Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
150results about How to "Reduce accidental error" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Method and system for testing dynamic stiffness
ActiveCN102980756AEliminate truncation errorReduce accidental errorMachine part testingEngineeringAcceleration Unit
Owner:SOUTHWEST JIAOTONG UNIV
Test device and method for simulating natural gas leakage in soil
ActiveCN103712755APrevent air leakageSource Strength ControlMeasurement of fluid loss/gain rateShielded cableCombustible gas
The invention provides a test device and method for simulating natural gas leakage in soil. The test device comprises a compressed gas steel cylinder, a pressure reducing valve, a gas flow meter, a PC computer, a pressure-tolerant hose, a rigid pipe, a gas buffer cylinder, a combustible gas probe, a multichannel combustible gas probe controller, a waterproof shield cable, a rigid hose and the like. The gas buffer cylinder and the combustible gas probe are embedded in outdoor soil. Through the rigid hose, zero calibration can be carried out on the combustible gas probe buried in the ground. The test method comprises the steps that the pressure reducing valve of the compressed gas steel cylinder of natural gas is opened; the gas buffer cylinder is filled with the natural gas successively through the gas flow meter, the pressure-tolerant hose and the rigid pipe; the combustible gas probe buried in the ground is used to collect the concentration of the gas leaking out from the gas buffer cylinder; the diffusion law of the natural gas in soil after natural gas pipe leakage is researched; and a technical support is provided for the prevention and the disposition of a natural gas pipe leakage accident.
Owner:TSINGHUA UNIV
Six-degree-of-freedom laser targeted integral calibration method
InactiveCN108645428ACalibration results are reliableHigh measurement accuracyMeasurement devicesLaser targetEngineering
The invention provides a laser targeted integral calibration method by aiming at large-size 6D laser target, which relates to the field of large-size space six-degree-of-freedom attitude measurement,and fully uses the advantages of high precision and programmable control of a precious triaxial rotary table. Artificial participation part is not contained during a process, the calibration reliability is increased, and the calibration efficiency is greatly increased. The integral calibration method uses an external frame and a middle frame of the precious triaxial rotary table to drive the 6D laser target to rotate at front of emitting light of a total station to construct a measured control field, the projection position of a light vector under a camera coordinate system is calculated, thereal projection position of the camera is obtained through detection, an attitude relation equation of a clinometer coordinate system and a rotary table coordinate system is established to obtain an attitude relation of the clinometer coordinate system and the camera coordinate system, and the unknown relation parameters in a 6D laser target resolving model can be calibrated. The method can be mainly used for six-degree-of-freedom attitude measurement.
Owner:TIANJIN UNIV
Ultrasonic method for measuring residual stress of cambered workpiece
ActiveCN106813819AReduce accidental errorAvoid inaccurate residual stress measurementsAnalysing solids using sonic/ultrasonic/infrasonic wavesForce measurementLongitudinal wavePropagation time
An ultrasonic method for measuring residual stress of a cambered workpiece comprises the following steps: S1, performing stress testing to obtain a function curve t0x=M (x) between a propagation distance x and the propagation time t0x of a longitudinal critical refraction wave in a zero-stress plate calibration block; S2, performing stress testing to obtain a function curve Kx=F (x) of a nominal acoustic elasticity coefficient Kx corresponding to the propagation distance x; S3, measuring the propagation time t of the longitudinal critical refraction wave in a cambered workpiece; S4, measuring a propagation distance a of the longitudinal critical refraction wave in the cambered workpiece; S5, according to the function curve t0x=M (x) and the function curve Kx=F (x), obtaining the propagation time t0a and a nominal acoustic elasticity coefficient Ka corresponding to the propagation distance a in a zero-stress state, and then according to a formula sigma=K (t-t0), working out the residual stress of the cambered workpiece to be measured. By the ultrasonic method, the residual stress of the cambered workpiece can be measured conveniently and fast; meanwhile, the problem that in the prior art, calibration is inaccurate is solved, so that the ultrasonic measurement accuracy of the residual stress of the cambered workpiece is greatly improved.
