigation systems, can simultaneously deliver fertilizer into the irrigation channels, thereby ensuring that water and nutrients are delivered to the farmland at the same time. The irrigation system can achieve irrigation and fertilization simultaneously.

[0042] Optionally, such as Figure 1 As shown, the automatic fertigation machine can simultaneously absorb multiple fertilizer sources. After being mixed inside the machine, the fertilizers are then introduced into the irrigation channel to achieve the purpose of fertilization.

[0043] Alternatively, a water source can be connected to the source fertilizer via pipes or other components to replenish the moisture in the source fertilizer.

[0044] Understandably, irrigation systems include, in addition to, Figure 1In addition to the facilities shown, the irrigation system may further include other facilities. For example, the irrigation system may also include irrigation components installed in the farmland, which can be used to implement various irrigation methods such as drip irrigation, sprinkler irrigation, and subsurface irrigation. As another example, the irrigation system may also include a control system, including sensors, valves, controllers, and computers. These systems can automatically adjust irrigation time and water volume based on soil moisture, weather conditions, and crop water requirement models.

[0045] Figure 2 A schematic structural diagram of an automatic water and fertilizer machine 200 according to an embodiment of this application is shown. Optionally, the automatic water and fertilizer machine 200 can be... Figure 1 The automatic water and fertilizer machine in the irrigation system shown.

[0046] like Figure 2 As shown, the automatic fertigation machine 200 includes: an inlet pipe 210, a multi-channel fertilizer suction pipe 220, a fertilizer mixing pipe 230, and an outlet pipe 240. Each of the multi-channel fertilizer suction pipes 220 has a fertilizer suction port and a proportional valve 221. The fertilizer suction port is used to draw in the source fertilizer, and the proportional valve 221 is used to control the flow rate of the source fertilizer in the fertilizer suction pipe 220. The solution flowing into the inlet pipe 210 mixes with the source fertilizer flowing into the multi-channel fertilizer suction pipes 220 in the fertilizer mixing pipe 230, and is then output through the outlet pipe 240.

[0047] Optionally, each of the multiple fertilizer suction pipelines 220 is equipped with a proportional valve 221. This proportional valve 221 can be of various types and is designed to control the flow rate of the source fertilizer in the fertilizer suction pipeline 220. As an example, the proportional valve 221 can be an electric ball valve. In an electric ball valve, the opening ratio of the valve can be controlled by controlling the rotation of the ball in the valve, thereby controlling the flow rate in the pipeline. Besides electric ball valves, the proportional valve 221 can also be other types of valves such as butterfly valves, diaphragm valves, and angle seat valves; this embodiment does not specifically limit its application to these types.

[0048] Specifically, each of the multiple fertilizer suction pipes 220 can have one type of source fertilizer introduced into its suction port. The source fertilizers introduced into the multiple fertilizer suction pipes 220 can be the same or different, and the specific type of source fertilizer can be selected according to actual fertilization needs. As an example, Figure 2 The illustration shows four fertilizer suction pipes 220. In other examples, the automatic water and fertilizer machine 200 may also include other numbers of fertilizer suction pipes 220, which is not specifically limited in this application embodiment.

[0049] In some embodiments, the water inlet pipe 210 is connected to a water source, that is, the solution flowing into the water inlet pipe 210 is water.

[0050] In other embodiments, the water inlet pipe 210 may be connected to the irrigation channel in the irrigation system, and the solution flowing through the water inlet pipe 210 may be water or a mixed water-fertilizer solution.

[0051] The fertilizer mixing pipe 230 is connected to the water inlet pipe 210 and the multi-channel fertilizer suction pipe 220, and is used to mix the solution flowing into the water inlet pipe 210 with the source fertilizer flowing into the multi-channel fertilizer suction pipe 220. As an example, Figure 2 The mixed fertilizer pipeline 230 includes multiple branch pipelines and a mixed main pipeline. The multiple branch pipelines are respectively connected to the multiple fertilizer suction pipeline 220 and the water inlet pipeline 210, and all the multiple branch pipelines converge to the mixed main pipeline.

[0052] The fertilizer mixing pipe 230 is also connected to the water outlet pipe 240, through which the mixed fertilizer solution can flow out. Optionally, the water outlet pipe 240 can be connected to the irrigation channel in the irrigation system, and after passing through the water outlet pipe 240, the fertilizer solution is supplied to the crops in the farmland through the irrigation channel.

[0053] like Figure 2 As shown, in addition to the types of pipes described above, the automatic fertigation machine 200 may also include a controller 250. This controller 250 can control multiple components within the fertigation machine. For example, the controller 250 can control the opening ratio of the proportional valve 221 in the fertilizer suction pipe 220, thereby controlling the flow rate of the source fertilizer in the fertilizer suction pipe 220. Optionally, a valve may be installed at the inlet of the water inlet pipe 210, and the controller 250 can also control the valve at the water inlet pipe 210 to control the flow of solution into the water inlet pipe 210.

[0054] Optionally, the automatic fertigation machine 200 may also include a detector 260, such as a sensor, flow meter, etc. As an example, Figure 2 The detector 260 is installed at the fertilizer mixing pipe 230. The detector 260 can be used to test various parameters of the fertilizer solution in the fertilizer mixing pipe 230, such as electrical conductivity (EC), potential of hydrogen (PH), etc.

[0055] Understandably, the automatic water and fertilizer machine 200 includes, in addition to Figure 2 In addition to the controller 250, detector 260, and various types of pipes shown, other auxiliary components may also be included, such as pumps, valves, communication components, display components, etc.

[0056] Figure 3 A schematic flowchart of a fertilizer preparation method 300 provided in an embodiment of this application is shown. This preparation method 300 can be applied to an automatic water and fertilizer machine, such as the one described above. Figure 2 The automatic water and fertilizer machine 200 shown.

[0057] like Figure 3 As shown, the fertilizer preparation method 300 includes the following steps.

[0058] S310: Obtain the target parameters for the fertilizer.

