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46results about How to "Comprehensive testing methods" patented technology
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Automatic CAN (Controller Area Network) interface function test system and test analysis method
ActiveCN102890503ALow skill level requiredComprehensive testing methodsElectric testing/monitoringComputer hardwareArea network
The invention discloses an automatic controller CAN (Controller Area Network) interface function test system and a test analysis method. The test system comprises a calibration unit, a CAN receiving and transmitting unit, a calibration control unit, a CAN receiving and transmitting control unit, a main test control unit and a main test control interface. The automatic CAN interface function test system provided by the invention can rapidly accomplish automatic test on hundreds of controllers, and obtain final the results of the test by a single operator in one to two hours, and has low requirements on the technical level of the operator. In addition, the test system can change an interface unit according to changes of the hardware of the calibration unit and the CAN receiving and transmitting unit, so that the test on different devices can be realized. The test method of the test system is comprehensive. a CAN bus can be divided into different test sections to be tested, and the system response situation also can be tested at the same time.
Owner:深蓝汽车科技有限公司
Method for testing and evaluating sound absorbing and insulating performance of automotive acoustic package
InactiveCN108267321ACredible structureReal structureVehicle testingAnalysing solids using sonic/ultrasonic/infrasonic wavesEngineeringCommon noise
The invention provides a method for testing and evaluating sound absorbing and insulating performance of an automotive acoustic package. The sound absorbing and insulating performance of the automotive acoustic package is evaluated through a tested P / Q value, thereby realizing a result with higher reliability and realness, reducing a testing evaluation result error caused by an effect of number ofmicrophones or other conditions, realizing high reliability and high comprehensiveness of the result, and integrally reflecting the NVHN performance of the whole automobile. Furthermore the method isthe comprehensive, direct, quick and effective testing method which comprises common noise sources of the automobile. The method according to the invention realizes a simple testing method and has high versatility. Furthermore the method can be adapted with evaluation for noise absorbing and isolating performance of various automotive acoustic packages, and furthermore realizes low test cost.
Owner:BRILLIANCE AUTO
Aero-engine rotor-stator rubbing position identification method based on application of cepstrum
The invention discloses an aero-engine rotor-stator rubbing position identification method based on the application of cepstrum and belongs to the technical field of aero-engine fault diagnosis. According to the method, first, aeroengine case vibration acceleration signals of different rubbing positions of an aero-engine are obtained; next, by means of the cepstrum analytical method, Low-dimensional feature parameters are extracted, and training samples are formed; then, training is carried out on a training sample set by means of sorting algorithms, and a rubbing position sorter is obtained; last, rubbing positions are identified with the trained sorter. Only with an acceleration sensor, can rubbing positions of the aero-engine be effectively identified. Compared with the prior art, the method is simple and suitable for real-time diagnosis in the field.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Preparation method of low-residual-stress copper film
InactiveCN102851645AImprove membrane qualityImprove performanceVacuum evaporation coatingSputtering coatingRadio frequency magnetron sputteringRadio frequency sputtering
The invention relates to preparation technology of a metal film, and discloses a new simple and convenient preparation method of a copper film. The invention effectively controls the magnitude of residual stress generated in the preparation process, thereby implementing preparation of the low-residual-stress copper film material. The method is applied to a magnetron sputtering coating device, and adopts radio-frequency magnetron sputtering to prepare the copper film. The magnetron sputtering coating device is provided with a magnetron sputtering chamber, and a magnetron sputtering target is arranged in the magnetron sputtering chamber. The method comprises the following steps: a. pretreating a substrate; b. putting the pretreated substrate in the magnetron sputtering chamber; c. vacuumizing the magnetron sputtering chamber; d. introducing high-purity argon into the magnetron sputtering chamber; e. regulating the radio-frequency sputtering power and gas pressure, and sputtering the magnetron sputtering target to form the copper film on the substrate; and f. after cooling the magnetron sputtering chamber, taking out the copper film sample, and carrying out residual stress testing.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Wearable massage manipulation tester
InactiveCN106037648AComprehensive testing methodsEnhanced usabilityDiagnostic recording/measuringSensorsMeasurement deviceMassage
The invention relates to a wearable massage manipulation measuring instrument, which belongs to the technical field of traditional Chinese medicine. The massage manipulation measuring instrument includes an A / D converter, a data processing module, a CPU control chip, a data storage module, a display module, a voice prompt device, and two mirror-imaged glove bodies. On the back, there are a plurality of mechanical sensors on the palm surface and the back of the hand respectively; due to the light and dexterous design of the force measuring device of the measuring instrument of the present invention, the operator's hands are liberated from the original fixed force measuring platform, It enables operators to perform manipulation operations on different objects, which increases its practicability. It is also possible to perform manipulation measurements on experimental animals, thereby providing a quantitative basis for manipulations in animal experiments in the field of massage.
