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286 results about "Test evaluation" patented technology

Definition: Test & Evaluation (T&E) is the process by which a system or components are compared against requirements and specifications through testing. The results are evaluated to assess progress of design, performance, supportability, etc.

Method and device for testing and evaluating industrial park integrated management system

The invention discloses a test evaluation method and device for an industrial park integrated management system. The method comprises the following steps: acquiring a performance index data set of the industrial park integrated management system; the performance index data set comprises a performance index test data subset of each subsystem; the performance index test data subset comprises a test data sequence of each performance index; pre-processing the performance index data set to obtain a to-be-evaluated data set; and performing test evaluation processing on the to-be-evaluated data set to obtain a performance evaluation result value of the industrial park integrated management system.
Owner:INST OF LOGISTICS SCI & TECH ACAD OF SYST ENG ACAD OF MILITARY SCI

Software function automatic test and evaluation method based on multi-modal large model

The invention discloses an automatic software function testing and evaluating method based on a multi-modal large model, and particularly relates to the field of non-embedded software function testing and evaluating, which comprises the following steps: collecting software texts, images and structured data, generating corresponding feature vectors, aligning through a cross-modal comparison algorithm, and constructing a multi-modal testing and evaluating data set; deep features of all modes are extracted through a mode exclusive encoder, and a unified multi-mode function vector is output based on information entropy dynamic weighted fusion; constructing triple training data, and optimizing the multi-modal large model by combining a joint loss function with an enhanced training strategy; and finally, deploying the model at a cloud end and an edge node, carrying out real-time triggering test by docking a CI / CD process, and realizing functional integrity verification, interactive compliance detection and accurate defect positioning through semantic vector comparison, graph isomorphism rate calculation and cross-modal attention backtracking. According to the scheme, the test comprehensiveness and precision are improved, and the rapid iteration requirement of software is met.
Owner:JIANGSU GONGDIANBAO IND TECH CO LTD

Electromagnetic safety test system and method for switch integrated equipment

The invention provides an electromagnetic safety test system and method for switch integrated equipment, and relates to the technical field of power system switch equipment. The system is used for solving the problems that multi-parameter dynamic coupling analysis of a traditional test is insufficient, transient and gradual interference is difficult to capture by a fixed window, and comprehensive quantitative evaluation is lacked, and comprises a test module, an interference analysis module and a test evaluation module, calculating a total coupling interference variable; the interference analysis module draws a change curve based on the total coupling interference variable, analyzes a threshold over-area, a threshold duration and a peak value, and generates an interference risk index; and the test evaluation module calculates a total evaluation value and a threshold super-window proportion by combining the risk indexes of the windows, and divides safety levels. According to the invention, multi-parameter dynamic coupling simulation is realized, different types of interferences are accurately captured, a full-period dynamic evaluation system is constructed, and the accuracy of electromagnetic safety performance judgment of equipment is improved.
Owner:HUBEI ELECTRIC POWER CO JINGZHOU POWER SUPPLY CO

Testing software and IT products by evaluating security maturity and risk of change

Systems and methods for testing, evaluating, and scoring IT products (e.g., software) and product updates from a technology provider are disclosed herein. More specifically, organizational assessment may be performed to evaluate the provider's development lifecycle processes and generate organization maturity scores. Architecture assessment may be performed to evaluate the system-level and software-level architectures associated with the application and generate architecture maturity scores. Product verification may be performed via automated testing and penetration testing to generate verification maturity scores. The organization maturity scores, architecture maturity scores, and verification maturity scores may be used to provide recommendations to the provider and also combined into an overall maturity score, which may serve as a comprehensive summary of the evaluation. These generated scores inform and expedite testing of future iterations of the product.
Owner:CENTER FOR INTERNET SECURITY INC

