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121 results about "Natural hazard" patented technology
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A natural hazard is a natural phenomenon that might have a negative effect on humans or the environment. Natural hazard events can be classified into two broad categories: geophysical and biological. An example of the distinction between a natural hazard and a natural disaster is that the 1906 San Francisco earthquake was a disaster, whereas living on a fault line is a hazard. Some natural hazards can be provoked or affected by anthropogenic processes (e.g. land-use change, drainage and construction).
Remote Sensing Analysis of Forest Disturbances
ActiveUS20090214084A1Easy to monitorImage analysisColor signal processing circuitsSatellite dataImage resolution
The present invention provides systems and methods to automatically analyze Landsat satellite data of forests. The present invention can easily be used to monitor any type of forest disturbance such as from selective logging, agriculture, cattle ranching, natural hazards (fire, wind events, storms), etc. The present invention provides a large-scale, high-resolution, automated remote sensing analysis of such disturbances.
Owner:CARNEGIE INSTITUTION OF WASHINGTON
Decision-making and command all-in-one machine based on digital schema and operation method of all-in-one machine
InactiveCN104463759AImprove command efficiencyFully dispatched and commandedData processing applicationsPublic healthUnexpected events
The invention relates to the technical field of comprehensive emergency management, in particular to a decision-making and command all-in-one machine based on a digital predetermined plane and an operation method of the all-in-one machine. The all-in-one machine comprises a basic platform layer, a predetermining plane layer, a service application layer and a user layer in the aspect of architecture and adopts the design combining an application system and a hardware platform as a whole, can cope with natural hazards, accidents, disasters, public security, social security and various emergencies, and meets core requirements for analysis, judgment, decision making, scheduling, commanding and emergency management of public security emergency management. By means of integral design of the decision-making function and the command function and the all-in-one architecture combining practical auxiliary decision making of seven decision-making support technologies, the application system and the hardware platform, investment is little, implementation is easy, effects are fast, and professionalization is achieved. The all-in-one machine can be used for an intelligent emergency decision making and command scheduling system.
Owner:CLOUD COMPUTING CENT CHINESE ACADEMY OF SCI
Method for evaluating ice resistance of tower-wire coupled system of overhead transmission line
InactiveCN102663215AGuarantee authenticityReduce workloadOverhead installationSpecial data processing applicationsElement modelEngineering
The invention relates to a method for evaluating ice resistance of a tower-wire coupled system of an overhead transmission line, which belongs to the technical field of natural disaster prevention of the overhead transmission line. The method comprises the steps of selecting a micro terrain section which is easy to have ice coating in the overhead circuit by utilizing a computer through a program, establishing a finite element model of the tower-wire coupled system, calculating a weak link and the ice resistance of the tower-wire coupled system under the effect of uniform ice coating and wind load, carrying out non-uniform ice coating load correction for the micro terrain section where the ice coating is easy to occur, and determining the weak link and the ice resistance of the tower-wire coupled system. The method has characteristics that the workload is small, the authenticity is high, the precision is high, reliable evidence can be provided for the ice coating disaster early-warning grade and the early-warning threshold value of the overhead transmission line so as to take de-icing measures in time, the ice coating disaster can be effectively prevented, and the safe and reliable running of the overhead transmission line can be ensured. The method can be widely applied to the evaluation of the ice resistance of the tower-wire coupled system of the overhead transmission line.
Owner:CHONGQING UNIV
Integrated hazard mapping system
InactiveUS20120311416A1Instruments for road network navigationCathode-ray tube indicatorsGeographic siteGeolocation
Systems, methods, and apparatus are disclosed for providing natural hazard information associated with a piece of property. In one aspect, a method is provided for providing natural hazard data. The method includes receiving geographic location information associated with a property. The method further includes retrieving natural hazard information associated with the geographic location of the property. The method further includes generating data based on the natural hazard information associated with the geographic location of the property for displaying on a computing device. The method further includes transferring the generated data to the computing device. Other aspects, embodiments, and features are also claimed and described.
