93results about How to "Reduce distribution density" patented technology

A method and apparatus are provided for adaptively allocating pilots in a pilot-aided channel estimation system. A multipath delay is measured between a base station (BS) and a mobile station (MS). A distribution density of pilots of a signal to be transmitted between the BS and the MS is controlled. When the multipath delay is large, the pilot distribution density is relatively raised. However, when the multipath delay is small, the pilot distribution density is relatively lowered. The pilot distribution density is adaptively controlled according to the multipath delay, such that resources are effectively utilized and throughput is improved.

The invention relates to a novel graphene material and a chemical vapor deposition (CVD) preparation technology, and in particular relates to a preparation method of high-quality large-size monocrystal graphene, suitable for preparing high-quality large-size monocrystal graphene. The preparation method comprises the steps of: based on a chemical vapor deposition technology, in the presence of a carrier gas containing hydrogen, carrying out heat treatment on a metal substrate (copper, platinum and other metals) by taking a hydrocarbon compound as a carbon source, and carrying out catalytic cracking at a high temperature by virtue of the carbon source gas, so as to grow the monocrystal graphene; etching graphene by regulating concentrations of hydrogen and carbon source, so as to greatly reduce distribution density of the monocrystal graphene; and regulating a reaction atmosphere again to grow monocrystal graphene again, and carrying out the growth operations several times in the same way, so as to finally obtain the high-quality large-size monocrystal graphene. The high-quality inch-grade monocrystal graphene disclosed by the invention lays the foundation for application in a nano-electronic component, a transparent conductive film, a display, a solar cell electrode, a gas sensor, a thin-film electronic component and other photoelectric fields.

The invention relates to an OLED display panel. The OLED display panel comprises a first electrode and a second electrode which are oppositely arranged and a laminate arranged between the first electrode and the second electrode, wherein the laminate at least comprises a first auxiliary light emitting layer and a light emitting layer which are sequentially arranged from the first electrode; the first auxiliary light emitting layer selects a host-guest doped form, a radialene compound is doped in a host material, hole injection rate is improved by utilizing stronger hole injection capacity of the radialene compound, voltage of a device is reduced, further light emitting efficiency is improved, and a horizontal leakage current phenomenon is reduced.

The invention discloses a method for segmenting a gray scale image based on the multi-objective particle swarm optimization algorithm, relates to the technical field of image processing, and mainly solves a problem that a traditional method is single in evaluation index, has high possibility of leading poor consistency of regions, and is disordered in edge. The method comprises the following steps: (1) extracting characteristics of a gray scale image to be segmented, namely selecting a gray scale of the image as data for a cluster to be clustered; (2) setting an operating parameter and initializing a particle swarm; (3) performing multi-objective clustering on the data combining the multi-objective particle swarm optimization algorithm to obtain a solution set approximate to Pareto; (4) selecting a solution with the largest PBM index from the solution set obtained in the step (3) as the optimal solution, namely a clustering result; (5) allocating a clustering mark to each pixel of the image to be segmented according to the clustering result obtained in the step (4) to obtain a segmenting result. The method has the advantages that the consistency of regions is good according to the segmenting result, complete information can be reserved, and the computing speed is quick, and can be used for image target identification.

The invention provides a production method of polycrystalline silicon chips. The production method includes: preparing polycrystalline silicon ingots; cutting the polycrystalline silicon ingots into polycrystalline silicon chips. The steps for cutting the polycrystalline silicon into silicon chips include: cutting the polycrystalline silicon ingots into silicon blocks along the growing direction of the crystal lattice; stacking at least two silicon blocks and aligning and bonding the two bigger side faces of the two silicon blocks along a length direction; cutting the silicon blocks into silicon strips along a direction vertical to the length direction of the silicon blocks; and cutting the silicon strips into silicon chips along a growing direction of the crystal lattice. With the production method of polycrystalline silicon, the existing cutting method that the polycrystalline silicon blocks are cut along a direction vertical to the crystal lattice growth direction is changed into a cutting method that the polycrystalline silicon blocks are cut along a direction parallel to the crystal lattice growth direction, so that crystal particles of single silicon chips are expanded and amplified, distribution density of defects such as crystal boundary and dislocation is decreased and inner quality factors of battery pieces are improved.

