32 results about "Triangle center" patented technology

It is necessary to attain the combustion stability when performing ignition retarding in order to reduce exhaust gas and raise the exhaust gas temperature under a cold start condition, as well as soot reduction under a fully open throttle valve condition.

An injector according to the present invention comprises: a plurality of fuel passages having an axis line inclined with respect to a valve operation axis line at a nozzle end; wherein inclined axis lines of at least three of the fuel passages have a spreading angle, none of them intersecting with each other, and three injection points are formed in a plane perpendicular to a valve operation axis line to form a triangle; and wherein at least one center-oriented fuel passage having an injection point around the center of the triangle is provided.

A surface light source device having LED clusters arranged in a matrix of rows and columns on a board. Each of the LED clusters includes red, green and blue LEDs arranged in a triangle. The LED clusters are grouped into A, E, C and D, which have the red LEDs located top, right, bottom and left, respectively, from a center of the triangle. The matrix of the LED clusters includes alternating first and second type rows arranged repeatedly from top to bottom of the matrix, terminating with the second type row. The first type rows each have first type cluster arrays of the LED clusters arranged in a repeating order of E, C, D and C from left to right. The second type rows each have second type cluster arrays of the LED clusters arranged in a repeating order of A, D, A and D from left to right.

As set forth herein, computer-implemented methods and systems facilitate employing a single stochastic screen defined up to a specified transition level. The dots at the specified level are connected to form a triangle tessellation with an associated spot function. For up to three colorants, a vector screening technique is employed, which involves a first colorant dot being grown from the vertices, second colorant dot grown from the triangle center, and a third colorant dot grown from the side midpoints. Growth in this manner ensures separation of colorants up to a certain density level. In cases where fourth colorant is to be used at a given pixel, the fourth colorant can be added using methods typically used for clustered screens, such as stochastic screening of the lightest colorant, in order to mitigate color shift sensitivity issues.

The invention provides an intersection point judgment based trilateral locating method. The method specifically includes: selecting three reference nodes; arranging a circle for each reference node and calculating an intersection point between any two optional cycles among the three cycles; selecting one intersection point from the intersection points of every two intersection cycles as a vertex of a triangle according to the selection criterion that when two intersection points exist between the two circles, the intersection point closest to the circumference of the third cycle is the vertex of the triangle; taking the triangle center of gravity formed by the three vertexes as the location estimation value of a tag node; calculating location estimation values of reference node combinations; calculating the average value of all tag node location estimation values and taking the average value as the final location of the tag node to realize location of the tag node. The third cycle is taken as the reference, two interaction points between the two cycles are selected, better fault tolerance of the triangle can be determined, the center of gravity of the triangle is closer to the tag node, and the selection method is simple in calculation and easy to implement.

The invention belongs to a flexible supporting device and flexible supporting pieces of a photoetching machine. Each flexible supporting piece comprises a top block, a flexible connecting mechanism and bottom blocks, wherein the top block is connected with an objective lens; the bottom blocks are connected with a main base plate; the flexible connecting mechanism comprises two flexible connecting pieces; the flexible connecting pieces are arranged between the top block and the bottom blocks to form a herringbone or inverted-T-shaped flexible supporting piece; each flexible connecting piece is a frame structure with an internal beam or a beam structure with a flexible hinge. The flexible supporting device comprises a first flexible supporting piece, a second flexible supporting piece and a third flexible supporting piece, wherein the three flexible supporting pieces are distributed at three intersection points of an isosceles triangle; the objective lens is arranged in the center of the triangle. According to the technical scheme provided by the invention, the overall modal of an assembly of the objective lens and the main base plate is smaller than 30Hz by virtue of the adopted flexible supporting pieces and the positional layout of the flexible supporting pieces. Each flexible supporting piece is ultralow in rigidity and sufficient in supporting strength, and meanwhile, the stress concentration is avoided.

