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255 results about "Test analysis" patented technology

Chip signal integrity test analysis method, device and equipment and storage medium

The invention relates to the field of chip testing, in particular to a chip signal integrity test analysis method, device and equipment and a storage medium. The method comprises the following steps: extracting a chip performance index based on a chip design requirement document; performing saturation frequency excitation setting based on the chip performance index to generate an excitation test signal; performing a multi-port signal excitation test and parallel signal sampling based on the excitation test signal to generate a high signal-to-noise ratio response data set; obtaining a chip layout design file; performing chip communication link analysis on the chip layout design file, and constructing communication line layout data; performing signal mapping and waveform quality evaluation on the communication line layout data based on the high signal-to-noise ratio response data set to obtain a node signal distortion rate; and performing signal integrity quantization and theoretical signal integrity score comparison based on the node signal distortion rate, and marking a fault node. According to the invention, the chip testing efficiency is improved, and the signal abnormal part of the chip is accurately and efficiently detected.
Owner:SHENZHEN XINZHIYUAN TECHNOLOGY CO LTD

Code generation and repair method and device based on multi-round feedback of large language model

The invention discloses a code generation and restoration method and device based on multi-round feedback of a large language model, and the method comprises the following steps: 1, converting problem description into a structured tetrad (target, input, output and constraint) through a two-stage task demand deconstruction mechanism, and generating a pseudo-code frame according to the structured tetrad; 2, generating a plurality of candidate code schemes in parallel based on different implementation strategies; 3, selecting an optimal code implementation scheme through multi-dimensional evaluation; 4, generating an extended test case through boundary condition analysis and public test reasoning, and expanding a verification range; 5, classifying error types in combination with static analysis and dynamic execution information, and applying a special repair strategy; 6, providing detailed repair reasons and ideas by an interpretable repair mechanism; and 7, establishing a multi-round feedback repair verification iteration mechanism composed of testing, analysis, repair and verification. According to the method, the performance of an existing large language model in processing a complex programming task is effectively improved.
Owner:WUHAN UNIV +1

New energy broadband test analysis control method and system

The invention discloses a new energy broadband test analysis management and control method and system, and relates to the technical field of new energy detection and intelligent management and control, and the method comprises the following steps: obtaining a multi-window splicing frequency spectrum of a load switching edge, superposing phase lock consistency verification in a splicing frequency spectrum result, generating a frequency spectrum leakage suspicion chart, and carrying out the boundary constraint for energy track extraction; under the constraint of a spectrum leakage suspicion chart, an energy center track, a group delay curve and a phase derivative sequence are extracted, and a cross-frequency migration fingerprint is constructed and is used as a basic evidence for misjudgment traceability. By means of spectrum suspicion identification, feature fusion modeling, misjudgment traceability, label correction, energy reverse intervention and the like, accurate identification and closed-loop regulation and control of false operation caused by spectrum leakage are achieved, high identification accuracy, low misjudgment rate, high anti-interference performance and quick response capacity are achieved, and the operation stability and safety of a new energy field station are remarkably improved.
Owner:GUIZHOU KANGHE TECH CO LTD

Multi-agent cooperative RESTful API vulnerability test method

The invention relates to the technical field of network security, and discloses a multi-agent cooperative RESTful API vulnerability test method. Constructing a parameter structured representation by analyzing an API interface specification, generating a test value conforming to service semantics by using a large language model, and establishing a semantic request baseline representing normal service logic; constructing a multi-agent collaborative architecture including vulnerability reasoning, case generation, test execution, test analysis and test management; all the agents are coordinated to carry out iterative vulnerability testing through a signal mechanism and a state transition table, and API service analysis, test strategy customization, use case directional variation and execution, result study and judgment and strategy optimization are achieved; and finally generating a structured vulnerability report. According to the method, the problems of semantic blind areas, shallow analysis layers, insufficient adaptive capacity and the like are solved, security risks such as business logic vulnerabilities and sensitive data leakage in the RESTful API can be deeply detected, and the accuracy and coverage rate of vulnerability detection are remarkably improved.
Owner:SICHUAN UNIV

Method and system for testing and analyzing no-load and load characteristics of mining motor

