236 results about "Irrigation district" patented technology

The present invention provides systems and methods in which a microprocessor (220) is programmed to calculate an accumulated watering need for an irrigation zone of station (400)and control irrigation to the zone or station (400) using an automatically varied cycle amount that falls between a user controllable maximum threshold and a user controllable minimum threshold. The cycle amount is preferably at least partly derived from ETo data. The minimum threshold may vary during a period of 12 consecutive months, may vary as a function of time of year, as a function of crop maturity or as a function of any other suitable factor where it would be advantageous to set a minimum threshold. The cycle amount may equal the accumulated ETo value(s) or may equal the maximum threshold value. Furthermore, the microprocessor (220) may be programmed to control the irrigation to the zone or station (400) using an automatically varied day schedule.

The invention discloses a water management informatization structure system of an irrigation district, which comprises irrigation district identification, information monitoring, information transmission, building control and a scheduling decision module. The irrigation district identification is used for identifying an irrigation district canal system, buildings, management mechanisms and water users; the information monitoring is used for acquiring and outputting irrigation district information; the information transmission is used for transmitting the information to the scheduling decision module in time and transmits water demand information to the building control through the scheduling decision module; the building control is used for dynamically scheduling gates and pumping stations of the irrigation district; and the scheduling decision module is used for providing a decision basis and a decision plan for an irrigation district administrator and controlling the water consumption of the irrigation district. According to the actual condition of the water management informatization of the irrigation district, the invention constructs the water management informatization structure system of the irrigation district, which conforms to reality by a method of the attribute classification of information technology. The water management informatization structure system of the irrigation district has the advantages of no repetition and intersection, easy understanding and prominent water management informatization of the irrigation district.

The invention discloses an intelligent water-saving field irrigation system of an irrigation district. A data acquisition module comprises a soil moisture acquisition module and a weather information acquisition module, wherein the soil moisture acquisition module is responsible for acquiring information of moisture, temperature and a water level in soil; the weather information acquisition module is responsible for acquiring information of air humiture, wind speed, wind direction, air pressure and rainfall; a transmission base station is used for transmitting the information of the moisture, temperature and water level in the soil acquired by the soil moisture acquisition module in the data acquisition module; an intelligent controller generates a channel gate opening and closing control signal according to the information of the moisture, temperature and water level in the soil and the weather information; an execution module controls a gate motor to operate according to the channel gate opening and closing control signal; a remote monitoring center receives information of water consumption, water rate, water flow and soil moisture of field irrigation and weather information output by the intelligent controller to switch automatic and manual control of the gate; the gate can be directly controlled manually to operate; and a mobile phone monitoring terminal monitors the soil moisture of the field irrigation and can directly control the gate to operate.

The invention provides a method for forecasting the crop yield of per unit area in an irrigation district. Respective forecasting models of economic yield and environmental yield are respectively built, and then a combined forecasting model of crop field is obtained through the weighted sum of weight coefficients. The method weakens the respective defects of different models to enable the two models to mutually and self-adaptively complement each other, and also weakens the system analysis limitations brought by unilaterally forecasting the crop yield according to the socio-economic factors or natural environment factors simultaneously.

The invention discloses anti-seepage heat insulating rice husk concrete and a preparation method thereof, and the prepared anti-seepage heat insulating rice husk concrete comprises the following raw materials in percentage by mass: 0.6 to 4 percent of rice husk or rice husk powder, 2 to 6 percent of fly ash, 15 to 33 percent of cement, 14 to 27 percent of sand, 26 to 48 percent of stone, 0.15 to 1.2 percent of rice husk coupling agent, 0.11 to 0.29 percent of water reducing agent and the balance of water, and the total mass percentage of the raw materials is 100 percent. The anti-seepage heat insulating rice husk concrete is mainly applied to a concrete lining cannel in a northern irrigation district to prevent frost damage, and tests show the performance of the concrete meets the index requirements of 'Technical Code of Channel Anti-seepage Engineering' on the lining concrete, particularly the heat transfer coefficient of the concrete added with rice husk is only 14 to 20 percent of that of common concrete, and the anti-seepage grade can reach above W4 (the permeability coefficient is less than 0.783*10-8cm/s). Simultaneously, the anti-seepage heat insulating rice husk concrete is applied to non-load-bearing structures or hollow blocks and wall materials in building engineering, is an inexpensive heat insulating material. In addition, the invention opens up a new way for the use of rice husk, and can reduce the harm of combustion to the environment.

