129results about How to "Improve transmission performance" patented technology

The utility model discloses a head-swinging wiring mechanism, which comprises a rotary tank chain, a rotary shaft, a rotary shaft pipeline, a partition plate and a fixed seat, the movable end of the rotating tank chain is fixedly mounted on the rotating shaft, and the fixed end of the rotating tank chain is fixedly mounted on the fixed seat; the rotating shaft drives the movable end of the rotating tank chain to do + / -180-degree circumferential rotation when doing circular motion; the rotating shaft pipeline enters the rotating tank chain after being fixed at the movable end of the rotating tank chain, is led out from the fixed end of the rotating tank chain and is fixed, and the rotating shaft pipeline is driven to rotate simultaneously when the rotating tank chain rotates; and the partition plate is mounted on the fixed seat. The rotary tank chain wiring structure of the swinging head wiring mechanism is simple, a pipeline is free of friction in the moving process, the problem of pipeline abrasion is greatly solved, the failure rate is reduced, and it is ensured that the stable connection and transmission performance of the wire can be kept in the swinging head moving process.

The application provides a kind of collaborative congestion control method based on attention-driven multi-path TCP sub-flow dependency modeling, MPTCP connection is established by sending end and receiving end;Subflow running data is read from MPTCP protocol stack by state monitoring module;Each subflow feature of the normalized state matrix input is weighted and fused by using self-attention layer;Action vector A is generated by Actor network t , and the effective congestion window of each subflow is used as the available sending window constraint when sending data;Action value Q is generated by Critic network;Reward R is calculated by reward calculation module t ;Form collaborative congestion control model;Realize online adaptive control;This method can realize unified decision and collaborative control of multiple subflows, can realize collaborative consistency of congestion control effect and scheduling result, and can improve the stability and comprehensive performance of multi-path transmission.

The application discloses a negative active material, a preparation method of the negative active material, a secondary battery and an electric device, and the negative active material comprises a silicon-based material, a carbon coating layer arranged on the surface of the silicon-based material, and a titanium oxide layer arranged on the surface of the carbon coating layer, and the electron paramagnetic resonance spectrum of the negative active material has a characteristic peak at g=2.002-2.004. The application sets the titanium oxide layer containing oxygen defects on the surface of the carbon-coated silicon-based material, improves the rate performance on the basis of improving the initial coulomb efficiency and the cycle performance, and has a wide application prospect.

The application discloses a waterproof multi-rotor unmanned aerial vehicle motor, and relates to the technical field of motors. The waterproof multi-rotor unmanned aerial vehicle motor comprises a protective shell, a power source and a bearing assembly, the bearing assembly comprises a threaded column and a bearing pallet, the top end of the threaded column is fixedly connected with the side of the bottom of the protective shell, the bearing pallet is sleeved on the surface of the threaded column through a round hole, the top of the bearing pallet is fixedly connected with a rectangular sealing gasket, a locking nut is fixedly installed on the surface of the threaded column in a threaded mode, an annular tapered inclined surface is formed in the center of the bottom of the locking nut, a fastening nut is fixedly installed on the bottom of the surface of the threaded column in a threaded mode, the top of the fastening nut is fixedly connected with a tapered elastic sheet, a V-shaped notch is formed in the surface of the tapered elastic sheet, and the tapered elastic sheet is embedded in the V-shaped notch. The waterproof multi-rotor unmanned aerial vehicle motor has the waterproof function, is not prone to short circuit and burning, can weaken noise propagation, and has stable transmission, energy saving, safety and reliability.

The invention provides a preparation method of a tin-doped scaly nano gallium oxide thin film solar blind ultraviolet photoelectric detector. The preparation method comprises the following steps: carrying out cleaning pretreatment on a single crystal GaN substrate; depositing an Au thin film on the pretreated single crystal GaN substrate to serve as a catalyst layer; the preparation method comprises the following steps: mixing Ga2O3, diamond and SnO2 powder according to a certain mass ratio to prepare a precursor; putting the single crystal GaN substrate deposited with the Au thin film and a precursor into a CVD furnace, and growing according to preset gas flow, pressure intensity, reaction temperature and reaction time to obtain a tin-doped scaly nano gallium oxide thin film; and respectively preparing electrodes on the surface of the tin-doped scaly nano gallium oxide thin film and the surface of the GaN substrate by adopting a radio frequency magnetron sputtering method. The conductivity of the thin film is improved through tin doping, the specific surface area and light absorption are increased through the scaly nanostructure, high-performance deep ultraviolet photoelectric detection is achieved, and the technical problem that in the prior art, the dark current of a device is high is solved.

