79results about How to "Strong damage resistance" patented technology

The invention relates to a small electric unmanned helicopter aerial photography system based on a front-end triaxial-type pan-tilt. The small electric unmanned helicopter aerial photography system is a small unmanned helicopter aerial photography system design mainly comprising a front-end triaxial-type pan-tilt design, a small unmanned helicopter platform design, a ground station design, and a communication system design, and belongs to the technical field of aircraft designs. The aerial photography system is light and flexible, high in integration level, low in noise, small in vibration, good in use maneuverability, low in requirements on the conditions of use environments, site and the like, and capable of realizing the omnibearing photography. The aerial photography system has a high practical value and a wide application prospect in the field of unmanned aircrafts.

The invention relates to a symmetrical noncoherent distance measurement / time synchronism system of a cluster link two-way asynchronous communication channel, belonging to the autonomous technical field of aviation data links, radio navigation and aircrafts. By the invention, a symmetrical noncoherent distance measurement / time synchronism method and a system framework can be realized on a DSP (Digital Signal Processor) of a circuit board and an FPGA (Field Programmable Gate Array). Based on the two-way asynchronous communication link between cluster link member nodes, the noncoherent distance measurement / time synchronism system provides a noncoherent spread spectrum distance measurement principle of a two-way asynchronous communication frame under a comprehensive channel system, constructs a noncoherent spread spectrum distance measurement algorithm structure of the air fleet link two-way asynchronous communication frame in a uniform form by adopting a communication frame based on CCSDS Proximity-1 version-3 and provides two algorithms of base line measurement and time synchronism measurement control: an interprocessor time synchronism recursive algorithm and a Doppler integral compensation algorithm. The invention overcomes the defects of the traditional coherent transferring distance measurement and the two-way synchronous noncoherent distance measurement and provides a distance measurement scheme, in which both parts of the two-way asynchronous communication distance measurement can equally acquire a measurement result.

The invented method includes the following steps: firstly, collecting fingerprint image, making characteristics extraction, encryption processing, printing it on the two-dimensional bar code, concealing the fingerprint information into two-dimensional bar code; collecting two-dimensional bar code image, making image segmentation, filtering, geometric correction and layered pretreatment, identifying and decoding said bar code image to obtain the loaded encrypted information, deciphering said encrypted information to obtain fingerprint characteristic information loaded in two-dimensional bar code, comparing said information with field fingerprint information, making detection so as to implement anti-false authentication of fingerprint.

An infrared array number-of-personnel sensor-based counting method and apparatus comprises the following steps: processing an output signal of an infrared array sensor arranged above a door, identifying the contour of human bodies, and tracking the movement direction of the contour; and judging personnel goes in or out according to the movement track of the contour to realize counting of personnel access to the door. A counting apparatus comprises a single-chip microcomputer system, and the infrared array sensor, a PIR sensor and a power supply circuit which are connected with the single-chip microcomputer system, and the single-chip microcomputer system acquires the infrared image of a detection area through the infrared array sensor, and detects whether personnel passes by the door or not through the PIR sensor. The counting method and the counting apparatus solve the problem of low detection precision of infrared emission and reception sensors in the process of multiple persons passing through the door, has the advantages of multi-target tracking, high identification precision and low power dissipation, is difficult to damage due to high installing position, has substantial advantages, and adapts to application promotion.

The invention relates to a piezoelectric type noise sensor and belongs to the technical field of space sensors. The piezoelectric type noise sensor comprises a front cover, a film sheet, a sound sensitizing assembly, a vibration compensating assembly, a shell, a locking bolt, a back cover, a socket and a mounting flange, wherein the back cover is connected with the shell in an interference fit or welding manner; the socket is connected with the back cover through the interface fit or welding manner; and the mounting flange is connected with the shell through a thread or welding manner. According to the piezoelectric type noise sensor disclosed by the invention, in use, an external power supply is not needed, electronic components do not exist inside, the use temperature range is wide, and no limitation of the electronic components exist; and the sensor is manufactured from a high temperature resisting material, the internal electric connection utilizes a spot welding manner, and the sensor can work under the high temperature environment.

