242results about How to "Solve practicality" patented technology

The invention discloses a lithium-battery variable fractional order and equivalent circuit model and an identification method thereof. The lithium-battery variable fractional order and equivalent circuit comprises a run time circuit and a battery I-V characteristic circuit, wherein a capacitor in the battery I-V characteristic circuit is a variable fractional order capacitor. A second order RC circuit model is generalized to a non-integer order, and the model parameters and the number of fractional order of different SOC are identified based on a least square method, so that the fractional order and equivalent circuit varying order according to the SOC is obtained. The instruction of fractional order realizes the continuous change of the order number of the model, so that the model is relatively stable, good in dynamic property and high in precision. The variation of fractional order realizes more freedom and more flexibility and innovation of the model. As the number of RC networks is not increased, the fractional order model effectively solves the contradiction between the accuracy and practicality of the model, is suitable for various working conditions of batteries, and has high practical value. The invention provides a precise battery model easy to realize for precise estimation of SOC.

The invention provides a personalized recommendation method and system based on collaborative filtering and deep learning, and the method comprises the steps: obtaining historical behavior feature data of commodities purchased by a user, carrying out the preprocessing, and sorting the purchasing behaviors of the user according to the time, wherein the sorted data is called a behavior feature sequence of the user; performing the personalized recommendation system modeling, which comprises the steps of obtaining input vectors of a user and a commodity from an interaction matrix, then respectively generating embedded vectors of the user and the commodity, weighting the embedded vectors through an attention neural network, and performing linear and nonlinear interaction on the weighted embedded vectors, thereby obtaining the explicit and implicit relationship between the user and the commodity; finally, estimating the click rate of the user to the commodity; and training and testing the model by using the user behavior characteristic sequence. According to the method, the collaborative signals of the users and the commodities are fully mined, a basis is provided for capturing personalized demands of the users, and the accuracy and interpretability of a recommendation system can be improved.

The present invention which belongs to the matrix converter control technology is a control method for a matrix converter. An input phase voltage is divided into a main range and a transition range in which new P, M, N conditions and PM, NP, MN transition conditions are defined, some null vector is selected and the condition combination sequence of bidirectional power switches are adjusted in each modulation period to realize the safe, reliable and rapid commutation and the stable operation of the matrix converter. The present invention also provides a device to realize the present method, including a trigger driving circuit, an over-current protecting circuit, a synchronous signal detecting circuit, a voltage range dividing unit, a switch state control unit and a commutation control unit. Based on the two-step commutation strategy of the voltage of the transition range and without an extra measuring device to precisely detect the relative size relation of the input phase voltage, the present invention solves the problem of a short circuit caused by an inaccurate measurement of the input phase voltage during range alteration, and the waveforms of the output voltage and the input current are not affected.

The invention discloses a service function chain path finding method based on segmentation routing technology. The method comprises the following steps: S1, generating a service function chain path finding request; S2, performing descending order sorting; S3, setting a source node and a target node; S4, obtaining a node set of a virtual network function; S5, calculating the shortest path accordingto the shortest path principle; S6, judging whether the shortest path is feasible; S7, judging whether there is a corresponding node or target node that is not marked; S8, performing path finding again; S9 adding a routing path, and adding a segment label number to a segment list; S10, updating the network resources; S11, obtaining a service function chain deployment path; S12, compressing the segment list; and S13, outputting the service function chain deployment path and he compressed segment list. By adoption of the service function chain path finding method disclosed by the invention, theproblems that the operation is complicated, path selection cannot be achieved under complicated judgment conditions, the function is poor, no optimization function is provided and that the practicability is low in the prior art are solved.

The invention discloses a stress sensor based electronic device functional profile feature point displacement field reconstruction method. The method includes: determining a structural parameter and a material attribute of an electronic device functional profile and distribution positions and the number of stress sensors; acquiring a stress value measured by functional profile stress sensors under the action of service loads; establishing a structural finite element model of a functional profile; performing modal analysis on the functional profile; acquiring a modal shape and a stress modal shape of the functional profile; extracting a stress modal shape matrix corresponding to position nodes of the stress sensors; calculating a generalized modal coordinate; extracting a modal shape matrix corresponding to feature points of the functional profile; and reconstructing displacement of the feature points of the functional profile. Based on a modal analysis theory, the method can use stress values measured by the few stress sensors to reconstruct a displacement field of the feature points of the electronic device functional profile in the condition of unknown structural load information, and can direct structural distortion compensation and electrical performance compensation of the electronic device functional profile.

