CN104719100A - Fuzzy control irrigation method - Google Patents
Fuzzy control irrigation method Download PDFInfo
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- CN104719100A CN104719100A CN201410671526.2A CN201410671526A CN104719100A CN 104719100 A CN104719100 A CN 104719100A CN 201410671526 A CN201410671526 A CN 201410671526A CN 104719100 A CN104719100 A CN 104719100A
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- fuzzy
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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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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Environmental Sciences (AREA)
- Feedback Control In General (AREA)
Abstract
The invention discloses a fuzzy control irrigation method, and belongs to the technical field of irrigation control methods. According to the fuzzy control irrigation method, a temperature sensor and a humidity sensor are used for collecting the irrigation temperature and humidity, a fuzzy control theory is used for calculating the needed irrigation volume, the operating time and the operating rate of an irrigation executing mechanism are controlled so that automatic irrigation can be achieved, and thus the fuzzy control irrigation method is very intelligent.
Description
Technical field
The present invention relates to a kind of fuzzy control irrigation method, belong to control method of irrigation technical field.
Background technology
In the process of growth of crops, in order to ensure the needs of crop growthing development, need to irrigate crops.And when irrigating Large Area of Crops, need to drop into a large amount of human and material resources.
Application number is 201310191289.5, the applying date be on May 21st, 2013 application discloses a kind of irrigation system, comprise: engine, switch, power supply, water pump and shower nozzle, described irrigation system also comprises controller, described switch is electrically connected with described controller, described power supply and described engine simultaneously, described water pump is connected with described engine and described power electric, and connects described shower nozzle.In one of them embodiment, described controller gives described switch for timed sending enabling signal and end signal; The described enabling signal that described switch sends for responding described controller, is communicated with described power supply and described engine, and responds described end signal, disconnect the connection of described power supply and described engine.The time that only need set needs thus just automatically to plant irrigation, can save manpower financial capacity.
Application number is 201410337638.4, the applying date be on July 16th, 2014 application discloses a kind of Intelligent irrigation system, comprise sensing unit, push-button unit, clock unit, display unit, electric-motor drive unit, buzzing Tip element and control unit.Wherein, sensing unit can perception environmental information be transferred to control unit; Push-button unit can be arranged irrigation duration and condition, and configuration information is passed to control unit; Clock unit can produce highly accurate temporal information for control unit; Display unit can displaying time information and environmental information; Electric-motor drive unit can after receiving control signal starter motor, drive irrigation installation work, and pointed out by buzzing Tip element; Control unit receives and processing environment information, temporal information, configuration information, and controls electric-motor drive unit, display unit and the work of buzzing Tip element.Intelligent irrigation system of the present invention can gather environmental information and automatically-controlled irrigation equipment work, and system architecture is simple, easy to use.
Some current irrigation systems determine that the passive water-feeding type of irrigation time and irrigation volume is irrigated mostly or artificially, its irrigation time and duty might not be reasonable to nursery, and therefore implementing essence amount control irrigation according to crop water shortage information is one of important channel of improving the availability of water and the production efficiency of water.
Summary of the invention
In order to solve the problem, the present invention proposes a kind of fuzzy control irrigation method, adopt fuzzy control theory, automatically according to the work of the actual conditions control irrigation executing agency in farmland, ensure that accuracy and the promptness of irrigation, avoid artificial careless omission to delay crop growth, effectively save manpower.
The present invention adopts following technical scheme for solving its technical problem:
A kind of fuzzy control irrigation method, comprises the steps:
(1) detected the temperature of irrigated area by temperature sensor, compare output temperature deviation signal with the temperature value preset, detected the humidity of irrigated area by humidity sensor, compare with the humidity value preset and export humidity deviation signal;
(2) temperature error signal is obtained rate of temperature change signal through differential calculation, humidity deviation signal is obtained humidity rate of change signal through differential calculation;
(3) the rate of temperature change signal described in and humidity rate of change signal jointly through amplification after after input fuzzy controller;
(4) fuzzy controller described in carries out obfuscation to input signal, draws fuzzy value according to fuzzy rule;
(5) fuzzy controller described in carries out defuzzification according to the fuzzy value drawn to output signal, obtains required irrigation volume;
(6) output of fuzzy controller is to irrigation executing agency input control signal, the running time of control irrigation executing agency and operating rate.