Disclosed is a surface covered tool, such as a cutting tool (1), wherein the surface of a base body (2) is covered with a cover layer (6), the cover layer (6) is composed of a lower layer (8) and an upper layer (9), and the lower layer (8) and the upper layer (9) are both composed of columnar particles (10) extending perpendicularly to the surface of the base body (2). The average crystal width of the columnar particles (10b) constituting the upper layer (9) is smaller than the average crystal width of the columnar particles constituting the lower layer, dispersed particles containing tungsten exist in both the lower layer and the upper layer, and the distribution density of the dispersed particles existing in the upper layer is smaller than the distribution density of the dispersed particles existing in the lower layer. The surface covered tool is provided with the cover layer which improves abrasion resistance and defect resistance.

The invention discloses an arrival time-based cooperative localization method applied to a wireless sensor network, which uses a second-order cone relaxation technique and a positive semi-definite relaxation technique to relax a minimization problem obtained by constructing a maximum likelihood function to obtain a description of the problem mixing positive half-definite and second-order cone programming; thus, a global optimal solution can be ensured to obtain without the influence of local convergence, and the localization accuracy is high; the influence of measurement noise error can be effectively suppressed; meanwhile, the prior art can be used for solving an estimate value of the coordinates of an unknown target source, thereby reducing the distribution density of the anchor nodes and reducing the cost.

The invention relates to a light emitting device having a radiation emitting element, for example a light emitting diode, and a luminescent material which is able to absorb a part of the radiation sent out by the radiation emitting element and to send out light with a wavelength which is different from the wavelength of the absorbed radiation. The device further has diffusing particles which are able to scatter a part of the radiation sent out by the radiation emitting element, and / or to scatter a part of the light sent out by the luminescent material. The diffusing particles are of non-activated luminescent material, through which production is simplified.

The present invention relates to a lighting device (10) comprising a tiled light guide (16) comprising a central tile (12b) and at least one end tile (12a, 12c), the end tile(s) (12a, 12c) being arranged at an edge (24, 26) of the light guide (16); at least one solid state light source (18) arranged for coupling light into the light guide (16) in a general direction towards or away from the end tile(s) (12a, 12c); and a plurality of out-coupling structures (20) arranged for coupling light out of the light guide (16); wherein the end tile(s) (12a, 12c) has inherent in-coupling and / or inherent out-coupling of light different from the central tile (12b).

The invention discloses a backlight module and a liquid crystal display. The backlight module comprises a back plate, a light source arranged on the back plate, and a fluorescent film arranged above the light source, and fluorescent particles are distributed in the fluorescent film and are used for scattering light emitted by an LED, wherein the distribution density of the fluorescent particles gradually decreases from the center to the periphery of an area in the area of each LED corresponding to the fluorescent film. Based on the backlight module, the uniformity of brightness of emergent light of the backlight module is improved, and the large viewing angle display quality of an LCD is improved.

The invention relates to an LED (Light Emitting Diode) panel lamp, which comprises a lamp frame, a substrate, a plurality of blue-light LEDs, a light guide plate, a diffusion plate and a film doped with fluorescent powder. The light guide plate and the diffusion plate are embedded in the lamp frame. The substrate is arranged on the internal side surface of the lamp frame which faces to the side surface of the light guide plate. A plurality of cup troughs are abreast arranged on one side, which faces to the side surface of the light guide plate. of the substrate. One blue-light LED is installed in each cup trough. The blue-light LEDs are connected in series or in parallel. The film is attached onto the side surface, which faces to the blue-light LEDs, of the light guide plate. The light guide plate is provided with a light reflecting film. The light reflecting film is attached onto one surface of the light guide plate. The diffusion plate is arranged on the other surface, which is opposite to the light reflecting film, of the light guide plate. The LED panel lamp has the advantages that the emergent light is relatively uniform, the problem of glaring does not occur, the influence of a single damaged LED on the overall lighting effect is smaller, and the illuminating effect is better; since the blue-light LEDs are abreast arranged, the distribution density is lower and the heat dissipating effect is better; and since the blue-light LEDs are directly installed in the cup troughs, the production process is simple and the production cost is reduced.

A display panel is disclosed. The display panel is divided into a central region and a peripheral region. The central region is located at a central position of the display panel. The central region is extended outward from the central position and occupies a predetermined area. The peripheral region surrounds the central region. It is noted that distribution density of the pixels located in the central region is greater than that of the pixels located in the peripheral region. The present invention can solve the problem of circuit instability caused by disposing a large number of pixels on a high-resolution display panel.