The invention relates to a bi-directional power flow controlled multi-level mutual balance solid state transformer and a realization method thereof. The solid state transformer is a three-phase solid state transformer which is designed by using a mutual balance structure, and uses an AC-DC-AC three step type transform structure. A high voltage level, an isolation level and a low voltage level are comprised. The high voltage level and the isolation level are transformers with the same three-phase structure and are composed of sub units. The low voltage level is a single whole module which realizes an automatic mutual balance structure. Three-phase sub units of the high voltage level are connected in a star mode. The low voltage level is an alternating current output end with a three-phase four-wire wiring mode. The solid state transformer can realize power bi-directional flow. The whole three-phase system uses an independent structure, which is convenient for three-phase independent control and modular production. Through the direct current bus parallel module of the low voltage level, a three-phase electric power automatic mutual balance function is realized, so that the practical problem of the solid state transformer is solved.

The invention belongs to the technical of low-temperature Atomic Layer Deposition (ALD), and particularly relates to a flexible nanodot resistive random access memory (RRAM) based on all low-temperature process and a manufacturing method thereof. The method comprises the steps: at first, growing a bottom electrode on a flexible substrate by using a low temperature PVD (Physical Vapor Deposition) method, then growing an oxide layer through a low temperature ALD method; growing nanodots and then growing another oxide layer through the low temperature ALD method;and finally growing a top electrode. The nanodots accessed to the oxide layer can effectively improve the stability of high / low resistant state transformation of the RRAM and reduce the occurrence possibility of errors, thereby solving the problems regarding reliability and practicability. The method can be applied to the manufacturing of flexible low-temperature memory in the future, and change the packaging and existing manner of the memory at present, enables the folding and bending of portable memories to be possible.

The invention relates to a high-head radial gate pneumatic active type water sealing system used for controlling the opening and closing of a pressurized water seal in the position of a gate in a power plant, which comprises an air compressor, a pressure storage tank, control valves communicated with the pressure storage tank, and a pressurized water seal. Three ways of pipelines are arranged at the upper end of the pressure storage tank, and a pressure display controller is connected with a stop valve to form a first way of pipeline; a safety valve is connected with a stop valve to form a second way of pipeline; a pressure gauge is connected with a stop valve to form a third way of pipeline, and the air outlet of the pressure storage tank is arranged at the lower end of the pressure storage tank. The front part of the pressure storage tank is communicated with the air compressor, a temperature signal indictor, a stop valve, a check valve and another stop valve are arranged between the air compressor and the pressure storage tank, the rear part of the pressure storage tank is communicated with the pressurized water seal, a magnet directional valve is arranged between the pressure storage tank and the pressurized water seal, the front pipe and the rear pipe of the valve are communicated with pipelines, the other pipe is communicated with a flow control valve and an air outlet, three ways of branch pipelines are arranged between the magnet directional valve and the pressurized water seal, the first way of the pipeline is an emergency air outlet; a contact pressure gauge and a stop valve are arranged on the second way of the pipeline; a pressure transmitter and a stop valve are arranged on the third way of the pipeline. The water sealing system has the advantages of simple structure, low cost, sensitive reflection, simple failure predication, high automation level and reliable operation in the cold area under low-temperature environment.

The present invention relates to a chirp pulse amplifying spectrum shaping dielectric film structure reflector, which comprises a transparent substrate, a high reflectance film system, an anaglyph structure and an external protective layer. Wherein, the high reflectance film system is composed of a plurality of staggered dielectric films. A high reflectance film layer and a lower reflectance film layer of the high reflectance film closely contact the anaglyph structure. The anaglyph structure can take a plurality of shapes, such as a micro-lens high transparency film system structure, an air dielectric structure, a glass anaglyph structure or other transparent dielectric structures, including semiconductor structures. As a high-power laser chirp pulse with a plane wave structure vertically casts onto the reflector, the laser passes through the high reflectance film system and the anaglyph structure and all residual lasers are reflected to back of the reflector through the transparent substrate. Reflex intensity distribution is modulated to a needed spectrum distribution structure. The reflector of the present invention can be inserted into any place of an amplifier link and improve capacity to distinguish shaping spectrum chromatic dispersion to a certain level. Scope modulation exceeds 60% without changing phase position, thus adapting to PW devices.

