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33results about How to "Long test cycle" patented technology
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Establishment of carrier based on fish CRISPR/Cas9 system by using gene knockout method ad establishing method of carrier
InactiveCN104232669AEasy to operateHigh targeting accuracyVector-based foreign material introductionTransgenesisElectroporation
The invention discloses establishment of a carrier based on a fish CRISPR / Cas9 system by using a gene knockout method ad an establishing method of the carrier, and relates to a carrier based on the fish CRISPR / Cas9 system and an establishing method of the carrier, so as to solve the problems that in a conventional transgenosis method the position that transgenosis is inserted into genome is hard to confirm and potential safety hazard can be generated when external DNA is led into cells and is randomly integrated by using a microscopic injection method, an electroporation method, a sperm carrier method and the like, and the problems that a conventional gene knockout method is complex in process, high in requirement on techniques, high in expense and long in experiment period, and the success rate is limited by multiple factors. By co-ejecting two non-integrated knockout carriers, namely, pX330-MSTN a and pX330-MSTN b, into zygotes of fishes in the 1-2 cell stages, high-efficiency and rapid gene knockout can be achieved.
Owner:HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
Simulation testing machine for evaluating cooling uniformity of internal combustion engine
InactiveCN102226741AOptimize layoutLong test cycleInternal-combustion engine testingExternal combustion engineWater jacket
The invention discloses a simulation testing machine for evaluating cooling uniformity of an internal combustion engine. The simulation testing machine comprises: an internal combustion engine body, a water pump, a high-temperature oil pump, a first motor, a second motor, a flowmeter of cooling water, a cooling fan, a radiator, a first throttle valve, a second throttle valve, a sensor of outlet temperature of cooling water, a sensor of outlet pressure of cooling water, a boiler of heat transfer oil, a high-temperature flowmeter, a simulated piston, a measuring plate, and the like. According to the invention, the boiler of heat transfer oil is used to heat silicone oil as well as make the heated silicone oil circulated and pass a cylinder of the internal combustion engine so as to simulate the actual heating of the internal combustion engine; besides, cyclic cooling liquid is used for cooling the simulation testing machine. According to the testing apparatus, the measuring plate is arranged between a cylinder cover of an engine and the body, so that relevant sensors van be arranged to measure internal parameters of a cooling water jacket of the internal combustion engine. Compared with an actual internal combustion engine, the simulation testing machine has advantages of simple structure and short test period; in addition, a function of high-efficient measurement of cooling uniformity of the internal combustion engine can be realized with low cost.
Owner:ZHEJIANG UNIV
Molecular biological quantitative detecting method for pathogenicity paratypic hemolytic vibrio in aquatic products
InactiveCN1831139ALong test cycleHigh sensitivityMicrobiological testing/measurementAgainst vector-borne diseasesVibrio parahaemolyticusGel electrophoresis
The invention relates to a method to test pathogenicity vibrio parahaemolyticus in aquatic product that the feature is including the following steps: designing, filtering, and manufacturing the specificity primer of the testing strain, expanding PCR and testing, distilling DNA, PCR expanding of the testing strain specificity gene section, agarose gel electrophoresis of the PCR product and testing the specificity section; MPN method testing and calculating the testing result. The invention discloses a method to rapidly testing bacilli in testing sample.
Owner:OCEAN UNIV OF CHINA
Testing method for design allowable value of composite material opening pore compressive strength
InactiveCN106442180AA large number of test piecesLong test cycleMaterial strength using repeated/pulsating forcesSystem testingStrength design
The invention discloses a testing method for a design allowable value of a composite material opening pore comprehensive strength. The testing method for the design allowable value of the composite material opening pore comprehensive strength comprises the steps of 1, obtaining basic values of impact factors of technology batch, hygrothermal environment, thickness, diameter of opening pore, ratio of breadth to diameter, pore countersunk head and the opening pore compressive strength of the composite material through a cordwood system testing component and testing stage; 2, obtaining the design allowable value of the composite material opening pore comprehensive strength through a formula and the obtained data in the step 1. The adoption of the testing method for the design allowable value of the composite material opening pore comprehensive strength can solve problems in engineering practices that the obtained design allowable value of the composite material opening pore comprehensive strength through a traditional testing method has a large deviation, the quantity of testing articles is large, the cycle of testing is long, and the testing result is influenced greatly by constraint conditions such as size effect, boundary conditions and load distribution.
