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87results about How to "The test result is valid" patented technology
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Electromagnetic tracking method based on inductance coil
InactiveCN102183251AAvoid detectionTest results are stableNavigation instrumentsInductanceElectromagnetic tracking
The invention relates to an electromagnetic tracking method based on an inductance coil. The inductance coil detects the magnitude of a magnetic field around a current carrying wire, so as to determine a position relationship between a moving object and the current carrying wire. Through the research on the number and the arrangement of the inductance coils, an electromagnetic-guidance-based tacking method consisting of seven inductance sensors is designed, so the detection of a magnetic signal under different wire arrangements and complicated magnetic field environment is well realized so as to determine the position. A detection result is more stable, reliable and effective, and the device has the characteristics of simpleness, reliability and wide application fields.
Owner:SHANGHAI UNIVERSITY OF ELECTRIC POWER
Epileptic seizure monitoring method and system based on depth data
ActiveCN105760861AQuick checkEffective monitoringCharacter and pattern recognitionDiagnostic recording/measuringData acquisitionData source
The invention discloses an epileptic seizure monitoring method and system based on depth data. The method comprises steps of: acquiring a data source of an epileptic by using a depth sensor; determining whether the epileptic is likely to have as epileptic seizure by analysis of a resultant accelerated speed threshold value of joints; tracking the loci of the joints by using an optical flow method, computing sampling point speed to achieve feature extraction, acquiring a feature capable of describing the drastic vibration of the arms and the legs of the epileptic when the epileptic has an epileptic seizure; identifying whether the current epileptic has an epileptic seizure by using a support vector machine classification method, and if yes, enabling a loudspeaker to give alarm sound, enabling an LED to twinkle, and automatically sending a short message or email via GSM and 4G mobile communication to notify family members. The system comprises a depth data acquisition module, a preanalysis module, an identification module, a data storage module, and an alarm module. The method and the system may accurately and timely monitor the vibration of the arms and the legs of the epileptic having an epileptic seizure, and are insusceptible to environmental changes such as light or the like, fast in detection speed, and good in robustness.
Owner:EAST CHINA NORMAL UNIV
Method and system of road test
InactiveCN102547579AIn line with the actual network qualityThe test result is validTransmission monitoringWireless commuication servicesNetwork conditionsComputer terminal
The invention discloses a method and a system of road test, which aim to test network conditions for neighborhoods with different signal coverage rates and signal interference rates by adopting different testing frequencies, so that the effectiveness and the accuracy for testing the network conditions of the neighborhoods are increased. The method of the road test comprises the steps that: a current neighborhood of a road test vehicle can be located by a navigation device arranged on the road test vehicle, and the corresponding signal coverage rate and the corresponding signal interference rate of the current neighborhood can be searched from an obtained electronic map which is marked with the signal coverage rate and the signal interference rate of each neighborhood; and a test frequentness for testing the network condition of the current neighborhood can be determined according to a searched signal coverage rate and a searched signal interference rate by the navigation device, and a road test terminal arranged on the road test vehicle is instructed to test the current neighborhood through a determined test frequentness.
Owner:DATANG MOBILE COMM EQUIP CO LTD +1
Electronic equipment for detecting and correcting splayfeet
InactiveCN105476639AAchieve preventionEasy to detectDiagnostic recording/measuringSensorsPower flowWeak current
The invention discloses electronic equipment for detecting and correcting splayfeet. The electronic equipment detects whether outwards-splay or inwards-splay phenomena exist or not by calculating included angles of tiptoe and footstep advancing directions through an acceleration sensor arranged inside, and can remind a user of timely adjusting foot angles through weak current stimulation, so that three functions like prevention, detection and correction are fulfilled. When the included angles are calculated, a mode of averaging multiple sets of data is adopted to ensure effectiveness of detection results. The electronic equipment has the advantages of being small in size, lightweight, economically affordable, intelligent, practical and attractive; the appearance of the electronic equipment can be designed quite flexibly, and the electronic equipment can be made into an anklet or a shoe pad or even be embedded in a shoe.
