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33results about How to "Enable accurate simulation" patented technology

Organ chip device capable of simulating physiological microenvironment in joint and application thereof

The invention discloses an organ chip capable of simulating a physiological microenvironment in a joint and application of the organ chip. The organ chip comprises a cell culture layer 1, an elastic film 2, an air pressure control layer 3, a cell culture channel 4, a cell culture fluid perfusion channel 5, a cell suspension inlet 6, a cell suspension outlet 7, a culture fluid perfusion inlet 8, a culture fluid perfusion outlet 9, a through hole 10, a through hole 11, a first air pressure groove 12, a second air pressure groove 13, a pneumatic chamber 14, a pneumatic chamber 15, a cell bearing platform 16 and a matrix 17. The organ chip can simulate physical factors such as dynamic compression and relative sliding in joint movement in vitro, and the physical factors are combined with chemical stimulation factors.
Owner:THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA

Gas pipeline and subway safety distance optimization method based on numerical simulation

The invention discloses a gas pipeline and subway safety distance optimization method based on numerical simulation, and relates to the technical field of subway tunnel safety, and the method comprises the steps: simulating gas pipeline explosion data through a KFX Exsim gas explosion model; establishing a fluid-solid coupling model, a soil dynamic model and a thermodynamic coupling model, and coupling the three models to obtain a multi-physics coupling model; based on a multi-physics field coupling model, performing decomposition and region division on a numerical simulation task in combination with a parallel computing framework, and simulating the influence of gas pipe explosion on the subway; based on a numerical simulation result, evaluating the safety of the tunnel under the action of the explosion load; based on a safety evaluation result, optimizing a safety distance between the gas pipeline and the tunnel; according to the method, the fluid-solid coupling model, the soil dynamic model and the thermodynamic coupling model are established and coupled to form a multi-physical field coupling model comprehensively covering the explosion environment, and accurate simulation of complex behaviors of the subway tunnel in the explosion environment is achieved.
Owner:SHIJIAZHUANG TIEDAO UNIV

Method and system for simulating motion of bubbles in transformer oil by considering multi-physics field coupling

The invention discloses a method and a system for simulating bubble motion in transformer oil by considering multi-physics field coupling, and the method comprises the steps: fusing an energy equation into a mass conservation and momentum conservation equation, and constructing a multi-physics field model which considers the coupling of an electric field, a thermal field and a flow field; introducing a k-epsilon turbulence model into the multi-physics field model to obtain a first optimized multi-physics field model; the k-epsilon turbulence model is an oil flow model in a large transformer; introducing a phase field method into the first optimized multi-physics field model to obtain a second optimized multi-physics field model; various forces of bubble motion are introduced into the second optimized multi-physics field model, and a third optimized multi-physics field model is obtained; and performing parameter solving on the third optimized multi-physical field model to obtain the movement process of the bubbles in the transformer oil. According to the invention, a multi-physical field model considering coupling of an electric field, a thermal field and a flow field is constructed, and comprehensive and accurate simulation of bubble motion in transformer oil is realized.
Owner:CHENGDU POWER SUPPLY COMPANY OF STATE GRID SICHUAN ELECTRIC POWER

Environment situation awareness data engineering system and method based on multi-source data fusion

The invention discloses an environment situation awareness data engineering system based on multi-source data fusion, which relates to the related technical field of environment situation awareness and comprises a multi-source data acquisition module, a multi-source data processing module, an environment evolution analysis module, an ecological restoration evaluation module, an ecological system evolution module and a visual observation module. The invention further discloses an environment situation awareness method based on multi-source data fusion, which comprises the steps of collecting environment data, effectively integrating the data, and presenting the data to a terminal user in a chart by utilizing a model evolution trend, a prediction result and possible influence of environment change on human behaviors. The UEB model is suitable for various climate and topographic conditions, has high precision and reliability in a high and cold plateau complex environment, can help to analyze and predict the influence of human activities on environmental elements and the influence of environmental changes on human behaviors, deeply excavates the interaction between the human activities and the environmental changes, and improves the prediction accuracy of the human activities and the environmental changes. And insight is provided for decision makers.
Owner:NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS

Automatic leveling and plummet system

The invention relates to the technical field of instrument calibration, in particular to an automatic leveling and plumbing system which comprises a laser transmitting module, a laser receiving module, a transmitting verification module, an anomaly analysis module, a plumbing correction module and a result output module, the laser transmitting module transmits laser, the laser receiving module obtains light spot information and transmits the light spot information to the transmitting verification module, and the plumbing correction module outputs the result. The laser emission quantity and parameters are controlled, the abnormity analysis module is used for determining the clear and stable state of laser emission and judging whether the laser emission accords with the plummet detection condition, the plummet correction module is used for judging whether laser verification is carried out or not according to the analysis result and sending a control instruction to the emission verification module, and the result output module is used for outputting the plummet detection result. According to the invention, the automation level and the measurement precision of the plummet detection are improved, the personal error is reduced, and the stability and the reliability of the system are enhanced.
Owner:DALIAN LEITE PHOTOELECTRIC PRECISION INSTR CO LTD

Reservoir forecasting and dispatching integrated method

The invention provides a reservoir forecasting and dispatching integrated method. The reservoir forecasting and dispatching integrated method comprises the steps that water catchment units of a reservoir water catchment area are divided according to DEM topographic data; a hydrological model is adopted to simulate the hydrological process of each catchment unit, and the runoff yield of each catchment unit is obtained; constructing a topological relation between an upstream river channel and a reservoir area of the reservoir, and performing simulation based on the runoff by adopting a hydrodynamic model to obtain flow convergence data; constructing a sluice and weir discharge model, setting a reservoir dispatching scheme, and calculating the discharge flow of the reservoir; a reservoir area regulation and storage model is constructed, and the reservoir area water level in the forecasting period is obtained; and pushing a reservoir scheduling scheme based on the reservoir area water level in the forecast period. According to the method, accurate simulation of reservoir forecast scheduling is realized, an effective tool is provided for flood control and disaster reduction and optimal scheduling of water resources, and the method has important practical value.
Owner:NANJING HYDRAULIC RES INST

Wind power boosting rotor external field vibration sound radiation simulation method

The invention relates to a wind power boosting rotor outfield vibration sound radiation simulation method, which comprises the following steps: based on fluid simulation software Star-ccm +, taking a wind power boosting rotor outer cylinder contour as a rigid wall surface, setting an inlet condition as a wind speed and an outlet condition speed as 0, and calculating outer cylinder contour pulsating pressure; based on structural finite element software Abaqus, a finite element model is established according to the outer cylinder structure of the wind power boosting rotor, pulsating pressure serves as load input, constraint conditions are added, and the vibration displacement of the outer cylinder is calculated; based on acoustic finite element software Actran, node position information of the structural finite element model is imported, an external field acoustic domain is established, and external cylinder external field vibration sound radiation is calculated by taking external cylinder vibration displacement as load input; according to the method, calculation is carried out based on a frequency domain, the real sound wave transmission condition and the actual sound pressure cannot be reflected, and certain limitation exists. Therefore, by adopting the vibration sound radiation time domain simulation analysis method, the vibration sound radiation condition in the time domain can be obtained, and the change of the actual sound pressure along with the time can be obtained.
Owner:DEEP SEA TECH & SCI TAIHU LAB LIANYUNGANG CENT +1

Low-permeability reservoir nanofluid oil displacement simulation method based on immersed boundary method

