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.
66 results about "Characteristic energy" 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
In astrodynamics, the characteristic energy (C₃) is a measure of the excess specific energy over that required to just barely escape from a massive body. The units are length² time⁻², i.e. velocity squared or twice the energy per mass. Every object in a 2-body ballistic trajectory has a constant specific orbital energy ε equal to the sum of its specific kinetic and specific potential energy: ε=1/2v²-μ/r=constant=1/2C₃, where μ=GM is the standard gravitational parameter of the massive body with mass M, and r is the radial distance from its center.
Pulse shape discrimination method and apparatus for high-sensitivity radioisotope identification with an integrated neutron-gamma radiation detector
InactiveUS20070290136A1Measurement with scintillation detectorsMaterial analysis by optical meansCharacteristic energyGamma energy
A method and apparatus for discriminating the types of radiation interacting with an integrated radiation detector having of a pulse-mode operating photosensor which is optically coupled to a gamma-ray scintillator sensor and a neutron scintillator sensor and uses an analog to digital converter (ADC) and a charge to digital converter (QDC) to determine scintillation decay times and classify radiation interactions by radiation type. The pulse processing provides for, among other things, faithful representation of the true energy spectrum of the gamma radiation field and allows for radioisotope identification by searching for the presence of characteristic energy lines in the gamma energy spectrum. The pulse shape discrimination method ensures that the high sensitivity and resolution of the isotope identification function is not affected during operation in mixed neutron-gamma fields.
Owner:MORPHO DETECTION INC
Thermal and/or pressure regulation control system
InactiveUS20150335468A1Effective controlSpeed up recoveryTherapeutic coolingTherapeutic heatingControl systemCharacteristic energy
A control system for a thermoregulation assembly includes a fluid manifold assembly (12′) and a control unit (56′). The fluid manifold assembly includes a manifold output (26) for supplying thermoregulation fluid to an interface pack. The manifold assembly is operable to selectively provide thermoregulation fluid into the interface pack in accordance with feed parameters. The control unit (56′) can obtain a desired temperature profile and a conversion algorithm, the conversion algorithm providing a formula for deriving one of more feed parameters for bringing the interface pack to or maintaining the interface pack at a desired temperature dependent upon a characteristic energy transfer rate between a user and the interface pack. The control unit (56′) is operable to calculate one or more feed parameters from the desired temperature profile and the conversion algorithm and to operate the manifold assembly (12′) in accordance with the one or more feed parameters.
Owner:PHYSIOLAB TECH
Automatic sleep staging method based on multi-parameter feature combination
InactiveCN107007278AIncrease credibilityImprove accuracyRespiratory organ evaluationSensorsEcg signalCharacteristic energy
The invention relates to an automatic sleep staging method based on a multi-parameter feature combination. The method includes the steps of collecting EEG signals, EMG signals, ECG signals and respiration signals, denoising all signals, extracting energy ratios of alpha, beta, theta and delta characteristic waves of the EEG signals, extracting the sample entropy of the EEG signals by a sample entropy algorithm, extracting the high frequency characteristic energy ratio of the EMG signals by a wavelet decomposition algorithm, extracting the sample entropy of the ECG signals by the sample entropy algorithm, extracting the mean value of the respiration signals by an averaging method, inputting the five feature parameters into a support vector machine for training and testing, thereby obtaining classification results. According to the automatic sleep staging method, the method of extracting EEG, EMG, ECG and respiration multiple characteristics is adopted to greatly improve the accuracy and generalization ability of sleep staging. The experimental results are reliable and accurate in sleep staging, thereby providing an effective basis for assessing sleep quality and being of a good application prospect.
