21417results about How to "Light in mass" patented technology

The invention relates to a method for preparing graphene compounds and graphene oxide compounds with high efficiency, relating to the method for preparing the graphene compounds and the graphene oxide compounds. The invention solves the problems of easy composition of graphene or graphene oxide per se and many process steps, higher cost and difficult dispersedness for preparing the graphene compounds and the graphene oxide compounds by the traditional method at the same time. The invention adopts a mechanical stripping method to obtain the graphene compounds and the graphene oxide compounds. In the invention, an automatic machine is utilized, solid particles are used for assisting stripping, the contact area and the stripping number of the stripping process are greatly increased, and carbon material powder experiences a lot of stripping processes through the action of shear and impact, thereby obviously improving the stripping efficiency and achieving the purpose of uniform dispersedness to the composites. The method is suitable for industrial mass production of the graphene compounds and the graphene oxide compounds.

The invention provides a method for preparing graphene or graphene oxide by using high-efficiency and low-cost mechanical stripping and relates to a preparation method of the graphene or the graphene oxide, solving the problems that the traditional micro-mechanical stripping method has low efficiency and can not be used for large-batch production. The method comprises the following step of separating carbon materials by utilizing solid particles and a liquid working medium (or gas working medium) and adopting mechanical stripping to obtain the graphene or the graphene oxide, wherein the carbon materials comprise graphite powder, expanded graphite, expandable graphite or graphite powder oxide. By using automatic machinery and using a great deal of solid particles for assisting stripping processes, the invention greatly increases the contact areas and the stripping times of the stripping processes, the carbon materials are subject to a great amount of stripping processes in a short time through the shearing and impacting functions of the solid particles on the carbon materials, and thereby the method obviously improves the stripping efficiency, has low cost and is suitable for the industrial and large-batch production of the graphene or the graphene oxide.

The invention relates to a small and light wide-field free-form surface prism HMD optical system, which belongs to the field of optical system and device design and is applied to the virtual reality and augmented reality field. The invention comprises a free-form surface prism with three optical surfaces, and a micro-image display; the free-form surface prism is made of plastic glass materials with the refractive index greater than 1; the three free-form optical surfaces are concave surfaces, which meet one of the three surface-type equations, and the location relationship of each surface meets three condition equations; the incident angle formed between the widest-field upper edge rays emitted by an LCD and the second free-form surface meets the total reflection conditions; and an image source element is an LCD of 0.61 or 0.59 inches. The small and light wide-field free-form surface prism HMD optical system is light and compact and has the advantages of good aberration correction and high light energy utilization rate; the optical system enables the observer to see clear images in a wide field of view, and the displayed images do not have apparent brightness attenuation and can not easily cause visual fatigue to the observer.

The invention provides a laser machining method applicable for a complicated curved surface. By adopting processing steps of dividing the complicated curved surface into curved surface sheets and establishing a coordinate system of each curved surface sheet, the subsequent processing steps of dividing sub blocks and machining pattern parallel projection can be implemented according to the coordinates of the curved surface sheets respectively, so the limit that a machining molded surface backing to a laser incident direction or a steep surface parallel to an optical axis direction cannot be machined because only one coordinate system is adopted to perform whole injection in the prior art can be overcome, the machining efficiency is improved and the machining applicable range is extended. The invention also provides a laser machining device. The laser machining device has a three-axis laser machining head structure provided with a two-axis laser polarization mirror and a Z-axis mobile mechanism, so the problem that the conventional system depends on a three-axis lathe is solved; therefore, a machining unit is independent and compact, and is easy to assemble and disassemble; the conventional five-axis linkage milling machine can be changed into a laser-etching machining lathe so that the functions are compatible; and the laser machining device has a significant practical value.

