93results about How to "Expandable" patented technology

The invention relates to a system and a method for positioning a mobile robot based on regular graphic code composite tags. The system comprises a regular graphic code positioning controller, a regular graphic code reader, a radio frequency identification (RFID) tag code reader, and the regular graphic code composite tags which are distributed on the ground, wherein each regular graphic code composite tag is formed by compositing a regular graphic code tag and an RFID tag. The method comprises the following steps of: (1) establishing an image coordinate system, a trolley coordinate system and a world coordinate system; (2) calculating the deviation position and position angle of a mobile robot trolley relative to each composite tag in the trolley coordinate system; (3) calculating the deviation position and angle of each composite tag relative to the world coordinate system; and (4) calculating the deviation position and angle of the mobile robot trolley relative to the world coordinate system. The invention is reasonable in design, the characteristics of the regular graphic code tag and the RFID tag are effectively combined, a function of accurately positioning the mobile robot trolley is realized, and positioning efficiency is improved.

The invention relates to an automatic guided vehicle based on magnetic-nail map navigation. The automatic guided vehicle is composed of a vehicle-mounted sensor, an actuator, and a controller. The vehicle-mounted sensor consists of a magnetic ruler, an inertial navigation module, a speedometer, and an RFID reader. The actuator includes a steering system, a braking system and a power system. The guided vehicle is driven on a lane with a magnetic nail; the coordinate of the magnetic nail on the road is known and is stored into the controller; the controller uses the magnetic ruler to measure relative positions of the magnetic nail and the vehicle body on the lane, thereby realizing high-precision positioning of the vehicle. With the inertial navigation module and the speedometer, data fusion is carried out by combining the magnetic nail coordinate information; the controller can calculate an absolute position of the vehicle precisely and continuously; and the actuator is used for realizing high-precision positioning and autonomous driving. According to the invention, the automatic guided vehicle is suitable for various automatic workshops and logistics warehouses. With the vehicle, the manpower can be reduced effectively; and the workshop operation efficiency is improved. The automatic guided vehicle has advantages of high positioning accuracy, excellent control performance, low cost, high reliability, and low maintenance cost.

The invention discloses a universal preparation method of high-entropy alloy nanoparticles and application of the high-entropy alloy nanoparticles in thermocatalytic selective hydrogenation and acidicelectrolyzed water anode catalysis. Various alloys and high-entropy alloy nanoparticles can be prepared by utilizing a surface metal organic salt pyrolysis reduction method, metal organic salt is dispersed on the surface of a carrier in a molecular manner to form a metal organic salt film , an organic ligand is thermally decomposed to expose isolated metal atoms, and multi-component metal atoms are aggregated to form the uniform high-entropy alloy nanoparticles. According to the PtIrFeCoNi/XC-72 high-entropy alloy nanoparticles prepared in the embodiment of the method, the service life of PtIrFeCoNi/XC-72 is close to three times of the service life of commercial IrO2 under the extreme condition of the current density of 50mA/cm<2>; and therefore, it is shown that the high-entropy alloy has high stability and corrosion resistance, so that the high-entropy alloy nanoparticles become one of the most competitive catalysts in the acidic oxygen evolution reaction. The method for nanocrystallization of the high-entropy alloy has the advantages that universality is achieved, the method is simple and easy to implement, equipment is simple, and the carrier can be replaced and removed, and anew way and a new thought are provided for application of the high-entropy alloy nanoparticles to the fields of catalysis, energy, the environment and the like.

The invention discloses a method for using a robot to real-time and dynamically position and monitor an indoor object based on RFID. According to the invention, RFID and a robot are utilized to address poor real-timeness and high cost of indoor positioning and monitoring. The method includes the following steps: arranging "positioning-assistant labels" on indoor fixed objects for positioning coordinates and a "positioning-required label" on an object for performing positioning and monitoring, mounting a RFID reader on a walking robot, the RFID reader and labels conducting information interaction; providing label ID, type and monitoring object information to a label encoding; sorting signals detected by the reader in a stronger-weaker signal intensity order in correspondence to a near-far distance order, the robot updating the coordinate thereof through the "positioning-assistant labels", detecting the "positioning-required label" by obtaining the distance between the robot and the object on the basis of the signal intensity classification, realizing positioning, storing the result to a database, determining safety, and if the result turns to be unsafe, sounding the alarm. According to the invention, the method requires simple computing, is fast to respond, has low cost, and is flexible to set. The method is applied to monitoring object safety in exhibition venues, warehouses, etc, and the safety of people in elder houses and kindergartens, etc.