Protection against impact damage to delicate items stored in a protective encasement such as cell phone cases is significantly improved by protectively lining the interior of a protective encasement with a unique protective combination. This combination includes a protective inlay or insert of a thermoset viscoelastomeric protector in its static form coated with a compatible and non-confining elastomeric polymer coating. Coating the viscoelastomeric protector with the elastomeric coating necessarily requires retention of an undistorted viscoelastomeric protector in its static form during the formative coating procedure. This can be effectively accomplished by injecting coating under low pressure and high solids coating conditions.

The invention relates to a production internet of things management method. The method comprises the steps of: generating a two-dimension code of a product by a two-dimension code generator, and fixing the two-dimension code to a corresponding component; scanning the two-dimension code of the component by adopting a production internet of things platform, photographing the component and obtaining production tracking data; transmitting the production tracking data to a BIM platform, and visually observing the production state of the component. The production internet of things management method has advantages that the production internet of things method combines the two-dimension code, the production internet of things platform and the BIM platform together and visually feeds back the production tracking data to a three-dimension information model; the two-dimension code is applicable to the field of production tracking; the production internet of things platform is mainly used for user management, process management, two-dimension code scanning, photographing, data uploading and historical data checking; and the BIM takes relevant information data of a construction project as a base of the model, has five advantages of visualization, harmony, simulation, optimization and mappability, and is wider and wider in application.

The invention discloses a flat and lug combined bidirectional diode chip which is processed by a P-type primary wafer; primary oxidization layers are arranged at positions, close to both ends, on two faces of a chip; the two faces of the chip are provided with phosphorous diffusion layers; secondary oxidization layers are arranged on the primary oxidization layers and the phosphorous diffusion layers; lug slots are formed in overlapped regions between the secondary oxidization layers and the primary oxidization layers; silicon nitride passivation layers are arranged on the lug slots; and the surfaces of the two faces of the chip are provided with nickel layers. The invention also discloses a manufacturing process for the flat and lug combined bidirectional diode chip. The manufacturing process comprises the following steps of: oxidizing for the first time, photoetching, diffusing phosphorous, oxidizing for the second time, photoetching the lug slots, passivating, photoetching lead wire holes, electroplating nickel and cutting to obtain the independent chip. The invention has the advantages that: as the mechanical intensity of the wafer and the wafer is hard to smash, the scribing (or cutting) efficiency is improved greatly; and compared with the scribing (or cutting) efficiency in a glass passivation process (GPP), the scribing (or cutting) efficiency is improved by over 40 percent, so the area of the whole graph can be saved by about 20 percent.

The invention provides a pavilion without bolted connections. The pavilion provided by the invention comprises four stand columns, four beams and a roof, wherein the four stand columns are arranged in the shape of a regular quadrangle, both ends of each beam are respectively connected with the upper parts of two adjacent stand columns, and the four corners of the roof are respectively fixed to the tops of the four stand columns; the side surfaces of the upper part of each stand column and the bottom surface of the roof are respectively provided with blind holes, and both ends of each beam and the top of the stand columns are correspondingly provided with connection tenons which are matched with the blind holes; and the beams are respectively fixed to the stand columns on both sides by the connection tenons, stand columns are respectively fixed to the roof by the connection tenons, and the stand column, the beams and the roof are made of glass fiber reinforced plastic. The pavilion without bolted connections has the advantages of good damage resistance, no need of periodic maintenance and good leak resistance.

The invention relates to micro-nanometer composite daily ceramic glaze and belongs to the technical field of daily ceramic glaze preparation. The daily ceramic glaze is prepared from 20-50 parts by weight of micrometer alpha-Al2O3, 45-60 parts by weight of micrometer TiC, 2-8 parts by weight of nanometer TiC, 2-8 parts by weight of nanometer ZrO2, 2-8 parts by weight of micrometer Mo, 2-8 parts by weight of micrometer Ni, 25-35 parts by weight of silicon carbide, 30-40 parts by weight of fused corundum, 3-8 parts by weight of mullite, 5-10 parts by weight of aluminate cement, 10-20 parts by weight of a composite water reducer and 20-30 parts by weight of composite silicon oxide micropowder. The ceramic glaze has metal strength and toughness and has ceramic material advantages of high temperature resistance, high temperature oxidation resistance, wear resistance and corrosion resistance.