Owner:YUNNAN UNIV OF TRADITIONAL CHINESE MEDICINE
Testing system and method of high-voltage processing plate of thyristor
InactiveCN102096037AComprehensive functional testingImprove stabilityCurrent/voltage measurementElectronic circuit testingFunctional testingReliability engineering
The invention relates to a testing system and method of a high-voltage processing plate of a thyristor, which is used for solving the problem that an integral function test can not be carried out on each unit of a TE (Tangent Elevation) plate on the spot. The testing system provided by the invention can detect each functional module of the TE plate and judges whether each function of the TE plateis correct or not. The testing method provided by the invention comprises a power supply test, a gate pole triggering test, a negative rechecking signal test, a low-voltage triggering test and a high-voltage triggering (BOD (Biochemical Oxygen Demand) protection triggering) test of the TE plate. The invention provides a convenient, reliable and comprehensive testing method and enhances the operating stability of the TE plate after installation, thereby enhancing the operating reliability of the whole system.
Owner:XJ ELECTRIC +1
Device and method for testing strength of precast concrete component
ActiveCN113267410ARealize the function of anti-drop strength testSimple structureMaterial strength using tensile/compressive forcesArchitectural engineeringCompressive strength
The invention relates to the technical field of quality detection of precast concrete components, in particular to a device and a method for testing the strength of a precast concrete component. The device comprises a base platform, two lifting devices arranged on the base platform in a mirror symmetry mode, two inward extending mechanisms which are horizontally arranged in a mirror symmetry mode and assembled at the lifting ends of the two lifting devices in a one-to-one correspondence mode, and a compression resistance testing mechanism assembled between the two inward extending mechanisms. According to the invention, a function of testing the anti-falling strength of the prefabricated pipe can be realized, a function of testing the compressive strength can also be realized, the overall structure is simple, the testing operation is convenient, the testing mode is more comprehensive, more comprehensive strength testing data can be obtained, and the testing purpose can be achieved; and whether the prefabricated pipe reaches the corresponding design strength or not can be detected according to test data.
Owner:徐州鼎博混凝土制品有限公司
Testing method for power distribution terminal remote control functional software module
ActiveCN103544104AComprehensive testing methodsImprove test efficiencySoftware testing/debuggingTest powerComputer hardware
The invention discloses a testing method for a power distribution terminal remote control functional software module. The method includes: communication connections of power distribution terminal automatic testing system software with a to-be-tested power distribution terminal and a relay protection testing instrument are built respectively; the system software sets remote control parameters of the to-be-tested power distribution terminal through the communication connection; the system software transmits a remote control instruction, and the to-be-tested power distribution terminal responds to the remote control terminal and upload a feedback signal to the system software through the communication connection and the relay protection testing instrument; the system software compares the feedback signal with the remote control parameters received by the to-be-tested power distribution terminal to determine whether the two are consistent or not.
