23 results about "Prevailing winds" patented technology

The invention provides a balcony arbor layout optimization method based on a conditional diffusion generative model, and the method comprises the following steps: S1, obtaining summer climate parameters of a region where a fourth-generation housing project is located and a size and position relation between a hanging garden type balcony and an indoor space, generating project scene description data according to the summer prevailing wind direction, the opening orientation of the hanging garden type balcony and the communication condition of the hanging garden type balcony and each main room; the invention provides a balcony arbor layout optimization method based on a conditional diffusion generation model, and aims to establish a hanging garden type balcony arbor layout automatic generation and optimization method which can give consideration to the connectivity of a ventilation channel in a prevailing wind direction and the thermal comfort requirement of multiple rooms under the given summer climate and building geometric conditions of a fourth-generation house. The hanging garden type balcony arbor configuration is matched with natural ventilation of a building and an indoor thermal environment in a synergetic manner. The air garden type balcony arbor configuration can be optimized while the ventilation channel is guaranteed to be smooth, the indoor thermal comfort in summer is improved, and manual trial calculation is reduced.

The utility model relates to an offshore enclosure system which comprises a first enclosure belt and a second enclosure belt which are arranged between the interiors of a concave shoreline, a water body is arranged in the concave shoreline, and blue-green algae flows into the surface of the water body towards the inner side of the concave shoreline along the prevailing wind direction; the first enclosure belt is located on the inner side of the second enclosure belt and comprises a plurality of first enclosures arranged side by side, the lower end of the first enclosure belt sinks to the bottom of a water body, and a first interval is formed between every two adjacent first enclosures; the second enclosure belt comprises a plurality of second enclosures arranged side by side, the lower ends of the second enclosures sink to the bottom of the water body, and a second interval is formed between every two adjacent second enclosures, so that the maintenance and replacement cost of single enclosures is reduced, meanwhile, the first interval and the second interval are arranged in a staggered mode, and the first enclosure belt and the second enclosure belt jointly share the impact force of water body flowing; the possibility that the first enclosure belt and the second enclosure belt are impacted and damaged is reduced while the effect of enriching the blue-green algae is achieved, and the service life of the first enclosure belt and the service life of the second enclosure belt are prolonged.

The application provides a generation method of a solstice seal based on parameterized modeling and azimuth coupling symmetry, and relates to the technical field of seal design. The generation method of the solstice seal determines a yin-yang background color according to astronomical characteristics of solstice origin and a parameter according to a season where the solstice is located, and generates a normalized boundary curve. The generation method calculates a solstice prevailing wind azimuth based on meteorological data. The generation method divides a main area and a remaining area according to a season parameter, and calculates character coordinates. The generation method applies a vertical symmetry criterion to layout solstice characters in the remaining area, and verifies vertical symmetry and minimum spacing constraints. The application can automatically generate a solstice seal meeting the requirements of traditional culture according to scientific genes, cultural backgrounds and natural characteristics of the 24 solar terms, through accurate modeling and optimization calculation.

Methods and apparatus for detecting and measuring gas flow are disclosed, in which lidar range information acquired during detection of a gas using a lidar sensor is used together with prevailing wind data to determine local wind data for a leak location. This local wind data, which can include one or more vector or 3D wind models, is used to determine flow rates.

The invention belongs to the technical field of anti-seismic design of high-rise structures, and provides a method for reinforcing horizontal cracks in the middle-upper portion of a solar heat absorption tower and the solar heat absorption tower. The method comprises the steps that the height of a concrete cylinder in the heat absorption tower is determined, and a profile steel reinforced concrete section is determined at the preset position of the middle-upper portion of the concrete cylinder according to the height; a plurality of pieces of H-shaped steel are arranged in the circumferential direction of the section steel reinforced concrete section; for an area without a leading direction of wind load, the H-shaped steel is uniformly arranged in the circumferential direction of the concrete barrel, and the circumferential distance between the adjacent H-shaped steel is determined according to an earthquake acceleration value; for an area with the prevailing wind direction, the H-shaped steel is non-uniformly arranged in the circumferential direction of the concrete barrel, and directional correction is conducted on the circumferential distance according to the prevailing wind direction; and when the reinforcing position, the layout form and the number of the H-shaped steel are determined, the structural characteristics, the stress condition and the field wind load condition of the heat absorption tower are comprehensively considered, and the problem of too high cost is avoided on the basis of ensuring the reinforcing effect.

The present disclosure relates to methods for operating wind turbines (10) and charging one or more auxiliary power sources (84) for providing auxiliary power to one or more wind turbines (10). A method comprises pitching the wind turbine blades (22) to a predetermined idling pitch angle such that the wind turbine generator (42) produces power for charging one or more auxiliary power sources (84) above a predetermined wind speed. The method further comprises keeping the pitch angle (25) of the blades (22) at the idling pitch angle and charging the auxiliary power sources (84) when a prevailing wind speed reaches or exceeds the predetermined wind speed.

