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39results about How to "Reduce testing requirements" patented technology
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Programmable matrix array with chalcogenide material
ActiveUS20060171194A1High impedanceReduce leakageSolid-state devicesDigital storageCross connectionProgrammable logic device
A chalcongenide material is proposed for programming the cross-connect transistor coupling interconnect lines of an electrically programmable matrix array. Leakage may be reduced by optionally placing a thin insulating breakdown layer in series with the select device or a phase change material. The matrix array may be used in a programmable logic device.
Owner:OVONYX MEMORY TECH LLC
Superscalar data processing apparatus and method
ActiveUS20070143581A1Reduces hazard detection requirementReduce bottlenecksGeneral purpose stored program computerSpecific program execution arrangementsTerm memoryIssue logic
A superscalar data processing apparatus and method are provided for processing operations, the apparatus having a plurality of execution threads and each execution thread being operable to process a sequence of operations including at least one memory access operation. The superscalar data processing apparatus comprises a plurality of execution pipelines for executing the operations, and issue logic for allocating each operation to one of the execution pipelines for execution by that execution pipeline. At least two of the execution pipelines are memory access capable pipelines which can execute memory access operations, and each memory access capable pipeline is associated with a subset of the plurality of execution threads. The issue logic is arranged, for each execution thread, to allocate any memory access operations of that execution thread to an associated memory access capable pipeline. Such a system has been found to provide an effective balance between increasing the efficiency of operation of the superscalar data processing apparatus when employing multiple execution threads whilst also alleviating the need for complex hardware to handle hazard detection.
Owner:ARM LTD
On-line detection device of particle multiple characters in fluidized bed granulation process
InactiveCN106546516AEasy transferImprove monitoring capabilitiesParticle size analysisWater contentParticle density
The invention discloses an on-line detection device of particle multiple characters in fluidized bed granulation process. The on-line detection device is arranged outside a fluidized bed reaction chamber, and is provided with a sealed shell, a sample collecting mechanism used for sampling from the reaction chamber, a visual detection unit which is arranged outside the sealed shell and is used for shooting the falling process of an obtained sample outside the sealed shell, a water detection unit, and a density detection unit used for detecting particle density; the visual detection unit comprises a camera and a measuring cylinder; the measuring cylinder is used for receiving samples falling from the sample collecting mechanism; the camera is used for shooting the process of the samples fall into the measuring cylinder, overflow of the samples out from the measuring cylinder, and sample accumulation on the top of the measuring cylinder; and an image processing system is used for obtaining particle size information from sample falling images and obtaining the angle of repose from sample accumulating images. The on-line detection device can be used for on-line detection of particle size, particle size distribution, water content, the angle of repose, bulk density, tap density, void ratio, and Hausner ratio of particles in fluidized bed granulation process.
Owner:ZHEJIANG UNIV
Pharmaceutical fluidized bed particle diameter distribution online detection device based on differential pressure sampling
InactiveCN105158127AImprove the detection environmentReduced detection speed and requirement for additional cleaning accessoriesParticle size analysisEngineeringFluidized bed
A pharmaceutical fluidized bed particle diameter distribution online detection device based on differential pressure sampling is installed outside a fluidized bed reaction chamber. The detection device is provided with a sampling mechanism, a recycling mechanism and a detection mechanism. The sampling mechanism is provided with a sampling sleeve, a sampling piston and a sampling pushing piece. The fluidized bed reaction chamber is provided with a sampling channel communicated with an inner cavity of the sampling sleeve. The sampling piston is composed of a piston rod and a plug, the piston rod is in sealing fit with the sampling sleeve and is connected with the sampling pushing piece, and the plug penetrates through the sampling channel to be located in the fluidized bed reaction chamber. When the sampling pushing piece is located at a first limit position, the plug closes the sampling channel; when the sampling pushing piece is located at a second limit position, the plug opens the sampling channel. The sampling mechanism inputs samples into the detection mechanism through a deceleration guide tube. The detection device has the advantages that real-time particle diameter detection is led out of the fluidized bed reaction chamber, so that the detection environment is improved, and the requirements for the detection speed and additional accessory cleaning of detection equipment are lowered.