Owner:RICHTER HANNES +1
Power Reserve Based on Predicted Natural Calamity
InactiveUS20170075407A1Reduce battery consumptionPower managementPower supply for data processingPower usageEngineering
An approach is provided for managing power usage in a mobile device upon predicting a natural calamity. The approach calculates a total power requirement and a next possible recharge time of the mobile device based on the predicted natural calamity characteristics. The approach further restricts one or more services on the mobile devices to reduce battery consumption by the mobile device. The restriction of services on the mobile device being based on the calculated total power requirement and the next possible recharge time.
Owner:DOORDASH INC
Remote sensing analysis of forest disturbances
ActiveUS8189877B2Easy to monitorImage analysisColor signal processing circuitsSatellite dataSoil science
Owner:CARNEGIE INSTITUTION OF WASHINGTON
Cultivation method for imitating wild dendrodium
ActiveCN105052523AImprove qualityHigh medicinal valueCultivating equipmentsPlant cultivationEcological environmentGreenhouse
The invention discloses a cultivation method for imitating wild dendrodium and belongs to the technical field of dendrodium cultivation. The cultivation method comprises the following steps that at first, the wild dendrodium is transplanted to carry out seed cultivation, then cultivated seeds are cultivated into seedlings in a tissue culture chamber, the seedlings are cultivated into seed seedlings in a greenhouse, and finally the seed seedlings are cultivated and harvested again in the field. According to the cultivation method, the growth cycle of imitating the wild dendrodium is prolonged and can reach 10-15 years, the harvesting year is prolonged, and economic benefits are increased. The dendrodium cultivated through the cultivation method is excellent in quality, high in medicinal value, and high in disease and pest injury resistant and natural hazard resistant ability, the ecological environment is protected, and water and soil loss is reduced.
Owner:YINGSHAN ZONGKUN DENDROBIUM TECH DEV CO LTD
Ecological agricultural management system
InactiveCN105807826AImprove qualityImprove safety and reliabilitySimultaneous control of multiple variablesCloud data managementAgricultural engineering
The invention discloses an ecological agricultural management system which has the functions of constant pressure monitoring and control, water level monitoring and control, fertilizer monitoring and control, irrigation monitoring and control, wireless valve control monitoring and control, voice promoting, prepayment monitoring, internet of things communication, water quality monitoring, shading illumination monitoring and control, humidity ventilation monitoring and control, temperature monitoring and control, video capture, soil entropy monitoring, plant disease and insect pest monitoring, product trace management, meteorological monitoring, cloud data management, application program visual management.The system can record the agricultural product variety, growth environment and growth process all the way, improve agricultural production automation degree, and reduce inconsistency caused by human factors in the agricultural production process, the quality of agricultural products is improved, various natural hazards are effectively avoided, a user can know the production process and related data of agricultural products immediately, and the increment space of agricultural products is enlarged.
Owner:SHENZHEN ANTAI YUSHENG TECH CO LTD
System and methods for early warning of natural and man-made disasters
An apparatus and methods for early warning of natural and man-made disasters. The apparatus is connected through the Internet to a provider of disaster warning information. A user of the apparatus determines the geographic location where the apparatus will be operated and subscribes to one or more alerting channels for that geographic location, e.g., via a cloud-based interface. Depending on the nature of the disaster and the distance from the origin of the disaster, alerts may be generated before the effects are noticed local to the device. The user can set thresholds for alert severity, and, via audible and / or visual alerts.
