CN108886937A - A kind of terraced fields water and fertilizer irrigation pressure adaptive regulating system based on sensor network - Google Patents
A kind of terraced fields water and fertilizer irrigation pressure adaptive regulating system based on sensor network Download PDFInfo
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- CN108886937A CN108886937A CN201810612633.6A CN201810612633A CN108886937A CN 108886937 A CN108886937 A CN 108886937A CN 201810612633 A CN201810612633 A CN 201810612633A CN 108886937 A CN108886937 A CN 108886937A
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- 230000002262 irrigation Effects 0.000 title claims abstract description 55
- 238000003973 irrigation Methods 0.000 title claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000003337 fertilizer Substances 0.000 title claims abstract description 34
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 210000003608 fece Anatomy 0.000 claims abstract description 50
- 239000010871 livestock manure Substances 0.000 claims abstract description 50
- 238000002156 mixing Methods 0.000 claims abstract description 31
- 238000004891 communication Methods 0.000 claims abstract description 27
- 230000001276 controlling effect Effects 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000010355 oscillation Effects 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 5
- 239000002689 soil Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000010354 integration Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 235000015097 nutrients Nutrition 0.000 description 4
- 235000013399 edible fruits Nutrition 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004720 fertilization Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/007—Metering or regulating systems
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/04—Distributing under pressure; Distributing mud; Adaptation of watering systems for fertilising-liquids
- A01C23/047—Spraying of liquid fertilisers
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
- G05D16/2026—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means with a plurality of throttling means
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- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Water Supply & Treatment (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Fertilizing (AREA)
- Hydroponics (AREA)
Abstract
The terraced fields water and fertilizer irrigation pressure adaptive regulating system based on sensor network that the present invention relates to a kind of including liquid manure blending equipment and is respectively arranged at the wireless sensing node at main irrigation conduit front, middle part and rear portion；Wireless sensing node includes microcontroller, the first wireless communication module, overpressure sensor and the outer humidity sensor of pipe；Managing outer humidity sensor includes shallow-layer humidity sensor, middle layer humidity sensor and deep layer humidity sensor；First wireless communication module and the second wireless communication module being set at the liquid manure blending equipment are without lines matching；Liquid manure blending equipment is exported by pump variable frequency device；The humidity data of overpressure data and shallow-layer, middle layer and deep layer is uploaded to liquid manure blending equipment by wireless sensing node；Liquid manure blending equipment is based on wave and exports Controlling model, carries out automatic adjusument, and control pump variable frequency device is exported.System provided by the invention realizes terraced fields crop entirety uniform of application and effectively irrigates.
Description
Technical field
The present invention relates to reading intelligent agriculture facility field, especially a kind of terraced fields water and fertilizer irrigation pressure based on sensor network
Self-adaption regulation system.
Background technique
Water, fertilizer are the indispensable factors of crop growth, the Integration of Water into Fertilizer be agricultural irrigation and fertilising are melted for
One new technology, it is soluble in water the instant fertilizer of solid, irrigated with water band fertilizer, and have it is high-efficient, can be accurate
Control, dosage save, save the advantages that time power, have been acknowledged as improving the best-of-breed technology of liquid manure resource utilization in the world.Water
The advantages of fertile integrated technique, is as follows：(1) water resource is saved：Traditional crop irrigation generally takes broad irrigation and border irrigation,
On the one hand it causes water resource in transportational process largely to waste, on the other hand also results in waste in non-root area.And liquid manure is integrated
Change technology be dissolved fertilizer is soluble in water, be mixed into nutrient solution, then by dropper system, nutrient solution at drop-wise is infiltrated
Crop root considerably reduces and blends evaporation under moisture, improves water utilization rate, can usually save water resource ratio
Reach 30%-40%；(2) utilization efficiency of fertilizer is improved：Usual the Integration of Water into Fertilizer can take timing in conjunction with pipe-line system
Quantitative fertilization mode realizes concentration fertilising and balance fertilizing, both reduces and come the loss of fertilizer in this way, also reduce soil
Fixation to nutrient.With traditional fertilization Contrast on effect, fertile 30%-50% can be generally saved；(3) pesticide dosage is reduced：Using water
Fertile integrated technique can make the nutrient solution root system that goes directly facilitate to inhibit in this way to maintain the drying in crop non-root region
The growth of weeds, to reduce pesticide dosage；(4) Crops production and quality is improved：The work planted using the Integration of Water into Fertilizer
Object, under a small amount of multiple liquid manure supply, the fruit head born is big, full, and the yield of 10%-20% generally can be improved.
