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180results about How to "Realize splicing" patented technology

Automatic welding system and method for angle steel tower base

The invention relates to the technical field of angle steel tower welding, in particular to an angle steel tower base automatic welding system and method.The angle steel tower base automatic welding system comprises a base and a storage table and further comprises a controller, a welding mechanism, a splicing mechanism and a limiting mechanism; the splicing mechanism comprises a driving assembly, four pushing assemblies and eight electric clamping jaws, the limiting mechanism comprises a tightening block, an abutting assembly and a lifting assembly, an L-shaped rod is fixedly arranged at the top of the workbench, and the tightening block is fixedly arranged at the bottom of the lifting assembly. Through multi-directional abutting limiting, the shapes and the relative positions of the bottom plate and the four rib plates can be effectively controlled, internal stress generated by heating in the welding process of the four rib plates and the bottom plate is balanced, welding deformation is prevented, and then the welding effect is improved.
Owner:SHANDONG HUAAN TOWER CO LTD

Welding device for chemical container barrel assembly production

The invention discloses a welding device for chemical container barrel assembly production, and belongs to the technical field of welding equipment.The welding device comprises a welding box, an inner welding mechanism, an outer welding mechanism and two sets of positioning mechanisms are arranged in the welding box, and the two sets of positioning mechanisms are arranged on the two sides of the outer welding mechanism; the outer welding mechanism comprises a welding frame and an arc-shaped seat, a round hole is formed in the welding frame, and the arc-shaped seat is slidably connected into the round hole; the inner welding mechanism comprises a fixed frame, a movable frame and a mounting disc. The other side of the mounting disc and one side of the arc-shaped base are both connected with welding assemblies. The welding assembly comprises a fixing plate, a mounting plate and a welding gun. Automatic and synchronous welding work of the inner ring and the outer ring of the barrel can be achieved through the inner welding mechanism and the outer welding mechanism, the power and the cooling rate of the welding gun can be automatically adjusted through the linkage mechanism and the adjusting mechanism according to the moving line of the welding gun relative to a workpiece, and uniform and efficient welding work is guaranteed.
Owner:无锡华立聚能装备股份有限公司

Wind power blade infrared image panoramic splicing method and device, storage medium and product

ActiveCN119540045ARealize splicingSolve the problem of difficult splicingImage enhancementImage analysisImage pairWind power
The invention discloses a wind power blade infrared image panoramic splicing method and device, a storage medium and a product. The splicing method comprises the following steps: performing coarse registration on each frame of visible light image and infrared image; respectively removing backgrounds of the visible light image and the infrared image after coarse registration to obtain a visible light foreground mask image, an infrared foreground mask image, and a blade visible light image and a blade infrared image after the backgrounds are removed; performing fine registration on the visible light foreground mask image and the infrared foreground mask image to obtain relative displacement; splicing the multiple frames of leaf visible light images to obtain a pixel increment; according to the relative displacement and the pixel increment, calculating the pixel increment when the two adjacent leaf infrared images are spliced; and splicing the corresponding two adjacent frames of blade infrared images according to the pixel increment when the two adjacent frames of blade infrared images are spliced, so as to obtain a wind power blade infrared panoramic image. According to the invention, the splicing of the infrared thermal images of the wind power blade is realized.
Owner:HUNAN UNIV

Fine-grained vulnerability propagation detection method and system for Maven ecology

The invention discloses a fine-grained vulnerability propagation detection method and system for Maven ecology. According to the method, a novel data structure name is a flattened function call graph to store the function call relation of each software package, a package dependency chain related to vulnerability propagation is recognized according to a dependency relation graph of the software package to be analyzed, and the flattened function call graphs are generated for each software package on the chain and then spliced. And then, on the basis of a special structure of the flattened function call graph, a quick vulnerability function call path search method is provided, quick function call path search is realized by firstly performing quick reachability judgment and then recovering a complete function call path in a single packet, so that vulnerability propagation is analyzed on function granularity. According to the method, rapid and large-scale vulnerability propagation analysis in Maven ecology is realized, the method can be used for user project vulnerability risk judgment and can also be used for large-scale analysis and research on the ecological level, and the practicability is high.
Owner:INSTITUTE OF COMPUTING INNOVATION ZHEJIANG UNIVERSITY