The invention relates to an antibacterial composite nanometer fiber high-efficiency air filtering material and a preparation method thereof, and belongs to the field of preparation of air filtering materials. The antibacterial composite nanometer fiber high-efficiency air filtering material sequentially comprises a non-woven fabric support layer, a filter layer and a nanometer fiber filter layer, wherein the filter layer is obtained by blending antibacterial fibers and micrometer fibers. When harmful air which contains bacteria and viruses passes through the antibacterial composite nanometer fiber high-efficiency air filtering material, the antibacterial composite nanometer fiber high-efficiency air filtering material disclosed by the invention can achieve antiviral and antibacterial effects and has high filter efficiency effect on tiny particles contained in air; the antibacterial composite nanometer fiber high-efficiency air filtering material disclosed by the invention has the advantages of antibacterial effect, and high filter efficiency and relatively lower resistance on the tiny particles contained in air, can achieve the filter efficiency on oily DOP (Dioctyl-Phthalate) particles with the grain diameters of 0.3 micrometers at 99.99% and achieve the filter efficiency on sodium chloride particles of 0.07-0.2 micrometers more than 99.99%, has the advantages of light weight, softness, and the like in practical application and can be used for preparing antibacterial protective articles, such as a mask, a protective mask and application protective clothes.

The invention discloses a lower limbs rehabilitation training robot, which comprises an exoskeletal mechanical structure and a control system independent of the mechanical structure, wherein the exoskeletal mechanical structure comprises thigh mechanisms and shank mechanisms, which are bilaterally symmetrical and connected with a waist mechanism in turn; imitation human hip joints are arranged at the connection part of the waist mechanism and the thigh mechanisms; imitation knee joints are arranged between the connection parts of the thigh mechanisms and the shank mechanisms; the waist mechanism comprises a waist part connecting plate and flexible connecting plates which are connected with the waist part connecting plate in a bilateral symmetrical manner; the waist mechanism, the left and right thigh mechanisms and the left and right shank mechanisms are provided with flexible connecting bands for connecting the corresponding parts of a human body with the robot; the control system is independent of the mechanism of the robot and is connected with the robot body through data wires for controlling rehabilitation training; and the control system comprises hardware and software, the soft ware comprises a user module, a real-time control module and a rehabilitation effect evaluation module.

The invention discloses permeable recycled aggregate and ceramsite concrete doped with industrial and agricultural solid waste and preparation. The permeable recycled aggregate and ceramsite concrete doped with industrial and agricultural solid waste is characterized in that recycled coarse aggregates and ceramsites are taken as coarse aggregates of concrete, an appropriate amount of pretreated industrial and agricultural solid waste such as industrial waste, agricultural waste, household garbage and the like is taken as an admixture, a cementing agent is prepared from cement, water, a superplasticizer and a reinforcement material, and the materials are mixed with a preset stirring process and preparation method, so that ecological concrete with good mechanical property, permeable property and durability is produced. According to the concrete, the waste utilization rate is up to about 80%, the concrete is environment-friendly, locally available materials can be used, the economic benefit is remarkable, ceramist pore is smaller, and sewage can be continuously and stably treated, so that the concrete is commonly used in water environment comprehensive improvement engineering; and besides, the concrete has light weight, high strength and good water permeability and can be also used in permeable pavement engineering such as a sidewalk, a parking lot and the like as well as plant engineering such as ecological riverway slope protection, roof landscape planting and the like.

The invention discloses a face mage super-resolution method which fuses global features and local detail information. The invention can synthesize a high-resolution face image according to a low-resolution face image based on a sample image. Firstly, a local maintaining mapping algorithm and a radial basic function return algorithm are combined together to get a global high-resolution face image; then a neighborhood reconstruction method is adopted to synthesize a high-resolution face residual image block and consequently form a high-resolution face residual image by combination; finally, the high-resolution face residual image is overlapped to the high-resolution face image to obtain a final super-resolution effect. The technology provided by the invention can synthesize the clearer high-resolution face image, improve the recognition of the face image and have important application significances on video monitoring, face recognition and other aspects.

The invention discloses a graded high-nickel ternary anode material, and a preparation method and an application thereof. The graded high-nickel ternary anode material is prepared by the following method: 1) mixing a high-nickel polycrystalline precursor with anhydrous LiOH and a doping additive, performing sintering, mixing the obtained product with a coating additive, and performing sintering toobtain a high-nickel polycrystalline material; 2) mixing a ternary monocrystalline silicon precursor with a lithium source and the doping additive, performing sintering, mixing the obtained product with the coating additive, and performing sintering to obtain a ternary monocrystalline silicon material; and 3) mixing the high-nickel polycrystalline material with the ternary monocrystalline siliconmaterial, or mixing the mixed material with the coating additive, and then performing sintering. The invention further discloses an application of the graded high-nickel ternary anode material in lithium batteries. The graded material prepared by the method provided by the invention has higher compaction and cycle stability than the single polycrystalline material, has higher capacity than the single monocrystalline silicon, and the gas production and service life problems of the battery can be effectively improved after the grading modification.

