48results about How to "Reduce mismatch" patented technology

The invention provides a multi-type storage cluster dynamic nano-management method based on a cloud platform, and belongs to the technical field of cloud platform storage resource management, a storage pool is used as a minimum management unit, a configuration center provides a unified nano-management entrance and is associated with a platform initialization process, and initialization of standardized parameters such as a storage cluster IP, an account and the like is automatically completed; after management, block storage, file storage or object storage types and exclusive parameters thereof are configured for the storage pool according to business requirements, and available storage pools are screened according to binding relations when storage services are created, so that resource mismatching is avoided. Bidirectional synchronization is carried out between the operation and maintenance resource management module and the storage module through a full life cycle by using an equipment SN number, so that state consistency and traceability are realized; expansion of newly added storage pools, unbinding of the storage pools and resource recovery are supported, and the resource utilization rate and the operation and maintenance efficiency are improved.

The present application relates to the technical field of array signal processing and wireless communication, and particularly relates to a beacon source assisted self-calibration and robust beamforming method, comprising: collecting array snapshot data and constructing sample covariance; extracting spatial features based on coarse direction prior of auxiliary signal source and performing reliability determination; estimating geometric drift parameters through per-element phase ratio estimation; constructing parameterized covariance model based on calibrated array manifold and estimating noise power; estimating power coefficients of each signal source by using non-negative constraint fitting estimation; reconstructing INCM and optionally diagonally loading to enhance reversibility; calculating MVDR weight vector based on reconstructed INCM and outputting beamforming result; when reliability determination fails, falling back to nominal geometry or preset geometry to avoid false calibration. The present application has the advantages of geometric self-calibration, low snapshot robustness, false calibration prevention and wide application range.

This invention provides a light-emitting diode epitaxial wafer and its fabrication method. The light-emitting diode epitaxial wafer includes a substrate, and a buffer layer, an undoped GaN layer, an N-type GaN layer, a multiple quantum well layer, an electron blocking layer, and a P-type GaN layer sequentially deposited on the substrate. The buffer layer includes a nitrided graphene buffer layer, an h-BN buffer layer, and a B-type GaN layer sequentially deposited on the substrate. x Al 1‑x N buffer layer, AlN buffer layer, wherein, the B x Al 1‑x The boron content in the N-buffer layer gradually decreases along the growth direction of the epitaxial layer. This invention achieves this by sequentially arranging a graphene nitride buffer layer, an h-BN buffer layer, and a boron buffer layer between the substrate and the epitaxial structure. x Al 1‑x N-buffer layers and AlN-buffer layers reduce lattice mismatch between structures, lower defect density, and improve the overall quality of LED epitaxial wafers.

There is provided a mask data preparation method including: generating exposure-level pattern data including a first layout and a second layout positioned across a boundary line between a first exposure data region and a second exposure data region adjacent to the first exposure data region; generating a first correction layout and a first plurality of auxiliary patterns associated with the first layout based on the exposure level pattern data; generating a second correction layout and a second plurality of auxiliary patterns associated with the second layout based on the exposure level pattern data; generating corrected exposure level pattern data based on the first correction layout, the first plurality of auxiliary patterns, the second correction layout, and the second plurality of auxiliary patterns; extracting first mask data based on the corrected exposure level pattern data; and extracting second mask data based on the corrected exposure level pattern data.

The application discloses a kind of time difference risk hedging method and device of insurance fund custody, it is related to financial risk control technical field, the method includes: creating virtual sub-account for each user and being bound with corresponding policy account one by one to realize fund physical isolation;When consumption incentive enters the custody special account, it is frozen to corresponding virtual sub-account by calling bank freezing interface and generates directional payment instruction;When daily business ends, generate custody fund flow sheet snapshot, before batch deduction of insurance company next day, pre-reconciliation is carried out to custody fund flow sheet snapshot and to-be-deducted list, and according to result, unfreezing transfer or difference processing is executed;Risk reserve pool is established simultaneously, when unilateral account is abnormal, first pay, complete account adjustment to realize error recovery after finding out reason and clearing up.The application realizes fund physical isolation by virtual sub-account binding and fund freezing directional transfer, effectively hedges the supervision and operation risk caused by fund circulation time difference, and improves the stability of fund custody.

