213 results about "Cylindrical array" patented technology

A roofing membrane retainer is provided having a cylindrical plate. The cylindrical plate has a central aperture for receiving a fastener. The plate also includes a pair of concentric inner and outer raised reinforcing ribs and a plurality of scoop-shaped projections. The scoop-shaped projections extend downwardly from the plate in concentric inner and outer cylindrical arrays. The inner cylindrical array of projections and the outer cylindrical array of projections are radially outward of the inner rib and the outer rib, respectively. The projections each comprise a scoop with a base periphery having an open mouth edge and a remaining peripheral portion contiguous with the plate. The projections in each array are spaced equidistance about the plate. The mouth edge of adjacent projections are oriented in alternating radial inward and outward directions.

A surveillance apparatus (100) is provided, said apparatus including a linear sub-array (101) of N omnidirectional transmitter elements (103) and a planar sub-array (102) of M receiver elements (104). A plurality of the transient elements (105) are generated by separating out at each of the receivers (104) the signals transmitted from the antenna elements (103) of the transmitter sub-array (101). This allows the geometry of each path (from each transmitter antenna element, to the point being imaged and back to the receiver antenna elements) to be converted to a delay or phase shift to focus on the particular point being imaged. The transient elements (105) form a cylindrical array (106) at the mid points between transmitter and receiver sub-arrays. Such a configuration enables a full 360 degrees of cover in azimuth and typically + / −60 degrees in elevation.

The invention discloses a phase-control focusing ultrasonic source device, comprising a plurality of transducer array elements used for emitting ultrasonic and a bearing part used for bearing the transducer array elements. The transducer array elements are in cylinder shape; a piezoelectricity wafer on the top of the array element can be in round convex shape or round concave shape, or the top of the cylindrical array element is provided with a round piezoelectricity flat piece as well as an acoustic lens; the bottom of the array element is provided with a base which is bonded into a whole with the piezoelectricity wafer; the bearing part is a sphere concave surface; all the transducer array elements are born to the bearing part to lead all the piezoelectricity wafers to be arranged in sphere concave surfaces; the plurality of transducer array elements are connected with a phase control device which adjusts the phases of all array element emitting signals by using electronic technology, thus adjusting focus position and focusing direction. The invention has the advantages of reinforcing the focusing performance of the sphere phase-control arrays, being used for high-strength focusing ultrasonic therapy equipment, only destroying tumor tissue without damaging normal tissue, thus improving therapeutic effect.

A projectile launcher has a magazine of launching chambers for holding a plurality of projectiles at the launcher's front end. The projectiles are launchable by the delivery of a blast of compressed air through each chamber's respective air inlet. The air inlets are uniformly spaced in a substantially cylindrical array about the magazine. A piston with a handle is adjacent to the rear end of the launcher body. The piston has a longitudinal axis coaxial with the cylindrical array, and the piston is movable in back-stroke and fore-stroke motions along that axis for inhaling air into the launcher during the back-stroke and exhaling air from the launcher though one of said air inlets in blasts of compressed air during the fore-stroke. A rotatable diverter directs the blasts to one of the air inlets individually and sequentially upon successive backstroke and fore-stroke cycles of the piston.

An array coil for sensing signals in magnetic resonance experiments incorporates the traditional loop-butterfly array elements at spaced positions along an axis of the sample with additional stacked twisted loops and / or twisted butterfly elements. The twisted loop and twisted butterfly elements are centered along between the standard loop-butterfly array elements. The twisted array elements are naturally isolated from both the loop and butterfly. Alternatively, for a two dimensional mesh array of loop elements, additional twisted loop array elements are added with both longitudinal and transverse orientations, again centered between loop elements. The goal is to allow separation of loop and / or butterfly elements of linear (Spine), 2D planar arrays (Cardiac) or cylindrical arrays of curved array elements (Head), for improved parallel MRI capabilities such as the SENSE or SMASH techniques, but to recover the SNR lost in between the elements and improve the g-factor of the total array with additional orthogonal array elements.

