8 results about "Source area" patented technology

The invention provides a heat preservation box capable of rapidly replacing a cold source. The heat preservation box comprises a box body and cold storage plates; the box body is provided with a box door, a cold storage area, a control area and a cold source area are arranged in the box body, the cold storage area is separated from the control area and the cold source area through a middle partition board, and the control area and the cold source area are separated through a side partition board; a backflow partition board is arranged in the cold source area, the cold source area is divided into a cold source cavity and a backflow cavity through the backflow partition plate, the cold source cavity communicates with the lower portion of the backflow cavity, a plurality layers of cold sourceframes used for containing the cold storage plates are arranged in the cold source cavity, and the cold source cavity communicates with the cold storage area through an air inlet channel; an exhaustfan is arranged on the air inlet channel, the cold storage area communicates with the backflow cavity through a backflow channel, and an air blower is arranged on the backflow channel; a control module is arranged in the control area, a first temperature sensor is arranged in the cold storage area, the exhaust fan, the air blower, and the first temperature sensor are electrically connected with the control module; and box body, the middle partition plate and the side partition plate are all made of vacuum composite plates. According to the heat preservation box, the replacement efficiency of the cold source is improved.

The invention discloses a GIS-based pollution prevention and control management method and system, and belongs to the technical field of pollution management, and the method comprises the steps: collecting the wind power information at a plurality of time points and the actual concentration value of pollutants based on a detection sensor; measuring points with actual concentration values exceeding a first threshold value are determined and defined as pollution points, corresponding time points are defined as first time points, and a first sequence of actual pollutant concentration values and a second sequence of wind power information are collected and constructed by taking the first time points as starting points; the pollution points where the same pollutants are detected are defined as first correlation points, and first topographic data between the first correlation points are obtained based on the GIS data; performing pollution correlation analysis on the first correlation point based on the first topographic data, the first sequence and the second sequence, and extracting a second correlation point from the first correlation point; and analyzing the second association point by using a traceability model, and determining a pollution source area. According to the invention, the pollution source area generating pollution can be rapidly and accurately positioned.

The application discloses a kind of agricultural non-point source pollution prediction and tracing method, it is related to agricultural monitoring technical field, to gravity standard triangulation network as skeleton, time-lapse gravity residual is converted to grid virtual deformation, and determines edge level priority channel and convergence / divergence;In the same edge-node space coupling water / soil / air and cross-phase parameter.Adopt programmable expert sequence aggregation: gravity deformation, three-phase flow field, interannual variation, microbial community memory index, groundwater lag and observation consistency, and by forecast hook, rainfall, wind, temperature is mapped as parameter increment, and rolling update.Method is carried out mass conservation and threshold rejection at edge level, output main diffusion ridge line, sensitive section p10 / p50 / p90 arrival time and source area contribution rate, realize the explainable prediction, verification and accurate tracing of non-point source pollution.

This invention discloses a method for screening ecological source areas in densely populated urban areas that couples multiple factors with planning overlays. Belonging to the field of urban ecological planning, the method includes the following steps: screening of dual indicator species and construction of differentiated resistance surfaces; habitat suitability assessment and preliminary extraction of potential source areas; minimum cost path simulation under cost constraints; functional connectivity importance evaluation based on graph theory; three-factor coupled screening and source area classification; and verification and application feedback of overlay with statutory planning. This invention, a method for screening ecological source areas in densely populated urban areas that couples multiple factors with planning overlays, comprehensively evaluates the ecological value of patches from three dimensions: internal patch attributes, external migration resistance, and their connecting role in the network. This significantly improves the scientific rigor and comprehensiveness of source area screening, directly identifying ecological source areas covered, omitted, or requiring improvement under planning, providing clear and operable technical support for planning revision, implementation, and daily ecological management.

The application discloses a laboratory intelligent layout optimization method and system for a multi-energy experiment building, and relates to the technical field of auxiliary layout optimization. The method comprises the following steps: S1, collecting space energy flow data and performing data preprocessing; S2, identifying the pollution source influence intensity in the experiment area, judging the leakage trend and retention tendency, and extracting the energy flow coupling relationship between regions; S3, evaluating the minimum exhaust boundary required by the experiment area, and performing dynamic correction on adjacent regions; S4, mapping the exhaust volume to the fan operating frequency and the end valve opening degree, and optimizing the equipment selection, pipe diameter ratio and end arrangement; S5, constructing a candidate layout generation and integrated evaluation mechanism, screening and obtaining an optimization scheme, and writing back to the BIM model. The problems of gas retention, energy waste and inability to dynamically respond to the operating state under the cross ventilation path due to the difficulty of traditional ventilation design to adapt to the differentiated working conditions of multi-energy regions are solved.

This invention relates to a method for constructing an urban green space ecological network based on an ecological security pattern. The method involves acquiring spatial distribution data of existing green space patches in a target urban area, extracting candidate urban ecological source areas, and then screening to obtain important urban ecological source areas. It combines existing land use types with other resistance factors to construct a comprehensive resistance surface. Based on important ecological source areas and the comprehensive resistance surface, a minimum cumulative resistance model is used to simulate the minimum cumulative resistance path and suitable path spatial range of potential ecological corridors. Based on circuit theory, the minimum cumulative resistance path is classified, and effective corridors are determined according to the level, with their suitable path spatial ranges extracted. Supplementary ecological nodes are identified. The suitable path spatial ranges of important ecological source areas, effective corridors, and supplementary ecological nodes are superimposed to form an urban green space ecological network. This invention provides a basis for the formulation and implementation of relevant plans, effectively improving the ecological service efficiency of green spaces, maintaining urban ecological balance, and improving the urban living environment.

This invention relates to a method for determining the width of urban ecological corridors relying on rivers and roads, comprising: acquiring and preprocessing geographic information data of a target area; constructing an ecological source area screening index system to identify ecological source areas; constructing a comprehensive resistance surface; determining potential corridor paths between any two ecological source areas; identifying current density maps of areas in potential corridor paths that play an important role in animal migration; overlaying river and road layer data with the current density map, extracting a buffer zone with a width of 100m and calculating the average current density to obtain a buffer zone layer with current information; presetting a minimum width, dividing the buffer zone into several levels according to the average current density, extracting the corridors corresponding to the buffer zones, and then assigning each corridor a minimum width corresponding to its level according to the preset value. This invention determines the width levels of urban corridors based on current density, which helps to determine the width range of urban ecological corridors relying on rivers and roads.

The invention discloses a laboratory intelligent layout optimization method and system for a multi-energy experimental building, and relates to the technical field of auxiliary layout optimization. Comprising the following steps: S1, collecting space energy flow data, and carrying out data preprocessing; s2, identifying pollution source influence intensity in the experimental area, judging a leakage trend and a retention trend, and extracting an energy flow coupling relationship between the areas; s3, evaluating the minimum exhaust boundary required by the experimental area, and performing dynamic correction on the adjacent area; s4, the exhaust air rate is mapped into the fan operation frequency and the tail end valve opening degree, and optimization judgment is conducted on equipment model selection, the pipe diameter proportion and tail end arrangement; and S5, constructing a candidate layout generation and integration evaluation mechanism, screening and obtaining an optimization scheme, and writing the optimization scheme back to the BIM model. The problems that due to the fact that traditional ventilation design is difficult to adapt to the differentiated working conditions of multiple energy areas, gas detention and energy waste are caused under ventilation path crossing, and dynamic response cannot be achieved along with the running state are solved.