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58results about How to "Solution feasibility" patented technology
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Identification method for USB interface equipment
This invention relates to information or other signal commission between BIOS device and central processor, in detail to a USB interface device identification method. The computer is set with identification elements and device control module, USB interface device ID set module, USB device driving program and related information form. The computer uses the relation between USB interface devices, USB interface and device control module and the method to timely get the control information of the USB interface device to realize the dynamic identification of the device.
Owner:SHANDONG NEW BEIYANG INFORMATION TECH CO LTD
Method for examining property of heart recovery based on cardiogram of flat motion
InactiveCN1915166ASolution feasibilityReduce riskDiagnostic recording/measuringSensorsRange of motionPeak value
A method for testing the heart recovery quality based on the plate movement electrocardiogram includes such steps as recording the plate movement electrocardiogram, choosing fixed leads for continuously measuring the QT gaps at intervals not higher than 10 S, taking the average of 3 waveforms for analysis, using ORIGIN software to analyze TQ gaps one by one, non-linear fitting by particular indicial equation to obtain QT recovery curve, using the ORIGIN software to generate its slope distribution curve, finding out the minimal TQ gap relative to movement peak, and finding out its relative value on vertical coordinate axis to obtain maximal slope Smax.
Owner:WUHAN UNIV
Cross-department ocean data sharing method based on block chain
ActiveCN109413174AFast data sharingImprove the efficiency of trust transferFinanceUser identity/authority verificationData sharingData processing
The invention discloses a cross-department ocean data sharing method based on a block chain. The method comprises the steps of according to an agreement negotiated by multiple users, generating an intelligent contract, and determining a consensus node; via the consensus node, deploying the intelligent contract into a P2P network of the block chain; receiving a data processing request of any oceandata department, authenticating and checking data requested by the data request, and generating a sharing list, wherein the any ocean data department belongs to one of the multiple users; storing thesharing list into a block chain account and diffusing the same; performing whole-network consensus on the sharing list and spreading to the whole network, and generating an overall sharing list; and based on the overall sharing list, sharing the ocean data across the departments. According to the method provided by the invention, by using the distributed computing nodes and accounts based on the block chain, the problem of cross-department sharing feasibility and security of the mass data is mainly solved.
Owner:CSSC SYST ENG RES INST
Long trunk line intersection signal coordination control method based on segmented green waves
ActiveCN112509342AImprove adaptabilityImprove controlRoad vehicles traffic controlAlgorithmEngineering
The invention discloses a long trunk line intersection signal coordination control method based on segmented green waves. The long trunk line intersection signal coordination control method comprisesthe following steps of: inputting related information of a long trunk line intersection, and stipulating long trunk line signal control limiting data; introducing a state variable to describe whethereach intersection is a green wave segmentation point or not on the basis of a bidirectional green wave control model; adjusting bandwidth constraints and whole-loop constraints in the model accordingto a bandwidth relationship and a green wave band transfer relationship between intersections in the same sub-section and different sub-sections, identifying a connection relationship between adjacentintersections, and constructing a long trunk line subsection green wave coordination control optimization model by taking maximization of the sum of bandwidths of all intersections as a target; and solving the model, and outputting related control parameters to obtain a long trunk segment green wave control scheme. Starting from traffic flow properties, long trunk line intersections are flexiblycombined, the problem that feasible bandwidth is difficult to obtain through long trunk line two-way green wave control is solved, and the adaptability of a traditional green wave control method is improved.
Owner:SOUTHEAST UNIV
Polynomial modular multiplication coprocessor based on lattice-based cryptosystem
ActiveCN104065478AImprove efficiencyImprove computing efficiencyPublic key for secure communicationDigital data processing detailsFast Fourier transformCoprocessor
A polynomial modular multiplication coprocessor based on a lattice-based cryptosystem comprises a first register file, a second register file, a third register file and a fourth register file, and further comprises a multiplexer, an input register file, a fast Fourier transform module and an output register file, wherein the input end of the multiplexer is connected with the third register file, the fourth register file and the output of a modular multiplication inverse element operation unit; the input register file is connected with the multiplexer and an address mapping table; the fast Fourier transform module is connected with the input register file and the output end of the first register file under modular computation; the input end of the output register file is connected with the output end of the fast Fourier transform module under modular computation, and the output end of the output register file is connected with the multiplexer; the output end of a demultiplexer is connected with an output end and a modular multiplication unit, and the output end of the modular multiplication unit is connected with the modular multiplication inverse element operation unit; the input end of the address mapping table is connected with the second register file. According to the coprocessor, an FPGA platform is used for hardware design, and the polynomial modular multiplication coprocessor based on the lattice-based cryptosystem is obtained.
