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43results about How to "Low cost application" patented technology
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Parallel Flow Heat Exchangers Incorporating Porous Inserts
InactiveUS20080099191A1Low-cost applicationImprove system performanceMechanical apparatusEvaporators/condensersRefrigerantEvaporator
A parallel flow (minichannel or microchannel) evaporator includes a porous member inserted at the entrance of the evaporator channels which provides refrigerant expansion and pressure drop controls resulting in the elimination of refrigerant maldistribution and prevention of potential compressor flooding.
Owner:CARRIER CORP
Trash bag for wet trash
A trash bag for containing wet trash has an outer ply of fluid imperious material defining an outer front wall and an outer rear wall of the bag, and an inner ply of fluid pervious material defining an inner front wall and an inner rear wall of the bag. The inner and outer plies form a compartment between them which contains a highly fluid absorbent material. The material is capable of capturing any fluids that enter the compartment from the interior of the bag thereby minimizing fluid leakage from the bag in the event that the outer ply of the bag is breeched. The material in the compartment may be combined with or include any of a variety of additional substances designed to act on, react to or counter the effects of fluids absorbed by the material. A low-cost, consumer version of the trash bag eliminates the inner ply, and simply comprises an outer ply of fluid impervious material with an inner liner of fluid absorbent material such as cellulose fluff pulp in sheet form.
Owner:JACOBY JAY +1
Electric motor/generator
ActiveCN103931081AExtended service lifeSmall magnetic resistanceAssociation with control/drive circuitsMagnetic circuit rotating partsEngineeringElectric generator
Certain embodiments are directed to devices, methods, and / or systems that use electrical machines. For example, certain embodiments are directed to an electrical machine comprising: at least one stator at least one module, the at least one module comprising at least one electromagnetic coil and at least one switch, the at least one module being attached to the at least one stator; at least one rotor with a plurality of magnets attached to the at least one rotor, wherein the at least one module is in spaced relation to the plurality of the magnets; and the at least one rotor being in a rotational relationship with the at least one stator, wherein the quantity and configuration of the at least one module in the electrical machine is determined based in part on one or more operating parameters; wherein the at least one module is capable of being independently controlled; and wherein the at least one module is capable of being reconfigured based at least in part on one or more of the following: at least one operating parameter during operation, at least one performance parameter during operation, or combinations thereof. Other embodiments are also disclosed.
Owner:AXIFLUX HLDG
Linear Fresnel reflection type mid-and-low temperature solar energy thermochemical utilization device
InactiveCN103383150ASimple structureManufacturing and running costs are lowSolar heating energySolar heat devicesSystem integrationEnergy transfer
A linear Fresnel reflection type mid-and-low temperature solar energy thermochemical utilization device comprises a linear Fresnel reflection condensing mirror array driven by a solar tracking device to real timely track the sun, and a thermal absorber matched with the condensing mirror array and independently arranged, wherein the thermal absorber is tubular, a selective absorption coating is coated on the surface of the outer wall, and a chemical reactant medium and a catalyst are filled in the tube; a solar energy light-focusing system formed by the Fresnel reflection condensing mirror array and the solar tracking device is adopted and is well matched with the hot grade of thermal chemical reaction of mid-and-low temperature fossil fuel, the structure is simple, the manufacturing and running cost is low and the wing resistance is good when the solar energy thermochemical utilization device is mounted close to the ground; with the chemical reactant medium and the catalyst in the thermal absorber, the solar energy thermochemical utilization device can serve as the thermochemical reaction place while absorbing the solar energy, so that the heat can be directly absorbed and utilized, and the system integration complexity and energy transfer loss can be effectively reduced; as the thermal absorber is independently arranged, the safety and the stability are higher during the heat absorption and reaction process.