The invention discloses a low-permeability reservoir nanofluid oil displacement simulation method based on an immersed boundary method, belongs to the technical field of petroleum and natural gas extraction, is used for fluid oil displacement simulation, and comprises the steps of constructing a two-dimensional pore throat image, constructing an oil-water two-phase seepage simulation method and updating macroscopic fluid parameters. Analyzing the stress condition of the active nano-particles, constructing an active nano-particle kinematical equation, and tracking the motion trail of the active nano-particles; an interaction coupling format between active nanoparticles and fluid is constructed based on an immersed boundary method (IBM), a nanofluid oil displacement process is represented, behavior dynamic parameters of the nanoparticles under different injection conditions are analyzed, and main control factor analysis is carried out. According to the method, the inter-phase acting force is simulated through the pseudo-potential function, accurate simulation of oil displacement by water is achieved, an active nano-particle kinematics control equation is constructed, updating of the flow speed and the position of the active nano-particles is achieved, and design and use of nano-fluid in a low-permeability reservoir site are further guided.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

Electronic transformer multi-physics field coupling insulation voltage resistance verification method

The invention discloses an electronic mutual inductor multi-physics coupling insulation voltage-withstanding verification method, which relates to the field of electric power system engineering, and comprises the following steps: constructing a multi-physics coupling simulation model comprising an electromagnetic field, a temperature field and a mechanical stress field, and setting specific simulation parameters to operate the model; therefore, the insulation and voltage resistance of the electronic transformer under different working conditions can be evaluated. Meanwhile, a sensor is installed in the mutual inductor to collect working state data in real time, the data and a simulation result are subjected to fusion analysis, the insulation state trend is predicted through a machine learning algorithm, a maintenance plan is made accordingly, potential faults are early warned in time, and safe and stable operation of equipment is ensured. The safety, the reliability and the operation efficiency of the electronic transformer are remarkably improved, and insulation and voltage resistance can be efficiently verified.
Owner:GUIZHOU POWER GRID CO LTD

Motor simulator control system and method based on ARM and dual-FPGA architecture, and computer readable storage medium

The invention provides a motor simulator control system and method based on an ARM and double-FPGA architecture, and a computer readable storage medium, and mainly solves the technical problem that the test precision of an existing motor simulator on a motor controller is reduced due to the fact that the simulation precision of the existing motor simulator on a real motor is not enough. Wherein the control system comprises an ARM control unit, a centralized control FPGA unit and a rotary transformer FPGA unit, the ARM control unit and the centralized control FPGA unit mainly realize functions of a motor control algorithm, PWM output and the like, the rotary transformer FPGA unit mainly undertakes a rotary transformer simulation function, and the three units jointly form a whole set of motor simulator model algorithm. Therefore, accurate simulation and high-precision output of the motor model are realized.
Owner:XIAN ACTIONPOWER ELECTRIC

Highly integrated synchronous simulation multi-pollution source smog chamber system and working method

The invention discloses a highly integrated synchronous simulation multi-pollution source smog chamber system and a working method. Comprising a smog chamber, an outer box body, a zero gas generator, a solvent release unit, a biomass combustion furnace, a coal combustion furnace, an automobile exhaust emission collection unit, a temperature regulation and control unit, a humidity regulation and control unit, a plant emission collection unit, a multispectral light source and an industrial personal computer, the smog chamber is a square transparent box body, and the multispectral light source is located outside the smog chamber. The solvent release unit comprises a vacuum storage tank and a solvent beaker; and the vacuum storage tank, the biomass combustion furnace, the coal combustion furnace, the automobile exhaust emission and collection unit and the plant emission and collection unit are also respectively connected with the smog chamber through pipelines. The temperature regulation and control unit comprises a refrigerating unit and an electric heating pipe, and the humidity regulation and control unit, the electric heating pipe and an evaporator of the refrigerating unit are all arranged in the smog chamber. According to the invention, by integrating emission of various pollution sources, the real illumination condition of the environment is accurately simulated, and comprehensive simulation research on variable factors in the atmospheric environment is realized.
Owner:QINGDAO UNIV OF TECH