Owner:SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
Nuclide rapid identification method based on pattern recognition
ActiveCN103424766ALong measurement timeMeet the statistical error requirementsX-ray spectral distribution measurementCharacteristic energyRapid identification
The present invention relates to a method of applying a pattern recognition method to a digital spectrometer to carry out nuclide rapid identification. The method comprises the steps of using the digital spectrometer to carry out real-time acquisition and data pre-processing on a nuclear radiation pulse signal, and selecting the characteristic energy ray and the area increase ratio of the characteristic energy peak of a correlated nuclide as the needed characteristic information, wherein the characteristic energy ray can be used as the main characteristic to identify the existence of the nuclide, and the area increase ratio of the characteristic energy peak is used as the auxiliary characteristic to be used as the criterion of the parallel analysis of a multi-ray nuclide. The advantages of the present invention are that: the area increase ratio of the characteristic energy peak of the nuclide substitutes the operation in the conventional method of selecting the full-energy peak area of the characteristic ray of the nuclide as the basis of identifying the existence of the nuclide, so that the identification of the nuclide is not interfered by the full-energy peak counting area of the characteristic ray of the nuclide accumulated in the early stage, and the identification reliability of the nuclide is improved; the characteristic extraction process maps an input pattern from the object space to the characteristic space, so that the quantity of information is compressed, the identification and judgement are easy, and the identification speed and efficiency of the nuclide are improved.
Owner:PLA SECOND ARTILLERY ENGINEERING UNIVERSITY
Automatic sleep staging method based on multiple electroencephalogram and electromyography characteristics
ActiveCN106709469AIncrease credibilityImprove accuracyCharacter and pattern recognitionDiagnostic recording/measuringSleep stagingCharacteristic energy
The invention relates to an automatic sleep staging method based on multiple electroencephalogram and electromyography characteristics. The method comprises the following steps: collecting an electroencephalogram signal and an electromyography signal; utilizing wavelet decomposition to remove high-frequency noises from the electroencephalogram signal and the electromyography signal; extracting an energy ratio of alpha, beta, theta and delta characteristic waves of the electroencephalogram signal after removing the noise, thereby acquiring a first characteristic parameter; utilizing a sample entropy method to extract a sample entropy of the electroencephalogram signal, thereby acquiring a second characteristic parameter; utilizing a wavelet decomposition algorithm to extract a high-frequency characteristic energy ratio in the electromyography signal, thereby acquiring a third characteristic parameter; and inputting the first characteristic parameter, the second characteristic parameter and the third characteristic parameter to a support vector machine and performing training and testing, thereby acquiring a classifying result. According to the invention, the method for extracting multiple EEG and EMG characteristics is adopted and a support vector machine classifier is combined, so that the accuracy of the sleep staging is promoted; a cross validation result proves that the method has certain generalization ability; an experimental result is high in reliability; and the application prospect is excellent.
Owner:SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
LaBr3(Ce) crystal-based multi-channel gamma energy spectrum logging instrument
ActiveCN102094628AHigh pulse sampling rateReduce dead timeSurveyNuclear radiation detectionLow voltageCharacteristic energy
The invention relates to a LaBr3(Ce) crystal-based multi-channel gamma energy spectrum logging instrument. The instrument comprises a probe part, an operating platform, a cable and a winch, wherein the probe part comprises a LaBr3(Ce) crystal gamma ray detector formed by combining LaBr3(Ce) and a photomultiplier, a spectroscope amplifier, a peak holding circuit, a pulse amplitude analyzer and a high and low voltage power supply; the operating platform comprises a power supply converter and a computer; and the spectroscope amplifier receives a pulse signal from the detector, the pulse signal is input into the pulse amplitude analyzer through the peak holding circuit after passing through the spectroscope amplifier, and digital information output by the pulse amplitude analyzer is connected with a 485 communication interface of the computer through a 485 communication interface of the probe, and the cable. The logging instrument can directly measure the characteristic energy spectra of various radionuclides such as a uranium family, a thorium family, potassium and the like in nuclear resource logging, and has the characteristics of high energy resolution, measuring efficiency and stability, and the like.
