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43results about How to "Reduce storage load" patented technology
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Embedded variable-rotation-speed bearing fault diagnosis device
ActiveCN103868694AAdapt to the requirements of fault diagnosisFast operationMachine bearings testingDecompositionPeripheral
The invention discloses an embedded variable-rotation-speed bearing fault diagnosis device. The device comprises a signal input module, a rotation speed adjustment module, a core computation module, a core control module and a power supply module. The device is of an FPGA+DSP+ARM structure and is structurally characterized in that an FPGA is adopted in the rotation speed adjustment module, vibration signals collected under a variable-rotation-speed condition are converted into uniform angle sampling results, and therefore the requirement for bearing fault diagnosis under the variable-rotation-speed condition is met; a DSP with a high computation speed and a large number of on-chip peripherals is adopted in the core computation module, and data analysis of the sampling results can be well completed; an ARM serves as the core of the core control module, and data analysis result diagnosis, data analysis result storage, data analysis result man-machine interaction and other functions can be completed with the assistance of peripheral hardware devices like an LCD touch screen; an empirical mode decomposition order spectrum analysis algorithm is adopted in the core computation module, it is the first time that the algorithm has been applied to embedded hardware, and bearing fault diagnosis accuracy and rapidity are improved.
Owner:SOUTHEAST UNIV
Speech keyword spotting system and system and method of creating dictionary for the speech keyword spotting system
InactiveCN102915729AFalse Alarm Rate ImprovementFalse alarm rate improvement is even betterSpeech recognitionSpecial data processing applicationsFeature extractionCluster based
The application relates to a speech keyword spotting system comprising an input unit used for receiving input speech signals, a feature extracting unit used for extracting at least one feature from the input speech signals, a classifier unit used for classifying the input speech signals into target keywords or out-of-vocabulary based on at least one feature and a dictionary, and an output unit used for outputting the classification result. The dictionary comprises grammar and a lexicon, wherein the grammar comprises target keyword lists and at least one sequence used for two identifiers of the out-of-vocabulary; the lexicon comprises pronunciation representing all candidate keywords of speech subsequence of one or more target keywords in the target keyword lists, and pronunciation representing at least one sequence; and one identifier represents a first class of phone, while the other identifier represents a second class of phone. The first class of phone and the second class of phone are clustered based on inherent features of phones. The first class of phone, the second class of phone and the phones of one or more target keywords are described by models.
Owner:CANON KK
Multi-element LDPC code decoding method based on hard reliability information
ActiveCN105763203AReduce complexityEasy to implementError correction/detection using multiple parity bitsCode conversionRound complexityCoding decoding
The application discloses an LDPC code decoding method comprising the steps that reliability of each binary hard decision symbol in hard decision symbol vectors is correspondingly initialized into an integral vector according to bits, and performing of iterative decoding is started; the value of each binary hard decision symbol is determined according to the reliability of each hard decision symbol in each time of iteration, and decoding verification is performed; each hard decision symbol of the current iteration acts as extrinsic information of a corresponding variable node Vj to be transmitted to each verification node corresponding to the variable node; as for the verification nodes, the extrinsic information transmitted by the verification node to each variable node connected with the verification node and the reliability are determined according to a verification matrix and the extrinsic information transmitted by each variable node connected with the verification matrix and transmitted to all the connected variable nodes; and as for the variable nodes, weighting is performed according to the bits, the extrinsic information is determined and the reliability information of each binary hard decision symbol of the corresponding variable node is correspondingly updated and then the next time of iteration is performed. With application of the multi-element LDPC code decoding method based on the hard reliability information, LDPC decoding complexity and storage load can be reduced.
