481results about How to "Applicable" patented technology

The invention relates to a temperature rise analytical method for predicting temperature of a permanent magnet in a permanent magnet synchronous motor (PMSM), belonging to the application electrical engineering design field; the method is characterized in that: distributed heat source of a motor is analyzed by a filed-circuit compact coupling method, comprising eddy current loss in the permanent magnet, iron loss in an iron core and copper loss in armature; on the consideration of precision requirements, the coupling analysis of a magnetic field and a temperature filed can be realized by single-way coupling mode. A thermal model of the permanent magnet synchronous motor is built based on a mixing method of a novel equivalent heat network and a finite element, heat parameters are rationally selected by adopting a combining mode of experimental measurement and empirical formula, the heat transferring coefficient and cooling condition of the motor are described completely, a stator and a rotor can be systematically combined by adopting air gap joints in the heat network, the stator and rotor unified temperature rise model is formed, the difficulty of measuring air gap temperature is avoided, material parameters are adopted at the practical working temperature, so as to lead the analysis to be rational; the accurate and optical method for predicting the temperature of the permanent magnet is realized by special correction processing in experimental links; in addition, the design method is used to give suggestions for model selection of the permanent magnet material in the motor.

The invention belongs to the field of cloud computing and network multimedia technology, and particularly relates to a content distribution service resource optimized dispatching method based on multi-cloud architecture. The method comprises the following steps: selecting an initial deployment stage on multi-cloud, and providing a cloud selection initial deployment heuristic algorithm based on charging strategies of a plurality of candidate public service resource providers; in a multi-cloud expansion stage, providing two different multi-cloud expansion methods in a predictable ARIMA model and a cloud outburst scene; and in a multi-cloud switching stage, copying content resources in a newly started data center in batches at a delay as short as possible based on a pre-copied Precopying strategy. By adoption of the content distribution service resource optimized dispatching method, the automatic optimized deployment of a streaming media application in a multi-cloud environment is solved, when the access flow increases abruptly, the volume of the cloud architecture is smartly expanded, and when a certain private cloud data center or a certain public cloud crashes or occurs a serious bandwidth problem, how to quickly switch the cloud service is solved.

The invention discloses a comprehensive assessment method for the operation effect of a power grid side energy storage power station, and the method comprises the steps: constructing an energy storagepower station operation effect assessment index system, and determining a to-be-assessed scheme set; According to the actual operation data of each power station, calculating and extracting evaluation indexes of all schemes in the scheme set to be evaluated of each power station to form an initial decision matrix, and performing standardized processing to obtain a normalized decision matrix; Adopting an analytic hierarchy process to obtain a subjective weight vector of the evaluation index, adopting an entropy weight method to determine an objective weight vector of the evaluation index, andobtaining a comprehensive weight vector of the evaluation index through a game theory combination weighting method; And comprehensively evaluating the operation effect of each power station. The constructed index system has scientificity, applicability and operability, the selected indexes are high in applicability, and calculation is easy; The actual operation effect of the power grid side energystorage power station is comprehensively evaluated from many aspects, and a basis is provided for planning construction, scheduling operation control and the like of a subsequent energy storage project.

The invention provides a login method, a login system and a cloud server. The login method comprises the following steps that the cloud server receives a session request which is transmitted by a first terminal aiming at a preset address; the cloud server obtains first login session information between the cloud server and the first terminal; the cloud server generates a login two-dimensional code according to the first login session information and transmits the login two-dimensional code to the first terminal to display the two-dimensional code through the first terminal; the cloud server receives a login request which is transmitted by a second terminal after the second terminal resolves the login two-dimensional code, wherein the login request contains the first login session information; and the cloud server generates second login session information between the cloud server and the second terminal according to the first login session information, and transmits the second login session information to the second terminal. According to the method provided by the embodiment of the invention, the input cost in the user login process is reduced or even fully eliminated, the user experience is improved, and the rapidness, the security and the applicability are good.