Owner:四川中创辰安检测技术有限公司
Quantitative analysis method of solution chromogenic reaction and detector thereof
ActiveCN104655572AThe result is accurateReduce accidental errorMaterial analysis by observing effect on chemical indicatorColor/spectral properties measurementsData acquisitionHue
The invention relates to a quantitative analysis method of solution chromogenic reaction and a detector thereof. According to the invention, by utilizing the photopermeability characteristics of a solution generated by reaction between chromogenic substances and a chromogenic agent, and utilizing a calculation module designed according to color space concept, the three primary colors including red, green and blue which are shown by transmission light are converted into measurement points shown by performance numbers including lightness, green-red and blue-yellow, the hue and target color difference of the solution are calculated, a standard curve of hue, target color difference and concentration of chromogenic substances is fitted by a polynomial expression, and the concentration of a practical sample is calculated by an interpolation method. According to the principle, the designed detector consists of an upper computer and a lower computer which are connected by a communication data line (16), and comprises a lower computer circuit (5), a sample cell (2), an LED light source (14), an upper computer circuit (18), a color collecting system, a data acquisition and processing system, an operation system and working procedures. The detector is simple in structure, is convenient and rapid to operate, is accurate in result, and can be widely applied to the quantitative detection of the solution chromogenic reaction.
Owner:上海绿帝环保科技有限公司
Existing railway survey method based on total station
InactiveCN101539410ARealize measurementAchieving processing powerUsing wave/particle radiation meansHydrologyTotal station
The invention relates to an existing railway survey method based on a total station. In the method, the total station and an electromagnetic wave reflection device are adopted to survey an existing railway. The survey method comprises the following steps: firstly arranging the electromagnetic wave reflection device at the center of the existing railway line to be surveyed by virtue of a traditional measuring square ruler; determining position of the total station, and surveying the line center by the electromagnetic wave reflection device to obtain distance (slant distance), horizontal angle and vertical angle of the surveyed line and 3D coordinates of survey points (X, Y and H) of the measured line (slope distance); and then analyzing and calculating the survey data by a PDA, and performing survey on line mileage, center line, traverse, elevation and other railway equipment. The existing railway survey method based on a total station reduces on-track operation times of operators, guarantees safety of surveyors, instruments and equipment, accuracy and reliability of the surveyed data, improves production efficiency of the existing railways, and alleviates labor intensity of the operators.
Owner:黄远宏 +1
Train wheel hub inner hole diameter laser measurement system and measurement method thereof
The invention discloses a train wheel hub inner hole diameter laser measurement system and a measurement method thereof, and belongs to the technical field of measurement.The measurement system comprises a bottom frame, a worktable, limiting mechanisms, a high-precision laser distance measuring sensor assembly, a lifting mechanism, an oil cylinder head, an oil cylinder, connecting screws, a hydraulic station, a hydraulic valve station, a data acquisition card, a controller, a displayer, a relay, a cable power source, a signal communication module, a driving control module and a data acquisition and processing module.According to the train wheel hub inner hole diameter laser measurement system and the measurement method thereof, a laser ray is perpendicular to the surface of an inner hole when used for measuring the wheel inner hole, a laser device measures one piece of data at one part of the wheel inner hole every time rotating by 90 degrees to obtain four pieces of data, the diameter of the inner hole at the part is obtained through geometrical relationship calculation, and the distance between a laser emitting point and the rotating center of an indexing table is calibrated through the known diameter of the wheel inner hole.The train wheel hub inner hole diameter laser measurement system and the measurement method thereof have the advantages of being high in speed, precision and stability and the like, and can be applied to and popularized in detection of shapes of hole parts.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY
Two-dimensional highly effective liquid phase chromatographic system and its uses
ActiveCN101169391AEasy pretreatmentThe pre-processing process is simpleComponent separationImage resolutionHigh pressure
The present invention relates to high-performance liquid chromatography, specifically a two-dimensional high-performance liquid chromatography system and its application, consisting of five high-pressure liquid chromatography solvent delivery pumps, a solvent mixer, a ten-way valve, and a six-way valve 1. Two liquid chromatography analysis columns suitable for the separation of hydrophobic components and hydrophilic components and a component transfer column. The system of the present invention is suitable for the separation and detection of a variety of different hydrophobic small molecular components in complex system samples. It is easy to operate, good in flexibility, strong in universality, short in time consumption, and can be automatically separated on two chromatographic columns at the same time. The hydrophilic and hydrophobic components in complex system samples can significantly improve the resolution and peak capacity of the analysis on the basis of meeting the qualitative and quantitative analysis requirements of the sample components.
