159results about "Camouflage devices" patented technology

The invention belongs to the field of protective materials, and particularly relates to a 3D printing high-performance porous silicon carbide ceramic wave-absorbing material and a preparation method and application thereof. The extrusion type 3D printing technology is combined with the reaction sintering and impregnation technology, the complex structure forming and the high-performance wave absorbing effect are achieved, the material prepared through the method has excellent mechanical performance and wave absorbing performance at the same time (the bending strength is larger than 15 MPa, the reflection loss minimum value at the frequency band of 2-18 GHz is larger than-25 dB, and the absorption bandwidth is larger than 3 GHz), and the material has the good application prospect. The method is suitable for military stealth engineering and other fields.

The invention belongs to the technical field of textile materials, and relates to an environment-adaptive multi-spectrum camouflage cloak and a preparation method thereof. Comprising a cloak body, the cloak body is made of composite fabric, the composite fabric sequentially comprises a wear-resistant layer, a waterproof layer and a close-fitting layer from outside to inside, and the surface of the wear-resistant layer is sequentially coated with a thermochromic dye layer, a far infrared plating layer and a visible light hiding layer from bottom to top; the thermochromic dye layer is formed by compounding disperse dye and bistable thermochromic microcapsules, and the visible light stealth layer is prepared from photonic crystal gel; and the far infrared plating layer is prepared from an indium tin oxide film. The desert camouflage is switched below 5 DEG C, the woodland camouflage is switched above 60 DEG C, and different regional environments are matched; according to efficient multi-spectrum camouflage, the color difference between the visible light band and the background is smaller than or equal to 1.95, three emissivity levels are formed in the infrared band, and the thermal imaging detection probability is reduced.

A method for making a reversible or adaptable camouflage scheme on a vehicle comprises first, second and third steps. The first step is to apply a first, base, coat of paint of a first colour on the m

The invention is a covering device that acts as both a visual camouflage and as a thermal blocker to cover people and equipment (e.g., vehicles). Specifically, the covering device effectively reduces and / or prevents thermal, infrared, and visual detection of any subject (e.g., person or equipment) positioned under the device. The covering device includes a unique arrangement of apertures that has been surprisingly shown to reduce and diffuse both the heat and visual signature of the subject.

The invention provides a miniature aircraft skin with energy collection and multispectral stealth functions, and belongs to the technical field of energy collection and spectral stealth, the miniature aircraft skin is composed of a periodic Al2O3-W multi-layer structure, and the multi-layer structure is formed by stacking a top oxidation film layer and N unit layers; each unit layer comprises a W layer and an Al2O3 layer, energy collection and multispectral camouflage are combined, the skin not only shows efficient photothermal conversion performance, but also meets visible light, laser and infrared compatible camouflage requirements, and the performance of a miniature aircraft in a complex environment is effectively improved; the problems that energy supply of a micro aircraft is limited and unstable, and a traditional camouflage structure is difficult to be compatible with visible light, infrared camouflage and laser camouflage multispectral stealth requirements are solved, and the manufacturing cost is reduced.

The invention relates to a method and a system (10) for displaying a viewing direction-dependent view for a predetermined location. The predetermined location, including its surroundings, is captured from one or more viewing directions (15), with or without one or more objects (12) at the location. One or more objects (12) at the predetermined location are then obscured by a three-dimensional display device (20). Based on the images captured in the preparation phase (200), a display model is calculated. This model allows the predetermined location, including its surroundings, to be displayed using the light-activated elements (22) of the display device (20) for each of the one or more predetermined viewing directions (15) or for each viewing direction (15) within the one or more predetermined solid angles. In the absence of one or more objects (12), the location can be displayed from the respective viewing direction (15). In an application phase (206) a momentary viewing direction (15) is determined, a representation of the predetermined location together with its surroundings in the absence of one or more objects (12) is determined from the momentary viewing direction (15) by means of the display model and is displayed by means of the light-active elements (22) of the display device (20) in relation to the momentary viewing direction.

The application relates to the technical field of intelligent camouflage, and provides a flexible electrochromic bionic structure and a preparation method thereof, which comprises the following steps: preparing a reflective resonant cavity composed of a reflective metal layer and an electrochromic layer on a flexible microporous substrate. The reflective resonant cavity forms an initial camouflage color, then the optical constant of the electrochromic layer is changed by applying a voltage to change the camouflage color, visible light camouflage is realized, and the infrared emissivity is adjusted to eliminate / reduce the difference in infrared radiation characteristics between the target and the background, so that infrared camouflage is realized. Therefore, the electrochromic effect is improved.