A related leak-stopping agent for an oil-base drilling fluid comprises the following compositions in percent by weight: 15-20% of fiber, 10-25% of juglans regia vshell, 20-40% of an oil-absorptin polymer particle, and 40-60% of an oil-base juglans-regia-shell expanding plugging agent. The leak-stopping agent for the oil-base drilling fluid is obtained by uniformly mixing the above raw materials. The leak-stopping agent is simple in preparation technology, good in lipophilicity, good in suspension stability and expanding performance, and good in plugging effect.

The invention belongs to the technical field of engine modeling and provides a method for modeling the starting process of a micro gas turbine engine. The method comprises the following steps: modeling the rotational speed of the micro gas turbine engine; modeling the relationship between performance parameters and speed of micro gas turbine engines; performing error analysis. Existing modeling methods of micro gas turbine engine are mostly based on pure mechanism or machine learning, which is difficult to accurately describe the starting process of micro gas turbine engine, and machine learning requires a large number of experimental data. In the engineering practice, the pure mechanism operation is complicated, the efficiency is low, and the modeling accuracy is not high. The invention provides a method for modeling a starting process of a micro gas turbine engine based on the combination of a mechanism and an identification method, which makes up for the shortcomings of the prior art. The invention has the advantages of simple operation and high accuracy, and can realize the modeling of the whole micro gas turbine engine. This method has certain expansibility and can be extendedto other fields.

The invention relates to a water-based drilling fluid plugging agent. The water-based drilling fluid plugging agent comprises, by mass, 10% to 20% of fibers, 15% to 25% of walnut shells, 20% to 45% of water-absorbent polymer particles, and 40% to 55% of core-shell polymer microspheres. The water-based drilling fluid plugging agent is prepared through uniformly mixing the above raw materials in a content ratio at the normal temperature under normal pressure. The plugging agent is prepared through simple processes, and has good hydrophilicity, good suspension stability, good expansion performance and good plugging effects.

The invention discloses an index building method for a distributed memory columnar database. The method comprises the following steps: segmenting a single column of data into at least two data fragments; computing intermediate data of columnar compression indexes of the data fragments and intermediate data of row table vectors in parallel, wherein the columnar compression indexes include dictionary vectors, index vectors and position vectors; and sequentially storing and updating the intermediate data of the columnar compression indexes of the data fragments and the intermediate data of the row table vectors in order to form the columnar compression indexes and the row table vectors. Through adoption of the index building method for the distributed memory columnar database provided by the invention, an excessively large memory is not required for import computing nodes of a huge table, so that the hardware cost can be reduced.

The invention relates to an injection for treating skin defect, which mainly comprises cell component and platelet-rich blood plasma, the content of the cell component in per milliliter of the injectable filler is ten million to fifty million, and the content of platelets is 100 to 700 multiplied by 106; and the cell component is at least one of dermal fibrotic stem cell, fibrotic precursor cell and fibroblast which are obtained by culturing and expanding aborted foetus kin or circumcised neonatal foreskin in vitro in low or no serum. The platelets are extracted from the autoblood of a treated patient as well. The invention also provides a preparation method for the injectable soft tissue filler. The invention has the following advantages that: after injection, notable filling and repairing effects can be shown at once, moreover, the curative effect is persistent, the treatment procedure is simple.

The invention discloses a vision based self-learning industrial intelligent detection system and method. The system comprises an imaging unit, a calculation unit, a communication unit and a control unit. The calculation unit comprises a detector, a tracker, a training control unit, a neural network classifier and a classifier parameter control unit. According to the system and method, a neural network model is trained via small batch of data to identify types of objects detected in an image; an identification result as interaction output is provided for a user; the user verifies the identification result via manual calibration, a neural network trainer uses the identification result as a training mark, and the accurate rate is improved in real time; and manual intervention is reduced gradually. The system can be used to identify different objects, and the model parameters are further optimized to improve the identification efficiency constantly.

