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43results about How to "Assess security" patented technology
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Visual real-time monitoring method and system for digital floating disc of storage tank
InactiveCN119197658AAssess stabilityAssess securityRadio wave reradiation/reflectionComputer hardwareAnomaly detection
The invention relates to the technical field of storage tank safety monitoring, in particular to a visual real-time monitoring method and system for a digital floating disc of a storage tank. The method comprises the following steps: carrying out real-time floating disc signal acquisition on a full liquid receiving floating disc to obtain real-time floating disc sensing signal data, and carrying out data filtering preprocessing on the real-time floating disc sensing signal data to obtain floating disc sensing signal data; performing Kalman filtering data fusion on the floating disc sensing signal data to obtain real-time floating disc sensing fusion data; performing floating disc abnormal state detection on the real-time floating disc sensing fusion data to obtain floating disc abnormal detection data; floating disc early warning information integration is carried out according to the floating disc anomaly detection data, so that an abnormal floating disc alarm strategy is obtained; data of the full-liquid-receiving floating disc auxiliary mechanism is obtained, prevention and control strategy analysis is carried out, an abnormal floating disc prevention and control strategy is obtained, and the abnormal floating disc prevention and control strategy is uploaded to a controller to execute a floating disc prevention and control task. The safety of the storage tank can be improved.
Owner:HUNAN SHANGCHI ENVIRONMENTAL PROTECTION TECH CO LTD
Device and method for detecting compressive property of new material
InactiveCN119309922AAssess securityimprove accuracyMaterial strength using tensile/compressive forcesMechanical engineeringNew materials
Owner:DONGTAI JUDING NEW MATERIAL TECHNOLOGY CO LTD
Transformer comprehensive safety assessment method and system based on symbol regression
PendingCN119598417AAssess securityImprove utilization efficiencyMathematical modelsMeasurement devicesAlgorithmTransformer
The invention relates to a transformer comprehensive safety assessment method and system based on symbol regression. The method comprises the following steps: acquiring monitoring variables of an electrical signal dimension, an equipment state dimension and an operation environment dimension of a transformer; based on the maximum mutual information coefficient, screening the dimension monitoring variables to obtain a plurality of monitoring variable sets with closely associated variables; performing sign regression on the plurality of monitoring variable sets to obtain a nonlinear function expression between any reference monitoring variable and other monitoring variables in the monitoring variable sets, namely a mutual check function, and realizing sign regression by using a genetic algorithm; establishing a single-variable fault probability function according to the influence of the multi-dimensional monitoring variable on the transformer equipment; and building a system dynamics model based on the mutual verification function and the fault probability function to realize comprehensive safety evaluation of the transformer. Compared with the prior art, the method has the advantages of improving the safety assessment level of the transformer, being high in interpretability and the like.
Owner:STATE GRID SHANGHAI MUNICIPAL ELECTRIC POWER CO
Wind-vehicle-bridge-vortex-induced vibration analysis method considering tower area wind load sudden change
The invention relates to the technical field of bridge safety, and discloses a wind-vehicle-bridge-vortex-induced vibration analysis method considering tower area wind load sudden change. According to the method disclosed by the invention, the static wind load and the vortex-induced vibration taking the wind load sudden change effect of the tower area into consideration are taken as external excitation to form a wind-train-bridge-vortex-induced vibration coupling system, and compared with a known method for evaluating the safety and comfort of the train running on the bridge in a vortex-induced vibration state, the method disclosed by the invention has the advantages that the wind-train-bridge-vortex-induced vibration coupling system is formed; according to the invention, the dynamic response of the train running on the bridge can be evaluated more accurately, especially the safety and comfort when the train passes through the tower area. Besides, the vortex-induced vibration is directly applied to the bridge in a displacement mode, coupling between the train and the bridge in the vortex-induced vibration state is fully considered, and the influence of the vortex-induced vibration on the dynamic response of the axle system can be evaluated more meticulously.