Digital twin simulation test method and system applied to building system

The invention provides a digital twinborn simulation test method and system applied to a building system, and the method comprises the steps: firstly, carrying out the construction processing of a knowledge graph of physical parameters of the building system, generating a physical parameter knowledge graph comprising structure, equipment, environment parameter nodes and a plurality of correlation edges, and then constructing a digital twinborn graph model based on the knowledge graph, the method comprises the following steps of: generating a graph test scene configuration sequence according to a model, including a node parameter disturbance rule and the like, executing a graph coupling simulation test by inputting the sequence into the model, and generating a graph test response data set including a node response sequence and the like; and finally, outputting a digital twin simulation test evaluation report based on the data set, wherein the report covers node response characteristics and the like. According to the method, the building system is comprehensively and accurately simulated, and the test efficiency, accuracy and comprehensiveness are improved.
Owner:LIDI GRP CO LTD

Performance test evaluation method, system and equipment for power grid credential environment and medium

The invention provides a performance test and evaluation method, system and device for a power grid credential environment and a medium, and the method comprises the steps: obtaining real-time data of each node through employing a distributed test probe and a data flow distribution strategy, and constructing a digital twinborn body of the power grid credential environment; the digital twin body comprises twin nodes corresponding to the nodes; extracting multi-dimensional performance test data of each twin node under the performance test load by adopting a classification dimension convergence method; and based on the performance test prediction data of each twin node, performing risk assessment on each twin node by adopting an entropy weight-comprehensive sorting algorithm. According to the method, dynamic load balance of each node is ensured through a data traffic distribution strategy, normal operation of the power grid credential environment is prevented from being influenced during test evaluation, and the method is suitable for a complex scene in which the power grid credential environment is easily impacted by a high load; data evaluation is carried out through performance test prediction data, data exception can be captured, and potential performance risk bottlenecks of a power grid credential environment can be found in advance.
Owner:BEIJING GUODIANTONG NETWORK TECH CO LTD +1

GIS equipment withstand voltage test system and method

The invention provides a GIS equipment withstand voltage test system and method, and relates to the technical field of GIS equipment withstand voltage test. Comprising the steps of obtaining parameter information and installation environment data of GIS equipment, constructing a three-dimensional digital twinborn model of the GIS equipment in combination with an electric field simulation engine, generating a withstand voltage test scheme and planning an optimal path. Acquiring partial discharge data and insulation resistance data under different voltage stresses by using an AI noise reduction algorithm according to the optimal path, carrying out multi-modal fusion processing on the partial discharge data and the insulation resistance data, extracting features by using a deep learning model, obtaining insulation defect and performance attenuation data, and carrying out multi-modal fusion processing on the insulation defect and performance attenuation data. And carrying out space mapping association with the three-dimensional digital twinborn model to generate a GIS equipment withstand voltage test evaluation report, thereby providing a powerful basis for equipment operation and maintenance. According to the invention, the three-dimensional digital twinborn model is constructed to generate the GIS equipment voltage withstanding test evaluation report, so that the accuracy of the GIS equipment voltage withstanding test is improved.
Owner:湖南长高电气有限公司

Intelligent networked automobile automatic driving performance evaluation method based on simulation test

The invention relates to the technical field of intelligent automobile test and evaluation, in particular to an intelligent networked automobile automatic driving performance evaluation method based on simulation test, which comprises the following steps: S1, generating a reference steady-state traffic flow in a simulation platform; s2, injecting traffic flow disturbance parameters into the reference steady-state traffic flow, and recording whole-course operation data of the reference steady-state traffic flow; s3, extracting performance indexes of the tested vehicle; s4, calculating a deviation degree, and quantifying the deviation degree as a performance attenuation rate; s5, performing weighted fusion to obtain a comprehensive disturbance tolerance index; and S6, outputting an evaluation conclusion of the automatic driving performance of the tested vehicle according to the comprehensive disturbance tolerance index. According to the method, the reference traffic flow is constructed, the disturbance is injected, the performance attenuation rate is quantified, and then the disturbance tolerance index is generated through weighting, so that objective, comparable and interpretable comprehensive evaluation of the automatic driving performance of the intelligent networked automobile is realized.
Owner:SHAANXI VOCATIONAL & TECHNICAL COLLEGE

Automatic driving scene library dynamic generation method based on multi-modal data fusion