The invention discloses an Internet-of-Things based level display method and system. The system comprises a measurement and calculation unit, a level device and a smart terminal. People can view their own levels more visually without any operation (such as accessing an APP for viewing and opening a specified web page), and user experience is improved to a large extent; people can view their level status at any time, so that people are urged to take corresponding user actions to raise level. Therefore, viscosity and activeness of people are improved greatly; the level display system displays levels onto the level device through a level system, and utilization rate of the level system is improved. The method has the advantages that diversified factors in user actions are taken into full consideration, and user levels measured and calculated are more accurate and fairer; the level algorithm has expandability, all considered factors can be inputted or added, and accuracy and fairness of the acquired user levels are ensured.

The invention belongs to the technical field of thermodynamics, and particularly relates to a reconfigurable all-thermal super surface capable of presenting infrared thermal phantom and being invisible under visible light. The all-thermal super surface is formed by periodically extending structural units in the same plane, wherein a heat source is positioned at the bottom of the super surface structure, heat flow is transmitted in the direction perpendicular to the plane, heat is transmitted in the structure in a heat conduction mode, the structural surface is transmitted to the surrounding environment in a heat convection and heat radiation mode, heat insulation is considered between the units and the side face of the whole super surface, and the functions of hiding under visible light and presenting the thermal phantom under infrared light are achieved for an object; the structural unit is a rectangular cylinder, and a cylindrical open cavity is formed in the center of the structuralunit; and a specific phantom is displayed under infrared light by utilizing the heat radiation cavity effect. The method is suitable for steady-state or transient conditions and is suitable for the condition that the background temperature is uniform or changed. Different from a previous mechanism for realizing infrared thermal phantom, the application range is greatly expanded.

The invention relates to a micro-structure corneal contact lens and a preparation method thereof. The corneal contact lens adopts a mechanical flexible material and comprises a porous grid structure of a hollow annular layout formed by one or more deformable elastic mechanical units according to one or more distribution rules, wherein the annular layout is formed by periodically annularly and radially combining and distributing or orthogonally combining and distributing the deformable elastic mechanical units. The micro-structure corneal contact lens and the preparation method thereof with certain biological tearful eyes detection capacity are low in cost, expandable, capable of being customized and capable of realizing the mass production and wide in application range of people.

The invention relates to a method for automatic switching of an emergency power supply of a series network. A power grid is formed by n substations which are connected in series and have same voltage grade; when a fault occurs in the power grid, comprehensive logic judgment is carried out to determine a fault position according to panoramic energization information, received in real time, of the substation series network, a fault isolation scheme is executed, and a switch of the emergency power supply is rapidly switched on, so that a power supply network is rapidly and accurately recovered; a series power supply loop is formed by n substations which are connected in series and have same voltage grade, only a master station is arranged, and each of the substations with same or different voltage grades is provided with a control sub-station; the control master station is used for completing the automatic switching function of the emergency power supply of the network, and each control sub-station is mainly used for completing conventional automatic switching and functions of acquiring, judging and executing local data; and when the fault occurs in the power grid, the comprehensive logic judgment is carried out to determine the fault position according to the panoramic energization information, received in real time, of the series network, the fault isolation scheme is executed, the switch of the emergency power supply is rapidly switched on, so that the power supply network is rapidly and accurately recovered.

The invention discloses a solid oxide fuel cell stack. The solid oxide fuel cell stack comprises a cell base, a gas distribution plate, cell repeating units, a negative end plate and a positive end plate, the gas distribution plate is fixed in the battery base, and a fuel cavity is formed between the gas distribution plate and a bottom plate of the battery base; the bottom ends of the negative endplate and the positive end plate are fixed in the cell base; the number of the cell repeating units is more than two, the cell repeating units are sequentially arranged between the negative end plateand the positive end plate side by side, and a gap is reserved between every two adjacent cell repeating units and used for air to penetrate through. The bottom ends of the cell repeating units are fixed on the upper surface of the gas distribution plate through a first sealing piece; the cell repeating units, the negative end plates and the positive end plates are connected through connectors toform electric series connection between two adjacent cell repeating units; a fuel inlet is formed in one side of the battery base, fuel is introduced into a fuel cavity in the battery base through the fuel inlet, and then the fuel is distributed into each cell repeating unit for reaction power generation.

