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30results about How to "Improve key performance" patented technology
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Composite comprising organic fibers having a low twist multiplier and improved compressive modulus
InactiveUS6851463B1High modulusReduce tire weightSynthetic resin layered productsTyresGramMetallurgy
The present invention provides an improved fiber-reinforced article comprised of at least two plies. Each of the plies comprises (a) rubber and (b) cord made from melt-spinnable, non-metallic, multifilament fibers for which the cord has a twist multiplier of less than or equal to about 375, a stress at 1% strain greater than or equal to about 1.7 grams / denier, and an initial compressive modulus greater than or equal to about 7 grams / denier, and the at least two plies have a fiber orientation angle of greater than or equal to about 23°. The composite is useful as a tire belt in a passenger tire.
Owner:PERFORMANCE FIBERS +1
All-purpose lubricating oil for motor and gear case of mini-tiller
InactiveCN103695136AAchieve universalImprove key performanceLubricant compositionMooney viscosityDimethyl siloxane
The invention relates to all-purpose lubricating oil for a motor and a gear case of a mini-tiller. The all-purpose lubricating oil comprises the following components by mass percent: 89.0-93.6% of base oil and a plurality of additives, wherein the kinematic viscosity of the base oil at 100 DEG C is 15-17mm<2> / s; the first additive is 1.0-2.0% of synthetic calcium sulfonate with high base number; the second additive is 2.0-3.0% of sulfurized calcium alkyl phenol with high base number; the third additive is 1.0-2.0% of polyisobutene bissuccinimide; the fourth additive is 1.0-2.0% of sulfurphosphorousbutyloctyl zinc salt; the fifth additive is 1.0-1.5% of amino monothioester; the sixth additive is 0.2-1.0% of terpolymer of ethylene, propylene and non-conjugated alkadiene, wherein the mooney viscosity (ML(1+4) 100 DEG C) of the sixth additive is 25-35; the seventh additive is 0.0001-0.0002% of polydimethylsiloxane. The invention also relates to a preparation method of the lubricating oil. The all-purpose lubricating oil can be used as the lubricating oil for a gasoline engine and a gear case of a mini-tiller, and also can be used as the lubricating oil for a diesel engine and the gear case of the mini-tiller.
Owner:LOGISTICAL ENGINEERING UNIVERSITY OF PLA +1
Method and tester for testing dynamic adhesive retention force of rubber and steel wire
ActiveCN104297150AImprove key performanceIncrease added valueUsing mechanical meansMaterial analysisAdhesiveControl system
The invention relates to a method and a tester for testing a dynamic adhesive retention force of rubber and a steel wire. The testing method comprises the following steps: applying a dynamic force to a vulcanized sample of the rubber and the steel wire by virtue of a wave-type mould, and then measuring a residual adhesive drawing force of the rubber and the steel wire so as to represent the magnitude of the adhesive retention force of the rubber and the steel wire under a dynamic condition. The tester comprises a mainframe, a drive system, a measurement control system and a safety protection device. The wave-type mould is used for applying the dynamic force to the vulcanized preparation sample of the rubber and the steel wire.
Owner:EVE RUBBER RES INST
Calibration method of X-ray generator tube current
ActiveCN107049347AImprove output accuracyReduce exposureRadiation generation arrangementsX-ray generatorPower flow
The invention discloses a calibration method of X-ray generator tube current. The method comprises the following steps of dividing an initial characteristic curve of pipe current-filament current into N sections, using a straight line to connect two end points of each section of the curve, and calculating an equation (Yn=knx+b) of each section of the straight line, wherein kn represents the slope of the nth section of the straight line, n=1,...,N, b is a constant, x is a pipe current value, and Yn is a voltage value of the filament current; collecting the pipe current value of the two end points of each section of the straight line and the corresponding voltage value of the filament current, comparing the collected data with data of the initial characteristic curve, wherein if an error is smaller than an error threshold value, then the equation of the section of the straight line is constant, and if the error is larger than the error threshold value, the collected data is utilized to renew the equation of the section of the straight line; using the equation of the straight line to calibrate the initial characteristic curve, selecting a corresponding equation of the straight line according to the pipe current value which needs to be utilized, and using the equation of the straight line to calculate the corresponding voltage value of the filament current. Through the calibration method of the X-ray generator tube current, calibration can be conducted on the pipe current of a ball pipe, and thus precise output of the pipe current is achieved.
