29results about How to "High practical application value" patented technology

The invention discloses a method for inverting key parameters in an underground water pollutant biodegradation numerical model based on a neural network algorithm. Carrying out preprocessing and refined dimension reduction on the data, and processing high-dimensional multi-scale data; building a multilayer neural network architecture under a physical information neural network framework, embedding a related reaction equation of a pollutant natural attenuation process, and coupling a biochemical reaction mechanism and a data driving model; a neural network model is trained, errors in the training process are calculated, and the accuracy of an inversion result is improved by using a sub-when optimization algorithm; integrating observation data and a model prediction result, determining final parameter setting of a numerical model, and carrying out underground water damage real object quantification; comparative verification of a neural network parameter inversion model is carried out, and feasibility and accuracy of the parameter inversion method are ensured. According to the method, the problem that the key parameters of the biodegradation numerical model are difficult to accurately invert in the real object quantification process of underground water pollution under complex geological conditions is solved.

The invention relates to the technical field of fault detection for a wireless communication network, and discloses a fault detection method for the wireless communication network. By collecting data of base station signal strength, network delay, data packet loss rate and user equipment signal quality, the problem of insufficient fault detection caused by a single index is solved. Through multi-dimensional data acquisition, the system can comprehensively evaluate network performance, the fault detection accuracy is improved, and different fault types can be effectively identified especially in a complex fault mode. By storing the data according to the time sequence, the problem of time sequence chaos is avoided, and accurate detection of time-varying faults is ensured. The comprehensive data vector generated by each time of sampling comprises a plurality of network performance indexes, so that the fault detection and positioning capability is improved. Abnormal values are eliminated through data preprocessing, the data quality is ensured, an accurate basis is provided for subsequent analysis, and the reliability of a detection result is ensured.

The invention discloses a 3D target detection method and system based on binocular vision and open vocabularies, and relates to the technical field of target detection. The method comprises the following steps: calculating pixel features of each image by adopting an open vocabulary 2D detection model; pixel features of the left view and the right view are aggregated to each three-dimensional point; obtaining a parallax estimation map based on the pixel features of the left and right views; introducing a time aggregation guide parallax consistency constraint to obtain a depth parallax estimation map; converting the depth parallax estimation map into a 3D point cloud, and extracting features to obtain 3D features; and carrying out correlation integration on the text features, the 2D fusion feature vectors and the 3D features by utilizing object-level image guide detection loss, object-level cross comparison alignment and object-level self-comparison learning to obtain a three-dimensional target detection model, realizing three-dimensional target detection and distinguishing different target objects. According to the invention, accurate detection and distinguishing of the target can be realized, so that the flexibility and universality of 3D target identification are improved.

The invention belongs to the field of data mining in deep learning, and particularly relates to a time series prediction system based on a causal relationship. The time series prediction method comprises a causal inference and enhancement algorithm suitable for time series data; a causal-frequency domain attention module based on a graph attention mechanism and Fourier transform; the invention discloses a decoder based on a multi-layer perceptron. According to the method, the modeling capability of the existing multivariable time sequence prediction method on the dependency relationship between the sequence variables and the feature extraction capability on the long-time sequence data can be improved, and the error of the prediction result is effectively reduced.

The novel beacon vessel comprises a base and further comprises a water flow power generation device and a solar power generation device which are installed on the base, the base is arranged to be cylindrical, a notch is formed in the middle of the base, an impeller of the water flow power generation device overhangs in the notch to rotate, and the cylindrical base rotates in real time in the water flow direction. A solar power generation device is mounted on the top surface of the base at the rear part of the notch, and is provided with a foldable turnover mechanism, so that a solar panel of the solar power generation device is always positioned at the optimal sunlight receiving angle; multi-source power generation is achieved through the water flow power generation device and the solar power generation device, redundant electric energy is stored for standby application and delivery while power is supplied to the beacon light and other electric equipment on the device, real-time data acquisition is achieved through the camera and the light induction sensor, and the device is simple and compact in structure, reliable in operation, low in cost, convenient to install and high in practicability. Power generation is stable and efficiency is high.