Anchor chain simulation method and system based on spring-quality system

InactiveCN119397754AEnable accurate simulationimprove security
The invention discloses an anchor chain simulation method and system based on a spring-quality system, and the method comprises the steps: S1, building an anchor chain model, determining the initial position of a first node in the anchor chain model, the length of an anchor chain and the number of nodes, and determining the initial positions of other nodes; s2, applying external force to the anchor chain model, and performing stress analysis on each node in the anchor chain model based on the Newton second law; s3, updating the speed and the position of each node; s4, acquiring an initial distance between adjacent nodes set by a user, comparing the initial distance between the adjacent nodes with a set threshold value, and setting the distance between the adjacent nodes according to a comparison result; and S5, obtaining a simulation result of the anchor chain model. Accurate simulation of the stress and motion state of the anchor chain in a dynamic environment is realized, the simulation accuracy is further improved by setting the distance between adjacent nodes, the dynamic behavior of the anchor chain in the anchoring stage is accurately simulated, and the safety in the ship mooring and operation process is improved.
Owner:DALIAN MARITIME UNIVERSITY +2

High-speed jet flow wind tunnel large-scale model speed pressure simulation test method

PendingCN122084220AEnable accurate simulationHas engineering practical valueAerodynamic testingSustainable transportationScale modelJet flow
The invention belongs to the technical field of high-speed wind tunnel tests, and discloses a high-speed jet flow wind tunnel large-scale model velocity pressure simulation test method, which comprises the following steps: installing a model at an initial state position; calculating the total pressure P0 of the wind tunnel; the injection pressure P0p is calculated; starting a high-speed free jet wind tunnel; transforming the model to a second state; performing flow field parameter adjustment according to the model state, and performing static pressure matching fine adjustment; continuing to transform the model state until all data are collected; and closing the high-speed free jet wind tunnel. According to the high-speed jet flow wind tunnel large-scale model velocity pressure simulation test method, under the condition that the Mach number M is determined, the wind tunnel total pressure P0 and the injection pressure P0P are selected, accurate simulation of the Mach number M and the velocity pressure is achieved, and the method has engineering practical value.
Owner:INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT

Air gap development model in dry-type sleeve core body and carbonization ablation judgment method and system

The invention belongs to the technical field of electrical equipment, discloses a dry-type sleeve epoxy core air gap defect development model and a carbonization ablation judgment method, and researches the ablation behavior of epoxy resin under external heat application through numerical simulation. An MATLAB simulation environment is used, a program uses a finite difference method to simulate heat conduction and mass loss processes, continuous heat flow can be applied to the surface through material ablation, the heat flow is conducted to the interior of the material to cause temperature rise of the surface and the interior of the material, once epoxy resin reaches a stationary point temperature under the influence of an externally applied heat source, the material is ablated, and the heat loss is reduced. And the temperature rise causes a chemical reaction of the material to generate a gas-phase product to remove the surface of the material, and the internal material is exposed, namely, the material continuously generates a new surface. The study on the ablation behavior of the epoxy resin material is helpful for deeply revealing the defect evolution rule and the insulating property damage mechanism of the dry-type bushing epoxy core body under the complex working condition.
Owner:GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD

Environmental situation awareness data engineering system and method based on multi-source data fusion

The present invention discloses an environmental situation awareness data engineering system based on multi-source data fusion, which relates to the technical field related to environmental situation awareness, including a multi-source data acquisition module, a multi-source data processing module, an environmental evolution analysis module, an ecological restoration assessment module, an ecosystem evolution module and a visualization observation module. The present invention also discloses an environmental situation awareness method based on multi-source data fusion, including collecting environmental data, effectively integrating the data, using model evolution trends and prediction results and the possible impact of environmental changes on human behavior, and presenting them to end users in charts. The UEB model of the present invention is applicable to a variety of climate and terrain conditions, and has high accuracy and reliability in complex environments of high-cold plateaus. The UEB model can help analyze and predict the impact of human activities on environmental elements, as well as the impact of environmental changes on human behavior, deeply explore the interaction between human activities and environmental changes, and provide insights for decision makers.
Owner:NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS

Fibre Channel (FC) network simulation method and device based on simulation platform and electronic equipment