Owner:SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
Power joint debugging system and method for hydrogen fuel cell automobile power system
PendingCN113295429AReduce development costsVerify reliabilityVehicle testingEngine testingData displayControl system
The invention provides a power joint debugging system and method for a hydrogen fuel cell automobile power system. The system comprises a test platform, a communication module connected with the test platform, a control module, a test module and a data display and processing module. And the communication module is connected with the vehicle control unit, the battery management system, the battery controller, the dynamometer control system and the fuel cell system. According to the power joint debugging system and method for the hydrogen fuel cell automobile power system, the power system and all parts of the power system are tested through a bench test, performance parameters of all key parts can be obtained, the reliability of all the parts can be verified, the dynamic property and economical efficiency of the whole automobile can be accurately evaluated, and the system and the method are an important means for reducing the development cost of the power system and improving the development efficiency.
Owner:CATARC TIANJIN AUTOMOTIVE ENG RES INST CO LTD +1
Method for optimizing test cycle of nuclear power plant containment vessel
ActiveCN107731322ALong test cycleReduce frequencyNuclear energy generationNuclear monitoringElectricityNuclear plant
The invention provides a method for optimizing the test cycle of a nuclear power plant containment vessel. The method comprises the following steps: S1. judging whether the history situation of CTT cycle of the test of the nuclear power plant containment vessel is qualified, if so, entering S2, otherwise, judging that the CTT cycle is not suitable for being prolonged; S2. judging whether the nuclear power plant containment vessel is checked to be qualified or not, if so, entering S3., otherwise, correcting; and S3. evaluating the risk after prolonging the CTT cycle of the power plant, judgingwhether the risk evaluation is passed, if so, determining to prolong the CTT cycle, otherwise, judging that the CTT cycle is not suitable fo being prolonged. By utilizing the method, the CTT test cycle can be prolonged, the CTT frequency can be reduced, the CTT risk can be efficiently reduced, overhaul of critical paths can be saved within the service life of a nuclear power unit, at least 120,000,000 degrees power can be generated by thousands and millions of units; at least ten days of overhaul critical path can be saved after the service life of the nuclear power plant is prolonged, 240,000,000 degrees power can be generated by thousands and millions of units, and the economic benefits can be obviously increased.
Owner:CHINA NUCLEAR POWER TECH RES INST CO LTD +3
Manual icing testing system based on natural condition and testing method of the manual icing testing system
The invention discloses a manual icing testing system based on natural condition. The manual icing testing system comprises a measuring system, wherein the measuring system comprises a testing field, a wire rod system and a spraying system; the wire rod system is erected on the testing field; the wire rod system comprises concrete rods arranged in parallel; two layers of leads in parallel are erected up and down are erected on each row of concrete rods; two leads are arranged at each layer; the leads and the concrete rods are connected through insulators; the spraying system comprises a spraying pipeline; the spraying pipeline is parallel to the leads at the upper layer; and the spraying pipeline is provided with nozzles facing downwards. With the adoption of the manual icing testing system based on natural condition, related by the invention, the natural environment condition can be utilized well; the advantages of the natural condition and the natural environment condition can be combined; the defect that testing is carried out only depending on the natural condition is made up; the manual interference is carried out pointedly; the testing time (period) is prolonged; and ideal parameters of the testing environment can be obtained.