A display device includes a first substrate and a second substrate, which face each other, and each of which includes a display area and a non-display area disposed outside the display area, a first light-blocking layer disposed in the non-display area, and a dummy color layer, in which a boundary dividing the display area and the non-display area is defined, and which is disposed in the non-display area of the first substrate to be adjacent to the boundary, where the dummy color layer includes a section in which a distribution density of the dummy color layer is decreased from the boundary to the outside of the non-display area.

The invention provides a detection circuit of an array substrate and the array substrate. The detection circuit comprises a signal pin area, a test pin area and a fan-out wiring area, wherein the signal pin area include multiple signal pins, the signal pins are correspondingly connected with signal lines in the array substrate, the test pin area include multiple testing pins, the fan-out wiring area is connected between the signal pin area and the test pin area and comprises multiple fan-out wires, the signal pins are connected to a part of testing pins through the fan-out wires and are not mutually adjacent to the test pins connected with the signal pins, and accordingly the height of the fan-out wiring area is decreased.

The invention discloses a rail train and a train body thereof. The train body mainly comprises a box body structure formed by connecting an arc roof profile, an air conditioner plate profile, a side wall plate profile, a bottom frame floor profile, a door vertical column bending profile, a roof camber beam bending profile, an overall door corner, roof side beam profiles and bottom frame side beamprofiles. A pulling buffering structure is mounted at the bottom of the bottom frame floor profile. The roof side beam profiles, the bottom frame side beam profiles, the arc roof profile, the air conditioner plate profile, the side wall plate profile, the bottom frame floor profile and the pulling buffering structure are made of nano-ceramic aluminum alloy materials. The problem that further weight reduction of a traditional aluminum alloy vehicle body is difficult due to the limitation of the strength of materials is solved, and the durability and the reliability are not affected.

The invention discloses a flat water-cooling heat radiation device, which comprises an upper cold plate and a lower cold plate, wherein the top surface of the upper cold plate and / or the bottom surface of the lower cold plate are contacted with a heating device; a plurality of downwards protruded platforms are arranged on the bottom surface of the upper cold plate; a plurality of upwards protruded platforms are arranged on the top surface of the lower cold plate; the lower protruded platforms on the bottom surface of the upper cold plate are staggered with the upper protruded platforms on the top surface of the lower cold plate; a flow channel is formed between the bottom surface of the upper cold plate and the top surface of the lower cold plate; cooling liquid flows in the flow channel so as to take away heat of the upper cold plate and the lower cold plate. According to the flat water-cooling heat radiation device, the manufacturing cost and the manufacturing difficulty can be reduced, and the heat radiation performance is improved.

An underlying substrate including a seed crystal layer of a group 13 nitride, wherein projections and recesses repeatedly appear in stripe shapes at a principal surface of the seed crystal layer, and the projections have a level difference of 0.3 to 40 μm and a width of 5 to 100 μm, and the recesses have a bottom thickness of 2 μm or more and a width of 50 to 500 μm.

The invention discloses a positioning system and a positioning method in a garage based on RFID recognition. There are RFID readers with the number of a (1) and RFID read-write trigger devices with the number of b (2) in a garage. Each RFID read-write trigger device (2) is wired / wireless connected with an RFID reader (1) in the detection area; and an RFID reader is connected to a garage server. AnRFID read-write trigger device (2) sends a trigger signal to an RFID reader (1) after detecting a vehicle / person, so that the RFID reader (1) reads the RFID tag of the vehicle / person. Beneficial effects are that an RFID read-write trigger device will start an RFID reader only when a vehicle / person enters the detection area of the RFID read-write trigger device and the device detects the presenceof the vehicle / person, and the energy consumption of an RFID read-write trigger device is lower than that of an RFID reader, which makes the RFID reader not open frequently and saves energy consumption.

The invention provides a fence rack for lycium barbarum L. cultivation. Meanwhile, the invention further provides a fence rack-based lyciumbarbarum L. cultivation technology. The fence rack cultivation method can improve tree fruiting height and space, rises fruiting main branches, cultures stereoscopic fruiting branch sets, prevent fruiting branch tip lying on the ground, improve fruiting output and enhance fruit quality.