Owner:ZHUHAI XJ ELECTRIC +1
Long core holder realizing multi-pairwise-point radial measurement
InactiveCN107991345AComprehensive testing methodsIt is convenient to realize the distribution lawMaterial resistanceResidual oilEngineering
The invention discloses a long core holder realizing multi-pairwise-point radial measurement. The long core holder comprises a holder barrel, a rubber sleeve, a core chamber bracket, a plug system, ameasuring system and a confining pressure pump, wherein an annular confining pressure cavity is formed between the holder barrel and the rubber sleeve and is wrapped by the rubber sleeve to form a core chamber, and the core chamber bracket is arranged at the bottom of the core chamber; the plug system comprises an inlet end plug and an outlet end plug located at two ends of the holder; the measuring system comprises insulating sleeves, saturation probes and radial measuring points; small holes are oppositely formed in the surface of the holder barrel in a radial direction; the insulating sleeves are matched with the radial measuring points, the saturation probes are arranged in the insulating sleeves and are connected with a long core after passing through the rubber sleeve, and the confining pressure pump is communicated with the confining pressure cavity through the pipe via an annular pressure hole in the holder barrel. The holder simulates formation conditions of oil and gas reservoirs, and can realize real-time measurement of multi-point radial resistivity, and the distribution position and law of residual oil in the core can be defined by detecting the resistivity change curve with an itinerant detector and a resistivity tester.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY
Hydro-static pressure experiment teaching device and measuring method
PendingCN108922341AComprehensive testing methodsVersatileEducational modelsWeight gainingPositive pressure
The invention discloses a hydro-static pressure experiment teaching device and a measuring method. The device comprises a bottom bracket and a device fixing plate, wherein an organic glass web is arranged in the device fixing plate, and airtight water tanks in symmetric distribution, movable water tanks and a pressure measuring pipe fixing system which are connected with each other are mounted onthe organic glass web; the movable water tanks are mounted on upper and lower sliding rails on the device fixing plate in a sliding manner, and a water inlet, an air vent valve and a water drain outlet valve are arranged on each closed water tank; by adjusting the movable water tanks to slide along the upper and lower sliding rails, the positive pressure or negative pressure condition between thesurface pressure P0 of the liquid of the closed water tanks and the atmospheric pressure Pa is realized; by observing the pressure measuring pipe fixing system, two methods are adopted for verifying the hydrostatics basic equation and measuring the pressure or vacuum value of any point in static water; and through the pressure measuring pipe fixing system, the weight gain or density of unknown liquid is measured, and thus the type of the unknown liquid is judged. The experiment device is diversified in function, diversified in testing method, and low in cost, and has a certain promotion value.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Method for real-time monitoring of remote equipment
ActiveCN102830671ATroubleshooting quicklyComprehensive testing methodsTotal factory controlProgramme total factory controlSelf-diagnosisDiagnostic data
Owner:SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
Path-based method and system for verifying software implementation and design uniformity
InactiveCN104317711AAccurately Obtain Functional StructureComprehensive testing methodsSoftware testing/debuggingSoftware design descriptionSoftware system
The invention relates to a path-based method and system for verifying software implementation and design uniformity. The method includes: generating a design function calling relation diagram according to a software design instruction, generating a design function calling path according to the design function calling relation diagram, establishing a design function cluster model of a software system under testing according to the design function calling path, generating an actual function calling relation graph on basis of a source code, generating an actual function calling path according to the actual function calling relation graph, extracting functions from the source code on basis of function features, refilling the actual function calling path, establishing an actual function cluster model of the software system under testing according to the actual function calling path, comparing the design function cluster model with the actual function cluster model, and verifying whether or not the functions of the software system under testing meet the demands in the software design instruction.
Owner:牟永敏 +1
User experience test method based on software product life cycle
InactiveCN107038114AQuality improvementMeet the use requirementsSoftware testing/debuggingSoftware development processSoftware design
The invention discloses a user experience testing method based on the life cycle of a software product, which belongs to the technical field of software design and is a collection of a series of user experience testing methods combined with the software development stage in combination with the user experience testing of the software product life cycle. Including five methods that can be used for user experience testing of software products, namely expert evaluation method in the product design stage, usability test in the prototype development stage, usability test in the operable stage, national CE in the trial operation stage, and quantitative testing after launch There are supporting introductions and operating procedures for each method, so that user experience testing of software products can be conducted comprehensively, scientifically and systematically. The present invention increases the depth and breadth of testing from different perspectives through qualitative, quantitative and other multi-dimensional testing methods, increases the probability of discovering various user experience problems, and further ensures the user experience of products.