The invention belongs to the technical field of groundwater reserve prediction, and particularly relates to a physical logic driven groundwater reserve intelligent prediction method and system. Comprising the following steps: performing complementation and physical verification on multi-source heterogeneous observation data related to groundwater reserves in a target area to obtain a physical verification complete data set conforming to physical logic; performing space-time decoupling causal contribution analysis on the physical verification complete data set to generate a causal contribution matrix; according to the causal contribution matrix, constructing and training a physical constraint emergence type space-time prediction model; applying a physical anchoring adversarial migration strategy to adapt the trained emergence type prediction model to the target new region to obtain a region adaptive prediction model; and inputting the future scene conditions into the regional adaptation prediction model for simulation, and generating a groundwater reserve prediction result. According to the method, intelligent prediction with high precision, high robustness and physical interpretability on groundwater reserves can be realized, and scientific decision support is provided for water resource management.

The invention discloses a gravity dam face crack cause analysis method and device, relates to the field of water conservancy projects, and aims to improve the accuracy and efficiency of dam body crack cause analysis. The method comprises the following steps: establishing a nonlinear finite element model of a gravity dam body, and confirming a load applied by simulation; analyzing the stress influence of the downstream facade crack part of the dam body under the action of a single load, and analyzing the stress change rule of the downstream facade crack part of the dam body under the combined action of multiple loads; analyzing the influence of excessive highest temperature of concrete at the crack part of the downstream facade of the dam body on stress; analyzing the influence of reinforcing bars of a guide wall and a surface hole overflow surface on the stress of the crack part of the downstream facade of the dam body; and finally, comprehensively analyzing the cause of the dam body downstream facade crack. According to the method, the accuracy, reliability and efficiency of fracture cause analysis are improved.

The present invention provides a single crystal furnace thermal field insulation effect detection system based on thermal image analysis. Compared with the prior art, the present invention also includes a first thermal imager for monitoring the thermal distribution of the furnace side wall and generating thermal images, a second thermal imager for monitoring the thermal distribution of the furnace bottom and generating thermal images, a third thermal imager for monitoring the thermal distribution of the furnace top and generating thermal images, a cooling module for at least high temperature protection of the second thermal imager, a processing module for processing the image of the thermal distribution monitoring and imaging of the thermal imager, an evaluation module for evaluating the thermal field insulation effect of the single crystal furnace based on the image processed by the processing module, and an alarm module for triggering an alarm when the evaluation module determines that the thermal insulation effect of the single crystal furnace is lower than the expected thermal insulation effect. The present invention adopts multi-parameter comprehensive analysis and dynamic adaptive adjustment to greatly improve the accuracy, flexibility and industrial application value of monitoring the thermal field insulation performance of the single crystal furnace.

The application provides a multi-joint coordinated control method of a self-reconfigurable star car, and relates to the technical field of star cars, and the method comprises the following steps: acquiring vehicle body state data, including the rotation angle of a driving rocker arm, the wheel base reduction caused by the rotation of the driving rocker arm, the angular velocity of the driving rocker arm and the rolling angular velocity of the wheel; establishing a multi-joint motion constraint model according to the vehicle body state data, including a vehicle body centroid position constraint model, a multi-joint action coordination constraint model and a vehicle body differential steering motion stability constraint model; and performing multi-joint motion control on the self-reconfigurable star car according to the multi-joint motion constraint model. By establishing the multi-joint motion constraint model on the three levels of the vehicle body centroid position, the multi-joint action coordination and the vehicle body differential steering motion stability, the motion coordinated control of the multi-joints in the vehicle body during the reconfiguration process is realized, so that the mechanical mode conversion function and the multi-motion mode switching function of the self-reconfigurable wheeled mobile star car are realized.

This invention provides a lithium carbonate price prediction method based on multimodal data collaborative driving, comprising the following steps: multimodal data source identification and data acquisition; multimodal data classification and standardization; personalized noise filtering and outlier correction of multimodal data; extraction of trend and correlation features from structured data; extraction of semantic and visual / speech features from unstructured data; extraction of key information and feature quantification from semi-structured data; weighted collaborative fusion and feature optimization of multimodal features; construction and training of a two-branch collaborative prediction model; model prediction and preliminary verification of prediction results; optimization and dynamic correction of prediction results; interpretability analysis and visualization of prediction results; and method effectiveness verification and continuous improvement. This method, based on multimodal data collaborative driving, addresses the pain points of existing lithium carbonate price prediction technologies, forming a comprehensive, high-precision, and highly practical prediction solution.