Owner:XI AN JIAOTONG UNIV
Horizontal axis wind turbine apparatus
InactiveUS20110299986A1Suppressing yaw movementReduce impactWind motor controlEngine fuctionsNacelleAngular degrees
The object of the invention is to provide a control apparatus C of a horizontal axis wind turbine apparatus WTG that calculates the value en of a pitch angle command for each blade based on the rate of change ΨD of the azimuth angle Ψ of a Nacelle N and the rotor azimuth angle φ of the blades B1, B2 and B3, causes the rotor to generate torque around the yaw axis by periodically controlling the angle change of the pitch angle of the blades, and using that torque, controls the rate of change of the azimuth angle of the nacelle. The value of that angle change is calculated as a value that increases as the inputted value of the rate of change ΨD increases.
Owner:HITACHI LTD
Semiconductor component having at least one organic semiconductor layer and method for fabricating the same
InactiveUS20050196972A1Reduce the ratioIncrease in the hysteresis of the transistorsSolid-state devicesSemiconductor/solid-state device manufacturingHigh resistanceParaffin wax
A semiconductor component has at least one organic semiconductor layer. The component also includes at least one protective layer for at least partially covering the at least one organic semiconductor layer to protect against environmental influences. The at least one protective layer contains a proportion of an alkane with CnH2n+1 and n greater than or equal to 15 or consists entirely of an alkane of this type, or of a mixture of alkanes of this type. In one example, the protective layer is a paraffin wax. This creates a high resistance to moisture.
Owner:POLARIS INNOVATIONS LTD
Semiconductor component having at least one organic semiconductor layer and method for fabricating the same
InactiveUS7303940B2Increase in the hysteresis of the transistorsImprove the immunitySemiconductor/solid-state device detailsSolid-state devicesParaffin waxHigh resistance
A semiconductor component has at least one organic semiconductor layer. The component also includes at least one protective layer for at least partially covering the at least one organic semiconductor layer to protect against environmental influences. The at least one protective layer contains a proportion of an alkane with CnH2n+1 and n greater than or equal to 15 or consists entirely of an alkane of this type, or of a mixture of alkanes of this type. In one example, the protective layer is a paraffin wax. This creates a high resistance to moisture.
Owner:POLARIS INNOVATIONS LTD
Ta2O5/TiO2/3D porous titanium material and preparation method thereof
ActiveCN108166040AGood biocompatibilitySolving bone implantsAdditive manufacturing apparatusSurface reaction electrolytic coatingSodium citratePorous titanium
The invention discloses a Ta2O5 / TiO2 / 3D porous titanium material and a preparation method thereof, and relates to the technical field of preparation of composite metal porous materials. The preparation method comprises the following steps that 3D porous titanium is polished, the polished 3D porous titanium is put into a sodium citrate-based solution for anodic oxidation treatment, the 3D porous titanium subjected to anodic oxidation treatment is dipped into a tantalum coating solution, the impregnated 3D porous titanium is dried, and the dried 3D porous titanium is put into a muffle furnace for sintering.
Owner:西安赛隆增材技术股份有限公司
Surface-treated titanium material excellent in oxidation resistance, production method thereof, and engine exhaust system
InactiveUS20050284544A1Improve antioxidant capacityImprove the immunityHot-dipping/immersion processesExhaust apparatusChemical compoundAlloy
Disclosed are a surface-treated titanium material that is excellent in oxidation resistance and allows the excellent oxidation resistance to last for a long period of time and the surface treatment itself to be applied safely at a low cost; the production method thereof; and an exhaust system thereof. A surface-treated titanium material produced by forming an oxidation-resistant baked film 5 μm or more in thickness on a substrate comprising commercially pure titanium or titanium-base alloy, and said baked film is formed by filling the gaps among particles comprising Al alloy containing Si by 10 at % or less or commercially pure aluminum with chemical compounds comprising a metallic element M (M represents one or more of Ti, Zr, Cr, Si and Al) and C and / or O.