The present invention relates to an omnidirectional base station antenna arrangement with a number of antenna elements and a number of transceiver means for transmitting and receiving signals to / from a number of user stations. A feeding network is provided which comprises a number of phase ports, a number of which form first phase ports connected to a number of transceiver means for downlink communication and a number of which form second phase ports connected to a number of transceiver means for uplink communication. The feeding network comprises a number of antenna ports connected to antenna elements and the feeding network generates substantially independent, orthogonal signals to provide for phase diversity and the antenna elements are arranged to form at least one cylindrical array antenna. The invention also relates to a method of providing communication between an omnidirectional base station antenna arrangement with a number of antenna elements and a number of transceiver means and a number of user stations as well as to a method of providing for at least phase diversity transmission at an omnidirectional base station antenna arrangement.

A perfect absorber comprising a base layer having two opposing surfaces and a metal layer, a dielectric layer, and a dielectric layer stacked in this order from the surface of the substrate layer, further comprising a metal nanometer array stacked on the surface of the dielectric layer. The metal nanometer array is any one of a cylindrical array, a 3D helical array, a prism array, and an array of positive prisms. This kind of perfect absorber has no polarization sensitive defects, achieves broad spectrum absorption of spectral solar energy, and achieves absorption of 0.5-1.8 micron spectrum of 90% and above, which greatly improves the utilization rate of solar energy.

An antijam null steering conformal cylindrical antenna system includes a cylindrical array of linearly polarized individually weighted antenna elements; a plurality of weighting circuits one associated with each of the elements; and means, responsive to the power output of the weighting circuit, for decreasing the sensitivity in the direction of the maximum incident power.

A surveillance apparatus (100) is provided, said apparatus including a linear sub-array (101) of N omnidirectional transmitter elements (103) and a planar sub-array (102) of M receiver elements (104). A plurality of the transient elements (105) are generated by separating out at each of the receivers (104) the signals transmitted from the antenna elements (103) of the transmitter sub-array (101). This allows the geometry of each path (from each transmitter antenna element, to the point being imaged and back to the receiver antenna elements) to be converted to a delay or phase shift to focus on the particular point being imaged. The transient elements (105) form a cylindrical array (106) at the mid points between transmitter and receiver sub-arrays. Such a configuration enables a full 360 degrees of cover in azimuth and typically + / −60 degrees in elevation.

An axial stabilizer for the rotor of a magnetic bearing provides external control of stiffness through switching in external inductances. External control also allows the stabilizer to become a part of a passive / active magnetic bearing system that requires no external source of power and no position sensor. Stabilizers for displacements transverse to the axis of rotation are provided that require only a single cylindrical Halbach array in its operation, and thus are especially suited for use in high rotation speed applications, such as flywheel energy storage systems. The elimination of the need of an inner cylindrical array solves the difficult mechanical problem of supplying support against centrifugal forces for the magnets of that array. Compensation is provided for the temperature variation of the strength of the magnetic fields of the permanent magnets in the levitating magnet arrays.

An adjustable beam size illumination optical apparatus includes a beam size adjusting optical system which includes groups of cylindrical array lenses disposed correspondingly to the long and short axis directions respectively and having variable intervals among the lenses, and a group of cylindrical telescope lenses disposed correspondingly to one of the long and short axis directions and having variable intervals among the lenses, and adjusts parallel light from a light source in size in accordance with the two axis directions orthogonal to each other. The lens interval of one of the cylindrical array lens groups and the cylindrical telescope lens group is changed to adjust a beam size on a projection surface in accordance with the long axis direction or the short axis direction. Thus, it is possible to adjust the beam size in accordance with the long axis direction and the short axis direction individually, and it is possible to make irradiation with the beam with uniform intensity.