Owner:ZHUHAI HOKAI MEDICAL INSTR
Method for preparing tungsten-doped porous vanadium dioxide powder and thin film by virtue of cotton sacrifice template method
InactiveCN108946809AEasy to makeSimple ingredientsMaterial nanotechnologyVanadium oxidesPorosityVanadium dioxide
The invention relates to a method for preparing tungsten-doped porous vanadium dioxide powder and a thin film by virtue of a cotton sacrifice template method. The method comprises the steps of firstlypreparing tungsten-doped porous vanadium dioxide powder from vanadium pentoxide, ammonium tungstate, oxalic acid and other materials through combination of hydrothermal reaction and the cotton sacrifice template method, preparing suspension liquid from the powder, and preparing the tungsten-doped porous vanadium dioxide thin film with excellent performance by virtue of a spin-coating method. Theprepared tungsten-doped porous vanadium dioxide powder has more small mesoporous structures and higher porosity, so that the visible light transmittance of the thin film can be effectively increased,and the sunlight modulation efficiency can be effectively improved; and by doping tungsten, the phase-transition temperature of the thin film can be effectively decreased.
Owner:WUHAN UNIV OF TECH
Composite cellulose nano-paper with single-sided conductivity, thermal conductivity and electromagnetic shielding function
PendingCN111235964AWide variety of sourcesLow priceNon-fibrous pulp additionPulp properties modificationElectrically conductiveThermal conductivity
Aiming at the problems of poor conductivity of a cellulose nano-paper and great reduction of strength in a high-humidity environment in the prior art, the invention provides the composite cellulose nano-paper. The composite cellulose nano-paper is prepared by the following method: firstly, preparing a cellulose nano-fibril wet film, namely a CNF layer from natural plant fibers containing lignin asa raw material, wherein the cellulose raw material is subjected to acid-based hydrolysis pretreatment, slowly pouring a graphene oxide dispersion liquid on the CNF layer wet film, and performing vacuum filtration to form a graphene oxide layer, namely a GO layer, drying to obtain a double-layer dry film of cellulose nanofibril composite graphene oxide, namely a CNF / GO dry film, carrying out reduction treatment on the CNF / rGO dry film in a water phase, and drying to obtain the CNF / rGO dry film-composite cellulose nano paper. The composite cellulose nano paper not only has excellent single-sided electrical conductivity, an electromagnetic shielding function and thermal conductivity anisotropy and but also is good in flexibility and high in strength. The preparation method is simple, green,environment-friendly and low in cost.
Owner:QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
A hybrid scheduling method for CAN bus control network
InactiveCN109167713AGuaranteed priorityGuaranteed real-timeBus networksTime informationNon real time
The invention relates to a hybrid scheduling method of a CAN bus control network, which relates to the field of information technology. The invention is used for solving the problem of data delay of CAN bus control network existing in the prior art. A hybrid scheduling method for CAN bus control network comprises the following steps: (1) dividing information frames in the CAN bus control network into emergency hard real-time information, common hard real-time information, soft real-time information and non-real-time information according to CAN protocol and using the first two bits of marker field; (2) scheduling the emergency hard real-time information and the common hard real-time information through a dynamic EDF algorithm, and scheduling the non-real-time information of the soft real-time information through a DM algorithm. The utility model has the advantages that the problem of data delay in the prior art can be solved and the reliability in the control process can be improved.