Owner:SOUTHWEST JIAOTONG UNIV
Building construction hidden danger point monitoring data analysis method
InactiveCN119648507AAssess stabilityAssess securityData processing applications3D modellingConstruction engineeringAnalysis method
The invention belongs to the technical field of building construction hidden danger point monitoring data analysis, and relates to a building construction hidden danger point monitoring data analysis method. By analyzing the basic hidden danger existence condition and the supporting hidden danger existence condition of each specified building construction hidden danger point, potential construction hidden dangers can be found in time, so that remedial measures are taken, accidents are avoided, the stability and safety of a supporting structure can be evaluated, the possible supporting failure problem can be early warned in time, and the safety of a building is improved. Therefore, potential safety hazards in construction can be recognized and solved more accurately, the occurrence rate of safety accidents is reduced, the overall safety of a construction site is improved, problems and bottlenecks in the construction process can be found in time by analyzing the potential safety hazard existence conditions of all designated building construction potential hazard points in the construction process, and the construction safety is improved. And targeted measures are taken for solving, so that potential safety problems can be found and handled in time, and the life safety and property safety of constructors are guaranteed.
Owner:JIANGSU BAORUN CONSTR TECH CO LTD
Residual life prediction method applied to aero-engine hot end component
ActiveCN119538675AImprove forecast accuracyincrease flexibilitySustainable transportationDesign optimisation/simulationFailure assessmentElement analysis
The invention discloses a residual life prediction method applied to a hot end component of an aero-engine, which comprises the following steps of: performing finite element analysis on the hot end component of the aero-engine with cracks, and determining J integral and stress three-axis degree of a crack front edge node under different loads; the representative position of the crack front edge is determined by combining the J integral of the crack front edge and the stress three-axis degree processing result; generating a traditional failure assessment diagram through the J integral of the representative position of the crack front edge; a correlation function of crack driving force and ligament yield parameters under different crack sizes is constructed, and a failure assessment diagram and a damage tolerance failure assessment diagram combined with the crack size effect are generated; and performing allowable crack size and residual fatigue life prediction to obtain a fatigue life prediction result. According to the method, the residual life prediction precision and reliability of the aero-engine hot end component are improved, the service cycle and maintenance strategy of equipment are optimized, and potential safety hazards caused by structural failure are reduced.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Substrate management controller access control method and system
PendingCN119513932Aaccurate assessmentAssess securityInternal/peripheral component protectionFuzzy control algorithmFuzzy set
The invention discloses a substrate management controller access control method and system, and relates to the technical field of networks, and the method comprises the steps: receiving a user request, obtaining request parameter information related to the user request, and extracting one or more pieces of key information in the request parameter information; mapping the key information to a constructed fuzzy set to obtain a membership degree of the one or more pieces of key information; and in combination with the one or more pieces of key information and the membership degree of the key information, calculating a risk assessment value of the user request, and when the risk assessment value meets a preset condition, executing a preset adjustment operation. According to the method and the device, the security of the access request can be comprehensively evaluated, and the uncertainty and fuzziness information existing in the access request can be analyzed through the fuzzy control algorithm, so that the risk of the access request can be more accurately evaluated, and the security of the system can be ensured.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD
Measurement device for magnetic resonance radio frequency induced voltage of medical instrument
PendingCN119224405AAssess securityaccurate measurementVoltage measurements onlyRadio frequency signalMR - Magnetic resonance
The invention relates to a magnetic resonance radio frequency induced voltage measuring device for a medical instrument. The magnetic resonance radio frequency induced voltage measuring device comprises a signal acquisition module and a radio frequency measuring module, wherein the signal acquisition module is used for acquiring radio frequency induced voltage generated by a radio frequency magnetic field on a medical instrument in a magnetic resonance environment to obtain an original radio frequency induced voltage signal and inputting the original radio frequency induced voltage signal to the radio frequency measurement module; the radio frequency measurement module comprises an attenuation circuit, a resonance circuit and a detection circuit; wherein the attenuation circuit is used for performing power attenuation on an input original radio frequency induced voltage signal to obtain a first radio frequency signal; the resonance circuit is used for performing frequency selection on the first radio frequency signal to obtain a second radio frequency signal in a specified frequency band, and the specified frequency band is matched with the frequency of the radio frequency magnetic field; and the detection circuit is used for detecting the second radio frequency signal to obtain a target radio frequency induced voltage signal. Therefore, the radio frequency induced voltage generated by the radio frequency magnetic field on the medical instrument in the magnetic resonance environment can be accurately measured.
