CN110946062A - Irrigation method and irrigation system - Google Patents
Irrigation method and irrigation system Download PDFInfo
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- CN110946062A CN110946062A CN201911387672.1A CN201911387672A CN110946062A CN 110946062 A CN110946062 A CN 110946062A CN 201911387672 A CN201911387672 A CN 201911387672A CN 110946062 A CN110946062 A CN 110946062A
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- 238000003973 irrigation Methods 0.000 title claims abstract description 80
- 230000002262 irrigation Effects 0.000 title claims abstract description 80
- 238000000034 method Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000009826 distribution Methods 0.000 claims description 12
- 239000007921 spray Substances 0.000 claims description 3
- 230000001186 cumulative effect Effects 0.000 claims description 2
- 239000003621 irrigation water Substances 0.000 abstract description 5
- 101100520231 Caenorhabditis elegans plc-3 gene Proteins 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
- A01G25/167—Control by humidity of the soil itself or of devices simulating soil or of the atmosphere; Soil humidity sensors
Abstract
The invention relates to an irrigation method and an irrigation system, wherein the system comprises a main pipe (1); the branch pipe (2) is communicated with the main pipe (1); further comprising: a PLC controller (3); the flow control pipeline (4) is arranged on the main pipe (1) and located at the upstream of the branch pipe (2), comprises at least two parallel branch pipelines (41), and each branch pipeline (41) comprises: the centrifugal pump (41a) is controlled to be opened or closed by the PLC (3); the frequency converter (41b) is controlled by the PLC (3) to adjust the rotating speed of the centrifugal pump (41 a); and the first flow meter (41c) is used for measuring the real-time flow of the branch pipeline (41) and feeding back the real-time flow to the PLC (3). The irrigation system can allocate the irrigation water quantity according to the needs of farmers, so that the water requirements of different crops can be met.
Description
Technical Field
The invention relates to the field of irrigation, in particular to an irrigation method and an irrigation system for implementing the irrigation method.
Background
Patent CN105580717B discloses a sprinkling irrigation and drip irrigation system, and the irrigation system in this patent lines up the irrigation district according to the humidity of the different irrigation district soil that obtains of measurement to irrigate the district in proper order from little to big according to soil humidity. And the water demand of crops is different, the soil humidity of the region where the crops with smaller water demand are located is also smaller, and if the system according to the patent sets the region where the crops with lower water demand are located as the front row of the queue, water is preferentially distributed. However, the crop in the area is not starved of water and is damaged if it is irrigated prematurely. Therefore, whether the crops really need water or not can be known only by the farmers who plant the crops, but the water is not irrigated according to the needs of the farmers, and the crops are irrigated sequentially only through the measured soil humidity, so that whether the crops lack water or not can not be accurately judged. Therefore, the irrigation system cannot meet the real-time requirements of users, and further cannot irrigate according to the water requirements of different crops.
Disclosure of Invention
The invention aims to provide an irrigation method capable of irrigating different crops according to real-time water demands of users and an irrigation system for implementing the irrigation method.
In order to achieve the above object, the present invention provides an irrigation method and an irrigation system, the method comprising the steps of:
a. collecting water demand reported by users and forming an irrigation queue according to the reporting sequence;
b. judging whether the total flow of the irrigation area meets the requirements of all users in the current queue or not;
c. and (c) according to the judgment result of the step (b), distributing water to all users in the current queue or distributing water to the users only according to the queue sequence.
According to one aspect of the invention, in the step (a), the user reports the water demand through a networked client to form an online irrigation queue.
According to one aspect of the invention, the water distribution in step (c) is performed simultaneously or sequentially according to a queue order.
According to an aspect of the present invention, if the determination result of the step (b) is not satisfied, the water amount is adjusted according to the water demand of each user in the step (c).
According to one aspect of the present invention, if the determination result of step (b) is satisfied, in step (c), the water pump is started according to the amount of water to be distributed, and the rotation speed of the water pump is controlled by the frequency converter;
and then establishing real-time water distribution scheduling by utilizing the PLC.
According to one aspect of the invention, the PLC optimizes the water allocation for each user according to the queue order.
According to one aspect of the invention, the amount of water distributed to each user is determined according to the optimized water distribution amount, and the valves on the branches where the corresponding users are located are controlled to be opened simultaneously or sequentially according to the queue order.
