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39results about How to "Verify consistency" patented technology

Construction verification method and device capable of verifying security two-dimensional code offline

Embodiments of the invention provide a construction verification method and device capable of verifying a security two-dimensional code offline. The method comprises the following steps of inputting information that needs coding and type information, carrying out digital signature operation and encryption operation on the input information according to an information release type, constructing combination information, and encoding to generate a security two-dimensional code which can be verified off-line according to a two-dimensional code coding rule; inputting the information of the security two-dimensional code and identifying included combination information and type information, analyzing and decoding the combination information to obtain independent sub-information according to the type information of the two-dimensional code, and verifying digital certificate effectiveness information, a digital signature of the input information and an effective time limit of the input information; and if all verifications pass, showing that the offline verification of the security two-dimensional code is correct and the coding information source of the security two-dimensional code is credible, otherwise showing that the information release source of the security two-dimensional code is incredible. The method and the device have the beneficial effects that the security two-dimensional code cannot be tampered, counterfeited and denied, the public or private information can be released, and the integrity of the information of the security two-dimensional code and the authenticity of the source can be verified offline without a network connection.
Owner:王栋

Method and device for verifying uniformity of data

The invention provides a method for verifying uniformity of data, and is applied to duplicate data of distributed storage. The method for verifying uniformity of data is characterized by comprising the following steps of acquiring a request for verifying the uniformity of the duplicate data included in a designated data set, and sending a request for acquiring the check code of each of fragmented data and the secondary check codes of the duplicate data to each storage node which stores the fragmented data of the data set, wherein the secondary check codes are obtained through a predetermined algorithm by using the check codes of all the fragmented data; receiving the check code of each of the fragmented data and the secondary check codes of the duplicate data which are transmitted by each storage node, calculating secondary check verification codes through adopting the same algorithm as the predetermined algorithm and the received check codes of all the fragmented data of the data set, and judging whether or not the duplicate data included in the data set has uniformity according to the secondary check verification codes and the received secondary check codes of the duplicate data. According to the method for verifying uniformity of data, the effect that the efficiency of data uniformity verification is improved can be achieved.
Owner:ALIBABA GRP HLDG LTD

Visual automatic point alignment system and method for intelligent substation

The invention discloses a visual automatic point alignment system and a visual automatic point alignment method for an intelligent substation. The method comprises the following steps of S1, comparing a scheduling signal with a motion signal; S2, associating the motion signal with a background signal; and S3, visually automatically comparing the background signal with the motion signal. According to the method provided by the invention, work efficiency and speed of a field engineer can be improved, the full-automatic closed loop workflow of a plant station end can be achieved, and the debugging project cost is reduced; meanwhile, the method provided by the invention is also applicable to an automatic acceptance phase of the intelligent substation, verifying consistence of the scheduling signal and the motion signal, verifying the consistence of the motion signal and the background signal, and verifying the consistence of the background signal and a device signal.
Owner:NANJING GUODIAN NANZI POWER GRID AUTOMATION CO LTD

Method and system for validating chip validity by utilizing graphical chip

ActiveCN102375941AFacilitate automatic identification and managementVerify legitimacyInternal/peripheral component protectionComputer securityApplication software
The invention relates to a system and method for validating the chip validity by utilizing a graphical chip. The system comprises an identifier generation module, a graphical identifier identification module and an identifier validation module. The method for validating the chip validity comprises three basic work flows, namely a graphical identifier generation flow, a graphical identifier identification flow and a graphical identifier validation flow. When validating the chip validity, a user uses the graphical identifier on an identification chip of the graphical identifier identification module, and the graphical identifier is reduced into a verification identifier, the verification identifier is transmitted to the identifier validation module, the identifier validation module compares the verification identifier with an internal identifier which is saved in a chip, the graphical identifier of the chip is falsified if the validation identifier is not in accordance with the internal identifier, and the user can determine whether the chip is counterfeited or illegal or not and further forbids the user to download an application program; and the chip is legal if the validation identifier is in accordance with the internal identifier.
Owner:NATIONZ TECH INC