Owner:RGT UNIV OF CALIFORNIA
Protection against natural dangers connected with huge streams mainly water, mud, locust
InactiveUS20120175427A1Improve protectionFog dispersionWeather influencing devicesCo2 absorptionStratosphere
A method and system for protection against natural temperature-dependent dangerous phenomena connected with huge streams mainly water, mud, locust. The method allows weakening these streams and allows protecting against these dangers at least at of the first two stages of development of said phenomena: forming these masses and their moving, as far as possible. The method allows protecting ecology and increasing CO2 absorption. The system allows also transporting the electrical energy that is received from solar radiation with help of solar cells flying in stratosphere to ground-based reception stations.
Owner:FELDMAN BORIS +2
Method for cultivating paddy rice in lodging resistance way
The invention discloses a method for cultivating paddy rice in a lodging resistance way, comprising the following steps of (1) selecting a lodging resistance variety; (2) implementing row-expanding transplant and rational sparse planting; (3) rationally irrigating to keep the alternate dry or wet status of a paddy field; (4) rationally applying fertilizer to optimize nitrogen fertilizer management; (5) enhancing control on plant diseases and insect pests, i.e. enhancing control on rice planthopper, banded sclerotial blight, rice joint blast and chilo suppressalis; (6) after the occurrence of lodging, timely adopting remedial measures, i.e. timely ditching for water discharge, implementing the foliage top dressing of foliar fertilizer, and bunching and strengthening after lodging. By the adoption of the method for cultivating the paddy rice in the lodging resistance way, as the resistance against external environmental conditions is enhanced, the lodging resistance capability of the paddy rice can be improved; after suffering natural hazards such as typhoon and rainstorm, the paddy rice grows well; therefore, available spikes are increased by 10.2%, total grains are increased by 10.2%, and filled grains are increased by 10.5%; the maturing rate is increased by 10.3%, the thousand grain weight is increased by 10.1%, the theoretical yield is increased by 10.9% and the actual yield is increased by 10.9%; in addition, the rice grains are excellent in quality, the cooked rice is tasted good, and the economic benefits are obvious.
Owner:句容市植保植检站
Method for reconstructing vertical rainfall field based on satellite-ground link scanning
ActiveCN110850510AHigh precisionHigh spatio-temporal resolutionRainfall/precipitation gaugesComplex mathematical operationsAtmospheric sciencesNatural hazard
The invention provides a method for reconstructing a vertical rainfall field based on satellite-ground link scanning, and the method comprises the steps: building a plurality of satellite signal receiving ends to receive polar orbit satellite signals, and forming a plurality of satellite-ground links; meshing a vertical region to be reconstructed; obtaining the spatial distribution of attenuationcoefficients by analyzing the relation among satellite-ground link signal strength information, rainfall attenuation coefficients and satellite-ground link lengths, performing the inversion of the spatial distribution of rainfall according to a relation model of the attenuation coefficients and the rainfall strength, and generating rainfall information in a vertical space; and finally, reconstructing the vertical rainfall field by combining with a detection area. The method not only makes up the defects of the traditional means for detecting the vertical rainfall field, but also has the advantages of high temporal-spatial resolution, low cost and the like, and provides important data support and guarantee for water resource management, agricultural development, natural disaster early warning and the like.
Owner:NAT UNIV OF DEFENSE TECH
Method and system for detecting three-dimensional rainfall field by three-dimensional satellite-ground link dense net
ActiveCN110766795AWide coverageHigh time continuityGeographical information databasesComplex mathematical operationsSatellite antennasGround station
The invention provides a method and system for detecting a three-dimensional rainfall field through a three-dimensional satellite-ground link dense net. According to the method, multiple ground stations-multiple star sources are utilized to form a three-dimensional satellite-ground link dense network to detect three-dimensional rainfall field distribution: a plurality of existing or erected satellite antennas are utilized to form a ground observation network, a plurality of satellite signals are received, and a plurality of satellite-ground links form a dense three-dimensional network; the spatial distribution of attenuation coefficients is obtained by analyzing the relationship among satellite-ground link signal intensity information, rainfall attenuation coefficients and satellite-groundlink lengths, the spatial distribution of rainfall is inversed according to a relationship model of the attenuation coefficients and rainfall intensity, and the spatial distribution is combined witha GIS map to complete reconstruction, visualization and dynamic display of a three-dimensional rainfall field.Reconstruction of the three-dimensional rainfall field is completed through the satellite-ground link network, accurate, large-range and high-resolution rainfall data can be provided, and key data is provided for water resource management, agricultural development, urban inland inundationmonitoring, natural disaster early warning and the like.
