596 results about "Rough surface" patented technology

The invention belongs to the technical field of image processing, and particularly relates to an ore grinding and screening monitoring method and system based on image particle size analysis, and the method comprises the steps: collecting an ore image, generating a distance transformation diagram, and constructing an extreme value topology network; calculating the relative topology significance of adjacent maximum value points, and constructing a peak-valley independence index in combination with the spatial distance; performing iterative fusion on the maximum value points based on the peak-valley independence index to obtain a final mark set; and performing watershed segmentation by taking the final mark set as a seed, calculating ore particle size cumulative distribution, extracting a characteristic particle size index, and adjusting grinding process parameters according to the characteristic particle size index. Through the combined constraint of the relative topology saliency and the peak valley independence index, the method can adapt to multi-scale features and effectively eliminate the interference of the surface texture of the ore, solves the problem of over-segmentation caused by rough surface in the traditional method, and realizes the real-time optimization, energy conservation and consumption reduction in the grinding process.

The invention belongs to the technical field of gravity dam construction, and provides an assembled concrete cooling pipe structure and method for gravity dam construction. The cooling pipe is composed of a plurality of pipe body units connected in series, and lining pieces are arranged in metal pipes of the pipe body units. The lining piece and the elastic steel sheets form a criss-cross cage type structure through the strip-shaped plates, the strip-shaped plates are provided with pitted surfaces and notches, the steel sheets can stretch out and draw back to achieve variable-diameter adjustment, and water flow can be forced to generate turbulent flow to damage the laminar flow bottom layer. The method comprises the steps of raw material pretreatment, notch and pitted surface machining, lining piece assembling, metal pipe assembling and fixing and pipe body unit series connection. The structure is stable, manufacturing is convenient, boundary layer thermal resistance can be reduced, heat transfer efficiency is improved, concrete temperature cracks are reduced, and the gravity dam construction requirement is met.

The invention relates to the technical field of special cables, in particular to an anti-electromagnetic interference double-shielding signal cable for precise instruments, which comprises conductor units, insulating layers, wire pair shielding layers, a filling buffer layer, a self-adaptive conductive layer, an inner main shielding layer, a bonding layer, an outer main shielding layer and a sheath layer, through combination of the graphene composite conductor and the low-dielectric insulating layer, 10GHz signal attenuation is smaller than or equal to 0.5 dB / m, signal transmission errors are greatly reduced, through cooperation of the 3D braided shielding layer and the filling buffer structure, the bending fatigue life of the signal cable is larger than or equal to 200,000 times, through self-repairing design of the liquid metal microcapsules, the shielding effectiveness of a damaged part is recovered, and the service life of the signal cable is prolonged. Protrusions are arranged on the inner layer, form mechanical occlusion with a microscopic rough surface of a copper foil composite layer on the inner main shielding layer, and are matched with a plurality of pits in the surface of the outer layer to form point-surface composite contact with a 3D woven silver-plated copper wire layer of the outer main shielding layer, so that the peel strength of the inner main shielding layer and the outer main shielding layer is greatly improved.

The invention relates to the technical field of electrolytic copper foil processing, and particularly provides a method for reducing the rough surface roughness of an HVLP copper foil by using a composite additive, which comprises the following steps: step (1): enabling the composite additive to flow into a high-level tank through an additive flow pump, uniformly mixing the composite additive with a copper sulfate electrolyte, and enabling the mixture to flow into a crude foil machine; step (2), then adjusting process parameters of a crude foil machine, including current and line speed of a cathode roller; (3) foil generation and foil drawing are carried out; the composite additive comprises one or two of gelatin and collagen. One or more composite additives composed of gelatin, collagen, sodium dithiodipropane sulfonate, N, N-dimethyl-dithioformamide sodium propanesulfonate, 3-sulfydryl-1-sodium propane sulfonate, hydroxyethyl cellulose and polyethylene glycol are added into the raw foil electrolyte, so that the copper electrodeposition reaction potential can be effectively changed; and uniform and compact copper crystallization peaks are obtained, the rough surface roughness of the raw foil is reduced, and the uniformity of a plating layer is improved.