Fan blade image splicing method, device and system

The invention discloses a fan blade image splicing method, device and system, and belongs to the field of image splicing. The inspection images are shot at different positions at the same height and at the same distance from the fan, so that the width of the same part of the target blade in different inspection images is unchanged, and a characteristic curve related to the width change of the target blade is obtained based on the width; and then determining the transverse offset and the longitudinal offset of the adjacent images according to the characteristic curve, and finally moving the inspection image according to the transverse offset and the longitudinal offset to obtain a spliced image. According to the scheme, the image splicing can be realized without extracting the features of the target blade, the operation is simple, and the splicing success rate and precision are high.
Owner:BEIJING DEEPERCEPTION TECHNOLOGY CO LTD

Cable quick splicing device and cable

The present invention relates to the field of cable technology, and in particular to a cable quick splicing device and a cable, a connector, wherein the connector is provided with an insulating outer shell layer, a shielding shell layer and a conductive inner shell layer, the insulating outer shell layer is provided with a first connecting tube and a second connecting tube, cable A is plugged into the first connecting tube, and cable B is plugged into the second connecting tube; the first connecting tube and the second connecting tube are both provided with a crimping portion, the shielding shell layer is provided with a shielding layer conductor, and the conductive inner shell layer is provided with a core conductor. The present invention achieves splicing of cable A and cable B by crimping the sheaths of cable A and cable B with the crimping portion, connecting the metal shielding layers of cable A and cable B with the shielding layer conductor, and connecting the conductive cores of cable A and cable B with the core conductor, and wrapping the connector at the connection between cable A and cable B, and the metal shielding layers of cable A and cable B are connected, so that it is not necessary to spend a long time to restore the insulation layer at the connection between the two cables of cable A and cable B.
Owner:GUANGDONG BAOMING IND TECH CO LTD

Drain board with high pressure resistance

The utility model belongs to the technical field of drainage plates, and particularly relates to a high-pressure-resistance drainage plate which comprises a drainage plate body, a plurality of protruding blocks are evenly arranged on the upper surface of the drainage plate body, a plurality of reinforcing ribs are distributed on the side walls of the protruding blocks in the circumferential direction, and a bearing assembly and a pressing assembly are arranged on the left side and the right side of the drainage plate body. And the bearing assembly is matched with the pressing assembly. The problem that adjacent drainage plates are prone to being separated in the actual construction process is solved, and inconvenience brought to subsequent further construction of the drainage plates is avoided.
Owner:龙游华翊建筑材料有限公司

Neodymium-iron-boron magnet combination capable of being positioned and spliced

The utility model relates to a neodymium-iron-boron magnet combination capable of being positioned and spliced, which belongs to the technical field of neodymium-iron-boron magnets and comprises a main magnet and a spliced magnet, the main magnet comprises a bottom and a cylindrical portion, a through hole matched with the cylindrical portion is formed in the middle of the spliced magnet, a butt joint groove is formed in the lower end of the spliced magnet, and the bottom of the spliced magnet is provided with a through hole matched with the cylindrical portion. A butt joint column matched with the butt joint groove is arranged at the upper end of the bottom. The method has the advantages of being not prone to dislocation in splicing and high in splicing precision.
Owner:SHANGHAI AMPERE MAGNETICS CO LTD

Layout layout and automatic splicing method capable of configuring LDO (Low Dropout Regulator) module

The invention relates to the technical field of linear voltage regulators, and discloses a layout layout and automatic splicing method capable of configuring LDO modules, which comprises the following steps: S1, planning Floorplan, drawing each analog module leafcell to obtain an analog module layout, reserving an interface to a boundary boundary, defining a boundary boundary layer for program identification, and meanwhile, establishing a layout layout and an automatic splicing method of a configurable LDO module, the layout layout and the automatic splicing method of the configurable LDO module, the layout layout and the automatic splicing method of the configurable LDO module, the layout layout and the automatic splicing method of the configurable LDO module; controlling the position of a pin through a layout wiring tool, and operating to obtain a digital module layout; s2, compiling a splicing code, calculating each parameter of each LDO module through a fitting function, splicing the analog module layout and the digital module layout, and respectively obtaining an analog part layout and a digital part layout; and S3, checking the spliced digital part layout and the spliced analog part layout in sequence, and carrying out design rule checking (DRC) and layout schematic diagram consistency checking (LVS) after the digital part layout and the analog part layout pass the checking. A stable, rapid and multi-configuration effect is achieved by performing customized drawing on a simulation layout and performing configurable splicing on the simulation layout and a digital layout generated by depending on an automatic layout and wiring tool.
Owner:PRIMARIUS TECH CO LTD

