Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
181 results about "System impact" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Impact structures are the result of impact events on solid objects and, as the dominant landforms on many of the System's solid objects, present the most solid evidence of prehistoric events. Notable impact events include the Late Heavy Bombardment, which occurred early in history of the Earth–Moon system,...
Email filtering methods and systems
InactiveUS7072942B1Improve the level ofReduce the impactMultiple digital computer combinationsTransmissionService provisionSystem impact
Various embodiments of the invention address two critical problems that current email service providers face. First, there is the problem of maintaining high levels of customer service when email server systems are inundated with spam. Second, there is the problem of reducing the system-wide impact that spam has on the email delivery system. Current embodiments are directed to determining whether an email message is an unwanted bulk email message without necessarily considering the message that is conveyed by any portion of the email message. Through analyses of patterns of delivery of these email messages, profiles are built that allow an email server to ascertain whether there is a likelihood that any one particular email message constitutes an unwanted email message. If an email message is determined to likely constitute an unwanted email message, then memory-saving measures are implemented. In preferred embodiments, one copy of the email message is saved at a central, shared location that can be accessed by each of the intended recipients. This avoids having to replicate the email message across the system for each of the recipients.
Owner:MICROSOFT TECH LICENSING LLC
System and method for adaptive automated resource management and conservation
InactiveUS20140297001A1Accurately pattern of useEliminate needProgramme controlComputer controlElectricityResource Management System
Systems, methods, and devices to provide simple adaptive automated resource management of a resource system (such as but not limited to electricity, natural gas, water, data, bandwidth allocation, access to information, etc.) on a local basis, based on automatically detecting, measuring and combining time-varying resource provider preferences, resource market conditions, resource supply source conditions, environmental conditions and resource system impact on the environment, together with resource user locations, user priorities and preferences, and information about other conditions that may be relevant to the operation of the resource management system in order to optimize performance of the resource system to better meet or approach defined goals, and to measure and display the results achieved by the resource management system compared against those goals.
Owner:KASPAR LLC
Apparatus, system and for recycling rubbish
InactiveCN101281458AIntegrity guaranteedReduce shockResource allocationMemory systemsData integritySystem impact
The invention discloses a device, a system and a method for garage recovery. The method comprises the steps of collecting the running information of a system and application software, and determining whether to trigger garage recover according to the received data and preset judgment strategy; outputting a trigger massage if a trigger is needed; and triggering to execute garage recovery according to the trigger massage received by an execution device. The embodiment of the invention can provide self-protection according to predictable garage recovery time points, such that the system reduces system impact when executing garage recovery, and the data integrity is guaranteed; the system can control the execution of garage recovery during system idle period and small throughput period, thus reducing the system block caused by garage recovery; the system can recovery garage regularly, the execution duration is predictable, therefore, the execution time points, frequency and duration of garage recovery can be adjusted on the basis of different systems in order to reduce system cost.
Owner:HUAWEI TECH CO LTD
Distributed content exchange and presentation system
An Internet-oriented advertising exchange controller presents website content in a plurality of frames as well as support search criteria and other flexible forms of inventory formatting and delivery. Applications include Internet protocol request coordination or relay, cooperative frame based or interstitial advertising, and support for a local search or dataless metasearch system. The controller operates in a cookieless environment, has logic to protect advertiser's investment from AutoSurf equivalent systems, and protects against other inappropriate stimuli including denial of service or IP blast attacks. As such, an advertiser's credits are affected only by human stimuli. Communication with and among exchange controllers for sharing or delivering information about inventory occurs by a number of protocols with optional encryption. The controller provides a foundation for a robust, advertiser protective, web based advertising and network search system with economic support by use of unstoppable framesets, and ultimately frame-based advertising and presentation methods.