The invention discloses a gear pair life prediction method based on dynamic stress, belongs to the technical field of reliability design of mechanical transmission systems, and aims to solve the problem of inaccurate life prediction caused by neglecting a dynamic effect and a real surface topography in an existing gear design method. The method comprises the following steps: firstly, acquiring gear pair interface mechanical property parameters considering shafting vibration, dynamic load and surface roughness, wherein the parameters comprise transient oil film pressure, friction coefficient, oil film thickness and shear stress; solving a three-dimensional subsurface stress field by adopting an algorithm and calculating von Mises equivalent stress distribution; stress volume integration is conducted on different rough surfaces, the honed surface is used as the reference, the relative fatigue life of other surfaces is calculated based on the Zaretsky life prediction theory, and accurate prediction and process optimization of the contact fatigue life are achieved; meanwhile, the dynamic bending stress of the tooth root is calculated based on the dynamic normal load, and the bending fatigue safety coefficient is checked.

The invention discloses a machining method for improving the quality of a carrier plate through laser drilling. The machining method comprises the following steps that a first copper foil layer is cleaned, and the surface roughness of the first copper foil layer is detected; a laser drilling machine is adopted to machine a plurality of grooves in the surface of the first copper foil layer; the laser drilling machine performs roughness processing on the surface of the first copper foil layer in an out-of-focus scanning mode to form a rough surface with a convex structure; and the second dielectric layer is laminated with the first copper foil layer subjected to roughness processing. According to the method, laser drilling is directly adopted to carry out groove and roughness processing on the copper foil layer, and after the groove is additionally formed in the surface of the copper foil layer, the groove is filled with the filling material to form a mechanical anchoring point; meanwhile, due to the surface roughness design of the copper foil layer, the filling material can be better attached, the interlayer binding force is enhanced, and layering is avoided; in addition, the groove serves as a part of a heat conduction path, the high heat conductivity of copper can be utilized, heat distribution can be more uniform, heat can be transmitted to surrounding materials more quickly, and heat stress is reduced.

The invention relates to the technical field of copper foil surface treatment, in particular to a copper foil and a preparation method and application thereof. The copper foil comprises an electrolytic copper raw foil, and a roughening treatment layer, a catechol-based polymer layer and a silane coupling agent layer which are sequentially laminated on the rough surface of the electrolytic copper raw foil. According to the copper foil, the catechol-based polymer layer is introduced between the roughening treatment layer and the silane coupling agent layer, the catechol-based polymer layer contains rich functional groups such as hydroxyl and amino, the number of attachment sites of a silane coupling agent on the surface of the copper foil is increased, and then the binding force of the silane coupling agent and the copper foil is increased; meanwhile, rich functional groups can also improve the binding force between the copper foil and various base materials, so that the copper foil has higher peel strength under the condition of keeping lower roughness during application.

The invention discloses a battery piece, a preparation method of the battery piece, a battery string and a photovoltaic module, and belongs to the technical field of photovoltaics. The cutting surface comprises two end parts and a middle part positioned between the two end parts; the surface roughness of the end part is greater than that of the middle part; the end part comprises a first surface and a second surface; the first surface and the second surface are arranged in a step shape; in the thickness direction of the battery piece, the first surface is close to one side of the backlight surface, and the second surface is close to one side of the illuminated surface; the roughness of the first surface is larger than that of the second surface. According to the invention, the two rough surfaces with the height difference are formed at the two end parts of the cutting surface corresponding to the chamfering position, so that more light can be absorbed.

The present invention relates to a metal foil having a rough surface, a carrier-attached metal foil including the metal foil, and a printed circuit board manufactured using the metal foil. The rough surface is naturally formed during formation of the metal foil. The formation of the rough surface allows the metal foil to have a high adhesive strength to an insulating resin substrate and enables the manufacture of a printed circuit board with improved efficiency.

