18results about How to "Simplify the link" patented technology

The invention relates to a joint trajectory and deep learning task optimization method for multiple unmanned aerial vehicles, and belongs to the field of communication, and the method comprises the steps: initializing the configuration information of a ground terminal and unmanned aerial vehicles, setting an iteration frequency variable, and initializing the trajectory of the unmanned aerial vehicles; obtaining an initial target function value, and optimizing the link between the unmanned aerial vehicle and the ground terminal, the trajectory of the unmanned aerial vehicle and the calculation resource allocation of the unmanned aerial vehicle; and judging whether the target function value obtained during the ith iteration reaches a preset target value, if so, obtaining the optimal link between the unmanned aerial vehicle and the ground terminal, the optimal computing resource allocation of the unmanned aerial vehicle, the optimal track of the unmanned aerial vehicle and the minimum energy consumption value of the unmanned aerial vehicle, and if not, continuing iteration. The method combines mobile edge calculation, joint optimization of unmanned aerial vehicle tracks and dynamic unloading of deep learning tasks, and makes full use of multi-unmanned aerial vehicle edge calculation resources, so that the wireless communication rate is maximized while the energy consumption of the unmanned aerial vehicle is minimized, and the communication energy efficiency of the unmanned aerial vehicle and the ground terminal is improved.

The invention discloses an efficient water-cooling circulating radiofrequency ablation needle which comprises a radiofrequency ablation needle body, an ablation needle handle, a Y-shaped water tank, an outflow pipe, an external outflow pipe, an inflow pipe, an external inflow pipe, an inner needle cooling liquid inflow pipe, a temperature thermocouple, an inner needle galvanic couple wire, a radiofrequency needle positive electrode connecting wire, a negative electrode patch and the like. According to the invention, more efficient water-cooling circulating cooling of the tip of the radio frequency needle is realized by adopting an efficient convection water-cooling circulating structure design; the needle tip part of the radiofrequency ablation electrode adopts a novel development structure or an ultrasonic development coating, so that the development of the needle tip part of the electrode under ultrasonic guidance can be remarkably improved; a spiral nut double-sealing-ring buckle structure is innovatively designed for the water circulation Luer taper of the radiofrequency ablation needle, and the sealing performance and stability of a water pipe connector are remarkably improved; the radiofrequency ablation electrode needle has an efficient and stable water-cooling circulation system and development positioning.

The high-rise building refuge storey steel structure comprises a first frame column and a second frame column which are oppositely and obliquely arranged, and an upper chord beam, a waist truss and a lower chord beam are sequentially and horizontally arranged between the first frame column and the second frame column from top to bottom; the lower portion of the first frame column and the lower portion of the second frame column are provided with first nodes and connected with a first inclined strut and a second inclined strut through the first nodes, the first inclined strut and the second inclined strut are oppositely and obliquely arranged, and the middle of the upper chord beam is provided with second nodes and connected with the first inclined strut and the second inclined strut through the second nodes. Third joints are further arranged on the side faces of the lower portions of the first frame column and the second frame column. The upper chord beam, the waist truss and the lower chord beam are arranged on the first frame column and the second frame column, meanwhile, the first inclined strut and the second inclined strut are arranged, and the first inclined strut and the second inclined strut are connected with the waist truss, so that the supporting effect is guaranteed; and by arranging the third joints, other frame columns can be connected through the third joints, connection and fixation are facilitated, and overall construction is facilitated.

The invention relates to a semi-finished product for manufacturing an electrical contact element, an electrical contact element and a method for manufacturing an electrical contact element. According to the invention a semi-finished product is provided in order to ensure a secure connection between several workpieces from which the contact element is to be manufactured, wherein the semi-finished product comprises a first workpiece of metal and a second workpiece of metal, wherein the first workpiece has a front side and a rear side arranged opposite the front side and the rear side is arranged closer to the second workpiece, wherein the semi-finished product comprises at least one window which extends at least through the first workpiece and a surface of the second workpiece is accessible from the first workpiece through the window and wherein the window has a base region which increases from the front side of the first workpiece towards the second workpiece.

The invention provides a connector which can reliably connect a conductor part of an electric wire to a flexible conductor of a sheet-shaped conductive member and can realize miniaturization. The first insulator (14) has a recessed portion (14C) formed in the first holding surface (14B) and a protrusion (14D) formed in the recessed portion (14C) and protruding higher than the first holding surface (14B), and the second insulator (15) has a protruding portion (15C) formed in the second holding surface (15B) and a recessed protrusion accommodating portion (15D) formed in the protruding portion (15C) and deeper than the second holding surface (15B). The conductor portion (13A) of the electric wire (13) is electrically connected to the flexible conductor (12A) of the sheet-like conductive member (12) between the outer surface of the protrusion (14D) and the inner surface of the protrusion accommodating portion (15D) by at least a portion of the protrusion (14D) being accommodated in the protrusion accommodating portion (15D).

