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40results about How to "Reduce repetition" patented technology

Calibration method and calibration device for vacuum ultraviolet imaging spectrometer

The invention provides a calibration method for a vacuum ultraviolet imaging spectrometer. The calibration method comprises the following steps of calibrating a wavelength measurement range, wavelength accuracy, spectrum response rate, uniformity and space angle resolution of the vacuum ultraviolet imaging spectrometer. The invention also provides a calibration device for the vacuum ultraviolet imaging spectrometer. The calibration device comprises a light source, a vacuum ultraviolet monochrome beam splitting system, a vacuum ultraviolet integrating sphere, a vacuum ultraviolet target and a vacuum ultraviolet collimating optical system which are arranged in an optical path in sequence, and further comprises a vacuum ultraviolet standard detector which is arranged on the output end of the vacuum ultraviolet collimating optical system together with the vacuum ultraviolet imaging spectrometer needing to be calibrated in a switchable manner, and a vacuum three-dimensional scanning mechanism which is used for implementing transformation of a space angle of the vacuum ultraviolet imaging spectrometer. By adopting the technical scheme of the invention, defects of the vacuum ultravioletimaging spectrometer in a design process can be timely discovered, and meanwhile, accuracy for data acquisition of the vacuum ultraviolet imaging spectrometer can be effectively guaranteed.
Owner:BEIJING ZHENXING METROLOGY & TEST INST

Method for determining performance indexes of pressure atomizing nozzle

ActiveCN106286063AReduce repetition and lossShorten the R&D cycleEngine testingFuel injection apparatusSpray nozzleDesign technology
The invention belongs to the technical field of aero-engine fuel nozzle design and especially relates to a method for determining the performance indexes of a pressure atomizing nozzle. The method includes the steps of a, determining an auxiliary spray cone angle, to be more specific, selecting a plurality of nozzles of different angles in a range of 50-80 degrees, and performing a flameout experiment under a ground idle state to select an optimal value; b, determining a main spray cone angle, to be more specific, calculating the main spray cone angle according to the size and position of a recirculation zone in a flame cylinder; c, determining auxiliary nozzle flow; d, determining main nozzle flow according to the principle that Fn/delta P of an engine in the maximum state is smaller than 2.5 and the Fn/delta P of the engine in a cruising state is smaller than 13; e, determining nozzle atomizing quality; f, determining flow distribution nonuniformity, which is smaller than 1.5-2.0%, of a master fuel pipe. The method has the advantages that the performance indexes are determined step by step by reasonable experiments and calculating methods, repetition and loss during research and development are reduced, and research and development cycle is shortened.
Owner:TIANJIN CHENGLI AVIATION TECH CO LTD

Puncture oriented adherent observation type puncture endoscope for percutaneous renal stone-extraction operation

ActiveCN101390771AReduce potential riskRealize the purpose of real-time observationSuture equipmentsInternal osteosythesisCamera lensFailure rate
The invention relates to a puncture endoscope used for attached observation for puncturing and orientation in percutaneous nephrolithotomy, solving the technical problems of poor puncture accuracy, big amount of bleeding, high operation failure rate and poor safety of the existing appliances used in percutaneous nephrolithotomy. The puncture endoscope comprises a main endoscope body, an image transferring unit, a lighting unit, an ocular unit and a puncture body. The puncture body is composed of a puncture needle and an indwelling catheter. The ocular unit is composed of an ocular cover, an ocular lens and an ocular glass. The image transferring unit is composed of a multi-filament image transferring rod arranged inside a hollow outer tube of the puncture needle. The lighting unit is composed of a light beam collet which can be connected with the main endoscope body, a light beam interface which is arranged on the light beam collet and can be connected with an external light source, a light cone arranged inside the light beam interface, and a light transferring component which can transfer the external light source which passes through the light cone to the imaging surface of the multi-filament image transferring rod. The puncture body is fixedly arranged at the front end of the main endoscope body. The puncture endoscope has the advantages of good visibility during operations, high puncture accuracy, less bleeding, high operation success ratio and high safety and is unnecessary to be charged with water.
Owner:FEMTO TECH XIAN

Initially baked tobacco formula threshing optimized design method based on genetic algorithm

The invention discloses an initially baked tobacco formula threshing optimized design method based on a genetic algorithm. The initially baked tobacco formula threshing optimized design method comprises the following steps of: selecting n initially baked tobaccos from a tobacco database, and reading the inventory of the n initially baked tobaccos and index values of m chemical index items; setting a target value of a cigarette formed by the current formula threshing; taking the n initially baked tobaccos as n genes, forming a chromosome by randomly entitling different inventory using proportions to each gene, and constructing an initial group by a plurality of different chromosomes by the same method; calculating j chromosomes with high adaptability by using the initial group according to the genetic algorithm, and judging whether the j chromosomes with high adaptability meet a set target value; and outputting the chromosomes which meet the target value and serve as an initially baked tobacco formula. The genetic algorithm is applied to a formula threshing scheme for the initially baked tobaccos, so that the formula threshing scheme which closely meets the demand of a user can be obtained, and the design cost and the design time are saved.
Owner:OCEAN UNIV OF CHINA +1