Owner:ZHEJIANG UNIV
Orientated surface enhanced Raman spectrum detection method based on high-activity site
ActiveCN106885797AWide range of suitable concentrationsReduce testing requirementsRaman scatteringSurface-enhanced Raman spectroscopyHigh activity
The invention discloses an orientated surface-enhanced Raman spectrum detection method based on a high-activity site. The orientated surface enhanced Raman spectrum detection method comprises the following steps: selecting a clean silicon wafer or glass sheet as an SERS (surface-enhanced Raman scattering) detection chip for later use; synthesizing silver nano-sol with SERS activity and a grain diameter of 10nm to 60nm; after centrifuging, concentrating according to a ratio ranging from (1 to 100) to (1 to 400); dissolving an object to be detected into a solution; sequentially dropwise adding a sodium chloride solution, the solution of the object to be detected and the concentrated silver nano-sol into a substrate treated by the step (1) and mixing; storing a mixture under constant-temperature and constant-moisture conditions and drying to form a film; carrying out SERS detection on a film layer sample on the substrate by utilizing a microscopic confocal Raman spectrometer. The orientated surface enhanced Raman spectrum detection method is used for detecting under a dry state; Raman laser is more easily focused and is not easily interfered by air movement and the like; a sodium chloride crystal is visible under an optical microscope, so that a detection range can be effectively locked; a sample can be repeatedly detected for a plurality of times.
Owner:安徽中科赛飞尔科技有限公司
Apparatus for simple detection of infrared imaging system performance parameter
InactiveCN101504317AThe detection environment and detection space requirements are reducedGuaranteed temperature stabilityRadiation pyrometryOptical pathTesting equipment
The invention relates to a device for simply and conveniently detecting performance parameters of an infrared imaging system, which comprises an infrared lens, a hollowed metal target, a temperature control chip, a temperature sensor and a shell, and is characterized in that the shell is a heat-insulated metal sleeve; the temperature control chip is positioned at one end of the heat-insulated metal sleeve, and the infrared lens is positioned at the other end of the heat-insulated metal sleeve; the hollowed metal target is arranged near the focal surface of the infrared lens in the heat-insulated metal sleeve through a target supporting device; the temperature sensor is arranged on the hollowed metal target; and a hollowed part of the hollowed metal target is positioned on a light path between the temperature control chip and the infrared lens. The device utilizes the imaging principle to simulate a distant target, meets the requirement of the operating distance of a thermal infrared imager, guarantees the temperature stability due to the shell with good heat-insulating property, reduces the environmental requirements under the condition of detection, effectively eliminates external interferences such as air circulation, heat conduction, heat radiation and the like, and reduces the space size of the thermal imager under the condition of detection. Moreover, the whole detection device has small volume and is convenient to operate and quick to detect.
Owner:NAVAL UNIV OF ENG PLA
Particle diameter distribution online detecting device of granulating fluidized bed
InactiveCN105158128AImprove the detection environmentReduced detection speed and requirement for additional cleaning accessoriesParticle size analysisCollection sampleTesting equipment
Provided is a particle diameter distribution online detecting device of a granulating fluidized bed. The detecting device is installed outside a reaction chamber of the fluidized bed and comprises a sealed shell. A sampling mechanism capable of extending into the reaction chamber of the fluidized bed to take out samples is arranged in the shell. The sampling mechanism is located at the sampling station when extending into the reaction chamber of the fluidized bed and located at the dispersion station when getting out of the reaction chamber of the fluidized bed to make the samples fall. The sampling mechanism reciprocates between the sampling station and the dispersion station and is in seal fit with the chamber wall of the reaction chamber of the fluidized bed. A visual detecting mechanism is arranged in the shell, and comprises a light source and a camera for shooting the sample falling process. A recovery mechanism for collecting the samples is arranged in the shell. The particle diameter distribution online detecting device has the advantages that real-time detection of particle diameter is completed outside the reaction chamber of the fluidized bed, the detection environment is improved, the detection speed of the detection device is increased, and the requirement for additionally cleaning accessories is lowered.