Switching method and switching system for data service systems

The invention discloses a switching method and a switching system for data service systems. The switching method comprises the steps that target data in an old system are loaded to a new system, and the main writing point of the target data is switched into the new system after assigned time; if writing requests of users are received in the switching period, whether the writing requests are handed to the old system to be processed or the new system to be processed is determined according to the state of the target data of the writing requests in the new system and the old system, and the data are synchronously updated to the new system when the writing requests are handed to the old system to be processed; if reading requests are received in the switching period, whether the reading requests are handed to the old system to be processed or the new system to be processed is determined according to the state of the target data of the reading requests in the new system and the old system. By means of the switching method and the switching system for the data service systems, the service usability of services when the systems are switched can be improved.
Owner:TENCENT CLOUD COMPUTING BEIJING CO LTD

Data processing method and device, computer device and storage medium

The invention relates to a data processing method and device, a computer device and a storage medium. The method comprises the steps of obtaining the to-be-processed data; inputting the to-be-processed data into a data processing model; obtaining a preprocessing result output by each preprocessing sub-model in the data processing model; counting a pre-judgment probability corresponding to each pre-processing result; and generating a processing result corresponding to the to-be-processed data according to the pre-judgment probability corresponding to each preprocessing result. According to thepre-judgment probability corresponding to each preprocessing result, the consistency of a plurality of preprocessing results can be verified, and the processing result corresponding to the to-be-processed data is generated according to each pre-judgment probability, so that the model data processing accuracy is improved.
Owner:ROBOTICS ROBOTICS SHENZHEN LTD

Intelligent card system man-in-the-middle attack verification platform and test method

The invention relates to an intelligent card system man-in-the-middle attack verification platform and a test method. One end of the verification platform conducts communication with an intelligent card, and the other end of the verification platform conducts communication with a card reader. A control management module is arranged in the verification platform and used for loading an attack test program and storing and processing instructions and responses sent by the card reader and the intelligent card. By the adoption of the intelligent card system man-in-the-middle attack verification platform of the structure and the test method, the uniformity of an intelligent card system design scheme and the practical running process can be verified, and authenticity and effectiveness of a security evaluation result is guaranteed; the evaluation result has higher persuasion and authority; due to the fact that a middle attack needs to be executed actually, cost of the man-in-the-middle attack can be quantified effectively and accurately, the ability of an intelligent card system in resisting the man-in-the-middle attack can be evaluated accurately, and thus the security level of the intelligent card system to be tested is confirmed.
Owner:THE THIRD RES INST OF MIN OF PUBLIC SECURITY

Method for testing pathway of satellite initiating explosive devices

The invention discloses a method for testing the pathway of satellite initiating explosive devices, comprising a plurality of initiating explosive devices, controllers of the initiating explosive devices, test plugs, adapter plugs, and adapter cables. The controllers of the initiating explosive devices are connected to N initiating explosive devices through test plugs, adapter plugs, and adapter cables to complete the internal power pathway test of the controllers, the internal and external connection test of the initiating explosive devices, and the external pathway test of the initiating explosive devices. According to the method for testing the pathway of satellite initiating explosive devices, the consistency of the pathway object of initiating explosive devices and the design file canbe verified, the test result has the characteristics of reproducible and re-checkable, and has been applied on multiple communication satellites, thereby effectively ensuring the safety and correctness of the pathway of initiating explosive devices.
Owner:CHINA ACADEMY OF SPACE TECHNOLOGY

Method and device for verifying data between databases

The invention provides a method and a device for verifying data between databases. The method comprises the following steps of: obtaining a first data table corresponding to the first database from apreset configuration library, and obtaining a first data table corresponding to the second database, calculating a first data sum of the first data table, calculating a second data sum of the second data table, and if the first data sum is consistent with the second data sum, generating a consistency verification report of the first database and the second database. The process does not depend onreplication between main data and standby data or between standby data, and the configuration information and the verification result of the preset configuration library can be independently stored and are not written into a production database. And data replication between different service libraries can be verified, so that the method is more flexible. And a concurrent mode can be adopted, so that the time consumption of the whole verification process is greatly reduced, and the business requirements can be well met through offline and production verification.
Owner:NETSUNION CLEARING CORP

Station design mode-based air particulate matter automatic film-changing sampling device

