39results about How to "Small application restrictions" patented technology

A beacon arranging and image processing method based on UAN (unmanned aerial vehicle) pose calculation comprises the steps as follows: firstly, machine vision guiding landing of an UAN is designed, under the conditions of guarantee of the image sensitivity and analysis of the field distortion, a beacon structure and arranging method required by vision guiding landing is designed according to a built vision imaging system in combination with poses possibly occurring in the landing process, then, three indexes for measuring algorithm applicability are proposed to evaluate and screen pose solution algorithms for different cooperation beacon configurations according to a designed visual guiding system, and finally, adopted ground cooperation beacons are infrared LEDs which have more stable imaging effect, longer imaging distance and higher imaging precision. The method is simple and feasible and has the low landing field configuration requirement, features can be extracted from near infrared images more conveniently and quickly, the application range of the visual system is enlarged, and all-day and all-weather detection and recognition can be realized; the UAN pose information can be solved precisely.

The invention discloses a phased array close-distance digital imaging method. The method comprises the following steps of: Step 1, determining detection airspace; Step 2, determining spatial coordinates of each antenna unit; Step 3, processing and detecting signals received by each antenna unit; Step 4, determining a detection area of rough imaging detection; Step 5, splitting the detection area,and calculating the coordinates of each grid node; Step 6, determining phase shift amounts of each antenna unit; Step 7, determining radio propagation weighting coefficients from each antenna unit toa detection area splitting grid node; Step 8, calculating an image field of the detection area; Step 9, detecting a target according to a field value distribution condition of an imaging area; and Step 10, measuring the coordinates of the target. The phased array close-distance digital imaging method provided by the invention provides an integrated solution for the close-distance phased array detection and imaging, provides high-precision target imaging while achieving the target detection, and fully utilizes limited hardware conditions to realize high performance integrated target detection and imaging identification.

Structure of the disclosed circuit board includes an insulator and a first conductor. The insulator possesses a first up surface, a first low surface and a broadside. The first conductor possesses a first up surface, a first low surface and a broadside. The insulator clothes the first conductor so that at least part of first broadside of the first conductor is built in the insulator; at least part of first up surface of the first conductor is protruded and exposed out of the first up surface of the insulator; and at least part of first low surface of the first conductor is exposed out of the first low surface of the insulator. The first conductor is not prepared from conductive paste, using characteristic of solid conductor, the invention prevents rimose phenomena happened in conductive path on general circuit board. The invention increases reliability and saves materials.

The invention discloses an animation data processing method and device, a storage medium and computer equipment, and the method comprises the steps: responding to a skeletal animation importing operation, reading a plurality of skeletal animations under a skeletal animation importing path, and enabling skeletal animation identifiers corresponding to the skeletal animations to be displayed in a preset position display region, wherein the preset position display area further comprises a target animation identifier corresponding to a to-be-generated target animation, the skeletal animation identifier carries a feature related to a relative position between the target animation identifiers, and the skeletal animation identifier in the preset position display area is a position-adjustable identifier; obtaining a fusion weight parameter corresponding to the skeletal animation based on the relative position between the skeletal animation identifier and the target animation identifier; and according to the fusion weight parameter, performing animation fusion on the skeletal animation to obtain the target animation.

The invention discloses a method for extracting lithium from brine. According to the method, tributyl phosphate, an amide compound and a diluent are used as extraction agents and ferric salt as a co-extraction agent to extract the brine. The method comprises the following steps of: (1) preparing the co-extraction agent into a solution to obtain a co-extraction agent solution; carrying out mixed extraction on the co-extraction agent solution, the tributyl phosphate and the diluent, and separating to obtain a first organic phase; (2) adding the amide compound, the tributyl phosphate and the diluent into the first organic phase to obtain a second organic phase; and (3) mixing the second organic phase with the brine, extracting, and separating to obtain a lithium-containing extracting solution. According to the method for extracting the lithium from the brine, an emulsification phenomenon easily occurring during extraction of the tributyl phosphate and the amide compound can be eliminated,smooth operation of an extraction process is ensured, application limitation of an amide extraction agent is reduced, corrosion condition of extraction equipment during extraction can be reduced, andthe industrial application of the tributyl phosphate and the amide compound as the extraction agent is facilitated.