An anti-rice heavy metal pollution method comprises the following steps: adding lime and anti-rice heavy metal pollution agricultural capital goods into irrigation water, thus allowing the water to provide irrigation and anti-rice heavy metal pollution effects. The water is irrigated into rice field so as to uniformly and continuously control the rice heavy metal pollution. Compared with the prior art, the novel method can save an operation step in which people or machine need to enter the filed for applying lime; the novel method is high in control effect, low in cost, simple and reliable, suitable for farmer single application, and can be used for large scale machinery application in irrigation areas.

The invention relates to a determination method of a water distribution scheme in an irrigation area. The method is characterized in that by determining the information of the irrigation area and crops, a crop irrigation mode is determined, the irrigation information in the irrigation mode is acquired, and a decision objective of a stage water distribution scheme in the irrigation area is determined; by constructing a linear planning model, an optimal solution of crop planting area in the irrigation mode is obtained; by exchanging the optimal solution with the decision maker, an adjustment scheme is acquired for figuring out a decision index matrix, and the adjustment scheme is sorted by calculations such as linear scale transformation, linear weighting, and the like; and finally, the stage water distribution scheme and a shift water distribution scheme in the irrigation area are determined. The determination method adopts advanced irrigating theories and technologies, perfects the decision process of irrigation water management, and improves the efficiency of the irrigation water management.

The invention discloses a cloud based irrigation district water-saving irrigation decision-making support system. The system comprises a cloud server, wireless data transmission modules, single chip microcomputers, sensors and a gate, and the cloud server comprises a database and a webpage. Decision-making steps of the system include: setting up the database, carrying out multi-point measurement of paddy field moisture and water level of a district to be measured, and storing average data in the database; automatically capturing data of an official weather forecast website, storing the data in the database, and using temperature data for estimating water requirement of crops; according to measured data and a corresponding water balance model, computing to judge whether irrigation is needed or not, and if so, determining irrigation amount and irrigation time; and enabling the webpage to be capable of serving as a data display terminal and a lower computer control terminal. The irrigation district water-saving irrigation decision support system is set up on the basis of the cloud server, data is transmitted through a mobile network, and accordingly data transmission range can be enlarged, and irrigation district informatization management level is improved.

An informational energy-saving gate automatic control system comprises a power supply system, a wireless transmission system and a supervision center, wherein a solar power supply system is used for providing a power supply to important water gate monitoring points and wireless transmission terminals in an irrigation district, contact is get through a GPRS (General Packet Radio Service) RTU (Remote Terminal Unit) wireless remote collection monitor terminal and the supervision center, and quick collection, transmission, processing and control are performed on data information of the water gate monitoring points. The center of the monitoring system inquiries data of all measuring points after receiving gate opening degree information of all gates, remote control is performed on all gates according to the requirements of users, a control box in a lower computer sends out control signals to control the gates to open to a certain opening degree through calculating after receiving control information, and solar energy power supply and informational energy-saving control process of GPRS wireless transmission technology can be achieved.

The invention discloses an irrigation district agricultural irrigation water demand decision-making method and system. The decision-making method comprises the following steps that firstly, the soil moisture content, the regional crop planting structure, the crop daily water consumption and the like of an irrigation area are calculated based on the 3S technology, and a soil moisture content prediction model based on soil water balance is generated; then a large-scale regional irrigation water demand prediction model is obtained; an actual irrigation area monitoring model is established based on vertical drought index difference; an irrigation area water resource optimal configuration model is constructed according to the soil moisture content prediction model, the regional irrigation waterdemand prediction model and the actual irrigation approximate area monitoring model; and finally, a one-key irrigation water decision support system is developed for the irrigation district. According to the remote sensing data, weather conditions, soil types and the like of different regions, automatic interpretation of irrigation district planting structures, irrigation district drought information monitoring and early warning, actual irrigation district monitoring, irrigation water utilization efficiency, irrigation district agricultural water demand and the like can be realized.

