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42results about How to "Realize automatic division" patented technology

Method for calculating three-dimensional crack propagation fatigue life of spherical shell surface

The invention belongs to a deep sea engineering technology and particularly relates to a spherical shell surface three-dimensional crack propagation fatigue life calculation method. The method comprises the following steps of establishing a complete spherical pressure-resistant shell initial geometric model; endowing the spherical shell model with material parameters and section attributes, dividing grids, and setting boundary and load conditions; establishing an initial crack model; endowing material parameters to the crack model, defining section attributes, dividing grids and determining the positions of the grids; importing the two models to generate a complete spherical shell finite element numerical model locally containing surface crack defects; solving an initial crack leading edgestress intensity factor value by adopting an M integral method; reading and running a fatigue life calculation model program; setting automatic crack propagation parameters; and obtaining a sphericalshell surface three-dimensional crack propagation fatigue life numerical value based on a self-defined propagation program. According to the method, finite element analysis software and fracture mechanics analysis software are combined to calculate the three-dimensional crack propagation fatigue life of the surface of the spherical shell, and applicability of the method is verified through numerical simulation.
Owner:JIANGSU UNIV OF SCI & TECH

Automatic division method for catchment area of urban drainage pipe network

The invention discloses an automatic division method for a catchment area of an urban drainage pipe network, solves the problem of low division efficiency of an existing catchment area, and belongs to the field of cross application of environmental engineering, visible light remote sensing image semantic segmentation and computer vision. The method comprises the following steps: S1, acquiring a remote sensing image of an urban target area, and constructing a training data set; S2, utilizing a convolutional neural network coupling variant residual network to construct a road network extraction convolutional neural network model, and using a variant residual network as a coding structure of the convolutional neural network; S3, training a road network extraction convolutional neural network model by using the training data set, and determining parameters of the road network extraction convolutional neural network model; S4, inputting the remote sensing image of the city area to be divided into a road network extraction convolutional neural network model, and extracting road network information; and S5, dividing the extracted road network information into water catchment area, and further dividing sub-water catchment areas by using an inverse distance weighted Thiessen polygon method in combination with prior information of rainwater well point distribution.
Owner:HARBIN INST OF TECH

Method and apparatus for dividing provider-defined network location identifier (PID), and application-layer traffic optimization (ALTO) server

The invention discloses a method and an apparatus for dividing a provider-defined network location identifier (PID), as well as an application-layer traffic optimization (ALTO) server and a border gateway protocol (BGP) module, wherein the method comprises the following steps that a route request is sent to the border gateway protocol module by the ALTO server; the route information is returned to the ALTO server after the route request which is sent by the ALTO server is received by the BGP module, the route information carries a route of a terminal and a source autonomous system (AS) serial number; and after the route information which is returned by the BGP module is received by the ALTO server, the terminal is divided into multiple PIDs by the ALTO server in accordance with a preset PID division strategy depending on the route of the terminal as well as the source AS serial number carried in the route information. According to the method and the apparatus, the ALTO server and the BGP module, PIDs are automatically divided with the help of the route information of the BGP and the source AS information, so that the labor is saved; moreover, the operation of PID division is intelligent, has few errors and is simple and feasible.
Owner:ZTE CORP

Substation three-dimensional live-action model establishing method and system

The invention discloses a method for establishing a three-dimensional live-action model of a transformer substation. The method comprises the following steps: (1) acquiring original point cloud data of the transformer substation; (2) preprocessing the original point cloud data of the transformer substation; (3) dividing the preprocessed transformer substation point cloud data into equipment pointclouds with noise points and ground point clouds by adopting an elevation threshold segmentation algorithm; (4) extracting equipment point clouds from the equipment point clouds with the noise pointsby adopting a two-dimensional subspace density difference segmentation method, and thinning the ground point clouds by adopting a one-dimensional subspace density difference; and (5) establishing a three-dimensional live-action model of the transformer substation by adopting the extracted equipment point cloud and the thinned ground point cloud. In addition, the invention also discloses a system for establishing the three-dimensional live-action model of the transformer substation, the system comprises a processing module, and the processing module operates based on the acquired original pointcloud data of the transformer substation. According to the substation three-dimensional live-action model establishing method, noise interference is effectively suppressed, and accurate extraction and positioning of substation equipment are realized.
Owner:STATE GRID EAST INNER MONGOLIA ELECTRIC POWER CO LTD MAINTENANCE BRANCH +1

A method for automatic division of catchment area of ​​urban drainage pipe network