Owner:KOBE STEEL LTD
Electrophoretic chip for optical detection and electrophoretic device thereof
The invention relates to a capillary electrophoretic chip for optical detection and an electrophoretic device having the same. The chip is combined by two substrates, and the material of the substrate is an optically transparent polymer. An electrophoretic separation microstructure and an optical microstructure are created on the substrate A. The optical microstructure is created on the reflecting surface of the side of the electrophoretic separation channel to reflect the detection beam into the separation channel, and the detection beam enters from the side of the separation channel so as to excite the fluorescence of a sample. The fluorescence is detected in a direction perpendicular to the substrate surface, which is also perpendicular to the detection beam, so the interference from the excited light is reduced. The other substrate B as a cover plate is covered on the substrate A. The electrophoretic device comprises an electrophoretic chip, a high pressure module, a light source module, an exciting optical module, a collecting optical module, an optical filter, a photoelectric detector, a data reception module, and a processing and control module. The invention is applicable to high sensitive optical detection by creating an optical microstructure on the chip and combining with the electrophoretic device. The optical microstructure and the separation microstructure on the chip can be completed in one creating step, which facilitates process simplification, cost reduction, and batch production.
Owner:UNIV OF SHANGHAI FOR SCI & TECH
MEMS-based optical communications beam steering apparatus
A MEMS-based optical steering apparatus for free space optical transmitters, receivers, and transceivers is disclosed. The MEMS device comprises actuators linked to an optic fiber, the actuators operable to maneuver the optical fiber in the X-Y plane at the focal point of the transmitter, receiver, or transceiver. The MEMS device may thus be used to replace gimbals for beam steering applications.
Owner:SPACE PHOTONICS
Valve for injecting fuel
ActiveUS20130327970A1Low costImprove featuresOperating means/releasing devices for valvesNoise reducing fuel injectionEngineeringMechanical engineering
Owner:ROBERT BOSCH GMBH
Rock mass grouting diffusion range monitoring method and device
PendingCN112798474AImprove accuracyReal-time monitoring of diffusion rangeLiquid dispersion analysisPermeability/surface area analysisData connectionData acquisition
The invention relates to a rock mass grouting diffusion range monitoring method and device, and the method comprises the steps: arranging measuring lines along the transverse and vertical symmetry axes of the center of a rock mass, numbering measuring points, and determining the positions of excitation points and vibration pickup points; arranging an acceleration sensor at the excitation point; connecting one end of a data connecting line with the acceleration sensor, connecting the other end of the data connecting line to a data acquisition instrument, connecting the data acquisition instrument with a terminal, and transmitting obtained real-time data to the terminal; arranging a force sensor provided with a hammer head and used for measuring the exciting force; carrying out a preset number of hammering tests at each excitation point position, and calculating the fractal box dimension of acceleration response according to the selected preset number of groups of data; and comparing the difference of the dimensions of the acceleration response fractal boxes among different measuring points, and monitoring the size and range of the rock mass crack by a hammering method, so as to determine the grouting diffusion range of the rock mass according to the size and range of the rock mass crack. The determination of slurry diffusion and the influence range thereof in the similar model experiment can be realized.
Owner:中煤能源研究院有限责任公司 +1
Method for preparing TiC reinforced titanium-based composite material based on cross-linking modified sintered titanium hydride
ActiveCN112342419ATensile plasticity achievedWear volume reductionTransition element hydridesTitanium matrix compositesNonferrous metal
The invention belongs to the technical field of non-ferrous metal processing, and discloses a method for preparing a TiC reinforced titanium-based composite material based on cross-linking modified sintered titanium hydride and the prepared composite material. Particularly, composite powder is prepared through the cross-linking reaction of hydroxylated titanium hydride and a carbon source, and theTiC reinforced titanium-based composite material is generated in situ through high-temperature sintering. According to the composite material prepared through the method, TiC with the size of 1-50 microns is evenly distributed in a Ti matrix, and the density of a sintered block is larger than or equal to 99%; and the tensile plasticity can reach 8%, the tensile strength can reach 570 MPa, and theabrasion volume is reduced by 19% compared with pure titanium. By means of the method, the problem of poor mechanical properties of a titanium-based composite material prepared by taking titanium hydride as a raw material in the prior art is solved, the preparation cost of the composite material is reduced, and the obtained TiC reinforced titanium-based composite material with excellent properties can be applied to preparation of high-strength wear-resistant structural parts in the fields of aerospace, armored cars, weapons, ships, automobiles and the like.
