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378results about How to "Reduce total time" patented technology

Overhead line device parameter detection method based on BIM and three-dimensional point cloud fusion

The present invention discloses an overhead line device parameter detection method based on BIM and three-dimensional point cloud fusion. The method includes acquiring the three-dimensional point cloud image of an overhead line support device in real time; preprocessing the point cloud data of overhead line support device to realize point cloud data de-noising and structure plane detection and correction; establishing an overhead line BIM model and performing the point cloud processing to generate the standard overhead line support device point cloud data; registering the preprocessed overheadline support device point cloud data and the standard overhead line support device point cloud data to realize the registration segmentation of the overhead line support device point cloud data; andperforming the column structural component extraction on the local areas after the overhead line support device point cloud data segmentation to calculate the geometric structur parameters of the overhead line support device. According to the method, the processing time of the system is effectively shortened, and the accuracy and the real-timeness of system detection are improved, and the requirements of online detection on the geometric structure parameters of the high-speed railway overhead line support device on real-timeness and precision are met.
Owner:SOUTHWEST JIAOTONG UNIV

UV printing and coating process for metal lettering cover

ActiveCN102390192AImprove efficiencyReduce energy consumption and waste emissionsOther printing apparatusWaxPrinting ink
The invention relates to a UV printing and coating process for a metal lettering cover, comprising the following steps: (1) plate making; (2), surface treatment for a base material; (3) UV printing; (4) continuous curing of a UV light cluster; (5) coating on a printed pattern to protect the printed pattern; (6) inside coating, wherein epoxy-phenolic coating is adopted for coating; (7) spraying wax, wherein wax is sprayed on the front face and back face of the printed and coated base material. In the UV printing and coating process, pretreatment is carried out on the surface of the base material through a flame treatment machine so that quality defects caused by abrasion of the surface of the material are avoided, and better adhesive force between UV printing ink and the surface of the base material is ensured. In addition, the flame treatment machine and a material transporting part of a UV metal printing machine are integrated so as to form a processing pattern of on-line continuous base material surface treatment and printing production and avoid treatment of the surface of the base material by a drying house. Therefore, the production processes are reduced, the production efficiency is improved, consumption of natural gas energy and discharge of waste gas are greatly reduced, and the purposes of energy saving and environment protection are achieved.
Owner:SHANGHAI BAOYIN METAL DECORATION

Large-sized multi-nozzle pipe hot extrusion forming process formulation and mold design method

The invention discloses a large-sized multi-nozzle pipe hot extrusion forming process formulation and mold design method. Taking a double-nozzle pipe for example, the method comprises the following steps: determining the size of each part of an unmachined double-nozzle pipe after hot extrusion forming; determining the size of an initial pipe blank; determining the position of the center of a prefabricated hole and the size of the aperture; determining amount of compression in the axial direction of the pipe blank with the prefabricated hole, of which oxide skin is removed, required for finishing hot extrusion forming of a second nozzle; determining amount of compression in the axial direction of the pipe blank required for continuing to finish hot extrusion forming of a first nozzle; determining the dimensional parameter of a key part of the hot extrusion mold; selecting the structural form of the hot extrusion mold; determining the extrusion capacity parameter and selecting forming equipment; determining a technological flow of the double-nozzle pipe hot extrusion forming process. According to the method, a pipe inner hole and a nozzle inner hole can be directly formed, the structural strength at the nozzle is improved, the metal mechanic property and the structure property are improved, the manufacturing period is shortened, and the material utilization rate is improved.
Owner:UNIV OF SCI & TECH BEIJING

Detection system of automatic flexible checking tool based on contact measuring head

The invention discloses a detection system of an automatic flexible checking tool based on a contact measuring head, which comprises an adjustable tool, a measuring head seat, the contact measuring head, a controller, software and a main control computer, wherein the system uses the adjustable flexible tool to fix a workpiece and uses a contact measuring head with a communication interface to measure a relative dimension error. The measuring head is mounted on the measuring head seat capable of freely adjusting the gesture of the measuring head. Through the controller, one or more measuring heads are connected with the main control computer which controls the collection and treatment of measured data and realizes the automatic detection of the workpiece error. The system software makes statistic of the measured data, provides the information needed for controlling a statistic process and realizes the self-adapting calibration of the system. The invention has the advantages of good adjustability, low cost, high precision, fast speed, full automation, measures of quantization and the like, is an effective alternative scheme of current manual visual mechanical checking tool, and is also an excellent on-line detection scheme for dimension error of mechanical products.
Owner:涂成生