An automatic division method of urban drainage pipe network catchment area solves the problem of low efficiency of existing catchment area division, and belongs to the cross-application fields of environmental engineering, visible light remote sensing image semantic segmentation and computer vision. The present invention includes: S1, obtaining remote sensing images of urban target areas, and constructing a training data set; S2, using a convolutional neural network to couple a variant residual network to construct a road network extraction convolutional neural network model, and the variant residual network as a convolution The coding structure of the neural network; S3. Use the training data set to train the road network to extract the convolutional neural network model, and determine the parameters of the road network to extract the convolutional neural network model; S4. Input the remote sensing image of the city to be divided into the road network to extract the convolution In the neural network model, road network information is extracted; S5, the extracted road network information is divided into catchment areas, combined with the prior information on the distribution of rainwater well points, the inverse distance weighted Thiessen polygon method is used to further divide sub-catchment areas .
Owner:HARBIN INST OF TECH

Method and device for dividing fault ride-through intervals of wind turbine generator

The invention provides a method and a device for dividing fault ride-through intervals of a wind turbine generator. The method comprises the following steps of: determining a wind turbine generator implementation control moment after a power grid fault occurs, a wind turbine generator implementation control moment after the power grid fault is removed, a wind turbine generator control stabilization moment after the power grid fault occurs and a wind turbine generator control stabilization moment after the power grid fault is removed; and dividing the fault ride-through intervals of the wind turbine generator based on the four moments. According to the invention, the fault ride-through intervals of the wind turbine generator can be automatically divided; the universality is high; and the control response characteristic of a simulation model can be verified. Based on fault ride-through actual measurement data of the wind turbine generator, the problems of large automatic interval division errors and poor universality caused by standard fixed time duration can be effectively solved, manual correction workload can be avoided, and the method and the device can be applied to high-voltageride-through tests and low-voltage ride-through tests at the same time.
Owner:CHINA ELECTRIC POWER RES INST +1

Signal processing method of spectrum analyzer and spectrum analyzer

A signal processing method of a spectrum analyzer and the spectrum analyzer, the spectrum analyzer includes a radio frequency scanning module, a data acquisition module, a detection module, a display module and a control processing module, wherein the control processing module obtains the endpoints of a plurality of predefined scanning frequency bands Frequency and receive the scanning parameters input by the user, and determine the endpoint frequencies of multiple detection frequency bands according to the endpoint frequencies and scanning parameters of multiple scanning frequency bands. When it is detected that the endpoint frequency of the scanning frequency band does not coincide with the endpoint frequency of any detection frequency The endpoint frequency of the scanning frequency band sent to the radio frequency scanning module is adjusted, the endpoint frequency of the scanning frequency band is sent to the radio frequency scanning module, and the endpoint frequency of the detection frequency band is sent to the detection module, so that the radio frequency scanning module treats it according to the scanning frequency band determined by the control processing module The test signal is scanned so that the actual scanning frequency band matches the frequency range of the entire RF scanning and the data processing requirements configured by the user.
Owner:SHENZHEN CITY SIGLENT TECH

Automatic process step design method based on knowledge reasoning

The invention discloses an automatic process step design method based on knowledge reasoning, and the method comprises the following steps: 1, checking process basic information, and checking whether inherited or created process level information meets the requirements of a current process or not; 2, automatically dividing process steps, taking out the procedure nodes determined in the step 1 one by one, and automatically calculating the number of process steps of the current procedure according to the precision requirement and the procedure cutting thickness; step 3, processing parameter recommendation and adjustment: selecting cutting parameters according to a parameter selection strategy and enterprise requirements, verifying the cutting parameters, and adjusting the parameters according to a parameter adjustment algorithm; and step 4, revision and analysis of the three-dimensional technological procedure: after the system automatically completes the design of the process steps, looking up the result and revising same interactively, and publishing the revised technological procedure at the same time. The method can automatically determine the number of the process steps and recommend and adjust the processing parameters, so that the intelligence and automation level of the process compiling is improved, and the efficiency and quality of the process compiling are improved.
Owner:AVICIT CO LTD

Signal processing method of spectrum analyzer and spectrum analyzer

The invention discloses a signal processing method of a spectrum analyzer and the spectrum analyzer, the spectrum analyzer comprises a radio frequency scanning module, a data acquisition module, a detection module, a display module and a control processing module, and the control processing module obtains the endpoint frequencies of a plurality of predefined scanning frequency bands and receives scanning parameters input by a user; and according to the endpoint frequencies of the plurality of scanning frequency bands and the scanning parameters, the endpoint frequencies of the plurality of detection frequency bands are determined, and when it is detected that the endpoint frequencies of the scanning frequency bands do not coincide with the endpoint frequency of any detection frequency band, the endpoint frequencies of the scanning frequency bands sent to a radio frequency scanning module is adjsuted, the endpoint frequency of the scanning frequency band is sent to the radio frequency scanning module, and the endpoint frequency of the detection frequency band is sent to the detection module, so that the radio frequency scanning module scans the signal to be detected according to the scanning frequency band determined by the control processing module; therefore, the actual scanning frequency band is matched with the frequency range of the whole radio frequency scanning and the data processing requirement configured by the user.
Owner:SHENZHEN CITY SIGLENT TECH
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