CN208768639U - Intelligent photovoltaic power generation water pumping irrigation system - Google Patents
Intelligent photovoltaic power generation water pumping irrigation system Download PDFInfo
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- CN208768639U CN208768639U CN201821197091.2U CN201821197091U CN208768639U CN 208768639 U CN208768639 U CN 208768639U CN 201821197091 U CN201821197091 U CN 201821197091U CN 208768639 U CN208768639 U CN 208768639U
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/12—Technologies relating to agriculture, livestock or agroalimentary industries using renewable energies, e.g. solar water pumping
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Abstract
The utility model discloses intelligent photovoltaic power generation irrigation by pumping devices, including photovoltaic panel, water storage device and controller, the both ends of the water storage device to be respectively arranged with solenoid valve, and the controller is connected to photovoltaic panel and solenoid valve；The electric energy that the controller acquisition photovoltaic panel issues stores its electric energy powers to controller, and the controller judges whether to need to irrigate according to field humidity, and controller controls corresponding solenoid valve and opens when needed, is irrigated using the water storage device.Using photovoltaic power generation, solves the irrigation problem in no power grid area.Provided with high water tank, pouring range is expanded using the high potential energy of water tank, eliminates motor pouring.
Description
Technical field
The utility model relates to field of intelligent control technology, mention more particularly to the intelligent photovoltaic power generation based on fuzzy control
Water irrigation rig and its control method.
Background technique
In China remote districts and mountain area knob, because urban distribution network can not cover, farmland can not be irrigated, crops
Natural precipitation can only be relied on, yield is very low.And in these areas, there are the photovoltaic resources of rich reserves, using off-network photovoltaic power generation,
It can be very good to solve local resident's Irrigation Problems.There is very big facilitation to crop yield is improved.
In existing photovoltaic power generation irrigation by pumping, the problem of being primarily present:
1, existing irrigation system volume is larger, is not suitable for the use of resident.
2, existing irrigation system not smart enoughization, Control system resolution are unable to meet demand.
Utility model content
In order to solve the deficiencies in the prior art, the utility model provides intelligent photovoltaic power generation water pumping irrigation system, this is
System has good promotional value for improving photovoltaic utilization efficiency, water conservation, extending unit durability.
Intelligent photovoltaic power generation water pumping irrigation system, including photovoltaic panel, water storage device and controller, the two of the water storage device
End is respectively arranged with solenoid valve, and the controller is connected to photovoltaic panel and solenoid valve；
The electric energy that the controller acquisition photovoltaic panel issues, the controller select the slope of power deviation, power vs. voltage
As input, the slope based on power deviation, power vs. voltage establishes fuzzy rule base, and realization chases after photovoltaic panel maximum power
Its electric energy is stored and is powered to controller by track, and the controller judges whether to need to irrigate according to field humidity, works as needs
When controller control corresponding solenoid valve and open, irrigated using the water storage device.
Further preferred technical solution, the water storage device and photovoltaic panel, which are arranged at, is higher by horizontal plane certain distance
Position, the water inlet end of the water storage device are provided with inlet water solenoid valve, the inlet water solenoid valve by piping connection to motor,
The motor is connected with water pump, and the water pump is arranged in water collecting equipment, and the water outlet of the water storage device is provided with water outlet
Solenoid valve, the water outlet solenoid valve are connected directly to the pipeline for irrigated farmland.
Further preferred technical solution, the water collecting equipment are catch pit or well.
Further preferred technical solution, the water storage device is interior to be equipped with liquid level sensor, and liquid level sensor is connected to control
Device processed, when liquid level is lower than setting value, controller automatically turns on water pump, opens simultaneously inlet water solenoid valve, will be in water collecting equipment
Water mentions water storage device.
Further preferred technical solution is equipped with soil humidity sensor in field, and soil humidity sensor is by acquisition
Data are transmitted to controller, and the controller is according to the collected data compared with setting humidity threshold according to demand of plant growth
Compared with, when the data of soil humidity sensor acquisition are lower than demand of plant growth setting humidity threshold, then crops need to pour,
Controller automatically opens water outlet solenoid valve, and the water in water storage device is poured onto farmland.
Further preferred technical solution, the liquid level sensor be by level sensing point metal probe H1, H2, H3 and
The comparison circuit composition of triode Q7, Q8, Q9, comparator IC3, resistance composition；
3 level sensing points are set in the water storage device, are respectively arranged metal probe, level sensing in level sensing point
Point metal probe H1 corresponding is low water level, and level sensing point metal probe H2 corresponding is middle-grade water level, level sensing point
Metal probe H3 corresponding is superelevation alarm water level, and metal probe passes through conducting wire respectively and connect with comparison circuit, by comparing high
Low two kinds of level identify high-low water level.