On the other hand, due to the reduction of pest and disease damage, the quantity of worm surname and malformed fruit greatly reduces, so that the quality of fruit is obviously changed
It is kind；(5) time and labour saving：The Integration of Water into Fertilizer generally uses pipe-line system to carry out liquid manure conveying, and with modern agriculture
Development, more and more cooperates automatic control technology.The personnel's spending for excavating water delivery ditch is both saved in this way, also saves watering
A large amount of manpower and material resources required for applying fertilizer.
Due to the special construction of terraced fields, there are differences in height relative to lower soil for the soil on upper layer, and liquid manure is on terraced fields top
It is sent into irrigation conduit after being deployed by liquid manure blending equipment, and soil is sprayed by micro-nozzle in pipe end.Terraced fields water
There are two problems for fertilizer pouring：First, since the size of hydraulic pressure is related with the vertical depth of water body, it is located at terraced fields the lowermost
Hydraulic pressure in pipeline is maximum, and the liquid manure that can directly result in the ejection of terraced fields lowermost layer is more, and the liquid manure of top ejection is less,
Terraced fields crop entirety unevenness of application, so that crop growth conditions consistency is poor；Second, if the hydraulic pressure of conveying is excessive, it is possible to
Lead to the pipeline breaking of lowermost layer, and if convey hydraulic pressure it is too small, will lead to top terraced fields and be unable to get effective irrigation.Therefore
How the irrigation pressure of automatic adjusument water and fertilizer irrigation pipeline just becomes main problem to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of, and the terraced fields water and fertilizer irrigation pressure adaptive based on sensor network adjusts system
System, to overcome defect existing in the prior art.
To achieve the above object, the technical scheme is that：A kind of terraced fields water and fertilizer irrigation pressure based on sensor network
Force adaptive regulating system, including a liquid manure blending equipment and it is respectively arranged at main irrigation conduit front, middle part and rear portion
Wireless sensing node；The wireless sensing node includes microcontroller, the first wireless communication module, is set to main irrigation conduit
Overpressure sensor interior and for monitoring overpressure and it is set to that main irrigation conduit is outer and pipe is outer to irrigate for monitoring
The outer humidity sensor of the pipe of region humidity；The outer humidity sensor of the pipe is shallow including being respectively used to the outer irrigated area of monitoring respective tube
Shallow-layer humidity sensor, middle layer humidity sensor and the deep layer humidity sensor of layer, middle layer and deep layer humidity；Described first
Wireless communication module, overpressure sensor, shallow-layer humidity sensor, middle layer humidity sensor and deep layer humidity sensor are equal
It is connected with the microcontroller；First wireless communication module and the second channel radio being set at the liquid manure blending equipment
Believe module without lines matching；
The liquid manure blending equipment is exported by pump variable frequency device；The wireless sensing node is by the overpressure
The overpressure data and the shallow-layer humidity sensor, middle layer humidity sensor and deep layer humidity sensor of sensor acquisition
The humidity data of the shallow-layer of acquisition, middle layer and deep layer, is uploaded to the liquid manure blending equipment；The liquid manure blending equipment according to
The data that the wireless sensing node uploads, and Controlling model is exported based on a wave, automatic adjusument is carried out, water pump is controlled
Frequency converter is exported.
In an embodiment of the present invention, first wireless communication module and second wireless communication module are adopted
With ZigBee wireless communication system.