The invention discloses an automatic power-supply apparatus for wireless sensing nodes. By adoption of the automatic power-supply apparatus, solar energy, wind energy and temperature difference can be comprehensively utilized, and the miniaturization of the apparatus can be satisfied. The automatic power-supply apparatus adopts a spherical framework; the automatic power-supply apparatus comprises a dome-shaped top cover and a bottom plate; multiple air guiding sheets are uniformly and vertically mounted between the top cover and the bottom plate; top solar cell panels are arranged on the upper surface of the top cover; top temperature-difference power generation chips are mounted on the back surfaces of the top solar cell panels; a perpendicular wind power generator is mounted in the middle of the spherical framework; the air guiding sheets, the lower surface of the top cover and the upper surface of the bottom plate form air channels; air channel opening solar cell panels are mounted on the lower surfaces of the air channels; and bottom temperature-difference power generation chips are arranged on the back surfaces of the air channel opening solar cell panels. Therefore, solar energy, wind energy and temperature difference are fully utilized to supply power supply to sensors; and meanwhile the automatic power-supply apparatus is compact in structure.

The invention belongs to the field of materials, and discloses a metal-based composite material. The metal-based composite material comprises Al2O3 hollow microspheres, silicon carbide, a binder and ametal material, and the particle size of the Al2O3 hollow microspheres is 10-60 micrometres. According to a preparation method of the metal-based composite material, the metal-based composite material is prepared by adopting an infiltration casting method, the Al2O3 hollow microspheres, the silicon carbide and the binder are adopted as a raw material to prepare a ceramic preform with porous property and high strength, and then a metal solution enters the ceramic preform under the action of pressurization and capillary force between the ceramic preforms and is compounded to obtain the metal-based composite material. Through reasonable proportioning and cooperation of the Al2O3 hollow microspheres, silicon carbide particles and silicon carbide whiskers, a ceramic preform material with uniform pores is formed under the effects of full mixing and high-temperature bonding, and after infiltration with the metal solution, the obtained metal-based composite material is small in density whichcan reach 1.87 gram per cubic meter, uniform in texture and high in mechanical strength, the compression strength can be larger than 400 MPa, the plasticity is good, the toughness is high, and the damage resistance is high.

A reciprocating-impact excavating part for use in an excavating machine and having wear-resistant guiding sleeves that are easy to process / assemble / disassemble and are fastened by elongated threaded rods. Wear-resistant guiding sleeves (4) are arranged between impact guiding members (1) and an enclosure (8) and / or arranged between the impact guiding members (1) and rolling friction bodies (7). Impact heads (9) are arranged at one ends or either ends of the impact guiding members (1). Impacting teeth (12) are arranged on impacting teeth bases (11). When guiding threaded rods (13) are separated from the impact guiding members (1), the guiding threaded rods (13) are run through guiding threaded-rod holes (15) to be mated with guiding nuts (14) to fasten the impacting teeth bases (11), the wear-resistant guiding sleeves (4), the impact guiding members (1), and a guiding rod connector (2) into a single-body reciprocating impact frame (16). Alternatively, when the guiding threaded rods (13) and the impact guiding members (1) are a single body, the guiding threaded rod (13) are mated with the guiding nuts (14) to fasten the impacting teeth bases (11), the wear-resistant guiding sleeves (4), and the guiding rod connector (2) into the single-body reciprocating impact frame (16). The wear-resistant guiding sleeves (4) are driven by the guiding rod connector (2) and supported by the rolling friction bodies (7) to make reciprocating movements, thus increasing the practicability and service life of equipment.

Disclosed is an online cleaning device of a heat exchanger. The online cleaning device of the heat exchanger comprises the heat exchanger, a ball injector and a rubber ball delivery pump, wherein an inner pipeline of the heat exchanger is of a U structure, the right side of the heat exchanger is provided with a water inlet pipe orifice, the left side of the heat exchanger is provided with a water outlet pipe orifice, the water outlet pipe orifice is connected with the front end of a funneling ball collector through a pipeline, the rear end of the funneling ball collector is provided with a cooling water outlet, an inverted cone ball collection net is arranged in the funneling ball collector, a variable diameter type ball conveyor is arranged at the tail end of the inverted cone ball collection net, the variable diameter type ball conveyor is connected with a ball discharge pipe orifice, the ball discharge pipe orifice of the funneling ball collector is connected with a ball feed pipe orifice of the rapid ball injector through a flange, and a ball collection valve is arranged on the pipeline of the funneling ball collector. The online cleaning device of the heat exchanger can integrate collection and injection of rubber balls, and greatly improves ball collection efficiency. Ball collection efficiency of a common rubber ball cleaning device ranges from 30% to 70%, and ball collection efficiency of the online cleaning device of the heat exchanger reaches 100%. Additionally, the online cleaning device of the heat exchanger achieves a circulation cleaning function, is simple to operate for cleaning the rubber balls, low in cleaning energy consumption and short in cleaning period.

