Control method and system of intelligent irrigation

A technology of intelligent irrigation and control methods, applied in the fields of botanical equipment and methods, measurement devices, climate change adaptation, etc., can solve the problems of inaccurate irrigation, time-consuming and laborious, plant and soil loss, etc., to improve irrigation accuracy and resources. Effectiveness of utilization rate and labor cost reduction

Inactive Publication Date: 2019-04-09
天津市科睿思奇智控技术有限公司
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AI-Extracted Technical Summary

Problems solved by technology

In the cultivation of agricultural crops, it is necessary to irrigate the crops to promote the growth of the crops and replenish the water needed for the growth of the crops. The traditional irrigation methods are mostly based on the experience of the farmers in the field, or even flood irrigation, which is time-consuming and laborious. The pertinence is poo...
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Method used

According to above-mentioned embodiment, preferably, described weather station is integrated type weather station, and described integrated type weather station comprises solar irradiance meter, anemometer and temperature and humidity detector, can measure atmospheric temperature, humidity, wind speed simultaneously , wind direction, air pressure, solar radiation and other main meteorological elements, small size, low space occupancy rate, the installation can be completed by installing the fixed components once, and the work efficiency is improved.
According to the environmental parameter of real-time transmission and the local environmental parameter value data that can be consulted, calculate crop water demand by Penman-Monteith formula, Penman-Monteith (Penman-Monteith) formula is proposed by the Food and Agriculture Organization of the United Nations The latest modified Penman formula has been widely used and has been proved to have high accuracy and usability.
As shown in the figure, the present invention discloses a kind of control method of intelligent irrigation, it is characterized in that, comprises the following steps: a. weather station maintains the communication connection with cloud server, gathers the environmental parameter of irrigation area by weather station, The environmental parameters are transmitted to the cloud server; b. The cloud server calculates the water demand of the crops according to the environmental parameters, and determines the walking speed of the sprinkler irrigation machine according to the water demand of the crops; c. The centralized control station maintains the communication connection with the cloud server, and the cloud server sends the sprinkler irrigation machine The walking speed command is sent to the centralized control station; d. The centralized control station receives the walking speed command of the sprinkler, turns on the sprinkler, and at the same time sends the command to start the water pump to the pump station; e. The pump station receives the command to turn on the water pump, starts the water pump, and opens the hydraulic control valve . The invention collects the environmental parameters in the irrigation area in real time through the weather station, and calculates the water demand of the cr...
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Abstract

The invention relates to a control method and system of intelligent irrigation. The method comprises the steps as follows: environmental parameters of an irrigation area are collected by a meteorological station and transmitted to a cloud server; the cloud server calculates water requirement of crops according to the environmental parameters and determines the walking speed of a sprinkling machineaccording to the water requirement of crops; the cloud server sends a walking speed instruction of the sprinkling machine to a centralized control station; the centralized control station receives the walking speed instruction of the sprinkling machine, starts the sprinkling machine and sends a water pump start instruction to a pump station; the pump station receives the water pump start instruction, starts a water pump and opens a hydraulic control valve, so that precise irrigation with self-adaptive capacity for weather and terrain is realized, agricultural condition acquisition and intelligent irrigation are combined scientifically and effectively, different irrigation schemes are formulated according to different irrigation requirements of crops and different geographical environments, the irrigation precision and resource utilization rate are increased, the labor cost is reduced, and the method can save 15% of water or above as compared with traditional irrigation manners.

Application Domain

Climate change adaptationWatering devices +2

Technology Topic

TerrainSelf adaptive +9

Image

  • Control method and system of intelligent irrigation
  • Control method and system of intelligent irrigation
  • Control method and system of intelligent irrigation

Examples

  • Experimental program(1)