Owner:EAST CHINA UNIV OF TECH
Power transformer winding fault diagnosing method
ActiveCN102788931AEasy extractionImprove accuracyElectrical testingDecompositionCharacteristic energy
The invention provides a power transformer winding fault diagnosing method, by which winding deformation fault diagnosis is performed through combination of frequency response analysis (FRA) and empirical mode decomposition (EMD). According to the power transformer winding fault diagnosing method, on the basis of energy change information in each interval during a winding deformation fault as well as the adaptive decomposing capacity of the empirical mode decomposition (EMD), a fault energy characteristic quantity of a winding is extracted to establish a fault energy database; the fault energy characteristic quantity is compared with an energy curve of a transformer winding without a fault; the change trend of the characteristic energy shows the working state of the transformer; and the method is used for establishing a mapping relationship between an intrinsic mode function of the winding deformation and an intrinsic mode function of an FRA signal and establishing an integrated fault diagnosis analysis system based on characteristic energy information of the EMD. The integrated fault diagnosis analysis system can accurately know a basic rule of the change of the transformer winding deformation energy and provides a new research way for determining the type and the degree of a transformer fault and estimating the developmental trend of the fault.
Owner:JIAXING UNIV
Method for monitoring and recognizing pulling rope corrosion and evaluating fatigue life on basis of computer vision
ActiveCN108225906AImprove accuracyImprove stabilityWeather/light/corrosion resistanceStrength propertiesPattern recognitionData set
The invention provides a method for monitoring and recognizing pulling rope corrosion and evaluating a fatigue life on the basis of computer vision. The method comprises the following steps: shootingan image of a corroded high-strength steel wire by a perspective inspection window at an anchoring end of a pulling rope, extracting image characteristics from the image, then building a corrosion-degree evaluation model, then building a fatigue-life characteristic energy number evaluation model, matching with a performance degrading state of the corrosion and the fatigue of the steel wire under an artificially accelerated corrosion test, and finally finishing the corrosion-state recognition and the fatigue-life evaluation of the in-service pulling rope. The method provided by the invention has the beneficial effects that the recognition accuracy is high, the speed is fast and the cost is low; the requirement for real-time data processing of online monitoring and early warning of corrosionand fatigue of the pulling rope also can be met, i.e., the image acquired by a consumer-grade ordinary camera is directly recognized without data-set updating; the automation, intelligentization, accuracy and robustness of corrosion monitoring and recognition and fatigue-life evaluation of the pulling rope are improved, and a solution is provided for automatic monitoring and recognition of the corrosion and the fatigue of the pulling rope of a bridge structure.
Owner:HARBIN INST OF TECH
Early fault determining method for bearing
ActiveCN104596766AConfirm authenticityVerify repeatabilitySubsonic/sonic/ultrasonic wave measurementMachine bearings testingTime domainSpectral bands
The invention relates to an early fault determining method for a bearing. The method comprises the steps of cutting an acquired bearing vibration time domain signal into N groups of secondary vibration signals according to the same length; 2, calculating local spectral band energy Mg of each secondary vibration signal, namely, 1) performing frequency domain conversion for each secondary vibration signal; 2) selecting a local spectral band from the whole Hilbert marginal spectrum based on the formula shown in specification as the interval, wherein fp is the bearing fault characteristic frequency calculated based on the bearing structural dimension, and delta f is 2Hz; 3) calculating the local spectral band energy through the formula shown in the specification, wherein h(f) is frequency amplitude in the local spectral band; 3, creating a local spectral band energy sequence through N Mg, wherein the local spectral band energy value of each vibration signal is Mf when the bearing is free of a fault; Mg is not less than the product of K and Mf at M times in the sequence, wherein K is a constant; the characteristic power rate (CPR) is determined according the formula shown in the specification; 4, determining the early fault when the CPR is more than or equal to some constant A.
Owner:CSSC SYST ENG RES INST
Power distribution network grounding fault detection positioning method
ActiveCN106990324AImprove ground fault detection ratePerfect feeder automation functionFault location by conductor typesWavelet decompositionCharacteristic energy
A characteristic energy method of the power distribution network grounding real-time fault detection is characterized by selecting a Daubechies8 wavelet filter to carry out the 4-order wavelet decomposition on a power distribution network fault recording zero sequence current time series; taking the integrated square of the fourth-layer wavelet decomposition coefficients as the characteristic energy of the fault monitoring, and determining whether a power distribution network grounding fault occurs according to the energy characteristic value of a zero sequence current; when the grounding fault occurs, searching a monitoring point having the largest characteristic energy in the feeder line branches as the fault starting point, and along with the flow-out bus directions of the power flow of the branches, searching a monitoring point having the smallest adjacent characteristic energy as the fault tail, thereby determining that a power distribution network grounding fault section is between the above head and tail end points.