The invention relates to a humidifier which comprises a water tank (1) and a base (2), wherein the water tank (1) is arranged above the base (2), and the bottom of the water tank (1) and the top of the base (2) are enclosed into a water storage chamber (3). The humidifier is characterized in that a water replenishing hole (12) of the water tank (1) is arranged at the top of the water tank (1), and a water outlet (13) at the bottom of the water tank (1) is provided with a water discharging mechanism. Because the structure that the water replenishing hole of the water tank is arranged at the top of the water tank and the water outlet at the bottom of the water tank is provided with the water discharging mechanism is adopted, when the humidifier works, water in the water tank enters the water storage chamber through the water discharging mechanism, when the humidifier stops working, the water discharging mechanism seals the water outlet of the water tank, and water is replenished from the water replenishing hole at the top of the water tank as required, therefore, the humidifier not only is convenient for replenishing water, but also has simple structure; and in addition, a main controller with a multipoint control unit chip is used for automatically measuring and judging water level in the water storage chamber and controlling the water discharging mechanism to execute a water replenishing command, thus the problem of water overflow is completely solved.

The invention relates to a super-hydrophobic high-transmittance SiO2 anti-reflecting thin film and a preparation method thereof; a hybrid sol doped with trimethylchlorosilane is prepared by a sol-gel method; the surface of a glass slide is cleaned; a plating film is formed on the surface of the glass slide by a dip-coating method, and the super-hydrophobic high-transmittance SiO2 anti-reflecting thin film is obtained after the plating film is dried. Compared with the prior art, the preparation method has the advantages of simple manufacturing process and low cost, and the obtained sol has good uniformity and can be used for large-area film forming. Due to relatively high transmission, incident light transmission can be improved and the solar cell efficiency can be improved when the anti-reflecting thin film is used on a photovoltaic glass cover plate. Moreover, because the thin film has good hydrophobicity and has good self cleaning ability, the thin film is suitable for outdoor humid environments.

The invention discloses a large-atmosphere low-temperature plasma fluidic generator, and belongs to the technical field of medium baffle discharge plasma. The large-atmosphere low-temperature plasma fluidic generator is characterized in that an electrode part consists of an inner electrode which is connected with a high-voltage end and arranged inside a capillary glass tube, and an earthing electrode which coaxially sleeves the outer circumference of the glass tube; a shell part consists of an outer wall, an electrode support sleeve and a wiring fixing sleeve which are connected from bottom to top; a power supply access part consists of a high-voltage electrode plug and a very low-voltage electrode plug which are embedded into the upper end surface of the wiring fixing sleeve; the high-voltage electrode plug consists of a high-voltage conduction block which is fixed between the lower end surface of the wiring fixing sleeve and the upper end surface of the electrode support sleeve, and a spring which is wound on the inner electrode and has a conductive function; the earthing wire on an outer electrode is connected with an earth wire fixing end surface through the shell and a wire groove inside the wiring fixing sleeve, and is connected with an earthing electrode plug; an air inlet part consists of an air inlet tube which is embedded into the upper end surface of the earthing electrode plug. Therefore, the use security reliability is improved while the practical application purpose is achieved.

The invention discloses a streetscape image stereoscopic model space orientation method based on a direction line segment. The method includes the following steps: using a digital camera to collect stereoscopic image pairs of a street building, collecting vertical structure line information of the surface of the street building and horizontal structure line information of the surface of the street building to be used for determining an inclined rotary angle of an image stereoscopic model; measuring a running angle of a selected vertical face running line segment on the building to be used for determining a stereoscopic model orientation rotary angle; measuring the length of the vertical face running line segment to be used for determining a stereoscopic model scaling measuring scale, conducting image orientation treatment which comprises image distortion correction, image relative orientation, model coordinate calculation, module space orientating rotary angle step-by-step calculation, model scaling coefficient calculation, and model space translation amount calculation, and each image point corresponding coordinate calculation. The method is free of arranging object space control points, quick in working speed, convenient and easy to operate, and capable of largely improving working efficiency of streetscape photogrammetry and three-dimensional reconstruction field collection work.