Owner:PHYTIUM TECH CO LTD
IRT based information processing method and device
ActiveCN108229688ASolve efficiency problemsSolution feasibilityMachine learningElectrical appliancesInformation processingHypothesis
The invention discloses an IRT based information processing method and device. The method comprises that an answer information sample of a preset number of question answerers about a target item bankis obtained; based on a hypothesis that a question answering condition of each question answerer is seen as an independent event, the frequency weight that a corresponding question in the target itembank is answered correctly by all question answerers with a preset learning ability is determined; the frequency weight is substituted into a preset estimation model, a target estimation model which is a maximal posterior probability estimation model based on an IRT model and an MML estimation method is obtained; and the target estimation model is trained in the MML estimation method according toanswer sample information so as to estimate question information of different questions in the target item bank. Via the technical schemes, the MML estimation method based on the IRT model can be applied to a self-adaptive learning environment in a better way, and the operation efficiency and estimation accuracy of the model are improved effectively.
Owner:BEIJING BYTEDANCE NETWORK TECH CO LTD
Method for calculating eyeball shape, eye axis, and curvature of experiment animal by employing in-vitro measurement
ActiveCN105066901AImprove accuracyImprove reliabilityUsing optical meansStructure analysisOptical measurements
The invention relates to a method for calculating the eyeball shape, eye axis, and curvature of an experiment animal by employing in-vitro measurement. Fixed position shooting of an in-vitro eyeball is performed by employing an optical apparatus, and the eyeball shape, the eye axis, and the curvature of the experiment animal are calculated via a digital simulation method. The method is advantageous in that optical measurement is employed, the contour of the eyeball is measured in a non-contact manner via a macro shooting device, and then corresponding pixel conversion is performed for measurement so that the accuracy of results is greatly improved, and tiny change of the structure of the eyeball can be discovered and observed; the eyeball of a guinea pig is simulated to an inclined oval with a clear mathematical equation, and the corresponding angles are calculated via analytic geometry and the trigonometric function principle in mathematics so that the accuracy of the results is greatly improved; besides, the results are all obtained by calculation so that the objectivity of the results is greatly guaranteed, and basis is provided for the analysis of the structures of the eyeballs of the guinea pigs in different experiment groups.
Owner:JINSHAN HOSPITAL FUDAN UNIV
Test data automatic generation method oriented toward modified condition/decision coverage
The invention discloses a test data automatic generation method oriented toward modified condition / decision coverage. Test data with which branch nodes can be covered are looked for according to modified condition / decision coverage criteria, so that a test data set of source codes to be tested is generated. The step that the test data with which the branch nodes can be covered are looked for according to the modified condition / decision coverage criteria is achieved in a method that an input vector set is constructed through a random method first, operational analysis is conducted on the input vector set, then the input vector set is expanded in a linear fitting means, and the test data with which the branch nodes can be covered according to the modified condition / decision coverage criteria are obtained through repeated iteration. The method is highly automated, unit testing efficiency can be improved as much as possible, test cost is lowered, and criteria oriented toward modified condition / decision coverage are supported.
Owner:NANJING UNIV
Harrowing device for collecting and breaking plastic cloth
ActiveCN102836865AEasy to recycleReduce pollutionSolid waste disposalPlastic recyclingPlastic filmRidge
The invention belongs to the fields of collection of garbage and plastic film, and cleaning and breaking of land and garbage, and in particular relates to and provides a harrowing device for collecting and breaking plastic cloth. A technical scheme is as below: the harrowing device for collecting and breaking plastic cloth comprises a material cleaning device, a material discharging device and / or a frame, and also comprises a harrowing breaker; and the harrowing breaker, the material cleaning device and / or the material discharging device are mounted on the frame. The invention has the following beneficial effects: the device can recover inorganic substances such as plastic in the garbage and land, as well as break and harrow lumps and weathering ridge in the soil, and has a simple structure, reliable and stable performance, convenient operation, easy maintenance and long service life.
