77results about How to "Improve capacity utilization" patented technology

The invention discloses a space-air-ground integration-oriented full-decoupling network non-feedback transmission and resource dynamic allocation method. A solution is provided for space-air-ground multi-node cooperation resource management. The method comprises the steps that a channel state information prediction model based on deep learning replaces traditional feedback signals with user geographical location information, and multiple-input-multiple-output transmission is achieved; and a many-to-one matching model is designed and is used for realizing adaptive allocation of spectrum resource blocks among space-air-ground heterogeneous nodes, so that the matching stability is ensured, and the method has the characteristics of low complexity and rapid convergence. For cooperative transmission of multiple nodes and resource allocation among heterogeneous nodes, the spectrum efficiency of the system is improved through non-feedback channel state information prediction and a resource allocation mechanism. Compared with a single connection mode and polling-based resource scheduling in a traditional network, the flexible resource allocation algorithm disclosed by the invention remarkably improves the network capacity and improves the user communication quality.

The invention discloses a high-speed rail traction transformer capacity optimization design which comprises the following steps: collecting and analyzing actually measured load data of a high-speed rail traction substation, and constructing a typical load curve; and based on the typical load curve, establishing a transformer temperature rise model by using an exponential equation, and calculating the traction transformer winding hot-spot temperature and life loss. And then, optimizing the capacity of the traction transformer according to a calculation result so as to improve the capacity utilization rate and the economical efficiency of the transformer. The optimized transformer is subjected to field test to verify the performance of the transformer in actual operation, including but not limited to capacity utilization rate, temperature rise condition, energy efficiency ratio and the like. And according to a field test result, necessary adjustment and improvement are carried out on an optimization scheme. According to the method, the accuracy of the temperature rise model is ensured by determining the temperature rise relation between the winding hot-spot temperature and the top-layer oil temperature and solving the steady-state temperature rise by using the index equation. Meanwhile, the influence of the environment temperature change on the temperature rise is considered, and the applicability and accuracy of the model are improved.

The invention provides a converter molten steel temperature measurement and carbon determination method adopting a multispectral infrared detection technology, which belongs to the technical field of steelmaking and comprises the following steps: detecting molten steel in a converter by using a multispectral thermodetector; collecting infrared spectrum data of the molten steel; according to the Hough law and known spectral line characteristics, the temperature of the molten steel is reversely deduced through spectral data; through multi-channel data processing and algorithm optimization, the molten steel temperature is calculated in real time, and the measurement precision is improved. The sublance system directly extracts a high-temperature molten steel sample in the converter smelting process and pretreats the high-temperature molten steel sample; irradiating the pretreated sample by using an excitation light source, and exciting the carbon element in the sample to emit a spectral signal with a specific wavelength; selecting a specific wavelength in the molten steel for spectral analysis; acquiring the concentration of carbon in the molten steel according to the emission or absorption characteristics of gas molecules in the molten steel; the method comprises the following steps: establishing a model by utilizing multispectral data, and establishing a relationship between spectral characteristics and carbon content through a regression analysis or machine learning algorithm;

The invention discloses a domestication method and device for salt-tolerant activated sludge, and belongs to the technical field of microculture and sewage treatment devices. In order to solve the technical problems that in the prior art, domestication of salt-tolerant activated sludge is achieved in the mode that salinity is increased in a gradient mode, obtained sludge is poor in genetic adaptability and long in domestication period, the domestication method of the salt-tolerant activated sludge comprises the steps that fresh sludge with the sludge concentration MLSS being 5000-6000 mg / L and the MLSS / MLVSS being larger than or equal to 0.8 is put into a domestication device; the domestication device comprises an anaerobic-anoxic reaction zone and an aerobic reaction zone which are communicated with each other; the concentration of salt in the system is controlled to be 3-5%, when the CODcr removal rate is smaller than or equal to 30%, the CODcr concentration gradient is gradually increased at the gradient of 500-1000 mg / L in the modes of increasing nutrition addition, increasing the aeration rate of the aerobic reaction zone, returning the sludge in the aerobic reaction zone to the anaerobic-anoxic reaction zone, supplementing fresh sludge, discharging inactivated sludge and the like, and the obtained salt-tolerant activated sludge is good in heredity and high in salt tolerance. And the domestication period is short.