The invention discloses a lithium battery shell defect detection method based on machine vision, relates to the field of general image processing or identification, and adopts different technical routes for different areas of a to-be-detected lithium battery: in the defect detection of a pole column area, on the basis of circular ring segmentation and a texture-distance fusion algorithm, the defect of the pole column area of a top cover is detected; the interference of light reflection and rough surfaces can be effectively inhibited, and pits, scratches and the like on the pole can be accurately captured. In the detection of a shell and a top patch area, the LVAR thought of an image is applied to a point cloud curvature detection method, a dynamic detection threshold is automatically calculated, the problem that the threshold definition is influenced by product deformation is solved, the detection method can adapt to the curved surface deformation of a product, and real defects are effectively separated out.

This invention discloses a method for preparing a fluorine-free superhydrophobic nano-silica cotton fabric, belonging to the field of superhydrophobic textile technology. The invention utilizes trichlorooctadecylsilane (OTS), γ-glycidyl etheroxypropyltrimethoxysilane (KH-560), and hexadecyltrimethoxysilane (HDTMS) to modify silica, obtaining a fluorine-free superhydrophobic coating. This coating, applied to the surface of the cotton fabric, results in a fabric with both low surface energy and a rough surface structure, exhibiting excellent superhydrophobic properties. Furthermore, it also imparts durability, self-cleaning, and stain-resistant capabilities to the hydrophobic coating.

The invention discloses a metal gate device structure manufacturing method and a metal gate device structure. The metal gate device structure manufacturing method comprises the steps of forming a fin part on a substrate; sequentially forming a gate dielectric layer and a cap layer on the surface of the fin part; forming a sacrificial and buffer layer on the surface of the cap layer, then performing heat treatment to enable atoms in the sacrificial and buffer layer material to diffuse into the cap layer material so as to improve the diffusion barrier capability of the cap layer, and then removing the sacrificial and buffer layer; sequentially forming a work function layer and a gate electrode layer on the surface of the cap layer after the sacrificial and buffer layers are removed, wherein the work function layer comprises a plurality of work function material layers which are sequentially stacked from inside to outside; wherein the surfaces of one or more inner-layer work function material layers formed before the outermost work function material layer are subjected to oxidation treatment respectively, so that the rough surfaces of the inner-layer work function material layers are leveled, interface diffusion is inhibited, and the stability of threshold voltage is improved.

A blind repair device for repairing a vane of a blind system has a generally oblong body having a central opening, and a repair structure that can be aligned with a connection aperture of the vane. The repair device can be fit over and secured to the vane to align the repair structure with the connection aperture such that the ability of the vane to couple to a runner / hanger of the blind system is restored. The repair device can be expanded to more easily fit the vane through the central opening. The body of the device can be made of a resilient material, a rigid material, or a combination of resilient and rigid materials. The body can have gripping elements such as nodes, teeth, or a rough surface to secure the repair device to the vane.

The invention provides a method for enabling an optical fiber module interface radiator to be closely attached to an indium heat-conducting sheet. The method comprises the steps that the surface of a nickel-plated layer of the interface radiator is polished to form a rough surface; preliminarily forming an indium heat-conducting sheet on the rough surface; then the workpiece is placed on a jig platform, and a mirror surface roller is arranged on the jig platform; providing a PET (Polyethylene Terephthalate) sheet which is positioned between the surface of the indium heat-conducting sheet and the mirror roller; the method comprises the following steps: pressing an indium heat-conducting sheet into a roller under the roller pressure of 40-110kgf, riveting the bottom of the indium heat-conducting sheet into a rough surface which is tightly combined with the interface radiator, so that a gap and air do not exist on the combined surface, and the top surface of the indium heat-conducting sheet is a flat smooth surface, is attached to the surface of the interface radiator and is tightly combined and molded into an indium heat-conducting thin layer; the surface of the indium heat conduction thin layer is coated with an anti-oxidation coating with the thickness of 1-5 microns; therefore, the indium heat-conducting material can be tightly adhered to the surface of the interface radiator without an adhesive, the interface radiator has excellent drawing resistance and friction resistance, and the influence of thermal resistance caused by air and the adhesive is reduced.