Quick large-number face recognition method and system

The invention relates to a quick large-number face recognition method and system. The quick large-number face recognition method includes the step of acquiring a registered user general database, the step of acquiring an in-venue user sub-database, and the login step. In the step of acquiring the registered user general database, associated data information including identity information of users is acquired, and the registered user general database is established. In the step of acquiring the in-venue user sub-database, when the users enter or leave a venue, the identity information of the users is verified, and if the identity information is identity information in the registered user general database, associated data information of the users entering the venue is called from the registered user general database and added to the in-venue user sub-database. In the login step, face images of the users about to conduct login operation are acquired and matched and recognized in the in-venue user sub-database, and then the recognition result is acquired. The quick large-number face recognition system comprises a registered user general database acquisition module, an in-venue user sub-database acquisition module and a login module. By the adoption of the scheme, the face recognition speed is high, and reliability is high.
Owner:SHENZHEN TAISHAN SPORTS TECH CO LTD

Profile extrusion production scheduling method, readable storage medium and device

The invention discloses a profile extrusion production scheduling method, a readable storage medium and a device, and the method comprises the steps: S100) receiving a production scheduling request, carrying out the analysis of the production scheduling request, carrying out the grouping of orders, and obtaining a target production plan; S200) calling a target constraint mechanism corresponding tothe target production plan, wherein the target constraint mechanism comprises an order sequence rule and a resource load balancing principle; S300) performing pre-scheduling, determining an order priority and a production platform equipment priority, and matching production platform equipment for the order; S400) carrying out the production scheduling on production in a period of scheduling timeafter the current time, determining the order priority in the production scheduling, enabling the production scheduling to be matched with production platform equipment, and locking a scheduling result is locked. According to the method, the matching schedule meets the production requirements, the equipment utilization rate is obviously improved, the delivery time is shortened, and the enterpriseproduction and operation efficiency and the enterprise core competitiveness are improved.
Owner:安徽海螺信息技术工程有限责任公司

Prestressed tube tensioning mold

InactiveCN101837608AGuaranteed effective itineraryAvoid bumpingMouldsPre stressSlurry
The invention discloses a prestressed tube tensioning mold, which comprises an upper mold and a lower mold. The upper mold and the lower mold are mutually fastened; and an inner mold is also arranged inside a mold formed by the upper mold and the lower mold. A tensioning mechanism is arranged at one end of the mold, and a tensioning fixed plate is arranged at the other end of the mold. The prestressed tube tensioning mold is characterized in that: the tensioning mechanism comprises a tensioning screw rod connected with a tensioning draw plate; the tensioning draw plate is connected with a tensioning connecting plate through a tensioning connecting piece; and the tensioning connecting plate is connected with concrete centrifugal products. The prestressed tube tensioning mold can effectively reduce the labor intensity, effectively suppress slurry leakage of a pile head, prolongs the service life of the screw rod and die assembly screws, guarantees the verticality of the screw rod and the section of the concrete centrifugal products, prevents the screw rod from inclining, reduces the die clamping probability and whole prestress non-uniformity of the pile, avoids steel mould damage and fittings damage during mold removal, avoids the damage of the concrete centrifugal products simultaneously, and improves the working efficiency.
Owner:SHANGHAI ZHONGJI PILE IND

Dyeing technique for polyester cotton or polyester viscose/chinlon/spandex multi-component fabric by one-bath two-step process

The invention relates to a dyeing technique for polyester cotton or polyester viscose/chinlon/spandex multi-component fabric by a one-bath two-step process and belongs to the technical field of textile dyeing process. The dyeing technical includes the following process steps: putting the to-be-dyed polyester cotton or polyester viscose/chinlon/spandex multi-component fabric into a dye vat, feeding water to the specified water quantity, increasing the temperature to 30+/-5 DEG C, sequentially adding salt or anhydrous sodium sulphate and levelling agent prior to continuing operation for 5-10 minutes, then adding reactive dye, disperse dye, weak acid dye or neutral dye for operation for 5-10 minutes prior to increasing the temperature to 60+/-2 DEG C at the rate of 0.5-1 DEG C/min, then adding sodium carbonate, keeping at the temperature for 30-50 minutes prior to neutralizing the sodium carbonate with dyeing acid, slowly regulating the pH value to 5.5-6.5, uniformly rotating prior to increasing the temperature to 130+/-2 DEG C at the rate of 1-1.5 DEG C/min, keeping at the temperature for 40-60 minutes, and then cooling and discharging water prior to aftertreatment. By the technique, the process of the dyeing technique can be shortened effectively, time for dyeing is reduced, production efficiency is improved, steam and water consumption is reduced, pollution discharge is reduced, and dyeing cost is lowered.
Owner:ZHEJIANG QIAOERTINGTING FASHION +1