According to one aspect of the invention, during the irrigation process, the flow meter on each branch measures the real-time flow of the branch, and when the cumulative flow of the branch calculated by the PLC according to the irrigation time and the real-time flow reaches the water demand of the user or the user actively puts forward and stops water, the valve on the branch is closed.
The irrigation system comprises:
a main pipe;
a branch pipe communicated with the main pipe;
further comprising:
a PLC controller;
the flow control pipeline is arranged on the main pipe and positioned at the upstream of the branch pipe, comprises at least two parallel branch pipelines, and each branch pipeline comprises:
the centrifugal pump is controlled to be opened or closed by the PLC;
the frequency converter is controlled by the PLC to adjust the rotating speed of the centrifugal pump;
and the first flow meter is used for measuring the real-time flow of the branch pipeline and feeding back the real-time flow to the PLC.
According to one aspect of the invention, the main pipe is further provided with:
the first ball valve is positioned at the upstream of the flow control pipeline and is controlled to be opened or closed by the PLC;
and the check valve is positioned between the flow control pipeline and the branch pipe.
According to one aspect of the invention, the branch pipe is provided with:
the second ball valve is controlled to be opened or closed by the PLC controller;
and the second flow meter is used for measuring the real-time flow of the branch pipe and feeding back the real-time flow to the PLC.
According to one aspect of the invention, the branch pipe is further provided with a water outlet, and the water outlet is connected with a spray head or a water dropper.
According to one scheme of the invention, an online queuing mechanism is formed by collecting water demand reported by a user. And then the PLC controls the opening sequence of the ball valves on each branch pipe according to the queue sequence, and the PLC closes the corresponding ball valves when the accumulated flow obtained by calculating the irrigation time and the real-time flow measured by the second flow meters on the branch pipes reaches the water demand of the user or the user actively proposes water cut-off, so that the irrigation is carried out according to the user demand more accurately, and the water consumption demands of different crops are met. The problem that the water demand is different when the current crops are not uniform and the user demands are inconsistent is effectively solved, and the user demands are met to the maximum extent.
According to one scheme of the invention, when the total flow of the irrigation area can meet the requirements of all users in the queue, all centrifugal pumps do not need to be started, so that the PLC is used for controlling the starting number of the centrifugal pumps according to the required irrigation water quantity, and controlling the frequency converter to adjust the rotating speed of the centrifugal pumps according to different flow requirements.
According to one scheme of the invention, the parallel connection of the centrifugal pumps enables a standby device to be formed among the centrifugal pumps, and the influence on user requirements when a fault occurs is avoided.
According to one scheme of the invention, the branch pipes are arranged at the downstream of the main pipe and are arranged according to the landform and the landform of the land parcel, so that uniform distribution of irrigation water is realized to the maximum extent.
Drawings
FIG. 1 is a schematic diagram schematically illustrating an irrigation system according to an embodiment of the present invention;
fig. 2 is a control flow diagram schematically illustrating an irrigation system according to an embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is based on the orientation or positional relationship shown in the associated drawings, which is for convenience and simplicity of description only, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above-described terms should not be construed as limiting the present invention.
The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.
FIG. 1 is a schematic diagram schematically illustrating an irrigation system according to an embodiment of the present invention; fig. 2 is a control flow diagram schematically illustrating an irrigation system according to an embodiment of the present invention. The irrigation system or the irrigation method in the prior art can not irrigate according to the actual needs of crops, and whether the crops really need water can be obtained according to the experience of farmers. Therefore, referring to fig. 1 and 2, in order to meet the water demand of different crops, the present invention irrigates according to the demand reported by the farmers who plant different crops (hereinafter referred to as users). Firstly, a user reports the water demand by using a networked client, and queues are carried out according to the reporting sequence of the user, so as to form an online queue.