As a preferred technical solution of the present invention: input signal described in step (4) is the error e that jointly produces after amplifier of rate of temperature change signal and humidity rate of change signal and error rate c.
As a preferred technical solution of the present invention: export controlled quentity controlled variable q after step (5) carries out defuzzification to output signal, be required irrigation volume.
As a preferred technical solution of the present invention: described humidity sensor and temperature sensor are Hall element.
As a preferred technical solution of the present invention: described irrigation rig is root filling device.
As a preferred technical solution of the present invention: described fuzzy controller adopts Programmable Logic Controller.
A kind of fuzzy control irrigation method of the present invention adopts above technical scheme compared with prior art, has following technique effect:
(1) the present invention adopts fuzzy control theory, does not rely on the mathematical models of controlled device.Utilize the relation that control law comes between descriptive system variable.Descriptive system is carried out by the fuzzy variable of languages type without numerical value.Simplify the complexity of system, be specially adapted to non-linear, time become, the control of delayed, the incomplete system of model.
(2)this invention removes the fluctuation problem caused in Traditional control process, soil moisture in irrigated area is stabilized in a concrete scope, ensure that the healthy growth of crops.
(3) the present invention adopts humidity sensor and temperature sensor to detect soil moisture and the temperature at each terminal node place in real time, automatically according to the work of the actual conditions control irrigation executing agency in farmland, solve in traditional irrigation mode and irrigate and cannot automatically carry out, need the problem of manual operation irrigation installation.Ensure that accuracy and the promptness of irrigation, avoid artificial careless omission to delay crop growth, effectively saved manpower.
(4) irrigation rig of the present invention adopts irrigation rig, and avoid the ground of pouring water and lose through stream, evaporation from land surface and underground leakage, both sharp root water uptakes, sharp root system is breathed freely again, is conducive to the growth of crops.
(5) the present invention adopts fuzzy reasoning, overcome the water demand of crop that calculates in traditional irrigation model and the larger defect of crop actual water requirement deviation, every this inference system at regular intervals calculates the water demand of crop, and make corresponding irrigation practice, a large amount of irrigation water can not only be saved like this, and can pour water in appropriate amount, be conducive to the growth of crop, thus improve the output of crop.
Embodiment
Below the invention is described in further details.
A kind of fuzzy control irrigation method, comprises the steps:
(1) detected the temperature of irrigated area by temperature sensor, compare output temperature deviation signal with the temperature value preset, detected the humidity of irrigated area by humidity sensor, compare with the humidity value preset and export humidity deviation signal;
(2) temperature error signal is obtained rate of temperature change signal through differential calculation, humidity deviation signal is obtained humidity rate of change signal through differential calculation;
(3) the rate of temperature change signal described in and humidity rate of change signal jointly through amplification after after input fuzzy controller;
(4) fuzzy controller described in carries out obfuscation to input signal, draws fuzzy value according to fuzzy rule;
(5) fuzzy controller described in carries out defuzzification according to the fuzzy value drawn to output signal, obtains required irrigation volume;
(6) output of fuzzy controller is to irrigation executing agency input control signal, the running time of control irrigation executing agency and operating rate.
As a preferred technical solution of the present invention: input signal described in step (4) is the error e that jointly produces after amplifier of rate of temperature change signal and humidity rate of change signal and error rate c.
As a preferred technical solution of the present invention: export controlled quentity controlled variable q after step (5) carries out defuzzification to output signal, be required irrigation volume.
As a preferred technical solution of the present invention: described humidity sensor and temperature sensor are Hall element.
As a preferred technical solution of the present invention: described irrigation rig is root filling device.
As a preferred technical solution of the present invention: described fuzzy controller adopts Programmable Logic Controller.