Owner:刘素华
Simple bus protection method based on system topology
ActiveCN106329492AProtection against misuseSolution feasibilityEmergency protective circuit arrangementsFault handlingSystem topology
The invention discloses a simple bus protection method based on a system topology. According to a primary system topology structure, bus unit modules are configured according to buses, each bus unit module judges the fault mode of the bus section according to incoming line and section over current conditions, and a fault processing module realizes small power, incoming line and section tripping processing according to a received outgoing line protection blocking signals and the fault mode of each bus unit module. Failure protection on the incoming line and a section switch can also be considered. By adopting the simple bus protection method of the invention, the problems of complex realization and poor selectivity existing in the existing simple bus protection can be solved, and no misoperation in the case of outgoing line fault can be ensured; and in the case of fault in the bus area, an over current incoming line or an over current section is cut off selectively according to a low bus and section over current condition, the selectivity and the quickness of simple bus protection are improved, and the practical value is high.
Owner:NR ELECTRIC CO LTD +1
Adjusting device and method for preventing automobile instability due to high-temperature tire bursting
PendingCN108638763ATo achieve the adjustment effectPrevent tire blowoutAnchor handling/lashingTyre measurementsElectricityElectronic control system
The invention discloses an adjusting device and method for preventing automobile instability due to high-temperature tire bursting and belongs to the field of electronic control systems of automobilesafety. The adjusting device comprises a sensor module, an electronic control unit, an automobile state adjusting device and an alarm lamp. Through information exchanging of electric signals between devices, quick response is conducted to change the automobile traveling state so as to change the air pressure of a tire. The original steering action of a driver can be kept, the automobile speed is decreased, the situation that due to the overlarge tire pressure, the driver conducts operating mistakenly and thus stability is lost is avoided, meanwhile the change amplitude of the automobile speedis small, and the traveling safety is guaranteed. The invention further discloses the adjusting method. According to the adjusting method, the tire pressure can be monitored in real time when an automobile travels at the high temperature, and according to the traveling environment, the traveling posture of the automobile is changed to control the tire pressure of the automobile so as to prevent the automobile instability due to tire bursting.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Edge cloud migration method and system suitable for wireless ad hoc network environment
PendingCN114465877ADifferent hardware architecturesImprove compatibilityNetwork topologiesTransmissionComputer hardwareWireless ad hoc network
The invention provides an edge cloud migration method and system suitable for a wireless self-organizing network environment, and the method comprises the steps: generating a virtual machine coverage file of a virtual machine disk and a memory snapshot, transmitting the virtual machine coverage file, synthesizing the virtual machine coverage file with a basic virtual machine mirror image file stored in an edge cloud, and generating a starting virtual machine. And meanwhile, by deleting redundant repeated data in a virtual machine coverage file, eliminating semantic difference between an application layer and a virtual machine bottom layer and a parallel transmission synthesis mode, the size of the virtual machine coverage file is further reduced, the migration efficiency is improved, the network load is remarkably reduced, and low-delay and high-reliability migration in the wireless ad hoc network is realized.
Owner:北京韦加智能科技股份有限公司
Robot controller design method, device and equipment and readable storage medium
ActiveCN112859601AFix stability issuesSolution feasibilityAdaptive controlLoop controlTarget control
The invention discloses a robot controller design method, device and equipment and a readable storage medium. According to the method, a kinetic model of the robot is established, a target control model of the robot is determined, an event triggering mechanism of the robot is designed according to the kinetic model, and model description is performed on the target control model, so that a function approximation model of the target control model is determined; and on the basis of the event triggering mechanism, a control law and an adaptive law of the robot is constructed by using the function approximation model, a closed-loop control model of the robot is determined, and a target controller of the robot is established by using the control law, the adaptive law and the closed-loop control model; the nonlinear problem of an event triggering mechanism is solved, and the stability and feasibility of the control system of the fan detection robot operation arm based on event triggering are improved.
