20 results about "Canal water" patented technology

The invention provides an automatic drip irrigation regulation and control method and system for a well and canal combined irrigation area, and relates to the technical field of drip irrigation regulation and control, and the method comprises the steps: carrying out the timing sequence sensing of multi-source farmland environment parameters through M farmland environment sensing units of M drip irrigation land parcels, and carrying out the local drip irrigation coupling demand decision; m real-time drip irrigation strategies returned by the M farmland environment sensing units are received, drip irrigation load compatibility analysis is executed, and the M real-time drip irrigation strategies are decomposed into K groups of parallel drip irrigation strategies; backtracking well and canal operation time sequence data to perform well and canal water supply proportion analysis; and in the process of driving the proportional mixing valve and the pressure regulation and control unit in a linkage manner by adopting a water source proportional regulation and control instruction and circularly executing K groups of parallel drip irrigation strategies, executing two-dimensional closed-loop correction according to a load feedback vector. The technical problem that in the prior art, the automatic drip irrigation regulation and control efficiency of the well and canal combined irrigation area is poor can be solved, and the technical effect of improving the automatic drip irrigation regulation and control efficiency is achieved.

The utility model relates to a channel water-saving gate device based on buoyancy self-adjustment, the channel water-saving gate device based on buoyancy self-adjustment comprises a gate groove, a gate and a buoyancy linkage structure, the buoyancy linkage structure comprises a fixing rod arranged on the backwater side of the gate, the fixing rod is rotatably connected with a plurality of levers, the top of the gate is provided with a connecting handle, and the connecting handle is connected with the gate. The first connecting end, close to the gate, of the lever movably penetrates through the connecting handle and then is connected with a first limiting block, and the second connecting end, away from the gate, of the lever is connected with a first floating ball through a connecting rod so that the first floating ball can drive the gate to ascend and descend along the gate groove along with ascending and descending of the water level of the backwater side of the gate. A plurality of second floating balls are connected to the bottom of the gate, and when the gate is completely closed, the second floating balls are higher than the first floating balls, so that when the water level of the upstream side of the gate rises to the second floating balls, the gate can be opened under the action of the second floating balls to drain water. The channel water-saving gate device not only can accurately control the irrigation water level, but also has the flood discharge capacity.

The application relates to the technical field of water quality detection, and discloses a detection method and system for the concentration of suspended solids in a canal water sample, which comprises the following steps: acquiring the environmental parameters of the canal water body in real time, synchronously collecting the light scattering intensity signals and acoustic echo attenuation signals of the canal water body through a near-infrared optical sensor and an acoustic Doppler current profiler, calculating an initial suspended solid concentration value based on the light scattering intensity signals and the acoustic echo attenuation signals, correcting the initial suspended solid concentration value through a dynamic compensation algorithm according to the environmental parameters of the canal water body to generate pre-calibration concentration data, inputting the pre-calibration concentration data into a pre-trained machine learning model to output a final suspended solid concentration value, and wherein the pre-trained machine learning model comprises a random forest regression model and a gradient boosting decision tree model. The scheme can improve the detection accuracy under complex hydrological conditions and the real-time response capability of the model under a disturbance scene.

The application provides a well-canal combined scheduling method coupled with long short memory deep learning, first, a real-time hydrological forecast model is constructed, historical N-day meteorological, hydrological and different water source irrigation amounts are taken as inputs through a long short memory deep learning method to forecast runoff in a short future period, the different water source irrigation amounts include well water and canal water irrigation amounts; then, a real-time water amount scheduling model is constructed, a minimum runoff is taken as a constraint to maximize irrigation area water supply benefit to solve optimal irrigation amounts of different water sources in a short period; finally, the real-time hydrological forecast model and the real-time water amount scheduling model are iterated and simulated until balance is reached, so that optimal well water and canal water irrigation amounts are obtained. The application can realize precise irrigation of an irrigation area, fully utilize water supply capacity of a canal, exchange water supply time for water supply space, fully play water storage engineering capacity of the irrigation area and maximize reduction of drought.

The utility model relates to the technical field of irrigation ditches, and discloses an irrigation ditch water flow adjusting device which comprises a main body structure and a fixing mechanism, the main body structure comprises a fixing frame, the fixing frame is fixedly connected with a fixing plate, the fixing plate is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a worm, the worm is meshed with a worm wheel, and the worm wheel is fixedly connected with the worm wheel. The worm gear is fixedly connected with a connecting shaft, the connecting shaft is fixedly connected with an original gear, the fixing frame is provided with a sliding groove, the sliding groove is connected with a baffle in a sliding mode, the baffle is provided with a tooth groove, and the tooth groove is meshed with the original gear. Compared with traditional manual adjustment, the automatic control mode has the advantages that the accuracy and efficiency of adjustment are greatly improved, the problem that the flow speed is too high or too slow due to improper manual operation or errors is effectively solved, and particularly, the time for stopping irrigation is difficult to accurately grasp during night irrigation, so that the irrigation efficiency is greatly improved. Water resource waste and rice seedling root rot are easily caused.