The invention discloses an automatic driving scene library dynamic generation method based on multi-modal data fusion, belongs to the field of automatic driving testing, and solves the problems of insufficient coverage of extreme working conditions, data splitting and single evaluation of a static scene library. According to the technical scheme, the method comprises the following steps: establishing a distributed data acquisition layer, and accessing a vehicle-mounted terminal and a V2X roadside equipment data stream through a federated learning framework; constructing a multi-modal semantic coding layer, fusing data extraction features, converting laser radar point cloud data into a space-time constraint matrix, and outputting a scene DNA coding sequence; deploying a dynamic evolution engine, mapping the DNA coding sequence into a traffic flow state parameter, and calculating an entropy gradient field; and starting a virtual-real co-occurrence scene generator, receiving the coordinates of the high-entropy region and the physical interference intensity parameters, performing simulation to generate a controlled physical interference test scene, injecting a group interaction rule based on behavior uncertainty, and finally outputting a dynamically updated scene library and a risk report for automatic driving system test evaluation.
Owner:BEIJING SMART CAR MZONE CO LTD

Storage equipment testing method and device and electronic equipment

The invention provides a storage equipment testing method and device and electronic equipment, and can be applied to the technical field of computers. The method comprises the steps that an initial test script is executed, target configuration parameters and target test strategies of the storage device are obtained, the initial test script comprises a diagnosis script and a test strategy matching script, the target configuration parameters are obtained by executing the diagnosis script, and the test strategy matching script is used for selecting the target test strategies based on the target configuration parameters; according to the target configuration parameters and the expected use duration of the equipment, a target test period is determined, and the target test period is a test period obtained after an initial test period in the initial test script is compressed; and obtaining a test evaluation report by using test execution information obtained by testing the storage device based on the target test period and the target test strategy.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD

Intelligent test method and system for distribution automation terminal compatible with multiple protocols

The invention discloses a multi-protocol compatible intelligent test method and system for a power distribution automation terminal, and relates to the technical field of power distribution terminal test. The method comprises the following steps: acquiring basic information and historical test data of a tested terminal; automatically identifying and matching a communication protocol through a multi-protocol adaptive identification model, and generating a protocol conformance test template; according to the template, executing signal injection and collecting real-time response data, and calculating a terminal response matching degree and a protocol analysis accuracy parameter; and inputting the parameters into the test result evaluation model, and outputting a test result. Comprising an information acquisition module, a protocol identification and template construction module, a test execution and data acquisition module and a test evaluation module. According to the invention, automatic identification, standardized testing and intelligent evaluation of the multi-protocol terminal are realized, the testing efficiency, consistency and accuracy are improved, and the method is suitable for testing and diagnosis of distribution automation terminals of different models.
Owner:GUANGZHOU ONLY XINPU ELECTRICAL AUTOMATION CO LTD +1

Test and evaluation system and method for coupling of driving task performance and sitting posture comfort of special vehicle

The invention discloses a special vehicle driving task performance and sitting posture comfort coupling-oriented test evaluation system and method, and the system comprises a data collection module which is used for obtaining multi-modal driving data; the index calculation module is used for extracting and quantifying characteristic indexes from the multi-modal driving data to obtain a driving task performance evaluation index set and a driving sitting posture comfort evaluation index set; the comprehensive evaluation and time domain modeling module constructs a driving task performance-sitting posture comfort coupling-oriented comprehensive quantitative model based on the driving task performance quantitative model and the driving sitting posture comfort quantitative model; and finally, comprehensively scoring the state of the driver by using the comprehensive quantitative model, and establishing a nonlinear mapping relationship between the driver state comprehensive score and the task time to obtain a dynamic change trend of the driver state comprehensive score.
Owner:CHONGQING UNIV

Simulation test system and method for visual perception module of automatic driving system