This invention belongs to the field of gas sensor technology and discloses a method for preparing europium ferrite nanosensors and their applications. This method utilizes electrospinning technology combined with a specific low-temperature confined-domain calcination process (550℃~700℃) to prepare EuFeO3 nanotubes with a hollow structure and rough surface by taking advantage of the thermal decomposition kinetics differences of poly(p-v) magnets (PVP). This process effectively suppresses excessive repair of lattice oxygen while forming a unique tubular morphology, effectively "freezing" oxygen vacancies (O2) accounting for up to 34.44% on the material surface in situ. v This invention addresses the shortcomings of traditional solid fiber materials by constructing a sensor using a grinding, dispersion, and coating process. Utilizing the dual reactive surfaces of hollow nanotubes and high-concentration oxygen vacancy active sites, it achieves highly sensitive and selective detection of low-concentration ethylene gas released during fruit ripening. This invention solves the problems of small specific surface area and insufficient active sites in traditional solid fiber materials.

The invention discloses a long-service-life steel shot grading rounding device, and belongs to the technical field of steel shot rounding, the long-service-life steel shot grading rounding device comprises a feeding mechanism used for feeding steel shots and a main body frame body, and the main body frame body is provided with an impact mechanism used for conducting preliminary rounding on the steel shots and a grading mechanism used for conducting grading rounding on the steel shots; a three-stage collaborative rounding process of pre-grinding, impact grinding and fine grinding is set, firstly, a grinding plate which rotates in a steel shot box and is provided with a rough surface and a non-uniform grinding column is used for carrying out primary dispersion and corner angle grinding on steel shots, and primary regularization is achieved; the steel shots are subjected to strong and multi-angle impact grinding and efficient sharp edge removal by utilizing the impact block which rotates at a high speed and is provided with bulges on the surface, and finally, in the grading grinding cylinder, the lower grinding plate performs continuous fine grinding and rolling, so that the surface smoothness is ensured, and the geometric consistency and the surface quality of the steel shots are improved.

The application discloses a container ship valve body casting device with intelligent temperature control function and relates to the technical field of valve body casting devices. The container ship valve body casting device comprises a support, an electric sling, a moving beam, a pouring bag, a pouring table, a sliding frame and a hot-driven double-trip isolation curtain. The first and second limiters are alternately matched, so that the driving head reciprocates between the initial end and the end of the curved groove, and the cooling device is automatically started and stopped according to the pressure sensor signal, thereby realizing double-trip scraping of the isolation bevel and continuous collection of metal particles. The splashed metal liquid forms an oxide film in the air, the rough surface of the isolation bevel is bitten by the oxide film through surface depression, so that the splashed metal liquid can reliably adhere to the isolation bevel, thereby effectively reducing the risk of continuous splashing and diffusion. Part of the metal liquid adhering to the isolation bevel rolls downward along the bevel under the action of gravity and finally enters the collection groove, thereby realizing effective guidance and centralized collection of the splashed metal liquid.

The invention discloses a composite spraying film material for heat dissipation of an air conditioner outdoor unit. The composite spraying film material comprises a first complexing agent and a second complexing agent, according to the air compressor, the first complexing agent and the second complexing agent are cooperatively matched, the first complexing agent can form a rough material layer on the surface of the air compressor to serve as a bottom film layer, the rough surface is composed of countless randomly-distributed tiny concave-convex structures, the effective radiation area is increased through the concave-convex structures, and then the radiation efficiency is effectively improved; furthermore, a surface film layer is formed on the bottom film layer through a second complexing agent, the surface film layer is coated on the concave-convex structures in the bottom film layer, so that the radiation heat dissipation of each concave-convex structure in each direction is further improved, and the surface film layer and the bottom film layer jointly assist the heat dissipation of the surface oxide layer of the air compressor. The heat generated by working of the air compressor can be quickly dissipated, so that the temperature of the air compressor is kept in the optimal working temperature range, and finally, the refrigerating or heating effect can be close to the preset temperature.

