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1907results about How to "Meet processing needs" patented technology

Digital image correction method for continuous variable-focal-length optical imaging system

The invention discloses a digital image correction method for a continuous variable-focal-length optical imaging system. The digital image correction method comprises the steps of acquiring planar template images which are photographed by an image camera in a plurality of discrete focal lengths, performing off-line calibration on a distortion parameter which corresponds with each focal length of a variable-focal-length lens; performing curve fitting on the distortion parameter which corresponds with each focal length for obtaining a fitting formula or establishing a distortion parameter lookup table; according to the actual operation focal length of the image camera, obtaining a lens distortion parameter which corresponds with the actual operation focal length through the distortion parameter lookup table or calculation by the fitting formula; and constructing a projection conversion relationship from an image camera coordinate system to a map coordinate system according to position gesture data and the lens distortion parameter in imaging of the image camera, and performing resampling on the pixel brightness value after coordinate conversion for obtaining an orthographic projection image after correction on the squint deformation and lens distortion. The digital image correction method realizes a purpose of simultaneous correction for squint trapezoidal distortion and variable-focal-length nonlinear distortion in the variable-focal-length imaging system.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

Vertical type method for processing nozzle cooling channel of liquid-propel land rocket engine

The invention relates to a method for vertically processing a cooling passage of a liquid rocket engine thrust jet, which belongs to the processing method field of liquid rocket engine thrust jet. In the invention, the thrust jet adopts a vertical clamp; a single-point laser sensor scans bus bars strip by strip to acquire the actual profile of the thrust jet and a sampled data set to reconstruct the bus bars of the thrust jet strip by strip; the buses of the sampled data set are smoothed strip by strip to acquire a thrust jet smoothed data set; the data set of all the bus bars are compressed to acquire a compressed data set; and a cubic spline is used for performing interpolation to approximate the actual bus bars of the thrust jet. The milling tool position is calculated by dual milling head for symmetrical milling and high speed back chipping. The method realizes the integration of measurement and processing, finishes the treatments of profile measurement, milling groove and back chipping by one clamping, can satisfy the processing requirements on different physical dimensions and different bus bar linetypes, has high processing efficiency and good consistency, and realizes the digital processing with high efficiency and high precision of the cooling passage of the liquid rocket engine thrust jet.
Owner:DALIAN UNIV OF TECH

Mechanical processing equipment capable of realizing any-angle cutting

The invention discloses mechanical processing equipment capable of realizing any-angle cutting. The mechanical processing equipment comprises a movable supporting base, a vertical frame, a beam, a slide sleeve, a mounting plate, a lifting motor, a lifting lead screw and a cutting head, wherein the movable supporting base is mounted on the rack; the vertical frame is vertically welded on the movable supporting base; a slide slot is formed in the vertical frame; the slide sleeve is in sliding connection on the vertical frame through the slide slot; a threaded hole in the vertical direction is formed in the slide sleeve; the beam is horizontally welded at one side of the slide sleeve; the mounting plate is fixedly connected on the top of the vertical frame; the upper end and the lower end of the lifting lead screw are separately connected on the mounting plate and the movable supporting base through bearing bases; the lifting lead screw is connected with the slide sleeve through threads; the lifting motor is fixedly connected on the mounting plate; the output shaft of the lifting motor is fixedly connected with the lifting lead screw; and the cutting head is mounted at the top end of the beam. The mechanical processing equipment has the advantages of being simple in structure, stable in operation, high in precision, capable of reducing production cost and the like.
Owner:江苏汉达机械有限公司

Outrigger rotating type independently-driven automatic sewing equipment

The invention relates to outrigger rotating type independently-driven automatic sewing equipment. The equipment comprises an upper machine head and a lower machine head which are independently driven respectively, wherein the upper machine head comprises a machine head lifting assembly, a machine head rotating assembly and a machine head assembly, the machine head rotating assembly is fixedly arranged on the machine head lifting assembly, the machine head assembly is fixedly arranged at the lower part of the machine head rotating assembly, and the upper machine head can rise / fall and can also adaptively rotate synchronously with the lower machine head; the lower machine head comprises a bottom line rotating assembly and a bottom shuttling system, the bottom shuttling system is arranged at the upper part of the bottom line rotating assembly, and the bottom line rotating assembly drives the bottom shuttling system to rotate in 360 degrees in any direction; each of the upper and lower machine heads is further provided with a servo-control system, and the servo-control systems control the steering of a bottom line rotating shaft and control the bottom line rotating shaft and machine head rotating shafts to correspond to each other and be in the same rotating speed. The equipment has the advantages that various machining needs can be met, the scope of application is greatly enlarged, and the function is powerful; the stability is high, the failure rate is low, and the maintenance is simple and convenient.
Owner:浙江锦上智控科技有限公司