Owner:BEIJING SIFANG JIBAO AUTOMATION +1
Monocular image depth information estimation method based on contour acuity
ActiveCN105374039AFully reflect the fuzzy changing trendReflect fuzzy changing trendsImage analysisParallaxTracking model
The invention provides a monocular image depth information estimation method based on contour acuity. The method uses edge contour acuity as a fuzzy information estimation characteristic, and through low-level cue information, depth information extraction is carried out. Edge detection is firstly carried out on the image; edge energy and contour acuity are calculated for the edge in the image, the edge energy and the contour acuity serve as outer energy of the contour, inner energy, contour line characteristic energy and contour line distance energy, of the contour is combined to build a contour tracking model, the minimal value of an energy function is solved, and an image contour is searched; then, depth gradient hypothesis serves as a priori assumed gradient model, depth value filling is carried out on an area with different contour lines, and depth distribution is obtained through calculation; and finally, the original image information and the obtained depth image information are used for optimization on the obtained depth image, and a final disparity map is obtained. As is proved by an experimental result, the depth estimation algorithm is simple, and the depth image for the monocular image can be quickly and accurately estimated.
Owner:LIAONING UNIVERSITY
Dynamic reconstruction method of dual-tracer PET (positron emission tomography) concentration on the basis of H infinity filter
The invention discloses a dynamic reconstruction method of dual-tracer PET (positron emission tomography) concentration on the basis of H infinity filter. The method includes: 1, acquiring coincidence counting; 2, acquiring concentration distribution data of dual-tracer blood through a blood input function; 3, constructing a PET state space equation; 4, estimating PET concentration distribution by the H infinity filter algorithm; and 5, reconstructing corresponding PET concentration distribution data for two tracers. Generally, the component single racer in the experiment of simultaneous injection of dual tracers cannot be separated directly due to the physical characteristic energy singleness of photon; according to the method, while signal components in the two tracers are highly mixed, the dual tracers simultaneously injected are simultaneously reconstructed by acquiring a PET state space model independently guided by a parallel compartment model.
Owner:ZHEJIANG UNIV
X-ray double spectrometer
InactiveCN103698350AFast analysisImprove accuracyMaterial analysis using wave/particle radiationCharacteristic energyX-ray
The invention relates to an X-ray double spectrometer. The double spectrometer comprises an X-ray tube with 4 kw of power, a three-dimensional sample mobile station, a CCD (Charge Coupled Device) camera, a capillary X-ray translucent mirror, a semiconductor X-ray detector and an electronics system I, a plane crystal, an NaI X-ray detector and an electronics system II, a collimation slit I and a collimation slit II, wherein X-ray energy spectrum and wave spectrum share one X-ray tube with 4 kw of high power; the capillary X-ray translucent mirror is fixed in front of the semiconductor X-ray detector and the electronics system I, and is positioned in the inclined upper side of a sample with an angle of 67.5 degrees to align to the sample for collecting X-rays of element characteristic energies excited by microcell elements of the sample; the three-dimensional sample mobile station controlled by a computer moves the sample to implement the line scanning or the surface scanning for analyzing interested microcells in the sample.
Owner:BEIJING NORMAL UNIVERSITY
Method for detecting oblique triangle in digital image
InactiveCN102074011AImprove computing efficiencyImage analysisCharacter and pattern recognitionAlgorithmCharacteristic length
The invention relates to a method for detecting oblique triangle in a digital image. The method comprises the following steps of: acquiring the image and inputting into a computer; computing the gradient of each pixel point; computing an edge graph of the image; computing the directional line of each edge point by using the gradient of each edge point on the edge graph; computing the characteristic length and the characteristic energy of each pixel point in the image to acquire a characteristic length allocation graph and a characteristic energy allocation graph of the image; detecting local maximum points on the characteristic energy allocation graph under the limitation of a threshold value; determining a set of edge points which form a triangle according to each local maximum point and the characteristic length corresponding to the local maximum point; grouping edge points for the triangular edge point set according to gradient directions; verifying and removing unreasonable triangular edge point sets by using grouping numbers; fitting a straight line for each group of edge points of the grouped triangular edge point sets; acquiring the vertex position of the triangle by intersecting straight lines; and finally outputting the vertex position information of the triangle. By the method provided by the invention, the triangle in the image can be exactly detected; and the method is easy to realize, does not need information relative to the given image and has higher computational efficiency compared with the conventional method.