Further preferred technical solution, the controller are connected by driving circuit for electromagnetic valve with solenoid valve, the electricity
Electromagnetic valve driving circuit includes the light-coupled isolation unit being connected with controller, the light-coupled isolation unit successively with switch unit, limit
It flows unit and afterflow unit is connected, the current limiting unit prevents overcurrent breakdown switch unit for limiting electric current.
Further preferred technical solution, the soil humidity sensor are connected to controller by humidity measuring circuit,
The humidity measuring circuit is made of chip IC 1, in-phase amplifier, filter, and the chip detects moisture signal and by same phase
Moisture signal is converted into the signal of DSP identification by amplifier, using being transmitted to controller after filter filtering.
Compared with prior art, the utility model has the beneficial effects that
1, the utility model uses photovoltaic power generation, solves the irrigation problem in no power grid area.Provided with high water tank, benefit
Pouring range is expanded with the high potential energy of water tank, eliminates motor pouring.
2, the utility model devises a kind of humidity measuring circuit, and real-time detection crops soil temperature and humidity works as crops
When requiring supplementation with moisture, automatic-watering to improve crop yield, while having been saved and having used water.
3, the utility model devises a kind of liquid level detection circuit.The circuit is made of comparator, can be accurately distinguished low
Water level, middle water level, high water level.High water level exports high level, low water level exports low level.Detection circuit is simple, easy to accomplish, square
Just.
4, the utility model improves a kind of driving circuit for electromagnetic valve.The circuit increases light-coupled isolation, current-limiting inductance, continues
Flow the elements such as diode.Interference of the site environment to controller has been isolated in photoelectric coupled circuit, protects controller.Current-limiting inductance prevents
Solenoid valve opens moment and high current occurs, protects solenoid valve.When freewheeling diode is used for electromagnetism valve breakdown, solenoid valve is avoided to occur
High voltage.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is that the control circuit of the utility model constitutes figure；
Fig. 3 is the photovoltaic power generation main circuit diagram of the utility model；
Fig. 4 is the liquid level detection circuit figure of the utility model；
Fig. 5 is the water pump control circuit figure of the utility model；
Fig. 6 is the driving circuit for electromagnetic valve figure of the utility model；
Fig. 7 is the humidity measuring circuit figure of the utility model；
In figure, 1, catch pit, 2, motor, 3, inlet water solenoid valve, 4, photovoltaic panel, 5, high water tank, 6, water outlet solenoid valve,
7, controller circuitry.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
In a kind of typical embodiment of the application, intelligent photovoltaic power generation water pumping irrigation system, including photovoltaic are provided
Plate 4, high water tank 5, inlet water solenoid valve 3, water outlet solenoid valve 6, motor 2, control circuit 7, control circuit include photovoltaic power generation
Main circuit, liquid level detection circuit, water pump control circuit, driving circuit for electromagnetic valve and humidity measuring circuit.
As shown in Figure 1, catch pit 1 collects rainfall usually, it is conditional to dig a well.Daytime, when sun abundance, control
Device acquires the electric energy that photovoltaic panel issues, and is stored in battery.When needed, energy release water supply in the battery is stored
Pump, for pouring.
It is equipped with liquid level sensor in water tank, when liquid level is lower than setting value 1, automatically turns on water pump, opens simultaneously into water electricity
Water in catch pit is mentioned water tank by magnet valve.The purpose that water tank is arranged is, using the high potential energy of water, to improve pouring area.Together
When can save and poured using motor.When liquid level is higher than setting value 2, inlet water solenoid valve is automatically closed.Stop water tank water intake.?
Field is equipped with soil humidity sensor, sets humidity threshold according to demand of plant growth, when detecting that crops need to pour
When, controller automatically opens water outlet solenoid valve, and the water in water tank is poured onto farmland.Water tank in the specific implementation, water tank can replace
As long as being changed to the equipment that can satisfy water storage requirement.
In specific hardware circuit design, by photovoltaic panel, BOOST converter, voltage detecting, current detecting, liquid level control
System, driving circuit for electromagnetic valve etc. are constituted.As shown in Figure 2.
Photovoltaic power generation main circuit as shown in figure 3, photovoltaic power generation main circuit realize the function that converts solar energy into electrical energy to
Load supplying, while extra electric energy is stored in battery in case night use.Mainly by photovoltaic panel PV, boost circuit
(L2, D5, Q2 composition), accumulator charging/discharging circuit, load circuit composition.
