CN104663368A - Feedback control-based farmland irrigation system and method - Google Patents
Feedback control-based farmland irrigation system and method Download PDFInfo
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- CN104663368A CN104663368A CN201510101748.5A CN201510101748A CN104663368A CN 104663368 A CN104663368 A CN 104663368A CN 201510101748 A CN201510101748 A CN 201510101748A CN 104663368 A CN104663368 A CN 104663368A
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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
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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
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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
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- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Environmental Sciences (AREA)
- Soil Sciences (AREA)
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Abstract
The invention relates to a feedback control-based farmland irrigation system and method. The method comprises the steps: storing parameters of crop types, crop growth stage division, each growth stage time T, a needed soil moisture content required value X of each growth stage, a needed soil moisture content required lower limit value Y of each growth stage, and an irrigation quota Z of each growth stage into a control center computer; calculating the current growth stage of crops by the control center computer. A soil moisture content sensor is used for collecting farmland soil moisture content information, and the control center computer is used for performing analytical judgment on the soil moisture content information and weather information and then controlling irrigation, so the aim of automatically irritating farmlands can be achieved. The method is simple and efficient in implementation, is intuitive in operation and easy to understand, and is obvious in water saving; compared with an extensive irrigation method, water is saved by more than 40 percent; few-person operation or unattended operation can be truly realized, and the labor cost is greatly reduced.
Description
Technical field
The present invention relates to irrigation and water conservancy areas of information technology, be specifically related to a kind of farm irrigation system based on FEEDBACK CONTROL and method.
Background technology
China is as large agricultural country, Water Consumption in Agriculture accounts for about 80% of total water consumption, but because agricultural irrigation efficiency is generally low, the availability of water resource is only 45%, and the high country of water utilization rate has reached 70% ~ 80%, and northern China each province water resource famine, not only efficiency is low, cost is high but also waste very carrys out weight for plant is watered to use traditional approach for many years.Thus, solving the problem of agricultural irrigation water, is very important for alleviation the in short supply of water resource.
Developed to insufficient irrigation by traditional sufficient irrigation, monitoring and prediction is carried out to Irrigation Water, actual dynamic management.Adopt sensor to monitor soil tilth, realize the automation of irrigation management.High-efficiency agriculture and precision agriculture require that we must improve the availability of water resource.Will really realize the efficient of water resource, only voucher item water-saving irrigation technique can not solve.
Summary of the invention
The present invention, in order to overcome the deficiency of above technology, provides and a kind ofly realizes Precision Irrigation, improves the farm irrigation system based on FEEDBACK CONTROL of water utilization rate and method.
The present invention overcomes the technical scheme that its technical problem adopts:
This, based on the farmland irrigation method of FEEDBACK CONTROL, comprises the following steps.
A) soil moisture content needed for soil moisture content required value X, each vegetative stage needed for crop species, crop growth stage division, each vegetative stage time T, each vegetative stage is required that the parameter that lower limit Y and each vegetative stage irrigate limit Z is stored to control centre's calculator;
B) sow, control centre's calculator take sowing time as start time point recorded time value T1, time value T1 and each vegetative stage time of crop T compares by control centre's calculator, calculates when the vegetative stage residing for previous crop according to the division of crop growth stage;
C) control centre's calculator accepts meteorological information, and obtaining having following n day has moderate rain or heavy rain or following n day light rain or following n day without the meteorological information value of rain;
If d) there are moderate rain or heavy rain following n day, then control centre's calculator controls to be connected to the closed electromagnetic valve watering irrigation pipe, does not irrigate;
If e) there is light rain following n day, then soil moisture content value X1 measured in real time by soil moisture content sensor, when the soil moisture content value X1 measured in real time be less than soil moisture content needed for this vegetative stage require lower limit Y or be greater than soil moisture content needed for this vegetative stage require lower limit Y and be less than soil moisture content required value X needed for this vegetative stage time, control centre's calculator controls to be connected to the magnetic valve watering irrigation pipe and opens, irrigate, until when X1 is more than or equal to soil moisture content required value X needed for this vegetative stage and is less than this vegetative stage irrigation limit Z, control centre's calculator controls closed electromagnetic valve, stop irrigating, when the soil moisture content value X1 measured in real time is greater than soil moisture content required value X needed for this vegetative stage, control centre's calculator controls closed electromagnetic valve, does not irrigate.