Owner:NAT UNIV OF DEFENSE TECH
Apple bag with two jointed hemispherical surfaces
InactiveCN102668937AImprove labor productivityFast baggingPlant protective coveringsEngineeringNatural hazard
The invention relates to an apple bag with two jointed hemispherical surfaces, characterized in that an air vent and an apple steam clamping hole are arranged on each hemispherical plastic body. The two hemispherical plastic bodies are jointed into a whole via a hemispherical plastic body jointing line. Magnetic rubber surfaces on the hemispherical plastic bodies are mutually closely attracted together under the magnetic action. the material of the apple bag with two jointed hemispherical surfaces must be very light hard composite plastic; once made, the apple bag can be used for many years, generally four to five years, and can be recovered and repeatedly produced after being outworn. The apple bag with two jointed hemispherical surfaces made of the hard composite plastic can effectively prevent hail from damaging apples, and reduce the damage degree of natural hazard. Bagging speed is greatly increased, thus increasing production efficiency; and through calculation, the bagging speed of common apple bags is 12 seconds per apple, and the bagging speed of the apple bags disclosed by the invention is 1 second per apple, so the labour production efficiency is increased by 12 folds.
Owner:苟小平
Coastal area wind prevention security power grid frame construction method based on graph theory algorithm
ActiveCN104123679AImprove backbone supportGuaranteed power supplyData processing applicationsInformation technology support systemPower gridMathematical Graph
Disclosed is a coastal area wind prevention security power grid frame construction method based on a graph theory algorithm. The coastal area wind prevention security power grid frame construction method based on the graph theory algorithm includes: using a graph theory path search algorithm to identify power grid frame topology structures of 220KV and above for current and planned power grids, obtaining important degrees of each station and each circuit in topology for normal running and rapid power restoration, and forming a core backbone grid frame of 220V and above in a regional power grid; simultaneously, combing an important user power supply route, selecting a key station and a key circuit which supply power for important users according to a distribution situation and differentiation of the important users, and forming an important user security power supply radiation type fishbone grid frame; then, selecting a contact circuit of a center urban area and an outer area according to grid frame security requirements; finally, organically combining the core backbone grid frame, the radiation type fishbone grid frame and the contact circuit of the center urban area and the outer area so as to construct a coastal area wind prevention security power grid frame. The coastal area wind prevention security power grid frame construction method based on the graph theory algorithm can effectively improve the ability of the regional power grid of withstanding intrusion of natural hazards of typhoons and the like, guaranteeing the important users and supplying power for areas.
Owner:GRID POWER PLANNING & RES CENT OF GUANGDONG GRID POWER CO LTD +1
Natural disaster early warning system and method
InactiveCN112016772ALower performance requirementsExpandable storage capacityForecastingCharacter and pattern recognitionData setImage manipulation
The invention discloses a natural disaster early warning system. The natural disaster early warning system comprises an information acquisition unit, an image processing unit, a prediction model establishing unit, a disaster prediction unit and an early warning unit. According to the invention, a machine learning method is adopted to train disaster sample data in a sample data set formed by quantizing scene image information shot by a camera and natural state information detected by a sensor; detection is performed according to the evaluation indexes to obtain an optimal disaster prediction model; disaster prediction can be carried out on a scene transmitted by the information acquisition unit in real time in the disaster prediction model; a distributed data processing system constructed by a plurality of servers and computing hosts is adopted in the prediction model establishing unit to train the sample data, and the distributed system performs parallel training on the sample data, sothat the efficiency is effectively improved.