The invention discloses an electrified railway energy router system and a control method thereof, and relates to the technical field of electrified railway traction power supply. The back-to-back inverter BTB is composed of an inverter BTBalpha on the alpha-phase circuit side and an inverter BTBbeta on the beta-phase circuit side, and the direct current side of the cross-phase inverter IBI, the direct current side of the inverter BTBalpha and the direct current side of the inverter BTBbeta are all connected into the direct current bus DCB to form a star-shaped structure. The controller CC monitors and analyzes operation parameters of the traction load through a bidirectional signal port and controls output of renewable energy sources in the direct current source DS, charging and discharging of the energy storage device and working states of the cross-phase inverter IBI and the back-to-back inverter BTB, and the problems that a traditional back-to-back structure railway energy router is high in cost and difficult in engineering application are solved.

The present invention relates to the technical field of coffee machines, and in particular to a segmented heating portable coffee machine. The coffee machine comprises a coffee machine body, a water pump is arranged inside the coffee machine body, and the characteristics are as follows: a primary heating device is arranged at the water inlet end of the water pump, a secondary heating device is arranged at the water outlet end of the water pump, and the water after secondary heating is injected into the brewing component. Due to the segmented heating, that is, the water in the water tank is heated to a preset temperature before pressurization, when brewing coffee, the high-pressure water pump injects the preheated water into a sealed cavity and heats it again to a temperature suitable for brewing coffee. This not only reduces the temperature of the water flowing into the water pump and increases the working life of the water pump, but also heats the water pump while it is working to brew coffee, which saves the time of the entire process of making coffee and improves the user experience.

The invention discloses a positive electrode material and a preparation method thereof, an electrochemical device and an electronic device, the positive electrode material comprises a lithium element, a sodium element and nitrate ions, and based on the mass of the positive electrode material, the mass ratio of the nitrate ions is 0.001%-0.2%. The high-temperature cycling stability, the capacity utilization rate and the dynamic performance of the electrochemical device are improved, and meanwhile the impedance of the electrochemical device is reduced.

The invention relates to a gas-liquid separation device available for microgravity and lunar surface. The gas-liquid separation device comprises a gas-liquid separation cavity, a spiral flow guide structure, a metal net and two layers of porous media. The gas-liquid separation device is applied to a manned spacecraft environment control and life support system and is used for separating urine of astronauts from mixed gas-liquid fluid. A plurality of gas-liquid mixture inlets, an exhaust port and a liquid discharge port are formed outside the gas-liquid separation cavity, a spiral flow guide structure is arranged inside the gas-liquid separation cavity, and a layer of metal net is clamped between two layers of porous media below a flow guide plate. Gas-liquid mixed fluid enters the gas-liquid separation cavity through a plurality of inlet pipelines above and sequentially passes through the spiral flow guide structure, the metal net and the porous medium, finally liquid is discharged through a liquid outlet below the porous medium, gas in the gas-liquid mixed fluid is discharged through an exhaust port above the device, and gas-liquid separation in the urine mixed gas-liquid fluid is achieved.

The invention relates to a communication control method and device, computer equipment, a readable storage medium and a program product, which are applied to a control unit, are arranged in a system in which a ground terminal and a low-altitude terminal coexist, and are used for dynamically combining a cellular unit and a cellular-free unit in the system. The control unit is in communication connection with all cellular base stations on a flight path of the low-altitude terminal; the method comprises the following steps: determining a target cellular base station meeting requirements from adjacent cellular base stations according to network performance index values of the adjacent cellular base stations located around a low-altitude terminal and sent by the low-altitude terminal; adjusting the type of the target cellular base station to a mixed base station comprising a cellular unit and a non-cellular unit; wherein the ground terminal is served by the cellular unit, the low-altitude terminal is served by the non-cellular unit, and wireless resources are dynamically shared between the cellular unit and the non-cellular unit in the hybrid base station. By adopting the method, the same-frequency interference when the ground network and the low-altitude network coexist can be reduced.