Owner:GUANGXI UNIV
Block chain evidence storage method, evidence obtaining method and system
PendingCN111353180APrivacy protectionEnsure data securityDigital data protectionDigital data authenticationData packEngineering
The embodiment of the invention relates to a blockchain evidence storage method, an evidence collection method and an evidence collection system. The method comprises the steps: obtaining evidence storage data uploaded by a user, wherein the evidence storage data comprises file feature information of an evidence storage file and user information; uploading the evidence storage data to a user evidence storage block chain to enable the user evidence storage block chain to generate a block corresponding to the evidence storage data, and enabling the user evidence storage block chain to generate block feature information of the block; and determining that evidence storage of the evidence storage data succeeds according to the block feature information. Therefore, only the file feature information of the evidence storage file is stored in the device for realizing the method, and the evidence storage file does not need to be stored; the data security of an evidence storage file can be ensured, the file is prevented from being tampered, and the privacy of a user is effectively ensured; meanwhile, a system for realizing the method in the embodiment does not need to store a storage certificate file, so the storage load of the system can be greatly reduced, and the related hardware cost is reduced.
Owner:JD DIGITS HAIYI INFORMATION TECHNOLOGY CO LTD +1
Multimedia file cloud storage platform and method for eliminating redundancy by using cloud storage platform
InactiveCN106446263AImprove scalabilitySolve the problem of dynamic access to cloud storage platformSpecial data processing applicationsInformation processingFile transmission
The invention discloses a multimedia file cloud storage platform and a method for eliminating redundancy by using the cloud storage platform, and belongs to the field of information processing. The multimedia file cloud storage platform comprises a storage interface management subsystem, a cluster management subsystem and a storage management subsystem, wherein the storage interface management subsystem is used for generating an operation instruction and used for communicating with the cluster management subsystem or the storage management subsystem. The method for eliminating redundancy by using the cloud storage platform comprises the following steps: firstly, calculating fingerprint information of an uploaded file, generating a verification instruction, transmitting the verification instruction to the cluster management subsystem to be judged, if the fingerprint information is available, checking a corresponding file metadata instruction, and feeding back a result; or else verifying the fingerprint information of the file, and transmitting a result; continuously judging whether the cloud storage platform has identical files or not, if the cloud storage platform has identical files, transmitting a redundancy record adding instruction, and uploading a result; and if the cloud storage platform does not have identical files, storing the files, adding instructions, and uploading a result. By adopting the method, the storage load of a storage server can be reduced, and file transmission between a user and the cloud storage platform can be accelerated.
Owner:BEIHANG UNIV
1553B bus IP core and monitoring system
The invention discloses a 1553B bus IP core. The IP core comprises a bus transceiver and a main module. The bus transceiver and the main module are integrated on an FPGA; the bus transceiver is used for receiving a bus message from a 1553B bus and forwarding the bus message to the main module. The main module is used for decoding the received bus message, analyzing whether the message is correct,acquiring attribute information and original information of each message, and packaging and storing according to a packet format. The invention also discloses a 1553B bus monitoring system, and the system comprises the IP core and a control module, and the IP core also comprises an AXI bus adapter. The control module is used for reading the stored data from the main module through AXI bus switching and sending the control instruction and the configuration information to the main module. The system is suitable for the application field of satellite electronics, and has light weight, integrationand relative independence. The IP core can serve as an IP core to be attached to an on-chip bus protocol, power consumption is low, the IP core is relatively independent and can be migrated and reused, and integration of multiple IP cores in a board is facilitated.
Owner:NAT SPACE SCI CENT CAS
Simulation clock display method and device and LED display control card
ActiveCN104765266AReduce storage loadImprove communication efficiencyVisual indicationVisual indicationsGraphicsLED display
The invention relates to a simulation clock display method and device and an LED display control card. The method comprises the steps of acquiring time-pointer-free dial plate data, acquiring the position coordinate data of at least one time pointer according to the current time, obtaining corresponding time pointer graphic data according to the position coordinate data of each time pointer, integrating the time pointer graphic data with the time-pointer-free dial plate data to obtain simulation clock data, and driving and controlling an LED display screen to display a simulation clock corresponding to the current time according to the simulation clock data. Therefore, the size of data sent to an LED display control card by upper computer software can be reduced greatly, the efficiency of communication between software and hardware can be improved greatly, and the storage load of the LED display control card can be reduced.
