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34results about How to "Meet actual application needs" patented technology

Solid-state polymer electrolyte and preparation method thereof

The invention relates to a preparation method of a modified mesoporous silica-doped solid-state polymer electrolyte for a lithium-ion battery. The method comprises the following steps: dissolving polymer matrix into a solvent to prepare a polymer solution; with lithium perchlorate (LiClO4) as a lithium salt, dispersing the modified mesoporous silica into the obtained polymer solution; carrying out dispersing and casting to form a film; and after the solvent volatilizes, obtaining a composite polymer film, namely the composite polymer electrolyte for the lithium-ion battery. The method is simple to operate; the solid-state polymer electrolyte with high mechanical property and high ionic conductivity is easy to obtain; and the solid-state polymer electrolyte has a wide application prospect in the aspect of a power lithium-ion battery car.
Owner:SHANDONG YUHUANG NEW ENERGY TECH

Artificial synthesizing method of training samples and verification code recognizing method based on samples

The invention discloses an artificial synthesizing method of training samples and a verification code recognizing method based on the samples. The artificial synthesizing method of the training samples comprises the following steps: S1, generating a verification code lexicon; S2, generating a background photo gallery; S3, screening rectangular background blocks; S4, collecting typeface sets; S5, randomly matching words and expressions with the background blocks; and S6, taking the background blocks which have been written with the words and expressions as samples. The invention further discloses a verification code recognizing method based on the training samples. The verification code recognizing method based on the training samples comprises the following steps: S1, feature extraction; S2, sequence calibration; and S3, correction of recognition results. The training samples are acquired by a mode of synthesizing samples artificially, only recognized character types need to be set, but samples in the corresponding types can be generated, good effect can be achieved by adding a small amount of actual website samples, and a large number of labors and financial resources for sample collection are reduced while the samples are diversified.
Owner:厦门美亚商鼎信息科技有限公司

TCM complexion automatic sorting method applying superficial layer neural network

A TCM (Traditional Chinese Medicine) complexion automatic sorting method applying a superficial layer neural network belongs to the field of computer vision. The designed superficial layer neural network has five layers and adopts three different layer structures including an input layer, a characteristic extraction layer and an output layer. The input layer is composed of a convolution layer and a rectified linear unit (ReLU). The characteristic extraction layer is composed of three layers of network, wherein each of the first two layers is composed of a convolution layer and a ReLU activation function; one of the convolution layer and the ReLU is subjected to batch normalization and a pooling layer is added behind the second ReLU of the characteristic extraction layer; the third layer of the characteristic extraction layer is a whole connection layer connected with a ReLU in a followed manner. The output layer is composed of the whole connection layer and is provided with a followed softmax sorter. The method provided by the invention is distinctively advantaged in sorting precision and has invariance property in distortion such as zooming, translation, rotation and the like, is high in robustness and capable of improving sorting precision effectively. Therefore, the depth learning theory is applied to TCM face diagnose objectivity study.
Owner:BEIJING UNIV OF TECH

Multi-range capacitance measurement circuit, device and method

The invention relates to a multi-range capacitance measurement circuit, device and method. The multi-range capacitance measurement circuit comprises a square wave generation circuit, a waveform shaping circuit, a singlechip microcomputer minimum system and a display, wherein the square wave generation circuit comprises an NE555 chip, a resistor network and a reference capacitor; the resistor network comprises a resistor matrix and a first multi-way switch connected with the resistor matrix; the resistor matrix comprises multiple resistors with different resistance values; the first multi-way switch comprises multiple first switches connected with the resistors one by one and a first control chip for controlling the multiple first switches; the multiple resistors are connected in parallel. According to the multi-range capacitance measurement circuit, a singlechip microcomputer controls the first control chip to turn on different first switches, to change connected resistors of the resistor matrix and adjust the range of the multi-range capacitance measurement circuit, so as to measure to-be-measured capacitors with different capacitance values; the multi-range capacitance measurement circuit is simple, easy and convenient to operate and adjustable in measuring range, and can meet an actual application requirement.
Owner:HUBEI ENG UNIV

Giant dielectric constant strontium titanate dielectric ceramic and preparation method thereof