Owner:ASHBAUGH DOUGLAS
Method and apparatus for dynamically modifying a computer system configuration
InactiveUS7519696B2Input/output to record carriersMemory adressing/allocation/relocationSystem impactComputerized system
Owner:EMC IP HLDG CO LLC
Explicit outband signaling method in a wireless network supporting cognitive radio technology
ActiveUS20070207737A1Interference minimizationNetwork traffic/resource managementConnection managementTelecommunicationsCurrent channel
An explicit outband signaling method for detecting sharable resources for management of public resources in a wireless network supporting Cognitive Radio (CR) technology. To this end, the invention transmits state information for the current channel to a CR system in order to enable communication of the CR users, whose communication with the CR system is impossible due to an influence of an incumbent system, thereby allowing the CR system to stop the use of the interference channel, and to provide a corresponding service with another channel.
Owner:SAMSUNG ELECTRONICS CO LTD +1
Data synchronous loading method based on database log
InactiveCN106709043ASolve random dataSolving Consistency IssuesSpecial data processing applicationsStreaming dataData synchronization
The invention discloses a data synchronous loading method based on a database log. The method includes the steps that a data synchronous loading system is provided, wherein the system comprises a log streaming data analysis module, a data sending module, a data receiving and caching module, a data adaptation and recovery module and a data loading module, the log streaming data analysis module and the data sending module are arranged in a source-side database, the data receiving and caching module, the data adaptation and recovery module and the data loading module are arranged in a target-side database, the log streaming data analysis module is connected with the data sending module, the data sending module is connected with the data receiving and caching module, and the data receiving and caching module is connected with the data adaptation and recovery module and the data loading module; a log file generated in the database operation process is analyzed to obtain data operation motion, then data is sent to the target side in a network sending mode, and a corresponding analysis mode is selected to load the data according to the type of the target-side database. Thus, the purpose of different-database backup is achieved, the influence on a service system in the database backup process is effectively reduced, the flexibility of data backup is improved, and the reliability and consistency of the loaded data are improved.
Owner:CHINA REALTIME DATABASE
Two-pump confluence hydraulic control system
ActiveCN104806588AReduce hydraulic shockServomotor componentsServomotorsHydraulic pumpElectric control
The invention relates to a hydraulic control system and discloses a two-pump confluence hydraulic control system to overcome the defect of large two-pump confluence hydraulic system impact. The system comprises a working hydraulic system, a second hydraulic pump and an electro-hydraulic control unloading valve group. A valve group confluence oil outlet is communicated with a valve group confluence oil inlet through a pipe working system, and a check valve is arranged between the valve group confluence oil inlet and the valve group confluence oil outlet. The oil inlet end of an external control spill valve is communicated with the oil inlet end of the check valve, and an oil outlet of the external control spill valve is communicated with a valve group unloading oil outlet. A solenoid directional valve and a hydraulic operated directional valve are connected in series and are then connected with an external control end of the external control spill valve and the valve group unloading oil outlet. The hydraulic control end of the hydraulic operated directional valve is connected with a pilot valve through a shuttle valve. The control unit comprises a controller and a displacement detection unit, and the electric control end of the solenoid directional valve is connected with a controller. By means of the system, the hydraulic impact of a hydraulic actuator at the stroke terminal can be reduced.
Owner:柳工(常州)矿山机械有限公司
Industrial radio control system semi-physical security experiment platform
ActiveCN105607509ATesting and Analyzing SecurityTesting and Analyzing VulnerabilitiesSimulator controlPhysical securityControl signal
The invention discloses an industrial radio control system semi-physical security experiment platform. The platform comprises a simulation module, a controller host computer, a monitoring site, a programmable logic controller (PLC), an industrial radio communication device and a universal software radio peripheral (USRP) for simulating attacks. The simulation module is used for erecting a virtual controlled object and simulating different industrial scenes. The controller host computer is used for simulating different control algorithms. The monitoring site monitors in real time state signals, control signals and the like in a system operation process and stores correlation data in a database. The USRP is used for simulating a typical industrial radio attack mode. According to the experimental platform, through simulating a typical industrial object and a control algorithm, an attack on an industrial radio channel is simulated by use of the USRP, and the security of an industrial radio protocol and the control system performance under a typical attack are analyzed. The industrial radio control system semi-physical security experiment platform is low in system cost and can be applied to simulation of a typical industrial control object and a corresponding control algorithm and evaluation of the influence of a typical industrial radio attack on an industrial control system.