The invention relates to the technical field of sampling equipment and particularly relates to a water pumping device for pumping farmland leaching water in a semi-arid irrigated area in the northwest. The water pumping device comprises a pumping pipe, the bottom of the pumping pipe is connected to a drill bit, the top of the pumping pipe is provided with a motor, the drill bit has a hollow structure, the drill bit is uniformly provided with four ground drilling blades, the drill bit between the each two adjacent ground drilling blades is provided with a water pumping hole, a primary filtering screen is arranged in each one of the water pumping holes, a water feeding pipe is connected to each one of the water pumping holes, the water feeding pipes are arranged in the drill bit and pass through the top of the drill bit, a water blocking sheet is arranged in each one of the water feeding pipes, the top of the drill bit is provided with a high efficiency filter screen, the bottom of the pumping pipe is provided with a circular groove, a circular airbag is arranged in the circular groove, the circular airbag is provided with an air charging device and the lower part in the pumping pipe is provided with a piston body. The water pumping device can take water samples at different depths and effectively prevent the influence caused by air ingredients and soil ingredients on the nitrogen content detection.

The invention discloses a B/S structure based comprehensive management system and method of water distribution in an irrigation district. The system comprises a data acquisition terminal, a network server, a client and a wireless network; the system integrates the functions of water regime data collection and detection in the irrigation district, real-time irrigation forecasting and water allocation decision in the irrigation district, and water regime information management and analysis in the irrigation district and so on. The system has the adaptability and expansibility of the B/S structure, the maintenance is convenient and the cost is low, and meanwhile, network meteorological data can be used conveniently, the real-time communication ability of the data is focused, so that the system overcomes the limitation of space and geography, and the access is convenient. A new website development technology is adopted for the development of a system browser side, the page is simple, the interaction is friendly, and the threshold for professional skills of managers is lowered.

The invention discloses an anti-blockage system and method for irrigating biogas slurry, belonging to the field of biogas slurry irrigation. The system is characterized by comprising a biogas slurry supply branch and a clear water supply branch, thus realizing mixed irrigation and independent irrigation of biogas slurry and clear water; a soil moisture detection device and a controller are adopted to respectively control the supply quantities and mixing ratio of biogas slurry and clear water aiming at the actual moisture and fertilizer demands of the crops, thus realizing scientific and automatic irrigation of the crops; and in addition, clear water supply is not finished after finishing irrigation but clear water is adopted to wash the pipe networks in the biogas slurry irrigation districts to remove the residual organic components of the biogas slurry in the pipe networks in the biogas slurry irrigation districts, thus avoiding that microorganisms in the biogas slurry are reproduced and grow in the pipe networks in the biogas slurry irrigation districts and block the pipe networks in the biogas slurry irrigation districts.

The invention discloses an integrated water resource management system in an irrigation area. The management system comprises an early warning module, a data display module, a water transfer management module, a gate group dispatching module, a water regime statistics module, a project patrol module and a drought prevention and flood fighting module; The data display module is based on the GIS platform, integrates the gate operation monitoring data, the pump station operation monitoring data, the alarm information, the video monitoring display and the dam safety monitoring data, and displays the same data through the GIS platform. The data display module comprises a GIS map module, a river basin GIS map provided by a regional water conservancy bureau is used, and on the basis of this, mainhydraulic structures, river courses, channels, survey points and irrigation districts are marked; A layered and hierarchical overlay display map layer in that data display module. The invention realizes the comprehensive management of water resources dispatching, decision-making command, water use management, video monitoring, engineering management, dam safety, flood control and drought resistance in irrigation districts.