Owner:INSPUR QILU SOFTWARE IND
Mobile automated photovoltaic detection platform
InactiveCN107508547AGuaranteed uptimeImplement automated testingPhotovoltaic monitoringPhotovoltaic energy generationTest efficiencyTemperature control
The invention discloses a mobile automated photovoltaic detection platform. The platform comprises a main control system, a constant temperature control system, a test system, an air purification system and a photovoltaic assembly loading and unloading device which are all arranged in the compartment of a mobile truck in an integrated manner; the main control system is provided with a main console and a power distribution cabinet, wherein the power distribution cabinet is used for supplying power to the constant temperature control system, the test system and the photovoltaic assembly loading and unloading device, and the main console is used for controlling the constant temperature control system, the test system and the photovoltaic assembly loading and unloading device; the constant temperature control system is used for adjusting the temperature of a test environment; the test system is used for performing performance tests on photovoltaic assemblies; and the photovoltaic assembly loading and unloading device is used for transferring the photovoltaic assemblies into or out from the detection platform. With the detection platform adopted, large-batch, diversified and systematic tests can be performed at the site of a power station, the accuracy of test results is increased, and test efficiency can be improved.
Owner:QINGHAI HUANGHE HYDROPOWER DEV
Attack testing method and system of precision time synchronization protocol (PTP) clock
InactiveCN104852827AComprehensive testing methodsReduce the risk of attackData switching networksReal-time computingTime synchronization
The present invention discloses an attack testing system of a precision time synchronization protocol (PTP) clock. The system comprises a PTP main clock connected with an interval timer and a PTP network switch; a bagging tester connected with the PTP network switch, the PTP network switch also being connected with a network damage device; the network damage device also connected with an under-test PTP slave clock; and the under-test PTP slave clock also connected with the interval timer, wherein the interval timer is used for receiving and calculating a difference value between pulses per second sent by the PTP main clock and pulses per second sent by the under-test PTP slave clock, and determining the anti-attack capability of the under-test PTP slave clock according to the difference value. Another attack testing system of a PTP clock and an attack testing method of the PTP clock are also provided. With adoption of the system and the method provided by the present invention, the anti-attack capability of the PTP clock can be tested and judged, the PTP clocks can be improved by researchers according to test results, and under attack risks are reduced.
Owner:STATE GRID ELECTRIC POWER RES INST +1
Thermal efficiency correcting method adopted when gas-fired condensing boiler water inlet temperature deviates from designed value
ActiveCN110657585AComprehensive testing methodsReduce measurement uncertaintyFluid heatersProcess engineeringEnvironmental geology
The invention provides a thermal efficiency correcting method adopted when gas-fired condensing boiler water inlet temperature deviates from a designed value. Firstly, measured boiler thermal efficiencies of a boiler testing system are obtained, boiler thermal efficiency ratios are calculated, measured condenser thermal efficiencies are obtained, and the condenser thermal efficiency ratios are calculated; under the condition of multiple grades of condensers, each grade of condensers undergo testing and calculation according to the above steps, and condenser thermal efficiency ratios are obtained; the boiler measured thermal efficiency correction value of the boiler at one water feed temperature under one load condition is calculated as the formula shown in the specifications. The thermal efficiency correcting method adopted when gas-fired condensing boiler water inlet temperature deviates from the designed value solves the problem that correction conducted when the condensing boiler water inlet temperature deviates from the designed value generates influence on a type approval performance test of a new condensing boiler product, and the difference between the thermal efficiency ofthe condensing boiler product and the designed thermal efficiency can be accurately reflected.