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Based on laser rediffusion type atmospheric visibility testing method and testing instrument thereof
InactiveCN1948953AResolve errors due to atmospheric inhomogeneityAvoid errorsScattering properties measurementsColor/spectral properties measurementsExtinctionAtmospheric sciences
The invention relates to based on laser backscattering type atmospheric visibility measuring method and apparatus. It includes the following steps: respectively transmitting and receiving laser backscattering signal for five times as middle gain and high gain, sampling 400 points in each the received signal; respectively computing each fault extinction coefficient while sampling, computing its average extinction coefficient for five sets after removing the point with big error; computing whole relative extinction coefficient by data fusion algorithm; deducing the atmospheric visibility by relative extinction coefficient inversion. The invention has the advantages of high measuring precision, little volume, light weight, wide application range, and no collaboration object.
Owner:NAVAL UNIV OF ENG PLA
Verification device for Newton second law
InactiveCN102509495AAccurate verificationNo systematic errorEducational modelsEngineeringAcceleration Unit
The invention relates to a verification device for the Newton second law. The verification device is characterized in that: a photoelectric door A (5) is taken as a switch for timing start of a digital millisecond meter A (1) and a digital millisecond meter B (2); the photoelectric door A (5), a photoelectric door B (6) and a photoelectric door C (7) are fixed on a steel plate (3) in sequence, and are taken as timing switches of the digital millisecond meter A (1) and the digital millisecond meter B (2) for recording the acceleration motion time of a trolley (4) on the steel plate (3) and computing the acceleration of the trolley (4); the position of a base plate (8) is changed, and the mass of the trolley (4) is kept constant, so that direct proportion between the acceleration and resultant force can be verified when the mass is constant; and meanwhile, the position of the base plate (8) and the mass of the trolley (4) are changed, and the resultant force is kept constant, so that inverse proportion between the acceleration and the mass can be verified when the resultant force is constant. The verification device can be applied to a verification experiment of the Newton second law in physics.
Owner:CHANGCHUN UNIV OF TECH
Method for measuring contents of ferrous ions and iron ions in glass
InactiveCN102004084AAvoid defectsShort operating timeColor/spectral properties measurementsLuminosityLength wave
The invention discloses a method for measuring contents of ferrous ions and iron ions in glass, comprising the following steps: measuring the absorption spectrum of a provided glass sheet within the waveband range of 350-1100nm by using an ultraviolet and visible spectrophotometer; dividing the absorbency data in the absorption spectrum by the thickness of the glass sheet to obtain the absorbency of glass sheet with unit thickness, thereby further obtaining the spectrum curve of relationship between the wavelength in the absorption spectrum and the absorbency of the thickness of the glass sheet; carrying out smoothing treatment and basic line correction on the spectrum curve successively; and carrying out area integration on the spectrum curve after line correction respectively within the waveband range of 370-400nm and within the waveband range of 520-1100nm, and calculating the contents of iron ions and ferrous ions according to corresponding integrated areas. By using the method, the contents of iron ions and ferrous ions can be measured simultaneously, the operation is simple and fast, data processing is simple and convenient, and the reliability and the repeatability are good, therefore, the method can meet on-line monitoring requirement of glass and is applicable to industrial popularization.