The utility model relates to a dirt recovery device, in particular to an oil-water separation device, which comprises a base, a first oil-water separator and a second oil-water separator, the separation baffle is arranged above the first cavity of the base, and a second cavity is formed in the side, away from the top face of the first cavity, of the separation baffle; the oil-water separation mechanism comprises a driving motor, a driving shaft, a roller and a scraping plate, the driving motor is fixed to the separation baffle, the output end of the driving motor is connected with the driving shaft, the driving shaft penetrates through the roller in the axial direction of the roller and is fixedly connected with the roller, the separation baffle is provided with an opening, and the roller is arranged at the opening; the first side of the scraping plate is attached to the generatrix of the roller, and the second side of the scraping plate is downwards inclined towards the direction of the second cavity; the outer wall of the roller is made of stainless steel. The roller can be directly connected through the driving shaft at the output end of the driving motor, the stability is good, and the effect is stable and the service life is long due to the fact that the roller is made of stainless steel skin materials.

The embodiment of the application provides a kind of data transmission system, it is related to wireless radio frequency communication technical field.System includes: gateway device, multiple imaging devices with gateway device wireless communication connection and multiple sensors with each imaging device wireless communication connection;Each imaging device and wireless communication connection sensor communicate by preset communication parameter;First device when determining that there is to-be-sent data, parameter switching request is sent to the second device of system, and to-be-sent data is sent to the second device by target communication parameter carried in parameter switching request;Target radio frequency is different from preset radio frequency, and target communication rate is higher than preset communication rate;Second device receives parameter switching request;Switch to target communication parameter by itself communication parameter, and receive to-be-sent data by target communication parameter.It can be seen above, application the scheme provided in embodiment of the application can improve the effect of data transmission in data transmission system.

The invention discloses a Type-C connector and a method for improving the transmission performance of a high-speed signal, a core body of the connector comprises a plastic seat, a first terminal group, a second terminal group and a middle spacer, the first terminal group and the second terminal group are respectively located at the upper side and the lower side of the middle spacer, and the first terminal group comprises an upper grounding terminal; the second terminal group comprises a lower grounding terminal; the upper surface of the middle spacer is provided with an upper guide connection part along the distribution path of the upper grounding terminals, and the lower surface of the middle spacer is provided with a lower guide connection part along the distribution path of the upper grounding terminals; the upper grounding terminal is in conductive connection with the middle spacer through contact with the upper conductive connection part; and the lower grounding terminal is in conductive connection with the middle spacer through contact with the lower conductive connection part. After the technical scheme is adopted, the grounding device is additionally arranged on the metal middle spacer of the Type-C product, so that the middle spacer is in contact with the ground wire of the high-speed terminal, oscillation generated in the signal transmission process is restrained, and the transmission performance of high-speed signals is improved.

The invention discloses a signal transmission method and device, a terminal, network side equipment and a medium, and belongs to the technical field of communication, and the signal transmission method comprises the steps that the terminal sends a first signal based on a first parameter; wherein the first signal corresponds to the first channel, and the first parameter is related to at least one of the following items: the type of the first channel, the resource allocation position of the first channel, the sending power of the first channel, the modulation order of the first channel, the waveform of the first channel, the PAPR of the first channel, the type of the first signal, the number of ports of the first signal, and the number of symbols of the first signal; a sequence of the first signal, a PAPR of the first signal.

The application belongs to the technical field of wireless communication, and is especially a pinch antenna system (PASS) assisted downlink communication resource allocation method and system. The method comprises the following steps: S101: constructing a system model; S102: establishing a double-time scale optimization problem with the goal of maximizing the long-term average system sum rate; S103: constructing a resource optimization framework; S104: performing transmission resource optimization according to the number of medium waveguides in the system; S105: constructing a sample average approximation target of the long-term average system sum rate based on multiple small-scale fading samples; and S106: updating the PA deployment position based on the long-term average performance index until the convergence condition is met or the maximum number of iterations is reached. The application can avoid frequent adjustment of the pinch antenna position, thereby effectively reducing the system implementation complexity and calculation overhead, significantly improving the long-term average sum rate and multi-user communication performance of the system, improving the transmission quality of users, and having good engineering application value.