Owner:成都中轨轨道设备有限公司
Reinforced concrete frame beam structure
InactiveCN104594558AEfficient formationImplementation of energy consumption mechanismGirdersJoistsEngineeringRebar
The invention discloses a reinforced concrete frame beam structure. The reinforced concrete frame beam structure comprises stand columns, reinforcing steel bar assemblies and enhancing structures, wherein the reinforcing steel bar assemblies are arranged between two adjacent stand columns, deformation structures are configured on the reinforcing steel bar assemblies, the deformation structures are located at or near to the minimum bending moment of the reinforced concrete frame beam structure under the vertical load; the enhancing structures are at least arranged at the deformation structures. According to the reinforced concrete frame beam structure, the plastic hinge can be effectively formed while having natural hazard as earthquake due to the fact that the deformation structures and the enhancing structures are adopted, and the energy-consuming mechanism of strong column and weak beam is achieved.
Owner:TSINGHUA UNIV
Method for detecting glacial ablation based on tracer technique
InactiveCN106323374AAccurate ablation speedImprove accuracyGeomodellingGeological measurementsSea level riseNatural hazard
Owner:CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
Near-seabed hydrate reservoir modeling method and device
The invention discloses a near-seabed hydrate reservoir modeling method and device, and the method comprises the steps: building a geological model of a hydrate reservoir according to actually measured seismic data; constructing a geophysical model of the hydrate reservoir according to the actually measured seismic data and logging data; combining the geological model with the geophysical model toobtain a geological-geophysical model of the hydrate reservoir; acquiring a rock-soil mechanical parameter of the hydrate reservoir; and assigning the rock-soil mechanical parameter of the hydrate reservoir to the geological-geophysical model of the hydrate reservoir to obtain a three-dimensional model of the near-seabed hydrate reservoir. The invention provides a multi-parameter constrained high-precision near-seabed stratum model. Horizon and geologic structure information obtained through seismic inversion can be reflected, the rock-soil mechanical property and the safe and stable condition of the model can also be reflected, and a foundation is laid for subsequent exploitation of natural gas hydrates and risk assessment of seabed natural disasters.
Owner:BC P INC CHINA NAT PETROLEUM CORP +1
Ecological gabion arrangement method
InactiveCN106759397AIncrease costSoil erosionExcavationsMarine site engineeringEngineeringCut and fill
The invention discloses an ecological gabion arrangement method. The ecological gabion arrangement method comprises the following steps that bottom foundation arrangement is carried out; bottom gabion arranging arrangement is carried out; bottom gabion body arrangement is carried out; packing is carried out, wherein after all bottom gabions are arranged, bottom gabion bodies are filled with building stones, multiple times of packing are adopted during packing, the layer height of packing each time is not larger than 30 cm till the bottom gabion bodies are full of the building stones, the top filling building stones are higher than the gabion bodies, then manual or mechanical building and leveling are carried out, and the filling building stones are in lap joint; upper gabion arrangement is carried out; spaced soil filling and scattered riprap filling and throwing are carried out, filled soil is compacted in layers, the thickness of each layer of filled soil is 20 cm, scattered riprap behind a wall must be subjected to throwing and filling in layers, and the thickness of each layer is 30 cm; and 10-15 cm of humus is laid at the top end of a gabion wall in a filling manner. According to the ecological gabion arrangement method, rampway water and soil losses can be effectively avoided, arrangement is convenient, the service life is long, the ecological gabion arrangement method can be suitable for quite extreme regions, and meanwhile damage in natural hazards is not prone to happening.
