Method for adjusting fertilization flow and movable irrigation head

Abstract

The invention provides a method for adjusting fertilization flow and a movable irrigation head, and is applied to the field of agriculture. Due to the fact that the jurisdiction range of the fixed type head part is limited, and the movable type irrigation head part is more applied to agricultural production, the movable type irrigation head part can automatically adjust the fertilization flow, it is guaranteed that the water-fertilizer ratio is within a reasonable range, the conditions of insufficient fertility and excessive fertility are avoided, and due to the fact that the adjusting process is automatic, the fertilization efficiency is greatly improved. Operation by agricultural producers is not needed, and development of intelligent agriculture is promoted.

Description

Technical Field

[0001] The present application relates to the field of agricultural technology, and more particularly, to a method for regulating fertilizer flow and a mobile irrigation head. Background Art

[0002] The fixed head is generally a fixed pump house designed according to the field well house or irrigation river and channel. It is the core system of water supply and fertilization of the field irrigation system. However, the scope of jurisdiction of the fixed head is limited, usually less than 500 mu, and the maximum is generally not more than 1,000 mu. The main reasons for the limited jurisdiction of the fixed head are as follows: 1. The groundwater or water supply system is insufficient, and it is difficult to meet the large field irrigation needs; 2. The area is too large, and the water pump of the fixed head is required to be high. The water pump has a large power and a thick pipe diameter, and the pump house has a high investment cost and high maintenance cost; 3. The area is too large, and the field pipe network is too complicated. The farther away from the pump house, the greater the pressure loss, and it is difficult to ensure the balance of pressure and flow in each irrigation area. Therefore, more and more agricultural producers have begun to choose mobile irrigation heads. However, the current mobile irrigation heads have a relatively single function and can only perform simple water and fertilizer mixing. The accuracy is not high and can not meet the needs of agricultural producers. Based on this, how to ensure the accuracy of water and fertilizer mixing has become a technical problem that needs to be solved urgently. Summary of the invention

[0003] The present application provides a method for adjusting the fertilizer flow and a mobile irrigation head, which can automatically adjust the fertilizer flow so that the water-fertilizer ratio is within a set range, thereby ensuring the fertilization effect. The adjustment process is automatic and does not require operation by agricultural producers, which helps promote the development of smart agriculture.

[0004] In a first aspect, a method for regulating fertilizer flow is provided, the method being applied to a mobile irrigation head, the method comprising: in response to a first instruction, starting a pump (1428) and a fertilizer suction port valve (1427) in a first operating condition, wherein the first instruction is used to indicate the start of fertilization, the pump (1428) is used to suck fertilizer, the fertilizer suction port valve (1427) is a ball valve, the frequency of the pump (1428) corresponding to the first operating condition is full frequency, the opening of the fertilizer suction port valve (1427) is a first opening, and the first opening is greater than or equal to the minimum opening of the fertilizer suction port valve (1427); when it is detected that the fertilizer flow is greater than a target flow, and the absolute value of the difference between the fertilizer flow and the target flow is greater than or equal to a first threshold and less than or equal to a second threshold, reducing the frequency of the pump (1428) so that the absolute value of the difference between the fertilizer flow and the target flow is less than the first threshold; or when it is detected that the fertilizer flow is less than the target flow, and the absolute value of the difference between the fertilizer flow and the target flow is greater than or equal to a second threshold, When the fertilizer flow rate is greater than the first threshold and is less than or equal to the second threshold, the opening of the fertilizer inlet valve (1427) is increased, or the opening of the fertilizer inlet valve (1427) is increased first, and when the fertilizer flow rate is greater than the target flow rate and the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the second threshold, the frequency of the pump (1428) is reduced so that the absolute value of the difference between the fertilizer flow rate and the target flow rate is less than the first threshold; or when the fertilizer flow rate and the target flow rate are detected to be greater than or equal to the first threshold, the frequency of the pump (1428) is reduced. When the absolute value of the difference between the fertilizer flow and the target flow is greater than the second threshold, the opening of the fertilizer intake valve (1427) is adjusted according to the difference between the fertilizer flow and the target flow, or the opening of the fertilizer intake valve (1427) is adjusted first, and when the fertilizer flow is greater than the target flow and the difference between the fertilizer flow and the target flow is greater than or equal to the first threshold and less than or equal to the second threshold, the frequency of the pump (1428) is reduced so that the absolute value of the difference between the fertilizer flow and the target flow is less than the first threshold.

[0005] In the embodiment of the present application, when the mobile irrigation head turns on the fertilization function, the fertilizer intake valve can be opened at a first opening and the pump can be turned on at full frequency, and the fertilizer intake valve and the pump can be dynamically adjusted according to the absolute value of the difference between the fertilization flow rate and the target flow rate, thereby ensuring that the fertilization flow rate is always within a reasonable range, that is, the water-fertilizer ratio is within a reasonable range, avoiding insufficient fertility and excessive fertility. Since the adjustment process is automatic, no operation is required by agricultural producers, which helps to promote the development of smart agriculture.

[0006] In combination with the first aspect, in certain implementations of the first aspect, after reducing the frequency of the pump (1428), or adjusting the opening of the fertilizer suction port valve (1427), or first adjusting the opening of the fertilizer suction port valve (1427) and then reducing the frequency of the pump (1428), the method further includes: when it is detected that the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the second threshold, adjusting the frequency of the pump (1428) according to the difference between the fertilizer flow rate and the target flow rate, so that the absolute value of the difference between the fertilizer flow rate and the target flow rate is less than When the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the first threshold value; or when it is detected that the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the second threshold value, the opening of the fertilizer intake valve (1427) is adjusted according to the difference between the fertilizer flow rate and the target flow rate, or the opening of the fertilizer intake valve (1427) is adjusted first, and after the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is adjusted according to the difference between the fertilizer flow rate and the target flow rate, so that the absolute value of the difference between the fertilizer flow rate and the target flow rate is less than the first threshold value.

[0007] In combination with the first aspect, in certain implementations of the first aspect, when it is detected that the absolute value of the difference between the fertilizer flow and the target flow is greater than or equal to the first threshold and less than or equal to the second threshold, the frequency of the pump (1428) is adjusted according to the difference between the fertilizer flow and the target flow, including: when the absolute value of the difference between the fertilizer flow and the target flow is greater than a third threshold and less than or equal to the second threshold, the frequency of the pump (1428) is adjusted with a first adjustment step according to the difference between the fertilizer flow and the target flow, wherein the third threshold is greater than the first threshold; or when the absolute value of the difference between the fertilizer flow and the target flow is greater than a third threshold and less than or equal to the second threshold. When the value is greater than the fourth threshold and less than or equal to the third threshold, the frequency of the pump (1428) is adjusted with a second adjustment step according to the difference between the fertilizer flow and the target flow, wherein the fourth threshold is greater than the first threshold, and the absolute value of the second adjustment step is smaller than the absolute value of the first adjustment step; or when the absolute value of the difference between the fertilizer flow and the target flow is greater than or equal to the first threshold and less than or equal to the fourth threshold, the frequency of the pump (1428) is adjusted with a third adjustment step according to the difference between the fertilizer flow and the target flow, wherein the absolute value of the third adjustment step is smaller than the absolute value of the second adjustment step.