Owner:XIAN NOVASTAR TECH
Bidirectional call method, device and system, electronic device and memory medium
InactiveCN107800893AReduce call costsReduce storage loadSpecial service for subscribersNetwork data managementComputer terminalSpeech sound
The invention provides a bidirectional call method, device and system, an electronic device and a memory medium. The bidirectional call method comprises the steps of receiving a bidirectional call request initiated by a calling terminal on an application, wherein the bidirectional call request comprises accounts of the calling terminal and a called terminal on the application; obtaining numbers ofthe calling terminal and the called terminal according to the accounts of the calling terminal and the called terminal on the application; querying available numbers in a number pool and allocating the available numbers to the calling terminal and the called terminal; initiating voice calls to the calling terminal and the called terminal through utilization of the available numbers and getting through the voice calls; and carrying out speech channel bridging on the calling terminal and the called terminal, and displaying the available numbers and carrying out a call by the calling terminal and the called terminal. According to the bidirectional call method and device provided by the invention, the privacy of the numbers can be ensured.
Owner:CTRIP TRAVEL NETWORK TECH SHANGHAI0
Salary payment system based on mobile Internet service application
ActiveCN105827612AValid identity verificationPrevent impersonationTransmissionProtocol authorisationService personnelMobile end
The invention relates to a salary payment system based on mobile Internet service application. The salary payment system comprises at least one mobile end and a service end. A watermark generation module of the service end, in response to successful examination of personal information, generates a watermark image which is added to a certificate image uploaded by a user and cannot be seen by human eyes; an image acquisition device connected with the mobile end and / or integrated into the mobile end acquires the watermark image on the certificate image provided by the user, and a watermark verification module identifies the watermark image so as to carry out identity verification; and a settlement module of the service end, in response to a settlement instruction of the mobile end, sends a service fee list to the mobile end, and the user confirms the service list and pays / receives a service fee at the mobile end in a mode of adding the invisible watermark image. According to the invention, service personnel can be prevented from forging the watermark image, the identity of the service personnel is identified, and the service personnel is prevented from taking salaries of others fraudulently.
Owner:四川省和信源创劳务有限公司
Intelligent control method for hoisting of containers and container hoisting system
The invention relates to the technical field of container yard management, in particular to an intelligent control method for hoisting of containers and a container hoisting system. The method comprises the steps that a control side obtains the type of a platform lorry which is to unload containers; when the type of the platform lorry which is to unload the containers is an FTR lock type, an inclinometer sensor starts to sense the inclination angle; when the inclination angle is larger than an angle preset value, a steelyard is started to detect the weight of the containers; and when the weight of the containers is larger than a weight preset value, the control side generates a hooking accident alarm. By means of combined detection for the inclination angle and the weight, FTR lock hookingaccidents are intelligently and accurately prevented and controlled on the occasion of hoisting of the containers, and dependency on personnel and indeterminacy are greatly lowered.
Owner:HANGZHOU YIGUAN TECH CO LTD +1
Embedded intelligent digital hard disk video recorder for ATM machine
ActiveCN101694734AReduce storage loadEasy accessComplete banking machinesTelevision systemsKey pressingVideocassette recorder
The invention discloses an embedded intelligent digital hard disk video recorder for an ATM machine, which comprises a main control module, a video frequency encoding processing module, a video frequency decoding processing module, a program memory module, a VGA module, a push button, an indicating lamp module, an alarm processing module, a digital liquid crystal screen and a series port management and network mouth output module, wherein the video frequency encoding processing module converses video frequency input analog signal into digital signals, video frequency data are encoded and compressed by self-made AVS standard of our nation, and are transmitted to the main control module after intelligently processing, and meanwhile, alarm signal data are intelligently processed through the embedded intelligent recognition algorithm in the video frequency encoding processing module, and analogy audio frequency signals after processing send network data to the client ends through the series port management and network mouth output module. The embedded intelligent digital hard disk video recorder can analyze original video frequency data in real time within 24 hours, identifies on-spot abnormal behaviors of ATM machines, achieves prior early warning, real time alarm and interlocking alarm, and has an intercommunication function, thereby achieving the real time communication of a remote center and an ATM machine spot.