This invention provides an anthracene-based fluorescent material, its preparation method, and its applications. The anthracene-based fluorescent material is as shown in Compound I. The compounds of this invention utilize the electron-donating effect of aromatic amine units such as carbazole and the electron-withdrawing effect of phosphonyl / sulfonyl groups, effectively improving the electron and hole transport capabilities of the molecules. Furthermore, the steric hindrance effect, resulting in a distorted molecular configuration, can suppress intermolecular interactions, thereby reducing the device efficiency roll-off caused by concentration quenching. The thermal exciton mechanism enables these molecules to achieve an exciton utilization rate exceeding that of traditional fluorescent molecules by 25%.

The invention relates to the field of optical communication, and provides a lithium niobate-based coherent transmit-receive integrated assembly, a coupling method and an optical module.The lithium niobate-based coherent transmit-receive integrated assembly comprises a modulator chip, an optical fiber array assembly and a detector chip, and the modulator chip is provided with a first array interface, a second array interface, a first test port and a second test port; the first test port is communicated with a first input sub-interface in the first array interface, and the second test port is communicated with a second input sub-interface in the first array interface; the first array interface is coupled with the optical fiber array assembly, and the second array interface is coupled with the detector chip; the first test port and the second test port are used for monitoring optical power to adjust the coupling efficiency between the modulator chip and the optical fiber array assembly, so that the position between the modulator chip and the optical fiber array assembly meets the requirement of the coupling efficiency, and the transmission performance of an optical path is improved.

This invention discloses a compound and its application, belonging to the field of display technology. The chemical structural formula of the compound is shown below: ; wherein, Ar1 and Ar2 are both; or, one of Ar1 and Ar2 is, and the other of Ar1 and Ar2 is a substituted or unsubstituted C6-C12 aryl, substituted or unsubstituted C3-C12 heteroaryl; Ar3 is a halogen, cyano, substituted or unsubstituted C6-C12 aryl, substituted or unsubstituted C3-C12 heteroaryl, substituted or unsubstituted C1-C60 alkyl or alkoxy; A is O, S or Se; L represents a single bond, a substituted or unsubstituted C6-C12 arylene, or a substituted or unsubstituted C3-C12 heteroarylene; Z1 to Z4 are each independently N or CR5. OLED devices prepared based on this compound have lower operating voltage, higher efficiency, and longer cycle life.

The invention discloses a remote sensing big data automatic processing method based on cloud computing, and relates to the field of remote sensing big data processing, and the remote sensing big data automatic processing method comprises the steps: (S1) collecting remote sensing data; (S2) uploading remote sensing data to a cloud computing platform; (S3) processing and analyzing the remote sensing data by adopting a cloud computing processing model; (S4) storing the remote sensing data compression package to a cloud computing platform, and debugging a data processing algorithm by adopting a container cloud integrated model; (S5) displaying and analyzing a processing result by adopting a data visualization platform; according to the invention, remote sensing big data automatic processing is realized based on cloud computing, and a low-orbit remote sensing constellation-oriented transmission routing task planning algorithm and a container cloud integrated model are fused at the same time, so that the efficiency and security of remote sensing big data automatic data processing and data transmission are improved.

This application provides an interface conversion device and method, relating to the field of interface conversion technology. The device includes an FPGA chip, an SDIO interface, and a D-PHY interface. The FPGA chip includes an SDIO protocol receiving module, a data processing module, and a D-PHY protocol transmitting module. The SDIO protocol receiving module receives and parses SDIO protocol data transmitted by the SDIO interface to obtain valid SDIO protocol data, which is then sent to the data processing module. The data processing module buffers and synchronizes the valid SDIO protocol data to eliminate the rate and clock domain differences between the SDIO interface and the D-PHY interface. The D-PHY protocol transmitting module encodes and encapsulates the processed data according to the D-PHY protocol to obtain D-PHY protocol data, which is then sent to the D-PHY interface. This device improves the transmission performance of SDIO to D-PHY interface conversion and reduces cost and size.