Owner:TSINGHUA UNIVERSITY
Urban pipeline simulation data construction method based on intelligent remote sensing interpretation
ActiveCN119516134Aquick buildgenerate accuratelyInternal combustion piston enginesBiological modelsEngineeringComputer vision
The invention discloses an urban pipeline simulation data construction method based on intelligent remote sensing interpretation, and relates to the technical field of remote sensing image intelligent interpretation and urban geographic information basic data rapid generation. Comprising the following steps: acquiring an urban original ortho-image; carrying out preprocessing on the original orthoimage; marking the preprocessed orthoimage according to the road contour by using an image marking tool, and prefabricating a sample training set and a verification set; optimization is carried out based on coding and decoding structures in the U-Net original model, an urban pipeline simulation data construction model is established, and training of the model is completed; road line extraction is carried out by using the trained model; segmenting the road line; and assigning attributes to the segmented points and lines to complete generation of pipeline data. According to the method, the road of the remote sensing image is intelligently and automatically extracted, and the pipeline simulation data is constructed based on the extracted road data, so that the rapid generation of the urban pipe network data is realized, and the pipeline simulation data is provided under a specific condition.
Owner:CHINA ZHENGYUAN GEOMATICS CO LTD +1
Intelligent substation flexible configuration visual modeling analysis system
InactiveCN119603166ASolve the delay problemOptimize structure settingsTransmissionControl engineeringNetwork structure
The invention relates to the technical field of substations, and discloses an intelligent substation flexible configuration visual modeling analysis system which comprises a control center, a visual modeling module, a network topology modeling module, a flow model parameter setting module, a link flow management module, a flow visualization module, a link network time delay analysis module and an inspection module. The control center is respectively connected with the visual modeling module, the network topology modeling module, the flow model parameter setting module, the link flow management module and the link network delay analysis module, the link flow management module is also connected with the flow visualization module, and the control center is connected with the inspection module through the server. According to the method, visual modeling analysis is provided for intelligent substation equipment configuration modeling, flow model parameter setting, network topology modeling and link flow simulation monitoring, the problem of network delay is solved, the substation network structure is optimized, the stable operation level of substation equipment is improved, and technical support is provided for substation fault analysis.
Owner:NINGXIA HUI AUTONOMOUS REGION ELECTRIC POWER DESIGN INST
Driving safety control system of electric scooter
ActiveCN119190236AAssess securityaccurate assessmentCycle equipmentsElectric energy managementControl systemControl engineering
The invention discloses an electric scooter driving safety control system, which relates to the technical field of driving safety control and specifically comprises an electric scooter driving state monitoring module, an electric scooter driving state evaluation module and an electric scooter driving safety control module. Wherein the electric scooter driving monitoring module monitors to obtain control information and state information, and transmits the control information and the state information to the electric scooter driving state evaluation module; the electric scooter driving state evaluation module evaluates the state of the electric scooter in the driving process according to the control information and the state information, monitored by the electric scooter driving monitoring module, in the driving process, so that various indexes about the driving state of the electric scooter are obtained. The electric scooter driving safety control module presets index threshold values of various indexes related to the driving state of the electric scooter, and the driving safety control method of the electric scooter is determined by comparing the indexes with the corresponding index threshold values.
Owner:CYCLEAGLE INTELLIGENT EQUIP (WEIHAI) CO LTD
A method and device for risk assessment of composite material structure under multiple impacts
ActiveCN118839603Baccurate assessmentImprove positioning accuracyDesign optimisation/simulationNeural learning methodsNeural network nnRisk matrix
The present application belongs to the field of structural damage detection, and specifically discloses a method and device for risk assessment of composite material structures under multiple impacts, the method comprising: obtaining a probability imaging map of the impact location; thresholding the probability imaging map to obtain a thresholded probability imaging of the impact location; obtaining the total signal energy and energy feature vector; inputting the total signal energy, energy feature vector and position feature vector into a trained BP neural network to obtain the predicted value of the impact energy corresponding to each position point; thresholding the predicted value of the impact energy at each position point to obtain a thresholded impact energy distribution; repeatedly obtaining the risk matrix of multiple impacts, accumulating the risk matrix of each impact, and obtaining the risk assessment result of the composite material structure after multiple impacts. The present application can improve the positioning accuracy and reliability, thereby more accurately assessing the risk situation of the structure.