The invention discloses a preparation method for a super-oleophobic micro-cylindrical array surface texture. The preparation method comprises the following steps: S1, cleaning and drying a metal substrate; S2, homogenizing photoresist, and carrying out pre-baking pre-curing on the photoresist; S3, exposing the photoresist, placing a mask with a special hollow-out pattern above the photoresist, and copying the mask pattern to the photoresist; S4, carrying out developing and post-baking of the photoresist, so that a microhole array is generated on the photoresist; S5, carrying out primary electroforming on a micro-cylindrical array to generate a metal micro-cylindrical array; S6, removing photoresist with certain thickness, and exposing local top end parts of all micro cylinders; S7, carrying out secondary electroforming on the micro-cylindrical array to form a super-oleophobic nail cap structure; carrying out wet-process complete photoresist removal; and carrying out low surface energy modification. According to the preparation method, the straight-body micro-cylindrical array is formed by electroforming after constructing the microhole array by use of the photoresist, part of the photoresist is removed to expose the micro-cylindrical top, and secondary electroforming is carried out to construct a micro-cylindrical cap body, so that the super-oleophobic surface texture which is uniform, regular and suitable for large-scale forming is constructed.

The invention discloses a method for preparing a super-hydrophobic surface on a surface of a random high molecular material, particularly a high molecular membrane material. The method comprises preparing a cylindrical array first stage structure on the surface of a random high molecular substrate by using a method of surface etching, wherein the cylindrical array is made of a material same as the material of the substrate; further depositing a zinc oxide seeding layer on the surface of the cylindrical array first stage structure; afterwards putting the substrate into a growth liquid in a growing zinc oxide nano-line array, then a second stage structure of the growing zinc oxide nano-line array grows from the surface of the first stage structure; dipping the high molecular substrate prepared with the first and the second stage structures into a solution with hydrophobic substances; after the surfaces of the first and second stage structures of the high molecular substrate are materialized together with the hydrophobic substances, taking out the high molecular substrate, and drying to obtain the desired super-hydrophobic surface.

A Tapered Slot Antenna Cylindrical Array (NC#98219). The method includes coupling at least two tapered slot antenna pairs to a base element in a cylindrical configuration. The method may further include coupling a transmitter / receiver to each tapered slot antenna of the at least two tapered slot antenna pairs via radio frequency links. In addition, the method may further include coupling a microprocessor to the transmitter / receiver via communication links.

The invention provides a cylindrical integrated active phased-array antenna. 96 linear radiation arrays are arranged in parallel to form a cylindrical array phase, each linear radiation array includes 8 radiation units and 8 phase shifters, and wave beam scanning in the pitching surface is realized; and each radiation column is connected with a switch array via a T / R assembly, the switch array divides the 96 linear radiation arrays into four groups, and a power amplifier is connected via an circulator. According to the invention, an independent antenna can be used to realize omnidirectional scanning with neither increase of array planes nor addition of mechanical scanning, the complexity and power consumption of an antenna system are reduced, and problems in heat radiation and the like are solved.

The invention discloses a multi-cylinder array freezing detection device. The multi-cylinder array freezing detection device comprises a cylinder array arranged on a testing surface, wherein the cylinder array comprises three cylinders which are sequentially arranged along the same axis and have different diameters; the diameters of cylinders in the cylinder array are gradually increased from one end to the other end; the surfaces of the two adjacent cylinders are not in contact with each other; the inner part of each cylinder is of a cavity structure; each cavity structure is internally provided with a vibration part; an acceleration transducer is arranged on the surface of each cylinder; the cylinders, the vibration parts and the acceleration transducers are connected with a signal acquisition system. According to the multi-cylinder array freezing detection device, a traditional mechanical freezing detection method is combined, the defect that super-cooled water drops with large and small scales cannot be distinguished is overcome and the advantage of traditional mechanical freezing detection is sufficiently expressed; two contradictions of detection of the large-scale super-cooled water drops and the small-scale super-cooled water drops are relatively coordinated and the freezing detection problem of the surface of an aircraft is solved relatively well, so that the multi-cylinder array freezing detection device has practical significance on design of an aircraft anti-icing / deicing system and guarantees of flight safety.

