164results about How to "Densely distributed" patented technology

This invention discloses a two-layer gas inlet blow head of a metal organic chemical gas phase deposit device including a closed shell having an upper gas inlet cavity and a lower gas inlet cavity, an upper escape pipe communicating with the upper gas cavity and reaction chamber is set between the upper-middle and the base plate and a lower escape pipe communicating with a lower gas inlet cavity and the reaction chamber is set between the lower plate and base plate characterizing that diameter of the lower escape pipe is layer than the upper and the upper is put in the lower. A cooling cavity is designed, the first reaction gas enters into the reaction chamber at the substrate surface from the upper and lower escape pipes separately.

The present invention provides an electronic assembly 400 and a method for its manufacture 800, 900, 1000 1200, 1400, 1500, and 1700. The assembly 400 uses no solder. Components 406 or component packages 402, 802, 804, 806 with I/O leads 412 are placed 800 onto a planar substrate 808. The assembly is encapsulated 900 with electrically insulating material 908 with vias 420, 1002 formed or drilled 1000 through the substrate 808 to the components' leads 412. Then the assembly is plated 1200 and the encapsulation and drilling process 1500 repeated to build up desired layers 422, 1502, 1702. The planar substrate 808 may be a flexible substrate 2016 allowing bending of an assembly 2000 to fit into various enclosures.

The invention relates to a vehicle positioning method and apparatus, and a vehicle and specifically relates to the field of vehicles. The method comprises the following steps: obtaining a current position of a vehicle; identifying a street lamp disposed in front of the current position of the vehicle; measuring a distance between the identified street lamp and the current position of the vehicle; by use of a map, based on the current position of the vehicle, determining longitude and latitude of the identified street lamp, wherein the map comprises latitude and longitude information and elevation information of street lamps at the two sides of a road; and according to the longitude and latitude of the identified street lamp and the distance, correcting the current position of the vehicle. The method can solve the disadvantages of too high cost and quite large errors existing in prior vehicle positioning arts and can accurately position the vehicle at a quite low cost.

A transmitter subsystem generates an optical signal which contains multiple subbands of information. The subbands have different polarizations. For example, in one approach, two or more optical transmitters generate optical signals which have different polarizations. An optical combiner optically combines the optical signals into a composite optical signal for transmission across an optical fiber. In another approach, a single optical transmitter generates an optical signal with multiple subbands. The polarization of the subbands is varied, for example by using a birefringent crystal. In another aspect of the invention, each optical transmitter generates an optical signal containing both a lower optical sideband and an upper optical sideband (i.e., a double sideband optical signal). An optical filter selects the upper optical sideband of one optical signal and the lower optical sideband of another optical signal to produce a composite optical signal.

The invention discloses a Faraday measurement apparatus for beam. The apparatus comprises a sealing socket (1), a Faraday cup mounting plate (2), a Faraday collection frame (3), a graphite baffle plate (4), a magnetic conductive plate (5), and micro Faraday cups (6). The micro Faraday cups (6) are installed at the Faraday cup mounting plate (2); the Faraday cup mounting plate (2) is fixed at an ion implanter based on connection of the Faraday collection frame (3); and the graphite baffle plate (4) is installed at the Faraday collection frame (3) and is located at a front position at the inlets of the micro Faraday cups (6). The apparatus is characterized in that 21 micro Faraday cups (6) are arranged and the 21 micro Faraday cups (6) and the magnetic conductive plate (5) are installed at the Faraday cup mounting plate (2) in parallel in a vacuum environment; the currents of the Faraday cup mounting plate (2) are led out by the sealing socket (1); and the sealing socket (1) is fixed at the position, approaching the Faraday cup mounting plate (2), of the Faraday collection frame (3). According to the invention, the beam measurement angle is accurate; the sealing performance influence on the vacuum system by the apparatus is low; and the generated heat is low. The invention relates to an ion injection device which belongs to the semiconductor manufacturing field.

The invention discloses a preparation method and application of a silicon-based spiny nanocone ordered array. The preparation method comprises the steps: preparing a tightly-arranged single-layer ordered PS sphere array on a silicon wafer substrate; heating the single-layer ordered PS sphere array on the silicon wafer substrate; then, carrying out etching by using a reactive ion etching method, and regulating an etching current at least once in the etching process; and then, after finishing the etching, removing the single-layer ordered PS sphere array on the silicon wafer substrate to preparethe silicon-based spiny nanocone ordered array. A layer of gold film is deposited on the surface of the silicon-based spiny nanocone ordered array serving as a template by using a physical depositionmethod to prepare a silicon-based spiny nanocone ordered array on which the gold film is deposited, and the silicon-based spiny nanocone ordered array can be directly used as a substrate material with surface-enhanced Raman effect. The preparation method is simple, convenient to operate, low in cost, economic and environment-friendly; and the prepared silicon-based spiny nanocone ordered array islarge in structure area, good in uniformity, clean in surface, high in sensitivity and good in detection property.