Owner:CHINA STATE SHIPBUILDING CORP LTD RESEARCH INSTITUTE 719
An explosion-proof chiller for testing new energy battery packs
ActiveCN224285123UImplement performance testingimprove performanceLighting and heating apparatusDomestic cooling apparatusTest batteryElectrical battery
This utility model discloses an explosion-proof chiller for testing new energy battery packs, relating to the field of battery pack testing technology. It includes an explosion-proof chiller body; a cylinder is fixedly connected to the inner wall of the bottom end of the explosion-proof chiller body; a test plate is fixedly connected to the top of the cylinder; a battery body is mounted on the top of the test plate; a connection socket is fixedly connected to the side end of the battery body; the battery body is placed on the test plate, and the cylinder raises the test plate and then suddenly lowers it, causing the battery body to fall onto the test plate after being suspended in mid-air, creating a bumping effect, thereby testing the battery body's anti-bumping effect. After the battery body is on the test plate, an impact ball rotates and impacts the battery body through an impact groove. A rotating cylinder causes the impact ball to rotate and impact the bottom of the battery body, generating vibration, which can test the vibration test effect of the battery body. This significantly improves the practicality and guiding significance of the test results, and helps improve the performance and safety of the battery body under complex working conditions.
Owner:SENYINGYUAN MASCH EQUIP (SUZHOU) CO LTD
Tunnel surrounding rock failure test system
ActiveCN222318698UAssess securityAchieve angle adjustmentMaterial strength using tensile/compressive forcesClassical mechanicsDynamic testing
The utility model discloses a tunnel surrounding rock destruction test system, which comprises a tracked robot 1, a surrounding rock dynamics test device 2 and a surrounding rock shooting assembly 3, the surrounding rock dynamics test device 2 is arranged on the tracked robot 1, and the surrounding rock shooting assembly 3 is arranged on the surrounding rock dynamics test device 2. The arranged tracked robot 1 can carry the surrounding rock dynamic testing device 2 to move to all positions of a tunnel, the surrounding rock dynamic testing device 2 is used for carrying out dynamic testing on surrounding rock at all positions of the tunnel, and in the testing process, surrounding rock images in the testing process can be collected in real time through the arranged surrounding rock shooting assembly 3; and subsequently analyzing according to the surrounding rock image, and evaluating the safety of the surrounding rock.
Owner:QINGHAI PROVINCIAL COMM CONSTR MANAGEMENT CO LTD +1
Safety test method for vehicle charging interface information
ActiveCN119520159AGuaranteed uptimeensure safetySecuring communicationData acquisitionSafety testing
The invention relates to the technical field of vehicle testing, in particular to a safety testing method for vehicle charging interface information, which comprises the following steps: sending normal and forged charging demand messages to a to-be-tested vehicle, and obtaining a demand response result of the to-be-tested vehicle; the vehicle to be tested is charged, normal signal data and forged signal data in the charging process are sent, and charging feedback information of the vehicle to be tested is collected; performing charging interruption forgery operation on the to-be-tested vehicle, sending a forgery charging interruption message, and obtaining a charging interruption response result of the to-be-tested vehicle; sending an invalid message to the to-be-tested vehicle for testing, and obtaining the charging system stability and the time verification capability of the to-be-tested vehicle; and evaluating the comprehensive performance of the to-be-tested vehicle and the charging pile under different attacks and forged data, and outputting a safety evaluation report. According to the method, the comprehensive performance of the vehicle and the charging pile under different attacks and forged data can be effectively evaluated, and a complete safety evaluation report is efficiently formed.