Owner:HENAN POLYTECHNIC UNIV
Simple and rapid extraction method of correlated information of ellipses in digital image
InactiveCN102411784AAccurate detectionExcellent computational complexityImage analysisEllipseCharacteristic energy
The invention relates to a simple and rapid extraction method of correlated information of ellipses in a digital image. The method comprises the following steps that: an image is collected and is input in a computer; an edge graph of the image is calculated; dual points, characteristic lengths and characteristic energy of all points in the image are calculated, so that a characteristic length distribution map and a characteristic energy distribution map are obtained; local maximum value point detection is carried out on the characteristic energy distribution map under a constraint of a threshold; local maximum value points are utilized to determine focuses, long shafts and short shafts of ellipses; verification is carried out on the ellipses and unreasonable ellipses are rejected by utilizing a ration of characteristic energy to a perimeter of an ellipse; edge points of the ellipses are determined according to a constraint that a sum of distances to two focuses of an ellipse is equal to a long shaft; and correlated information of the ellipses is output. According to the invention, the provided method enables ellipse information in an image to be simply and rapidly obtained.
Owner:HENAN POLYTECHNIC UNIV
Pulse shape discrimination method and apparatus for high-sensitivity radioisotope identification with an integrated neutron-gamma radiation detector
InactiveUS7388206B2Measurement with scintillation detectorsMaterial analysis by optical meansCharacteristic energyGamma energy
A method and apparatus for discriminating the types of radiation interacting with an integrated radiation detector having of a pulse-mode operating photosensor which is optically coupled to a gamma-ray scintillator sensor and a neutron scintillator sensor and uses an analog to digital converter (ADC) and a charge to digital converter (QDC) to determine scintillation decay times and classify radiation interactions by radiation type. The pulse processing provides for, among other things, faithful representation of the true energy spectrum of the gamma radiation field and allows for radioisotope identification by searching for the presence of characteristic energy lines in the gamma energy spectrum. The pulse shape discrimination method ensures that the high sensitivity and resolution of the isotope identification function is not affected during operation in mixed neutron-gamma fields.
Owner:MORPHO DETECTION INC
Detecting and extracting method and system characterized by image dimension not transforming
InactiveCN103824076AImprove robustnessImprove accuracyCharacter and pattern recognitionMathematical modelCharacteristic energy
Owner:SUZHOU UNIV
Method for intelligently fusing and detecting distance extension targets based on intrinsic modal characteristic energy
ActiveCN103576131AAdaptableAvoid mismatchWave based measurement systemsMixed noiseCharacteristic energy
The invention discloses a method for intelligently fusing and detecting radar distance extension targets based on intrinsic modal characteristic energy, and belongs to the field of radar signal processing. To overcome the defect that under the situation that the mixed noise background is unknown, an existing distance extension target counting and detecting method is poor in noise environment adaptability, the invention provides the method for intelligently fusing and detecting the distance extension targets based on intrinsic modal characteristic energy differences. According to the method, initialization or supplement is carried out on a noise characteristic database according to the difference effect on echo one-dimensional distance image different frequency intrinsic modal components from the targets and the actual detecting demands, wherein the average energy ratio of the low frequency component to the high frequency component serves as a benchmark; constant false alarm rate characteristics are kept by fusing the characteristic quantity of auxiliary noise data, and the noise database is updated according to the detecting result; statistical modeling does not need to be carried out on the noise background. The method is especially suitable for detecting fixed or slowly-moving weak distance extension targets, and has very strong false-alarm control ability.