The application relates to the technical field of capacitance monitoring, and relates to an online monitoring system for a speed-regulating capacitor. The system comprises a capacitor parameter acquisition and cleaning module, a multi-dimensional space-time feature fusion module, an element correlation analysis module, a health evaluation module and a monitoring and early warning information mapping module. The rated parameter configuration and the operation state parameter of the speed-regulating capacitor are acquired and cleaned to obtain initial feature parameters and multi-source operation dynamic data. A multi-dimensional feature operation matrix of the speed-regulating capacitor is constructed. The real-time state information of the speed-regulating capacitor is subjected to element correlation analysis to obtain a key feature vector of the speed-regulating capacitor. The key feature vector is subjected to risk state evaluation to obtain a quantitative health index of the speed-regulating capacitor. The quantitative health index is mapped to historical operation and maintenance records to obtain monitoring and early warning information of the speed-regulating capacitor. The application can improve the efficiency of online monitoring of the speed-regulating capacitor.

A satellite remote sensing image power tower disaster damage identification method, system and related device, the method comprises collecting multi-source power tower satellite remote sensing image and constructing a data set; input the data set into the pre-constructed rotating target detection model, output the power tower spatial position and identify the orientation angle through the rotating target detection model; according to the spatial position of the power tower and the identified orientation angle, the maximum likelihood estimation model of the angle distribution of the power tower is constructed through angle specialization processing, and the maximum likelihood estimation model parameters are solved by using the expectation maximization algorithm to determine the orientation angle distribution of the power tower in the image to be measured; according to the orientation angle distribution of the power tower in the image to be measured, abnormal detection is carried out, and the objects exceeding the threshold range are screened out, that is, the power tower damaged by disaster. The present application can avoid the problem of sample scarcity, significantly reduce the data preparation threshold, realize full automation from data preprocessing to abnormal screening in the detection process, and effectively improve the disaster damage perception efficiency and accuracy.

The application belongs to the technical field of excavator working condition recognition, and discloses an excavator working condition recognition method and system based on whole machine information space-time fusion, which collects multi-dimensional running information of the excavator, takes data standardization and segmentation as pretreatment, inputs the obtained time sequence matrix into a constructed time attention module and a spatial attention module in parallel, respectively inputs the time sequence matrix into a time feature extraction network and a spatial feature extraction network, splices along a variable axis to obtain a space-time fusion feature space matrix, inputs the obtained space-time fusion feature space matrix into a designed working condition information learning module for processing to obtain a final working condition recognition result, and improves working condition classification precision; the application effectively combines space-time correlation of excavator sensing data, pays attention to intra-class and inter-class distance of classification features, enhances model recognition ability for continuous working conditions of the excavator, and improves recognition precision of action modes of the excavator.

A guide pipe device of a chute tube riprap system comprises a guide pipe, the top of the guide pipe is communicated with a stone supply device, the bottom of the guide pipe is provided with a discharge port, a movable bottom plate is hinged to the discharge port, a push rod is fixed to the bottom of the movable bottom plate, and the push rod pushes the movable bottom plate to rotate in the discharge port to adjust the size of the discharge port and the stone throwing direction. The push rod communicates with a remote control unit which communicates with the monitoring module. The movable bottom plate is pushed by the push rod to rotate, so that the size of the discharge port, the stone throwing direction and the falling position and speed of the stone are adjusted, the utilization rate of the discharge port area of the guide pipe device is improved, the throwing and filling range is enlarged, and the frequency of moving the guide pipe device and the workload of later supplementary throwing or leveling are reduced; the remote control unit enables operation to be convenient, and working efficiency is improved; the device is simple in structure, convenient to operate, uniform in throwing and filling, suitable for riprap treatment work of the ocean wind turbine foundation, high in practical application value and good in economic benefit.