The invention provides a mining motor no-load and load characteristic test analysis method and system, and relates to the field of intelligent image analysis, a Hall array sensor is arranged on a motor stator tooth portion to collect air-gap magnetic field distribution data, and a high-frequency signal injection method and a wavelet singular value decomposition technology are combined, so that the load characteristic of a mining motor is obtained. The air gap magnetic field distortion degree and the air gap dynamic eccentricity index are accurately calculated, and meanwhile a load dynamic compensation coefficient is generated to correct the motor output torque. Therefore, the dynamic characteristics of the motor in the no-load and load states can be comprehensively reflected, the accuracy of the load capacity evaluation of the mining motor is improved, and potential problems in the operation of the motor can be found in time, so that the performance of the motor is optimized, the service life of the motor is prolonged, and the safety and reliability of mining production are improved.
Owner:SHANDONG EXELON ELECTRIC CO LTD

Semiconductor packaging process dynamic optimization system and method

The invention discloses a semiconductor packaging process dynamic optimization system and method, and relates to the technical field of semiconductor packaging process optimization. A dynamic optimization system for a semiconductor packaging process comprises a data acquisition module, a fingerprint generation module, an index evaluation module, an optimization model construction module, a parameter solving module, a parameter bias module, a feedback detection module and a test analysis module. According to the method, a soft sensor model taking batch fingerprints as a core is introduced into a semiconductor packaging process, and dynamic process data and equipment state information are combined, so that high-precision prediction of a key process quality index and an energy consumption index is realized; through fusion of an extreme value theoretical model and a tail risk quantile evaluation method, deviation correction is carried out on a preliminary prediction result of the soft sensor, and robustness and safety of process quality prediction are improved.
Owner:JIANGXI TIANYI SEMICON CO LTD

Vulnerability detection method, electronic device, storage medium and computer program product

The invention provides a vulnerability detection method, electronic equipment, a storage medium and a computer program product, and relates to the technical field of computers. The method comprises the following steps: acquiring a code semantic map of a to-be-detected item; performing test analysis on the to-be-detected item to obtain a vulnerability detection path of the to-be-detected item; and sending a vulnerability detection request to the large language model. And if missing element information returned by the large language model for the vulnerability detection request is received, matching nodes in the code semantic map based on the missing element information. And for each code element in the missing element information, determining a target node from the matched node based on the semantic association degree between the node matched with the code element and the vulnerability detection path, thereby sending a new vulnerability detection request to the large language model. By implementing the method and the device, the code context information can be accurately provided when the big language model is adopted for vulnerability detection, and the vulnerability detection accuracy is improved.
Owner:NANJING GLORY SOFTWARE TECH CO LTD

Double-unfolding lifting type extra-high voltage alternating current withstand voltage test vehicle and use method thereof

The invention provides a double-unfolding lifting type extra-high voltage alternating current withstand voltage test vehicle and a use method thereof. The test vehicle comprises a high voltage test unit, a bearing unit, a double-unfolding lifting carriage and a fixed carriage, wherein the double-unfolding lifting carriage and the fixed carriage are installed on the bearing unit. The top end of the high-voltage test unit is provided with a metal grading ring, the outer side is provided with an inflation grading ring, and the inner side is fixedly provided with a high-voltage corona-free wire. The double-unfolding lifting carriage can form a left half carriage and a right half carriage to expose the high-voltage test unit when being laterally unfolded and descended, and can form a closed carriage to cover the high-voltage test unit when being lifted and retracted; a bearing and overturning unit is installed in the double-unfolding lifting carriage and can adjust the equipment angle of the high-voltage test unit. A test control system, a drive control system and a test analysis system are integrated in the fixed carriage. On the basis of reducing the space size of the test vehicle, the space insulation distance is guaranteed as much as possible, the installation efficiency of the corona-free wire and the integration degree of the test vehicle are improved, and the working efficiency of the voltage withstanding test is effectively improved.
Owner:HUNAN XIANGNENG SMART ELECTRICAL EQUIP

Suspension density intelligent matching and decision control system based on raw coal ash content