If f) 3 days futures are without rain, then soil moisture content value X2 measured in real time by soil moisture content sensor, when the soil moisture content value X2 measured in real time be less than soil moisture content needed for this vegetative stage require lower limit Y or be greater than soil moisture content needed for this vegetative stage require lower limit Y and be less than soil moisture content required value X needed for this vegetative stage time, control centre's calculator controls to be connected to the magnetic valve watering irrigation pipe and opens, irrigate, until when X2 is more than or equal to soil moisture content required value X needed for this vegetative stage and is less than this vegetative stage irrigation limit Z, control centre's calculator controls closed electromagnetic valve, stop irrigating, when the soil moisture content value X2 measured in real time is greater than soil moisture content required value X needed for this vegetative stage, control centre's calculator controls closed electromagnetic valve, does not irrigate.
G) time value T1 and n sues for peace by control centre's calculator, obtain time value T2, time value T2 and each vegetative stage time of crop T compares by control centre's calculator, recalculates the vegetative stage drawn when residing for previous crop according to the division of crop growth stage;
H) repeated execution of steps c) to step g).
Above-mentioned steps c) in n value be 3.
In order to realize rational fertilising, chase after water, above-mentioned steps a) in every one-phase crop fertilization required value is stored to control centre's calculator, control centre's calculator is according to every one-phase crop fertilization required value determining step b) before and/or step b) after the need of fertilising, when needs apply fertilizer, soil moisture content value X3 measured in real time by soil moisture content sensor, when being less than the soil moisture content value in this section of crop fertilization required value as X3, control centre's calculator controls to be connected to the magnetic valve watering irrigation pipe and opens, irrigate, until when X3 equals 80% of soil moisture content required value X needed for this long stage, control centre's calculator controls to be connected to the closed electromagnetic valve watering irrigation pipe, stop irrigating, when X3 is greater than the soil moisture content value in this stage crop fertilization required value, control centre's calculator controls to be connected to the closed electromagnetic valve watering irrigation pipe, does not irrigate.
In order to realize Long-distance Control, also comprising and utilizing remote control computer and/or intelligent movable equipment to be connected to control centre's calculator to obtain soil moisture content measurement value sensor and the step of Long-distance Control control centre calculator by GPRS, 3G communication module.
This, based on the farmland irrigating system of FEEDBACK CONTROL, comprises Crop Information administration module, environmental information management module and intelligent irrigation module; Described Crop Information administration module comprises control centre's calculator, and it stores soil moisture content needed for soil moisture content required value, each vegetative stage needed for crop species, crop growth stage division, each vegetative stage time, each vegetative stage and requires that lower limit and each vegetative stage irrigate the parameter of limit; Described environmental information management module is comprised and to be arranged in farmland and by GPRS, 3G model calling in the soil moisture content sensor of control centre's calculator and the weather information data center being connected to control centre's calculator by network; Described intelligent irrigation module comprises being arranged at waters on irrigation pipe and by the magnetic valve of GPRS, 3G model calling in control centre's calculator.
In order to realize Long-distance Control, also comprise by GPRS, 3G model calling in control centre's computer remote computer for controlling.
In order to realize Long-distance Control, also comprise by the intelligent movable equipment of GPRS, 3G model calling in control centre's calculator.
The invention has the beneficial effects as follows: agricultural land soil soil moisture information is collected and by control centre's calculator information on soil moisture and meteorological information carried out analysis judge after control irrigation, farmland can reach the object of automatic irrigation.This method for designing realizes simple efficient, operates visual and understandable, and water saving obviously, is compared extensive irrigation and can be economized on water more than 40%.And few man on duty even unmanned truly can be accomplished, greatly save cost of labor.
Accompanying drawing explanation
Fig. 1 is system syndeton schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1, the present invention will be further described.
This, based on the farmland irrigation method of FEEDBACK CONTROL, comprises the following steps.