Owner:NAVAL AVIATION UNIV
A signal decomposition method based on improved empirical wavelet decomposition
PendingCN109948286APromote decompositionOptimal modal componentCharacter and pattern recognitionSpecial data processing applicationsWavelet decompositionAlgorithm
The invention relates to a signal decomposition method based on improved empirical wavelet decomposition. The method comprises the following steps: carrying out Fourier power spectrum density spectralline solving on a fault signal; selecting a plurality of different threshold values to remove the interference component spectrum values, decomposing the fault signals based on the new spectral line,and screening an optimal threshold value, an optimal decomposition result and a modal component containing rich fault characteristic information by using the fault characteristic energy ratio information. Under the interference background, modal components containing rich fault feature information can still be effectively and optimally decomposed, interference is eliminated, modal aliasing and excessive decomposition phenomena are restrained, an ideal decomposition result is obtained, the defects of EWT are overcome, and the theoretical method of modal decomposition is enriched.
Owner:NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
Method for confirming yield through spectrum unfolding analysis of stratum element logging instrument
InactiveCN104239710ADespectral influenceEarth material testingSpecial data processing applicationsCharacteristic energyResidual sum of squares
The invention provides a method for confirming yield through spectrum unfolding analysis of a stratum element logging instrument. The method comprises the following steps of confirming a segment area number n and left and right boundaries kn and kn+1 of each segment area; calculating a standard trap spectrum normalization response matrix A; calculating a total numerical value ci of a spectrum to be unfolded in each segment area; calculating an opposite angle weighting matrix W; calculating a weighted least square method spectrum unfolding to obtain the yield yj; utilizing a mean value delta 2 of residual sum of squares to judge an imitative effect. The invention adopts a segment clamping manner spectrum unfolding method. The segment clamping manner is characterized by selectively selecting a channel area, in which an characteristic energy spectrum of an element is located, to unfold the spectrum. Through MC numerical simulation, the method has no large effect on spectrum unfolding.
Owner:XIAN AOHUA ELECTRONICS INSTR
Radioactive source positioning reconstruction method based on multi-energy system response matrix
ActiveCN110599562AQuality improvementImprove fidelityImage enhancementReconstruction from projectionSingle point sourceEnergy window
The invention discloses a radioactive source positioning reconstruction method based on a multi-energy system response matrix. The method comprises the following steps of dividing an energy range detected by a coding aperture imaging system into mutiple energy windows; selecting a characteristic energy value under each energy window; acquiring a system response matrix under a specific energy valueunder each energy window through simulation; during actual measurement, counting measured data according to the energy windows to finally form a plurality of groups of projection data corresponding to the energy windows, then adopting a maximum likelihood expectation maximization algorithm to reconstruct reconstructed images of the energy windows, and adding the reconstructed images under all theenergy windows a to obtain a final reconstructed image. According to the invention, a more accurate system response model is created. The method is suitable for a single-point source, a plurality ofsingle-point sources with the same energy, a plurality of single-point sources with different energy and a shape source, the complex radiation scene can be accurately reconstructed, a reconstructed image with high quality and high fidelity can be provided, and the method is high in transportability and suitable for equipment with different geometric structures and different materials.
Owner:SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING +1
Quality control calibration method and system for single-photon emission tomography equipment
ActiveCN107390253ANo special space requirementsNo special space requirements requiredX/gamma/cosmic radiation measurmentTime informationSource type
The invention discloses a quality control calibration method and system for single-photon emission tomography equipment. The method comprises a step of placing a uniform surface source model with the injection of target nuclide at the front surface of a single-photon emission tomography equipment probe with a collimator, a step of collecting original data of output digital signal amplitude and time information of each independent channel, a step of obtaining a gain pre-correction coefficient according to a method of comparison a reference and correcting the output original data of each channel, a step of collecting corresponding data according to needs to complete the gain correction and energy correction calibration operations of a detected, and a step of realizing probe energy resolution and scale factor quality control calibration through introducing one or more characteristic energy peaks of a collimator or detector composition material on the basis of not increasing radiation source types. According to the method and the system, equipment probe pendulum does not need to be in a special calibration mode, special space requirements are not needed, and a technical support is provided for the fault diagnosis of remote equipment.