The invention discloses a TFT LCD mura defect detection method based on a hybrid self-adaptive level set model and multi-channel fusion, and belongs to the technical field of LCD mura defect machine vision detection technologies. The invention discloses a mura detection method based on a hybrid self-adaptive model with global information and local information fusion. The hybrid self-adaptive model can increase the curve evolution speed and effectively overcome the interference caused by non-uniformity of the background gray scale; furthermore, the hybrid self-adaptive model can be self-adaptively decreased when getting close to a target region so as to prevent over convergence and realize accurate partitioning of a weak edge. Meanwhile, the invention discloses a detection scheme based on multi-channel fusion of gray-scale maps and s channel images so as to be compatible with detection for different types of mura. According to the TFT LCD mura defect detection method, an ROI region can be accurately extracted, and a texture background of the ROI region is suppressed; the self-adaptive model is used for overcoming the interference caused by the non-uniformity of the background gray scale and solving the difficulty of extremely low contrast ratio of the weak edge, so that accurate partitioning for the edge of a mura defect can be realized.

The invention provides a method and a system for logging in through a mobile terminal, and a cloud server. The method comprises the following steps that the cloud server receives a mobile number and an identification code transmitted by the mobile terminal according to the login command of a user; the cloud server judges whether corresponding account information exists according to the mobile number and the identification code; if the corresponding account information does not exist, the cloud server verifies the mobile terminal and generates account information according to the mobile number and the identification code after pass of verification; and the cloud server generates login session information for the user according to the account information and transmits the session information to the mobile terminal. According to the method in the embodiment of the invention, the input cost in a user login process is reduced and even eliminated, and the user experience is improved; and the method has the advantages of rapidness, safety and applicability.

The invention discloses a link mechanism based multifunctional teaching aid which comprises a main teaching aid driving mechanism, a slider speed describing mechanism, a cam curve describing mechanism, a link speed describing mechanism and a motion certainty analysis mechanism, the main teaching aid driving mechanism, the slider speed describing mechanism and the cam curve describing mechanism are arranged on a main teaching aid support, and the main teaching aid support comprises a horizontal base plate and a rectangular frame fixed on one side of the horizontal base plate. Knowledge points of various mechanical principles are represented through a plurality of link mechanisms arranged on the main teaching support, teaching effect can be improved, and classroom teaching is enabled to be more targeted and applicable.

The invention discloses a clamping deformation resistant jig for machining a large-diameter elbow. Three combined clamping blocks are arranged on a clamping base plate, each combined clamping block consists of an upper clamping block, a lower clamping block, a base plate and connecting bolts, inner sides of the upper clamping blocks and the lower clamping blocks are provided with circular arc-shaped gaps and form a circle consistent with the outer circumference of an elbow to be machined after closed, the upper clamping blocks and the lower clamping blocks are connected and fastened by the connecting bolts, and the base plates are arranged at the bottoms of the lower clamping blocks and are provided with chutes. Lock bolts pass through the chutes on the base plates of the combined clamping blocks and fix the combined clamping blocks on the clamping base plate after being fastened. In the invention, the large-diameter elbow is clamped by adopting a way of directly clamping a pipe blank in a surface-contact manner, thus the elbow does not generate a radial compaction force in the clamping process and is not easy to generate the radial forced deformation and the torsional moment; in addition, the clamping deformation resistant jig disclosed by the invention is applied to machining of a large-diameter thin-wall elbow machine, thereby ensuring the machining precision of the elbow.

The invention discloses scald and burn dressing prepared by a coaxial electrostatic spinning method. The scald and burn dressing is a nanofiber membrane with a core / shell structure, wherein the shell is made of a natural biological high molecular material and the core is a degradable synthetic high molecular material loaded with astragaloside. The mass ratio of astragaloside to the degradable synthetic high molecular material is 1:(2-50). The invention further discloses a preparation method of the scald and burn dressing. The raw materials are easy to get and cheap, and the preparation process is simple, easy to operate and control and can be easily put into large-scale industrial production. The prepared scald and burn dressing has good flexibility and high mechanical strength, and can form a protective fiber felt on the surface of the wound to promote growth of normal skin tissues and reduce formation of scar tissues, thereby curing skin injury.

The invention relates to a load aggregate grouping forecasting method based on a gated circulation unit network, comprising the following steps: clustering user load data by using an adaptive distributed spectrum clustering algorithm, thereby obtaining a plurality of power consumption groups with similar load characteristics and obtaining load characteristic matrices of each group; Three GRU networks are constructed, and three GRU networks are trained by extracting the temporal characteristics of the population to obtain three GRU network forecasting models, and three GRU networks are fused bystochastic forest algorithm to obtain the load forecasting models of each population. The characteristics of the time to be forecasted are inputted into the load forecasting model, the load forecasting values of each group are obtained respectively, and the forecasted values of different groups are summed up to obtain the forecasted values of the final load aggregates. By introducing grouping prediction, depth neural network and model fusion method, the invention can grasp user load characteristic and variation rule, and has high prediction precision and strong applicability.