Method for manufacturing circuit board layer-adding structure

The invention provides a method for manufacturing a circuit board layer-adding structure. Manufacture of a fine circuit with the width smaller than 50 micrometers is achieved, use of insulation materials with high cost is avoided, so that the process cost of a substrate is reduced, and therefore cost of the substrate is reduced. The method comprises the following steps that (1) an inner-layer circuit is manufactured; (2) copper foil and prepreg are pressed and solidified; (3) laser drilling is conducted; (4) smear removal is conducted; (5) surface copper is removed; (6) plasma activating treatment is conducted on the surface of a circuit board; (7) electroless copper plating is conducted; (8) photoetching is conducted; (9) electroplating is conducted; (10) membrane stripping is conducted; (11) flash etching is conduced. According to the method, generally-used medium material PP is adopted; through the improvement of the SAP technical method, the chemical activity of the surface of the PP is improved, electroless copper plating is directly conducted on the surface of the PP, the binding force of an electroless copper plating layer is improved, so that the SAP machining requirements of the fine circuit are satisfied, and meanwhile the technical cost of the substrate is reduced to a great extent.
Owner:NAT CENT FOR ADVANCED PACKAGING CO LTD

Rotary oil-spray-coating drying device for bearing machining

The invention discloses a spraying and oiling drying device for rotary bearing processing, which comprises a support seat, support legs are connected to both sides of the lower end of the support seat, a reinforcing plate is connected between the lower ends of the supporting legs, and a driving motor is connected to the right side of the upper end of the reinforcing plate , the upper end of the driving motor is connected with the driving shaft, the upper end of the driving shaft is connected with the driving gear, the outer side of the driving gear is evenly connected with the tooth set, the left end of the driving gear is meshed with the driven gear, the middle part of the driven gear is connected with the rotating shaft, and the upper end of the rotating shaft is connected with On the workbench, the oil storage tank is connected to the upper left side of the reinforcement plate, the oil outlet pipe is connected to the upper left side of the oil storage tank, the oil pump is connected to the upper end of the oil outlet pipe, the oil injection pipe is connected to the upper end of the oil pump, and the oil return tank is connected to the middle part of the lower end of the support seat. A sealing plate is arranged inside the oil tank, and an oil return pipe is connected to the lower end of the oil return tank. The invention realizes the rotary spray oiling of bearings, reduces the cost of oil spraying, and meets the processing needs of large-scale bearing spray oiling.
Owner:孙小荣

Process for optimizing ordering processing for multiple affairs

The invention provides an optimization sequencing processing method for multiple transactions. The optimization sequencing processing method includes the following steps: identification information is endowed to each transaction according to the time when each transaction sends a request; each transaction is respectively fallen under a primary queue or a secondary queue in a current transaction processing end according to the class information of each transaction; when the transaction processing end is in an idle condition, whether the latency time of a first transaction sorted according to the time in the primary queue is larger than the time threshold value of the primary queue is interpreted; if the latency time in the primary queue is larger than the time threshold value of the primary queue, the transaction processing end processes the first transaction in the primary queue, and if not, whether the latency time of the first transaction sorted according to the time in the secondary queue is larger than the time threshold value of the secondary queue is further judged; if the latency time in the secondary queue is larger than the time threshold value of the secondary queue, the transaction processing end processes the first transaction in the secondary queue, and if not, the transaction processing end processes the first transaction in the primary queue. The invention can search out the transaction with the highest PRI from the queue by logical calculus in a real time way.
Owner:CHINA CONSTRUCTION BANK

Electrocardiogram signal sparse decompression and compression system based on concise common dictionary base