The invention discloses a knowledge graph potential relationship mining algorithm based on semantic perception clustering. The knowledge graph potential relationship mining algorithm comprises the following steps: firstly, obtaining a user-article interaction bipartite graph and a knowledge graph; in the knowledge graph, semantic perception clustering is carried out on all the relations; a plurality of tables are established for each user, each row in the tables represents articles, each column in the tables represents relationships in the same cluster, and values in the tables represent entities between the corresponding articles and the relationships; and finally, through a proposed similarity calculation method, potential relationships are mined by utilizing pairwise relationships in the same cluster, and the potential relationships are fused into the original knowledge graph. According to the method, potential relationships in the knowledge graph are mined, and better links are established among the articles, so that useful information of the articles is enriched, the phenomenon of rare relationships in the knowledge graph is effectively improved, the limitation of the prior art is solved, and subsequent tasks such as natural language processing and system recommendation are facilitated.

The invention relates to flame-retardant and wear-resistant hydraulic oil and a preparation method thereof, and relates to the technical field of lubricating materials, the flame-retardant and wear-resistant hydraulic oil comprises the following components by weight: 1.6-2.4% of a modified molybdenum amine complex, 2.0-4.0% of a high temperature antioxidant, 0.5-1.0% of a low temperature antioxidant, 0.002-0.005% of a defoaming agent, and the balance of synthetic ester base oil, the modified molybdenum amine complex is a reactant of graphene oxide, isocyanate and a molybdenum amine complex, and the isocyanate comprises diisocyanate and / or polyisocyanate; the preparation method comprises a primary mixing step and a final mixing step. The hydraulic oil disclosed by the invention does not contain elements such as sulfur, phosphorus and chlorine, so that a friction pair is not easy to rust; the hydraulic oil does not contain ash, and is suitable for mechanical equipment with high cleanliness; compared with hydraulic oil mixed and added with a molybdenum amine complex and graphene oxide, the wear resistance of the hydraulic oil can be kept more lasting under the high-temperature condition.

The utility model relates to the technical field of mandrel links, and discloses a blow molding mandrel link convenient to replace, which comprises an inner chain plate, the front side of which is attached to the rear side of an outer chain plate; a blank seat pull rod is arranged at the upper end of the inner chain plate and attached to the outer chain plate, lifting rods are arranged in penetrating cylindrical grooves formed in the inner chain plate and the outer chain plate, lifting pieces are arranged on the lifting rods, and a rotation synchronous belt wheel is arranged on the right side of each lifting rod. According to the blow molding mandrel chain convenient to replace, the inner chain plate and the outer chain plate can be stably connected through the blank seat pull rod, and rotation of the lifting rod is not affected while the lifting rod is supported through the deep groove ball bearing; the self-rotating synchronous belt wheel and a belt on a common flat key matched equipment machine play a self-rotating role for the lifting rod, simple and easy-to-obtain materials are used in a matched mode, the machining time is shortened, cost is low, the manufacturing requirement is not high, model changing is fast, efficiency is improved, connection is simple, and operation is stable.

The invention relates to the technical field of ceramic metallization, in particular to a preparation method of metallized ceramic silver paste, which comprises the following steps: preparing nano flake silver powder with the thickness of less than or equal to 1nm and the radius-thickness ratio of more than or equal to 100; preparing glass powder; glass powder, nanometer flake silver powder and an organic carrier with the mass ratio of (1-5): (60-80): (30-40) are mixed, subjected to ball milling and then defoamed, the prepared silver paste has good bonding strength with an Al2O3 ceramic substrate after being sintered, the volume resistivity is low, and the conductivity is good.

The invention discloses a directionally solidified Fe-B-Si alloy surface protective film and a preparation method thereof. The Fe-B-Si alloy prepared by a directional solidification process is placed in liquid zinc for interfacial reaction. After the reaction is completed, the Fe-B-Si alloy is cooled to obtain a three-layer mortise and tenon structure protective film. The formed surface film and a metal substrate form a mutually interlocking mortise and tenon structure, which is firm and has high stability and density, and can effectively prevent surface peeling caused by zinc liquid cavitation.

The invention relates to the technical field of dynamic monitoring of tea quality, and particularly discloses an intelligent tea quality traceability system based on the Internet of Things technology, which is characterized in that environment humidity, tea moisture content and tea polyphenol content are respectively collected in real time, and the data are transmitted to a central processing system; a self-encoder and a Bayesian network are adopted to carry out depth feature extraction and probability dependency relationship modeling on collected data, a moisture content abnormal feature index and a tea polyphenol content abnormal feature index are generated, and finally a comprehensive abnormal feature index is obtained to evaluate whether the tea quality is qualified or not. The system calculates a humidity stability index through a wavelet decomposition method and identifies and quantifies abnormal fluctuation of environment humidity, an interference analysis and dynamic regulation and control module is constructed, the relationship between humidity stability and tea quality is evaluated by using a random forest model, and dynamic regulation and control of the environment humidity are realized.