Owner:SUZHOU IND PARK LANDSCAPING ENG CO LTD
Diesel power generating set multifunctional mobile emergency engineering vehicle
InactiveCN102390312APrecise positioningEasy to manageItem transportation vehiclesChemical industryElectric power system
The invention discloses a diesel power generating set multifunctional mobile emergency engineering vehicle, which comprises a vehicle body and a container on the vehicle body, wherein the container is divided into a front area, a rear area, an upper area and a lower area, a diesel power generating set is arranged inside the upper area, an oil tank of the diesel power generating set is arranged below the diesel power generating set, and a muffler of the diesel power generating set is arranged above the diesel power generating set; a group of accommodating boxes are arranged in the lower area, and an extension cable and a standby cable of the diesel power generating set are arranged in the accommodating box of the lower area to be close to the rear area; a group of equipment boxes for storing extinguishers is arranged in the front area; and a power distribution box which is electrically connected with the diesel power generating set is arranged in the rear area. The diesel power generating set multifunctional mobile emergency engineering vehicle has the advantages that: the function is complete, and the emergency requirements of the industries such as natural hazard, firefighting, chemical industry, petroleum, natural gas, electric power, communication, building, machinery manufacturing and the like can be simultaneously satisfied.
Owner:重庆全冠机电设备制造有限公司
Mine natural disaster hazard source risk prevention mechanism management system and method
PendingCN112488469ADisaster loss reductionDesign optimisation/simulationResourcesRisk preventionEnvironmental resource management
The invention belongs to the technical field of mine natural disaster information management, and discloses a mine natural disaster hazard source risk prevention mechanism management system and method. The mine natural disaster hazard source risk prevention mechanism management system comprises a physical model dynamic evolution module, a tailing pond dam break quantitative analysis module, a tailing pond dam break fault model building module and a tailing pond hazard source identification and evaluation module. The sharp mountain phosphate rock high and steep slope, the Kunyang phosphate rockdump and the seamouth phosphate rock cavern beach tailing dam are taken as research objects, major accident potentials of the tailing dam are identified and subjected to risk evaluation, and possiblefailure modes, disaster-causing mechanisms and dynamic evolution processes of main geological disasters such as the tailing dam can be revealed; a reasonable and effective disaster treatment measureand a prediction and forecast system are provided, scientific prevention of disasters is achieved, disaster losses are reduced to the minimum, reliable technical guarantee is provided for safe miningof surface mines, and reference is provided for similar mines.
Owner:SINOSTEEL MAANSHAN INST OF MINING RES
Agricultural drought monitoring method based on meteorological time lag caused by soil moisture
ActiveCN113095621AApplicable to agricultural drought monitoringStrengthen the formulationClimate change adaptationResourcesSoil scienceCorrelation analysis
The invention relates to an agricultural drought monitoring method based on soil moisture to meteorological time lag. The method comprises the following steps: preparing data of a research area, calculating evapotranspiration data by using a Penman's formula, carrying out rainfall and evapotranspiration interpolation and vegetation health index resampling, and ensuring that monthly mean value data in the research area have the same spatial resolution; estimating the delay time of the soil moisture to rainfall and evapotranspiration by means of a cross wavelet analysis method; calculating the relative values of rainfall, evapotranspiration and soil moisture relative to the historical overall level in sequence, and calculating the agricultural drought index of the research area in combination with the time lag condition. Correlation analysis is carried out on the drought index obtained by the method and a traditional drought index, and the reliability of the method is proved in the aspects of time, space and crop drought areas. According to the method, the brand new agricultural drought index is constructed, so that more accurate agricultural drought identification, monitoring and disaster loss evaluation are realized, and an important scientific basis can be provided for natural disaster monitoring evaluation and disaster prevention and reduction decision making.