Example Embodiment

[0014] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and the best embodiments.
[0015] As shown in the figure, the present invention discloses a control method for intelligent irrigation, which is characterized by including the following steps: a. The weather station maintains a communication connection with the cloud server, collects environmental parameters of the irrigation area through the weather station, and converts the environmental parameters Transmit to the cloud server; b. The cloud server calculates the water demand of the crop according to the environmental parameters, and determines the walking speed of the sprinkler according to the water demand of the crop; c. The centralized control station maintains the communication connection with the cloud server, and the cloud server instructs the walking speed of the sprinkler Send to the centralized control station; d. The centralized control station receives the sprinkler irrigation machine walking speed command, turns on the sprinkler irrigation machine, and sends the start pump command to the pump station at the same time; e. The pump station receives the start pump command, starts the water pump, and opens the hydraulic control valve. The invention collects the environmental parameters in the irrigation area in real time through the weather station, and calculates the crop water requirement through the Penman-Montis formula, thereby realizing precise irrigation with adaptive capabilities for climate and terrain, and scientifically and effectively collecting agricultural conditions Combined with intelligent irrigation, different irrigation schemes are formulated according to the different irrigation needs of crops and different geographical environments, which improves irrigation accuracy and resource utilization, reduces labor costs, and can save more than 15% of water compared with traditional irrigation methods.
[0016] According to the above-mentioned embodiment, preferably, the sprinkler is a central pivot sprinkler. The pivot sprinkler is also called a pointer sprinkler, which fixes the rotating pivot of the sprinkler at the center of the irrigation area. On the reinforced concrete support, the lower end of the center of the support shaft seat is connected with the well pump outlet pipe or pressure pipe, and the upper end is connected with the rotating elbow through a rotating mechanism (snubber ring), and a spray system on the truss sprays water to the crop. Irrigation machinery for increasing water production.
[0017] According to the above embodiment, preferably, the weather station is an integrated weather station, the integrated weather station includes a solar irradiator, an anemometer, and a temperature and humidity detector, which can simultaneously measure atmospheric temperature, humidity, wind speed, wind direction, The main meteorological elements such as air pressure and solar radiation are small in size and low in space occupancy. The installation can be completed by fixing the components once, which improves work efficiency.
[0018] According to real-time transmission of environmental parameters and available local environmental parameter values, the crop water requirement is calculated through the Penman-Monteith formula. The Penman-Monteith formula is the latest amendment proposed by the UN Food and Agriculture Organization Penman's formula has been widely used and has been proven to have high accuracy and usability.
[0019] Penman-Monteith formula:
[0020]
[0021] Where, ET 0 ——Reference crop evapotranspiration, mm/d; Δ——The tangent slope of the temperature-saturated water vapor pressure relationship curve at T, kPa·℃ -1; R n ——Net radiation, MJ/(m 2 · D).
[0022]
[0023] In the formula, T——average temperature, ℃; e a ——Saturated vapor pressure, kpa.
[0024]
[0025] R n =R ns -R nl
[0026] Where R ns ——Net shortwave radiation, MJ/(m 2 ·D); R nl ——Net long wave radiation, MJ/(m 2 · D).
[0027] R ns =0.77(0.25+0.5n/N)R a
[0028] In the formula, n——the actual sunshine hours, h; N——the maximum possible sunshine hours, h; R a ——Solar radiation at the edge of the atmosphere, MJ/(m 2 · D).
[0029] N=7.64Ws
[0030] Where W s ——The number of hours of sunshine, rad.
[0031] W s =arccos(-tanψ·tanδ)
[0032] In the formula, ψ-geographic latitude, rad; δ-solar inclination, rad.
[0033] δ=0.409·sin(0.0172J-1.39)
[0034] In the formula, J——day ordinal number (1st day of January and month, cumulative day by day).
[0035] R a = 37.6·d r (W s ·Sinψ·sinδ+cosψ·cosδ·sinW s )
[0036] Where R a ——Solar radiation at the edge of the atmosphere, MJ/(m 2 ·D); d r ——The relative distance between the sun and the earth.
[0037]
[0038]
[0039] Where e d ——The actual vapor pressure, kpa.
[0040]
[0041] In the formula, RH max ——Maximum daily relative humidity, %; T min ——The lowest daily temperature, ℃; e a (T min )——T min Hourly saturated vapor pressure, kpa; e d (T min )——T min Actual water vapor pressure, kpa; RH min ——Minimum daily relative humidity, %; T max ——Maximum daily temperature, ℃; e a (T max )——T max Hourly saturated vapor pressure, kpa; e d (T max )——T max When the actual water vapor pressure, kpa.
[0042] ET c =K c ET 0
[0043] Where K c ——Crop factor; ET 0 ——Reference crop evapotranspiration; ET c -Water requirement of crops.
[0044] At the same time, the present invention also discloses an intelligent irrigation control system, which is characterized by comprising a cloud server, a weather station connected to the cloud server, a centralized control station connected to the cloud server, a sprinkler irrigation machine electrically connected to the centralized control station, and A pumping station located outside the irrigation area. The centralized control station transmits instructions to the pumping station via LoRa. The pumping station provides water for the sprinkler through a pipeline. The pipeline is equipped with a hydraulic control valve connected to the pumping station. The cloud server sends opening and closing instructions to the centralized control station, and the centralized control station sends signals to the pumping station outside the irrigation area. The pumping station receives the instruction to open the corresponding hydraulic control valve to supply water to the central pivot sprinkler irrigation machine. The pumping station is set outside the irrigation area. To increase the land use area of ​​the irrigation area, the pump station controls multiple hydraulic control valves, which can supply water to multiple irrigation areas at the same time, avoiding the need to build well pumps in each irrigation area, reducing labor intensity and reducing costs.
[0045] According to the above embodiment, preferably, the cloud server and the weather station are connected via 4G.
[0046] According to the above embodiment, preferably, the cloud server and the centralized control station are connected via 4G.
[0047] The invention collects the environmental parameters in the irrigation area in real time through the weather station, and calculates the crop water requirement through the Penman-Montis formula, thereby realizing precise irrigation with adaptive capabilities for climate and terrain, and scientifically and effectively collecting agricultural conditions Combined with intelligent irrigation, different irrigation schemes are formulated according to the different irrigation needs of crops and different geographical environments, which improves irrigation accuracy and resource utilization, reduces labor costs, and can save more than 15% of water compared with traditional irrigation methods.
[0048] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also It should be regarded as the protection scope of the present invention.

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