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32results about How to "Simple model structure" patented technology

Visual implementation method of BIM model in three-dimensional large scene

The invention discloses a visual implementation method of a BIM model in a three-dimensional large scene, and relates to the field of building information model visualization. The visual implementation method comprises the following steps: firstly, establishing a three-dimensional space division grid according to the dimension of a range of all member models contained in each BIM model; then organizing the member models in each grid block to combine and generate a precise model of a single grid block; recombining and generating a simplified model with consistent shape and appearance according to vein use conditions by using the obtained precise model; and finally, loading and displaying the precise model or the simplified model of the BIM model in the three-dimensional large scene according to a selected display mode and an index number. According to the visual implementation method disclosed by the invention, on the basis of guaranteeing the application of the BIM model, all members of each BIM model are divided according to the three-dimensional space division grid by means of the space grid idea, and the members in the grid are merged to reduce the number of the models of the index and improve the loading efficiency of the BIM model.
Owner:CHONGQING SURVEY INST

Inclined-straight alternating group piles-soil-structure interaction experiment model

The invention discloses an inclined-straight alternating group piles-soil-structure interaction experiment model, belongs to the technical field of geotechnical similar simulation experiments with an aim to solve problems that the inclined-straight alternating group piles-soil-structure interaction experiment model is complex in manufacturing. The inclined-straight alternating group piles-soil-structure interaction experiment model is composed of a soil box, foundation soil, an inclined-straight alternating group pile foundation, a bearing platform and an upper portion structure; the soil box is of a hollow cuboid body provided with an upper opening and is formed by welding of steel plates; the foundation is divided into two layers, the upper layer is clay, and the lower layer is sandy soil; the inclined-straight alternating group pile foundation is formed by two vertical piles and two inclined piles, and pile bottoms are identical in elevation; the bearing platform is a cuboid body cast with concrete, and the vertical piles and the inclined piles are integrally connected through the bearing platform; the upper portion structure is composed of a single-column pier and a counter weight, the single-column pier is of a cylindrical body, two vertically-arrayed threaded rods are embedded in the upper end of the single-column pier, and the counter weight is formed by combination of weights different in weight. The inclined-straight alternating group piles-soil-structure interaction experiment model is simple in structure, convenient to machine and manufacture and high in engineering practicability.
Owner:SHANDONG UNIV OF SCI & TECH

Model for modeling large steam turbine generator with function of static excitation

The invention discloses a model for modeling a large steam turbine generator with a function of static excitation. The model comprises a static excitation subsystem model, an excitation winding subsystem model and a rotor shafting subsystem model; the static excitation subsystem model implemented by a modeling method considers ground capacitance of a neutral point; the excitation winding subsystem model considers the influence of input-output upon an end and excitation winding loss related to frequency; the rotor shaft system subsystem model considers ground capacitance of a rotor shaft and shafting impedance of a steam turbine. The output end of the static excitation subsystem model is connected to the input end of the excitation winding subsystem model. The output end of the static excitation subsystem model is connected to the input end of the excitation winding subsystem model. The output end of the excitation winding subsystem model is connected to the input end of the rotor shafting subsystem model. The static excitation subsystem model of the generator is established, the excitation winding subsystem model and the rotor shafting subsystem model are established, shaft voltage waveform produced by a static excitation system can be acquired for the generator in a simulation manner, and simulation analysis and research for control of shaft voltage is facilitated. The model has the advantages of simple structure, easiness in implementation and high precision.
Owner:STATE GRID CORP OF CHINA +3

Pulse tube refrigerator working condition prediction method and system based on machine learning

The invention relates to a pulse tube refrigerator working condition prediction method and system based on machine learning, and the method comprises the following steps: collecting working condition parameter data during the operation of a pulse tube refrigerator, and dividing the working condition parameter data into two parts: training data and inspection data; building a working condition prediction model by adopting an LM optimized back propagation algorithm based on the training data, and continuously improving the precision of the working condition prediction model through adoption of an iteration method; and inputting the test data into the working condition prediction model, comparing a predicted value calculated by the working condition prediction model with actually measured data, and verifying the precision of the working condition prediction model. The system comprises a data acquisition module, a learning training module and an inspection module. According to the invention, the training learning model is set up by collecting the working condition parameter data during operation of the pulse tube refrigerator, the piston stroke and the pressure amplitude, which are difficult to measure, of the given PTC are accurately predicted, the measurement cost of the method is lower than that of an additionally-installed sensor, and the deviation between a predicted value and an actual value is small.
Owner:ZHANGJIAGANG INST OF IND TECH SOOCHOW UNIV +1