Owner:ZHEJIANG UNIV
Measurement device and measurement method for transparent medium refractive index
ActiveCN102998284AReduce testing requirementsSimple structurePhase-affecting property measurementsOptical pathStandard samples
Owner:TSINGHUA UNIV
Method for discriminating middle leaves and upper leaves of flue-cured tobaccos
ActiveCN107677619AEasy to detectLow detection environmentColor/spectral properties measurementsEngineeringFlue
The invention relates to a method for discriminating middle leaves and upper leaves of flue-cured tobaccos. The discriminating method includes a step 1) of establishing a model for discriminating front and back whiteness index differences of the tobaccos and the middle leaves and upper leaves; a step 2) of detecting front whiteness indexes and back whiteness indexes of to-be-discriminated tobaccos, and substituting the front and back whiteness index differences into the discriminating model determined in the step 1), to determine tobacco parts. According to the method for discriminating the middle leaves and the upper leaves of the flue-cured tobaccos, the front and back whiteness index differences of the tobaccos and the tobacco parts have a very strong correlativity. Through a modeling method, appearance difference characteristics of the upper leaves and the middle leaves can be well reflected, and thus the established discriminating model can be utilized to effectively identify thetobacco parts. The front and back whiteness index differences can be detected conveniently through a color photometer, the detection process is simple, the requirements for detection environments andsamples are low, and the method has very good application prospects in the precise evaluation of the tobacco quality and automatic classification of tobacco parts.
Owner:ZHENGZHOU TOBACCO RES INST OF CNTC
Allocation of memory access operations to memory access capable pipelines in a superscalar data processing apparatus and method having a plurality of execution threads
ActiveUS7734897B2Reduce testing requirementsMinimum performanceGeneral purpose stored program computerSpecific program execution arrangementsParallel computingIssue logic
A superscalar data processing apparatus and method are provided for processing operations, the apparatus having a plurality of execution threads and each execution thread being operable to process a sequence of operations including at least one memory access operation. The superscalar data processing apparatus comprises a plurality of execution pipelines for executing the operations, and issue logic for allocating each operation to one of the execution pipelines for execution by that execution pipeline. At least two of the execution pipelines are memory access capable pipelines which can execute memory access operations, and each memory access capable pipeline is associated with a subset of the plurality of execution threads. The issue logic is arranged, for each execution thread, to allocate any memory access operations of that execution thread to an associated memory access capable pipeline. Such a system has been found to provide an effective balance between increasing the efficiency of operation of the superscalar data processing apparatus when employing multiple execution threads whilst also alleviating the need for complex hardware to handle hazard detection.
Owner:ARM LTD
Total polyphenol content detection method
InactiveCN106124428AShorten detection timeReduce testing requirementsPreparing sample for investigationColor/spectral properties measurementsGallic acid esterAbsorbance
A method for detecting the content of total polyphenols, belonging to the technical field of food, by making the polyphenolic compounds in the sample carry out quantitative oxidation reaction with tungstomolybdic acid in Folin's phenol reagent in an alkaline solution under dark conditions, and the tungsten Molybdic acid itself is reduced to generate a blue compound, and the depth of the blue compound is proportional to the number of phenolic groups. The absorbance of the reacted sample is measured, and the total amount of molybdenum in the sample is calculated according to the gallic acid standard curve. Phenol content. The detection method of the total polyphenol content of the present invention uses a spectrophotometer to measure the absorbance, calculates according to the standard curve of gallic acid, shortens the detection time, lowers the detection requirements, and solves the problems of high instrument requirements and complicated sample processing of other detection methods.