Owner:HUNAN INSTITUTE OF ENGINEERING
Automatic resistance welding device with continuous automatic discharging function
PendingCN112828431ALow costSolve efficiency problemsShearing machinesShearing machine accessoriesProcess engineeringMetallic materials
The invention discloses an automatic resistance welding device with a continuous automatic discharging function. The automatic resistance welding device comprises a workbench, a feeding mechanism, a welding mechanism, a cutting mechanism, a pressing mechanism, a positioning mechanism and a traction mechanism, wherein the feeding mechanism is arranged on one side of the workbench; and the welding mechanism, the cutting mechanism, the pressing mechanism, the positioning mechanism and the traction mechanism are sequentially and fixedly arranged on the workbench from the feeding mechanism to the other side. According to the automatic resistance welding device with the continuous automatic discharging function, manual operation is replaced with automatic unwinding and automatic resistance welding, errors caused by manual operation can be greatly reduced, and the production efficiency is greatly improved; and meanwhile, the missing rate of surface treatment products is decreased, the quality of the surface treatment products of continuous metal terminals can be greatly improved, and thus the surface treatment production cost of continuous metal materials is reduced.
Owner:KUNSHAN YIDING IND TECH CO LTD
Operation and maintenance mode-based distributed photovoltaic economy diagnosis method
InactiveCN105354662ASolution feasibilitySolve the economyResourcesInformation technology support systemState of artLife time
The invention relates to an operation and maintenance mode-based distributed photovoltaic economy diagnosis method. The method comprises the following steps: 1) obtaining an operation and maintenance mode of the current distributed photovoltaic generation; 2) obtaining an investment subject of the current distributed photovoltaic generation; 3) determining the component factors of the whole life cycle cost and benefit under the investment subject in the step 2) according to the operation and maintenance mode obtained in the step 1); and 4) diagnosing the economy of the current distributed photovoltaic generation. Compared with the prior art, the method is capable of solving the feasibility and economy problems of the operation and maintenance modes of distributed photovoltaic generation, and guiding the investment subjects of the distributed photovoltaic generation to select proper operation and maintenance modes according to different operation and maintenance requirements and benefit requirements so as to improve the comprehensive benefits of distributed photovoltaic power generation, and has the advantages of being simple, effective and high in reliability.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +2
Method and device for realizing network translation to IPv6 (Internet Protocol Version 6) based on PNAT (Prefix Network Address Translation) and terminal device
InactiveCN105681481ASolve the need to modify a large number of hostsSolution feasibilityTransmissionTerminal equipmentComputer terminal
The invention discloses a method and a device for realizing network translation to IPv6 Internet Protocol Version 6) based on PNAT (Prefix Network Address Translation) and a terminal device. The method is applied to CPE (Customer Premise Equipment) which is located between a LAN (Local Area Network) and a WAN (Wide Area Network) and comprises the steps of obtaining a message; and carrying out PNAT for the message, and carrying out corresponding uplink or downlink transmission for a translation result. According to the method, translation to the IPv6 is realized by realizing a PNAT function on the CPE, so that technical problems existing in the prior art are avoided, and the problems in the prior art that modification is required for a large number of hosts in a host equipment modification scheme and the feasibility is low are solved.
Owner:ZTE CORP
Device for testing electrical properties of solar battery
PendingCN107911080AStable electrical contactTest accuratePhotovoltaic monitoringPhotovoltaic energy generationCopper wireElectricity
Owner:TAIZHOU LERRISOLAR TECH CO LTD
Method for implementing image processing of wedge-and-strip photon counting detector by FPGA
InactiveCN104035680AReduce operation timeImprove calculation accuracy2D-image generationInput/output processes for data processingImage storageCollection system
The invention belongs to the technical field of photoelectric detection and relates to a method for implementing image processing of a wedge-and-strip photon counting detector by the FPGA. The method includes the steps: a CPU writes coordinate calculation formula parameters into an image processing unit; the image processing unit receives image data from an image collection system; the coordinate calculation formula parameters are transformed, a floating-point number is enlarged into an integer expressed in a hexadecimal form; formula simplification is performed by transformation; a division method for a coordinate calculation formula is subjected to reduction of fractions to a common denominator, and division amount is reduced; multiplication of parameters of the coordinate calculation formula and image data is parallelly implemented by an IP core; results of the multiplication are subjected to summation or subtraction according to symbols of the parameters, and a sum or a difference is used as a dividend for division; division of the coordinate calculation formula is achieved through the IP core, and a quotient and a remainder are stored respectively; the calculation remainder and coordinate calculation constants are multiplied, and final coordinates are obtained by rounding and dividing the coordinate calculation constants and are transmitted to the CPU for image storage.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