The utility model relates to the technical field of camouflage nets, and discloses a sandy soil camouflage toggle clip camouflage net structure which comprises a bottom net, a color strip layer is arranged at the top of the bottom net, a plurality of groups of camouflage strips are arranged on the color strip layer, a plurality of groups of toggle clips are arranged at the top of the bottom net, and the toggle clips are used for limiting and fixing the camouflage strips. According to the sandy soil camouflage toggle clip camouflage net structure, the camouflage strips on the colored strip layer can be fixed through the toggle clip piece, stable supporting and fixing points are provided for the camouflage strips, the toggle clip can tightly grasp the camouflage strips under various complex environment conditions no matter whether the camouflage strips are lightly fished by breeze or attacked by strong wind, the camouflage strips are effectively prevented from flying around, and the camouflage net structure is simple in structure and convenient to use. In this way, the camouflage net always keeps complete and stable appearance in the long-time use process, and the reliability and durability of the camouflage effect are greatly improved.

The application relates to the technical field of camouflage smoke discharging, and discloses a gas-spraying type smoke camouflage device which comprises a storage tank and a smoke spraying pipe, an activity cavity is arranged in the storage tank, a transmission gear wheel is rotationally connected to the inner side wall of the activity cavity, a first driven gear wheel and a second driven gear wheel are also rotationally connected to the inner side wall of the activity cavity, the first driven gear wheel and the second driven gear wheel are connected in mesh with the transmission gear wheel, a first driven rod and a second driven rod are fixedly connected to one end of the first driven gear wheel and the second driven gear wheel respectively, and helical blades are fixedly connected to the surfaces of the first driven rod and the second driven rod. The device can rapidly stir and mix the smoke agent, avoids stratification of the smoke agent, guarantees full combustion of the smoke agent, avoids backflow of the smoke agent, rapidly forms a smoke screen, forms camouflage for a transport vehicle, and guarantees safety of the transport vehicle.

The invention discloses a crawler-type remote control camouflage protection smoke screen vehicle and a working method, the crawler-type remote control camouflage protection smoke screen vehicle comprises a chassis, a smoke generating device and a box body, the chassis is a crawler-type mobile vehicle, the smoke generating device and the box body are both arranged on the chassis, and the smoke generating device is arranged in front of the box body; the fuming device is installed on the chassis through a left-right rotating head driving device and an up-down rotating head driving device, a turbojet engine and a spraying pipe are arranged in the fuming device, and the spraying pipe is arranged at the front end of the turbojet engine; a left-right rotating head limiting switch is arranged on the left-right rotating head driving device, and an up-down rotating head limiting switch is arranged on the up-down rotating head driving device; a smoke master control system is arranged in the box body, and the smoke generating device, the moving mechanism, the left-right rotating head driving device and the up-down rotating head driving device are all connected with the smoke master control system. The problems that an existing smoke screen vehicle is low in rapid transfer capacity on complex terrains and cannot rapidly adapt to environmental changes are solved.

A yarn structure (14) is provided for use in a camouflage net. It comprises first (3), second (4) and third (5) yarn elements comprising, respectively, polymer, metal and carbon- or graphene-based material. The yarn elements are combined to form the yarn structure. The second yarn element (4) is present in an amount sufficient to provide radar scattering capabilities. The third yarn element (5) is present in an amount sufficient to reduce radar reflectivity of the yarn structure, compared to a yarn structure without the third yarn element.

This invention discloses a modular full-spectrum high-efficiency electromagnetic shielding flexible fabric and its preparation method, belonging to the field of electromagnetic shielding material design and preparation. The preparation method of this invention includes the following steps: (1) using a magnetron sputtering system to perform metal deposition treatment on the fabric to obtain a flexible conductive fabric A; (2) using vacuum coating technology to perform metal deposition treatment on the surface of a polymer film to obtain a high-toughness conductive film B; (3) mixing carbon-based microwave absorbing material and polymer with solvent uniformly and curing to obtain a microwave absorbing layer C of a certain thickness; (4) arranging and encapsulating the functional modules obtained in steps (1), (2), and (3) in a specific arrangement to obtain the modular full-spectrum electromagnetic shielding flexible composite fabric.