The invention discloses a simulation test system and method for a visual perception module of an automatic driving system, and the system comprises a sample generation module which is used for generating a confrontation sample; the data fusion module is used for determining a filtering algorithm based on the system type of the automatic driving system and fusing the confrontation samples based on the filtering algorithm so as to output a fusion data set of space-time fusion; the multi-dimensional test module is used for performing multi-dimensional test on the fused data set based on the visual perception module to obtain a multi-dimensional test result; and the test evaluation module is used for comparing the multi-dimensional test result with the test standard data to obtain a comparison result, obtaining a test result of the visual perception module based on the comparison result, forming confrontation samples under multiple scenes, inputting a fusion data set with the confrontation samples into the visual perception module, and outputting the test result of the visual perception module. Therefore, the robustness and safety of the visual perception module can be comprehensively and accurately tested and evaluated.
Owner:ZHEJIANG INSTITUTE OF QUALITY SCIENCES

Satellite-borne router network access test system and test method thereof

PendingCN121792411ARadio transmissionSatellite routerTest phase
The invention provides a satellite-borne router network access test system and a test method thereof. The satellite-borne router network access test system comprises a constellation network node simulation platform, a performance test evaluation platform, an interface protocol conversion device, a constellation service traffic simulator and a network router digital model. Through joint simulation of the virtual nodes and the physical nodes, a simulation test platform can be provided for design and optimization of the satellite-borne router through scene simulation of a complex satellite network environment in a design stage, and the development efficiency is improved; on the other hand, in the product development and system test stage, the full-constellation operation scene can be simulated, the function and the performance of the satellite-borne router can be assessed and verified in the full-constellation scene in the ground environment, the method is particularly suitable for the low-orbit large-scale batch emission large-scale networking scene, the test coverage and the test effectiveness of the product are greatly improved, and the test cost is reduced. Development risks of insufficient verification, delayed verification time and the like before launching are effectively released, and meanwhile, the test verification cost is reduced.
Owner:BEIJING RES INST OF TELEMETRY

Automatic test and evaluation method and system for load identification algorithm

The invention discloses an automatic test and evaluation method of a load identification algorithm, and discloses a system with the automatic test and evaluation method of the load identification algorithm. According to the automatic test and evaluation method of the load identification algorithm, system construction is carried out from three aspects of test scene construction, scene complexity grading and intelligent evaluation, and self-adaptive construction and complexity calculation of a load identification test scene and multi-dimensional evaluation of the load identification algorithm are realized. The training and verification of the load identification model can complete standardized test evaluation without depending on a large amount of home-entry actual measurement data, the problems that a traditional method is single in test scene, scene complexity cannot be evaluated, and evaluation standards are not uniform are solved, and the quantifiable evaluation level and engineering application reliability of the load identification technology are effectively improved.
Owner:CHINA ELECTRIC POWER RESEARCH INSTITUTE CO LTD +3

Self-adaptive cruise function test method and device, electronic equipment, medium and product

The invention discloses an adaptive cruise function test method and device, electronic equipment, a medium and a product. The method comprises the following steps: in a pre-constructed test scene, acquiring surrounding environment information of a test vehicle to obtain environment sensing data; constructing a vehicle surrounding environment model according to the environment perception data; according to the vehicle surrounding environment model and a preset adaptive cruise control strategy, adaptive cruise control is carried out; acquiring operation data generated when adaptive cruise control is carried out in the test scene; and analyzing the operation data according to a preset performance index to obtain a test evaluation result for evaluating the performance of the adaptive cruise control system. The method can solve the problem that a traditional adaptive cruise test method is insufficient in test coverage in a complex dynamic scene.
Owner:CHINA FAW CO LTD

Three-dimensional multi-person attitude estimation method for solving shielding and related device

The invention discloses a three-dimensional multi-person attitude estimation method for solving occlusion and a related device, and belongs to the technical field of computer vision. The method comprises the following steps: firstly, acquiring a human body posture data set and dividing the human body posture data set into a training set and a test set by constructing an OCC-MotionBERT model; training data are input into the model for training, and a three-dimensional human body posture estimation model is obtained and evaluated through testing; and finally, inputting a to-be-detected image or video into the model, and outputting three-dimensional key point coordinates. According to the model, DSTFormerV2 is adopted as a feature extraction network, graph convolution and a double-flow space-time attention mechanism are combined, inter-joint space correlation and time sequence dynamics are effectively modeled, and a mask self-encoding strategy is introduced to improve the reasoning ability for shielded key points; uncertainty modeling is introduced into the regression head part, and three-dimensional coordinates and confidence coefficients are output. According to the method, the attitude complementation capability and the prediction robustness in a shielding scene are remarkably enhanced, and the precision and the practicability of three-dimensional multi-person attitude estimation are improved.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Intelligent ship navigation digital simulation method and system