Owner:南京中科创达软件科技有限公司
Synthetic aperture radar (SAR) target detection method based on improved visual attention model
InactiveCN102999909AIntegrity guaranteedClear outlineImage analysisImaging processingSynthetic aperture radar
The invention discloses a synthetic aperture radar (SAR) target detection method based on an improved visual attention model and belongs to the technical field of image processing. The SAR target detection method mainly solves the problem of failure of a traditional visual attention model in the aspect of SAR image processing. The SAR target detection method includes: under-sampling is performed on an SRA image to be detected, texture features and wavelet features are extracted from the sampled image, linear superposition is performed on the features, and normalization and significance processing is performed on the features to obtain an initial significant figure; visual receptive field template filtering is performed on the initial significant figure to obtain a final significant figure; at last the final significant figure adopts bilinear interpolation to be the same as the size of an original SAR image, and a light area in the interpolated significant figure is used as a target area. The SAR target detection method based on the improved visual attention model has the advantages of being rapid in calculating speed, remarkable in detection effect, accurate in positioning and capable of being used for early detection of an SAR image target.
Owner:XIDIAN UNIV
Database node health condition detection method and detection device
ActiveCN102982037AFast test resultsAvoid poor anomaly detection sensitivitySpecial data processing applicationsData miningData library
The invention discloses a database node health condition detection method and a detection device. The database node health condition detection method includes a first step of capturing an active session state of a database node in a lately first session-timeout within every sampling period for any oracle real application clusters (RAC) database node, a second step of computing the percentage of abnormal waiting sessions of the database node within the sampling period according to the active session state, a third step of judging whether the percentage of the abnormal waiting sessions is larger than a preset first threshold value, if so, a fourth step of judging whether the most serious waiting sessions exist in the database node within the sampling period, judging, if existing, a fifth step of judging the database node within the sampling node is an unhealthy node and continuing judging whether the database node within a plurality of continuous preset sampling periods is judged to be the unhealthy node, and if so, a sixth step of executing closing and stopping operation to the database node. The database node health condition detection method and the detection device achieve automatic real-time detection to the health conditions of the oracle RAC database nodes.
Owner:CHINA MOBILE GROUP ZHEJIANG
Further diagnosis method and device for root causes of failure of main fan set
ActiveCN104571084AImprove detection accuracyImprove detection efficiencyElectric testing/monitoringProtection layerValue set
The invention provides a further diagnosis method and a further diagnosis device for root causes of a failure of a main fan set. The method comprises the steps of constructing a fuzzy failure Petri net diagram according to a mutual relation among all failure libraries of a main fan set system; determining an initial credibility set of all the failure libraries, a failure event weight set of all the failure libraries, a failure rate set of all protection layer libraries, a threshold value set of all transition rules and a credibility set of the transition rules according to expert experience data and on-site actual statistical data; searching a transmission path of the failure library with the maximum credibility on each layer from the fuzzy failure Petri net diagram according to the information; taking the failure libraries at the start points of the determined transmission paths as the root causes of the failure in main fan set equipment. According to the further diagnosis method, the technical problem that the root causes of the failure in the main fan set equipment cannot be accurately and effectively detected in the prior art is solved, and the technical effect of effectively improving the detection accuracy and the detection efficiency is achieved.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Fatigue test device and method thereof
ActiveCN111942614AImplement federated loadingThe test result is validAircraft components testingAerodynamic loadFuselage
The invention belongs to the technical field of aircraft rear fuselage structure fatigue tests, and particularly relates to a fatigue test device, which comprises two vertical fin vibration load loading devices, wherein each vertical fin vibration load loading device is used for correspondingly connected with a vertical fin of the aircraft rear fuselage structure for applying a vibration load to the corresponding vertical fin two vertical tail gas dynamic load loading devices, each vertical tail gas dynamic load loading device being used for being correspondingly connected to one vertical finof the aircraft rear fuselage structure to apply aerodynamic load to the corresponding vertical fin; and an engine frame vibration load loading device which is used for being connected to an engine frame of an aircraft rear fuselage structure and applying a vibration load to the engine frame. Furthermore, the invention relates to a fatigue test method which is implemented on the basis of the fatigue test device, and a relatively more effective test result can be obtained when the fatigue test method is applied to the aircraft rear fuselage structure fatigue test.