The invention belongs to the field of clean coal separation, relates to a data analysis technology, and aims to solve the problem that raw coal in dense medium coal separation cannot be automatically matched with suspension density in the prior art, in particular to a suspension density intelligent matching and decision control system based on raw coal ash content. The decision control platform is in communication connection with a density test module, a density matching module, a weight analysis module and a storage module; before clean coal separation, the ash content of raw coal is obtained and marked as an original value, the initial density of suspension liquid of the raw coal subjected to dense medium coal separation is marked as a density value, the clean coal ash content and the coal separation duration in the dense medium coal separation process are marked as a fine separation value and a coal separation value correspondingly, and a test period is generated; and marking all dense medium coal preparation processes in the test period as test processes. According to the method, the suspension liquid density can be tested and analyzed in the clean coal separation process, and the corresponding initial suspension liquid density can be directly matched according to the category and ash content of raw coal.
Owner:HUAIBEI MINING CO LTD

Interactive intelligent test analysis system based on natural language

The invention relates to an interactive intelligent test analysis system based on a natural language. The system comprises a natural language processing and dialogue management module used for receiving and presenting natural language information, analyzing user input, identifying operation intention and extracting key parameters, an intelligent parameter recommendation and execution module used for connecting and controlling the physical test instrument according to a language understanding result, and an intelligent parameter recommendation and execution module used for importing from the instrument or a file, the working area and management module is used for storing and managing test data; the data processing and analysis engine module is used for automatically selecting and executing a data analysis algorithm according to user intention and context; the natural language processing and dialogue management module analyzes and generates a structured intention based on a pre-trained large language model and a domain knowledge base; and the intelligent parameter recommendation and execution module automatically recommends and sets optimal instrument parameters according to the structured intention based on a pre-trained large language model and a domain knowledge base. According to the invention, complex signal processing is simplified into natural dialogue interaction with experts.
Owner:P&R MEASUREMENT INC

Multi-parameter test analysis equipment for complex environment

The invention discloses multi-parameter test analysis equipment for a complex environment, which belongs to the technical field of chemical or physical test analysis and comprises a test cabin, a comprehensive measurement and control system, a vacuum pumping system, a field environment simulation system and a climate temperature and humidity simulation system. The vacuum pumping system, the field environment simulation system and the climate temperature and humidity simulation system are sequentially arranged on the outer side of the test cabin body and are communicated with the test cabin body. By changing and adjusting the air pressure, the temperature, the humidity, the wind, the ultraviolet radiation, the space range and the air density in the specified range in the test cabin body, the extreme climate environment of any single parameter can be simulated, the special environment of combination, alternation and intersection of multiple parameters can also be simulated, and different types of test pieces can be made to have different functions. Test detection operation under a traditional atmospheric state, atrocious weather and an extreme environment of an outdoor environment is completed in the same space, so that multi-parameter data of different types of test pieces can be obtained.
Owner:YIWEI INTELLIGENT AEROSPACE TECHNOLOGY (YANTAI) CO LTD

Track circuit interference test analysis method, system and equipment

ActiveCN121364353AElectronic circuit testingFrequency spectrumTransient failure
The invention belongs to the technical field of rail traffic signals, particularly relates to a rail circuit interference test analysis method, system and equipment, and aims to solve the problems that a mixed interference source is difficult to accurately position, accidental faults cannot be captured and diagnosis is subjective. The method comprises the following steps: performing multi-channel synchronous acquisition and real-time storage on a voltage signal and a current signal of a track circuit; processing the original signal in real time, analyzing different frequency components through high-resolution spectrum analysis, and comparing with a preset threshold in combination with time domain analysis to trigger an alarm and generate a real-time analysis report; and performing intelligent analysis on historical data, performing verification and feature recognition on fault period data by establishing a probability model of a normal working condition, and generating a diagnosis analysis report. According to the method, the interference source can be accurately separated and positioned, the transient fault is automatically captured, objective and intelligent fault diagnosis is provided, and the efficiency and reliability of track circuit troubleshooting are remarkably improved.
Owner:CHINA RAILWAY ELECTRIFICATION ENGINEERING GROUP CO LTD

A method for realizing interpretable offline signature authentication based on a multi-modal large model

The present application relates to a kind of based on multi-modal big model to realize the method for interpretable offline signature authentication, comprising: constructing data set;Data set is preprocessed;Multi-modal big model is constructed;Wherein, multi-modal big model includes: visual Transformer submodel, big language submodel and local signature visual representation enhancement submodel;Using the data set after pre-processing, multi-modal big model is trained, and authentication model is obtained;Using authentication model, interpretable offline signature authentication is carried out.The present application can complete the authenticity identification of Chinese signature and english signature and give detailed explanation in natural language form.The authenticity identification accuracy of Chinese signature can reach more than 80%, and the authenticity identification accuracy of english signature can reach more than 90%.For different signature input, different test analysis report can be output, and different verification effect and analysis result can be obtained by adjusting reasoning parameter.
Owner:SOUTH CHINA UNIV OF TECH