The invention discloses a positioning method and device. The method comprises steps: positioning signals sent from a position to be detected are received in least three reception positions; first phase differences between the positioning signals in the at least three reception positions and reference signals in the at least three reception positions are determined; any two of the at least three first phase differences are subtracted, at least three second phase differences are obtained; distances of the at least three reception positions to the position to be detected are obtained according to the at least three second phase differences; the position to be detected is obtained according to the distances of the at least three reception positions to the position to be detected and the at least three reception positions.

The invention relates to a low-melting point metal-matrix aramid fiber composite material and a preparation method thereof, belonging to the field of low-melting point soft metal-matrix fiber reinforced composite materials. The structure of the composite material is as follows: aramid fiber is embedded into a low-melting point metal matrix, and the volume ratio of the low-melting point metal to the aramid fiber is (95-97):(5-3). High-strength aramid fiber is used as a reinforcement of lead and lead alloy, and the molten lead and lead alloy permeate into the aramid fiber after surface metallization to prepare a lead and lead alloy-matrix aramid fiber composite material. A composite material taking a low-melting point soft metal as a matrix is reinforced by fiber in great difference from the strength of the matrix metal material; by adopting a liquid permeation method, a composite material with an obvious reinforcement effect can be effectively prepared only by use of low fiber volume percent; and the tensile strength of the low-melting point metal-matrix composite material provided by the invention can reach 150MPa, and the elongation can reach 20%.

The invention provides a wind turbine generator blade clearance control method based on load detection, and relates to the field of wind turbine generator regulation and control. The wind turbine generator blade clearance control method comprises the steps that detection points of key parts of a wind turbine generator structure are selected, and load detection is carried out on the key parts; the load of the detected key parts is converted into the load in the pitching direction of a cabin under a static hub coordinate system according to the acquired yawing azimuth angles of a wind wheel and the cabin; a cabin pitching load negative threshold value is obtained through wind turbine generator simulation software according to design specifications, and a variable pitch protection angle is determined; and loads of the key parts such as a blade root, a main shaft, a tower top and a tower bottom of a wind turbine generator are used for identifying a negative pitching load borne by the wind wheel, and the purpose of increasing blade clearance is achieved along with the specific operating condition characteristics of negative wind shearing in combination with a targeted pitch angle control method.

The invention discloses a carbon fiber reinforced thermosetting resin-based composite material and a preparation method thereof, and belongs to the technical field of advanced composite materials. The preparation method comprises the following steps: sampling matrix resin, a low-shrinkage agent, a curing agent, a polymerization inhibitor, an internal release agent, a thickening agent and a dispersing aid according to the mass ratio, and conducting stirring and uniform mixing to prepare resin paste; preparing flaky carbon fiber prepreg from the resin paste and the carbon fiber non-woven fabric through a flaky molding compound process; flatly laying and overlaying the sheet-shaped carbon fiber prepreg, and conducting vacuum hot pressing and die assembly molding; and after the vacuum hot pressing die pressing is finished, and conducting cooling and demolding to obtain the carbon fiber reinforced thermosetting resin-based composite material. The preparation method has the characteristics of simple process, short production period, low energy consumption, designable strength and modulus, easiness in large-area forming, capability of meeting the forming requirements of products with complex shapes and structures and the like; and the prepared composite material has the excellent performances of high strength, high modulus, light weight, isotropy and the like.

