CN110506616A - A kind of underground drip irrigation feedback control system - Google Patents
A kind of underground drip irrigation feedback control system Download PDFInfo
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- CN110506616A CN110506616A CN201910813172.3A CN201910813172A CN110506616A CN 110506616 A CN110506616 A CN 110506616A CN 201910813172 A CN201910813172 A CN 201910813172A CN 110506616 A CN110506616 A CN 110506616A
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- module
- irrigation
- drip irrigation
- terminal
- underground drip
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- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Environmental Sciences (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a kind of underground drip irrigation feedback control systems, belong to underground drip irrigation field, including host computer and terminal, terminal includes sensing module, signal processing module, execution module, control module, power module, by multi-layer Soil humidity detection, establishes and irrigate triggering and computation model, irrigation quantity is determined according to agrotype and soil moisture content situation, and irrigation is automatically controlled, it can be used for irrigated area or the monitoring of farmland underground trickle irrigation soil moisture and automatic irrigation control management.Technology proposed by the invention can carry out automatic irrigation control to underground drip irrigation irrigation effect real-time monitoring, and according to soil moisture, easy to operate, can not only improve crop irrigation effect, and can reduce agriculture water consumption, improve the utilization rate of water resource.
Description
Technical field
The present invention relates to underground drip irrigation field more particularly to a kind of underground drip irrigation feedback control systems.
Background technique
Underground drip irrigation belongs to the micro irrigation of full pipeline water delivery and part, it refers to that water is slow by the douche in buried burial
It flows out, penetrates into soil nearby, then by capillarity or gravity by moisture diffusion to for crop absorption benefit of entire root layer
With making the leakage of moisture and loss be reduced to bottom line, can be effectively suppressed invalid evaporation, improve water use efficiency, have
Significant water-saving result, saves labor simultaneously.
But current underground drip irrigation system is by artificially controlling mostly, and duty is mostly estimated with plantation experience,
Irrigation time is also set according to historical experience, it is more difficult to be obtained accurate irrigation quantity, be caused to be not possible to precisely adjust pouring water for crop
Amount, and automatic irrigation cannot be realized according to the breeding cycle of crop, to reduce Water Consumption in Agriculture to the maximum extent.In addition, ground
Lower trickle irrigation is placed in underground due to hollow billet, it is more difficult to carry out real-time monitoring to ground moistening situation and irrigation effect variation.
Therefore, those skilled in the art is dedicated to developing a kind of underground drip irrigation feedback control system, not for crops
Soil moisture demand with breeding time is collected and analyzes, and accomplishes scientific consumption of water, while to Irrigation Water and irrigation
It is monitored forecast, realizes that the automation dynamic of irrigation manages and controls.
Summary of the invention
In view of the above drawbacks of the prior art, the technical problem to be solved by the present invention is to monitor and precisely adjustably under
The irrigation quantity of drip irrigation system.
To achieve the above object, the present invention provides a kind of underground drip irrigation feedback control system, including host computer and terminal,
Terminal includes:
Sensing module, sensing module acquire soil information, and sensing module includes soil humidity sensor;
The information that sensing module acquires is converted into digital signal by signal processing module, signal processing module;
Execution module, execution module execute trickle irrigation movement;
Control module, control module control the movement of execution module;
Power module, power module are powered to sensing module, signal processing module, execution module, control module.
Further, sensing module includes two soil humidity sensors, and buried depth is respectively 30-40cm and 65-75cm.
Further, Integrated Algorithm in terminal controls irrigation amount according to agrotype and soil moisture content situation.
Further, the communication mode of terminal and host computer is wired or wireless.
Further, terminal is communicated with installation LabVIEW software on host computer.
Further, execution module includes piezoelectric actuator and corresponding driving circuit, and piezoelectric actuator is arranged to connect
Receive the instruction for opening or closing irrigation valve that control module issues.
Further, soil humidity sensor is arranged to be connected to signal processing module by variable connector.
Further, the soil humidity sensor of multiple measurement points can be connected in terminal.
Further, host computer can send to terminal and instruct, and change the algorithm integrated in terminal.
Further, host computer can send to terminal and instruct, and change the irrigated area information recorded in terminal.
The present invention is directed to through multi-layer Soil humidity detection, is established and is irrigated triggering and computation model, according to agrotype with
And soil moisture content situation determines irrigation quantity, and automatically controls irrigation, strong operability.System proposed by the invention can not only
Crop irrigation effect is improved, promotes plant growth, and agricultural water can be reduced, improves the utilization rate of water resource.