Owner:CHINA AIRPLANT STRENGTH RES INST
Test device and test method for testing waterproof performance of pipe segment joint sealing gaskets
InactiveCN107817078ARelative position adjustableWaterproofMeasurement of fluid loss/gain rateExperimental methodsEngineering
The invention relates to the technical field of tunnel engineering, and particularly relates to a test device and a test method for testing the waterproof performance of pipe segment joint sealing gaskets. The test device of the invention includes a sleeve with openings at both ends, and sealing covers installed at the two ends of the sleeve. The sleeve includes a plurality of sleeve blocks, and the sleeve blocks are spliced into an overall sleeve structure. Sealing gaskets are installed on the sleeve blocks on the two sides of a joint, and sealing gaskets are also arranged in the positions ofthe sleeve where the sealing covers are installed. The test device can simulate the actual condition that there are various types of joints after pipe segment splicing in actual projects. The experimental data of the waterproof performance of sealing gaskets is consistent with reality. Reliable reference and data support are provided for the construction of actual projects. The construction quality and the waterproof safety are ensured.
Owner:SOUTHWEST PETROLEUM UNIV
Wireless router detecting device and method
InactiveCN105337877ASave human effortImprove efficiencyTransmitters monitoringReceivers monitoringNetwork performanceVoltage
The invention discloses a wireless router detecting device and method. The method comprises the steps of setting the parameter adjusting frequency of a stabilized voltage supply of a wireless router, acquiring the parameters of the stabilized voltage supply, setting the antenna torsion frequency of the wireless router, acquiring the antenna torsion angle parameters of the wireless router, executing torsion of an antenna of the wireless router, judging whether the antenna of the wireless router is damaged, detecting the wired performance and wireless performance of the wireless router, judging whether the antenna torsion frequency of the wireless router reaches a preset value, judging whether the parameter adjusting frequency of the stabilized voltage supply of the wireless router reaches a preset value, and outputting a wireless router detection result. The antenna mechanism, network performance and power supply stability of the wireless router are tested at the same time, and detection results are more accurate and effective.
Owner:PHICOMM (SHANGHAI) CO LTD
Intelligent on-line checking method for transformer oil surface thermometer
InactiveCN107179146ARealize online calibrationImprove maintenance coordination efficiencyThermometer testing/calibrationControl signalPower grid
The invention discloses an intelligent on-line checking method for a transformer oil surface thermometer. The method comprises the steps that: (1) a control module generates a control signal such that the oil surface thermometer and a calibration sensor start to collect oil temperature data in an oil storage tank, and a temperature sensor of the oil surface thermometer and the calibration sensor have a same data collection interval, (2) the oil surface thermometer obtains a group of actual measurement data, a calibration oil surface thermometer obtains a group of calibration measurement data and transmits the measurement data to the control module, (3) the control module uploads the actual measurement data and the calibration measurement data to a data cloud platform through a communication module, and (4) the data cloud platform calculates and obtains an oil surface thermometer measurement error. The invention provides an online detection method for transformer oil temperature detection, the accuracy calibration of the transformer oil surface thermometer can be realized under the condition of no power cut, and the method has an important meaning for the safe and stable operation of a power grid.