Owner:ZHEJIANG UNIV
Memory controller self-calibration for removing systemic influence
Self-calibration for a memory controller is performed by writing a voltage to a selected cell. Adjacent cells around the selected cell are programmed. After each of the adjacent programming operations, the voltage on the selected cell is read to determine any change in voltage caused by systemic offsets such as, for example, floating gate-to-floating gate coupling. These changes are averaged and stored in a table as an offset for use in adjusting a programming voltage or a read voltage in a particular area of memory represented by the offset. Self calibration method for temperature is determined by writing cells at different temperatures and reading at different temperatures to generate temperature offset tables for the write path and read path. These offset tables are used to adjust for systematic temperature related offsets during programming and during read.
Owner:MICRON TECH INC
Test method for eliminating effluence of DC engineering grounding electrode electric current on alternating-current system
The invention relates to a method for eliminating the impacts of the current of a direct current engineering grounding pole on an alternating current system, which utilizes another direct current engineering bipolar imbalance operation mode to generate the grounding current of the reverse grounding pole, thereby compensating the impacts of the grounding current of the grounding pole with the direct current single polar ground operation mode on the operation of the alternating current system. The method has originality in the pilot research aspect of a complicated technical problem of the impacts of the direct current power transmission engineering grounding pole on the alternating system, the obtained test result and the test data can be used as the important basis for compiling the dispatching operation mode of a power network.
Owner:CHINA ELECTRIC POWER RES INST +1
Power system cascading failure mode prediction method
Owner:ELECTRIC POWER SCHEDULING CONTROL CENT OF GUIZHOU POWER GRID CO LTD +1
Compressor running control method and control system and refrigeration cycle system
InactiveCN104121174ASolve problems that have a large impact on stabilityGuaranteed lubrication effectPump controlPositive-displacement liquid enginesControl systemSystem impact
The invention provides a compressor running control method and control system and a refrigeration cycle system. The compressor running control method comprises the steps of by acquiring the running frequency after a compressor is started, comparing the overclocking running time of the current running frequency exceeding the ideal running frequency with the overclocking ultimate running time and controlling a compressor running state according to a comparing result. By means of the compressor running control method, the control system and the refrigeration cycle system, the problem that the influence on an air conditioning system is large during oil return of the compressor in the prior art is solved. The purpose of ensuring lubrication of the compressor is achieved by controlling the running frequency of each compressor and the running time beyond the ideal running frequency and regulating the lubricating oil discharge amount, the system fluctuation is reduced, and the influence on the stability of the air conditioning system is reduced.
Owner:GREE ELECTRIC APPLIANCES INC
Calibration Of Dynamic Conditioning Systems
InactiveUS20180063900A1Improved control mechanismIncrease impactPackage sterilisationFood preservationSystem impactEngineering
Systems and methods are provided for calibration of conditioning systems through selected biomaterials and / or sensing unit where the variability of the conditioning system is identified and compensated in subsequent conditioning session to improve the conditioning system impact and consistency on the nutritional substance desired result.
Owner:ICEBERG LUXEMBOURG S A R L
Position S type instruction generation method
The invention provides a position S-type instruction realization method capable of being completed by a driver or a host computer. The method comprises the following steps: judging whether an S curve has constant acceleration running state; judging whether the S curve has uniform speed running state; and adopting different modes to calculate the process displacement and perform positioning according to the fact that whether the S curve has the constant acceleration running state or the uniform speed running state. The position S-type instruction realization method can avoid mutation of the speed, the acceleration and the complementary acceleration during running so as to make a system stably operated and parameters flexibly set and be capable of guaranteeing precise positioning of the system within the set time range and that no overshooting or insufficient stroke exists. Moreover, because the system corrects the acceleration in different processes, the acceleration is continuously changed and then the speed and a position instruction obtained by acceleration calculation are also continuously changed, the generated instruction can effectively avoid system impact and vibration.
Owner:东元总合科技(杭州)有限公司
Method for leaking memory of positioning virtual operation system
InactiveCN1896957AEffectively locate memory leaksEffective positioningError detection/correctionMultiprogramming arrangementsSystem impactLinked list
A method for positioning leakage of internal memory in virtual operation includes setting up a chain table, storing system state information of leakage point and leaked internal memory in said chain table when leakage of internal memory is occurred and storing chain table into storage media before system is collapsed, then carrying out analysis on recorded file and positioning leakage point of internal memory by restoring system state of leakage point and content of leaked internal memory.
