107results about How to "Meet the practical application" patented technology

The invention discloses an internet of things security access gateway. A three component framework of 2+1 is adopted in a hardware layer of the gateway. The three component framework comprises an outer host machine, an isolation exchange component and an inner host machine. A filed programmable gate array (FPGA) card based on hardware serves as the isolation exchange component so that isolation of a network and safe and rapid exchange of data are achieved. Device certification, access control, protocol analysis, data security check, data ferry service and audit service are achieved through software layers on the inner host machine and the outer host machine and action of the services can be traced. The internet of things security access gateway has the advantages that relative requirements that data collected by an internet of things perception terminal is introduced to a core network safely are satisfied, network attack, Trojan horse virus transmission and denial of service attack are prevented from being launched through a sensing layer network with weak safety protection to the core network, safe exchange of data is achieved under the condition that the sensing network and the core network are in network isolation, and practical application of the internet of things is achieved under the condition that safety is guaranteed.

The invention relates to a method for preparing a Cf/ZrC-SiC superhigh-temperature ceramic composite material through a hot-pressing sintering/precursor cracking process, and concretely relates to an in-situ preparation method for the Cf/ZrC-SiC superhigh-temperature ceramic composite material by combining a precursor cracking process and a hot-pressing sintering process. The method comprises: introducing ZrSi2 powder into carbon fiber fabric, employing the hot-pressing sintering process for in-situ generation of ZrC and SiC ceramic base bodies, and employing the precursor cracking process to perform final densification processing, so as to obtain the compact Cf/ZrC-Si superhigh-temperature ceramic composite material. The superhigh-temperature ceramic composite material prepared by employing the preparation method has excellent superhigh temperature usage performance, and the method is simple in process and short in time consumption. The obtained Cf/ZrC-SiC superhigh-temperature ceramic composite material can basically satisfy practical application of some heatproof structural members, and has wide application prospect in extreme environments such as super hypersonic speed flight, aerosphere reentry, trans-atmospheric flight, rocket propulsion system and the like.

The invention discloses a method for preparing core-reinforced multi-core MgB2 superconducting wires/strips, which comprises the following steps of: 1, preparing primary composite single-core wires; 2, removing oil stains on the surfaces of the primary composite single-core wires; 3, preparing secondary multi-core composite rods through secondary composite assembly; 4, performing drawing to obtain the core-reinforced multi-core MgB2 superconducting wires; and 5, rolling by using a plain-barrel roller to obtain the core-reinforced multi-core MgB2 superconducting strips. By the method, the kilometer-magnitude core-reinforced multi-core MgB2 superconducting wires/strips of which the strength is enhanced obviously and which have different cross section structures can be prepared, the phenomena of nonuniform and asymmetric distribution of superconducting core wires and the like can be avoided, the practical kilometer-magnitude multi-core MgB2 superconducting wires/strips of which the superconducting core wires and obstruction layers, the core wires and the core wires and wrapping sleeves are tightly bonded and the core wires are uniformly distributed can be prepared, and the requirement of practical application in aspects of superconducting magnets, particularly superconducting nuclear magnetic resonance instruments and the like can be met.

The invention discloses a partial discharge diagnosis method based on naive bayesian classification. The method includes the steps that data acquisition is performed, and then, acquired signals are subjected to anti-interference processing; the processed signals are converted into a two-dimensional data group; a PRPD map, an N-P map and a Q-P map are respectively obtained according to a PRPS map; feature extraction is performed on the PRPD map, the N-P map and the Q-P map respectively; an equal-width discretization method or an equal-frequency discretization method is used for performing discretization on data having been subjected to feature extraction; a partial discharge fault category is obtained through naive bayesian classification. The method has the advantages that the correction rate is 80.5%, and the on-site actual application requirement can be met. Meanwhile, the equal-width non-supervision discretization method and the equal-frequency non-supervision discretization method are researched in detail, it shows that the equal-frequency discretization method is superior to the equal-width discretization method, and the optimal empirical value of the equal-frequency discretization method is given.