Owner:CATARC AUTOMOTIVE TEST CENT TIANJIN CO LTD
Test device for the swelling effect of single cells
The application relates to the battery technical field, in particular to a single cell expansion effect testing device. The single cell expansion effect testing device comprises a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are clamped on the two sides of the thickness direction of a single cell, the first clamping plate is provided with first sliders slidable along a second direction on the two sides along a first direction, the second clamping plate is provided with second sliders slidable along the second direction on the two sides along the first direction, the first sliders and the second sliders on the same side are connected with fasteners, the first clamping plate and the second clamping plate clamp the cell, the state that the single cell is clamped between other two cells in a battery pack is simulated, and the position of the fastener can be adjusted according to simulation results, so that the expansion effect of the single cell in the actual use of the battery pack is effectively simulated, the effect of the equivalent battery pack is achieved, the safety and reliability of the battery are more accurately evaluated, and the test cost is effectively reduced.
Owner:SUNWODA MOBILITY ENERGY TECHNOLOGY CO LTD
Security evaluation system and method for cryptographic algorithm
ActiveCN119484337AAssess securityImprove practicalityCryptographic attack countermeasuresKey sizeAlgorithm
The invention discloses a security evaluation system and method for a cryptographic algorithm, and belongs to the technical field of information security, the security evaluation system comprises a cryptographic algorithm import module, a basic test module, a theoretical test module, a practicability test module and a security evaluation module, the cryptographic algorithm import module is used for receiving a to-be-evaluated cryptographic algorithm source code imported by a user, and establishing an evaluation database, establishing a file for each imported to-be-evaluated cryptographic algorithm, and recording basic information of each cryptographic algorithm in the file, including a cryptographic algorithm name, a cryptographic algorithm type and a key length. According to the security evaluation system and method for the cryptographic algorithm, the cryptographic algorithm can be evaluated in multiple dimensions, the encryption and decryption correctness, the resource occupation condition, the mathematical basis and other theoretical levels are considered, the encryption speed, the side channel attack resistance and other actual use environment factors are also considered, the algorithm security is comprehensively measured, and the security of the cryptographic algorithm is evaluated. And the one-sidedness of single-dimension evaluation is avoided.
Owner:XIAN SHANGYI ANHUA INFORMATION TECH CO LTD
A comprehensive security assessment system based on trusted data space
ActiveCN119051983Bimprove securityimprove integrityEnsemble learningDigital data protectionAttackDataspaces
The present invention relates to the field of information security technology. The present invention provides a comprehensive security assessment system based on a trusted data space, which significantly improves the stability and security of the system by constructing a privacy data processing space, data encryption, blockchain storage and other technical means. The system has a flexible data processing mechanism, can maintain real-time monitoring and attack simulation capabilities in a high-traffic environment, and adopts a security assessment model based on a random forest algorithm to improve the accuracy and efficiency of security assessment. In addition, the present invention also supports data processing under multi-mode and multi-parameter conditions, meets the requirements of the trusted computing 3.0 architecture, and provides users with a comprehensive security analysis report. In summary, the present invention provides comprehensive security protection for the trusted data space, with significant beneficial effects.
Owner:TAIJI COMPUTER CORPORATION LIMITED
A kind of automobile battery power monitoring and control system
ActiveCN118596934B
The invention discloses a vehicle battery power monitoring and control system, which relates to the technical field of vehicle battery power monitoring and control, and comprises a data acquisition module, a user habit classification module, a road condition analysis module, a comprehensive analysis module and a display control module; the data acquisition module acquires user driving habit data, road data and vehicle battery data; the user habit classification module analyzes the habit data acquired, and obtains the user's driving habit power consumption by performing face recognition on different users; the road condition analysis module is used to analyze the road data to obtain the road condition power consumption coefficient; the comprehensive analysis module is used to collect the driving environment and conduct a comprehensive analysis to obtain the weather condition power consumption, the vehicle battery state coefficient and the estimated power consumption of the driving distance; this system helps the user to better understand the driving environment and the vehicle state, predict the problems that may be encountered in advance, and thus make more reasonable driving decisions to ensure driving safety and energy saving.