The invention discloses mobile equipment for help-seeking service and an implement method thereof. The mobile equipment is mainly composed of an information building unit and a network service unit which are respectively arranged on the mobile equipment. An operation module for help-seeking service is pre-arranged on the information building unit. The network service unit is a communication module which acquires geographical location information of the mobile equipment, detects and is connected with an alarm position and sends out the geographical location information and help-seeking information in real time. The implement method comprises the following steps: (1) starting the help-seeking service of the information building unit; (2) acquiring the geographical location information of the mobile equipment and contact information of the alarm position through the network service unit; (3) the network service unit sending help-seeking information and the geographical location information to the alarm position. The mobile equipment for the help-seeking service is reasonable in design, not only can ensure efficient personal safety, but also has the advantages of being hidden, effective, timely, suitable for actual emergency circumstances, and having popularizing value.

The invention discloses a graphene / trimanganese tetraoxide composite nano lubricating additive and a synthesis method thereof. Specifically, the synthesis method includes: mixing graphite with concentrated sulfuric acid and potassium permanganate in a high mass ratio, and carrying out oxidation reaction to obtain a mixed solution containing graphite oxide and / or graphene oxide; adding hydrogen peroxide into the mixed solution to reduce unreacted potassium permanganate, and adding water for dilution, and conducting ultrasonic treatment for a predetermined period of time to obtain a graphene oxide mixed solution; adjusting the pH of the graphene oxide mixed solution to alkaline, and carrying out reaction to obtain trimanganese tetraoxide and loading it to graphene oxide, and evaporating or filtering the mixture to obtain a solid product; subjecting the solid product to reduction treatment at high temperature to obtain a graphene / trimanganese tetraoxide composite product; and cleaning thegraphene / trimanganese tetraoxide composite product, and then performing ball milling treatment, thus obtaining the graphene / trimanganese tetraoxide composite nano lubricating additive. The method issimple and efficient, and the prepared additive has excellent dispersibility and lubricity.

The present invention discloses a power distribution box with a heat dissipation function. The power distribution box comprises an outer box body; two groups of first ventilation holes which are symmetrical to each other are formed at the outer surface of the outer box body; a dust screen is fixedly connected into each first ventilation hole; the inner top wall of the outer box body is fixedly connected with a heat dissipation fan; the inner side wall of the outer box body is fixedly connected with two groups of symmetrical springs; the inner bottom wall of the outer box body is fixedly connected with an inner box body; second ventilation holes are formed at the top of the inner box body; two symmetrical notches are formed at the outer side surface of the inner box body; and the upper part of the inner side wall of the inner box body is fixedly connected with a first temperature sensor and a second temperature sensor. With the technical schemes of the invention adopted, the power distribution box can be effectively prevented from being damaged, the convection speed of air is effectively speeded up, the timely discharge of heat is ensured, and the problems of low heat dissipation efficiency and low practical performance can be solved. The power distribution box with the heat dissipation function has the advantages of more diverse heat dissipation measures, high safety performance, good heat dissipation effect and higher precision.

The invention provides a makeup style migration method and system based on regional style consistency, and the method comprises the steps: inputting a plain face image and a reference makeup face image, and deformation images to obtain a pseudo makeup face image; based on the number of preset sub-makeup styles, performing makeup segmentation on the pseudo makeup face image through an SOM network by using the color texture information of the makeup, decomposing the makeup style into the sub-makeup styles, and dividing the overall makeup into different sub-makeup style areas to obtain an approximate result of a makeup segmentation result of the target makeup face image; inputting the plain face image and the reference makeup face image into an adversarial generative network, adjusting a generative network module in the adversarial generative network through regional adaptive normalization, and applying the same normalization mode to the same sub-style region to enhance the consistency oflong-distance similar makeup regions; and enabling the generation network module to output the target makeup face image, so that a better makeup style migration image effect can be realized.

