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236 results about "Scale test" patented technology
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Scales Test. This section tests whether you can determine the notes that make up any given scale randomly chosen from the selected categories. They include major, minor, and modes. The major and minor categories include pentatonic and blues scales. The specific modes include ionian, dorian, phrygian, lydian, mixolydian, aeolian, and locrian.
Method and system for massive large scale test infrastructure
InactiveUS20110083122A1Reliable test resultsReliability issueError detection/correctionSpecific program execution arrangementsApplication serverSoftware engineering
An automated system is provided to support massive scale grid of machines in a rapid, multi-developer coding environment. The system has virtual testing environments that are created from template machines, supporting various software versions for various code branches. The grid is built by having a small subset of template machines (e.g. with Oracle 9g, 10g, and application server installations), images of the template machines, virtual machine instances created by applying one or more of the image templates, which then are used by the virtual testing environment. Upon receipt of code changes, changes are checked-out, compiled, tested on various test feeds on a virtual testing environment, which is destroyed and re-created after every test run. Any software version upgrades or bug fixes need to be applied only to the template machines. The number of virtual machines associated with any particular template machine is dynamically configurable to provision for optimal use of testing machines.
Owner:SALESFORCE COM INC
Item tracking, database management, and relational database system associated with multiple large scale test and assessment projects
InactiveUS20050086257A1Flexibility in capacityConvenient to accommodateOffice automationSpecial data processing applicationsTest documentRelational database
A system and process includes: a relational database that has a core database of global rules and project data, an item tracking database, a scanning and image management database, and a scoring database; an enterprise integrated application software program and computer network; and a web interface linking host operations and users; all of which is used for generating a production order and packing schedule of test documents from the rules and project data, for tracking production, packing, shipping, return shipping, and processing of actual test documents by using unique identifiers assigned to every document and monitoring and recording every movement of every document and appending all records of movement and other changes of condition to the original project data in the relational database, for scanning all documents into image form and storing and scoring the images, and for generating reports based on the scores and demographics of the testees.
Owner:MEASURED PROGRESS
Method and device for measuring merging unit time characteristics
The invention discloses a method for measuring merging unit time characteristics. The method is characterized by comprising steps that: first step, synchronization of the merging unit and a measuring device is realized through a clock synchronization signal; second step, an SV message of the merging unit is received by the measuring device, and a standard interval of the SV message is acquired; third step, a time difference of arrival time of the SV message to the measuring device and the clock synchronization signal is measured by the measuring device; fourth step, sending interval jitter of the SV message is locked by the measuring device; fifth step, rated sampling time-delay of the merging unit is acquired; and sixth step, discreteness of the merging unit for sending the SV message is acquired. Through the method and the device, problems that a merging unit time characteristic measuring system in an intelligent transformer station is complex and a measuring method is tedious are solved, measuring efficiency and measuring accuracy are improved, so an effective method is provided for a large scale test on the intelligent transformer station after popularization construction.
Owner:STATE GRID CORP OF CHINA +3
Method and system for detecting abnormal use of voice input equipment
ActiveCN102324229ATroubleshoot Voice Quality DiscrepanciesEnsure fairnessSpeech analysisSpoken languageCombined method
The invention discloses a method and system for detecting abnormal use of voice input equipment. A characteristic extracting mode which is more comprehensive to remote voice signal characteristics and closer to human perception is adopted in the invention so as to roughly judge background voice, normal voice and remote voice. On the basis of classification of audio signals, by adopting the combined method of a modern signal processing technology and a statistical machine learning theory, the problem of multiple limits on front-end voice input by a traditional method is overcome so that signal-level quality scoring is closer to human scoring. According to the invention, the difference problem of front-end input voice quality due to artificial use errors of the equipment in large-scale tests of spoken language is solved.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI
Small-scale shock reactivity and internal blast test
An apparatus for conducting a small-scale shock reactivity and internal blast test (SSBT), and a related test method that simulates a large scale test of explosive materials while employing small quantities of materials for the characterization. The apparatus includes a small scale shock reactivity test (SSRT) device, and an internal blast test device including a pressure chamber with an accessible interior, a pressure transducer, a multipurpose port provides an electrical connection to the shock reactivity test device, and a small gas port. The SSRT device is housed within the pressure chamber, and gases and materials produced during a small scale shock reactivity test are quasi-statically retained by the pressure chamber. The pressure transducer is in communication with an instrument that can display the pressure detected in the pressure chamber for analysis.
