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公开(公告)号：US10579756B2
公开(公告)日：2020-03-03
申请号：US15544160
申请日：2016-06-30
Inventor： Di Xu , Shaohui Zhang , Meijian Bai , Yinong Li , Fuxiang Li
IPC: G06F17/50
Abstract: A simulation method of a surface water movement process in surface irrigation, comprising: acquiring surface relative elevation data, border surface roughness coefficient data and surface water infiltration rate data of a target border check; substituting surface relative elevation data, border surface roughness coefficient data and surface water infiltration rate data into improved full hydrodynamic equations, and performing numerical solution on improved full hydrodynamic equations to obtain a simulated surface water depth value and simulated values of vertical integral average velocities of an irrigation water flow in x-coordinate and y-coordinate directions of a certain measurement site in the target border check at a certain time; and obtaining simulated values of unit width discharge of the irrigation water flow in x-coordinate and y-coordinate directions, respectively according to simulated surface water depth value and simulated values of the vertical integral average velocities of the irrigation water flow in x-coordinate and y-coordinate directions.
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公开(公告)号：US20180249648A1
公开(公告)日：2018-09-06
申请号：US15544130
申请日：2016-03-22
Inventor： Di Xu , Caili Wu , Meijian Bai , Yinong Li , Fuxiang Li , Yuan Shi
CPC classification number: A01G25/16 , A01G25/167 , G05B13/042
Abstract: The present invention discloses a method for controlling surface irrigation based on surface water depth information, which belongs to the technical field of irrigation. The method comprises: measuring in real time surface water depths and water stream advancing durations of each of measuring points in a first half of a target farmland block, and substituting them into a surface irrigation model, to obtain initial values of soil infiltration parameters, substituting the initial values of the soil infiltration parameters into the surface irrigation model, to obtain analogue values of surface water depths of each of measuring points having water before a preset measuring point when the water stream in the first half of the target farmland block has advanced to the preset measuring point, by using the objective function that the average value of the errors of the measured values that are corresponding to it is minimum, reversely solving and optimizing the soil infiltration parameters, and substituting the optimized soil infiltration parameters again into the surface irrigation model, to predict a complete process of the surface irrigation, and adjusting an irrigation duration according to the prediction result, thereby realizing accurately controlling on the surface irrigation process. The method that is provided by the present invention can accurately control surface irrigation, to effectively improve the irrigation quality and promote the level of field management.
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Patent Agency Ranking
公开(公告)号：US12067079B2
公开(公告)日：2024-08-20
申请号：US17144150
申请日：2021-01-08
Inventor： Baozhong Zhang , Zheng Wei , He Chen , Xin Han , Yinong Li , Taisheng Du , Zhigong Peng , Jiabing Cai , Congying Han , Yaqi Wang
IPC: G06N3/04 , G06F18/214 , G06F18/241 , G06F18/2415 , G06N3/047 , G06N3/08
CPC classification number: G06F18/214 , G06F18/24155 , G06N3/047 , G06N3/08
Abstract: A farmland reference crop evapotranspiration prediction method based on uncertainty of meteorological factors, includes: S1. acquiring a set number of groups of weather forecast data of a prediction region within a preset time period; S2. inputting each group of weather forecast data into a Bayesian probability forecast system to obtain corrected weather forecast data; and S3. inputting each group of the corrected weather forecast data into a trained RBF neural network, and predicting to obtain a farmland reference crop evapotranspiration. In the present invention, the Bayesian probability forecast system is configured to correct the weather forecast data and eliminate uncertainty of weather forecast data to obtain the accurate reference crop evapotranspiration forecasted by the RBF neural network using these data.