The utility model relates to a bathroom wall hanging device which comprises a wall hanging body, two parallel straight plates are arranged at the lower end of the wall hanging body, sliding grooves extending longitudinally are formed in the opposite faces between the straight plates, the depth in the sliding grooves is gradually increased from bottom to top, and a liftable ball is installed between the sliding grooves. The surface of the sphere is an uneven rough surface, and the diameter of the sphere is larger than the distance between the two straight plates. An installation groove is formed in the outer side wall of a straight plate, the width of an outer side groove opening of the installation groove is smaller than the width of the inner side groove bottom, an insertion opening of the installation groove is formed in the bottom end of the straight plate, an insertion piece is inserted into the installation groove in a matched mode, and at least two round holes used for being matched with screws are formed in the insertion piece. Compared with a traditional hook, the wall hanging device has the advantages that the fracture and deformation probability is greatly reduced, the wall hanging device does not need to depend on ultrahigh-toughness materials, the use reliability is guaranteed, meanwhile, the material cost is reduced, the product cost performance is improved, and market application and popularization are facilitated.

This invention proposes a multilayer circuit structure and its fabrication method. The multilayer circuit structure includes a substrate and integrated circuits disposed on both sides of the substrate. Each integrated circuit includes a flexible insulating layer and two flexible conductive layers disposed on both sides of the flexible insulating layer. Each flexible conductive layer has a rough surface and a smooth surface, with each rough surface in contact with the flexible insulating layer. One side of the flexible conductive layer has a rough surface that contacts the flexible insulating layer, significantly increasing the contact area and improving the adhesion between the flexible conductive layer and the flexible insulating layer. This design helps reduce the risk of delamination and peeling, enhances the mechanical stability of the circuit structure, and maintains stable performance, especially when subjected to thermal cycling and mechanical stress during manufacturing. The multilayer circuit structure uses a material with a certain degree of flexibility, enabling it to withstand stress from mechanical operations during manufacturing. The combination of these two factors improves the manufacturing yield of the multilayer circuit structure.

The invention discloses a method for industrially producing a micro-particle conductive aggregate. The method comprises the following steps: pretreating glass beads to obtain a micron-sized rough surface; preparing conductive paste containing large-particle graphene and water-based acrylic resin; at least three continuous spraying fluidized beds which are connected in series are adopted, and the surfaces of the microbeads are coated with bonding layers, conductive layers and protective layers in sequence; and finally, continuous curing and screening are carried out. According to the method, efficient, continuous and large-scale production of the conductive aggregate is achieved, and the problems that graphene is prone to agglomeration and uneven in dispersion and the coating binding force of a traditional process is poor are effectively solved. The obtained conductive aggregate is excellent in conductivity, good in solvent resistance, high in adhesive force and suitable for the fields of anti-static mortar, resin self-leveling materials, coatings and the like.

To provide a dynamic pressure bearing excellent in bearing rigidity at low cost.SOLUTION: A dynamic pressure generating part P is provided on each of two radial bearings A1, A2 provided at an interval in the axial direction, and a large diameter cylindrical surface 8b having a diameter larger than that of the radial bearings A1, A2 is provided between the radial bearings LA, LA. In the dynamic pressure bearing (bearing member 8) in which the dynamic pressure generating portion P is formed of a concavo-convex surface in which a plurality of dynamic pressure grooves 10 extending in the axial direction and convex hill portions 11 are alternately arranged in the circumferential direction, one radial bearing surface A1 and the large-diameter cylindrical surface 8b are connected via a tapered surface 8c inclined with respect to the axial direction, and the other radial bearing surface A2 and the large-diameter cylindrical surface 8b are connected via a tapered surface 8d having an inclination angle with respect to the axial direction smaller than that of the tapered surface 8b. The dynamic pressure grooves 10 formed in the A2 of the other radial surface are open to the 8d of the tapered surface.SELECTED DRAWING: Figure 4

The utility model relates to the field of sucker type hooks, in particular to a sucker mechanism and a hook for engineering construction, which comprises a base component, the base component comprises a base, and one side of the base is provided with a main connecting rod; the adsorption assembly comprises a first suction cup arranged on the side, away from the main connecting rod, of the base, a fixing plate is coaxially arranged in the first suction cup, a plurality of first vent holes are formed in the fixing plate, a plurality of second suction cups are further arranged on the fixing plate, and the opening directions of the first suction cup and the second suction cups are consistent; due to the fact that independent adsorption structures which are not communicated with one another are arranged between the first suction cup and the second suction cups and between the second suction cups, the first suction cup and the second suction cups can independently play a role to be adsorbed to the surface of concrete. And the overall adsorption of the second sucker group is not influenced by the falling of the first sucker or the individual second sucker caused by the local concave-convex rough surface and the slight inclined surface of the concrete, so that the whole sucker mechanism can adapt to most common concrete surfaces.