Full-range temperature compensation method of semiconductor gas sensor

The invention discloses a full-range temperature compensation method of a semiconductor gas sensor, belongs to the technical field of gas sensor detection, and solves the defect that a conventional semiconductor gas sensor cannot be used for gas concentration output. The full-range temperature compensation method comprises the following steps of: S1, acquiring a current environment temperature andthe resistance value of the semiconductor gas sensor in the current use environment, and determining the current normalization coefficient according to the calibration resistance value of the semiconductor gas sensor; S2, searching an upper temperature value and a lower temperature value which are close to the current environment temperature in a pre-established temperature compensation database,and generating a normalization coefficient and gas concentration comparison table under the current environment temperature condition by adopting a linear interpolation method; and S3, searching theupper gas concentration and the lower gas concentration which are close to the current normalization coefficient in the step S1 from the normalization coefficient and gas concentration comparison table generated in the step S2, and performing calculating to obtain the gas concentration under the current environment temperature condition by adopting the linear interpolation method.
Owner:GOLDCARD HIGH TECH

Contact network operation and maintenance method and device based on space-time distribution technology

The invention discloses an overhead line system operation and maintenance method and device based on a space-time distribution technology. The method comprises the following steps: acquiring overhead line system bird nest historical data and overhead line system bird nest generation cause factor historical data; on the basis of the acquired historical data, constructing a catenary nest time distribution prediction model, and performing catenary nest time distribution prediction by using the time distribution prediction model; based on the acquired historical data, training to obtain a catenary bird nest cause factor weight prediction model, and performing catenary bird nest spatial distribution prediction by using the catenary bird nest cause factor weight prediction model; and determining and outputting an overhead line system fault prevention and maintenance strategy according to the overhead line system bird nest time distribution prediction result and the overhead line system bird nest space distribution prediction result. According to the method, the bird nest distribution of the contact network is accurately predicted from the two dimensions of time and space, so that more comprehensive and reliable data support is provided for fault prediction and maintenance of the contact network.
Owner:CHENGDU TANGYUAN ELECTRICAL APPLIANCE

Underwater fish target detection method and device based on R2Net, and storage medium

The invention provides an underwater fish target detection method and a device based on R2Net, and a storage medium, and relates to the technical field of target detection. When underwater fish target detection is carried out, the method comprises steps: firstly, acquiring an underwater fish image for training; inputting the underwater fish image for training into a complex network structure of an R2Net model for training to obtain network parameters of the complex network structure of the R2Net model; performing equivalent transformation on the complex network structure of the R2Net model according to the network parameters of the complex network structure of the R2Net model to obtain a simplified network structure of the R2Net model; wherein the simplified network structure of the R2Net model is a Kmax * Kmax equivalent convolution kernel; obtaining a to-be-detected underwater fish image; inputting the to-be-detected underwater fish image into the simplified network structure of the R2Net model to obtain a feature extraction result; and performing underwater fish target detection based on the feature extraction result to obtain an underwater fish target detection result. According to the invention, the R2Net model is used for underwater fish target detection, and high-precision rapid underwater fish target detection is realized.
Owner:DALIAN OCEAN UNIV

Missing mark filling method based on sliding window sparse convolution denoising auto-encoder

The invention provides a missing marker filling method based on a sliding window sparse convolution denoising auto-encoder, which comprises the following steps: firstly, carrying out numerical conversion and one-hot coding on known gene data, dividing a training set and a verification set, then building a sparse convolution neural network model, carrying out missing marker filling on a gene sequence by adopting a segmented sliding window mode, and finally, obtaining a missing marker filling result; through overlapping of windows, central area prediction results with sufficient data features are obtained and spliced, and filling results of edge areas are abandoned. And then the filling precision of the missing mark is calculated, and the hyper-parameter of the neural network is adjusted according to the feedback result of the early-stage training. In practical application, gene filling results of multiple species such as corn and rice show that the filling precision of the method is remarkably higher than that of traditional algorithms such as KNN and SVD. The method is high in filling precision, has the advantages of simple model structure and high training efficiency, and has a wide application prospect in the field of gene sequence analysis.
Owner:YANGZHOU UNIV

Design method of semi-rigid connection joint of low multi-layer fabricated concrete beam column

The invention discloses a design method of a semi-rigid connection joint of a low multi-layer fabricated concrete beam column. The design method comprises the following steps: 1) establishing a beam column semi-rigid joint model on the basis of semi-rigid connection structure analysis; 2) analyzing the failure form of the beam-column semi-rigid joint model, and determining the flexural capacity ofjoint connection; 3) determining the flexural capacity of the beam end concrete section; and 4) determining the flexural capacity of the beam column semi-rigid node. The beam column semi-rigid jointbuilt through the design method is simple in structure, secondary concrete pouring or grouting is not needed, and rapid installation is facilitated. According to the invention, through reasonable design, the damage mode is controllable, and the safety of the connection node is ensured. Different from a traditional cast-in-place frame joint which generates plastic hinge energy consumption through abeam end, the semi-rigid joint adopted by the invention generates energy consumption through a relative corner generated by a beam column, the section of the beam end or a joint connecting piece is mainly damaged, the integrity of the column is kept, and the beam component can be replaced.
Owner:CHINA CONSTR SEVENTH ENG DIVISION CORP LTD +1