This invention provides a mode-division multiplexing (MDF) system, method, device, and storage medium, relating to the field of optical communication technology. The MDF system includes at least: multiple cascaded optical fiber transmission units across multiple spans and a central controller. Each optical fiber transmission unit includes multimode or few-mode fiber and a mode adjustment unit. The mode adjustment unit calculates the transmission parameters of the optical fiber transmission unit and sends these parameters to the central controller. The central controller acquires the transmission parameters of the optical fiber transmission units in each span, generates a target mode round-robin strategy for the corresponding span, and sends it to the mode adjustment unit to update the optical signal module. The central controller adaptively selects the target mode round-robin strategy based on the real-time transmission environment, adaptively adjusting each span to reduce differential mode group delay (DMD) and mode-dependent loss (MDL), adapting to different span lengths and different transmission environments, and improving the transmission performance of multimode or few-mode fiber.

The invention belongs to the technical field of materials and advanced oxidation, and particularly relates to a phenanthroline-containing pyrenyl 2D covalent organic framework material as well as a preparation method and application thereof, and the covalent organic framework material is synthesized by taking 1, 3, 6, 8-tetra-(p-aminophenyl)-pyrene and 4, 4 '-(1, 10-phenanthroline-3, 8-diyl) dibenzaldehyde as precursors through Schiff base condensation reaction. According to the COFs material synthesized by the invention, on the basis of containing phenanthroline, by increasing benzene rings, regulation and control on covalent organic framework electron delocalization on the molecular level are realized, so that the capability of activating PMS to degrade organic pollutants is enhanced, and the COFs material is suitable for not only the organic pollutant bisphenol A, but also the organic pollutant PMS. The COFs prepared by the method also has an excellent degradation effect on other organic pollutants such as sulfadiazine and atrazine, and in addition, the COFs also has good cycle stability and does not generate secondary pollution.

The application discloses a kind of multispectral nanocluster doped multiple coating light concentrator and its method, including preparation substrate layer, preparation light emitting layer and preparation anti-reflection function layer, multispectral nanocluster doped light emitting layer is coated on substrate layer, anti-reflection function layer is coated on light emitting layer, the multispectral nanocluster is using Eu 3+ 、Tb 3+ 、Ce 3+ Ion or any combination thereof induced nanocluster of agglomerated polymer formation, the light emitting layer is obtained using multispectral nanocluster doped resin, for the absorption of incident short-wave light and conversion into characteristic emission light;The anti-reflection function layer is coupled to the outermost layer of light emitting coating, for limiting the light quantum conduction in coating, using different refractive index coating to limit the light quantum conduction in coating, to lock the fluorescent light quantum escape emitted by inner layer light emitting material, while, also can play the role of reducing interface reflection loss and improving the injection efficiency of incident light to light emitting layer.

The invention provides a capillary tube array structure, a lithium ion battery and an electrolyte conduction method of the lithium ion battery. The capillary tube array structure is a hollow cylinder; the capillary tube array structure comprises a plurality of capillary tube units which are annularly distributed around the axis of the column body; each capillary unit comprises at least three capillary tubes with different inner diameters, and the inner wall of each capillary tube is subjected to lyophilic modification treatment. According to the capillary tube array structure, the lithium ion battery and the electrolyte conduction method of the lithium ion battery, disclosed by the invention, through cooperative cooperation of at least three capillary tubes with different inner diameters in each capillary tube unit, relatively high transmission of the electrolyte is realized, high-efficiency diffusion after transmission is also ensured, and the pain point of insufficient infiltration of the electrolyte at the top of a high-height battery is solved; the capillary tube array structure applied to the middle of the roll core also has a certain supporting effect, and collapse of a core layer in the middle of the roll core due to the expansion effect in the charge-discharge cycle process of the battery cell can be prevented.