A Pyramid Easel display holder for primarily flat objects includes ten main contiguous, triangular and polygonal (modified triangular) planes with additional contiguous triangular and trapezoid planes as part of optional base(s). On each of two display sides, objects are supported by a modified triangular center face, a triangular wing on each side of the center face, with two base options which brace the bottom of display objects, and aid in expansion control through friction with the surface support area. Front and mirrored back, and mirrored side wings, are connected by modified triangular swing arms, which are essentially the dynamic planar backsides of the front and back center pyramids, meeting at the crown of the embedded pyramids and “swinging” inside the center of the easel structure.

The present invention discloses a triangulation ray tracing path searching method. The searching method comprises the following steps: defining a normal vector of each triangular, wherein the normal vector faces outward corresponding to a straight prism, establishing a dot product on a ray direction vector and the normal vector of the triangular, and abandoning a triangular whose dot product is greater than zero; separately acquiring a distance between each ray and each triangular center, and if the distance is greater than a radius of a circumscribed circle of a triangular, abandoning the triangular; for each ray, calculating a signed volume of a polyhedron consisting of three vertexes of the triangular and two endpoints of a line segment, and if a symbol of the volume is the same as a symbol of the ray direction vector, indicating that the ray intersects with the triangular, or otherwise the ray does not intersect with the triangular; and acquiring a distance between each intersection point and a starting point of the ray, and selecting an intersection point that is the closest to the starting point as an end point of a ray line segment. According to the triangulation ray tracing path searching method, computational complexity is reduced, and program execution efficiency is improved.

The invention discloses an automatic centering total station base apparatus. The automatic centering total station base apparatus comprises an upper base, a lower base and a triangular tripod, wherein a reflection pile is arranged on the ground of the central part of the triangular tripod, a circular hole A is formed in the center of the lower base, two sides of the circular hole A are respectively provided with a transverse sliding rod A and a transverse sliding rod B, sliding grooves are respectively formed in the upper surfaces of the transverse sliding rod A and a transverse sliding rod B, the transverse sliding rod A and the transverse sliding rod B are provided with longitudinal sliding rods, two adjacent longitudinal sliding rods are provided with a drive motor C, the upper base is arranged on the longitudinal sliding rods, a circular hole B is formed in the center of the upper base in a triangle shape, an image projector is arranged at the inner lower part of the circular hole B, the image projector is provided with a computer controller, and the computer controller is connected with a drive motor A, a drive motor B and the drive motor C. The automatic centering total station base apparatus automatically precisely adjusts a total station measuring point, thereby saving the leveling time and reducing the manmade error.

The invention relates to a lifting appliance for installing a blast furnace shell. The lifting appliance (1) is in equilateral triangle shape; a three-side support (6) is connected through angle connecting plates (5); simultaneously, the three angle connecting plates (5) are connected with three suspenders (4); each suspender (4) is provided with a batten plate (3) and is connected with the angleconnecting plate (5); a lifting lug (7) is connected with the angle connecting plates (5) by passing through the suspenders (4) and is provided with an upper lifting hole (15) and a lower lifting hole(16); the two lifting holes for hoist are respectively provided with a double-faced reinforcing ring (8); the three-side support (6) is connected with a pull rod (10) through a connecting plate (9);the pull rod (10) and the suspender (4) are connected on a triangular central connecting plate (2); and the lifting appliance (1) is a stable structure on the whole. The invention has the advantages of simple structure, convenient operation and good overall mechanical property, greatly saves working hours, reduces the labor intensity of workers, and ensures the quality of the blast furnace shell.

The invention discloses a cylindrical surface triangular central symmetry arrayed electrostatic spinning spray head and a spinning method. The cylindrical surface triangular central symmetry arrayed electrostatic spinning spray head comprises a body. The body is provided with a cylindrical surface located on the top and at least three sets of output structures. Each output structure set comprises three connection holes formed in the cylindrical surface, wherein each connection hole is connected with a needle-type nozzle, the needle-type nozzles extend in the normal direction of the cylindrical surface and are equal in height, and the three connection holes are located on end points of a triangle. The subsequent output structure set is in central symmetry with the previous output structure set in the axis direction of the cylindrical surface and is spaced from the previous output structure by a certain distance. One sides of the triangles are located on the same straight line and are parallel to the axis of the cylindrical surface. The electric field intensity difference of the needle-type nozzles is small, and the tip end electric fields of the nozzles are more uniform. The cylindrical surface triangular central symmetry arrayed electrostatic spinning spray head and the spinning method can be used for electrostatic spinning.