With the construction of a national novel power system and continuous deepening reformation of the power market, the operating pressure of thermal power enterprises is larger and larger, so that the fuel purchasing management level is improved, and the fuel purchasing cost control requirement is higher and higher; a more scientific and effective method for analyzing, researching and visually and vividly expressing key elements such as fuel purchase'quantity, quality and price ', 'supply, consumption and storage' and the like is urgently needed to be explored and established, practice is scientifically guided, enterprises are helped to reduce cost and increase benefits, and high-quality development of new kinetic energy is continuously gathered. On the basis, a'quantity, quality and price 'comparative analysis and'supply, consumption and storage' total balance histogram expression method 'for monthly fuel purchase of a thermal power enterprise is created by applying a digital thinking concept through long-term tracking research and repeated thinking and exploration on the basis of a logic association relationship among internal elements of the fuel cost of the enterprise and an internal operation mechanism. According to the method, all fuel purchase key elements are pioneered to be integrated into one graph, the method has high practical application value, and particularly, an authority, comprehensiveness and instantaneity fuel purchase comprehensive index visual expression and intelligent monitoring alarm'one graph 'expression method is provided for managers at all levels of thermal power enterprises.

The invention discloses an anti-loss image processing method for digital media, which is suitable for short video frame processing and comprises the following steps: S1, through multi-algorithm preprocessing, outputting a layered feature cache library and a preprocessing feature map containing a transition area; s2, a differential elastic compression strategy is adopted for the four types of image areas, and two-stage error correction and area fusion softening are matched; s3, repairing details through an attention codec and a multi-residual network, correcting dynamic artifacts and balancing light and shadow; s4, adaptively converting a color space, and scaling the resolution to adapt to different terminals; and S5, outputting the image after verification. The method gives consideration to compression efficiency and image quality, reduces transmission loss, improves the detail reduction degree of a complex scene, guarantees the consistency of cross-device display, and is suitable for a multi-digital media scene.

The invention discloses a method for predicting soil heavy metal content by using spectral data and social environment factor data, which comprises the following steps: S1, acquiring a training sample set, each training sample comprises position information (longitude and latitude, region codes or other attributes capable of reflecting spatial positions) and spectral data and social environment data corresponding to the sample; s2, data fusion: based on the position information or other associable sample attributes, carrying out matching fusion on the spectral data and the social environment data to obtain fusion feature data; social environment factors are fused to supplement key information of pollution sources and migration, and model prediction precision and operation stability are effectively improved. By means of a spectrum dimension reduction and embedding technology, the problem of high-dimensional data colinearity is relieved, and the over-fitting risk of the model is reduced; a cross validation method based on geographic grouping is adopted, so that the model validation process is closer to a cross-regional actual deployment scene; meanwhile, the feature contribution degree is output, and the practical application value in environment supervision work is improved.

The invention relates to the technical field of data processing, in particular to a multi-source heterogeneous data real-time processing method and system. The method comprises the following steps: acquiring multi-source heterogeneous original data, synchronously extracting attribute characteristics of the multi-source heterogeneous original data and collecting process state information; performing standardized cleaning processing on the multi-source heterogeneous original data based on the attribute features to obtain standardized heterogeneous data; embedding a priority guide identifier into high-information-density data in the standardized heterogeneous data, and performing symbiotic binding on the acquisition process state information and the standardized heterogeneous data to form heterogeneous standardized bound data; through full-process automatic processing, multi-source data compatibility, large model analysis and dynamic storage, efficient standard processing of the multi-source heterogeneous data is realized, so that the processing efficiency of the multi-source heterogeneous data is improved, and reliable data support is provided for information analysis and decision making.

The application discloses aerogel based on transition metal oxide nanowire rapid self-assembly gelation and a preparation method thereof. The method comprises the following steps: soaking transition metal oxide nanowires in lye to obtain surface-hydroxylated transition metal oxide nanowires; dissolving the surface-hydroxylated transition metal oxide nanowires into water to prepare a transition metal oxide suspension; inducing the transition metal oxide nanowires to rapidly self-assemble and gelate within several seconds through metal cations; and finally converting the transition metal oxide nanowires into transition metal oxide aerogel through freeze-drying. The transition metal oxide gel prepared by the method is simple and fast, and the preparation process is controllable. The prepared aerogel has a good three-dimensional network porous structure and excellent ammonia adsorption capacity, and the adsorption capacity is significantly better than that of commercial activated carbon, and the aerogel can be applied to the adsorption and purification of ammonia-containing waste gas in industry and animal husbandry.