[0059] S320: Controls the opening ratio of the proportional valve in the multi-channel fertilizer suction pipeline to control the flow rate of the source fertilizer.

[0060] S330: Detects real-time parameters of fertilizer in the mixed fertilizer pipeline. The fertilizer is a mixture of source fertilizer and solution introduced into the water inlet pipeline.

[0061] S340: Adjust the opening ratio of the proportional valve according to the real-time parameters until the difference between the real-time parameters of the fertilizer and the target parameters meets the preset requirements.

[0062] Optionally, this configuration method 300 can be executed in the controller of an automatic fertigation machine, such as the one described above. Figure 2 The controller 250 shown. In other words, the controller in the automatic water and fertilizer machine acts as the execution subject, executing the configuration method 300 of this application embodiment. As an example, the controller includes, but is not limited to: Programmable Logic Controller (PLC), Programmable Automation Controller (PAC), embedded controller, etc. This application embodiment does not limit the specific type of controller.

[0063] In step S310, the controller acquires the target parameters of the fertilizer, which are relevant parameters of the fertilizer used for fertilizing farmland crops. These target parameters may include at least one of the following: concentration, EC value, pH value, etc. The target parameters can be determined based on the specific needs of the farmland to be fertilized and the crops.

[0064] In some implementations, sensors for detecting farmland and crops are installed in the farmland, and a communication device is also installed in the farmland. This communication device can send the farmland and crop information detected by the sensors to a controller, which determines target parameters based on this information.

[0065] Alternatively, in other implementations, farmers can determine the target parameters based on their actual needs and input these target parameters into the automatic water and fertilizer machine through a human-machine interface, thereby enabling the controller to acquire the target parameters.

[0066] In step S320, the controller can control the opening ratio of the proportional valves in the multi-channel fertilizer suction pipeline, thereby controlling the flow rate of the source fertilizer in the pipeline. Taking an electric ball valve as an example, the controller can send a control signal to the electric ball valve. According to the control signal, the electric ball valve rotates the angle of its ball, thereby controlling the opening ratio of the valve.

[0067] Optionally, the controller can control the opening ratio of the proportional valve of each of the multiple fertilizer suction pipelines, or the controller can control the opening ratio of only some of the proportional valves of the multiple fertilizer suction pipelines. The selection of which fertilizer suction pipeline to open can be determined according to actual needs.

[0068] After the controller performs its first control on the proportional valve of the multi-channel fertilizer suction pipeline, the opening ratio of the proportional valve of the multi-channel fertilizer suction pipeline can be called the initial ratio.

[0069] In step S330, the controller can detect real-time parameters of the fertilizer in the fertilizer mixing pipeline. Specifically, such as... Figure 2 As shown, a detector can be installed at the fertilizer mixing pipeline. The controller can control the detector to detect the real-time parameters of the fertilizer in the pipeline. After the detector completes the detection, it can send the real-time parameters to the controller. The type of this real-time parameter is the same as that of the target parameter. For example, if the target parameter is an EC value, the real-time parameter is also an EC value.

[0070] It should be noted that, in this embodiment of the application, the fertilizer in the fertilizer mixing pipe is a mixture of source fertilizer and solution introduced into the water inlet pipe, which can also be called liquid fertilizer. In other words, when the controller controls the detector to detect the real-time parameters of the fertilizer in the fertilizer mixing pipe, a solution has already been introduced into the water inlet pipe. This solution can be water, or it can be a liquid fertilizer solution flowing in from the irrigation channel.

[0071] In step S340, the controller can adjust the opening ratio of the proportional valve according to the real-time parameters of the fertilizer until the difference between the real-time parameters of the fertilizer and the target parameters meets the preset requirements.

[0072] As an example, both the real-time parameter and the target parameter are concentrations. When the real-time concentration of the fertilizer is lower than the target concentration, the controller can increase the opening ratio of the proportional valve to increase the real-time concentration of the fertilizer; conversely, when the real-time concentration of the fertilizer is higher than the target concentration, the controller can decrease the opening ratio of the proportional valve to decrease the real-time concentration of the fertilizer.

[0073] As another example, both the real-time parameter and the target parameter are pH values. When the real-time pH value of the fertilizer is acidic and the target pH value is close to neutral, the controller can increase the proportion of the proportional valve in the fertilizer absorption pipeline corresponding to the alkaline fertilizer and decrease the proportion of the proportional valve in the fertilizer absorption pipeline corresponding to the acidic fertilizer, thereby reducing the pH value of the fertilizer to be close to neutral.

[0074] Of course, when the real-time parameters and target parameters are other types of parameters, the controller can also adjust the proportional valve according to the real-time parameters to control the flow rate of the source fertilizer, thereby making the real-time parameters of the fertilizer close to the target parameters and meeting the preset requirements.

[0075] The technical solution of this application embodiment involves installing a proportional valve in the multi-channel fertilizer suction pipeline of an automatic fertigation machine. By controlling the opening ratio of the proportional valve, the proportion of each source fertilizer in the fertilizer mixture is controlled, making the fertilizer preparation process more precise. Furthermore, during fertilizer preparation, the opening ratio of the proportional valve can be adjusted according to the real-time parameters of the fertilizer in the mixing pipeline, ensuring that the difference between the real-time fertilizer parameters and the target parameters meets preset requirements, thus achieving precise fertilizer preparation and realizing the goal of precision fertilization.

[0076] Figure 4 A schematic flowchart of another fertilizer preparation method 400 provided in an embodiment of this application is shown.

[0077] like Figure 4 As shown, the fertilizer preparation method 400 includes the following steps.

[0078] S410: Obtain the target parameters for the fertilizer.

[0079] S420: Initial control of the initial opening ratio of the proportional valve in the multi-way fertilizer suction pipeline to control the initial flow rate of the source fertilizer, wherein the initial opening ratio is less than or equal to the target value so that the initial flow rate is less than or equal to 15% of the maximum flow rate.

[0080] S430: Detects real-time parameters of fertilizer in the fertilizer mixing pipeline.

[0081] S440: Determine the current adjustment direction of the proportional valve's opening ratio based on the difference between the current real-time parameters and the target parameters.