The invention discloses an independent dehumidification air conditioning method for adjusting humidity by using external ice-melting cold storage and adjusting the temperature by using underground water. By the method, independent dehumidification is realized in an independent dehumidification fresh air handling unit by using the capability of continuously outputting low temperature water of the external ice-melting cold storage, and the temperature is adjusted by an underground water source serving as high temperature freezing water. By the method, the independent dehumidification is realized in the independent dehumidification fresh air handling unit by using the capability of continuously outputting the low temperature water of the external ice-melting cold storage, and the temperature is adjusted by the underground water source serving as the high temperature freezing water; meanwhile, year-round indoor air conditioning parameters are optimized by the existing air conditioning comfort theory, the external ice-melting cold storage is used for low-temperature freezing dehumidification, low temperature air supply is performed and sensible heat load is borne by cheap underground water, an air conditioning mode of independent dehumidification and high temperature freezing water cooling is realized, the energy of the natural world is effectively used, the volume and the operating cost of thermal cold and heat sources are lowered, and needed equipment components are integrated into an integrated product, so that a technical scheme and an energy conservation effect are effectively practiced on the premise of ensuring an air conditioning effect.

A system for getting and communicating about information through internet, includes a database; an internet; and a customer terminal coupled to the internet, an application server coupled to the internet consists of a component that can accept the affair information input by the user, a template of affair input page that can be called from the database, a component that the affair information input by the user can be fed back to the database, a component that can accept the key word inquiry by the user, a component that can inquiry the keyword from the database and a component for controlling the display; a management server coupled to the internet includes sorting and mistake correcting components and a component for establishing the topic. The present invention also provides the corresponding method. The effect of the present invention is to provide a method and its system which is more practical for information about affairs, and the resources can be shared.

The invention discloses an on-line monitoring and diagnosing method and device for a tap switch and a storage medium. The method comprises the steps of: respectively obtaining monitoring waveforms ofthe odd number side and the even number side of a selector switch in an on-load tap switch; building an electromagnetic transient simulation model of the tapping switch, and carrying out the simulation of the normal switching of the on-load tapping switch, and obtaining the simulation waveforms of the odd and even sides of the switching switch of the on-load tapping switch; judging whether the internal electrical state and the mechanical state of the on-load tap-changer are normal or not according to the monitoring waveform and the simulation waveform; if the working state of the on-load tap-changer is judged to be normal, ending; otherwise, comparing with the fault simulation waveform in the fault simulation waveform library, or setting new fault re-simulation calculation until the simulation waveform consistent with the monitoring waveform characteristics is obtained, and determining the fault reason. According to the invention, on the premise of not changing the original wiring andstructure of the tapping switch, the internal electrical quantity of the switch is monitored in real time, and the working state of the on-load tapping switch is diagnosed through simulation comparison.

The invention discloses an image recognition method and system, a storage medium and a processor. The image recognition method comprises the following steps: acquiring image features of a target image, the image features being image features obtained by fusing first image features and second image features, the first image features being image features extracted from a color image of a target object, and the second image features being image features extracted from a grayscale image of the target object; and analyzing the image features by using a preset model to obtain the type of the targetimage, the preset model being obtained by using multiple groups of data through machine learning training, and each group of data in the multiple groups of data including the image features of the sample image and the type of the sample image. According to the invention, the technical problems of relatively low accuracy and practicability when an existing image recognition method is adopted to recognize a paper duplicated image are solved.

The invention discloses a 10KV outdoor permanent magnet circuit breaker controller. The controller comprises a shell, an end cover, a bottom plate, a voltage transformer, a chute, a square rod, a square groove, a spring I, a T-shaped rod I, a ball, a screw, a T-shaped rod II, a spring II, a magnetic ring, a limiting block, a limiting groove, a groove, a storage groove, a spring III, an inclined block, a connecting rod, a clamping block, a T-shaped rod III, a spring IV, a clamping groove, a protective plate I a protective plate II, and a fixing block. The end cover rotates to drive the limitinggroove to move; the T-shaped rod II moves to drive the limiting block to move to be separated from the magnetic ring; under the action of the elastic force of the spring II, the limiting block movesinto the limiting groove to limit the position of the end cover; the connecting rod extrudes the clamping block to enable the clamping block to move, the clamping block moves to drive the T-shaped rodIII to move, the T-shaped rod III moves to stretch the spring IV, the spring IV generates elastic force, and when the clamping block is aligned with the clamping groove, the clamping block moves intothe clamping groove, and then the connecting rod is clamped into the storage groove.