This invention tracking arc-extinction compensation and select-switching device comprises: Z type grounding transformer connected to bus-bar, which neutral point being connected to one end of arc-extinction coil L1 by a single phase isolation switch, other end of L1 is grounding, said neutral point being connected to lightning protector and a single phase voltage inductance, the secondary wniding, by two ends, being paralleling respectively (1). compensated reactor branching which being composed of a compensated reactor and a silicon cotnrol series connected; (2). buffer resistance branching which being composed of series connected a buffer resistance and a silicon control, zero sequence current mutual inductor CT1-CT48 feedthrough connected to various out line of the sstem. The sampling signals and control signals is connected to controlling device. Advantages are: reliability, no need of filter.

The invention discloses a photoelectric mixed connector. The photoelectric mixed connector comprises a plug and a socket, wherein the plug comprises a plug shell, a connecting sleeve, a nut, a plug installation plate, a baffle, a plurality of high-voltage plug pin components, at least one optical fibre plug hole component and a plurality of low-voltage plug hole components; the socket comprises a socket shell, an encapsulation sleeve, a socket installation plate, a plurality of high-voltage plug hole components, at least one optical fibre plug pin component and a plurality of low-voltage plug pin components; a second installation hole is positioned in the central area of the plug installation plate; a first installation hole and a third installation hole are close to the outer edge of the plug installation plate and are respectively positioned on the two sides of the second installation hole; an eighth installation hole is positioned in the central area of the socket installation plate; and a seventh installation hole and a ninth installation hole are close to the outer edge of the socket installation plate and are respectively positioned on the two sides of the eighth installation hole. By the connector, the high-voltage components, the low-voltage components and the optical cable components also can be organically combined together on the premise that installation space is smaller; and the actual application under related conditions is met.

The invention discloses a plasma sterilization device for a flexible discharge electrode structure. The plasma sterilization device comprises a power system with a high voltage output circuit, a high voltage electrode connected with a high voltage end of the high voltage output circuit and a grounding electrode, wherein the high voltage electrode and the grounding electrode are in direct contact by mutually twisting spirally, at least one of the high voltage electrode and the grounding electrode is of a flexible structure, and at least one of the high voltage electrode and the grounding electrode comprises an insulating medium; the grounding electrode having the flexible structure is made of a carbon fiber material which has a high smelting point and relatively good conductive property; after the power system is power on, surface discharge is generated in a contact area of the two electrodes to generate a lot of low temperature plasma; and the high voltage electrode and the grounding electrode which are mutually twisted and are in direct contact can sterilize a treated object in a direct contact mode.

The invention discloses a digital intermediate frequency receiver. The digital intermediate frequency receiver comprises a multichannel analog to digital converter (ADC) module, a multichannel bridge connection module, a multichannel digital down-conversion application specific integrated circuit (ASIC) module, a multichannel field programmable gata array (FPGA) processing module, a multichannel digital signal processor (DSP) processing module, a multi-interface output module and a DSP general control module. A data output of the multichannel ADC module is connected with a data input of the multichannel bridge connection module, a data output of the multichannel bridge connection module is connected with a data input of the multichannel digital down-conversion ASIC module, and a data output of the multichannel digital down-conversion ASIC module is connected with a data input of the multichannel FPGA processing module. The multichannel FPGA processing module is connected with the multichannel DSP processing module by bothway multichannel data. The data output of the multichannel DSP processing module outputs the final result by the multi-interface output module. The universal type digital intermediate frequency receiver is good in generality, high in processing efficiency, low in cost, and beneficial to industrialization.

The invention discloses a super-thick low alloy high strength Q345C steel plate which comprises the following chemical components by mass (unit: wt %): C 0.08 to 0.18, Si 0.20 to 0.40, Mn 1.15 to 1. 50, P <=0.018, S <=0.005, micro-alloying elements of (Nb+Ni+Cr) <=0.020 and Als <= 0.040, with the rest being Fe and residual elements. Carbon equivalent satisfies the following equation: [Ceq=C+Mn/5+(Cr+Mo+V)/5+(Ni+Cu)/15]<=0.43. According to the invention, total grade level of a variety of impurities is enabled not to exceed 2.5 by carrying out a series of processes of converter smelting, LF refining, vacuum refining, casting, heating, rolling, controlled cooling, slow cooling and heat treatment, designing the chemical composition of multielement composite micro-alloy elements and guaranteeing the cleanliness of steel by using the technology of LF+VD, and the grain size of steel is enabled to reach grade 8.0-10.0 through the processing of controlled rolling, controlled cooling and normalization; effective implementation of above-mentioned measures enables the super-thick low alloy high strength Q345C steel plate to be successfully manufactured.