The invention discloses an artificial intelligence control method and system for soil moisture content, and the method comprises the steps: carrying out the regional division and separated control according to the type and terrain of vegetation; pre-judging the water content of the deep soil in the next unit time period by combining the actual water consumption rate of the deep soil in the previous unit time period, and if the pre-judgment result shows that the water content of the deep soil in the next unit time period is lower than the lower limit value of the suitable soil water content ofvegetation in the growth period; if yes, the irrigation area is irrigated in combination with the rainfall of the next unit time period in the weather prediction information of the weather predictionmodule, so that it is guaranteed that the soil deep water content in the irrigation area is within the suitable range of the soil water content of vegetation in the growth period; in this way, artificial intelligence control over the deep water content of the soil in the irrigation area is achieved, and the control precision is higher. The invention further provides an artificial intelligence control system for the soil moisture content.

The invention discloses a water-fertilizer integrated intelligent accurate control system and a control method thereof, and relates to water-fertilizer control systems in cross application of related information technology, agricultural irrigation and scientific fertilizing technology. The system consists of a monitor (100), a serial conversion module (200), a lower computer (300), an actuating mechanism (400) and a rotation irrigation district (500), which are connected in turn. In the method, water-fertilizer integrated accurate decision control software is mainly operated; the monitor sends a control command through the serial conversion module; the lower computer receives the control command through a shield cable and converts the control command into a logic control sequence; and the actuating mechanism acts according to the logic control sequence in turn to complete watering and fertilization of the rotation irrigation district. The invention is low in cost and high in expansibility and practicability, reflects the development trend of 'accurate irrigation and accurate fertilization', and has practical value for relieving water resource contradiction of China, reducing agricultural non-point pollution and ensuring food security of China.

The invention belongs to the technical field of irrigation forecasting. The invention discloses a real-time irrigation forecasting system based on regional soil moisture monitoring and remote sensingdata. The real-time irrigation forecasting system comprises an irrigation area monitoring module, a crop image acquisition module, an environment data acquisition module, a central control module, a soil moisture prediction module, an irrigation area identification module, an irrigation prediction module, an actual water consumption module, a watering module, a water level depth measurement module, an alarm module, a wireless communication module, a data storage module, a data management module, a terminal module, a power supply module and a display module. According to the real-time irrigation forecasting system, the prediction precision can be improved and the generalization ability can be ensured through the soil moisture prediction module, so that large-scale deployment and expansion are facilitated, and better expandability and transportability are achieved; the irrigation area recognition module meets the requirement for extracting irrigation information of small plots, so that the precision of an irrigation area monitoring result is improved; and the real-time irrigation forecasting system can be widely applied to remote sensing identification and extraction of irrigation areas with high spatial resolution.

The invention discloses a method for adopting an eluting solution to restore sewage irrigation area soil heavy metal. The eluting solution is composed of nitrilotriacetic acid which is a chelating agent and sodium dodecyl sulfate which is a surfactant, and mole ratio of nitrilotriacetic acid and sodium dodecyl sulfate is 5-15mmol kg-1:1mmol kg-1. On the basis of an optimal experiment, restored soil is eluted by using simulated acid rain, the objective of eluting restoration of lawn planting system sewage irrigation area soil heavy metal pollution is achieved, and the sewage irrigation area soil heavy metal after reaching the standard can continue to be applied to agricultural production.

The invention provides an irrigated area dry land sheetflow type water drainage, regulation and storage purification wet land built system. The system structurally comprises a dry land, gabion ridges, plant isolation belts and a regulation and storage purification pond wet land. In a water drainage period, water in the land sequentially flows through the gabion ridges, the plant isolation belts and the regulation and storage purification pond wet land in a sheetflow mode, and nitrogen and phosphorus nutrients, pesticide residue harmful matter in the water can be effectively intercepted and purified; in a rainfall period, the regulation and storage purification pond wet land can effectively regulate overland rainwater runoff in an irrigated area, and the flood pressure of a reception river is reduced; in an irrigation period, water in the regulation and storage purification pond wet land can be used for reuse. The irrigated area dry land sheetflow type water drainage, regulation and storage purification wet land built system has the advantages that non-point source pollution caused by irrigated area dry land sheetflow type water drainage can be reduced, farmland rainwater overland runoff and flood resources further can be effectively regulated, the construction process is simplified, popularization is facilitated, agricultural production can be remarkably improved, the ecological environment is protected, and sustainable development of the agriculture in an ecological irrigation district is achieved.