Owner:ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
Injection device of electric injection molding machine
Owner:宁波力劲塑机智造有限公司
Refrigeration cycle system adopting double heat exchange
InactiveCN105222422AGuaranteed Single CircuitImproved vacuum holding capacityMechanical apparatusFluid circulation arrangementPlate heat exchangerCooling coil
The invention discloses a refrigeration cycle system adopting double heat exchange. The refrigeration cycle system comprises a plate heat exchanger, a major cycle pipeline circulating pump, a low-temperature pneumatic ball valve I, a low-temperature pneumatic ball valve II, a minor cycle circulating pump, a heater, a one-way valve and pipes. The refrigeration cycle system is characterized in that all the members are connected through pipelines; in pre-freezing of the earlier stage, the major cycle pipeline circulating pump and the low-temperature pneumatic ball valve I are turned on and opened to form a major cycle channel with a front box shelf and a condenser cooling coil integrated; in primary drying, the low-temperature pneumatic ball valve I is closed, and the minor cycle pipeline circulating pump and the low-temperature pneumatic ball valve II are turned on and opened to form two minor cycle channels with respective cycles in the front box shelf and the condenser cooling coil. According to the refrigeration cycle system, through on-off fit of the pipes, motors and the valves of the cycle system, a heat transfer medium, namely silicone oil, is used for cooling the front box shelf of a vacuum freezing drier or cooling the condenser cooling coil. Precise control over the temperature of the shelf and the temperature of a condenser is achieved through matching of the motors and the valves of the cycle system.
Owner:宋占涛
Mobile phone detection method based on wavelet feature vector extraction
ActiveCN107203009AFalse positive rate does not increaseImprove key performanceCharacter and pattern recognitionNeural learning methodsSignal-to-noise ratio (imaging)Frequency band
The invention discloses a mobile phone detection method based on wavelet feature vector extraction. The method comprises the steps as follows: a detection signal is acquired, a to-be-detected article passes through a detection door, the detection signal is sampled, the sampling frequency is 30 HZ, the signal lasts for about 2 s, and the signal is sent to a computer after A / D conversion; the acquired detection signal is subjected to DB3 wavelet decomposition through wavelet analysis, 8 signal components are obtained and reconstructed, and signal feature vectors of different frequency bands are obtained, and the signal feature vector of each frequency band is extracted; then the feature vectors are subjected to dimension reduction with a principal component analysis method, and the signal feature vectors are transmitted to an application; an analysis result is output by a well-trained BP network. Mobile phone detection magnetic array acquisition signals are processed by the aid of DB3 wavelets, the acquisition array SNR (signal to noise ratio) is increased, mobile phone detection magnetic array data are subjected to wavelet decomposition for extraction of feature vectors, mobile phones and non-mobile phones are recognized, and the mobile phone detection accuracy is greatly improved.
Owner:NEXWISE INTELLIGENCE CHINA LTD
Preparation process for strontium titanate voltage sensitive ceramics
InactiveCN107117958AImprove microstructureLower sintering temperatureVaristor coresElectrical resistance and conductanceLithium
The invention belongs to the technical field of preparation of voltage dependent resistor materials and particularly relates to a preparation process for strontium titanate voltage sensitive ceramics. The preparation process comprises the following steps: improving burdening precision; pretreating raw materials by using a gamma radiant source; mixing the materials for two times, and controlling conditions for all the steps to obtain a product. Compared with the prior art, the preparation process disclosed by the invention has the following advantages that a 60Co gamma radiant source is used for radiating in the first-time material mixing process, so that part of raw materials can react in advance; the raw materials further react by raising the temperature, and further a strontium titanate crystalline phase with greater crystal grains is obtained; the sintering temperature is reduced under the condition of not adding lithium salts, a crystalline microstructure can be remarkably improved, and a crystal boundary is dense; main properties of the product are improved by an integrating effect of controlling all the conditions.
