405 results about "Perpendicular distance" patented technology

The invention discloses a method based on monocular vision for detecting and roughly positioning the edge of a road, and relates to the field of machine vision and intelligent control. Aiming at a continuous road with different edge characteristics, two road edge detection methods are supplied and suitable for semistructured and nonstructured roads and can be applied to vision navigation and intelligent control over a robot. The invention provides a method for detecting the edge of the road based on colors and a method for detecting the edge of the road based on threshold value partitioning. On the basis of the obtained edge of the road, an image is subjected to inverted perspective projection transformation, so that a front view is transformed into a top view; and according to a linear corresponding relation between a pixel and an actual distance in the image, a perpendicular distance from the current position of the robot to the edge of the road and a course angle of the robot can be calculated. The method is easy to implement, high in anti-interference performance, high in instantaneity and suitable for the semistructured and nonstructured roads.

The present invention is a plank incorporating a base layer with a thickness ranging from 12 to 25 mm, a solid wood top layer, with a thickness ranging from 4.6 to 6 mm, glued to base layer, wherein the base layer is made of a wood based compound, also containing non flammable polymers, hardeners, etc., wherein the wood content of the compound is at least 2% by volume and 95% by volume at maximum, wherein the wood and the polymers are distributed homogeneously, or distributed, depending only on the perpendicular distance to the glued surface, wherein the glue between base layer and top layer is a non flammable glue. The plank of the invention combines the stability and homogeneity of the base layer with the appearance of a solid plank, and moreover has a flame retardant effect, caused by the structure of the product and by the use of fire retardant polymers.

A turbine blade including an airfoil having a pressure sidewall and a suction sidewall joined together along an upstream leading edge and a downstream trailing edge. The leading edge and trailing edge are formed as substantially straight edges, and portions of the pressure sidewall and suction sidewall adjacent the trailing edge form substantially planar surfaces. The airfoil has an uncoated nominal profile substantially in accordance with Cartesian coordinate values of X, Y and Z set forth in Table 1 wherein Z represents a perpendicular distance from a plane normal to a radius of a turbine centerline and containing the X and Y values with the Z value commencing at zero in the X, Y plane at a radially innermost aerodynamic section of the airfoil, and X and Y represent coordinate values defining the airfoil profile at each distance Z which, when connected by smooth continuing arcs, define profile sections at each distance Z.

A button assembly is described. The button assembly includes a light emitting device that emits light. The button assembly further includes a lens cap that protects the light emitting device from being damaged. The lens cap has a top surface, a first cap side, a second cap side, a third cap side, and a fourth cap side. The second cap side connected to the first cap side, the third cap side connected to the second cap side, and the fourth cap side connected to the first cap side and the third cap side to form a plane. A first perpendicular distance between the plane and a first point on the top surface is different than a second perpendicular distance between the plane and a second point on the top surface. Additionally, a system for increasing life of a pixel is described.

A wideband antenna includes a grounding unit electrically connected to a ground, a feed-in source for transmitting and receiving radio frequency signals, a first radiating body including a first radiating unit extending along a first direction, a second radiating unit extending along a second direction opposite to the first direction, and a conducting unit extending along a third direction, and a second radiating body including a short-circuit unit electrically connected to the grounding unit, a third radiating unit including a branch to generate a coupling connection effect with the conducting unit via a first distance, wherein an average perpendicular distance between the second radiating body and the grounding unit is smaller than an average perpendicular distance between the first radiating body and the grounding unit.

An embodiment of the invention provides a judgment method and device for lane changing trend of a vehicle and a computer storage medium. The judgment method for the lane changing trend of the vehicle comprises the following steps: selecting a frame of road image as a current frame of road image; recognizing and selecting an identification point of a targeted vehicle; recognizing a lane line; calculating a perpendicular distance from the identification point to the lane line and storing the perpendicular distance; and judging whether the targeted vehicle has the lane changing trend or not according to a perpendicular distance between at least one frame of road image prior to the current frame of road image and the current frame of road image, if the targeted vehicle has the lane changing trend, outputting a lane changing trend result, and if the targeted vehicle does not have the lane changing trend or the lane changing trend cannot be judged, repeating the above steps. According to the embodiment, transverse lane changing trend of the targeted vehicle can be effectively predicted in time, and therefore, danger of lane changing of the targeted vehicle to a current vehicle is avoided effectively.