In an embodiment of the present invention, the liquid manure blending equipment is exported Controlling model and is obtained and entered by the wave
The pipeline water, fertilizer fluid input port pressure value P (k) of the main irrigation conduit front, is achieved by the steps of：
Step S1：By the activity duration of the liquid manure blending equipment by the time for being divided into multiple preset period of time at equal intervals
Piece, and timeslice is numbered, note current time piece is serial number k；
Step S2：Pipeline water, fertilizer fluid input port pressure value when initial time piece 0 is obtained in the following way：
Wherein, PminFor the minimum input terminal pressure value of irrigation system, PmaxFor the maximum input terminal pressure value of irrigation system；
Step S3：The average value of the collected corresponding humidity of each layer humidity sensor is obtained in the following way：
Wherein, n is the number of each layer humidity sensor, HdIt (k) is that the humidity that n deep layer humidity sensor collects is equal
Value, Hm(k) the humidity mean value collected for n middle layer humidity sensor, Hs(k) it is collected for n shallow-layer humidity sensor
Humidity mean value；
Step S4：The weighted sum of error between each layer humidity mean value and goal-selling humidity value is obtained in the following way
Mean value He(k)：
Wherein, HdstdTo preset deep layer system target humidity, HmstdTo preset middle layer aims of systems humidity, HsstdIt is default
Shallow-layer aims of systems humidity, Hdstd<Hmstd<Hsstd；α, β, γ are default weighting regulation coefficient；
Step S5：Obtain pipeline water, fertilizer fluid input port pressure value P (k) in the following way：
Δ P=P (k)-P (k-1)=Kp·(He(k)-He(k-1))+Ki·He(k)
P (k)=Δ P (k)+P (k-1)+δ (k) A+ ε (k) B
B=η He(k), η > 0
Wherein, Δ P is with He(k) computing parameter, the step value of moment increment k formula PID are used as；δ (k) A and ε (k) B
It is sprung up for generating awave pressure, to accelerate spraying for liquid manure；K%2 is that the serial number k of timeslice is made modulo operation to 2,
With temporally piece put in order generate 0 and 1 alternating series；In two adjacent timeslices, P (k) has returning for A+B size
Difference is the wave of self-sustained oscillation if A=B；If A ≠ B, for the wave of the oscillation of the good fortune such as not, the value by adjusting A, B is constituted not
With the pressure wave pattern of form；η is default regulation coefficient；The period of wave determines by the duration of timeslice k, each
Timeslice is longer, then the period of wave is longer.
Compared to the prior art, the invention has the advantages that：A kind of terraced fields liquid manure filling based on sensor network
Pressure adaptive regulating system is irrigate, realizes the automatic adjusument to terraced fields automatic irrigation system output liquid manure pressure, and have
It is regularly present awave pressure to spring up, promotes liquid manure spraying in terminal tract, it is integrally uniform to realize terraced fields crop
Fertilising and effectively irrigation.
Detailed description of the invention
Fig. 1 is terrace irrigation pipeline and sensing network arrangement schematic diagram in one embodiment of the invention.
Fig. 2 is the multi-level sensor layout schematic diagram of different depth in one embodiment of the invention.
Specific embodiment
With reference to the accompanying drawing, technical solution of the present invention is specifically described.
A kind of terraced fields water and fertilizer irrigation pressure adaptive regulating system based on sensor network of the present invention, including a liquid manure tune
With equipment and it is respectively arranged at the wireless sensing node at main irrigation conduit front, middle part and rear portion；Wireless sensing node packet
Microcontroller, the first wireless communication module, the overpressure being set in main irrigation conduit and for monitoring overpressure is included to pass
Sensor and to be set to main irrigation conduit outer and manage the pipe of outer irrigated area humidity humidity sensor outside for monitor；Manage outer humidity
Sensor include the shallow-layer humidity sensor for being respectively used to the outer irrigated area shallow-layer of monitoring respective tube, middle layer and deep layer humidity,
Middle layer humidity sensor and deep layer humidity sensor；First wireless communication module, overpressure sensor, shallow-layer humidity sensor
Device, middle layer humidity sensor and deep layer humidity sensor are connected with microcontroller；First wireless communication module be set to
The second wireless communication module at liquid manure blending equipment without lines matching, the first wireless communication module and the second radio communication mold
Block is all made of ZigBee wireless communication system.；Liquid manure blending equipment is exported by pump variable frequency device；Wireless sensing node will
The overpressure data and shallow-layer humidity sensor, middle layer humidity sensor and deep layer humidity of overpressure sensor acquisition pass
The humidity data of shallow-layer, middle layer and deep layer that sensor acquires, is uploaded to liquid manure blending equipment；Liquid manure blending equipment is according to wireless
Sensing node upload data, and based on a wave export Controlling model, carry out automatic adjusument, control pump variable frequency device into
Row output.
