1307 results about "Isoetes triquetra" patented technology

A floating power generation assembly comprises at least three floating units (900) floating on a body of water, and at least three anchors (916) secured to a solid surface beneath the body of water, each of the floating units (900) being provided with power generation means, the floating units (900) being arranged substantially at the vertices of at least one equilateral triangle. The invention also provides ship-borne apparatus for deploying the floating units of such a power generation assembly and a novel multiple wind turbine assembly.

A white beam with high color-rendering index is formed by uniting a collimated red beam and a collimated blue−green beam, the latter having as its source a blue LED with a green phosphor. The white beam is formed by a prism with an amber low-pass dichroic filter. The prism cross-section can be either a square or an equilateral triangle. The triangular prism can have one third of its mass reduced by stepped facets. Both types of prism can be elongated to accommodate multiple collimators. Switching between white, red, and blue−green allows application to police vehicles.

A hex-axis horizontal movement dynamic simulator is aimed at Modular Design without hydraulic or pneumatic system but which were conventionally used in the so called Stewart Platform; this dynamic simulator comprises three sets of movement control unit with symmetrical structure located at the positions relative to each other forming three sides of an equilateral triangle, and a load-carrying platform which connected to the three movement control by means of three sets of universal-joint yoke mechanism each relative position located on the load-carrying platform are each other arranged to form as three sides of an equilateral triangle too; with this type of arrangement, this dynamic simulator have a 6-degree of freedom motion when a sets of movement control unit makes different rectilinear motion, the load-carrying platform will generate a combination of spatial translation motion and angular motion.

An improved, free-piston, Stirling machine having at least three pistons series connected in an alpha Stirling configuration. Each cylinder is stepped so that it has a relatively larger diameter interior wall and a coaxial, relatively smaller diameter interior wall. Each piston is also stepped so that it has a first component piston having an end face facing in one axial direction and matingly reciprocatable in the smaller diameter cylinder wall and a second component piston having an end face facing in the same axial direction and matingly reciprocatable in the larger diameter, cylinder wall. One of the piston end faces bounds the compression space and the other end face bounds the expansion space. Preferably, each stepped piston has peripheral, cylinder walls that are axially adjacent and joined at a shoulder forming the end face of the larger diameter component piston. Stirling machines with these stepped features are also arranged in various opposed and duplex configurations, including arrangements with only one load or prime mover for each opposed pair of pistons. Improved balancing or vibration reduction is obtained by connecting expansion and compression spaces of a four cylinder in-line arrangement in a 1, 3, 2, 4 series sequence. Three cylinder embodiments provide a highly favorable volume phase angle of 120° and are advantageously physically arranged with three, parallel, longitudinal axes of reciprocation at the apexes of an equilateral triangle.

Exemplary embodiments of the present invention provide flexible, multi-voltage battery modules having multiple cells that are nested together. The cells can be, for example, cylindrical lithium ion cells. To increase cell package density, the cells can be disposed in a nested configuration so that adjacent cell centers form equilateral triangles. The cells can be placed in a housing or case with interlocking tabs that allow multiple modules to be connected together. Within a module, the cells can be connected in different configurations by buss bars at the top and the bottom of the battery cells. The different configurations may provide different voltages for the module.

The invention discloses a micro-stress assembly flexible supporting method of a small-calibre micro-crystal glass material reflector. The method comprises the following steps of: firstly, carrying out lightweight processing on the back of the reflector, and processing a central column in the centre of the back; secondly, processing a flexible core shaft having an equilateral triangular structure, processing a hollow cylinder in the middle of the flexible core shaft, respectively processing a connecting part having a cuboid structure at three angles, processing three rectangular through holes between the cylinder and the connecting part, and processing a flexible discharging groove, a mounting hole and a pin hole in the connecting part; and finally, directly bonding and fixing an outer surface of the cylinder of the flexible core shaft with an inner surface of the central column at the back of the reflector. By the method, the positioning accuracy of the reflector is improved integrally, temperature adaptability is improved, a forced environment of the reflector during assembly is improved, and optical aberration such as field curvature and astigmatism generated by compression in the conventional mode is eliminated.

The present invention discloses a pixel arrangement structure, an organic electroluminescent device, a display device, and a mask plate such that the opening area of a metal mask plate for manufacturing the pixel arrangement structure is large, thus the aperture ratio is raised, and the AMOLED product brightness, service life and picture quality sharpness are improved. The pixel arrangement structure provided by the invention comprises a pixel formed by three sub pixels with different colors, an equilateral triangle is formed by the center point connection lines of the sub pixels, and the shape of each sub pixel is a polygon with more than four sides.

