852results about How to "Break through limitations" patented technology

The invention relates to a method and system for establishing a multilayer oil pool inter-well connectivity model. The multilayer oil pool inter-well connectivity model capable of simulating oil and water dynamic states is established oriented to the limitation that by means of a current connectivity model, only the dynamic change of production liquid can be predicted, the dynamic states of the oil phase and the water phase cannot be calculated respectively, and connectivity analysis cannot be carried out layer by layer. According to the model, an oil pool system is layered and scattered into a series of inter-well communication units, matter balance equation calculation is carried out with the inter-well communication units as simulating objects, pressure solving and inter-well flow calculation are achieved, an inter-well saturation degree tracking calculating method is established with the combination of the lead edge boosting theory, and the output dynamic states of oil and water of all layers at well points are obtained; a model parameter inversion method is established in a fitting mode through dynamic states based on a random disturbance approximation method, a projection gradient method and the like. Layered inter-well flow distribution coefficients, single well longitudinal production liquid and production oil splitting coefficients and other information can be obtained in real time, the oil pool plane, the longitudinal oil and water flow relation and the production measure change can be more accurately reflected to guide the practical production of an oil field.

A pedestrian re-identification method based on global and local similarity measure learning comprises the following steps: first, all pedestrian images in a pedestrian re-identification database are preprocessed, and the local features and global features of each pedestrian image are extracted; then, in a training module, the overall similarity between two pedestrian samples is measured based on the local similarity and global similarity between the pedestrian samples, and a measure matrix is learned; and finally, in a test module, the measure matrix learned by the training module is imported to measure the similarity between each pedestrian sample to be measured and pedestrian samples in the database, sorting is performed according to the similarity, and the pedestrian samples to be measured are identified.

The invention discloses a conducting-stirring friction hybrid heat source welding method and a piece of equipment, wherein, in stirring friction welding, a stir head and a workpiece are simultaneously insulated from the main body of a welding machine, the clamp of a fixed workpiece and a worktable, current is galvanized in the weld seam direction of the workpiece, the current and the weld seam through which the current flows produce resistance heat with the contact resistance of a friction stirring welding area, and the resistance heat together with stirring friction heat forms the hybrid heat source of the stirring friction welding. The method and the equipment of the invention have the following remarkable effects: 1. the limitation of the stirring friction welding on welding materials is broken through, leading the stirring friction welding to be used for welding such structural materials as black ferrous metals, superalloy, and the like; 2. the service life of the stir head can be improved; and 3. welding speed and welding quality can be further improved, thus improving the mechanical property of a welding joint. The method and the equipment of the invention can be used for the stirring friction welding, the preheating before welding, and the postweld heat treatment of such structural materials as carbon steel, stainless steel, and superalloy, etc.

The invention discloses a fingerprint payment certificate server, a fingerprint payment method and a system thereof. The server comprises a prepositioned server, which receives packaged data transmitted by a payment terminal which transacts based on fingerprint information, and comprises a preprocessing unit, a memory and a transaction server, wherein the preprocessing unit unpacks and deciphers the packaged data to obtain fingerprint information data and transaction data; the memory prestores user identity information including pre-acquired user fingerprint characteristic data; the transaction server is in signal connection with the prepositioned server and the memory, and certifies the user identity by comparing the fingerprint information data acquired by the prepositioned server with the fingerprint characteristic data of a corresponding user in the memory; and when the user identity is certified successfully, the transaction data is transmitted to a bank server. The fingerprint payment certificate server plays a role of a third party authenticator between the user and the bank, avoids the problem that impartiality deficiency of proof existing in unilateral certificate, and improves the convenience for user payment at the same time.

The invention discloses an advertising board convenient to move and install. The advertising board comprises a fixed box and an advertising board body, wherein a first motor is fixedly connected to the top of the fixed box via a support frame; an output shaft of the first motor runs through the fixed box and extends into the fixed box; a first bevel gear is fixedly connected to the output shaft ofthe first motor via a shaft coupling; second bevel gears are meshed at two sides of the surface of the first bevel gear, and threaded rods are fixedly connected to the middles of the second bevel gears; movable blocks are connected to the surfaces of the threaded rods via screw threads; and rotary rods are rotatably connected to the surfaces of the movable blocks via movable pieces. The inventionrelates to the technical field of advertisement. With the application of the advertising board convenient to move and install provided by the invention, problems of an existing advertising board which is inconvenient to carry and move can be solved; and the advertising board device can greatly facilitate people in safe using, avoid inconvenience to the people, improve working efficiency of the people and reduce workload of the people.