The invention provides a water-retaining and sand-fixing agent with straw meal boxes as raw materials, a water-retaining and sand-fixing block and a preparation method of the water-retaining and sand-fixing block, and relates to soil water-retaining agents. The water-retaining and sand-fixing agent taking the straw meal box as the raw material is prepared from the following raw materials in parts by weight: 20 to 30 parts of straw meal box, 40 to 60 parts of bamboo powder, 10 to 20 parts of enzyme, 10 to 20 parts of xanthan gum, 10 to 20 parts of modified starch and 10 to 20 parts of bentonite, the raw material of the straw meal box comprises straw; the enzyme comprises ligninase and / or hemicellulase. According to the water-retaining and sand-fixing agent taking the straw meal box as the raw material, the straw meal box is used as the raw material, a traditional process of directly using straw for manufacturing is abandoned, and secondary utilization of waste is achieved.

The invention discloses a physiological gating system for a nuclear magnetic resonance environment, and belongs to the field of human body physiological signal acquisition and nuclear magnetic resonance gating. Comprising a physiological signal acquisition module and a physiological signal processing module, the physiological signal acquisition module and the physiological signal processing module are both controlled by an FPGA, and data are wirelessly transmitted between the physiological signal acquisition module and the physiological signal processing module; the physiological signal acquisition module comprises an electrocardio acquisition module, a pressure sensor module, a photoelectric blood oxygen acquisition module, an acquisition module FPGA (Field Programmable Gate Array) and a wireless communication module; the physiological signal processing module comprises a processing module FPGA, a wireless receiving module and a gating output interface. The physiological gating system for the nuclear magnetic resonance environment has the beneficial effects that the physiological gating system for the nuclear magnetic resonance environment is provided, synchronous acquisition of three physiological signals of electrocardio, respiration and blood oxygen is realized, a multifunctional fusion gating strategy is adopted, and the imaging stability is improved.

This utility model discloses an auxiliary fixture for machining self-tapping threads on a center stop, comprising: a base, a first positioning component, a second positioning component, and a cover plate; the first positioning component is mounted on the base, and the center stop to be machined is placed inside the first positioning component; the cover plate is connected to the base via the second positioning component; the cover plate covers the top of the base and the first positioning component. This utility model provides an auxiliary fixture for machining self-tapping threads on a center stop that is low in manufacturing cost, provides stable fixation, improves processing efficiency, and reduces scrap rate.

The present invention discloses an educational puzzle assembly, which includes at least two puzzles that are detachably spliced ​​together, wherein one of the two puzzles is provided with at least one circumferentially open connection channel and the outer end of the connection channel is located at the edge of the puzzle, and the other puzzle is provided with at least one through hole, a first threaded section is provided in the connection channel, a screw rod sequentially passes through the through hole and the connection channel, and the screw rod is threadedly connected to the first threaded section, and a positioning structure is provided between the puzzle with the through hole and the screw rod. The educational puzzle toy of the present application is used in the field of education, which can not only cultivate students' hands-on ability, but also can let children's imagination play freely because of the various splicing methods and high splicing strength, and children do not have to feel frustrated and lose interest because the splicing assembly cannot realize their imagination, and truly play the enlightenment and educational role of the educational puzzle assembly.

The invention relates to the technical field of ceramic metallization, in particular to a method for preparing a metallized ceramic silver paste, comprising the steps of preparing a nano-flaky silver powder with a thickness of ≤1nm and a diameter-to-thickness ratio of ≥100; preparing a glass powder; and mixing the glass powder, the nano-flaky silver powder and an organic carrier in a mass ratio of 1-5:60-80:30-40, ball-milling and degassing. The silver paste prepared by the invention has good bonding strength with an Al2O3 ceramic substrate after sintering, and has low volume resistivity and good conductive performance.

The invention relates to a nested modular guide beam structure which is formed by connecting a plurality of guide beam standard sections and a guide beam tilting section end to end, and the guide beam standard sections are arranged at the two ends of the guide beam structure; each guide beam standard section is of a box beam structure with two closed ends and two end surfaces vertical to the bottom surface; the guide beam tilting section with the same height as the guide beam standard section is of a box beam structure with two closed ends and the top shorter than the bottom, and the front end face of the guide beam tilting section is perpendicular to the bottom face; the two end faces of the guide beam standard section and the front end face of the guide beam tilting section are provided with the same connector assemblies, and any connector assemblies which are in butt joint can be connected through locking assemblies. The bottom of the rear end face of the guide beam raising section is hinged to the bottom of the end face of the guide beam standard section, the top of the rear end face of the guide beam raising section is connected with the top of the end face of the guide beam standard section through an angle adjusting mechanism, and the included angle between the guide beam standard section and the guide beam raising section is variable. The problem that the guide beam splicing space is narrow can be solved, and the bridging speed can be effectively increased.