Owner:STATE GRID HENAN ELECTRIC POWER ELECTRIC POWER SCI RES INST +1
Method for measuring derivative of aircraft longitudinal moment on pitching angular velocity
ActiveCN104361213AShorten the test cycleReduce complexityAerodynamic testingSpecial data processing applicationsFlight vehicleMeasuring instrument
The invention discloses a method for measuring a derivative of aircraft longitudinal moment on pitching angular velocity. The method comprises the following steps: firstly constructing a testing wind tunnel, wherein the testing wind tunnel comprises a wind tunnel inlet, a wind tunnel pipeline and a rectifying blade; then horizontally and fixedly arranging an aircraft model in the wind tunnel pipeline through a supporting frame and arranging a data measuring instrument at the connection portion of the aircraft model and the supporting fame; secondly, rotating the testing wind tunnel at a constant speed at the angular velocity q1, measuring the longitudinal moment (img file='DDA0000593412430000011.TIF' wi='96' he='53' / ) of the aircraft model at the moment; successively, rotating the testing wind tunnel at a constant speed at the angular velocity q2 and measuring the longitudinal moment (img file='DDA0000593412430000012.TIF' wi='93' he='52' / ) of the aircraft model at the moment; finally, calculating the derivative of the aircraft longitudinal moment on the pitching angular velocity according to the q1 and the q2 as well as (img file='DDA0000593412430000013.TIF' wi='204' he='55' / ). The method has the benefit that the derivative of aircraft dynamic torque on pitching angular velocity can be directly measured through the wind tunnel test, so that the test period, the test expense and the test complexity are effectively reduced.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Method and device for compressing non-constant amplitude domain data
ActiveCN107271204AReduced compression efficiencyLong test cycleRailway vehicle testingFatigue damageData compression
The present invention provides a method and a device for compressing non-constant amplitude domain data. The method determines whether a small load event is in an ascending load event or a descending load event in the rain flow counting statistics. If the small load event is a small load event in the ascending load event and the small load event is smaller than a minimum stress range, a half cycle of the period in which the small load event is counted in the rain flow counting statistics is removed. If the small load event is a light load event in the descending load event and the product of the small load event and the empirical parameter is less than the minimum stress range, a half cycle of the period in which the small load event is counted in the rain flow counting statistics is removed. The non-constant amplitude data compression of different load events is realized. Under the premise of fatigue damage equivalence, the compression efficiency is improved and the test period is shortened.
Owner:CRRC QIQIHAR ROLLING CO LTD
Device and method for measuring actual triaxial creep of geotechnical engineering test specimen
InactiveCN103217345BImplement three-way loadingGuaranteed independenceInvestigating material ductilityClosed cavityPressure sensor
The invention discloses a device for measuring actual triaxial creep of a geotechnical engineering test specimen. The device comprises a support structure, and also comprises four confining pressure plates, an upper compression plate and a lower compression plate so as to form a closed cavity for wrapping a test specimen, wherein the confining pressure plates comprise two long confining pressure plates and two short confining pressure plats, the upper compression plate and the lower compression plate are a rectangular top steel plate and a rectangular bottom steel plate, the two outwards-bent L-shaped long confining pressure plates are overlapped on two adjacent side surfaces of the bottom steel plate, the two outwards-bent L-shaped short confining pressure plates are overlapped on the other two side surfaces of the bottom steel plate, the bottom ends of the short of the bottom steel plate plates are arranged on the bottom steel plate, the top steel plate is overlapped at the top ends of the long confining pressure plates, the top steel plate is clung to the inner side surfaces of the two short confining pressure plates, pressure sensors corresponding to the four confining pressure plates and the upper compression plate and the lower compression plate are vertically arranged inside the support structure, and grating rulers are arranged on the pressure sensors. The invention also provides a method for measuring the actual triaxial creep of the geotechnical engineering test specimen by using the device.
Owner:SHANDONG UNIV
Method for testing surface pollution pressure resistance of insulator coated with anti-pollution flashover coating
InactiveCN111579943AEven amount of dirtEasy to sprayTesting dielectric strengthHigh-voltage direct currentElectrical polarity
The invention provides a method for testing the surface pollution pressure resistance of an insulator coated with an anti-pollution flashover coating. The nozzle is used for uniformly and dispersedlyspraying solid powdery dirt into the dirt accumulation environment box by utilizing negative pressure generated by compressed air; solid powdery dirt is adsorbed to the outer surface of the anti-pollution flashover coating by utilizing the adsorption effect of high-voltage direct current; in order to ensure that the dirt amount on the outer surface of the anti-pollution flashover coating is uniform, the polarity of the high-voltage direct current is changed once on the high-voltage side at certain intervals, the polarity is frequently changed, and the problems that the surface of the hydrophobic and super-hydrophobic anti-pollution flashover coating with low surface energy is difficult to contaminate and even cannot be contaminated are solved; solid powdery dirt is prepared by adopting a method of firstly wet-mixing uniformly and then dehydrating and drying, so that the dirt is finer and smoother, and the dirt can be conveniently sprayed out in a mist form; the solid powdery dirt is prefabricated and formed by drying and dewatering in advance, so that the time required for drying the dirt liquid in the traditional test method is avoided; and the pretreatment step of coating the diatomite in the traditional method is abandoned.