The application discloses a random rotation DEM structure for reducing switch activity, comprising a digital-to-analog converter, a digital input of the digital-to-analog converter is divided into an input code and a random rotation number, the random rotation number is input into a switch activity reduction structure through a barrel shifter output result delayed by a D flip-flop for one period, a feedback output of the switch activity reduction structure is fed back to the barrel shifter as an input, and an output of the barrel shifter after rotation controls corresponding switches and is connected to a corresponding cell array. The application uses input data to replace a pseudo-random number generator, and uses relatively simple logic to realize a switch activity reduction function, so that the complexity is reduced.

The application belongs to the technical field of point cloud processing, and discloses a multi-modal semantic mapping method and system based on a master-slave architecture. The method comprises the following steps: S1, extracting feature points in point cloud data and calculating the covariance matrix of the neighborhood point cloud of each feature point; S2, solving the optimal pose corresponding to the minimum of the target function; S3, converting the obtained point cloud data into a world coordinate system using the optimal pose, fusing all frame point cloud data in the world coordinate system to form a three-dimensional point cloud map, projecting the three-dimensional point cloud map to a camera coordinate system, and inputting the three-dimensional point cloud map projected to the camera coordinate system into a semantic segmentation neural network to obtain the semantic label corresponding to each point cloud in the three-dimensional point cloud map, thereby achieving semantic mapping. Through the application, the problems of weak dynamic adaptability, insufficient model generalization ability and long-term running precision decay of the traditional three-dimensional semantic mapping method in a dynamic complex scene are solved.

The application discloses a kind of real-time ranging modeling system using double camera, it is related to visual ranging technical field, including: calibration acquisition module, calibration first camera focal length and two camera baseline length, acquisition first camera image and second camera image, generate processing area, establish image cache queue;Static correction module extracts static anchor point in processing area, constructs triangular mesh element, with first camera image as reference, according to triangular mesh element to the position correction of second camera image, form second camera image after position correction;Contour ranging module extracts target contour position based on first camera image, forms target contour circumscribed rectangle, matches the same sequence contour position in second camera image after position correction, generates contour parallax, and according to contour parallax conversion target distance value, forms target contour proximal depth boundary, target contour mid-depth boundary and target contour distal depth boundary.

This invention discloses a method for registering industrial printed images based on a lightweight network. The method includes: S1 Image acquisition and dataset construction, which uses a CCD industrial camera to acquire images of the front and back of printed materials and constructs a training dataset by combining multispectral images; S2 Constructing a DHSiam network, which includes two parallel feature extraction networks; S3 Proposing an attention heterogeneous mechanism, which includes a position regression unit and a lightweight unit to enhance data representation and reduce model parameters; S4 Constructing a cross-entropy loss function with additional margin to enhance network performance metrics. This invention builds a hardware platform with 8 parallel GPUs, uses only AMC-Loss to distinguish image similarity, utilizes the attention heterogeneous mechanism to extract important information from feature maps at different scales, and adjusts model parameters to enhance the algorithm's performance on mobile devices, thereby comprehensively improving the model's ability to register printed images with different perspectives and deformations.

This invention discloses a high-elongation cast Al-Cu-Zn-Mg alloy with good resistance to hot cracking. The alloy composition, by mass percentage, includes: Cu 3.5–4.5%, Mg 0.4–1.5%, Mn 0.2–0.5%, Ti 0.10–0.2%, Zn 2.5–3.5%, with the balance being Al and unavoidable impurity elements. Addressing the limitations of existing Al-Cu casting alloys, such as wide solidification temperature range, poor fluidity, and hot cracking, this invention provides a high-Zn-content Al-Cu-Zn-Mg alloy with good resistance to hot cracking. This alloy has a low melting point, a narrowed solidification temperature range, and excellent resistance to hot cracking and mechanical properties. It can be used for various high-strength cast aluminum alloy structural parts, effectively avoiding casting defects such as hot cracking, shrinkage cavities, and porosity, and significantly improving the overall mechanical properties of the alloy.