The utility model discloses a canal overwater prefabricated pipe pile foundation photovoltaic support, and relates to the technical field of photovoltaic supports, the canal overwater prefabricated pipe pile foundation photovoltaic support comprises a prefabricated pipe pile foundation, the upper surface of the prefabricated pipe pile foundation is fixedly provided with an insertion cylinder, the inner part of the insertion cylinder is inserted with an insertion rod, the upper surface of the insertion rod is fixedly connected with an oblique beam, and the oblique beam is fixedly connected with the prefabricated pipe pile foundation. Four cross beam purlins are fixedly mounted on the upper surface of the oblique beam, a photovoltaic panel is fixedly mounted on the upper surfaces of the four cross beam purlins, and a front support and a rear support are fixedly mounted on the front side and the rear side of the lower surface of the oblique beam respectively. By arranging the front support, the rear support, the front stand column, the rear stand column and the four cross beam purlines, the photovoltaic support can be conveniently installed, all the components are assembled in a screw fixed installation mode during installation, on-site welding can be reduced, the construction period can be shortened, the installation efficiency can be improved, installation is more convenient, and the installation cost is reduced. The front support, the rear support, the front stand column and the rear stand column are arranged at the bottom of the oblique beam, and deformation of the oblique beam is small.

The irrigation ditch water flow control device for intelligent irrigation comprises an irrigation ditch main body, a protruding base is arranged on the surface of the upper end of the irrigation ditch main body, a rotating main shaft is arranged on the surface of the inner side of the protruding base, and an adjusting type flashboard is fixedly connected to the outer surface of the rotating main shaft. The lower surface of the adjustable gate plate is attached to the inner side surface of the lower end of the irrigation channel body, the left side face and the right side face of the outer end of the adjustable gate plate are tightly attached to the inner side surface of the irrigation channel body, and the outer side surface of the irrigation channel body is fixedly connected with a supporting seat. The supporting seats are distributed and fixed to the outer surfaces of the left end and the right end of the irrigation channel body, worms are arranged on the surfaces of the inner sides of the supporting seats, a turnable adjustable flashboard structure is adopted, the turning angle of the adjustable flashboard, the opening space angle and the water flow rate can be adjusted through an external manual-automatic integrated driving assembly, and the operation is convenient. Adjustment is flexible and convenient, and the adjustable flashboard is simple in structure and low in cost.

The invention discloses an irrigation area water volume scheduling optimization method based on an index triangular optimization algorithm, and relates to the field of water conservancy informatization. By constructing an optimization model with the branch channel water supply amount as a decision variable and combining an index triangular optimization algorithm, efficient distribution and refined regulation and control of the water amount of the irrigation area are achieved. The water demand of each irrigation piece, a branch channel and different crops in each irrigation period in an irrigation area is integrated, constraint conditions such as the maximum water supply amount of a water source, the water delivery capacity of the channels and the irrigation pieces and the like are introduced, and a multi-objective function system for minimizing the overall water shortage rate and maximizing the crop yield is constructed. Through an index triangular perturbation mechanism, the global exploration capability is enhanced at the initial stage of search, the local search precision is optimized at the later stage, the stability and convergence of solutions are ensured, compared with a traditional method, the water utilization efficiency and the crop yield are improved, the stability of multi-target optimization in a complex environment is enhanced, and the method is suitable for large-scale popularization and application. And a reliable technical support is provided for the construction of an intelligent irrigation area water volume scheduling system.

The application provides a gate linkage control method and device and a series water supply and power generation system. The method is applied to the series water supply and power generation system. The method comprises the following steps: obtaining water demand and current water level information of the series water supply and power generation system; wherein the current water level information at least comprises current river channel water level information and current water diversion main canal water level information; determining gate opening control decisions of a first water diversion gate and a second water diversion gate according to the water demand and the current water level information of the series water supply and power generation system; and performing linkage control on the first water diversion gate and the second water diversion gate according to the gate opening control decisions. The method provided by the above scheme can determine the gate opening control decisions according to the current water demand and the current water level information, so that the gate opening of the multiple water diversion gates can be controlled according to the gate opening control decisions, and the series water supply and power generation system can be accurately controlled.