Owner:WUHAN UNIV OF TECH
Bidirectional multifunctional laser plumbing apparatus
InactiveCN101149261AImprove vertical measurement accuracyReduce system errorSurveying instrumentsZenith telescopeStructural engineering
A kind of two-way multifunctional laser vertical collimator is made of bracket, zenith telescope module and nadir external laser telescope module, sphere vertical axis module and the triangular base. It is characterized in that: the zenith telescope module and nadir external laser telescope module are set on the A and B plane of main bracket top respectively, which are installed at the bracket or vertical axis center by the socket bolt and the column head bolt respectively. A phi 108 base hole is set below the main bracket, while, the outer of main bracket is set with a V-shape axile bush which is fixed the main bracket on the vertical axis module by a hole adjusting bolt to form a combination shafting which can rotate with the vertical axis; otherwise, a long level tube is installed on the side of main bracket which is used to adjust level and plumb.
Owner:SHANGHAI GUANGZHONG MAPPING INSTR
Precise testing deployment device of antenna spatial angle identified by wireless radio frequency
InactiveCN101533955AMeet the requirements of random arrangementReduce accidental errorElectrical testingAntennasProtractorRadio frequency
The invention relates to a precise testing deployment device of an antenna spatial angle identified by wireless radio frequency, belonging to the technical field of testing and comprising a RFID read-write antenna, an antenna standing finish, an antenna connecting strut, a rotating platform, a mild steel shelf bracket and a handheld controller, wherein, the RFID read-write antenna is fixed at the antenna connecting strut via the antenna standing finish, the other end of the antenna connecting strut is connected to the rotating platform which is fixed at the mild steel shelf bracket, and the handheld controller is connected to the rotating platform via control wire. The invention overcomes the initial antenna placement method that protractors are used for measuring and adjusting simultaneously; and can reach the precise level that takes second as the unit, breakthrough the defect of low precision of ordinary protractors and excludes the interfere of artificial accidental error.
Owner:SHANGHAI JIAO TONG UNIV
Intelligent programmable-control microcurrent measurement display system
InactiveCN102520238AReduce lossImprove measurement efficiencyMeasurement using digital techniquesControl engineeringComputer science
The invention discloses an intelligent programmable-control microcurrent measurement display system, which is characterized by comprising a computer control module, a display module, a communication module, an A / D (analog / digital) conversion module, a microcurrent measurement system programmable control module, a programmable-control current signal amplifying module and a programmable-control filter module. Microcurrent signals to be measured are input to the programmable-control current signal amplifying module, are amplified and then converted into voltage signals, the voltage signals are input to the programmable-control filter module so as to be filtered, the filtered signals are input to the display module through the A / D conversion module and the communication module so as to be displayed, the programmable-control current signal amplifying module, the programmable-control filter module and the A / D conversion module are controlled by the microcurrent measurement system programmable control module, and the computer control module controls the microcurrent measurement system programmable control module through the communication module. The intelligent programmable microcurrent measurement display system is low in manufacturing cost, higher in adaptability and lowered in price resistance to scientific research.
Owner:XIAN JIAOTONG LIVERPOOL UNIV
Hand/arm vein fusion identification method based on cumulative matching and equal error rate
ActiveCN109190460ABiometric AdvantageProven RobustnessMultiple biometrics useSubcutaneous biometric featuresError ratioBiometric trait
The invention discloses a hand / arm vein fusion identification method based on cumulative matching and an equal error rate curve, belonging to the field of information perception and recognition technology. The method proposes two levels of weights according to the recognition performance of the two biological features: firstly, the global weights of fractional fusion are calculated according to the area above the CMC curve by utilizing the characteristics of the CMC curve; then the optimal classification threshold is obtained by ERR curves, and the adaptive weights are calculated, which are multiplied as the total weights and fused with fractional weighting. This method is beneficial to highlighting the advantages of biometrics, and multi-biometrics fusion can make use of the independenceand complementarity of features, which can make up for the shortcomings of single-mode biometrics recognition.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Method and device for fast obtaining course angle of trackless vehicle in underground roadway environment
ActiveCN103869282AAchieve self-acquisitionHigh precisionAngle measurementNavigation by terrestrial meansSimulation
The invention provides a method and a device for fast obtaining a course angle of a trackless vehicle in an underground roadway environment. The method comprises the steps that in a self coordinate system of the trackless vehicle, a plurality of corresponding distances between a coordinate origin and a plurality of points on the peripheral roadway wall in different angle directions are measured; the course angle of the trackless vehicle is calculated according to measurement results. The device comprises a distance detecting module and a course angle calculating module, wherein the distance detecting module is used for measuring the corresponding distances between the coordinate origin and the points on the peripheral roadway wall in different angle directions in the self coordinate system of the trackless vehicle, and the course angle calculating module is used for calculating the course angle of the trackless vehicle according to the measurement results. The method and the device can realize the self obtaining of the course angle of the trackless vehicle in the underground roadway environment, and are particularly applicable to unmanned autonomous running vehicles.