The present invention relates to a panel, especially for a component having a box structure in an airplane airfoil, comprising a surface shaped body and grid-like reinforcement bars protruding from the body on one side of the body, and the body and the grid-like reinforcement bars are integral molded. Since the body and the grid-like reinforcement bars of the panel are integral molded, no additional connecting process is required, so that the disconnection phenomenon as happened between the skin and the stiffener or stringer of the prior art would not occur, and the assembly complexity can be decreased.

The invention provides a sterilization incubator for a piglet in a farm. The sterilization incubator is composed of a box roof, a box body, a side door, an observing port, an infrared ray explosion-proof light and an electric hot plate, wherein the observing port is reserved on the box roof, the infrared ray explosion-proof light is arranged in the box roof, the side door is reserved on one side of the box body so that the piglet can freely go in or out, and the electric hot plate is arranged at the bottom of the box body and can automatically regulate temperatures according to the temperatures in the box. The infrared ray explosion-proof light not only is provided with a function of keeping the incubator warm, but also can sterilize the incubator so that the piglet can grow in a good environment. The box body is made of double-layer hollow polyether diols (PD) plastic plates so that the box body is slow in heat dissipation, high in heat efficiency and good in the capability of destruction resistance; the infrared ray explosion-proof light is added for sterilization so that the piglet can grow in a better environment; and the electric hot plate which can automatically regulate the temperatures can enable the temperatures of the incubator to be kept in a certain range, and the box body is convenient to clean.

The invention relates to an AGV multispectral color discrimination tracking navigation and shape and color positioning method based on a visual identification technology, and the method comprises the following steps of constructing a longitudinal and transverse grid type AGV operation network, employing a plurality of vertical color bands constructed by a first color identifier, employing a plurality of horizontal color bands constructed by a second color identifier. The longitudinal colored bands and the transverse colored bands are respectively crossed to form the longitudinal and transverse grid type AGV operation network, and the intersection points or specific position points of the longitudinal colored bands and the transverse colored bands are the intersection position points or specific position pointsmarked by the specific shapes of the longitudinal colored bands and the transverse colored bands and having both shapes and colors. In the AGV navigation running process, the running route of the AGV is determined through the spectral color visual identification of the longitudinal colored bands and the transverse colored bands, and through visual identification of the position information marked in a shape and color combination mode, the intersection where the AGV passes and the position information are determined, and the AGV runs to a preset terminal point according to the determined running route, the intersection and the position information. The method is applied to the technical field of AGVs.

The invention discloses an underwater dish-shaped aircraft. The hydrodynamic appearance of the bionic underwater dish-shaped fish is designed, and it has low-resistance characteristics in all directions of the circumference, so that it can quickly complete vector maneuvering underwater; A plurality of hollow cylinders with different radii and lengths are fixedly connected to form a dish-shaped profile, which makes the aircraft easy to process and is conducive to forming a fluid shape; the structure of the dish-shaped aircraft is simple, the technical difficulty of development is small, the manufacturing process is simple, and the manufacturing cost is low. Low height, suitable for mass use; each cylinder is independent of each other and sealed separately, when one of them leaks, it will not affect the normal operation of the devices in the other cylinders, and has strong damage resistance; the hollow cylinder structure can provide greater positive buoyancy; The upper guard plate of the dish-shaped cabin is designed to be smooth and linear, which can improve the maneuverability of the aircraft; the bottom plate is designed to be wave-shaped, which reduces the contact area with the seabed, reduces water flow resistance, facilitates the launch of the aircraft, and increases maneuverability.