The application discloses a lotus leaf carbon-based iron-cobalt composite hollow broadband wave-absorbing material and a preparation method and application thereof. The composite material takes lotus leaves as a skeleton material, and lotus leaf biochar is prepared after high-temperature treatment. Then, the lotus leaf biochar is reacted with acetylacetone iron and acetylacetone cobalt, and then high-temperature treatment is carried out to prepare a CoFe@CoFe2O4 / C composite material. The preparation process is relatively simple, common equipment is required, and the reaction condition is easy to control. The raw material cost is low, the energy consumption is low, and the large-scale production and wide application are facilitated. The prepared composite wave-absorbing material has the advantages of strong absorption capacity and wide effective absorption frequency band, and can be applied to the absorption of electromagnetic waves.

The invention discloses a hyperspectral camouflage fiber fabric based on a flocking technology. The hyperspectral camouflage fiber fabric comprises an ultra-black fluff layer, an adhesive layer, a near-infrared absorption layer and an ultra-black base cloth layer which are sequentially arranged from top to bottom. Through a multi-layer synergistic structure, the fitting degree of the material and an ocean background spectrum at the wave band of 400-2500nm reaches 0.91 or above, the characteristics of weak reflection of visible light and strong absorption of near infrared light are reproduced, the problem of poor matching precision is solved, hyperspectral reconnaissance is avoided, and the concealment of ocean equipment is improved. The invention has the advantages of strong environmental adaptability, easy mass production, humidity and heat resistance of grade 1, no abnormity at-20 DEG C to 50 DEG C, and color fastness to sunlight of grade 5, and adapts to complex marine environment; based on a mature flocking technology, complex equipment is not needed, large-scale production can be achieved, and stability and economical efficiency are both considered.

A building is disclosed and may include a truss-framed building structure, at least one of an internal shell and an external shell, and a suspended netting system disposed above and coupled to the truss-framed building structure. The at least one of the internal shell and the external shell may be coupled to the truss-framed building structure.

The application discloses graphene-MXene composite aerogel as well as a preparation method and application thereof. The preparation method of the graphene-MXene composite aerogel comprises the following steps: 1) preparing an oxidized graphene-MXene water dispersion; 2) preparing an oxidized graphene-MXene frozen block; 3) preparing an oxidized graphene-MXene composite aerogel; and 4) annealing the oxidized graphene-MXene composite aerogel. The graphene-MXene composite aerogel has a multi-layer gradient structure, excellent compression resilience, dynamic infrared stealth and wide-band microwave absorption dual functions, and the preparation method is simple, so that the graphene-MXene composite aerogel can be widely applied in the fields of electronic communication, aerospace and the like.

The invention discloses a beetle elytra-imitated interlocking structure, a metamaterial plate comprising the beetle elytra-imitated interlocking structure and a composite armor system, and belongs to the field of multifunctional advanced protective materials. The interlocking structure comprises a plurality of functional elements arranged in a planar array, the adjacent functional elements are mechanically connected through geometric interlocking interfaces, the contact surfaces of the geometric interlocking interfaces are in a non-chemical bonding state and can generate relative dislocation under an impact load, and the geometric interlocking interfaces are in a non-chemical bonding state. Each functional element is integrally prepared from a polymer-based composite material dispersed with an electromagnetic loss filler, the interior of each functional element is of a three-dimensional porous micro-lattice structure with a negative Poisson's ratio effect, and the porosity and / or cell size of each three-dimensional porous micro-lattice structure are / is changed in a gradient manner in the thickness direction of the corresponding functional element. The metamaterial plate and the composite armor system using the interlocking structure can effectively inhibit structural layering under an impact load, can actively improve anti-penetration capability, and also have an excellent broadband electromagnetic wave absorption function.

The present invention relates to a graphene-based coating composition suitable for electromagnetic interference shielding at frequencies between 30 MHz and 300 GHz, the composition comprising graphene nanoplates.The present invention also relates to a method of applying the ink composition as a coating to a substrate and to uses of the ink composition.

The invention belongs to the technical field of infrared stealth, camouflage and information transmission, and particularly discloses an active infrared stealth, camouflage and information transmission device and a control method thereof.The active infrared stealth, camouflage and information transmission device comprises arrayed thermoelectric device units, and each thermoelectric device unit is independently controlled; the upper surface of the thermoelectric device array is covered with a layer of black porous thin film with low thermal conductivity and high light reflectivity for realizing uniform surface radiation; the bottom layer optimization circuit and control circuit module can independently control the cold and hot change of the array thermoelectric device unit and is used for realizing infrared stealth, camouflage and information transmission; cooling fins are attached to the bottoms of the thermoelectric devices, so that the cooling capacity of the thermoelectric devices is improved, and the working temperature range of the thermoelectric devices is widened; due to the bendable paper-cut structure, infrared stealth, camouflage and bending and wearable application of an information transmission device are achieved; the device is simple in structure, high in response speed and wide in working temperature range, and can be used for infrared stealth scenes such as personnel, vehicles and unmanned aerial vehicles.