Correcting and splicing method for EBSD data

The invention provides a correction and splicing method for EBSD data, and relates to the technical field of EBSD data processing. The method comprises the following steps: firstly, converting EBSD data into an orientation imaging image, splicing and correcting the orientation imaging image to obtain a standard image and a to-be-corrected image, matching, aligning and screening effective feature data points of the standard image and the to-be-corrected image; calculating a target transformation matrix for correcting distorted pixel points in the image to be corrected to standard positions through the effective feature data points, and performing same matrix transformation on recognizable data points in each orientation imaging image in the orientation imaging image data set to obtain corrected data points; the method comprises the following steps: correcting data points of the EBSD data, standardizing the format of the corrected data points to obtain corrected and standardized EBSD data, splicing all the EBSD data, determining whether splicing positions are completely spliced or not, if splicing marks exist, re-matching the feature data points, and repeating the process until the splicing data have no splicing marks.
Owner:NORTHEASTERN UNIV CHINA

Double-layer large-span truss integrated small unit assembling mechanism and method

The invention relates to the technical field of truss positioning devices, in particular to a double-layer large-span truss integrated small unit assembling mechanism and method. Comprising vertical frames, sliding rails are arranged on the two sides and the middle of each vertical frame, and the multiple vertical frames are spliced end to end to form a supporting jig frame; the guide assemblies are arranged on the sliding rails on the two sides of the vertical frame in pairs, and the two guide assemblies can form a V-shaped limiting channel and are used for guiding the truss to be aligned; the supporting assemblies are arranged on the sliding rails in the middle of the vertical frame in pairs, and locking pieces in butt joint with the guiding assemblies are arranged below the supporting assemblies; through cooperation of the supporting assembly and the guiding assembly, in the hoisting and falling process of the truss, the truss is rapidly guided to reach the designated position through guiding correction, the alignment time is effectively shortened, and the construction difficulty is reduced.
Owner:SINOHYDRO ENG BUREAU 4

Leighting data dynamic fusion method and device, Leighting all-in-one machine and storage medium

The invention provides a dynamic fusion method and device for thundersight data, a thundersight all-in-one machine and a storage medium. The system comprises a visual device and at least one group of detection radars, and each group of detection radars comprises a main radar and a blind compensation radar. The method comprises the following steps: determining a coordinate transformation matrix of each main radar based on pose change information of the main radar; based on the coordinate transformation matrix of each main radar, transforming the coordinates of the point cloud data collected by the main radar to a radar coordinate system where the blind compensation radar corresponding to the main radar is located, and obtaining the point cloud data after coordinate transformation; for each group of detection radars, clustering the point cloud data after coordinate transformation and the point cloud data collected by the blind compensation radar to obtain radar target information of the group of detection radars; and performing thunder-view data fusion on the radar target information of each group of detection radars and the visual target information collected by the visual equipment so as to perform target tracking. According to the invention, the fusion result of the thunder view data has better accuracy.
Owner:HEBEI DEGUROON ELECTRONIC TECH CO LTD

Novel mortise and tenon bed frame structure

The utility model discloses a novel mortise and tenon bed frame structure, which belongs to the technical field of bed frame installation, and comprises four support blocks and two middle blocks, the support blocks and the middle blocks are provided with splicing grooves, vertical rods are lapped in the splicing grooves, a same first cross rod is lapped in the two support blocks, and a second cross rod is lapped in the two middle blocks. And the same second cross rod is lapped in the two middle blocks. According to the novel mortise and tenon bed frame structure, through the arrangement of the supporting blocks, the middle blocks, the connecting rods, the first transverse rods, the second transverse rods and the vertical rods, under the mutual cooperation of the supporting blocks, the middle blocks, the connecting rods, the first transverse rods, the second transverse rods and the vertical rods, the situation that the wood bed frame is easily damaged in the multiple bolt mounting and dismounting processes is further avoided; meanwhile, the clamping grooves, the splicing grooves, the square tenon grooves and the square tenon blocks are spliced and assembled together, so that the bed frame can be quickly assembled and disassembled, the service life of the wood bed frame is guaranteed, and the overall applicability is greatly improved.
Owner:LUWEI IMPORT & EXPORT (TIANJIN) CO LTD