The application discloses a water resource optimal regulation and control method of a long vine snake gourd water network irrigation system, and comprises the following steps: (1) establishing a generalization and network topology relationship of a long vine snake gourd water network system water supply end, water taking end and water conveying and distributing end; (2) designing a three-layer hierarchical control structure of "general regulation-subordinate regulation-self regulation" according to the concept of "multi-level hierarchical control structure", wherein, the "general regulation layer" is a backbone water source regulation, water is pumped to key nodes of each backbone branch canal through a canal head pump station; the "subordinate regulation layer" regulates water quantity to branch canal water distribution points; the "self regulation layer" forms a point-to-point relationship of many water distribution points of the trunk and branch canals, local ponds, i.e. low vine snake gourds and water users, so as to redistribute water quantity; (3) constructing a long vine snake gourd reservoir and canal combined multi-objective water resource optimal regulation and control model and solving by using NSGA-II, wherein, the model comprises: determining a decision variable, establishing an objective function and constructing a constraint condition; and the application provides a scientific basis for water resource optimal regulation and control of the long vine snake gourd water network irrigation system.

The application discloses an ecological protection structure of an original main river channel of an artificial canal, which comprises an original main river channel bend, a branch stream and a canal. The branch stream flows into the original main river channel bend to divide the original main river channel bend into an upstream river section and a downstream river section. The canal has two intersection openings with the original main river channel bend. From upstream to downstream, the two intersection openings are an upstream intersection opening and a downstream intersection opening. A stilling basin is arranged in the downstream river section. A sand guide ridge is arranged near the downstream river section corresponding to the branch stream, so as to guide the silt and part of the water body of the branch stream to the upstream river section. A dike is arranged at the upstream intersection opening. A plurality of water passing grooves are formed in the top end of the dike. The water passing grooves are arranged at intervals. The groove bottom height of the water passing grooves is higher than the water level of the canal in the dry season and lower than the flood level of the canal in the flood season. The ecological protection structure can keep the water body of the upstream river section flowing all the year round and keep the biodiversity of the upstream river section.

The utility model relates to the technical field of fertilization, in particular to an adjustable fertilization device. When the device is used, the fertilizer inlet is connected to the fertilizer storage assembly in which a fertilizer is stored. The fertilizer receiving assembly is placed in the irrigation canal and immersed below the canal water surface of the irrigation canal, the fertilizer storage assemblies are placed on the ground on the two sides of the irrigation canal, and the fertilizer in the fertilizer storage assemblies can enter the fertilizer receiving assembly through the fertilizer conveying pipe under the action of gravity. The fertilizer conveying pipe is provided with threads, and the fertilizer receiving assembly is connected to the threads in a screwed mode. The fertilizer receiving assembly is gradually rotated so that the fertilizer receiving assembly can advance on the threads, and the abutting wall at the bottom of the fertilizer receiving assembly is close to or far away from the fertilizer outlet, so that the amount of the fertilizer entering the fertilizer bearing cavity is adjusted. And the fertilizer entering the fertilizer bearing cavity is washed by the canal water to be mixed in the canal water and flows out from the first discharge hole, so that adjustable fertilization of the canal water of the irrigation canal is realized.

The invention discloses a pump station approach channel water level measuring device and method. Comprising an unmanned ship which is provided with a propelling device and can move along a river channel; a radar water level gauge, an anchor gear and a mooring device are mounted on the unmanned ship; wherein the radar water level gauge is used for measuring the height H from the bottom of the boat to the bottom of a river channel; the anchor gear is used for fixing the small unmanned ship at a preset measurement point P; the mooring equipment is used for measuring the distance between the small unmanned ship and the mooring bollard through the cable crane encoder, providing power for the small unmanned ship through the power cable and transmitting data measured by the radar water level gauge to the pump station through the data cable. And the small unmanned ship can move towards the pump station side by taking back the cable through the cable crane. The measuring device can automatically move to a corresponding measuring point according to the water level and is anchored at the measuring point position, and manual intervention is reduced.

The invention relates to the technical field of water environment monitoring, in particular to an urban canal water environment monitoring device which comprises a monitor, a monitoring component is arranged at the output end of the monitor, a first connecting frame is fixedly connected to the left side of the front surface of the monitor, and a second connecting frame is fixedly connected to the right side of the front surface of the monitor. A transmission part is arranged on the adjacent side of the first connecting frame and the second connecting frame. According to the device, through limiting of a cam groove, a driven rod and a fixing frame, a sliding rod reciprocates up and down, a connecting block drives a matching needle to reciprocates up and down, electromagnetic induction is conducted through a magnetic ring, the frequency generated when water flows is obtained, when the frequency is too high, the flow speed is too high, and when the water flow speed is too high in rainy days, the water flow speed is too high; if the water flow is torrential, the monitor can give an alarm immediately, natural disasters are prevented in advance, the service life of the sensor is greatly prolonged through the monitoring means, and the maintenance cost is reduced.