The invention discloses a diagnostic method of an aero-engine rotor fault. According to the method, an eddy current acceleration sensor is firstly utilized to collect a vibration acceleration signal of an aero-engine rotor, then noise reduction processing is performed on the vibration acceleration signal of the aero-engine rotor, and the signal characteristic quantity of the aero-engine rotor after the noise reduction is extracted, and then clustering analysis is performed on the signal characteristic quantity based on automatic density peak clustering of Mahalanobis distance. According to thefault diagnosis method, wavelet decomposition is utilized, threshold processing is performed, and then noise interference is removed from a signal by lifting wavelet reconstruction; the signal characteristic quantity after the noise reduction is extracted, and the clustering analysis is performed on the signal characteristic quantity based on the automatic density peak clustering of Mahalanobis distance, so that the noise interference can be eliminated to a minimum value, the diagnosis of fault information of the aero-engine rotor can be realized, and fault results of various aero-engine rotors can be quickly obtained.

The invention discloses a crowd number counting method and system based on a scale adaptive network. The method comprises the steps of obtaining an original image containing crowds and zooming the original image; generating a density map according to the zoomed image, and randomly intercepting image blocks for the image and the density map respectively; utilizing the image blocks and the density image blocks corresponding to the image blocks to train a scale adaptive network; and outputting a density map for each image by using the trained scale adaptive network, and summing all pixels in thedensity map to finally obtain all people in the original image. According to the invention, the accuracy of crowd counting and the robustness to head size differences and complex backgrounds are effectively improved.

The invention relates to a plate-and-frame filter press which comprises a support, two cross beams and a hydraulic compressing device arranged on the support, wherein a push plate, a stop plate and a plate-and-frame group are arranged between the two cross beams, one side of each plate frame is in a plane structure, another side of each plate frame is a frame convex, each plate frame has a concave structure inside, one side of each plate frame plane is provided with a plate frame extruding balance beam, a spring and a small hydraulic cylinder are arranged between each plate frame and each plate frame extruding balance beam, a hydraulic oil opening is arranged on a small hydraulic cylinder body, the hydraulic oil opening is connected with a hydraulic oil support pipe, and a hydraulic oil branch pipe on each plate frame is communicated with a hydraulic oil main pipe on each plate frame. The position except a material inlet on the surface at one side of each plate frame is provided with an automatic filter cloth cleaning device. The plate-and-frame filter press is simple in structure, each plate frame can be synchronously pushed in the process of filter-press, the plate frames can be compacted with one another, the material can not be lost, the plate-and-frame filter press is high in filter-press efficiency, the workload of the hydraulic compressing device can be effectively reduced, each plate frame can not deform or be damaged, and the plate-and-frame filter press has a function for cleaning a filter cloth on line.

The high precision tungsten plate producing process is especially suitable for producing high precision shielding tungsten plate for CT machine. The production process includes coating the blank tungsten plate with graphite emulsion of 15-20 wt% concentration, rolling after homogeneous heating, electrolytic polishing and pressurizing flattening. The said process is suitable for production of high precision tungsten plate with thickness deviation within 0.01 mm, flatness within 0.005 mm, lower surface roughness and sizes 0.203x146.05x257.05 mm.

The invention relates to the field of solar batteries, in particular to a main-grid-free high-efficiency back contact solar battery module, an assembly and a preparing process. The solar battery module comprises a battery piece and an electric connecting layer, wherein the back light side of the battery piece is provided with an electrode P connected with a P type doping layer and an electrode N connected with an N type doping layer. The solar battery module is characterized in that the electric connecting layer comprises a penetrating hole and a conducting wire, the conducting wire is respectively arranged at the front side and the back side of the electric connecting layer, the front side conducting wire is electrically connected with any one electrode, the back side conducting wire is electrically connected with the other electrode through conducting media in the through hole, and the electric connecting layer is made of insulation materials. The solar battery module, the assembly and the preparing process have the beneficial effect that the low-cost hidden-crack-resistant high-efficiency and high-stability solar battery assembly capable of preventing emitting electrode P and emitting electrode N short circuit is provided.