Owner:BEIJING TELESOUND ELECTRONICS
Distributed global illumination calculating method based on photon mapping
ActiveCN106251394AReduce storage loadHigh speed3D-image renderingComputer graphics (images)Photon mapping
The invention discloses a distributed global illumination calculating method based on photon mapping. The method comprises a master node reads a scene file, scene data is divided and stored in a distributed manner, and according to emitted photons, the master node constructs a global photon graph and sets a photon overlap range; communication between the master node and slave nodes is constructed; the master node divides the whole screen pixel space into multiple blocks, each block serves as a rendering task, rendering tasks are distributed to the slave nodes in the clockwise sequence from inside to outside, and the slave node obtains the tasks distributed by the master node and adds the task into a queue, and determines task ownership of each coloring point in the block; the slave node traverses the global photon graph in the surrounding of each coloring point, and collects an indirect illumination color value obtained by photons, namely a rendering result; and each slave node returns the rendering result to the master node, the master node merges all the obtained rendering results according to the priority, and a rendering picture is generated. According to the invention, the rendering speed and effect are improved.
Owner:SHANDONG UNIV
Campus network authentication system log database construction method
ActiveCN107895039AReasonable storageReduce storage loadData switching networksSpecial data processing applicationsUser authenticationAuthentication system
The invention discloses a campus network authentication system log database construction method. The method comprises a service log database, an authentication log database, and a log backup database;the service log database is located on the first layer and is used to record the network operating status of the campus network authentication system during use; the authentication log database is located on the second layer and is used to record user authentication requests and authentication results. The main point is that when the authentication fails, the corresponding abnormal authenticationlog data is generated by analyzing the service log data according to different causes; the log backup database is located on the third layer and is used to periodically back up and delete log data inthe service log database and authentication log database, and generate file index information at the same time. The invention can make full use of the characteristics of the log data, effectively manage, store and back up the log data, and at the same time improve the retrieval efficiency of the log data.
Owner:HUAZHONG UNIV OF SCI & TECH
Data aggregation method based on time sequence intermediate state data structure
PendingCN111522846AReduce loadReduce the number of transfersDigital data information retrievalSpecial data processing applicationsTimestampTheoretical computer science
The invention discloses a data aggregation method based on a time sequence intermediate state data structure. The time sequence intermediate state data structure comprises a primary key, a feature keyand data, wherein the primary key is used for associating a specific service object in a service system; load balancing is carried out on storage and calculation of data, the feature keys are used for describing feature names of specific service objects, and the data is a numerical value formed after events in a service system are processed by the feature calculation system and a calculation method of the numerical value and is used for calculating an intermediate result during time sequence intermediate state data merging operation. According to the data aggregation method, based on a time sequence intermediate state data structure, events are converted into a plurality of parts of intermediate state data, the intermediate state data are stored in corresponding cache queues, then the intermediate state data are merged according to primary keys, feature keys and timestamps of the intermediate state data, and finally the intermediate state data are stored in a storage database. According to the method, the IO load of the system can be reduced, and the calculation load of the system is reduced and reasonably distributed.