And then judging whether the total flow of the irrigation area meets the requirements of all users in the current queue. In the invention, the total flow of the irrigation area is the water yield of the water source W. In the embodiment shown in fig. 2, if the total flow of the irrigation area is greater than the sum of the total flows of all the user demands in the queue, it represents that the demand is satisfied (the judgment result in the flowchart is "Y"), otherwise, it is not satisfied (the judgment result in the flowchart is "N"). Generally, the total output flow of all centrifugal pumps under full load operation is greater than the output flow of the water source (i.e. the total flow of the irrigation area). If the total flow of the irrigation area obtained by comparison meets the requirements of all users in the queue, at this time, the total flow of the user requirements can be met without opening all the centrifugal pumps 41a because the water yield of the water source W is greater than the sum of the total flow of the requirements of all the users. The number of centrifugal pumps 41a in the flow control line 4 that are activated can be determined according to the total amount of water to be irrigated. And the rotational speed of the centrifugal pump 41a is controlled by the frequency converter 41b to control the flow rate. And then establishing real-time water distribution scheduling by utilizing the PLC. If the total flow of the irrigation area obtained by comparison does not meet the requirements of all users in the queue, all users in the queue cannot be irrigated at the same time, and water amount allocation can be carried out only according to the queue sequence and the water demand of the users. This condition would turn on all centrifugal pumps 41 a.
And whether the total flow of the irrigation area meets the requirements of all users in the queue or not, the PLC optimizes the water distribution amount of each user according to the queue sequence to obtain the optimal solution of the water distribution amount. And finally, allocating the water amount distributed to each user according to the optimal water allocation solution calculated by the PLC. When water is distributed, the PLC controller 3 can simultaneously open the second ball valves 21 on the plurality of branch pipes 2, and when the PLC calculates the accumulated flow of the branch pipes 2 according to the irrigation time and the real-time flow measured by the second flow meter 22 and reaches the water demand of a user on the branch pipe, the PLC controller 3 controls the corresponding second ball valves 21 to be closed. Or, the next irrigation area can be irrigated again after the irrigation area is irrigated, that is, the second ball valve 21 on the branch where the user closest to the front of the queue is located is opened according to the sequence of the queue, and after the irrigation area is irrigated, the second ball valve 21 on the branch 2 is closed and then the second ball valve 21 on the next branch 2 is opened.
The following illustrates the deployment when the total flow to the irrigation area cannot meet the demand of all the users in the queue. Suppose that users of irrigation areas A, B and C report water demand alphabetically. Assuming that the total flow of the irrigation area can only meet the requirements of two users in the irrigation areas A and B, the PLC 3 has two water distribution modes at the moment, and the first method is sequential irrigation, namely, the second ball valve 21 on the branch pipe 2 of the area A is opened firstly. In the irrigation process, the second flowmeter 22 measures the real-time flow of the branch pipe 2 in the area A, the PLC can calculate the accumulated flow of the branch pipe in the area A according to the irrigation time and the real-time flow, and when the accumulated flow reaches the water demand of the user A, the PLC closes the ball valve and distributes water to the irrigation area B according to the method. And after the irrigation area B finishes irrigation, water is distributed to users in the irrigation area C. The second method is to distribute water simultaneously, namely, the ball valves on the branches of the areas A and B are opened simultaneously, the water demand of the area A is smaller, therefore, the water distribution amount can meet the requirement firstly, at the moment, the PLC closes the second ball valve 21 on the branch 2 of the area A firstly, and when the water distribution amount of the area B meets, the ball valve on the branch is closed. During irrigation, a user can also actively put forward a water cut-off request, and the system can timely close the ball valves on the corresponding branches according to the water cut-off request of the user.
As shown in fig. 1, the irrigation system of the present invention comprises a main pipe 1, and the left end of the main pipe 1 is connected to a water source W. Downstream of the main pipe 1, branch pipes 2 are connected for distributing irrigation water to the field. The main pipe 1 is provided with a first ball valve 5, a flow control pipeline 4 and a check valve 6 for preventing the pipeline water from flowing backwards to pollute the water source W in sequence from the upstream to the downstream. In the present embodiment, the flow rate control line is composed of three branched lines 41 connected in parallel. Of course, the scheme of connecting more than two branch pipelines 41 in parallel can be adopted, and the form of connecting a plurality of pipelines in parallel enables the branch pipelines 41 to be mutually standby, so that the influence on the user requirements when a fault occurs is avoided. Wherein, each branch pipeline 41 is provided with a centrifugal pump 41a, a frequency converter 41b and a first flowmeter 41c in sequence from the upstream to the downstream, and the three components are directly connected with the PLC controller 3 in a wired manner. The centrifugal pump 41a is controlled by the PLC 3 to be opened or closed, the frequency converter 41b is controlled by the PLC 3 to adjust the rotating speed of the centrifugal pump 41a, and the first flow meter 41c meters the real-time flow of each branch pipeline 41 and feeds the real-time flow back to the PLC 3. The first ball valve 5 is wirelessly connected with the PLC 3 and is controlled to open or close by the PLC.