Owner:CHINA SPECIAL EQUIP INSPECTION & RES INST
Test device and method for cooker ignition control board
PendingCN107728607AEasy to testHighlight substantive featuresProgramme controlElectric testing/monitoringGas pipelineCooker
The invention discloses a test device and method for a cooker ignition control board. A control module controls a controlled simulated flame combustion feedback signal generation module to output simulated flame combustion feedback signals to a flame detection feedback connection end of the cooker ignition control board to be tested; then, an ignition needle state detection module is adopted to detect whether or not the cooker ignition control board to be tested can control an ignition needle to stop ignition after gas ignition is successful; after the controlled simulated flame combustion feedback signal generation module is controlled to stop outputting the simulated flame combustion feedback signals to the flame detection feedback connection end of the cooker ignition control board to be tested, a gas solenoid valve state detection module is adopted to detect whether or not the cooker ignition control board to be tested can control a gas solenoid valve to fall off and be switched off after gas flame is extinguished, so that the cooker ignition control board to be tested is safely detected, a test process in which the gas solenoid valve needs to be communicated with a gas pipeline to achieve the flame combustion and flame extinguishing is not involved during a test, and the test is more convenient.
Owner:中山华帝电子科技有限公司
Method for testing surface tension and wettability parameters of high-temperature liquid asphalt
ActiveCN111366501ASimple stepsSimple methodClimate change adaptationSurface tension analysisAlcoholCapillary Tubing
The invention discloses a method for testing surface tension and wettability parameters of high-temperature liquid asphalt, which comprises the steps of firstly, reversely calculating the inner radiusof a capillary tube by taking absolute ethyl alcohol as calibration liquid; secondly, obtaining a surface tension calculation value of the asphalt through a differential capillary tube method; and finally, fitting the arithmetic square root of the inner radius product with the natural logarithm value of the surface tension calculation value by using a linear function, and respectively representing the surface tension and wettability of the asphalt by using fitting parameters [gamma]0 and [beta]. According to the method, the differential capillary tube method is perfected, the surface tensiontest precision is improved by about 26%-54%, the wettability of the high-temperature liquid asphalt can be evaluated, and the method has certain theoretical significance and practical value.
Owner:SHANGHAI MARITIME UNIVERSITY +1
A device and method for testing the strength of prefabricated concrete components
ActiveCN113267410BRealize the function of anti-drop strength testSimple structureMaterial strength using tensile/compressive forcesArchitectural engineeringMirror image
The invention relates to the technical field of quality detection of concrete prefabricated components, in particular to a strength testing device and a testing method for concrete prefabricated components, comprising a base platform, two lifting devices arranged symmetrically in mirror images on the base platform, and two horizontal mirror images. One-to-one corresponds to the inward extension mechanism assembled at the lifting end of the two lifting devices and the compression test mechanism assembled between the two inward extension mechanisms; Realize the function of compressive strength test, the overall structure is simple, the test operation is convenient, the test method is more comprehensive, can obtain more comprehensive strength test data, can achieve the purpose of the test, and can detect whether the prefabricated pipe has reached the corresponding level according to the test data Design strength.
Owner:徐州鼎博混凝土制品有限公司
Super-frame testing method for wireless network for industrial automation-process automation
ActiveCN106921530AImprove efficiencyHigh precisionError prevention/detection by using return channelTime-division multiplexWireless mesh networkEquipment under test
The invention relates to a wireless network technology oriented to industrial application, in particular to a super-frame testing method for wireless network for industrial automation-process automation. The method is mainly used for testing whether a super-frame is configured correctly for equipment under test (routing equipment or field equipment) or not, and performing data forwarding according to correct super-frame information. In the method, the interference of factors such as environmental interference and clock shift on testing are considered fully, the time offset of the super-frame is estimated by a least square method, and the super-frame configuration of the equipment under test and an error of the super-frame are tested on the premise of not changing the function of the equipment under test and a communication mode, thereby achieving the effects of high efficiency, high accuracy and easiness in implementation.
Owner:SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
Testing system and method of high-voltage processing plate of thyristor
InactiveCN102096037BComprehensive functional testingImprove stabilityCurrent/voltage measurementElectronic circuit testingFunctional testingReliability engineering
The invention relates to a testing system and method of a high-voltage processing plate of a thyristor, which is used for solving the problem that an integral function test can not be carried out on each unit of a TE (Tangent Elevation) plate on the spot. The testing system provided by the invention can detect each functional module of the TE plate and judges whether each function of the TE plate is correct or not. The testing method provided by the invention comprises a power supply test, a gate pole triggering test, a negative rechecking signal test, a low-voltage triggering test and a high-voltage triggering (BOD (Biochemical Oxygen Demand) protection triggering) test of the TE plate. The invention provides a convenient, reliable and comprehensive testing method and enhances the operating stability of the TE plate after installation, thereby enhancing the operating reliability of the whole system.