Owner:ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
A Dynamic Monitoring Method for Measurement Data of Aircraft Structure Fatigue Test
ActiveCN109592075BEasy to controlLong test cycleAircraft components testingMaterial strength using repeated/pulsating forcesStructural fatigueDynamic monitoring
The present invention relates to a kind of dynamic monitoring method of aircraft structure fatigue test measurement data, it is characterized in that, comprises the following steps: Step 1, carry out static strain displacement measurement; Step 2, establish static strain displacement measurement basic data template; Step 3, Carry out fatigue strain displacement measurement; step 4, establish a basic data template for fatigue strain displacement measurement; step 5, conduct a formal fatigue test and perform static error calculation and judgment; step 6, conduct a formal fatigue test and perform fatigue error calculation and judgment. The theoretical basis used in the invention is correct, the implementation steps are clear and simple, the computer is easy to control and implement, and the engineering concept is clear. The proposal of the invention solves the problem that it is difficult to determine whether the test runs normally in the aircraft structure fatigue test.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
Unequal-amplitude threshold data compression method and device
ActiveCN107271204BReduced compression efficiencyLong test cycleRailway vehicle testingFatigue damageData compression
The present invention provides a method and a device for compressing non-constant amplitude domain data. The method determines whether a small load event is in an ascending load event or a descending load event in the rain flow counting statistics. If the small load event is a small load event in the ascending load event and the small load event is smaller than a minimum stress range, a half cycle of the period in which the small load event is counted in the rain flow counting statistics is removed. If the small load event is a light load event in the descending load event and the product of the small load event and the empirical parameter is less than the minimum stress range, a half cycle of the period in which the small load event is counted in the rain flow counting statistics is removed. The non-constant amplitude data compression of different load events is realized. Under the premise of fatigue damage equivalence, the compression efficiency is improved and the test period is shortened.
Owner:CRRC QIQIHAR ROLLING CO LTD
A Method for Optimizing the Containment Test Period of Nuclear Power Plant
ActiveCN107731322BLong test cycleReduce frequencyNuclear energy generationNuclear monitoringElectricityNuclear plant
The invention provides a method for optimizing the test cycle of a nuclear power plant containment vessel. The method comprises the following steps: S1. judging whether the history situation of CTT cycle of the test of the nuclear power plant containment vessel is qualified, if so, entering S2, otherwise, judging that the CTT cycle is not suitable for being prolonged; S2. judging whether the nuclear power plant containment vessel is checked to be qualified or not, if so, entering S3., otherwise, correcting; and S3. evaluating the risk after prolonging the CTT cycle of the power plant, judgingwhether the risk evaluation is passed, if so, determining to prolong the CTT cycle, otherwise, judging that the CTT cycle is not suitable fo being prolonged. By utilizing the method, the CTT test cycle can be prolonged, the CTT frequency can be reduced, the CTT risk can be efficiently reduced, overhaul of critical paths can be saved within the service life of a nuclear power unit, at least 120,000,000 degrees power can be generated by thousands and millions of units; at least ten days of overhaul critical path can be saved after the service life of the nuclear power plant is prolonged, 240,000,000 degrees power can be generated by thousands and millions of units, and the economic benefits can be obviously increased.
Owner:CHINA NUCLEAR POWER TECH RES INST CO LTD +3
System for evaluating environmental stress resistance of polyethylene resin, and applications thereof
ActiveCN106645662AWon't releaseShorten the test cycleMaterial testing goodsEnvironmental resistanceHazardous substance
The present invention relates to a system for evaluating the environmental stress cracking resistance of a polyethylene resin, wherein the system comprises the aqueous solution of a nonionic surfactant and an anionic surfactant, and further has the following advantages that 1) the electrostatic stability of the mixed surfactant is improved to make the active agent molecular chain easily form micelles so as to provide a synergistic effect and substantially improve the efficiency of the surfactant; and 2) the surfactant component cannot release nonylphenol and other components toxic and harmful for human body during the use process, such that the advantages of safety and environmental protection are provided.