The invention discloses a method for finely measuring and calculating the developable capacity of a wind power installation technology in a specified area, and the method comprises the following steps: S1, obtaining the geographic information and wind resource data of a target area, and superposing a restrictive factor layer to obtain available land resources; s2, dividing available land into a mountain land type and a flat land type based on topographic features; s3, preferentially extracting a ridge line corridor of a mountain type, and performing mountain unit arrangement in combination with a main wind direction and a fan wake flow model; s4, updating the available boundary of the flat ground type based on the wake flow influence area of the mountain unit, and performing boundary recursive unit arrangement in the flat ground type; s5, matching a corresponding model according to the wind speed data of the arranged point positions; and S6, accumulatively calculating the total installed capacity. According to the method, on the premise that the terrain and wake flow arrangement rule is met, the technology developable quantity of wind power installation can be rapidly and automatically measured and calculated in a large range.

The invention discloses a fire-fighting unmanned aerial vehicle autonomous patrol system and method based on the Internet of Things, and relates to the technical field of intelligent fire fighting, and the method comprises the steps: converging fixed Internet of Things sensors, unmanned aerial vehicle airborne sensor sensing data and unmanned aerial vehicle cluster state data, processing the data into a standardized data set, dividing park monitoring nodes, and calculating a comprehensive risk value; constructing a weighted directed dynamic risk map by combining the node space relationship, the distance and the environment prevailing wind direction; simulating risk propagation based on a graph, identifying key nodes to form a key check set, determining a routine inspection set, and generating a differentiated task set; calculating task priority and execution cost, establishing a collaborative task allocation model with maximized system overall efficiency, solving the collaborative task allocation model, and generating a task allocation scheme; the system comprises corresponding function modules, realizes accurate risk identification and intelligent task distribution, improves the patrol efficiency, and guarantees the fire safety of the park.

The present invention is a one-dimensional sonic anemometer paired with a tail vane that continuously rotates the sonic anemometer to be coaligned with the prevailing wind. The one-dimensional sonic anemometer being coaligned with the wind vector can measure the total wind speed directly with the wind direction measured by detection of the relative orientation of the instrument with respect to North as the instrument is held into the wind. Rather than a conventional two-dimensional sonic anemometer, the invention is a hybrid one-dimensional sonic anemometer with a mechanical wind direction measurement.

The invention relates to a method for spreading a spreading material mixture (M) comprising several spreading materials (S1, S2) using an agricultural centrifugal spreader (1), which has at least two spreading devices (2, 3) arranged at different spreading heights (H1, H2) for spreading one spreading material (S1, S2) each, and a wind sensor (6) for detecting wind conditions (W), wherein the prevailing wind conditions (W) during spreading are detected and setting parameters (E1, E2, E3, E4, E5) of the spreading devices (2, 3) are set to generate a wind-independent spreading pattern (F) depending on the detected wind conditions (W), wherein the setting parameters (E1, E2, E3, E4, E5) of the spreading devices (2, 3) are set differently depending on the respective spreading height (H1, H2).

The invention provides an environmental wind field-oriented cascaded low-altitude torrent probability prediction method, and belongs to the field of atmospheric environment and weather forecast. According to the invention, a cascaded prediction means is adopted to realize driving by sea level air pressure field data, and a scheme for predicting whether low-altitude torrent occurs or not and the probability of the prevailing wind direction is realized, wherein the scheme is rapid, efficient, lightweight and capable of being updated in a rolling manner. Comprising the following steps: S1, identifying low-altitude jet stream and extracting a prevailing wind direction; s2, screening key space modals significantly related to the low-altitude torrent; s3, constructing a multi-classification logistic regression model; s4, constructing a time sequence prediction model; s5, real-time data assimilation and principal component value prediction are carried out; step S6, low-altitude jet stream probability prediction; and S7, real-time and rolling updating of a prediction result is carried out.

This invention discloses a segmented assessment method for transmission lines based on the coupling of micro-topographic axis and wind direction. The method includes the following steps: segmenting the transmission line and calculating the axial azimuth of each segment; determining the axial azimuth of the micro-topographic axis, obtaining the prevailing wind direction angle at the location of the micro-topographic axis, and calculating the minimum axial angle between the two; calculating the normal relative elevation difference index of the micro-topographic axis; calculating the spatial relationship between each transmission line segment and the micro-topographic axis; and coupling the minimum axial angle, normal relative elevation difference index, and spatial relationship between each transmission line segment and the micro-topographic axis to construct a multi-dimensional risk profile of the transmission line segment. This application enables refined analysis of different line segments, avoids the problem of spatial information averaging caused by overall analysis, and thus significantly improves the spatial accuracy of transmission line assessment in complex terrain areas.