The application discloses an inorganic composite solid electrolyte and a preparation method thereof, and relates to the technical field of lithium batteries, and specifically discloses an inorganic composite solid electrolyte and a preparation method thereof. The preparation method of the inorganic composite solid electrolyte comprises the following steps: S1, mixing lithium salt, metal oxide A, metal oxide B and ammonium dihydrogen phosphate, wherein the metal oxide B is titanium oxide, and intermittent vibration ball milling is performed to obtain mixed powder; S2, adding lanthanum oxide and germanium oxide into the mixed powder obtained in the step S1, and continuing to perform intermittent vibration ball milling to obtain composite powder; and S3, performing low-temperature sintering on the composite powder obtained in the step S2, and pressing to obtain an inorganic composite solid electrolyte film layer. The preparation method can significantly improve the reaction activity and synergistic effect among raw materials by adopting two-step intermittent vibration ball milling and one-step low-temperature sintering, and the conductivity of the inorganic composite solid electrolyte and the lithium ion transmission performance and cycle life of the solid battery are improved, and meanwhile, no solvent is used in the preparation process, and the sintering cost is reduced.

The present application relates to the technical field of composite materials, in particular to a metal hydroxide organic framework composite membrane and a preparation method and application thereof, wherein nickel chloride hexahydrate, terephthalic acid, N, N-dimethylformamide, anhydrous ethanol and deionized water are mixed and dissolved, then poured into a reaction kettle, an AAO membrane with a pore size of 160-200 nm is placed in a mold to make the membrane contact the reaction solution on one side, and the mold is placed in the reaction kettle, and the AAO membrane after reaction in the mold is taken out as the composite membrane. Since the surface of the composite membrane is negatively charged, the composite membrane has good cation selectivity; the MHOF layer with a nanoscale window cavity pore structure can be used as an ion filter and a conductor for enhancing ion selectivity, the passage of ions through the MHOF pore channel can improve the flux of the ions, and the highly ordered AAO nanochannel is an ion storage layer and has the effect of improving ion transmission. The maximum output power density of the composite membrane is higher than that of a commercial application benchmark, and the composite membrane can be applied in salt differential power generation.

This application relates to the field of solar cells, and particularly to a solar cell and photovoltaic module. The solar cell includes: a substrate; a tunneling dielectric layer and a doped conductive layer located on the surface of the substrate, the tunneling dielectric layer being located between the doped conductive layer and the substrate, the doped conductive layer containing a dopant element, the dopant element being N-type or P-type, the doped conductive layer having a plurality of spaced-apart first heavily doped regions extending along a first direction, the doping concentration in the first heavily doped regions being greater than the doping concentration in the doped conductive layer excluding the first heavily doped regions; a passivation layer located on the surface of the doped conductive layer away from the substrate; and a plurality of spaced-apart electrodes extending along a second direction, the electrodes penetrating the passivation layer and contacting the doped conductive layer, with at least two first heavily doped regions contacting the same electrode. This application embodiment is beneficial for improving the photoelectric conversion efficiency of passivated contact solar cells.

This invention relates to the field of organic optoelectronic material preparation technology, specifically to a boron-nitrogen compound, an organic electroluminescent device containing the same, and its applications. The boron-nitrogen compound provided by this invention introduces a benzene ring into the donor unit to increase the conjugation length of the donor backbone. This, on the one hand, modulates the HOMO energy level of the luminescent molecules, which is beneficial for hole transport between the hole transport layer (or electron blocking layer) and the luminescent layer; on the other hand, it enhances the carrier transport performance between host and guest molecules. Simultaneously, the introduction of sterically hindered spirocyclic rings and substituted spirocyclic groups effectively suppresses the aggregation quenching effect between luminescent molecules and inhibits non-radiative transitions. Using the boron-nitrogen compound of this invention as the luminescent layer material to fabricate an organic electroluminescent device can significantly improve the device's current efficiency while also achieving a substantial increase in device lifetime, thus possessing greater application value.

The application discloses a method and device used in a node for wireless communication. A first receiver receives first information, second information and first signaling, the first signaling is used to indicate a first time domain resource pool set, the first time domain resource pool set includes multiple time domain resource pools; the first receiver receives a first PDSCH group, the first PDSCH group includes at least one PDSCH; a first transmitter transmits a first PUCCH at a first transmission power, the first PUCCH carries at least one HARQ-ACK bit; wherein at least one time domain resource pool in the first time domain resource pool set constitutes a feature time domain resource pool subset, the first information is used to determine the feature time domain resource pool subset from the first time domain resource pool set; the time domain resource pools included in the feature time domain resource pool subset respectively include time domain resources occupied by the PDSCHs in the first PDSCH group.