The invention discloses a metal plate cutting machining system, which comprises a plate conveying unit and a cutting unit. A discharging outlet of the plate conveying unit communicates with a feedinginlet of the cutting unit, the cutting unit comprises a plurality of long-strip supporting seats which are of the same structure and are parallel to one another, each long-strip supporting seat comprises a long-strip base body, a plurality of supporting single bodies and two lifting devices, each supporting single body comprises a metal ball and a plastic ball seat, the top ends of the plastic ball seats are connected with the bottom ends of the metal balls, the bottom ends of the plastic ball seats are connected with the tops of the long-strip base bodies, the two ends of the long-strip basebodies are connected with the top output ends of the corresponding lifting devices, and an impurity falling net is arranged below the long-strip base bodies. The metal plate cutting machining system is high in adjustability and low in production and maintenance cost, improving of the cutting quality and recycling of debris are facilitated, and the accuracy degree is high.

The invention provides an electret noise sensor for spacecraft noise measurement. The electret noise sensor for spacecraft noise measurement is composed of a microphone and an impedance matcher, wherein the microphone is an electret capacitor microphone; the impedance matcher is mainly composed of a temperature compensating resistor, a high value resistor, a high impedance composite tube, a powersupply and signal output connector, and a structural member; and the impedance matcher is used for performing impedance transformation on a signal output from the microphone. The electret noise sensorfor spacecraft noise measurement has wide temperature range, strong anti-damage capability, and smaller vibration sensitivity, can be used for measuring high sound intensity noise, and is suitable for various environmental conditions, such as different height. The electret noise sensor for spacecraft noise measurement is mainly used to measure noise parameters in an aircraft cabin or other severeenvironments.

The invention discloses a marine lifesaving sitting stool which is an upgrade product of a first generation of lifesaving sitting stool. The marine lifesaving sitting stool comprises a stool body, wherein a hand pull ring rope is arranged on the side surface of the stool body, the stool body comprises at least two stool body units which are connected mutually to form one body, each stool body unit is in an integrated sealed hollow structure and comprises a seat body, at least two landing legs positioned under the seat body and a cross plate connected between two landing legs, and the landing legs, the bottom of the seat body and the cross plate surround to define a containing space. The marine lifesaving sitting stool aims at solving the problems that the first generation of lifesaving sitting stool has excessively great floating force when having enough supporting force, the hand pull ring rope of the stool cannot be grabbed easily or firmly and the stool body cannot be used after being punctured by sharp objects when touching the sharp objects.

The invention discloses a river water level visual measurement method without a water gauge. The method comprises the following steps: shooting an image of a complete section of a river by using a camera with calibrated internal and external parameters, and performing nonlinear distortion correction; selecting a waterline area on the measurement section in the corrected image, wherein the size of the waterline area covers the amplitude of the water level; carrying out image segmentation on the selected waterline region by adopting a PSPnet network based on deep learning to obtain a binary image with a river bank as a foreground and a water surface as a background; carrying out horizontal projection on the binary image and searching a maximum gradient value to obtain an observation value of a longitudinal coordinate of a waterline image point; calculating a water line image point ordinate based on a variable-height water surface photogrammetry model iteration water level value, and taking the condition that the difference between the ordinate and the observation value is smaller than the measurement precision as an iteration stop condition to obtain a water level approximate value. Only the flow section terrain needs to be measured, a water gauge and a marker do not need to be installed, and the method has the advantages of being easy to arrange, high in damage resistance and visual in result.

The invention discloses a stretcher. The stretcher comprises a stretcher face and lifting bands. The stretcher face comprises a non-woven fabric layer on the upper side and a water absorbing and retaining layer located under the non-woven fabric layer. The water absorbing and retaining layer comprises macromolecule absorbent resin. The lifting bands are arranged between the non-woven fabric layer and the water absorbing and retaining layer. By the adoption of the technical scheme, the stretcher has the advantages of being small, light, convenient to carry and high in anti-damage capacity, and is quite suitable for emergency transfer of the sick and wounded outdoors. Meanwhile, due to the fact that the non-woven fabric layer is arranged on the upper side of the stretcher face, pus, extravasated blood or other body fluid of the sick and wounded can permeate into the lower water absorbing and retaining layer quickly and dispersedly, liquid can be absorbed and retained by the water absorbing and retaining layer quickly, so that liquid can not be accumulated between the water absorbing and retaining layer and the non-woven fabric layer, and in turn, quick permeation of liquid in the non-woven fabric layer can be promoted.