Owner:安徽平唐微食疗科技有限公司
Anti-counterfeiting mark, marking device, anti-counterfeiting recognition method and target object marking method
The invention discloses an anti-counterfeiting mark, a marking device, an anti-counterfeiting recognition method and a target object marking method. According to the invention, a plurality of photochromic particles are covered by a mark carrier, and the mark carrier can take effects of a lens, so that a luminescence area is increased, and light, which is generated through a photochromic effect, can be detected out more easily; meanwhile, the mark carrier, which is quite tiny, can be conveniently mixed with a target object, which is to be marked and is not represented in a fixed shape, or target object raw materials or mixed with transparent liquid and then sprayed to or coated on the surface of the target object, so that the target object is marked in a hidden mode, and subsequently, detection requirement and difficulty are reduced. Moreover, the anti-counterfeiting marks, when coated on the surface of the target object or when formed in the target object, are distributed in a random mode; and an anti-counterfeiting mark image, which is formed by random distribution, can be used for uniquely marking the target object in a hidden mode as a 'fingerprint' of the marking device, and detection and recognition can be conveniently implemented.
Owner:东莞亟米科技有限公司
Method for detecting glycemic index
The invention discloses a method for detecting a glycemic index, and the method comprises the following steps: detecting moisture, ash, fat and protein of a food sample to obtain the amount of the food sample containing 1g of carbohydrate; simulating a food sample of 1g of carbohydrate digested by a digestive system in a human body, performing sampling detection at different digestion time points,calculating the starch consumption rate and the blood glucose value, and then obtaining the blood glucose generation index through a theoretical calculation formula. According to the method for detecting the glycemic index, the human digestion is simulated in vitro, so the detection time is shortened, the detection requirement is reduced, and the problem that a large amount of manpower and material resources are consumed by in-vivo detection is solved.
Owner:安徽春谷食品健康技术研究有限公司
Remote diabetes intelligent diagnosis system based on electronic nose for detecting respiratory gas
InactiveCN108693353AEasy to detectImprove diagnostic accuracyDisease diagnosisBiological testingWireless transmissionComputer terminal
The invention relates to a remote diabetes intelligent diagnosis system based on electronic nose for detecting respiratory gas, which includes: an electronic nose detection module, a wireless transmission module, an intelligent mobile terminal module, and a machine learning application module deployed in a cloud platform. The system can remotely analyze expiration signal, collected by the electronic nose, of human body by using the machine learning application deployed in the cloud platform in order to obtain a diagnosis result, which is then sent to and displayed on the intelligent mobile terminal module. The electronic nose detection module can acquire concentration information of sensitive components in the respiratory gas from a user and then sends a responding signal to the intelligent mobile terminal module through the wireless transmission module; then the user uploads the data to a cloud server for processing the data; and the machine learning application deployed in the cloudplatform can quickly give out the diagnosis result, which is displayed on the intelligent mobile terminal module. The intelligent diagnosis system achieves rapid noninvasive diagnosis of diabetes, hasthe potential of supplying remote medical service, reduces use threshold of users, and may be applied to large-scale screening and daily detection on the diabetes.
Owner:CHONGQING UNIV
Helmet detection method and device based on improved YOLOv5s, electronic equipment and storage medium
ActiveCN112966810AImplement the buildReduce testing requirementsInternal combustion piston enginesCharacter and pattern recognitionSimulationArtificial intelligence
The invention relates to a helmet detection method and device based on improved YOLOv5s, electronic equipment and a storage medium. The method comprises the following steps: constructing a YOLOv5s-Light target detection framework; using a target image training set to train the YOLOv5s-Light target detection framework to obtain a YOLOv5s-Light target detection training framework; inputting an image set to be detected into the YOLOv5s-Light target detection training framework to obtain a target detection set; and detecting the target detection set by using a riding detection algorithm to obtain a target detection result. According to the method, firstly, a YOLOv5s-Light target detection framework is constructed, the YOLOv5s-Light target detection framework greatly reduces the network parameter quantity on the basis of the YOLOv5s target detection framework, the construction of a lightweight model is realized, then the YOLOv5s-Light target detection framework is utilized to obtain a target detection set, and finally, the target detection set is detected through a riding detection algorithm to obtain a target detection result, so that a required target can be effectively detected, unnecessary targets can be filtered, and the detection requirement is low.