The application discloses an ultrahigh-vacuum-compatible high-precision nanoradian rotary table and a nanoradian angle output method, and belongs to the technical field of precise adjustment equipment. The rotary table is composed of a rotary seat assembly, a driving assembly, a displacement transmission assembly and an angle output rotary hinge. The driving assembly and the displacement transmission assembly are cores. The nanometer displacement of a piezoelectric actuator is scaled and amplified by a displacement driving hinge, driving force is accurately transmitted through the displacement transmission assembly, and linear displacement is converted into nanoradian rotation through the angle output rotary hinge. The titanium alloy material of the rotary table is suitable for an ultrahigh-vacuum environment, and the piezoelectric actuator is combined to realize overall power-off self-locking. Under a 5kg load, a minimum rotation step of 10nrad and a rotation stroke of 200μrad can be realized, and the problems of poor load, no self-locking, unsuitable vacuum and low rotation precision of existing rotary tables are solved. The structure has high rigidity and stability, and closed-loop control can also be realized.

The application discloses a conductive ring in the technical field of petroleum equipment electronic components and a manufacturing method thereof, and aims to solve the problem that the conductive ring in the prior art is prone to causing poor contact due to the gap in the radial direction after long-term use and abrasion. The conductive ring comprises a ring-shaped skeleton assembly, the skeleton assembly comprises a metal skeleton and a plastic skeleton arranged on the top of the metal skeleton, a wire is connected to the top of the metal skeleton, a receiving gap is formed on the inner side wall of a local skeleton of the plastic skeleton, so that the local skeleton forms a thin wall part, and vulcanized rubber layers are arranged on the two side walls of the skeleton assembly. The application is suitable for the manufacture of the conductive ring, can achieve the effect of keeping close contact all the time, realizes reliable contact, guarantees the stability of signal transmission, has reasonable overall layout, compact structure, and makes the outer side of the conductive ring annular, so that the conductive ring is convenient to install on petroleum equipment.

The present application relates to the field of energy and environmental information technology, and more particularly to a traffic industry carbon emission multi-scale rolling prediction method based on deep learning, comprising: step 1, data preprocessing and sequence decomposition; step 2, rolling sample construction; step 3, CAWOA initialization; step 4, CAWOA iterative optimization, loop judgment process; step 5, component level BiLSTM training and rolling prediction; step 6, rolling judgment and information update; step 7, mode cycle and prediction output; step 8, mode reconstruction and result restoration. The present application can realize dynamic description and accurate prediction of the evolution trend of traffic industry carbon emission, and provide more realistic prediction basis for relevant emission reduction policy making.

The application discloses a kind of enteromorpha green tide salvage ship deployment determination method, belong to enteromorpha green tide prevention and control field.This method includes the following steps: a, construct the biomass estimation model based on enteromorpha green tide satellite remote sensing data and field monitoring data;B, construct biomass-salvage volume conversion model;C, construct the calculation model of salvage efficiency under different sea conditions and different salvage modes;D, based on biomass estimation model, biomass-salvage volume conversion model and the calculation model of salvage efficiency under different sea conditions and different salvage modes, construct salvage ship deployment model;E, according to the delineated sea area range, obtain the enteromorpha green tide satellite remote sensing data of the sea area range, then based on the salvage ship deployment model constructed in step d Determine the number of salvage ship demand, carry out salvage ship deployment.The present application constructs salvage ship deployment model etc., based on the dynamic deployment strategy of fine classification, significantly improves the scientificity and operation efficiency of ship resource scheduling.

The invention provides a pressure vessel gas tiny leakage fault self-adaptive diagnosis method and system, and the method comprises the steps: carrying out the preprocessing of a leakage signal through a self-adaptive signal decomposition algorithm according to a pressure vessel gas tiny leakage acoustic signal collected by an MEMS ultrasonic microphone array, extracting a plurality of leakage features, and inputting the features into a leakage diagnosis model, and the function of identifying micro leakage working conditions of various apertures of the pressure vessel is realized. According to the invention, by extracting the multi-index characteristics of leakage, the micro leakage working conditions of various different apertures are effectively identified, the accuracy of gas micro leakage fault diagnosis of the pressure vessel and the safety monitoring level of an industrial production link are improved, the detection defects caused by parameter selection by artificial experience are overcome, and the detection efficiency is improved. The stability and generalization ability of the small aperture leakage diagnosis model are effectively improved, a basis is provided for subsequent leakage positioning research, and the method has great practical application value.