The invention discloses a water collection pit anti-floating integral formwork system and an installing method for the formwork system. The formwork system comprises a coverless box type formwork anda supporting system arranged in the box type formwork, wherein the box type formwork is formed by assembling a plurality of side dies and a bottom die. The bottom die and the side dies are fixedly arranged on bottom steel bars and side face steel bars of a steel bar support correspondingly. The bottom die and the side dies are concrete prefabricated plates internally provided with steel bar nets,and a plurality of segmented water stop screws are arranged between the bottom die and the bottom steel bars and between the side dies and the side face steel bars, wherein the segmented water stop screws are distributed in a grid-like manner. A plurality of vibration holes are evenly distributed in the bottom die and between the water stop screws. During installation, the segmented water stop screws, the bottom die and the side dies are installed, and then the supporting system is arranged in the box type formwork formed by assembling the side dies and the bottom die. According to the obtained water collection pit anti-floating integral formwork system and the installing method for the formwork system, formwork removal is not needed, time and labor are saved for formwork installation, andthe construction period is short.

The invention discloses a composite large-area crusher cavity. The cavity comprises a feeding cavity, an accelerating cavity, a flow guiding cavity, a crushing cavity, finishing cavities and discharging cavities; the accelerating cavity comprises two accelerating rollers; the crushing cavity comprises two crushing rollers; the top of the feeding cavity is provided with a feeding port; the positions below the two accelerating rollers are each provided with a material guiding plate; the position between the two material guiding plates is provided with a material dividing device; first beat-backplates are fixed to the bottom ends of the two material guiding plates; the side walls of the two finishing cavities are each sequentially provided with a second beat-back plate and a third beat-backplate in sequence from top to bottom; a plurality of rows of anti-slip teeth are uniformly arranged on the third beat-back plates; and the discharging cavities with discharging ports are formed belowthe two crushing rollers correspondingly. The composite large-area crusher cavity is simple in structure, can be used for accelerating materials entering a crusher, and guides the materials to a preset path to be subjected to repeated large-area crushing, convenience is brought to crushing and finishing, the quality of crushed materials is increased, the powder amount is reduced, and the crushingefficiency is improved.

The invention provides a laser radar and a manufacturing method thereof. Through mixed arrangement of emitter devices and detection devices, the laser radar not only reduces energy density of probe laser in a plane vertical to the light propagation direction and improves AELs.p.train limit of the laser radar, thereby achieving purposes of prolonging the laser radar detection distance and expandingthe laser radar detection range, but also reduces impact on existing laser radar paths as far as possible and prevents increasing the size of the laser radar, thereby achieving a purpose of controlling the manufacturing cost and process difficulty of the laser radar. The technical scheme can give consideration to high integration level and low process difficulty under the premise of ensuring highsafety and large detection distance.

The invention discloses a distribution transformer fault detection method and device in the technical field of fault detection. The distribution transformer fault detection device comprises a distribution transformer, a mutual inductor, an infrared temperature detector and a cooling mechanism. A primary side three-phase winding and a secondary side three-phase winding are arranged in the distribution transformer; the mutual inductor and the infrared thermoscope are respectively arranged beside the primary side three-phase winding and the secondary side three-phase winding; the cooling mechanism comprises a cooling mechanism and a detection mechanism; the cooling mechanism and the detection mechanism are respectively arranged at the lower end of the distribution transformer, and the mutual inductor is externally connected with an online detection system; the mutual inductor is used for detecting electrical signals of the primary side three-phase winding and the secondary side three-phase winding; the on-line detection system is used for receiving electrical signals of the primary side three-phase winding and the secondary side three-phase winding to calculate the loss power change rate of the distribution transformer and determining the maintenance strategy of the distribution transformer according to the loss power change rate.

The weaving method of band core of apron band includes the following steps: using n inlets, respectively feeding two pairs of warp yarns from every inlet; using four heddles, every heddle has n heddle eyes, distance between two heddle eyes is the heigth of one shed, every work circulation can form n+1 diamond sheds; feeding n+1 weft yarns, using warp yarns to alternatively strap n+1 layers of weft yarns according to identical movement reguliarity to form the invented apron band with n+1 layer of weft yarns. Said invention adopts combination of multished formation and multi-repair weft insertion, and users vertical weaving process to raise product yield and quality, and can produce wide-width high-strength heavy apron band.