The present invention adopts fuzzy control theory, does not rely on the mathematical models of controlled device.Utilize the relation that control law comes between descriptive system variable.Descriptive system is carried out by the fuzzy variable of languages type without numerical value.Simplify the complexity of system, be specially adapted to non-linear, time become, the control of delayed, the incomplete system of model.Fuzzy controller is a speech path controller, and convenient operation librarian use natural language carries out human-computer dialogue.Fuzzy controller is the comparatively ideal gamma controller of a kind of easy control, grasp, has preferably robustness, adaptability, robustness (Robustness) and preferably fault-tolerance (Fault Tolerance).
This invention removes the fluctuation problem caused in Traditional control process, soil moisture in irrigated area is stabilized in a concrete scope, ensure that the healthy growth of crops.
Temperature sensor of the present invention and humidity sensor adopt Hall element, and Hall element is divided into line style Hall element and Hall switch sensor two kinds.And Hall element of the present invention is lienar for Hall element, be made up of Hall element, linear amplifier and emitter follower, it exports analog quantity.Linear hall sensor can be divided into open loop type and closed loop again.Closed loop Hall element is also known as Zero flux Hall element.Linear hall sensor is mainly used in ac and dc current and voltage measurement.Adopt the temperature sensor of Hall element and humidity sensor detected temperatures and humidity, precision is high, the linearity good.
The present invention adopts humidity sensor and temperature sensor to detect soil moisture and the temperature at each terminal node place in real time, automatically irrigation work is started in time according to the actual conditions in farmland, solve in traditional irrigation mode and irrigate and cannot automatically carry out, need the problem of manual operation irrigation installation.Ensure that accuracy and the promptness of irrigation, avoid artificial careless omission to delay crop growth, effectively saved manpower.The present invention adopts fuzzy reasoning, overcomes the water demand of crop that calculates in traditional irrigation model and the larger defect of crop actual water requirement deviation.This system applies in irrigation control, and often this inference system calculates the water demand of crop at regular intervals, and makes corresponding irrigation practice, a large amount of irrigation water can not only be saved like this, and can pour water in appropriate amount, be conducive to the growth of crop, thus improve the output of crop.
Humidity sensor in the present invention, temperature sensor and irrigation executing agency are battery-powered by 7.2V/800Ma/h rechargeable Ni-H 2, the supplementary energy of this battery pack converts electric energy by solar panel to by solar energy simultaneously, then is provided by charging control circuit.The power acquisition of the fuzzy controller in the present invention be input 24AC out-put supply adapter by 220/110VAC to power, it exports and carries out by connected rectifier filter the 5V voltage stabilizing that rectification and filtering formed and export to fuzzy controller.
During fuzzy controller employing Programmable Logic Controller of the present invention, reliability is high, and antijamming capability is strong.Programmable Logic Controller is a kind of electronic system of electronics of digital operation, it adopts the memory that can program, be used for perform stored logic computing and sequential control, regularly, the instruction of the operation such as counting and arithmetical operation, and by input (I) that is digital or that simulate and output (O) interface, control various types of plant equipment or production process.
Irrigation rig has sprinkling irrigation system, drip irrigation system and low pressure pipe irrigation system etc., primarily of stem water intaking pressurization facility, water transfer pipe network and irrigate discharging device three part composition, usually pipe irrigation system is divided into fixed, semi-fixed type and portable three types by its movable degree.Irrigation rig of the present invention adopts root filling device, and avoid the ground of pouring water and lose through stream, evaporation from land surface and underground leakage, both sharp root water uptakes, sharp root system is breathed freely again, is conducive to the growth of crops.
Claims (6)
1. a fuzzy control irrigation method, is characterized in that, comprises the steps:
(1) detected the temperature of irrigated area by temperature sensor, compare output temperature deviation signal with the temperature value preset, detected the humidity of irrigated area by humidity sensor, compare with the humidity value preset and export humidity deviation signal;
(2) temperature error signal is obtained rate of temperature change signal through differential calculation, humidity deviation signal is obtained humidity rate of change signal through differential calculation;
(3) after rate of temperature change signal and humidity rate of change signal are jointly after amplifying, fuzzy controller is inputted;
(4) adopt fuzzy controller to carry out obfuscation to input signal, draw fuzzy value according to fuzzy rule;
(5) fuzzy controller carries out defuzzification according to the fuzzy value drawn to output signal, obtains required irrigation volume;
(6) output of fuzzy controller is to irrigation executing agency input control signal, the running time of control irrigation executing agency and operating rate.