The invention belongs to the technical field of ceramic materials, and discloses a giant dielectric constant strontium titanate dielectric ceramic and a preparation method thereof. The chemical formula of the ceramic is Sr1-xEuxTiO3, wherein x is more than or equal to 0.01 and less than or equal to 0.015. The preparation method comprises the following steps: proportioning SrCO3, Eu2O3 and TiO2, mixing, and carrying out ball milling; drying the ball-milled raw materials, sieving, pre-sintering at 1000 DEG C for 3 hours, and mixing and ball-milling the pre-sintered powder; drying and sieving the ball-milled raw materials, adding a binder into the obtained powder, sieving, granulating, pressing into a green body, and discharging glue; and sintering the blank body after complete glue removal at 1400 DEG C in N2 atmosphere, and preserving heat for 6 hours to obtain the final sample. According to the invention, the Sr1-xEuxTiO3 dielectric ceramic is prepared through doping modification by adopting a traditional solid-phase method, the dielectric constant is improved, the lower dielectric loss is kept, and the dielectric property of the ceramic material is further improved, so that the actual application requirements are better met.
Owner:TIANJIN UNIV

High-spectral-efficiency sparse code multiple access method of low-earth-orbit satellite satellite satellite-ground link

The invention discloses a high-spectral-efficiency sparse code multiple access method of a low-earth-orbit satellite satellite satellite-earth link, relates to the technical field of information and communication, and aims to solve the problem of spectrum resource shortage of the Internet of Things of low-earth-orbit satellites. The invention aims to solve the problem of spectrum resource shortageof the low-earth-orbit satellite Internet of Things. A high spectral efficiency sparse code multiple access method of a low earth orbit satellite satellite satellite-ground link is provided. According to the method, a high spectral efficiency frequency division multiplexing technology is used for replacing traditional orthogonal frequency division multiplexing, carrier spacing is compressed at asending end, wide-area coverage of massive terminal users and efficient utilization of spectrum resources are achieved, and compared with a traditional sparse code multiple access method, the method has higher spectral efficiency performance.
Owner:HARBIN INST OF TECH

Preparation method of high-strength polyvinyl alcohol hydrogel film

The invention provides a preparation method of a high-strength polyvinyl alcohol hydrogel film. The method comprises the following steps: taking polyvinyl alcohol as a raw material, firstly carrying out polyvinyl alcohol carboxylation, and adding gelatin and chitosan to achieve the purpose of synergistic interaction, constructing a polyvinyl alcohol physicochemical cross-linking system, and preparing the high-strength multi-network cross-linked hydrogel film. Due to the addition of the gelatin and the chitosan, the polyvinyl alcohol hydrogel film has higher strength and elongation, and the hydrogel film is endowed with unique antibacterial property and biocompatibility. The obtained polyvinyl alcohol hydrogel film has high tensile strength, has excellent moisturizing performance and antibacterial performance in a physiological environment, and can be used in the aspects of medical dressings and the like.
Owner:HARBIN ENG UNIV

Motor experience distortion index test method, electronic equipment and storage medium

The invention discloses a method for testing a motor experience distortion index. The method for testing the motor experience distortion index comprises the following steps: acquiring a motor parameter, wherein the motor parameter is a linear parameter or a nonlinear parameter; selecting a specified frequency of the distortion test and generating a single-frequency voltage signal with the specified frequency; predicting the predicted displacement of the motor vibrator under the excitation of the single-frequency voltage signal according to the linear parameter or the nonlinear parameter of themotor; adjusting the amplitude of the single-frequency voltage signal according to the target displacement value of the motor oscillator and the maximum value of the predicted displacement so as to enable the maximum value of the predicted displacement to approach the target displacement value; acquiring vibration data of the motor vibrator under the excitation of the single-frequency voltage signal after amplitude adjustment; and calculating the motor distortion from the vibration data. Compared with the prior art, the method for testing the experience distortion index of the motor can reflect the distortion condition of the motor in practical application.
Owner:AAC TECH PTE LTD

Multichannel physiological signal somatosensory gesture recognition method based on PSO-PCA-SVM