The invention discloses a six-degree-of-freedom active vibration isolation device, which has the six-degree-of-freedom vibration isolation and positioning functions. The device comprises a lower platform, an upper platform and six support legs, wherein the six support legs are respectively connected with the upper platform and the lower platform through fixing blocks to form a Stewart parallel mechanism, the positions of the three fixing blocks on the lower platform are arranged in an equilateral triangle shape, the positions of the three fixing blocks on the upper platform are also arranged in an equilateral triangle shape, the six support legs are same in the structure, two adjacent support legs are mutually vertical with each other, each support leg comprises an active executer and an air spring which are formed into a parallel structure, and each air spring is used as a passive vibration isolation part. The device has the advantages that the combined method of active vibration isolation and passive vibration isolation is adopted, the ultra-low inherent frequency is realized, and the vibration with frequency exceeding the inherent frequency is effectively isolated; the good attenuation on the six-degree-of-freedom vibration is realized, and the precise positioning of six degrees of freedom is realized.

The invention provides a grapping mechanism and method for spatial targets. A clamp-type three-finger structure is utilized to ensure that the mechanism is as small as possible under the premise that the structure can bear loads with different kinds of specifications and sufficient strength and suitable for multiple targets. The grapping mechanism is simple in structure, easy in machining and low in manufacture cost. The grapping mechanism and method for spatial targets have following beneficial effects: the grapping mechanism for spatial targets comprises a three-finger gripper and a driving mechanism used for driving the gripper to close and open; the gripper is in the three-finger structure in which three fingers are symmetrically distributed in the form of 2 to 1 on the center surface of the grapping mechanism; the connecting lines among the central points of the sections of the fingers form an equilateral triangle so that grapping force and moment balance of the spatial targets are ensured to the maximum extent.

The invention discloses an electromagnetic shielding light window of a double-layer interlaced multi-cycle metal ring embedded array and belongs to the technical field of electromagnetic shielding. The electromagnetic shielding light window is formed by arranging two layers of metal grids in a rotating and interlaced mode and loading the two layers of metal grids on the two sides of a light window transparent substrate or a substratum. Each layer of metal grid is formed by densely arranging and connecting a set of concentric metal rings and another metal ring with the different diameter in an equilateral triangle mode, and the metal grids are distributed and loaded on the surface of the light window transparent substrate or the substratum in a crossed mode. The adjacent rings with the same diameter are communicated in an external tangent mode. The concentric rings are aligned with the external rings to serve as basic rings which are internally provided with metal sub rings communicated with the concentric rings in an internal tangent mode. Lines are overlapped at the joints where the rings are communicated in a tangent mode or metal which ensures reliable electric connection between the points of tangency of the metal rings is arranged at the joints where the rings are communicated, and therefore it is ensured that all the rings are mutually conducted. Through selection of interlaced angles of the double layers of grids, the structure of the metal grids of the electromagnetic shielding light window can effectively reduce non-uniformity of high-level diffraction light intensity distribution of the grids, and therefore stray light generated by diffraction can be distributed more evenly, and influences on imaging are less.

A perpendicularly-crossed positioning algorithm of a wireless sensor network is used in a wireless sensor network of limited power and random distribution. The algorithm is on the premise of a mobile beacon with known self position, wherein the mobile beacon keeps broadcasting signal and current self position on a movement path line; a node records a point of highest signal intensity through comparing signal intensity, and calculates the position of the node by a geometry method according to the two points of highest signal intensity obtained from every two adjacent sides. The perpendicularly-crossed positioning algorithm requests that the path lines of the mobile beacon are two sides of an equilateral triangle and that the side length of the triangle is equal to the transmission radius R of the mobile beacon. The algorithm can accurately calculate the position of the node through using just one mobile beacon, thereby improving system extensibility and usability and reducing hardware requirement to save cost.

A block which can be easily assembled into a large variety of shapes and sizes using a smaller number of kinds of joints at a low cost. The assembled block includes equilateral triangular block plates, square block plates, and joints through which the block plates are coupled together. Each of the joints is formed of a single, flexible and bendable plate having wing portions on both sides thereof. The block plates are made of a flexible material and have edges and receptacles each provided along one of the edges for accepting one of the wing portions of the joints. The receptacles are each formed with a guide pocket. Any two the block plates can be coupled together through any of the joints by inserting the respective wing portions of the joint into one of the receptacles of one of the two block plates through the corresponding guide pocket and into one of the receptacles of the other of the two block plates through the corresponding guide pocket.

The invention discloses a regular tetrahedral symmetrical deployable mechanism unit which comprises 16 three-rod intersected connecting nodes and 24 equilong connecting rod units, wherein each three-rod intersected connecting node is provided with three revolute pairs, and the three-rod intersected connecting node is respectively connected with three connecting rod units through the three revolute pairs, and the two ends of the each connecting rod unit are respectively connected with different three-rod intersected connecting nodes through the revolute pairs; and the axial leads of the three revolute pairs on each three-rod intersected connecting node are located in a same plane, and a triangle formed by the intersection of the axial leads of the three revolute pairs is an equilateral triangle, a connecting rod installing position of each revolute pair is arranged at the midpoint of an edge of the equilateral triangle, and a connecting rod unit is perpendicular to the axial lead of the revolute pair connected with the connecting rod unit. The deployable mechanism unit disclosed by the invention is just composed of connecting rods and revolute pairs, so that the deployable mechanism unit is simple in structure, beautiful in modelling, convenient to manufacture, and easy to be folded and unfolded.