The invention belongs to the technical field of sampling air particulate matters, and particularly relates to a station design mode-based air particulate matter automatic film-changing sampling device, which comprises a film feeding mechanism, a collection mechanism, a manipulator, a storage mechanism and a filter film jacket; the film feeding mechanism is fixedly arranged on a supporting plate and comprises a film feeding box body, an upper film feeding through hole and a lower film feeding through hole are respectively formed in the upper part and the lower part of the film feeding box body, the filter film jacket is arranged in the lower film feeding through hole and consists of a filter film clamp and a film tube, a filter film is fixed by the filter film clamp and stored in the film tube, a film feeding linear motor is fixedly arranged on the lower part of the lower film feeding through hole, a film feeding tray is fixedly arranged on the upper part of the film feeding linear motor, and the film feeding tray penetrates into the film tube and is matched with the filter film clamp. The device can continuously work for 7 days or 15 days, and compared with the single-film sampler, not only can a great deal of manpower output be reduced, but also the possibility of making errors during frequent operations can be decreased.
Owner:TIANJIN TONGYANG TECH DEV

Three-dimensional planning method for green mine based on three-dimensional real scene

ActiveCN112069571AReliable Qualitative and Quantitative AnalysisAccurate Judgment of SuitabilityGeometric CADDesign optimisation/simulationComputer-aidedComputer Aided Design
The invention provides a three-dimensional planning method for a green mine based on a three-dimensional real scene. The method comprises the following steps of conducting three-dimensional modeling on an original real scene of the mine; converting two-dimensional mining design files into three-dimensional mining design files by computer-aided design software; using three-dimensional geographic information platform software to fuse the mine original live-action model and the mine exploitation three-dimensional design model in a partitioning and staging manner; fusing a greening design file with a mine zoning and staging mining model; in combination with the mapping relation table of re-greening project amount and the cost, calculating re-greening project amount and the cost of each stage of mining; according to the re-greening budget of the mine, judging whether the re-greening work amount and cost of each stage of mining are reasonable or not; and obtaining a three-dimensional planning scheme of the green mine. The technical problems that a virtual scene constructed by adopting a virtual reality method is difficult to express an objective real scene, accurate quantitative analysiscannot be carried out, and a decision maker cannot accurately judge whether a mining planning scheme is suitable or not can be solved.
Owner:CHONGQING JIAOTONG UNIVERSITY

Advanced security method and device

The invention discloses an advanced security method and device. A signing module preprocesses a data packet and signs a preprocessed result. An installation module installs the signed data packet in a preset area and adds a signature attribute to a file in the preset area. When it is determined that the file in the preset area is performed, a verification module reads the signature attribute of the file to obtain a legal signature and verifies the consistency of the signature of the file and the legal signature. A performance module prevents the performance of the file when the signature of the file is inconsistent with the legal signature. When the file is opened, signature verification is performed, and the performance module prevents the performance of the file when it is determined that the verified signature is illegal, so the security of user data is ensured from a source, and the security is improved.
Owner:ZTE CORP

GaN HEMT accelerated life test method

The invention is suitable for the technical field of semiconductors, and provides a GaN HEMT accelerated life test method. The method comprises the following steps: selecting a plurality of GaN HEMT devices prepared in a same process, randomly grouping the plurality of GaN HEMT devices, and forming at least four service life test groups, wherein each service life test group comprises a variation temperature test group and at least three fixed temperature test groups; applying the same test DC power to the GaN HEMT device in each fixed temperature test group, testing electric parameters, and obtaining first failure data; applying the same test DC power with the fixed temperature test group to the GaN HEMT device in the variation temperature test group, testing the electric parameters, and obtaining second failure data; and obtaining a temperature-service life curve according to the test temperature, the first failure data and the second failure data. By adopting the GaN HEMT acceleratedlife test method, the consistence of the GaN HEMT accelerated life test can be verified, and the test credibility is improved.
Owner:河北中瓷电子科技股份有限公司石家庄高新区分公司

Medical data sharing method and device, and storage medium

The invention discloses a medical data sharing method and device, and a storage medium, and the method comprises the steps: generating a medical account of a user, and storing the medical account in a block chain; performing encryption processing on the medical source data after the NFT processing to form first encrypted data, and storing the first encrypted data into a medical account of the user; verifying the access permission of the data user according to the access request of the data user, if the permission passes, determining the data features of the request data, and deducting the digital assets corresponding to the medical data in the account of the data user according to the data features; after the digital assets are deducted, triggering a decryption instruction for the first encrypted data to obtain medical source data, and reading data to be queried by a data user from the medical source data according to data features to serve as medical data; sending the medical data to a data user; and after determining that the data user receives the medical data, adding the digital assets drawn out from the account of the data user into the account of the user.
Owner:浪潮工业互联网股份有限公司