The application discloses an IP bridging method and system based on star flash SLE, belongs to the technical field of short-distance wireless communication and Internet of Things, and aims at the problems of complex multi-connection management, high deployment cost of heterogeneous network intercommunication of the existing low-power wireless IP scheme.The center device is configured as an access point role, the mapping relationship between terminal MAC addresses and connection identifiers is maintained through a connection management list, a unique SLE virtual network interface is created in an IP protocol stack, bidirectional data forwarding of a single interface to multiple SLE connections is realized, a data link layer bridging channel of SLE and WiFi can be further established, and two-layer transparent forwarding is realized.The application can simplify multi-device access management logic, reduce networking complexity, and improve the efficiency and compatibility of low-power terminal IP access.

The application belongs to the technical field of photocatalytic nano antibacterial materials, and discloses a preparation method and application of artemisia carbon dot modified crystalline carbon nitride material. The material is composed of A-CDs and CCN, A-CDs retains the biological activity functional groups of artemisia and is uniformly modified in the interlayer of CCN. The preparation method comprises the following steps: preparing CCN solid and A-CDs powder respectively, then dispersing the two in deionized water, adjusting pH, and then performing ultrasonic dispersion, drying, grinding and staged calcination treatment, so as to obtain A-CDs@CCN material. The application improves the charge separation efficiency by embedding A-CDs in the interlayer of CCN, realizes the synergistic antibacterial effect of A-CDs and CCN, has high inhibition activity on staphylococcus aureus and escherichia coli, and is not easy to induce drug resistance. The preparation process is simple, the raw material cost is low, the obtained material is uniform in composition and stable in structure, and can be used in the field of antibacterial.

The invention provides a signal transmission circuit board and a preparation method thereof. The signal transmission circuit board comprises an inner-layer substrate and an outer-layer substrate. The inner substrate comprises a transmission line layer, an insulation protection layer, a radio frequency converter and two dielectric layers which are oppositely arranged. The transmission line layer is located between the two dielectric layers and is embedded in the insulation protection layer. The radio frequency converter is located on at least one side of the transmission line layer along the extension direction of the dielectric layer. The transmission line layer is arranged on the neutral layer to reduce stress, the surface of the transmission line layer is coated with the insulation protection layer to protect the transmission line layer, and at least one side of the transmission line layer is provided with the radio frequency converter. When the signal transmission circuit board is bent, the radio frequency converter can convert an electromagnetic signal from the inner transmission line layer to the outermost second line layer for transmission, so that the problem of transmission performance reduction caused by excessive impedance change of the transmission line layer can be avoided, and the overall transmission performance of the signal transmission circuit board is improved.

A substrate connector includes inner terminals, an inner housing, outer terminals, an outer housing, and a fixing member. The outer terminals include a barrel portion and a connecting portion electrically connected to a circuit substrate. The connecting portion is connected to the barrel portion via a step portion, and is disposed at a radially outer side of the barrel portion. The outer housing includes a rotation preventing portion that suppresses rotation of the outer terminals by abutting against the connecting portion of the outer terminals.

The application relates to a kind of graphite-like capacitor carbon and its preparation method and application, relate to carbon material technical field, solve the problem that the needle coke-based capacitor carbon in the activation pore-forming process of prior art is difficult to consider high specific surface area, layered ordered graphite structure keeps, pore size structure uniform control and continuous electric conduction network, leading to the specific capacitance, rate performance and cycle stability of material are limited.The application is by mixing needle coke powder and chemical activator, first activation is carried out by heating, and the activated product is obtained, and the intermediate product A is obtained by post-processing;Intermediate product A is mixed with catalytic activator, second activation is carried out by heating, and catalytic graphitization product is obtained, and the intermediate product B is obtained by post-processing;The intermediate product B is calcined to obtain graphite-like capacitor carbon by refining treatment.The graphite-like capacitor carbon provided by the application can be applied to the preparation of supercapacitors, and the synergistic balance between high specific surface area, high packing density, excellent conductivity and structural stability is realized.