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公开(公告)号：US10132625B2
公开(公告)日：2018-11-20
申请号：US15312251
申请日：2015-11-27
Inventor： Shaohui Zhang , Di Xu , Yinong Li , Meijian Bai , Fuxiang Li
Abstract: The present invention belongs to the technical field of irrigation and water conservancy, and discloses a method for acquiring anisotropic basin surface roughness and use thereof. The method includes: preselecting two experimental strip fields respectively parallel to length direction and width direction of a target basin, to respectively acquire first surface water flow advancing process data of the two experimental strip fields, where the target basin may be regarded as a square-shaped field; acquiring two pieces of isotropic basin surface roughness respectively by using one-dimensional complete hydrodynamic model for basin irrigation according to the surface water flow advancing process data; and substituting the isotropic basin surface roughness into an elliptic equation that anisotropic basin surface roughness satisfies, to solve anisotropic basin surface roughness of the target basin, the anisotropic basin surface roughness including basin surface roughness components parallel to and perpendicular to shallow furrows on basin surface and crop planting direction in the target basin. The anisotropic basin surface roughness can truly reflect the resistance of the basin surface against the water flow, thereby improving simulation precision of surface irrigation hydrodynamics, and acquiring more accurate irrigation performance indexes.
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公开(公告)号：US20190108297A1
公开(公告)日：2019-04-11
申请号：US15544160
申请日：2016-06-30
Inventor： Di Xu , Shaohui Zhang , Meijian Bai , Yinong Li , Fuxiang Li
CPC classification number: G06F17/5018 , G06F17/50 , G06F17/5009 , G06F2217/16
Abstract: A simulation method of a surface water movement process in surface irrigation, comprising: acquiring surface relative elevation data, border surface roughness coefficient data and surface water infiltration rate data of a target border check; substituting surface relative elevation data, border surface roughness coefficient data and surface water infiltration rate data into improved full hydrodynamic equations, and performing numerical solution on improved full hydrodynamic equations to obtain a simulated surface water depth value and simulated values of vertical integral average velocities of an irrigation water flow in x-coordinate and y-coordinate directions of a certain measurement site in the target border check at a certain time; and obtaining simulated values of unit width discharge of the irrigation water flow in x-coordinate direction and y-coordinate directions, respectively according to simulated surface water depth value and simulated values of the vertical integral average velocities of the irrigation water flow in x-coordinate and y-coordinate directions.
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公开(公告)号：US10455781B2
公开(公告)日：2019-10-29
申请号：US15544130
申请日：2016-03-22
Inventor： Di Xu , Caili Wu , Meijian Bai , Yinong Li , Fuxiang Li , Yuan Shi
Abstract: A method for controlling surface irrigation comprising: measuring in real time surface water depths and water stream advancing durations of each of measuring points in a first half of a target farmland block, and substituting them into a surface irrigation model, to obtain initial values of soil infiltration parameters, substituting the initial values into the surface irrigation model, to obtain analog values of surface water depths of each of measuring points having water before a preset measuring point when the water stream in the first half of the target farmland block has advanced to the preset measuring point, by using the objective function that average value of the errors of the measured values that are corresponding to it is minimum, reversely solving and optimizing the soil infiltration parameters, and substituting optimized soil infiltration parameters again into the surface irrigation model, and adjusting an irrigation duration according to the prediction result.
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公开(公告)号：US20180038688A1
公开(公告)日：2018-02-08
申请号：US15312251
申请日：2015-11-27
Inventor： Shaohui Zhang , Di Xu , Yinong Li , Meijian Bai , Fuxiang Li
IPC: G01B21/30
CPC classification number: G01B21/30 , A01G25/167 , G01N2033/245
Abstract: The present invention belongs to the technical field of irrigation and water conservancy, and discloses a method for acquiring anisotropic basin surface roughness and use thereof. The method includes: preselecting two experimental strip fields respectively parallel to length direction and width direction of a target basin, to respectively acquire first surface water flow advancing process data of the two experimental strip fields, where the target basin may be regarded as a square-shaped field; acquiring two pieces of isotropic basin surface roughness respectively by using one-dimensional complete hydrodynamic model for basin irrigation according to the surface water flow advancing process data; and substituting the isotropic basin surface roughness into an elliptic equation that anisotropic basin surface roughness satisfies, to solve anisotropic basin surface roughness of the target basin, the anisotropic basin surface roughness including basin surface roughness components parallel to and perpendicular to shallow furrows on basin surface and crop planting direction in the target basin. The anisotropic basin surface roughness can truly reflect the resistance of the basin surface against the water flow, thereby improving simulation precision of surface irrigation hydrodynamics, and acquiring more accurate irrigation performance indexes.
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