The invention discloses a ship intelligent navigation digital simulation method and system, and relates to the technical field of intelligent navigation and digital simulation, and the method comprises the following steps: 1, receiving a test task submitted by a user, the test task comprising task basic information, tested object information and scene configuration information; 2, calling a digital simulation model based on the scene configuration information, wherein the digital simulation model comprises a ship dynamics model, an environment model and a navigation algorithm model; 3, executing a test task, and collecting ship motion data, environment data and decision control data in real time in a simulation process; 4, processing and analyzing the collected data, and generating a test evaluation report; and 5, displaying the simulation process and result in real time through a visualization module.
Owner:BEIJING DIGITAL YIZHI TECH DEV CO LTD

Testing method, controller and testing device for refrigeration equipment

The invention discloses a test method of refrigeration equipment, a controller and a test device. The method comprises the following steps: determining a first temperature value of a target chamber of the refrigeration equipment; the first temperature value is determined by temperature values of a plurality of preset temperature measuring points in the target chamber under the no-load condition; determining a second temperature value of a target chamber of the refrigeration equipment; the second temperature value is determined by the temperature values of a plurality of preset temperature measuring points in the target chamber under the loading condition; and the temperature stability of the target chamber is determined according to the first temperature value, the second temperature value and a test evaluation standard corresponding to the current loading condition of the target chamber. A first temperature value of a target chamber under a no-load condition and a second temperature value of the target chamber under a loading condition are respectively measured, and the temperature stability of the target chamber is determined based on the first temperature value, the second temperature value and a test evaluation standard corresponding to the current loading condition of the target chamber. Therefore, the capability of maintaining the temperature stability of the target chamber under the specific loading condition can be determined.
Owner:MIDEA BIOMEDICAL CO LTD

Fireproof performance testing and evaluating system for reinforced concrete structure

The invention discloses a reinforced concrete structure fire resistance testing and evaluating system, and relates to the technical field of fire resistance testing, the reinforced concrete structure fire resistance testing and evaluating system comprises a base, the upper end face of which is fixedly provided with a bin body; the hydraulic cylinder is fixed on the bin body; the loading assembly is fixed at the output end of the hydraulic cylinder; the loading disc is fixed on the lower end face of the loading assembly, and a heat insulation disc is fixed on the lower end face of the loading disc; the heat insulation disc is sleeved with the protection barrel, and a plurality of sensors are installed in the protection barrel; the heating assembly is fixed on the base, and the heating assembly and the protective cylinder are coaxially arranged; buffering is provided when the test piece is heated to expand or deform, and the two stabilizing plates can be opened and closed through the linkage assembly, so that auxiliary clamping force is provided, and clamping stability is improved.
Owner:UNIV OF SCI & TECH BEIJING

Data source access test method, system and device of credit platform and medium

The invention relates to a data source access test method and system of a credit platform, computer equipment and a storage medium, and the method comprises the steps: receiving test configuration information of a data source, and generating an access test task of the data source based on the test configuration information; identifying a distribution object accessing the test task; distributing the test message of the access test task to a distribution object, and receiving test sample data uploaded by the distribution object; uploading the test sample data to a data open platform, and sending a test data downloading notification to a supplier of the data source; acquiring a data test result of the supplier based on the test sample data from the data open platform; feeding back the data test result to the distribution object, and receiving test evaluation information of the distribution object based on the data test result; and feeding back test evaluation information of the data test result to the operation user, so that the operation user judges whether to access the data source based on the test evaluation information. According to the method, automatic processing of the data source access test is realized.
Owner:SHANGHAI SHUHE INFORMATION TECH CO LTD