The invention relates to an electrocardiogram signal sparse decompression and compression system based on a concise common dictionary base. The electrocardiogram signal sparse decompression and compression system based on the concise common dictionary base comprises a concise common dictionary base offline training module, an electrocardiogram signal online compression module and an electrocardiogram signal reconstruction module, wherein the electrocardiogram signal online compression module is connected with the electrocardiogram signal reconstruction module. The concise common dictionary base offline training module is used for integrating multisource electrocardiogram signal training samples offline to construct a common training sample set, segmenting sample signals, discretizing a Gabor function to form a super complete Gabor dictionary, sparsely decomposing the segmented signals by the Gabor dictionary to obtain a primary common dictionary base, and simplifying the dictionary by clustering algorithm to obtain a concise common dictionary base. Based on the concise common dictionary base, the electrocardiogram signal online compression module is used for sparely decomposing the signals. Based on the concise common dictionary base, signal segments of the electrocardiogram signals are reconstructed to restore complete signals and display signal waveform. The electrocardiogram signal sparse decompression and compression system based on the concise common dictionary base is suitable for implementation on embedded or mobile hardware platforms with resources limited.
Owner:DONGHUA UNIV

High-efficient circulating vertical flow constructed wetland and device suitable for sewage decentralized treatment

The invention belongs to the field of sewage ecological treatment, and the purpose is to provide a device and a method for sewage decentralized treatment in circulating vertical flow constructed wetlands. The invention comprises the following aspects: 1) the high-efficient circulating vertical flow constructed wetland system comprises three main components of a vertical flow constructed wetland, a circulating water tank, and a reinforced adsorption column; 2) the operation modes comprise an intermittent mode and a continuous mode. Fillers of the constructed wetland are proportional compositions of several fillers which are low in price and high in adsorption capacities for nitrogen and phosphorus; plants which have strong durability against pollution and have landscape value (thalia dealbata or day lily) or economic value (hybrid pennisetum) are planted on the wetland surface. The invention adopts the high-efficient filler composition to reinforce nitrogen and phosphorus adsorption; effluent backflow increases the dissolved oxygen inside the vertical flow constructed wetland, and enhances the nitration capability of microbes in the wetland; the denitrification capability is enhanced; the contact time of sewage and the fillers is increased; and the removal of phosphorus is enhanced. Series-parallel combinations can be selected flexibly with respect to different sewage types, and the applicability is strong.
Owner:INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI

Data processing method and device of real-time computing platform

The invention discloses a data processing method and device of a real-time computing platform. The method includes the steps that a computing task is received, and configuration information of the computing task is read; according to data source information in the configuration information, a data source configured by the computing task is determined; multiple receivers are dispatched to obtain to-be-processed data from the data source and store the to-be-processed data; according to a processing rule in the configuration information, the to-be-read data is read from the receivers for corresponding processing. The data processing process is conducted according to the configuration information of the computing task received by the real-time computing platform, the data source configured by the computing task is determined, the receivers are dispatched to obtain to-be-processed data from the data source and store the to-be-processed data, and the to-be-processed data is read from the receivers and processed. By means of the scheme, the process is equivalent to the process that multiple independent processes are conducted in parallel to obtain the to-be-processed data from the data source and wait for processing, data throughput of the real-time computing platform is effectively improved, and the big data processing requirement is met.
Owner:BEIJING QIHOO TECH CO LTD +1

Novel functional flexible clamp and application method thereof

The invention relates to a novel functional flexible clamp and an application method thereof. The clamp is characterized in that the clamp comprises a positioning and clamping groove which is used for positioning and clamping parts, a cleaning and recycling groove which is used for cleaning cutting dust and recycling magneto-rheological liquid and a clamp base; the clamp base is used for fixedly installing the positioning and clamping groove and the cleaning and recycling groove, fixed connections between the clamp and all types of machine tool platforms are achieved, and the clamp base comprises a connection baseplate, electromagnets and permanent magnets; the connection baseplate is of a tabular structure which has a flat bottom surface and a protrusion on the middle of the upper surface, U-shaped grooves which are used for achieving the fixed connections between the clamp and all types of the machine tool platforms of are symmetrically formed in the left side and the right side of the connection baseplate, and a plurality of connection through holes which are used for fixing the positioning and clamping groove and the cleaning and recycling groove are formed in the middle of the connection baseplate; a plurality of grooves are evenly formed in the protrusion on the middle of the upper surface of the connection baseplate in the length and width directions of the connection baseplate, and communication grooves which are used for arranging electromagnet cables are formed among the grooves.
Owner:HEBEI UNIV OF TECH