Flow-adjustable low-speed short screw drill

The invention discloses a flow-adjustable low-speed short screw drill, relates to the technical field of screw drills, and aims to solve the problem that threaded connection is more easily affected by looseness or fatigue due to the fact that threaded connection is realized through threads and pre-tightening force. In order to solve the problems that in the well drilling process, a screw drill needs to bear the action of alternating stress such as torque, stretching, compression, bending and impact, and therefore threaded connection can not meet the requirement for high strength, a discharging assembly is arranged on one side of a bypass valve assembly, a motor assembly is arranged on one side of the discharging assembly, and the motor assembly is arranged on the other side of the discharging assembly. A transmission shaft assembly is arranged on one side of the motor assembly, connecting locking mechanisms are arranged at the outer ends of the connecting positions of the bypass valve assembly and the discharging assembly, the discharging assembly and the motor assembly and the motor assembly and the transmission shaft assembly, and a rotor is arranged in the motor assembly. Rotor through grooves are formed in the anti-falling connecting rod, the anti-falling nut and the rotor.
Owner:YANCHENG XINYONGJIA PETROLEUM MACHINERY MFG

Storage shelf convenient to disassemble and assemble

The storage goods shelf convenient to disassemble and assemble comprises a plurality of goods shelf units, and each goods shelf unit comprises stand columns on the two sides and a detachable goods shelf plate installed between the stand columns on the two sides; mounting grooves which are uniformly distributed from top to bottom are further formed in the positions of the inner side walls of the stand columns, downward pressing springs are correspondingly arranged in the mounting grooves, and triangular pressing blocks are mounted at the lower ends of the downward pressing springs; and inclined pressing edges are correspondingly arranged at the two side ends of the goods shelf plate. According to the device, the goods shelf plates on the single goods shelf unit can be disassembled and assembled, the goods shelf plates are pressed and fixed through cooperation of the inclined pressing edges and the triangular pressing blocks, and disassembly is convenient; according to the goods shelf, splicing and mounting of a plurality of goods shelf units can be achieved, during splicing, splicing and mounting are achieved through cooperation of the splicing grooves and the clamping block units, splicing of the stand columns in the left-right direction is achieved, splicing is very convenient, and the structure is reasonable.
Owner:SUQIAN KING GREEN FOOD CO LTD

Assembling machine and assembly process of rail transit station substructure

The present invention provides an assembling machine and an assembling process for the substructure of a rail transit station, and relates to the technical field of rail transit station construction equipment. The assembling machine includes a frame, a driving device, a lifting device and a splicing device; the frame includes a machine arm, a front leg, a middle leg, a rear leg, a first telescopic member and at least one second telescopic member, the front leg, the middle leg and the rear leg are respectively connected to the machine arm and support the machine arm, the first telescopic member is suitable for driving the front leg to be telescopic, and the second telescopic member is suitable for driving the middle leg and / or the rear leg to be telescopic; the driving device is arranged on the middle leg and / or the rear leg and is suitable for driving the frame to move; the lifting device and the splicing device are respectively connected to the machine arm in a sliding manner, the lifting device is suitable for lifting prefabricated components, and the splicing device is suitable for splicing prefabricated components. In the present invention, the prefabricated components of the last few rings can be assembled without spending a lot of time and manually disassembling or moving the assembling machine, which can improve the assembly efficiency of the substructure of the rail transit station.
Owner:CHINA RAILWAY ENG MASCH RES & DESIGN INST CO LTD

Energy storage type shore power pile temperature and humidity control equipment

The utility model discloses an energy storage type shore power pile temperature and humidity control device which comprises a horizontal plate, a temperature and humidity sensor is detachably arranged on the top of the horizontal plate, and a fastening plate is arranged on the rear surface of the temperature and humidity sensor. A limiting groove is formed in the top of the horizontal plate, an inserting block inserted into the limiting groove is arranged at the bottom of the temperature and humidity sensor, and stabilizing components are arranged on the inserting block and the horizontal plate; the stabilizing component comprises a clamping groove and a clamping block, the clamping groove is formed in the side surface of the inserting block, and a containing groove is formed in the horizontal plate. According to the utility model, when the humiture sensor needs to be disassembled and maintained, the humiture sensor can be quickly disassembled by pulling up, thereby improving the maintenance efficiency of the humiture sensor and improving the user experience.
Owner:SHANDONG ZHONT SUNNY ELECTRICAL SCI