ActiveCN121098736BResolve configuration complexity issuesFlexible and efficient simulation initializationMultiplex system selection arrangementsTransmissionProcessor modelComputer network
This application discloses an FC network simulation method, apparatus, and electronic device based on a simulation platform, relating to the field of optical communication network simulation technology. The method includes: configuring simulation parameters and constructing an FC node model to generate FC packets. An FC switch model is constructed based on the simulation parameters, including a switch port model, a message distribution model, and a switch processor model. The switch port model includes cascaded ports, achieving accurate simulation of large-scale networks. FC packets are sent from the FC node model to the switch port model and then uploaded to the message distribution model via the switch port model. Based on the message distribution model, the FC packets are distributed to the switch processor model or cascaded ports according to packet field information. Based on the switch processor model or cascaded ports, the FC packets are cached and forwarded to the corresponding target node model based on priority, achieving a reliable distribution mechanism and improving the adaptability of the simulation.
Owner:WUHAN AVIC GENERAL TECH CO LTD

Construction method of sintered nano-silver constitutive model based on nanoindentation test

PendingCN122021177AAccurately capture viscoplastic deformation behaviorPredict mechanicalDesign optimisation/simulationConstraint-based CADElement modelElectronic packaging
The invention discloses a construction method of a sintered nano-silver constitutive model based on a nanoindentation test. The construction method comprises the following steps: preparing a sintered nano-silver sample; carrying out a nanoindentation experiment at different loading rates, and recording a load-displacement curve; establishing a unified creep-plasticity constitutive model; establishing a finite element model, embedding the constitutive model into the finite element model through a user-defined material subprogram, simulating the nanoindentation process at different loading rates, and recording a load-displacement curve; and comparing and analyzing the obtained load-displacement curve, and verifying the accuracy of the model. According to the method, by accurately describing the mechanical behaviors of the sintered nano-silver at different loading rates, the data blank of the mechanical properties of the sintered nano-silver at a high loading rate is filled, and the constitutive model capable of capturing the micro-mechanical behaviors of the sintered nano-silver is established; and an effective simulation means and theoretical support are provided for reliability evaluation of the electronic packaging material.
Owner:NANJING UNIV OF POSTS & TELECOMM +1

Intracranial aneurysm in-vitro amplification model blood circulation experiment system and method

PendingCN121963559AAchieve amplified constructionEnable accurate simulationCosmonautic condition simulationsHydrodynamic testingExtracorporeal circulationPeristaltic pump
The invention relates to an intracranial aneurysm in-vitro amplification model blood circulation experiment system and method, and the system comprises an intracranial aneurysm in-vitro amplification model, a peristaltic pump, a liquid storage tank, a flow detection part and a pressure detection part, one end of the pump pipe is connected with an outlet of the liquid storage tank, the other end of the pump pipe is connected with an inlet of the intracranial aneurysm in-vitro amplification model, and an outlet of the intracranial aneurysm in-vitro amplification model is connected with an inlet of the liquid storage tank to form an extracorporeal circulation path. The experimental method comprises the steps of model and boundary condition zooming, blood flow simulation system construction, in-vitro patient specificity model and circulation path establishment, real-time monitoring and data acquisition. On the premise of meeting a flow similarity criterion, amplification construction of a patient specific aneurysm model, accurate simulation of physiological pulsating blood flow and systematic monitoring of key hemodynamic parameters can be realized; therefore, an in-vitro experiment platform which is more reliable and closer to the physiological state is provided for hemodynamic research of intracranial aneurysm.
Owner:FUZHOU UNIV

Industrial vision automatic alignment method and related equipment

The invention relates to the technical field of industrial vision detection, and provides an industrial vision automatic alignment method and related equipment, and the method comprises the steps: collecting a visible light image, point cloud data information and a hyperspectral image of a to-be-aligned target; determining the component name of the to-be-aligned target based on the visible light image and the hyperspectral image; acquiring a virtual alignment scene of the to-be-aligned target in a database based on the component name; wherein the virtual alignment scene comprises a standard virtual part of the target to be aligned; constructing a virtual part of the to-be-aligned target in the virtual alignment scene based on the visible light image and the point cloud data information; controlling the virtual part to move to be overlapped with the standard virtual part in the virtual alignment scene, and recording the moving track of the virtual part in the process of controlling the virtual part to move; and performing alignment processing on the to-be-aligned target based on the moving track. According to the method, high-precision alignment of small and complex parts can be realized.
Owner:深圳市志航精密科技有限公司