The invention relates to the technical field of data processing, in particular to an AI new energy power prediction method, which comprises the steps of constructing an upstream candidate station set; taking the target station as a center, delimiting a radius range in the upstream direction of the prevailing wind direction, obtaining actually measured wind speed data of adjacent stations in the range, and forming an upstream candidate station set; for each upstream candidate station, calculating the spatial-temporal correlation between the upstream candidate station and the target station, and selecting 1-3 optimal upstream target stations; constructing a dynamic wind speed correction model; based on the screened optimal upstream target station, constructing a dynamic wind speed correction model taking the NWP forecast wind speed as a reference and taking the actually measured wind speed of the upstream station as a core; and constructing and applying a power mapping model, and outputting final power prediction. According to the invention, through upstream and downstream linkage, wind speed correction is rapidly carried out on the downstream electric field by using real-time change of the upstream wind speed, forecast wind speed data is adjusted in time, and a more accurate data basis is provided for power prediction.

The invention discloses a city updating planning system and method based on city space climate adaptability, and relates to the technical field of city updating planning, and the system integrates old area topographic data, water system distribution data and building micromorphology data, constructs an old area three-dimensional space model, analyzes a dominating mechanism of terrain fluctuation on local airflow, and improves the urban updating planning efficiency. Identifying a cold air generation area and a heat island gathering area, drawing a wind environment base map, identifying an air flow retardation area and a heat accumulation core area based on the wind environment base map, simulating an air induction path in combination with a summer prevailing wind direction, simulating a cold wind permeation area in combination with a winter prevailing wind direction, and combining a proper temperature of local residents; according to the method, through combination of three-dimensional data integration, airflow mechanism analysis, precise path simulation and resident appropriate temperature, the precision and practicability of old area ventilation corridor planning are remarkably improved.

This invention provides a method and system for analyzing the relationship between terrain slope and wind speed acceleration effect under prevailing wind direction. The method includes: determining the terrain slope under prevailing wind direction based on hillside terrain parameters within the range of the prevailing wind direction angle; obtaining the wind speed acceleration ratio corresponding to the hillside terrain based on fluid simulation analysis; and constructing a relationship curve between the terrain slope and the wind speed acceleration ratio based on the terrain slope and the wind speed acceleration ratio. The method provided by this invention constructs a relationship curve between the terrain slope and the wind speed acceleration ratio under prevailing wind direction using the terrain slope determined by hillside terrain parameters and the wind speed acceleration ratio obtained from simulation analysis. This provides data support for analyzing the intrinsic relationship of wind speed acceleration effect caused by hillside slope and provides a technical path for directly obtaining the wind speed acceleration ratio through hillside slope.

This invention discloses a semi-active control omnidirectional magnetorheological elastomer (MLE) vibration damping device and control method suitable for wind turbine towers, comprising an electric drive turntable module, a MLE vibration damping module, and a pressure-magnetic synergistic stabilization module. The electric drive turntable module uses a pressure sensor ring to identify wind direction, driving the turntable to align the vibration damping module's vibration direction with the wind direction, and periodically oscillating near the prevailing wind direction to cope with turbulence. The MLE vibration damping module achieves synchronous movement of multiple sets of MLEs through a linkage mechanism, using electromagnetic fields to adjust stiffness. The pressure-magnetic synergistic stabilization module senses upward force through a pressure sensor and generates a balancing magnetic force to ensure stable operation. This device employs a dual-variable intelligent control system combining the variable stiffness and damping characteristics of the MLE with rod adjustment, optimizing rod states and unified current in real time based on spectrum analysis to achieve wide-bandwidth, precise, and efficient semi-active vibration damping, effectively improving the vibration resistance of wind turbine towers.

The invention discloses a wind speed and wind direction combined prediction method suitable for a bridge structure monitoring system, and the method comprises the steps: S1, collecting the time series data of the wind speed and wind direction in the bridge structure monitoring system, and carrying out the normalization processing; s2, calculating the prevailing wind direction of the bridge structure monitoring point according to the historical wind direction data, and decomposing the wind speed into a transverse wind component and a longitudinal wind component along the prevailing wind direction; s3, respectively establishing an LSTM neural network model for the transverse wind component and the longitudinal wind component, and performing training; s4, respectively predicting a transverse wind component and a longitudinal wind component by utilizing the trained LSTM model; and S5, combining the transverse wind component and the longitudinal wind component obtained by prediction to obtain wind speed and wind direction prediction results. The method can significantly improve the wind direction prediction precision, has real-time performance and engineering applicability, is suitable for strong wind monitoring and structure operation safety early warning in a bridge structure monitoring system, and is also applied to the disaster prevention safety field of high-rise buildings, railways and other infrastructures.

