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 system and an implement method thereof for secret communications based on a public communication network voice channel. The system and the implement method thereof for the secret communications based on the public communication network voice channel mainly solve the problem in an existing technology that a voice encryption method of a public communication network is low in reliability, difficult in technique and not convenient to implement. The system for the secret communications based on the public communication network voice channel comprises a power source, and further comprises a processor connected with the power source, and a storage, a digital / analog conversion module, a voice compression / decompression module, an encryption / decryption module, and a digital analogy mapping modulation / demodulation module all connected with the processor. By adopting the scheme, the system and the implement method thereof for the secret communications based on the public communication network voice channel achieve a purpose of conveniently and reliably keeping voice communications confidential, and have high practical value and promotional value.

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.

The invention relates to a continuous preparation method of a graphene film prereg, and belongs to the technical field of functional materials. The graphene film prereg takes a resin adhesive film anda graphene film as the raw materials and is prepared through the hot melting process, the resin adhesive film is coated with a resin at the breadth of 100-1400 mm at the surface density of 10-100 g / m<2> on release paper, the resin is one of epoxy resin, phenolic resin, unsaturated polyester, polyurethane, bismaleimide resin and polyimide resin; the graphene film is a film having a three-dimensional network structure or a porous structure and is prepared by taking graphene as the main material, and the material composition of the graphene film is determined according to the use function of thegraphene film prereg. The continuous preparation of the method leads to the advantage of high yield of the graphene film prereg, and the heavy demand of the practical application is well met. The most crucial point of the method is the continuous preparation of the graphene film.

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 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 discloses an electric energy meter clock checkout method. A district concentrator issues an encrypted broadcast clock checkout command message to an electric energy meter, a clock checkout command is decrypted after the electric energy meter receives the broadcast clock checkout command message, and the decrypted clock checkout command comprises a clock checkout command serial numberand clock checkout time. After the encrypted broadcast clock checkout mode is adopted, the clock checkout speed and the clock checkout success rate of the electric energy meter can be greatly increased, replay attack caused by illegal interception of the clock checkout message can be effectively prevented, a clock of the electric energy meter is prevented from being illegally adjusted, and safetyof the clock is ensured.

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 discloses a preparation method of mild and green lignin-containing nanocellulose fibrils and a product. The method comprises the steps that straw raw materials are added with water and then placed in a cooking system, sodium hydroxide and magnesium sulfate are added, then oxygen is introduced, and raw material fibers are obtained through washing with deionized water after cooking treatment; and deionized water is added, and treaded by using a wall breaking machine, and then treated by using a cell crusher to obtain a lignin-containing nanocellulose fibril suspension. The bagasse, rice and wheat straw and other straws are used as raw materials, and the method has the characteristics of waste utilization, economy, environmental protection and easy application to industrial production; the film material is preliminarily prepared by utilizing the obtained LCNF, the film material has relatively high transmission in a visible light region, the transmissivity in an ultraviolet light region is close to 0, and due to the characteristic, the material has relatively good application potential in the fields of food packaging materials, electronic products and the like. The method of combining oxygen-alkali chemical pretreatment with mechanical treatment is adopted, and the preparation process has the advantages of environmental friendliness and low energy consumption.

The invention relates to the technical field of sea current meters and discloses a deep sea current meter with an induction transmission communication mode. The sea current meter comprises an anchoring object and a buoy body, and is characterized in that the anchoring object and the buoy body are connected through a communication steel cable; and an induction transmission modem is arranged on thebuoy body, and a plurality of induction transmission sea current meters are arranged on the communication steel cable at intervals. The sea current meter can be deployed in a buoy anchor system and asubsurface buoy anchor system, or is integrated in a comprehensive sea observation platform; platform application limitation of a traditional sea current meter is basically removed, data can be uploaded to the platform in real time through the induction transmission module, timeliness and an application value of the data are greatly improved, and problems existing in data storage and access in anapplication of the traditional deep sea current meter are solved. The invention further discloses a measuring method of the deep sea current meter with the induction transmission communication mode.