The invention discloses a device and method for detecting panel strip shapes, and belongs to the technical field of metal panel detection. The device is characterized in that as is shown in the picture 1, a machine frame (3) is installed above a transverse striding conveying roller way (4), a rail is arranged below an upper beam (2) of the machine frame (3), and a first distance measuring instrument (A), a second distance measuring instrument (B) and a third distance measuring instrument (C) which serve as a whole are installed inside the rail below the upper beam (2) side by side and can be driven by a stepping motor (1) to do reciprocating movement. The distance between probes of every two adjacent distance measuring instruments is T. The direction in which a panel (5) is conveyed on the conveying roller way (4) is perpendicular to the direction of the rail below the upper beam. The operating method comprises the steps that firstly, in the process of conveying the panel, the three distance measuring instruments do once stroke on the rail by double width value of the panel to measure the perpendicular distance between each point in the panel and the distance measuring instruments; secondly, the measured distance value is recorded; thirdly, the detected and recorded data of each point are corrected and calculated. The device for detecting the panel strip shapes has the advantages of being simple in structure, low in manufacturing cost and reliable in operation, the strip shapes can be detected under the dynamic situation, and high measuring precision can be achieved.

The invention provides a method for preparing a steel-aluminum dissimilar metal overlap joint by adopting the CMT technology. The method comprises the following steps: an aluminum alloy plate is placed on a galvanized steel plate in an overlap manner and fixed by utilizing a fixture, wherein the overlap amount ranges between 5 mm and 20 mm; and a CMT welding machine is utilized, a welding gun is inclined towards the aluminum alloy plate to form an angle of 1-45 degrees with the vertical direction, the welding gun is inclined towards the forward direction by 5-30 degrees, the perpendicular distance between the welding gun and the galvanized steel plate is 10-20 mm, and the welding speed is 0.4-1.0 m/min. According to the method provided by the invention, the CMT technology is improved based on an original MIG welding power source, thereby converting molten droplet transfer into cold metal transfer, and reducing the metal spatter when the heat input during a welding process is reduced; and accordingly, the method is very suitable for welding of the aluminum alloy plate and the galvanized steel plate.

The invention relates to the field of sensor technology, and discloses a stress sensor, a preparation method and an electronic skin. The stress sensor includes: a dielectric layer (1), used for elastic deformation under the action of an external force; at least one first electrode unit ( 2), having stretchability, disposed on the upper surface of the dielectric layer (1); and at least one second electrode unit (3), having stretchability, disposed on the dielectric layer (1) The lower surface of the first electrode unit (2) and the second electrode unit (3) cross relatively to form a capacitor array; under the action of an external force, the vertical distance of the corresponding relative intersection changes, so that the capacitance on the corresponding capacitor Variety. The stress sensor of the invention can accurately detect the variation of capacitance and has high detection precision.

The invention discloses a spirit level for power transmission line n-shaped rod construction. The spirit level for power transmission line n-shaped rod construction comprises a span measuring ruler used for measuring the horizontal distance between two rod pits of an n-shaped rod and two depth measuring rulers arranged on the end portions of the span measuring ruler respectively. The span measuring ruler comprises a ruler sleeve and a telescopic ruler core sleeved inside the ruler sleeve. The outer surface of the ruler core is provided with a scale. A level gauge is arranged on the outer surface of the ruler sleeve. The depth measuring ruler comprises a lower ruler and a telescopic upper ruler sleeved inside the lower ruler. The outer surface of the upper ruler is provided with a scale. The spirit level for power transmission line n-shaped rod construction is convenient to use and capable of directly measuring the horizontal distance between the two rod pits and the perpendicular distance between the bottom faces of the two rod pits, offering instructive parameters for n-shaped rod construction, omitting a large number of calculation processes and improving the construction efficiency to a large extent. In addition, the spirit level for power transmission line n-shaped rod construction further has the advantages of being small in error, easy to transport and store and the like.

The invention relates to a valve, in particular a shuttle or sliding valve, for essentially gastight closing of a flow path (F). The valve includes a valve housing (1;1a) having a first wall (2) which has a first opening (3) and a first valve seat (4), a valve disk (5) having a closing side (6) with a sealing ring (7) and at least one drive (8). Through the drive (8), the valve disk (5) is pivotable or displaceable from an opened position (A) essentially parallel to the first valve seat (4), and the perpendicular distance between the valve disk (5), and the first valve seat (4) can be reduced so that, in the closed position (C), the flow path (F) is closed essentially gastight by an axially sealing contact between the sealing ring (7) and the first valve seat (4). The valve disk (5) includes an outer disk section (9), which is connected to the drive (8) and fixes the sealing ring (7) in the perpendicular direction to the first valve seat (4), and an inner disk section (10) which has an outer circumferential area (11) and which is mounted so as to be movable relative to the outer disk section (9) in a direction (Z) essentially perpendicular to the first valve seat (4). The outer circumferential area (11) is enclosed essentially gastight with an inner seal by the sealing ring (7). Thus, in the closed position (C), a pressure difference at the valve disk (5) acts essentially on the inner disk section (10) so that the inner disk section (10), decoupled from the outer disk section (9), is supported perpendicularly on a section of the valve housing (1), in particular the first valve seat (4) or a lateral groove (27).

