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305results about How to "Ensure operability" patented technology

Distributed storage and parallel mining method for state monitoring data

A distributed storage and parallel mining method for state monitoring data includes the steps: defining function service models of a remote substation state monitoring unit and a state monitoring communication front-end processor by means of Web service description language, and exchanging the state monitoring data of electric power equipment in an electric power wide area network environment by a simple object access protocol; storing large-scale state monitoring data redundancy in a distributed file system, creating an index table for a state monitoring data file, inserting the index table into a large-scale structural data table and querying the state monitoring data according to a query request; and generating basic data and multi-dimensional analytical data by extracting, converting and loading to built a data warehouse, and parallelly executing association rules, classification and clustered data mining algorithm by means of MapReduce task decomposition and result summary. The distributed storage and parallel mining method can be used for effectively realizing distributed data exchange, redundant storage and rapid parallel processing for state monitoring information of the mass electric power equipment in an intelligent power network environment.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Electrical-information-acquisition-system-based theoretical line loss estimation method for distribution network

ActiveCN102509159ASolving Computational Accuracy DifficultiesCalculation model is accurateData processing applicationsDistortionEstimation methods
The invention discloses an electrical-information-acquisition-system-based theoretical line loss estimation method for a distribution network, and aims to overcome the shortcomings of great errors of the conventional theoretical line loss estimation method for the distribution network, difficulty in accurate analysis on the characteristics of load fluctuation, unbalance, harmonic distortion, parameter variation and the like of the distribution network, and the like. By the method, each loss influencing factor of a medium and low voltage distribution network can be scientifically, perfectly and comprehensively reflected; and compared with a 'root-mean-square current method', an 'average current method', a 'maximum current method', an 'equivalent resistance method' and the like for estimating line loss only according to the single line diagram of the distribution network, typical day 24 hours, asynchronous current recording data and the like in DL686-1999 guide of calculation of grid energy loss, the invention has more accurate algorithms, parameters, load data and the like for the theoretical line loss, and provides a novel concept and a novel method for the loss analysis and energy efficiency evaluation of the distribution network.
Owner:CHINA ELECTRIC POWER RES INST +1

High-efficiency visible monitoring analysis system for large-scale traffic data

InactiveCN103309964AQuick comprehension comparisonLowering the Barrier to AnalysisDetection of traffic movementSpecial data processing applicationsData streamDensity based
The invention relates to a high-efficiency visible monitoring analysis system for large-scale traffic data. The system is mainly based on a visible 'fingerprint' data model previously proposed by an inventor; the collected original traffic data is converted into the visible 'fingerprint' data model through a data conversion module under large-scale real-time data flow; and complex abstract conceptions such as periodic flow changes, track exceptions and hidden data errors in the traffic data can be visualized into simple and intuitional visual effects so as to provide automatic detection and analysis of city hot spot regions based on density, road traffic flow analysis based on historical traffic flow dynamic properties and real-time monitoring analysis of the traffic track exceptions based on vehicle historical data and statistic information for a user. The periodical flow change properties in the large-scale traffic data are analyzed in real time based on the historical data and the statistic information to find hidden rules and errors so as to provide analysis and support for the decision of the user. Therefore, the convenience is provided for an analyzer to quickly understand the data and the information, the analysis threshold is reduced, the application range is expanded, and the analysis efficiency and accuracy are improved.
Owner:GUANGZHOU HKUST FOK YING TUNG RES INST

Production method of non-residual slurry non-autoclaved prestressed concrete pipe pile

The invention relates to a production method of a non-residual slurry non-autoclaved prestressed concrete pipe pile. The production method comprises the following steps: (1) sequentially adding fine aggregate, coarse aggregate, cement, mineral powder, a mineral additive, water and a water reducing agent into a reaction kettle, and evenly stirring to obtain a concrete mixture; (2) prestressed tensioning the concrete mixture after material distribution and die assembling; (3) centrifuging the concrete mixture after prestressed tensioning, and sequentially carrying out low speed, low medium speed, medium speed and high speed centrifugation steps in centrifugation without producing residual slurry in the centrifugation process; (4) placing the centrifuged concrete mixture into a steam maintenance pool for steam maintenance. According to the production method, after multiple experiments, through contrastive analysis, the nanoscale mineral additive is added, and by matching with the compound high-performance water reducing agent and adjusting existing pipe pile centrifugation and steam maintenance steps, the non-residual slurry centrifugation and one-time demoulding strength of C80 are realized, so that the working procedures of pouring residual slurry and steam maintenance are eliminated, and the environmental pollution and energy consumption of enterprises are greatly reduced.
Owner:TIANJIN YONGSHENG XINHE PILE