Eriocheir sinensis quality estimation method based on unmanned aerial vehicle image processing
PendingCN112417378AAvoid stress responseAchieve acquisitionImage enhancementImage analysisPattern recognitionAquaculture industry
The invention relates to an Eriocheir sinensis quality estimation method based on unmanned aerial vehicle image processing, and the method comprises the steps: firstly photographing Eriocheir sinensisimages on site through an unmanned aerial vehicle, and obtaining a plurality of high-quality Eriocheir sinensis images; secondly, preprocessing the image, including image correction, image noise reduction and target extraction; then, for the Eriocheir sinensis target area, using Wiener filtering to restore the target area, performing edge detection by using a Canny operator after the original image is updated, and extracting an Eriocheir sinensis feature area; and finally, calculating the pixel area of the feature region, establishing a quality estimation model for the quality and crustaceanarea of the Eriocheir sinensis by using multiple regression models, performing error analysis, and preferentially selecting the estimation model. Compared with a traditional eriocheir sinensis qualityestimation method, the eriocheir sinensis quality estimation method has the advantages that the stress reaction of eriocheir sinensis caused by the traditional method is effectively avoided, the estimation precision is high, and the high requirement of the modern aquaculture industry for Eriocheir sinensis cultivation refinement management can be met.
Owner:CHANGZHOU UNIV
BIM lintel generation method based on list item
PendingCN113656863AResolve accuracySolution feasibilityGeometric CADConfiguration CADAlgorithmData source
The invention discloses a BIM lintel generation method based on list items. The method comprises the following steps: 1, picking up all doors and windows under a secondary structure; 2, classifying and identifying all walls under the secondary structure according to list items; step 3, repeatedly generating and judging, and checking whether a lintel is generated at a target position before generating a new lintel; if not, continuing the next step; if the lintel has been generated, performing the next step; step 4, performing door and window width acquisition under a secondary structure, and defining a data source for door and window width acquisition; step 5, performing door and window top height acquisition under a secondary structure, and defining a data source for door and window top height acquisition; 6, setting a support, and defining a support rule generated by a lintel; step 7, exceeding setting: setting a processing scheme when the lintel exceeds the wall range; and step 8, creating the lintel according to the size and position information of the lintel. Through application of the method, the problems of accuracy and feasibility of lintel generation in the BIM model can be solved.
Owner:SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
Multi-vehicle path planning method for closed, dense network type and automatic logistics park
PendingCN113566840ASolution feasibilitySolving the problem of optimal synthetic pathsInstruments for road network navigationSimulationLogistics park
The invention discloses a multi-vehicle path planning method for a closed, dense network type and automatic logistics park, which is used for modeling a two-dimensional space map to obtain a directed connected graph G(V, E), and comprises the following steps of: 1) creating an initial set; 2) expanding the path to a time dimension; 3) calculating conflicts and classification; 4) constructing a candidate path set; 5) solving a better path combination; 6) evaluating whether an end condition is reached or not; and 7) determining whether to quit according to the result of the step 6) and the number of iterations, and if not, iterating the step 2) to the step 6). According to the method, on the basis of the two-dimensional space, the driving conflict is comprehensively solved by considering the time dimension and the vehicle dimension, the problem of vehicle comprehensive feasibility is solved, and the approximate path comprehensive optimum is achieved on the basis.
Owner:SHANGHAI ZHENHUA HEAVY IND
A Coordinated Signal Control Method for Long Arterial Intersections Based on Segmented Green Waves
ActiveCN112509342BImprove adaptabilityImprove controlRoad vehicles traffic controlBandwidth constraintAlgorithm
The invention discloses a signal coordination control method for long trunk line intersections based on segmented green waves, which comprises the following steps: inputting relevant information of long trunk line crossings, specifying long trunk line signal control limit data; on the basis of a two-way green wave control model , introducing state variables to describe whether each intersection is a green wave segmentation point; according to the bandwidth relationship and green wave band transfer relationship between the intersections in the same subsection and the intersections between different subsections, adjust the bandwidth constraint and the whole ring in the model Constraints, identifying the connection relationship between adjacent intersections, aiming at maximizing the sum of the bandwidth of all intersections, constructing an optimization model for segmented green wave coordinated control of long trunk lines; solving the model, outputting relevant control parameters, and obtaining a segmented green wave control scheme for long trunk lines . Starting from the characteristics of traffic flow, the invention flexibly combines the intersections of long arterial lines, solves the problem that the bidirectional green wave control of long arterial lines is difficult to obtain a feasible bandwidth, and improves the adaptability of traditional green wave control methods.