Owner:BEIJING GENERAL RES INST OF MINING & METALLURGY +1
Process for determining hydrogen fluoride in lithium ion cell electrolyte
InactiveCN1632558AReduce accidental errorReduce the incidence of accidental errorsChemical analysis using titrationMaterial analysis by electric/magnetic meansHydrogen fluoridePotassium
This invention discloses a lithium ion battery hydrofluoric content test method in the electrolyte, which uses alcoholate and alkali metals as standard solution and is characterized by the following: to choose certain electrolyte with HF to be measured to test its electrolyte potential; to join the above quantity of the known concentration to the electrolyte to be measured to test the electrolyte potential after the joining; to compute the density of the HF in the electrolyte according to the relative data.
Owner:OCEAN UNIV OF CHINA +2
Thermocouple arrangement method for measuring axial temperature distribution of intermediate joint of high-voltage cable
ActiveCN108344519AReduce accidental errorThermometer detailsThermometers using mean/integrated valuesCarrying capacityEngineering
The invention discloses a thermocouple arrangement method for measuring the axial temperature distribution of an intermediate joint of a high-voltage cable. In view of the axial difference of temperature distribution at different positions of a contact interface between a cable body and the intermediate joint, a fixed point thermocouple arrangement method for studying the axial temperature variation law is provided. From the selection and determination of specific thermocouple positions, the determination of the number of temperature measuring points, lead arrangement, the determination of hole depth, and the specific arrangement of the thermocouple, the method comprehensively measure the temperature distribution at positions of the intermediate joint of the cable, reduces the accidental error and the inherent error by repeating experiments to take an average, and lays an important experimental foundation for studying the relationship between the temperature distribution of the intermediate joint and the current carrying capacity and interface pressure.
Owner:SOUTH CHINA UNIV OF TECH
Object identification method based on high-resolution one-dimensional image information fusion
ActiveCN106443625AIncrease the number ofImprove target recognition rateWave based measurement systemsImage resolutionRadar
Provided is an object identification method based on high-resolution one-dimensional image information fusion. The purpose of the invention is to solve how to perform information fusion on the observations of different radars in a network in order to increase resolution. The method comprises a step 1: detecting two aircrafts by using two kinds of radars with different waveforms generated by BSS so as to obtain echo data of the two different radars; a step 2 of performing pulse compression on the echo data to obtain two groups of high-resolution one-dimensional images of an object; a step 3 of performing data fusion on the two groups of high-resolution one-dimensional images by using a weighted average method to obtain a new group of one-dimensional images, wherein a fusion weight is randomly selected between 0 to 1; a step 4 of subjecting the two groups of high-resolution one-dimensional images to a set threshold to acquire the number of sampling points; a step 5 of multiplying the number of sampling points of the new high-resolution one-dimensional images by a preset distance resolution (actual distance between the two sampling points) to obtain the length of the object; and a step 6 of performing object identification by using Bayesian classification.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Equipment for monitoring bacterium growth and monitoring method
ActiveCN107460119AHigh degree of automationImprove accuracyBioreactor/fermenter combinationsDrawing from basic elementsHigh-Throughput Screening MethodsHigh-throughput screening
The invention provides equipment for monitoring bacterium growth and a monitoring method. The equipment comprises a constant-temperature incubator, scanners, a computer and a bacterium growth monitoring processing system which is arranged in a CPU of the computer, wherein the plurality of scanners, which are connected to the computer by virtue of data lines and concentrators, are arranged in the constant-temperature incubator, and a plurality of culture dishes are arranged in each scanner; and the bacterium growth monitoring processing system, which is arranged in the CPU of the computer is composed of an image acquisition module, an image processing module, an image analysis module and a result representation module. According to the monitoring method provided by the invention, the consistency of colony size and a pixel area can be obtained by virtue of the scanners, so that the situation on bacterium growth can be obtained; the method, in comparison with a conventional method which adopts a spectrophotometer to measure a bacterium amount, can greatly reduce system errors and accidental errors; the monitoring method provided by the invention is applicable to bacterium counting as well as bacterium separation and identification, and the monitoring method is also applicable to mixed sample detection, high-throughput screening of plasmid inhibitors and the like; and in addition, a function of microbial imaging is achieved.