The invention discloses a method for measuring a relative pose of a noncooperative target. The method comprises the steps: selecting an object to be measured with equilateral triangle characteristics as the noncooperative target, and establishing a single line structured light based visual measurement system model; extracting three straight lines of the object to be measured and crossing points between single line structured light and the object to be measured, so as to obtain coordinates of five characteristic points of the object to be measured in an image coordinate system; carrying out calculation according to geometric constraint conditions of the object to be measured, so as to obtain coordinates of the five characteristic points of the object to be measured in a camera coordinate system; carrying out calculation according to distance translation invariance and the geometric constraint conditions of the object to be measured so as to obtain coordinates of the five characteristic points of the object to be measured in a world coordinate system, substituting the coordinates into a transformation equation of the camera coordinate system and the world coordinate system, and carrying out solving, so as to obtain the relative pose of the object to be measured, i.e., the relative pose of the noncooperative target. According to the method, through increasing an auxiliary line structured light source to monocular vision, the measurement on the relative pose of triangular characteristics of unknown dimensions is achieved.

Battery packs for high energy density batteries (cells), particularly arrays of such batteries are described herein. The battery packs include a microfibrous media (MFM)-phase change materials (PCM) composite block and one or more active cooling structures. The MFM is typically sintered to the active cooling structures. The battery packs may contain more than one MFM-PCM composite block. Additionally or alternatively, the MFM-PCM composite block may contain different layers containing different MFM-PCM composites, which have different functionalities. In a preferred embodiment, at least one layer contains a flame retardant PCM, while at least one other layer contains a PCM with a lower melting temperature. The cells may be arranged in a repeating square or equilateral triangle pattern, with one or more active cooling structures in the geometric center of the square or triangle.

The invention discloses a special-shaped wheel and caterpillar track combined walking mechanism, which comprises a power device, a gear shifting device and a special-shaped wheel. The power device is connected with the special-shaped wheel through the gear shifting device. The special-shaped wheel comprises an equilateral triangle hub, caterpillar track transmission gears which are installed at three corners of the hub, and a drive gear which is installed in the center of the hub. The drive gear is mutually meshed with the three caterpillar track transmission gears. A caterpillar track which is meshed with the caterpillar track transmission gears is installed on the outer circumference of the caterpillar track transmission gears. The special-shaped wheel and caterpillar track combined walking mechanism is integrated with advantages of a circular wheel and a caterpillar track walking mechanism, can overcome relevant disadvantages, can adapt to complex environments and has good mobility.

The invention relates to a method for planning a moving path of a multi-anchor-node set of a wireless sensor network. The wireless sensor network comprises a plurality of static unknown nodes and three movable anchor nodes. The method comprises the steps that a dynamic binding relationship and a static binding relationship exist among the three movable anchor nodes and a relationship mode among the three movable anchor nodes is firstly determined; a moving model of the multi-anchor-node set is determined according to environment application requirements, the relationship mode of the three movable anchor nodes, and the positions of the three anchor nodes and energy surplus of the three anchor nodes in a zone; the three movable anchor nodes are located on the peak portions of an equilateral triangle respectively, beacon signals are moved and sent every period T according to the determined moving model, covering of the whole zone is guaranteed by means of the adoption of two kinds of margin loophole solution methods when the beacon signals move to the boundary of the sensing zone, beacon information is continuously monitored and received by the unknown nodes, and position information is obtained through a trilateration method. The method is capable of effectively assisting in location and improving the location accuracy and the location covering rate.

The invention relates to a testing device and a testing method for high-temperature fatigue property of a microelement under a compound stress and belongs to the field of precise driving. Three built-in encapsulated piezoelectrically stacked multi-load piezoelectric drivers are in an equilateral triangle topological mounting form. The axial elongation movement under different time sequence voltages correspond to stretching-bending compound stressed forms in different modes of the to-be-tested microelement through transmission of motion of a spherical pair and a transmission pair, that is, three-degree-of-freedom high frequency alternating motion of one clamping end of a test piece is realized. The stretching piezoelectric drivers with regular groove structures can preload a uniaxial stretching load with relatively great motion displacement. In addition, a silicon nitride heating piece is embedded into a rectangular slot of a clamp body, so that a service temperature field with a controllable temperature gradient can be constructed. The testing device provided by the invention is compact in structure and rich in test content, and can be used for researching multi-stress fatigue failure behaviors of aero-engine materials and the like under a high-temperature service environment.