The present application relates to the technical field of image reconstruction, in particular to a kind of imaging method of 3D space position information and 2D color texture information fusion, comprising the following steps: according to 2D color texture information, extract 2D color texture information internal gray level co-occurrence matrix pixel parameter, generate two-dimensional color mutation boundary, obtain 3D space position information accompanying space isomorphism determination item.In the present application, three-dimensional feature distribution skeleton coordinate set is used to participate in the solution of curved surface control point, so that the spatial curved surface reconstruction has continuity and geometric consistency;Finally, by converting two-dimensional color mutation boundary coordinates into Lagrange multiplier constraint variable and embedding into the solving process, the boundary constraint directly participates in the three-dimensional curved surface generation process, and then the texture pixel value is mapped to the external connection surface of three-dimensional curved surface grid node set, to realize the synchronous expression of space structure and texture information.

This invention discloses a method and system for identifying and warning of hazardous sources in mines, relating to the field of mine safety monitoring technology. The method includes: constructing a wireless network inspection system based on the mine inspection area, target facility coordinates, airport deployment location, and wireless communication coverage; controlling a drone to collect inspection control data of the target facilities; performing association and encapsulation on the inspection control data to generate a network inspection data packet; performing consistency verification and validity screening on the network inspection data packet according to a data verification mechanism; sending the screened network inspection data packet into a hazardous source identification model and performing joint judgment based on temperature judgment rules; performing location verification on the joint judgment result to generate a hazardous source control judgment result. This invention, by constructing a wireless network inspection system, achieves collaborative identification and accurate location of hazardous sources in mines, thereby improving the reliability of judgment and reducing data mismatch and false alarms / missed alarms.

The application provides a kind of offshore ship multi-target tracking method and system based on adaptive Kalman filtering, and the method comprises: collecting offshore video sequence, and the video frame is preprocessed, and ship target detection is carried out on the video frame;State prediction is carried out on the existing track, and the prior track state for subsequent data association is obtained;According to the position and size of the target bounding box detected in the current video frame, the posture distance coupling compensation is carried out on the position and size of the target bounding box, and the compensated target bounding box is obtained;Based on the prior track state and the compensated target bounding box, the hierarchical data association matching between the current video frame detection result and the existing track is completed.The application constructs the overall processing procedure with clear front and back constraint relationship for the continuous action process that observation offset, prediction drift, association instability and subsequent identity management are easily affected in offshore monocular ship multi-target tracking.

This invention discloses a BIM digital twin simulation method and system for bridge segment assembly, specifically relating to the field of digital simulation of bridge construction. It includes generating an assembly chain based on data from assembled segments, the current segment, segments to be assembled, joints, prestressed ducts, and closure ends in the bridge BIM model, according to the segment assembly sequence. The assembly chain is used to calculate the joint allowance, duct allowance, elevation allowance, and closure allowance for each segment to be assembled. This invention converts the end face, duct, support, and joint data of the current segment, generated through edge data transmission, into the closure allowance of the subsequent segment chain. Based on the first closure breakpoint, it reverse-calculates the current segment's positioning adjustment amount. This addresses the problem that while the current segment data shows it can be positioned, subsequent segments may exhibit insufficient duct penetration allowance, limited joint thickness distribution, or difficulty in converging the closure end's posture.