Owner:BEIJING YUANXIN SCI & TECH
Heating furnace waste heat recovery generating device
InactiveCN102345982AImprove parametersImprove conversion efficiencyEnergy industryBoiler controlAir preheaterEngineering
The invention belongs to the field of heating furnace waste heat utilization, particularly a rolling heating furnace waste heat recovery generating device of the steel plant. The system is mainly composed of a heating furnace waste heat boiler, a heating furnace air preheater, a heating furnace coal gas heat pipe preheater, a heating furnace tail suction fan, a steam overheating boiler, a steam-filling type steam turbine generator unit and a chemical water system and the like. The generating device provided by the invention is characterized by adopting an all-closed system which recovers the waste heat in the heating furnace; and meanwhile, the system is not influenced by the heating furnace production rhythm and the generating steam system and can not affect the original operation condition of the heating furnace, thus the energy conversion efficiency of waste heat recovery can be maximally improved. Compared with the existing heating furnace waste heat recovery device, the device provided by the invention can maximally recover the flue gas waste heat of the heating furnace, increase the temperature of the stream for power generation without affecting the original working condition of the heating furnace, increase the waste heat generated energy, well ensure the operating parameters of the unit and realize the flexible operation mode of a low-pressure steam system of the whole plant. Therefore, the device has good economic benefit.
Owner:SHENYANG DONGDA IND FURNACE +1
Spacecraft system-level single event upset effect analysis method based on fault propagation
InactiveCN105117576AMeet design requirementsSignificant practical significanceSpecial data processing applicationsSimulationSpacecraft design
The present invention provides a spacecraft system-level single event upset effect analysis method based on fault propagation. The method comprises spatial radiation environmental effect estimation, system single event fault propagation modeling and device-level, single-machine-level and system-level oriented single event upset fault rate calculation. The method solves the systematic and quantitative problems of estimating the effect of a single event effect on a sensitive system during existing spacecraft design and can provide a necessary reference for selection of spacecraft components and optimization of an anti-radiation design scheme of a single machine and a system.
Owner:SHANGHAI SATELLITE ENG INST
Method for measuring temperature of distributed optical fiber temperature transducer system
ActiveCN101256098AGuaranteed accuracyThermometers using physical/chemical changesRayleigh scatteringRayleigh Light Scattering
The invention relates to a method for measuring temperature of the distributed optical fiber sensor system, which includes the following steps: (1) calculating the deviations between the measured values and the theoretical values of Rayleigh scattering signal and antistokes signal in system, (2) obtaining the improved values by subtracting the deviations from the measured values of actual Rayleigh scattering signal and antistokes signal in system, (3) determining the temperature value of every point on the optical fiber according to the ration between the improved values of the Rayleigh scattering signal and the anti-Stokes signal. Compared with the prior art, the invention has the advantages that: the result is calculated by the deviation between the measured values of the circuit and ambient noise, and the nonlinear pair Rayleigh scattering signal and the antistokes signals in the specific distributed optical fiber temperature sensor system and the theoretical values excluding the influence of the system, the measured value is compensated, which ensures the accuracy of sample in the Rayleigh scattering signal and the antistokes signal, and further ensures the accuracy of the collected temperature in the distributed optical fiber temperature sensor system.
Owner:浙江振东光电科技有限公司
Automobile bumper material and preparation method thereof
The invention provides an automobile bumper material and a preparation method thereof. The automobile bumper material comprises the following components by weight: 20% to 45% of polypropylene, 8% to 20% of saturated ethylene octene copolymer, 15% to 25% of calcium sulfate whisker, 8% to 12% of polypropylene grafted maleic anhydride copolymer, 32% to 45% of unsaturated polyester resin and 6% to 25% of plant fiber. The preparation method includes first evenly mixing materials except the calcium sulfate whisker in a mixing machine according to proportion, then adding the calcium sulfate whisker, extruding out the obtained materials and conducting cooling and pelleting on the materials. By modification of the materials, system impact strength is improved. The calcium sulfate whisker is adopted as the reinforcing material to improve composite body strength and simultaneously reduce molding shrinkage of products. The unsaturated polyester resin and the plant fiber are adopted to conduct infiltration and integration to reduce the weight of a bumper and effectively reduce pollution of waste of the bumper to the environment.