Owner:蚌埠市嘉实机电设备制造有限公司
Gas input control system of household electric appliance and oxygen-making and nitrogen-making device
InactiveCN107673312AImprove key performanceImprove performanceNitrogen purification/separationPipeline systemsControl systemInput control
The invention discloses a gas input control system of a household electric appliance and an oxygen-making and nitrogen-making device. The gas input control system comprises the oxygen-making and nitrogen-making device, wherein the oxygen-making and nitrogen-making device is used for separating out oxygen and nitrogen after inhaling air and conveying either the oxygen or the nitrogen to a working space of the household electric appliance; the oxygen-making and nitrogen-making device comprises a filter used for filtering the air, an air compressor used for compressing the air, a condensation tube used for cooling compressed air, a flow dividing valve used for periodically sending out cooled air, an adsorption tower used for separating the nitrogen and the oxygen, an oxygen storage tank usedfor storing separated-out oxygen and a nitrogen storage tank used for storing separated-out nitrogen; the filter, the air compressor, the condensation tube, the flow dividing valve and the adsorptiontower are connected in sequence; the oxygen storage tank and the nitrogen storage tank are both connected with the adsorption tank. When the household electric appliance is used, the main performanceof the household electric appliance is further enhanced and thus, a better functional effect is achieved.
Owner:NANJING CHUANGWEI HOUSEHOLD ELECTRONICS APPLIANCES LTD
A preparation method of electrothermal alloy and the prepared electrothermal alloy material
ActiveCN111961952BHigh resistivityImprove performanceHeating element materialsElectric resistivitySemiconductor
The invention discloses a method for preparing an electric heating alloy, using the existing iron-chromium-aluminum electric heating alloy or a new iron-chromium-aluminum electric heating alloy as the target iron-chromium-aluminum electric heating alloy; and then casting the ingot of the target iron-chromium-aluminum electric heating alloy Rough rolling into a strip, after the strip is annealed, spray semiconductor powder on both sides of the strip; after the semiconductor powder is inlaid on both sides of the strip, finish rolling is carried out, and the finished electrothermal alloy product is obtained after finishing rolling forming treatment; By adjusting the composition of the alloy and adjusting the preparation process of the overall electrothermal alloy, the resistivity of the iron-chromium-aluminum electrothermal alloy can be significantly increased to meet the use requirements and bring new breakthroughs in the use of the electrothermal alloy, which has great economic significance and market value.
Owner:江苏佳腾新材料有限公司
Method for preparing cobalt base alloy artificial joint taper-shank
InactiveCN1203818CImprove key performanceHigh tensile strengthFoundry mouldsJoint implantsWaxArtificial joints
The preparation process of cobalt base alloy artificial joint taper shank includes the main technological steps of: making mold; wax pressing-in and combination; making corundum casing adhered and reinforced with silica gel, casting at 1400-1600 and maintaining for 5-30 min via directional solidification in 5-10 mm / min drawing rate, cleaning and post-treatment. In the wax pressing-in and combination step, directional guiding section is designed to form a cone and the wax molds are so combined as to ensure the lengthwise of the formed joint taper shank perpendicular to the isothermal cross section in directional solidification. The technological process of present invention has high product quality and raised performance indexes of the product.
Owner:BEIJING AVIATION MATERIAL INST NO 1 GRP CORP CHINA AVIATION IND
Adjustable resistance with switch
ActiveCN100533607CSmall shapeImprove key performanceResisitors with sliding contactRotary switchEngineering
A variable resistor with a switch, the key mechanism has a key member (53) and a plate spring (54) for the key, the resistor unit has a resistance substrate (57k) and a first slide key including a contact point (58a1), and a rotary switch There is a second insulating case (59) as a contact substrate and a second slide key including a contact (58d1), and when the rotating shaft (52) is rotated, the contact (58d1) slides on the contact substrate part (59k) to perform When the switch is switched, the second bulging part (54d) of the leaf spring (54) for the key is engaged with the protrusion (53b) of the key member (53) and disengaged, and then the first bulge of the leaf spring (54) for the key is released. The part (54c) engages and disengages from the engaging protrusion (53a) of the key component (53), thereby producing different key tactile sensations. Such a variable resistor with a switch can obtain a key touch feeling that does not produce an uncomfortable feeling and can reduce the shape of the switch part.