[0082] S450: Determine the current adjustment value of the opening ratio of the proportional valve based on the difference between the current real-time parameter and the target parameter, as well as the difference between the previous real-time parameter and the target parameter.

[0083] S460: Adjust the opening ratio of the proportional valve until the difference between the real-time parameters of the fertilizer and the target parameters meets the preset requirements.

[0084] The configuration method 400 provided in this application embodiment can also be executed by the controller of the automatic water and fertilizer machine in the above embodiment.

[0085] In step S420, the controller can initially control the initial opening ratio of the proportional valve in the multi-channel fertilizer suction pipeline. The initial opening ratio can be set to a small value so that the initial flow rate of the source fertilizer in the fertilizer suction pipeline is small. In this embodiment, the initial flow rate of the source fertilizer can be set to less than 15% of the maximum flow rate, where the maximum flow rate is the flow rate of the source fertilizer in the fertilizer suction pipeline when the proportional valve is opened to 100%.

[0086] It is understandable that due to differences in the structure or type of proportional valve, different proportional valves may have different opening ratios corresponding to 15% flow. However, technicians can determine the opening ratio of the proportional valve at 15% flow through experimental measurements before actual irrigation and use this opening ratio as the target value. During actual irrigation, the opening ratio of the proportional valve can be directly adjusted to this target value so that the flow rate of the fluid in the pipeline corresponds to 15% of the maximum flow rate.

[0087] By using the technical solution of this embodiment, the initial opening ratio of the proportional valve is set to be relatively small, so the initial flow rate of the source fertilizer in the fertilizer suction pipe is also relatively small, providing sufficient margin for subsequent adjustments and preventing the initial flow rate of the source fertilizer from being too large, which would cause the fertilizer concentration to be too high. This prevents high-concentration fertilizer from causing irreversible damage to crops and improves the fertilization effect.

[0088] In step S440, the controller can determine the current adjustment direction of the proportional valve's opening ratio based on the difference between the current real-time parameters and the target parameters. During fertilizer preparation, the controller can adjust the proportional valve multiple times. In each adjustment, the controller can determine whether to increase or decrease the opening ratio of the proportional valve based on the difference between the current real-time parameters and the target parameters of the fertilizer.

[0089] Specifically, if the current real-time parameter is less than the target parameter, the controller can increase the opening ratio of the proportional valve; or, if the current real-time parameter is greater than the target parameter, the controller can decrease the opening ratio of the proportional valve.

[0090] Through the technical solution of this implementation, the controller can quickly determine the adjustment method of the proportional valve with high accuracy.

[0091] In step S450, the controller can further determine the current adjustment value of the opening ratio of the proportional valve based on the difference between the current real-time parameter and the target parameter, and the difference between the previous real-time parameter and the target parameter.

[0092] Specifically, in this step, the controller performs at least two adjustments to the proportional valve. The current adjustment is the (i+2)th adjustment, and the current real-time parameter is the parameter formed after the previous adjustment, i.e., the (i+1)th real-time parameter, where i is a positive integer. The previous real-time parameter is the i-th real-time parameter, where, when i=1, the first real-time parameter is the first real-time parameter value generated after the first control of the proportional valve.

[0093] If the difference between the current real-time parameter and the target parameter is greater than 0, and the difference between the previous real-time parameter and the target parameter is also greater than 0, it indicates that the current real-time parameter is still relatively large. Therefore, the proportional valve can continue to be adjusted with a larger adjustment value in the same direction. The adjustment value is the difference between the adjusted opening ratio and the original opening ratio of the proportional valve.

[0094] If the difference between the current real-time parameter and the target parameter is less than 0, and the difference between the previous real-time parameter and the target parameter is also less than 0, it indicates that the current real-time parameter is still small. The proportional valve can be adjusted in the same direction. Considering that when the opening ratio of the proportional valve is small, a small adjustment of the opening ratio may cause a large change in the real-time parameter, the adjustment value can be designed to be small to meet the fertilizer adjustment requirements.

[0095] If the difference between the current real-time parameter and the target parameter is greater than 0, and the difference between the previous real-time parameter and the target parameter is less than 0, or if the difference between the current real-time parameter and the target parameter is less than 0, and the difference between the previous real-time parameter and the target parameter is greater than 0, it means that the current real-time parameter is close to the target parameter. In this case, the proportional valve needs to be adjusted with a smaller adjustment value.

[0096] As an example, if the difference between the current real-time parameter and the target parameter, as well as the difference between the previous real-time parameter and the target parameter, are both greater than 0, the controller can determine that the current adjustment value of the opening ratio of the proportional valve is greater than or equal to the previous adjustment value.

[0097] Alternatively, if the difference between the current real-time parameter and the target parameter, as well as the difference between the previous real-time parameter and the target parameter, are both less than 0, the controller can determine that the current adjustment value of the opening ratio of the proportional valve is less than or equal to the previous adjustment value.

[0098] Alternatively, if either the difference between the current real-time parameter and the target parameter, or the difference between the previous real-time parameter and the target parameter, is greater than 0 and the other is less than 0, the controller can determine that the current adjustment value of the opening ratio of the proportional valve is less than the previous adjustment value.

[0099] Among them, the current adjustment value of the opening ratio of the proportional valve and the previous adjustment value are the increase or decrease ratio values, that is, the difference between the adjusted opening ratio and the opening ratio before adjustment.

[0100] It should be noted that, in this embodiment, the controller performs at least two adjustments to the proportional valve. The first adjustment is the initial control, as described in step S420 above. In the second adjustment, the adjustment value of the proportional valve's opening ratio can be a preset value, which can be less than or equal to the target value of the initial opening ratio.

[0101] The technical solution of this application embodiment can determine the adjustment value of the opening ratio of the proportional valve based on the difference between the real-time parameters generated by two consecutive adjustments and the target parameters, thereby improving the adjustment accuracy of the proportional valve and thus improving the fertilizer configuration accuracy.

