Multi-path constant-flow fertilizer water machine control system and control method

Abstract

The invention discloses a multi-path constant-flow fertilizer water machine control system. The system comprises a master control module; a plurality of sub-control modules, wherein the sub-control modules are connected with the master control module; the liquid inlet electric ball valve is connected with the sub-control module, and the sub-control module controls the actual fertilizer and water flow by controlling the liquid inlet electric ball valve; the Hall flow meter is connected with the sub-control module, generates a pulse signal according to the actual fertilizer and water flow, and sends the pulse signal to the sub-control module; the driving module is connected with the master control module; the sub-control module calculates and monitors the actual fertilizer and water flow in real time through pulse signals and controls the liquid inlet electric ball valve to adjust the actual fertilizer and water flow to achieve the constant flow effect. Different pipelines are controlled through a plurality of sub-control modules, and each sub-control module is matched with a liquid inlet electric ball valve through a Hall flow meter to achieve the effects of accurately controlling various fertilizer and water ratios and irrigating at a constant flow.

Description

Technical Field

[0001] The present invention relates to the technical field of fertilizer and water machines, and in particular to a multi-channel constant-current fertilizer and water machine control system and a control method. Background Art

[0002] With the development of modern agriculture, the scale of agricultural production has gradually expanded. Traditional irrigation and fertilization methods usually rely on experience and judgment, which is not only inefficient, but also easy to cause waste of water resources and fertilizers, and may even cause soil degradation and environmental pollution due to excessive fertilization. Therefore, as an emerging technology, multi-channel constant flow fertilizer water machine is widely used in agricultural irrigation and fertilization processes. Its main purpose is to achieve efficient use of fertilizer and water through precise flow control, improve crop yield and quality, and reduce resource waste and pollution. In traditional fertilizer and water irrigation systems, fertilization rate and fertilization time are often unable to be accurately controlled, resulting in uneven crop growth and even fertilizer damage, which seriously affects the growth and economic benefits of crops. The multi-channel constant flow fertilizer water machine greatly improves the scientificity and accuracy of fertilization by integrating multiple technologies such as flow control, real-time monitoring and intelligent regulation. Therefore, it is very necessary to provide a multi-channel constant flow fertilizer water machine control system and control method.

[0003] However, one of the shortcomings of the related existing technologies is that it is impossible to achieve constant flow irrigation, resulting in uneven fertilizer and water irrigation, affecting crop growth. Summary of the invention

[0004] The present invention aims to solve at least one of the above technical problems.

[0005] The first object of the present invention is to provide a multi-channel constant-flow fertilizer water machine control system.

[0006] The second object of the present invention is to provide a control method for a multi-channel constant-flow fertilizer water machine control system.

[0007] To achieve the first objective of the present invention, an embodiment of the present invention provides a multi-channel constant-flow fertilizer water machine control system, which includes: a main control module; several sub-control modules, which are connected to the main control module; several liquid inlet electric ball valves, which are connected to the sub-control modules, and the sub-control modules control the actual fertilizer water flow by controlling the liquid inlet electric ball valves; several Hall flow meters, which are connected to the sub-control modules, and the Hall flow meters generate pulse signals according to the actual fertilizer water flow, and send the pulse signals to the sub-control modules; a driving module, which is connected to the main control module; wherein the sub-control modules calculate and monitor the actual fertilizer water flow in real time through the pulse signals, and control the liquid inlet electric ball valves to adjust the actual fertilizer water flow to achieve a constant flow effect.

[0008] By setting up several sub-control modules, each sub-control module controls the flow of a fertilizer water separately, and each sub-control module is equipped with a Hall flowmeter and a liquid inlet electric ball valve. The sub-control module controls the actual fertilizer water flow of this fertilizer water by controlling the liquid inlet electric ball valve. The use of the liquid inlet electric ball valve can realize stepless regulation of the fertilizer water flow, making the control of the actual fertilizer water flow more accurate. Through the pulse signal generated by the Hall flowmeter according to the actual fertilizer water flow, the sub-control module can monitor the actual fertilizer water flow in real time, and the sub-control module can judge whether it is necessary to increase or decrease the actual fertilizer water flow by adjusting the liquid inlet electric ball valve according to the calculated actual fertilizer water flow, so that the fertilizer water machine can maintain a constant flow for fertilizer water irrigation. And by controlling several sub-control modules to accurately control the flow of several kinds of fertilizer water, the proportion of various types of fertilizer water can be adjusted automatically to achieve a higher irrigation effect. The automated design of the system reduces the need for manual intervention and reduces the errors and risks caused by manual operation. This makes fertilizer and water management more efficient and saves manpower and time costs.