Owner:STATE GRID FUJIAN ELECTRIC POWER CO LTD +2
Electric bicycle performance test platform
ActiveCN106053096AReliable test resultsWith friction resistance compensation functionVehicle testingElectric vehicleWheel drive
The invention discloses an electric bicycle performance test platform comprising a rear wheel driving device and a vehicle seat compressing device. The wheel driving device comprises a first rear axle roller and a second rear axle roller. The first rear axle roller and the second rear axle roller are fixed in a mutually parallel way through bearing pedestals. The first rear axle roller is connected with a first motor. The second rear axle roller is connected with a second motor. The rear wheel of a tested vehicle body is arranged in the two rear axle rollers of the rear wheel driving device. The vehicle seat compressing device is used for loading compressing force for the tested vehicle body so as to simulate vehicle-mounted weight. The second motor and the second rear axle roller load positive torque to the rear wheel of the vehicle body to apply push force and the vehicle wheel is enabled to be in the critical operation state so as to compensate frictional force of the test platform and frictional resistance between the vehicle wheel of the electric vehicle and the rollers of the test platform. The first motor and the first rear axle roller load opposite torque to the rear wheel to apply resistance so as to quantitatively simulate the resistance in driving of the electric vehicle.
Owner:天津铭志成科技有限责任公司
Detecting device and detecting method for evenness of fuel cell bipolar plate
InactiveCN102494597ALow costThe test result is accurateMechanical roughness/irregularity measurementsFuel cellsPulp and paper industry
A detecting device and a detecting method for evenness of a fuel cell bipolar plate are provided. The detecting device comprises a control platform, a press and a tested assembly comprising an upper end plate, a lower end plate, a tested bipolar plate and a membrane electrode polar assembly (MEA). The detecting device is characterized by further comprising a carbon paper false electrode formed by clamping white stick paper through carbon paper. The white stick paper and the positions of the four corners of the MEA are all provided with carbon paper false electrode location holes corresponding to location holes arranged on the tested bipolar plate. The detecting method is that the upper end plate and the lower end plate clamp the tested bipolar plate, the MEA and the carbon paper false electrode and are arranged between an upper mold and a lower mold of the press, and pressurizing and pressure maintaining are performed on the tested assembly according to practical assembly force of galvanic pile. The white stick paper is taken out after pressure is removed, a user can observe prints on the white stick paper and determine the evenness of the bipolar plate according to the length and definition of the prints. The detecting device and detecting method for the evenness of the fuel cell bipolar plate can truly reflect the evenness of the bipolar plate under the practical assembly force of the galvanic pile so that the test result is true and effective.
Owner:SUNRISE POWER CO LTD
Server interface concurrent testing method and apparatus
InactiveCN105279061AImprove test efficiencySuccessful test resultsFunctional testingData switching networksTest efficiencyConcurrent testing
The present invention discloses a server interface concurrent testing method. The method comprises the following steps: receiving bulk-imported interface data and preset result data of a plurality of simulation users, and submitting the interface data to a server; and receiving return data of the server, comparing the return data with the preset result data, and obtaining a testing result according to a comparison result. The present invention further discloses a server interface concurrent testing apparatus. According to the server interface concurrent testing method provided by the present invention, input time of the interface data and the preset result data can be reduced, and input efficiency of the interface data and the preset result data can be improved, so that testing efficiency of server interface concurrent testing can be improved.
Owner:XIAN TCL SOFTWARE DEV
Image saliency object detection method based on central dark channel priori information
ActiveCN107292318AThe test result is validAccurate detectionImage enhancementImage analysisObject detection
The invention discloses an image saliency object detection method based on central dark channel priori information. The image saliency object detection method comprises the steps of: performing positioning detection on a saliency region of an image, so as to obtain an initial detection result of a saliency object in the image; and utilizing the central dark channel priori information provided by the invention to optimize a final result of saliency detection. The image saliency object detection method can detect the saliency object more precisely and more robustly. The image saliency object detection method utilizes the central dark channel priori information for conducting saliency detection, can improve the precision of saliency object detection, further enhances the robustness of saliency detection, can solve the problems that the existing saliency detection is not high in precision and has insufficient robustness, so that the saliency region in the image can be displayed more precisely, provides precise and useful information for later application such as target identification and classification, is suitable for more complex scenes, and has wider application range.