Thai and Burmese part-of-speech tagging method for fusing word-syllable pairs by using a local multi-head attention mechanism

The invention relates to a Thai and Burmese part-of-speech tagging method for fusing word-syllable pairs by using a local multi-head attention mechanism, and belongs to the field of natural language processing. The method comprises the following steps: preprocessing a Thai or Burmese text data set; selecting word-syllable pair features as model input in a windowing mode; learning context features from the word-syllable pair sequence by using a local multi-head attention mechanism; and finally, modeling a part-of-speech dependency relationship through a conditional random field, and predicting a part-of-speech tag. Experimental results for part-of-speech tagging data sets of Thai and Burmese show that compared with a current optimal model, the method integrates syllables as morphological features of words, facilitates learning of context features of unknown words, and relieves the influence of wrong tagging of the unknown words on the performance of the model. Moreover, a local multi-head self-attention mechanism is adopted, so that the model can obtain richer local dependence features, and a better tagging result is obtained in a part-of-speech tagging task.
Owner:KUNMING UNIV OF SCI & TECH

Water pollution early warning method, system and equipment based on deep learning and storage medium

The invention discloses a water pollution early warning method, system and device based on deep learning and a storage medium, and the method comprises the steps: setting a plurality of monitoring points in a river channel, and obtaining the water quality data information of each monitoring point; extracting a plurality of pollution characteristic indexes from the water quality data information; constructing an RNN feature fusion model, and inputting the pollution feature indexes into the RNN feature fusion model to generate fusion feature indexes; constructing a water quality monitoring convolutional neural network model, and training the convolutional neural network model; converting the fusion feature index into a fusion feature vector, inputting the fusion feature vector into the trained water quality monitoring convolutional neural network model, and outputting a probability value corresponding to the fusion feature vector; comparing a difference value between the binary probability value and a preset threshold value to judge whether the water quality of the corresponding monitoring point is polluted or not; and the monitoring point module which monitors the water quality pollution carries out early warning. The water pollution monitoring efficiency can be effectively improved, and early warning can be performed in time.
Owner:广东中浦科技有限公司

Furnace top information collecting system of blast furnace based on field bus and information collecting method thereof

The invention discloses a furnace top information collecting system of a blast furnace based on a field bus and an information collecting method of the furnace top information collecting system of the blast furnace, which belong to the field of automatic control in iron-making. The information collecting system provided by the invention comprises an upper computer, a data collecting unit, a processing unit and an executing unit. The upper computer, the data collecting unit, the processing unit and the executing unit are connected orderly. The data collecting unit connects the information collecting points at the furnace top of the blast furnace through the field bus and transmits the collected information to the processing unit finally. The information collecting points at the furnace top of the blast furnace comprise a material distributing device, a stock rod and a valve system. The system and method of the invention simplify the structural mode of current information collection. With a field bus connecting a plurality of devices, connecting cables and costs for installation and maintenance are saved. Meanwhile, the system avoids signal blockage caused by gathering of hundreds of detection signals of detection points and control points at the inlet of the control system, thereby increasing the reliability of the system.
Owner:ANHUI MASTEEL ENG & TECH GRP

Full range temperature compensation method for semiconductor gas sensor

The invention discloses a full-scale temperature compensation method for a semiconductor gas sensor, belongs to the technical field of gas sensor detection, and solves the defect that the existing semiconductor gas sensor cannot be used for gas concentration output. The full-range temperature compensation method of the present invention includes the following steps: S1. Obtain the current ambient temperature and the resistance value of the semiconductor gas sensor in the current use environment, and determine the current normalization coefficient based on the calibrated resistance value of the semiconductor gas sensor; S2, search the upper and lower temperature values ​​similar to the current ambient temperature in the pre-established temperature compensation database, and use the linear interpolation method to generate the normalization coefficient and gas concentration comparison table under the current ambient temperature condition; S3, generate in step S2 Look up the upper and lower gas concentrations that are similar to the current normalization coefficient in step S1 in the normalization coefficient and gas concentration comparison table, and use the linear interpolation method to calculate and obtain the gas concentration under the current ambient temperature condition.
Owner:GOLDCARD HIGH TECH
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