The invention discloses a SiC wafer surface oxidation behavior simulation method, system and device, and relates to the technical field of molecular dynamics simulation, and the method comprises the following steps: initializing a plurality of roughness related parameters in MATLAB, and setting simulation box sizes of a Si surface initial model and a C surface initial model; reading atomic positions in the Si surface initial model and the C surface initial model; circulation is carried out on different roughness related parameters, and a corresponding rough surface is generated in each circulation; cutting atomic positions based on different rough surfaces to obtain a plurality of Si surface roughness models and C surface roughness models, and inputting the Si surface roughness models and the C surface roughness models to LAMMPS; and performing OH deposition on the Si surface roughness models and the C surface roughness models in the LAMMPS, and simulating the surface oxidation process. According to the method, by introducing the random roughness, the rough morphology of the SiC surface is accurately simulated, and the authenticity and practicability of research are remarkably improved.

The utility model relates to the technical field of protective films, and particularly discloses a protective film structure for cigarette holder packaging, which comprises a protective film body, one side of the protective film body is fixedly connected with a first sealing edge, the other side of the protective film body is fixedly connected with a second sealing edge, and a first rough part is arranged in the middle of the surface of the second sealing edge. A plurality of second rough parts are arranged on the surface of the first sealing edge, the second rough parts are evenly distributed at equal intervals, the distance between the second rough part located in the middle of the first sealing edge and the second rough parts on the two sides is 2 mm, the common length of the protective film body and the first sealing edge is 22 mm, and the lengths of the first sealing edge and the second sealing edges are both 10 mm. According to the utility model, the condition that a rough surface is in contact with a smooth surface is avoided when the whole protective film covers the cigarette filter tip and the circumference of the filter tip is at any numerical value of 22-24mm, so that the inevitability of frictional contact is ensured, and the firmness of adhesion of the protective film is further ensured.

The utility model discloses a grinding device for a micro-nano calcium powder material, which comprises a bottom plate, a plurality of grinding wheels and a plurality of grinding wheels, one side of the grinding assembly is fixedly connected with the top of the bottom plate through a supporting frame, and the grinding assembly is used for grinding a micro-nano calcium powder material; and one side of the screening assembly is fixedly connected with the top of the bottom plate, and the screening assembly is used for screening and grading the micro-nano calcium powder. According to the grinding device for the micro-nano calcium powder material, the grinding assembly is arranged, a driving motor is adopted to drive a grinding wheel to grind calcium powder, the grinding wheel is a large disc wheel, the rough surface of the grinding wheel is matched with the huge size of the grinding wheel, and the whole side face of the grinding wheel can be promoted to sufficiently grind the calcium powder; and the feeding plate and the discharging plate are both matched with the surface of the circular groove shell, and it is guaranteed that the calcium powder can be ground into micro-nano-scale powder.