[0008] In combination with the first aspect, in certain implementations of the first aspect, when it is detected that the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the second threshold, the opening of the fertilizer intake port valve (1427) is adjusted according to the difference between the fertilizer flow rate and the target flow rate, including: when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the second threshold and less than or equal to a fifth threshold, the opening of the fertilizer intake port valve (1427) is adjusted with a fourth adjustment step according to the difference between the fertilizer flow rate and the target flow rate; or when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the fifth threshold, the opening of the fertilizer intake port valve (1427) is adjusted with a fourth adjustment step according to the difference between the fertilizer flow rate and the target flow rate. threshold and is less than or equal to the sixth threshold, the opening of the fertilizer intake valve (1427) is adjusted with a fifth adjustment step according to the difference between the fertilizer flow rate and the target flow rate, wherein the absolute value of the fifth adjustment step is greater than the absolute value of the fourth adjustment step; or when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the sixth threshold, the opening of the fertilizer intake valve (1427) is adjusted with a sixth adjustment step according to the difference between the fertilizer flow rate and the target flow rate, wherein the sixth threshold is greater than the second threshold, and the absolute value of the sixth adjustment step is greater than the absolute value of the fifth adjustment step.

[0009] In combination with the first aspect, in certain implementations of the first aspect, when it is detected that the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the second threshold value, the opening of the fertilizer suction port valve (1427) is first adjusted according to the difference between the fertilizer flow rate and the target flow rate, and after the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is adjusted according to the difference between the fertilizer flow rate and the target flow rate, including: when the fertilizer flow rate When the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the second threshold value and less than or equal to the fifth threshold value, the opening of the fertilizer intake port valve (1427) is adjusted with a fourth adjustment step according to the difference between the fertilizer flow rate and the target flow rate, and after the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is adjusted according to the difference between the fertilizer flow rate and the target flow rate; or when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the first threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is adjusted again according to the difference between the fertilizer flow rate and the target flow rate. When the fertilizer flow rate is greater than or equal to the fifth threshold and is less than or equal to the sixth threshold, the opening of the fertilizer inlet valve (1427) is adjusted with a fifth adjustment step according to the difference between the fertilizer flow rate and the target flow rate, and after the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the second threshold, the frequency of the pump (1428) is adjusted according to the difference between the fertilizer flow rate and the target flow rate, wherein the absolute value of the fifth adjustment step is greater than the absolute value of the fourth adjustment step; or when the fertilizer flow rate is greater than or equal to the target flow rate When the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the sixth threshold value, the opening of the fertilizer intake valve (1427) is adjusted with a sixth adjustment step according to the difference between the fertilizer flow rate and the target flow rate, and after the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is adjusted again according to the difference between the fertilizer flow rate and the target flow rate, wherein the sixth threshold value is greater than the second threshold value, and the absolute value of the sixth adjustment step is greater than the absolute value of the fifth adjustment step.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the first opening degree is determined according to the target flow rate.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the target flow is determined based on a water-fertilizer ratio and an irrigation flow.

[0012] In combination with the first aspect, in certain implementations of the first aspect, the target flow rate is preset.

[0013] In a second aspect, a mobile irrigation head is provided, the mobile irrigation head comprising a mobile warehouse (110), an irrigation pipe system (120), a fertilizer system (130), and a fertilization irrigation control system (140); the mobile warehouse (110) is provided with a water inlet (111) and a water outlet (112); the water inlet (111) is connected to a water source, a water pump is provided in the water source, the water outlet (111) is connected to an irrigation channel in a farmland, the irrigation pipe system (120) is accommodated in the mobile warehouse (110), the irrigation pipe system (120) comprises a water inlet pipe (121) and a water outlet pipe (122); the water inlet pipe (121) is connected to the water inlet (111), and the water outlet pipe (122) is connected to the water inlet (111). (122) is connected to the water outlet (112), the fertilizer system (130) is accommodated in the mobile warehouse (110), the fertilizer system (130) comprises a fertilizer barrel (131) and a water injection pipe (132), the water injection pipe (132) is connected to the water outlet pipe (122) in the irrigation pipe system (120), and is used to inject water into the fertilizer barrel (131), the fertilization irrigation control system (140) is accommodated in the mobile warehouse (110), comprises a control module (141), a pipe assembly (142), the pipe assembly (142) is connected to the irrigation pipe system (120) and the fertilizer system (130), the pipe assembly (142) comprises: a water inlet assembly (1401), a water outlet assembly (1402), and a water inlet assembly (1403). The invention relates to an irrigation system comprising an irrigation pipe system (120), a fertilizer absorption component (1403), and a fertilizer mixing component (1404); the water inlet component (1401) and the water outlet component (1402) are connected to the irrigation pipe system (120); the water inlet component (1401) comprises a water inlet sub-pipeline (1424); the water outlet component (1402) comprises a water outlet sub-pipeline (1425); the water inlet sub-pipeline (1424) and the water outlet sub-pipeline (1425) are connected to the water outlet pipe (122) of the irrigation pipe system (1220); the fertilizer absorption component (1403) is connected to the fertilizer system (130); the fertilizer absorption component (1403) comprises a fertilizer absorption sub-pipeline (1426) and a fertilizer absorption port valve (1427); and the fertilizer mixing component (1404) is connected to the fertilizer system (130); the fertilizer absorption component (1403) comprises a fertilizer absorption sub-pipeline (1426) and a fertilizer absorption port valve (1427); and the fertilizer mixing component (1404) is connected to the fertilizer system (130); and the fertilizer absorption component (1403) comprises a fertilizer absorption sub-pipeline (1426) and a fertilizer absorption port valve (1427). (1404) comprises: a pump (1428), a first fertilizer mixing pipe (1429) and a second fertilizer mixing pipe (1430); the fertilizer mixing component (1404) is provided with a flow detector (1433); one end of the first fertilizer mixing pipe (1429) is connected to the water inlet sub-pipeline (1424) and the fertilizer suction sub-pipeline (1426); the other end of the first fertilizer mixing pipe (1429) is connected to the pump (1428); one end of the second fertilizer mixing pipe (1430) is connected to the pump (1428); the other end of the second fertilizer mixing pipe (1430) is connected to the water outlet sub-pipeline (1425); the control module (141) is used to execute the first aspect and any possible implementation method of the first aspect.

[0014] In a third aspect, a mobile irrigation head is provided, the mobile irrigation head comprising a mobile warehouse (110), an irrigation pipe system (120), a fertilizer system (130), and a fertilization irrigation control system (140), wherein the irrigation pipe system (120), the fertilizer system (130), and the fertilization irrigation control system (140) are accommodated in the mobile warehouse (110), and the fertilization irrigation control system (140) comprises a control module (141), a pipe assembly (142), and the pipe assembly (143). The component (142) is connected to the irrigation pipe system (120) and the fertilizer system (130) to mix water and fertilizer. The pipe component (142) includes a fertilizer inlet valve (1427) and a pump (1428). The fertilizer inlet valve (1427) and the pump (1428) are used to control the flow of fertilizer. The pipe component (142) is provided with a flow detector (1433). The control module (141) is used to execute the first aspect and any possible implementation method of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural block diagram of a mobile irrigation head provided in an embodiment of the present application.