Owner:PEKING UNIV SHENZHEN GRADUATE SCHOOL
House vectorization method for multi-element remote sensing data
ActiveCN106096497ASmall amount of calculationFast test resultsCharacter and pattern recognitionSensing dataSequence processing
The invention discloses a house vectorization method for multi-element remote sensing data. The house vectorization method comprises the following steps of acquiring information which can represent house position and shape and is needed to be processed; obtaining an ordered edge point by eight neighborhood edge tracing, and simultaneously generating a binary image of a house edge, wherein the edge point is 1, and a non-edge point is 0; obtaining two main directions orthogonal to each other of a house by Radon conversion combined with main shaft analysis; partitioning an edge line of the house to three types of edge line segment, namely, a first main direction type, a second main direction type and a non-directional type; accurately positioning edge line segments of the first main direction type and the second main direction type; calculating a corner edge of adjacent edge line segments; and generating a vectorization house boundary line. By the house vectorization method, the troubles of initial point selection and sequence processing and unfavorable influence during the regularization process of the house can be prevented, the influence of a house extraction result error can also be reduced, and house profile information which is relatively consistent with the shape of the house and is effective and regulated can be acquired.
Owner:安徽省(水利部淮河水利委员会)水利科学研究院(安徽省水利工程质量检测中心站)
CAN bus controller parallel test method
ActiveCN111538319AThe test result is validAvoid debuggingElectric testing/monitoringTotal factory controlRadio networksArea network
The invention relates to a CAN (Controller Area Network) bus controller parallel test method, which belongs to the technical field of electronic component detection, and solves the problems that an existing CAN bus controller test cannot realize real working state consideration, debugging and writing test of a PATTERN (Public Advanced Telecommunication Terrestrial Radio Network) is tedious and difficult. The method comprises the steps of acquiring a current test mode; if the test mode belongs to the CAN bus system test mode, connecting a first channel, and using a test machine for testing theCAN bus controller in a corresponding working mode; and if the test mode belongs to the test mode of the single-chip CAN bus controller, connecting a second channel, and testing the CAN bus controllerin a corresponding working mode by using a test machine. The CAN bus system test mode comprises at least one test mode of a message transceiving test, a message filtering test and a bus arbitration test. The single-chip CAN bus controller test mode comprises at least one test mode of a sending error test, a receiving error test and a node closing test.
Owner:BEIJING ZHENXING METROLOGY & TEST INST
Main shaft bearing impact test bench
ActiveCN111426475AHigh control precisionThe test result is accurateMachine bearings testingMaterial strength using tensile/compressive forcesClassical mechanicsElectric machinery
The invention provides a main shaft bearing impact test bench, which comprises a power system, a test bench main body, a loading system and a lubricating system, wherein the power system comprises a driving motor and a speed increasing box; the test bench main body comprises a bearing test cavity; the bearing test cavity comprises a test shaft, a test bearing, a radial loading mechanism and an axial loading mechanism; the driving motor, the speed increasing box and the test shaft are connected in sequence; the radial loading mechanism and the axial loading mechanism are connected with the loading system; the loading system comprises an axial loading servo oil cylinder and a radial loading servo oil cylinder; the axial loading servo oil cylinder and the radial loading servo oil cylinder areconnected with the same hydraulic station and are connected with the force sensor, the displacement sensor and the servo valve. Impact load loading and static load loading of the test bearing can berealized at the same time, alternating load borne by the main shaft bearing in actual working conditions can be simulated, the control precision of the load can be improved, and the test result is more real, accurate and effective.