Driving, steering and damping integrated mechanism

The utility model discloses a driving, steering and damping integrated mechanism which comprises a device body, the device body comprises a fixed bottom plate, a steering bottom plate, a driving, steering and damping device and a steering top seat, the steering bottom plate is installed on the fixed bottom plate, and the steering top seat is installed on the top of the steering bottom plate. The driving steering damping device is installed at the bottom of the steering top seat and located on the steering bottom plate. The driving steering damping device comprises a front driving device, a rear driving device, a pneumatic damper and moving wheels, the front driving device is mounted at the front end of the pneumatic damper bottom, the rear driving device is mounted at the rear end of the pneumatic damper bottom, and the moving wheels are mounted between the driving ends of the front driving device and the rear driving device; according to the device, the required performance can be better provided for the mobile flat plate, and meanwhile, the mobile flat plate can move in any direction in any posture, so that the accurate simulation of the motion path and posture is realized.
Owner:SHANGHAI DIGAUTO AUTOMOBILE TECH CO LTD

Electromagnetic thermal field circuit coupling simulation method and system of uninsulated superconducting magnet

The invention provides an electromagnetic thermal field circuit coupling simulation method and system for an uninsulated superconducting magnet. The method comprises the step of constructing a circuit network model, a magnetic field model and a solid heat transfer model. Current distribution solved by the circuit network model is imported into the magnetic field model and the solid heat transfer model; the critical current distribution parameters of the magnetic field and temperature distribution are updated in real time. During iteration, the healthy coils with the temperature rise lower than a threshold value construct a centralized circuit network model, and the quench coils with the temperature rise exceeding the threshold value are dynamically switched to a distributed circuit network model. According to the method, the refined circuit meshes of the quench region are constructed, so that the calculation precision of the highly nonlinear region is effectively improved, and accurate simulation of the electromagnetic thermal index in the full work period of the uninsulated superconducting magnet is realized; by adopting a centralized circuit network model and sparse circuit meshes, the number of variables to be solved is reduced while the calculation precision of the model is ensured, and the problem that the simulation burden of a ten-thousand-turn-level strong-field uninsulated magnet is too heavy is solved.
Owner:SHANGHAI JIAOTONG UNIV

An automatic leveling and plumbing system

ActiveCN119197485Bensure precise adjustmentImprove positioning accuracyPlumb lines for surveying
The invention relates to the technical field of instrument calibration, and in particular to an automatic leveling and plumbing system. The system comprises: a laser emitting module, a laser receiving module, an emission verification module, an abnormality analysis module, a plumbing correction module and a result output module. The laser emitting module emits laser, the laser receiving module obtains light spot information, the emission verification module controls the laser emission quantity and parameters, the abnormality analysis module determines the clarity and stability of the laser emission, and judges whether it meets the plumbing detection conditions. The plumbing correction module judges whether to perform laser verification according to the analysis result, and issues a control instruction to the emission verification module. The result output module outputs the plumbing detection result, and judges whether it meets the plumbing requirement. The invention improves the automation level and measurement accuracy of plumbing detection, reduces human errors, and enhances the stability and reliability of the system.
Owner:DALIAN LEITE PHOTOELECTRIC PRECISION INSTR CO LTD

Oil-immersed cooling underwater frequency converter temperature field simulation analysis method and system