[0009] In the above technical solution, the multi-channel constant-flow fertilizer water machine control system also includes at least two liquid outlet solenoid valves, and the liquid outlet solenoid valves are connected to the main control module.

[0010] The design of multiple outlet solenoid valves enables the system to flexibly distribute fertilizer and water according to the needs of different crops or regions. By controlling different outlet valves, managers can provide customized fertilizer and water solutions to specific areas or crops to improve resource utilization efficiency. Multiple outlet solenoid valves allow irrigation or fertilization of multiple areas at the same time, which reduces the system's operation time, improves work efficiency, and reduces the need for repeated operations. In the event of a failure of one outlet solenoid valve, other valves can still work normally, enhancing the reliability and stability of the system. This redundant design reduces operational risks and ensures the continuity of fertilizer and water supply. Through different outlet solenoid valves, the system can achieve refined fertilizer and water management to meet the specific requirements of different plant growth stages. For example, the opening and closing state of each outlet valve can be adjusted according to crop growth and environmental conditions to meet different fertilizer and water needs. The connection between the outlet solenoid valve and the main control module enables the system to monitor the status and working conditions of each valve in real time, and adjust and optimize according to flow and crop needs, further improving the scientificity and effectiveness of fertilizer and water management.

[0011] In any of the above technical solutions, the multi-channel constant-flow fertilizer water machine control system also includes a stirring device, and the stirring device is connected to the main control module.

[0012] The stirring device ensures that the fertilizer and water are fully mixed to avoid fertilizer sedimentation and uneven distribution. Even mixing can improve the utilization efficiency of fertilizers and ensure that crops receive an even supply of nutrients. Some solid fertilizers may take time to completely dissolve. The addition of a stirring device can accelerate the dissolution process of the fertilizer and ensure that the fertilizer is completely dissolved before entering the irrigation system, thereby enhancing the effectiveness of the fertilizer. If the fertilizer and water are not fully mixed, it may cause pipes or nozzles to become clogged. The function of the stirring device helps to reduce this risk, ensure the smooth flow of the system, and reduce maintenance costs and system downtime. The stirring device connected to the main control module can be dynamically adjusted according to actual needs, such as adjusting the stirring speed accordingly at different fertilization stages or when the flow changes to ensure the best mixing effect.

[0013] In any of the above technical solutions, the multi-channel constant-flow fertilizer water machine control system also includes several water level monitoring devices, and the water level monitoring devices are connected to the main control module.

[0014] The water level monitoring device can monitor the water level changes in the fertilizer water bucket in real time and provide accurate data feedback. This helps to ensure that the system is within the normal working range and effectively avoids drying up or overflowing. The water level monitoring device can set a threshold value, and the control system will automatically alarm or close the water inlet valve when the water level reaches a certain height to prevent overflow caused by excessive water level, or when the water level is too low, the system can be shut down in time to avoid the risk of drying up.

[0015] To achieve the second purpose of the present invention, an embodiment of the present invention provides a control method for a multi-channel constant-flow fertilizer and water machine control system, which is used to control the multi-channel constant-flow fertilizer and water machine control system of any one of the above technical solutions, and comprises: step S100: select a sub-control module to operate; step S200: select a time mode or a flow mode; step S300: if the time mode is selected, then input the barrel diameter, water level height and fertilization time, the main control module controls the driving module to extract fertilizer and water corresponding to the sub-control module, the sub-control module calculates the theoretical fertilizer and water flow rate according to the barrel diameter, water level height and fertilization time, and then The actual fertilizer water flow rate is made the same as the theoretical fertilizer water flow rate by controlling the liquid inlet electric ball valve; step S400: the Hall flowmeter generates a pulse signal in real time according to the actual fertilizer water flow rate, and sends the pulse signal to the sub-control module, the sub-control module calculates the actual fertilizer water flow rate according to the pulse signal, and compares the actual fertilizer water flow rate with the theoretical fertilizer water flow rate. If the actual fertilizer water flow rate is greater than the theoretical fertilizer water flow rate, the liquid inlet electric ball valve is controlled to reduce the actual fertilizer water flow rate. If the actual fertilizer water flow rate is less than the theoretical fertilizer water flow rate, the liquid inlet electric ball valve is controlled to increase the actual fertilizer water flow rate. If the actual fertilizer water flow rate is equal to the theoretical fertilizer water flow rate, the actual fertilizer water flow rate is not changed.