Owner:SOUTH CHINA AGRI UNIV
Culture medium to detect Bifidobacterium and quick detection and counting method
PendingCN110055301AReduce accidental errorObserving and counting clearlyMicrobiological testing/measurementBifidobacteriumGreek letter alpha
The invention discloses a culture medium to detect Bifidobacterium and a quick detection and counting method, and relates to the technical field of Bifidobacterium detection. The culture medium hereincomprises a basic medium, and rendering substrate 5-bromo-4-chloro-3-indol-alpha-D-galactoside and / or 5-bromo-4-chloro-3-indol-beta-D-galactoside; alpha-galactosidase generated by metabolism in the Bifidobacterium culture process reacts with the rendering substrate to release indole, so that a blue Bifidobacterium colony is present on the culture medium, or blue halo is present around the Bifidobacterium colony; interfering bacteria cannot display blue color without alpha-galactosidase; the rendering substrate can inhibit other interfering bacteria; the colony can grow quickly after a surfactant is added; the growth of other interfering bacteria can be inhibited by adding antibiotics to the culture medium herein. The culture medium, when used to detect and count Bifidobacterium, allows the Bifidobacterium colonies to be counted conveniently and quickly; the results are significant, detection cost is low, and accuracy is high.
Owner:上海源本食品质量检验有限公司
Device and method for simultaneously measuring binary system thermal diffusivity and mutual diffusion coefficient
ActiveCN110672559ARealize global scanning measurementSignificant statistical advantageMethod using image detector and image signal processingScattering properties measurementsLight beamThermal diffusivity
The invention provides a device and method for simultaneously measuring a binary system thermal diffusivity and a mutual diffusion coefficient. According to the device, a polarizing light path is usedfor expanding a light beam into uniform parallel beams with large diameters, universal scanning measurement can be realized after the light beams enter an experiment body, an image with transmissionlight and scattered light overlapped in an interference mode can be obtained through a detection analysis unit, and scattered light information corresponding to all scattering volumes is contained inthe image. According to the method for simultaneously measuring a thermal diffusivity and a mutual diffusion coefficient of a binary fluid mixture, scattered light intensity information relevant to time can be obtained through image difference analysis, and thermal diffusivity and mutual diffusion coefficient data can be simultaneously obtained through calculation. Universal measurement and simultaneous measurement of the thermal diffusivity and the mutual diffusion coefficient can be achieved, mechanical control over the angle is not needed, scattered light signals under a large quantity of independent scattering vectors can be simultaneously collected, and measuring precision is remarkably improved.
Owner:XI AN JIAOTONG UNIV
Wafer data detection method and system, storage medium and test parameter adjustment method
ActiveCN113092981AImprove accuracyHigh speedElectronic circuit testingCharacter and pattern recognitionAlgorithmTest region
The embodiment of the invention provides a wafer data detection method and system, a storage medium and a test parameter adjustment method. The wafer data detection method comprises the steps of obtaining to-be-detected first wafer test data and to-be-detected second wafer test data in a database, and partitioning the first wafer test data and the second wafer test data according to wafer position information of each chip in the first wafer test data and the second wafer test data, generating a plurality of first wafer partition test data and a plurality of second wafer partition test data; and detecting the correlation between the first wafer partition test data and the second wafer partition test data belonging to the same partition. According to the invention, the test area of the wafer is partitioned, and the correlation between the first wafer test data and the second wafer test data of the partition is detected, so that the correlation of the whole wafer test data is evaluated, and the accuracy of the correlation detection result of the wafer test data can be improved.