Electronic science and education splicing assembly for teenagers

The utility model belongs to the field of electronic science and education equipment for teenagers, and discloses an electronic science and education splicing assembly for teenagers, which comprises an electronic element block and a circuit board, a male buckle is arranged on one side of the electronic element block, and a female buckle is arranged on the other side of the electronic element block. The electronic component block and the circuit board are electrically connected and structurally connected through a female header and pin header connector, and the female header and pin header connector comprises a female header and a pin header used for being connected with the female header in an inserted mode. According to the utility model, each electronic component is integrated on the circuit board, the circuit board is provided with the pin header, and the circuit board is connected with the female header on the electronic component block through the pin header, so that circuit splicing is realized, teenagers can carry out electronic manufacturing, and the circuit board can be detached from the electronic component block, so that the electronic component block has universality, and waste is avoided.
Owner:HANGZHOU ZHIZHI SCI & EDUCATION SUPPLIES CO LTD

Point cloud map generation method, device, computer equipment and storage medium

The present disclosure provides a method, device, computer equipment and storage medium for generating a point cloud map, the method comprising: obtaining point cloud maps corresponding to multiple areas of a target scene; wherein the positions indicated by some point cloud points in at least some areas of the multiple areas are the same as the positions indicated by some point cloud points in at least one other area; using the three-dimensional position information of the point cloud points indicating the same position in different areas respectively in different areas, the point cloud maps corresponding to the multiple areas are converted to a target coordinate system; based on the multiple point cloud maps converted to the target coordinate system, a target point cloud map is obtained. The embodiment of the present disclosure uses the three-dimensional position information of the point cloud points indicating the same position in different areas respectively in different areas to determine the relative position relationship between the point cloud maps of different areas, and realizes the splicing of different point cloud maps, which has higher accuracy and generation efficiency than the manual splicing method.
Owner:SHENZHEN TETRAS AI TECH CO LTD

Vehicle track splicing method for long road section cross-camera target association matching

The invention provides a vehicle track splicing method for long road section cross-camera target association matching. The method comprises the following steps: acquiring an image including a target vehicle, and constructing a training image data set and a verification image data set; capturing a single-camera vehicle track by using a YOLOV5 model and a Kalman filtering algorithm; and splicing the cross-camera vehicle tracks by using a vehicle re-recognition algorithm. According to the invention, vehicle positioning and track splicing can be realized more accurately, and support is provided for vehicle motion mode analysis, traffic flow monitoring and abnormal behavior detection; a target vehicle can be quickly and accurately identified through a YOLOV5 model and a Kalman filtering algorithm, and target tracking is carried out on the vehicle; through coordinate conversion, the difference of visual angles is eliminated through a unified spatial reference system, and the error or inconsistency of image features is avoided, so that the positioning and the track of the vehicle can be more accurately spliced; and the vehicle is re-identified through a vehicle re-identification algorithm, so that the identification accuracy is ensured.
Owner:SUN YAT SEN UNIV

A distributed video stitching device

A kind of distributed video splicing device, it is related to video splicing technical field, including with several local input modules of external image device connection, with the management module of several local input modules connection, with the output module of management module connection, with the network streaming media input module of management module connection, output module is connected with external display device, local input module includes with the input interface of external image device connection, with the input conversion chip of input interface electrical connection, with the input FPGA of input conversion chip electrical connection, input FPGA is electrically connected with management module, input conversion chip is used to output RGB signal to input FPGA.The technical scheme provided by the utility model aims to realize integrated design, and can solve the technical problem of network streaming media data processing.
Owner:ZHONGLI INTELLIGENT TECH (SHENZHEN) CO LTD