The invention discloses a multichannel physiological signal somatosensory gesture recognition method based on PSO-PCA-SVM. The method comprises the steps: 1, collecting a human body physiological signal original sample; 2, extracting physiological signal features; 3, extracting key features through principal component analysis; 4, establishing a multi-channel physiological signal somatosensory gesture SVM recognition model; 5, performing PSO optimization training on a multichannel physiological signal somatosensory gesture PCA and SVM recognition model. The invention provides a multichannel physiological signal somatosensory gesture recognition method based on PSO-PCA-SVM. After the method is used, the recognition precision is high, the real-time performance is good, and the recognition robustness is good.
Owner:JINLING INST OF TECH

Method for preparing multi-grain-size heterogeneous aluminum alloy plate through composite rolling

The invention discloses a preparation method for preparing a multi-grain-size heterogeneous aluminum alloy plate through composite rolling. The method comprises the four specific procedures of surfacerolling deformation, homogenizing annealing treatment, non-uniform rolling deformation and recrystallization annealing treatment. According to material performance requirements, computer programmingis utilized, rolling tool paths of different patterns are compiled, and aluminum alloy plates of different thicknesses are obtained; the unequal-thickness aluminum alloy plate are fully annealed, so that the microstructure of the unequal-thickness aluminum alloy plate recovers to an annealed structure before deformation; non-uniform rolling deformation is carried out on the annealed unequal-thickness aluminum alloy plate to obtain an aluminum alloy rolled plate with a flat surface and uniform thickness; and the multi-grain-scale heterogeneous aluminum alloy plate is obtained through recrystallization annealing.
Owner:NANJING UNIV OF SCI & TECH

End-side-cloud cooperative data transmission method for AGV scene movement of intelligent factory

ActiveCN112153595AReduce computing and storage pressureReduce task response timeParticular environment based servicesTransmissionSmart factoryData transmission time
The invention discloses an end-side cloud cooperative data transmission method for AGV scene movement of an intelligent factory, and relates to the technical field of AGVs of intelligent factories. The method comprises the following steps: establishing a mobile terminal side cloud collaborative architecture for a delay tolerant mobile sensor network DTMSN composed of a wireless sensor, an AGV andan AGV scheduling system AGVS in an intelligent factory; fusing AGV, end-side cloud collaboration and DTMSN technologies; considering the influence of the movement of an end (wireless sensor) and an edge (AGV) on an end-edge cloud architecture network structure and a data transmission effect; improving an existing DTMSN algorithm, and using an idea that simulated quenching accepts inferior solutions according to probabilities for replacing a staged method to select intermediate nodes; combining data transmission task characteristics, node density, node speed, node type and other factors into autility function. Therefore, the data transmission quality is improved, the data transmission time delay and energy consumption are reduced, the feasibility and effectiveness of mobile terminal sidecloud cooperation are ensured, the computing resources of the AGV are fully utilized, and the task response time and the computing storage pressure of the cloud are reduced.
Owner:SHANGHAI JIAO TONG UNIV

Sum-difference beam sparse array synthesis method for broadband wide-angle beam scanning

The invention provides a sum-difference beam sparse array synthesis method for broadband wide-angle beam scanning, and relates to array antenna pattern synthesis and antenna array element position optimization. The method comprises the following steps: step 1, introducing a concept of'design frequency ', and converting a sum-difference beam array synthesis problem of broadband wide-angle beam scanning into a sum-difference beam array synthesis problem based on a single frequency point; step 2, carrying out initial layout on the array elements by adopting a power series increasing (RPS) analysis method; and step 3, performing multi-step array element position perturbation optimization at the'design frequency 'by adopting an iterative convex optimization method, and setting a plurality of constraint conditions in the optimization process, such as a sidelobe level constraint of a sum beam and a difference beam, a difference beam slope constraint in a target direction, an array element position perturbation quantity amplitude constraint, an array element minimum spacing constraint and the like. According to the method, the sum beam and the difference beam with the broadband wide-angle beam scanning performance can be generated at the same time by optimizing the array element layout, and a plurality of constraint conditions are set to meet actual application requirements.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Remote monitoring method and system for automatic operation of numerical simulation

