Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

102 results about "Risk map" patented technology

Prevention and control method and prevention and control system of disease control and travel information interconnection

The invention relates to the public health technology field and discloses the prevention and control method of disease control and travel information interconnection. The method comprises the following steps of retrieving the historical data of local infected cases and the composition of environmental factors affecting the survival of a disease infection source, and fitting a grid risk map; determining a newly infected person as an infection source, and obtaining the travel information of the newly infected person in the period of time before attack; classifying and screening the travel information, excavating possible resident points, combining with spatial road network data and carrying out semantization on the possible resident points; comparing the possible resident points in step 3 with the risk map generated in step 1 to acquire a main suspicious point which is taken as a high probability occurrence point; adopting an association rule excavation algorithm or a string pattern excavation algorithm to excavate a motion pattern so as to predict a possible propagation trend; and according to the above result, intervening a high risk area. The trend of an infectious disease is predicted and prevention and control cost is reduced.
Owner:河南省疾病预防控制中心

Method for assessing crossing risk of pedestrians at intersection on basis of trajectory data

ActiveCN108230676AAccurate risk calculationRealize graded evaluationDetection of traffic movementResourcesRisk levelRisk map
The invention relates to a method for assessing the crossing risk of pedestrians at an intersection on the basis of trajectory data. The method comprises the following steps of S1, extracting conflictindexes between motor vehicles and the pedestrians on the basis of the trajectory data; S2, identifying interactive modes of the pedestrians and motor vehicles on the basis of the extracted conflictindexes, and calculating potential collision probabilities between the pedestrians and motor vehicles according to different interaction modes; S3, calculating potential collision consequences of pedestrian-vehicle interaction events according to the vehicle types and vehicle speeds of the motor vehicles; S4, combining the collision probabilities with the potential collision consequences to createa risk assessment model; S5, according to a pedestrian crossing risk degree on each time and space calculation unit in the risk assessment model, obtaining a risk degree matrix and drawing a pedestrian crossing risk map according to the risk degree matrix; S6, combining an average pedestrian crossing risk degree in the risk assessment model with a subjective risk standard, dividing pedestrian crossing risk levels and conducting risk assessment. Compared with the prior art, the method has the advantages of comprehensive and accurate assessment and the like.
Owner:TONGJI UNIV

Intelligent vehicle safety situation assessment method considering multi-vehicle interaction

The invention discloses an intelligent vehicle safety situation assessment method considering multi-vehicle interaction. The method comprises the following steps:1, establishing an intention recognition module through a long-short-term memory network; 2, defining logic judgment based on probability maximum classification through the intention recognition module according to the historical track information of the vehicle, and calculating the driving intention probability of the surrounding vehicles of the predicted vehicle; 3, outputting a potential risk by adopting a risk assessment module based on a driving safety field through analyzing the interaction among the driver, the vehicle and the road; 4, establishing a comprehensive situation evaluation model in combination with the driving intentions, calculated by the risk evaluation module and the intention recognition module, of the surrounding vehicles of the predicted vehicle, and outputting a dynamic potential risk map consideringmulti-vehicle interaction in a dynamic traffic scene through the comprehensive situation evaluation model; according to the invention, the dynamic potential risk map considering multi-vehicle interaction can be output, and the calculated risk map allows the intelligent vehicle to evaluate the driving state of the intelligent vehicle by using the real-time risk value so as to perform early warningand take appropriate measures.
Owner:TSINGHUA UNIV

Flood control decision support method, electronic equipment, storage medium and system

The invention relates to a flood control decision support method and a flood control decision support system. A flood forecasting model integrates forecasting of rainfall space-time distribution, runoff generation and confluence calculation, tide level forecasting, river water power calculation and floodplain processing, a modern flood control perception system is combined with the flood forecasting model, a multi-scenario dynamic simulation method is constructed to improve the timeliness and accuracy for prejudgment and forecasting of flood, real-time drawing of a flood risk map, flood influence analysis, flood situation analysis and flood scheme comparison functions are provided, flood information is delivered through multiple channels, and the support is provided for the flood control decision. The invention also relates to electronic equipment and a computer-readable storage medium. A computer program executes the flood control decision support method through a processor; compared with the conventional hydraulic attention object, six types of urban flood risk objects including residence of residents, public transport, basic guarantee, important places, dangerous objects and easily affected representative points are further constructed, a flood risk analysis result is closely related to the actual demand of urban flood control and the socialization attribute of the flood risk prejudgment and forecasting result is improved.
Owner:宁波市水利水电规划设计研究院有限公司

Ship collision early warning system based on unmanned aerial vehicle

The invention discloses a ship collision early warning system based on an unmanned aerial vehicle. The system includes an unmanned aerial vehicle on which a monitoring device for collecting ship navigation data is carried, the navigation data including historical tracks and speed; a movement predictor used for predicting the position and moving direction of a ship at a next moment according to thehistorical track, speed, current position and target position to which the ship is steered of the object ship, and generating a predicted track of the ship after unit time on a two-dimensional plane;a risk range generator used for generating a risk map according to the ship speed and the predicted track, the risk map representing a possible range in which the object ship possibly is after unit time and a degree of risk under a condition that other ships enter the range; and a risk analysis module used for judging the possibility of occurrence of a collision according to the crossed overlapping situation of the risk maps of different object ships. The ship collision early warning system based on an unmanned aerial vehicle is used for performing early warning about a collision of ships andreducing the possibility of occurrence of a collision in a ship-dense water area such as a port.
Owner:WUHAN UNIV OF TECH