Owner:ALPS ALPINE CO LTD
Universal lubricating oil suitable for mini-tiller and having good oxidation resistance
The invention relates to universal lubricating oil suitable for a mini-tiller and having good oxidation resistance. The universal lubricating oil comprises base oil and a plurality of additives, and specifically comprises the following components in parts by weight: 89.0-95.0 parts of base oil, 1.0-2.0 parts of high-alkali synthetic calcium sulfonate, 2.0-3.0 parts of an antirust agent, 1.0-2.0 parts of polyisobutene bi-butylene phthalein imine, 1.0-2.0 parts of zinc butyl octyl dithiophosphate, 1.0-1.5 parts of sodium citrate, 0.7-2.5 parts of a complex antioxidant, 3.5-6.5 parts of a compound detergent and 1.8-3.0 parts of an ashless dispersant. According to the lubricating oil, common use of lubricating oils for the whole mini-tiller and different mini-tillers is achieved; and in addition, the lubricating oil also has good abrasive resistance, anti-rust property and oxidation resistance, and meets the requirements of people on the anti-rust property.
Owner:CHONGQING JIAZHOU LUBRICATING OIL
Method of synthesizing strontium titanate solid nuclear waste material
InactiveCN1236455CHigh densityReduce porosityRadioactive decontaminationStrontium titanateSelf-propagating high-temperature synthesis
The invention provides a method for using self-spread high temperature synthesis technology to produce strontium titanate solidified radioactive nuclide. It uses CrO3 as the oxidant, the reaction formula is: 2CrO3+3Ti+4SrO+TiO2=4SrTiO3+2Cr+Q. the process method: the reaction material ball grinded into the one with particle size less than 70 micro meter, the CrO3, Ti, SrO and TiO2 are blended according to mol ratio 2:3:4:1 after being sifted, and they are produced into pressed cog. The pressed cog is put into the self-spread high temperature synthesis static pressure reactor device and the put into the powder compound chemical reacting media; it induces the exothermic chemical reaction of the media, uses its high speed heat release to heat the sample to high temperature, and induces the integral real-time combustion synthesis in the sample. The strontium titanate can be acquired after the reaction, takes out the sample after being cooled.
Owner:UNIV OF SCI & TECH BEIJING
A kind of polyethylene masterbatch composite auxiliary agent and preparation method thereof
The invention discloses a polyethylene master batch compound additive and a preparation method thereof. The polyethylene master batch compound additive is prepared from the following components: 1 to 10% of nanometer fully-vulcanized powdered silicone rubber, 18 to 25% of nanometer silica, 1 to 8% of a dispersant, 1 to 8% of an organosilicon active flow aid, 1 to 5% of a fluorine-containing polymer, 3 to 5% of an anti-oxidant 168, 3 to 5% of an anti-oxidant 1010, 1 to 4% of an antistatic agent, 1 to 4% of an ultraviolet ray absorber and 50 to 60% of a PE carrier resin. The polyethylene master batch compound additive has the characteristics of a great number of functions, safety, environment friendliness and strong exclusiveness and enables a plastic product to have multiple excellent performances.
Owner:南京淳达科技发展有限公司
A kind of general lubricating oil for tiller engine and gear box
InactiveCN103695136BAchieve universalImprove key performanceLubricant compositionEngineeringMooney viscosity
The invention relates to all-purpose lubricating oil for a motor and a gear case of a mini-tiller. The all-purpose lubricating oil comprises the following components by mass percent: 89.0-93.6% of base oil and a plurality of additives, wherein the kinematic viscosity of the base oil at 100 DEG C is 15-17mm<2> / s; the first additive is 1.0-2.0% of synthetic calcium sulfonate with high base number; the second additive is 2.0-3.0% of sulfurized calcium alkyl phenol with high base number; the third additive is 1.0-2.0% of polyisobutene bissuccinimide; the fourth additive is 1.0-2.0% of sulfurphosphorousbutyloctyl zinc salt; the fifth additive is 1.0-1.5% of amino monothioester; the sixth additive is 0.2-1.0% of terpolymer of ethylene, propylene and non-conjugated alkadiene, wherein the mooney viscosity (ML(1+4) 100 DEG C) of the sixth additive is 25-35; the seventh additive is 0.0001-0.0002% of polydimethylsiloxane. The invention also relates to a preparation method of the lubricating oil. The all-purpose lubricating oil can be used as the lubricating oil for a gasoline engine and a gear case of a mini-tiller, and also can be used as the lubricating oil for a diesel engine and the gear case of the mini-tiller.