The invention relates to the technical field of boilers, in particular to a boiler system. The boiler system comprises a first boiler provided with a first primary air pipe, a second boiler provided with a second primary air pipe and a between-boiler pulverized coal conveying device. The between-boiler pulverized coal conveying device is connected with the first primary air pipe and the second primary air pipe, and conveys pulverized coal in the second primary air pipe to the first primary air pipe. On the basis, the application limitation caused by the high coal feeding power of a coal pulverizing system to a fuel-prudent ignition technology in beginning of the boilers can be reduced.

The invention discloses a rivet mounting method. The rivet mounting method comprises the following steps that a hole opening step is carried out, specifically, a mounting hole of a rivet is formed ina thin wall; a hole turning step is carried out, specifically, the mounting hole is stretched, so that a positioning flange is generated on one side of the thin wall; and the riveting step is carriedout, specifically, the rivet is arranged in the mounting hole, the positioning flange is compressed, and the rivet is fixed to the thin wall. According to the rivet mounting method, the rivet mountingstructure and the brazing type heat exchanger for the wall-hanging furnace, the position precision and perpendicularity of the rivet are improved.

The invention provides an electronic writing apparatus. The electronic writing apparatus comprises a flexible display screen, a touch film covering the surface of the flexible display screen and used for converting touch operation on the touch film from outside into corresponding induction data, and a signal processor electrically connected with the flexible display screen and the touch film and configured to obtain the induction data and drive the flexible display screen to output a corresponding track according to the induction data so as to form handwriting. By use of the electronic writing apparatus, on one hand, the electronic writing apparatus is convenient to carry by utilizing a characteristic that the flexible display screen is convenient to store; and on the other hand, by utilizing the electronic apparatus, good writing experience is obtained, multiple functions of appreciation and analysis, copybook reading, modeling, copying and the like are realized, and various writing demands of users are met.

The present invention adopts a card-type spacer-type convection barrier, which includes two or more light-transmitting plates forming an interlayer. The double-layer light-transmitting plates are sealed and connected to the spacers around the light-transmitting plates, transparent fins, and fin installation barriers. It is characterized in that the spacers form a rectangular side frame, and the fins are installed on the retaining strips and the spacers are buckled through the slots. Molecular sieves or hygroscopic agents can be placed in the cavity formed between the two, and the transparent wings are vertically and parallelly arranged on the upper and lower sides. The lower fins are installed between the retaining bars. Since the above-mentioned spacers are set to form a rectangular side frame, and the fins are installed and fastened with the spacers through the slots, the manufacturing and installation process is simpler and the cost is reduced; at the same time, transparent wings are vertically and parallelly arranged on the upper, The lower fins are installed between the retaining bars, so the downward tension or gravity can be used to hang the fins, which can effectively fix the fins and solve the problem of easy sagging of the middle part of the fins when the width of the light-transmitting sandwich panel is large. It causes visual discomfort, thereby improving the reliability of use and expanding the application range of width. Compared with the existing technology, the vertical and parallel arrangement of the fins can limit the upper and lower convection and front and rear backflow of the heated air. The thermal insulation performance and light transmittance of the light-transmitting plate are improved in the same range.

The invention relates to a cast-in-place double-sided fair-faced concrete wall structure and a construction method thereof. The cast-in-place double-sided fair-faced concrete wall structure comprisessteel reinforcement frameworks arranged oppositely, insulation plates and fair-faced concrete wall bodies integrally formed on the two sides of the insulation plates in a pouring mode, wherein each insulation plate is fixedly sandwiched between the corresponding two adjacent steel reinforcement frameworks; and the steel reinforcement frameworks and the insulation plates are all embedded in the fair-faced concrete wall bodies. According to the cast-in-place double-sided fair-faced concrete wall structure and the construction method thereof, the problem that a double-sided fair-faced concrete wall is difficult to form in an integrated cast-in-place mode is effectively solved, so that the two sides of the wall bodies have a fair-faced effect, the double-sided fair-faced concrete wall bodies can be formed in an integrated cast-in-place mode, the insulation performance of the wall bodies is guaranteed, and application limitation of fair-faced concrete is reduced.