Owner:BEIJING NOVEL MEDICAL EQUIP LTD
Diesel engine exhaust gas purifier diagnosing method based on sound wave signal HHT marginal spectrum
InactiveCN103590878AImprove reliabilityEffective diagnosisInternal combustion piston enginesExhaust treatment electric controlCharacteristic energyElectrical control
The invention relates to a diesel engine exhaust gas purifier diagnosing method based on a sound wave signal HHT marginal spectrum and belongs to a diagnosing technique of a diesel engine exhaust gas aftertreatment system. In a diesel engine operation process, a sound wave signal collector (4) can send sound wave signals x(t) collected by the outlet end of a purifier to a sound wave signal processing unit (9), HHT marginal spectrum analysis is carried out on the signals, the signals are processed to obtain sound wave HHT marginal spectrum feature signals, and the sound wave HHT marginal spectrum feature signals comprise tested feature frequency and tested feature energy. An electrical control unit (5) can inquire the sound wave HHT marginal spectrum feature signals MAP to find out the sound wave HHT marginal spectrum feature signals under the corresponding work condition according to the rotation speed signals and the torque signals of a current diesel engine, and the sound wave HHT marginal spectrum feature signals comprise calibrated feature frequency and calibrated feature energy. The electrical control unit (5) can compare four parameters to determine whether the exhaust gas purifier works normally. The method can accurately identify plug conditions and give out regeneration time and can accurately identify breakage, especially micro breakage, of the exhaust gas purifier.
Owner:BEIJING JIAOTONG UNIV
Method and device for detecting thickness of film
The invention discloses a method and device for detecting the thickness of a film. The method comprises the following steps that electron beams with the same energy and the same strength are projectedto a reference sample and a to-be-detected sample, and the samples are excited to emit X-ray fluorescence; the strength of X-ray fluorescence characteristic energy corresponding to target elements inthe two samples is collected; the thickness of the film is calculated according to a relational expression between the ratio of the two pieces of strength and the thickness of the film; when a blanksubstrate is adopted as the reference sample, the strength of X-ray fluorescence characteristic energy corresponding to a target element in the substrate is collected; and when a block standard samplemade of the same material as the film is adopted as the reference sample, the strength of X-ray fluorescence characteristic energy corresponding to a target element in the substrate is collected. Themethod and device for detecting the thickness of the film adapt to measurement of the thickness within the large range of 0.1 nm to 100 nm by adjusting the energy and the angles of the incident electron beams.
Owner:ZHEJIANG SHANGFANG ELECTRONICS EQUIP +1
Distance distribution-based square detecting method in digital image
InactiveCN102096820ASimple methodEasy to implementImage analysisCharacter and pattern recognitionPattern recognitionCharacteristic energy
The invention relates to a distance distribution-based square detecting method in a digital image, which comprises the steps: acquiring an image, and inputting the acquired image into a computer; computing the gradient of each pixel point by a gaussian gradient template; computing an edge graph of the image by a Canny edge detection operator; computing a directional line of each edge point by the gradient of each edge point on the edge graph; computing the characteristic length and the characteristic energy of each pixel point in the image to obtain a characteristic length distribution map and a characteristic energy distribution map of the image; under the constraint of a threshold value, detecting a plurality of local maximum value points on the characteristic energy distribution map; confirming a plurality of edge point sets of one square by each local maximum value point and the characteristic length of each local maximum value point; checking and getting rid of the unreasonable edge point sets of the square by the direction information of the edge points; and outputting the edge point sets which form the square. The method can be used for exactly detecting the center and the edge of the square in the image. Compared with the existing method, the method is simpler and easier to realize, and higher in computation efficiency.