The invention relates to a seed film belt special for ecological rice. The seed film belt is composed of an upper film belt body, a lower film belt body and a film cover. The lower film belt body of the seed film belt is provided with pits for containing seeds, the upper film belt body is provided with windows with the dimension larger than that of the pits of the lower film belt body, seeds and organic biological fertilizer are fixed between the lower film belt body and the upper film belt body and are distributed in a triangular shape, and the lower film belt body, the upper film belt body and the film cover are three layers of degradable film belt bodies which are bonded together through hot laminating. The seed film belt is characterized in that the seeds and the organic biological fertilizer are fixed between the lower film belt body and the upper film belt body, the seeds are distributed on the three vertexes of triangles, the organic biological fertilizer is distributed in the centers of the triangles, the degradable film on the film cover degrades automatically, and the seeds grow out of the film cover after germination. Positioning sowing and planting of rice seeds are achieved, the effects of saving labor, increasing the yield and improving the effect are achieved, environment friendliness is achieved, the planting time is shortened, and the sunlight absorbed by plants can be increased.

The invention discloses a triangle centering algorithm based locating method and device, and relates to the field of locating methods. The triangle centering algorithm based locating method comprisesthe steps of calculating distances between a locator and three base stations; obtaining base station coordinate information; calculating distances among the three base stations; calculating directionvalues of the locator relative to the three base stations; verifying the direction value of the locator relative to the three base stations to obtain final positioning information. By adopting the technical scheme, as the three base stations and the triangle centering algorithm are adopted, the outdoor positioning error can be reduced to within 50 m in an outdoor environment without any GPS signal; meanwhile, the triangle centering algorithm based locating method and device have the locating speed faster than that of the former base station assistant location technique, have lower cost and canbe widely used.

A data center network based on a prismoid structure is characterized in that eight switches form a triangular prismoid unit network structure, and the triangular prismoid unit network structure comprises six five-interface switches and two four-interface switches. Firstly, the top surface and the bottom surface are respectively an equilateral triangle with the side length of L, and each equilateral triangle is formed by three five-interface switches which are connected in pairs; a four-interface switch is added to the center of each of the two equilateral triangles and connected with the otherthree switches pairwise, the switches corresponding to the upper bottom face and the lower bottom face are connected pairwise, and then the three switches at the vertexes of the bottom face trianglesare sequentially connected with the switches at the upper right corner to form a basic network topology unit. Except the switch in the center of the triangle, each switch is connected with the server. Extension is carried out according to the mode, a vertically connected data center network with the bottom side length being NL and h unit layers can be formed, and h and N are integers larger thanor equal to 1.

The invention provides an indoor positioning method and device and electronic equipment, and belongs to the technical field of positioning. The indoor positioning method comprises the following steps that: firstly, the received signal strength (RSSI) of a base station currently communicating with a user terminal needing to be positioned is acquired, data in a preprocessed RSSI data set are sorted, base station coordinates associated with the first three strength values in a sorting table are acquired, and a triangular positioning calculation area is formed by taking the base station as a point; three circles are drawn with three base stations as the circle centers and the distances corresponding to the received signal strength (RSSI) as the radiuses, each circle and the two adjacent edges of the triangle form two intersection points, the two intersection points are connected to obtain three connecting lines, the midpoints of the three connecting lines are taken, and a sub-positioning calculation area of the triangle is formed through the midpoints of the three connecting lines; and the coordinate value of the triangular center point of the sub-positioning calculation area is calculated, and a positioning result is output after processing. A region positioning method is improved through a triangular region method, and the positioning precision and stability are improved.