Liquid level detection circuit, that is, liquid level sensor, as shown in figure 4, water tank in be arranged 3 level sensing points, be respectively H1,
H2,H3.Metal probe is arranged in level sensing point.H1 corresponding is low water level, and H2 corresponding is middle-grade water level, and H3 is corresponding to be
Superelevation alarm water level.Metal probe is connect by conducting wire with comparator.
Liquid level detection circuit is made of level sensing point metal probe H1, H2, H3 and triode Q7, Q8, Q9, IC3
Comparison circuit constitute.(a part that test point metal probe H1, H2, H3 are liquid level sensor).
Working principle is: when liquid level reaches surcharge water level H3, triode Q7 conducting, and Q8 cut-off, Q8 collector output height
Level.Q9 conducting, Q9 collector export low level.Comparator exports high level at this time, and Q10 conducting exports high level.
When liquid level is in low water level H1, level sensing exports low level.
This circuit cleverly introduces comparator.By comparing two kinds of level, to identify high-low water level.With letter
Single, accurate feature.
For water pump control circuit as shown in figure 5, when detecting that water tank is in low water level, controller exports high level, open-minded
MOSFET Q6.Open water pump.Add water into water tank.When detecting that water tank is in high water level, controller exports low level, closes
Close MOSFET Q6.It switches off the pump.
Driving circuit for electromagnetic valve as shown in fig. 6, driving circuit for electromagnetic valve by optocoupler OK1, MOSFET Q5, freewheeling diode
D9, current-limiting inductance L5 composition.Optocoupler OK1 is designed, the interference from scene has been isolated, protects director port.
Sustained diode 9 can protect solenoid valve when closed, prevent high voltage from striking back.The characteristics of this circuit, is to increase
Add inductance L5, the purpose of limitation electric current can be played when opening, prevents overcurrent from puncturing Q5.To protect power
MOSFET。
Humidity measuring circuit, that is, soil humidity sensor, as shown in fig. 7, humidity measuring circuit is by chip IC 1, same to Xiang Fang great
Device (U2B, R17, R18), filter (R19, C7) composition.The low-pass filter of R19, C7 composition can be very good to eliminate spuious dry
It disturbs.In-phase amplifier is used to for moisture signal being converted into the signal of DSP identification.The function of humidity measuring circuit is real-time detection soil
Earth humidity value, and it is transmitted to dsp controller, it is poured for judging whether in next step.
In another examples of implementation, in control method, this application discloses maximum power tracing control strategies
(MPPT), fuzzy logic control is introduced, a kind of maximum power tracing control method for photovoltaic generating system is devised.It is fuzzy
Logic control is a gamma controller, has good adaptability to this non-linear object of photovoltaic power generation.Pass through emulation
Analysis, also further demonstrates the validity of present aspect improved method.
The MPPT realized based on fuzzy control is broadly divided into three steps, respectively blurring, fuzzy reasoning, ambiguity solution.
Step 1: blurring
By the analysis to photovoltaic generating system, the utility model selects the slope of power deviation, power vs. voltage as mould
The input of fuzzy controllers.This has very big difference with fuzzy controller in the prior art.The input of fuzzy controller affects control
Efficiency processed.
About the acquisition of data, to sample photovoltaic generating system voltage using dsp controller, current value is obtained.
Define deviation E, slope EC, control amount u subset be { small, in, big }, domain is [0,1].
The calculation formula of deviation E:
E (k)=p (k)-p (k-1),
In formula, P (k) is the photovoltaic panel generated output of current time acquisition, and P (k-1) is the photovoltaic panel of previous moment acquisition
Power.
The calculation formula of power vs. voltage slope:
In formula, P (k) is the photovoltaic panel generated output of current time acquisition, and P (k-1) is the photovoltaic panel of previous moment acquisition
Power.U (k) is current time photovoltaic board system voltage.U (k-1) is the photovoltaic board system voltage of previous moment acquisition.Control amount
U is photovoltaic generating system output voltage.
Using Triangleshape grade of membership function.
Step 2: fuzzy reasoning
Fuzzy reasoning uses Mai Dani reasoning.
(1) reasoning algorithm uses:
ηi=μei[e(k)]∧μeci[ec (k)]=min (μei[e(k)]●μeci[ec(k)])
ηiFor fuzzy reasoning calculated value；μei[e (k)] is that deviation is subordinate to angle value；μeci[ec (k)] is that slope is subordinate to angle value；^
For minimizing operation.