The invention discloses a system and a method for tracking and controlling gestures of a spacecraft. The system comprises a gesture measurement component, a gesture controller and a control executive component, wherein the gesture measurement component is used for acquiring gesture information of the spacecraft and outputting a signal having a functional relation with gesture parameters; the gesture controller is used for performing operation, correction and amplification in accordance with a set control law according to the information acquired by the gesture measurement component and a guidance command, and outputting a control signal to the control executive component; the control executive component comprises a magnetic torquer, a bias momentum wheel and a tilt switch control unit; and the tilt switch control unit is used for controlling the rotating speed control quantity of the bias momentum wheel. The system and the method skillfully achieve the fast control ability of a star pitch axis and simultaneously a high-precision complex gyroscopic instrument is not required in use, thus the dependence on angular speed information of the system is remarkably reduced.

The invention discloses a ceramic diaphragm for a lithium ion battery. The ceramic diaphragm comprises a diaphragm base material and a ceramic coating on the surface of the diaphragm base material, wherein ceramic particles having a porous structure and a high specific surface area are selected for the ceramic coating. A preparation method includes the following steps of firstly, evenly mixing ceramic particles, binder and solvent to obtain coating slurry; secondly, evenly coating the surface of the diaphragm base material with the coating slurry, and conducting drying to form the ceramic diaphragm. Quite strong binding force exists between the porous ceramic powder and the binder, and the powder falling phenomenon is effectively avoided; meanwhile, the ceramic diaphragm has high electrolyte wettability and quite strong liquid absorption capacity, the cycle life and rate capability of the lithium ion battery are increased, and excellent electrochemical performance is achieved; in addition, under the same thickness, the mass of the porous ceramic coating is far lower than that of an ordinary ceramic coating, and the energy density of the battery is improved.

The invention discloses an orbital angular momentum vortex wave beam generation apparatus and method. According to the technical scheme, an electromagnetic super-surface structure (3) is formed by M lines and N columns of electromagnetic super-surface reflection units (31) and dielectric substrates (32); a phase-shifting network (4) is formed by the electromagnetic super-surface structure (3) and a metal back plate (2); the metal back plate (2) is positioned on the back surface of the electromagnetic super-surface structure (3), and the metal back plate is also used as an earth plate; a feed source (1) is put in the central axial position of the electromagnetic super-surface structure (3); incident wave from the feed source (1) irradiates on the electromagnetic super-surface structure; and after the incident wave obtains compensated phase position from the electromagnetic super-surface structure, the incident wave is reflected by the phase-shifting network (4) to generate the orbital angular momentum vortex wave beam(5) with an intrinsic mode 1. According to the orbital angular momentum vortex wave beam generation apparatus and method, the problems of complex technical structure, high cost, beam divergence and low efficiency in the prior art are solved; and the apparatus and method can be used for information transmitting and receiving in the communication technology, and the communication capacity can be increased.

The present invention provides a video encoding device in which a capacity of a binary data storing unit is small, a size of the video encoding device is small, a video signal can be processed in real time, and reduction in quality of images generated from the eventually obtained data can be prevented. The video encoding device according to the present invention includes: a video encoding unit which encodes a video signal; a binarization unit which binarizes an encoded value obtained from the video encoding unit; and an entropy encoding unit which subjects entropy encoding to binary data obtained from the binarization unit. Here, the video encoding unit encodes the video signal based on a characteristic of the binarization performed by the binarization unit, so that an amount of binary data obtained from the binarization unit by binarizing the encoded value that is encoded based on the characteristic is less than an amount of binary data obtained by binarizing an encoded value that is encoded without being based on the characteristic.