The application discloses a method for controlling sound collection in a vehicle and related equipment, and relates to the technical field of vehicle control. The method comprises the following steps: acquiring a seat sensing signal and in-vehicle image information of a target vehicle; identifying a target person in a singing state in the target vehicle based on the seat sensing signal and the in-vehicle image information to obtain a singing distribution state; if the target seat area where the target person is located contains only front seats or only rear seats, determining a target sound collection mode as a one-side singing mode; if the target seat area contains both front seats and rear seats, determining the target sound collection mode as a full-vehicle chorus mode; and adjusting sound collection parameters of multiple sound collection units in a vehicle-mounted sound collection module of the target vehicle based on the target sound collection mode. The application can realize accurate matching and adaptive adjustment of a sound collection area in a singing scene without a microphone in a vehicle, and improve sound collection accuracy and sound collection effect.

The utility model provides a centrifugal tube of intelligent identification relates to the field of life science and biotechnology, including pipe body, pipe cover, electronic chip label, the pipe body and pipe cover are connected together, the electronic chip label is inlayed in the pipe cover, the inside of pipe cover is provided with the space, the electronic chip label is embedded in the pipe cover through the space, the electronic chip label is rectangle, square, round or oval, the pipe body and pipe cover are integrally formed design, the electronic chip label and pipe body, pipe cover are integrally formed design, the volume of pipe body is 0.2ml 15ml, the utility model discloses through the electronic chip label to the sampling tube information is identified, avoided the error caused by artificial check, or in need double person check operation can increase once instrument check, reduces the information mistake caused by artificial check, in addition, through the electronic chip label storage patient identity information and sample information still make data have traceability.

The application discloses a titanium carbide and element powder modification method for 5-series aluminum alloy and an aluminum alloy composite material, and aims to solve the technical problems that in the existing additive manufacturing, due to the high content of Mg element in the 5-series aluminum alloy, the additive manufacturing is difficult, and the aluminum alloy composite material obtained by additive manufacturing has crack defects and poor densification effect due to thermal cracks and evaporation of strengthening elements. The modification method comprises the following steps: obtaining 5-series aluminum alloy powder; adding titanium carbide particles and element powder to the 5-series aluminum alloy powder for mixing to obtain mixed powder; after heat preservation treatment of the mixed powder, the composite powder with small particle size is collected through screening; and the composite powder is formed by additive manufacturing, so that the modification of the 5-series aluminum alloy is completed, and the aluminum alloy composite material is obtained. The technical scheme of the application is used for providing a titanium carbide and element powder modification method for 5-series aluminum alloy and an aluminum alloy composite material.

The application discloses a coating material for optical fiber and a preparation method thereof, an optical fiber insulator and a preparation method thereof. The preparation raw material of the coating material comprises the following components in parts by weight: tetrahydrofuran acrylate 40-60 parts by weight, carboxyl modified polyurethane acrylate oligomer 30-50 parts by weight, silicone modified epoxy acrylate bifunctional linker 5-15 parts by weight, vinyl silane surface modified SiO2 nanoparticles 2-5 parts by weight, triaryl sulfonium hexafluoroantimonate cationic initiator 0.1-1 part by weight, and TPO free radical photoinitiator 0.5-4 parts by weight. According to the embodiment of the application, the silicone modified epoxy acrylate bifunctional linker in the coating layer realizes active chemical bonding between the optical fiber coating layer and the alicyclic epoxy resin sheath, reduces the physical gap and thermal stress mismatch of the multi-material interface, and thus can fundamentally improve the interface strength, internal insulation performance and long-term reliability of the optical fiber insulator.

The invention discloses a bipolar functional current collector, a preparation method thereof, a pole piece and a battery. The bipolar functional current collector comprises a negative current collecting layer, a positive current collecting layer and a transition layer between the negative current collecting layer and the positive current collecting layer, the lattice constant of the transition layer is between the lattice constant of the negative current collecting layer and the lattice constant of the positive current collecting layer; and the lattice constants of the transition layers in the direction from the positive electrode current collecting layer to the negative electrode current collecting layer are gradually reduced in a gradient manner. The transition layer adopts a multi-layer design, and the lattice constant of the transition layer is gradually reduced in a gradient manner from the positive current collecting layer to the negative current collecting layer to form a continuous solid solution, so that the interface lattice mismatch is effectively reduced, the bonding strength is enhanced, and the internal resistance is reduced, thereby improving the quick charging performance of the battery; local stress generated by lithium ion intercalation / deintercalation can be dispersed, cracks and holes are prevented from being formed, the problem of lattice mismatch caused by direct contact of aluminum and copper in a traditional bipolar current collector is solved, fault falling caused by stress concentration in the charging and discharging process is avoided, the service life of the battery is prolonged, and the safety of the battery is improved.