The invention discloses an oil immersion and cleaning integrated system for automobile valve guide pipe processing. The oil immersion and cleaning integrated system comprises a bottom box and a top plate fixedly mounted at the top of the bottom box through a support column, wherein a circular groove is formed in the bottom of the top plate; a rotating mechanism is arranged on the top plate; and buffer assemblies are fixedly connected to two sides of the bottom of the rotating mechanism separately. The invention relates to the technical field of automobile part processing equipment. According to the oil immersion and cleaning integrated system for automobile valve guide pipe processing, cleaning treatment and oil immersion treatment of multiple batches of products can be completed at the same time through one-time processing, and the purpose that oil immersion treatment and cleaning treatment of multiple batches of products are completed at the same time by feeding multiple batches of products at a time and freely switching cleaning and oil immersion on the same equipment is well achieved. The situation that the production efficiency cannot be improved more efficiently due to limitation of the automation degree of automatic equipment is avoided, the expansibility is better achieved, and the production efficiency of the valve guide pipe is improved more efficiently.

The invention discloses a cluster-based information pushing method and apparatus, a computer device and a storage medium. This method includes the steps of obtaining a similar user clustering result of a target node through a user-item bigraph corresponding to a user-scoring matrix, obtaining the final score between every item node in the target and the user-item bigraph to form a final scoring set according to the user-scoring matrix, a similar user clustering result and a preset final scoring algorithm, obtaining a corresponding item node set according to the final score greater than a preset scoring threshold in the final scoring set and pushing the item information corresponding to each item node in the item node set to a receiving terminal of the target user. This method avoids the sparse matrix and cold start problem inherent in the recommendation system, and has expansibility and high performance, realizing a more optimized information recommendation method.

The invention belongs to the technical field of paste filling, in particular to a numerical simulation method of paste filling pipeline erosion, which is characterized by comprising the following steps: 1) carrying out density test on a target paste filling slurry, and obtaining slurry density under conditions of different concentrations and different cement-sand ratios according to test data; 2)carrying out rheological test on that target paste filling slurry, and fitting the relationship between the viscosity of the target paste filling slurry and the shear rate; 3) establishing a mathematical model of that pipeline flow of the target paste filling slurry according to the hydrodynamic motion equation, and obtaining the variation law of the velocity and the pressure of the paste fillingslurry in the pipeline flow process. The invention can more accurately predict pipeline erosion under different conditions, and provides a theoretical basis for maintenance of the filling pipeline andmonitoring of erosion damage. The magnetic numerical simulation method is quantitative, operable, extensible and expandable.

The invention relates to a heat-resistant coating, in particular to a low-VOC organic-solvent-free heat-resistant water-based coating and a high-temperature-resistant and corrosion-resistant coating prepared from the coating, and belongs to the technical field of coatings. According to the low-VOC organic-solvent-free heat-resistant water-based coating, the coating is mainly prepared from the following raw materials in percentage by weight: 5-30% of engineering plastic particles, 0-15% of PTFE, 0.1-2% of pigment, 0.5-5% of functional filler, 0.1-5% of functional aid and the balance of water, and the total weight of the raw materials is 100%. The engineering plastic particles are added in the form of engineering plastic dispersion liquid. The low-VOC organic-solvent-free heat-resistant water-based coating does not contain an organic solvent, the film-forming baking temperature is relatively low, and the matrix resin of the coating is an engineering plastic dispersion liquid. The organic solvent refers to organic solvents such as N-methyl pyrrolidone, N, N-dimethylformamide, N, N-dimethylacetamide, benzene and the like.

The invention discloses a novel method for designing an M*N nonen matrix. The Norn matrix comprises a phase shifter and a coupler, the value of the phase shifter is set as follows: the scattering matrix of the coupler is [S], each input port is isolated from other input ports as seen from the scattering matrix [S], and in order to design the Norn matrix meeting the requirements, the parameters ofthe phase shifter and the coupler are required to be solved. The feed network based on the nonel matrix or the nonel matrix has the advantages of convenience and expansibility for any number of antennas (output ports) and radiation beams (input ports). The novel method for designing the M*N nonen matrix is simpler and more suitable for programming calculation.