[0102] Optionally, in some implementations, the controller can adjust the opening ratio of multiple proportional valves in the multi-channel fertilizer suction pipeline in the same way according to real-time parameters.

[0103] Specifically, when it is determined that fertilizer needs to be configured using source fertilizer corresponding to multiple fertilizer suction pipelines, the controller can adjust multiple proportional valves in the multiple fertilizer suction pipelines in the same way, that is, the adjustment direction and adjustment value of multiple proportional valves are all the same. Through this implementation method, the controller's control logic can be relatively simple, ensuring fertilizer configuration accuracy while also improving the speed of fertilizer configuration.

[0104] Figure 5 A schematic flowchart of another fertilizer preparation method 500 provided in an embodiment of this application is shown.

[0105] like Figure 5 As shown, the fertilizer preparation method 500 includes the following steps.

[0106] S510: Obtain the target EC value for fertilizer.

[0107] S520: Initial control of the initial opening ratio of the proportional valve in the multi-channel fertilizer suction pipeline to control the initial flow rate of the source fertilizer.

[0108] S530: Detects the real-time EC value of fertilizer in the mixed fertilizer pipeline.

[0109] S540: Determine whether the real-time EC value is less than the target EC value.

[0110] S541: If so, increase the opening ratio of the proportional valve by the first adjustment value.

[0111] S542: If not, determine whether the real-time EC value is greater than the target EC value.

[0112] S551: If not, EC value adjustment is complete.

[0113] S552: If so, reduce the opening ratio of the proportional valve by the second adjustment value.

[0114] S560: Determine whether the real-time EC value is less than the target EC value.

[0115] S561: If so, increase the opening ratio of the proportional valve by the third adjustment value.

[0116] S562: If not, determine whether the real-time EC value is greater than the target EC value.

[0117] S571: If not, EC value adjustment is complete.

[0118] S572: If so, reduce the opening ratio of the proportional valve by the fourth adjustment value.

[0119] In this embodiment, both the target parameter and the real-time parameter of the fertilizer are EC values. The configuration method 500 provided in this embodiment can also be executed by the controller of the automatic water and fertilizer machine in the above embodiment.

[0120] Specifically, see Figure 5 As shown in the embodiment of this application, the EC value is adjusted three times.

[0121] After the first adjustment, the controller can control the detector to detect the first real-time EC value of the fertilizer.

[0122] During the second adjustment, step S540 can be executed first, which determines whether the first real-time EC value is less than the target EC value. If so, the opening ratio of the proportional valve is increased by a first adjustment value. Optionally, this first adjustment value is a preset value, which can be close to or equal to the initial opening ratio of the proportional valve. As an example, if the initial opening ratio of the proportional valve is 5% during the first adjustment, the first adjustment value can also be equal to 5%. After increasing the opening ratio of the proportional valve by the first adjustment value, the opening ratio of the proportional valve becomes 10%.

[0123] If the first real-time EC value is not less than the target EC value, then step S542 is executed, that is, it is determined whether the first real-time EC value is greater than the target EC value. If not, it means that the current first real-time EC value is equal to the target EC value, and the fertilizer EC value adjustment is completed. If yes, then the opening ratio of the proportional valve is reduced by the second adjustment value. Optionally, the second adjustment value is a preset value, which can be less than or close to the initial opening ratio of the proportional valve. As an example, in the first adjustment process, the initial opening ratio of the proportional valve is 5%, then the second adjustment value can be equal to 3%. After reducing the opening ratio of the proportional valve by the second adjustment value, the opening ratio of the proportional valve is 2%.

[0124] After the second adjustment, the controller can again control the detector to detect the real-time EC value of the fertilizer in the fertilizer mixing pipeline. This EC value can be called the second real-time EC value.

[0125] The third adjustment process can be divided into two cases. In the first case, the opening ratio of the proportional valve is increased by the first adjustment value, and then the third adjustment process is executed. In the second case, the opening ratio of the proportional valve is decreased by the second adjustment value, and then the third adjustment process is executed.

[0126] In the first case, the third adjustment process can be the same as the second adjustment process, that is, repeating steps S540 to S552. During the second and third adjustments, if both the first real-time EC value and the second real-time EC value are greater than the target EC value, the opening ratio of the proportional valve is increased by the first adjustment value. For example, if the initial opening ratio of the proportional valve is 5%, and the first adjustment value is also equal to 5%, then after the third adjustment, the opening ratio of the proportional valve will be 15%.

[0127] In the second case, the third adjustment process can be found in [reference needed]. Figure 5 Steps S560 to S572. In step S560, the controller determines whether the second real-time EC value is less than the target EC value. If so, the opening ratio of the proportional valve is increased by a third adjustment value. Optionally, the third adjustment value may be less than or equal to the second adjustment value. As an example, if the second adjustment value is 3%, the third adjustment value may be 2%.

[0128] If the second real-time EC value is not less than the target EC value, then step S562 is executed, which determines whether the second real-time EC value is greater than the target EC value. If not, it means that the current second real-time EC value is equal to the target EC value, and the fertilizer EC value adjustment is complete. If yes, then the opening ratio of the proportional valve is reduced by the fourth adjustment value. Optionally, the fourth adjustment value can also be less than or equal to the second adjustment value. As an example, if the second adjustment value is 3%, then the fourth adjustment value can be 1%.

[0129] Following the above logic, the i-th adjustment can be performed sequentially until the real-time EC value equals the target EC value, at which point the fertilizer's EC value adjustment is complete.

[0130] Optionally, after the controller adjusts the opening ratio of the proportional valve, the fertilizer in the fertilizer mixing pipeline can be tested again after a preset time interval. This ensures that the source fertilizer in the fertilizer suction pipeline is fully mixed after entering the fertilizer mixing pipeline, guaranteeing the accuracy of real-time EC value detection. As an example, the preset time interval can be determined according to the actual pipeline design; for example, it can be 1 minute.

[0131] The technical solutions described in the above-mentioned embodiments allow for relatively precise adjustment of the fertilizer's EC value, ensuring that the fertilizer meets target requirements and enabling precise fertilization of farmland crops. This solution is particularly suitable for farmland in greenhouse environments, where crop fertilization requirements are high.