High-purity metal refining method for limiting molten zone by utilizing electromagnetic shielding

ActiveCN102965518AImprove transmission efficiencyAvoid electromagnetic field interferenceIncreasing energy efficiencyNumerical controlIndium
The invention discloses a high-purity metal refining method for limiting a molten zone by utilizing electromagnetic shielding. A zone melting device is of horizontal type, a heating power supply is a high-frequency induction power supply, a heat-resisting sealed tube quartz furnace tube is used as a furnace chamber, a metal raw material is placed in a quartz boat, a sealed isolation chamber is formed by adopting graphite clapboards for electromagnetic shielding, the width of the molten zone is strictly controlled, electromagnetic field interference among multiple molten zones is prevented simultaneously, and the zone melting device is allowed to be internally provided with two or more molten zone with adjustable width; heat dissipation of a cooling tube also plays a role in auxiliary control of the molten zones; a stepper motor numerical control platform is automatically controlled by adopting a computer to push the quartz furnace tube; and the combination of a high-purity argon purification machine and a vacuum pump is adopted to ensure an inert gas environment inside the quartz furnace tube and prevent pollution caused by atmosphere. The device adopted by the high-purity metal refining method is simple in structure, low in cost, stable to operate, and high in degree of automation, and the high-purity metal refining method is applicable to high-purity refining for low-melting-point metals such as indium, tin, bismuth, lead or zinc.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY

Nicking endonuclease-based netted rolling cycle amplification system and use thereof

The invention relates to a nicking endonuclease-based netted rolling cycle amplification system and a use thereof. Based on the existing second-generation hyperbranched rolling cycle amplification technology, the amplification system utilizes a special endonuclease which is nicking endonuclease Nb.BsrDI so that a third-generation rolling cycle amplification technology which is a netted rolling cycle amplification (NGCA) technology is produced. Intensity of fluorescence signals produced by the netted rolling cycle amplification is increased with increasing of a target DNA concentration, is obviously stronger than that of fluorescence signals produced by linear rolling cycle amplification and hyperbranched rolling cycle amplification and has a detection limit of 0.1fM. Compared with the first-generation linear rolling cycle amplification and the second-generation hyperbranched rolling cycle amplification, the nicking endonuclease-based netted rolling cycle amplification system retains the prior art advantages in operationality, use cost and amplification time, further realizes signal amplification based on the prior art thereby providing good technical conditions for ultralow-abundance nucleic acid sample analysis and detection, and has a wide application prospect.
Owner:SHANGHAI UNIV

Client computer for protecting confidential file, server computer therefor, method therefor, and computer program

A client computer includes an encryption/decryption unit for encrypting a confidential file in which an encryption key ID is embedded using an encryption key corresponding to the encryption key ID and decrypting the confidential file using a decryption key corresponding to the encryption key ID, an encryption key storage unit for storing the encryption key, a decryption key storage unit for storing the decryption key, a compliance requirement storage unit for storing security compliance requirements for the client computer transmitted from a server computer, and a security requirement monitoring unit for determining, according to a read command or a write command for the confidential file issued by application software, whether the client computer complies with the security compliance requirements, and, when the requirements are complied with, passing the encryption key and the encryption key ID corresponding to the encryption key from the encryption key storage unit to the encryption/decryption unit in response to the write command or passing the decryption key corresponding to the encryption key ID embedded in the encrypted confidential file from the decryption key storage unit to the encryption/decryption unit in response to the read command.
Owner:IBM CORP

Tray-oriented SMD sampling and counting equipment

ActiveCN105555123ARealize targeted sampling inspectionEnsure operabilityElectrical componentsAutomatic controlSurface mounting
The invention belongs to the field of related equipment for manufacturing surface mount devices, and discloses tray-oriented SMD sampling and counting equipment. The tray-oriented SMD sampling and counting equipment comprises a material counting module, a pickup detection module, a material holding module, a matched control module and the like, wherein the material counting module is used for achieving conveying and slitting of a material strip and counting of to-be-detected elements; the pickup detection module is used for achieving visual positioning of to-be-detected elements, picking up the to-be-detected elements by a multi-degree-of-freedom manipulator and synchronously achieving the detection function; the material holding module is used for placing the elements before and after detection, and ensuring the accuracy of the positions and the postures of the elements; and the control module is used for achieving automatic control on the complete equipment. Through the tray-oriented SMD sampling and counting equipment, sampling of the elements on an SMD tray can be quickly finished; the sampled elements are recycled; in addition, counting of the elements on the tray can also be quickly and accurately finished; and slitting is selectively carried out under needed working conditions.
Owner:HUAZHONG UNIV OF SCI & TECH
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