Owner:刘文富
Process for microelectrolysis catalytic oxidation and biochemical treatment of high-concentration waste water
PendingCN109205954AStrong impactFast removal of pollutantsTreatment with aerobic and anaerobic processesMultistage water/sewage treatmentHigh concentrationFlocculation
The invention relates to a process for microelectrolysis catalytic oxidation and biochemical treatment of high-concentration waste water. The process is performed according to the following steps of using high-concentration waste water; feeding the high-concentration waste water into an acidification pool for acidification treatment; then, sequentially passing the high-concentration waste water through a catalytic micro-electrolysis tank, a neutralization aeration pool, a flocculation reaction pool, a sedimentation pool, a catalysis oxidization pool, a comprehensive regulation pool, a USAB, anaerobic hydrolysis pool, a contact oxidization pool, a secondary sedimentation pool and a clean water pool. The process has the advantages that the efficiency is high; the energy is saved; the contaminant eliminating speed is high; the toxic and harmful substance and system impact resistance capability is high; the addition of dilution water is not needed, and the like.
Owner:JIANGSU TIANHONG ENVIRONMENTAL ENG
High-capacity medium voltage battery energy storage system
InactiveCN103199630AUniform energyTotal energy balanceElectrical storage systemElectrical batteryPre-charge
The invention discloses a high-capacity medium voltage battery energy storage system. An output end of an energy storage battery unit is connected with an input end of a pre-charging circuit to transfer a direct current voltage, an output end of the pre-charging circuit is connected with a direct current end of a single phase H bridge converter to transfer the direct current voltage, and an output end of the single phase H bridge converter is connected with a reactor in series. Therefore, one energy storage unit is formed, alternating current sides of a plurality of energy storage units are connected in series and then are connected with a connection inductor in series to form a branch circuit, three branch circuits are connected in an end-to-end mode to form a triangular connection, and then three endpoints of the triangular are connected with a medium voltage power grid in a three-phase mode. A grid inductor is formed by connecting of inductors of all energy storage units in series, the effect of single inductor fault on the system is small, and reliability is high. Under the same power, the high-capacity medium voltage battery energy storage system is high in voltage, small in current and current harmonics and low in demands on single capacity of a battery. Redundancy can be realized through a bypath, and reliability is high. The high-capacity medium voltage battery energy storage system has a balancing function on the battery. Compared with a medium voltage energy storage system of primary side star connection, the high-capacity medium voltage battery energy storage system is easy to control and high in reliability.
Owner:中国南方电网有限责任公司调峰调频发电公司 +1
Flexible DC system starting method and device based on modular multi-level current converter
ActiveCN109921454AAvoid shockThere is no limit to the timing of scheduling unlock commandsElectric power transfer ac networkSystem impactHarmonic
The invention relates to a flexible DC system starting method and device based on a modular multi-level current converter. The device comprises the following steps: S1, after the current converter station uncontrolled charging is finished, newly adding a sub-module for conducting a T2 tube for each bridge arm, thereby gradually adding the number of the submodule of each bypass; charging residual sub-modules to the charging voltage threshold through transformer valve side line voltage, and executing sub-module dynamic voltage-sharing control under a condition of maintaining unchanged total number of the submodule of each bridge arm bypass; S2, when receiving an unlocking instruction, stepping the DC voltage to a rated modulation ratio corresponding numerical value; and S3, after the DC voltage is stabilized, ramping the DC voltage to a DC voltage instruction value, thereby realizing the smooth starting of the flexible DC system. after the uncontrolled charging of the current converter station is finished, the effective voltage-sharing of the current conversion valve submodule at any time slot can be realized, the time for dispatching the unlocking instruction is unlimited, and the AC system impact and heavy harmonic problem caused by low DC voltage at unlocking early stage of the current converter station can be effectively avoided.