(2) fuzzy rule base is established
When designing fuzzy rule, the characteristics of the utility model has extensively studied photovoltaic power generation, the work to photovoltaic power generation
Process is analysed in depth.It is Promethean to propose the fuzzy rule base based on actual motion.
Fuzzy rule base establishes thinking citing: if deviation, deviation slope be all it is small, this shows system at present close to most
It is high-power, control amount should export it is small, in order to avoid cause to shake.
Corresponding rule design are as follows:
The small and EC is of IF E is is small, then u is is small.
If deviation, deviation slope are all greatly, this shows that system deviates from maximum power point at present, and control amount should export greatly,
To realize maximum power tracing as early as possible.
Corresponding rule design are as follows:
IF E is is big, and and EC is is big, then u is is big.
According to the above mentality of designing, following 9 fuzzy rules are designed altogether.
The small and EC is of IF E is is small, then u is is big.
In the small and EC is of IF E is, then in u is.
The small and EC is of IF E is is big, then u is is big.
And EC is is small in IF E is, then u is is big.
In IF E is in and EC is, then in u is.
And EC is is big in IF E is, then u is is big.
IF E is is big, and and EC is is small, then u is is small.
In the big and EC is of IF E is, then in u is.
IF E is is big, and and EC is is big, then u is is big.
Step 3: ambiguity solution
Ambiguity solution uses gravity model appoach.Ambiguity solution calculation method are as follows:
In formula, ηiFor fuzzy reasoning calculated value；μiTo be subordinate to angle value；U is control amount, i.e. DC bus-bar voltage control reference
Value is above-mentioned photovoltaic generating system output voltage.
By simulation analysis, this method starts to capture power quickly, captures maximum power at 0.3 second.And classical calculation
Method started to capture power at 0.8 second.And the method for the utility model is shaken smaller in maximum power point.Comprehensive performance is wanted
Better than classical hill-climbing algorithm.
Another examples of implementation of the application also disclose intelligent irrigation control strategy, firstly, being poured according to plant growth setting
Filling task, second, sluggish relatively control method is introduced in a program, is avoided solenoid valve from floating in Near Threshold and is opened and closed.
In order to irrigate, save water resource on demand, the utility model devises intelligent irrigation control strategy.According to plant growth
Period to water source demand, formulates the plan of pouring.Meanwhile to avoid solenoid valve from toggling in Near Threshold, the utility model melts
Enter hysteresis and compares control strategy.The utility model has for improving photovoltaic utilization efficiency, water conservation, extending unit durability
Good promotional value.
Specifically, sluggish principle relatively is: soil moisture setting value is defined as H, and the actually detected value of soil moisture is h,
Introduce departure δ.Compared by winding, when h is greater than > H+ δ, closes solenoid valve.As h < H- δ, opens solenoid valve.Pass through
This mode, avoid h and H it is close when, the failure frequently opened back and forth.
Intelligent irrigation strategy has not only saved water source, while substantially increasing solenoid valve service life.Reduce use at
This.
The utility model improves a kind of maximum power tracing control method (MPPT), meanwhile, the utility model proposes
A kind of intelligent irrigation control strategy.
The improved MPPT control method of the utility model is realized using fuzzy intelligentcontrol.By analysis, this is practical
Novel selection difference power, slope are inputted as fuzzy controller, meanwhile, on the basis of studying photovoltaic power generation characteristic, devise conjunction
The fuzzy rule base of reason.By simulation analysis, the fuzzy control method of the utility model design has fast, accurately excellent spy
Point.
The utility model introduces fuzzy logic control, devises a kind of maximum power tracing control for photovoltaic generating system
Method processed.Fuzzy logic control is a gamma controller, has good adaptation energy to this non-linear object of photovoltaic power generation
Power.By simulation analysis, the validity of present aspect improved method is also further demonstrated.
In order to irrigate, save water resource on demand, the utility model devises intelligent irrigation control strategy.According to plant growth
Period to water source demand, formulates the plan of pouring.Meanwhile to avoid solenoid valve from toggling in Near Threshold, the utility model melts
Enter hysteresis and compares control strategy.The utility model has for improving photovoltaic utilization efficiency, water conservation, extending unit durability
Good promotional value.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (7)
- The water pumping irrigation system 1. intelligent photovoltaic generates electricity, characterized in that including photovoltaic panel, water storage device and controller, the water storage The both ends of device are respectively arranged with solenoid valve, and the controller is connected to photovoltaic panel and solenoid valve；The electric energy that the controller acquisition photovoltaic panel issues, its electric energy is stored and is powered to controller, the controller root Judge whether to need to irrigate according to field humidity, controller controls corresponding solenoid valve and opens when needed, fills using the water storage It sets and is irrigated.