Owner:湖南汉能科技有限公司
Mail explosive detection apparatus
ActiveCN101504381AReduce volumeIntuitive test resultsMaterial analysis by using resonanceSignal conditioningAmplifier
The invention discloses mail explosive detection equipment, which comprises a machine cabinet (1), a control machine (10), a radiofrequency power amplifier (9) and a signal conditioning and control box (8), wherein a shielded box (7) is arranged in the machine cabinet (1), and the machine cabinet (1) is provided with a display screen (5). The invention provides the integrated mail explosive detection equipment with small volume, intuitive and effective detection result, and simple and convenient operation.
Owner:CHINA INSTITUTE OF ATOMIC ENERGY
Detection and quality control kit for hepatitis A viruses and noroviruses in water sample, as well as detecting method
InactiveCN105154590AMonitor Lysis EfficiencyAccurate Lysis EfficiencyMicrobiological testing/measurementMicroorganism based processesEscherichia coliPositive control
The invention discloses a detection and quality control kit for hepatitis A viruses and noroviruses in a water sample, as well as a detecting method. The kit comprises a tube of HAV 2*RT-PCR mix, a tube of NV GI+GII type 2*RT-PCR mix, a tube of MS2 2*RT-PCR mix, a tube of RNase-free water, a tube of HAV positive control, a tube of NV GI+GII positive control and a tube of coliphage MS2(2.5*1010 pfu / mL). The detecting method comprises the following steps: 1, virus concentration; 2, virus RNA extraction; 3, coliphage MS2 standard curve establishment; 4, hepatitis A viruses, norovirus GI type, norovirus GII type and coliphage MS2 detection; 5, virus RNA recovery ratio determination; 6, result judgment. According to the detection and quality control kit for the hepatitis A viruses and noroviruses in the water sample, as well as the detecting method, the quality of the whole virus detection process is effectively controlled through the key steps of sample pretreatment, detection, result judgment and the like, the stability, accuracy and controllability of the detection process are ensured, and the detection technology blank in the field is filled.
Owner:INSPECTION & QUARANTINE TECH CENT SHANDONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
Image significance object detection method based on adaptation fusion mechanism
ActiveCN107145892AHigh precisionImprove robustnessCharacter and pattern recognitionSelf adaptiveObject detection
The present invention discloses an image significance object detection method based on an adaptation fusion mechanism. Location detection of the significance area of an image is performed through color, depth and distance information, the initial detection result of a significance object in the image is obtained, and an adaptation fusion mechanism is employed to optimize a final result of significance detection. The image significance object detection method based on the adaptation fusion mechanism employs the multi-layered depth information to perform significance detection to increase accuracy of detection of the significance object; and the present invention further provides an adaptation fusion mechanism to increase the robustness of the significance detection through continuous fusion so as to apply to more complex scenes and widen the application range. The image significance object detection method based on the adaptation fusion mechanism can more accurately display the significance area in the image to provide accurate and useful information to the following applications such as target identification and classification, etc.
Owner:PEKING UNIV SHENZHEN GRADUATE SCHOOL
Hairpin probe group based on enzyme assisted cascade cycle amplification, preparation method and use
InactiveCN111793622AAchieve cycle amplificationHigh sensitivityMicrobiological testing/measurementDNA/RNA fragmentationFluorescenceBiological target
The invention relates to the field of biochemical analysis and detection, and in particular relates to a hairpin probe group based on enzyme assisted cascade cycle amplification, a preparation methodand use. According to the hairpin probe group provided by the invention, a biological target to be detected is used as a first-level target to trigger first target cycle amplification, so that enrichment amplification of a secondary target sequence is realized; simultaneously, the secondary target sequence also can trigger second target cycle amplification; fluorescent signal sequences are continuously released; and thus, cascade cycle amplification of the fluorescent signal sequences is realized. By adoption of the hairpin probe group, a lot of fluorescent signal sequences can be triggered and generated only through trace biological targets; the very high fluorescence signal intensity is generated; the detection sensitivity of the biological target is obviously increased; the detection limit is increased; simultaneously, the specificity of the cascade cycle amplification of the probe in combination with the biological target is high; and a detection result is accurate.