Owner:LOGISTICAL ENGINEERING UNIVERSITY OF PLA +1
Automatic mold locking force control method of injection molding machine, equipment and medium
InactiveCN111590840AImprove key performanceGuarantee repeatability of clamping forceControl engineeringProcess engineering
The invention provides an automatic mold locking force control method of an injection molding machine. The method comprises the steps of obtaining mold locking force information input by a user, and calculating a micro-opening position in a preset mold locking force crankshaft corresponding table according to the mold locking force information; controlling the injection molding machine to start amold closing action, judging whether a crankshaft is completely straightened or not when the mold closing action is stopped, if so, executing a micro mold opening treatment step, and if not, carryingout position adjustment treatment on the injection molding machine; and enabling the micro-opening position to serve as a micro-opening stroke, and controlling the injection molding machine to executethe micro-opening action according to the micro-opening stroke. According to the automatic mold locking force control method of the injection molding machine, automatic mold locking force control isconducted on the injection molding machine according to the mold locking force information input by the user, human intervention and other factors are reduced, the consistency of the mold locking force of automatic mold adjustment can be guaranteed, the repeated precision of the mold locking force of the all-electric injection molding machine is effectively guaranteed, and the key performance of the injection molding machine is improved.
Owner:BORCH MACHINERY
A mobile phone detection method based on wavelet feature vector extraction
ActiveCN107203009BImprove detection success rateImprove key performanceCharacter and pattern recognitionElectric/magnetic detectionFeature vectorWavelet decomposition
The invention discloses a mobile phone detection method based on wavelet feature vector extraction, which includes collecting detection signals, passing the object to be tested through the detection gate, and sampling the detection signals. The sampling frequency is 30HZ, and the signal duration is about 2s. After A / After D conversion, it is sent to the computer; using wavelet analysis, the collected detection signal is decomposed by DB3 wavelet, and 8 signal components are obtained, and the signal components are reconstructed to obtain signal feature quantities of different frequency bands, and then the signal feature quantities of each frequency band are extracted; The principal component analysis method is used to reduce the dimension of the feature vector, and the signal feature quantity is transmitted to the application program; the trained BP network outputs the analysis result. The invention uses the DB3 wavelet to process the acquisition signals of the mobile phone detection magnetic array, improves the SNR of the acquisition array, performs wavelet decomposition on the mobile phone detection magnetic array data to extract feature vectors, and identifies mobile phones and non-mobile phones, greatly improving the accuracy of mobile phone detection.
Owner:NEXWISE INTELLIGENCE CHINA LTD
Explicit dynamics ground stress initialization method and system, medium and computer equipment
ActiveCN112446151AEasy to set upImprove key performanceDesign optimisation/simulationSpecial data processing applicationsStress distributionSimulation
The invention belongs to the technical field of underground engineering numerical simulation, and discloses an explicit dynamics ground stress initialization method and system, a medium and computer equipment. The explicit dynamics ground stress initialization method comprises the steps: building a numerical model according to an actual underground engineering problem; giving corresponding kineticparameters to the model according to the specific geographical environment; setting specific boundary conditions for the established numerical model; and performing explicit dynamics calculation on the model until the model is stable. According to the method, the stress initialization process is directly integrated into the calculation process of explicit dynamics, so that a traditional stress initialization method is greatly simplified, and operation is easy; setting of materials, boundaries and the like of the model is easy; and finally, the accurate ground stress distribution situation canbe obtained, and a key problem in the field of deep engineering numerical simulation is optimized.