Owner:THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Wafer scale test interfact unit: low loss and high isolation devices and methods for high speed and high density mixed signal interconnects and contactors
InactiveUS20160341790A1Reduce lossGood precisionParticular array feeding systemsElectronic circuit testingHigh densityEngineering
Devices and methods for multilayer packages, antenna array feeds, test interface units, connectors, contactors, and large format substrates. The device comprising a 3D coaxial distribution network structure including a plurality of coaxial transmission lines separated by a first pitch at the input and a second, wider pitch at the output thereof.
Owner:CUBIC CORPORATION
Method for monitoring plume contamination of attitude control engine of spacecraft
The invention relates to a method for monitoring plume contamination of an attitude control engine of a spacecraft, in particular to a method for monitoring plume contamination of an attitude control engine of a spacecraft by adopting a quartz-crystal microbalance, belonging to the technical field of aviation. In a monitoring device for the plume contamination of the attitude control engine of the spacecraft, a set of quartz-crystal microbalance monitor is arranged on the sliding rail of the existing space electric propulsion ground simulation testing equipment, and two sets of quartz-crystal microbalance monitors are arranged behind an engine nozzle on the surface of a vacuum chamber. In the method, an attitude engine is adopted to ignite so as to ensure that the engine jets heat flow gas, and contaminants are generated when the gas is condensed; and the frequency and temperature of the quartz-crystal microbalance are monitored online in situ and saved. The method improves the sensitivity of plume contamination monitoring of the attitude control engine in China reaching 1.10*10-9 to 4.42*10-9, and the testing process is stable and reliable and has good repeatability, so the method is suitable for large-scale tests.
Owner:NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH
Method and device for calibrating mobile phone production test system
InactiveCN104853021AGuaranteed accuracyQuick measurementSubstation equipmentGeneral purposeEngineering
The invention discloses a method and a device for calibrating a mobile phone production test system. The method comprises: performing tests radio frequency lines through a test device, to obtain line loss of the radio frequency lines; performing tests on a standard general-purpose tester through the test device, to obtain instrument error of the standard general-purpose tester; and determining a calibration value based on the line loss and the instrument error, so that the standard general-purpose tester can calibrate the standard general-purpose tester and the radio frequency lines based on the calibration value, that is, the radio frequency lines and the standard general-purpose tester are calibrated through the test device. The device can rapidly measure while ensuring precision. The method and the device can be suitable for large-scale test wireless terminal systems.
Owner:WEIZHUN BEIJING ELECTRONICS TECH CO LTD
Quality Control Module for Biomarker Generator System
InactiveUS20110070158A1Reduce in quantityLess stringent infrastructure requirementMaterial analysis by observing effect on chemical indicatorComponent separationQuality controlEngineering
A sample card and automated quality control module for a radiopharmaceutical synthesis system for conducting quality control tests on approximately one (1) unit dose of a radiopharmaceutical biomarker for use in positron emission tomography. The sample card and quality control module allow operators to conduct quality control tests in reduced time using micro-scale test samples from the radiopharmaceutical solution. The sample card works in conjunction with a microfluidic radiopharmaceutical synthesis system to collect samples of radiopharmaceutical solution on the scale of 5-20 microliters per sample. The sample card then interacts with the quality control module to feed the samples into a number of test vessels, where the samples undergo a number of automated quality control tests.
Owner:ABT MOLECULAR IMAGAING
Large-scale test-oriented examinees identity fingerprint verification system
InactiveCN101615246AAccurately determineEnsure safetyCharacter and pattern recognitionIndividual entry/exit registersTest takerValidation methods
Owner:HARBIN ENG UNIV
Production method for extracting and purifying hyaluronic acid
The invention discloses a production method for extracting and purifying hyaluronic acid, for solving the problems such as long process route, long production period, high labor intensity, more human factors influencing product quality and relatively low product yield, existing in the purification of the traditional CPC (Cetyl Pyridinium Chloride) complexing ethanol sedimentation technology. The production method comprises the following steps of: fermentation liquor inactivation, primary alcohol precipitation, rough separation, redissolution, primary filtering decontamination, secondary filtering purification, alcohol precipitation crystallization, drying and smashing. The invention provides an industrial extraction and purification method of fermentation liquor for producing the hyaluronic acid through a streptococcus zooepidemicus fermentation method. The industrial extraction and purification method provided by the invention has the characteristics of short process route and production period, high adaptability, low production cost and good effect, can be concluded into a secondary filtering and secondary alcohol precipitation extraction process and is proved to be feasible through a small-scale test and a pilot scale test in a laboratory and verification in actual production and can meet the requirement for industrialized production.