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 energy-saving lamp with an air insulating cavity. The energy-saving lamp comprises a lamp tube, a lamp housing and an electronic ballast, wherein the electronic ballast is arranged in the lamp housing; the lamp tube surrounds the lamp housing which is outside the electronic ballast; the lamp housing is composed of an upper housing and a lower housing which are fastened to each other; the fastened upper housing and lower housing have an inner side wall and an outer side wall; and a closed insulating cavity filled with air is formed between the inner side wall and the outer side wall. The scheme provided by the invention utilizes the heat insulation principle of air cleverly as follows: when the heat generated by the lamp tube is transferred to the inside of the lamp housing, the heat firstly passes through the outer wall of the lamp housing and heats air in the air insulating cavity, and secondly passes through the inner sleeve of the electronic ballast to affect the electronic ballast. As air has higher thermal resistance, the time that the heat of the lamp tube is transferred to the electronic ballast can be greatly prolonged, the electronic ballast can not be affected by high external temperature in long-term operation and the application of the energy-saving lamp can not be limited.

The invention discloses a system and an implement method thereof for secret communications based on a public communication network voice channel. The system and the implement method thereof for the secret communications based on the public communication network voice channel mainly solve the problem in an existing technology that a voice encryption method of a public communication network is low in reliability, difficult in technique and not convenient to implement. The system for the secret communications based on the public communication network voice channel comprises a power source, and further comprises a processor connected with the power source, and a storage, a digital / analog conversion module, a voice compression / decompression module, an encryption / decryption module, and a digital analogy mapping modulation / demodulation module all connected with the processor. By adopting the scheme, the system and the implement method thereof for the secret communications based on the public communication network voice channel achieve a purpose of conveniently and reliably keeping voice communications confidential, and have high practical value and promotional value.

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 invention discloses a high-heat-input submerged-arc welding wire steel wire rod and a preparation method thereof, a high-heat-input submerged-arc welding wire and a high-heat-input welding method. The high-heat-input submerged-arc welding wire steel wire rod comprises the following chemical components in percentage by mass: 0.04 to 0.06 percent of C, 0.1 to 0.2 percent of Si, 1.4 to 1.6 percent of Mn, 1.0 to 1.5 percent of Ni, 0.02 to 0.04 percent of Nb, 0.02 to 0.05 percent of Ti, 0.0040 to 0.0055 percent of B and the balance of Al, the alloy comprises the following components in percentage by weight: 0.004% of Mg, 0.0005-0.0020% of P, less than or equal to 0.005% of S, less than or equal to 0.005% of N and the balance of Fe and inevitable impurities. Through reasonable design of the chemical components and the content, the high-heat-input submerged-arc welding wire steel wire rod has low carbon equivalent in the welding wire preparation process, the low-temperature toughness of weld metal can be improved, generation of brittle phases is reduced, the yield ratio of the weld metal is reduced, and the prepared high-heat-input submerged-arc welding wire has good application prospects. The allowable welding heat input is greater than or equal to 300kJ / cm, and a steel plate with the thickness of more than 40mm can be thoroughly welded in a single pass.

The invention discloses a continuous wax dotting shaft which comprises a locating wheel, a wax sticking wheel and a heater. The circumference face of the locating wheel is provided with a plurality oflocating protruding points protruding in the radial direction. The locating protruding points are inserted into round holes of a material belt and drive the material belt to be conveyed horizontally.The wax sticking wheel and the locating wheel are arranged in parallel and are connected integrally through a center shaft. The self axis of the wax sticking wheel coincides with that of the locatingwheel. The wax sticking wheel is provided with protruding radial teeth. Each radial tooth is provided with a sunken wax containing groove. Wax liquid adheres to the inner wall of each wax containinggroove. The wax sticking wheel and the locating wheel rotate coaxially to enable the wax liquid to adhere to the material belt. The heater is nested in the center shaft and controls the wax liquid onthe wax sticking wheel within the liquid state temperature. A coaxial bearing wheel is arranged between the locating wheel and the wax sticking wheel and is provided with a circumference face. By theadoption of the continuous wax dotting shaft, a plurality of wheels on one shaft are utilized for precisely conveying the strip-shaped material belt, bearing the material belt and carrying out local wax sealing on the material belt, the structure cost is low, and the wax sealing efficiency is high.