Owner:NORTHWEST UNIV(CN)
Method for detecting miRNA-21 by blood glucose meter based on dnazyme and sucrase
PendingCN110241181AHigh detection sensitivityStrong specific surface areaMicrobiological testing/measurementMagnetic beadBlood glucose meters
The invention discloses a method for detecting miRNA-21 by a blood glucose meter based on dnazyme and sucrase. The method comprises the following steps: coupling a substrate chain and a dnazyme chain silenced by a sway chain on a magnetic bead, allowing target miRNA to be hybridized and combined with the sway chain after the target miRNA appears, and separating from the dnazyme chain so as to activate the dnazyme to cut the substrate chain; and allowing the released sucrase to hydrolyze sucrose to glucose, and acquiring the output signal by the detection of a blood glucose meter. According to the method, the detection signal of the miRNA is subjected to double enzyme amplification by introducing the dnazyme and the sucrase, so that the detection sensitivity is improved, a linear relation exists in the range of 100-1000fM, the detection limit is 68.08fM, and the method has the advantages of simplicity, convenience, rapidness, sensitivity, high efficiency, low cost and the like.
Owner:CHINA PHARM UNIV
Combined type detection and diagnosis color ultrasound system and detection method for ultrasonography department
InactiveCN110522468AReduce the number of signal bitsQuality improvementInfrasonic diagnosticsSonic diagnosticsPattern recognitionDisplay device
The invention belongs to the technical field of color ultrasound, and discloses a combined type detection and diagnosis color ultrasound system and detection method for ultrasonography department. Thedetection method comprises the steps of collecting ultrasound image data of a patient through an ultrasonic probe; rectifying color ultrasound diagnosis equipment through a rectifying procedure; performing color coding on blood flow signals through a coding algorithm, and overlaying the blood flow signals after being subjected to color coding on a two-dimensional image; performing optimization treatment on the collected ultrasound images through an optimizing procedure; extracting ultrasound image characteristic elements through an extraction procedure; performing diagnosis and analysis on the extracted characteristics through a diagnosis procedure; and displaying the ultrasound image data after being subjected to color coding through a displayer. Through a rectifying module, a lot of abuses of detecting equipment which is used at present can be effectively overcome, the detection time can be effectively shortened, the detection demands can be reduced, the detection items can be developed, and the mobility is improved. Besides, through an image optimization module, the signal digits of the ultrasound images can be reduced to be adapted to displaying demands of the displayer, the infidelity of image treatment is small, and ultrasound images excellent in quality can be obtained.
Owner:聊城市光明医院
Measurement device and measurement method for transparent medium refractive index
ActiveCN102998284BReduce testing requirementsSimple structurePhase-affecting property measurementsWedge angleResearch Object
Owner:TSINGHUA UNIV
Refractive index change sensing device and measuring method
ActiveCN113390441ARealize measurementReduce testing requirementsConverting sensor output opticallyRefractive indexCarrier signal
The invention relates to a refractive index change sensing device and a measuring method, and belongs to the field of optical fiber sensing. The device comprises a laser, a carrier suppression double-sideband modulation module, a microwave source, an optical beam splitter, a refractive index sensitive module, a frequency shifter, an optical coupler, a photoelectric detector and a signal acquisition and data processing module. The laser, the carrier suppression double-sideband modulation module, the optical beam splitter, the refractive index sensitive module, the frequency shifter, the optical coupler and the photoelectric detector are sequentially and optically connected; the carrier suppression double-sideband modulation module and the microwave source are in circuit connection in sequence; and the photoelectric detector and the signal acquisition and data processing module are in circuit connection in sequence. According to the invention, the defects that the spectral analysis precision is low in the existing optical fiber sensing detection technology and a broadband range detection and processing system is needed in the traditional microwave photon sensing detection are overcome, and the method has the advantages of high measurement precision, real-time measurement, need of a low-frequency detection and processing system only and the like.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Method and system for identifying obstacle on track
ActiveCN107941910AThe identification method is simpleUndisturbedAnalysing solids using sonic/ultrasonic/infrasonic wavesComputer visionArtificial intelligence
The invention discloses a method for identifying an obstacle on a track. The method comprises the following steps: obtaining the vibration signal of a train; and qualitatively identifying impact according to the vibration signal to determine whether the obstacle exists on the track or not. The obstacle is identified in a contact manner, so the identification method is simple, the identification isnot affected by the size and the color of the obstacle, and is also not affected by illumination and the bent and straight lines of the track, thereby the method has the advantages of low detection requirements, wide application range and accurate identification result. The invention also discloses a system for identifying the obstacle on the track. The system has the same advantages with the method.