[0016] Figure 2 It is a schematic side view of a mobile warehouse provided in an embodiment of the present application.

[0017] Figure 3 It is a schematic three-dimensional structural diagram of the irrigation head provided in an embodiment of the present application.

[0018] Figure 4 It is another schematic three-dimensional structural diagram of the irrigation head provided in an embodiment of the present application.

[0019] Figure 5 It is a schematic stereoscopic diagram of a pipeline component in a fertilization and irrigation control system provided in an embodiment of the present application.

[0020] Figure 6 yes Figure 5 A partial enlarged schematic diagram of part A.

[0021] Figure 7 It is a schematic flow chart of the method for adjusting fertilization flow provided in an embodiment of the present application. DETAILED DESCRIPTION

[0022] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0023] The terms used in the following embodiments are only for the purpose of describing specific embodiments, and are not intended to be used as limitations on the present application. As used in the specification and the appended claims of the present application, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context. It should also be understood that in the following embodiments of the present application, "at least one", "one or more" refer to one, two or more. The term "and / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0024] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0025] The fixed head is generally a fixed pump house designed according to the field well house or irrigation river and channel. It is the core system of water supply and fertilization of the field irrigation system. However, the scope of jurisdiction of the fixed head is limited, usually less than 500 mu, and the maximum is generally not more than 1,000 mu. The main reasons for the limited jurisdiction of the fixed head are as follows: 1. The groundwater or water supply system is insufficient, and it is difficult to meet the large field irrigation needs; 2. The area is too large, and the water pump of the fixed head is required to be high. The water pump has a large power and a thick pipe diameter, and the pump house has a high investment cost and high maintenance cost; 3. The area is too large, and the field pipe network is too complicated. The farther away from the pump house, the greater the pressure loss, and it is difficult to ensure the balance of pressure and flow in each irrigation area. Therefore, more and more agricultural producers have begun to choose mobile heads. However, the current mobile irrigation heads have a relatively single function and can only perform simple water and fertilizer mixing. The accuracy is not high and cannot meet the needs of agricultural producers. Based on this, how to ensure the accuracy of water and fertilizer mixing has become a technical problem that needs to be solved urgently.

[0026] The following will first combine Figure 1-Figure 6 The mobile irrigation head provided in the embodiment of the present application is introduced.

[0027] Figure 1 A schematic structural diagram of a mobile irrigation head provided in an embodiment of the present application is shown.

[0028] like Figure 1 As shown, the mobile irrigation head 100 includes: a mobile warehouse 110, an irrigation pipe system 120, a fertilizer system 130 and a fertilization and irrigation control system 140.

[0029] The mobile warehouse 110 is provided with a water inlet and a water outlet. The water inlet is connected to a water source in which a water pump is provided, and the water outlet is connected to an irrigation channel in the farmland.

[0030] The irrigation pipe system 120 is accommodated in the mobile bin 110. The irrigation pipe system 120 includes an inlet pipe, an outlet pipe and a filter assembly, wherein the inlet pipe is connected to the water inlet of the mobile bin 110, the outlet pipe is connected to the water outlet of the mobile bin 110, and the filter assembly is connected between the inlet pipe and the outlet pipe.

[0031] The fertilizer system 130 is accommodated in the mobile warehouse 110. The fertilizer system 130 includes a fertilizer barrel and a water injection pipe, and the water injection pipe is connected to the water outlet pipe in the irrigation pipe system 120 for injecting water into the fertilizer barrel.

[0032] The fertilization and irrigation control system 140 is also contained in the mobile bin 110. The fertilization and irrigation control system 140 includes a control module and a pipeline assembly, which is connected to the irrigation pipeline system 120 and the fertilizer system 130 to achieve fertilizer mixing. The control module is used to control the pipeline assembly to adjust the fertilization parameters of the irrigation head 100, such as the fertilization flow rate.

[0033] As an example, Figure 2 A schematic side view of a mobile bin 110 is shown.

[0034] like Figure 2 As shown, a water inlet 111 and a water outlet 112 may be provided on the same side wall of the mobile warehouse 110. The water inlet 111 may be connected to a water source through a pipe, and water in the water source may enter the water inlet 111 through a pipe under the action of a water pump. The water outlet 112 may be connected to an irrigation channel in a farmland through a pipe. The water entering through the water inlet 111 may be processed by various systems inside the mobile warehouse 110, and then may flow out through the water outlet 112, thereby realizing precise irrigation and fertilization of crops in the farmland.

[0035] In addition to the water inlet 111 and the water outlet 112, the mobile warehouse 110 may also be provided with a power interface, a water pump control interface, etc., for connecting a power line and a water pump control line, etc. The power line and the water pump control line may be connected to the control system inside the mobile warehouse 110 through the interface on the mobile warehouse 110.

[0036] The irrigation pipe system 120 includes: an inlet pipe, an outlet pipe and a filter assembly; the inlet pipe can be connected to the water inlet 111 of the mobile warehouse 110, and the outlet pipe can be connected to the water outlet 112 of the mobile warehouse 110. A filter assembly is connected between the inlet pipe and the outlet pipe, and the filter assembly is used to filter the water entering through the inlet pipe, so that the filtered water flows into the farmland through the outlet pipe for irrigation.

[0037] The fertilizer system 130 includes: a fertilizer barrel and a water injection pipe, wherein the fertilizer barrel is used to contain source fertilizer, the water injection pipe can be arranged corresponding to the inlet of the fertilizer barrel, and the water injection pipe can be connected to the outlet pipe of the irrigation pipe system 120. In addition to flowing into the farmland for irrigation, the water in the outlet pipe can also flow into the fertilizer barrel through the water injection pipe to dilute the source fertilizer in the fertilizer barrel, thereby adjusting the parameters of the fertilizer, such as electrical conductivity (EC), potential of hydrogen (PH), etc.

[0038] In the irrigation head 100, in addition to the mobile bin 110, the irrigation pipe system 120 and the fertilizer system 130, it also includes a core part - a fertilization irrigation control system 140. The fertilization irrigation control system 140 can be used to control the fertilization parameters of the irrigation head 100, wherein the fertilization parameters include the fertilization flow rate.

[0039] Specifically, the fertilization and irrigation control system 140 may include a control module and a pipeline assembly. The pipeline assembly may include a plurality of pipelines and valves and other components for connecting the irrigation pipeline system 120 and the fertilizer system 130. Specifically, the pipeline assembly may be connected to the water outlet pipeline in the irrigation pipeline system 120 and the fertilizer barrel in the fertilizer system 130.

[0040] In addition, since the pipeline assembly is connected to the irrigation pipeline system 120 and the fertilizer system 130 to achieve fertilizer mixing, the control module can also be used to control components in the pipeline assembly (such as valves, pumps, etc.) to control the flow of fertilizer during the fertilizer mixing process.