Further, in the present embodiment, front, middle part, rear portion usually can be according to the percentages of the step number of terraced fields
It is divided, which can be formulated according to field condition by engineer.It should be noted that front is irrigation conduit when dividing
Initial end, be located at terraced fields top layer；Rear portion is the end of irrigation conduit, is located at terraced fields bottom.Front divides at least should be comprising most
The terraced fields block of top layer, and rear portion be divided to less should include the bottom terraced fields block.Such as certain terraced fields shares 10 ladder growing surfaces,
Front can account for 20%, i.e., highest 2 ladders；Rear portion can account for 20%, i.e., 2 minimum ladders, 6 ladders of remaining middle layer
It is then middle part.
Further, in the present embodiment, by water and fertilizer irrigation pipeline before, during and after arrange pressure sensor, and
Irrigated area before, during and after bury the humidity sensor of different depth obtain automatic water-fertilizer pouring pressure and pour
Effect is filled, and awave pressure is generated for giving to obtain better irrigation effect by pump variable frequency device.As shown in Figure 1,
Liquid manure blending equipment liquid manure is sent into the initial end of main irrigation conduit, the middle part node of pipeline, main irrigation conduit end all cloth
It is equipped with overpressure wireless sensing node as shown in Figure 2 and multi-level soil humidity sensor.On each wireless sensor node
It (is arranged vertically within by microcontroller (MCU) chip, wireless communication module, overpressure sensor, the outer humidity sensor of multiple pipes
It is multi-level in soil) embedded system is constituted, it is responsible for collection tube pressure sensor and manages outer multilayer depth humidity sensor
Value, and passed on the liquid manure blending equipment at the top of terraced fields after these values are summarized by wireless communication module.Data transmission
When, wireless sensing node utilizes respective wireless communication module everywhere, constitutes wireless sensor network by Zigbee protocol, will
Data summarization is sent into the liquid manure blending equipment being located at the top of terraced fields.Liquid manure blending equipment at the top of terraced fields, which is also equipped with, to be used for
The wireless communication module for receiving signal is transmitted for three position wireless sensing nodes before, during and after receiving the main irrigation conduit of terraced fields
The data information come.
Further, in the present embodiment, liquid manure blending equipment is exported Controlling model and obtained by wave enters main filling
The pipeline water, fertilizer fluid input port pressure value P (k) of pipeline front is irrigate, i.e., is output and then enter main irrigation conduit from liquid manure blending equipment
The liquid manure fluid pressure of initial end, is achieved by the steps of：
Step S1：By the activity duration of liquid manure blending equipment by the timeslice for being divided into multiple preset period of time at equal intervals,
And timeslice is numbered, note current time piece is serial number k；The size of each timeslice is arranged according to on-site actual situations, preferably
Ground, 1 minute or 30 seconds when accounting for when each timeslice accounts for；
Step S2：Pipeline water, fertilizer fluid input port pressure value when initial time piece 0 is obtained in the following way：
Wherein, PminFor the minimum input terminal pressure value of irrigation system, usually influenced by irrigation conduit terminal, if
Main irrigation conduit input terminal liquid manure fluid pressure be lower than this value, then in main irrigation conduit terminal, liquid in pipe insufficient pressure so that
Liquid enters soil by micro-nozzle, and irrigation process cannot achieve.PmaxFor the maximum input terminal pressure value of irrigation system, lead to
It is subjected to the influence of the maximum pressure resistance of irrigation conduit terminal, if main irrigation conduit input terminal liquid manure fluid pressure is higher than this value,
The least significant end of main pipeline, liquid in pipe pressure will be more than pipeline pressure resistance, and pipeline will rupture.
Step S3：The average value of the collected corresponding humidity of each layer humidity sensor is obtained in the following way：
Wherein, n is the number of each layer humidity sensor, HdIt (k) is that the humidity that n deep layer humidity sensor collects is equal
Value, Hm(k) the humidity mean value collected for n middle layer humidity sensor, Hs(k) it is collected for n shallow-layer humidity sensor
Humidity mean value；
Step S4：The weighted sum of error between each layer humidity mean value and goal-selling humidity value is obtained in the following way
Mean value He(k)：
Wherein, HdstdTo preset deep layer system target humidity, HmstdTo preset middle layer aims of systems humidity, HsstdIt is default
Shallow-layer aims of systems humidity, it is generally the case that Hdstd<Hmstd<Hsstd；α, beta, gamma is default weighting regulation coefficient, for adjusting three
The humidity value of a level is adjusted the weighing factor of system, numerical value generally according to on-site actual situations；Goal-selling is wet
Angle value can reaction system target irrigation effect.