Owner:CHANGXIN MEMORY TECH INC
Indirect method for detecting lymphocyte subgroup with mono-clone antibody SPA hematid rosette method
InactiveCN101221181AAvoid damageAvoid vulnerablePreparing sample for investigationIndividual particle analysisLymphocyte subsetsIndirect Method
The invention relates to an indirect method for using a monoclonal antibody SPA red cell rosette to detect lymphocyte subsets. The method firstly prepares a primary antibody sensitized red blood cell preservation solution and a secondary antibody sensitized red blood cell preservation solution; secondly, the peripheral blood lymphocytes are separated, and then a secondary antibody sensitized red blood cell application solution and a primary antibody sensitized lymphocyte suspension are prepared by a calcium-free and magnesium-free Hanks balanced salt solution which contains 20 percent newborn calf serum; then the primary antibody sensitized lymphocyte suspension and the secondary antibody sensitized red blood cell application solution are mixed by the volume ratio of 1: 1 to form a mixed suspension; a centrifugation is carried out after the mixed suspension is statically settled under 18 - 28 DEG C, and then the mixed suspension is statically settled for 15 - 45 minutes at the temperature of 4 DEG C; finally, a pipette which is provided with a suction head is used for blowing and sucking the mixed suspension for 8 - 15 times, then cell smears are prepared and calculated by a high-power lens after natural drying and dyeing. Compared with the original McAb-A-E indirect method, the invention is characterized by simplified inspection process, short period, quantized control and satisfying the requirements of clinical inspection.
Owner:甘肃省医学科学研究院
Pseudomonas aeruginosa chromogenic culture medium and method for quick detection by same
PendingCN110129406AThe difference is obviousStrong specificityMicrobiological testing/measurementBiological material analysisNalidixic acidUltraviolet
The invention relates to the technical field of pseudomonas aeruginosa detection and discloses a pseudomonas aeruginosa chromogenic culture medium and a method for quick detection by the same. The pseudomonas aeruginosa chromogenic culture medium comprises a basic medium, a chromogenic substrate and an antibacterial agent. The chromogenic substrate comprises 2,3,5-phenyl tetrazolium chloride, 4-methyl umbelliferone-D-glucuronide, and the antibacterial agent comprises nalidixic acid, cycloserine and bile salt. 2,3,5-phenyl tetrazolium chloride acts on a pseudomonas aeruginosa metabolite to showa red color; 4-methyl umbelliferone-D-glucuronide acts on pseudomonas aeruginosa to show fluorescence under a 366nm ultraviolet lamp; by joint action of 2,3,5-phenyl tetrazolium chloride and the antibacterial agent, growth of common disturbance bacteria can be inhibited, and false positive results are avoided. By adoption of the pseudomonas aeruginosa quick detection method, detection and count of pseudomonas aeruginosa can be finished in 24h, and time saving, labor saving, stability, reliability and high sensitivity are realized.
Owner:上海源本食品质量检验有限公司
Vehicle endurance mileage prediction method and device, equipment and storage medium
PendingCN114274780AImplement segment predictionImprove forecast accuracyElectric devicesVehicular energy storageComputer scienceIndustrial engineering
Owner:CHINA FIRST AUTOMOBILE
Method for detecting content of gypsum particles in smoke of desulphuration outlet
ActiveCN107063916AGuaranteed accuracyReduce accidental errorWeighing by removing componentChemical analysis using precipitationGlass fiberSulfur trioxide
The invention discloses a method for detecting the content of gypsum particles in smoke of a desulphuration outlet. The method comprises the following steps: taking smoke from a measuring hole at the desulphuration outlet by using a smoke sampling gun with a built-in glass fiber filter membrane; taking down the glass fiber filter membrane in the smoke sampling gun, and acquiring the total crystal water content m<2> in a gypsum sample; acquiring the molar weight of total CaSO4 by a 'sulfur trioxide determining-barium sulphate gravimetric method' in section 11 in GB / T5485-2012 and a formula; acquiring the mass X1 of CaSO4.2H20 in the gypsum sample by a linear equation in two unknowns; calculating the content of the gypsum particles in the smoke; and verifying whether the data are qualified or not. The method has the advantage that the method for detecting the content of the gypsum particles in the smoke of the desulphuration outlet is simple, practical, rapid and accurate.