[0041] As an example and not a limitation, the above-mentioned control module includes but is not limited to: a programmable logic controller (PLC), a programmable automation controller (PAC), an embedded controller, etc. The embodiments of the present application do not limit the specific type of the control module.

[0042] Figure 3 A schematic three-dimensional structural diagram of the irrigation head 100 provided in an embodiment of the present application is shown. In this schematic diagram, in order to facilitate observation of various system structures inside the mobile warehouse 110, the four side walls and the top wall of the mobile warehouse 110 are hidden, and only the bottom plate of the mobile warehouse 110 and related structures such as the traction structure are retained.

[0043] See also Figure 3 The interior of the irrigation head 100 mainly contains three parts: an irrigation pipe system 120, a fertilizer system 130 and a fertilization and irrigation control system 140.

[0044] Next, first combine Figure 3 The specific structure of the irrigation pipe system 120 in the irrigation head 100 is introduced.

[0045] like Figure 3 As shown, the irrigation pipe system 120 mainly includes: an inlet pipe 121 , an outlet pipe 122 , and an intermediate pipe 123 .

[0046] Continue to see Figure 3 The irrigation pipe system 120 further includes a flow detector 124 , which can monitor the irrigation flow in the irrigation pipe system 120 in real time by detecting the irrigation flow of the intermediate pipe 123 .

[0047] As an example, the flow detector 124 may be an ultrasonic flow meter. In an alternative embodiment, the flow detector 124 may be other types of flow meters, which are not specifically limited in the present application.

[0048] Optionally, in some embodiments, the detection value of the flow detector 124 can be transmitted to the fertilization and irrigation control system 140 in a wired or wireless manner, so that the fertilization and irrigation control system 140 can perform the adjustment of the fertilization operation or the irrigation operation.

[0049] Next, combine Figure 3 The specific structure of the fertilizer system 130 in the irrigation head 100 is introduced.

[0050] like Figure 3As shown, the fertilizer system 130 mainly includes: a fertilizer barrel 131 and a water injection pipe 132. The fertilizer barrel 131 can be arranged between the water inlet pipe 121 and the water outlet pipe 122 in the irrigation pipe system 120, so as to make full use of the space in the mobile warehouse 110 and facilitate the connection between the fertilizer barrel 131 and the irrigation pipe system 120. One end of the water injection pipe 132 can be connected to the top of the fertilizer barrel 131, and the other end can be connected to the water outlet pipe 122 in the irrigation pipe system 120, so that the aqueous solution flowing out of the water outlet pipe 122 can enter the fertilizer barrel 131 through the water injection pipe 132 to dilute the source fertilizer in the fertilizer barrel 131.

[0051] Figure 4 FIG. 2 shows another schematic three-dimensional structural diagram of the irrigation head 100 provided in an embodiment of the present application. Figure 4 and Figure 3 It is a stereoscopic image of the same irrigation head 100 at different viewing angles.

[0052] like Figure 4 As shown, the fertilization and irrigation control system 140 may be an integrated machine for implementing fertilization and irrigation and water pump regulation. Specifically, the fertilization and irrigation control system 140 may include: a control module 141 and a pipeline component 142.

[0053] As described above, the control module 141 may include, for example, a control system of a type such as a PLC.

[0054] The pipe assembly 142 can be connected to the irrigation pipe system 120 and the fertilizer system 130 through external connecting pipes. Specifically, the pipe assembly 142 may include a water inlet sub-pipeline, a water outlet sub-pipeline, and a fertilizer suction sub-pipeline, and the three sub-pipelines can be connected to the irrigation pipe system 120 and the fertilizer system 130 through three connecting pipes, respectively.

[0055] Figure 5 A schematic three-dimensional diagram of a pipeline assembly 142 in a fertilization and irrigation control system 140 provided in an embodiment of the present application is shown. In this schematic diagram, in order to facilitate observation of the specific structure of the pipeline assembly 142, the left side wall of the cabinet where the pipeline assembly 142 is located is hidden.

[0056] like Figure 5 As shown, the pipeline component 142 includes: a water inlet component 1401, a water outlet component 1402, a fertilizer absorption component 1403 and a fertilizer mixing component 1404. The water inlet component 1401 and the water outlet component 1402 are connected to the irrigation pipeline system 120, the fertilizer absorption component 1403 is connected to the fertilizer system 130, and the fertilizer mixing component 1404 is used to mix the water in the water inlet component 1401 and the fertilizer in the fertilizer system 130 to transmit them to the water outlet component 1402.

[0057] Figure 6Shows Figure 5 A partial enlarged schematic diagram of part A.

[0058] like Figure 6 As shown, Figure 6 The water inlet component 1401 may include: a water inlet sub-pipeline 1424 , and a water inlet 1421 of the water inlet sub-pipeline 1424 is connected to the water outlet pipe 122 of the above-mentioned irrigation pipe system 120 .

[0059] Figure 6 The water outlet assembly 1402 may include: a water outlet sub-pipe 1425, the water outlet 1422 of which is connected to the water outlet pipe 122 of the irrigation pipe system 120. Optionally, the position where the water outlet 1422 is connected to the water outlet pipe 122 may be located upstream of the position where the water inlet 1421 is connected to the water outlet pipe 122.

[0060] Continue to see Figure 6 , the above Figure 5 The fertilizer suction component 1403 may include: a fertilizer suction sub-pipeline 1426, and a fertilizer suction port 1423 of the fertilizer suction sub-pipeline 1426 is connected to the fertilizer barrel 131 of the above-mentioned fertilizer system 130.

[0061] Optionally, a fertilizer suction port valve 1427 may be provided on the fertilizer suction sub-pipeline 1426, and the fertilizer suction port valve 1427 may control the flow of fertilizer passing through the fertilizer suction sub-pipeline 1426, thereby controlling the fertilization flow. In some examples, the fertilizer suction port valve 1427 may be an electric ball valve, in which the opening ratio of the valve may be controlled by controlling the rotation of the ball in the valve.

[0062] In some embodiments, the fertilizer suction port valve 1427 can be connected to the control module 141 in the fertilization and irrigation control system 140 by wire or wireless means, and the control module 141 can control the opening ratio of the fertilizer suction port valve 1427, thereby controlling the flow of fertilizer in the fertilizer suction sub-pipeline 1426 to control the fertilization flow of the irrigation head 100.

[0063] Continue to see Figure 6 As shown above Figure 5 The fertilizer mixing component 1404 includes: a pump 1428, a first fertilizer mixing pipe 1429 and a second fertilizer mixing pipe 1430, one end of the first fertilizer mixing pipe 1429 is connected to the water inlet sub-pipeline 1424 and the fertilizer suction sub-pipeline 1426, the other end of the first fertilizer mixing pipe 1429 is connected to the pump 1428, one end of the second fertilizer mixing pipe 1430 is connected to the pump 1428, and the other end of the second fertilizer mixing pipe 1430 is connected to the water outlet sub-pipeline 1425. The control module 141 can control the frequency of the pump 1428 to control the fertilizer flow rate of the irrigation head 100.