Step S5：Obtain pipeline water, fertilizer fluid input port pressure value P (k) in the following way：
Δ P=P (k)-P (k-1)=Kp·(He(k)-He(k-1))+Ki·He(k)
P (k)=Δ P (k)+P (k-1)+δ (k) A+ ε (k) B
B=η He(k), η > 0
Wherein, in step s 5, increment type PID (proportional-integral-differential) control form is used to adjust.PID control
(proportional integral differential control) is a kind of common feedback closed loop control method in Industry Control, by proportional unit P, integral
Unit I and differentiation element D composition.The basis of PID control is ratio control；Integration control can eliminate steady-state error, but may increase
Add overshoot；Differential control can accelerate Great inertia system response speed and weaken overshoot trend, only use PID control in the present invention
Proportional component P and quadrature components I in mode processed.Δ P is with humidity error weighted sum mean value He(k) computing parameter, meter are used as
Calculation obtains the step value of moment increment k formula PID；PID controller output valve P (k-1) and timeslice when by by timeslice k-1
Step value Δ P when k is added, to obtain the PID controller output valve P (k) when timeslice k, last two δ (k) A of formula
It is sprung up with ε (k) B for generating awave pressure, to accelerate spraying for liquid manure；
K%2 is that the serial number k of timeslice made modulo operation to 2, put in order with temporally piece generate 0 and 1 sequence of interlocking
Column；The value of δ (k) A and ε (k) B two must have one in synchronization for 0, and when not being 0, δ (k) A is because coefficient is 1 to be
Increment, ε (k) B are decrements because coefficient is -1.Therefore, main irrigation conduit input terminal pressure value P (k) is in moment k and moment k+1
Two adjacent time pieces calculation formula be P (k)=Δ P (k)+P (k-1)+A and P (k+1)=Δ P (k+1)+P (k)-B.
In two adjacent timeslices, P (k) has the return difference of A+B size, is the wave of self-sustained oscillation if A=B；If A
≠ B is then the wave of the oscillation of the good fortune such as not, passes through and adjusts the value of A, B and constitute various forms of pressure wave patterns；η is default
Regulation coefficient, numerical value are adjusted according to on-site actual situations, to control the size of A and B；The period of wave is by timeslice k
Duration determine, each timeslice is longer, then the period of wave is longer.
Further, Controlling model is exported according to the wave, by above-mentioned adjusting, may be implemented to automate filling to terraced fields
The automatic adjusument of system output liquid manure pressure is irrigate, and regularly forms awave pressure and springs up, promotes liquid manure in terminal
Spraying in pipeline.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (3)
1. a kind of terraced fields water and fertilizer irrigation pressure adaptive regulating system based on sensor network, which is characterized in that including a water
Fertile blending equipment and the wireless sensing node for being respectively arranged at main irrigation conduit front, middle part and rear portion；The wireless biography
Sense node includes microcontroller, the first wireless communication module, the pipe for being set in main irrigation conduit and being used to monitor overpressure
Pressure sensor and to be set to main irrigation conduit outer and manage the pipe of outer irrigated area humidity humidity sensor outside for monitor；
The outer humidity sensor of the pipe includes the shallow-layer for being respectively used to the outer irrigated area shallow-layer of monitoring respective tube, middle layer and deep layer humidity
Humidity sensor, middle layer humidity sensor and deep layer humidity sensor；First wireless communication module, overpressure sensing
Device, shallow-layer humidity sensor, middle layer humidity sensor and deep layer humidity sensor are connected with the microcontroller；Described
One wireless communication module and the second wireless communication module being set at the liquid manure blending equipment are without lines matching；
The liquid manure blending equipment is exported by pump variable frequency device；The wireless sensing node senses the overpressure
The overpressure data and the shallow-layer humidity sensor, middle layer humidity sensor and deep layer humidity sensor of device acquisition acquire
Shallow-layer, middle layer and deep layer humidity data, be uploaded to the liquid manure blending equipment；The liquid manure blending equipment is according to
The data that wireless sensing node uploads, and Controlling model is exported based on a wave, automatic adjusument is carried out, pump variable frequency is controlled
Device is exported.