The invention belongs to the field of agricultural biotechnology, particularly relating to a method for preparing premixed dry powder of a plant tissue culture medium. The method for preparing the premixed dry powder of the plant tissue culture medium comprises the following steps of: (1) preparing trace mineral elements, organic matters and iron salts into mother liquors respectively; (2) adding agar into the trace mineral element mother liquor, the organic matter mother liquor and the iron salt mother liquor respectively, boiling into solutions, cooling, then placing in a thermostat for 6 to 7 days and drying, and crushing and sieving; (3) weighing each macroelement composition, placing in the thermostat and drying, grinding, sieving and uniformly mixing; and (4) uniformly mixing the prepared powder according to a formula, and drying and storing at room temperature. The plant tissue culture medium prepared with the method has the advantages of stable property, light weight, no need of low-temperature storage, convenience in storage, transportation and use and contributes to being used by most of laboratories and tissue culture enthusiasts.

The invention discloses a gasoline deep desulphurization and olefin reduction method, comprising that the gasoline raw material and hydrogen are contacted with hydrogenation absorption desulphurization and olefin aromatization difunctional catalyst to remove sulfur in the gasoline and reduce the olefin content in the gasoline product. The method of the invention can produce gasoline product with the sulfur content lower than 50 micrograms per gram, and can further produce gasoline product with the sulfur content lower than 10 micrograms per gram while the olefin content is lower than 20v%, and meanwhile the antiknock quality index loss is low. The method of the invention can be applied to deep desulphurization and olefin reduction process of FCC gasoline, catalytic pyrolysis gasoline, coker gasoline, pyrolysis gasoline and pressure gasoline or the mixed gasoline raw material thereof.

The invention relates to an eyepiece, in particular to an eyepiece used in a head-mounted display, belonging to the field of optical technique. The eyepiece is formed by six pieces of lenses, and a lens screen, the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are sequentially arranged from the observing side of human eyes and the display device side along the direction of an optic axis in a coaxial way; the exit pupil diameter of the eyepiece is larger than that of the common eyepiece, the eye relief is long, the angle of view field is large, and the focal distance and F / # are small; furthermore, illuminance of image plane is evener, so that the eyepiece especially meets the requirements of the head-mounted display.

The invention provides a motion-decoupled rope-driven non-individual body mechanical arm and a robot. The mechanical arm comprises mechanical arm sleeves, traction rope sets and knuckles, wherein the number of the mechanical arm sleeves, the number of the traction rope sets and the number of the knuckles are more than one. The mechanical arm sleeves are sequentially arranged, and the adjacent mechanical arm sleeves are hinged to form a mechanical arm body through the knuckles. The front end of the mechanical arm body is used for being connected with a rope-driven base. The traction rope sets are used for driving the corresponding knuckles. The traction rope sets and the knuckles are in one-to-one correspondence. One end of each traction rope set is connected with the corresponding knuckle, and the other end of each traction rope set is used for being connected with the rope-driven base after sequentially penetrating through through-holes in multiple knuckle rope guiding discs arranged on the front side of the corresponding knuckle. The mechanical arm has multiple degrees of freedom, is thin and long in body type and suitable for survey and operation in narrow spaces, and has large application potential.

A composite material of sandwich structure integrating loading, heat insulation and ablation and the manufacturing method are characterized in that an integrated pre-forming body is acquired by puncture and suture of the reinforcing material of a bearing layer, the reinforcing material of an ablating cover, and a heating insulation layer positioned between the two layers; an epoxy resin system and a phenolic resin system are injected simultaneously into a vacuum-pumped mould, in which the integrated forming body is pre-placed, by two sets of RTM injection systems respectively, then, the reinforcing materials of the bearing layer and the ablating layer are soaked by epoxy resin and phenolic resin respectively; and the composite material of sandwich structure integrating loading, heat insulation and ablation can be obtained by solidified molding after mould filling. The invention has the advantages that the composite material of sandwich structure integrating loading, heat insulation and ablation is put forward and can be integrally formed by one-time operation, the function of the interlayer between every layer of the composite material is enhanced greatly, the integrality is good; the stratifying and peeling of the composite can be reduced effectively, and the products have good designable property and can be widely applied to the structural parts of aerospace which need heating insulation and thermal protection.