Test method and device, electronic equipment and storage medium

The invention provides a testing method and device, a storage medium, electronic equipment and a program product, and relates to the field of chip research and development, in particular to the technical field of chip testing and operator updating. According to the specific implementation scheme, based on chip parameters of a to-be-researched and developed chip, an operation environment used for operating a first operator is configured on a simulator used for simulating the to-be-researched and developed chip, and a first simulation chip is obtained; based on the hardware parameters of the reference hardware, configuring a running environment for running a second operator on the reference hardware to obtain a reference chip; determining a first test result and a reference result; and based on the first test result and the reference result, performing test evaluation on the to-be-researched and developed chip, and determining a test evaluation result of the to-be-researched and developed chip.
Owner:KUNLUNXIN TECHNOLOGY (BEIJING) CO LTD

Test processing method and apparatus

Embodiments of the present specification provide a test processing method and device, wherein the test processing method comprises: determining an abnormality prevention and control index of a first test terminal by means of object features and relationship features of an abnormality occurrence terminal and aggregated object features in a model training process of a graph embedding model through federated learning; determining a relationship state between objects in an object set of a second test terminal corresponding to an abnormality occurrence server by means of object features of the second test terminal, and determining an abnormality prevention and control index of the second test terminal according to the relationship state; and sending the abnormality prevention and control index of the first test terminal and the abnormality prevention and control index of the second test terminal to a test evaluation platform.
Owner:ZHEJIANG UNIV +1

A pre-training-fine-tuning-based precipitation runoff time series simulation method

The application provides a pre-training-fine-tuning-based precipitation runoff time series simulation method, and belongs to the field of hydrological simulation. First, a consistent hydro-meteorological data set for global multi-basin pre-training and target basin fine-tuning is obtained, an LSTM runoff prediction model is constructed, a base model parameter weight is obtained through global multi-basin pre-training, the base model parameter weight is migrated to the target basin, the LSTM network layer parameter is frozen and only the regression output layer is fine-tuned, and test evaluation is carried out in the target basin. The application learns the transferable hydrological response on a large sample of global multi-basins first, and then performs light fine-tuning in the target basin, which can effectively improve the prediction accuracy and cross-region generalization ability in the data scarce area, and is convenient for rapid deployment.
Owner:DALIAN UNIV OF TECH

An electronic device high-g impact characteristic test evaluation apparatus and method

PendingCN122108505AShock testingAccelerometerPulse shaper
The application relates to the field of impact dynamics tests, and particularly discloses an electronic instrument high-g-value impact characteristic test evaluation device and method. The device comprises an adapting section, a pulse shaper, and a base. The adapting section is coaxially connected with the tail of a high-speed gas gun launch tube to form a radially constrained loading channel and is movably connected with an impact mass. The pulse shaper is arranged in the adapting section. The base is slidably connected in the adapting section and located behind the pulse shaper, and is used for bearing the load transmitted by the impact mass when the impact mass hits the pulse shaper. The base has a front cavity and a rear cavity, and the rear cavity contains a measuring body. A diaphragm pressure gauge is arranged on the front end impact surface of the base, a base accelerometer is arranged in the front cavity, and a multi-parameter sensor is arranged in the measuring body. The device can accurately obtain an excitation load, realize distributed synchronous measurement of multiple physical quantities, has reliable signal line protection and kinetic energy absorption mechanism, and improves the accuracy and reliability of performance evaluation of electronic instruments and protective components of the electronic instruments under a high-g-value impact environment.
Owner:ZHONGBEI UNIV

Shadow mode-based data acquisition system and acquisition method

The invention discloses a shadow mode-based data acquisition system and an acquisition method. The system comprises a shadow monitoring module, a time synchronization module, a transcoding mapping module and a security isolation mechanism module. According to the embodiment of the invention, the security isolation mechanism module and the shadow monitoring module are arranged, so that the data acquisition system is decoupled from the control link of the tested unmanned equipment, and zero-interference non-intrusive acquisition of the test data of the tested unmanned equipment can be realized; multi-source data synchronization is realized by setting a time synchronization module; and by arranging the transcoding mapping module, rapid adaptation of multiple platforms and multiple communication protocols can be supported, and the universality and efficiency of the acquisition system are improved. Therefore, according to the embodiment of the invention, a set of non-intrusive data acquisition system which completely decouples an operation link of the tested unmanned equipment, ensures standard communication process and has zero operation logic interference is constructed, the test data of the tested unmanned equipment can be completely captured and reconstructed, and basic data support is provided for test evaluation of the tested unmanned equipment.
Owner:江淮前沿技术协同创新中心