The present invention discloses a cross-layer collaboratively optimized LoRa-Mesh wireless network communication method, the steps of which are as follows: the edge node transmits edge data back to the aggregation node via the LoRa-Mesh network; the edge node initiates an air device pairing request to the aggregation node; the application layer performs application layer private protocol encapsulation, and the hierarchical dynamic key negotiation protocol based on the PSK mechanism realizes air activation; the network layer uses the AODV routing protocol optimized for asymmetric channels to build a mesh routing path; the MAC layer performs data collision judgment and backoff control; the RDC layer performs channel monitoring based on the asynchronous communication low duty cycle monitoring mechanism; the physical layer calls the LoRa communication driver to send and receive data; the edge node performs data parsing according to the node data type. The present invention improves the stability, efficiency and security of communication in the LoRa-Mesh network, and meets the communication needs in the randomly distributed node scenario.

The application discloses a liver cancer prognosis evaluation model generation method and related devices, and relates to the technical field of data processing. The method obtains medical multi-modal data of a liver cancer patient, the medical multi-modal data including macroscopic magnetic resonance imaging data and microscopic pathological whole slice image data; based on a graph neural network, the medical multi-modal data is converted into multi-scale graph structure data and is subjected to cross-scale topological alignment through a GroMoVe optimal transport algorithm to obtain topological fusion features; the topological fusion features are input into a causal intervention module constructed based on a structural causal model, a counterfactual generation is performed to eliminate confounding factors, and causal invariant features are extracted; a continuous time evolution component is trained based on the causal invariant features, the continuous time evolution component represents time dynamic changes of a tumor recurrence risk based on a neural ordinary differential equation, and a liver cancer prognosis evaluation model is obtained. The application improves liver cancer recurrence prediction accuracy, enhances model generalization robustness and interpretability.

The invention belongs to the technical field of detection devices, and relates to a rotor wing anti-icing and de-icing equipment test platform. Comprising a power supply conversion module, a program control DC power supply, a PLC module, an RS422 conversion module, a DC current transmitter, an industrial personal computer, a signal processing module, a D / A module and an electronic load. The method is clear in function layout, clear and reasonable in connection relation, capable of achieving convenient measurement, high in testing efficiency and high in practical application value.

The utility model relates to the technical field of stop valves, in particular to a dual-seal stop valve which is characterized in that a screw is fixedly connected to the upper inner wall of a rotary cover, a threaded sleeve is in threaded connection with the outer surface of the screw, a lifting seat is fixedly connected to the lower surface of the threaded sleeve, and a telescopic air cylinder is rotationally connected to the lower surface of the screw; a handle is fixedly connected to the outer surface of the rotating cover, a spring is fixedly connected to the upper inner wall of the handle, an adjusting handle is fixedly connected to the end, away from the handle, of the spring, and a limiting frame is fixedly connected to the left end of the adjusting handle. According to the stop valve, the safety risk caused by abnormal conditions such as faults of the driving part is reduced, the use scene of the stop valve is expanded, the actual application value of the stop valve is enhanced, the position of the handle can be limited in the static state, closing or opening of the stop valve caused by mistaken touch of the handle is avoided, and the safety effect of the stop valve is improved.

The application discloses a generative document reordering method based on retrieval enhancement generation, which comprises the following steps: firstly, preprocessing an original document set to obtain a candidate document set; then, inputting a query question and the candidate document set into a large language model to generate answers and thought chains, disassembling the thought chains into atomic reasoning steps, and then performing sample screening; calculating the information gain score and the semantic similarity score of each atomic reasoning step for each candidate document, taking the maximum value as the final contribution score of the document after weighted fusion, and sorting the candidate documents according to the score to form a training data set; training a generative reordering model to make it output an ordered sequence of document identifiers; and applying the pre-trained generative reordering model in the online inference stage. The method changes the sorting target to the actual contribution of the document to the reasoning step, combines a high-quality supervision signal, constructs a sliding window global rearrangement strategy, and improves the retrieval accuracy of key documents and the practicability of the reordering model in a complex question and answer scene.