Owner:ZHEJIANG HUIXIN MICRO INTELLIGENT TECH CO LTD
An intelligent switch device for environmentally friendly gas ring network cabinet
ActiveCN119171332BStrengthen security controlGuaranteed safe operationImage enhancementImage analysis
The present invention relates to the technical field of power switches, and in particular to an intelligent switch device of an environmentally friendly gas ring network cabinet, comprising: a closed chamber; a switch assembly, arranged in the closed chamber, comprising a main switch and a plurality of auxiliary switches, wherein the plurality of auxiliary switches are used to individually control each power supply line, and the main switch is used to control the plurality of auxiliary switches; a detection assembly periodically acquires power supply line detection data and environmental detection data; a central control platform determines environmental safety based on environmental detection data, adjusts the environment, or alarms, determines line safety based on power supply line detection data, generates control instructions, and regulates the switch assembly; a self-test platform collects images in real time during the regulation process of the switch assembly, determines whether the switch assembly generates arc light and the actual frequency of the arc light, determines the safety of the switch assembly, and repairs or replaces the switch assembly based on the switch assembly safety judgment result. The present invention improves the safety of the switch device regulation process.
Owner:ZHEJIANG JIKONG ELECTRIC CO LTD
A method for calculating vertical surrounding rock pressure of tunnel arch support and surrounding rock debonding
The present invention discloses a method for calculating the vertical surrounding rock pressure of tunnel vault support and surrounding rock de-hollowing, including detecting the cavity behind the lining of the tunnel vault area, obtaining the position and size information of the tunnel vault de-hollowing area, obtaining the standard value of the tunnel vault vertical pressure, determining the influence range of the tunnel vault de-hollowing area, calculating the maximum vertical surrounding rock pressure in the vault de-hollowing area along the tunnel axis, and calculating the maximum vertical surrounding rock pressure outside the vault de-hollowing area along the tunnel axis. The present invention fully considers the three-dimensional characteristics of the change in the distribution of surrounding rock pressure when de-hollowing or cavity exists, and introduces the influence range of the tunnel vault de-hollowing area into the calculation method, which can more comprehensively evaluate the safety of the lining structure when the support and surrounding rock are de-hollowed, so that the load-structure model is more comprehensive and reasonable in the calculation of the "cavity behind the lining structure or the support surrounding rock de-hollowing problem".
Owner:CHINA UNIV OF GEOSCIENCES (BEIJING) +2
Method and system for evaluating curative effect of oral neifen' anpian combined with acupoint sticking for insomnia of heart-kidney disharmony type
This invention belongs to the field of clinical efficacy evaluation technology, specifically relating to a method and system for evaluating the efficacy of oral antisleep granules combined with acupoint application in treating insomnia of the heart-kidney disharmony type. The method includes the following steps: selecting subjects to form an observation group and a control group; the control group receiving oral zopiclone tablets; the observation group receiving the same treatment as the control group, combined with oral antisleep granules and acupoint application; observing and comparing indicators: comparing the indicators of the control group before and after treatment with those of the observation group before and after treatment to obtain the efficacy difference between the two groups. The indicators include: a Traditional Chinese Medicine (TCM) syndrome score, where a scale is used to score difficulty falling asleep, shallow sleep with easy awakening / difficulty falling back asleep after waking, early awakening, and lower back and knee weakness. The efficacy evaluation method and system of this application can evaluate the efficacy of oral antisleep granules combined with acupoint application in treating insomnia of the heart-kidney disharmony type.
Owner:GUANGZHOU ZENGCHENG HOSPITAL OF TRADITIONAL CHINESE MEDICINE
Multi-entropy source true random number generator, control method, medium, device and terminal
The invention belongs to the technical field of integrated circuits, and discloses a multi-entropy source true random number generator, a control method, a medium, a device and a terminal. A physical entropy source module is used to select three types of entropy sources, namely, resistor thermal noise, physical noise and radioactive decay. Each type of entropy source samples 32 bits respectively, and an initial sequence is obtained; an authentication communication module is used to perform authentication communication processing of a host computer to a lower computer, and an acquisition quantization module is used to perform sampling and quantization processing of a physical random source; an online detection module is used to perform frequency detection, poker detection, total run detection and linear complexity detection on an output sequence after sampling and quantization of a physical random source; a post-processing module is used to eliminate small deviations between original bits, reduce residual correlation in a random sequence, and make the output uniformly distributed. The invention has a high rate of random number generation, high quality of generated true random numbers, good security, strong scalability and portability, and is conducive to a comprehensive evaluation of the security of the SM3 algorithm.