Owner:SOUTH CHINA UNIV OF TECH +1
Cheap cholera-diagnosing micro-fluidic unit capable of realizing liquid flow driving based on interfacial characteristics
InactiveCN107754915ALow cost applicationReduce manufacturing costLaboratory glasswaresBiological testingUltrasonic sensorShortest distance
The invention relates to a cheap cholera-diagnosing micro-fluidic unit capable of realizing liquid flow driving based on interfacial characteristics, belonging to the field of analytical testing. A series of obstacles exist in preparation of a substrate for a cholera-diagnosing micro-fluidic chip from cheap and easily workable polydimethylsiloxane (PDMS). According to main points of a technical scheme in the invention, PDMS with an original surface is selected as a substrate; the pipelines of a chip are filled with a micronsized silica particle filler which is used for supporting the inner walls of the pipelines, compensating original hydrophobic pipelines with a set of hydrophilic micro-channels, and extruding and covering the inner wall surfaces of the pipelines so as to reduce the contact between biological macromolecules and the inner wall surfaces; and a minisized ultrasonic transducer is adhered onto the terminal of the chip, and rapid and progressive decrease of ultrasonic intensity is realized in a short distance in virtue of strong ultrasonic wave absorption capacity of PDMS, so interfacial tension difference is formed at two ends of the chip under such induction, and sample liquid flow is thus allowed to flow towards the terminal along the pipelines of the chip.
Owner:蒋剑萍
Method for preparing titanium-based composite material by sintering pre-dispersed graphite composite titanium hydride
ActiveCN112281009ASolve reunionSolve problems such as poor alloy performanceTitanium matrix compositesNonferrous metal
The invention belongs to the technical field of nonferrous metal processing, and discloses a method for preparing a titanium-based composite material by sintering pre-dispersed graphite composite titanium hydride and the prepared composite material. Specifically, titanium hydride powder and graphite powder are used as raw materials to form a TiC reinforced titanium-based composite material by powder metallurgy. The method comprises the following steps that firstly, the graphite powder is pre-dispersed by using polyvinylpyrrolidone; and then, the graphite powder is attached on the surface of titanium hydride for sintering formation, so that such problems as powder agglomeration and weak alloy performance caused by direct physical mixing of the titanium hydride and the graphite powder are solved. The tensile strength of the obtained TiC reinforced titanium-based composite material can be 535 MPa; the elongation after fracture can be 10%; the optimized wear volume is reduced by 15% compared with pure titanium; compared with a titanium-based composite material prepared by using titanium hydride as a raw material reported in the literature, the breakthrough in greatly improving the tensile plasticity is realized; and the method can be applied to the preparation of high-strength parts or wear-resistant structural parts in the fields of aerospace, armored cars, weapons, ships and automobiles.
Owner:SOUTH CHINA UNIV OF TECH +1
Valve for injecting fuel
ActiveUS9771908B2Increase dampingNoise is transmittedOperating means/releasing devices for valvesNoise reducing fuel injectionEngineeringMechanical engineering
Owner:ROBERT BOSCH GMBH
motor/generator
ActiveCN103931081BExtended service lifeSmall magnetic resistanceAssociation with control/drive circuitsMagnetic circuit rotating partsEngineeringElectric generator
Certain embodiments are directed to devices, methods and / or systems using electric machines. For example, certain embodiments are directed to an electric machine comprising: at least one stator; at least one module, at least one module including at least one electromagnetic coil and at least one switch, at least one module attached to the at least one stator; at least one rotor with a a plurality of magnets of at least one rotor, wherein at least one module is in spaced relationship to the plurality of magnets; and at least one rotor is in rotational relationship to at least one stator, wherein the number and configuration of at least one module in the electric machine is based in part on one or more operating parameters; wherein at least one module is individually controllable; and wherein at least one module is reconfigurable based at least in part on one or more of: at least one operating parameter during operation, at least one performance parameter during operation, or a combination thereof . Other embodiments are also disclosed.