Owner:SOUTHEAST UNIV
Mechanical sandbag automatic filling machine equipment
PendingCN112644746ASolution feasibilityImprove adaptabilityWrapper twisting/gatheringSolid materialEngineeringDry soil
The invention discloses mechanical sandbag automatic filling machine equipment. The equipment comprises a hopper assembly, a vibratory filter cone assembly, a spiral conveying device, a bag clamping mechanism, a turnover mechanism assembly and a bag sewing conveyor, wherein the vibratory filter cone assembly is hinged to the hopper assembly and is driven by the turnover mechanism to turn over by a certain angle; a lower connector of the hopper assembly is connected with the spiral conveying device, and soil filtered by the vibratory filter cone assembly passes through the hopper assembly with a certain slope and enters the spiral conveying device under the action of gravity; an external sandbag is clamped to a discharge port of the spiral conveying device through the bag clamping mechanism, and the discharge port of the spiral conveying device is sealed by the bag clamping mechanism after the set weight is reached; and the external sandbag is sealed by the bag sewing conveyor and sent out. Through the equipment, the problem that an existing bagging machine only can fill dry soil or soil with extremely low moisture content can be solved, the operation efficiency is improved, and the operation intensity is reduced.
Owner:CHINA HARZONE IND CORP
Silane self-crosslinking low-smoke halogen-free flame-retardant polyolefin oil-resistant elastomer material, and preparation method and application thereof
PendingCN113956577AReduce hardnessLow oil resistanceRubber insulatorsPlastic/resin/waxes insulatorsLow-density polyethyleneElastomer
The invention discloses a silane self-crosslinking low-smoke halogen-free flame-retardant polyolefin oil-resistant elastomer material, and a preparation method and application thereof. The elastomer material comprises a material A and a material B. The material A comprises a master batch, linear low-density polyethylene, a silane coupling agent and a first initiator, and the master batch comprises ethylene propylene diene monomer, an inorganic flame retardant, vinyl silicone rubber, a lubricant, a dispersing agent, an antioxidant and a second initiator; and the material B comprises the ethylene propylene diene monomer, linear low-density polyethylene, the inorganic flame retardant, the vinyl silicone rubber, the lubricant, the dispersant, the antioxidant and a catalyst. The preparation method comprises the following steps: mixing and banburying the master batch in the material A, extruding and granulating to prepare master batches, mixing and grafting the prepared master batches and other raw materials, and extruding and granulating to prepare the material A; and mixing and banburying the components in the material B, and extruding and granulating to prepare the material B. The elastomer material disclosed by the invention has the properties of low hardness, high oil resistance, high and low temperature resistance, water resistance, flame retardance, low smoke, zero halogen and the like, can be self-crosslinked by silane, and is suitable for rail transit wires and cables.
Owner:杭州以田科技有限公司
High-precision rotor for automobile VVT and manufacturing method of high-precision rotor
PendingCN106703925AHigh precisionSimple structureValve arrangementsMachines/enginesEngineeringMachining
The invention discloses a high-precision rotor for automobile VVT and a manufacturing method of the high-precision rotor. The rotor comprises a cylindrical body with a structure of a through hole, wherein a first flange, a second flange and a third flange, which extend outwards, are arranged on the outer side wall of the cylindrical body; the width of the cambered surface of the first flange is equal to that of the cambered surface of the second flange; the width of the cambered surface of the third flange is larger than that of the cambered surface of the first flange; axial notches are respectively formed in the cambered surface of the first flange, the cambered surface of the second flange and the cambered surface of the third flange; holes which communicate with the through hole are separately formed in the cylindrical body, on two sides of the first flange, two sides of the second flange, and two sides of the third flange; a flange through hole is formed in the first flange; and an axial groove which extends downwards is formed in the flange through hole. The rotor disclosed by the invention is high in precision, simple in structure, stable in performance, and convenient to mount and use. In manufacturing, before a product is completely burnt to be hard, a plurality of side holes and crossed holes are formed through primary machining; after finishing is performed on the product, a plurality of high-precision holes are formed through finish machining; and the economy and the high efficiency of drilling are guaranteed by utilizing a special characteristic of incomplete sintering of powder metallurgy.