Owner:XJ ELECTRIC +1
GMRP protocol performance test system and method in intelligent substation
ActiveCN105812206AComprehensive testing methodsImprove product qualityData switching networksReal-time computingTransformer
The invention discloses a GMRP protocol performance test system in an intelligent substation. The system comprises a relay protection tester, an overcurrent instantaneous trip protection device, a bus / master transformer protection device, a first tested GMRP switch, a second tested GMRP switch and a data throughput tester. Moreover, the invention discloses a test method of the system. According to the method and the system, practical application is simulated in a true network; the test method is comprehensive and accurate; the function and performance of the GMRP network switches in the intelligent substation can be quantitatively checked; therefore, the switches are completed; the product quality is improved; and an effective detection method and a tool are provided for a special detection mechanism or a device manufacturer.
Owner:STATE GRID ELECTRIC POWER RES INST +1
Method and device for testing data packet buffer capacity of switch
ActiveCN102970182BComprehensive testing methodsData switching networksTraffic capacityCapacity value
The invention discloses a method and device for testing the capacity of a data packet buffer of a switch. The method comprises the steps that both a first port and a second port transmit data packets to a third port by configuring a transmission relation of the switch, the first port transmits the data packet capable of filling the whole band width firstly, and the second port sends burst flow secondly; at this time, the data packet of the burst flow is sent to the data packet buffer, the first port is stopped from sending the data packet, and the data packets in the data packet buffer are transmitted through the third port; and the capacity value of the data packet buffer is calculated out by calculating sent quantity of the first port and accepted quantity of the third port. By means of the method, the capacity value of the data packet buffer of the three-layer switch can be accurately tested, and accordingly, the sizes of the data packet buffers of Ethernet three-layer switches of different manufactures can be obtained through testing.
Owner:SUZHOU CENTEC COMM CO LTD
Method for realizing digital home network control technology
ActiveCN102263682BVerify correctnessComprehensive testing methodsData switching by path configurationWireless sensor networkingNetwork control
The invention discloses a method for realizing a digital home network control technology. The method comprises the following steps: firstly, establishing a wireless sensor network experimental platform with equipment control capacity; then designing a priority classification optimization method according to the requirement of service classification; then designing a mobility support method based on state estimation aiming at the requirement on mobility; and finally, verifying the correctness of the optimized MAC (medium access control) protocol on a test bed. The invention provides a comprehensive and scientific test method for the digital home network test; and by using the test platform, the verification on the accuracy of the newly developed MAC optimization protocol can be well finished. The consistency and widespread adaptability of the platform provide a good practice platform for theoretical research.
Owner:SUN YAT SEN UNIV
Test platform and test method for wind generating set control cabinet
PendingCN112924796AAvoid burningComprehensive testing methodsElectrical testingWeather vaneLimit switch
The invention discloses a test platform and a test method for a wind generating set control cabinet, and the platform comprises a power supply module which is used for supplying power to the tested wind generating set control cabinet and the test platform thereof; a PLC, communicated with the power supply module, the to-be-tested wind generating set control cabinet and the simulation test module, and used for communicating with the to-be-tested wind generating set control cabinet and performing online control; a simulation test module, used for simulating a wind field environment and comprising a yaw motor, an anemograph, a wind indicator, a rotary limit switch, a vibration sensor, a temperature sensor and a 4-20mA signal generator, and the wind field environment being simulated by rotating the anemograph, the wind indicator and the rotary limit switch and shaking the vibration sensor to test the control cabinet of the wind generating set; and a door plate indicating lamp and button module, communicated with the PLC so as to display the operation mode of the test platform and realize button control. According to the invention, a wind field operation state is simulated in a wind generating set control cabinet factory for testing.