Owner:SICHUAN HENGYI TECH
Test method for measuring bond stress between reinforcing steel bars and concrete
ActiveCN101819134AProduction labor savingSimple test methodUsing mechanical meansMaterial analysisPresent methodReinforced concrete
The invention discloses a test method for measuring bond stress between reinforcing steel bars and concrete. A groove is formed longitudinally along the surface of the reinforcing steel bars, and a foil strain gauge is embedded into the groove to fulfill the aim of measuring the stress of the reinforcing steel bars distributed along the embedded length. The test method has the advantages of simpleness, convenience, quickness, labor saving and cost saving for manufacturing of test pieces, convenient waterproof and moistureproof treatment, low rate of waste pieces, small damage to the reinforcing steel bars, and suitability for manufacturing test pieces for large-scale tests and the like, and is easy to popularize to the field of experimental study on reinforced concrete structures.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Electric propulsion spacecraft plume parameter acquisition method
ActiveCN105067274AHigh sensitivityImprove accuracyGas-turbine engine testingJet-propulsion engine testingPlasma densityPollution
The invention provides an electric propulsion spacecraft plume parameter acquisition method. In a condition of simulating a spacecraft orbit environment, plasma potential, plasma density, electron temperature, plasma ion energy spectrum, electric propulsion plume pollutant deposition and the like, and distribution of space parameters around a thruster are tested; due to use of an oil-free vacuum system, a thin gas atmosphere and a clean environment condition are provided for the method, accuracy of measured data during the test process is greatly enhanced, and an electric thruster test operation risk is reduced; and pollution data in electric thruster multi-parameter diagnosis equipment are measured and acquired, electric propulsion spacecraft plasma plume parameter distribution and a spacecraft in-orbit performance degradation condition in a simulated space environment condition can be estimated, and guidance and basis are provided for research on the electric propulsion spacecraft and service life estimation. The method of the invention is applied to electric propulsion spacecraft engine plume feature test and can be applied to scale test.
Owner:LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
Method and structure for collecting tiny dust particles
InactiveCN102175486AImprove in situ monitoring sensitivitySimple structural designWithdrawing sample devicesMass ratioEngineering
The invention discloses a method and structure for collecting tiny dust particles and provides a method and structure for collecting tiny dust particles from a spacecraft orbit environment. By adopting the method, the charge-mass ratio of tiny dust particles can be measured quantitatively under the condition of simulating the spacecraft orbit environment, and the national mass in-situ monitoring sensitivity is increased to 1.10*10<-9> to 4.42*10<-9> g / cm<2>; a dust particle charge-mass ratio testing instrument is simple in structural design and mainly comprises a circular grid plate, a hollow cylindrical capacitor and a QCM (Quartz Crystal Microbalances), so that the accuracy of measured data is greatly increased in the testing process and the load using risk of a spacecraft orbit is lowered; in the method, the hollow cylindrical capacitor is used, the design size of the instrument is reduced and a signal acquisition circuit and an assembly box are used, so that the charge-mass ratio of tiny dust particles is well measured and the testing process is stable and reliable; and due to the adoption of the QCM, the mass change of passing particles is well measured, the testing process is stable and reliable and high reproducibility is achieved. The method and the structure have the characteristic of in-situ monitoring of the charge-mass ratio of particles in the spacecraft orbit environment, and are suitable for scale test, production, research and the like.