Owner:扬州保来得科技实业有限公司
Ultrasonic-assisted laser micro-cladding method and device for gradient functional composite material
PendingCN114799182AImprove thermal conductivityFlat surfaceAdditive manufacturing apparatusMetallic material coating processesGradient materialGraphite
The invention provides an ultrasonic-assisted laser micro-cladding device for a gradient functional composite material. The ultrasonic-assisted laser micro-cladding device comprises a rack, a preset piece sample preparation assembly and an ultrasonic-assisted laser micro-cladding assembly, wherein the preset piece sample preparation assembly and the ultrasonic-assisted laser micro-cladding assembly are installed on the rack. The ultrasonic-assisted laser micro-cladding assembly comprises a laser micro-cladding head assembly and an ultrasonic-assisted workbench assembly. The invention also provides an ultrasonic-assisted laser micro-cladding method for the functional gradient composite material, which comprises the following steps: in the early stage of implementation, according to the gradient material theory, preparing a preset sheet sample through the procedures of controlling the component proportion of the copper-based composite material, performing a wet ball milling process, performing ultrasonic-assisted processing on the preset sheet, performing vacuum drying and demolding and the like; and then preparing the preset sheet sample into the graphene / copper-based gradient functional composite coating through a multi-channel and multi-layer processing mode under the action of a composite energy field based on an ultrasonic-assisted laser micro-cladding process. According to the method, the high-quality gradient functional composite coating can be formed in a metallurgical bonding mode through the laser micro-cladding technology.
Owner:WENZHOU POLYTECHNIC
Electrical performance test device of solar cell
PendingCN108133898AReduce the effects of reabsorptionImprove accuracyPhotovoltaic monitoringSemiconductor/solid-state device testing/measurementCopper wireEngineering
The invention provides an electrical performance test device of a solar cell. The electrical performance test device comprises an upper test table and a lower test table, wherein the upper test tablecomprises a copper conductive wire group, a flexible spring, convergence copper wires, a main body frame and a lifting device, the copper conductive wire group is used for testing current and voltageof a front surface of a battery piece, the flexible spring is used for adjusting tension forces of copper conductive wires, the convergence copper wires are respectively connected with current-voltagecopper conductive wires, the lifting device is connected with a motor, the lower test table comprises a substrate, a copper conductive strip, convergence copper wires and absorption holes, and the convergence copper wires are respectively connected with the current-voltage copper conductive strips. By the device, the problem of virtual short-circuit test caused by reflection of tabletop can be prevented, and the problem of conductive contact between electrodes on a front surface and a back surface of a double-side battery is also solved; and by integration of an automatic transmission device,the practicability of electrical performance test under the condition of battery yield is solved.
Owner:LONGI SOLAR TECH (TAIZHOU) CO LTD
Mobile robot path planning method based on improved butterfly optimization algorithm
ActiveCN113219989AQuality improvementImprove global search performancePosition/course control in two dimensionsAlgorithmEngineering
The invention discloses a mobile robot path planning method based on an improved butterfly optimization algorithm. The method comprises the following steps: modeling a working space of a mobile robot by using a grid method; setting initial parameters of a butterfly optimization algorithm; setting an initial position and a target position of an algorithm; searching an optimal path, initializing a taboo table and adding the taboo table into a butterfly starting position; calculating the intensity of fragrance generated at the current position of each butterfly, searching a subsequent transfer node by using the transfer probability, and stopping searching until the butterfly reaches the target position; judging whether the number of iterations of the algorithm reaches the maximum value or not, if yes, retaining the shortest path, and if not, continuing to perform path optimization until the optimal path is searched; smoothing the searched path, and outputting a smooth path; and enabling a simulation experiment to verify that the method can solve the problem of path planning of the mobile robot, and is an effective and feasible optimization algorithm.
Owner:江苏南大电子信息技术股份有限公司
A Method of Key Encryption Using Multidimensional Technology
ActiveCN105763320BHigh key levelImprove confidentialityKey distribution for secure communicationUser identity/authority verificationComputer hardwareData operations
Owner:INSPUR FINANCIAL INFORMATION TECH CO LTD
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