A Tapered Slot Antenna Cylindrical Array (NC#97194). The apparatus includes a base and a tapered slot antenna array. The base is capable of retaining a plurality of tapered slot antenna pairs. The tapered slot antenna array is operatively coupled to the base in a cylindrical configuration. The tapered slot antenna array comprises at least two tapered slot antenna pairs. Each tapered slot antenna pair of the at least two tapered slot antenna pairs is capable of operating independently of or in conjunction with other tapered slot antenna pairs of the at least two tapered slot antenna pairs to enable direction finding, acquisition, communication and electronic attack capabilities.

The present invention relates to a beacon light (100) for aviation obstacle warning comprising an elongated body portion formed into a hollow tube (19), a plurality of light emitting diodes (LEDs) (10) mounted on the outer surface of the hollow tube (19) and electrically connected together to form a substantially cylindrical array of LEDs (10), characterized in that a plurality of grooves (21) are formed axially on the outer surface of the hollow tube for arranging the array of LEDs (10) in a substantially cylindrical and orderly manner, and the hollow tube and the LEDs (10) being encapsulated with sealing composition (11), wherein at least a part of the lens body of the LEDs (10) protrudes out from the surface of the encapsulation to allow the direct emission of light. The LEDs (10) are affixed along an elongate conductor set within the grooves (21) and the surface of the body portion. The beacon light (100) which is very compact, light weight for use high up on communications towers and in an around airports, etc. The clear portion of the LED lens to project the light directly outwards 360 degrees horizontally and with a vertical beam width of 15-35 degrees. This eliminates the need for a dome or covers over the LEDs that cut down effective light output. This construction further improves heat conduction and cooling from direct convection of air. It is particularly good for keeping out moisture from causing deterioration of the electrical and electronic circuits in the light (100) in hot and humid tropical climates and for long term operation of the light (100).

The invention discloses a cylindrical-array-based centralized MIMO (multiple input multiple output) radar waveform optimization method, which mainly comprises the following steps: determining a cylindrical-array-based centralized MIMO radar, the cylindrical-array-based centralized MIMO radar integrating sending and receiving and comprising N circles of array elements and each circle of array elements comprising Nt array elements, and obtaining phase difference column vectors of the N circles of array elements relative to the antenna phase center of the cylindrical-array-based centralized MIMO radar and electric field intensity column vectors of the N circles of array elements respectively; further calculating guide vectors of the N circles of array elements; calculating a receiving beamforming weight of the centralized MIMO radar, and further calculating an optimal receiving beamforming weight of the centralized MIMO radar; recording expected sending directional diagrams, then arranging the expected sending directional diagrams to obtain column vectors of the expected sending directional diagrams according to an arrangement sequence of the phase difference column vectors, calculating a designing criterion of a waveform matrix S of the N circles of array elements of the centralized MIMO radar, and further calculating a final waveform matrix of the centralized MIMO radar.

A technique for suppressing interference with unknown phase shifts received by an array of sensor elements partitions the array into a plurality of subarrays. Each subarray is processed independently to suppress the interference. Next, the resulting data from each subarray are summed together. This summed data, which effectively represents data provided by the full array with interference suppressed, may be utilized to detect and / or localize a target of interest. Each subarray is processed independently of all other subarrays. No cross-subarray processing is required. This technique is applicable to linear arrays, multi-line arrays, planar arrays, cylindrical arrays, conformal arrays, and spherical arrays. Applicable sensors include acoustic sensors (e.g., sonar, ultrasonic), electromagnetic sensors (e.g. radar), and optical sensors (e.g., infrared, ultraviolet, visible light).

An all-solid-state marine radar technology based on a non-rotating cylindrical array antenna is described. Multiple transmit / receive (T / R) modules are used to form the antenna beam, which allows the beam sequencing, the dwell time in each beam position, the resolution, and the beam shape to be varied in order to make best use of the available energy. Waveforms with a high duty ratio can be used on transmit in order to make efficient use of solid-state power amplifiers. High resolution in both range and Doppler provides high measurement accuracy and superior performance in clutter. Alternate embodiments, including continuous waveform embodiments are disclosed.