The invention provides a tunnel settlement protecting device. The protecting device comprises protection single pieces. The protection single pieces comprise pile foundations, supporting beams, traction devices and supporting components. The supporting components are matched with the inner wall of a tunnel lining structure in shape. The pile foundations comprise first single pieces and second single pieces, wherein the first single pieces and the second single pieces are arranged on the two sides of the tunnel lining structure. The two ends of each supporting beam are arranged on the corresponding first single piece and the corresponding second single piece respectively. The minimum perpendicular distance between the first single pieces and the tunnel lining structure and the minimum perpendicular distance between the second single pieces and the tunnel lining structure are 1 m-10 m. The upper ends of the traction devices are fixed to the supporting beams, and the lower ends of the traction devices are throughout the tunnel lining structure and then are fixed to the supporting components. The overall structure is simplified, overall stability of the tunnel lining structure in the processes of holing and follow-up operation can be guaranteed, the problem that a tunnel settles for a long time on a soft soil layer is solved effectively, and maintaining cost is reduced. The invention further provides a construction method of the tunnel settlement protecting device, construction is convenient, and practicability is high.

A circular saw (1) includes a base plate (2) and a saw blade assembly (3) including a lower blade guard (9) for covering a saw blade (6). The blade guard includes a sleeve portion (10) rotatably fitted on a bearing box (8) coupled to the saw blade assembly and a sectoral portion (11) extending radially from the sleeve portion in the rear of the blade. A connecting bar (13) projects radially rearward from the sectoral portion. A spring (14) is stretched between the top of the connecting bar (13) and a lower rear portion of an upper blade guard (4) close to the base plate. When not in use, torque, generated as the product of the spring's tensile force and the perpendicular distance (S) from the line of action or the force to the axis of rotation (O), rotates the blade guard to a closed position.

A production system for a wind turbine component is described. The system includes an elongate mould assembly extending in a longitudinal direction, the mould assembly comprising a mould surface and having a width that varies in the longitudinal direction. First and second tracks are defined respectively on opposite longitudinal sides of the mould surface. The perpendicular distance between the respective tracks varies along the length of the track. A transport assembly is moveable relative the mould assembly in the longitudinal direction. The transport assembly includes a pair of side supports arranged to move along the respective tracks, and a gantry supported above the mould assembly by the side supports. The gantry extends transverse to the longitudinal direction. The transport assembly is configured such that the side supports move relative to one another in a direction transverse to the longitudinal direction in accordance with the varying distance between the tracks as the transport assembly moves in the longitudinal direction.

The invention discloses a colored film substrate. The colored film substrate comprises a substrate body, a color resistor layer and black matrixes, wherein the color resistor layer is directly arranged on the substrate body and comprises color resistors of different colors, and the black matrixes are directly arranged on the color resistor layer and arranged between every two adjacent color resistors. Due to the fact that the color resistor layer is directly formed on the substrate body and then the black matrixes are arranged on the color resistor layer, the perpendicular distance between the black matrixes and an array substrate is shortened, when light reaches the colored film substrate, unexpected emergent light is shielded through the black matrixes, the color cast phenomenon is reduced, the quality of displayed pictures is improved, and the yield of products is increased.

The invention relates to a valve, in particular a pendulum or slide gate valve, for essentially gastight closing of a flow path (F). The valve includes a valve housing (1) having a first wall (2) which has a first opening (3) and a first valve seat (4), a valve plate (5) having a closing side (6) with a first sealing ring (7) and at least one drive (8). By action of the drive (8), the valve plate (5) is pivotable or displaceable from an opened position (A) essentially parallel to the first valve seat (4), and the perpendicular distance between the valve plate (5), and the first valve seat (4) can be reduced so that, in the closed position (C), the flow path (F) is closed essentially gastight by an axially sealing contact between the first sealing ring (7) and the first valve seat (4). The valve plate (5) includes support part (9), which is connected to the drive (8) and fixes the first sealing ring (7) in the perpendicular direction to the first valve seat (4), and a sealing part (10) which has an inner circumferential area (11) and which is mounted so as to be movable relative to the support part (9) in a direction (Z) essentially perpendicular to the first valve seat (4). The inner circumferential area (11) encloses the first sealing ring (7) in an essentially gastight way with an inner seal. Thus, in the closed position (C), a pressure difference at the valve plate (5) acts essentially on the sealing part (10) so that sealing part (10), decoupled from the support part (9), is supported perpendicularly on a section of the valve housing (1), in particular the first valve seat (4) or a lateral groove (27).