The invention relates to a fresh air system control method, system and equipment based on intelligent prediction and a medium, and relates to the technical field of air purification, and the method comprises the steps that orientation information and real-time wind direction data of a building provided with a fresh air system and allergen concentration forecast values in all unit grids of a building area are obtained; according to the building orientation information, the real-time wind direction data and an allergen concentration forecast value in each unit grid of the area, whether the invasion risk of invading the building in the prevailing wind direction beyond a safe allergen exists in a future preset time period or not is judged; and if the invasion risk exists, a fresh air inlet branch on the windward side is closed, an air volume adjusting device is controlled to stop or reduce introduction of fresh air from the outside, and meanwhile indoor air circulating filtration is started. According to the method, the risk that the allergens invade the interior of the building can be recognized, the air path is actively adjusted to defend the allergens, and then the safety of indoor air is improved.

Wind turbine farms are presented including: a number of steerable wind turbines, where each of the steerable wind turbines includes a turbine diameter and a blade center locus, where each of the steerable wind turbines are separately and axially steerable about a vertical axis to align with one or more prevailing wind directions, where the steerable wind turbines is arranged in one or more modules, where each of the modules is defined by at least two steerable wind turbines, where each of the at least two steerable wind turbines in a module is positioned in a fixed position.

The invention discloses a forest fire spreading analysis method and system, and the method comprises the steps: introducing an included angle beta between a spreading direction and a reference direction and an included angle theta between a main wind direction and the reference direction through building a polar coordinate system, and projecting a wind speed and a slope effect to any fire spreading direction through a direction projection method; the breakthrough from five discrete directions to omnidirectional continuous calculation is realized; according to the method, on the basis of keeping an original model physical mechanism, the fire spreading speed is calculated through a wind speed correction factor V cos (beta-theta) and a gradient correction factor (for example, phi cos beta is adopted in the uphill direction and phi cos (180 degrees-beta) is adopted in the downhill direction), the accuracy and dynamic visualization ability of fire scene shape simulation are remarkably improved, integration with GIS or CAD software is facilitated, and the method is suitable for popularization and application. And an efficient technical means is provided for forest fire accurate prediction, emergency decision and intelligent forestry development.

The invention discloses an air-ground cooperative greenhouse gas flux monitoring and source analysis method, which comprises the following steps of: arranging ground observation systems in the upwind direction and the downwind direction of a prevailing wind direction of a park to realize long-term continuous monitoring of greenhouse gas concentration and meteorological parameters; the method comprises the following steps: carrying out vertical section observation on emission plume under typical meteorological conditions by using an unmanned aerial vehicle, and estimating canopy scale flux based on a mass balance method; quantifying the emission flux of each sub-source in combination with ground long-term observation data and a backward Lagrange random diffusion model; and further taking the canopy scale flux estimated by the unmanned aerial vehicle as a constraint condition to correct an inversion result of the ground model so as to realize long-term accurate estimation of the park scale greenhouse gas emission flux and dynamic quantitative splitting of sub-source contribution. Based on the method, a flux monitoring result with time continuity, space consistency and source resolvability can be provided for a typical composite emission system, so that accurate emission reduction and scientific management are supported.

This invention discloses a method, device, and medium for arranging wind turbines in a wind farm area, applicable to the field of wind farm design. This arrangement method sets turbine positions on grid nodes, considering various conditions such as different prevailing wind directions, restricted areas, and multiple spacing ranges for wind turbines. While considering different prevailing wind directions, it also considers restricted areas, deleting grid nodes located within these areas. Furthermore, it adjusts the lateral or longitudinal spacing of the ellipses to draw different ellipses, deleting grid nodes within the ellipses except for the center point of the turbine placement location. This ensures a certain spacing range between wind turbines, minimizing the wake effect between them. It avoids the problem of relying on manual experience for individual arrangement, which can lead to suboptimal wake losses. This method achieves a superior wake loss reduction effect from the arrangement method.

This invention discloses an energy-saving ventilation structure and method for building design. The structure includes a main body, an exhaust component, a drive mechanism, and an adjustment mechanism. The main body includes a U-shaped shell with an open bottom. A rotating cylinder is arranged inside the opening of the U-shaped shell. A primary connecting cylinder and a secondary connecting cylinder are fixedly connected to both sides of the rotating cylinder. The primary and secondary connecting cylinders are rotatably connected to both sides of the opening of the U-shaped shell and extend into the U-shaped shell. A wind hood and a sliding chamber are also fixedly connected to the outside of the rotating cylinder. The sliding chamber is horizontally arranged. Its advantages are: the device can be driven by a drive motor or by natural wind through the wind hood. Compared with ordinary ventilation balls, it solves the problem of not being able to ventilate when there is no natural wind or the natural wind is weak. The device can adjust the orientation of the wind hood, solving the problem of wind and sand entering the building through the ventilation opening due to the ventilation opening being directly facing the prevailing wind direction for a long time.