Owner:JIANGSU INST OF NUCLEAR MEDICINE
Method for quantitatively detecting chromium in edible gelatin on basis of terahertz time-domain spectroscopy
InactiveCN107290302AEasy to prepareNo chemical treatment requiredPreparing sample for investigationMaterial analysis by optical meansTime domainGelatin
The invention discloses a method for quantitatively detecting chromium in edible gelatin on the basis of terahertz time-domain spectroscopy. According to the method, firstly, multiple samples with different chromium content are prepared, then the multiple samples and a blank state are tested respectively by a terahertz time-domain spectral system, time-domain terahertz signals of the to-be-detected samples and the blank state in a preset frequency band are obtained, an absorption coefficient of each sample is calculated by performing Fourier transform on the time-domain terahertz signals, and a quantitative analysis model for the chromium content and the absorption coefficients is constructed with a least square method, so that the chromium content of an unknown sample can be calculated according to the absorption coefficient of the unknown sample. The samples are prepared conveniently and rapidly, addition of other substances is not needed in a detection process, a chemical processing process is not needed, the operation is simple, the analysis speed is high, and the cost is low; besides, by means of the constructed quantitative analysis model, a detection result is more real and more effective.
Owner:MINZU UNIVERSITY OF CHINA
Swing seat anti-impact tester
The invention discloses a swing seat anti-impact tester. The swing seat anti-impact tester comprises an aluminum ball, a controller, a swing seat and a fixing support, wherein an angle selection mechanism is arranged at a position corresponding to the swing seat for adjusting and fixing the testing angle of the swing seat. The tester is provided with a left-right movement adjusting mechanism and an up-down lifting adjusting mechanism for adjusting the position of the aluminum ball, so as to be adaptive to swings having different specifications. According to the tester, a sensor is used for measuring data for improving the testing precision, and an electromechanical device is used for adjusting the position of the aluminum ball and the testing angle of the swing seat, so that the operation is simplified, the testing data is more reliable and the quality of the swing is promoted.
Owner:永嘉县质量技术监督检测研究院
Prism type detection system for loss and gain ratios between resonator modes and detection method
ActiveCN103674484AAccurate locationGood detection positionOptical apparatus testingResonant cavityPhotovoltaic detectors
The invention discloses a prism type detection system for loss and gain ratios between resonator modes and a detection method. The detection system comprises a prism type laser connected with a resonator mode state servo controller. Outgoing laser beams are projected to a double-light window photoelectric detector through a coupling output lens, the double-light window photoelectric detector is arranged on an open servo base which is respectively connected with an oscilloscope and a computer, and the open servo base is also connected with the resonator mode state servo controller. The method includes the steps that 1) the outgoing laser beams of the prism type laser are projected to the double-light window photoelectric detector; 2) the servo base exerts mechanical dithering; 3) dithering optical signals of the double-light window photoelectric detector are modulated and read through the oscilloscope; 4) the position, where the prism type laser outputs light, relative to the double-light window photoelectric detector is adjusted until two paths of signal amplitudes are the same; 5) the double-light window photoelectric detector collects light intensity signals, and the light intensity signals are input into the servo base; 6) the result is transmitted to the computer. The system is simple in visualization operation, convenient and fast to process and accurate in detection result.
Owner:西安北方捷瑞光电科技有限公司
cDNA chip for determining gene expression information of crucifer under threatening conduction
InactiveCN1952172AEnable high-throughput detectionGood repeatabilityMicrobiological testing/measurementBiological StressCDNA Microarrays
The invention discloses a cDNA chip for detecting gene expressing information of crucifer plants under biological or non-biological stress. The gene chip takes the cDNA fragment of Chinese cabbage gene under versity and special growing stage as the probe which is composed by probe with sequences shown in SEQ ID No.:1-221DNA and probe sequence from 3885 strips gene bank. The invention can be used not only in batch-detecting of gene expressing information of crucifer plants under biological or non-biological stress, screening of differential gene, but also can be used to build gene expressing profiles of cruciferous plants in different growing stages, different tissues and organs, and even idioblast. High-throughput detection of gene expression information can be carried out by the application of the gene chip, which is convenient and safe, with reliable and effective test results, and can save a lot of time, human, material and financial resources and has broad application prospects.