The invention relates to a light guide film, a production method thereof and a light guide device. The upper surface of the light guide film is a light emitting surface, and the lower surface is a light incident surface. The lower surface of the light guide film is smoothly arranged and is used for being connected with a substrate. A plurality of hollow ultramicro structures are arranged in the light guide film, the sides, close to the lower surface of the light guide film, of the hollow ultramicro structures are conduction reflection faces, and a gap between every two adjacent ultramicro structures is a light emitting gap. According to the invention, the lower surface of the light guide film is smooth, so that when the light guide film is fixed with the substrate, the whole surface fitting can be realized, the contact area is maximum, the fixing effect can be optimal, and the light guide film and the substrate are not easy to separate. Meanwhile, the ultrastructure is arranged in thelight guide film, so that light guide can be realized, the ultrastructure is not easy to damage, and the damage resistance is stronger.

The invention provides a method for producing small-size quartz spring lamps. In order to solve the problems that production of common high-power heaters is highly difficult and high in material cost and fiber heating wires of the produced heaters are easy to break and damage during moving and use of the heaters and the like, the method is provided and can solve the problem that the fiber heating wires of the produced heaters are easy to break and damage during moving and use of quartz tubes, and the small-size quartz spring lamps are flexible in use, widely applicable, long in service lives and high in damage resistance.

The invention discloses a method for preparing pouring incense added with environmental-friendly adhesive specially for scented incense, comprising the steps of: (1) diluting and well mixing the environmental-friendly adhesive specially for the scented incense in proportion by utilizing clear water and mixing needed spices of debregeasia hide powder, wood powder, carbon powder, cedar powder, essence, potassium chlorate and the like into a bulk ingredient; (2) adhering a selected small bamboo stick into the diluent of the environmental-friendly adhesive specially for the scented incense, adding the bulk ingredient on the small bamboo stick adhered with the diluent of the environmental-friendly adhesive specially for the scented incense according to a conventional method, putting the small bamboo stick added with powders into a traditional pouring incense machine to complete the processes of powder adding and barrel hitting and successively completing the processes repeatedly according to the different requirements of each pouring incense; and (3) till the last process of covering a skin is completed, basking the ready-made incense on an appointed incense basking shed to be completely basked and taking into a warehouse. In the scented incense provided by the invention, the binding power and functionality of the dedicated environmental-friendly adhesive are just right for forminga strong and tough incense body; therefore, the input cost of a natural adhesive is reduced and the manufacturing time and manufacturing cost can be saved for manufacturers.

The invention discloses an unmanned aerial vehicle autonomous landing method based on two-dimensional code recognition. Multiple pieces of sensor information are fused in different stages, in the initial stage, the unmanned aerial vehicle is mainly guided to fly to a target area through GPS information, and then through visual information search, a ground two-dimensional code is recognized, and coordinates of a landing position are locked. And finally, the height and target coordinates of the four-rotor unmanned aerial vehicle are calculated according to information of multiple sensors, and high-precision local positioning and autonomous landing of the four-rotor unmanned aerial vehicle are achieved through a flight control algorithm. According to the four-rotor unmanned aerial vehicle autonomous landing method based on two-dimensional code recognition, the landing precision and the tracking efficiency are remarkably improved.

The present invention is a kind of simple machine-made plate painting, which itself is a kind of arts and crafts works and decorations in the form of superimposed and restrained characteristic expression by inner and outer double solid base materials. The outer package layer uses CAD as a design tool. And directly use the metal plate mechanism to process and produce the main content and restrained shape of the picture; the substrate [1] layer is made of a metal plate, and the machining process is used to make the picture content together; and through matching and Substrates of various types of decorative boards [2] to express structure and decorative effects; double substrates may be considered as mutual performance or mutual support to reflect. It is also suitable as a kind of integrated method and method structure that not only decorates but also strengthens or protects ordinary decorative panels with independent structural purposes. Afraid of wet and chaotic scenes, it will have a wide range of uses in the construction of camps around the United States, construction and place decoration.