[0064] The first fertilizer mixing pipeline 1429 is located below the second fertilizer mixing pipeline 1430. The first fertilizer mixing pipeline 1429 is provided with a water outlet valve 1431. When the irrigation head 100 stops working, the water outlet valve 1431 is used to discharge the liquid remaining in the pump 1428.

[0065] Optionally, in the embodiment of the present application, the first fertilizer mixing pipe 1429 can be connected to the water inlet sub-pipeline 1424 and the fertilizer suction sub-pipeline 1426 through the ejector 1432.

[0066] A flow detector 1433 may be provided in the fertilizer mixing component 1404 , and the flow detector 1433 may be connected to the fertilizer suction sub-pipeline 1426 .

[0067] In the embodiment of the present application, the flow value detected by the flow detector 1433 is called the fertilization flow, and the fertilization flow is also called the fertilizer flow.

[0068] In other embodiments of the present application, flow detectors 1433 may be provided in other pipes (e.g., the water inlet sub-pipe 1424, the water outlet sub-pipe 1425, the first mixing pipe 1429, the second mixing pipe 1430, etc.). When multiple flow detectors 1433 are provided, the mobile irrigation head may determine the fertilization flow rate according to the flow values ​​detected by the multiple flow detectors 1433. For example, the mobile irrigation head may calculate the average of the flow values ​​detected by the multiple flow detectors 1433, and determine the average value as the fertilization flow rate.

[0069] The flow detector 1433 can be connected to the control module 141 via wired or wireless means, so that the control module 141 can receive the real-time detected fertilizer flow to control the pump 1428 and the fertilizer suction valve 1427, thereby adjusting the fertilizer flow of the irrigation head 100.

[0070] In the above embodiment, the control module 141 can control and adjust the fertilizer flow rate of the irrigation head 100 by controlling the fertilizer suction port valve 1427 provided on the fertilizer suction sub-pipeline 1426 and controlling the frequency of the pump 1428 .

[0071] Optionally, in some embodiments of the present application, the fertilization and irrigation control system 140 also includes: a wireless communication module, which is used to receive wireless control commands and transmit the wireless control commands to the control module 141, so that the control module 141 controls the fertilization flow of the irrigation head 100 according to the wireless control commands.

[0072] As an example, the wireless communication module includes but is not limited to: a wireless local area network communication module, a wireless wide area network communication module, etc. Among them, the wireless wide area network communication module includes: a cellular network (for example: 2G, 3G, 4G, 5G, etc.) module, a satellite communication module, etc. The wireless local area network communication module includes: a Wi-Fi communication module, a Bluetooth communication module, etc. The embodiment of the present application does not limit the specific method of the wireless communication.

[0073] In a specific implementation, the user can send relevant instructions to the fertilization and irrigation control system 140 through an application (Application, App) on a smart terminal and a wireless network, so that the fertilization and irrigation control system 140 can control the fertilization flow rate according to the user's instructions.

[0074] Optionally, in some embodiments of the present application, the fertilization and irrigation control system 140 further includes: a user interaction module for receiving user input commands and sending the input commands to the control module 141, so that the control module 141 can control the fertilization flow of the irrigation head 100 according to the input commands.

[0075] As an example, return to Figure 4 and Figure 5 As shown, in the fertilization and irrigation control system 140, the cabinet where the control module 141 is located can be provided with a display panel and user interaction modules such as buttons, and the user can input commands to the control module 141 through buttons or a display panel with a touch function, such as fertilizer flow.

[0076] It is understandable that the user interaction module can be various types of user input devices such as keyboards, microphones, handwriting boards, etc. in addition to the display panel and buttons shown in the figure, and this application does not make specific limitations on this.

[0077] As described above, in order to accurately adjust and control fertilization parameters, an embodiment of the present application provides a method for adjusting fertilization flow, which can control the fertilization flow to ensure the fertilization effect.

[0078] Figure 7 A schematic flow chart of a method 700 for adjusting fertilization flow provided in an embodiment of the present application is shown. The method 700 is applied to the mobile irrigation head mentioned above, such as Figure 7 As shown, the method 700 includes:

[0079] S701, in response to a first instruction, start the pump 1428 and the fertilizer intake valve 1427 in a first operating condition, wherein the first instruction is used to instruct the start of fertilization, the frequency of the pump 1428 corresponding to the first operating condition is full frequency, the opening of the fertilizer intake valve 1427 is a first opening, and the first opening is greater than or equal to the minimum opening of the fertilizer intake valve 1427.

[0080] After receiving the first instruction, the mobile irrigation head determines that the first instruction is used to start fertilization, and then starts the pump 1428 at full frequency and opens the fertilizer intake valve 1427 at the first opening.

[0081] In some embodiments, the minimum opening of the fertilizer inlet valve 1427 is 2%.

[0082] In some embodiments, the full frequency is 50 Hz.

[0083] In some embodiments, the first instruction may be issued by a user through a user interaction module.

[0084] In some embodiments, the first instruction may be issued by a smart agriculture processing platform, that is, the smart agriculture processing platform may detect various data in agricultural production, and when determining the need for fertilization based on the data, may issue a first instruction to a mobile irrigation head.

[0085] In some embodiments, the first instruction may be issued by a user through a terminal device.

[0086] In some embodiments, the first opening degree may be determined according to a target flow rate.

[0087] When the mobile irrigation head determines the first opening according to the target flow rate, the following possible implementation methods may be included:

[0088] In a possible implementation, the mobile irrigation head is preset with a correspondence table of target flow and first opening. After the mobile irrigation head determines the target flow, the first opening can be obtained by querying the correspondence table of target flow and first opening.

[0089] For example, when the target flow rate is 0.5m 3 / h, the first opening is 50%, when the target flow rate is 0.75m 3 / h, the first opening degree is 75%.

[0090] It can be understood that in this possible implementation, for the target flow rate and the first opening degree that are not recorded in the corresponding table of the target flow rate and the first opening degree, the first opening degree can be calculated by interpolation method.

[0091] In a possible implementation, the mobile irrigation head is preset with a calculation formula, the independent variable of the calculation formula is the target flow rate, and the dependent variable is the first opening degree, so that the mobile irrigation head can determine the first opening degree after determining the target flow rate.

[0092] It should be noted that the above two possible implementations are that when the pump 1428 of the mobile irrigation head is at full frequency, the mobile irrigation head determines the first opening according to the target flow rate.

[0093] Before the mobile irrigation head determines the first opening according to the target flow rate, the mobile irrigation head may also determine the target flow rate. When the mobile irrigation head determines the target flow rate, the following possible implementation methods may be included:

[0094] In a possible implementation, the first instruction includes a target flow rate, and the mobile irrigation head can determine the target flow rate according to the first instruction.

[0095] In a possible implementation, the first instruction includes a water-fertilizer ratio, and the mobile irrigation head can determine the target flow rate according to the water-fertilizer ratio and the irrigation flow rate.

[0096] For example, a mobile irrigation head can determine the target flow rate according to formula (1).

[0097]

[0098] Among them, V g is the target flow rate, V m is the irrigation flow, and Q is the water-fertilizer ratio.