In the invention, a second ball valve 21 and a second flow meter 22 are arranged at the position of the branch pipe 2 close to the main pipe 1, and the two components are wirelessly connected with the PLC 3. The second ball valve 21 is controlled by the PLC controller 3 to open or close, and the second flow meter 22 can be used to measure the real-time flow of the branch pipe 2 and feed back to the PLC controller 3. The a-F shown in fig. 1 represent different irrigation, and the branch pipes 2 should be arranged according to the topography of different plots so as to maximize the uniform distribution of irrigation water. And the water outlet 23 on the branch pipe 2 can be connected with a spray head or a water dropper according to the irrigation mode.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and it is apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A method of irrigation comprising the steps of:
a. collecting water demand reported by users and forming an irrigation queue according to the reporting sequence;
b. judging whether the total flow of the irrigation area meets the requirements of all users in the current queue or not;
c. and (c) according to the judgment result of the step (b), distributing water to all users in the current queue or distributing water to the users only according to the queue sequence.
2. The irrigation method as recited in claim 1, wherein in step (a), the user reports the water demand through a networked client to form an online irrigation queue.
3. The irrigation method as recited in claim 2, wherein the step (c) is performed by dispensing water simultaneously or sequentially in a queue order.
4. The irrigation method as recited in claim 3, wherein if the determination of step (b) is not satisfied, water is allocated in step (c) according to the water demand of each user.
5. The irrigation method as claimed in claim 3, wherein if the determination result of step (b) is satisfied, in step (c), the water pump is turned on according to the amount of water to be distributed, and the rotation speed of the water pump is controlled by a frequency converter;
and then establishing real-time water distribution scheduling by utilizing the PLC.
6. The irrigation method as recited in claim 4 or claim 5, wherein the PLC optimizes the water distribution for each user based on the queue order.
7. The irrigation method as claimed in claim 6, wherein the amount of water distributed to each user is determined based on the optimized water distribution, and the valves on the branches of the corresponding users are controlled to be opened simultaneously or sequentially in the order of the queue.
8. The irrigation method according to claim 7, wherein during the irrigation process, the flow meter on each branch measures the real-time flow rate of the branch, and when the cumulative flow rate of the branch calculated by the PLC according to the irrigation time and the real-time flow rate reaches the water demand of the user or the user actively proposes to stop the water supply, the valve on the branch is closed.
9. An irrigation system for carrying out the method of any one of claims 1-8, comprising:
a main tube (1);
the branch pipe (2) is communicated with the main pipe (1);
it is characterized by also comprising:
a PLC controller (3);
the flow control pipeline (4) is arranged on the main pipe (1) and located at the upstream of the branch pipe (2), comprises at least two parallel branch pipelines (41), and each branch pipeline (41) comprises:
the centrifugal pump (41a) is controlled to be opened or closed by the PLC (3);
the frequency converter (41b) is controlled by the PLC (3) to adjust the rotating speed of the centrifugal pump (41 a);
and the first flow meter (41c) is used for measuring the real-time flow of the branch pipeline (41) and feeding back the real-time flow to the PLC (3).
10. The irrigation system as claimed in claim 9, wherein the main pipe (1) is further provided with:
the first ball valve (5) is positioned at the upstream of the flow control pipeline (4) and is controlled to be opened or closed by the PLC (3);
and the check valve (6) is positioned between the flow control pipeline (4) and the branch pipe (2).
11. An irrigation system according to claim 10, wherein the branch pipes (2) are provided with:
the second ball valve (21) is controlled to be opened or closed by the PLC (3);
and the second flow meter (22) is used for measuring the real-time flow of the branch pipe (2) and feeding back the real-time flow to the PLC (3).
12. An irrigation system according to any of claims 9-11, characterized in that the branch pipe (2) is further provided with a water outlet (23), and a spray head or a water dropper is connected to the water outlet (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387672.1A CN110946062A (en) | 2019-12-27 | 2019-12-27 | Irrigation method and irrigation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911387672.1A CN110946062A (en) | 2019-12-27 | 2019-12-27 | Irrigation method and irrigation system |
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| CN110946062A true CN110946062A (en) | 2020-04-03 |
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