Owner:NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH
Incontinence garments with a silver lining infection stopper
InactiveUS20100021512A1Avoid painSimple structureBiocideInorganic active ingredientsBacteroidesResistant bacteria
Antibiotics used to cure Uterine Tract Infections have resulted in the growth of MRSA. and other antibiotic resistant bacteria. The CDC guidelines state “Disposable diapers cause 95% of all UTI'S”. The procedures used for “prevention” are ineffective because millions of bacteria in incontinence garments continue to double every 20 minutes. Silver ions in bandages are used to cure severly damaged skin, such as in burns. The best two in a large scale test achieved results in just 30 minutes. This Invention uses silver ions in linings next to the skin to stop the growth of over 250 kinds of infectious bacteria on it's surface and the body parts it touches. It achieves results in 30 minutes, equal to the most highly rated bandages . . . for every level of incontinence for both sexes.
Owner:ARRON STANLEY
Multi-scale test machine for measuring lubricating oil film by optical interference method
InactiveCN101514889ASignificant technological progressSimple structureUsing optical meansFlat glassMotor drive
The invention discloses a multi-scale test machine for measuring lubricating oil film by optical interference method, comprising a base, an electric motor, a drive device, a supporting device and a loading device; the motor drives a flat glass horizontally and slidingly arranged on the base to move horizontally to and fro through the drive device; the supporting device is a floating supporting device and supports the test pieces to be rotatably contacted with the lower surface of the flat glass; the loading device is a lever type loading device and supports the floating supporting device to cause the test pieces to exert pressure and load on the flat glass, upper part of which is fixed with a microscope for measuring oil film; lens of the microscope aligns to the rotatable contact line between the flat glass and test pieces. The invention has the advantages of pure rotating, continuousness and multi-scale, overload, simple structure and strong practicality.
Owner:SHANGHAI UNIV +1
Electromagnetic parameter optimization design-based scaled composite material preparation method
ActiveCN105224762ASatisfy the scaling relationshipMeet the precision requirementsSpecial data processing applicationsMaterials preparationMixed materials
The invention discloses an electromagnetic parameter optimization design-based scaled composite material preparation method, which comprises the following steps: (1) calculating a reflection coefficient of an original material; (2) carrying out electromagnetic parameter tests on mixed materials, namely carrying out electromagnetic parameter tests on the mixed materials at different proportions according to the scale requirements; (3) establishing an electromagnetic parameter library of the mixed materials at different proportions, namely, combining electromagnetic parameter test results with an effective medium theory and carrying out correction to obtain the electromagnetic parameter library; and (4) optimizing the electromagnetic parameter, namely carrying out optimization on the mixed materials according to the reflection coefficient of the original band material, and obtaining a proportion scheme of the scaled composite material through the electromagnetic parameter library. According to the electromagnetic parameter optimization design-based scaled composite material preparation method disclosed by the invention, the mixed materials which meet the scale relationship and are realizable in engineering are obtained through an electromagnetic parameter optimization design; the accuracy requirement of the scale test is met; and the electromagnetic parameter optimization design-based scaled composite material preparation method is an effective composite material electromagnetic scale test scheme.
Owner:SHANGHAI RADIO EQUIP RES INST
In-situ monitoring method for outgasing contamination of nonmetallic materials on optical surface of spacecraft
ActiveCN101876612AImprove the sensitivity of in-situ monitoring of pollutionImprove accuracyMaterial weighingAviationMetallic materials
The invention relates to an in-situ monitoring method for outgasing contamination of nonmetallic materials on an optical surface of a spacecraft, belonging to the technical field of aviation. In the method, a quartz wafer is adopted to monitor contamination level on the optical sensing surface of the spacecraft in situ, and is arranged in a vacuum chamber; a nonmetallic material is arranged in the visual range of a quartz-crystal microbalance to ensure that the material outgases in the vacuum condition; a spectrophotometer and a vacuum system are adjusted, and the nonmetallic material is heated to lead contaminants to escape; frequency and temperature of the quartz-crystal microbalance are monitored online in situ and stored; and the system is closed. The in-situ monitoring method for the outgasing contamination of the nonmetallic materials on the optical surface of the spacecraft has high sensitivity reaching 1.10*10-9 to 4.42*1-9, and the testing process is stable and reliable, and has good repeatability. The method is suitable for large-scale tests.