[0099] S702, when it is detected that the fertilizer flow rate is greater than the target flow rate, and the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the second threshold, the frequency of the pump 1428 is reduced so that the absolute value of the difference between the fertilizer flow rate and the target flow rate is less than the first threshold.

[0100] In the embodiment of the present application, the mobile irrigation head can adjust the pump 1428. It is understandable that when the frequency of the pump 1428 is reduced, the fertilizer flow rate decreases, and when the frequency of the pump 1428 is increased, the fertilizer flow rate increases.

[0101] In the embodiment of the present application, the method of adjusting the fertilizer flow rate by adjusting the frequency of the pump 1428 is called fine-tuning.

[0102] When executing step S702, the mobile irrigation head can determine the reduction step of the pump 1428 according to the absolute value of the difference between the fertilization flow rate and the target flow rate. The reduction step of the pump 1428 can also be called the frequency reduction step.

[0103] In some embodiments, when the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than a third threshold and less than or equal to a second threshold, the reduction step is determined to be a first reduction step, wherein the third threshold is greater than the first threshold.

[0104] For example, the second threshold is 0.1m 3 / h, the third threshold is 0.05m 3 / h as an example, when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than 0.05m 3 / h and less than or equal to 0.1m 3 / h, determine the first reduction step to be 0.3HZ.

[0105] In some embodiments, when the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than a fourth threshold and less than or equal to a third threshold, the reduction step is determined to be a second reduction step, wherein the fourth threshold is greater than the first threshold and the second reduction step is smaller than the first reduction step.

[0106] For example, the third threshold is 0.05m 3 / h, the fourth threshold is 0.02m 3 / h as an example, when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than 0.02m 3 / h and less than or equal to 0.05m 3 / h, and determine the second reduction step to be 0.15HZ.

[0107] In some embodiments, when the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the fourth threshold, the reduction step is determined to be a third reduction step, wherein the third reduction step is smaller than the second reduction step.

[0108] For example, the fourth threshold is 0.03m 3 / h, the first threshold is 0.01m 3 / h as an example, when the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than 0.01m 3 / h and less than or equal to 0.03m 3 / h, and determine the third reduction step to be 0.05HZ.

[0109] It is understandable that when the mobile irrigation head executes step S702, the step width of the reduction may be constant, or in other embodiments, when the mobile irrigation head executes step S702, the step width of the reduction may be variable.

[0110] For example, when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the third threshold value and less than or equal to the second threshold value, the mobile irrigation head can first reduce the frequency of the pump 1428 with a reduction step of 0.3HZ, and when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the fourth threshold value and less than or equal to the third threshold value, the reduction step is adjusted from 0.3HZ to 0.15HZ. Similarly, when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the fourth threshold value, the reduction step is adjusted from 0.15HZ to 0.05HZ, that is, when the mobile irrigation head executes step S702, the reduction step can be variable and gradually reduced.

[0111] For another example, when the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the fourth threshold, the reduction step is 0.05HZ, that is, when the mobile irrigation head executes step S702, the reduction step may be unchanged.

[0112] S703, when it is detected that the fertilizer flow rate is less than the target flow rate, and the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the second threshold, the opening of the fertilizer suction port valve 1427 is increased, or the opening of the fertilizer suction port valve 1427 is increased first, and after the fertilizer flow rate is greater than the target flow rate and the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the second threshold, the frequency of the pump 1428 is reduced, so that the absolute value of the difference between the fertilizer flow rate and the target flow rate is less than the first threshold.

[0113] In the embodiment of the present application, the mobile irrigation head can also adjust the fertilizer suction port valve 1427. It can be understood that when the opening of the fertilizer suction port valve 1427 is reduced, the fertilizer flow rate decreases, and when the opening of the fertilizer suction port valve 1427 is increased, the fertilizer flow rate increases.

[0114] In the embodiment of the present application, the method of adjusting the opening of the fertilizer suction port valve 1427 to adjust the fertilizer flow rate is called coarse adjustment.

[0115] It should be noted that when the mobile irrigation head starts the fertilization function, the frequency of the pump 1428 runs at full frequency. Therefore, although the fertilization flow rate is less than the target flow rate, and the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the second threshold, the frequency of the pump 1428 cannot continue to increase. Therefore, the opening of the fertilizer suction port valve 1427 can be increased, or the opening of the fertilizer suction port valve 1427 can be increased first, and after the fertilization flow rate is greater than the target flow rate and the difference between the fertilization flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the second threshold, the frequency of the pump 1428 can be reduced.

[0116] It should also be noted that in the above description, when the absolute value of the difference between the fertilization flow rate and the target flow rate is less than the second threshold, the fertilization flow rate can also be adjusted by only coarse adjustment. The reason is that through coarse adjustment, it is also possible to directly make the absolute value of the difference between the fertilization flow rate and the target flow rate less than the first threshold.

[0117] In some embodiments, when the mobile irrigation head executes step S703, the increasing step of the fertilizer intake valve 1427 may be fixed, for example, the increasing step of the fertilizer intake valve 1427 is 2%.

[0118] It can be understood that when the opening of the fertilizer intake valve 1427 is increased so that the fertilizer flow rate is greater than the target flow rate, and the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the second threshold, the frequency of the pump 1428 can be reduced according to the reduction step described above.

[0119] S704, when it is detected that the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the second threshold value, the opening of the fertilizer suction port valve 1427 is adjusted according to the difference between the fertilizer flow rate and the target flow rate, or the opening of the fertilizer suction port valve 1427 is adjusted first, and after the fertilizer flow rate is greater than the target flow rate and the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the frequency of the pump 1428 is reduced so that the absolute value of the difference between the fertilizer flow rate and the target flow rate is less than the first threshold value.

[0120] It should be noted that in the above description, when the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than the second threshold, the fertilization flow rate can also be adjusted by only coarse adjustment. The reason is that through coarse adjustment, it is also possible to directly make the absolute value of the difference between the fertilization flow rate and the target flow rate less than the first threshold.

[0121] In the embodiment of the present application, the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than the second threshold value, which includes the following two possible situations:

[0122] In one possible situation, the fertilization flow rate is greater than the target flow rate, and the difference between the fertilization flow rate and the target flow rate is greater than the second threshold, that is, the difference between the fertilization flow rate and the target flow rate is a positive value.

[0123] In one possible situation, the target flow rate is greater than the fertilization flow rate, and the difference between the target flow rate and the fertilization flow rate is greater than the second threshold, that is, the difference between the fertilization flow rate and the target flow rate is a negative value.

[0124] Therefore, for the above two possible situations, the mobile irrigation head can determine whether to reduce or increase the opening of the fertilizer intake valve 1427 according to the difference between the fertilizer flow rate and the target flow rate, and can adjust the opening of the fertilizer intake valve 1427 so that the fertilizer flow rate is greater than the target flow rate, and the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the second threshold, and then reduce the frequency of the pump 1428.

[0125] When the mobile irrigation head executes step S704, the adjustment step of the fertilizer intake valve 1427 can be determined according to the absolute value of the difference between the fertilization flow rate and the target flow rate.

[0126] In some embodiments, when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the second threshold and less than or equal to the fifth threshold, it is determined to adjust the opening of the fertilizer intake port valve 1427 with a fourth adjustment step.