A test device for vertical shaft wellbore surrounding rock-lining thermal interaction and a use method thereof

The application discloses a kind of vertical shaft shaft wall rock-lining thermal interaction test device and use method, it is related to mine construction engineering field.The thermal evolution characteristics of deep vertical shaft wall rock unloading cooling process, the thermal interaction between wall rock-lining can be tested and analyzed in laboratory.According to the following method: step one: test device assembly;Step two: wall rock initial state simulation;Step three: wall rock pressure relief cooling process;Step four: concrete shaft lining pouring;Step five: thermal test analysis.Application of the device for testing and analysis, the thermal response characteristics of wall rock unloading in high-temperature environment, the thermal interaction law between wall rock-lining, for accurately evaluating the stress condition of shaft lining under thermal coupling conditions of deep vertical shaft, lay a foundation.
Owner:CHINA COAL CONSTR GRP CO LTD

Feeding slide structure and test analyzer

This utility model relates to the field of in vitro diagnostic automation equipment technology, and discloses a feeding slide structure and a testing analyzer, including: a hopper having an inlet end and an outlet end. A slide is set at the outlet end and partially extends into the hopper. A receiving component is set at the part of the slide extending into the hopper, and is located at the landing point of the reaction cup after entering the hopper. The cup-guiding structure includes a guiding plate located above the slide, one end of which is rotatably set close to the outlet end, and the other end extends towards the slide. The guiding plate is used to correct the posture of the reaction cup entering the slide. The feeding slide structure provided by this utility model improves the correction efficiency of the reaction cup through the receiving component, reduces the time the reaction cup takes to pass through the hopper, can adapt to the feeding requirements of high-speed equipment, reduces the probability of cup stacking and jamming, and can also prevent malfunctions caused by cup overflow through the guiding plate.
Owner:SHENZHEN LINKRAY BIOTECH CO LTD

Interface testing method and device for business system, equipment and storage medium

The embodiment of the invention provides an interface testing method and device for a business system, equipment and a storage medium, relates to the technical field of testing, and can be applied to the field of financial science and technology. According to the method, field constraint information is obtained by analyzing a field constraint document of an interface, test data used for interface testing is generated based on the field constraint information, then target interface calling is carried out based on the test data, a calling result is obtained, the validity of the test data is analyzed based on the calling result, and a test analysis report is generated. According to the method, the test data conforming to the interface specification is quickly and comprehensively generated through the field constraint information of the interface, and the interface test efficiency and accuracy are improved. Besides, according to the method, the validity of the test data is intelligently analyzed based on the calling result, the test analysis report is generated, and the generation efficiency and reliability of the test analysis result are improved.
Owner:INDUSTRIAL AND COMMERCIAL BANK OF CHINA

Geotechnical engineering simulation test system

The invention relates to the technical field of engineering testing, and discloses a geotechnical engineering simulation testing system. The data acquisition module is used for acquiring multi-dimensional geological data of a test area; the model coupling module is used for dynamically coupling the geological three-dimensional model and the test area into a geological twinborn model; the simulation test module is used for applying test factors to the steady-state area and the sensitive area; the model prediction module is used for predicting a simulation state through a regional geological prediction model; the test analysis module is used for determining a simulation test grade and generating a simulation test report; according to the method, analysis resources of a simulation test can be focused on the sensitive area with higher risk according to the difference of mechanical properties and risk levels in the steady-state area and the sensitive area, so that the evaluation depth of the safety and reliability of the sensitive area in geotechnical engineering is improved, excessive resource consumption in the stable area is avoided, and the safety and reliability of the sensitive area in geotechnical engineering are improved. Therefore, the efficiency and the pertinence of the whole simulation test are obviously improved.
Owner:BUILDING MATERIALS GUANGZHOU ENG SURVEY INST CO