The invention discloses a water-saving and pollution-reducing method for irrigation and drainage coupled water circulation use in a flat ecological irrigation district, wherein an irrigation district drainage period and an irrigation district water need period are comprised; during the irrigation district drainage period, field drained water enters a cyclically-adjusting wetland reservoir through a drainage ditch, sediments, pesticides and heavy-metal harmful substances are intercepted and purified through a submerged plant zone and an ecological wetland purification island system, and nitrogen and phosphorus nutrient substances are treated, thus reducing the harms of drainage to the water bodies of rivers and lakes; during the irrigation district water need period, water bodies in the cyclically-adjusting wetland reservoir are extracted by a water extraction pump and distributed to irrigation district farmlands, thus increasing the utilization efficiency of water resources, wherein the residual nitrogen and phosphorus nutrient substances can also be needed by the growth parts of crops. The water-saving and pollution-reducing method disclosed by the invention has the advantages of coupling irrigation and drainage processes in the ecological irrigation district, reducing the influences caused by the drainage of farmland surface source pollutants on rivers and lakes, increasing the utilization efficiency of water resources and chemical fertilizers, and realizing the sustainable development of the ecological water-saving irrigation district agriculture.

The invention relates to a multi-domain adjustable pressure regulator and an installation method thereof. The multi-domain adjustable pressure regulator comprises a shell consisting of an upstream part, a downstream part and a midstream part, an inlet basket plug, a T-shaped pressure adjusting assembly and a spring. The midstream part comprises an upper part, a middle part, a lower part and two fixing rings; the middle part is connected with the upper part and the lower part through threads with opposite directions of turning, and is located by using the two fixing rings; the midstream part is fixedly connected with quick connectors which are arranged opposite to the upstream part and the downstream part; the end surface of the front part of the inlet basket plug is sealed; water inlet holes are arranged surrounding the inlet basket plug; the back part of the inlet basket plug is of a disc shape, and is sealed in a groove formed between the upstream part and the midstream part of the shell; the T-shaped pressure adjusting assembly comprises a central cylinder; the downstream of the central cylinder is connected with a sealed locating ring and the fixing rings through threads; one side of the upstream of the sealed locating ring is provided with a cylinder provided with a fixed spring; and one side of the downstream of the sealed locating ring is sealed and connected in the downstream part of the shell. The invention is applicable to irrigation systems in irregular irrigation districts and irrigation districts with larger relieves in particular.

The present invention relates to a method and system for optimal allocation of water resources in an irrigation area, comprising: receiving an irrigation area selected by a user to be optimally configured; loading and setting basic data of the irrigation area; adjusting a target model according to an optimization target to generate an optimization model; The data is input into the optimization model, and the water resource configuration data of the irrigation area is output; wherein, the basic data includes: crop parameters, partition parameters, and water resource parameters. The method and system for optimal allocation of water resources in irrigation districts provided by the embodiments of the present invention can be applied to different optimization objectives by adjusting the target model, and the water resource allocation scheme of irrigation districts can be obtained according to the basic data of irrigation districts, which can be directly applied to different irrigation districts. It reduces unnecessary repetitive work in the development process of similar software, conducts reasonable irrigation according to the characteristics of different irrigation areas, reduces the waste of water resources, and promotes the growth of crops.

The invention relates to an analysis method for heavy metal accumulation and morphological characteristic analysis of a main heavy metal pollution source of rice field profile soil. The method comprises the following steps: (1) sample collection; (2) sample pretreatment; (3) sample determination and analysis; (4) a heavy metal pollution evaluation method; (5) data statistical analysis. Accumulatedcharacteristics and form distribution rules of six heavy metal elements (Cd, Pb, Cu, Zn, Cr and Ni) in profile soil of rice fields near a normal fertilization (organic fertilizers such as pig manure)area, a pig farm biogas slurry irrigation area, a lead-zinc mining area, an industrial area and the like without obvious pollution sources in a long plant pool area in Hunan are taken as research objects, the analysis method effectively overcomes the defects in the prior art, evaluates the pollution risk of the rice field soil in the region by adopting a single pollution index and a comprehensivepollution index, and analyzes a main possible pollution source in the region with the unknown pollution source by utilizing the morphological distribution characteristics of the soil heavy metals inthe region with the known pollution source.