The invention discloses a multi-water-source joint optimization scheduling method for a cold region rice irrigation area, and belongs to the technical field of agricultural water resource optimization configuration and irrigation engineering. Selecting typical representative years of a high-water year, a flat-water year and a low-water year; the method comprises the following steps: simulating the growth and yield of rice under different irrigation conditions by using an AquaCrop crop model, obtaining a Pareto optimal solution set under each hydrological year type by taking the maximum rice yield and the minimum irrigation water quantity as targets, and fitting and constructing a secondary moisture production function. The multi-stage canal system of the irrigation area is classified, a representative canal is selected to construct a random multi-target two-stage planning model, and underground water level constraint, water balance constraint and canal flow constraint are embedded by taking system economic benefit maximization and canal system water delivery loss minimization as double targets. And solving to obtain a plurality of groups of Pareto optimal scheduling schemes, carrying out multi-index comprehensive evaluation and sorting, and selecting an optimal scheme. According to the method, the irrigation water consumption and the channel water delivery loss are reduced while the rice yield is guaranteed or increased.

The present application relates to a kind of canal water level probability prediction method and system based on MC Dropout and CNN-LSTM, belong to water level prediction technical field.The prediction method includes the following steps:s101.data acquisition;S102.model architecture building;S103.model training and inference.The present application fuses convolutional neural network (CNN) to extract the local space-time characteristics of multi-source hydro-meteorological data, long short-term memory network (LSTM) captures long time series dependency relationship, and integrates Monte Carlo Dropout (MC Dropout) variation inference mechanism and heteroscedastic loss function, realizes the accurate prediction of key water level observation station, uncertainty decomposition (Aleatoric uncertainty and Epistemic uncertainty) and the synchronous output of confidence interval.

The water impurity cleaning device for the irrigation canal comprises a fixing frame, two transmission shafts are rotationally connected to the interior of the fixing frame, fixed transmission rollers are fixedly connected to the middles of the two transmission shafts, and a fixing assembly is fixedly connected between the two fixed transmission rollers. The two ends of the two fixed transmission rollers are symmetrically and fixedly connected with fixed rods, the two ends of the two transmission shafts are symmetrically provided with threads, the side faces of the two transmission shafts are symmetrically provided with rectangular sliding grooves, the two ends of the fixed rods are slidably connected with movable transmission rollers, and the ends, away from each other, of the movable transmission rollers are rotatably connected with rotary connecting bases; the overall span of the device can be adjusted, the device can be conveniently installed in irrigation canals of different specifications, sundries in the canals can be continuously and differently conveyed and then cleaned to the bank, cleaning by workers is better facilitated, the labor intensity of the workers is conveniently reduced, and the cleaning efficiency is improved.

The invention discloses a multi-sensor fusion irrigation canal system flow real-time monitoring method, and relates to the technical field of irrigation canal flow monitoring, and the method comprises the following steps: collecting water level data and flow velocity data of irrigation canal water flow based on different sensors, and collecting appearance section data of an irrigation canal; data correction processing is carried out, the water level and the flow velocity of the irrigation canal water flow are corrected, and corrected water level information and corrected flow velocity information are obtained; performing overflowing analysis processing according to the appearance section data of the irrigation canal, and obtaining overflowing area information according to the corrected water level flow velocity information; the flow of irrigation canal water flow is obtained based on the corrected flow velocity information and the overflowing area information, and the flow of the irrigation canal system is monitored in real time; the method is used for solving the problem that when an existing irrigation canal flow monitoring technology monitors the flow of the irrigation canal in real time, the flow of the sensor installation position cannot be accurately obtained according to sensor data and appearance parameters of the irrigation canal at the installation position.

The application discloses a kind of canal water-gas interface gas mass transfer coefficient acquisition method and device, comprising: placing wave height instrument on target canal and its tributary, monitoring river wave shape;According to the wave shape monitored by Fourier transform, the characteristic wave period of target canal and its tributary is obtained;According to the characteristic wave period of target canal and its tributary, the mean square slope dominated by ship wave of target canal is calculated, and the mean square slope dominated by wind wave is calculated;Based on the mean square slope dominated by ship wave and the grade of target canal, the gas mass transfer coefficient branch mediated by ship wave is calculated;According to the mean square slope dominated by wind wave, the gas mass transfer coefficient branch mediated by wind wave is calculated;Ship wave-mediated gas mass transfer coefficient branch and wind wave-mediated gas mass transfer coefficient branch are added, and as the water-gas interface gas mass transfer coefficient of target canal.The application has high accuracy and high reliability.

The utility model relates to the technical field of irrigation auxiliary equipment discloses irrigation water channel water level regulating gate structure, including the outer frame, the front side middle part fixed connection of outer frame has long axle, the outer wall sliding connection of long axle has sliding block no.