The invention discloses a high thermal conductivity composite phase change microcapsule and a preparation method thereof. According to the present invention, paraffin stabilized by adopting nanoparticle as the emulsifier and a monomer form an emulsion and polymerization is performed to form the phase change microcapsule adopting the nanoparticles / polymer as the wall material and adopting the paraffin as the core material, wherein the water phase of the emulsion comprises distilled water, modified nanoparticles, an electrolyte and a water-soluble initiator, and the oil phase comprises paraffin, a monomer, a cross-linking monomer and an oil-soluble initiator; the Pickering emulsion preparation technology is used to embed the nanoparticles in the polymer wall layer and arrange densely, such that the effective heat conduction area is large, the thermal conductivity is greatly improved, and the environmental temperature can be effectively regulated; and the phase change microcapsule preparation process is simple, and has characteristics of no volatile organic solvent addition during the preparation process and the treatment process, green environmental protection, no toxicity, good theoretical significance, and good practical value.

The invention discloses a test piece of a concrete direct tensile test, a test piece forming die and integrated equipment. According to the invention, the test piece of the concrete direct tensile test, the test piece forming die of the concrete direct tensile test and the integrated equipment of the concrete direct tensile test are provided; the test piece of the concrete direct tensile test is a square-cross section equal thickness dumbbell-type tension test piece; the test piece forming die of the concrete direct tensile test comprises a side mold framework and a base plate, the side mold framework is formed by performing butt joint on two linked side plates; and the integrated equipment of the concrete direct tensile test comprises a loading framework, a loading mechanism, a test piece tensioning clamper, a test piece deformation test clamp and a data acquisition system. The Test piece of concrete direct tensile test, the test piece forming die and the integrated equipment have the advantages of reasonable design, simple structure, environmental protection, high efficiency and accurate testing.

The invention discloses a rotor non-trial-weight dynamic balancing method suitable for distributed unbalance. The method includes the steps that firstly, on the basis of an established rotor finite element dynamic model, correction of the dynamic model is achieved through experiments and simulation, and then finite element node stress is used for describing the distributed unbalance of a rotor; secondly, dimensions of a dynamic transfer matrix in a describing equation of the distributed unbalance are extended through increase of the test rotating speed, reversibility of the transfer matrix is achieved, and then solution of the distributed unbalance is achieved through matrix inverse operation; finally, precise dynamic balance of the rotor is achieved through a concentrated correction method of the distributed unbalance. According to the rotor non-trial-weight dynamic balancing method suitable for the distributed unbalance, the distributed unbalance can be recognized integrally, and the dynamic balance precision is improved; no test weight is needed in the dynamic balance process, dynamic balance can be completed with the only requirement that the speed is lower than a critical rotating speed, safety of dynamic balance operation is guaranteed, and the requirements of the high-speed rotor are met; the dynamic balance process is concise, and automatic control of computers is achieved conveniently.

The invention discloses a cyanobacterial bloom predicting method based on a non-linear kinetic time-series model, which belongs to the water environment predicting field. The method comprises the following steps: using the blue algae growth rate as a time-varying parameter; creating a non-linear kinetic time-series model for the cyanobacteria growth with double nutrient salt cycling; using the combination of the numerical algorithm and the intelligent evolutionary algorithm, optimizing the constant parameters in the non-linear kinetic time-series model for the cyanobacteria growth; through setting the multivariate time-series model to realize the prediction of the time-varying parameter and the cyanobacteria biomass and through using the bifurcation theory and the central manifold theory to make a nonlinear kinetic analysis of the cyanobacteria growth time-varying system, obtaining the outbreak conditions for a cyanobacteria bloom so as to make an early warning of the bloom outbreak. The method proposed by the invention not only determines the conditions for a cyanobacteria bloom outbreak, but also improves the bloom prediction accuracy, providing an effective reference for an environmental protection department and governance decisions for water environment treatment.