Owner:CHINA DATANG CORP SCI & TECH RES INST CO LTD EAST CHINA BRANCH
Radio wave tunnel scenograph
InactiveCN102944902AReduce accidental errorReduce work intensityDetection using electromagnetic wavesRadio receiverRadio wave
The invention provides a radio wave tunnel scenograph which comprises a radio wave receiver and a radio wave transmitter, wherein a plurality of receiving coils with antenna modules are arranged between the receiver and the transmitter; the antenna modules comprise singlechips, A / D (analog to digital) conversion modules and 2.4G radio communication modules; the A / D conversion modules and the 2.4G radio communication modules are connected with pins of the singlechips; the receiver comprises a singlechip, a data storage module and a 2.4G radio communication module; and the data storage module and the 2.4G radio communication module are connected with pins of the singlechip. According to the radio wave tunnel scenograph, the data collection quantity of an identical receiving point is increased greatly; the accidental error of single data is reduced; the interpretation accuracy is improved; the background interference can be eliminated effectively due to the fact that the data is measured before the transmitter transmits; the working strength of an operator of the receiver is reduced greatly; and the radio wave tunnel scenograph is high in interference resistance and is applicable to popularization and application.
Owner:CHONGQING SAFETY STAND TECH
NB-IOT (Narrow Band Internet of Things)-based high-voltage cable low-power-consumption online monitoring equipment
ActiveCN113267707AWide coverageMany connectionsNetwork traffic/resource managementParticular environment based servicesData packCurrent sensor
The invention discloses NB-IOT-based high-voltage cable low-power-consumption online monitoring equipment. The NB-IOT-based low-power-consumption online monitoring equipment comprises a current sensor, an AD conversion module, a main control chip, a PC terminal, an upper computer, an NB-IOT wireless communication module, a sensor group and a power management module. According to the invention, the main control chip carries out priority classification on various required data through equipment working modes, sheath current data and fault recording data are set as a first priority, and the data of the level need to be transmitted in all working modes. Data such as temperature, vibration and equipment information are set as a second priority, and the data of the level can be transmitted only in a normal working mode. In the data transmission process, through the limitation of the sizes of the data packets, the data packets with the too large data size are removed, uploading of invalid data is reduced, in different working modes, the frequency of data communication and the transmission amount of data communication can also be correspondingly changed, communication power consumption is reduced, and normal operation of equipment is also guaranteed.
Owner:HUAZHONG UNIV OF SCI & TECH
Method for imaging geometric model based on Pluecker straight line
ActiveCN104537655AImprove binding abilityStrong bindingImage enhancementImage analysisGeometric modelingComputer vision
The invention discloses a method for an imaging geometric model based on a Pluecker straight line, and belongs to the field of surveying and mapping. The method comprises the following steps that a homonymous straight line is extracted from image space and object space; the image space is linearly and spirally moved to be linearly coplanar with the object space, and a coplanar condition equation is obtained; a Pluecker straight line imaging geometric model of a strong geometric condition can be built through the coplanar condition equation; an outer orientation element is calculated through the least square adjustment theory. The spiral movement of a space vector can be visually and clearly represented through the Pluecker straight line, the model is simple, and the geometric meaning is clear. Compared with a traditional method, the imaging geometric model based on the Pluecker straight line is higher in geometric locating precision and more stable in result.
Owner:SUZHOU ZHONGKE IMAGE SKY REMOTE SENSING TECH CO LTD
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com