Further it is proposed that system cannot be only used for farmland underground trickle irrigation, more can be by host computer in irrigated area
The monitoring soil moistures of more more crops in farmland carries out big data and summarizes comparison, for more more crops in farmland in irrigated area irrigation water into
Row planning of science activities reduces irrigated area agricultural water consumption, improves irrigated area underground drip irrigation system water-use efficiency.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 is the underground drip irrigation feedback control system frame diagram of a preferred embodiment of the invention;
Fig. 2 is underground drip irrigation band and acquisition device position view of the invention;
Fig. 3 is that terminal of the invention irrigates decision flow chart.
Specific embodiment
Multiple preferred embodiments of the invention are introduced below with reference to Figure of description, keep its technology contents more clear and just
In understanding.The present invention can be emerged from by many various forms of embodiments, and protection scope of the present invention not only limits
The embodiment that Yu Wenzhong is mentioned.
In the accompanying drawings, the identical component of structure is indicated with same numbers label, everywhere the similar component of structure or function with
Like numeral label indicates.The size and thickness of each component shown in the drawings are to be arbitrarily shown, and there is no limit by the present invention
The size and thickness of each component.Apparent in order to make to illustrate, some places suitably exaggerate the thickness of component in attached drawing.
As shown in Figure 1, underground drip irrigation feedback control system includes the host computer and terminal by network connection, terminal distribution
In each irrigated area, terminal includes sensing module, signal processing module, signal processing module, execution module, control module, power supply
Module.
In the present embodiment, a computer is configured in terminal, which can also be using embedded device and its
Its module integrates.
Computer in host computer and terminal is respectively mounted LabVIEW software, and is realized by cable network or wireless network
Networking.Computer and host computer in terminal are mounted on ftp software, to realize that the FTP kit by LabVIEW is realized far
Number of passes is according to transmission.
Sensing module is specially the humidity sensor YL69 being inserted into soil, and buried depth is respectively 30-40cm and 65-75cm
Left and right, it is specific as shown in Figure 2.1 is underground drip irrigation hollow billet position in figure, and 2 and 3 be two humidity sensor riding positions.The biography
Sensor calculates the moisture content in soil and conductivity by transmitting frequency electromagnetic waves Measuring Dielectric Constant, having property
Can be high, adaptable, anticorrosive and waterproof and dampproof the features such as, excellent design and consummate manufacturing process can adapt to
Long-term field measurement works without particularly safeguarding.It meanwhile being the accurate water content data obtained in soil, the present embodiment
Using the output valve of the A0 pin of soil humidity sensor YL69 (power supply: 3.3V-5V), the output signal of the pin is simulation
Amount, thus it is more accurate, and the humidity of soil is bigger, and the analog value of A0 pin output is bigger.
Sensing module is connected to signal processing module by variable connector, to realize the number of multiple sensors in certain area
According to transmission.
Execution module includes actuator and corresponding driving circuit, and actuator used in the present embodiment is piezoelectric actuated
Device, specially piezoelectric bimorph can precisely realize the purpose for opening or closing irrigation valve, in turn under the influence of control signals
Precisely adjust irrigation quantity.
Control module includes controller, is connected with execution module, and control module passes through serial ports and is equipped with using soft
The computer of part LabVIEW is connected.
Power module is then used to power to sensing module, signal processing module, control module and execution module.
LabVIEW software is installed on terminal computer, farmland basic information (length, width, the gradient), underground can be inputted
Drip irrigation pipe network is laid with information (being laid with spacing, water dropper spacing), Crop Information (crop species, planting patterns) and soil information (soil
Earth type, soil water diffusance, hydraulic conductivity) etc..Computer in terminal can be according to acquisition data received and initial
Input value, calculate the water content of soil, and then irrigation quantity is determined according to agrotype and soil moisture content situation, and will
Whether the controller that with information such as required irrigation quantities passes in control module is irrigated.Specifically, terminal computer is according to just
Beginning amount and real-time monitoring information carry out data calculating, obtain the soil moisture of corresponding soil layer, and according to irrigation activation threshold value (crop
Required minimum soil moisture content Θ) it judges whether to irrigate.
Formula is FAWFor in soil can by vegetation using water and maximum utilized water resources ratio as control parameter,
The parameter is because of agrotype.According to Different Crop to the difference of water demand, for example cotton and wheat are 0.25, herbage/
Grassland is 0.50.According to different soil physical properties and agrotype inverse minimum soil moisture content Θ.
Soil to be divided into four layers, as shown in Fig. 2, the 1st layer of d1 depth is 10cm, layers 2 and 3 soil convenient for calculating
Earth is respectively 40cm and 60cm, and the 4th layer of depth of soil d4 is 100cm.2nd layer of soil and the 3rd layer of soil are that crop root zone is main
The main distribution of root range and underground drip irrigation Soil N-application.
The minimum of the 2nd layer of soil and the 3rd layer of soil irrigated needs can be pushed away using water content Θ is counter, calculate the
2,3 layers of critical soil water content Θ2,3。
Irrigation quantity is inquired by solving Richard's equation (formula).