Owner:TANGZHI SCI & TECH HUNAN DEV CO LTD
Correction method for color doppler ultrasonic diagnostic instrument detection device
InactiveCN104997532ASpeed up the flowImprove stabilityBlood flow measurement devicesInfrasonic diagnosticsColor dopplerLiquid-crystal display
The invention discloses a correction method for a color doppler ultrasonic diagnostic instrument detection device. The correction method comprises that the detection device drives artificial blood to flow in a circulatory system at a certain speed through a circular pump, when the artificial blood passes through a flowmeter, the electronic flowmeter feeds acquired flow velocity information back to a control system, during the whole flow velocity adjusting process, the control system records instantaneous values in a curve, and a liquid crystal display screen displays the curve, when the flow velocity in the whole closed circulation system is stabilized to be preset values, the artificial blood flows stably for a long time in an artificial membrane at a certain speed, and the color doppler ultrasonic diagnostic instrument can be detected at the moment.
Owner:中国人民解放军总后勤部卫生部药品仪器检验所
Battery housing
ActiveUS20210078413A1Good installation space utilizationReduce testing requirementsBattery isolationCell lids/coversElectrical batteryElectric cars
The present invention relates to a battery housing for an electrically powered vehicle, in particular a motor vehicle, comprising a battery accommodation space made of a first flat steel product and a housing frame made of a second flat steel product, where the two flat steel products differ in terms of at least one of the properties yield strength (Rp0.2), tensile strength (RM) or elongation (A50).
Owner:THYSSENKRUPP STEEL EURO AG +1
Quick clam species distinguishing method
ActiveCN104697997ASimple methodEasy to operateMaterial analysis by optical meansSiphonMicroscopic observation
A quick clam species distinguishing method is characterized by comprising the following steps of 1 performing clam vivisection, 2 producing an oral siphon peristomial tentacle sheet, 3 performing microscopic observation, and 4 confirming species, namely confirming the clam species according to morphological characteristics of oral siphon peristomial tentacles. Compared with the prior art, The quick clam species distinguishing method has the advantages that the quick clam species distinguishing method utilizes oral siphon peristomial tentacle microscopic observation, is accurate in detection, low in technological difficulty and simple in operation steps and enables a result to be visual and accurate, and especially the total experimental consumption of the quick clam species distinguishing method is obviously lower than those of a traditional chondriosome (COI) gene sequencing method and an AFLP labeling method.
Owner:ZHEJIANG WANLI UNIV
Heterogeneous solution gas content detection device and detection method
PendingCN111965253AHigh sensitivityReduce testing requirementsAnalysing fluids using sonic/ultrasonic/infrasonic wavesProcessing detected response signalPhysicsChemistry
The invention discloses a heterogeneous solution gas content detection device and detection method. The detection device is fixedly connected with an ultrasonic transducer on the upper surface of a quartz crystal wedge block to form an ultrasonic probe, and the ultrasonic transducer is sequentially connected with a pulse generating and receiving instrument and a data signal processing instrument through wires. The ultrasonic feedback is not influenced by physical factors such as bubble conductivity, shape and speed, so that the detection sensitivity is improved. The non-invasive detection of the gas content of the solution is realized, the detection requirement is greatly reduced, and the convenience is improved. And in the detection process, the multi-point in-situ detection of the solution can be realized. And the comprehensiveness and the accuracy of a detection result are improved. And an amplitude ratio calculation method is adopted to judge the gas content, so that the quantification degree of the ultrasonic detection gas content is improved. The detection device is low in detection cost, light in equipment, safe to operate, high in penetrating power, small in influence of reaction media and capable of achieving in-situ detection. Defects and deficiencies of common gas content detection means can be effectively avoided.