The invention discloses low temperature resistant non-transparent high-impact random copolymerization polycarbonate, a preparation method and an application thereof. The random copolymerization polycarbonate is composed of a polycarbonate embedded section and a polysiloxane embedded section. The random copolymerization polycarbonate disclosed by the invention has excellent comprehensive property, excellent low temperature resistance and mechanical property, especially, high shock strength, better low-temperature shock strength, excellent processing property and practical application value.

The invention belongs to the technical field of water treatment and particularly relates to a Fe3O4/CeO2 nanometer composite material, a preparation method and application. The composite material is prepared through a coprecipitation method. The surface of CeO2 is wrapped by nanometer Fe3O4 particles in the composite material. The Fe3O4/CeO2 nanometer composite material can serve as peroxide mimic enzyme to be applied to treating p-nitrophenol waste water. The invention provides the preparation method of the new Fe3O4/CeO2 nanometer composite material. The preparation method is high in operability and can well meet requirements of large-scale production and actual application. With the Fe3O4/CeO2 nanometer composite material prepared through the new method as a base, the inventor performs new application research, when the Fe3O4/CeO2 nanometer composite material is applied to treating p-nitrophenol wastewater, a good application effect is shown, the p-nitrophenol degrading rate can be well kept at 90% or above, and application prospects are good.

The invention discloses a particle swarm optimization and support vector machine based soft-measurement method of effluent-volatile fatty acid of an anaerobic wastewater treatment system. In order to improve precision and robustness of a model, the particle swarm optimization and a support vector machine are combined in the measurement method. The problem about long retardation tine of measurement equipment is solved through the soft-measurement method, effluent quality of wastewater is truly and comprehensively monitored in real time, and accidental contaminations are prevented; meanwhile, the soft-measurement method can be used for feedback control to achieve optimal control on the anaerobic wastewater treatment system, guidance is provided for monitoring, optimizing and understanding the anaerobic digestion process, some expensive measurement equipment can be substituted, maintenance cost is saved, wastewater treatment cost is lowered, and the soft-measurement method is easy to promote and apply in wastewater treatment engineering and is good in social and economical benefits.

The invention provides a method and a device for transmitting audio data, wherein, the method enables an audio device to conduct the audio transmission by utilizing a pre-applied cache, and the cache is divided into at least two spaces. The method comprises a data prewriting step, a data writing step and a data reading step, wherein, during data pre-writing step, the audio data coming from a source device is prewritten into the cache; during the data writing step, the residual audio data is written in to a first free space of the two spaces; during the data reading step, the written data is read from a second space according to the written sequence of the audio data, and sent to a target device. In the invention, only one cache is applied and divided into a plurality of spaces, so that the flexibility of data processing is enhanced; and an FIFO memory which is originally arranged on an SRAM of an external device is arranged in a DMA, so that the SRAM of an internal chip of the external device is saved.

The invention provides a material for an RFID (Radio Frequency Identification) antenna conductive pattern. The material for the RFID antenna conductive pattern has the following specific characteristics that the material is metal nano-particles which are of core-shell structures, wherein the inner cores are Cu particles of about 50 nm, and an Ag layer coats the surfaces of Cu through a composite method of displacement and chemical deposition; Cu@Ag nano-particles, absolute ethyl alcohol and deionized water are mixed to prepare conductive printing ink with the solid content of about 70 percent;the material is obtained through metal stencil printing and sintering. Antenna patterns with different thicknesses can be manufactured by the material by adopting metal stencil printing so as to meetdifferent impedance requirements of antennae of various frequency bands. The Cu@Ag nano-particles have the characteristics of low impedance, high conductivity, controllable Ag layer thickness and thelike; compared with Cu conductive printing ink, the Cu@Ag nano-particles have high oxidation resistance; compared with pure Ag or Au conductive printing ink, the cost is greatly reduced; optimal sintering performance can be realized by controlling the thickness of the Ag layer; moreover, a preparation process of the material is simple and convenient; a printing ink solvent is environment-friendlyand renewable, and has a very great application prospect in the field of conductive printing ink for the RFID antenna.