The invention relates to the field of solar cells, in particular to a high-efficiency back contact solar cell back sheet without main grids, a high-efficiency back contact solar cell assembly without main grids and a manufacturing technology of the high-efficiency back contact solar cell assembly. The back contact solar cell back sheet is characterized by sequentially comprising an electric connection layer and a basic layer from top to bottom, the electric connection layer and the basic layer are connected through adhesive, and the electric connection layer comprises two or more finger-shaped electrodes, all the finger-shaped electrodes are alternatively arrayed in an interdigital shape, and the electric connection layer is used for being connected with a back contact cell piece. The back contact solar cell back sheet has the advantages of being high in efficiency and resistant to subfissure, shading losses of grid line electrodes on the front face are eliminated, and therefore the cell efficiency is improved; the cell can be sheeted, and therefore the cost is lowered; practicability is higher, and the back contact solar cell back sheet is generally suitable for an MWT structure, an EWT structure, an IBC structure and other structures.

The present invention provides an electronic assembly 400 and a method for its manufacture 800, 900, 1000 1200, 1400, 1500, 1600, 1700. The assembly 400 uses no solder. Components 406, or component packages 402, 802, 804, 806 with I/O leads 412 are placed 800 onto a planar substrate 808. The assembly is encapsulated 900 with electrically insulating material 908 with vias 420, 1002 formed or drilled 1000 through the substrate 808 to the components' leads 412. Then the assembly is plated 1200 and the encapsulation and drilling process 1500 repeated to build up desired layers 422, 1502, 1702. Assemblies may be mated 1800. Within the mated assemblies, items may be inserted including pins 2202a, 2202b, and 2202c, mezzanine interconnection devices 2204, heat spreaders 2402, and combination heat spreaders and heat sinks 2602. Edge card connectors 2802 may be attached to the mated assemblies.

A well base rotary engine relates to a fuel-oil engine. It overcomes the defects of large configuration and much occupation space in automobile of the existed fuel-oil engine with crank plunger mechanism. It contains at least two cylinders (1), two plungers (2), two dowel steels (5), two groups of linking mechanisms (3), lead strip (10) and well base (4). The (10) is fixed on the upper surface with high-low fall of (4) around its circle brim. The (1) are set above (10) and are located uniformly along its direction. The upper end of (5) is fixed on (2) and its lower end links (10) through (3) to realize its sliding along (10). The (2) makes downward movement under gas expansive action. The (10) rotates winding self axel on horizontal direction when (5) compressing its high spot downward. As (1) in this invention arranges around circle of (4) replacing linear distribution of traditional cylinder, the distribution is dense and the structure is compact.

The invention provides a pyroelectric infrared sensor-based lighting control device and system. The device comprises a focusing assembly and at least two pyroelectric infrared sensors, wherein the focusing assembly comprises at least two arc-shaped curved surface structural parts which are sequentially connected and are adjacent to each other, each arc-shaped curved surface structural part is corresponding to a focusing point, the at least two pyroelectric infrared sensors are respectively arranged at each focusing point, the focusing assembly is used for focusing an external infrared signal onto each pyroelectric infrared sensor, and the at least two pyroelectric infrared sensors are used for converting a changing infrared signal to a voltage signal when the changing infrared signal is received by one arbitrary pyroelectric infrared sensor so as to further control a switch-on state of a lighting lamp by the voltage signal. With the device provided by the embodiment of the invention, the inductive sensitivity of the pyroelectric infrared sensors can be effectively improved, and the infrared signal within a relatively large range can be sensed.

The invention relates to the technical field of precise machining tools, and discloses a cutter and a tool bit structure thereof. The tool bit structure comprises a connecting part, and a cutting edgepart arranged at the front end of the connecting part; the cutting edge part comprises a cutting main body fixed at the front end of the connecting part, and multiple first cutting edges; the outer surface of the cutting main body is an arc surface projected outwards; the first cutting edges are spiral; the edge number S of the first cutting edges and the diameter D of the cutting main body meetthe relation of S not smaller than 4D and not larger than 15 D; the diameter D of the cutting main body is 0.5-32 mm; and the edge width L of the first cutting edges is 0.01-0.1 mm. The cutter has thefollowing benefits: the cutter is used for milling curved surfaces; under the same diameter, the edge distribution density is high, the surface roughness is excellent, and the machining efficiency ishigh; and when the cutter is applied to machine 3D glass graphite molds in a CNC, the surface roughness can reach 90 nm.