Owner:TIANJIN POLYTECHNIC UNIV
A method and system for identifying obstacles on track
ActiveCN107941910BThe identification method is simpleUndisturbedAnalysing solids using sonic/ultrasonic/infrasonic wavesPattern recognitionTrackway
The invention discloses a method for identifying an obstacle on a track. The method comprises the following steps: obtaining the vibration signal of a train; and qualitatively identifying impact according to the vibration signal to determine whether the obstacle exists on the track or not. The obstacle is identified in a contact manner, so the identification method is simple, the identification isnot affected by the size and the color of the obstacle, and is also not affected by illumination and the bent and straight lines of the track, thereby the method has the advantages of low detection requirements, wide application range and accurate identification result. The invention also discloses a system for identifying the obstacle on the track. The system has the same advantages with the method.
Owner:TANGZHI SCI & TECH HUNAN DEV CO LTD
Oscillation source localization method, device, terminal and readable storage medium for forced oscillation
ActiveCN108574290BHigh positioning accuracyReduce testing requirementsPower oscillations reduction/preventionMahalanobis distanceEngineering
The invention provides an oscillation source positioning method and device of a forced oscillation, a terminal and a readable storage medium. The method comprises the steps that the angle measurementdata and the active power measurement data of a generator rotor are acquired; according to the angle measurement data and the active power measurement data, the Mahalanobis distance measurement data of a multivariate time series are acquired; and the position of the oscillation source of the forced oscillation is determined according to the Mahalanobis distance measurement data. According to the method, the multivariate time series of the angle measurement data and the active power measurement data is established; dynamic time warping is carried out on the multivariate time series; the Mahalanobis distance measurement data of the multivariate time series of two kinds of measurement data are acquired; finally the position of the oscillation source is determined according to the Mahalanobisdistance measurement data; the detection requirement for start-up time is reduced; the actual operability of the algorithm is improved; and the accuracy of oscillation source positioning is improved.
Owner:STATE GRID CORP OF CHINA +2
Power health assessment method and device
ActiveCN110222399ADetect and evaluate health status in real timeReduce testing requirementsData processing applicationsDesign optimisation/simulationComputer scienceHealth assessment
The invention provides a power supply health assessment method and device, and the method comprises the steps: collecting the input data and output data of a power supply, carrying out the calculationaccording to the input data and the output data, obtaining the conversion rate of the power supply, and obtaining the preset health degree-according to the preset health degree-. And calculating thehealth degree of the power supply according to the conversion rate function and the conversion rate. The method has low requirements on parameter detection, can be used for various power supplies, andfurther can detect and evaluate the health state of the power supplies in real time when the power supplies work.
Owner:CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST
Microwave photon frequency measuring device and method based on fixed low-frequency detection
PendingCN113391136ARealize measurementReduce testing requirementsFrequency measurement arrangementElectromagentic field characteristicsCarrier signalHemt circuits
The invention relates to a microwave photon frequency measuring device and method based on fixed low-frequency detection, and belongs to the technical field of photoelectronics. The device comprises a laser, a carrier suppression double-sideband modulation module, an optical beam splitter, a dispersive medium, a frequency shifter, an optical coupler, a photoelectric detector and a signal acquisition and data processing module. The laser, the carrier suppression double-sideband modulation module, the optical beam splitter, the dispersive medium, the frequency shifter, the optical coupler (6) and the photoelectric detector are sequentially and optically connected; and the photoelectric detector and the signal acquisition and data processing module are in circuit connection in sequence. According to the invention, the defect that a broadband photoelectric detection and processing system needs to be used in the existing microwave photon frequency measurement technology is overcome, and the method has the advantages of high measurement precision, real-time measurement, need for a low-frequency detection and processing system only and the like.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Device for on-line detection of particle properties in fluidized bed granulation process
ActiveCN107870138BImprove monitoring effectEasy to understandParticle size analysisPermeability/surface area analysisImaging processingVisual inspection
Owner:ZHEJIANG UNIV
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