The invention relates to the technical field of information processing, in particular to a remote monitoring method and system for automatic operation of numerical simulation. The method for automatic operation of numerical simulation comprises the steps that a local server automatically logs in to a remote super computer without a password; the local server uploads and submits an obtained data file needed by numerical simulation and a numerical simulation operation to be executed to the remote super computer, and the remote super computer executes the numerical simulation operation to carry out numerical simulation; during numerical simulation, the local server regularly detects whether numerical simulation normally works in the remote super computer or not according to the set time interval, wherein if not, the numerical simulation operation not normally operating is submitted again. According to the remote monitoring method and system for automatic operation of numerical simulation, labor cost of the numerical simulation can be reduced, the loss caused by the operation running error can be reduced, the numerical simulation efficiency can be improved, and the actual application requirement can be better met.
Owner:CHINESE ACAD OF METEOROLOGICAL SCI

Cuprous ion selective electrode and cuprous ion measuring method thereof

The invention discloses a cuprous ion selective electrode. The cuprous ion selective electrode is a mixed crystal membrane electrode with a selective sensitive membrane consisting of cuprous sulfide and silver sulfide, wherein the weight of the cuprous sulfide accounts for 40-60% of the total weight of the selective sensitive membrane, and the weight of the silver sulfide accounts for 60-40% of the total weight of the selective sensitive membrane. The cuprous ion selective electrode can be used for quickly and accurately measuring the activity of cuprous ions, the needed time is only several minutes, the relative error is smaller than or equal to 10%, the detection limit is 1*10-6 to 1*10-2 mol / L, and the actual application need can be well met.
Owner:GUANGZHOU KECHENG ENVIRONMENTAL PROTECTION TECH

Traditional Chinese medicine tongue image tooth mark automatic detection method based on convolutional neural network multi-scale feature fusion

The invention discloses a traditional Chinese medicine tongue image tooth mark automatic detection method based on convolutional neural network multi-scale feature fusion. The method comprises steps: using convolutional neural network VGG16 as a basic network to extract features; providing a multi-scale feature fusion module and a feature enhancement module which are respectively used for fusing different scale features of the convolutional neural network and enhancing the fused features to form four detection layers; and finally, respectively carrying out tooth mark detection on the four detection layers by adopting an SSD method, and fusing all detection results by adopting a non-maximum suppression method to obtain a final tooth mark detection result. The method can improve the feature expression capability of each detection layer, achieves the automatic and accurate detection of the tooth marks in the traditional Chinese medicine tongue image, has obvious advantages in the detection precision compared with a traditional method, and can meet the actual application demands. According to the invention, the complexity of a network model is greatly reduced. The method has obvious advantages in detection precision, and can meet actual application requirements.
Owner:BEIJING UNIV OF TECH

Multi-channel physiological signal somatosensory posture recognition method based on GS-LSSVM

The invention discloses a multi-channel physiological signal somatosensory posture recognition method based on a GS-LSSVM. The method comprises the steps: 1, collecting a human body physiological signal original sample; 2, performing noise reduction through a wavelet threshold method; 3, extracting the physiological signal features; 4, establishing a multi-channel physiological signal somatosensory posture LSSVM recognition model; 5, carrying out PSO optimization training on a multi-channel physiological signal somatosensory posture SVM recognition model; 6, carrying out somatosensory posturerecognition model test based on the optimal multichannel physiological signals. The multi-channel physiological signal somatosensory posture recognition method based on the GS-LSSVM is high in recognition precision, good in real-time performance and good in recognition robustness.
Owner:JINLING INST OF TECH

Preparation method of double-phase heterogeneous reinforced weldless box

The invention provides a manufacturing method of a double-phase heterogeneous reinforced weldless box. The method comprises four processes as follows: punch forming of a box body, stress relief annealing treatment, installation of a reciprocating hydraulic deformation device and reciprocating hydraulic deformation. The method is characterized in that stainless steel sheets are punched with a punchforming technology, and a main body of a box part is obtained; a residual deformation structure in the part after the punch forming is eliminated by the stress relief annealing treatment, and deformation stress is restored; and for the process of reciprocating hydraulic deformation, martensitic transformation of an austenite structure at the part is induced by strain in a loading area of the box,box strength is increased by the martensitic structure, the austenite structure at the other part is retained, and therefore, the box has good toughness.
Owner:NANJING UNIV OF SCI & TECH

Method and device for determining actual position of object in fisheye camera image