Owner:SICHUAN UNIV
Double heat exchange refrigeration cycle system
InactiveCN105222422BGuaranteed Single CircuitImproved vacuum holding capacityMechanical apparatusFluid circulation arrangementFreeze-dryingCondenser (heat transfer)
The invention discloses a double heat exchange refrigeration cycle system, including a plate exchanger, a large circulation pipeline circulation pump, a low-temperature pneumatic ball valve I, a low-temperature pneumatic ball valve II, a small circulation pipeline circulation pump, a heater, a one-way valve and Pipeline, which is characterized in that: all components are connected by pipelines, and when pre-freezing in the early stage, the circulation pump of the large circulation pipeline and the low-temperature pneumatic ball valve I are turned on to form a large circulation channel integrating the front box shelf and the condenser cooling coil; once dried , close the low-temperature pneumatic ball valve I, open the small circulation pipeline circulation pump and low-temperature pneumatic ball valve II to form two small circulation channels for the front box shelf and the condenser cooling coil. In the present invention, the heat transfer medium silicon oil is used to cool the shelf of the front box of the vacuum freeze dryer or the cooling coil of the condenser through the cooperation of the pipes of the circulation system and the switches of the motors and valves. The precise control of the temperature of the shelf and the temperature of the condenser is realized through the mutual cooperation of the motors and valves of the circulation system.
Owner:宋占涛
A production device and production method for graphene-based composite negative electrode materials
ActiveCN108461735BImprove cycle lifeImprove key performanceCell electrodesSecondary cellsInternal resistanceGraphite
The invention relates to a production apparatus for a graphene-based composite negative electrode material. The production apparatus comprises a loading apparatus, a vacuum planetary stirrer arrangedon the downstream of the loading apparatus and a reaction kettle arranged on the downstream of the vacuum planetary stirrer, wherein the reaction kettle also comprises a discharging apparatus. The invention also provides a production method of a graphene-based composite negative electrode material for a lithium ion battery. The production method comprises the following steps: producing a graphene-based composite negative electrode material of a core-shell structure by utilizing the production for the graphene-based composite negative electrode material, producing a reaction raw material by virtue of the vacuum planetary stirrer, and forming the graphene-based composite negative electrode material of the core-shell structure from the reaction raw materials at the reaction temperature of 600to 700 DEG C and a dynamic pressure condition of 10 to 12 hours in the reaction kettle. By virtue of the production device and the production method, the problem of the lithium battery that the cyclelife of the battery is low can be solved, the key performance of the battery is improved, the internal resistance of the battery is reduced, and the heat dissipation problem of a battery cell when inhigh-magnification charging and discharging can be solved.
Owner:福州鼎烯飞扬科技有限公司
Adjustable resistance with switch
ActiveCN1797616ASmall shapeButton touch does not produceResisitors with sliding contactRotary switchEngineering
The present invention provides a variable resistor with a switch, the click mechanism is constituted to provide a click member 53 and a plate spring 54 for click, a resistor unit is constituted to comprise a resistance board 57k and a first slider including a contact 58a1, a rotary switch is constituted to comprise a second insulating case 59 as a contact board and a second slider including a contact 58d1, when a rotating axis 52 is rotated, the contact 58d1 slides on the contact board 59k to change over the switch, a second extruded part 54d of the plate spring 54 for click is disengaged to the projected part 53b of the click member 53, and subsequently the first extruded part 54c of the plate spring 54 for click is disengaged to the engaged projected part 53a of the click member 53, thereby resulting in generation of different feelings of click.
Owner:ALPS ALPINE CO LTD
Harmonic current generating device and method for controlling stepless linear output of harmonic current
PendingCN111856094AReduce energy consumptionLow costElectrical measurement instrument detailsElectrical testingControl engineeringPower grid
The invention provides a harmonic current generating device. The invention further provides a method for controlling stepless linear output of the harmonic current, the harmonic current and control over linear dynamic stepless output of the harmonic current are simulated, energy consumption is low, and the energy-saving effect is good. The method comprises the steps that a load simulation unit isconnected with a power grid and used for simulating and restoring various power utilization load working conditions on site; a sampling unit is connected with the power grid and load simulation unit and is used for sampling the load simulation unit; a harmonic current stepless dynamic generation unit is connected with the sampling unit and the load simulation unit; a harmonic current stepless dynamic generation unit calculates to obtain load harmonic current according to the current sampling data obtained by the sampling unit, and outputs supplementary harmonic current to the load simulation unit according to a difference value between the load harmonic current and a target harmonic current value; and a main control unit is connected with the harmonic current stepless dynamic generation unit and is used for sending a target harmonic current value at the current moment to the harmonic current stepless dynamic generation unit in real time.