The invention discloses a Cu-base alloy baseband for a coated conductor and a preparation method thereof, which belong to the technical field of metal baseband of high-temperature superconducting coated conductors. The alloy baseband comprises the following components in atomic percentage: 48 to 68 percent of Cu, 30 to 50 percent of Ni, and 0.3 to 3 percent of W. The preparation method adopts powder metallurgy and comprises the following steps of: (1) mixing initial powder and filling a die; (2) pressing and sintering an alloy pressed green compact; (3) performing thermom echanical rolling on an initial blank ingot; and (4) performing recrystallization and heat treatment on a cold rolling baseband. The alloy baseband has the characteristics of no magnetism, high oxidation resistance, high electric conductivity, high cubic texture and the like.

The invention belongs to the technical field of the structure or shape of an activation medium, and discloses a wavelength-tunable graphene oxide mode-locked all-fiber thulium-doped laser. A pump source inputs a single-mode fiber through a beam combiner by pumping, the thulium-doped single-mode double-clad fiber is fused with the single-mode fiber, one end of the multimode interference filter is fused with the thulium-doped single-mode double-clad fiber, and the other end is fixed on a precision translation table. FC/APC fuse is fused with multimode interference filter, polarization-independent isolator is fused with FC/APC fusing, polarization-independent isolator is fused with output coupler, output end of coupler is fused with collimator with 1.5 m tail fiber and polarization controller, polarization controller is fused with beam combiner. Graphene oxide is a new material with excellent properties and low cost. The tenability of 2 [mu]m output band in all-fiber fiber laser is realized, the advantages of simple structure, convenient operation and high stability are achieved, and more practical application can be met.

The invention provides a method for preparing a cobaltous oxide/graphene nanometer composite material, which comprises the steps of performing ultrasonic processing on graphite oxide in deionized water for obtaining graphene oxide solution, dissolving Co(NO3)2.6H2O into the deionized water for obtaining cobaltous nitrate solution, then dripping NH3.H2O, dispersing a generated solid product in the deionized water for preparing cobalt hydroxide colloidal solution; mixing the cobaltous nitrate solution with the cobalt hydroxide colloidal solution, performing washing and drying; and processing at the temperature of 150-500 DEG C for obtaining the cobaltous oxide/graphene nanometer composite material. The method for preparing the cobaltous oxide/graphene nanometer composite material has advantages of simple operation, high speed, large-scale production, and environment-friendly effect.

This invention relates to a method and a system for mobile station location based on a special short message, and use of the same. A system for mobile station location based on a special short message, where the system, based on a mobile communication network, is characterized by that this system includes plural radio communication terminals, a mobile station to be located and a locating system that includes a locating processing module, a special short message sending module and a data analyzing module, where a mobile station sends locating request information to the locating processing module which processes the requests and sends a special short message to the mobile station and the radio communication terminals around the same by use of the special short message sending module; the mobile station and the radio commutation terminals transmits a measurement report that each base station reaches signal strength to a network side that transfer these measurement reports to the data analyzing module for analysis and compare, so as to compute a relative position of the mobile station and each radio communication terminal. The invention is advanced with high precision of locating, with low cost, which is convenient for promotion.

The invention discloses in-situ hydrophobic modified aramid nano aerogel fiber as well as a preparation method and application thereof. The preparation method comprises the following steps of providing an aramid nano spinning solution; preparing hydrophobic modified aramid nano gel fiber by adopting a spinning technology, wherein a coagulating bath adopted by the spinning technology comprises a first organic solvent and a halogenating reagent, and the halogenating reagent comprises monobromoalkane, monochloroalkane, dibromoalkane, dichloroalkane, trichloroalkane and the like; and then carrying out drying treatment to obtain the in-situ hydrophobic modified aramid nano aerogel fiber. The in-situ hydrophobic modified aramid nano aerogel fiber prepared by the method has a unique three-dimensional porous network structure, lower heat conductivity, higher porosity, higher tensile strength and elongation at break and certain spinnability and structural stability, and can be applied to the field of spinning; a fabric woven from the hydrophobic fiber has self-cleaning ability; hydrophobic aramid nano aerogel fiber flocculus can also be prepared; and good hydrophobic performance is showed.