Owner:BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
Blade cutting device and containment testing device for aero-engine fan case
ActiveCN110030042ASolve the problem of poor speed control accuracy of fly offSolve the problem of extra kinetic energyEngine testingMachines/enginesAviationStress concentration
The invention belongs to the field of aero-engine fan case containment testing, and particularly relates to a blade cutting device and a containment testing device for an aero-engine fan case. The blade cutting device comprises a charging hole, a cutting cable, plastic steel mud, a detonator fixing bolt and a detonating switch, wherein the charging hole is formed in a to-be-cut blade tenon, and the two ends of the charging hole are provided with internal threads; the cutting cable is laid in the charging hole; the plastic steel mud is arranged in the gap between the cutting cable and the charging hole; the detonator fixing bolt is installed at the bottom of one end of the charging hole through a thread and internally provided with a detonator, and two detonator leads of the detonator stretch out of the top of the detonator fixing bolt through a lead passing hole; and the detonating switch is connected with the detonator leads through two detonating power lines so that the detonator canbe ignited. According to the blade cutting device and the containment testing device, a blade can be cut off at the specific rotation speed, so that the testing result is real and effective, in addition, large stress concentration can be avoided, the detonator and the cutting cable can be installed finally, the operation safety of testing piece assembling and lead working is ensured, and it can be ensured that a detonating system operates safely and reliably.
Owner:AECC SHENYANG ENGINE RES INST
Detection method of interferon biological activity
ActiveCN106546747AEasy to observeImprove biological activityBiological material analysisBiological testingPig kidneyInterferon alpha
The invention relates to a detection method of interferon biological activity. According to the detection method, pig kidney cells (IBRS-2) are taken as measuring cells, vesicular stomatitis virus (VSV) is taken as the challenge virus to detect interferon activity. The detection method can be applied to pig IFN-gamma titer measuring to solve problems in the prior art in pig IFN-gamma titer measuring that observation is difficult to realize, subjective error is large, sensitivity is poor, and activity detection is impossible to realize because of species specificity. The detection method can also be used for measuring of titer of other pig interferons such as IFN-alpha, and also can be used for measuring non-II-type human interferons such as human IFN-alpha.
Owner:GENSUN INST OF BIOMEDICINE
An electric bicycle performance testing platform
ActiveCN106053096BWith friction resistance compensation functionFriction resistance compensationVehicle testingDevice WheelElectric vehicle
Owner:天津铭志成科技有限责任公司
Aircraft vibration comfort test device and test method in full-aircraft state
PendingCN114486138AEnable accurate mock loadingThe test result is validVibration testingVertical vibrationControl theory
The invention belongs to the technical field of aircraft vibration comfort test, and particularly relates to an aircraft vibration comfort test device and test method in a full-aircraft state. The test device comprises a nose landing gear vibration load loading device for applying a vibration load to a nose landing gear; the two main undercarriage vibration load loading devices are used for applying vibration loads to the main undercarriages on the corresponding sides; the two engine spanwise vibration load loading devices are used for applying spanwise vibration loads to the engines on the corresponding sides; the two engine vertical vibration load loading devices are used for applying vertical vibration loads to the engines on the corresponding sides; the two aircraft lift force simulation devices are used for applying simulation lift force loads to the main wings on the corresponding sides. According to the aircraft vibration comfort test device and test method, accurate simulation loading of main vibration source excitation of the aircraft in different flight states in the full-aircraft state can be realized, and a relatively more effective test result can be obtained by carrying out an aircraft vibration comfort test in the full-aircraft state based on the accurate simulation loading of the main vibration source excitation of the aircraft in the full-aircraft state.
Owner:CHINA AIRPLANT STRENGTH RES INST
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