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43results about How to "Avoid sampling" patented technology
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Chip and method for achieving sleep mode wake-up through edge detection circuit
ActiveCN103645794AImplement wake-up from sleep modeEfficient consumptionPower supply for data processingGenerating/distributing signalsClock networkEngineering
The invention provides a chip and method for achieving sleep mode wake-up through an edge detection circuit. A central processing unit is used for sending a low-power-consumption application to a clock controller; the clock controller is used for closing a clock circuit according to the lower-power-consumption application, temporarily stopping providing a system clock for the edge detection circuit and the central processing unit and triggering entering a sleep mode; in the sleep mode, the edge detection circuit is used for detecting a signal to be detected and generating a wake-up signal according to the signal to be detected; the clock controller is used for switching on the clock circuit according to the wake-up signal, renewedly providing the system clock for the edge detection circuit and the central processing unit and sending a sleep mode signal to the edge detection circuit to trigger entering a common mode. The chip can shut down all clock networks and all clock generation circuits and wake up the sleep mode without affecting functions. In this way, the power consumption of the chip is lowered to the lowest degree.
Owner:GIGADEVICE SEMICON (BEIJING) INC
Chip allowing sleep mode and method
ActiveCN103631360AImplement wake-up from sleep modeEfficient consumptionPower supply for data processingGenerating/distributing signalsClock networkEngineering
The invention provides a chip allowing a sleep mode and a method. A clock controller is used for applying to switch off a clock circuit according to low power consumption, a system clock is suspended to be provided for an edge detecting circuit and a central processing unit, and the sleep mode is executed in a triggering mode. Under the sleep mode, the edge detecting circuit is used for detecting signals to be detected and generating rousing signals according to the signals to be detected; the clock controller is used for switching on the clock circuit according to the rousing signals and providing the system clock again for the edge detecting circuit and the central processing unit, sleep mode signals are sent to the edge detecting circuit, and a common mode is executed in a triggering mode. The chip allowing the sleep mode and the method are used for switching off all clock networks and all clock generating circuits and rousing the sleep mode on the premise that functions are not influenced, and therefore the power consumption of the chip is reduced, and the power consumption of the chip is made to be minimized.
Owner:GIGADEVICE SEMICON (BEIJING) INC
Manufacturing method for rock-surface-morphology-similar model structural plane
InactiveCN104819874AImprove the simulation effectShorten the test cyclePreparing sample for investigationSurface cleaningOperability
The invention provides a manufacturing method for a rock-surface-morphology-similar model structural plane. The method comprises the following steps: step 1, three-dimensional scanning of the surface morphology of a rock structural plane: a step of subjecting the selected rock structural plane to surface cleaning, and shooting the surface of the rock structural plane by using a three-dimensional scanner so as to obtain measured data of three-dimensional surface undulation morphology of the structural plane; step 2, generation of a three-dimensional model: a step of completing compositing of the scanning data by using reverse engineering software, and completing digitalization of a surface undulation morphology model of the rock structural plane, thereby generating the three-dimension geometric model; and step 3, processing of the model structural plane: according to the three-dimensional geometric model, realizing processing of a molded surface with the three-dimensional surface morphology on the surface of a testing model so as to obtain the rock model structural plane with the surface undulation morphology similar to that of the rock structural plane. The manufacturing method provided by the invention can satisfy requirements on manufacturing of the rock model structural plane with similar surface morphology without sampling of a field structural plane; meanwhile, the method is free of the disadvantages of difficult sampling of the field structural plane and high testing cost and has good operability and practicability.
Owner:SHAOXING UNIVERSITY
Trichomonas vaginalis and candida albicans two-channel fluorescence PCR detection method and kit thereof
ActiveCN102719529AHigh precision and accuracyHigh sensitivity and specificityMicrobiological testing/measurementMicroorganism based processesRNAFolsomia candida
The invention relates to primers and TaqMan probes used for carrying out two-channel fluorescence PCR detection of trichomonas vaginalis viruses and candida albicans viruses. The primers and the TaqMan probes are trichomonas vaginalis virus primers and trichomonas vaginalis virus TaqMan probes designed based on a trichomonas vaginalis virus conserved area and candida albicans virus primers and candida albicans virus TaqMan probes designed based on a candida albicans virus conserved area. Simultaneously, the primers and the TaqMan probes are used for detecting whether trichomonas vaginalis virus RNA and candida albicans virus DNA exist in a sample to be detected. The invention further comprises a detection method employing the primers and the TaqMan probes and a kit containing the primers and the TaqMan probes.
Owner:北京新沿线医药科技发展有限公司
DC probabilistic load flow method for classification processing of load and wind speed correlation
ActiveCN106532762AAvoid generatingAvoid samplingData processing applicationsSingle network parallel feeding arrangementsDensity curveElectricity
The invention provides a DC probabilistic load flow method for classification processing of load and wind speed correlation. The DC probabilistic load flow method comprises the steps of: adopting a Monte Carlo method based on Latin hypercube sampling to calculate a probability density curve of total wind electricity power of a related wind power plant; utilizing the feature that load is generally in normal distribution, and calculating a normal distribution function of total load rapidly by adopting an analytical method; and finally adopting a convolution method for synthesizing two kinds of probability calculation results. Since the generation and sampling of load samples are avoided when processing correlated load, the DC probabilistic load flow method can significantly improve the probabilistic load flow calculation efficiency while ensuring precision, and is of great significance in system planning, operational risk assessment and the like.
Owner:NANJING UNIV OF SCI & TECH
Power level simulation control method and device of three-phase alternating current motor
ActiveCN109839830AAvoid samplingAvoid running unstableSimulator controlMathematical modelClosed loop
A power level simulation control method and device of a three-phase alternating current motor are disclosed. The method is characterized by acquiring a three-phase current of a main loop of a motor simulator and a direct current bus voltage through sampling, and determining whether a three-phase current value and a direct current bus voltage value exceed a preset protection threshold; if the three-phase current value and the direct current bus voltage value exceed the preset protection threshold, carrying out protection motion; if the three-phase current value and the direct current bus voltage value do not exceed the preset protection threshold, calculating an equivalent counter electromotive force output by a motor simulator according to a simulated target motor and a mathematical modelof the motor simulator so as to control the motor simulator so that voltage and current characteristics of a three-phase port are not different from those of the simulated target motor. Simultaneously, a simulated target motor operating state calculated according to the mathematical model is fed back to a motor driver so as to complete a motor control process. In the invention, a three-phase portcurrent value of the motor simulator and the direct current bus voltage value only need to be sampled so as to avoid the sampling of a three-phase port voltage containing a large number of higher harmonics; and simultaneously, the motor simulator does not need to carry out closed-loop control on the three-phase port current, and system stability is improved.
Owner:TSINGHUA UNIV
Self-directed learning permanent magnet synchronous motor MTPA curve tracking method and apparatus
ActiveCN107707166AAvoid samplingLow costElectronic commutation motor controlAC motor controlPermanent magnet synchronous motorHigh torque
The invention discloses a self-directed learning permanent magnet synchronous motor MTPA curve tracking method and apparatus. The method comprises the steps of S1, performing initialization of a current amplitude value and a current angle value; S2, updating the current amplitude value at present; S3, obtaining a newest current angle value by summing of an angle compensation amount output by a PIregulator and the current angle value at present through an angle calculator, wherein the current angle value at present is updated into the newest current angle value; S4, working out a derivative ofthe current torque to the current angle value at present by a self-directed learning derivative observer through a disturbance observation method; S5, judging whether the derivative is within a set range or not by an error judger, if so, executing a step S6, or otherwise, executing a step S7; S6, if the current amplitude value at present is added with 10A, jumping to the step S2; and S7, enablingthe PI regulator to work out the angle compensation amount according to the derivative to be output to the angle calculator, and then jumping to the step S3. By changing the static calibration mode into a dynamic searching mode, the current angle value with the highest torque can be searched at the current vector value at present.
Owner:ZHEJIANG LEAPMOTOR TECH CO LTD
Device and method device for evaluating catalyst during preparation of oxalate through three-channel automatic CO gas phase oxidative coupling
ActiveCN103901131ASpeed up developmentRealize online real-time analysisComponent separationReal time analysisFour-way valve
The invention discloses a device for evaluating a catalyst during preparation of oxalate through three-channel automatic CO gas phase oxidative coupling and a method for evaluating a catalyst by using the device. The device comprises a gas control pipeline system (1), a fixed bed reaction system (2), a four-way valve system (3), a multi-ported valve system (4), a dual-channel gas chromatography system (5) and a product absorbing tank (6), wherein the gas control pipeline system (1) comprises one path of inert gas purging pipeline, one path of carbon monoxide gas pipeline, one path of nitrite ester gas pipeline and one path of nitrogen and argon mixed gas pipeline, the carbon monoxide gas pipeline, the nitrite ester gas pipeline and the nitrogen and argon mixed gas pipeline are same, each path comprises a gas conveying pipeline, a pressure stabilizing valve (7), a pressure meter (11) and a current stabilizing valve (8) which are sequentially connected, a pipeline behind the current stabilizing valve (8) is divided into three branches, and each branch comprises a quantity and flow controller (9) and a switch valve (10). According to the device, three same or different catalysts can be simultaneously evaluated, the developing speed of the catalyst is greatly increased, all-component online real-time analysis of raw materials and products can be realized, and data is accurate and reliable.
Owner:FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
Sampling device for measuring water body release gas phase
ActiveCN103792310AAvoid samplingAvoid intermediate links such as samplingComponent separationGas phaseNitrogen
The invention relates to a sampling device for measuring a water body release gas phase, aiming at realizing the in-situ research of water body release gas, particularly nitrogen release, and solving the problems of outdoor in-situ direct collection of the water body release gas and accurate sampling of the water body release gas to a gas phase chromatograph without interference, with accurate ration and accurate volume. The sampling device for measuring the water body release gas phase disclosed by the invention comprises a gas phase chromatograph sampling port, a gas collecting bottle for collecting water body release gas as well as a water storing tank and a sampling pipeline, wherein the bottom of the water storing tank is provided with a water outlet which is communicated with the gas collecting bottle through a water inlet pipe; the water inlet pipe is inserted into the bottom of the gas collecting bottle through an inserting hole formed in a bottle plug; one end of the sampling pipeline is arranged at a bottle port of the gas collecting bottle through the inserting hole formed in the bottle plug, and the other end of the sampling pipeline is communicated with the gas phase chromatograph sampling port. The sampling device provided by the invention has the advantages that the direct sampling for the detection of the gas phase chromatograph is realized under a normal pressure state, the middle links such as sampling are avoided, and the problems that the generated air pollutes a sample and the like are avoided.
Owner:JIANGSU ACAD OF AGRI SCI
Current control system for LCL type grid-connected inverter and active high-frequency damping method of current control system for LCL type grid-connected inverter
ActiveCN109638875ASuppress resonanceIncrease stability marginAc-dc conversionSingle network parallel feeding arrangementsPower inverterStatic error
The invention discloses an active high-frequency damping method for current control for an LCL type grid-connected inverter. The active high-frequency damping method specifically comprises the following steps that a current reference value i<L1_ref> on the inverter side and feedback quantity, that is, a predicting current hat{i}<L1> are subjected to subtraction to obtain an error value delta e, and the error value is output by a proportional controller; output signals are divided into three signal flows, one of the signal flows is used as input of a high-frequency damping unit, one of the signal flows is output through a current reconstruction and preset unit part, another one of the signal flows and a common coupling voltage v<pcc> which has a feed-forward coefficient k<g> are subjected to addition, and the sum is output through a time delaying unit; and an output value acts on a controlled object to obtain an output value, that is, an in-grid current i<L2>, the output of the currentreconstruction and preset unit part and the in-grid current i<L2> are subjected to addition, and the predicting current hat{i}<L1> is obtained. A current reconstruction method avoids sampling of a current on the inverter side, reduces the complexity of system hardware, improves invariant features of a system, compensates delay of the system, and reduces dynamic and static errors of the system.
Owner:XIAN UNIV OF TECH
Pichia pastoris fermenting method for improving precursor expression of insulin and analogue thereof
ActiveCN107022591AIncrease profitHigh expressionMicroorganism based processesInsulinsGrowth phasePichia pastoris
The invention relates to the field of biological pharmacy, in particular to a pichia pastoris fermenting method for improving precursor expression of insulin and analogue thereof. The fermenting culture comprises the following stages of an initial growth phase, a glycerin supplementing phase and a methanol inducing phase. The method has the advantages that by controlling a formula of an initial culture medium, and the nitrogen source type and carbon source supplementing type, and continuously or semi-continuously supplementing a small amount of microorganisms or plant-source organic nitrogen sources in the middle and later period of fermenting, the fermenting cycle is extended; while the quality of the target product is guaranteed, the output is increased by not less than 30%.
Owner:YICHANG HEC CHANGJIANG PHARMA CO LTD
Method for evaluating system damping ratio based on number of power oscillation times
The invention discloses a method for evaluating a system damping ratio based on the number of power oscillation times. According to the method, a small interference linearity equation of the interconnected network is generated based on data provided by a wide domain measuring system and power system analysis comprehensive program software, and the equation is solved to obtain time domain expressions of the power oscillation of various branches; the number of effective disturbance times of connecting lines between two domains within the domain oscillation frequency range and the relation of the theoretical ratio of the total number of effective disturbance times of the interconnected network and the damping ratio among the domains are obtained according to the time domain expressions of the power oscillation of the branches and an effective disturbance judging method; the number of effective daily disturbance times among the domains and the number of effective daily disturbance times of the interconnected network are obtained through the wide domain measuring system, and the actual ratio of the number of effective daily disturbance times among the domains and the number of effective daily disturbance times of the interconnected network is worked out; a curve chart corresponding to the relation is drawn, and the evaluation value of the damping ratios among the areas is obtained. The value of the damping ratio of the system and the changing situation can be evaluated according to WAMS historical data, and reference data are provided for operation workers.
Owner:STATE GRID CORP OF CHINA +2
Automatic online sampling sludge settlement ratio measuring device and method
PendingCN112146930AAvoid interferenceImprove real-time performanceWithdrawing sample devicesFlow cellSludge
The invention discloses an automatic online sampling sludge settlement ratio measuring device and method. The automatic online sampling sludge settlement ratio measuring device comprises a measuring flow cell and a control system, wherein the measuring flow cell is provided with a water and sludge inlet, an overflow port and a sludge and sewage discharge port; an automatic sample injection valve is arranged at an outlet of the water and sludge inlet, two pipelines are arranged behind the automatic sample injection valve, one pipeline is connected with a sludge discharge system of a preorder reaction tank and provided with an automatic sampling valve, the other pipeline is connected with a flushing water system and provided with an automatic flushing valve, the overflow port is connected with a wastewater collection system, and the sludge and sewage discharge port is connected with the wastewater collection system through an automatic sludge and sewage discharge valve; and the control system is connected with the control ends of all automatic valves, controls the automatic on-off of the automatic valves, and has the functions of time sequence control and one-key starting. Accordingto the device, the problems that a sample is not representative due to randomness of manual sampling, errors are generated in the manual sample moving process, sludge flocs are disturbed in the sampling and sample moving processes and the like are solved, reading is convenient and rapid, and the real-time performance and accuracy of sludge settlement ratio measurement are improved.
Owner:XIAN THERMAL POWER RES INST CO LTD
Paleomagnetism small sample orienteering acquisition device and use method
ActiveCN108196308AExact magnetic moment vectorSimple and fast operationWater resource assessmentElectric/magnetic detectionMeasurement deviceSmall sample
The invention provides a paleomagnetism small sample orienteering acquisition device and a use method. The device can perform paleomagnetism precise orienteering on small samples, the samples are placed in a ceramic fixing frame having the same size as a standard sample, and accurately oriented standard samples are formed; and the device is suitable for all the magnetometer measurement devices, and can greatly improve the sampling efficiency and the measurement precision. The paleomagnetism small sample orienteering acquisition device includes a connection device for being connected to a sun compass and a drilling hole, a rock core fixing rack for fixing a rock core sample, and a small sample picking device. The method includes the following steps: 1) connecting the connection device and the sun compass; 2) drilling a small hole in a rock core A; 3) using the rock core fixing rack to fix the rock core A; 4) connecting the connection device and the small drilling hole a formed in the rock core sample A; 5) using the sun compass on the connection device to measure the azimuth angle and the dip angle of the small drilling hole a; and 6) picking a sample.
Owner:EAST CHINA UNIV OF TECH
Method for monitoring polycyclic aromatic hydrocarbons in water body by utilizing changes of behavior intensity of green fishes
The invention relates to a method for monitoring polycyclic aromatic hydrocarbons in a water body by utilizing changes of behavior intensity of green fishes. The method comprises the following steps that 1), a water quality monitoring system based on quadrupole impedance and three-dimensional tracing technology is utilized to acquire fish behavior intensity data under various polycyclic aromatic hydrocarbon concentrations; 2) the change of the behavior intensity of to-be-tested biology acquired in the step 1) under the time t and the concentration C is expressed as an environment pressure variable E, wherein E is equal to e*t*C 3), after the environment pressure variable E in the step 2) is subjected to Kalman filtering, the behavior pattern of the fishes is divided into five changing stages; and 4), the pollution effect of the polycyclic aromatic hydrocarbons in the current water body is judged by monitoring the current behavior intensity of the green fishes. According to the method,a biological monitoring mode is adopted, a biological behavior step-by-step response model is established, which grade the response stage the biology at the current polycyclic aromatic hydrocarbon concentration is can be judged in real time, and then whether the current polycyclic aromatic hydrocarbons exceed the standard or not is judged.
Owner:SOUTH CHINA INST OF ENVIRONMENTAL SCI MEP
Method and device for eliminating moire in image
PendingCN111429374ARemove completelyImprove elimination efficiencyImage enhancementNeural architecturesComputer graphics (images)Radiology
The embodiment of the invention provides a method and device for eliminating moire patterns in an image. The method comprises the steps that a target image containing the moire patterns is acquired; inputting the target image into a preset generator, and taking the output of the generator as a moire elimination image corresponding to the target image, wherein the generator is a deep convolutionalneural network which is obtained through training by applying a preset generative adversarial network and is used for eliminating moire in the image. According to the method and the device, the elimination efficiency of the moire in the image can be effectively improved, the quality of the image after moire elimination can be effectively improved, and the definition of the image after moire elimination can be effectively improved.
Owner:INDUSTRIAL AND COMMERCIAL BANK OF CHINA
Trichomonas vaginalis and candida albicans two-channel fluorescence PCR detection method and kit thereof
ActiveCN102719529BAvoid samplingTest sample diversificationMicrobiological testing/measurementMicroorganism based processesFluorescenceCandida famata
The invention relates to primers and TaqMan probes used for carrying out two-channel fluorescence PCR detection of trichomonas vaginalis viruses and candida albicans viruses. The primers and the TaqMan probes are trichomonas vaginalis virus primers and trichomonas vaginalis virus TaqMan probes designed based on a trichomonas vaginalis virus conserved area and candida albicans virus primers and candida albicans virus TaqMan probes designed based on a candida albicans virus conserved area. Simultaneously, the primers and the TaqMan probes are used for detecting whether trichomonas vaginalis virus RNA and candida albicans virus DNA exist in a sample to be detected. The invention further comprises a detection method employing the primers and the TaqMan probes and a kit containing the primers and the TaqMan probes.
Owner:北京新沿线医药科技发展有限公司
A chip and method supporting sleep mode
ActiveCN103631360BImplement wake-up from sleep modeEfficient consumptionPower supply for data processingGenerating/distributing signalsClock networkVIT signals
The invention provides a chip allowing a sleep mode and a method. A clock controller is used for applying to switch off a clock circuit according to low power consumption, a system clock is suspended to be provided for an edge detecting circuit and a central processing unit, and the sleep mode is executed in a triggering mode. Under the sleep mode, the edge detecting circuit is used for detecting signals to be detected and generating rousing signals according to the signals to be detected; the clock controller is used for switching on the clock circuit according to the rousing signals and providing the system clock again for the edge detecting circuit and the central processing unit, sleep mode signals are sent to the edge detecting circuit, and a common mode is executed in a triggering mode. The chip allowing the sleep mode and the method are used for switching off all clock networks and all clock generating circuits and rousing the sleep mode on the premise that functions are not influenced, and therefore the power consumption of the chip is reduced, and the power consumption of the chip is made to be minimized.
Owner:GIGADEVICE SEMICON (BEIJING) INC
Gas detection device and method
ActiveCN103344603AAvoid samplingLow costColor/spectral properties measurementsLength waveElectric signal
The invention provides a gas detection device. The gas detection device comprises a light source, a GFC wheel, a White cavity and a first sensor, wherein a light splitting part is arranged in the White cavity and is used for separating out one part, emitted into the White cavity, of the light source; the GFC wheel is provided with a first cavity, a second cavity, a third cavity and a fourth cavity which are isolated mutually; an optical filter group is arranged on a measuring light path at one side, close to the light source, of the GFC wheel and is used for respectively making measuring light entering the first cavity and the second cavity pass through the wavelength of the spectral line of an absorption spectrum corresponding to a first gas and respectively making measuring light entering the third cavity and the fourth cavity pass through the wavelength of the spectral line of an absorption spectrum corresponding to a second gas; a second sensor is used for converting an optical signal split by the light splitting part into an electric signal and transmitting the signal to an analysis unit. The gas detection device has the advantages of high detection precision, low cost, simple structure and the like.
Owner:FOCUSED PHOTONICS
Farmland soil fertility evaluation method based on convolutional neural network
PendingCN112016596AAvoid soil samplingSave manpower and material resourcesCharacter and pattern recognitionNeural architecturesAgricultureStatistical analysis
The invention discloses a farmland soil fertility evaluation method based on a convolutional neural network. The method comprises the steps: obtaining an original farmland image, and building a farmland soil fertility classification model; performing normalization processing on each original farmland image, and performing data expansion on the normalized original data to form a training set; training the farmland soil fertility classification model by adopting the training set, obtaining a plurality of images of the target farmland as to-be-evaluated pictures, inputting the to-be-evaluated pictures into the trained farmland soil fertility classification model, and outputting a corresponding classification result; and obtaining the fertility evaluation grade of the target farmland after statistical analysis. According to the method, samples are obtained under the condition of not damaging farmland and crop growth, the soil fertility condition of the current land parcel is repeatedly calculated through deep learning, manpower and material resources are saved, and the classification accuracy is high; meanwhile, by combining a soil fertility multi-parameter space-time distribution rule, effective technical support is provided for accurate fertilization in final intelligent agriculture.
Owner:XIAN UNIV OF SCI & TECH
Turbine shaft reliability optimization design method based on Kriging model
ActiveCN111783237AReduce the number of timesAvoid samplingGeometric CADSustainable transportationAdaptive learningSurrogate model
The invention provides a turbine shaft reliability optimization design method based on a Kriging model. The turbine shaft reliability optimization design method comprises the steps of establishing a turbine shaft parameterized finite element simulation model is established; determining a turbine shaft failure mode, and establishing a target function and a reliability constraint function of the turbine shaft; determining an iterative design point and an iterative most possible failure point; constructing a Kriging agent model of the reliability constraint function; identifying an important failure mode by adopting an adaptive learning function to carry out adaptive sampling, and updating the Kriging agent model; solving by using a single-layer method to obtain a current optimization designpoint and a current most possible failure point; comparing the current optimization design point with the iterative design point, and if | | the current optimization design point-the iterative designpoint | is less than or equal to a threshold, determining the current optimization design point as a determined optimization design point; otherwise, updating the iterative design point by using the current optimization design point, and updating the iterative most probable failure point by using the current most probable failure point. The method is small in calculation scale and short in consumed time, and has very strong engineering significance for turbine shaft reliability optimization design.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Portable rapid water sampling and detecting device
InactiveCN111795858ARealize samplingControl liftWithdrawing sample devicesWide areaStructural engineering
The invention discloses a portable rapid water sampling and detecting device. A launch canister is arranged at the upper part of a base, a winding wheel is arranged on one side of the launch canister,a supporting barrel is arranged on one side of the winding wheel, a compression barrel is arranged on one side of the supporting barrel, and a moving plate is movably connected to the compression barrel through a telescopic rod. A plurality of water taking mechanisms are arranged on one side of the supporting barrel; a conical head is arranged in a fixed pipe; the conical head is movably connected with the fixed pipe in a sealing manner; a connecting rod is arranged on one side of the conical head; a spring is arranged on one side of the connecting rod and pushes the connecting rod to move into the supporting barrel; a limiting block is arranged on the other side of the connecting rod, the limiting block is movably connected to the connecting rod through a guide rod and moves outwards along the guide rod; and a fixing block is arranged on one side of the limiting block, and a starting block is arranged on one side of the fixing block and movably connected to the fixing block. Samplingin a wide area is achieved, sampled samples in the sampling process are increased, and sampling of different samples is achieved.
Owner:张桂娟
Device and method for monitoring concentration of sulfur trioxide in coal-fired flue gas on line
PendingCN112129898AEasy to detectReduce human errorWithdrawing sample devicesChemical reactionFlue gas
The invention relates to the field of monitoring of coal-fired flue gas pollutants and discloses a device and a method for monitoring the concentration of sulfur trioxide in coal-fired flue gas on line. The device is used for synchronously sampling the coal-fired flue gas in two paths; the first path of flue gas is filtered and then is directly introduced into a flue gas analyzer to analyze components of raw flue gas; the second path of flue gas is filtered and then is introduced into a reactor for storing solid salt particles to be subjected to chemical reaction to generate gas which has relatively stable properties and is easy to detect; then the gas is introduced into the flue gas analyzer to analyze components of the reacted flue gas; and finally, the concentration of the sulfur trioxide in the flue gas is calculated through comparing the difference of the components of the flue gas in the raw flue gas and the reacted flue gas. The device and the method have a simple principle; anda complicated sulfur trioxide sampling link is avoided through indirect measurement, the measurement period is greatly shortened and personal errors in a sample analysis process are reduced. Furthermore, the flue gas analyzer can be used for continuously measuring on line, so that continuous online monitoring of the sulfur trioxide can be realized through a simple computer function.
Owner:JIANGSU FRONTIER ELECTRIC TECH +1
Lung disease recognition method and device based on CT (Computed Tomography) data, medium and electronic equipment
PendingCN113850796AAvoid samplingAvoid the introduction of repetitive invalid noiseImage enhancementImage analysisComputed tomographyNuclear medicine
The invention provides a lung disease recognition method and device based on CT data, a computer readable medium and electronic equipment, and relates to the technical field of image processing. The method comprises the following steps: acquiring a 3D tensor corresponding to lung CT data to be identified, and partitioning the 3D tensor to obtain k partitioned tensors; performing lung disease classification identification on the k block tensors to obtain k block classification results; and outputting an identification result corresponding to the to-be-identified lung CT data according to the k block classification results, and determining a focus block tensor corresponding to the to-be-identified lung CT data in the k block tensors when the identification result is an abnormal result. According to the method, the 3D tensor is partitioned, so that sampling of the 3D tensor can be avoided, and then missing of key focus information or introduction of repeated invalid noise is avoided; and meanwhile, the focus block tensor can be directly determined in the k block tensors through the k block classification result, so that the coarse positioning of the focus is realized based on the focus block tensor.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD
Intelligent sludge settling ratio detection system
PendingCN114199732AReduce workloadReduce or avoid samplingMaterial analysisSludgeProcess engineering
The invention relates to an intelligent sludge settling ratio detection system, which comprises a biochemical pool, and the biochemical pool is connected with a measuring device through a sampling pipeline; a circulating auxiliary pump and a sampling control valve are arranged on the sampling pipeline, the sampling control valve is opened, and sewage in the biochemical pool enters the measuring device through the sampling pipeline; an image acquisition device is arranged above the measuring device, and the image acquisition device is connected with the computer and the cloud platform; the computer is respectively connected with the measuring device, the sampling control valve and the cloud platform, and the cloud platform is also connected with a handheld terminal. According to the invention, the workload of field operators is reduced; on-site operators are prevented from getting on the water pool for sampling in severe weather, so that the life and property safety of the on-site operators is ensured; the situation that on-site operators forget to detect sewage data regularly due to carelessness is avoided, and data omission is prevented.
Owner:江苏科德生态环保水处理有限公司
lcl type grid-connected inverter current control system and its active high-frequency damping method
ActiveCN109638875BSuppress resonanceAvoid samplingAc-dc conversionSingle network parallel feeding arrangementsProportional controlGrid connected inverter
The invention discloses an active high-frequency damping method for current control of an LCL type grid-connected inverter, which specifically includes the following steps: the inverter side current reference value i L1_ref The error value Δe is obtained by making a difference with the feedback amount, that is, the predicted current. The error value is output by the proportional controller, and the output signal is divided into three signal streams, one is used as the input of the high-frequency damping unit, and the other is partially output by the current reconstruction and prediction unit. , the other way has the feed-forward coefficient k g The common coupling voltage v pcc Adding, the obtained sum is output by the time-delay unit, and the output value is applied to the control object to obtain the output value, that is, the grid-connected current i L2 , the output and input current i of the current reconstruction and prediction unit L2 Add them together to get the predicted current. The current reconstruction method avoids the sampling of the inverter side current, reduces the complexity of the system hardware, improves the stability characteristics of the system, compensates the delay of the system, and reduces the dynamic and static errors of the system.
Owner:XIAN UNIV OF TECH
Time sequence parameter scanning method and apparatus
The invention discloses a time sequence parameter scanning method and apparatus. The method comprises the steps of initializing a synchronous dynamic random access memory, configuring multiple groupsof time sequence parameters, and traversing each group of the time sequence parameters; performing DMAC (Direct Memory Access Controller) reading detection on different traversed time sequence parameters to obtain the time sequence parameters corresponding to correct reading / writing of data of the synchronous dynamic random access memory; and selecting a group of optimal time sequence parameters from the obtained time sequence parameters through data line and address line detection and minimum time sequence parameter delay principles. The time sequence parameters of the synchronous dynamic random access memory are scanned by adopting a scanning algorithm of a DMAC, so that error data is prevented from being sampled by single reading operation, the optimal time sequence parameters of the synchronous dynamic random access memory can be directly, accurately and quickly found, and the time sequence parameters are more stable and reliable; and a conventional March_C algorithm is improved, so that errors of a data line and an address line of the synchronous dynamic random access memory can be detected more effectively, and the fault detection range is wider.
Owner:BEIJING XINWEI TELECOM TECH
A gas control method for soft and outburst coal seams in large mining and long working faces in underground coal mines
ActiveCN111878079BAvoid samplingReduce financial burdenUnderground miningSurface miningMining engineeringCoal
The invention provides a method for controlling gas in a soft and protruding coal seam in a large mining length working face in an underground coal mine. After the directional drilling in the first step enters the coal seam, the third step: when the drilling in the second step is in place according to the drilling trajectory, the fourth step: exit the conventional rotary drilling tool in the drilling hole, Carry out networked negative pressure drainage for the sealing holes; step 5: during the drainage process, according to the monitoring results of the regional gas drainage online monitoring and metering device described in the fourth step; step 6: according to the The metering results of the regional gas drainage on-line monitoring metering device, through the drilling method combining the directional drilling rig technology and the conventional rotary drilling technology, give full play to the respective advantages of the directional drilling rig and the conventional rotary drilling rig, and effectively avoid drilling holes during the construction of the conventional rotary drilling rig It is easy to string holes, and the drill pipe is difficult to enter the coal seam due to the influence of its own weight.
Owner:PINGDINGSHAN TIANAN COAL MINING +2
A Reliability Evaluation Method of Power Generation System Based on Generator Importance
Owner:TONGJI UNIV
Method for Evaluating System Damping Ratio Based on Power Oscillation Times
Owner:STATE GRID CORP OF CHINA +2
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