The invention discloses a polysiloxane with a side chain containing vinyl and quaternary ammonium salt and a synthesis method of the polysiloxane. The polysiloxane with the side chain containing the vinyl and the quaternary ammonium salt is prepared by carrying out quaternization reaction on a halohydrocarbylalkoxysilane monomer and a tertiary amine compound to obtain a quaternary ammonium salt-containing alkoxysilane monomer; and then carrying out equilibrium polymerization on the quaternary ammonium salt-containing alkoxysilane monomer, vinyl alkoxysilane monomer and hydroxyl-terminated polydimethylsiloxane. The invention also discloses application of the polysiloxane with the side chain containing the vinyl and the quaternary ammonium salt as raw rubber to prepare antibacterial siliconerubber through hydrosilylation reaction, quaternary ammonium salt antibacterial group is introduced into the molecular structure of the raw rubber of the silicone rubber, so that an antibacterial agent is uniformly distributed in a matrix, and the obtained silicone rubber is durable in antibacterial property and high in safety. A new field is developed for the application of the organosilicon polymer quaternary ammonium salt, and a brand-new idea is provided for a new preparation technology of antibacterial materials.

The invention discloses a CT image reconstruction method and system. The method comprises the following steps: reconstructing initial cone beam projection data obtained by circular scanning through animage reconstruction technology to obtain an initial image; performing nonlinear processing on the initial image to obtain a corrected image; performing numerical simulation on the corrected image togenerate corrected cone beam projection data; calculating the corrected cone beam projection data and the initial cone beam projection data to obtain differential projection data; processing the difference projection data through an image reconstruction technology to obtain a difference image; and fusing the difference image and the corrected image to obtain a final image. Only projection simulation and nonlinear transformation are added on the basis of an existing reconstruction technology, simple and small calculated amount is achieved in the artifact image reconstruction process, comparedwith an iterative algorithm, the method is simpler, meanwhile, a good image reconstruction effect can be achieved, clinical practical application is met, and universality is achieved.

The invention provides a device and method for testing lateral pressure of a support of a foundation pit during stratified excavation and non-uniform displacement. The device comprises a spliced barrier wall, loading bolts, loading corners, micro soil pressure sensors, a rubber thin film and a model box, wherein the spliced barrier wall and the loading bolts are arranged on one side wall of the model box; the spliced barrier wall is located on the inner side of the side wall and parallel to the side wall; a plurality of longitudinal reinforcing ribs and transverse reinforcing ribs are arranged on the outer side of the side wall; the spliced barrier wall is formed by splicing a plurality of equal-height wall pieces; the micro soil pressure sensors are arranged on all the wall pieces; the rubber thin film covers and is adhered to the wall pieces; one end of each of the multiple loading bolts penetrates through the side wall from the outside of the model box to splice all the wall pieces of the barrier wall; the loading bolts can be twisted. The device can simulate the lateral pressure of a support structure in a stratified excavation process of the foundation pit to provide a basis for engineering design and supporting; a distribution rule of the lateral pressure of the support structure during non-uniform displacement and a ruler that the lateral pressure changes with the displacement can be researched.

The invention relates to a remote commanding system, including: broadcast hosts, microphones and monitors at the center-side; and amplifiers, speakers, microphones, image acquisition devices and detectors at remote end. The broadcast host includes an MCU center processor, a multi-signal input and output processing unit, a channel controller, an input interface, a channel interface and/or a USB interface. The amplifier includes an interface recognizing and squelching unit, and a low-frequency suppression unit below 100Hz. The optical transmitter and receiver includes a digital signal processor, an interface identifier, a D/A converter and an A/D converter, a pre-amplifier, an optical drive and optical interfaces. The inventive remote commanding system has advantages of: easy expansion of the number of the remote terminals which are composed by optical fiber transmission and flexible matching outdoor type amplifiers; capability of optionally selecting the remote region and monitoring and returning back to the remote; reliable signal transmission; easy operation; and dependable guarantee to the remote command.

The invention relates to the intelligent electronic field and particularly relates to a voice noise reduction method and intelligent electronic equipment. The method comprises steps that S100, multiple frequency band scopes are preset, and a noise elimination signal corresponding to each frequency band scope is set; step 200, an audio signal is received, and a frequency band of the audio signal is acquired; step 300, at least one frequency band scope corresponding to the frequency band is selected, and noise elimination signals in the frequency band scope are merged with the audio signal; and S400, noise elimination processing is carried out after merging, and an audio signal after noise elimination is outputted. The method is advantaged in that through setting multiple different frequency bands, multi-frequency band noise elimination for noise is carried out, and the noise elimination effect is better, actual application is satisfied, and client experience is improved.