Owner:国能联合动力技术(保定)有限公司
A test method for remote control function software module of power distribution terminal
ActiveCN103544104BComprehensive testing methodsImprove test efficiencySoftware testing/debuggingTest powerRemote control
The invention discloses a testing method for a power distribution terminal remote control functional software module. The method includes: communication connections of power distribution terminal automatic testing system software with a to-be-tested power distribution terminal and a relay protection testing instrument are built respectively; the system software sets remote control parameters of the to-be-tested power distribution terminal through the communication connection; the system software transmits a remote control instruction, and the to-be-tested power distribution terminal responds to the remote control terminal and upload a feedback signal to the system software through the communication connection and the relay protection testing instrument; the system software compares the feedback signal with the remote control parameters received by the to-be-tested power distribution terminal to determine whether the two are consistent or not.
Owner:ZHUHAI XJ ELECTRIC +1
Method for testing signal transmitting and receiving performance of DSP (digital signal processor)
InactiveCN102957486BImprove reliabilityImprove convenienceTransmitters monitoringReceivers monitoringDigital signal processingState of art
The invention discloses a method for testing signal transmitting and receiving performance of a DSP (digital signal processor). The method includes a process of testing signal transmitting performance of the DSP and a process or testing signal receiving performance of the DSP. The method has the advantages of higher reliability, convenience and low cost as compared with the prior art, and particularly has the advantages that reliability of signal transmitting and receiving performance of the DSP is guaranteed by the comprehensive testing method; testing can be carried out anytime and anywhere due to the fact that devices for testing are simple and convenient; cost is low; and when applied to a telephone switchboard system, the method can provide effective tracks for solving the problem of calling fault and facilitates quick positioning and problem solving.
Owner:BEIJING JIAXUN FEIHONG ELECTRIC CO LTD
Helicopter rotor shaft bearing set testing machine
ActiveCN113155456BSimple way to change test parametersComprehensive testing methodsMachine bearings testingMarine engineeringStructural engineering
Owner:C&U CO LTD +3
A thermal efficiency correction method for gas-fired condensing boiler inlet water temperature deviating from design value
ActiveCN110657585BComprehensive testing methodsReduce measurement uncertaintyFluid heatersProcess engineeringThermal efficiency
The present invention proposes a thermal efficiency correction method in which the inlet water temperature of a gas-fired condensing boiler deviates from the design value. Firstly, the measured thermal efficiency of the boiler in the boiler test system is obtained, and the thermal efficiency ratio of the boiler is calculated to obtain the measured thermal efficiency of the condenser, and the thermal efficiency ratio of the condenser is calculated in the case of a multi-stage condenser. Next, each stage of condenser is tested and calculated according to the above steps respectively to obtain the thermal efficiency ratio of the condenser. Under a certain feedwater temperature and a certain load condition of the boiler, the boiler measured thermal efficiency correction method of the boiler test system is calculated according to the following formula: the invention solves How to correct the feedwater temperature of the condensing boiler when it deviates from the design value has an impact on the energy efficiency test of the new condensing boiler product, and proposes a thermal efficiency correction method for the gas condensing boiler inlet water temperature that deviates from the design value, which can accurately reflect the thermal efficiency of the condensing boiler product The difference from the design thermal efficiency.
Owner:CHINA SPECIAL EQUIP INSPECTION & RES INST
Method for testing signal transmitting and receiving performance of DSP (digital signal processor)
InactiveCN102957486AGuaranteed reliabilityComprehensive testing methodsTransmitters monitoringReceivers monitoringDigital signal processingState of art
The invention discloses a method for testing signal transmitting and receiving performance of a DSP (digital signal processor). The method includes a process of testing signal transmitting performance of the DSP and a process or testing signal receiving performance of the DSP. The method has the advantages of higher reliability, convenience and low cost as compared with the prior art, and particularly has the advantages that reliability of signal transmitting and receiving performance of the DSP is guaranteed by the comprehensive testing method; testing can be carried out anytime and anywhere due to the fact that devices for testing are simple and convenient; cost is low; and when applied to a telephone switchboard system, the method can provide effective tracks for solving the problem of calling fault and facilitates quick positioning and problem solving.
Owner:BEIJING JIAXUN FEIHONG ELECTRIC CO LTD
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