Owner:HENAN POLYTECHNIC UNIV
Electronic Photosensitive Body and Manufacturing Method for Same, as well as Image Forming Apparatus
ActiveUS20100224877A1Improve productivityHigh film forming ratePhotosensitive materialsSolid-state devicesCharacteristic energySingle crystal
Disclosed is an electrophotographic photoreceptor which comprises a base material and a photoconductive layer. The photoconductive layer is formed on the base material, and comprises a non-single-crystal material mainly composed of silicon. In the photoconductive layer, with regard to a characteristic energy E (eV) which has the relationship with a light absorption coefficient α (cm−1) represented by the following formula (1), the characteristic energy E1 (eV) for an exposure wavelength in larger than the characteristic energy E2 (eV) for a neutralization wavelength. [Formula (1) α=C exp(hω / E) C: a constant hω: a photon energy h: a rationalized Planck's ω: the number of frequency
Owner:KYOCERA CORP
Precession drilling-type activated carbon package gamma spectrum radon measurement method
InactiveCN106932812ASimplify cumbersome operationsImprove reliabilityX-ray spectral distribution measurementWithdrawing sample devicesCharacteristic energyData treatment
The invention belongs to the field of uranium exploration, and particularly relates to a precession drilling-type activated carbon package gamma spectrum radon measurement method. The method comprises the following steps: a precession-type drill bit, an activated carbon package, a self-sealing transparent plastic bag and a gauze bag are customized; a radon decay daughter region of interest and a thorium decay daughter region of interest on a ground gamma spectrometer are set; the overburden ratio of the ground gamma spectrometer and a radon concentration conversion factor are determined; the activated carbon package is packaged; field data are acquired; and the data are processed and corrected. The method can effectively capture radon in a gas, liquid or particle state in a geogas, a radon decay daughter <214>Bi characteristic energy peak net counting rate is measured, the radon concentration is converted after correction and processing, the tedious operation of the conventional activated carbon radon measurement method is simplified significantly, the radon measurement economic cost is greatly reduced and the radon measurement data reliability is effectively improved.
Owner:BEIJING RES INST OF URANIUM GEOLOGY
Lie detection method base on neurotransmitter
InactiveCN1757377AImprove accuracyReliable methodSurgeryVaccination/ovulation diagnosticsCharacteristic energyMeasuring instrument
A lie detecting method used for public security department includes such steps as giving different questions to the person to be detected, answering the questions by the person while using the reflecting method of two red light beams and two infrared light beams to respectively obtain the 8 data signals about the concentration variations of cerebral oxyhemoglobin on 4 acupoints in left and right frontal and temporal regions of the person, inputting them to computer, processing said data signals by calculation, configuring the recognizing parameters based on the characteristic energy value of cerebral nerve mediator, and judging if the person tells a lie according to a critical reference value.
Owner:SUZHOU UNIV
Method for locating grounding fault of power distribution network based on multi-sample frequency wavelet character energy conversion
ActiveCN106646138AHigh precisionFault location by conductor typesInformation technology support systemAlgorithmOriginal data
The invention relates to a method for locating a grounding fault of a power distribution network based on multi-sample frequency wavelet character energy conversion. The method comprises the following steps of: adopting the time sequences in equal length and at same starting point for performing wavelet conversion on the original data of the sampling values in different sampling frequencies; converting the acquired original character energy values in all the time sequences onto the minimal sampling frequency; and comparing the magnitude of the relative character energy in all the time sequences in a same frequency, thereby realizing the grounding detection and the fault locating. According to the method, the wavelet conversion is adopted for extracting the fault character energy, converting the fault recording signals in different sampling frequencies into the relative character energy in the minimal sampling frequency and then judging the existence of the grounding fault according to the relative character energy and confirming the beginning and ending of the fault.
Owner:BEIJING SIFANG JIBAO AUTOMATION +1
Method for detecting liquid height in stirred tank reactor
InactiveCN101532865AEasy to useDoes not affect movementMachines/enginesLevel indicatorsLiquid heightAcoustic emission
The invention discloses a method for detecting the liquid height in a stirred tank reactor, including the following steps: (1)arranging an acoustic emission signal received device at the outer wall of the reactor; (2)receiving the acoustic emission signal in the stirred tank reactor; (3)selecting the average energy E of the acoustic emission signal at the wall of the stirred tank reactor as the characteristic variables; (4) judging the liquid height in the stirred tank reactor by the characteristic energy E of the acoustic emission signal stirred tank al at the wall of the stirred tank reactor according to the forecast model or standard curve of the predetermined characteristic variables E and the liquid height in the reactor. The acoustic emission signal received device for the method is non-inserted, and has convenient installation, safety and environment protection, sensitive response, accurate measure, wide application range and the like.
Owner:ZHEJIANG UNIV
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