Owner:XIDIAN UNIV
State safety assessment method and system for vehicle driving state
InactiveCN119107809AAssess securityAssess stabilityDetection of traffic movementVehicle drivingReliability engineering
The invention discloses a vehicle driving state safety assessment method and system, and relates to the technical field of vehicle driving safety assessment. According to the vehicle driving state safety assessment method, tire state data, engine state data and steering state data at each time point when a vehicle is in a driving state are obtained in real time and comprehensively analyzed respectively, and a driving safety state assessment index at each time point when the vehicle is in the driving state is obtained; according to the method, multiple key state data such as the tire state, the engine state and the steering state are obtained and analyzed in real time, the actual driving state of the vehicle can be comprehensively reflected, compared with a traditional evaluation mode only depending on a single parameter, the method can more accurately evaluate the safety and stability of the vehicle under various driving conditions, and the safety and reliability of the vehicle are improved. The state data of each time point is comprehensively analyzed.
Owner:HEILONGJIANG PROVINCIAL WATER CONSERVANCY SCHOOL (HEILONGJIANG WATER CONSERVANCY SENIOR TECH SCHOOL)
Method and device for diagnosing blocking degree of opening and closing coil iron core of circuit breaker based on feature fusion
PendingCN119622546Aaccurate diagnosisGuaranteed uptimeCircuit interrupters testingData acquisitionImaging data
The invention discloses a feature fusion-based circuit breaker opening and closing coil iron core blocking degree diagnosis method and device, and aims to solve the problems of low diagnosis precision, poor real-time performance, lack of multi-dimensional data fusion and the like in the prior art. According to the invention, the accuracy and the real-time performance of fault diagnosis of the circuit breaker can be improved, and the safety and the stability of a power system are enhanced. The diagnosis method comprises the following steps: (1) simulating iron core blocking faults of different degrees to form a plurality of fault category samples; (2) collecting an iron core motion image and a current signal to ensure the accuracy of data collection; (3) preprocessing the acquired image data; (4) extracting the dynamic characteristics of the movement of the iron core; (5) analyzing the synchronously acquired current signals, and extracting time domain features of the current signals; (6) carrying out model training on the fused multi-dimensional feature vectors by adopting a random forest algorithm; and (7) fault diagnosis.
Owner:ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID NINGXIA ELECTRIC POWER COMPANY +2
Ocean structure load loading method and device based on numerical simulation
ActiveCN119442724AAssess securityimprove securityGeometric CADSustainable transportationElement modelClassical mechanics
The invention relates to the technical field of ocean engineering, in particular to an ocean structure load loading method and device based on numerical simulation. According to the ocean structure load loading method based on numerical simulation provided by the embodiment of the invention, the ocean environment load of the ocean structure is calculated by establishing the numerical model for numerical simulation, so that fluid simulation calculation of the ocean structure in a real ocean environment is realized; meanwhile, the grid units of the numerical model are considered when the finite element model is established, so that loading of pressure data corresponding to the grid units as many as possible is conveniently realized according to grid parameters of the two models; therefore, the change condition of the load of the model at different nodes in a real marine environment can be more accurately fitted, the safety performance of the marine structure can be more accurately evaluated, and the design safety and reliability of the marine structure can be improved.