The invention discloses a spectral image-based meat quality visual non-contact detection method. By means of spatial distribution information and spectral characteristic information which are contained in a spectral image and reflect the characteristics of an object to be detected, multiple indexes of meat quality (such as water content, water activity, volatile basic nitrogen, meat color, microorganism counts, acid value and pH value) are respectively or comprehensively evaluated, and evaluation results are given in an image mode according to spatial distribution conditions of specific indexes in the object to be detected. The method can be used for quick and non-contact inspection of meat production, processing, storage, transportation and marketing links, inspection results are accurate and objective, and the expression mode is intuitive, so that a guarantee means for supervising the production and marketing quality safety of meat is provided.

The invention discloses a commodity recommendation method based on model matching, which mainly comprises the following steps of: establishing a commodity description model, wherein the commodity description model comprises two parts, i.e. a character introduction and description part and an attribute information part; establishing a user preference model, ensuring that the user preference model is based on the commodity description model and fusing a plurality of commodity description models through the user preference model; calculating the similarity between the commodity description model and the user preference model; and ranking according to the similarity to recommend to a user. According to the commodity recommendation method, the potential interest of the user can be fully explored, and the accuracy of commodity recommendation can be realized.

The invention provides a multi-process 3D (three dimensional) printing method. A three-dimensional model is subjected to hierarchical processing to obtain the material composition and profile information of each layer of cross section; different printing mechanisms are selected according to different material composition information; in a powder distributing mechanism, a gradient material printing mechanism and a microdroplet ink jet printing head mechanism, different powder or liquid materials are respectively loaded into corresponding material boxes according to different printing regions and different printing materials, and the materials are evenly printed on the corresponding printing regions in sequence, so the integrated printing of mixed material objects of different kinds and structures is realized by adopting multiple materials and multiple technologies. The multi-process 3D printing method has the advantages that the limitation of the existing 3D printing that a single technology is adopted and only single-material homogeneous printing is realized is overcome; the printing of a complex structure is easily realized; and convenience is provided for printing a 3D object.

The invention discloses a visualization testing method and device for a granular material mechanics experiment. The method comprises the following steps: putting luminous millimeter-sized granules into a visualization loading device capable of applying a compression / shear load; starting a light source to propagate light emitted by the light source along a polarizer, a quarter-wave plate, the visualization loading device, a quarter-wave plate, an analyzer and a camera in sequence; and applying the compression load, the shear load or the combination of the compression load and the shear load to the granules according to corresponding experimental requirements. In a loading process, fringes which are alternately dark and bright are formed in an image acquired by the camera; according to a stress-optical law, the size change of the stresses at different positions in the millimeter-sized granules can be directly observed through the density of the fringes or the light intensity; and after the image acquired by the camera is processed, the stress distribution in granular media can be identified and metered, and the contact stress between the granules, the thickness and angle of shear bands in the granular media and the distribution and trend of mechanical chains can be visualized.

The invention discloses a rolling bearing weak fault feature early extraction method. The method includes the following steps that: a sensor is utilized to pick up the vibration signals of a rolling bearing under an operating condition, and the vibration signals are adopted as signals to be analyzed; with the spectrum auto-correlation feature factor SACFF of a spectrum auto-correlation function adopted as a fitness function, a genetic algorithm is adopted to optimally search variation modal decomposition parameters; parameter combinations which are optimally searched by the genetic algorithm are selected to perform VMD (variation modal decomposition) processing on the signals to be analyzed, so that finite bandwidth intrinsic mode functions are obtained; components corresponding to local maximum feature factors of spectrum autocorrelation are selected to be subjected to spectrum autocorrelation analysis, so that a spectrum autocorrelation function graph can be obtained; and if the fault feature frequency in the spectrum autocorrelation function graph or the peak value of the frequency multiplication thereof reaches a set threshold value, it is indicated that an early weak fault occurs on the rolling bearing. According to the method of the invention, the respective advantages of the VMD and the spectrum autocorrelation analysis are combined, and therefore, limitations of the spectrum autocorrelation analysis method in extracting the weak fault feature information of the bearing can be broken through, and the earlier diagnosis of the weak fault of the rolling bearing can be realized.