[0016] By selecting the time mode or flow mode, users can flexibly set the fertilizer and water application method according to the needs of crops, so as to achieve accurate fertilizer and water management. The system calculates the theoretical fertilizer and water flow rate according to the barrel diameter, water level and fertilization time, and generates a pulse signal according to the actual fertilizer and water flow rate through the Hall flowmeter. The sub-control module calculates and monitors the actual fertilizer and water flow rate in real time through the pulse signal to ensure that the system can dynamically adjust the flow rate. Through the precise control and real-time monitoring of the fertilizer and water flow rate, the waste of fertilizer and water resources can be reduced, thereby improving the efficiency of fertilizer and water utilization and providing a more stable supply of nutrients and water for crop growth. The cooperation of the inlet electric ball valve and the Hall flowmeter ensures that the fertilizer and water machine can irrigate at a constant flow rate, so as to ensure that the crops are evenly irrigated, which is conducive to crop growth. In addition, the precise adjustment of the fertilizer and water flow rate can avoid problems such as excessive fertilizer and water damage to crops or too little fertilizer and water causing poor crop growth.

[0017] In any of the above technical solutions, after step S200, the control method also includes: step S210: if the flow mode is selected, the specified fertilizer water flow rate and the specified time are input, the main control module controls the driving module to extract the fertilizer water corresponding to the sub-control module, and the sub-control module controls the liquid inlet electric ball valve to make the actual fertilizer water flow rate the same as the specified fertilizer water flow rate, and closes the liquid inlet electric ball valve after running for a specified time; step S220: the Hall flowmeter generates a pulse signal in real time according to the actual fertilizer water flow rate, and sends the pulse signal to the sub-control module, the sub-control module calculates the actual fertilizer water flow rate according to the pulse signal, and compares the actual fertilizer water flow rate with the specified fertilizer water flow rate, if the actual fertilizer water flow rate is greater than the specified fertilizer water flow rate, the liquid inlet electric ball valve is controlled to reduce the actual fertilizer water flow rate, if the actual fertilizer water flow rate is less than the specified fertilizer water flow rate, the liquid inlet electric ball valve is controlled to increase the actual fertilizer water flow rate, if the actual fertilizer water flow rate is equal to the specified fertilizer water flow rate, the actual fertilizer water flow rate is not changed.

[0018] Users can set the specified fertilizer and water flow and fertilization time according to the specific needs of the crops, so as to achieve precise fertilization, which helps to improve the use effect of fertilizer and water. By specifying the flow and running time, the system can provide a stable fertilizer and water flow to avoid the negative impact on crop growth due to unstable water or fertilizer supply. Through the monitoring of the Hall flowmeter, the system compares the actual flow with the specified flow in real time, and can promptly correct the errors that may occur during the fertilization process to ensure the appropriate fertilizer and water ratio. In flow mode, the system can adjust the liquid inlet electric ball valve in real time to ensure that the actual fertilizer and water flow always remains at the specified value. Such adaptive ability can cope with changes under different environmental conditions. By ensuring that the actual fertilizer and water flow is consistent with the specified flow, the waste of fertilizer and water resources caused by improper flow is avoided, thereby achieving more efficient resource utilization.

[0019] In any of the above technical solutions, before step S100, the control method also includes a main control module controlling the stirring device to stir the fertilizer water.

[0020] Through the stirring device, fertilizer and water can be evenly and fully mixed to ensure that the concentration of fertilizer and water is consistent when applied, so that crops can evenly absorb the required nutrients. Stirring can prevent fertilizer precipitation or stratification, ensure that each application of fertilizer and water can provide maximum nutrients and improve fertilizer and water utilization efficiency. Regular stirring can reduce fertilizer precipitation and agglomeration, maintain the stability of liquid fertilizer and water, and avoid problems such as pipe blockage during use. Uniform fertilizer and water can effectively reduce the growth differences of crops caused by uneven nutrition, improve the overall effect of fertilization, and help crops grow evenly. By automatically controlling the stirring device, the need for manual stirring is eliminated, and the fertilizer and water to be applied can be prepared in a shorter time, improving work efficiency.