2. a kind of terraced fields water and fertilizer irrigation pressure adaptive regulating system based on sensor network according to claim 1,
It is characterized in that, first wireless communication module and second wireless communication module are all made of ZigBee wireless communication
System.
3. a kind of terraced fields water and fertilizer irrigation pressure adaptive regulating system based on sensor network according to claim 1,
It obtains it is characterized in that, the liquid manure blending equipment exports Controlling model by the wave into before the main irrigation conduit
The pipeline water, fertilizer fluid input port pressure value P (k) in portion, is achieved by the steps of：
Step S1：By the activity duration of the liquid manure blending equipment by the timeslice for being divided into multiple preset period of time at equal intervals,
And timeslice is numbered, note current time piece is serial number k；
Step S2：Pipeline water, fertilizer fluid input port pressure value when initial time piece 0 is obtained in the following way：
Wherein, PminFor the minimum input terminal pressure value of irrigation system, PmaxFor the maximum input terminal pressure value of irrigation system；
Step S3：The average value of the collected corresponding humidity of each layer humidity sensor is obtained in the following way：
Wherein, n is the number of each layer humidity sensor, Hd(k) the humidity mean value collected for n deep layer humidity sensor, Hm
(k) the humidity mean value collected for n middle layer humidity sensor, Hs(k) it is collected for n shallow-layer humidity sensor wet
Spend mean value；
Step S4：The mean value of the weighted sum of error between each layer humidity mean value and goal-selling humidity value is obtained in the following way
He(k)：
Wherein, HdstdTo preset deep layer system target humidity, HmstdTo preset middle layer aims of systems humidity, HsstdTo preset shallow-layer
Aims of systems humidity, Hdstd<Hmstd<Hsstd；α, β, γ are default weighting regulation coefficient；
Step S5：Obtain pipeline water, fertilizer fluid input port pressure value P (k) in the following way：
Δ P=P (k)-P (k-1)=Kp·(He(k)-He(k-1))+Ki·He(k)
P (k)=Δ P (k)+P (k-1)+δ (k) A+ ε (k) B
B=η He(k), η > 0
Wherein, Δ P is with He(k) computing parameter, the step value of moment increment k formula PID are used as；δ (k) A and ε (k) B are used for
It generates awave pressure to spring up, to accelerate spraying for liquid manure；K%2 is that the serial number k of timeslice is made modulo operation to 2, to press
Timeslice put in order generate 0 and 1 alternating series；In two adjacent timeslices, P (k) has the return difference of A+B size, if A
=B is then the wave of self-sustained oscillation；If A ≠ B, for the wave of the oscillation of the good fortune such as not, passes through and adjust the value of A, B and constitute different form
Pressure wave pattern；η is default regulation coefficient；The period of wave determines by the duration of timeslice k, each timeslice
Longer, then the period of wave is longer.
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| CN201810612633.6A CN108886937B (en) | 2018-06-14 | 2018-06-14 | Terrace liquid manure irrigation pressure self-adaptation governing system based on sensor network |
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| CN108886937B CN108886937B (en) | 2021-09-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114451257A (en) * | 2021-12-23 | 2022-05-10 | 珠海格力电器股份有限公司 | Irrigation method and device based on neural network, storage medium and electronic equipment |
Citations (5)
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| CN1145574A (en) * | 1995-01-25 | 1997-03-19 | 株式会社帕迪研究所 | Water management system for paddy field on hillside farm |
| KR20090050663A (en) * | 2007-11-16 | 2009-05-20 | 에프엑스코어솔루션(주) | Afforestation structure of dry region using water battery and construction method thereof |
| WO2011159585A2 (en) * | 2010-06-14 | 2011-12-22 | Pascalvac Inc. | Construction material made of algae, method for cultivating algae, and algae cultivation plant |
| CN204929883U (en) * | 2015-09-07 | 2016-01-06 | 定西华冠农牧业开发有限公司 | A kind of hillside rainwater harvesting irrigation control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114451257A (en) * | 2021-12-23 | 2022-05-10 | 珠海格力电器股份有限公司 | Irrigation method and device based on neural network, storage medium and electronic equipment |
| CN114451257B (en) * | 2021-12-23 | 2023-04-07 | 珠海格力电器股份有限公司 | Irrigation method and device based on neural network, storage medium and electronic equipment |
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| CN108886937B (en) | 2021-09-03 |
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