The invention discloses a driver abnormal posture monitoring method based on reinforcement learning. The method comprises the steps that after a driver driving video is acquired, driver face key points and skeleton key points which are far smaller than image pixel points in number are extracted through an OpenPose system, meanwhile, the face key points are subjected to spline interpolation for three times to construct face characteristics, and driver identity recognition is carried out. According to the key frame extraction method, based on a reinforcement learning mode, a corresponding rewardis obtained through an attitude detection model, and an action value function is updated according to each action of the reward and an attitude until a stable key frame extraction strategy suitable for each driver is obtained. Based on the driver dynamic behavior with time and space changes, a machine learning algorithm is used for training to obtain a posture detection model. And a safety earlywarning mechanism with a guiding property is established in combination with a protection motive theory. According to the invention, the real-time performance and accuracy of detection are improved, and the reliability of safety early warning is enhanced.

The invention provides a waist belt capable of adjusting the tightness degree automatically and an adjusting method thereof. The waist belt comprises a waist belt body and a waist belt buckle connected to one end of the waist belt body and further comprises a driving device, a detection device, a control device and a power supply device, wherein the driving device is constructed to drive the waist belt body and the waist belt buckle to conduct relative movement so as to increase or decrease the waistline of the waist belt, the detection device is used for detecting pressure generated by the waist belt, the control device is electrically connected with the driving device and the detection device and used for sending an electric signal controlling the driving direction of the driving device to the driving device according to the pressure detected by the detection device, and the power supply device is used for supplying power. The waist belt has the advantages of being simple in structure, high in applicability and more intelligent.

The invention discloses a green livestock cultivation system. The green livestock cultivation system comprises a cultivation shed, a temperature adjusting unit and a control unit, wherein biological litter in the cultivation shed contains traditional Chinese medicine composition capable of relieving itching and sterilizing; the temperature adjusting unit comprises a V-shaped water tank, a water discharge component and a water return chamber, the water return chamber is formed below a cultivation chamber and includes a first water return chamber and a second water return chamber, the second water return chamber is located below the first water return chamber and communicated with the same, the first water return chamber receives water from a plurality of water leakage holes and forms a flowing water cooling face below the cultivation chamber, and the second water return chamber is communicated to a water storage chamber. The green livestock cultivation system is healthy, environmental friendly, zero in emission, good in stability and high in practicality. The invention further provides a cultivation method which is ecological and environmental friendly in cultivation mode, easy to implement and good in environment factor controllability.

The invention relates to a high-availability industrial Ethernet redundancy method, which comprises the following steps: adding a link redundancy entity on an original data link layer of the Ethernet for managing the sending and receiving of data frames of the Ethernet; setting two network adapter drivers relative to an original protocol stack for managing two network adapter interfaces; connecting a double-connected node which comprises the link redundancy entity and the two network adapter drivers to two independent networks respectively through two network adapters; adding a redundancy control tracker for the data frames on the link redundancy entity for distinguishing the data frames with the same content; sending the data frames which have the same content and is provided with the redundancy control tracker to two mutually-independent networks by the double-connected node through the two network adapters; keeping effective frames and discarding copy frames; and setting up a node table. The method has the characteristics of transparency, self-healing property and compatibility and the like; and the reconstruction thereof is simple, and the safety performance of the system is increased so as to enable the system to have high usability.

The invention relates to a half bridge inverter for dragging a plurality of motors with asynchronism and realizing the rotor frequency control system, comprising a motor group, a rectifier group, a current limiter group, a chopper group, an isolator group, a current limiting smoothing device, a power capacitor, a half bridge inverter, a speed feedback apparatus, a current feedback apparatus, an excitation transformer, an excitation contactor, a control contactor, a switching contactor, a driver, a microprocessor, a A / D convertor and a signal processer, which adopts an invert control theory, the CPU technology and a three phasezero line circuit, works orderly through the PWM signal control chopper output by the driver, further dragging a plurality of motors for real-time online control, realizes the operation of the crane, the fan or the water pump, characterized by simple circuit, small volume, good performance price ratio, high reliability, energy saving and safe operation and the like.