Replacement flow shop energy efficiency optimization scheduling method integrating delivery date configuration

The invention discloses a replacement flow shop energy efficiency optimization scheduling method integrating delivery date configuration. The method comprises the steps of collecting production data to generate three energy efficiency optimization and delivery date configuration frameworks; carrying out integrated encoding between the workpiece and the machine by two frameworks; wherein the code of the rejected order in the third framework is spliced after the code of the received order; generating an initial solution by adopting an NEH heuristic algorithm according to a coding mode, and initializing a tabu table; performing tabu search on the later generated initial solution, and updating a local optimal solution and a tabu table; decoding the obtained optimal solution to obtain a scheduling scheme; generating an initial population according to a coding mode; calculating a target fitness value of the generated population and carrying out fitness value distribution; and performing selection, crossover and mutation operations on the later generated population, updating a local optimal solution, performing decoding, and performing integration to obtain a scheduling scheme. Accordingto the method, a scheduling scheme satisfying enterprises and clients is obtained in a reasonable time, energy consumption is reduced, enterprise profits are improved, and production efficiency is improved.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Aircraft aerodynamic configuration design method and system based on simulation and optimization coupling

The invention discloses an aircraft aerodynamic configuration design method and system based on simulation and optimization coupling, and the method comprises the steps: determining an aircraft configuration parameterization method according to a given aircraft configuration model, and obtaining a design variable; generating an initial sampling point by using a constraint domain experiment designmethod; carrying out flow field simulation calculation by using a high-precision pneumatic simulation model to obtain simulation flow field distribution, constructing a training set and generating a full flow field approximation model; predicting an optimal point in a design space for the full flow field approximation model, and taking the optimal point as a new sampling point; performing simulation calculation on the new sampling point by using a high-precision pneumatic simulation model to obtain a simulation flow field approximation model of the new sampling point; and outputting a new sampling point when a convergence judgment condition is met. Through deep coupling of the optimization algorithm and the simulation model, double acceleration of convergence of the simulation solution information acceleration optimization algorithm and acceleration of aerodynamic simulation solution by the optimization algorithm is realized, so that the total time consumption of the optimization process is greatly reduced, and the aerodynamic optimization efficiency is improved.
Owner:NAT UNIV OF DEFENSE TECH

Backward discrete state event-driven power electronic simulation method, device and medium

The invention discloses a backward discrete state event-driven power electronic simulation method, and the method comprises the steps: carrying out the simulation initialization and the simulation calculation at a k-th step, wherein K is not less than zero, and the simulation calculation at the k-th step comprises the following steps: S1, generating a system state equation at the k-th step; S2, determining the candidate quantification function value of each state variable at a (k+1)-th step; S3, building a finite-state machine, and determining the quantification function value of each state variable; S4, calculating a derivative vector based on the quantification function values at the (k+1)-th step and the system state equation; S5, determining the moment of simulation calculation at the (k+1)-th step based on the occurrence moment of an event. The invention also discloses a simulation calculation device and a computer readable storage medium storing a simulation program. According to the invention, the simulation method provided by the invention can achieve the high-efficiency selection of a Q function vector, and the simulation efficiency and numerical value stability of the method are apparently superior to the simulation efficiency and numerical value stability of a quantification state system (QSS) method and a conventional time discretization rigid solving method during the solving of a rigid system.
Owner:TSINGHUA UNIV

Multifunctional assembled inclined wedge

The invention relates to a multifunctional assembled inclined wedge which comprises a driving block, a sliding block and a sliding block seat, wherein both the driving block and the sliding block seat are in a split structure; each of the driving block and the sliding block seat comprises a standard component and an adjusting component; the standard component is connected with a stamping mold; and the adjusting component is used for adjusting the working angle of the inclined wedge. In the invention, each component comprises the standard component and the adjusting component which can be detachably connected; a user only needs to replace the adjusting component for realizing any working angle according to the use requirement; in the use process, when one component is damaged, only the component needs to be replaced, and the use cost is saved; the angle of the adjusting component can be changed freely as required, thus meeting the requirement of users for alternately using different types of inclined wedge mechanisms; and simultaneously, in the production process of a manufacturer, because the standard components of different types of inclined wedge mechanisms are the same, the standard components of the different types of inclined wedge mechanisms can be produced in enormous quantities, while the adjusting components meeting the corresponding requirements can be respectively produced in bulk according to the requirements of the different types of inclined wedge mechanisms.
Owner:QINGDAO NUOYIXIN MOLD PARTS
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