A kind of advanced security method and device

The invention discloses a high-level security method and device. The signature module preprocesses the data packet and signs the preprocessed result. The installation module installs the signed data packet into a predetermined area, and the predetermined area Add a signature attribute to the file in the predetermined area. When it is determined that there is a file in the predetermined area to execute, read the signature attribute of the file to obtain a legal signature. The verification module verifies the consistency between the signature of the file and the legal signature, and determines that the verification result is inconsistent. , then prevent the execution of the file, so that the signature verification is performed when the file is opened, and when the execution module determines that the verified signature is invalid, it prevents the execution of the file, thereby ensuring the security of user data from the source. Improved security.
Owner:ZTE CORP

A closed-loop test method for virtual terminals in smart substations

The invention provides a closed-loop test method for a virtual terminal in an intelligent substation. By introducing an SCD file, the input configuration of a GOOSE virtual terminal of a protection / monitoring device is completed and outputting is conducted; meanwhile, by means of an MMS message triggered by change of input data of the virtual terminal of the protection / monitoring device, station-control-layer MMS information corresponding to the GOOSE virtual terminal is obtained, and a closed-loop test is formed. The method can effectively verify the consistency of a static model and a dynamic model of the protection / monitoring device, and can serve as an effective means for judgment of the consistency of the configuration of the SCD file of the device and a running configuration. Potential threats that safe substation operation is likely to be affected by inconsistency of the configuration of the SCD file of an IED device of the intelligent substation and the running configurationare avoided.
Owner:西电通用电气自动化有限公司

Metering automation equipment standardized test management system and test method

The invention discloses a standardized test management system for metering automation equipment. The standardized test management system comprises a test server and tested wireless equipment; the tested wireless equipment is in communication connection with the test server in a wireless communication mode; the tested wireless equipment is used for receiving and responding to the test instruction sent by the test server, collecting test data according to the test instruction, and uploading the test data to the test server; and the test server side is used for comparing the received test data according to the service interface protocol standard information and the reference data so as to determine a device standardization test result of the tested wireless equipment according to a comparison result. Through the management system provided by the invention, the normative test on the wireless cellular communication access equipment submitted to be tested is realized, so that the tested wireless equipment with different brands, various models and dispersed positions is managed in a unified manner, and the test efficiency of the wireless cellular communication access equipment is improved.
Owner:GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD

A method and device for verifying data consistency

The invention provides a method for verifying uniformity of data, and is applied to duplicate data of distributed storage. The method for verifying uniformity of data is characterized by comprising the following steps of acquiring a request for verifying the uniformity of the duplicate data included in a designated data set, and sending a request for acquiring the check code of each of fragmented data and the secondary check codes of the duplicate data to each storage node which stores the fragmented data of the data set, wherein the secondary check codes are obtained through a predetermined algorithm by using the check codes of all the fragmented data; receiving the check code of each of the fragmented data and the secondary check codes of the duplicate data which are transmitted by each storage node, calculating secondary check verification codes through adopting the same algorithm as the predetermined algorithm and the received check codes of all the fragmented data of the data set, and judging whether or not the duplicate data included in the data set has uniformity according to the secondary check verification codes and the received secondary check codes of the duplicate data. According to the method for verifying uniformity of data, the effect that the efficiency of data uniformity verification is improved can be achieved.
Owner:ALIBABA GRP HLDG LTD

Avionics design method based on model

PendingCN112784434AAchieve the correct descriptionImplement trace representationDesign optimisation/simulationSpecial data processing applicationsSystem architecture designPhysical layer
An avionics design method based on a model comprises the steps: analyzing data interfaces from an avionics system level to a physical level, and establishing a hierarchical model of the data interfaces from top to bottom based on scenes, behaviors, functions and architecture of an avionics system; and verifying the interface control file according to the hierarchical model. The data interface is subjected to hierarchical structural design, mapping of interface traceability and integrity of scene-behavior-function-architecture is realized, transitivity of system functions and consistency of connection are verified, and rapid interface test verification and interface demand confirmation are realized. According to hierarchical construction, hierarchical mapping is performed on the system function and behavior model, a system architecture design interface is output, and then actual bus interface data corresponding to the EICD physical hierarchy is formed.
Owner:BEIJING AERONAUTIC SCI & TECH RES INST OF COMAC +1