According to an exemplary aspect of the present invention, there is provided a military decoy element (100) comprising at least two profiles (110, 120), the at least two profiles (110, 120) being elongated along an extended dimension, connected to one another so as to be aligned with the extended dimension, and configured to be folded between an operational state and a folded state, each of the profiles (110, 120) comprising a plurality of profile panels (114, 115, 116, 117) hingedly attached to one another to form a closed, predetermined perimeter when in the operational state.

The invention discloses a high-temperature-resistant material with high infrared emissivity and radar stealth performance and a preparation method of the high-temperature-resistant material, and relates to the technical field of new material preparation. The preparation method comprises the following steps: respectively weighing a proper amount of RE (NO3) 3.6 H2O, A (NO3) 2.4 H2O and NbCl5 according to the molar ratio of RE: A = (1-x): x and the molar ratio of (RE + A): Nb = 3: 1, preparing (RE1-xAx) 3NbO7 precursor powder by a chemical coprecipitation method, and sintering the precursor powder at high temperature to form the (RE1-xAx) 3NbO7 material with high infrared emissivity and high-temperature radar stealth performance. The (RE1-xAx) 3NbO7 material with high infrared emissivity and high-temperature radar stealth performance prepared by the invention has the advantages of high use temperature, good high-temperature stability, good radiation heat dissipation effect, excellent high-temperature radar stealth performance and the like.

The invention relates to a component (13) with a carrier material (14) and a coating (17) applied to the carrier material (14) for influencing a heat signature (12) of the component (13), wherein the coating (17) comprises an adhesion promoter (18), wherein the coating (17) comprises nanotubes (19, 20, 22), wherein a first set of nanotubes (19) is embedded partially in the adhesion promoter (18), wherein a second set of nanotubes (22) is arranged entirely outside the adhesion promoter (18), and wherein nanotubes (22) of the second set of nanotubes (22) are connected to nanotubes (19) of the first set of nanotubes (19, 20).

The invention discloses a high-breathability imitation green leaf material and a preparation method thereof, and belongs to the technical field of hyperspectral camouflage. The preparation method of the high-air-permeability imitated green leaf material specifically comprises the following steps: adding cationic dye, moisture absorption salt and polyacrylonitrile into a solvent, and stirring at normal temperature to obtain a spinning solution; the spinning parameters are as follows: the voltage is 10 to 50kV, the spinning distance is 5 to 10cm, the liquid supply speed is 0.5 to 10mL / h, the spinning environment temperature is 10 to 40 DEG C, and the spinning environment humidity is 5 to 30 percent. The high-air-permeability imitated green leaf material has reflection spectrum characteristics similar to those of natural green leaves, a large number of pore channels are kept, the air permeability, wearing comfort and other performance of camouflage equipment are improved, and the high-air-permeability imitated green leaf material is expected to meet the urgent requirements of the fields of field tents, individual clothes and the like for breathable and comfortable hyperspectral camouflage textiles.

The invention discloses a multi-band compatible camouflage metasurface based on a Fabry-Perot cavity loss matching network, the metasurface comprises a Fabry-Perot cavity at the top and a wave absorber at the bottom, and the Fabry-Perot cavity comprises a digital camouflage layer, a thermal insulation layer and a first dielectric layer which are arranged from top to bottom. The wave absorber comprises a first loss layer, a second dielectric layer, a second loss layer, a third dielectric layer and a composite material layer which are arranged from top to bottom, and the surface of the digital camouflage layer is provided with a pixelated camouflage pattern; the Fabry-Perot cavity simultaneously has self-adaptive infrared camouflage with thermal shielding and thermal compensation performance and dominates high-frequency radar wave absorption, the first loss layer and the second loss layer dominate medium-frequency radar wave absorption, and the second dielectric layer, the third dielectric layer and the composite material layer dominate low-frequency radar wave absorption. The invention further provides a preparation method of the metasurface, through the synergistic effect of the multi-layer structure, compatibility of visible light camouflage, infrared camouflage and full-band radar wave absorption is achieved, and the camouflage requirement in the complex environment is met.