Owner:STATE GRID CORP OF CHINA +1
Shortcircuit fault current limiter
ActiveCN106385018AReduce running lossQuick Limit AmplitudeArrangements responsive to excess currentEmergency protective arrangements for limiting excess voltage/currentPower flowCurrent limiting
The invention provides a shortcircuit fault current limiter which comprises a circuit breaker CB1, a transfer current limiting unit and a current detecting unit. The current detecting unit is serially connected with the circuit breaker CB1. The circuit breaker CB1 is parallelly connected with the transfer current limiting unit, an assembly which is composed of the parallelly connected circuit breaker CB1 and the transfer current limiting unit. The output end of the current detecting unit is connected with the control end of the transfer current limiting unit. The current detecting unit detects fault current which flows over the branch circuit of the circuit breaker CB1 in a shortcircuit fault working condition. Furthermore a corresponding triggering switch in the transfer current limiting unit is triggered on, thereby switching off the circuit breaker CB1. A secondary winding of a coupling reactor is serially connected with a system line. Amplitude of the fault current can be quickly restricted, and system impact by the fault current is reduced.
Owner:HUAZHONG UNIV OF SCI & TECH +1
Liner type sediment ecological restoration system
ActiveCN102659295AGood water permeabilityEasy to storeBiological sludge treatmentSystem impactEngineering
The invention relates to a liner type sediment ecological restoration technology. Fillers are filled in liners, outer packaging layers are of net structures, and a way of continuous packaging is used. The liners are covered on the upper portion of polluted sediments, a certain gap can be reserved between each two adjacent rows of the liners, the area of each of the liners is 0.5-50 square meters, the thickness of each of the liners is 0.1-50cm, and overlook surfaces are one of shapes of a square, a polygon, a circle and other optional shapes. The fillers in the liners have the effects of absorbing retardant pollutants, restoring the sediments, overlaying water, simultaneously compacting the sediments and preventing the polluted sediments from resuspending, and agentia for promoting the restoration of the polluted sediments and the water body can be covered on the fillers or added into the fillers according to the polluted condition of the sediments and the water body environment. The liner type sediment ecological restoration technology is an in situ capping restoration technology which has a small influence on a water body ecological system, is capable of restoring the polluted sediments by purposefully selecting technology combinations, and is not influenced by water transportation, and finally the purposes of sediment compaction and reservoir capacity enlarging are achieved.
Owner:TIANJIN YIMING ENVIRONMENTAL TECH CO LTD
Dead zone compensating control method for mechanical arm servo system with guaranteed transient performance
ActiveCN105549395ASimple structureAvoid dead-zone inverse computation operationsAdaptive controlDynamic modelsVirtual control
A dead zone compensating control method for a mechanical arm servo system with guaranteed transient performance comprises following steps: a dynamic model of a mechanism arm servo system is established, and the system state, sampling time and control parameters are initialized; according to the differential mean value theorem, a non-linear input dead zone in the system is linearly approximated as a simple time-varying system, and a mechanism arm servo system model with unknown dead zones is deduced; a bounded function limiting the tracking error transient performance is introduced; a conversion error variable is defined by use of a error conversion method; a virtual control quantity of the system is designed by use of the Lyapunov method; an unknown virtue control quantity is estimated by use of a neural network; a first-stage wave filter is added to avoid problems such as inversion complexity blast. The invention provides a method for effectively compensating the influence of unknown dead zone input on the system and avoiding the problem of complexity blast brought by the inversion method, and for increasing the system transient tracking performance and guarantying stable tracking control of position signals.
Owner:NANJING CHENGUANG GRP
Method and system for parallel batch importing of data into read-only query system
InactiveCN103294799AReduce the burden onImprove service capabilitiesSpecific program execution arrangementsSpecial data processing applicationsSystem impactComputer module
The invention relates to a method and a system for parallel batch importing of data into a read-only query system. The system comprises a coordinator, a Hadoop drive program module, and an online query system drive module. The method includes: 1, receiving a request for original characteristic data, and forwarding the request to the Hadoop for processing; 2, establishing a Map / Reduce task on the Hadoop according to node mapping rules, and generating data blocks of the characteristic data at each reducer task node; and 3, placing the data blocks at the corresponding Hadoop nodes, and parallelly reading the data blocks on the corresponding nodes by the read-only query system. The method and the system have the advantages that the characteristic data is processed through a parallel frame of the Hadoop, so that consumption of online system computing resources by index calculation and copy calculation during the process of importing from an offline system to an online system; the data blocks formed by the Hadoop are parallelly and asynchronously read to the online system from the background, so that the influence on the online system is reduced.