Owner:NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH
Regression test method, device and system
ActiveCN105718371AEasy maintenanceSolve efficiency problemsSoftware testing/debuggingRegression testingTest efficiency
The invention provides a regression test method, a regression test device and a regression test system. The regression test method comprises the following steps: generating a test task according to a regression test plan; checking test item files corresponding to the test task from a test case library, wherein the test item files comprise test group files which need to be operated to achieve the test task, and the test group files comprise test specification files corresponding to test cases; calling the test cases corresponding to the test specification files in the test group files, configuring corresponding test cases according to the test specification files so as to perform regression tests; managing test results of the regression tests. By adopting the regression test method, equipment is automatically operated to achieve convenient test case maintenance and large-scale test case implementation, meanwhile the purposes of test flexibility, convenience, instantaneity and maintenance convenience can be also achieved, the development and test efficiency can be improved, and the problems that a conventional regression test is low in efficiency, high in time price and high in labor cost can be solved.
Owner:SHENZHEN PANGO MICROSYST CO LTD
Test method and system for enhancing calibration efficiency of wireless comprehensive test instrument
InactiveCN101452068AGuaranteed level of accuracyFast testElectrical measurementsTransmission monitoringCombined testTester device
The present invention provides a method for increasing the adjusting efficiency of wireless communication all-purpose tester. The method divides the testing standard into two parts, wherein the first part is used for testing the transmitter part of adjusted all-purpose tester, and the other part is used for testing the analyzer part of adjusted all-purpose tester. Simultaneously a PSU radio-frequency switch matrix is used in the system. The invention also discloses a corresponding system. The method and system use the detecting device with same number of that in the traditional method and greatly increases the testing speed. Meanwhile the PSU radio-frequency switch matrix is used in the system for further increasing the working efficiency, perfecting the testing system, leading the testing flow path more scientific and satisfying the requirement of large-scale test of tested instruments.
Owner:TELECOMM METROLOGY CENT OF MINIST OF IND & INFORMATION TECH +1
UEFI (unified extensible firmware interface) based server NVME (non-volatile memory express) hard disk back plate function testing method
ActiveCN105511993AThe testing process is simpleEasy to testFaulty hardware testing methodsTest fixtureUSB
The invention discloses a UEFI (unified extensible firmware interface) based server NVME (non-volatile memory express) hard disk back plate function testing method. The testing method comprises steps as follows: 1) a machine is started through a uefi shell; 2) a uefi starting script is guided into a testing USB disk; 3) a procedure performs quantity checking and read-write function testing on the NVME hard disks on a back plate according to parameters including 'the number of the NVME hard disks, the number of to-be-tested sectors and the offset'; 4) the function of an NVME hard disk back plate is normal and the NVME hard disk back plate is a non-defective product if the number of the NVME hard disks is consistent and the read-write function is normal, and otherwise, the NVME hard disk back plate is a defective product. By means of the method, the problems that an existing testing method consumes long time and is dependent on a system, an operating system requires daily maintenance and large-scale testing of a factory is hindered are solved, simplicity in operation, fast speed, saving of testing time and test fixtures and high expandability and flexibility during large-scale testing of the NVME hard disk back plate are realized, and testing of the NVME hard disk back plate is simplified and rapid.
Owner:LANGCHAO ELECTRONIC INFORMATION IND CO LTD
Extra-high voltage reference capacitor
ActiveCN101183121ASolve the problem of inconvenient transportationIncrease the voltage coefficientResistance/reactance/impedenceCapacitorsPositive pressureLow voltage
The present invention is an ultra-high voltage standard capacitor, which is an upright structure in which both the high-voltage electrode and the low-voltage electrode are fixed in the pressure vessel tank at the bottom with an insulating support, and overcomes the influence of the increase of the voltage level of the standard capacitor on the increase of its voltage coefficient. problem; for the field test structure, the present invention divides the standard capacitor into three independently sealed air chambers, which solves the inconvenient transportation problem of large-scale test equipment, so as to be used for field test and detection. When the present invention is used for UHV standard capacitors The insulation level is extremely high, the short-term power frequency voltage withstand capacity can exceed 1600kV, the long-term rated working voltage exceeds 1200kV, and the voltage coefficient is better than 2×10-6. The invention can also be used in the production of standard capacitors with a rated working voltage of less than 1600kV voltage level.