A thermal infrared reflective coating formulation for use as camouflage. The formulation includes a thermal infrared reflective flake and a thermal infrared transparent material. The thermal infrared transparent material includes a polyolefin binder material.

The invention discloses a one-key automatic lifting folding type camouflage net retracting and releasing device and a control method, and belongs to the technical field of vehicle-mounted equipment camouflage. The device aims at solving the problems that an existing camouflage net is low in efficiency and low in response speed due to the fact that the camouflage net depends on manual erection and withdrawal. The device mainly comprises a chassis vehicle, a sliding rail assembly fixed to a vehicle frame, a camouflage net folding device arranged on the sliding rail assembly in a sliding mode, a downward turning device installed at the vehicle bottom and a control assembly. The camouflage net folding device drives a folding support through a scissor fork linkage mechanism, and automatic spreading and folding storage of the camouflage net are achieved. The turning-down device can lift the whole folded mechanism to be in butt joint or turn down to be hidden at the bottom of the vehicle. Through one-key operation of the control assembly, full-automatic operation of lifting, unfolding, folding and downward turning can be completed in sequence. Manual operation is replaced by an automatic mechanical structure, the laying and withdrawing time of the camouflage net is greatly shortened, and the battlefield response speed, survivability and maneuvering concealment of equipment are improved.

The invention discloses a moving target camouflage method and system based on a digital coding metasurface material. The method comprises the following steps: collecting a target position point and corresponding environmental background electromagnetic scattering data according to a determined moving path; installing a digital coding material on the surface of the moving target, searching an optimal digital code corresponding to each target position point, and enabling the difference between the electromagnetic scattering data on the surface of the moving target and the electromagnetic scattering data of the environment background to be smaller than a preset threshold value; and obtaining a position point where the moving target moves according to the moving path, finding a corresponding optimal digital code according to the coordinate of the position point, and controlling the digital coding material to operate according to the corresponding optimal digital code. By controlling the digital coding material installed on the surface of the moving target to operate, the moving target can simulate the background electromagnetic environment in real time in the moving process, and the electromagnetic camouflage effect in the moving process is achieved.

The invention relates to a visible-infrared compatible camouflage device, which sequentially comprises a first end metal absorption layer, a second end metal absorption layer, a third end metal absorption layer and a fourth end metal absorption layer from an incident side to a support substrate, a dielectric multilayer film stack; a second end metal absorption layer; a support substrate; wherein the dielectric multilayer film stack comprises one or more dielectric materials; under the conditions of normal incidence and room temperature, the device realizes high absorption at the wavebands of 1.5-2.5 microns and 5-8 microns, and realizes low emission at the wavebands of 3-5 microns and 8-14 microns. Compared with the prior art, the method has the advantages that multiband compatible camouflage can be achieved, an intelligent algorithm is applied, optimization convergence is fast, design performance is improved, the structure is clear, manufacturability is high, and large-scale production is easy.

The utility model belongs to the technical field of camouflage, and relates to concave-convex cloth for preventing radar investigation. Comprising a plurality of first units which are connected with one another, each first unit comprises a plurality of mixed yarn sets in the longitude direction and the latitude direction, first conductive yarn sets and high-shrinkage yarn sets are arranged on the two sides of each mixed yarn set from near to far, and the high-shrinkage yarn sets are arranged at the ends of the outermost sides of the first units in each direction; the mixed yarn set comprises a second conductive yarn set, and common polyester yarn sets are arranged on the two sides of the second conductive yarn set. The undulation degree of the wrinkles of the cloth cover can be adjusted by controlling the arrangement distance of the high-shrinkage yarns, the larger the undulation degree of the wrinkles is, the better the anisotropy of the wrinkles is, the better the radar scattering effect is, and the better the anti-radar effect is. Compared with the prior art that a compact metal layer is coated on the surface of the camouflage cloth, the camouflage cloth is lighter and better in radar wave attenuation effect.

The invention discloses a camouflage confrontation generation method and device based on environment style migration. The method comprises the following steps: step 1, constructing an environment scene simulation platform; 2, collecting a multi-environment simulation data set; step 3, performing differential neural renderer mapping; 4, environment style migration fusion; 5, optimizing a composite loss function; step 6, performing end-to-end texture optimization; 7, performing secondary optimization based on physically realizable camouflage textures: performing reverse optimization on the camouflage texture generation model by introducing constraint functions related to printing, pasting and materials; and 8, outputting the camouflage texture. According to the method, by optimizing the resistance loss, the recognition performance of the detector is remarkably reduced, and the camouflage deception effect is better.