The invention relates to a saline-alkali soil conditioner and a preparation method thereof. The saline-alkali soil conditioner is constituted by glacial acetic acid, citric acid, oxalic acid and tap water. The preparation method comprises the following steps: weighing the tap water, citric acid and oxalic acid according to weight ratio and placing in a reaction kettle; starting stirring, warming up to 40 DEG C to 60 DEG C for 0.5 hour to 1 hour; weighing the glacial acetic acid according to weight ratio and placing in the reaction kettle; stirring, warming up to 50 DEG C to 60 DEG C for 0.5 hour to 1 hour; cooling down to 25 DEG C to 40 DEG C; carrying out measurement packaging after the samplings pass the inspection to obtain the finished product of saline-alkali soil conditioner. The saline-alkali soil conditioner in the invention is simple in manufacturing process, low in raw materials and production cost, and can realize the improvement of soil physicochemical property, inhibit theascending of saline matter and neutralizing the alkalinity of the soil.

The invention belongs to the technical field of biology, and discloses a polypeptide containing two chimeric antigen receptor structures, nucleic acid for coding the polypeptide, a modified T lymphocyte, and a preparation method and application of the T lymphocyte. The polypeptide provided by the invention contains the two chimeric antigen receptor (CAR) structures, wherein one chimeric antigen receptor structure specifically targets a tumor cell, and the other one specifically targets a normal B lymphocyte, so that a CAR-T cell is effectively amplified through recognizing the B lymphocyte ofa blood circulation system, and more CAR-T cells arrive at a solid tumor part so as to specifically kill the tumor cell for improving a treatment effect on the solid tumor. The polypeptide further comprises an ScFv structure of an anti-PD-L1 monoclonal antibody, and the CAR-T cells can simultaneously secrete a PD-L1 monoclonal antibody which interdicts an immunosuppressive action medicated by a PD1 / PDL1 signal pathway and T cell failure, so that the treatment effect on the solid tumor is improved, the functional activity of immune cells in vivo is prolonged at the same time, and finally the tumor recurrence is retarded and even avoided.

The invention discloses a titanium alloy and a preparing method thereof, the titanium alloy comprises chemical components in percent by weight: 33wt%-40wt% of Nb, 0.3wt%-0.5wt% of O and the balance of Ti; or the alloy comprises the components in percentage by weight: 33wt%-40wt% of Nb, 0.3wt%-0.5wt% of O, one or more of following element groups: 0-3wt% of V, 0-1wt% of Mo, 0-3wt% of Al, 0-3wt% of Sn and 0-4wt% of Zr and the balance of Ti. Components of the alloy in the invention are optimally designed, low-stacking fault energy large-sized ultra-fine grain / nanocrystalline titanium alloy can be obtained by smelting, thermal processing and cold processing, the titanium alloy has excellent match of strength and plasticity, the preparing method breaks through limitation of preparing of a titanium alloy nano-material in the prior art, processing control difficulty and manufacturing cost are reduced, the production efficiency is improved and the titanium alloy and preparing method have a broad application prospect.

The invention discloses a machine-vision-based raster stereo image flat printer for realizing stereo printing on a raster plate matrix. The printer comprises a printing system, a visual sense measuring system and an error correction processing system, wherein the visual sense measuring system is used for obtaining the image of a raster plate on the printing system and detecting a position and an angle; the error correction processing system calculates the position deviation of the raster plate and the printed image according to the position and the angle and controls the printing system to perform corresponding position error correction according to the deviation so that a stereo image can be obtained by printing at an accurate position. By using the printer and the method provided by the invention, the problems of low printing precision, complicated operation, difficult automation realization and the like in a conventional raster stereo image printing process can be overcome, a method of machine visual sense measuring positioning and mechanical and visual sense auxiliary error correction is adopted so that the stereo image printing based on the raster plate can be realized, the material adaptability can be improved, the operation is convenient, and the printing precision is high.