The invention discloses a method and device for determining the actual position of an object in a fisheye camera image. The method comprises the following steps: determining an included angle between the positive direction of the fisheye camera image and the positive direction of a world coordinate system; determining a fitting polynomial of the installation height of the fisheye camera and the coordinate of the object in the fisheye camera image with respect to the actual distance between the coordinate of the object in the fisheye camera image and the imaging center of the fisheye camera image; and calculating the actual position of the object in the fisheye camera image under the world coordinate system. According to the invention, the actual position of the object in the image in the real world coordinate system is efficiently and accurately estimated. The mounting plane of the fisheye camera is parallel to the ground below the mounting position of the fisheye camera; meanwhile, the included angle between the positive direction of the image of the fisheye camera and the positive direction of the world coordinate system and the installation height of the fisheye camera are determined by means of the calibration plate. The efficiency is high.
Owner:上海迈外迪网络科技有限公司

An automatic classification method of complexion in traditional Chinese medicine using shallow neural network

ActiveCN107516312BRealization of complexion classificationAvoid manual feature selection processImage enhancementImage analysisSkin complexionActivation function
A method for automatically classifying complexion in traditional Chinese medicine by applying a shallow neural network belongs to the field of computer vision. The designed shallow network has 5 layers in total, using three different layer structures, which are input layer, feature extraction layer, and output layer. The input layer consists of a convolutional layer and a rectified linear unit; the feature extraction layer consists of a 3-layer network, each of the first two layers consists of a convolutional layer and a ReLU activation function, between the convolutional layer and the ReLU A batch normalization, and add a pooling layer after the second ReLU of the feature extraction layer, the third layer of the feature extraction layer is a fully connected layer, followed by a corrected linear unit ReLU; the output layer consists of a fully connected layer , followed by a softmax classifier. The invention has obvious advantages in classification accuracy, is invariant to distortions such as zooming, translation, and rotation, has strong robustness, can effectively improve classification accuracy, and applies the theory of deep learning to the objectivity research of face-to-face diagnosis in traditional Chinese medicine. .
Owner:BEIJING UNIV OF TECH

Active defense guidance method of three-body confrontation strategy based on differential game

PendingCN114003050AEfficient solutionConsider high couplingAttitude controlControl objectiveMissile
The invention discloses an active defense guidance method of a three-body confrontation strategy based on differential game, and the method specifically comprises the following steps of: establishing a three-body confrontation differential game guidance kinematics equation; establishing an active defense guidance system with a feedback form in an active defense scene based on the established three-body confrontation differential game guidance kinematics equation, wherein the input of the active defense guidance system comprises feedforward control and feedback optimal control; the active defense guidance system controls a target missile not to be hit by an attack missile and controls a defense missile to effectively intercept the attack missile. According to the method, a nonlinear missile model is adopted for research, and the characteristics of high coupling, complex nonlinearity and the like of the missile are fully considered. The designed differential game guidance law better meets the requirements of practical application.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Cuprous ion selective electrode and cuprous ion measuring method thereof

The invention discloses a cuprous ion selective electrode. The cuprous ion selective electrode is a mixed crystal membrane electrode with a selective sensitive membrane consisting of cuprous sulfide and silver sulfide, wherein the weight of the cuprous sulfide accounts for 40-60% of the total weight of the selective sensitive membrane, and the weight of the silver sulfide accounts for 60-40% of the total weight of the selective sensitive membrane. The cuprous ion selective electrode can be used for quickly and accurately measuring the activity of cuprous ions, the needed time is only several minutes, the relative error is smaller than or equal to 10%, the detection limit is 1*10-6 to 1*10-2 mol / L, and the actual application need can be well met.
Owner:GUANGZHOU KECHENG ENVIRONMENTAL PROTECTION TECH

Mechanical spraying construction process for light plastering gypsum

The invention discloses a mechanical spraying construction process for light plastering gypsum. The problem that traditional cement mortar is insufficient in performance is solved by adopting the novel material of the light plastering gypsum. Compared with the prior art, the mechanical spraying construction process conforms to actual application conditions, meets the requirements for constructionquality and construction period, and saves labor cost and energy. The method comprises the steps of construction preparation, base layer cleaning, paying-off and dotting, cake pasting and rib punching, light plastering gypsum preparation, plastering construction and clearing. The mechanical spraying construction process is scientific and reasonable in design and convenient to use, is applied to the special mechanical spraying construction process for the light plastering gypsum, can effectively improve the construction efficiency, save a large amount of construction period, reduce the maintenance cost and the like on the premise of ensuring the construction quality, achieves the social excellent benefits of energy conservation, environmental protection and the like, and is suitable for being widely applied and popularized.
Owner:CHENGDU NO 1 CONSTR