The utility model relates to the field of automobile parts manufacturing equipment especially, and more particularly to a kind of diversified drying rack for automobile parts foam mold manufacturing, including main frame, the bottom of main frame is equipped with several moving wheels, several installation blocks are installed at intervals on main frame, and slidingly connected with support rod between transverse corresponding installation blocks, installation block is used to support support rod both ends, the side of installation block and support rod contact is slidingly connected with top block, reset spring is arranged in installation block, one end of reset spring is connected in installation block, other end is connected with the side of top block, the other side of top block is slidingly connected with support rod, and top block is provided with arc surface matched with support rod, and auxiliary assembly for placing small parts is arranged between support rod. Through the dynamic cooperation of detachable support rod and top block mechanism, the distance between support rods is changed, different thickness foam molds are merged, stacked or accommodated, the purpose of improving the volume utilization of drying room is achieved, the drying frequency is reduced, and the drying energy consumption is reduced.

The utility model discloses a material stacking homogenization device, it is through setting linear reciprocating type push mechanism of evenness mechanism on the receiving container top, actively redistribute the material of fixed point accumulation in the receiving container, apply to automatic cat litter basin after thoroughly eliminated the uneven distribution of local bulge of traditional automatic cat litter basin because of the concentrated material of waste, effectively improved the volume utilization of automatic cat litter basin collection convenient storehouse, simultaneously, the waste of automatic cat litter basin even spreads flat provides the smooth bag mouth closure foundation for subsequent packing operation, effectively avoided the failure such as melt seal failure, broken bag leakage, finally reached the comprehensive benefit of prolonging the collection convenient period, reducing the maintenance frequency, improving user experience.

This invention discloses a multi-branch battery pack high-voltage system and its control method. The multi-branch battery pack high-voltage system includes: multiple battery pack branches, a charging control module, and a discharging control module. Each battery pack branch includes a battery pack, a battery drain interrupter (BDU), and a bidirectional DC-DC converter module. The battery pack is connected to the input terminal of the BDU. The BDU has a main circuit and an equalization circuit. The main circuit controls the on / off of the main power of the battery pack branch it belongs to. The BDUs of each battery pack branch are connected to each other through the equalization circuit for active equalization between branches. The output terminal of the BDU is connected to the input terminal of the bidirectional DC-DC converter module, which controls the charging and discharging current of its respective battery pack branch. The output terminals of all bidirectional DC-DC converter modules are connected in parallel and then connected to the charging control module and the discharging control module. This invention can solve the circulating current problem between battery packs and improve the stability of the multi-branch battery pack high-voltage system.

The embodiment of the invention discloses a negative electrode plate, a preparation method thereof and a battery, and belongs to the technical field of batteries, the negative electrode plate comprises a negative electrode active layer, and the negative electrode active layer is made of a silicon-based negative electrode material, a conductive agent and a binder. Wherein the conductive agent comprises a first conductive agent and a second conductive agent, the first conductive agent comprises at least one of graphite, Super P and acetylene black, and the second conductive agent comprises an oxide solid electrolyte and a polymer solid electrolyte. According to the negative plate provided by the embodiment of the invention, high energy density and high capacity can be ensured, an ion conductive network is constructed, negative ion channels are increased, ion impedance is reduced, and the capacity exertion rate and the effective capacity exertion rate are improved.

This utility model belongs to the field of material cylinders, and specifically discloses a material cylinder with the following technical solution: the length of the material cylinder is less than or equal to the effective distance between the plugs of the two working chambers. The material cylinder includes a cylinder body, with a cylinder bottom and a cylinder cover at both ends. A side opening is provided on the cylinder body, and multiple drainage holes are distributed on the cylinder body excluding the side opening. This utility model's material cylinder structure is simple, improving the volume utilization rate of the material cylinder and reducing its cost. Furthermore, by adding a wear-resistant structure to the material cylinder, its service life is extended.