Owner:WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
Wheatstone bridge compensation resistance test method
ActiveCN102368086AProgrammable high valueImprove developmentResistance/reactance/impedenceCurrent meterElectrical resistance and conductance
The invention relates to a Wheatstone bridge compensation resistance test method which comprises the following steps: a. connecting a parallel branch formed by an ammeter and a switch at two ends of each bridge arm resistor of a Wheatstone bridge respectively; b. at each time, connecting only one ammeter to work, measuring corresponding current I1, I2, I3, and I4 of bridge arm resistors respectively, and utilizing a formula R=I4*Vcc / I1*I3-I2*I4 or R=I1*Vcc / I2*I4-I1*I3 to calculate a resistance value of R. Compared with the prior art, the Wheatstone bridge compensation resistance test method has the advantages that: through an electrical test circuit and mathematical formula transformation, a resistance value needs to be compensated at a bridge arm can be accurately calculated, a programmable value of a calculating method is high, the method is easy to be developed on a test system, a large scale test of on-line production is realized, and a problem is solved with high efficiency.
Owner:EAST CHINA INST OF OPTOELECTRONICS INTEGRATEDDEVICE
Iris image database synthesis method based on block texture sampling
ActiveCN101404059AHigh similarityStrong simulationCharacter and pattern recognitionPrediction algorithmsSynthesis methods
The invention relates to an iris image database synthesis method which is based on the massive texture sampling, comprising the following steps: the pretreatment of an iris image is carried out, and an obtained specific target region is taken as an input image of synthesized textures. The method effectively obtains clean iris textures from the real iris image; the iris image synthesis which is based on the massive texture sampling obtains a virtual synthesized iris image from the real iris image by the non-parametric sampling method; a plurality of frames of similar inner iris images are synthesized from the virtual image by simulating the change characteristics of an iris under various external and internal conditions, thereby generating a large-scale iris image database; the synthesized normalized iris image is converted to the circular iris; and an evaluation system of the synthesized iris image database is established. The method is used for the large-scale test of the iris recognition algorithm for comparing and predicting the performance of the algorithm and can also be used as the virtual image to carry out the attack test on an existing system, thereby adding the anti-counterfeiting function for an application system.
Owner:BEIJING IRISKING
Modular PCB testing jig
InactiveCN104777417AClear structureCompact structureElectronic circuit testingVacuum extractionEngineering
The invention relates to a modular PCB testing jig. The modular PCB testing jig comprises a testing module, a pin plate module, a supporting plate module and a covering plate module. The testing module comprises a testing platform, a support, a counter, a control board and a testing instrument. The pin plate module comprises a base, a pin plate, a sponge pad and a lower surrounding frame, wherein detection pins, spacers and springs are arranged on the pin plate, the base plate is provided with an air exhaust hole communicated with a vacuum extraction assembly, and the lower surrounding frame and the pin plate form a first containing cavity. The supporting plate module comprises a supporting plate, a sponge pad, a counter contact, an upper surrounding frame assembly, wherein the supporting plate is arranged in the first containing cavity, the upper surrounding frame assembly and the supporting plate define a second containing cavity for containing a PCB, and the supporting plate is provided with pin holes. The upper end faces of the pin plate and the supporting plate are both provided with a layer of copper foil. The covering plate module comprises an air cylinder and a cover plate fixed to a piston rod of the air cylinder, and pressing rods and a counter contact touch pin are arranged at the lower end of the cover plate. The modular PCB testing jig is compact in structure, convenient to maintain, accurate in test, high in automatic degree and capable of meeting the demand for large-scale test.
Owner:CHANGZHOU COLLEGE OF INFORMATION TECH
Cutterhead reduced scale test table of full face rock tunnel boring machine and design method
InactiveCN104280227AControl loadIn line with the real situationMachine part testingModel selectionTunnel boring machine
The invention provides a cutterhead reduced scale test table of a full face rock tunnel boring machine and a design method, and belongs to the technical field of full face rock tunnel boring machines. According to the method, the proportional relation of related physical quantities of an actual cutterhead of the full face rock tunnel boring machine and corresponding physical quantities of a test table cutterhead is obtained according to a geometric parameter, a structure feature and a load parameter of the actual cutterhead, the geometric parameter and the load parameter of the test table cutterhead are deducted, the structural feature of the test table cutterhead is determined, and design and model selection of test table components are achieved. The test table is of a three-dimensional structure and comprises a test table support, a main bearing assembly, a cutterhead rack, the cutterhead, a hydraulic actuator, a loading plate, a frequency-variable motor, a cutterhead cutter, a speed reductor, an acceleration sensor, a strain sensor, a micro force transducer and the like. The test table can simulate tunneling conditions of an the actual tunnel boring machine really, can test dynamic response and dynamic stress of the cutterhead, can test acceleration fatigue of the cutterhead with cracks, and improves accuracy of tests.