The invention provides a hardware-in-loop multi-channel fuel cell impedance testing system. The system overcomes the defects that a traditional electric-pile electronic testing system can only give general information of an electric pile but cannot obtain the individual information of all single cells constituting the electric pile. The hardware-in-loop multi-channel fuel cell impedance testing system is characterized in that an electric pile composed of fuel cells and a multi-channel current sensor are connected with a multi-channel potential sensor, the detection of the single cells and theanalysis of the synchronous multi-cell impedance can be achieved while the whole current distribution information of the electric pile is obtained, correspondingly the information about electrochemical reactions, mass transfer and internal resistance changes can be obtained, and the demands of the electric pile for multi-directional precise analysis and diagnosis can be met. The system fills the blank in a multidirectional battery durability analysis and diagnosis platform in China, greatly promotes the research on battery service life and performance attenuation mechanisms and rules, improvesthe durability of a power supply system, and eliminates the bottleneck of practicability and industrialization of the power supply system.

Disclosed are a pressure sensing method based on photonic crystal fibers and a sensor. Light emitted from a light source is coupled to a pressure sensing head through general conducting fibers, wherein the pressure sensing head is manufactured by the photonic crystal fibers. When pressure acts on the pressure sensing head, size and pitch of air holes of the photonic crystal fibers and pressure thereof are varied linearly, the light source transmission light mold field is varied, welding point coupling loss is then varied, and variation of light strength can be detected by a detector, so that pressure measurement is realized. The sensor is simple in structure, small in size, compatible biologically, independent with temperature and insensitive to electromagnetism and radiation, and the like.

The invention provides a safe sewer well lid. The safe sewer well lid is used for solving the problems of lower safety, poor practicability and lower reliability of a well lid in the prior art. According to the technical scheme provided by the invention, the safe sewer well lid comprises a cover plate, a well base and a foundation base, wherein the cover plate is moveably connected with the well base and the well base is arranged on the foundation base. The safe sewer well lid has the beneficial effects that the maintenance cost is lower than that of the traditional well lid; the well lid is fit with the pavement, so that the stress of the well lid can be shared by the pavement, the lower part of the support base of the well lid can be served as a support and the well lid is dually stressed; the antitheft property and the safety are promoted; the practicability is high and the safe sewer well lid is suitable for most road conditions; a filter screen is built-in, so that the dirt on the pavement can be effectively prevented from entering into a sewer, the sewer can be effectively prevented from being blocked and the filter screen can be conveniently exchanged and cleaned.

The invention discloses a method for verifying the performance of the reference electrodes of a soft package battery. The method includes the following steps that: two copper wires with a certain sizeare adopted as substrates and pre-embedded in a battery cell during the production process of the battery cell; after the battery cell is manufactured, the battery cell is adjusted to a certain stateof charge, lithium is electrochemically deposited on the two copper wires one by one with current and time controlled, so that a uniform lithium layer of a certain thickness is obtained, and therefore, two reference electrodes can be obtained; and the reliability and practicality of the two reference electrodes are evaluated through voltage tests between the two reference electrodes and electrochemical performance tests between the two reference electrodes, and a positive pole and a negative pole. With the method of the invention adopted, concerns on the reliability and practicality of the reference electrodes can be fundamentally defused, and a foundation can be laid for the reliability of the electrochemical performance test results of the reference electrodes inside the battery cell.

The invention relates to a multiple-freedom-degree identification-motion-tracing shape-touch-type exoskeleton mechanical glove. The multiple-freedom-degree identification-motion-tracing shape-touch-type exoskeleton mechanical glove comprises a first part and a second part. The first part comprises an operation board, a first bandage and second bandages; the operation board comprises a shell, a rotating disc, a rotating encoder, a counter, a microcontroller, a gyroscope and a lithium battery; the second part comprises first rings, second rings and finger sleeves, wherein the first rings, the second rings and the finger sleeves are hinged; tension sensors and buffer springs are arranged on the first rings; one ends of the tension sensors are electrically connected with the microcontroller, the other ends of the tension sensors are connected with the buffer springs, and the buffer springs are connected with the second rings through pulling cables. The multiple-freedom-degree identification-motion-tracing shape-touch-type exoskeleton mechanical glove is reasonable in structure, and has the advantages of being simple in structure, convenient to use, high in intelligent degree and the like, and the problems that an existing mouse glove is small in function and low in practicability are solved.