[0132] Optionally, see [link to relevant documentation] Figure 5 As shown, configuration method 500 may also include the following steps.

[0133] S580: Determine whether the difference between the real-time EC value and the target EC value is less than or equal to a preset threshold.

[0134] S581: If so, EC value adjustment is complete.

[0135] If not, the above adjustment process can continue to be executed in a loop until the difference between the real-time EC value and the target EC value is equal to 0, or less than or equal to the preset threshold.

[0136] Optionally, the preset threshold can be determined based on actual needs (e.g., the precision of fertilizer adjustment). Optionally, the preset threshold is related to the target EC value. By way of example and not limitation, the preset threshold can be 2% of the target EC value.

[0137] The above text Figure 5 The EC value, a parameter for fertilizer testing, was used as an example for specific explanation. It is understood that the EC value can also be replaced by other types of parameters, such as pH value.

[0138] By incorporating the technical solution of this application embodiment into the adjustment process of EC value or other types of parameters, a preset threshold is added as the end condition of the adjustment, which helps to improve the adjustment speed and prevent the adjustment time process from affecting the on-site irrigation and fertilization progress.

[0139] Optionally, in any of the above embodiments, before the controller first controls the opening ratio of the proportional valve in the multi-channel fertilizer suction pipeline, the configuration method may further include: detecting the parameters of the source fertilizer in the multi-channel fertilizer suction pipeline, and determining the configuration of the fertilizer in the mixed fertilizer pipeline based on the parameters of the source fertilizer and the target parameters.

[0140] In this embodiment, the controller first detects the parameters of the source fertilizer in the fertilizer suction pipe to determine whether the source fertilizer can be configured to meet the target requirements, i.e., whether the fertilizer meets the target parameters. Only if the source fertilizer meets the target requirements will subsequent steps be executed, i.e., the proportional valve of the fertilizer suction pipe will be controlled to begin configuring the fertilizer in the mixed fertilizer pipe.

[0141] As an example, if the maximum EC value of multiple source fertilizers is less than the target EC value, or if the minimum EC value of multiple source fertilizers is greater than the target EC value, it means that the multiple source fertilizers cannot be configured to produce fertilizer with the target EC value. In this case, the controller can notify the user through the communication device or display device of the automatic water and fertilizer machine to replace the source fertilizers.

[0142] During the process of detecting the parameters of the source fertilizer, the water inlet pipe can be closed, and multiple fertilizer suction pipes can be opened sequentially, allowing the source fertilizer in these pipes to enter the mixing fertilizer pipe. The fertilizer in the mixing fertilizer pipe can then be tested to obtain the parameters of multiple source fertilizers. For example, only the first fertilizer suction pipe can be opened, allowing source fertilizer #1 corresponding to the first suction pipe to enter the fertigation machine, and the parameters of source fertilizer #1 can be detected. Then, the first fertilizer suction pipe can be closed, and the second fertilizer suction pipe can be opened to detect the parameters of source fertilizer #2. This process can be repeated to obtain the parameters of all source fertilizers.

[0143] The technical solution of this implementation method can first detect the parameters of the source fertilizer in the multi-channel fertilizer suction pipeline, and then perform subsequent steps based on the source fertilizer parameters and target parameters, which can reduce the risk of ineffective fertilizer configuration and improve the effectiveness of fertilizer configuration.

[0144] Optionally, in any of the above embodiments, the target parameter and the real-time parameter include: EC value and / or pH value.

[0145] Optionally, in any of the above embodiments, the multi-channel fertilizer suction pipe can be used to suction acidic and alkaline fertilizers. In this case, the target parameters and real-time parameters may simultaneously include EC value and pH value.

[0146] In this embodiment, the source fertilizer corresponding to the multi-channel fertilizer suction pipeline includes both acidic and alkaline source fertilizers, thus flexibly adapting to various requirements. In this case, the target parameters and real-time parameters can simultaneously include EC value and pH value. During the same adjustment process of the proportional valve, multiple parameters of the fertilizer can be configured at the same time, which has high configuration efficiency and reduces the configuration time required for fertilizer.

[0147] The above text combined Figures 3 to 5 The method embodiments provided in this application are described below, in conjunction with... Figure 6 and Figure 7 This application describes the device embodiments provided. It is understood that the device embodiments described below can correspond to the method embodiments described above, and specific solutions can be found in the above description. Repeated parts will not be repeated.

[0148] Figure 6 A schematic structural block diagram of an automatic water and fertilizer machine 600 provided in an embodiment of this application is shown.

[0149] like Figure 6 As shown, the automatic water and fertilizer machine 600 includes: a multi-channel fertilizer suction pipe 610, a water inlet pipe 620, a fertilizer mixing pipe 630, a water outlet pipe 640, a controller 650, and a detector 660.

[0150] Each of the multi-channel fertilizer suction pipes 610 has a suction port and a proportional valve. The suction port is used to draw in the source fertilizer, and the proportional valve is used to control the flow rate of the source fertilizer in the suction pipe. The water inlet pipe 620 is used to introduce a solution, which can be water or a liquid fertilizer solution. The fertilizer mixing pipe 630 is connected to the multi-channel fertilizer suction pipe 610 and the water inlet pipe 620, and is used to mix the source fertilizer introduced into the multi-channel fertilizer suction pipe 610 and the solution introduced into the water inlet pipe 620. The water outlet pipe 640 is connected to the fertilizer mixing pipe 630, and is used to output the mixed fertilizer. A detector 660 is installed in the fertilizer mixing pipe 630 to detect the real-time parameters of the fertilizer in the fertilizer mixing pipe 630. The controller 650 is connected to the proportional valve in the multi-channel fertilizer suction pipeline 610 and is used to control the opening ratio of the proportional valve to control the flow rate of the source fertilizer. The controller 650 is also used to acquire the target parameters of the fertilizer and adjust the opening ratio of the proportional valve according to the real-time parameters until the difference between the real-time parameters of the fertilizer and the target parameters meets the preset requirements.