Owner:DALIAN UNIV OF TECH
Methods and apparatus for detecting and adjusting over-scanned images
ActiveUS7489336B2Television system detailsTelevision system scanning detailsComputer graphics (images)User input
A method for adjusting images displayed on a television set, the television set being coupled to receive image information from an image-generating electronic device. The method includes displaying on the television set, using test image information from the image-generating electronic device, a test image. The method also includes receiving, from a human operator, user input. The method further includes employing the user input to form scaled test image information that corresponds to a scaled test image, the scaled test image representing a scaled version of the test image. The method yet also includes displaying on the television set, using the scaled test image information, the scaled test image on the television set in lieu of the test image.
Owner:HEWLETT PACKARD DEV CO LP
Ship resistance prediction using a turbulent spot inducer in model testing
Exemplary practice of the present invention provides and implements a superior small-scale test model of a full-scale vessel hull describing a smooth axisymmetric body. The boundary layer of a smooth axisymmetric body moving in water is characterized, in succession from front axial-longitudinal end to back axial-longitudinal end, by a laminar region, an unstable region, an intermittent region, and a turbulent region. The smooth axisymmetric body's intermittent region is characterized by generation of turbulent spots, which bring about the turbulent region. According to exemplary inventive practice, a “turbulent spot inducer” (ring-shaped structure or structural arrangement) is strategically sized and placed to increase generation of turbulent spots, thereby reducing (axially-longitudinally shortening) the intermittent region and enlarging (axially-longitudinally lengthening) the turbulent region. The turbulent spot inducer is circumferentially coupled with the smooth axisymmetric body at a location coinciding with the smooth axisymmetric body's delimitation between its unstable region and its intermittent region.
Owner:THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY
Rule-based programmable 1553B bus system testing method
InactiveCN106209519AMeet developmentMeet the needs of the testBus networksMessage flowSystem testing
The invention provides a rule-based programmable 1553B bus system testing method, which comprises the following steps of step 1.concluding a system configuration rule, a message flow sign configuration rule and a message configuration rule of a 1553B bus through analyzing a message transfer mode and a message transfer process of each 1553 bus in a satellite; and step 2.realizing system monitoring, bus communication simulation, data storage and post-processing functions of the 1553B bus in a full testing process of the satellite by a ground testing system through identifying the system configuration rule, the message flow sign configuration rule and the message configuration rule of the 1553B bus. The method can be suitable for various stages of a satellite installation test of each sub-system of the satellite, a whole-satellite test and a large-scale test, and meets the requirements for satellite model research and test.
Owner:SHANGHAI SATELLITE ENG INST
Method for monitoring sensitive low-temperature surface pollution of spacecrafts
ActiveCN101876613AHigh sensitivityReduce risks in materials usedMaterial weighingMetallic materialsEngineering
The invention relates to a method for monitoring sensitive low-temperature surface pollution of spacecrafts, in particular to a method for monitoring sensitive low-temperature surface pollution of spacecrafts by utilizing a quartz crystal microbalance, belonging to the technical field of aerospace. The method is directly applied to monitoring surface pollution of infrared low-temperature remote sensors and other low-temperature space probes. The method is characterized by utilizing a liquid nitrogen refrigeration system and quartz wafers to simulate the sensitive low-temperature surfaces of the spacecrafts; lowering the surface temperature of the quartz crystal by the liquid nitrogen refrigeration system to ensure the quartz crystal to work under the worst temperature on the spacecraft orbit; heating non-metal materials or ensuring an engine to ignite to ensure the non-metal materials or the engine to effuse or jet pollutants; carrying out online in-situ monitoring on the frequency and temperature of the quartz crystal microbalance and storing the frequency and temperature; and closing a test system. The method is high in sensitivity (1.10*10<-9>-4.42*10<-9>), stable and reliable in test process, good in repeatability and suitable for large-scale test.
Owner:NO 510 INST THE FIFTH RES INST OFCHINA AEROSPAE SCI & TECH
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