The invention provides a non-contact control method for controlling a five-finger bionic manipulator through learning hand motion gestures and belongs to the field of intelligent control. According to the method, a three-dimensional hand modeling method with adaptivity is proposed, motion gestures of all joint points of a hand of a control worker are tracked according to a three-dimensional hand model, and a corresponding relationship between the motion gestures of the hand and action commands of the manipulator is established with a mapping algorithm, so that the control worker controls the five-finger manipulator in a natural mode. Under the condition of utilization of RGB-D images, the three-dimensional hand model is established to describe pose parameters of the joints of the hand, an improved APSO (adaptive particle swarm optimization) algorithm is proposed to solve the pose parameters, the rate of convergence of solution of high-dimensional parameters is effectively increased, limitation of wearable devices such as data gloves and the like is avoided, and the defects that a conventional control method based on a sensor can only acquires poses of part of joints of the hand and cannot be applicable to a bionic multi-fingered hand with high degree of freedom are overcome.

The invention relates to a fire box hidden door structure which comprises a U-type rotating shaft transmission device, two sector tri-petal type hinge devices and hyperbolic door guiding and limiting devices. The two sector tri-petal type hinge devices are arranged on the two sides of the U-type rotating shaft transmission device through a rotating shaft respectively to achieve eccentric moving and hyperbolic opening of a door. The hyperbolic door guiding and limiting devices comprise two wedge-shaped fixing blocks, wherein one hyperbolic door guiding and limiting device is fixed between the fire box hidden door and the rotating shaft, the hyperbolic door guiding and limiting device stops rotating when the door is opened to 180 degrees for the second time, and the other hyperbolic door guiding and limiting device is fixed inside the U-type rotating shaft transmission device to control a door leaf not to collide with an outer fade facing when the door leaf is opened for the first time. The fire box hidden door structure widens the applied range of a fire box, eccentric moving and hyperbolic opening are achieved, and thus the door leaf can be opened to 180 degrees.

An auto-lift environment-friendly material platform for planting of submerged plants comprises a planting platform and a fixture for fixing the planting platform and is characterized in that the planting platform comprises a frame and a bearing face, a diatomite layer serving as a growth medium and a palm fiber braid upper layer with reserved planting holes are arranged on the bearing face sequentially, the frame is provided with a light sensor for sensing underground light intensity, the light sensor is connected with a control system that controls a lifting device, and the planting platform is automatically liftably arranged on the fixture through the lifting device. The auto-lift environment-friendly material platform for planting of submerged plants is simple in structure and made of environment-friendly material, breaks the manual operation limits, is automatically lifted through the light sensor, allows submerged plants to be planted effectively under poor water transparency, and is low in cost, good in treatment effect and convenient to maintain.

The invention relates to an electric arc additive manufacturing method of a conformal cooling passage with a circular cross section. According to the method, the inner surface of a rough machined moldis used as an additive datum plane, a consumable electrode inert gas protection electric arc additive process is adopted, an internal conformal passage with a circular cross section is manufactured through a specific conformal additive path and a specific angle, a cooling medium flows in the passage, and a flowing direction is parallel to the inner surface of a mold cavity. The method comprises the following steps of S1, designing a structure of a three-dimensional conformal passage with the circular cross section; S2, partitioning the passage structure, and milling the datum plane of a basebody; S3, carrying out additive manufacturing on the lower half part of the passage; S4, carrying out additive manufacturing on an inner wall structure and other structures of the upper half part of the passage; and S5, machining the inner surface of the mold cavity. The electric arc additive manufacturing method of the conformal cooling passage with the circular cross section provided by the invention adopts a low-cost electric arc additive manufacturing process technology for realizing high-efficient manufacturing of the complicated conformal cooling passage of the large-size mold, and has the characteristics that raw materials are saved, the manufacturing cost is reduced, the mold cooling efficiency is high, the cooling uniformity is good, and the like.

The invention discloses a drawing architectural element identification method and system based on machine learning. The drawing architectural element identification method is based on the method of combining a rule and machine learning. Rule matching and mathematical modeling are conducted on vector diagram metainformation obtained from a drawing, the feature distribution law of an architectural element in the drawing is strictly and accurately analyzed through the training process, the data sets of a primitive database, an architectural element rule base and an architectural element feature base are formed, the architectural element identification method in the probability sense is obtained, and the recognition rate of an architectural element and a property parameter of the architectural element are further improved. The drawing architectural element identification system based on machine learning tries to break through the limitation of an existing drawing identification method, provides an efficient drawing analysis and identification tool for a metro design and construction department, and has the three advantages of being high in precision ratio, identification efficiency and intelligent degree.