[0151] Optionally, the specific connection methods of the aforementioned multi-channel fertilizer suction pipe 610, water inlet pipe 620, mixed fertilizer pipe 630, water outlet pipe 640, detector 660, and controller 650 can be found in the above text. Figure 2 The connection methods of various pipes and components.

[0152] Optionally, the controller 650 may perform the following functions. It should be noted that, in the embodiments of this application, the specific scheme performed by the controller 650 can be found in the relevant description of the method embodiments above, and will not be repeated in detail below.

[0153] In some implementations, the controller 650 is used to: initially control the opening ratio of the proportional valve in the multi-channel fertilizer suction pipeline 610 to control the initial flow rate of the source fertilizer, wherein the initial opening ratio is less than or equal to a target value such that the initial flow rate is less than or equal to 15% of the maximum flow rate.

[0154] In some implementations, the controller 650 is used to: determine the current adjustment direction of the opening ratio of the proportional valve based on the difference between the current real-time parameter and the target parameter.

[0155] In some implementations, the controller 650 is used to: increase the opening ratio of the proportional valve when the real-time parameter is less than the target parameter; or, decrease the opening ratio of the proportional valve when the real-time parameter is greater than the target parameter.

[0156] In some implementations, the controller 650 is used to determine the current adjustment value of the opening ratio of the proportional valve based on the difference between the current real-time parameter and the target parameter, and the difference between the previous real-time parameter and the target parameter.

[0157] In some embodiments, the controller 650 is configured to: determine that the current adjustment value of the opening ratio of the proportional valve is greater than or equal to the previous adjustment value when both the difference between the current real-time parameter and the target parameter and the difference between the previous real-time parameter and the target parameter are greater than 0; or, determine that the current adjustment value of the opening ratio of the proportional valve is less than or equal to the previous adjustment value when both the difference between the current real-time parameter and the target parameter and the difference between the previous real-time parameter and the target parameter are less than 0; or, determine that the current adjustment value of the opening ratio of the proportional valve is less than the previous adjustment value when one of the differences between the current real-time parameter and the target parameter and the difference between the previous real-time parameter and the target parameter is greater than 0 and the other is less than 0.

[0158] In some implementations, the controller 650 is used to adjust the opening ratio of multiple proportional valves in the multi-channel fertilizer suction pipeline 610 in the same manner according to real-time parameters.

[0159] In some implementations, the controller 650 is used to: adjust the opening ratio of the proportional valve according to real-time parameters until the difference between the real-time parameters of the fertilizer and the target parameters is less than or equal to a preset threshold.

[0160] In some embodiments, detector 660 is also used to: detect the parameters of the source fertilizer in the multi-channel fertilizer suction pipe 610; controller 650 is also used to: determine the configuration of fertilizer in the mixed fertilizer pipe 630 based on the parameters of the source fertilizer and the target parameters.

[0161] In some implementations, the target parameters and real-time parameters include: EC value and / or pH value.

[0162] In some embodiments, the multi-channel fertilizer suction pipe 610 is used to suction acidic and alkaline fertilizer sources, and the target parameters and real-time parameters include both EC value and pH value.

[0163] Figure 7 The diagram shows a structural schematic of an automatic water and fertilizer machine 700 provided in an embodiment of this application.

[0164] like Figure 7 As shown, the automatic fertigation machine 700 includes: a multi-channel fertilizer suction pipe 718, a water inlet pipe 716, a fertilizer mixing pipe 717, and a water outlet pipe 719. The installation method of the multi-channel fertilizer suction pipe 610, water inlet pipe 620, fertilizer mixing pipe 630, and water outlet pipe 640 in the automatic fertigation machine can also be found in [reference needed]. Figure 7 The various types of pipes shown.

[0165] The multi-channel fertilizer suction pipeline 718 has multiple fertilizer suction ports 715. A one-way valve 712, a float flow meter 711, and a proportional valve 707 are installed in the multi-channel fertilizer suction pipeline 718. As an example, the proportional valve 707 can be an electric ball valve.

[0166] The water inlet pipe 716 has a water inlet 713. The water inlet pipe 716 can be connected to multiple fertilizer suction pipes 718 through multiple branch pipes and flow into the fertilizer mixing pipe 717.

[0167] The fertilizer mixing pipe 717 is connected to the pump 710, and the pump 710 is connected to the outlet pipe 719. By operating the pump 710, fertilizer in the fertilizer mixing pipe 717 can be drawn into the outlet pipe 719 and discharged from the outlet 714 of the outlet pipe 719. Optionally, the pump 710 can be a vertical or horizontal pump; the specific type of pump is not limited in this embodiment.

[0168] To detect the parameters of the fertilizer in the fertilizer mixing pipeline 717, the fertilizer mixing pipeline is also connected to a flow channel 709. The flow channel 709 is equipped with detectors, such as a pH sensor 705 and an EC sensor 706. To allow the fertilizer in the fertilizer mixing pipeline 717 to enter the flow channel 709, the flow channel 709 is also connected to an ejector 704.

[0169] In addition to the pipes described above, the automatic fertigation machine 700 may also include a pressure balancing pipe 720, which can be connected to the water inlet pipe 716 and the fertilizer mixing pipe 717. The pressure balancing pipe 720 is equipped with a manual valve 703 and a pressure sensor 702. The pressure sensor 702 can detect the pressure value at the end of the water inlet pipe 716 in real time, transmit and display the data. The user can open the manual valve 703 appropriately according to the pressure value to allow excess water to enter the fertilizer mixing pipe 717 through the pressure balancing pipe 720, still serving as the water source for the fertigation mixture and continuing to provide irrigation water, while simultaneously relieving pressure in the pipes and balancing the liquid pressure in the water inlet pipe 716 and the fertilizer mixing pipe 717.

[0170] The automatic water and fertilizer machine 700 may also include structural components such as an electrical mounting cabinet 701 and an alloy bracket 708. The electrical mounting cabinet 701 can house electrical components such as a controller, display, and communication devices; the controller may include, for example, a PLC control system. The alloy bracket 708, for example, can be an aluminum alloy bracket, used to support various pipes installed in the automatic water and fertilizer machine 700.

