8 results about "Cross layer" patented technology

The application discloses a kind of anonymous routing methods of double-layer satellite network for delay-sensitive service, it is applied to VLEO / LEO double-layer satellite network, this network is based on software-defined network SDN architecture implementation, including data plane, control plane and application plane;Data plane includes VLEO layer, VLEO / LEO cross layer and LEO layer;Application plane is deployed with the routing method of the application upper;The method comprises: constructing layered decoupling routing calculation framework, to divide routing decision into including LEO layer inner routing, VLEO / LEO cross layer routing and VLEO layer inner routing multilayer path selection;Using the collaborative computing capability of SDN controller and satellite node, multilayer path selection is reconfigured and weight disturbance in real time, generates optimal routing path.The application can effectively reduce end-to-end delay, balance network load, improve the real-time performance, robustness and security anonymity of double-layer satellite network.

The application discloses a kind of unmanned material transport systems and methods, including intelligent equipment cluster and remote centralized dispatch system, and intelligent equipment cluster is connected with remote centralized dispatch system;Intelligent equipment cluster includes horizontal transport intelligent equipment for the same layer transport of material, intelligent construction elevator for the cross layer transport of material, and stacking robot for the sorting of material;Remote centralized control system includes front-end interface for issuing tasks, supervising material process and equipment state and back-end server for task scheduling, task path planning, task conflict monitoring and management, and the information collected is transmitted to front-end interface for display, and front-end interface is connected with back-end server;Intelligent equipment cluster and back-end server are communicated bidirectionally through real-time communication module.The application can automatically complete material sorting and transportation, can reduce construction site manual operation, improve equipment efficiency, and reduce transportation cost.

The invention relates to a small target detection method and system based on adaptive texture perception and frequency domain-cross-layer collaborative optimization, and the method comprises the steps: providing a cross-scale texture guide module, independently capturing the spatial distribution characteristics of heterogeneous features through a multi-scale texture extraction unit, and constructing scene-level texture prior through an additive fusion mechanism; a frequency domain detail enhancement module is provided, features are mapped to a complex frequency spectrum space through real number fast Fourier transform, dynamic reweighting is carried out on medium-high frequency components by using an adaptive weight vector, and target contour information is explicitly enhanced in combination with inverse transform and a residual connection mechanism; a cross-layer feature stabilization module is designed, context clues of different granularities are captured through lightweight multi-scale receptive field extension, and a dynamic channel gating modulation mechanism is introduced to perform active intervention on a feature evolution path. Compared with the prior art, the method has the advantages of characteristic enhancement, stable positioning, balanced detection precision and operation efficiency and the like.

The utility model belongs to the technical field of heat exchangers, and provides a cross laminated heat exchanger, which comprises a heat exchanger core body, the heat exchanger core body comprises a first heat exchange component and a second heat exchange component, the first heat exchange component comprises a plurality of groups of first heat exchange assemblies arranged in an array, and the second heat exchange assembly comprises a plurality of groups of second heat exchange assemblies arranged in an array. The second heat exchange component comprises a plurality of second heat exchange assemblies arranged in an array mode. The heat exchanger core is formed by intersecting and stacking the multiple first heat exchange assemblies and the multiple second heat exchange assemblies, the composition structure is simple, the production difficulty and the production cost are reduced, the specification of the heat exchanger can be adjusted by increasing or decreasing the same number of the first heat exchange assemblies and the second heat exchange assemblies, and the production efficiency is improved. And meanwhile, the multiple sets of first heat exchange assemblies are communicated to form the first flow channel, the multiple sets of second heat exchange assemblies are communicated to form the second flow channel, the first flow channel and the second flow channel are independently formed, and the oil-water isolation sealing effect is good.

A kind of high-density server PCB board manufacturing method, comprising the following steps;Step S1, providing n layer circuit board;Step S2, n layer circuit board is formed respectively electric signal layer and ground layer;Step S3, through drilling, copper sinking, electroplating, ground hole and signal via hole that are formed in L1, L2, L3 ……Ln are passed through n layer circuit board;Step S4, between L1 and L2, Ln-1 and Ln layer by laser, electroplating makes L1 and L2, Ln-1 and Ln layer form blind hole;Step S5, between L1 to L3, Ln-2 to Ln layer by laser, electroplating is formed across L2 and Ln-1 cross layer blind hole, and cross layer blind hole is conducted between L1 and L3, Ln-2 and Ln layer.

A method of dynamically routing packets to a destination node performed by a computing device is disclosed. The method includes: (1) detecting a status of a plurality of links to the destination node across a plurality of communications modalities; (2) determining a set of links to use for routing packets to the destination node based on the detected statuses; and (3) sending packets to the destination node via the determined set of links. A related computer program product, apparatus, and system are also disclosed.

The invention discloses a string connection type hollow-core optical fiber and an optical transmission system, and belongs to the technical field of optical fibers. The optical fiber comprises: a hollow core region (101); an outer cladding (301); the multiple negative curvature medium units (201) are distributed around the hollow core area and located on the inner side of the outer cladding layer; a cell wall (601); a cell space (701) commonly defined by the negative curvature medium cells and the cell walls; the entity crossing layers (401) are arranged in the unit spaces and stretch across the unit spaces, and the two ends of the entity crossing layers are connected to the unit walls. Different from a traditional nested structure, the cross-over layer is adopted to replace a nested pipe, the two ends of the cross-over layer are fixedly connected to the unit walls to form bidirectional support, and the machining yield and the structural stability are remarkably improved; the number of air chambers is reduced and the manufacturing process is simplified; the cross-layer configuration of more layers can be realized, the limitation of the number of layers of a traditional nested structure is broken through, the transmission loss is effectively reduced, and the working bandwidth is expanded.

The invention discloses a frequency domain selection cross-layer fusion target detection method based on DCT (Discrete Cosine Transform). In order to solve the problem that in an existing YOLO series target detection network, in the multi-time down-sampling process, target detail information is prone to being lost, a frequency domain selection cross-layer fusion module DCTFSCLF based on discrete cosine transform (DCT) is introduced into the YOLO series network, and a frequency domain selection cross-layer fusion module DCTFSCLF based on the DCT is introduced into the YOLO series network. The module performs multi-scale DCT on an input image, extracts medium-high frequency features according to a preset frequency selection mode, and fuses the medium-high frequency features with spatial domain features of different scales in a neck network in a cross-layer mode, thereby enhancing the expression ability of target details and edge information. According to the method, mainstream detection networks such as YOLOv5, YOLOv8 and YOLO11 can be flexibly embedded, the detection precision and the recall rate are effectively improved while the real-time performance is ensured, and the method has good universality and engineering application value.