A track circuit interference test analysis method, system and device

ActiveCN121364353BElectronic circuit testingFrequency spectrumTransient failure
The present application belongs to the field of rail transit signal technology, and specifically relates to a rail circuit interference test analysis method, system and device, aiming to solve the problems of difficult accurate positioning of mixed interference sources, inability to capture occasional faults and subjective diagnosis. The present application comprises: multi-channel synchronous acquisition and real-time storage of voltage signals and current signals of the rail circuit; real-time processing of the original signals, analysis of different frequency components through high-resolution spectrum analysis, comparison with a preset threshold to trigger an alarm and generate a real-time analysis report in combination with time domain analysis; intelligent analysis of historical data, verification and feature recognition of fault period data through establishment of a probability model of normal working conditions to generate a diagnostic analysis report. The present application can realize accurate separation and positioning of interference sources, automatically capture transient faults, and provide objective and intelligent fault diagnosis, significantly improving the efficiency and reliability of rail circuit fault troubleshooting.
Owner:CHINA RAILWAY ELECTRIFICATION ENGINEERING GROUP CO LTD

Train airtightness forward design method and system, electronic equipment, storage medium and program product

The invention provides a train air tightness forward design method and system based on theoretical calculation and test analysis, electronic equipment, a storage medium and a program product. The method comprises the following steps: acquiring initial relational expression data of a first-row airtight train of the same type; determining a whole train dynamic sealing index optimization index of the newly built train; predicting a whole train dynamic sealing index of the newly-built train design scheme based on the initial relational expression data and judging whether the whole train dynamic sealing index reaches the standard or not; if the standard is reached, producing and manufacturing, and obtaining actual data of a newly-built train through a test to update relational data; and the updated data are used for air tightness forward design of subsequent trains of the same type. According to the method, a complete forward design closed loop is established, a rigorous theoretical system is formed by defining dynamic, static, theoretical and actual sealing indexes and establishing the quantitative incidence relation of the sealing indexes, accurate prediction and optimization in the design stage can be achieved, the air tightness performance of trains of the same type is improved through data iteration, the design efficiency is improved, and the method is suitable for large-scale popularization and application. The research and development cost is reduced.
Owner:ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD

Electromagnetic function test system

The utility model discloses an electromagnetic function test system, include: both side's stand, the stand middle part is installed with the feed source installation platform through the lifting structure, two groups of feed source assembly are installed above the feed source installation platform, the feed source installation platform bottom has the wave absorbing background structure, the wave absorbing background structure middle part places the sample to be measured, the feed source installation platform realizes horizontal direction transverse movement through the translation structure, has the rotary structure in the feed source assembly, thereby realizes the measurement process realizes up and down movement, left and right movement and angle rotation conversion, solves the technical problem of the measurement error of the test system in the prior art is serious, cannot simultaneously compatible P, L wave band material test and high frequency microwave test and cannot achieve the comprehensive electromagnetic function material test analysis of multiple projects.
Owner:CHENGDU SANHONG HI-TECH CO LTD

An unmanned aerial vehicle degree of freedom attitude test analysis system and method

The application discloses a kind of unmanned plane freedom degree attitude test analysis system and method, wherein a kind of unmanned plane freedom degree attitude test analysis system, freedom degree attitude simulation module, based on quaternion dynamics model, simulates the attitude change of unmanned plane;Sensor dynamic calibration module, automatically identifies and calibrates gyroscope zero offset, accelerometer scale error, magnetic compass hard iron / soft iron interference;Multi-throttle vector control module, respectively control motor throttle, simulate extreme working condition;Flight control algorithm verification module, real-time injection attitude error, assess convergence time, overshoot, steady-state error;Data fusion and visualization module, real-time fusion data, support multi-dimensional visualization;Automated test script module, support Excel process driven test;Authority and data security module, carry out hierarchical authority management, support test data encryption, operation log audit, parameter tamper prevention.
Owner:GUANGZHOU TUOCHE INTELLIGENT TECHNOLOGY CO LTD

Power equipment high-voltage test analysis system and method for multi-source data fusion and diagnosis