The invention discloses a multi-flow-direction watershed feature extraction method based on a hexagonal grid, and the method comprises the steps: firstly converting a regular grid DEM into a spherical hexagonal grid for representation according to a bilinear interpolation method, and carrying out the calculation of a vertex elevation and a central point elevation of the hexagonal grid; then connecting the vertexes and the center points in sequence, dividing each hexagonal grid into a triangle, calculating the elevation of the center point of each triangle, and determining the water flow direction according to the elevation difference between the triangle and the adjacent hexagonal grid; calculating the grid flow according to the elevation difference proportion of the adjacent hexagonal grid; and finally, traversing the grid, and tracking a drainage basin path. According to the method, a hexagonal grid is used as a basic grid, so that the problem of terrain expression imbalance caused by inconsistent distances of edge adjacent and corner adjacent grids in regular grid DEM-based drainage basin feature extraction is solved; the flow direction and the flow are determined by using the elevation difference proportion of the triangle and the adjacent hexagonal grid, and the problem that the original hexagonal single-flow-direction algorithm cannot truly describe the water flow characteristics is solved.

The invention discloses a compact false twist spindle device with a novel structure. The compact false twist spindle device is characterized by comprising a seat (6), the seat is positioned on the upper portion of a false twister, two driven bearings (5) and a driving bearing (4) are mounted on the seat (6), axial distances of three spindle axes of the bearings form a triangle, friction discs (7) which are overlaid on one another in the center of the triangle according to a certain sequence are mounted on the three spindle axes, the seat (6) is mounted on the lower portion of the false twister via a spindle position pin (3) and two fixing pins (2), and grooves are laterally formed in a support connector (1) on the lower portion of the false twister. The compact false twist spindle device has the advantages that spindle position structures are changed on the basis of the original false high-speed stretch yarn machine, the spindle density can be increased, and multi-spindle-position (32-spindle) and high-capacity effects can be realized; the grooves are laterally formed in the support connector instead of being downwardly formed originally, so that excellent contact stability of bearings of the false twister and tangential belts can be kept, and the quality of falsely twisted textured yarns can be improved.

The invention discloses a three-hole flange automatic pin retreating mechanism. The three-hole flange automatic pin retreating mechanism comprises a main positioning plate. A flange base plate is fixed to one side of the main positioning plate. A first air cylinder, a second air cylinder and a third air cylinder are fixed to the other side of the main positioning plate. A fourth air cylinder is arranged in the center of a triangle defined by the first air cylinder, the second air cylinder and the third air cylinder. Three positioning cores and two semicircular positioning blocks are installed on a first positioning plate. The ends of the first air cylinder, the second air cylinder and the third air cylinder penetrate through the main positioning plate and then are each connected with a pressing block. According to the three-hole flange automatic pin retreating mechanism, an advancing and retreating mechanism is omitted completely. In the use process, the flange positioning blocks and the positioning cores can realize automatic retreating and advancing through driving with the air cylinders, and an operation procedure is omitted for workers. The three-hole flange automatic pin retreating mechanism lowers the complexity of a tool, saves space, reduces the weight of the tool and reduces the production cost.

The invention discloses a high-strength combined type drain plate. The high-strength combined type drain plate comprises a main plate body and an auxiliary plate body. The main plate body is of a regular hexagon structure. The center of the surface of one side of the main plate body is provided with a first through hole. The centers of the connection lines of the circle center of the first through hole and the six side edges of the main plate body are each provided with a second through hole. The centers of the connection lines of the circle centers of the second through holes and the six side edges of the main plate body are each provided with a third through hole. The centers of triangles formed by the circle center of the first through hole and the side edges of the main plate body in a surrounded mode are each provided with a fourth through hole. First bosses are fixed to the centers of the connection lines of the circle centers of the third through holes and the midpoints of the side edges of the main plate body correspondingly. Second bosses, third bosses and fourth bosses are sequentially arranged around the first bosses. According to the high-strength combined type drain plate, tensile force of adjacent drain plates in the drain installation process can be resolved effectively, the overall horizontal tensile strength and longitudinal bearing ability are ensured, the manufacturing process for the overall structure is simple, the work strength of the drain plate is improved greatly, and the service life of the drain plate is prolonged greatly. The drain plate has good practicability and is worth using and popularizing.