- The water pumping irrigation system 2. intelligent photovoltaic as described in claim 1 generates electricity, characterized in that the water storage device and photovoltaic panel Be arranged at the position for being higher by horizontal plane certain distance, the water inlet end of the water storage device is provided with inlet water solenoid valve, it is described into By piping connection to motor, the motor is connected water solenoid valve with water pump, and the water pump is arranged in water collecting equipment, institute The water outlet for stating water storage device is provided with water outlet solenoid valve, and the water outlet solenoid valve is connected directly to the pipe for irrigated farmland Road.
- The water pumping irrigation system 3. intelligent photovoltaic as described in claim 1 generates electricity, characterized in that liquid is equipped in the water storage device Level sensor, liquid level sensor are connected to controller, and when liquid level is lower than setting value, controller automatically turns on water pump, beat simultaneously It drives water solenoid valve into, the water in water collecting equipment is mentioned into water storage device.
- The water pumping irrigation system 4. intelligent photovoltaic as described in claim 1 generates electricity, characterized in that passed in field equipped with soil moisture The data of acquisition are transmitted to controller by sensor, soil humidity sensor, and the controller is according to the collected data and according to plant Object growth demand setting humidity threshold compares, when the data of soil humidity sensor acquisition are wet lower than demand of plant growth setting When spending threshold value, then crops need to pour, and controller automatically opens water outlet solenoid valve, and the water in water storage device is poured onto agriculture Field.
- The water pumping irrigation system 5. intelligent photovoltaic as claimed in claim 3 generates electricity, characterized in that the liquid level sensor is by liquid The comparison circuit composition of position test point metal probe H1, H2, H3 and triode Q7, Q8, Q9, comparator IC3, resistance composition 's；3 level sensing points are set in the water storage device, are respectively arranged metal probe, level sensing point gold in level sensing point It is low water level that it is corresponding, which to belong to the H1 that pops one's head in, and level sensing point metal probe H2 corresponding is middle-grade water level, level sensing point metal The H3 that pops one's head in corresponding is superelevation alarm water level, and metal probe passes through conducting wire respectively and connect with comparison circuit, by comparing height two Kind level identifies high-low water level.
- The water pumping irrigation system 6. intelligent photovoltaic as described in claim 1 generates electricity, characterized in that the controller passes through solenoid valve Driving circuit is connected with solenoid valve, and the driving circuit for electromagnetic valve includes the light-coupled isolation unit being connected with controller, the light Coupling isolated location is successively connected with switch unit, current limiting unit and afterflow unit, and the current limiting unit is for limiting electric current placement Overcurrent breakdown switch unit.
- The water pumping irrigation system 7. intelligent photovoltaic as claimed in claim 4 generates electricity, characterized in that the soil humidity sensor is logical It crosses humidity measuring circuit and is connected to controller, the humidity measuring circuit is made of chip IC 1, in-phase amplifier, filter, institute It states chip detection moisture signal and moisture signal is converted into the signal of DSP identification by in-phase amplifier, filtered using filter Controller is transmitted to after wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821197091.2U CN208768639U (en) | 2018-07-26 | 2018-07-26 | Intelligent photovoltaic power generation water pumping irrigation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821197091.2U CN208768639U (en) | 2018-07-26 | 2018-07-26 | Intelligent photovoltaic power generation water pumping irrigation system |
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| Publication Number | Publication Date |
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| CN208768639U true CN208768639U (en) | 2019-04-23 |
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ID=66154802
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| CN201821197091.2U Active CN208768639U (en) | 2018-07-26 | 2018-07-26 | Intelligent photovoltaic power generation water pumping irrigation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112167026A (en) * | 2020-08-26 | 2021-01-05 | 南方电网电动汽车服务有限公司 | Intelligent photovoltaic power generation energy storage irrigation system |
| CN113575387A (en) * | 2021-07-28 | 2021-11-02 | 湖北省水利水电科学研究院 | Irrigation device based on solar energy power generation |
-
2018
- 2018-07-26 CN CN201821197091.2U patent/CN208768639U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112167026A (en) * | 2020-08-26 | 2021-01-05 | 南方电网电动汽车服务有限公司 | Intelligent photovoltaic power generation energy storage irrigation system |
| CN113575387A (en) * | 2021-07-28 | 2021-11-02 | 湖北省水利水电科学研究院 | Irrigation device based on solar energy power generation |
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