The invention discloses a power equipment high-voltage test analysis system and method for multi-source data fusion and diagnosis, and belongs to the technical field of power equipment detection and fault diagnosis, and the system comprises a data collection and input module which is used for obtaining the original data and environmental parameters of a high-voltage test; standard test regulations are stored in the regulation library and project management module, and the regulation library and project management module is used for managing test tasks and equipment files; the intelligent data processing engine is in communication connection with the data acquisition and input module and the regulation library and project management module, and is used for correcting original data according to environmental parameters and identifying fault types through multi-dimensional comparison and diagnosis; and the conclusion generation and report output module is in communication connection with the intelligent data processing engine and is used for integrating diagnosis and analysis results and automatically generating a test conclusion and a formatted report. According to the method, a key decision basis is provided for realizing predictive maintenance and state maintenance, and potential faults are effectively prevented.
Owner:STATE GRID QINGHAI ELECTRIC POWER COMPANY +1

Ship mechanical system multi-channel transmission path inverse substructure test analysis method and system

The invention provides a ship mechanical system multi-channel transmission path inverse substructure test analysis method and system, and the method comprises the steps: employing an inverse substructure analysis method, analyzing the characteristics of a substructure through testing and analyzing a frequency response function of a system level, carrying out the quantitative analysis of the contribution of each transmission path to the vibration noise of a ship mechanical system on the basis of not disassembling the system, and carrying out the analysis of the vibration noise of the ship mechanical system. The function of finding out the main acoustic weak points of the transmission path of the ship mechanical system is achieved. According to the method, the actual engineering experience and the data accumulation condition are combined, the sea communication system transmission path analysis is greatly simplified through the inverse substructure analysis method, and the method has wide application prospects in ship acoustics improvement and analysis.
Owner:CHINA SHIP DEV & DESIGN CENT

Lightweight ammonia storage tank filling and discharging performance test platform

The present application provides a kind of light weight liquid ammonia storage tank filling and discharging performance test platform, including light weight composite reinforced corrosion-resistant storage tank system, input or export gaseous ammonia to the storage tank to be tested by the ammonia supply and transportation system connected therewith;Light weight composite reinforced corrosion-resistant storage tank system is internally provided with multi-zone temperature monitoring system for real-time monitoring of temperature variation at different positions inside the storage tank;The light weight composite reinforced corrosion-resistant storage tank system is internally provided with internal gas circulation homogenization system for promoting gas flow inside the storage tank and improving temperature distribution;The control and safety protection system is used for real-time acquisition and regulation of storage tank internal pressure, liquid level, flow and temperature parameters, and safety pressure relief and protection under abnormal conditions;The present application can monitor and control the liquefaction process after ammonia is filled into the storage tank and the vaporization process when liquid ammonia is output, so as to test and analyze the temperature distribution, liquid level change, flow change and internal flow state during filling and discharging process.
Owner:FUZHOU UNIV

Ammonia cracking reaction testing system

This invention primarily relates to the field of ammonia cracking reaction technology. It discloses an ammonia cracking reaction testing system, comprising a temperature control module, an ammonia supply module, an ammonia cracking reaction module, and an analysis module. The temperature control module controls the target temperature for the ammonia cracking reaction. The ammonia cracking reaction module is used to crack the ammonia gas supplied by the ammonia supply module at the target temperature to obtain a mixed gas. The analysis module is used to analyze the composition of the mixed gas and obtain ammonia cracking reaction test data. This application enables detailed testing and analysis of the performance and stability of ammonia cracking reaction devices and catalysts, thereby generating a large amount of low-cost ammonia cracking experimental data.
Owner:FOSHAN XIANHU LAB

Natural law selection for ceramic composite brazing high-entropy filler metal and preparation method

The application discloses a preparation method of a high-entropy brazing filler metal for ceramic composite brazing, and comprises the following steps: (1) selecting elements, selecting high-purity materials, mixing and smelting; (2) performing metallographic test analysis, observing the structure and morphology, selecting a maximum single-phase region, and determining the elements in the region and the corresponding atomic percentage; (3) selecting high-purity materials, mixing and smelting; (4) performing metallographic test analysis, observing the structure; if the structure and component distribution are uniform, the preparation is completed; if the structure and component distribution are not uniform, the element composition of the maximum single-phase region is screened out, the elements in the region and the corresponding atomic percentage are determined, steps (2) and (3) are repeated until the structure and component distribution are uniform, and the preparation is completed. The high-entropy brazing filler metal obtained through the method is more suitable for homogenous or heterogeneous brazing of light-weight high-temperature-resistant ceramic matrix composites.
Owner:BEIHANG UNIV

A method and system for measuring blast pressure and crack propagation around a blast hole