[0127] For example, the second threshold is 0.1m 3 / h, the fifth threshold is 0.2m 3 / h as an example, when the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than 0.1m 3 / h and less than or equal to 0.2m 3 / h, the fourth adjustment step is determined to be 2%. It can be understood that when the fertilizer flow rate is greater than the target flow rate, the mobile irrigation head can reduce the opening of the fertilizer suction port valve 1427 by a 2% reduction step. When the fertilizer flow rate is less than the target flow rate, the mobile irrigation head can increase the opening of the fertilizer suction port valve 1427 by a 2% increase step.

[0128] In some embodiments, when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the fifth threshold and less than or equal to the sixth threshold, it is determined to adjust the opening of the fertilizer intake valve 1427 with the fifth adjustment step, wherein the absolute value of the fifth adjustment step is greater than the absolute value of the fourth adjustment step.

[0129] For example, the fifth threshold is 0.2m 3 / h, the sixth threshold is 0.4m 3 / h as an example, when the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than 0.2m 3 / h and less than or equal to 0.4m 3 / h, the fifth adjustment step is determined to be 3%.

[0130] In some embodiments, when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the sixth threshold, it is determined to adjust the opening of the fertilizer intake valve 1427 with a sixth adjustment step, wherein the sixth threshold is greater than the second threshold, and the absolute value of the sixth adjustment step is greater than the absolute value of the fifth adjustment step.

[0131] For example, the sixth threshold is 0.4m 3 / h as an example, when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than 0.4m 3 / h, the sixth adjustment step is determined to be 5%.

[0132] It can be understood that when the opening of the fertilizer intake valve 1427 is adjusted so that the fertilizer flow rate is greater than the target flow rate, and the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the second threshold, the frequency of the pump 1428 can be reduced according to the reduction step described above.

[0133] In the embodiment of the present application, when the mobile irrigation head turns on the fertilization function, the fertilizer intake valve 1427 can be opened at a first opening and the pump 1428 can be turned on at full frequency, and the fertilizer intake valve 1427 and the pump 1428 can be dynamically adjusted according to the absolute value of the difference between the fertilization flow rate and the target flow rate, thereby ensuring that the fertilization flow rate is always within a reasonable range to meet normal agricultural production needs.

[0134] In some embodiments, after reducing the frequency of the pump 1428, or adjusting the opening of the fertilizer inlet valve 1427, or adjusting the opening of the fertilizer inlet valve 1427 first and then reducing the frequency of the pump 1428, that is, the frequency of the pump 1428 may not be full frequency. In this case, the method 700 further includes:

[0135] When it is detected that the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the second threshold, the frequency of the pump 1428 is adjusted according to the difference between the fertilization flow rate and the target flow rate.

[0136] Specifically, the process of the mobile irrigation head executing step S701 to step S704 can be understood as the first adjustment when the fertilization function is turned on. In addition, the mobile irrigation head can also detect the fertilization flow rate during the fertilization process. Since the frequency of the pump 1428 at this time is not full frequency, the mobile irrigation head can reduce or increase the frequency of the pump 1428.

[0137] The mobile irrigation head can determine the adjustment step of the pump 1428 according to the difference between the fertilization flow rate and the target flow rate.

[0138] In some embodiments, when the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than a third threshold and less than or equal to a second threshold, the adjustment step is determined to be a first adjustment step, wherein the third threshold is greater than the first threshold.

[0139] For example, the second threshold is 0.1m 3 / h, the third threshold is 0.05m 3 / h as an example, when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than 0.05m 3 / h and less than or equal to 0.1m 3 / h, the first adjustment step is determined to be 0.3HZ. It can be understood that when the fertilizer flow rate is greater than the target flow rate, the mobile irrigation head can reduce the frequency of the pump 1428 by a reduction step of 0.3HZ. When the fertilizer flow rate is less than the target flow rate, the mobile irrigation head can increase the frequency of the pump 1428 by an increase step of 0.3HZ.

[0140] In some embodiments, when the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than a fourth threshold and less than or equal to a third threshold, the adjustment step is determined to be a second adjustment step, wherein the fourth threshold is greater than the first threshold, and the absolute value of the second adjustment step is less than the absolute value of the first adjustment step.

[0141] For example, the third threshold is 0.05m 3 / h, the fourth threshold is 0.02m 3 / h as an example, when the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than 0.02m 3 / h and less than or equal to 0.05m 3 / h, and determine the second adjustment step to be 0.15HZ.

[0142] In some embodiments, when the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than or equal to the first threshold and less than or equal to the fourth threshold, the adjustment step is determined to be the third adjustment step, wherein the absolute value of the third adjustment step is less than the absolute value of the second reduction step.

[0143] For example, the fourth threshold is 0.03m 3 / h, the first threshold is 0.01m 3 / h as an example, when the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than 0.01m 3 / h and less than or equal to 0.03m 3 / h, and determine the third adjustment step to be 0.05HZ.

[0144] In some embodiments, after reducing the frequency of the pump 1428, or adjusting the opening of the fertilizer inlet valve 1427, or adjusting the opening of the fertilizer inlet valve 1427 first and then reducing the frequency of the pump 1428, that is, the frequency of the pump 1428 may not be full frequency. In this case, the method 700 further includes:

[0145] When it is detected that the absolute value of the difference between the fertilizer flow and the target flow is greater than the second threshold, the opening of the fertilizer suction port valve 1427 is adjusted according to the difference between the fertilizer flow and the target flow, or the opening of the fertilizer suction port valve 1427 is adjusted first, and after the absolute value of the difference between the fertilizer flow and the target flow is greater than or equal to the first threshold and less than or equal to the second threshold, the frequency of the pump 1428 is adjusted according to the difference between the fertilizer flow and the target flow, so that the absolute value of the difference between the fertilizer flow and the target flow is less than the first threshold.

[0146] It should be understood that when the absolute value of the difference between the fertilizer flow rate and the target flow rate is detected to be greater than the second threshold, the description of adjusting the opening of the fertilizer intake valve 1427 according to the difference between the fertilizer flow rate and the target flow rate can be found above and will not be repeated here for the sake of brevity.

[0147] It should also be understood that when the absolute value of the difference between the fertilizer flow and the target flow is greater than the second threshold, the mobile irrigation head first adjusts the opening of the fertilizer suction port valve 1427, and after the absolute value of the difference between the fertilizer flow and the target flow is greater than or equal to the first threshold and less than or equal to the second threshold, the frequency of the pump 1428 is adjusted according to the difference between the fertilizer flow and the target flow. There are two adjustment methods. For the specific description of the two methods, please refer to the above. For the sake of brevity, they will not be repeated here.

[0148] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described device can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0149] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative.