The invention belongs to the technical field of underwater cooling and thermal management, and particularly relates to an oil-immersed cooling underwater frequency converter temperature field simulation method and system, and the method comprises the steps: building a geometric model of an underwater frequency converter and an internal fluid domain model of the underwater frequency converter; carrying out grid division on a solid grid and a fluid domain of the underwater frequency converter model, and setting material attributes; setting a contact type and a friction condition between objects in the underwater frequency converter; the environment temperature of the underwater frequency converter, the convection coefficient of a shell and seawater, the natural convection and heat transfer coefficient of internal oil and the thermal load of each heating module are set, and the overall heat dissipation performance is verified and optimized through simulation. The technical problems that in the prior art, due to the fact that the thickness of a shell of a pressure-resistant cabin is large, the heat conduction path is long, the heat dissipation efficiency is low, and local overheating is caused due to the fact that the pressure-resistant cabin cannot adapt to water temperature changes and complex distribution of heating devices are solved; the heat dissipation simulation accuracy is improved; and the overall heat dissipation performance is optimized.
Owner:CHINA STATE SHIPBUILDING CORP LTD RESEARCH INSTITUTE 719 +1

A method and system for basin rainfall runoff forecasting based on neural network

The present invention relates to the field of rainfall runoff simulation technology, and discloses a basin rainfall runoff forecasting method and system based on neural network, the method comprising obtaining terrain basic data, measured rainfall runoff process diagram and historical rainfall runoff data; inputting the historical rainfall runoff data into a back propagation neural network to obtain initial model parameters of a rainfall runoff model; obtaining optimal model parameters according to the initial model parameters by using an optimal precision algorithm; using the optimal model parameters as preset parameters of a rainfall runoff model to obtain an optimal rainfall runoff model; and calculating rainfall runoff data according to the terrain basic data and the measured rainfall runoff process diagram, using the optimal rainfall runoff model and a preset runoff transmission model. The method improves the accuracy of the predicted runoff results by combining an artificial neural network to correct the parameters of the hydrological model.
Owner:湖南省气象服务中心

A meta-universe digital twin skipping system and method based on a non-wearable motion capture technology

ActiveCN120643896BLower the threshold for participationEnable accurate simulation
The application discloses a kind of based on without wearing body sense motion capture technology's meta-universe digital twinborn system of playing water and method, it is related to computer vision technical field, the system includes module: without wearing action capture module, key point data processing and transmission module, multidimensional physical parameter engine, digital twinborn water area module, competitive rules and scoring module, digital person fitness ecosystem, virtual asset and economic system, LBS geographic anchoring system, environmental protection and cultural inheritance system, cross-chain intercommunication and security system.This based on without wearing body sense motion capture technology's meta-universe digital twinborn system of playing water and method, without wearing any equipment, greatly reduce user participation threshold, and through high-precision motion capture and physical simulation, provide close to real playing water experience, while multidimensional physical parameter engine realizes the accurate simulation of real fluid dynamics and rigid body dynamics, supports 12 kinds of hydrological environment.
Owner:SUZHOU KUYUE NETWORK TECH CO LTD

Method for accurately simulating laser light field in multi-stage amplification system

ActiveCN121763564AAchieve reproductionLight field propagation is accurateOptical measurementsPhotometry using electric radiation detectorsLight beamLaser light
The invention discloses a method for accurately simulating a laser light field in a multi-stage amplification system, which comprises the following steps of: measuring the intensity distribution and phase distribution of an initial signal light beam, and decomposing and reconstructing to obtain a light field of a reconstructed initial signal light beam; enabling the three pump light beams to enter three corresponding laser gain media from the end face in a collimation manner, and calculating to obtain the temperature distribution of each laser gain medium; giving reconstructed initial signal light beam power, starting to propagate in a light field form, and sequentially performing three times of amplification through three laser gain media; the three laser gain media are axially and equidistantly sliced, and a signal light beam in each slice serves as an input light field and is jointly modulated by a heat effect and a gain effect; and then the modulated light field is input to the next slice, and finally light field propagation of the laser beam in each laser gain medium is obtained. According to the invention, accurate simulation of the full-optical-path laser light field in the multi-stage amplification system can be realized.
Owner:ZHEJIANG UNIV +1