Owner:AXIFLUX HLDG
Inexpensive acquired immunodeficiency syndrome diagnosis microfluidic apparatus with specific fluid drive mode
InactiveCN107754909ALow cost applicationReduce manufacturing costLaboratory glasswaresMaterial electrochemical variablesSilica particleTransducer
The invention relates to an inexpensive acquired immunodeficiency syndrome diagnosis microfluidic apparatus with a specific fluid drive mode, and belongs to the field of analysis and testing. According to the present invention, the use of inexpensive and easily-processed polydimethylsiloxane (PDMS) to produce the substrate of a microfluidic chip for diagnosing acquired immunodeficiency syndrome isthe technical target; and the inexpensive acquired immunodeficiency syndrome diagnosis microfluidic apparatus is characterized in that the substrate selects the PDMS having an original ecological surface, the pipeline of the chip is filled with a micro-scale silica particle filler, the micro-scale silica particle filler is used for supporting the inner wall of the pipeline, compensating the original hydrophobic pipeline with the set of hydrophilic micro-flow channels, and extruding and covering the inner wall surface of the pipeline so as to reduce the opportunity of the contact between biological macromolecules and the inner wall surface, a miniature ultrasonic wave transducer is arranged close to the sample liquid flow terminal of the microfluidic chip in an attached manner, and the rapid reduction of the ultrasonic wave intensity within the short time is achieved through the strong absorption on the ultrasonic waves by the PDMS, such that the interface tension difference formed onboth ends of the chip is induced so as to promote the sample liquid flow to flow to the terminal direction along the pipeline of the chip.
Owner:蒋剑萍
Method for forming shallow trenches of the dual active regions
ActiveUS9871064B1Meet needsLow-cost applicationSolid-state devicesSemiconductor/solid-state device manufacturingEngineeringSemiconductor
The invention disclosed a method for forming shallow trenches of the dual active regions. Firstly, forming an etch stop layer on a semiconductor substrate; secondly, using a first accurate photomask to expose and develop the semiconductor substrate, until the etch stop layer has been exposed on the top of the first shallow trench regions and the second shallow trench regions; thirdly, etching the etch stop layer entirely in the exposed regions; fourthly, using a second photomask to expose and develop the first shallow trench regions which require a deeper etch depth of the trench than that of the second shallow trench regions; fifthly, etching and forming preliminary entirely depth in the first shallow trench regions, and then removing the second photomask; at last, taking the etch stop layer as a mask, and simultaneously etching the first shallow trench regions and the second shallow trench regions to form the first hallow trenches and the second shallow trenches having different depths. The invention has realized a low-cost photomask application and an optimization of the etching process by optimizing the photomask design.
Owner:SHANGHAI HUALI MICROELECTRONICS CORP
A performance regeneration method of porous adsorbent material after adsorbing malachite green
ActiveCN107670650BLow cost applicationAchieve recoveryOther chemical processesSpecific water treatment objectivesMalachite greenActivated carbon
The invention mainly belongs to the technical field of pollution treatment of trace malachite green in a freshwater culture water body and in particular relates to a performance regeneration and recovery method of a porous adsorption material adsorbed with malachite green. The performance regeneration and recovery method comprises the following steps: collecting the porous adsorption material adsorbed and loaded with the malachite green to prepare a suspension solution; adding a reducing agent into the suspension solution in a solid form or a high-concentration solution form until the malachite green loaded on the porous adsorption material cannot be detected in a sampling and analysis process; then continually adding a certain amount of the reducing agent; after continually stirring for acertain time, filtering and removing surface water to obtain the regenerated porous adsorption material with recovered adsorption performance. According to the method provided by the invention, dyestuffs including the malachite green and the like, biologically adsorbed, adsorbed by active carbon, adsorbed by an inorganic mineral porous material and adsorbed by ion exchange resin, in the water body can be easily desorbed, so that the recovery and regeneration of performance of the porous adsorption material made of various materials are realized and the regenerated porous adsorption material is used for the next turn of adsorption and purification process.