[0021] In any of the above technical solutions, before step S100, the control method also includes the main control module controlling the water level monitoring device to monitor the fertilizer water level, and if the fertilizer water level is lower than the specified water level, the main control module issues a fertilizer water shortage warning.

[0022] The water level monitoring device can detect the water level of fertilizer and water in real time, ensuring that users can grasp the storage status of fertilizer and water at any time, and provide data support for fertilization management. Setting the fertilizer and water shortage warning function allows users to know in advance that the fertilizer and water supply is insufficient, which helps to replenish fertilizer and water in time and avoid fertilization interruption. Through timely warning, it can effectively reduce the delay of fertilization plan caused by insufficient fertilizer and water, thereby improving the overall fertilization efficiency. Automated water level monitoring and warning reduce the frequency of manual inspections, reduce the workload, and are suitable for use in large-scale agricultural production.

[0023] In any of the above technical solutions, before step S100, the control method also includes: step S10: selecting a regional irrigation mode and selecting an area to be irrigated; step S20: the main control module controls the corresponding liquid outlet solenoid valve according to the selected area so that the fertilizer water is irrigated to the required area.

[0024] By selecting a specific irrigation area, precise fertilization and irrigation can be achieved to ensure that each crop obtains the required water and nutrients in the best growing environment. Fertilization is only applied to the areas that need irrigation to avoid waste of fertilizer and water, improve resource utilization efficiency, and reduce production costs. Users can flexibly select irrigation modes and areas based on factors such as crop growth and soil moisture, which enhances the adaptability of the system. Sometimes the amount of fertilizer and water is not enough to irrigate all areas at once. The regional irrigation mode can be used to irrigate by partitioning to avoid insufficient fertilizer and water during the irrigation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments and their drawings can be obtained based on the embodiments shown in these drawings without paying creative work.

[0026] Figure 1 It is a module diagram of a multi-channel constant-flow fertilizer water machine control system provided by an embodiment of the present invention.

[0027] Figure 2 It is a main flow chart of a control method of a multi-channel constant-flow fertilizer water machine control system provided by an embodiment of the present invention.

[0028] Figure 3 It is another flow chart of a control method of a multi-channel constant-flow fertilizer water machine control system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purpose, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0030] like Figure 1 As shown, an embodiment of the present invention provides a multi-channel constant-flow fertilizer water machine control system, which includes: a main control module; several sub-control modules, which are connected to the main control module; several liquid inlet electric ball valves, which are connected to the sub-control module, and the sub-control module controls the actual fertilizer water flow by controlling the liquid inlet electric ball valve; several Hall flow meters, which are connected to the sub-control module, and the Hall flow meters generate pulse signals according to the actual fertilizer water flow, and send the pulse signals to the sub-control modules; a driving module, which is connected to the main control module; wherein the sub-control module calculates and monitors the actual fertilizer water flow in real time through the pulse signal, and controls the liquid inlet electric ball valve to adjust the actual fertilizer water flow to achieve a constant flow effect; at least two liquid outlet solenoid valves, which are connected to the main control module; a stirring device, which is connected to the main control module; and several water level monitoring devices, which are connected to the main control module.