[0171] Optionally, in some embodiments, the inlet 713 of the inlet pipe 716 and the outlet 714 of the outlet pipe 719 are connected to the irrigation channel of the irrigation system where the automatic fertigation machine 700 is located.

[0172] Alternatively, in the irrigation channel, the outlet 714 may be located upstream of the inlet 713.

[0173] With the technical solution of this embodiment, since the outlet 714 is located upstream of the inlet 713, the liquid entering the automatic water and fertilizer machine 700 through the inlet 713 is a water and fertilizer mixture containing a certain amount of fertilizer, rather than clear water. The purpose of doing so is to increase the fertilizer concentration in the irrigation channel and quickly achieve the purpose of fertilizer parameter adjustment, such as quickly achieving the purpose of fertilizer EC or concentration adjustment.

[0174] The specific principle is as follows: For example, the rated flow rate of the water pump in an automatic water fertilizer is 4m³ / h. 3 / h, the flow rate of the irrigation channel is 100m³ / h. 3 / h. Assuming the fertilizer solution concentration remains constant, and the automatic fertigation machine's pump draws in a flow rate of 3m³ / h from the irrigation channel. 3 If the water flow rate is 4m³ / h and all of it is clean water, then the flow rate at the outlet is 4m³ / h. 3 / h, the rate at which fertilizer is introduced is 1m 3 / h, after entering the irrigation channel, the total flow rate is 101m³. 3 / h, where the fertilizer flow rate is 1m³ / h. 3 / h. If the inlet of the automatic water and fertilizer machine is moved downstream of the outlet, then the 3m water entering the automatic water and fertilizer machine... 3 The flow rate of / h is not clean water; it contains fertilizer, and the flow rate is approximately 3 / 10¹ m³. 3 / h, plus the fertilizer brought in by the water pump at a speed of 1m. 3 If the flow rate remains constant, then the theoretical rate at which fertilizer is introduced into the outlet is (1+3 / 101) m / s. 3 / h, so the concentration of fertilizer solution flowing into the irrigation channel will increase.

[0175] This application also provides an irrigation system. Figure 8 A schematic block diagram of an irrigation system 800 is shown.

[0176] like Figure 8 As shown, the irrigation system 800 may include: an irrigation channel 810 and an automatic water and fertilizer machine provided in any of the embodiments described above, for example, Figure 2 The automatic water and fertilizer machine 200 shown Figure 6 The automatic water and fertilizer machine 600 shown Figure 7 The automatic water and fertilizer machine 700 is shown. The water inlet pipe and the water outlet pipe of the automatic water and fertilizer machine are connected to the irrigation channel 810 to apply fertilizer to the farmland through the irrigation channel 810.

[0177] Those skilled in the art will recognize that the example algorithm steps described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0178] It should be understood that the specific examples in this document are only intended to help those skilled in the art better understand the embodiments of this application, and are not intended to limit the scope of the embodiments of this application.

[0179] It should also be understood that, in the various embodiments of this application, the sequence number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0180] It should also be understood that the various implementation methods described in this specification can be implemented individually or in combination, and the embodiments of this application are not limited in this respect.

[0181] Unless otherwise stated, all technical and scientific terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items. The singular forms "a," "the," and "the" as used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0182] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0183] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0184] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0185] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0186] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for preparing a fertilizer, characterized in that, An automatic fertigation machine is applied, comprising: an inlet pipe, multiple fertilizer suction pipes, a fertilizer mixing pipe, and an outlet pipe. Each of the multiple fertilizer suction pipes has a fertilizer suction port and a proportional valve. The fertilizer suction port is used to suck up source fertilizer, and the proportional valve is used to control the flow rate of source fertilizer in the fertilizer suction pipe. The solution introduced into the inlet pipe is mixed with the source fertilizer introduced into the multiple fertilizer suction pipes in the fertilizer mixing pipe, and then output through the outlet pipe. The configuration method includes: Obtain the target parameters for the fertilizer; The initial opening ratio of the proportional valve in the multi-channel fertilizer suction pipeline is controlled to control the initial flow rate of the source fertilizer, wherein the initial opening ratio is less than or equal to a target value, so that the initial flow rate is less than or equal to 15% of the maximum flow rate; The real-time parameters of the fertilizer in the mixed fertilizer pipeline are detected, wherein the fertilizer is a mixture of the source fertilizer and the solution introduced into the water inlet pipeline; Adjust the opening ratio of the proportional valve according to the real-time parameters until the difference between the real-time parameters of the fertilizer and the target parameters meets the preset requirements; The adjustment of the opening ratio of the proportional valve based on the real-time parameters includes: If the difference between the current real-time parameter and the target parameter, and the difference between the previous real-time parameter and the target parameter are both greater than 0, then the current adjustment value of the opening ratio of the proportional valve is determined to be greater than or equal to the previous adjustment value; or, If the difference between the current real-time parameter and the target parameter, and the difference between the previous real-time parameter and the target parameter are both less than 0, then the current adjustment value of the opening ratio of the proportional valve is determined to be less than or equal to the previous adjustment value; or, If the difference between the current real-time parameter and the target parameter, and the difference between the previous real-time parameter and the target parameter, are both greater than 0 and less than 0, it is determined that the current adjustment value of the opening ratio of the proportional valve is less than the previous adjustment value.

2. The configuration method according to claim 1, characterized in that, The step of adjusting the opening ratio of the proportional valve according to the real-time parameters includes: The current adjustment direction of the opening ratio of the proportional valve is determined based on the difference between the current real-time parameters and the target parameters.

3. The configuration method according to claim 2, characterized in that, Determining the current adjustment direction of the opening ratio of the proportional valve based on the difference between the current real-time parameter and the target parameter includes: If the current real-time parameter is less than the target parameter, increase the opening ratio of the proportional valve; or, If the current real-time parameter is greater than the target parameter, reduce the opening ratio of the proportional valve.