Method for producing a workpiece (64) made of quartz glass, which has at least one melt-polished workpiece surface (113) for use in a plasma-assisted manufacturing process, comprising the process steps: a) Providing a workpiece (64) made of quartz glass which has at least one raw surface (111) produced by cutting or machining, and b) Polishing the raw surface (111) to the polished workpiece surface (113) by laser polishing using at least one laser beam (81) moving relative to the raw surface (111), wherein the relative movement is generated by superimposing a translational-oscillating movement and a feed movement, wherein, as a result of the translational-oscillating movement, a quasi-line (87) is generated by a relative velocity between the raw surface (111) and the laser beam (81) above 500 mm / s, and wherein the feed movement has a relative velocity between the raw surface (111) and the laser beam (81) between 1 mm / s and 50 mm / s, c) and wherein a polished workpiece surface (113) is produced which has a micro-roughness and waviness, wherein the white light interferometry at a spatial wavelength λ OMicroroughness measured in the range of 1 µm to 10 µm has a surface roughness Sa of less than 0.5 nm, characterized in that the measurement is taken by means of a white light interferometer at a spatial wavelength in the range λ O Surface roughness (waviness) measured from 100 µm to 1000 µm has a value Sa of more than 5 nm, where the quasi-line (87) has a radiation intensity within the quasi-line (87) on the workpiece (64) between 10 W / cm² 2 and 1000 W / cm² 2 is produced wherein, for laser polishing of an annular end face (80) of a hollow cylindrical workpiece (64), the feed movement comprises rotation of the end face (80) about the longitudinal axis (84), and the translational-oscillating movement comprises a reversing movement of the laser beam (81) between an inner workpiece surface (85) and an outer workpiece surface (86), and wherein the speed of the translational-oscillating movement is set higher in the region of the inner surface (85) than in the region of the outer surface (86).

The invention relates to the technical field of building construction, and provides an existing building column structure reinforcing construction method which comprises the steps that a rough surface is manufactured on a concrete bonding surface of an original concrete column structure layer; positioning and determining a steel bar planting hole site on the original concrete column structure, drilling, and then cleaning and checking the hole; chemical steel bar planting glue is poured into the holes, and the chemical steel bar planting glue comprises vertical steel bar planting and horizontal steel bar planting; binding and fixing the main reinforcements subjected to vertical bar planting through stirrups; a formwork is reinforced after main reinforcements are bound and fixed, then a hole is formed in a building floor on the top of an original concrete column structure, back-jacking is conducted on the bottom of the holed part of the building floor through a supporting structure, concrete is poured to increase the size of the original concrete column structure after back-jacking is completed, then formwork removal and maintenance are conducted, and reinforcement of the original concrete column structure is completed. The technical problems that cooperative work efficiency of new and old materials is insufficient, a weak layer is easily formed at the junction, reinforcement construction is uncontrollable and the like can be solved, and on-site construction safety and construction quality can be guaranteed.

The application discloses a tail fiber VCSEL laser assembly packaging structure and method for reducing analog signal noise. The packaging structure is improved. The glass capillary is used to fix the optical fiber. The grinding angle of the end face of the optical fiber is not less than 11 degrees. A layer of anti-reflection film is coated on the grinding end face of the optical fiber and the grinding end face of the glass capillary, so that the reflected light of the grinding end face is reduced. The inner surface of the metal sleeve is roughened. Most of the light energy of the incident light cone emitted by the laser chip enters the optical fiber and the glass capillary through the grinding end face. A small part of the reflected light energy can only be kept in the reflected light cone and reflected to the outside of the coupling lens at a large reflection angle. The rough surface of the inner surface of the metal sleeve diffusely reflects the reflected light, greatly reduces the light signal jitter generated by the reflected light entering the laser chip, and the light signal jitter is less than 0.001. The packaging method is convenient for production. The grinding and coating errors can be greatly reduced during efficient batch production, and the quality control is facilitated.

The application discloses a multi-view human body reconstruction method based on photometric consistency matching and optimization algorithm, which comprises the following steps: firstly, obtaining a rough human body surface through a visual hull algorithm according to a human body mask image; secondly, using photometric consistency constraint to optimize the shape initialized from the visual hull, so as to obtain a dense human body surface model; thirdly, calculating an illumination coefficient by using the diffuse reflection principle; and finally, using a light and shade optimization algorithm to perform high-speed real-time rendering on the dense human body surface model, so as to obtain a final simulation human body model. The application can optimize the initialized rough surface by using the contrast of the gray scale image, maintaining the photometric consistency constraint and the differentiable rendering, and can effectively solve the problems of the unsmooth surface, the unobvious geometric details and the color estimation by using the diffuse reflection principle to estimate the diffuse reflectivity and the illumination. The application can optimize the human body surface by the difference of the light and shade and the color in the image.