Normal-pressure tool changing cutter secondary beam with slag sliding function

PendingCN108086988AImprove tunneling efficiencyGood drilling efficiencyTunnelsSlagEngineering
The invention provides a normal-pressure tool changing cutter secondary beam with a slag sliding function, and aims to solve the problem that the flow rate of normal-pressure tool changing cutter slagfrom a front panel of a cutter to a soil warehouse is low. The secondary beam comprises the cutter, primary beams and secondary beam bodies, the primary beams and the secondary beam bodies are alternately arranged on the cutter, scrapers are arranged on the primary beams, the soil warehouse is connected with the rear of the cutter, normal-pressure changing tools are arranged on the primary beams,the secondary beam bodies comprises tool apron plates, slag sliding plates and slag retaining plates, the side walls of the slag sliding plates are vertically arranged in the middles of the slag retaining plates, the tool apron plates are arranged on two upper sides of the slag sliding plates, and cutting knives are arranged on the outer sides of the tool apron plates. The normal-pressure tool changing cutter secondary beam with the slag sliding function solves the problem that the flow rate of the slag from the front panel of the cutter to the soil warehouse of a shield tunneling machine islow, so that shield tunneling machine is provided with a normal-pressure tool changing cutter in order to adapt to high-water-pressure environments and improves tunneling efficiency when tool changingsafety is ensured.
Owner:CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD

Hole alignment method and device of pile driver, pile driver and readable storage medium

PendingCN113047290AShorten adjustment timeImprove hole alignment efficiencyBulkheads/pilesEngineeringStructural engineering
The invention relates to the technical field of piling control, and particularly relates to a hole alignment method and device of a pile driver, the pile driver and a readable storage medium. The method comprises the steps that image information of a target hole is obtained, and position information and attribute information of the target hole are determined based on the image information; the target position of the pile driver is determined according to the position information, and the target posture of the pile driver is determined according to the attribute information; and the pile driver is controlled to be in the target posture when in the target position. By means of the hole alignment method and device of the pile driver, the pile driver and the readable storage medium, a user does not need to repeatedly adjust the position and posture of the pile driver, the position and posture of the pile driver are adjusted in place at a time, the adjusting time of the pile driver is greatly saved, the hole alignment efficiency of the pile driver is improved, and therefore the site construction efficiency is improved, dependence on the operation level of site workers is reduced, and the operation fatigue of the workers is reduced.
Owner:BEIJING SANY INTELLIGENT MFG TECH CO LTD

Spectral radiation luminance responsivity measurement system

The invention relates to the technical field of optical testing equipment and discloses a spectral radiation luminance responsivity measurement system. The system comprises a vacuum ultraviolet lightsource, a vacuum ultraviolet monochrome beam splitter, a vacuum ultraviolet uniformizing device, a reference radiation luminance meter, a switching device, a controller and an oil-free vacuum chamber,wherein the vacuum ultraviolet light source is used for emitting vacuum ultraviolet light radiation; the vacuum ultraviolet monochrome beam splitter is used for carrying out beam-splitting processingon incident vacuum ultraviolet light radiation and then outputting light radiation with a predetermined wavelength; the vacuum ultraviolet uniformizing device is used for carrying out uniform processing on the output light radiation with the predetermined wavelength; the switching device is used for carrying out switching between alignment of the reference radiation luminance meter with the vacuum ultraviolet uniformizing device and alignment of a to-be-calibrated radiometer with the vacuum ultraviolet uniformizing device; the controller is used for calculating spectral radiation luminance responsivity of the to-be-calibrated radiometer according to radiation luminance values measured by the reference radiation luminance meter and the to-be-calibrated radiometer separately; and the oil-free vacuum chamber provides a vacuum environment, thereby accurately obtaining the spectral radiation luminance responsivity of the to-be-calibrated radiometer.
Owner:BEIJING ZHENXING METROLOGY & TEST INST

Initially baked tobacco formula threshing optimized design method based on genetic algorithm

The invention discloses an initially baked tobacco formula threshing optimized design method based on a genetic algorithm. The initially baked tobacco formula threshing optimized design method comprises the following steps of: selecting n initially baked tobaccos from a tobacco database, and reading the inventory of the n initially baked tobaccos and index values of m chemical index items; setting a target value of a cigarette formed by the current formula threshing; taking the n initially baked tobaccos as n genes, forming a chromosome by randomly entitling different inventory using proportions to each gene, and constructing an initial group by a plurality of different chromosomes by the same method; calculating j chromosomes with high adaptability by using the initial group according to the genetic algorithm, and judging whether the j chromosomes with high adaptability meet a set target value; and outputting the chromosomes which meet the target value and serve as an initially baked tobacco formula. The genetic algorithm is applied to a formula threshing scheme for the initially baked tobaccos, so that the formula threshing scheme which closely meets the demand of a user can be obtained, and the design cost and the design time are saved.
Owner:OCEAN UNIV OF CHINA +1

A Determination Method of Performance Index of Pressure Atomization Nozzle

The invention belongs to the technical field of aero-engine fuel nozzle design and especially relates to a method for determining the performance indexes of a pressure atomizing nozzle. The method includes the steps of a, determining an auxiliary spray cone angle, to be more specific, selecting a plurality of nozzles of different angles in a range of 50-80 degrees, and performing a flameout experiment under a ground idle state to select an optimal value; b, determining a main spray cone angle, to be more specific, calculating the main spray cone angle according to the size and position of a recirculation zone in a flame cylinder; c, determining auxiliary nozzle flow; d, determining main nozzle flow according to the principle that Fn / delta P of an engine in the maximum state is smaller than 2.5 and the Fn / delta P of the engine in a cruising state is smaller than 13; e, determining nozzle atomizing quality; f, determining flow distribution nonuniformity, which is smaller than 1.5-2.0%, of a master fuel pipe. The method has the advantages that the performance indexes are determined step by step by reasonable experiments and calculating methods, repetition and loss during research and development are reduced, and research and development cycle is shortened.
Owner:TIANJIN CHENGLI AVIATION TECH CO LTD
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