The invention relates to a non-contact vital sign data monitoring system and a non-contact vital sign data monitoring method. The monitoring system comprises a video acquisition unit, an image processing unit, a temperature monitoring unit and an output unit. Preferably, vital signs include temperature and / or respiratory frequency; preferably, the video acquisition unit and the output units are intelligent terminals, and the image processing unit is an intelligent terminal with a photographing function; and particularly, a monitoring function of vital sign data is achieved through a smart phone or a tablet personal computer with the photographing function and the temperature monitoring unit. Compared with a traditional vital sign data acquisition system, the system is free of dependence on instrument contact, high in portability, accuracy and sensitivity and extremely wide in application range.

The invention relates to a production method of a self-repairing super-hydrophobic flame retardation coat layer, and belongs to the technical filed of production self-repairing super-hydrophobic flame retardation coat layers. The method comprises the following steps: a self-extinguishing flame retardation coat layer is made through a simple technology, and a self-repairing super-hydrophobic film is used to protect the flame retardation function easily destroyed by water. The method comprises the steps of substrate processing, solution preparation and three-layer film assembling. The substrate is not restricted by the size or shape of a fabric, and is suitable for various common fabrics. Terylene is modified with the self-repairing self-hydrophobic flame retardation coat layer, only 10cm of the fabric is blackened after the obtained fabric is ignited and burns for 12s, and the remaining portion of the fabric is completely not influenced by flame. The contact angle of the modified fabric is 160DEG, and the super-hydrophobicity can be rapidly restored after being destroyed. The method used in the invention has simple program, has the advantages of long acting and energy saving, can be used in various fabrics, and is expected to be widely applied in the fields of packaging, home finishing and buildings.

The invention discloses a dynamic phasor modeling method for a current converter of a high-voltage direct-current transmission system, which is applicable to various operating conditions and fault conditions. The method comprises: calculating the actual trigger angle, the actual phase conversion angle and the actual delay flow angle of various converter valves in the current converter according to first dynamic phasor and direct-current zero-order dynamic phasor of the voltage between phases of a converter bus; calculating the three-phase voltage switch function and the three-phase current switch function according to the actual trigger angle, the actual phase conversion angle and the actual delay flow angle of the various converter valves; and establishing a dynamic phasor model according to the three-phase voltage switch function and the three-phase current switch function. The method can realize the establishment of the dynamic phasor model of the current converter under various operating conditions and fault conditions of AC, reduces the calculation amount, has the precision capable of meeting the requirement of engineering application, and can be applied to simulation analysis of dynamic characteristics of an AC system in an AC and DC compound system under various normal operating conditions and fault conditions.

The present invention provides an electroheating pipe superheated steam boiler, including boiler self-body for producing saturated steam and superheater for producing superheated steam, and the heating elements of boiler self-body and superheater are single-end single-outlet type electroheating pipes which are connected by adopting V-shaped mode, and the outer shell of the electroheating pipe and outet shell of boiler self-body are used as neutral point, and can be reliably grounded. Said invention overcomes the defect of traditional electrothermal boiler which can not produce superheated steam.

The invention relates to a missile-borne anti-interference-antenna automatic test system and a test method. The automatic test system comprises an interference antenna array, an interference source, a switch matrix, a test rotary table, a rotary table controller, a calibration reference antenna, a frequency spectrum analyzer, a navigation receiver and a monitoring station. The interference antenna array comprises a plurality of antennas. The antennas are three-dimensionally distributed in a mouse cage shape. The test rotary table is arranged on a center of the interference antenna array. An anti-interference antenna is arranged on a rotating disk of the test rotary table and is rotated along with the rotating disk. And a height of the anti-interference antenna is controllable. Interferences are exerted from every direction which includes a backward direction of a tested antenna, and a limitation that the interferences are traditionally exerted only from a forward direction is broken through so that the test system can simulate a real situation. A statistics method is used, positioning precision is introduced and is taken as a criterion, and validity and integrity of the test are increased.