[0031] In this embodiment, the main control module is also connected to the 4G module and the HMI (Human Machine Interface). In this embodiment, a total of nine sub-control modules are provided, and sub-control modules one to nine respectively control the flow of nine kinds of fertilizer water. A certain sub-control module can be selected separately for operation through the main control module. Each sub-control module is provided with an inlet electric ball valve and a Hall flowmeter, and the inlet electric ball valve and the Hall flowmeter are both arranged on the fertilizer water inlet pipeline. The Hall flowmeter generates a corresponding pulse signal according to the actual fertilizer water flow in the fertilizer water inlet pipe, and sends the pulse signal to the sub-control module. The sub-control module calculates and monitors the actual fertilizer water flow in real time through the pulse signal, and controls the inlet electric ball valve to control the actual fertilizer water flow. The Hall flowmeter and the inlet electric ball valve cooperate with each other to make the actual fertilizer water flow constant, so that the fertilizer water machine can irrigate with a constant fertilizer water flow. And the Hall flowmeter measures the fertilizer water flow and displays it on the operation interface, so that the user can intuitively know the amount of fertilizer, which is more intuitive and easy to understand than the output according to the EC value and PH value in the prior art. In addition, the use of the liquid inlet electric ball valve can achieve stepless flow control, which can more accurately control the fertilizer water flow rate than the ordinary solenoid valve in the prior art, thereby achieving the effect of constant flow and uniform fertilization. The fertilizer water inlet pipe draws fertilizer water from the fertilizer water bucket. Each fertilizer water bucket is provided with a stirring device, which is connected to the main control module. The user can control the stirring device through the main control module, and control the stirring device to stir the soluble fertilizer in the fertilizer water bucket before irrigation so that it is completely dissolved in the water, and can also be stirred during the operation to avoid uneven fertilizer water concentration in the fertilizer water bucket due to long-term precipitation. In this embodiment, a total of four liquid outlet solenoid valves are provided. The user can control the switch of the four liquid outlet solenoid valves through the main control module. Each liquid outlet solenoid valve corresponds to an irrigation area, and is switched on and off as needed, thereby achieving the effect of accurately continuing to irrigate one or some areas. Each fertilizer water bucket is also provided with a water level monitoring device, which sends the water level data in the fertilizer water bucket to the general control module and displays it. The user can set a water level warning line, and issue an early warning when the water level is lower than the water level warning line, or observe the water level to determine whether to add fertilizer water. All pipelines need to be connected to the drive module, which is powered by the drive module. In this embodiment, the drive module is driven by a water pump, and the extraction and irrigation of fertilizer water and clean water in this system are powered by the drive module.

[0032] like Figure 2As shown, an embodiment of the present invention provides a control method for a multi-channel constant flow fertilizer water machine control system, which is used to control the multi-channel constant flow fertilizer water machine control system in any of the above embodiments, and includes: a main control module controls a stirring device to stir fertilizer water; step S100: select a certain sub-control module to operate; step S200: select a time mode or a flow mode; step S300: if the time mode is selected, the barrel diameter, water level and fertilization time are input, the main control module controls the drive module to extract fertilizer water corresponding to the sub-control module, the sub-control module calculates the theoretical fertilizer water flow according to the barrel diameter, water level and fertilization time, and then controls the liquid inlet electric ball valve to make the actual fertilizer water flow the same as the theoretical fertilizer water flow; step S400: the Hall flowmeter generates a pulse signal in real time according to the actual fertilizer water flow, and sends the pulse signal to the sub-control module, the sub-control module calculates the actual fertilizer water flow according to the pulse signal, compares the actual fertilizer water flow with the theoretical fertilizer water flow, and if the actual fertilizer water flow is greater than the theoretical fertilizer water flow, the liquid inlet electric ball valve is controlled to reduce If the actual fertilizer water flow rate is less than the theoretical fertilizer water flow rate, the liquid inlet electric ball valve is controlled to increase the actual fertilizer water flow rate. If the actual fertilizer water flow rate is equal to the theoretical fertilizer water flow rate, the actual fertilizer water flow rate is not changed; Step S210: If the flow mode is selected, the specified fertilizer water flow rate and the specified time are input, the main control module controls the driving module to extract fertilizer water corresponding to the sub-control module, and the sub-control module controls the liquid inlet electric ball valve to make the actual fertilizer water flow rate the same as the specified fertilizer water flow rate, and closes the liquid inlet electric ball valve after running for a specified time; Step S220: The Hall flowmeter generates a pulse signal in real time according to the actual fertilizer water flow rate, and sends the pulse signal to the sub-control module. The sub-control module calculates the actual fertilizer water flow rate according to the pulse signal, and compares the actual fertilizer water flow rate with the specified fertilizer water flow rate. If the actual fertilizer water flow rate is greater than the specified fertilizer water flow rate, the liquid inlet electric ball valve is controlled to reduce the actual fertilizer water flow rate. If the actual fertilizer water flow rate is less than the specified fertilizer water flow rate, the liquid inlet electric ball valve is controlled to increase the actual fertilizer water flow rate. If the actual fertilizer water flow rate is equal to the specified fertilizer water flow rate, the actual fertilizer water flow rate is not changed.