The invention relates to a circular dichroism enhancement device and a circular dichroism enhancement detection method based on a super-chiral light field. The circular dichroism enhancement device isformed by superposing a silicon dioxide substrate, a gold thin film, a magnesium fluoride nano-cylindrical array and a gold nano-cylindrical array from bottom to top. Vertically incident circularly-polarized light is going to the efficiently coupled into an optical resonant cavity formed by the gold thin film, the magnesium fluoride nano-cylindrical array and the gold nano-cylindrical array, andgenerates a super-chiral light field with the optical chiral density higher than that of ordinary circular polarization. When chiral molecules interact with the super-chiral light field and a resonance peak of the molecules is matched with the resonance wavelength of the resonant cavity, the circular dichroism of the chiral molecules can be greatly improved. In addition, through reducing a gap between the nano-cylindrical arrays, red shift of the resonance peak of the resonant cavity can be caused, thereby being conductive to further enhancing the optical chiral density of the light field in the resonant cavity and circular dichroism signals of the chiral molecules. The circular dichroism enhancement device and the circular dichroism enhancement detection method have the advantages of great circular dichroism signal intensity, high expandability and the like.

The invention provides a casting machining method for a liquid droplet cake-shaped bouncing large-size super-hydrophobic cylindrical array. The method includes the steps that a casting die is prepared, wherein a metal matrix array blind hole structure with the diameter ranging from 0.8 mm to 1.25 mm, the cylinder distance being 0.25 mm and the depth ranging from 0.6 mm to 1.0 mm is machined, and the casting die is obtained after polishing, cleaning and drying; casting curing is conducted, wherein a mixed polymer solution is used for casing the casting die which is cleaned and dried, and curing treatment is conducted; die taking is conducted, wherein the polymer cylindrical array is obtained through direct die releasing; and super-hydrophobic treatment is conducted, wherein spraying treatment is conducted on the obtained cylindrical array, the super-hydrophobic cylindrical array is obtained, and a mixed solution is a fluoroalkyl silane ethanol solution containing nano TiO2 particles. The casting machining method has the beneficial effects of being simple, easy to operate and low in cost, selectable material kinds are multiple, materials and templates can be repeatedly used, and the size of the prepared cylindrical array is large; and large-area and industrial machining of liquid droplet cake-shaped bouncing surfaces can be effectively achieved.

The invention relates to a three-dimensional imaging method for a three-dimensional imaging system with a cylindrical array surface, which includes: placing a metal cylinder with a smooth surface at the coaxial center of the cylindrical array surface of the system before powering on the system; powering on N transmitting antenna units to sequentially transmit radio frequency signals to the surface of the metal cylinder and to be reflected by a mirror; receiving echo signals and transmitting the echo signals to an echo signal receiving and processing device by the aid of corresponding receiving antenna units to process the echo signals and then transmit the echo signals to a signal processor; processing all the echo signals after receiving and digitally sampling all the echo signals by theaid of the signal processor to obtain and store five groups of correction parameters; taking out the metal cylinder, transmitting a target object to a scanning position, starting scanning and transmitting echo signals; and correcting scanning echo signal data by using the five groups of correction parameters, imaging the corrected scanning echo signal data by a known three-dimensional imaging method and then displaying images on a screen by the aid of the signal processor.

The invention provides an LED display. The LED display comprises a plurality of pixels. Each pixel comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel, wherein LED light sources with different colors are respectively used for the red sub-pixel, the green sub-pixel and the blue sub-pixel. Furthermore the LED light sources with different colors form two emergent light waves with two emergent angles through a waveguide. Compared with the prior art, the LED display is advantageous in that the trouble in realizing precise alignment between an outer cylindrical array lens and a panel in a process can be saved. Furthermore, in the LED display according to the invention, each sub-pixel generates emergent light waves with different wavelengths through cooperation of an independent LED light source and different light emitting layers, thereby improving the resolution of a three-dimensional image. Furthermore the independent LED light source in each sub-pixel can realize different light emitting angles and can be used for generating the three-dimensional images with high brightness and high resolution.