The present invention relates to method for controlling the output power of a wind turbine having maximum energy capture in wind power generation field. When the wind speed varies between a cut-in wind speed and a rating wind speed, a speed change control method is adopted to track the best power curve and to obtain maximum power; when the wind speed varies between the rating wind speed and a cut-out wind speed, a blade change control method is adopted to regulate the change of the blade distance angle for the blade and hold the rating power invariable. The present invention can select different control method based on the wind speed to realize the maximum power output for the wind turbine, thereby can improve the wind energy using efficiency for the generator unit and ensure the stability and reliability of running of the wind turbine.

The invention discloses a cutting-stirring friction welding composite processing device for a floating double-shaft-shoulder double-stirring needle and a manufacture method thereof, and particularly relates to a combined or composite processing device capable of simultaneously carrying out milling or cutting processing and stirring friction welding processing and a method thereof. The cutting-stirring friction welding composite processing device for the floating double-shaft-shoulder double-stirring needle integrates a cutting system or a milling system, a stirring friction welding system, a forced cooling system, a gas protection system, a temperature sensing system, a pressure induction system, a milling liquid supply system and a sensing-free system. The cutting-stirring friction welding composite processing device has functions of temperature control, gas protection, pressure detection, cooling liquid protection, milling head replacing and floating double-shaft-shoulder self-supporting stirring friction welding. The method for carrying out cutting-stirring friction welding composite processing on workpieces can meet strength requirements of mechanical processing of ferrous light metal materials, carbon steel materials and alloy steel materials. The cutting-stirring friction welding composite processing device for a floating double-shaft-shoulder double-stirring needle and the manufacture method of the cutting-stirring friction welding composite processing device reduce manufacture procedures, save processing cost, have the advantages of being high in efficiency, excellent in quality, high in stability and saving in energy, break through limitation of conventional machining technology, form a new method and a new thought for machinery processing, and have wide application prospects in industries of heating, air conditioners, ice manufacture, freshness keeping, medicine preparation, construction, aquatic products and foods.

An image pickup unit is disposed so as to be able to obtain a scan projection image of an inspection subject from each of a vertical direction and a horizontal direction. An X-ray absorption coefficient of an object in the inspection subject is obtained from the vertical scan projection image and the horizontal scan projection image. It is determined whether there is a threat in the inspection subject on the basis of the X-ray absorption coefficient. Furthermore, a CT image is obtained by moving the image pickup unit around the inspection subject. It is determined whether there is a threat in the inspection subject, on the basis of the CT values of the CT image.

The invention relates to a visual natural gas hydrate sediment mechanical property testing apparatus, belonging to the field of the measurement of basic natural gas hydrate physical properties. The visual natural gas hydrate sediment mechanical property testing apparatus mainly comprises an automatic-pressing triaxial apparatus main machine, an axial loading system, a confining pressure control system, a backpressure control system, a temperature control system, a data collection system and an X-ray CT (computed tomography) imaging system. The low-temperature high-pressure hydrate triaxial apparatus is organically combined with the X-ray CT imaging system, so that the testing on macro and micro mechanical properties of natural gas hydrate sediments can be synchronously carried out. The visual natural gas hydrate sediment mechanical property testing apparatus can simulate a stress state of a real reservoir stratum, macro and micro mechanical property data of the natural gas hydrate sediments can be acquired, the important significance on disclosing a deformation mechanism of the natural gas hydrate reservoir stratum and a triggering mechanism of geological hazards such as submarine landslide caused by the decomposition of natural gas hydrate can be realized, and an important guiding function for safely and high efficiently exploiting the natural gas hydrate can be realized.

The invention relates to a twisted line which comprises a plurality of carbon nano tubes that are connected with each other end to end by van der waals force, wherein the twisted line further comprises conducting materials covering on the surfaces of the carbon nano tubes.