The invention relates to an extraction method of road marking lines, belongs to the field of GIS information technology, and particularly relates to an improved Mean Shift-based extraction method andsystem of road marking lines of Lidar (Light Detection And Ranging) point cloud data. According to the method, a vehicle-mounted Lidar collection system and an inertial measurement system are utilizedto acquire the road point cloud data, adjacency-graph relationships are established for the point cloud data through an octree, and supervoxel clustering is carried out; a Mean Shift algorithm fusedwith multiple features of intensity, normal vectors and the like is utilized to carry out road marking line extraction on the point cloud data; and road marking line points can be accurately extracted, the calculation amount of the Mean Shift algorithm is also greatly decreased at the same time, and thus the purpose of improving precision and efficiency of automated extraction of the road markinglines of the Lidar data is achieved.

The invention discloses a novel asymmetric wettable electrostatic spinning double-layer film comprising a hydrophobic layer and a hydrophilic layer which are in fit connection. The hydrophobic layer is made of a hydrophobic material, the hydrophilic layer is made of a hydrophilic material, and the hydrophobic material and the hydrophilic layer are made by adopting an electrostatic spinning method.The hydrophobic layer is waterproof and resistant to adhesion and bacteria, so that adverse impact on skin wounds caused by intrusion of foreign substances is prevented; the hydrophilic layer enhances hydrophilicity and water retaining performance of the film, thereby being conductive to absorbing exudates of the wounds, maintaining humid environment of the wounds and promoting quick healing of the wounds. The film is prepared through electrostatic spinning technology, and the hydrophobic layer and the hydrophilic layer are high in controllability in design, so that the film can meet all requirements of ideal wound dressings. The invention further discloses a preparation method of the film.

The invention discloses a type of construction slurry for rotary pile drilling. The slurry is a type of compound slurry comprising water, bentonite, hydroxypropyl methyl cellulose solution, clay and soda ash. The construction slurry provided by the present invention can be widely applied in fields of well drilling, rotary pile drilling, and underground diaphragm wall. During a preparing process, the slurry can be mixed quickly and well. The slurry also has advantages of high efficiency, low pollution, low energy consumption and low cost.

The invention provides a method for obtaining a parameter of an overhead line subjected to creep elongation. The method comprises: fitting airborne laser LiDAR point cloud data under an instant working condition to obtain maximum arc sag of a power line under the instant working condition; according to a relation between the maximum arc sag of the power line and a lowest point stress as well as the maximum arc sag of the power line under the instant working condition, calculating the lowest point stress of the power line under the instant working condition; according to the obtained lowest point stress of the power line under the instant working condition, calculating a lowest point stress of the power line under a to-be-calculated working condition; and according to the obtained lowest point stress of the power line under the to-be-calculated working condition, a catenary equation of the power line and the airborne laser LiDAR point cloud data, obtaining a curve of the power line under the to-be-calculated working condition. The power line parameter obtained with the method is high in credibility; uniform standards are provided for measurement of the parameter after the creep elongation; and the method can be used in different working conditions.

The invention relates to a method for testing chemical constituents in coal or coke ash by an X-ray fluorescence spectrum analysis method. The method comprises the following process steps: ashing coals or cokes; fluxing by using a mixed solvent of lithium metaborate and lithium tetraborate to obtain a glass sheet, and directly scanning by using an X-ray fluorescence spectrum analyzer; and testing the content of the chemical constitutes in the coal or coke ash. A sample is made by a glass flux sheet method, the method is easy to operate and high in analysis speed, and the constitutes such as Fe2O3, CaO, MgO, SiO2, Al2O3, TiO2, K2O, Na2O, P2O5, MnO and the like in the coal or coke ash can be analyzed at the same time. The method has the advantages that: the repetitiveness and the reproducibility are higher than those of the national standard method for testing the chemical constituents in the coal or coke ash; and the method has the characteristics of scientificity, advancement, applicability, popularization, short analysis time, high accuracy and repetitiveness, pollution absence and the like.

The invention discloses a method and system for cross-label processing of html rich text data with a format. The received html rich text data with the format are converted into a plain text without the format; service processing is conducted, so that the illegal and illicit unsafe factors such as attack codes, nonstandard writing and sensitive words in the text are eliminated; the processed plain text is restored to the prior format according to the method of best similarity matching effect and converted into correct and safe html rich text data with the format, the html rich text data are displayed on a website, and the safety of the website and the quality of the content are improved.