Refined diagnosis method for urban agglomeration area flood risk zoning

The invention discloses a refined diagnosis method for urban agglomeration area flood risk zoning. The method comprises the following steps of using a GIS spatial data analysis function to carry out data rasterization and standardization processing on each index; constructing a judgment matrix corresponding to the index system; calculating the relative weight of each index and the flood risk degree of different grid units so that establishment of an urban agglomeration area flood risk degree evaluation model based on a fuzzy analytic hierarchy process and drawing of a flood risk map are realized. From the perspectives of rainstorm distribution characteristics, historical flood distribution characteristics, rainstorm ponding risk distribution characteristics of all cities and the like, theflood risk distribution characteristics of urban agglomeration areas are systematically diagnosed in an omnibearing and multi-angle mode. The flood risk degrees and risk levels of different dangerousareas are accurately calculated, a multi-index problem is scientifically and objectively synthesized into a single-index form, a single index capable of effectively measuring the flood risk degree isconstructed, and a reliable technical support means is provided for flood dangerous area division.
Owner:TIANJIN UNIV

Geological disaster risk comprehensive evaluation method and device considering spatial distribution characteristics

The invention discloses a geological disaster risk comprehensive evaluation method considering spatial distribution characteristics. Comprising the following steps: aiming at spatial aggregation and dispersion characteristics of historical geological disaster points, respectively proposing a data preprocessing method which uses a clustering algorithm to extract regional clustering attributes as evaluation indexes and is based on a fishing net grid; constructing a model based on a multi-machine learning algorithm of logistic regression (LR), a support vector machine (SVM), a gradient boosting tree (GBDT) and a random forest (RF); determining an optimal model by comparing the model prediction precision with the map evaluation effect, and drawing a dangerous map; meanwhile, providing an experimental scheme for testing the technical reliability. According to the method, the model evaluation precision can be remarkably improved, the model evaluation performance can be enhanced, and the geological disaster risk map with more accurate prediction and better quality can be generated, so that a decision basis conforming to the actual situation is provided for disaster risk prevention and control planning work.
Owner:BEIJING NORMAL UNIVERSITY

Bursaphelenchus xylophilus invasion risk prediction method based on ecological niche factor model

The invention belongs to the technical field of bursaphelenchus xylophilus invasion risk prediction, and discloses a bursaphelenchus xylophilus invasion risk prediction method based on an ecological niche factor model, and the method comprises the steps: obtaining distribution point data and environment data of an epidemic area of bursaphelenchus xylophilus; performing Kriging interpolation processing on the climate data, calculating the gradient and the slope direction in the topographic data, and obtaining vegetation types and human activity interference data; importing the distribution point data and various environmental data into an ecological niche factor model, and calculating pine wood nematode disease risk early warning; and evaluating the pine wood nematode disease invasion riskbased on the feature matrix and the risk map obtained by calculation. According to the invention, main environmental influence factors influencing pine wood nematode propagation are used; the method is suitable for local conditions, lays a foundation for early warning, monitoring and control work of pine wood nematode diseases and insect pests, provides a scientific basis for measures of forest biodiversity protection and ecological environment protection, and provides a basis and a reference for early warning and control work of forest diseases and insect pests.
Owner:YANGTZE UNIVERSITY

Flood risk dynamic display and analysis system

ActiveCN109933637ASolve technical problems with long cycle and lack of timelinessImprove timelinessGeographical information databasesSpecial data processing applicationsAnalytic modelReal time analysis
The invention provides a flood risk dynamic display and analysis system, which relates to the technical field of disaster monitoring, and comprises a data acquisition module for acquiring water and rain condition data of a to-be-monitored area and counting accumulated water and rain condition data of the to-be-monitored area within a preset time; a data analysis module used for inputting the boundary condition set by the user and the accumulated water and rainfall condition data into a real-time analysis model under the condition that the accumulated water and rainfall condition data is greater than a preset threshold value to obtain a flood propulsion evolution process in the to-be-monitored area; a risk map drawing module used for drawing a flood propulsion evolution process and risk index data on a water conservancy base map based on a geographic information system to obtain a flood risk map; and a disaster damage analysis module used for generating a disaster analysis report basedon the flood risk map, the inundation area economic information and the flood influence analysis index, and solving the technical problems that in the prior art, professional personnel are needed to participate in drawing the flood risk map and analyzing the flood risk, so that the manufacturing period is long, and timeliness is lacked.
Owner:BEIJING AEROSPACE HONGTU INFORMATION TECH

Three-dimensional landslide motion risk probability evaluation method

The invention discloses a three-dimensional landslide motion risk probability evaluation method, and relates to the technical field of landslide motion risk prediction. According to the method, a dynamic numerical model is used for landslide motion analysis, the final accumulation depth serves as observation information, the uncertainty of input parameters of the dynamic numerical model is calibrated through a multi-observation Bayesian inverse analysis method based on MCMC simulation, and posterior distribution is obtained. Then, the posterior distribution is used as the input of the potential landslide to estimate the override probability of the maximum motion height and the maximum motion speed of the potential landslide on the three-dimensional terrain, and a probabilistic motion risk map for quantitative risk evaluation of the individual landslide is generated. According to the method, the multi-response global Kriging agent model is adopted to approximate the relationship between the input and output of the model, so that the multi-response global Kriging agent model completely replaces a dynamic numerical model to carry out Bayesian back analysis and probability motion risk assessment, and the calculation efficiency is greatly improved on the premise that the precision is not lost.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products