Data service system switching method and switching system

The present application discloses a switching method and system of a data business system, including: first loading the target data in the old system into the new system, and then switching the main writing point of the target data to the new system after a specified time; If a write request from the user is received during the switching period, it is decided to hand over the write request to the old system or the new system for processing according to the state of the target data of the write request in the old and new systems, and hand it over to the old system for processing Synchronize data updates to the new system; if a user’s read request is received during the switchover period, it is decided to hand over the read request to the old system or to the new system according to the state of the target data of the read request in the old and new systems deal with. Utilizing the present invention can improve the availability of business services during system switching.
Owner:TENCENT CLOUD COMPUTING BEIJING CO LTD

A Method of Completing Integrated Function of Chip Design Using Form

A method for completing chip design integrated functions by form includes: manually inputting content of a sub-module form and an integrated module form; reading in the content of the sub-module form and the integrated module form; and automatically generating a sub-module source code and an integrated module source code according to mapping relation between predefined content of the sub-module form and the integrated module form and source codes of the sub-module form and the integrated module form. By the aid of the method and software script, integrating efficiency can be greatly improved, consistency of a file with the source codes and different modules is guaranteed, and the method also has designing and verifying functions at the same time.
Owner:上海宇芯科技有限公司

Method and system for validating chip validity by utilizing graphical chip

The invention relates to a system and method for validating the chip validity by utilizing a graphical chip. The system comprises an identifier generation module, a graphical identifier identification module and an identifier validation module. The method for validating the chip validity comprises three basic work flows, namely a graphical identifier generation flow, a graphical identifier identification flow and a graphical identifier validation flow. When validating the chip validity, a user uses the graphical identifier on an identification chip of the graphical identifier identification module, and the graphical identifier is reduced into a verification identifier, the verification identifier is transmitted to the identifier validation module, the identifier validation module compares the verification identifier with an internal identifier which is saved in a chip, the graphical identifier of the chip is falsified if the validation identifier is not in accordance with the internal identifier, and the user can determine whether the chip is counterfeited or illegal or not and further forbids the user to download an application program; and the chip is legal if the validation identifier is in accordance with the internal identifier.
Owner:NATIONZ TECH INC

Loose coupling method and system for business process and business data processing based on rule engine

The invention provides a business process and a loose coupling method and a system of business data processing based on a rule engine. Business process logic and business data processing logic are mutually independent. Interrelationship between business process logic and business data processing logic is established through a rule engine component, thereby ensuring consistency of business data and enabling business service to be efficient and accurate. In addition, by the adoption of the rule engine technology, business process logic and business data processing logic are flexibly combined, and enterprises absolutely can formulate business rules according to characteristics and self development statuses. Therefore, congruent relationship between business data processing and business process can be flexibly regulated, and the ability of enterprises to be adapted to market changes and business changes is greatly improved.
Owner:FOCUS TECH

Testing method of woven composite material blade

The invention discloses a method for testing a woven composite material blade, relates to the field of aero-engine blade testing, and is used for testing the compression performance of the woven composite material blade. The method comprises the following steps: setting a target area on the woven composite material blade; sampling from the target area to obtain a sample; loading the sample by adopting a four-point bending test device; acquiring first bending test data of the sample; establishing a finite element model of the sample; applying boundary conditions to the finite element model according to a four-point bending test; calculating second bending test data of the finite element model according to the rigidity of the finite element model; when the difference value between the first bending test data and the second bending test data is smaller than a set value, extracting the compression stiffness of the finite element model and the maximum compression stress corresponding to the maximum load; the maximum compression stress in the finite element model is the compression strength of the sample, and the ratio of the maximum compression stress to the maximum compression strain in the finite element model is the compression modulus of the sample.
Owner:AECC COMML AIRCRAFT ENGINE CO LTD

Testing method and device based on fault injection and computer equipment

The invention discloses a test method and device based on fault injection and computer equipment, which are used for improving the accuracy of a data consistency test. The method specifically comprises the following steps: determining a test fault type and a fault injection point of a target program, wherein the fault injection point is a program starting position corresponding to a method for interacting with a predetermined database in the target program; determining a target test case from the test case set according to the test fault type; according to the target test case, determining a target byte code from the mapping relation between the test case and the byte code, and inserting the target byte code into the target program at the fault injection point during operation of the target program to obtain a test result of the target program; and comparing the test result with a predetermined data set to verify the consistency of the target program data.
Owner:AEROSPACE INFORMATION