4. The configuration method according to any one of claims 1 to 3, characterized in that, The step of adjusting the opening ratio of the proportional valve according to the real-time parameters includes: Based on the real-time parameters, the opening ratios of multiple proportional valves in the multi-channel fertilizer suction pipeline are adjusted in the same manner.

5. The configuration method according to any one of claims 1 to 3, characterized in that, The step of adjusting the opening ratio of the proportional valve according to the real-time parameters until the difference between the real-time parameters of the fertilizer and the target parameters meets the preset requirements includes: The opening ratio of the proportional valve is adjusted according to the real-time parameters until the difference between the real-time parameters of the fertilizer and the target parameters is less than or equal to a preset threshold.

6. The configuration method according to any one of claims 1 to 3, characterized in that, Before controlling the opening ratio of the proportional valve in the multi-channel fertilizer suction pipeline, the configuration method further includes: Detect the parameters of the source fertilizer in the multi-channel fertilizer suction pipeline; Based on the parameters of the source fertilizer and the target parameters, the fertilizer in the mixed fertilizer pipeline is configured accordingly.

7. The configuration method according to any one of claims 1 to 3, characterized in that, The target parameter and the real-time parameter include: EC value and / or pH value.

8. The configuration method according to any one of claims 1 to 3, characterized in that, The multi-channel fertilizer suction pipe is used to absorb acidic and alkaline fertilizer sources. The target parameters and the real-time parameters include both EC value and pH value.

9. An automatic water and fertilizer machine, characterized in that, include: A multi-channel fertilizer suction pipeline, wherein each channel of the multi-channel fertilizer suction pipeline has a fertilizer suction port and a proportional valve, wherein the fertilizer suction port is used to suck up source fertilizer, and the proportional valve is used to control the flow rate of source fertilizer in the fertilizer suction pipeline; Water inlet pipe, used to introduce the solution; A fertilizer mixing pipe, connected to the multi-channel fertilizer suction pipe and the water inlet pipe, is used to mix the source fertilizer introduced through the multi-channel fertilizer suction pipe and the solution introduced through the water inlet pipe; The water outlet pipe is connected to the fertilizer mixing pipe and is used to output the mixed fertilizer. A detector is installed in the fertilizer mixing pipeline to detect the real-time parameters of the fertilizer in the fertilizer mixing pipeline; The controller, connected to the proportional valve in the multi-channel fertilizer suction pipeline, is used to control the opening ratio of the proportional valve to control the flow rate of the source fertilizer; the controller is also used to acquire the target parameters of the fertilizer and adjust the opening ratio of the proportional valve according to the real-time parameters until the difference between the real-time parameters of the fertilizer and the target parameters meets the preset requirements. The controller is used to: initially control the opening ratio of the proportional valve in the multi-channel fertilizer suction pipeline to control the initial flow rate of the source fertilizer, wherein the initial opening ratio is less than or equal to a target value, so that the initial flow rate is less than or equal to 15% of the maximum flow rate; The controller is configured to: determine that the current adjustment value of the opening ratio of the proportional valve is greater than or equal to the previous adjustment value when both the difference between the current real-time parameter and the target parameter and the difference between the previous real-time parameter and the target parameter are greater than 0; or, If the difference between the current real-time parameter and the target parameter, and the difference between the previous real-time parameter and the target parameter are both less than 0, then the current adjustment value of the opening ratio of the proportional valve is determined to be less than or equal to the previous adjustment value; or, If the difference between the current real-time parameter and the target parameter, and the difference between the previous real-time parameter and the target parameter, are both greater than 0 and less than 0, it is determined that the current adjustment value of the opening ratio of the proportional valve is less than the previous adjustment value.

10. The automatic water and fertilizer machine according to claim 9, characterized in that, The controller is used to: determine the current adjustment direction of the opening ratio of the proportional valve based on the difference between the current real-time parameter and the target parameter.

11. The automatic water and fertilizer machine according to claim 10, characterized in that, The controller is configured to: increase the opening ratio of the proportional valve when the real-time parameter is less than the target parameter; or, If the real-time parameter is greater than the target parameter, the opening ratio of the proportional valve is reduced.

12. The automatic water and fertilizer machine according to any one of claims 9 to 11, characterized in that, The controller is used to adjust the opening ratio of multiple proportional valves in the multi-channel fertilizer suction pipeline in the same manner according to the real-time parameters.

13. The automatic water and fertilizer machine according to any one of claims 9 to 11, characterized in that, The controller is used to: adjust the opening ratio of the proportional valve according to the real-time parameters until the difference between the real-time parameters of the fertilizer and the target parameters is less than or equal to a preset threshold.

14. The automatic water and fertilizer machine according to any one of claims 9 to 11, characterized in that, The detector is also used to detect parameters of the source fertilizer in the multi-channel fertilizer suction pipeline; The controller is also configured to: determine the configuration of fertilizer in the mixed fertilizer pipeline based on the parameters of the source fertilizer and the target parameters.

15. The automatic water and fertilizer machine according to any one of claims 9 to 11, characterized in that, The target parameter and the real-time parameter include: EC value and / or pH value.

16. The automatic water and fertilizer machine according to any one of claims 9 to 11, characterized in that, The multi-channel fertilizer suction pipe is used to absorb acidic and alkaline fertilizer sources. The target parameters and the real-time parameters include both EC value and pH value.

17. The automatic water and fertilizer machine according to any one of claims 9 to 11, characterized in that, The inlet of the water inlet pipe and the outlet of the water outlet pipe are connected to the irrigation channel of the irrigation system where the automatic fertigation machine is located.

18. The automatic water and fertilizer machine according to claim 17, characterized in that, In the irrigation channel, the outlet is located upstream of the inlet.

19. An irrigation system, characterized in that, include: Irrigation channels, and The automatic water and fertilizer machine as described in any one of claims 9 to 18, wherein the water inlet pipe and the water outlet pipe of the automatic water and fertilizer machine are connected to the irrigation channel to apply fertilizer to the farmland through the irrigation channel.

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