Owner:SHANGHAI INVESTIGATION DESIGN & RES INST CO LTD
Integrated ellipsoidal lower end socket model for serious accident analysis and modeling method
ActiveCN119647342AAssess securitySimulation is accurateNuclear energy generationDesign optimisation/simulationMechanical engineeringPressurised water reactor
The invention belongs to the field of pressurized water reactor serious accident analysis, and discloses an integrated ellipsoidal lower end socket model for serious accident analysis and a modeling method.According to the method, an approximate assumption that an ellipsoidal lower end socket is a rotary ellipsoidal shell is adopted, node division is conducted on the ellipsoidal lower end socket, and key geometric information of the ellipsoidal lower end socket is calculated; calculating transverse and radial heat exchange areas of an ellipsoidal lower seal head, the volume of a lower seal head section, the volume of a lower cavity unit connected with the lower seal head and the heat transfer area of a molten pool; and finally, an ellipsoidal lower end socket model is constructed. By adopting the method, the ellipsoidal lower end socket can be modeled correctly, and more accurate lower end socket model parameters are provided for integrated serious accident prediction and analysis of deformation failure behaviors of the lower end socket; the problems that an existing lower end socket model is poor in modeling precision of an ellipsoidal lower end socket and cannot model a deformed lower end socket are solved.
Owner:XI AN JIAOTONG UNIV
A test fixture for connecting components of automobile lamps before they are manufactured and shipped out of the factory
ActiveCN118883026BRealize the vibration effectEasy to fixVibration testingTesting alignment of vehicle headlampsCouplingElectric machinery
The present invention belongs to the technical field of automobile lamps, and in particular, is a connection component test tool for testing automobile lamps before they are manufactured and shipped, comprising a base plate, and also comprising a vibration device, a fixing device and a testing device installed on the base plate. The connection component test tool for testing automobile lamps before they are manufactured and shipped is provided with a vibration device, which can drive the lamps to be tested to vibrate and perform performance testing. The driving motor is connected to the cam group through a coupling to drive the rotation of the cam group. The rotation of the cam is converted into a lifting motion through a connecting rod, so that the pushing sleeve can be lifted and lowered in the lifting sleeve, and the pushing support sleeve generates vibration after lifting and lowering, achieving a vibration effect, so that the performance of the lamps can be tested, solving the technical problem that the existing lamp testing tool cannot fix the lamps, and different tooling needs to be replaced when performing different tests on the lamps, which reduces the detection efficiency.
Owner:SHENGZEDA TECH (NANTONG) CO LTD
A tax evasion identification penetration testing method
ActiveCN115631021Bhigh feasibilityRobustness testFinanceNeural architecturesBusiness enterpriseFinancial transaction
The application discloses a tax evasion identification penetration testing method, comprising the following steps: simulating the behavior of a tax evasion company individual committing a crime in a transaction network to generate a graph adversarial sample that makes a tax evasion detection model fail to detect a single fake enterprise, performing local testing on the detection model, and calculating the false recognition rate; simulating the behavior of a tax evasion company gang committing a crime in a transaction network to generate a graph adversarial sample that reduces the overall detection performance of the detection model on multiple fake enterprises, performing global testing on the detection model, and calculating the performance reduction; and comprehensively evaluating the security of the model in the actual tax evasion identification scene by combining the false recognition rate of the local testing and the performance reduction of the global testing. The application realizes the evaluation of the security of the tax evasion identification method, diagnoses whether the method has a vulnerability, and thus guarantees the security of the application of the tax evasion identification method in a tax scene with high security requirements.
Owner:XI AN JIAOTONG UNIV
Power grid load control method considering uncertainty of orderly power utilization
InactiveCN119675001AAssess stabilityAssess securitySingle network parallel feeding arrangementsPower oscillations reduction/preventionElectric power systemControl engineering
A power grid load control method considering uncertainty of orderly power utilization belongs to the field of power systems, and the invention provides a power grid load control method under uncertainty of orderly power utilization, and the method comprises the steps: building a load control model and constructing constraint conditions according to consideration of uncertainty of controlled load response power; depicting the uncertainty of the load power responding to load control by using an uncertainty set; establishing a robust stochastic optimization scheduling model, and realizing conversion from a stochastic optimization model to a deterministic optimization model through a robust linear optimization theory under an uncertain set; through the effect of load control participating in optimization operation, the necessity of load control uncertainty and the coordination effect of a robustness index and a fluctuation quantity index on economy and robustness, the problem of multiple uncertainties in the power grid optimization operation process is solved; and theoretical support is provided for stable operation and efficient energy utilization of a power grid.
Owner:JINZHOU ELECTRIC POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +1