468results about How to "Simple method" patented technology

The invention relates to a dynamic adjust gyroscope life forecasting method based on gray model. By data collection of vibration effective value, random drift and environmental temperature parameter which are preprocessed using radial neural networks, influence of environmental temperature on vibration effective value and random drift is eliminated and random drift and effective value just related to time are obtained by subtracting drift constant value term, then trend term of vibration effective value and random drift are extracted by using wavelet transformation and gray model are built separately for their trend term. The smaller data in two values of life predicted of dynamic adjust gyroscope unless two predicted values exceeding performance parameter limitation when dynamic adjust gyroscope is considered losing effect. The invention uses performance parameter of life probative period of product to predict its life, showing discipline of performance parameter and life of dynamic adjust gyroscope. It is easy and convenient economical and reliable.

The invention discloses a pressure-controlled drainage gas production method and system for a coal-bed gas well. The pressure-controlled drainage gas production method comprises the steps that drainage is conducted through the first daily drainage amount, wherein the first daily drainage amount meets the eliminating demand for production interference objects in a coal bed; and a pressure-supplementing medium is injected while drainage is conducted, and the downhole flow pressure daily drop amount is maintained as a first differential pressure value so as to avoid retracting and closing of pores and cracks in the coal bed. According to the pressure-controlled drainage gas production method for the coal-bed gas well, the drainage speed at the drainage state can be conveniently determined, the eliminating demands for drilling and completion fluids, pulverized coal and slack coal in the coal bed can be met, and meanwhile, retracting and closing of the pores and the cracks in the coal bed can also be avoided; and compared with the prior art, the pressure-controlled drainage gas production method is simple in process, the production efficiency of the coal-bed gas well can be greatly improved, and quite high practical value and popularization value are achieved.

The invention discloses a method and device for automatically grabbing detonators. A device for grabbing the detonator is arranged on a middle blocking production line or an opening closing production line of the detonator; a group of expansion heads are arranged at the bottom of the device; the opening of the detonator is expanded and clamped by the expansion heads through the lifting of a cylinder control device and the deformation of the expansion heads to realize the purpose that the detonator is automatically taken out from a detonator filling mould. In the invention, the expansion heads controlled by machinery are adopted, and the opening of the detonator is expanded and clamped after the expansion heads are deformed, so that the detonator is automatically taken out from the detonator filling mould. A plurality of expansion heads are arranged at the same device, thus a plurality of detonators can be taken out by one device at one time, thereby greatly improving the production efficiency. The method provided by the invention is simple; and the adopted device is easy to manufacture, and has a good using effect.

The application belongs to the technical field of polymer materials, and particularly relates to a high-performance fiber composite material and a preparation method thereof. The preparation method of the high-performance fiber composite material comprises the following steps: adding pretreated aluminum oxide whiskers into a solvent, then adding pretreated carboxymethyl cellulose and gallic acid, and heating to reflux to obtain modified aluminum oxide whiskers; then mixing epoxy resin, the modified aluminum oxide whiskers, a curing agent and an accelerator uniformly to coat a film to obtain a resin adhesive film; and compounding the resin adhesive film and carbon fibers through hot pressing to obtain carbon fiber prepreg, and heating and curing the obtained prepreg to obtain the high-performance fiber composite material. The fiber composite material obtained by the application not only has high strength and rigidity, but also has excellent toughness, can effectively resist the impact of the external environment, has oxidation resistance and long-term stability, and has a wide application prospect in the fields of aerospace and new energy equipment.

This application relates to an interrupt generation device with synchronization function. By using one of the interrupt generation modules as a reference interrupt module, when the synchronization signal output by the synchronization output module arrives, the reference timing module adjusts the count of each interrupt module according to the synchronization signal, the reference count of the reference interrupt module, and the timing duration of the reference timing module itself, so as to change the output time of each subsequent interrupt signal. This makes the output reference interrupt signal synchronized with the synchronization signal, and other interrupt signals still maintain the initial phase relationship with the reference interrupt signal before adjustment, and eventually synchronize with the synchronization signal. In this way, only one synchronization signal is needed to ensure that the synchronization of all interrupt signals is achieved without changing the phase relationship between the interrupt signals of each interrupt generation module. The method is simple and has high synchronization accuracy.

This invention discloses a highly generalizable method for diagnosing open-circuit faults in multi-transistor converters of motor drive systems. This method addresses open-circuit faults in power devices caused by overcurrent surges, poor heat dissipation, and other factors, preventing damage to the motor and power grid equipment caused by output current distortion and increased torque ripple. The method analyzes the retention characteristics of the positive and negative regions of the three-phase stator current under steady-state operating conditions to construct a fault location function, and combines auxiliary variables to accurately distinguish between single-power and dual-power device open-circuit faults. This invention enables rapid location and accurate identification of complex open-circuit faults such as those in opposite phases on the same side or in opposite phases on opposite sides. It offers advantages such as high diagnostic accuracy, strong ability to distinguish mixed faults, and non-invasiveness, making it suitable for motor drive systems with high requirements for operational reliability and fault tolerance.

The application discloses a threshold segmentation method for an infrared small target background suppressed image, which realizes threshold segmentation of the infrared small target image after background suppression by calculating the similarity between a Gaussian filter template and an image block, fully utilizes the gray scale features and structural features of the small target, and accurately extracts all the small targets in the image. The application improves the problem that the traditional threshold segmentation method is prone to missing small targets in a multi-target detection task, realizes image segmentation with high detection rate and high real-time rate, provides guarantee for accurate detection of the infrared small target, and has the advantages of simple segmentation process, high efficiency and the like.

The invention discloses a platinum-based high-entropy alloy self-supporting catalyst as well as a preparation method and application thereof. The preparation method of the catalyst comprises the following steps: S1, dissolving a platinum source, an iron source, a cobalt source, a molybdenum source and a manganese source in a solvent according to the molar ratio of platinum to iron to molybdenum to cobalt to manganese being 1: 1: 1: 1: 1 to obtain a precursor solution; s2, dipping the carbon felt in a polyvinyl alcohol solution, and drying to obtain a substrate; and S3, dipping the substrate in the precursor solution, drying, and carrying out Joule heat flash evaporation to obtain the catalyst. According to the invention, five metals are added according to an equal molar ratio, the catalytic efficiency of the water electrolysis catalyst is improved by utilizing a high-entropy effect, the production cost of the catalyst is reduced, meanwhile, the long-time stability of the catalyst is improved by adding a self-supporting material, and an efficient and stable water electrolysis process in an acidic electrolysis environment is realized.

The present application relates to continuous casting billet slit detection technical field, specifically to a kind of continuous casting billet slit real-time detection device, including rack, the rack is rotatably connected with multiple conveying rollers by roller shaft, the top of the rack is fixedly connected with fixed frame, and the fixed frame is equipped with detection mechanism;Lift base, mounting plate and stepped insert by rack drive, when stepped insert is contacted with slit, stepped insert no longer moves downward, until pressure sensor reaches the threshold value set, signal is transmitted to system by pressure sensor, and second motor is closed by system control, so that the transmission of tooth column and rack is stopped, then the width of slit is judged according to the depth of stepped insert insertion, if width is less than the threshold value set, it is determined that normal value, if width is greater than the threshold value set, it is determined that replacement value, if width is in threshold range, it is determined that warning value, then according to actual measurement situation, timely early warning, method is simple, management is convenient.

The application relates to the technical field of carbon dioxide electro-reduction catalysts, and discloses a preparation method of a supported copper nitride catalyst, which comprises the following steps: mixing copper cyanamide and conductive carbon material and performing ball milling; the rotating speed of the ball milling is 500 r / min-5000 r / min, and the ball milling time is 1h-24h; the mass ratio of the copper cyanamide and the conductive carbon material is 1-10:1-10. The catalyst obtained by the method has better stability, selectivity and activity in a carbon dioxide electro-catalytic reduction reaction, and the addition of the conductive carbon improves the conductivity of the catalyst, so that the overpotential of the catalyst in the carbon dioxide electro-reduction is significantly reduced.

This invention provides an integrated device and method for gas ultrapurification, comprising: an integrated sealed cavity; an adsorption system disposed inside the integrated sealed cavity, the adsorption system being filled with at least one adsorbent; a temperature control system disposed inside the integrated sealed cavity, including independent refrigerant circulation loops and hot medium circulation loops, for temperature control of the adsorption system; and a gas pipeline system including a raw material inlet, a displacement gas inlet, a product gas outlet, and a desorption gas outlet, each interface being connected to the integrated sealed cavity; the temperature control system controls the temperature of the adsorption system, enabling the sequential execution of a series of processes within the integrated gas ultrapurification device under the condition of an inert gas flow: preheating and activation of the adsorbent, low-temperature adsorption purification of the gas, high-temperature desorption regeneration, and cooling of the adsorbent for later use. The method of this invention is simple, easy to operate, and has broad industrial application prospects.

The application discloses a kind of poly-polypeptide-based photoactivated room temperature phosphorescent materials and preparation method thereof, belong to the technical field of photoelectromagnetic functional polymer materials.The small molecule with room temperature phosphorescent unit as initiator, L-glutamic acid-gamma-benzyl ester endocyclic anhydride as monomer is prepared by ring-opening polymerization to obtain poly-polypeptide;The poly-polypeptide and polymethyl methacrylate are dissolved in N,N-dimethylformamide, and the poly-polypeptide film can be prepared by high-temperature drop casting method, the film can produce obvious room temperature phosphorescent signal and photoactivated room temperature phosphorescent property, and the proportion of poly-polypeptide and polymethyl methacrylate in blend film can be accurately controlled by regulation.

The application belongs to the technical field of lithium batteries, and discloses a gel electrolyte taking a functionalized two-dimensional MXene material as a dispersant as well as a preparation method and application of the gel electrolyte. The gel electrolyte comprises a functionalized MXene material and a basic electrolyte; the functionalized MXene material is obtained by the following method: 1) treating a MAX phase material with a solution containing HCl and LiF, intercalating, peeling off, and then reacting with a diazonium salt solution to obtain a sulfonic acid functionalized MXene material. The application further discloses a preparation method of the gel electrolyte. The application reconstructs a lithium ion solvation structure, reduces a desolvation energy barrier, homogenizes a bulk phase electric field and ion flow, cooperatively induces formation of a stable SEI interface rich in inorganic species, significantly inhibits lithium dendrite growth, and improves interface kinetic stability. The method is simple and low in cost. The electrolyte is used in a lithium metal battery and exhibits excellent cycle performance.

This invention discloses an artificial aggregate prepared using desulfurization solid waste, its preparation method, and its application, belonging to the field of solid waste resource utilization technology. The preparation method includes the following steps: ball milling desulfurization slag to obtain desulfurization slag powder; low-temperature pyrolysis treatment of waste incineration fly ash to obtain pretreated waste incineration fly ash; mixing desulfurization ash, desulfurization slag powder, and pretreated waste incineration fly ash to obtain a raw material mixture; adding water to the raw material mixture and pelletizing to obtain aggregate particles; subjecting the aggregate particles to air curing and mineralization curing sequentially to obtain the final product. This invention also discloses the artificial aggregate prepared by the above method and its application. The artificial aggregate prepared using desulfurization solid waste of this invention has high compressive strength and stable ion storage, which can solve the problems of low strength and high dependence on admixtures in existing coal ash-based aggregates, and has broad application prospects.

The application discloses a DST test pipe column safety checking method and relates to the technical field of oil and gas field exploration and development. The method comprises the following steps: a pipe column stress distribution model is established according to pressure impact, axial and radial vibration effects in the perforating process; a perforating explosion pressure field is calculated through impact load data of the pipe column at the perforating explosion moment, and spiral buckling evaluation is carried out; a packer stress model in the perforating process is established according to the type of the packer, the safety of the packer under the perforating working condition is analyzed, and packer safety evaluation under the perforating working condition is formed; the pipe column is subjected to the perforating pressure wave and three-direction stress effects, plastic conditions and strength conditions of the fourth strength theory are obtained, and the fourth strength theory is used for pipe column strength calculation and checking; and the pipe column safety in the perforating process is comprehensively evaluated based on the spiral buckling evaluation, the packer safety evaluation and the fourth strength theory calculation result. The method is simple in calculation, convenient in operation and simple and easy to implement in evaluation.

The application belongs to the technical field of proton exchange membrane fuel cell, and relates to a hydrophobicity-adjustable alloy nanotube array electrode for fuel cell and preparation and application thereof. Specifically, the application comprises preparation of metal nanotube array, alloying and hydrophobization of the metal nanotube array, and assembly of the membrane electrode. First, a metal nanotube array is constructed on a substrate surface through a two-step hydrothermal method; then, a hydrophobic substance is introduced into the metal nanotube array by means of immersion or ultrasonic spraying; then, pyrolysis is performed to realize alloying and hydrophobization of the nanotube array; finally, the nanotube array is transferred to a proton membrane, and the membrane electrode is cleaned. The membrane electrode can be applied to a proton exchange membrane fuel cell. The hydrophobicity-adjustable nanotube array electrode prepared by the application has the advantages of high catalyst activity and stability, low platinum loading, good water management, and easy scaling-up.

The invention relates to the technical field of fiber reinforced resin-based composite materials, and particularly discloses a quantitative characterization method for the wettability of a unidirectional fiber reinforced resin-based prepreg. The method comprises the following steps: cooling a prepreg sample in a refrigerant until the temperature is lower than the glass-transition temperature of a resin matrix by 50 DEG C or above, shooting and imaging by adopting a microscope, identifying and calculating the areas of a resin infiltration area and a resin non-infiltration area through image processing software, and further calculating the infiltration degree of the prepreg. According to the method, the defect that the infiltration degree is judged according to experience in the prior art is overcome, and key parameter support is provided for research and development of the prepreg.

This invention relates to the field of oral care products technology, specifically to an artificial enzyme with antibacterial properties, its preparation method, and its application. This technical solution employs a chemical reduction method, where a palladium source reacts in an environment containing surfactants and reducing agents to obtain palladium nanozymes. The obtained palladium nanozymes exhibit uniform morphology, controllable particle size, good dispersibility in water, and good biocompatibility; they have no significant toxic side effects on human gingival fibroblasts, possess highly efficient catalase activity, and demonstrate strong antibacterial and bactericidal effects against oral pathogens, significantly reducing bacterial drug resistance; they can inhibit acid production by oral bacteria, preventing tooth decay; and they retain their original catalytic activity even after multiple cycles of use. Applying the palladium nanozymes of this solution to the manufacture of oral care products can solve the technical problems of unsatisfactory safety and easy development of drug resistance in existing oral care products using antibacterial and anti-caries methods, showing promising application prospects.

The invention discloses a drum washing machine. The drum washing machine of the present invention comprises: a housing in which an outer drum is arranged; the front shock absorber is arranged between the shell and the outer cylinder and is close to the front end of the outer cylinder; the rear shock absorber is arranged between the shell and the outer cylinder and is close to the rear end of the outer cylinder; the ratio of the distance between the front shock absorber and the front end of the outer cylinder to the total length of the outer cylinder is 0.12-0.17; and / or the ratio of the distance between the rear shock absorber and the rear end of the outer cylinder to the total length of the outer cylinder is 0.15-0.22. According to the drum washing machine, the mounting positions between the front shock absorber and / or the rear shock absorber and the outer drum of the washing machine are reasonably designed, so that the front shock absorber and the rear shock absorber play the best effect, and the overall shock absorption effect of the washing machine is improved.

This invention relates to the field of microscopy application technology, and in particular to a SICM scanning control method and related device based on feedback quantization. The method acquires the test height, initial scanning speed, initial safe height of the test point, first speed adjustment start point, and second speed adjustment start point of the test point. It controls the scanning probe to descend from the initial safe height of the test point to the first speed adjustment start point at the initial scanning speed, intervenes with first dynamic speed adjustment, continues to descend to the second speed adjustment start point, intervenes with second dynamic speed adjustment, and continues descending until the probe detects a sudden change in ion current and stops descending. This control method solves the problems of low scanning time resolution and poor safety in existing scanning ion conductivity microscopes by setting an initial speed adjustment point that dynamically adjusts the speed according to the probe's descent position.

The utility model relates to three screw rod pump technical field, concretely relates to three screw rod pump for conveying high temperature lubricating grease, including double -deck heat preservation pump body, shaft seal, screw rod to be used for double -deck heat preservation pump body's double -deck welding type heat preservation mechanism, be used for shaft seal's mechanical seal flushing mechanism, be used for screw rod's axial thrust mechanism. The three screw rod pump for conveying high temperature lubricating grease, through having the double -deck welding type with heat preservation function's double -deck heat preservation pump body design, make it in the conveying high temperature lubricating grease pumping process, realize high pressure material in low pressure chamber when in overpressure is introduced, through having the shaft seal design with mechanical seal flushing system, reliably realized the shaft seal problem of high temperature lubricating grease, through the combination use under double -deck welding type heat preservation mechanism, mechanical seal flushing mechanism, axial thrust mechanism, can completely realize the safe long -life pumping of high temperature lubricating grease, pulsation is low, no shear, and this method is simple, economic, continuous, is suitable for the conveying process of high temperature lubricating grease.

A digital power control method, comprising the following steps: (1) determining the power control coefficient bit number as PA according to the quantization level bit number OUT of the digital signal whose power needs to be adjusted; (2) calculating the power control coefficient A p , the calculation formula of the power control coefficient A p is as follows: x dB is the power value needing to be adjusted, the range of A p is (0~(2 PA-1 -1)); (3) quantizing A p into a binary number, the binary number bit number is PA, and multiplying the quantized binary number by the digital signal whose power needs to be adjusted as the last set power control coefficient, so that the power control can be realized. The present application has the characteristics of simple method and high control precision.

The invention relates to a detection method of a medicine for dispelling wind and eliminating dampness. The detection method comprises the following steps: thin-layer identification of a notopterygium root medicinal material, thin-layer identification of a radix angelicae pubescentis medicinal material, thin-layer identification of a radix saposhnikoviae medicinal material, thin-layer identification of ligusticum and ligusticum wallichii medicinal materials, and thin-layer identification of a honey-fried licorice root medicinal material. Through methodological investigation, the detection method has the effects of strong specificity, good durability, clear spots after thin layer expansion, satisfactory separation degree and the like, can effectively control the product quality condition, improves the product quality detection standard, and ensures the product quality.

The application discloses a GIS equipment state research and judgment method and device based on IMF energy entropy, and the method comprises the following steps: acquiring GIS switch state data and corresponding state label values, and constructing a training set; constructing a time-frequency memory recurrent neural network based on IMF energy entropy; designing a cross-entropy loss function by considering a classification result and a real state label value; training the neural network, stopping the training when the training round reaches a maximum training round or the value of the cross-entropy loss function reaches a minimum, so that a trained neural network is obtained; inputting real-time collected GIS switch state data into the trained neural network to obtain a GIS equipment state research and judgment result; and the application has the advantages that the accuracy of GIS equipment state research and judgment is improved.

This invention discloses a method, device, and control terminal for detecting blanket kicking, belonging to the field of sleep monitoring technology. The blanket kicking detection method includes the following steps: Step S10, acquiring the temperature of the target blanket at each target location; Step S20, calculating the difference between the temperature at each target location and the previously acquired temperature at each target location to obtain the corresponding temperature difference value; Step S30, when at least two of the temperature differences at each target location are greater than a first temperature change threshold, or at least one temperature difference is greater than a second temperature change threshold, it is determined that the target blanket has been kicked off, where the second temperature change threshold is greater than the first temperature change threshold. This invention can continuously and effectively monitor whether a child kicks off their blanket.

This invention belongs to the field of battery materials technology, and discloses a single-crystal lithium nickel manganese oxide material, its preparation method, and a lithium-ion battery. The single-crystal lithium nickel manganese oxide material contains Li... x Ni 2‑x The percentage content of O2 is C≤1.6%, C=(I LixNi2‑xO2 / (I LixNi2‑xO2 +I LiNi0.5Mn1.5O4 ))×100%, I LixNi2‑xO2 For Li in the XRD refinement results x Ni 2‑x The diffraction peak intensity corresponding to O2, I LixNi2‑xO2 +I LiNi0.5Mn1.5O4 To add LiNi to the XRD refinement results 0.5 Mn 1.5 O4 and Li x Ni 2‑x The diffraction peak intensity of the O2 two-phase model indicates a grain size of 5–11 μm. The aforementioned single-crystal lithium nickel manganese oxide material was prepared via a lithium-deficient high-temperature sintering and lithium-replenished low-temperature sintering process. Li x Ni 2‑x Large-particle monocrystalline lithium nickel manganese oxide materials with low O2 content avoid electrolyte decomposition under high voltage, thus preventing the generation of HF and Li. x Ni 2‑x The O2 reaction can effectively improve the cycle stability of the battery. Simultaneously, the high compaction density of monocrystalline lithium nickel manganese oxide material can enhance the battery's energy density, thermal stability, mechanical properties, and durability. The method for preparing monocrystalline lithium nickel manganese oxide material in this invention is relatively simple, reliable, and effective, and can utilize existing production lines.

The invention discloses a model similarity design method suitable for a wave-underwater vibration table test. The method comprises the steps of determining a geometric similarity ratio of a reduced scale model; determining a structural density similarity ratio, a structural elastic modulus similarity ratio and a water density similarity ratio of the reduced scale model; determining a vertical geometric similarity ratio; determining an x-direction geometric similarity ratio under the action of a horizontal earthquake; determining a geometric similarity ratio in a horizontal y direction; the wavelength similarity ratio in the x direction is determined; and determining a wave height similarity ratio and the like. The method has the advantages that the reduced scale model in the design test is adopted, coordination similarity between water and the structure is achieved by changing the cross section size similarity ratio of the structure without changing the structure density similarity ratio, the method is simple and practical, model manufacturing is easy and convenient, and the method is suitable for large-scale production. And a feasible method can be provided for similar design of a wave-underwater vibration table test model under the earthquake-wave action.

The utility model discloses an oil seal structure of intermediate support assembly, including oil seal outer framework, oil seal inner framework, inner blade mouth and outer blade mouth, and oil seal outer framework is annular, and the end of oil seal outer framework is outwardly bent and forms the baffle, and the section of inner framework is annular and is L type, and inner framework is engaged in the baffle, and outer blade mouth is annular and is provided with the clamping slot on its edge. The utility model discloses oil seal outer framework and oil seal inner framework adopt the excess pressure and install into one whole oil seal assembly, and inner blade mouth can not only realize the sliding of intermediate support assembly on the intermediate spline shaft neck, but also seals the grease in the inner chamber of intermediate support assembly, prevents sundries from entering the inner chamber of intermediate support assembly, can discharge the extra grease simultaneously, and outer blade mouth protects inner blade mouth from directly contacting the sand, prevents the sand from damaging the first group oil seal formed by inner blade mouth and oil seal inner framework under the bad environment, prolongs the life of the first group oil seal, also prolongs the life of intermediate support assembly.

The application discloses a highway ramp speed measurement error compensation method based on a binary polynomial fitting. First, the measured ramp speed measurement environment is deployed, and time is matched. Second, the standard speed of the test vehicle, the speed measurement value and the distance measured by the radar speed measurement instrument at the same time are collected, and the measured ramp speed measurement data sample set is made. Then, the ramp speed fitting model is established, the training sample set is input into the ramp speed fitting model for data fitting and calibration. Finally, the calibrated binary polynomial is obtained, the ramp vehicle speed measurement value of the radar speed measurement instrument which needs to be corrected and the captured setting distance are input into the obtained binary polynomial for calculation, and the standard speed after error compensation is output. The application captures the ramp road environment characteristics through data fitting and calibration, realizes adaptive error compensation and measurement value correction of the ramp vehicle speed measurement of the radar speed measurement instrument, and avoids complex mathematical modeling.

The application discloses a ranging method and system, wherein the method comprises the following steps: acquiring a ranging image; acquiring a contour in the ranging image, determining a plurality of positioning points according to the contour, and obtaining a positioning point cluster; determining a two-dimensional code in the ranging image according to the positioning point cluster; determining a three-dimensional coordinate of the two-dimensional code in a camera coordinate system according to the two-dimensional code and an internal parameter matrix and a distortion matrix of the camera; converting the three-dimensional coordinate of the two-dimensional code to a world coordinate system, and determining a vertical distance from the two-dimensional code to a plane formed by an xy axis group of an origin of the world coordinate system. The method has the advantages of high ranging accuracy, simple method, fast calculation speed and wide application range. The system has the advantages of low ranging cost, low cost and low technical risk, and can provide accurate ranging with low error.