Owner:PEKING UNIV
Synthetic aperture radar echo simulator and echo simulation processing method
InactiveCN102866390AReduce inter-chip communicationIncrease throughputWave based measurement systemsDouble data rateSynthetic aperture radar
The invention belongs to the field of the radar signal processing technology and discloses a synthetic aperture radar echo simulator and an echo simulation processing method. The simulator comprises an FPGA (field programmable gate array) chip, a DDR (double data rate), a power module, an upper computer, a network interface module, a D / A (digital to analog) module, a high-speed interface module and a data logger. The simulation method includes the steps of configuration parameter writing, full scene equivalent scattering coefficient determination, system impact response component determination and time-frequency transformation, time-frequency transformation of emission signals, inverse time-frequency transformation processing, small scene or large scene echo signal output and large scene echo signal playback. The single FPGA chip, the DDR and the data logger are only adopted for the main structure, the echo simulation process is achieved by the aid of assembly line work, and the synthetic aperture radar echo simulator has the advantages of simple system structure, high reliability, capabilities of effectively increasing the simulation speed of SAR (synthetic aperture radar) small scene echo signals, achieving real-time simulation of small scene echoes and being used for large scene echo signal simulation and echo signal playback and output, and the like.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Strong coupled type power failure current limiter
ActiveCN103647264AGood current limiting effectMeet low impedanceTransformersInductancesSystem impactEngineering
The invention relates to a strong coupled type power failure current limiter. The strong coupled type power failure current limiter is provided with an iron core and a plurality of coils; the plurality of coils comprises alternating current coils and direct current coils; the alternating current coils wind on a plurality of iron coil columns on the iron core respectively and meanwhile a direct current coil winds on the iron core column with the plurality of iron core columns wound on; or the direct current coils wind on the plurality of iron core columns of the iron core respectively and meanwhile an alternating current coil winds on the iron columns with the direct current coils wound on; or the alternating current coils and the direct current coils wind on the plurality of iron core columns of the iron core respectively; more than two alternating current coils are in an end-to-end connection in a mode which enables voltages to be superposed; more than two direct current coils are in end-to-end connection in a mode which enables alternating current voltages inside the direct current coils to be offset mutually. According to the strong coupled type power failure current limiter, a strong couple structure is adopted to satisfy requirements that the impedance is low under normal state and the impedance is large under a short circuit condition, the influence to a system under the normal state is small, a current limit effect is good under a short circuit condition, and a requirement for system reclosing is satisfied.
Owner:TBEA SHENYANG TRANSFORMER GRP CO LTD
Fiberglass reinforced black acrylonitrile-butadiene-styrene modified plastic capable of heat resistance and impact resistance, and its preparation method
The invention relates to a fiberglass reinforced black acrylonitrile-butadiene-styrene modified plastic capable of heat resistance and impact resistance, and its preparation method, which solves the problem of poor impact resistance of fiberglass reinforced composite material and simultaneously increases the heat resistance of a composite system. According to the invention, heat resistance and compatibility can be enhanced by adding multiunit random copolymers like heatproof styrene and maleimide, the rigidity can be raised by adding alkali-free staple glass fiber, and the linear expansion coefficient and molding shrinkage of the material can be reduced, simultaneously the impact resistance of a whole system can be improved by adding a silica acrylic acid system impact resistance modifier with small influence on mechanical property and heat resistance. The invention solves the problem that the impact resistance is rapidly decreased when the heat resistance and rigidity are raised. The method of the invention has the advantage of simple and clear technical scheme, and large scale production can be carried out.
Owner:SHANGHAI NAT ENG RES CENT FORNANOTECH
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com