[0150] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0151] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for regulating fertilization flow, characterized in that: The method is applied to a mobile irrigation head, and the method comprises: In response to a first instruction, the pump (1428) and the fertilizer suction port valve (1427) are turned on in a first working condition, wherein the first instruction is used to instruct the start of fertilization, the pump (1428) is used to suck fertilizer, the fertilizer suction port valve (1427) is a ball valve, the frequency of the pump (1428) corresponding to the first working condition is full frequency, the opening of the fertilizer suction port valve (1427) is a first opening, and the first opening is greater than or equal to the minimum opening of the fertilizer suction port valve (1427); When it is detected that the fertilizer flow rate is greater than the target flow rate, and the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than or equal to a first threshold value and less than or equal to a second threshold value, the frequency of the pump (1428) is reduced so that the absolute value of the difference between the fertilizer flow rate and the target flow rate is less than the first threshold value; or When it is detected that the fertilizer flow rate is less than the target flow rate, and the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the opening of the fertilizer suction port valve (1427) is increased, or the opening of the fertilizer suction port valve (1427) is first increased, and when the fertilizer flow rate is greater than the target flow rate and the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is reduced so that the absolute value of the difference between the fertilizer flow rate and the target flow rate is less than the first threshold value; or When it is detected that the absolute value of the difference between the fertilizer flow rate and the target flow rate is greater than the second threshold value, the opening of the fertilizer intake valve (1427) is adjusted according to the difference between the fertilizer flow rate and the target flow rate, or the opening of the fertilizer intake valve (1427) is adjusted first, and when the fertilizer flow rate is greater than the target flow rate and the difference between the fertilizer flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is reduced so that the absolute value of the difference between the fertilizer flow rate and the target flow rate is less than the first threshold value.

2. The method according to claim 1, characterized in that After reducing the frequency of the pump (1428), or adjusting the opening of the fertilizer suction port valve (1427), or first adjusting the opening of the fertilizer suction port valve (1427) and then reducing the frequency of the pump (1428), the method further comprises: When it is detected that the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is adjusted according to the difference between the fertilization flow rate and the target flow rate so that the absolute value of the difference between the fertilization flow rate and the target flow rate is less than the first threshold value; or When it is detected that the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than the second threshold value, the opening of the fertilizer suction port valve (1427) is adjusted according to the difference between the fertilization flow rate and the target flow rate, or the opening of the fertilizer suction port valve (1427) is adjusted first, and after the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is adjusted according to the difference between the fertilization flow rate and the target flow rate, so that the absolute value of the difference between the fertilization flow rate and the target flow rate is less than the first threshold value.

3. The method according to claim 2, characterized in that When the absolute value of the difference between the fertilization flow rate and the target flow rate is detected to be greater than or equal to the first threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is adjusted according to the difference between the fertilization flow rate and the target flow rate, including: When the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than a third threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is adjusted with a first adjustment step according to the difference between the fertilization flow rate and the target flow rate, wherein the third threshold value is greater than the first threshold value; or When the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than a fourth threshold value and less than or equal to the third threshold value, the frequency of the pump (1428) is adjusted with a second adjustment step according to the difference between the fertilization flow rate and the target flow rate, wherein the fourth threshold value is greater than the first threshold value, and the absolute value of the second adjustment step value is less than the absolute value of the first adjustment step value; or When the absolute value of the difference between the fertilization flow and the target flow is greater than or equal to the first threshold and less than or equal to the fourth threshold, the frequency of the pump (1428) is adjusted with a third adjustment step according to the difference between the fertilization flow and the target flow, wherein the absolute value of the third adjustment step is smaller than the absolute value of the second adjustment step.

4. The method according to claim 2, characterized in that: When the absolute value of the difference between the fertilization flow rate and the target flow rate is detected to be greater than the second threshold, adjusting the opening of the fertilizer intake valve (1427) according to the difference between the fertilization flow rate and the target flow rate comprises: When the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than the second threshold value and less than or equal to the fifth threshold value, adjusting the opening of the fertilizer intake valve (1427) with a fourth adjustment step according to the difference between the fertilization flow rate and the target flow rate; or When the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than the fifth threshold value and less than or equal to the sixth threshold value, the opening of the fertilizer intake valve (1427) is adjusted with a fifth adjustment step according to the difference between the fertilization flow rate and the target flow rate, wherein the absolute value of the fifth adjustment step is greater than the absolute value of the fourth adjustment step; or When the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than the sixth threshold value, the opening of the fertilizer intake valve (1427) is adjusted with a sixth adjustment step according to the difference between the fertilization flow rate and the target flow rate, wherein the sixth threshold value is greater than the second threshold value, and the absolute value of the sixth adjustment step is greater than the absolute value of the fifth adjustment step.

5. The method according to claim 2, characterized in that: When it is detected that the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than the second threshold value, the opening of the fertilizer suction port valve (1427) is first adjusted according to the difference between the fertilization flow rate and the target flow rate, and after the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is adjusted according to the difference between the fertilization flow rate and the target flow rate, including: When the absolute value of the difference between the fertilizing flow rate and the target flow rate is greater than the second threshold value and less than or equal to the fifth threshold value, the opening of the fertilizer intake valve (1427) is adjusted with a fourth adjustment step according to the difference between the fertilizing flow rate and the target flow rate, and after the absolute value of the difference between the fertilizing flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is adjusted according to the difference between the fertilizing flow rate and the target flow rate; or When the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than the fifth threshold value and less than or equal to the sixth threshold value, the opening of the fertilizer intake valve (1427) is adjusted with a fifth adjustment step according to the difference between the fertilization flow rate and the target flow rate, and after the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is adjusted again according to the difference between the fertilization flow rate and the target flow rate, wherein the absolute value of the fifth adjustment step is greater than the absolute value of the fourth adjustment step; or When the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than the sixth threshold value, the opening of the fertilizer intake valve (1427) is adjusted with a sixth adjustment step according to the difference between the fertilization flow rate and the target flow rate, and after the absolute value of the difference between the fertilization flow rate and the target flow rate is greater than or equal to the first threshold value and less than or equal to the second threshold value, the frequency of the pump (1428) is adjusted again according to the difference between the fertilization flow rate and the target flow rate, wherein the sixth threshold value is greater than the second threshold value, and the absolute value of the sixth adjustment step is greater than the absolute value of the fifth adjustment step.

6. The method according to any one of claims 1 to 5, characterized in that The first opening degree is determined according to the target flow rate.

7. The method according to any one of claims 1 to 5, characterized in that The target flow rate is determined based on the water-fertilizer ratio and the irrigation flow rate.

8. The method according to any one of claims 1 to 5, characterized in that The target flow rate is preset.

9. A mobile irrigation head, characterized in that: The mobile irrigation head comprises a mobile bin (110), an irrigation pipe system (120), a fertilizer system (130), and a fertilizer irrigation control system (140). The irrigation pipe system (120), the fertilizer system (130), and the fertilizer irrigation control system (140) are accommodated in the mobile bin (110). The fertilizer irrigation control system (140) comprises a control module (141) and a pipe assembly (142). The pipe assembly (142) is connected to the irrigation pipe system (120) and the fertilizer system (130) to mix water and fertilizer. The pipe assembly (142) comprises a fertilizer suction port valve (1427) and a pump (1428). The fertilizer suction port valve (1427) and the pump (1428) are used to control the flow of fertilizer. The pipe assembly (142) is provided with a flow detector (1433). The control module (141) is used to execute the method according to any one of claims 1 to 8.

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