Owner:CHINA PETROLEUM & CHEM CORP +1
A Method for Determining the Loading Frequency of Aircraft Structure Fatigue Test
ActiveCN109592074BLong test cycleLoad moreAircraft components testingMaterial strength using repeated/pulsating forcesFatigue loadingStructural fatigue
A method for determining the loading frequency of an aircraft structure fatigue test is characterized in that it comprises the following steps: Step 1, performing static strain measurement under each peak and trough load; Step 2, calculating the static measurement strain average value; Step 3 , Carry out the fatigue spectrum strain measurement; Step 4, calculate the relative error η between the fatigue spectrum strain measurement value and the static measurement strain average value k , judging η k Whether the theoretical basis used in the present invention is correct, the implementation steps are clear and simple, and the engineering concept is clear. The invention solves the problem that the fatigue loading frequency is not easy to determine in the aircraft structure fatigue test.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
Testing device for simulating explosion shock wave pressure in deepwater free field environment
PendingCN114814155ASimple designLow costFuel testingMeasurement of explosion forceMagnetic tension forceSystems design
The invention belongs to the technical field of deep water environment explosion simulation tests. The invention particularly relates to an explosive shock wave pressure testing device for simulating a deepwater free field environment. The invention designs a pressure testing device for simulating explosion shock waves in a deepwater free field environment. A piston type closed tank is pressurized by utilizing repulsive force between magnets. The device is composed of a piston type closed tank, a pressurization system, a shock wave pressure testing system and a water injection and drainage system. According to the technical scheme, the positions and the number of sensors are selected according to the test purpose, water is injected through a water injection and drainage system, a pressurization system is energized to give magnetic force for pressurization, waste water is discharged after the test is completed, and test data are exported. The electromagnetic effect is used for pressurization, compared with a traditional deepwater explosion testing device, the device has the advantages of being environmentally friendly, efficient, short in experimental period, simple in system design and low in device cost, and a new thought can be provided for follow-up research.
Owner:ANHUI UNIV OF SCI & TECH
A Measuring Method of Derivative of Aircraft Longitudinal Moment to Pitch Angular Velocity
ActiveCN104361213BLong test cycleIncreased complexityAerodynamic testingSpecial data processing applicationsMeasuring instrumentAngular velocity
The invention discloses a method for measuring a derivative of aircraft longitudinal moment on pitching angular velocity. The method comprises the following steps: firstly constructing a testing wind tunnel, wherein the testing wind tunnel comprises a wind tunnel inlet, a wind tunnel pipeline and a rectifying blade; then horizontally and fixedly arranging an aircraft model in the wind tunnel pipeline through a supporting frame and arranging a data measuring instrument at the connection portion of the aircraft model and the supporting fame; secondly, rotating the testing wind tunnel at a constant speed at the angular velocity q1, measuring the longitudinal moment (img file='DDA0000593412430000011.TIF' wi='96' he='53' / ) of the aircraft model at the moment; successively, rotating the testing wind tunnel at a constant speed at the angular velocity q2 and measuring the longitudinal moment (img file='DDA0000593412430000012.TIF' wi='93' he='52' / ) of the aircraft model at the moment; finally, calculating the derivative of the aircraft longitudinal moment on the pitching angular velocity according to the q1 and the q2 as well as (img file='DDA0000593412430000013.TIF' wi='204' he='55' / ). The method has the benefit that the derivative of aircraft dynamic torque on pitching angular velocity can be directly measured through the wind tunnel test, so that the test period, the test expense and the test complexity are effectively reduced.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
A system for evaluating the environmental stress resistance performance of polyethylene resin and its application
ActiveCN106645662BLong test cycleShorten the test cycleMaterial testing goodsEnvironmental resistanceHazardous substance
The present invention relates to a system for evaluating the environmental stress cracking resistance of a polyethylene resin, wherein the system comprises the aqueous solution of a nonionic surfactant and an anionic surfactant, and further has the following advantages that 1) the electrostatic stability of the mixed surfactant is improved to make the active agent molecular chain easily form micelles so as to provide a synergistic effect and substantially improve the efficiency of the surfactant; and 2) the surfactant component cannot release nonylphenol and other components toxic and harmful for human body during the use process, such that the advantages of safety and environmental protection are provided.