The invention discloses a fan-shaped gas inlet spray head for metal organic chemical vapor deposition equipment, which comprises an enclosed shell body. The shell body comprises an upper plate, a middle plate and a lower plate; a gas inlet chamber for allowing the gas to enter is formed between the upper plate and the middle plate; a cooling chamber is formed between the middle plate and the lower plate; and the gas inlet chamber is divided into a plurality of fan-shaped areas isolated from one another. A plurality of heat-conducting thin tubes are fixed between the middle plate and the lower plate in each fan-shaped area, the thin tubes extend out of the cooling chamber in the height direction of the shell body, the open ends of the thin tubes are communicated with the gas inlet chamber, and the outlet ends of the thin tubes face the surface of an adjacent substrate; and mutually different reaction gases are introduced into at least two fan-shaped areas of the gas inlet chamber. The different reaction gases can be uniformly delivered to a reaction chamber through the fan-shaped areas. The pre-reaction can be reduced and the high-quality epitaxial growth of materials can be realized by controlling the rotational speed of the substrate, and a common epitaxial growth mode can be realized by improving the rotational speed of the substrate.

The invention relates to computerized embroidery devices, and aims to provide a double-color sequin embroidery sequin feeding device. The device can realize bidirectional sequin conveying, and has thecharacteristics of high working efficiency, small size and high utilization rate. The technical scheme is that the multifunctional double-color sequin embroidery sequin feeding device comprises sequin feeding mechanisms, wherein each sequin feeding mechanism comprises a sequin wheel for gradually releasing stored sequin strips, a bottom plate provided with a sequin feeding groove for guiding themovement of the sequin strips, a shifting component for driving the sequin strips released from the sequin wheel to directionally move in the sequin feeding groove and a cutter component for regularlycutting off sequins to separate the sequins from the sequin strips in cooperation with the movement of a machine needle. The device is characterized in that the double-color sequin embroidery sequinfeeding device is provided with two sequin feeding mechanisms which are distributed on the left and right sides of a lower support plate; and the shifting components in the two sequin feeding mechanisms are simultaneously driven by a driving component to simultaneously perform reverse sequin feeding movement.

The invention belongs to the solar battery field and relates to a main gate-free, high-efficiency and back-contact solar battery backplane, assembly and preparation process. The main gate-free, high-efficiency and back-contact solar battery backplane includes an electrical connection layer and a base layer which are distributed from top to bottom, wherein the electrical connection layer is connected with the base layer through an adhesive; the electrical connection layer includes conductive wires and insulated wires; the conductive wires and the insulated wires are braided so as to form a net structure; and the insulated wires are braided between adjacent conductive wires. With the main gate-free, high-efficiency and back-contact solar battery backplane, assembly and preparation process provided by the invention adopted, short circuiting of P electrodes and N electrodes can be effectively prevented. The main gate-free, high-efficiency and back-contact solar battery backplane, assembly and preparation process of the invention have the advantages of low cost, high efficiency, high hidden crack resistance and high stability.

The invention relates to a solar cell electrode machining device, which comprises a jacking mechanism for jacking a solar cell, a wire clamping mechanism for fixing resistance wires, and an automatic wire feeding device for feeding the resistance wires into the wire clamping mechanism, wherein the automatic wire feeding device comprises an automatic wire feeding mechanism, a silver paste soaking device, an upper and lower wire drawing device, a wire shearing and pressing device and a lead fixing device which are connected in turn. The invention also relates to a solar cell electrode machiningmethod. The invention has the advantages that: the resistance wires are directly sintered on the positive side of the cell to form bus bars, have low series resistance, and are densely distributed, the shading area is reduced, the performance is more stable, and the photoelectric conversion efficiency of the solar cell is improved.

The invention relates to a production device of a tunnel lining segment, in particular to a vibration device of a segment mould. The vibration device of the segment mould comprises a vibration table driven by vibration motors, guide rails used for moving of the segment mould are arranged on the vibration table, travelling wheels are correspondingly arranged at the bottom of the segment mould, amounting base is arranged on the lower portion of the vibration table, supporting air bags are arranged between the assembling base and the vibration table, supporting parts used for supporting the segment mould during vibration of the vibration table are arranged on the vibration table, and clamping mechanisms used for fixing the segment mould are arranged on the side of the vibration table. The vibration device of the segment mould has the advantages that production efficiency of the segment can be improved; the vibration quality can be stabilized; control of integration flow production line of the segment is facilitated; the operation is labor and time saving; damage and cracking of the segment mould components in the vibration can be prevented, and noises in tamping and vibrating processes can be reduced.