The invention discloses a rice field composite ecological system which comprises a soybean planting area, a first rice planting area, a special type aquatic product aquiculture area and a second rice planting area. The soybean planting area, the first rice planting area, the special type aquatic product aquiculture area and the second rice planting area are sequentially arranged from one side of a rice filed to the other side, opposite to the side, of the rice filed. The soybean planting area is located on the ridge of the rice field, the first rice planting area is located at the periphery of the rice field and within the ridge of the rice field, the groove margin close planting mode is adopted in the first rice planting area, the special type aquatic product aquiculture area is located between the first rice planting area and the second rice planting area, the special type aquatic product aquiculture area is in a ring type, the perpendicular distance between the special type aquatic product aquiculture area and the ridge of the rice field is 60cm, and the large-ridge double-line planting mode is adopted in the second rice planting area.

The invention discloses a river cross section multipoint flow-measuring method based on fixed points. The method is implemented based on a radar flow-measuring meter which is fixedly installed above a river. The method comprises the steps that the altitude H of the place where the radar flow-measuring meter is located and the perpendicular distance w between the radar flow-measuring meter and the river cross section to be measured are obtained through measurement; the distance between each measuring point and the datum point O on the river cross section is obtained through measurement; flow measurement is conducted on all the measuring points in sequence, wherein before the flow velocity of each measuring point is measured, the horizontal orientation of the radar flow-measuring meter is adjusted first, and then the perpendicular dip angle of the radar flow-measuring meter is adjusted, so that the detection direction of the radar flow-measuring meter is right opposite to the measuring point, and flow measurement is conducted. The river cross section multipoint flow-measuring method is only based on one radar flow-measuring meter, and multipoint flow-measuring operation can be realized at multiple measuring points on the same river cross section just through adjustment of the horizontal orientation and the perpendicular dip angle of the radar flow-measuring meter.

A method for obtaining a modulation transfer function (MTF) of a knife-edge target imaged by an electro-optical device is described. The method includes the steps of: (a) obtaining edge response data points, where a data point includes a perpendicular distance, d, to the knife-edge target; and (b) constructing a sequence of line slopes of the edge response data points, where a line slope includes a spread of edge response data points. The method then selects a line slope that minimizes the spread of edge response data points, and calculates the MTF, based on the edge response data points included in the selected line slope. The MTF is provided to a user. An edge response data point is defined by a pair of values of (d, E) of a pixel, where distance, d, is the shortest distance between the pixel and a line slope and the pixel has an intensity value, E.

The invention provides a display panel mother board, and belongs to the technical field of display. The problem that during cutting of an existing display panel mother board, due to the fact that supporting force is not uniform, cutting cracks are worsened is solved. The display panel master board comprises a first substrate and a second substrate which are oppositely arranged. The first substrate and the second substrate each comprise a display area and a non-display area located on the outer side of the display area; in the non-display area of the first substrate, a first spacer and a second spacer are sequentially arranged in the direction away from the display area; the perpendicular distance d1 between the end face, close to the second substrate, of the first spacer and the surface, close to the first substrate, of the second substrate is equal to a perpendicular distance d2 between the end face, close to the second substrate, of the second spacer and the surface, close to the first substrate, of the second substrate, so that the pressure borne by the position, corresponding to the first spacer, of the first substrate and the pressure borne by the position, corresponding to the second spacer, of the first substrate are uniform when a display panel is formed by cutting the display panel mother board.

The invention discloses a method of improving center segregation quality of hypo-peritectic steel casting slabs, and belongs to the technical field of slab continuous casting. According to the method,two pairs of electromagnetic stirring rollers are arranged in a secondary cooling zone, and the two pairs of electromagnetic stirring rollers are installed at corresponding positions 3.5 to 8 m perpendicular distance from a crystallizer meniscus; the two pairs of electromagnetic stirring rollers are arranged in a three-ring manner; magnetic field directions generated by the electromagnetic stirring rollers are changed at intervals of 15 seconds; the current of the first pair of electromagnetic stirring rollers is 200 to 300 A, and the frequency is 2 to 4 Hz; the current of the second pair ofelectromagnetic stirring rollers is 300 to 400 A, and the frequency is 3 to 5 Hz; and meanwhile, the dynamic soft reduction technology is employed for processing nearby a solidification end point, thereduction interval of dynamic soft reduction is arranged at a position that the solid fraction of each casting slab is 10 % to 80 %, the reduction rate is 0.8 to 1.5 mm/m, and the total reduction amount is 4.0 to 5.5 mm. The method disclosed by the invention is capable of stably controlling center segregation of the hypo-peritectic steel casting slabs to be C 0.5 to C 1.5; hot charge rolling is realized on all the hypo-peritectic steel casting slabs; and tensile layering and rupturing of hot-rolled coils (plates) is eliminated.