[0033] In this embodiment, the user pours soluble fertilizer into the fertilizer water bucket, and after the system draws clean water into the fertilizer water bucket, the stirring device is controlled by the main control module to stir until the soluble fertilizer is completely dissolved. After the fertilizer and water preparation is completed, select a sub-control module for operation, select the time mode or flow mode, if the time mode is selected, you need to enter the barrel diameter, water level and fertilization time, the sub-control module can calculate the total amount of fertilizer and water required for irrigation according to the barrel diameter and water level, and then calculate the theoretical fertilizer and water flow according to the fertilization time. According to the theoretical fertilizer and water flow, the sub-control module first roughly adjusts the liquid inlet electric ball valve. When irrigation starts, the Hall flowmeter generates a pulse signal in real time according to the actual fertilizer and water flow, and sends the pulse signal to the sub-control module. The sub-control module calculates the actual fertilizer and water flow according to the pulse signal, and compares the actual fertilizer and water flow with the theoretical fertilizer and water flow. If the actual fertilizer and water flow is greater than the theoretical fertilizer and water flow, the liquid inlet electric ball valve is controlled to reduce the actual fertilizer and water flow. If the actual fertilizer and water flow is less than the theoretical fertilizer and water flow, the liquid inlet electric ball valve is controlled to increase the actual fertilizer and water flow. If the actual fertilizer and water flow is equal to the theoretical fertilizer and water flow, the actual fertilizer and water flow will not be changed, so that the actual fertilizer and water flow meets the theoretical fertilizer and water flow, meets the time mode requirements, and has the effect of irrigation with a constant flow. If the flow mode is selected, the specified fertilizer water flow rate and the specified time are input. The sub-control module also cooperates with the Hall flowmeter through the liquid inlet electric ball valve to make the actual fertilizer water flow rate meet the specified fertilizer water flow rate, and irrigates at a constant flow rate. When the specified time is reached, the liquid inlet electric ball valve is closed to stop irrigation. While irrigating, the water level monitoring device monitors the fertilizer water level in real time. If the fertilizer water level is lower than the specified water level, the main control module issues a fertilizer water shortage warning to remind the user to add fertilizer water.

[0034] like Figure 3 As shown, before step S100, the control method also includes: step S10: selecting a regional irrigation mode and selecting an area to be irrigated; step S20: the main control module controls the corresponding liquid outlet solenoid valve according to the selected area so that the fertilizer water is irrigated to the required area.

[0035] In this embodiment, before irrigating with fertilizer and water, a regional irrigation mode can be selected. Each liquid outlet solenoid valve corresponds to an area. The area to be irrigated is selected according to demand, so that the fertilizer and water can be accurately irrigated to the required area. During the irrigation process, there may be a situation where the fertilizer and water in the fertilizer and water bucket cannot irrigate all areas at once. Therefore, regional irrigation can be selected. After irrigating one area, the fertilizer and water are replenished before irrigating other areas. Or sometimes different crops are planted in different areas, and the required fertilizer ratios are also different. After selecting a designated area according to demand, the corresponding fertilizer and water ratio is set according to the crops in the area, and then irrigation is carried out. After the irrigation is completed, other areas can be replaced and the corresponding fertilizer and water ratios can be reset to irrigate other crops, so as to achieve the effect of precise irrigation.

[0036] In the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0038] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A multi-channel constant flow fertilizer water machine control system, characterized in that: include: Main control module; A plurality of sub-control modules, wherein the sub-control modules are connected to the main control module; A plurality of liquid inlet electric ball valves, wherein the liquid inlet electric ball valves are connected to the sub-control module, and the sub-control module controls the actual fertilizer water flow rate by controlling the liquid inlet electric ball valves; A plurality of Hall flowmeters, wherein the Hall flowmeters are connected to the sub-control module, and the Hall flowmeters generate pulse signals according to the actual fertilizer water flow rate, and send the pulse signals to the sub-control module; A driving module, wherein the driving module is connected to the general control module; Among them, the sub-control module calculates and monitors the actual fertilizer water flow in real time through the pulse signal, and controls the liquid inlet electric ball valve to adjust the actual fertilizer water flow to achieve a constant flow effect.