Owner:UNIV OF SCI & TECH BEIJING
Highly integrated active phased array transceiver components
ActiveCN106953658BLow costReach cost applicationWave based measurement systemsTransmissionTransceiverHigh density
Owner:10TH RES INST OF CETC
A Tunnel Convergence Online Monitoring Device Based on Torque Type Angle Measurement
ActiveCN106595579BAchieve securitySmall footprintAngle measurementHeight/levelling measurementEngineeringSpring steel
Owner:THE FIRST ENG CO LTD OF CTCE GRP
Water curtain/foamed aluminum composite noise reduction method and noise reduction device
PendingCN113053345AImprove noise reductionImprove sound absorptionSound producing devicesSeawaterWater curtain
The invention discloses a water curtain / foamed aluminum composite noise reduction method. According to the method, water flows on the uneven surfaces of foamed aluminum plates vertically placed on the sea surface to form a water curtain, and the water curtain with a good noise reduction effect is compounded with a foamed aluminum porous material, so that the noise reduction effect can be further improved. The porous structure on the uneven surface of the foamed aluminum can promote the water flow to collide with the foamed aluminum to form more small bubbles, so that the sound absorption effect of the water curtain is further enhanced. The foamed aluminum plates support the water curtain flowing on the surface of the foamed aluminum plates, so that the noise reduction effect is stabilized, and the influence of airflow and water flow on the water curtain is weakened. The foamed aluminum plates are of a composite structure of aluminum and air holes, and the metal material of the foamed aluminum plates is resistant to seawater corrosion, high in specific strength and high in weather resistance. The water curtain utilizes water resources in seawater, so that a composite noise reduction device is suitable for being applied to offshore wind plants with long service life and low cost.
Owner:清研特材科技(洛阳)有限公司
Microfluidic chip device depending on interphase interface characteristics to achieve sample fluid transfer
InactiveCN107344127ALow cost applicationReduce manufacturing costLaboratory glasswaresFluid controllersUltrasonic absorptionSilica particle
The invention relates to a microfluidic chip device depending on interphase interface characteristics to achieve sample fluid transfer, which belongs to the field of analytical testing. In practice, certain problems exist in using cheap and extremely easy-to-process polydimethylsiloxane (PDMS) to produce a substrate of a microfluidic chip. The microfluidic chip device is characterized in that PDMS with the original surface is chosen by the substrate, ducts of a chip are filled up with micron-sized silicon dioxide particle filler, and the functions of the filler include supporting the internal walls of the ducts, using a set of hydrophilic microchannels to compensate original hydrophobic ducts and squeezing and covering the internal wall surfaces of the ducts in order to reduce the chance of contact between biomacromolecules and the internal wall surfaces; a miniature ultrasonic transducer is mounted on a terminal of the chip in an attaching manner, the strong ultrasonic absorption of the PDMS is utilized to rapidly decrease ultrasonic intensity within a short distance, thereby an interface tension difference is induced to be formed at both ends of the chip, and sample fluid is then promoted to flow in a direction toward the terminal along the ducts of the chip.