The present application relates to the field of explosion test analysis, in particular to a method and system for measuring explosion pressure and crack propagation process around a blast hole, the method comprising the following steps: performing blast simulation on a blast physical model and obtaining simulation data; analyzing the blast stress distribution and crack propagation law around the blast hole of the blast physical model according to the simulation data; obtaining the explosion pressure around the blast hole in combination with the blast stress distribution and the simulation data; and obtaining the crack propagation process around the blast hole in combination with the crack propagation law and the simulation data. The present application simulates and analyzes the blast stress distribution and crack propagation law around the blast hole of the blast physical model, thereby obtaining the explosion pressure and crack propagation process around the blast hole. Based on this, the experimental scheme of the blast physical model is adjusted and the simulation is continuously adjusted, thereby continuously improving the reliability of the simulation results.
Owner:KUNMING UNIV OF SCI & TECH

Time delay test analysis method for A664 photoelectric converter

PendingCN121864647ASolve the problem of delay testingEnsure physical structural integrityTransmissionConvertersTime delays
The invention provides a time delay test analysis method for an A664 photoelectric converter, and relates to the field of computer communication. The time delay test system for the A664 photoelectric converter comprises test equipment, the A664 photoelectric converter to be tested and an oscilloscope, an A664 photoelectric converter is analyzed, an A664 photoelectric converter time delay testing environment is constructed, the testing environment is looped back through testing equipment, and receiving and transmitting time delay introduced by the testing equipment is measured; through an overall time delay test environment of the A664 photoelectric converter, ns-level delay of an electric port-to-optical port and an optical port-to-electric port of the A664 photoelectric converter is tested and analyzed. By means of the method, it is guaranteed that physical changes are not formed on the tested piece, the physical structure integrity of the A664 photoelectric converter of the tested device is guaranteed, the testing accuracy of photoelectric conversion time delay is greatly improved through the minimum testing device architecture design, and accurate time delay data are provided for deterministic analysis of the A664 network.
Owner:XIAN AVIATION COMPUTING TECH RES INST OF AVIATION IND CORP OF CHINA

Method for estimating tire dust microplastic emission, spatial distribution simulation method and system

The application discloses a kind of tire dust micro plastic emission estimation method, spatial distribution simulation method and system. Including: first, the vehicle population of simulation area, vehicle average mileage, road congestion level, road surface material and heavy vehicle quantity proportion are obtained.Then according to road congestion level, road surface material and heavy vehicle quantity proportion, correction coefficient and correction coefficient are set.Fusion vehicle population, vehicle average mileage, correction coefficient and correction coefficient are then estimated tire dust micro plastic emission.Afterwards, the simulation area is spatially discretized, and the road length proportion of grid is counted.Finally, combined with road length proportion and tire dust micro plastic emission, the grid tire dust micro plastic emission of grid is calculated, and the spatial distribution of tire dust micro plastic in simulation area under grid scale is determined.No need for field sampling and test analysis, improve the efficiency of micro plastic spatial distribution simulation, reduce monitoring cost and monitoring time.
Owner:CHONGQING GEOMATICS & REMOTE SENSING CENT

Sample loading system for synchronous thermal analysis of photovoltaic cell silver paste

The utility model relates to the field of material thermal analysis, in particular to a sample loading system for synchronous thermal analysis of photovoltaic cell silver paste, which comprises a partition module and a blowing module, the partition module is of a cylindrical structure with openings in the two ends, the partition module is arranged in the crucible, and photovoltaic cell silver paste to be analyzed enters the crucible through the openings in the two ends of the partition module; and the blowing module is used for flattening the photovoltaic cell silver paste to be analyzed in the crucible in a blowing manner. According to the utility model, the blocking module is used for preventing the side wall of the crucible from being accidentally stained when STA analysis sample loading is carried out on the photovoltaic cell silver paste. And the blowing module sprays gas with proper force, so that the silver paste is uniformly distributed in the accommodating body and flatly laid at the bottom of the crucible. Further, the temperature difference of different parts of the sample in test analysis is reduced, more accurate thermal reaction temperature is obtained, the consistency of thermal analysis curve shapes is improved, and the research of photovoltaic cell silver paste sintering and photovoltaic cell preparation processes is effectively supported.
Owner:CHINA ELECTRONICS STANDARDIZATION INST