A) soil moisture content needed for soil moisture content required value X, each vegetative stage needed for crop species, crop growth stage division, each vegetative stage time T, each vegetative stage is required that the parameter that lower limit Y and each vegetative stage irrigate limit Z is stored to control centre's calculator;
B) sow, control centre's calculator take sowing time as start time point recorded time value T1, time value T1 and each vegetative stage time of crop T compares by control centre's calculator, calculates when the vegetative stage residing for previous crop according to the division of crop growth stage;
C) control centre's calculator accepts meteorological information, and obtaining having following n day has moderate rain or heavy rain or following n day light rain or following n day without the meteorological information value of rain;
If d) there are moderate rain or heavy rain following n day, then control centre's calculator controls to be connected to the closed electromagnetic valve watering irrigation pipe, does not irrigate;
If e) there is light rain following n day, then soil moisture content value X1 measured in real time by soil moisture content sensor, when the soil moisture content value X1 measured in real time be less than soil moisture content needed for this vegetative stage require lower limit Y or be greater than soil moisture content needed for this vegetative stage require lower limit Y and be less than soil moisture content required value X needed for this vegetative stage time, control centre's calculator controls to be connected to the magnetic valve watering irrigation pipe and opens, irrigate, until when X1 is more than or equal to soil moisture content required value X needed for this vegetative stage and is less than this vegetative stage irrigation limit Z, control centre's calculator controls closed electromagnetic valve, stop irrigating, when the soil moisture content value X1 measured in real time is greater than soil moisture content required value X needed for this vegetative stage, control centre's calculator controls closed electromagnetic valve, does not irrigate.
If f) 3 days futures are without rain, then soil moisture content value X2 measured in real time by soil moisture content sensor, when the soil moisture content value X2 measured in real time be less than soil moisture content needed for this vegetative stage require lower limit Y or be greater than soil moisture content needed for this vegetative stage require lower limit Y and be less than soil moisture content required value X needed for this vegetative stage time, control centre's calculator controls to be connected to the magnetic valve watering irrigation pipe and opens, irrigate, until when X2 is more than or equal to soil moisture content required value X needed for this vegetative stage and is less than this vegetative stage irrigation limit Z, control centre's calculator controls closed electromagnetic valve, stop irrigating, when the soil moisture content value X2 measured in real time is greater than soil moisture content required value X needed for this vegetative stage, control centre's calculator controls closed electromagnetic valve, does not irrigate.
G) time value T1 and n sues for peace by control centre's calculator, obtain time value T2, time value T2 and each vegetative stage time of crop T compares by control centre's calculator, recalculates the vegetative stage drawn when residing for previous crop according to the division of crop growth stage;
H) repeated execution of steps c) to step g).
Step c) in n value be 3.For the crop of the overwhelming majority, in 3 days, generally judge that whether rainfall can meet control accuracy with comparing of soil moisture content value to meteorological information, can guarantee again the growth not affecting crop.By above model construction, farmland can reach the object of automatic irrigation.This method for designing realizes simple efficient, operates visual and understandable, and water saving obviously, is compared extensive irrigation and can be economized on water more than 40%.And few man on duty even unmanned truly can be accomplished, greatly save cost of labor.
Step a) in every one-phase crop fertilization required value can also be stored to control centre's calculator, control centre's calculator is according to every one-phase crop fertilization required value determining step b) before and/or step b) after the need of fertilising, when needs apply fertilizer, soil moisture content value X3 measured in real time by soil moisture content sensor, when being less than the soil moisture content value in this section of crop fertilization required value as X3, control centre's calculator controls to be connected to the magnetic valve watering irrigation pipe and opens, irrigate, until when X3 equals 80% of soil moisture content required value X needed for this long stage, control centre's calculator controls to be connected to the closed electromagnetic valve watering irrigation pipe, stop irrigating, when X3 is greater than the soil moisture content value in this stage crop fertilization required value, control centre's calculator controls to be connected to the closed electromagnetic valve watering irrigation pipe, does not irrigate.Therefore achieve the object to judging whether to need to chase after water in crop fertilization and fertilising process according to soil moisture content, further increase originally based on the multifunctionality of the farmland irrigation method of FEEDBACK CONTROL.
Can also comprise and utilize remote control computer and/or intelligent movable equipment to be connected to control centre's calculator to obtain soil moisture content measurement value sensor and the step of Long-distance Control control centre calculator by GPRS, 3G communication module.Remote control computer and intelligent movable equipment can obtain the soil moisture content state in farmland from control centre's calculator by GPRS, 3G module, simultaneously can Long-distance Control control centre calculator, realize magnetic valve open and close, to realize Long-distance Control field irrigation, change the object of field irrigation state.Further ensure that the controllability to farmland moisture condition.
The invention still further relates to a kind of farmland irrigating system based on FEEDBACK CONTROL, comprise Crop Information administration module, environmental information management module and intelligent irrigation module; Described Crop Information administration module comprises control centre's calculator, and it stores soil moisture content needed for soil moisture content required value, each vegetative stage needed for crop species, crop growth stage division, each vegetative stage time, each vegetative stage and requires that lower limit and each vegetative stage irrigate the parameter of limit; Described environmental information management module is comprised and to be arranged in farmland and by GPRS, 3G model calling in the soil moisture content sensor of control centre's calculator and the weather information data center being connected to control centre's calculator by network; Described intelligent irrigation module comprises being arranged at waters on irrigation pipe and by the magnetic valve of GPRS, 3G model calling in control centre's calculator.The invention still further relates to a kind of farmland irrigating system based on FEEDBACK CONTROL and can realize the above-mentioned farmland irrigation method based on FEEDBACK CONTROL.The design of three modules can expand the adaptability of irrigation system greatly, by collecting different plant growth information and environmental information, irrigate restrictive condition in conjunction with reasonable disposition, the effect in easy configuration and applicable most of farmland can be reached, greatly reduce cost of labor and use cost.And realizing embedded development by thing connection technology, technological expansion is strong.
Can also comprise by GPRS, 3G model calling in control centre's computer remote computer for controlling and by the intelligent movable equipment of GPRS, 3G model calling in control centre's calculator.Remote control computer and intelligent movable equipment can obtain the soil moisture content state in farmland from control centre's calculator by GPRS, 3G module, simultaneously can Long-distance Control control centre calculator, realize magnetic valve open and close, to realize Long-distance Control field irrigation, change the object of field irrigation state, save personnel cost, convenient and practical.
Claims (7)
1. based on a farmland irrigation method for FEEDBACK CONTROL, it is characterized in that: comprise the following steps:
a)soil moisture content needed for soil moisture content required value X, each vegetative stage needed for crop species, crop growth stage division, each vegetative stage time T, each vegetative stage is required that the parameter that lower limit Y and each vegetative stage irrigate limit Z is stored to control centre's calculator;
B) sow, control centre's calculator take sowing time as start time point recorded time value T1, time value T1 and each vegetative stage time of crop T compares by control centre's calculator, calculates when the vegetative stage residing for previous crop according to the division of crop growth stage;
C) control centre's calculator accepts meteorological information, and obtaining having following n day has moderate rain or heavy rain or following n day light rain or following n day without the meteorological information value of rain;
If d) there are moderate rain or heavy rain following n day, then control centre's calculator controls to be connected to the closed electromagnetic valve watering irrigation pipe, does not irrigate;
If e) there is light rain following n day, then soil moisture content value X1 measured in real time by soil moisture content sensor, when the soil moisture content value X1 measured in real time be less than soil moisture content needed for this vegetative stage require lower limit Y or be greater than soil moisture content needed for this vegetative stage require lower limit Y and be less than soil moisture content required value X needed for this vegetative stage time, control centre's calculator controls to be connected to the magnetic valve watering irrigation pipe and opens, irrigate, until when X1 is more than or equal to soil moisture content required value X needed for this vegetative stage and is less than this vegetative stage irrigation limit Z, control centre's calculator controls closed electromagnetic valve, stop irrigating, when the soil moisture content value X1 measured in real time is greater than soil moisture content required value X needed for this vegetative stage, control centre's calculator controls closed electromagnetic valve, does not irrigate,
If f) 3 days futures are without rain, then soil moisture content value X2 measured in real time by soil moisture content sensor, when the soil moisture content value X2 measured in real time be less than soil moisture content needed for this vegetative stage require lower limit Y or be greater than soil moisture content needed for this vegetative stage require lower limit Y and be less than soil moisture content required value X needed for this vegetative stage time, control centre's calculator controls to be connected to the magnetic valve watering irrigation pipe and opens, irrigate, until when X2 is more than or equal to soil moisture content required value X needed for this vegetative stage and is less than this vegetative stage irrigation limit Z, control centre's calculator controls closed electromagnetic valve, stop irrigating, when the soil moisture content value X2 measured in real time is greater than soil moisture content required value X needed for this vegetative stage, control centre's calculator controls closed electromagnetic valve, does not irrigate,
G) time value T1 and n sues for peace by control centre's calculator, obtain time value T2, time value T2 and each vegetative stage time of crop T compares by control centre's calculator, recalculates the vegetative stage drawn when residing for previous crop according to the division of crop growth stage;
H) repeated execution of steps c) to step g).
2. the farmland irrigation method based on FEEDBACK CONTROL according to claim 1, it is characterized in that: described step a) in every one-phase crop fertilization required value is stored to control centre's calculator, control centre's calculator is according to every one-phase crop fertilization required value determining step b) before and/or step b) after the need of fertilising, when needs apply fertilizer, soil moisture content value X3 measured in real time by soil moisture content sensor, when being less than the soil moisture content value in this section of crop fertilization required value as X3, control centre's calculator controls to be connected to the magnetic valve watering irrigation pipe and opens, irrigate, until when X3 equals 80% of soil moisture content required value X needed for this long stage, control centre's calculator controls to be connected to the closed electromagnetic valve watering irrigation pipe, stop irrigating, when X3 is greater than the soil moisture content value in this stage crop fertilization required value, control centre's calculator controls to be connected to the closed electromagnetic valve watering irrigation pipe, does not irrigate.
3. the farmland irrigation method based on FEEDBACK CONTROL according to claim 1, is characterized in that: described step c) in n value be 3.
4. the farmland irrigation method based on FEEDBACK CONTROL according to claim 1 and 2, is characterized in that: also comprise and utilize remote control computer and/or intelligent movable equipment to be connected to control centre's calculator to obtain soil moisture content measurement value sensor and the step of Long-distance Control control centre calculator by GPRS, 3G communication module.
5. based on a farmland irrigating system for FEEDBACK CONTROL, it is characterized in that: comprise Crop Information administration module, environmental information management module and intelligent irrigation module; Described Crop Information administration module comprises control centre's calculator, and it stores soil moisture content needed for soil moisture content required value, each vegetative stage needed for crop species, crop growth stage division, each vegetative stage time, each vegetative stage and requires that lower limit and each vegetative stage irrigate the parameter of limit; Described environmental information management module is comprised and to be arranged in farmland and by GPRS, 3G model calling in the soil moisture content sensor of control centre's calculator and the weather information data center being connected to control centre's calculator by network; Described intelligent irrigation module comprises being arranged at waters on irrigation pipe and by the magnetic valve of GPRS, 3G model calling in control centre's calculator.
6. the farmland irrigating system based on FEEDBACK CONTROL according to claim 4, is characterized in that: also comprise by GPRS, 3G model calling in control centre's computer remote computer for controlling.
7. the farmland irrigating system based on FEEDBACK CONTROL according to claim 4 or 5, is characterized in that: also comprise by the intelligent movable equipment of GPRS, 3G model calling in control centre's calculator.
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| CN111158326A (en) * | 2020-01-03 | 2020-05-15 | 重庆特斯联智慧科技股份有限公司 | Intelligent water spray control method and system based on big data time-varying analysis |
| CN111158326B (en) * | 2020-01-03 | 2022-11-25 | 重庆特斯联智慧科技股份有限公司 | Intelligent water spray control method and system based on big data time-varying analysis |
| CN112598850A (en) * | 2020-12-25 | 2021-04-02 | 河南威盛润禾智能科技有限公司 | Irrigation area intelligent NFC charge control flow measurement method and device based on block chain |
| CN112868354A (en) * | 2021-01-15 | 2021-06-01 | 广州市粤诚农业科技有限公司 | Intelligent system for fertilization and irrigation |
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