The invention relates to a device for accurately controlling the impregnation amount of carbon fibers, which can be used for accurately controlling the impregnation amount of the fibers in a carbon fiber wet winding process, and can solve the technical problems that the existing impregnation amount of the carbon fibers is unstable, the impregnation amount cannot be quantified, and defects of wound products are caused by poor infiltration degree of the fibers. The device can be mounted in a gum dipping system of wet winding numerical control equipment for matched use, the device comprises a set of double-roller device, a lower roller is fixed, an upper roller can lift and move along a guide, a gap between the two rollers can be adjusted with the precision of 0.001 mm through a precision adjusting mechanism, the stability of the position of the upper roller when the device works is ensured through a pressing air cylinder, and the working efficiency of the device is improved. Electromagnetic heating devices are arranged in the double rollers, and the viscosity of glue on fibers passing through a gap between the double rollers can be controlled, so that high-quality impregnated fibers with accurate and stable impregnation amount are conveyed before a product is wound.

The invention discloses a continuous wax dispersing groove which comprises a wax storage groove located below a material belt, a wax dispersing shaft and a conveying limiting mechanism. Liquid wax isstored in the wax storage groove, the axial line of the wax dispersing shaft is parallel to the horizontal plane, the wax dispersing shaft makes contact with the lower surface of the material belt, the wax dispersing shaft is provided with wax attaching teeth protruded in the radial direction, and liquid wax in the wax storage groove is attached to the material belt through the wax attaching teethalong with rotation of the wax dispersing shaft. The conveying limiting mechanism is provided with feeding wheels and lower supporting wheels which carry out up-down outer cutting, the axial lines ofthe feeding wheels and the lower supporting wheels are parallel to the axial line of the wax dispersing shaft, the two sides of the wax dispersing shaft are each provided with one feeding wheel and one lower supporting wheel, the connection line between the two feeding wheels is parallel to the conveying direction of the material belt, the feeding wheels are provided with a plurality of convex points extended in the radial direction, the material belt is provided with holes matched with the convex points, and the circumferential faces of the lower supporting wheels are provided with annular grooves. By adopting the continuous wax dispersing groove, wax in the wax storage groove is dispersed to the material belt through circumferential movement of the wax dispersing shaft, local wax sealing of the material belt is achieved, and meanwhile horizontal conveying of the material belt is ensured.

An automatic isolation system for head and tail filaments comprises front units and rear units. A single rear unit corresponds to at least two front units, and only one filament barrel is arranged ina single front unit. Each front unit comprises a plurality of raw filament nozzles, a plurality of filament guide wheels, a raw head device, a traction wheel and the filament barrel. The raw filamentnozzles and the filament guide wheels are in one-to-one correspondence. The filament guide wheels are located at downstream positions of the raw filament nozzles. Speed detectors are arranged on the filament guide wheels. The traction wheels are located at downstream positions of the filament guide wheels. The filament barrels are located at downstream positions of the traction wheels. Each rear unit comprises a bundle collection wheel, a first drafting wheel and a packaging device. The filament barrels of the front units are located at upstream positions of the bundle collection wheels, the first drafting wheels are located at downstream positions of the bundle collection wheels, and the packaging devices are located at downstream positions of the first drafting wheels. The automatic isolation system has the advantages of good detection effect on the head and tail filaments, less application limitation and small application range.

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.