In formulaFor diffusion component caused by soil water potential, KziFor component caused by gravity stream, P, R, Edir, Et1For
Precipitation and evaporation revenue and expenditure item, wherein EdirFor exposed soil evaporation, EtiFor i-th layer of soil vegetative cover water consumption, IΘ2,3The soil water caused by irrigate
Diffusion component.
Controller in control module receives the control signal issued on terminal computer, and sends control signals to and hold
Piezoelectric actuator in row module, with the opening of control valve, closing and opening time.
Due to being equipped with application software LabVIEW on terminal computer, it is thereby achieved that the soil volume that will be calculated
Water content is shown, and the volumetric water content of soil map data adjusted in real time is shown, to observe volumetric water content of soil
Variation tendency, and then determine the present embodiment propose monitor control system validity.Meanwhile it can also calculating in the terminal
Integrated Algorithm on machine, accurately to control the irrigation amount of crop.
To realize in the long-range real-time delivery to host computer of measurement result that will be stored on computer in each terminal, into
And realize Irrigated Area Soils humidity and irrigation monitoring, the present embodiment is realized using the FTP kit in LabVIEW.Specifically,
Ftp software is filled on the computer that needs are read, then open port is read with the FTP kit of LabVIEW.Due to this reality
It applies in example, is equipped with ftp software in the computer and host computer in terminal, it is thereby achieved that two-way communication, realizes long-range see
Survey the purpose of extensive Irrigated Area Soils water content.
Specific feedback control process is as shown in figure 3, humidity information in distribution terminal acquisition soil, according to making species
The parameters such as type, growth cycle call algorithm to calculate and irrigate activation threshold value, when soil moisture, which is greater than, irrigates activation threshold value, do not do
Movement.It when soil moisture, which is less than, irrigates activation threshold value, indicates that soil needs to irrigate, carries out the calculating of irrigation volume, control at this time
Module, which issues, irrigates signal to execution module, and execution module Open valve carries out irrigation operation.After irrigation, the above behaviour is repeated
Make, continues the humidity for monitoring soil, to judge whether to need to irrigate.By the above feedback control, the humidity of soil both ensure that
It controls in the OK range needed for plant growth, in turn avoids the waste that heavy irrigation causes water resource.
Soil moisture content information in each distributed terminal coverage area, irrigation volume information, by distributed terminal
Host computer is passed to, after host computer gets these information, in conjunction with agricultural land information in irrigated area, Crop Information, the data such as harvest information
Resource carries out big data analysis, can carry out planning of science activities to the agricultural production in entire irrigated area, improve production efficiency.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that the ordinary skill of this field is without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be within the scope of protection determined by the claims.
Claims (10)
1. a kind of underground drip irrigation feedback control system, which is characterized in that including host computer and terminal, the terminal includes:
Sensing module, the sensing module acquire soil information, and the sensing module includes soil humidity sensor;
The information that the sensing module acquires is converted into digital signal by signal processing module, the signal processing module;
Execution module, the execution module execute trickle irrigation movement;
Control module, the control module control the movement of the execution module;
Power module, the power module is to the sensing module, signal processing module, execution module, control module power supply.
2. underground drip irrigation feedback control system as described in claim 1, which is characterized in that the sensing module includes two soil
Earth humidity sensor, buried depth are respectively 30-40cm and 65-75cm.
3. underground drip irrigation feedback control system as described in claim 1, which is characterized in that Integrated Algorithm in the terminal, root
Irrigation amount is controlled according to agrotype and soil moisture content situation.
4. underground drip irrigation feedback control system as described in claim 1, which is characterized in that the terminal and the host computer
Communication mode is wired or wireless.
5. underground drip irrigation feedback control system as described in claim 1, which is characterized in that in the terminal and the host computer
Installation LabVIEW software is communicated.
6. underground drip irrigation feedback control system as described in claim 1, which is characterized in that the execution module includes that piezoelectricity causes
Dynamic device and corresponding driving circuit, the piezoelectric actuator are arranged to receive that the control module issues opens or closes filling
Irrigate the instruction of valve.
7. underground drip irrigation feedback control system as described in claim 1, which is characterized in that the soil humidity sensor is set
It is set to and the signal processing module is connected to by variable connector.
8. underground drip irrigation feedback control system as described in claim 1, which is characterized in that multiple surveys can be connected in the terminal
Measure the soil humidity sensor of point.
9. underground drip irrigation feedback control system as claimed in claim 3, which is characterized in that the host computer can be to the terminal
Instruction is sent, the algorithm integrated in the terminal is changed.
10. underground drip irrigation feedback control system as claimed in claim 3, which is characterized in that the host computer can be to the end
End sends instruction, changes the irrigated area information recorded in the terminal.
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