A high-speed railway foreign matter invasion detection device and method based on FPGA and deep learning

The invention discloses a high-speed railway foreign matter invasion detection device and method based on FPGA and deep learning, the device comprises a video acquisition module, an image storage module, two data processing modules and an early warning feedback module, and the video acquisition module is used for acquiring a high-speed railway track monitoring video in real time; the video processing module I is used for training the marked training set by using an improved ICnet neural network to obtain ICnet neural network weights, completing the construction of a track region segmentation model, and dividing a track region of a video into monitoring regions with different security levels; the video processing module II is used for carrying out target detection on the track area by utilizing a target recognition neural network; and the early warning feedback module is used for continuously transmitting each frame of target and image segmentation result to the FPGA for calculation andanalysis, and performing semantic analysis on intrusion behaviors. According to the invention, foreign matter invasion along the railway can be accurately monitored in real time, the actual needs ofthe railway department are met, and the operation safety of the high-speed railway can be effectively ensured.
Owner:ZHEJIANG UNIV

Polypropylene foamed sheet and preparation method thereof

The invention discloses a polypropylene foamed sheet and a preparation method thereof. The foamed sheet is prepared from raw materials in parts by weight as follows: 100 parts of polyolefin resin, 1-20 parts of a foaming agent, 0.01-10 parts of an assistant crosslinker, 0.15-2 parts of an antioxidant, 0-3 parts of color masterbatch, 1-20 parts of polyolefin elastomers and 0-10 parts of ethylene propylene diene monomer rubber. The method comprises steps as follows: firstly, prepared foamed masterbatch, antioxidant masterbatch, sensitized masterbatch and color masterbatch are mixed with the balance of polypropylene and polyethylene, the polyolefin elastomers and the ethylene propylene diene monomer rubber, a formed sheet is extruded by an extruder, and a foamed substrate is obtained; the foamed substrate is subjected to electronic irradiation crosslinking, and a foamed master sheet is obtained; finally, the foamed master sheet is subjected to free type foaming, and the foamed sheet is obtained. According to the polypropylene foamed sheet and the preparation method thereof, polypropylene with high melt strength and polyethylene are adopted as matrix resin raw materials, formation of appropriate bubble nuclei during growing of bubbles of the foamed sheet is facilitated through irradiation crosslinking, better machinability is realized, and the foamed sheet has good physical and mechanical properties at the high temperature and can meet machining requirements under various conditions.
Owner:HUBEI XIANGYUAN NEW MATERIAL TECH INC

Four-tower mixed ion exchanger resin external separation regeneration method

InactiveCN101780422AAchieve separationRealize the function of advanced treatment (condensate polishing)Ion-exchanger regenerationPower stationIon exchange
The invention relates to a four-tower mixed ion exchanger resin external separation regeneration method. Invalid resin is conveyed to a first tower, i.e. a resin separation tank through a pipeline and a valve from the bottom part of the mixed bed, the invalid resin is cleaned and separated by water power and wind power inside the resin separation tank, the cation and the anion resin is layered, the upper anion resin is conveyed to a second tower, i.e. a anion resin regeneration tank through an upper valve and a pipeline, the lower cation resin is conveyed to a third tower, i.e. a cation regeneration tank through a lower valve and a pipeline, the anion resin is regenerated by excessive alkali liquor inside the second tower, the cation resin is regenerated by excessive acid liquor inside the third tower, after the regeneration, all anion resin is changed to an OH type, all cation resin is changed to an H type, and the anion resin and the cation resin are respectively convened to a fourth tower, i.e. a resin storage tank from the second and the third towers. The method solves the mixed-bed resin external separation and regeneration problems of high-parameter industrial boilers and steam generator condensed water deep treatment (condensed water precise processing) in large-capacity fire plants, nuclear power plants and the like.
Owner:CEEP CO LTD
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