The invention relates to the technical field of batteries, in particular to a rare earth gradient modified high-nickel ternary positive electrode material and a preparation method and application thereof. A preparation method of a rare earth gradient modified high-nickel ternary positive electrode material comprises the following steps: bulk phase light rare earth doping: mixing a lithium source, a high-nickel ternary precursor and a light rare earth source, and carrying out first sintering treatment to obtain a bulk phase doped material; carrying out near-surface co-doping, mixing the bulk phase doping material with a medium rare earth source and a doping agent, and then carrying out secondary sintering treatment to obtain the rare earth gradient modified high-nickel ternary positive electrode material, the dopant comprises at least one of a zirconium source and a phosphorus source. According to the invention, a gradient functional structure combining bulk phase light rare earth doping and near-surface medium rare earth-electrolyte affinity element co-doping is adopted, so that the defect of poor cycle performance of the existing high-nickel ternary positive electrode material in a lithium ion battery due to bulk phase structure degradation and interface impedance sharp increase is effectively overcome.

The application relates to the technical field of alloy materials, in particular to a 4341E high-speed steel and a preparation method thereof. The high-speed steel is characterized in that Ti, B and N elements are introduced for ternary micro-alloying and synergistic modification on the basis of a W-Mo-V-Co component system, nanoscale particles generated in-situ by Ti-N are used as heterogeneous cores to significantly refine grains, the grain boundary is strengthened by the grain boundary segregation effect of boron elements, and the reticular carbide is effectively broken. The obtained steel material realizes perfect matching of high hardness, excellent red hardness and excellent impact toughness, solves the problem that the strength and toughness of traditional high-speed steel are difficult to be compatible, and is particularly suitable for manufacturing high-performance cutting tools, cold and hot precision dies and high-temperature wear-resistant parts.

The application belongs to the technical field of semiconductor material preparation, and relates to a multi-element oxide film and a preparation method and application thereof. In view of the technical problem that the multi-element oxide film is difficult to be prepared uniformly in a large area in the prior art, the application provides a preparation method of the multi-element oxide film, which is prepared by molecular beam epitaxy co-evaporation and comprises the following steps: placing a substrate in a molecular beam epitaxy co-evaporation preparation cavity, and vacuumizing the cavity; sequentially depositing a YSZ buffer layer and a CeO2 buffer layer from bottom to top in the cavity, and obtaining a substrate containing the buffer layers by controlling electron beam automatic evaporation through a film thickness gauge; depositing a YBCO film on the substrate containing the buffer layers by co-evaporating yttrium, copper and barium fluoride, and obtaining a multi-element oxide film with good large-area uniformity by co-evaporating the Y evaporation source, the Cu evaporation source and the Ba evaporation source through the film thickness gauge. The application further provides the multi-element oxide film and application thereof.

The application provides an LED epitaxial structure and a preparation method thereof. The LED epitaxial structure comprises a strain buffer layer, a cutoff layer, a first type semiconductor layer, an active layer and a second type semiconductor layer which are sequentially stacked on a substrate. The strain buffer layer comprises a low-temperature buffer layer, a high-temperature isolation layer, a first superlattice buffer layer and a second superlattice buffer layer which are sequentially stacked. The low-temperature buffer layer is located between the substrate and the high-temperature isolation layer. The second superlattice buffer layer is located between the first superlattice buffer layer and the cutoff layer. The setting of the strain buffer layer can improve the crystal quality of the LED epitaxial structure, and thus the brightness of the light-emitting diode can be improved.