2. a kind of fuzzy control irrigation method according to claim 1, is characterized in that, input signal described in step (4) is the error e that jointly produces after amplifier of rate of temperature change signal and humidity rate of change signal and error rate c.
3. a kind of fuzzy control irrigation method according to claim 1, is characterized in that exporting controlled quentity controlled variable q after step (5) carries out defuzzification to output signal, is required irrigation volume.
4. a kind of fuzzy control irrigation method according to claim 1, is characterized in that described humidity sensor and temperature sensor are Hall element.
5. a kind of fuzzy control irrigation method according to claim 1, is characterized in that described irrigation executing agency is root filling device.
6. a kind of fuzzy control irrigation method according to claim 1, is characterized in that described fuzzy controller adopts Programmable Logic Controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410671526.2A CN104719100A (en) | 2014-11-21 | 2014-11-21 | Fuzzy control irrigation method |
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| CN201410671526.2A CN104719100A (en) | 2014-11-21 | 2014-11-21 | Fuzzy control irrigation method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353656A (en) * | 2015-11-05 | 2016-02-24 | 宁波熵联信息技术有限公司 | Intelligent greenhouse irrigation control device based on fuzzy inference |
| CN106234169A (en) * | 2016-08-30 | 2016-12-21 | 无锡信大气象传感网科技有限公司 | A kind of self-service farmland irrigation method |
| CN106937584A (en) * | 2017-03-17 | 2017-07-11 | 湖南农业大学 | One kind equalization soil moisturizing control method and its system |
| CN108628374A (en) * | 2018-06-29 | 2018-10-09 | 王倩 | A kind of wheat growth intelligent control method and system |
| CN110036881A (en) * | 2019-03-29 | 2019-07-23 | 河北建涛科技有限公司 | A kind of wisdom agricultural irrigation systems and its control method |
| CN112753542A (en) * | 2021-01-07 | 2021-05-07 | 南昌易融邦企业服务有限公司 | Automatic plant watering system based on Internet of things |
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| CN101881979A (en) * | 2010-07-12 | 2010-11-10 | 郭栋才 | Fuzzy control system and method for humidity of airliner cabin |
| CN101893851A (en) * | 2010-07-12 | 2010-11-24 | 郭栋才 | Indoor temperature fuzzy control system and method thereof |
| CN103226348A (en) * | 2013-03-29 | 2013-07-31 | 湖北亿瑞生物科技有限公司 | Centralized remote environment control system and method for edible mushroom houses |
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- 2014-11-21 CN CN201410671526.2A patent/CN104719100A/en not_active Withdrawn
Patent Citations (5)
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| CN1667569A (en) * | 2005-04-18 | 2005-09-14 | 天津大学 | Embedded intelligent environmental chamber controller |
| CN101526260A (en) * | 2009-04-20 | 2009-09-09 | 广东志高空调有限公司 | Variable-frequency air-conditioner control method and control device thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353656A (en) * | 2015-11-05 | 2016-02-24 | 宁波熵联信息技术有限公司 | Intelligent greenhouse irrigation control device based on fuzzy inference |
| CN106234169A (en) * | 2016-08-30 | 2016-12-21 | 无锡信大气象传感网科技有限公司 | A kind of self-service farmland irrigation method |
| CN106937584A (en) * | 2017-03-17 | 2017-07-11 | 湖南农业大学 | One kind equalization soil moisturizing control method and its system |
| CN108628374A (en) * | 2018-06-29 | 2018-10-09 | 王倩 | A kind of wheat growth intelligent control method and system |
| CN110036881A (en) * | 2019-03-29 | 2019-07-23 | 河北建涛科技有限公司 | A kind of wisdom agricultural irrigation systems and its control method |
| CN112753542A (en) * | 2021-01-07 | 2021-05-07 | 南昌易融邦企业服务有限公司 | Automatic plant watering system based on Internet of things |
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Application publication date: 20150624 |