The invention discloses a lower-limb-boosting exoskeleton robot comprising an upper body structure, leg structures, knee joints and hip joints. Each leg structure comprises a thigh structure and a shank structure. Each hip joint is connected with the upper body structure and the corresponding thigh structure. Each knee joint is connected with the corresponding thigh structure and the corresponding shank structure. The upper body structure comprises a waist assembly, and the size of the waist assembly can be adjusted. The waist assembly comprises hip connecting blocks connected with the hip joints. Each knee joint comprises a first thigh connecting seat, a second shank connecting seat and two first motors, wherein the first thigh connecting seat is connected to the corresponding thigh structure, the second shank connecting seat is connected to the thigh connecting seat in a rotary manner, and the two first motors are connected to the first thigh connecting seat and drive the second shank connecting seat to rotate relative to the first thigh connecting seat.

The invention discloses a spatial six-degree-of-freedom vibration measuring and damping vibration attenuating method. The method comprises the following steps of: 1) erecting six-displacement-sensor parallel measuring and damping vibration attenuating mechanism; 2) fixing a detected motion object and a fixed platform; 3) obtaining a motion variation rule by using an expansion variation displacement time of an expansion pull rod, and obtaining a vibration rule of the detected motion object by using a measurement algorithm with a positive solution; 4) obtaining a damping value of a six-degree-of-freedom controllable damper required by the vibration by using a damping vibration attenuating algorithm; and 5) adjusting the damping value of the six-degree-of-freedom controllable damper to a value obtained by the damping vibration attenuating algorithm. According to the invention, six-degree-of-freedom measurements of three vibration displacements and three vibration angles of the motion object at the same measurement point are achieved by using one set of mechanism; meanwhile, the vibration control of the motion object can be achieved; and the spatial six-degree-of-freedom vibration measuring and damping vibration attenuating method disclosed by the invention has the advantages of high accuracy, simple structure, good flexibility, strong adaptability, wide application range and the like.

The invention discloses a bogie for a high-speed rail wagon. The bogie comprises a framework, wherein two transverse ends of the framework are connected with a wheel set through two single-stage suspension systems respectively; a double-stage suspension system and a foundation brake device are arranged on the framework; and the front side and the rear side of the framework are provided with an anti-snakelike damper respectively. By the bogie, two-grade requirements that the shaft weight is 16.5t when the speed of the wagon is 200km / h as well as the shaft weight is 18t when the speed of the wagon is 160km / h can be met simultaneously; and the bogie has the remarkable characteristics of simple structure, high popularity and reliable performance.

The invention provides a double-spray-nozzle 3D printing system and method of a thermoplastic resin base continuous fiber prepreg material. Double spray nozzles include a thermoplastic resin base continuous fiber prepreg material printing spray nozzle and a thermoplastic pure resin printing spray nozzle. The thermoplastic resin base continuous fiber prepreg material printing spray nozzle has the functions of thermoplastic resin base continuous fiber prepreg material feeding, guiding, clipping, heating and printing compaction, and all functions can be controlled through G codes. By the adoption of the method, the optimal design of a structural part to be printed is conducted according to the practical load condition, then 3D printing of the thermoplastic resin base continuous fiber prepreg material is conducted according to a mechanical optimized structure, and therefore the printed structural part enables thermoplastic resin base continuous fibers to achieve the highest utilization ratio, the consumption of raw materials is reduced, and the processing cost is reduced. In addition, the design of the double spray nozzles can achieve printing of parts with cantilever structures, and the cantilever structure portions can be printed and supported by the use of the thermoplastic pure resin printing spray nozzle.

The invention discloses a control method for increasing asymmetrical fault ride-through capability of a wind power system. In the method, a super capacitance energy storage system is assessed between a machine side rectifier and a net side inverter on the basis of the prior art. On the control aspect, besides the control for the machine side rectifier and the net side inverter, the control for a super capacitance energy storage system is additionally provided in the method. Through controlling the coordination of the machine side rectifier and the net side inverter, a unit can realize the maximum wind energy tracking, grid-connected active and reactive power adjusting and grid-connected three-phase current symmetry and the stability of the voltage for a direct-current busbar between the machine side rectifier and the net side inverter when a power grid is normal is assured. The additionally provided super capacitance energy storage system is further controlled, the voltage stability of the direct-current busbar of the unit while the power grid has asymmetrical faults is assured, especially the grid-connected three-phase current symmetry is assured and the double power frequency ripple wave of the voltage of the direct-current busbar while the power grid has asymmetrical faults is removed so that the asymmetrical fault ride-through capability of the wind power system is enhanced.