The invention discloses a remote automatically-controlled water saving system for gates in an irrigation district, and belongs to the technical field of modern and automatic management in irrigation districts. The remote automatically-controlled water saving system comprises a monitoring centre, a gate in-situ control unit, a canal system, the gates and water measuring flumes, wherein the monitoring centre comprises a main controller and a display unit, and the main controller comprises a water level flow monitoring unit, a fault analysis unit, a storage unit, an alarm and an optimized water distribution unit; the gate in-situ control unit comprises a programmable controller, a gate opening-closing transmission mechanism, and water level sensors, the canal system comprises two or more canals, and one gate is arranged at a water inlet of each canal; and one water measuring flume is arranged in each canal, and a water level measuring well provided with one water level sensor is arranged at each canal bank. According to the remote automatically-controlled water saving system disclosed by the invention, the problem of low modern and automatic level of management in irrigation districts at present is comprehensively solved, and the utilization rate of irrigation water is increased, thus valuable water resources are saved, a pivotal role is played on the sustainable development of the irrigation district, and increase for an agricultural modernization degree is benefited.

The invention discloses an information intelligent monitoring system based on an irrigation district and a method thereof, and belongs to the technical field of irrigation district engineering. The method mainly comprises the following steps: information collection: the information of discharge and water level of the irrigation channel is collected on the irrigation district canal; the informationof gate position is monitored; the information of water charge and irrigation operation is collected in real time; the gate monitoring system on the canal is monitored on real time and the video monitoring information is obtained; Information transmission: the irrigation business data, water charge information, flow information, water level information, gate location informationestalish a communication connection with the information collection platform through the Internet network; Information management: the information collection platform stores the discharge information, water level information, sluice location information, water charge information, irrigation business data and video monitoring information in the comprehensive database of irrigation districts; Information collection platform for the application of various information and data; In order to improve the engineering standards of irrigation districts, improve the matching of irrigation districts, improve the results ofmanagement means, is conducive to overcoming the current negative environmental impact of irrigation districts.

The invention relates to the field of water resources distribution, and discloses a method based on Steinberg-Nash-Cournot equilibrium method of optimal allocation of water resources to solve the conflict of interest and multi-level management structure of the irrigation district. The invention firstly establishes a Steinberg-type water right exchange system based on the water right exchange method, and the Steinberg-type water right exchange system comprises: Nash-Cournot equilibrium model; then the optimal solution and the worst solution of the objective function of the upper and lower models of the equilibrium model are calculated. Then the membership function of the upper and lower objective functions is constructed based on the fuzzy objective programming method and the maximum and minimum values of the upper and lower objective functions. Then input the minimum degree of satisfaction of the upper and lower decision-makers; finally, by using the dynamic interaction mechanism, heuristic algorithm, the minimum satisfaction degree of the upper and lower decision makers and the membership function of the upper and lower objective functions, the solution satisfying the satisfactiondegree of the upper and lower decision makers is obtained. The invention is applicable to the distribution of agricultural irrigation water resources.

The invention relates to a headwork stratified water intaking method for a Yellow River diversion irrigation district, which has International patent classification (IPC) numbers of E02B1/00, E02B 13/00, and E02B 7/20, and belongs to the technical field of water engineering. In the water intaking method provided by the invention, the effects of intaking water and blocking sand in a stratified way are achieved by adopting a stratified headwork gate, and conveniently opening gates at different stratifications according to the flow rate of the water flow in front of the gate and a water level, sand content, and the distribution rules of upper sparseness and lower thickness, upper thinness and lower coarseness of the sand along a vertical line; the method can respond different water and sediment situations, and is suitable for riverbed adjustment and ensures designed diversion flow rate, so that the benefit of the irrigation district engineering is played effectively. The method can be popularized and applied in the Yellow River diversion irrigation district downstream of the Yellow River, also can be suitable to be used for diversion headwork of other multi-sediment rivers, is simple in structure and flexible in application, can greatly prolong the service life of the headwork gate, and has remarkable economic benefits and social benefits.