2. The multi-channel constant flow fertilizer water machine control system according to claim 1 is characterized in that: It also includes at least two liquid outlet solenoid valves, and the liquid outlet solenoid valves are connected to the main control module.

3. The multi-channel constant flow fertilizer water machine control system according to claim 1 is characterized in that: It also includes a stirring device, which is connected to the main control module.

4. The multi-channel constant flow fertilizer water machine control system according to claim 1 is characterized in that: It also includes several water level monitoring devices, which are connected to the main control module.

5. A control method for a multi-channel constant-current fertilizer and water machine control system, used to control the multi-channel constant-current fertilizer and water machine control system as claimed in any one of claims 1 to 4, characterized in that: The control method comprises: Step S100: Select a sub-control module to operate; Step S200: Selecting a time mode or a flow mode; Step S300: If the time mode is selected, the barrel diameter, water level and fertilizer application time are input, and the main control module controls the driving module to extract fertilizer water corresponding to the sub-control module. The sub-control module calculates the theoretical fertilizer water flow rate according to the barrel diameter, the water level and the fertilizer application time, and then controls the liquid inlet electric ball valve to make the actual fertilizer water flow rate the same as the theoretical fertilizer water flow rate; Step S400: The Hall flowmeter generates a pulse signal in real time according to the actual fertilizer water flow rate, and sends the pulse signal to the sub-control module, the sub-control module calculates the actual fertilizer water flow rate according to the pulse signal, and compares the actual fertilizer water flow rate with the theoretical fertilizer water flow rate. If the actual fertilizer water flow rate is greater than the theoretical fertilizer water flow rate, the liquid inlet electric ball valve is controlled to reduce the actual fertilizer water flow rate. If the actual fertilizer water flow rate is less than the theoretical fertilizer water flow rate, the liquid inlet electric ball valve is controlled to increase the actual fertilizer water flow rate. If the actual fertilizer water flow rate is equal to the theoretical fertilizer water flow rate, the actual fertilizer water flow rate is not changed.

6. The control method of the multi-channel constant flow fertilizer water machine control system according to claim 5 is characterized in that: After step S200, the control method further includes: Step S210: If the flow mode is selected, a designated fertilizer water flow rate and a designated time are input, and the main control module controls the driving module to extract fertilizer water corresponding to the sub-control module, and the sub-control module controls the liquid inlet electric ball valve to make the actual fertilizer water flow rate the same as the designated fertilizer water flow rate, and closes the liquid inlet electric ball valve after running for the designated time; Step S220: The Hall flowmeter generates a pulse signal in real time according to the actual fertilizer water flow rate, and sends the pulse signal to the sub-control module, the sub-control module calculates the actual fertilizer water flow rate according to the pulse signal, and compares the actual fertilizer water flow rate with the designated fertilizer water flow rate. If the actual fertilizer water flow rate is greater than the designated fertilizer water flow rate, the liquid inlet electric ball valve is controlled to reduce the actual fertilizer water flow rate. If the actual fertilizer water flow rate is less than the designated fertilizer water flow rate, the liquid inlet electric ball valve is controlled to increase the actual fertilizer water flow rate. If the actual fertilizer water flow rate is equal to the designated fertilizer water flow rate, the actual fertilizer water flow rate is not changed.

7. The control method of the multi-channel constant flow fertilizer water machine control system according to claim 5 is characterized in that: Before step S100, the control method further includes the main control module controlling the stirring device to stir the fertilizer water.

8. The control method of the multi-channel constant flow fertilizer water machine control system according to claim 5 is characterized in that: Before step S100, the control method further includes the main control module controlling a water level monitoring device to monitor the fertilizer water level. If the fertilizer water level is lower than a specified water level, the main control module issues a fertilizer water shortage warning.

9. The control method of the multi-channel constant flow fertilizer water machine control system according to claim 5 is characterized in that: Before step S100, the control method further includes: Step S10: Select a regional irrigation mode and select an area to be irrigated; Step S20: The general control module controls the corresponding liquid outlet solenoid valve according to the selected area, so that the fertilizer water is irrigated to the required area.

Images