Owner:李榕生
A method for preparing tic-reinforced titanium-based composites based on cross-linking modified sintered titanium hydride
ActiveCN112342419BTensile plasticity achievedWear volume reductionTransition element hydridesTitanium matrix compositesNonferrous metal
Owner:SOUTH CHINA UNIV OF TECH +1
Vapor chamber, vapor chamber manufacturing method and electronic equipment
PendingCN112272487AStrong and stable structureReduce manufacturing costCasings/cabinets/drawers detailsSupport structure mountingEngineeringMechanical engineering
The embodiment of the invention provides a vapor chamber, a vapor chamber manufacturing method and electronic equipment. The vapor chamber forms a closed accommodating cavity through bonding connection between a first shell and a second shell, a capillary structure is located in the accommodating cavity, and the capillary structure is located in the accommodating cavity; moreover, the capillary structure is arranged in the second shell, and the face, facing the second shell, of the capillary structure is fixed to the second shell, so the vapor chamber has a good heat dissipation function; meanwhile, the manufacturing cost generated in the production process of the vapor chamber can be reduced, and the phenomenon of poor products can be reduced to a large extent.
Owner:HUAWEI MACHINERY
A kind of in-situ ultrafine grain TIC reinforced titanium matrix composite material based on cyclohexene ball milling medium and its preparation method
ActiveCN112226639BUniform tissueHigh density without pressure sinteringTitanium matrix compositesNonferrous metal
The invention belongs to the technical field of non-ferrous metal processing, and discloses an in-situ ultrafine-grained TiC reinforced titanium-based composite material based on cyclohexene ball milling media and a preparation method thereof. Crystalline TiC, combined with sintering titanium hydride powder to prepare titanium-based composite materials. The pressureless sintering density of the TiC reinforced Ti-6Al-4V composite material alloy prepared by the invention is as high as 99.2%, the tensile strength is 1068MPa, and the elongation after fracture is 8%, realizing the tensile plasticity of the titanium-based composite material prepared by sintering titanium hydride A breakthrough from scratch, the wear volume of the adjusted composite material is 23% and 19% lower than that of Ti6Al4V and wear-resistant steel, respectively, and can be applied to high-strength or wear-resistant materials in aerospace, armored vehicles, weapons, ships, automobiles and other fields In the low-cost preparation of structural parts; the method of the invention is suitable for the preparation of composite materials of all titanium alloys, and has wide applicability.
Owner:SOUTH CHINA UNIV OF TECH +1
Method for determining the compressive tensile force acting on a fuel cell stack
PendingUS20210184234A1Rapid post-process controlLow-cost applicationTension measurementFuel cellsFuel cellsEngineering
The present invention relates to a method for determining the compressive tensile force acting on a fuel cell stack due to at least one tensioning element. Thereby, the compressive tensile force is the overall tensile force compressing the fuel cell stack. This is determined according to the invention by means of acoustic measurements on vibratable sections of the tensioning elements. The subject matter of the invention also includes a data processing program for carrying out the method according to the invention along with the use of a smartphone for carrying out the method according to the invention.
Owner:AUDI AG
Digital television exciter capable of outputting multiple channels simultaneously
InactiveCN105306846ASatisfy the needs of signal transmissionSimple structureTelevision system detailsColor television detailsControl systemComputer science
This invention discloses a digital television exciter capable of outputting multiple channels simultaneously. The digital television exciter comprises a clock distribution circuit; the clock distribution circuit is connected with N clock circuits arranged in parallel connection through phase-lock loops; N is not less than 2; the clock circuits comprise reference clocks and data clocks; the reference clocks and the data clocks are arranged in parallel connection; each clock circuit is connected with a single channel processing device; the single channel processing device is connected with a signal synthesizing device and a signal post-processing device in sequence; and the clock distribution circuit, the single channel processing device and the signal post-processing device are all connected with a control system. The digital television exciter has a simple structure and a convenient usage, reduces the hardware cost of the exciter, ensures that the work efficiency of each channel can be set freely in the whole television frequency band to break the limit of the signal bandwidth and realize a true multiple-channel exciter, meets the signal transmitting requirements of the multiple channels, and achieves the multiple-channel and low-cost application of the digital television in the remote areas.
Owner:BEIJING BBEF SCI & TECH
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