Tourist attraction fence

The utility model discloses a tourist attraction fence, which relates to the technical field of protective fences, and comprises a main body fence which comprises a bottom plate and a plurality of first sleeves; the adjusting fence comprises a fixed plate and a plurality of movable rods; the adjusting mechanism is used for adjusting the distance between the fixing plate and the bottom plate, the adjusting mechanism comprises an adjusting rod and a second sleeve, and the adjusting rod is movably inserted into the second sleeve; the fixing assembly is used for fixing the adjusting rod and the second sleeve; according to the fence splicing device, the first adjusting mechanism and the second adjusting mechanism are arranged, the positions of the first splicing sleeve and the second splicing sleeve can be adjusted through the first adjusting mechanism and the second adjusting mechanism respectively, and therefore when fences at different height positions are spliced, the positions of the first splicing sleeve and the second splicing sleeve can be adjusted; fence splicing is achieved, and construction efficiency is improved.
Owner:何玲

Truss for prefabricated cabin and prefabricated cabin

The truss for the prefabricated cabin is connected to a box body of the prefabricated cabin, and an upper supporting part extends in the horizontal direction; the lower supporting part is arranged below the upper supporting part in an extending mode in the direction parallel to the upper supporting part. The two ends of the vertical supporting part are connected with the upper supporting part and the lower supporting part respectively; the multiple vertical supporting parts are arranged at intervals in the length direction of the upper supporting part and the length direction of the lower supporting part. The plurality of corrugated connecting parts extend along an area formed between the upper supporting part and the lower supporting part and are connected with two adjacent straight supporting parts; the plurality of splicing connecting parts are arranged at intervals along the upper supporting part or the lower supporting part, and the splicing connecting parts are used for connecting two adjacent prefabricated cabin box bodies. The utility model aims to provide the truss for the prefabricated cabin and the prefabricated cabin so as to solve the problem that the bending strength of the truss for the prefabricated cabin cannot be guaranteed under the conditions of low weight and low cost when the width of a box body of the prefabricated cabin is large in the prior art.
Owner:QINGDAO TGOOD ELECTRIC +1

A kind of steel structure building heat insulation wall panel

The utility model relates to the technical field of steel structure building, and disclose a kind of heat preservation and thermal insulation wall panel for steel structure building, including board body, the board body has the outer plate face and inner plate face of opposite, and the outer wall of outer plate face is provided with baffle assembly, the side of board body is provided with connecting assembly;The baffle assembly includes locating rod, and the outer wall of locating rod is slidably connected with locating block, and the inner wall of locating block is provided with locating hole.This heat preservation and thermal insulation wall panel for steel structure building when installing fixed baffle, locating block is sleeved on locating rod through locating hole, is fixed using nut, can ensure that fixed baffle is stably installed, fixed baffle will two spliced board body fixed, strengthen the strength of connection, simultaneously with the help of the installation pressure of fixed baffle, can let first sealing washer tightly adhere outer plate face, form reliable seal to board body outside splicing position, effectively block outside cold air from outside gap infiltration, improve the comfort of indoor environment.
Owner:WUXI GUANGXIAN STEEL STRUCTURE ENG CO LTD

Splicing contracted pipe for main beam of photovoltaic tracking system

The utility model relates to the technical field of photovoltaic tracking systems, in particular to a photovoltaic tracking system girder splicing contracted pipe, which comprises an inserting part and a bearing part, the inserting part comprises a first pipe body, and a plurality of first mounting holes distributed at equal intervals are formed in one side of the first pipe body; the bearing part comprises a second pipe body, a connection pipe body and a contraction pipe body which are connected in sequence, the pipe diameter of the second pipe body is the same as that of the first pipe body, the outer diameter of the connection pipe body is gradually reduced from the end connected with the second pipe body to the end connected with the contraction pipe body, and the pipe diameter of the contraction pipe body is smaller than that of the first pipe body; a plurality of second mounting holes which are distributed at equal intervals are formed in one side of the shrinkage pipe body, and the shrinkage pipe body is inserted into the side, close to the first mounting holes, in the first pipe body; and riveting assemblies for riveting the first pipe body and the retractable pipe body are arranged in the second mounting holes and the corresponding first mounting holes. By optimizing the pipe shrinkage process, efficient, environment-friendly and economical pipe body connection is achieved when the main beams are spliced.
Owner:POWERWAY RENEWABLE ENERGY

Silicon hydrogenation catalyst as well as preparation method and application thereof