Owner:WUHAN UNIV
Anti-seismic and anti-collapse power switch cabinet
InactiveCN111525409AFast fallTo achieve the effect of shock absorptionSubstation/switching arrangement cooling/ventilationSubstation/switching arrangement casingsClassical mechanicsNatural hazard
The invention provides an anti-seismic and anti-collapse power switch cabinet, which comprises a base, a supporting plate, a power cabinet, a heat conduction box and anti-seismic plates, wherein the central position of the base is hollow, ejector rods are fixedly connected to the centers of the peripheral wall faces of the hollow position of the base, the ends, away from the wall face, of the ejector rods are fixedly connected with first piston plates, a supporting block is movably connected between the ejector rods, the tops of the supporting blocks are fixedly connected with the supporting plate, the power cabinet is fixedly connected to the top center of the supporting plate, a baffle is hinged to the upper end of one side, away from the power cabinet, of the heat conduction box, telescopic assemblies are fixedly connected in front of and behind the lower end of the side, away from the power cabinet, of the heat conduction box, And one end, away from the heat conduction box, of thetelescopic assembly is movably connected with the lower end of the bottom of the baffle. In the prior art, the existing power switch cabinet generally does not have anti-seismic and anti-collapse effects, and is easy to damage when being extruded by heavy objects or encountering natural disasters, so that electrical elements in the power switch cabinet are damaged and cannot work normally. According to the invention, the anti-seismic and anti-collapse power switch cabinet is provided and solves the problem in the prior art.
Owner:张秋红
Method for producing tablecloth by virtue of waste textiles
ActiveCN105919490AAvoid damageGrowth retardationLiquid/gas/vapor removalDyeing processPolyesterCellulose
The invention discloses a method for producing tablecloth by virtue of waste textiles. The method comprises an operation of processing a piece of tablecloth, wherein the tablecloth is made from various waste textiles; the tablecloth comprises warp yarns and weft yarns; the warp yarns are polyester fibers and the weft yarns are cotton fibers, and the cross section of the warp yarns is represented as an ellipse; patterns are embroidered on the surface of the tablecloth; and the processing method comprises the following steps: A, sterilizing; B, degrading protein; C, regenerating and processing; D, scutching; E, combining; F, forming cloth and processing; and G, embroidering and finishing: embroidering a textile fabric by virtue of an embroidering machine so as to form the patterns by embroidering in one step, then soaking the textile fabric in a fermentation broth for 24h, rinsing the textile fabric with clean water, then cutting the textile fabric so as to obtain a tablecloth fabric, and seaming the tablecloth fabric, so that the tablecloth is formed, wherein the fermentation broth is a liquid which is obtained by mixing clean water, plant cellulose and blown sugar according to a weight ratio of 10 to 3 to 1 and fermenting for 6-9 months in a sealed mode. With the application of the method disclosed by the invention, the problem that existing waste textiles cause great natural hazards is solved.
Owner:梧州嘉名达纺织科技有限公司
Control system and method for mitigating the effects of natural hazards
InactiveUS20180266104A1Mitigates natural hazardImprove safety and reliability and longevity and functionalityLiquid based dampersProtective buildings/sheltersControl systemNatural hazard
An actuator includes a piston, a relief valve in fluid communication with the piston, and an input shaft for moving fluid in a chamber near the piston. The relief valve determines an amount of force needed to move the piston to compress a fluid. The actuator also includes at least one check valve which allows the input shaft to move back to an equilibrium position with a much lower force than a force needed to compress the fluid. The actuator is a passive device that can be used to prevent motion or isolate a base. The actuator is also incorporated in tuned mass damping systems.
Owner:RGT UNIV OF CALIFORNIA
Elasticity lifting method for distribution network considering micro-energy network support function
ActiveCN110401229AIncrease elasticityData processing applicationsPower network operation systems integrationThunderstormModel predictive control
The invention relates to an elasticity lifting method for the distribution network considering the micro-energy network support function. The method is characterized in that the elastic evaluation index of the distribution network with the micro-energy network is given; a power-off management scheme taking the micro-energy network as a main body at the stage of resisting and adapting faults is proposed, namely, a micro-energy network rolling scheduling model based on model predictive control is established; a fault recovery model taking the distribution network as the main body in the fault recovery stage of the distribution network is established. The method is advantaged in that the method can be applied to the distribution network with the multi-micro energy network under natural disasters such as typhoons and thunderstorms, and responds to fault characteristics of the distribution network under the large-scale long-time extreme disasters, from disaster occurrence to disaster ending, the flexibility of the distribution network in the whole process is improved, two states of micro-energy network island operation and grid-connected operation are fully utilized, the multi-energy complementary function of the micro-energy network is maximized, and a valuable technical foundation is provided for flexible operation of the distribution network under extreme disasters.