The utility model provides a powder spraying device. The powder spraying device comprises a sprayer, the sprayer comprises a driving device, a turntable and a mounting piece, the turntable is fixedly connected with the output end of the driving device; the turntable comprises a chassis and at least one blade; the blades are arranged on the upper surface of the chassis; and the mounting piece is connected with the driving device. According to the utility model, the volume utilization rate of the material storage equipment is close to 100%, and the volume utilization rate of the material storage equipment is obviously improved. Furthermore, the sprayer is wide in application, can be applied to material storage equipment in various fields, and can save labor force and cost.

The application relates to the technical field of intelligent logistics, in particular to an order dispatching method and system for intelligent logistics. The method comprises the following steps: dividing a logistics area into multiple grids; in response to a new order event, generating a preset initial value of a profit pheromone; acquiring a transport capacity node density in each grid, and generating a congestion pheromone when the transport capacity node density exceeds a preset threshold; calculating a composite pheromone in a preset grid range for each transport capacity node; based on the composite pheromone, calculating a state transition probability of the transport capacity node moving to an adjacent grid or accepting an order by using a probability selection algorithm; and generating a dispatching instruction according to the state transition probability of each transport capacity node. By means of the double pheromone mechanism, the problems of global supply-demand imbalance and local transport capacity congestion in the traditional dispatching method are effectively solved, and the scheduling efficiency and response speed of the logistics system are significantly improved.

The present invention discloses an ultra-high stability phenazine alkaline aqueous organic liquid flow battery electrolyte and a liquid flow battery, belonging to the field of electrochemical energy storage technology. The electrolyte contains a cyclic supramolecule with a hydrophobic inner cavity and a hydrophilic outer cavity, a phenazine organic rigid conical cavity structure, and an alkaline aqueous solution. The cyclic supramolecule is cyclodextrin or its derivatives, which can improve the reaction kinetics of phenazine organic matter, improve utilization and stability, have the advantages of easy raw material availability, simple operation and low cost, and can realize an alkaline aqueous organic liquid flow battery with smaller polarization, higher capacity utilization, better rate performance, higher energy efficiency and better stability.

The invention provides a novel energy storage system based on carbon dioxide phase change characteristics and an operation method thereof. The novel energy storage system comprises an air compression process, a propane cold energy storage process, a carbon dioxide expansion power generation process, a heat energy loop and a cold energy loop. The volume utilization rate of the storage tank is remarkably increased, the construction cost is reduced, the system efficiency is greatly improved through cold energy gradient utilization, and the expansion power generation process is efficient and stable.

The invention relates to a multiple access method suitable for an unmanned aerial vehicle self-organizing network, which comprises the following steps of: matching and scheduling differentiated time domain, frequency domain and airspace network resources for each node in the network by comprehensively utilizing omnidirectional and directional communication modes in different operation stages of the network; in a network service interaction process, a time-frequency-space multi-dimensional access resource allocation scheme is generated by utilizing a directional narrow beam multi-receiving characteristic and adopting a network access resource allocation algorithm based on packet circulation, and capacity expansion and efficient operation of the unmanned aerial vehicle self-organizing network are realized.

The invention relates to a voltage vector compensation-based power decoupling control method and device for a network-constructed inverter, computer equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring power information of a grid-connected point of the grid-forming inverter, and acquiring voltage vector compensation of the grid-forming inverter; according to the power information of the grid-connected point and voltage vector compensation, obtaining voltage loop control information for the grid-forming inverter; obtaining current inner loop control information for the network-forming inverter according to the output voltage of the network-forming inverter; the output voltage is obtained according to the switching state of a switching device in the grid-forming inverter in the current period; and based on the voltage loop control information and the current inner loop control information, decoupling processing is carried out on the output power of the network-forming inverter. By adopting the method, the problem of output power coupling of the grid-forming inverter can be eliminated, and the capacity utilization rate of the inverter is improved.