Field irrigation simulation system

The utility model relates to the technical field of agricultural equipment, in particular to a field irrigation simulation system which comprises a simulation mechanism used for simulating a field environment, a plurality of planting mechanisms used for planting crops and a plurality of real-time monitoring mechanisms used for monitoring the simulation mechanism and the planting mechanisms in real time. The irrigation mechanisms are used for irrigating water and / or chemicals, and the electrical control unit is used for overall control. According to the invention, a series of work such as accurate simulation of a field environment, batch planting of crops, environment detection, crop detection and custom selection of multiple irrigation modes can be realized, the automation and custom degree is high, the integration degree is high, the occupied space is small, the environment in the simulation mechanism is conveniently and automatically adjusted according to simulation requirements, and the simulation efficiency is improved. Meanwhile, automatic irrigation of water and chemicals can be achieved, the working intensity of researchers is greatly reduced, real-time monitoring of the environment and crops can be achieved through the real-time monitoring mechanism, the monitoring precision is high, and research work can be conveniently carried out.
Owner:HANGZHOU ZHIHAI HEDA TECH CO LTD

Method and system for testing friction characteristics of static root drilling planting pile and different contact surfaces

The invention relates to the technical field of material friction characteristic tests, in particular to a method and a system for testing friction characteristics of a static drilling root planting pile and different contact surfaces. The method comprises the following steps: firstly, dividing a plurality of soil layer units according to spatial distribution characteristics of a pile hole soil layer, and obtaining a physical characteristic vector of each soil layer unit; then preparing a pile material test piece and different types of soil layer samples, and carrying out a ring shear test under the conditions of standard prestress, temperature and moisture content to obtain first cohesive force and a first friction angle; calculating a correction coefficient according to the physical characteristic vector of the soil layer unit to obtain a second cohesion and a second friction angle, establishing a finite element mesh model, defining the mechanical behavior of a pile-soil contact surface according to the second cohesion and the second friction angle, and performing a simulation test to obtain a friction characteristic vector of the static drilling rooted pile and each soil layer contact surface; and finally, adjusting the parameter set by adopting an optimization algorithm. According to the invention, the reliability and accuracy of the friction characteristic test of the static drilling root planting pile and different contact surfaces can be improved.
Owner:CHANGYE CONSTR GROUP

Infrared target detection method based on generated dataset

ActiveCN119048861BEnable accurate simulationincrease diversity
The present application relates to a kind of infrared target detection methods based on generating data set, belong to target detection field, it includes: collecting the background video under typical scene, and the background video is stabilized processing;Using target generation algorithm in the first frame of original background video sequence Initialization artificial target information, and by simulating artificial target in each frame of subsequent original background video sequence to obtain synthetic video sequence;Continuous frame segmentation training model of video is constructed, at least including encoder and decoder, wherein, the encoder is used to carry out feature extraction to input data, and the decoder is used to process the feature of encoder output;Synthetic video sequence is used as data set sample space to the continuous frame segmentation training model of video constructed and is trained;Using the continuous frame segmentation model of video trained to analyze real-time infrared small target detection video, and the position information of output target.
Owner:CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACAD OF SCI +1

3D ultra-high-definition fluorescence medical endoscope imaging method and device

The present invention discloses a 3D ultra-high-definition fluorescent medical endoscope imaging method and device, including: acquiring and analyzing the real-time video stream of the endoscope, performing denoising and multi-dimensional feature extraction; using a multi-scale shape reconstruction method to perform initial depth estimation, obtaining a high-precision depth map through stereo disparity optimization and conditional random field methods, and reconstructing the initial three-dimensional point cloud; using a variational registration method based on optimal transmission theory for precise registration, and dynamically resampling and fusing white light and fluorescent image sequences; combining a tissue physical model, performing surface reconstruction, optimization and refinement of the initial three-dimensional point cloud, using a fused image sequence for dynamic texture mapping, and finally rendering and outputting. This method achieves high-quality 3D ultra-high-definition fluorescent medical endoscope imaging.
Owner:南京晨新医疗科技有限公司