5 results about "Grid analysis" patented technology

This application discloses a method, system, and device for identifying target geological structures in coal seams. The target geological structures include folds, faults, lower local thickening zones, and upper local thickening zones. The method acquires full measured data of cross-layer boreholes in the target longwall face, along with the strike, dip, and true dip parameters of the coal seam. Preprocessing yields the three-dimensional coordinates of the borehole entry point, the three-dimensional coordinates of the exit point, and the true thickness of the coal seam. A square nine-grid analysis window is constructed with the strike and dip of the coal seam as the directional reference. Target cross-layer boreholes with stable coal seam thickness are selected based on the deviation of the true thickness of the coal seam. A spatial plane equation of the coal seam is established to calculate the theoretical entry point elevation of the target cross-layer borehole, generating regional target geological structure identification results. A sliding window traverses the entire longwall face, outputting the overall regional target geological structure identification results. This method can stably identify hidden small target geological structures and significantly improves computational efficiency compared to traditional methods. It can be widely applied to advanced geological exploration scenarios in coal mine longwall faces.

The application relates to a WebGL-based three-dimensional local terrain protrusion weakening method, and belongs to the technical field of computer graphics visualization, which comprises terrain grid loading, loading terrain data in the form of a grid into a scene in a WebGL rendering engine, storing information in the form of a.terrain format binary file, then performing grid analysis, loading block terrain data according to a terrain level of detail strategy, analyzing terrain data, loading and analyzing downloaded binary file data according to terrain grid levels and row and column numbers, compressing the data by using a zig-zag coding method, then performing vertex height dynamic adjustment, and finally performing terrain triangular net reconstruction. The WebGL-based three-dimensional local terrain protrusion weakening method can weaken terrain protrusion problems by modifying the vertex elevation of a terrain data-free area, does not cause distortion of local high-precision terrain and models in a scene, can weaken terrain cliff problems existing in three-dimensional local terrain protrusions, and does not deform the terrain and models in the scene.

A transmission / distribution system operation coordination-based HVDC operation system is provided, based on the operation of HVDC (High Voltage Direct Current) to expand supply stability, improve power quality, and enhance the economic efficiency of system operation throughout the domestic power system. The HVDC operation system is characterized by comprising: a power system management terminal that generates power system operation information; a plurality of HVDCs that generate HVDC availability information; a power market management server that generates power market operation information; distribution network operation information; a distribution system management computer that generates distribution network generation planning information and real-time distribution network generator operation information using distribution network generator bidding information and transmission system distribution network generation capacity acceptance information among the power market operation information; and an HVDC operation computer that generates HVDC operation planning information and distribution network generation capacity acceptance information based on the distribution network generation planning information, and generates real-time control information for controlling the operation of the HVDC based on the HVDC operation planning information, power system operation information, and distribution network operation information.

This invention discloses a method for predicting the spread of anthracnose in tea trees based on remote sensing imagery and grid analysis, comprising the following steps: acquiring multispectral images of tea plantations from unmanned aerial vehicles (UAVs), identifying soil background areas, healthy tea tree areas, and infected areas; dividing the tea plantation into a uniform grid space, defining the state of each grid point as either a healthy grid point or an infected grid point, setting a diffusion rate calculation method, and calculating the diffusion rate of each grid point; setting disease diffusion rules, updating the state of each grid point according to the disease diffusion rules, and completing the prediction of anthracnose spread. This invention, by fusing multi-temporal UAV remote sensing monitoring data and continuous time-series environmental data, constructs a spatiotemporal coupling model describing the disease infection mechanism between adjacent grid points, dynamically simulating the spatial spread and evolution trend of the disease, overcoming the problems of strong experience dependence, poor spatial dynamic simulation capability, and low spatiotemporal resolution of traditional disease prediction methods.

This invention discloses a method and system for professional annotation and drawing generation of BIM models based on grid analysis. The method includes: Step 1: Selecting a profession and its corresponding professional rule set through a profession selection module; Step 2: Obtaining all model data in the current two-dimensional view of the BIM system and performing corresponding data preprocessing according to the annotation type of the profession selected in Step 1; Step 3: The annotation generation module automatically generates annotations for specific components according to the selected profession; Step 4: Automatically generating drawings with professional annotations. This invention relates to the field of building information model data processing and engineering drawing automation technology, and can solve the problems of existing technologies that cannot perform automatic annotation based on grid analysis and cannot perform customized annotation for different professions.