On-road driving test evaluation method, vehicle test system, and computer readable storage medium for an on-road driving test evaluation program

The present invention aims to improve the efficiency of automobile development by front loading the evaluation of an on-road driving test, and comprises a virtual evaluation step of simulating the on-road driving test using a driving environment model which models a driving environment, an operating state model which models an operating state, and a vehicle model which models the actual vehicle; a bench test evaluation step of imitating the on-road driving test by combining a part or all of the actual vehicle, a part or all of the vehicle model, a part or all of the driving environment model, and a part or all of the operating state model, and conducting a bench test of a part or all of the actual vehicle, and an on-road driving test evaluation step of conducting the on-road driving test of the actual vehicle in a real driving environment.
Owner:HORIBA LTD

A method for evaluating comprehensive performance of a navigation terminal based on a microwave anechoic chamber

The application relates to a navigation terminal comprehensive performance test evaluation method based on a microwave darkroom, and belongs to the technical field of satellite navigation. The application simulates the use conditions and various scenes possibly encountered by a navigation terminal in actual use for testing by constructing a navigation terminal comprehensive performance test platform based on a microwave darkroom and constructing a navigation terminal comprehensive performance test scene, and performs comprehensive performance evaluation according to positioning / short message communication information reported by the navigation terminal. The application simulates the scenes possibly encountered by the tested terminal in actual application through a comprehensive test scene formed by multiple application scenes, the test result is closer to the actual application, and the application has good actual application value.
Owner:THE 54TH RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY GROUP CORPORATION

Bolt connection structure testing device coupled with temperature and vibration influence and evaluation method

The invention provides a bolt connection structure test device coupling temperature and vibration influence and an evaluation method. The bolt connection structure test device comprises a test bench, a flame type heater, elastic supporting legs, a first connected piece, a Y-direction linear motor, a second connected piece, a Z-direction linear motor, an ultrasonic control system, an ultrasonic transmitter, a bolt, an X-direction linear motor and a sound wave reflector plate. Comprising the following steps: simulating a temperature field where the bolt connection structure is located; simulating a vibration load borne by the bolt connection structure; calculating bolt load change; and evaluating the use performance and service life of the bolt. The method has the beneficial effects that the method is suitable for reliability analysis and environmental adaptability analysis of all bolt connection structures which are greatly influenced by vibration or temperature rise or vibration coupling temperature rise in various mechanical structures, and the service life of the bolt connection structures can be greatly prolonged after test evaluation and optimization design.
Owner:CHINA NORTH ENGINE RES INST

Low-cost rapid test system for ultra-high-precision analog-to-digital converter

The invention discloses a low-cost rapid test system for an ultrahigh-precision analog-to-digital converter, and the system comprises an upper computer which is used for generating and outputting a test instruction; according to analog-to-digital conversion results output by the to-be-tested ADC under different excitation voltages, differential linear errors and integral linear errors of the to-be-tested ADC are obtained through calculation; the test evaluation board is used for applying different excitation voltages to the to-be-tested ADC according to the test instruction; analog-to-digital conversion results output by the ADC to be tested under different excitation voltages are uploaded to the upper computer; and the power supply module is used for supplying power to the test evaluation board. According to the test system, the requirement that the resolution ratio of the excitation source is higher than that of the to-be-tested ADC is not put forward, and compared with a histogram method, the number of required samples is greatly reduced, so that the economic cost and the time cost can be reduced, and the test efficiency of the ultra-high-precision ADC is improved.
Owner:BEIJING MICROELECTRONICS TECH INST