PendingCN119140151AGuaranteed activitySuitable pore structureMolecular sieve catalystsOrganic compound preparationIsononyl alcoholMolecular sieve
The invention provides a silicon hydrogenation catalyst as well as a preparation method and application thereof, and relates to the field of catalysts. The catalyst comprises, by mass, 15-30% of an active component and 70-85% of a catalyst carrier, and the catalyst carrier is SiO2 (at) molecular sieve microspheres having a core-shell structure; the preparation method comprises the following steps: preparing a catalyst carrier, performing alkali etching on silochrom, adding inorganic aluminum salt and an organic ammonium template agent, uniformly mixing, performing hydrothermal crystallization treatment in a reaction kettle, and performing post-treatment on a product to obtain the catalyst carrier; and impregnating the active component on the carrier to obtain the catalyst. The prepared catalyst is applied to a reaction for preparing isononyl alcohol through isononyl aldehyde hydrogenation, the conversion rate of isononyl aldehyde reaches 99% or above, the selectivity of isononyl alcohol reaches 99% or above, and the catalyst has excellent activity, selectivity and stability and is beneficial to industrial application and popularization.
Owner:CHINA PETROLEUM & CHEMICAL CORP +2

Audio and video equipment and corresponding multi-equipment data transmission method

The embodiment of the invention relates to the technical field of communication, and discloses an audio and video device and a corresponding multi-device data transmission method, comprising the following steps: a master device acquires a video stream from at least one slave device so as to acquire a multi-channel video stream formed by the video stream of the master device and the video stream of the at least one slave device; splicing the multiple paths of video streams to obtain a spliced video stream; the master device obtains the audio stream from the at least one slave device so as to obtain at least one audio stream formed by the audio stream of the master device and / or the audio stream of the at least one slave device; and adding at least one audio stream to the spliced video stream to obtain a synthetic video stream to be displayed. Through establishing a joint cooperative transmission channel among a plurality of audio and video devices, the fast sharing of audio data and video data is realized, and the efficiency and quality of conference communication are greatly improved.
Owner:GUANGZHOU SHIYUAN ELECTRONICS CO LTD +1

Large-space three-dimensional feature point autonomous photoelectric measurement system and method, electronic equipment and storage medium

The invention discloses a large-space three-dimensional feature point autonomous photoelectric measurement system and method, electronic equipment and a storage medium. The method comprises the following steps: step 1, building the large-space three-dimensional feature point autonomous photoelectric measurement system; 2, initializing a system, and starting data acquisition; 3, acquiring and processing a space key point image and extracting a central point; and 4, guiding the laser tracker to measure space key points. According to the invention, a high-resolution camera is built through a rotary table and is used for searching and collecting key point images of a component, feature extraction and key point identification are carried out on image data through a controller by using a deep learning technology, and accurate extraction of the center of a circular light spot is carried out through a Hessian matrix method. The laser tracker is guided to adjust the pitching angle and the yaw angle of the laser tracker through a PID algorithm, the center of a feature point subjected to visual recognition coincides with the center of a light spot projected by the laser tracker, and automatic, intelligent and high-precision measurement of key points on the surface of a large component can be achieved.
Owner:JIANGSU JITRI INTELLIGENT OPTOELECTRONIC SYST RES INST CO LTD

Assembled canal structure for high-standard farmland irrigation

The utility model relates to the field of farmland water conservancy irrigation facilities, in particular to a high-standard spliced canal structure for farmland irrigation, which comprises main bodies, sliding grooves are formed in the two ends of each main body, a connecting plate is arranged between every two adjacent main bodies, the connecting plates and the sliding grooves are arranged in a sliding manner, and a positioning assembly is arranged between every two adjacent connecting plates. Through the arrangement of the convex plate, the connecting plate, the sliding groove, the positioning assembly and the like, the upper ends of the two connected main bodies are positioned and connected through the positioning assembly in the working process, and the convex plate part, the connecting plate part and the sliding groove are matched with one another, so that the filtering effect is improved, and the filtering effect is improved. By pulling out the connecting plates and releasing the fixing of the positioning assemblies, the fixing between the two adjacent main bodies is released, the main bodies are convenient to replace, and normal use and irrigation of the whole canal are guaranteed.
Owner:HUBEI LIHENG CONSTR ENG CO LTD