Owner:江苏莱提电气股份有限公司
Elastic pad for fixing valve control lead-acid battery
InactiveCN1794485ARelieve stressTimely supplementLead-acid accumulatorsCell component detailsGratingEngineering
This invention relates to a spring bearing plate of a fixed valve-controlled lead acid storage battery made of a hydrophilic spring material of H2SO4-proof, which can not only reduce the pressure to the shell generated by extension of the positive pole plate grating but also can supplement electrolyte of the cell to solve the problem of loss control of heat and drying up of electrolyte.
Owner:山西通用集团股份有限公司
Calibration method of x-ray machine tube current
ActiveCN107049347BImprove current output accuracyImprove key performanceRadiation generation arrangementsEngineeringComputational physics
The invention discloses a calibration method of X-ray generator tube current. The method comprises the following steps of dividing an initial characteristic curve of pipe current-filament current into N sections, using a straight line to connect two end points of each section of the curve, and calculating an equation (Yn=knx+b) of each section of the straight line, wherein kn represents the slope of the nth section of the straight line, n=1,...,N, b is a constant, x is a pipe current value, and Yn is a voltage value of the filament current; collecting the pipe current value of the two end points of each section of the straight line and the corresponding voltage value of the filament current, comparing the collected data with data of the initial characteristic curve, wherein if an error is smaller than an error threshold value, then the equation of the section of the straight line is constant, and if the error is larger than the error threshold value, the collected data is utilized to renew the equation of the section of the straight line; using the equation of the straight line to calibrate the initial characteristic curve, selecting a corresponding equation of the straight line according to the pipe current value which needs to be utilized, and using the equation of the straight line to calculate the corresponding voltage value of the filament current. Through the calibration method of the X-ray generator tube current, calibration can be conducted on the pipe current of a ball pipe, and thus precise output of the pipe current is achieved.
Owner:ZHUHAI HOKAI MEDICAL INSTR
Education system and education method based on five novel education ideas for people
PendingCN114694457AImprove key performanceRaise the level of developmentData processing applicationsTeaching apparatusCourseworkComputer science
The invention provides an education system and an education method based on five novel education concepts, and the education system based on the five novel education concepts comprises a campus culture system, a school management system, a classroom reform system, a teacher training system, and a student development system. And the campus culture system comprises a spirit culture subsystem and a material culture subsystem. According to the education system and the education method based on the five novel education ideas for people raising, growth conditions for development are provided for students by providing a spirit culture subsystem and a material culture subsystem, and the development level of the students is improved by integrally planning German education, simulating class grouping, managing targets, experiencing life school courses and establishing student practice base activities; an education system is perfected, special and targeted education is realized, continuous improvement is further realized, intelligence and a new-generation information technology level are improved through high-standard equipment, professional growth of teachers is concerned, and a good cultivation effect is achieved.
Owner:惠州中学 +1
An Underwater Acoustic Doppler Velocity Measurement Method Based on Autocorrelation Estimation and Valid Data Screening
ActiveCN109270295BHigh precisionImprove key performanceFluid speed measurementAlgorithmDoppler measurements
The invention discloses an acoustic Doppler flow velocity measuring method based on autocorrelation estimation and valid data screening, and relates to the technical field of acoustic Doppler measurement. The method includes steps: estimating a complex autocorrelation function value R(tau), estimating a signal total power R(0), calculating a precision eta(v) of a sonar echo sample, and finally determining whether a current sample is reserved through a threshold. According to the method, samples of measurement data are screened through a relation between an autocorrelation estimation precisioncriterion value and the set threshold, the precision of underwater acoustic flow velocity estimation is improved, and it is indicated through analysis of actual measurement data that the method can obviously reduce the variance of flow velocity estimation and improve the key performance of an acoustic velocity-measuring device.
Owner:NANJING SHIHAI ACOUSTIC TECH CO LTD
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