The present invention is the production process of aluminum template with nano holes, and is especially the combined anode oxidation and ion bombardment process of producing aluminum template with nano holes in high density and high order. The technological process includes annealing aluminum foil, cleaning, electrochemical polishing, anode oxidation in water solution of oxidizing acid, such as sulfuric acid, oxalic acid, phosphoric acid, to form alumina film, ion bombardment to form holes in the film physically, water rinsing and stoving. The technological process is simple and low in cost, and the holes are densely distributed in certain order and have controllable shape and size of several nano to 100 nano. The said template may be used widely in direct assembling of nano device except its traditional industrial application.

The invention provides a vegetable oil modified asphalt composite and a preparation method thereof. The vegetable oil modified asphalt composite comprises the following materials with content based on the total weight of vegetable oil modified asphalt in percentage by weight: 5%-30% of vegetable oil, 65%-80% of petroleum asphalt and 5%-15% at least one of natural asphalt and a high-molecular material or a mixture of the natural asphalt and the high-molecular material, wherein the mass ratio of the natural asphalt and the high-molecular material in the mixture of the natural asphalt and the high-molecular material is (0.5:1)-(4.5:1).

The invention provides a double-column rotary corrosive-wear testing machine, comprising a testing stand, which is provided with two columns, wherein a crossbeam is arranged on the columns and a through hole is formed in the center of the crossbeam; a crossbeam elevating and driving mechanism, which is arranged on the test stand and connected with the crossbeam; a testing drum, which is arranged on the center of the test stand, wherein an annular temperature control / cooling pipeline is arranged in the lower part of the testing drum; a transmission shaft, which passes through and is arranged in the through hole in the crossbeam; a sample clamping disc, which is fixed at the lower end of the transmission shaft, wherein the upper end surface of the sample clamping disc is provided with an annular groove, and the outer sides of the annular groove are provided with installation through holes; working electrodes, i.e., to-be-tested samples, which are inserted into the installation through holes; an auxiliary electrode, i.e., an annular platinum wire, which is arranged in the annular groove of the sample clamping disc; reference electrodes, which are uniformly distributed on the sample clamping disc at positions corresponding to the working electrodes; and a dynamic connection pool, which comprises annular dovetail cups, wherein the annular dovetail cups sleeve the upper part of the transmission shaft, leading-out circular rings are arranged at the bottom of the inner sides of the annular dovetail cups, the outer sides of the leading-out circular rings are provided with wiring copper columns penetrating the bottoms of the cups, the interior of each annular dovetail cup is provided with an electric needle, the lower ends of the electric needles are certain distance away from the leading-out circular rings, and the working electrodes, the auxiliary electrode and the reference electrodes are connected with the dynamic connection pool through leads.

The invention provides a safe transfer method and system of a wide area network trusted virtual machine. The method includes the following steps that: S1, two data centers are deployed in a wide area network, and two layers of bride-pattern virtual private networks are constructed between the two data centers; S2, a virtual machine image file is split into a template and user private data, and hardware resources of each data center are virtualized, so that services can be provided for a user in the form of a virtual machine; S3, a trusted virtual machine which supports a vTPM is created and started between the two data centers through deploying a virtual trusted platform, and a vTPM example bound with the trusted virtual machine is generated, and TPM driving is loaded; S4, a source end and a destination end are configured according to the vTPM example, and then, the memory, CPU state, disk and vTPM state of the trusted virtual machine are transferred at the source end, and are restored at the destination end, and therefore, synchronous transfer of the vTPM and the virtual machine can be realized.

The invention belongs to the technical field of road safety evaluation, and discloses a road sight distance detection method and device based on a visual image. The method comprises the steps: building the road sight distance detection device which comprises an image obtaining unit, an image coordinate determining unit, a road slope information calculation unit, an inverse perspective processing unit, a road length determining unit and a driving sight distance calculation unit; obtaining a driving image, driving parameters, and photographing parameters; continuously determining coordinates (c, r) of a lane in the driving image; continuously carrying out the inverse perspective transformation processing of the driving image according to the photographing parameters, and converting the coordinates (c, r) of the lane into inverse perspective lane coordinates (X, Z); continuously determining the length L<left> of a left road in front of a vehicle and the length L<right> of a right road in front of the vehicle according to the inverse perspective lane coordinates (X, Z); and finally determining a driving sight distance L according to the position of the vehicle on the lane, the length L<left> of the left road in front of the vehicle and the length L<right> of the right road in front of the vehicle.