A device-edge-cloud collaborative data transmission method for smart factory AGV scene movement

ActiveCN112153595BReduce computing and storage pressureReduce task response timeParticular environment based servicesTransmissionSmart factoryMobile end
The invention discloses a device-edge-cloud collaborative data transmission method for intelligent factory AGV scene movement, and relates to the technical field of intelligent factory AGV. For the delay-tolerant mobile sensor network DTMSN composed of wireless sensors, AGV, and AGV dispatching system AGVS in smart factories, establish a mobile terminal-edge-cloud collaboration architecture; integrate AGV, terminal-edge-cloud collaboration, and DTMSN technology; consider terminal (wireless sensor) and edge ( The impact of AGV) movement on the network structure of the device-edge-cloud architecture and the effect of data transmission; improve the existing DTMSN algorithm, and use the idea of ​​analog quenching to accept inferior solutions by probability to replace the staged method for the selection of intermediate nodes; the data transmission task Factors such as its own characteristics, node density, node speed, and node type are combined into the utility function; thereby improving data transmission quality, reducing data transmission delay and energy consumption, ensuring the feasibility and effectiveness of mobile terminal edge-cloud collaboration, and making full use of AGV's computing resources reduce task response time and cloud computing and storage pressure.
Owner:SHANGHAI JIAOTONG UNIV

Cerium-rich rare earth permanent magnet using yttrium and preparation method thereof

ActiveCN107275027BSolve the problems that cannot be applied to rare earth permanent magnetsImprove magnetismInductances/transformers/magnets manufactureMagnetic materialsStructure of the EarthRare earth
The invention discloses a cerium-rich rare earth permanent magnet applying yttrium and a preparation method of the permanent magnet. The prepared rare earth permanent magnet contains a RE-Fe-B principle phase and one or more yttrium-added cerium-rich principle phases. After different main phases are subjected to ingredient design, blending and flour milling separately, the corresponding main phase alloy powder is uniformly mixed in proportion, then, magnetic field profiling, sintering and heat treatment are conducted, and the rare earth permanent magnet which is of a multiple principle phase structure is obtained. By optimizing a sintering and heat treatment technology, the magnetic dilution effect is relieved, and the comprehensive magnetic performance of the magnet is improved. Accordingly, a large amount of application of the yttrium element in the rare earth permanent magnet is achieved, the performance of the permanent magnet can meet the commercial standard, the cost of the raw materials is lowered, and meanwhile the market requirements are met.
Owner:ZHEJIANG UNIV

Gel electrolyte and preparation method thereof, and sunlight-driven self-charging supercapacitor and self-charging method thereof

The invention provides a gel electrolyte, a preparation method of the gel electrolyte, a sunlight-driven self-charging supercapacitor and a self-charging method of the sunlight-driven self-charging supercapacitor, and relates to the technical field of gel electrolytes. The gel electrolyte provided by the invention has relatively high cation migration characteristic, low thermal conductivity and low specific heat capacity. The invention further provides a sunlight-driven self-charging supercapacitor which comprises a first photo-thermal conversion film electrode, a second photo-thermal conversion film electrode and the gel electrolyte loaded between the first photo-thermal conversion film electrode and the second photo-thermal conversion film electrode, wherein the first photo-thermal conversion film electrode and the second photo-thermal conversion film electrode are oppositely arranged in parallel; the exposed part of the gel electrolyte is packaged with a packaging material; the first photo-thermal conversion film electrode and the second photo-thermal conversion film electrode are respectively bonded with a metal lead and are used for being externally connected with a load. The super capacitor provided by the invention can complete self-charging only by means of sunlight without the help of an external auxiliary charging system, so that direct and efficient conversion from solar thermal energy to electric energy and storage and utilization are realized.
Owner:LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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