The invention discloses an SAR image edge detection method based on the multi-scale Wedgelet transformation which relates to the image processing field. The SAR image edge detection method aims at solving the problem that the traditional edge detection method is difficult to suppress the noise and carry out complete and accurate positioning of the edge simultaneously. The procedure is as follows: 1. an SAR image is converted into a gray-scale image which is divided into a plurality of sub-images; 2. the multi-scale Wedgelet decomposition is self-adaptively carried out to each sub-image according to the scale from bottom to top, and the decomposition coefficients of various scales are stored by using a quadtree; 3. the multi-scale Wedgelet approximation is carried out to each sub-image according to the coefficient quadtree obtained by the decomposition, and the multi-scale Wedgelet approximation of the whole image is finally obtained; 4. the edge of the approximated image is detected through edge extraction of gradient operators according to the obtained multi-scale Wedgelet approximated image; 5. the interference of the miscellaneous edges with the length of less than the set threshold on the edge image in the edge image is removed. The SAR image edge detection method has the advantages of fast running time and good edge detection effect, thereby being capable of being used in the edge detection of the SAR image.

The invention discloses a GPS synchronization method of a distributed testing system. The problem that the distributed testing systems are hard to be mutually synchronized since the independent working of each testing point causes the physical dispersion and isolation in the transient signal testing is solved by use of the method oriented to an application of the current mainstream distributed testing system. The method comprises the step of precisely measuring a time difference between a PPS pulse signal produced by a designed GPS synchronization unit and a received tested signal, wherein the time differences respectively measured by the testing points and the UTC time are upload to a computer so as to establish the time unification taking the PPS pulse as the standard on the computer. The GPS synchronization unit designed by the invention comprises a GPS timing module, a control chip FPGA and high-precision clock source, an EEPROM memory, and a USB interface. The GPS synchronization method disclosed by the invention is suitable for the synchronization of the distributed testing system under the outdoor open environment. The prominent problems of low reliability and high work amount in the wire synchronization are solved in a wireless synchronization method; the method is high in precision, simple in operation and easy for engineering realization.

The invention relates to a system that an inverter drives four motors asynchronously and simultaneously to realize the speed regulation of a rotor by variable frequency. The system comprises a motor unit, a rectifier unit, a current limiter unit, a chopper unit, an isolator unit, an active inverter, an A / D converter unit, a signal processor unit, a current detector unit and a voltage detector unit and adopts the inverter control theory and the CPU control technique to conduct the on-line control to the four motors. The voltage output by one inverter is served as the additional counter-electromotive force for each motor; PWM signals outputted by each actuator are used for effectively realizing the continuity and the disconnection of each chopper so as to realize that a crane can fulfill four actions of lifting, variation of amplitude, revolving and traveling. The system provided by the invention simplifies the circuit, reduces the volume and the cost and improves the reliability; when the crane is on the rise, extra power can always be fed back to the motor through the same inverter so as to ensure that when the crane descends, the motor is in a state of power generation and the generated power energy is again fed back to the motor or a power grid through the same inverter, thus realizing energy recovery and conservation.

The invention discloses a microbe effervescent tablet. The effervescent tablet comprises the following components in parts by weight: 1 to 5 parts of probiotics paste and 15 to 40 parts of an acid source, or 1 to 5 parts of probiotics paste and 10 to 40 parts of the acid source and further comprises a protecting agent and other matters. The invention further provides a method for preparing the effervescent tablet; the effervescing technology supports wet granulation, dry granulation and direct powder tabletting, and a suitable processing plan can be selected according to different microbes, different processing manners and different application manners; an auxiliary material for protecting microbe activity is added in the effervescent tablet, so that the preservation time of the microbe effervescent tablet can be prolonged.

An automated system and method for philanthropists to gain access to projects and organizations of interest and, if desired, for projects and organizations to gain access to philanthropists or philanthropic or other funding. The system is remotely accessible so that donor, organization and project managers or team members, and others can gain access to the system from disparate locations, such as through an intranet or the Internet. The system provides tools for organizations to manage information about themselves and projects with which they are connected or in which they are interested. It also provides tools for donor users to manage information about themselves and entities in which they have donated or that they are monitoring. The system provides security features and provides a topology that limits outside access to underlying system data and data facilities. The system is also structured to allow limited access to the public in general in order to promote the system and its use.