Provided is a hot-pressing method for processing a large-size super-hydrophobic cylindrical array capable of bouncing in a droplet and cake shape. The method comprises the steps of: preparing a hot-pressing mold, wherein a metal substrate array through-hole structure which has a diameter of 0.8-1.25 mm, column spacing of 0.25 mm, a depth of 0.6-1.0 mm is processed, grinding, washing and blow-drying are conducted on the metal substrate array through-hole structure to obtain the hot-pressing mold; conducting hot pressing, wherein a polymer material is applied to the hot-pressing mold, vacuum hotpressing is conducted on the hot-pressing mold with the polymer material, and the hot-pressing mold with the polymer material is cooled to a room temperature after taken out; removing the mold, wherein after the excessive polymer material flowing out of through holes is cut off, the hot-pressing mold is removed, and a polymer cylindrical array can be obtained; and conducting super-hydrophobic treatment, wherein the obtained cylindrical array is sprayed with a mixed solution to obtain the super-hydrophobic cylindrical array, and the mixed solution is a fluorosilane ethanol solution which contains nano TiO2 particles. The method has the advantages of being simple and easy to operate and low in cost, multiple kinds of materials can be selected, the materials and templates can be reused, andthe size of the prepared cylindrical array is large; besides, industrial processing and large surface of the super-hydrophobic cylindrical array capable of bouncing in the droplet and cake shape canbe effectively realized.

The invention discloses a method used for quickly detecting trace pentachlorinated biphenyl by surface enhanced Raman Effect, belonging to the field of trace organic pollutant detection technique. The method deposits metal silver on a substrate by a temperature-controlled inclination growth method, thus obtaining nanometer inclined rod or cylindrical array film with good discreteness; the silver film is used as surface reinforced Raman substrate which has excellent surface reinforced effect and can defect trace pentachlorinated biphenyl; the pentachlorinated biphenyl is dissolved in acetone; by virtue of strong volatility of the acetone, the acetone is volatile under a certain vacuum and temperature, thus realizing the no-interference detection of trace pentachlorinated biphenyl; finally, by the surface reinforced Raman effect, the Raman spectrogram measurement can be carried out on the unique silver film surface reinforced Raman substrate attached by trace pentachlorinated biphenyl, thus achieving the detection of trace pentachlorinated biphenyl. The detection method is simple and quick, has low cost and high sensitiveness, and has wide application prospect in the aspect of detection of organic pollutants.

A roofing membrane retainer is provided having a cylindrical plate. The cylindrical plate has a central aperture for receiving a fastener. The plate also includes a pair of concentric inner and outer raised reinforcing ribs and a plurality of scoop-shaped projections. The scoop-shaped projections extend downwardly from the plate in concentric inner and outer cylindrical arrays. The inner cylindrical array of projections and the outer cylindrical array of projections are radially outward of the inner rib and the outer rib, respectively. The projections each comprise a scoop with a base periphery having an open mouth edge and a remaining peripheral portion contiguous with the plate. The projections in each array are spaced equidistance about the plate. The mouth edge of adjacent projections are oriented in alternating radial inward and outward directions.

An apparatus for controlling secure access and storage of at least two different types of articles is disclosed The apparatus includes a plurality of compartments for articles, the compartments arranged in a rotatable cylindrical array with one opening for each compartment on the surface of the cylinder A linearly driven belt having an access port thereon limits access to a single compartment The compartments may be of equal or different size to accept different articles A sliding door, positionable over an opening in the housing, provides additional security A drawer with additional compartments may be included in the apparatus in addition to the cylindrical array Certain compartments may have an assignment linking them to other compartments in the cylindrical array or drawer, allowing for the secure and separate storage of sets of related articles, such as the keys, registration and / or license plate of a car Access to stored articles is achieve through a touch screen user interface, an OCR document reader or scanner, a biometpc reader device, or any combination thereof The apparatus provides easier and quicker access to stored articles, especially sets of stored articles.