Owner:CHINA PETROLEUM & CHEM CORP +1
A Multiphysics Coupling Field Calculation Method for Reflector Antennas
ActiveCN112329292BAccurately get the displacementImplement coupled computingDesign optimisation/simulationSpecial data processing applicationsEngineeringComputational physics
The invention discloses a multi-physics coupling field calculation method of a reflector antenna, relates to the technical field of reflector antenna analysis, and aims to provide a calculation method with high precision, no conversion error and strong practicability. The present invention mainly includes the following processes: establish models and assign values in the fluid field and temperature field respectively, enter the solid field analysis after format conversion, obtain surface precision under different working conditions, and then perform surface precision synthesis; deformed reflective surface and The results of the feed vector are superimposed, imported into the high-frequency electromagnetic EDA software, and the boundary of the reflective surface is determined, and the data points of the reflective surface are interpolated to form a continuous reflective surface, and the calculation parameters are set. After calculation, the final electromagnetic result. The invention effectively integrates multi-field coupling analysis, and is especially suitable for the design, index budget and strength check of various reflector antennas.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Fluid-solid coupling field calculation method of double-reflector antenna
ActiveCN112329356AImplement coupled computingAchieve conversionSustainable transportationDesign optimisation/simulationComputational physicsField analysis
The invention discloses a fluid-solid coupling field calculation method of a double-reflector antenna, relates to the technical field of reflector antenna analysis, and aims to provide a calculation method which is high in precision, free of conversion errors and high in practicability. The method mainly comprises the following steps: establishing a model and a computational domain in fluid fieldpretreatment software, and obtaining an intermediate format file after conversion; importing the intermediate format file into fluid field software, determining a solver according to the Reynold number, and obtaining a fluid field result; performing data processing on the fluid field result to obtain a resistance coefficient, a lift coefficient and a moment coefficient of the antenna; converting the format of the fluid field result, then importing the fluid field result into solid field software, establishing a relation coupling unit in the solid field, and obtaining a solid field result. According to the method, fluid and solid field analysis is effectively integrated, and the method is particularly suitable for design, index budget and strength check of various reflector antennas.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Method for evaluating hydrogen-induced delayed fracture resistance of ultrahigh-strength automobile steel plate
PendingCN113567239ALong test cycleEasy to operatePreparing sample for investigationMaterial strength using tensile/compressive forcesSteel platesStructural engineering
The invention relates to the technical field of material performance detection, in particular to a method for evaluating hydrogen-induced delayed fracture resistance of an ultrahigh-strength automobile steel plate. According to the method, disc-shaped samples are adopted; drawing forming is conducted on the samples to obtain cup-shaped samples with different drawing ratios; the cup-shaped samples with different drawing ratios are placed in a hydrogen filling medium, and soaked for the upper limit time; the number of fractured samples and the number of unfractured samples in each diameter group are observed and recorded; the maximum sample diameter (D0) max allowed to be adopted is determined when the sample is not broken; the critical drawing ratio LDRHIC of the material is calculated; and the LDRHIC is used as an evaluation index of the hydrogen-induced delayed fracture resistance of the material, the larger the LDRHIC is, the stronger the hydrogen-induced delayed fracture resistance of the material is, and the more difficult the hydrogen-induced delayed fracture of the material is. According to the invention, the hydrogen-induced delayed fracture behavior of the ultra-high-strength automobile steel part with the complex shape under the actual forming condition and the service condition can be better simulated, and the hydrogen-induced delayed fracture resistance of the material can be simply, effectively and accurately evaluated by taking the critical drawing ratio LDRHIC as an index.