A Mechanism Consistency Method for Accelerated Testing of Nitrile Rubber Based on Failure Physics

The invention provides a method for verifying the consistency of mechanisms involved in accelerated testing of butadiene-acrylonitrile rubber based on failure physics. The method comprises the following steps: 1, carrying out a thermo-oxidative aging experiment on the butadiene-acrylonitrile rubber; 2, subjecting an aged sample to a compression stress relaxation test, an infrared spectroscopic test and a thermal analysis test; 3, analyzing the test results of the compression stress relaxation, infrared spectroscopy and thermal analysis of the aged sample; and 4, verifying the consistency of mechanisms involved in accelerated testing of the butadiene-acrylonitrile rubber by using analysis results. According to the invention, the method analyzes and verifies the consistency of mechanisms involved in accelerated testing of the butadiene-acrylonitrile rubber by combining related experimental data of the compression stress relaxation test, infrared spectroscopic test and thermal analysis test, overcomes the problem of how to determine whether degradation mechanisms have abruptly changed due to too high acceleration stress during designing of an accelerated test, guarantees the consistency of failure mechanisms during accelerated testing and is of great practical significance to designing of accelerated tests of the butadiene-acrylonitrile rubber and guaranteeing of validity of experimental data in the future.
Owner:BEIHANG UNIV

Off-line verifiable secure two-dimensional code structure verification method and device

Embodiments of the present invention provide a verification construction method and device capable of offline verification of a safety information tag, comprising: input information to be encoded and type information, perform a digital signature operation and an encryption operation on input information according to an information release type to construct combined information, and encode according to an information tag encoding rule to generate an offline-verifiable safety information tag; input safety information tag information and identify the combined information and type information comprised therein, analyze and decrypt the combined information according to information tag type information to obtain independent sub-information, and verify digital certificate validity information, a digital signature of the input information and valid time limit of the input information; if the verification succeeds, the safety information tag is correct in offline verification, the encoding information source of the safety information tag is credible, otherwise the information release source thereof is incredible. The safety information tag of the present invention is tamper-resistant, unforgeable and undeniable, can release public or private information, and can verify information integrity of the information tag and whether the source thereof is real or not offline without network connection.
Owner:王栋

Compressor stall test structure and test method based on dynamic pressure measurement

The invention provides a gas compressor stalling test structure based on dynamic pressure measurement. The gas compressor stalling test structure comprises a gas compressor volute, a gas compressor impeller, a gas compressor back disc and sensors; the gas compressor volute is fixed to the gas compressor back disc, the gas compressor impeller is fixed to a rotating shaft, the rotating shaft and the gas compressor back disc are matched through a sealing structure, and the rotating shaft is connected with a bearing base; a plurality of sensor bases where the sensors are installed are distributed in the middle portion of the side wall of a pressure expander of the gas compressor back disc in the circumferential direction; and the sensors are high-frequency response dynamic pressure sensors, and pressure testing holes are formed in the sensor bases. The gas compressor stalling test structure has the advantages that based on the wall face static testing means easy to achieve and implement, the multiple dynamic pressure test sensors are distributed on gas compressor static pieces in the circumferential direction, change features of the wall face static pressure along with time are obtained, stalling generation conditions and features of the centrifugal gas compressor are captured, and prototype gas compressor stalling testing is completed with smaller investment.
Owner:CHINA NORTH ENGINE INST TIANJIN

A kind of gan HEMT accelerated life test method

The invention is suitable for the technical field of semiconductors, and provides a GaN HEMT accelerated life test method. The method comprises the following steps: selecting a plurality of GaN HEMT devices prepared in a same process, randomly grouping the plurality of GaN HEMT devices, and forming at least four service life test groups, wherein each service life test group comprises a variation temperature test group and at least three fixed temperature test groups; applying the same test DC power to the GaN HEMT device in each fixed temperature test group, testing electric parameters, and obtaining first failure data; applying the same test DC power with the fixed temperature test group to the GaN HEMT device in the variation temperature test group, testing the electric parameters, and obtaining second failure data; and obtaining a temperature-service life curve according to the test temperature, the first failure data and the second failure data. By adopting the GaN HEMT acceleratedlife test method, the consistence of the GaN HEMT accelerated life test can be verified, and the test credibility is improved.
Owner:河北中瓷电子科技股份有限公司石家庄高新区分公司
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