The present invention provides a high-throughput satellite frequency allocation method based on carrier-to-interference-noise ratio calculation and optimization, comprising randomly generating a plurality of feasible solutions for frequency allocation under constraints such as different frequencies of adjacent carriers and bandwidth requirements of each carrier as an initial population, performing frequency optimization allocation based on a differential evolution algorithm, iteratively selecting individuals with the best system capacity matching rate as a system frequency allocation plan through operations such as mutation and crossover, and in the iterative adjustment process of the frequency allocation plan, considering the influence of the frequency plan adjustment on the system carrier-to-interference-noise ratio, performing dynamic quantitative analysis on the system carrier-to-interference-noise ratio based on statistics, and then accurately predicting the real-time system capacity matching rate, finding a nearly optimal frequency allocation plan, and improving the effective capacity of the satellite and resource utilization.

The present invention relates to the field of battery management, and discloses a battery cell consistency management method and system for an energy storage module, comprising the following steps: performing multiple charge and discharge tests on a battery cluster in the energy storage module to obtain multiple voltage data sequences of the corresponding battery cluster, obtaining a voltage data sequence of each battery module of the battery cluster based on multiple sets of voltage data sequences, obtaining a voltage change value of the battery module according to the voltage data sequence of the battery module, obtaining the charge and discharge consistency of the battery module according to the voltage change value of the battery module, arranging the voltage data sequence of each battery module with consistent charge and discharge consistency according to the battery module sequence number, and if the voltage consistency of the battery cluster is consistent, obtaining the battery capacity of the energy storage module after consistency management according to the capacity of all battery clusters after consistency management, and completing battery management. The present invention reduces the non-balanced aging phenomenon of the battery module and prolongs the service life.

This utility model provides a refrigerator, including: an evaporator, a freezer compartment, a drain pipe, an outer pipe, and an insulation layer. The evaporator is located above the freezer compartment, and the insulation layer is located on one side of the freezer compartment in the horizontal direction. At least a portion of the drain pipe is disposed within the insulation layer. The outer pipe is sleeved on the outer periphery of at least a portion of the drain pipe or disposed on the inner periphery of at least a portion of the drain pipe. Condensate generated by the evaporator can be received in the drain pipe, and refrigerant can be introduced into the outer pipe so that the refrigerant can heat the condensate and prevent the drain pipe from freezing or frosting. This utility model can simultaneously achieve a thinner overall refrigerator size and ensure that the drain pipe does not freeze or frost; effectively solving the problem in existing refrigerators that cannot simultaneously ensure that the evaporator drain pipe does not freeze or frost and achieve a thinner overall refrigerator size.

Embodiments of the present application provide a file processing method and device, a storage medium and an electronic device, wherein the method comprises: scanning first file index information in a first merged file to obtain a first scanning result, wherein the first merged file is a merged file obtained by merging a first group of files, and the first file index information is used to indicate whether the first group of files in the first merged file is deleted; in a case where the first scanning result indicates that a first part of files in the first group of files is deleted and the deleted first part of files satisfies a preset first compaction condition, performing a merging operation according to first remaining files to obtain a second merged file, the first remaining files being files other than the first part of files in the first group of files, and the storage positions of the first remaining files in the second merged file being continuous. Through the embodiments of the present application, the problem of low capacity utilization of the storage system in the related art is solved.

The invention belongs to the technical field of vehicle heat management, and particularly relates to a vehicle heat management system, a vehicle-mounted air conditioner and an electric automobile, the vehicle heat management system comprises a compressor, a heated object, a passenger compartment evaporator, a plurality of electronic expansion valves and a plurality of heat exchangers, and at least one heat exchanger is located in a loop on the side of the heated object; a high-temperature refrigerant flowing out of the compressor enters the heat exchanger in the heated object side loop through an electronic expansion valve for heat exchange to obtain a low-temperature refrigerant, the low-temperature refrigerant enters the passenger compartment evaporator through another electronic expansion valve, and refrigerating of a passenger compartment is achieved. The problems of user comfort and refrigerator volume utilization rate are solved.