Owner:ANGANG STEEL CO LTD
Multi-physical coupling field calculation method of reflector antenna
ActiveCN112329292AAccurately get the displacementImplement coupled computingDesign optimisation/simulationSpecial data processing applicationsComputational physicsEngineering
The invention discloses a multi-physical coupling field calculation method for a reflector antenna, relates to the technical field of reflector antenna analysis, and aims to provide a calculation method which is high in precision, free of conversion errors and high in practicability. The method mainly comprises the following steps: establishing models and assigning values in a fluid field and a temperature field, performing format conversion, performing solid field analysis to obtain surface precision under different working conditions, and performing surface precision synthesis; and superposing a deformed reflecting surface and a feed source vector result, importing the superposed result into high-frequency electromagnetic EDA software, determining the curved surface boundary of the reflecting surface, carrying out interpolation processing on the data points of the reflecting surface to form a continuous reflecting surface, setting calculation parameters, and carrying out calculationto obtain a final electromagnetic result. The method effectively integrates multi-field coupling analysis, and is particularly suitable for design, index budget and strength check of various reflectorantennas.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Mildew-proof identification swab as well as preparation method, use method and application thereof
PendingCN114438166ALong test cycleEasy to operateMicrobiological testing/measurementBiotechnologyMicrobiology
The invention discloses a mildew-proof identification swab as well as a preparation method, a use method and application thereof, and belongs to the technical field of efficacy evaluation. The mildewproof identification swab is prepared by taking milk rich in animal protein or soymilk rich in plant protein as a bacterial carrier and a bacterial carrier supporting material polypropylene non-woven fabric, uniformly mixing the bacterial carrier raw material and water at 40-60 DEG C according to a mass ratio of 1: (6-8) in a clean environment at room temperature, cooling to room temperature, and packaging to obtain the mildewproof identification swab. And uniformly spraying the mixture which is 1.25 times of the weight of the bacterial carrier supporting material on the surface of the bacterial carrier supporting material until the mixture is completely absorbed. After a sample to be detected is in full contact with the mildew-proof identification swab, the sample is subjected to sealed contact culture for 72 hours under the conditions of constant temperature, constant humidity and illumination, and the mildew-proof effect of the sample to be detected is subjected to sensory evaluation. Compared with a traditional mildew-proof test, the mildew-proof identification swab for evaluating the mildew-proof effect has the advantages of being short in period, high in timeliness, visual in result, wide in application, easy to operate and low in cost.
Owner:上海膜益信息科技有限公司
A simulation and test method for the function mode of electronic parking system
The invention belongs to the technical field of electronic parking of passenger cars, and specifically relates to a simulation and testing method of a functional mode of an electronic parking system. This method uses a rapid prototyping system to replace the ECU, using a real EPB sample and a virtual electronic parking switch. The control method is as follows: the upper computer sends control signals (including EPB switch mode signals, etc.) The forward and reverse signals are sent to the driving end of the rapid prototyping system, and the driving end of the rapid prototyping system sends the EPB motor circuit current signal to the signal acquisition module, and the current digital signal is sent back to the mode control module by the signal acquisition module, forming a closed-loop control, driven by the rapid prototyping system The terminal drives the EPB to work to realize the emulation of the EPB function mode. The measurement of the EPB functional mode is realized by the clamp release time measurement module.
Owner:CHINA FIRST AUTOMOBILE
Simulation testing machine for evaluating cooling uniformity of internal combustion engine
InactiveCN102226741BOptimize layoutLong test cycleInternal-combustion engine testingExternal combustion engineWater jacket
The invention discloses a simulation testing machine for evaluating cooling uniformity of an internal combustion engine. The simulation testing machine comprises: an internal combustion engine body, a water pump, a high-temperature oil pump, a first motor, a second motor, a flowmeter of cooling water, a cooling fan, a radiator, a first throttle valve, a second throttle valve, a sensor of outlet temperature of cooling water, a sensor of outlet pressure of cooling water, a boiler of heat transfer oil, a high-temperature flowmeter, a simulated piston, a measuring plate, and the like. According to the invention, the boiler of heat transfer oil is used to heat silicone oil as well as make the heated silicone oil circulated and pass a cylinder of the internal combustion engine so as to simulatethe actual heating of the internal combustion engine; besides, cyclic cooling liquid is used for cooling the simulation testing machine. According to the testing apparatus, the measuring plate is arranged between a cylinder cover of an engine and the body, so that relevant sensors van be arranged to measure internal parameters of a cooling water jacket of the internal combustion engine. Compared with an actual internal combustion engine, the simulation testing machine has advantages of simple structure and short test period; in addition, a function of high-efficient measurement of cooling uniformity of the internal combustion engine can be realized with low cost.