Owner:TIANJIN UNIV
Positioning confidence optimization method based on Bayesian multi-sensor error constraint
PendingCN114019552AOptimizing the Adaptive Fusion Positioning FrameworkBest Confidence Positioning SolutionNavigation by speed/acceleration measurementsSatellite radio beaconingEngineeringNatural hazard
The invention discloses a positioning confidence optimization method based on Bayesian multi-sensor error constraint, and belongs to the technical field of navigation positioning and information fusion application. According to the method, a multi-source fusion positioning system composed of a GNSS, an IMU, laser radar, and a visual camera is utilized, and on the basis of a multi-source fusion state updating model, error constraints of all sensors are extracted; a Bayesian decision equation is introduced into a sliding window of a time sequence, and weight balancing is carried out on each information source; and a joint global error constraint equation is established, a self-adaptive fusion positioning framework is optimized, and a multi-source fusion optimal confidence positioning solution is obtained. The method is simple and easy to implement, and a self-adaptive positioning technical means can be provided for an unmanned intelligent platform in unknown shielding environments such as urban canyons and geological natural disasters.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Severe convection weather recognition algorithm based on convolutional neural network learning
PendingCN112016615AReal-time identificationWeather condition predictionCharacter and pattern recognitionAlgorithmNatural hazard
The invention relates to the technical field of natural disaster prediction, in particular to a severe convection weather recognition algorithm based on convolutional neural network learning, which comprises the following steps: firstly, collecting a historical weather flow pattern model, then training and learning through a convolutional neural network, and obtaining a recognition model for the historical weather flow pattern through training and learning; secondly, adopting a real-time rainstorm weather flow pattern model through a radar real-time meteorological chart, and then recognizing the real-time weather flow pattern model through the recognition model obtained through training in the first step; judging whether the real-time weather system of the weather flow pattern model identified in the step 2 is located in a monitored key area or not; if yes, outputting a weather flow pattern conforming to geological disasters; and if not, continuing real-time identification. According to the method, real-time recognition is carried out on radar images of severe convection weather, recognition is carried out through a model obtained through convolutional neural network learning and training, and different weather models and disaster models judged in a monitored area can be effectively obtained.
Owner:西安易辑数字科技有限公司
Remote intelligent monitoring and early warning system and method based on photovoltaic cell power supply
ActiveCN114724337AConvenient power supplyReduce energy consumptionBatteries circuit arrangementsMeasurement devicesGas detectorNatural hazard
The invention relates to the technical field of remote monitoring and early warning, and provides a remote intelligent monitoring and early warning system and method based on photovoltaic cell power supply to solve the problem that an existing monitoring and early warning system is limited by power supply and cannot monitor and early warn natural disasters and accidents in time when commercial power is not connected in a remote area. The system comprises a plurality of monitoring devices arranged in a distributed mode and a remote monitoring server connected with the monitoring devices. Each monitoring device comprises an infrared detector, a camera, a temperature sensor, a humidity sensor, a gas detector, a wind power detector, a light intensity sensor and a photovoltaic power storage mechanism; wherein the monitoring devices are in communication connection, and the environment information collected by the monitoring devices can be mutually shared; and the remote monitoring server obtains current environment information, and controls each element to work in sequence according to a preset time sequence according to the weather information and the environment information to collect corresponding environment data, so that early warning can be performed in time when abnormity occurs.
Owner:XUYU OPTOELECTRONICSSHENZHEN CO LTD
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