The present invention provides a low-temperature full-volume tank with a low-liquid-level material extraction device, comprising an inner tank, an outer tank, an operating platform and a material extraction device capable of extracting low-liquid-level materials; the material extraction device comprises a material circulation tank and a cryogenic pump installed on the operating platform, a first venturi mixer installed at the bottom of the inner tank and corresponding connecting pipelines; the low-temperature medium in the material circulation tank can enter the first venturi mixer through the cryogenic pump and the introduction pipeline, so that the low-temperature medium in the inner tank can enter the first venturi mixer through the suction hole of the first venturi mixer under the action of pressure difference, and enter the material circulation tank through the outlet pipeline after mixing. The present invention can extract the low-liquid-level low-temperature medium in the pump column of the low-temperature full-volume tank that cannot be extracted by the submersible pump, reduce the ineffective volume of the low-temperature full-volume tank, and improve the volume utilization rate of the full-volume tank; the low-liquid-level material extraction device can also be used as a backup extraction facility other than the pump column.

This invention discloses a preamble-free access TA synchronization method and apparatus that saves time-domain resources, comprising: coarse search for candidate TAs: selecting multiple TA candidates within a preset range with a fixed step size; signal preprocessing: receiving repeatedly transmitted Msg3 frames and obtaining the frequency domain data corresponding to each TA candidate; parallel soft combining and score calculation: performing channel estimation, equalization, and descrambling on each candidate data in parallel to obtain descrambling LLR soft bits, and accumulating their absolute values ​​to calculate the synchronization score of each candidate; candidate selection and decoding verification: sorting by score and selecting high-scoring candidates for decoding and CRC verification; synchronization confirmation: using the successfully verified TA as the final synchronization quantity. This invention saves preamble time slots and response windows, significantly reducing access latency and resource consumption.

The application discloses a kind of cascade utilization battery pack power energy storage system, including cascade battery module, basic energy storage unit, bidirectional DC / DC converter, DC bus, bidirectional DC / AC converter, sensor assembly, solid-state switch group and controller.The application compared with prior art has the advantages that a kind of cascade utilization battery pack power energy storage system, including cascade battery module, basic energy storage unit, bidirectional DC / DC converter, DC bus, bidirectional DC / AC converter, sensor assembly, solid-state switch group and controller;The cascade battery module is divided into A, B, C three grades by comprehensive health index evaluation, and the same grade 4 cascade battery modules are connected in series to form a basic energy storage unit;Each basic energy storage unit is connected to DC bus by independent bidirectional DC / DC converter, and DC bus is connected to power grid or load by bidirectional DC / AC converter;Each basic energy storage unit is equipped with sensor assembly and solid-state switch group, and can independently complete system access or cut-off.

The utility model relates to the field of fruit picking, disclose fruit negative pressure bionic picker, including bottom plate, bottom plate front end one side fixed setting is no. 1 motor, no. 1 motor output end fixed setting has lead screw, the outer end threaded sleeve of lead screw is equipped with movable block, the movable block upper end fixed setting has negative pressure air pump, the bottom plate upper end is away from the side of fixed plate and is equipped with mounting groove, the mounting groove front end fixed setting has no. 2 motor, no. 2 motor output end fixed sleeve has driving gear, the rotating setting of mounting groove inner end middle position has rotating column, the rotating column upper end fixed setting has collection box, the rotating column outside upper end fixed sleeve of leaning has driven gear. In the utility model, after no. 2 motor starts, the collection box will begin to rotate, help even distribution fruit, reduce single cell overload risk, after starting no. 1 motor, can adjust the position of negative pressure air pump, make the hose body can adapt to different personnel station and work distance.

The application relates to a medical elevator control method, system and terminal, and relates to the technical field of elevator control, and comprises the following steps: collecting a pre-boarding trigger signal of actually boarding an elevator; collecting the total number of boarding personnel of actually boarding the elevator based on the pre-boarding trigger signal; judging whether the total number of boarding personnel meets the requirement of a preset boarding personnel quantity threshold; if yes, collecting boarding check-in information of actually boarding the elevator, and determining an elevator dynamic partition according to the boarding check-in information; if not, defining the total number of boarding personnel as a to-be-allocated personnel quantity, and analyzing the to-be-allocated personnel quantity and the corresponding actually boarding elevator to determine the elevator dynamic partition; and controlling the actually boarding elevator to transport medical personnel according to the elevator dynamic partition. The application has the effect of improving the utilization rate of the carrying capacity of the medical elevator.