Owner:ZHEJIANG UNIV
Batch measuring system for silicon photoelectric devices
InactiveCN110703018ALong test cycleIncrease usageSemiconductor operation lifetime testingMeasurement instrument housingEngineeringLight source
The invention relates to a batch measuring system for silicon photoelectric devices, which is characterized by comprising a pulse driver, LED (Light-Emitting Diode) light sources, optical integrationdevices, bundling optical fibers, silicon photoelectric device measuring boxes, a data acquisition system, a picoammeter and a power supply; wherein the pulse driver is connected with an input end ofat least one LED light source, an output end of the each LED light source is connected with the corresponding silicon photoelectric device measuring box successively through the corresponding opticalintegration device and the corresponding bundling optical fiber, the each silicon photoelectric device measuring box is provided with a plurality of to-be-measured silicon photoelectric devices therein, the bundling optical fiber is used for uniformly distributing an optical pulse emitted by the LED light source to each to-be-measured silicon photoelectric device in the silicon photoelectric device measuring box; an output end of the each to-be-measured silicon photoelectric device is connected with the data acquisition system; the silicon photoelectric device measuring boxes are connected inseries, and the silicon photoelectric device measuring box arranged at one end is connected with the power supply through the picoammeter. The batch measuring system of the invention can be widely applied to the technical field of batch measurement.
Owner:INST OF MODERN PHYSICS CHINESE ACADEMY OF SCI
Fluid-solid electromagnetic three-field coupling calculation method of double-reflector antenna
ActiveCN112597707AStrong maneuverabilityImplement coupled computingDesign optimisation/simulationSpecial data processing applicationsComputational physicsComputational model
The invention discloses a fluid-solid electromagnetic three-field coupling calculation method for a double-reflector antenna, relates to the technical field of reflector antenna analysis, and aims toprovide a calculation method which is high in precision, free of conversion errors and high in practicability. The method mainly comprises the following steps: establishing a model and a computationaldomain in fluid field pretreatment software, importing an intermediate format file into the fluid field software, and solving to obtain a fluid field result; converting the format of the fluid fieldresult, importing the fluid field result into solid field software, establishing a relationship coupling unit in the solid field, and solving to obtain a solid field result; and performing interpolation processing on the solid field result in electromagnetic software to obtain an electromagnetic calculation model, and performing calculation to obtain a final electrical result. According to the method, fluid, solid and electromagnetic three-field coupling analysis is effectively integrated, and the method is particularly suitable for design, index budget and strength check of various reflectorantennas.
Owner:NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Method for indirectly judging polymerization degree of insulation paper of oil-immersed transformer
PendingCN114397332AReduce maintenance costs and labor costsReduce economic lossMaterial testing goodsMaterial capacitanceProcess engineeringRelative humidity
The invention relates to a method for indirectly judging the polymerization degree of insulation paper of an oil-immersed transformer. The method comprises the following steps: monitoring the content of micro-water in transformer oil by using a thin-film capacitance method; the absolute content of the micro-water in the oil is calculated through the relative humidity based on the indirect measurement method of the micro-water content in the oil with the relative humidity. The system has the advantages that degassing is not needed, the content of dissolved gas hydrogen and micro-water in transformer oil is monitored in real time, and a basis is provided for deriving the polymerization degree of insulation paper. The problems that in traditional polymerization degree detection, on-site paper sampling is needed, sampling is not uniform, the test period is long, the test efficiency is low, samples are dispersed, some aged parts are not easy to sample, and the measurement result cannot reflect the overall insulation aging degree are solved. In the detection process, the equipment does not need to be shut down or disassembled, the maintenance cost and labor cost of the equipment are reduced, the economic loss caused by shutdown is reduced, and the operation safety of the equipment and the personal safety guarantee of inspection personnel are improved.
Owner:ZHEJIANG ZHENENG TECHN RES INST +1
A device and method for electrically accelerated concrete dissolution test under high hydraulic gradient
ActiveCN107941688BAccelerated corrosion testIncrease movement speedWeather/light/corrosion resistanceElectricityDissolution
Owner:HOHAI UNIV
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