The application provides a preparation method of a single crystal thin film with low defects, and at least comprises the following steps: step S1, providing a substrate and placing the substrate in a reaction cavity; the pressure in the reaction cavity is less than 20 tor, and the process temperature of the substrate is lower than 900 DEG C; step S2, introducing a first deposition gas into the reaction cavity to form an N-type single crystal thin film on the surface of the substrate; the first deposition gas comprises a raw material gas and an N-type doping gas; step S3, switching to introduce a second deposition gas into the reaction cavity to form a P-type single crystal thin film on the surface of the N-type single crystal thin film; the second deposition gas comprises a raw material gas and a P-type doping gas; and the raw material gas is a silicon source precursor or a germanium source precursor. The preparation method can reduce the defects of the single crystal thin film and improve the film quality.

The application provides a feature matching method and system based on multi-source heterogeneous data of intelligent terminals, and relates to the technical field of wireless communication. The method comprises the following steps: a target terminal acquires wireless network measurement records and motion state records, and respectively associates time markers; an environment fingerprint formed by at least two types of statistical quantities is generated based on the wireless network measurement records, which is used to indicate the wireless scene characteristics of the observation position; within a continuous time window, a continuity parameter is generated based on the motion state records to represent the motion continuity between records; data objects carrying time markers and associated with the environment fingerprint and the continuity parameter are combined in pairs to form candidate object pairs, and the candidate object pairs come from different modalities or different terminals; based on the environment fingerprint and the continuity parameter, a matching determination is made according to the time markers, and a target matching pair satisfying a predetermined determination rule is output; and the application can improve the accuracy and stability of cross-source data matching in a dynamic indoor scene.

This utility model discloses a dedicated lead wire for an electronically controlled valve of a variable displacement compressor in an automobile, comprising: a connector 1, on which wire harness 1 and wire harness 2 are mounted; a connector 2, connected to the end of wire harness 1, and a connector 3, connected to wire harness 3, with a terminal at the end of wire harness 3 furthest from connector 3; and a connector 4, connected to the end of wire harness 2, and connected to connector 5 via wire harness 4. This utility model has a simple structure. Through the coordinated operation of wire harness 1, wire harness 2, connector 2, wire harness 3, connector 4, wire harness 4, and connector 5, the applicability of the wire harness is greatly improved, meeting the needs of different electronically controlled valves and vehicles, and reducing problems caused by wire harness incompatibility. Furthermore, it is easy to assemble and disassemble, saving significant time and labor costs both during automobile production and assembly and in later maintenance.

The application provides an event camera / IMU / natural landmark-based odometer system and method, wherein the system comprises an event camera tracking module, a traditional camera tracking module and a joint optimization module. The application utilizes the complementary advantages of the event camera and the traditional camera, adopts a scheme combining the two with an IMU to construct a visual odometer, improves the robustness of the system in a high-speed high-dynamic scene, and calculates and updates the current pose through a scheme of presetting natural landmarks with known position information in the scene, so as to realize a function similar to loop detection. In the traditional camera tracking module, a step of dynamic point elimination is further added, so as to further improve the robustness of the system in a dynamic scene.

The application discloses a SAM2 small sample segmentation method based on semantic-visual double memory fusion, constructs semantic query memory, visual query memory and query related support visual memory, fuses the semantic query memory and the visual query memory through a memory refinement module guided by the query related support visual memory, and combines SAM2 dense matching and decoding module end-to-end training. The method solves the single memory and foreground-background confusion problems of the existing method, enhances target semantic consistency and fine-grained modeling capability, significantly improves segmentation precision and generalization capability in a complex scene, and is suitable for medical image analysis, automatic driving and the like.

The invention relates to a method for determining the yaw angle (YA) of a trailer (2) relative to the longitudinal axis (LAV) of a towing vehicle (1) by setting a perpendicular bisector (B1) on the basis of features included in a plurality of captured images.