Owner:ZHEJIANG BANGSUN TECH CO LTD
File compliance checking method and system
ActiveCN108449607AReduce storage loadImprove download speedTransmissionSelective content distributionTerminal equipmentOperating system
The invention provides a file compliance checking method and system. The method includes the following steps: an uploading step: obtaining an uploaded file and storing the file in an isolation area; acompliance confirmation step: confirming whether the currently uploaded file is compliant; if compliant, marking the uploaded file as a compliance file, and continuing to perform a storage step; andotherwise, prompting information that indicates the denial of uploading; and the storage step: uploading the compliance file to a cell server. According to the file compliance checking method providedby the invention, an uploaded video is divided into multiple small videos for compliance checking, and thus whether the small videos in the video meet the requirements can be judged. According to thefile compliance checking method provided by the invention, the multiple small videos are separately stored to different terminal devices, and thus the storage load in each terminal device can be alleviated, the download speed can also be increased, and cloud sharing can be further achieved.
Owner:SHANGHAI BAOSIGHT SOFTWARE CO LTD
Multi-person indoor positioning method based on block chain
InactiveCN110493727AEnsure dynamic consistencyImprove transmission securityParticular environment based servicesUser identity/authority verificationInformation transmissionInformation transfer
The invention provides a multi-person indoor positioning method based on a block chain, and the method comprises the following steps: S1, initialization: enabling a plurality of nodes to be arranged indoors, connecting the nodes to the same local area network, and setting the initial position of each node; S2, node active positioning: obtaining the position information of surrounding nodes througha private key, calculating the received signal intensity of the surrounding nodes, and finally calculating the self position; and S3, block chain recording: recording the positions of all nodes in the form of a block chain table every time the position information of the nodes is changed. Based on the block chain technology, each node has a non-tampered distributed blockchain table for recordingnode positions, the dynamic consistency of the block chain tables owned by the nodes is ensured, and the position information transmission security of the nodes is improved; the calculation and storage load of the central server is greatly reduced; historical position information can be quickly queried to obtain a moving track of a positioned node, and the positioning accuracy is improved.
Owner:SUZHOU JIANGHAI COMM DEV IND
Vehicle-mounted rail frequency shift signal rapid compression method based on compressed sensing
InactiveCN103716057AReduce complexityImprove real-time performanceCode conversionReconstruction methodEngineering
The invention discloses a vehicle-mounted rail frequency shift signal rapid compression method based on compressed sensing. The vehicle-mounted rail frequency shift signal rapid compression method is used for rapid compression of rail frequency shift signals in LKJs, DMSs and vehicle-mounted subjectivization cab signal systems on ordinary-speed trains and high-speed trains. The method includes the steps of firstly, calculating the sparsity of a vehicle-mounted rail frequency shift signal to be compressed, and determining whether to conduct sparsity conversion on the vehicle-mounted rail frequency shift signal to be compressed or not according to the sparsity; secondly, compressing a sparsity coefficient through a gauss random matrix to obtain compressed data; thirdly, effectively recovering the rail frequency shift signal just through a compressed sensing reconstruction method when uncompressing the compressed data. According to the method, the compression ratio of the rail frequency shift signal is high, the instantaneity is high, the storage loads of the vehicle-mounted LKJs, the vehicle-mounted DMSs and the vehicle-mounted cab signal systems can be effectively reduced, the bandwidth requirement of vehicle-ground wireless transmission of the vehicle-mounted rail frequency shift signal is lowered, the transmission time delay of vehicle-ground wireless transmission of the vehicle-mounted rail frequency shift signal is reduced, and the method has wide application prospects in high-speed rail vehicle-mounted signal real-time monitoring.
Owner:CHINA RAILWAYS CORPORATION +1
Information processing method and electronic device
PendingCN106161911AReduce power consumptionImprove practicalityTelevision system detailsImage enhancementInformation processingMotion parameter
The application discloses an information processing method which is applied to an electronic device. The method is provided to solve the technical problems that in the prior art, the electronic device is not able to give consideration of both data volume and power consumption when acquiring target images. The method comprises the following steps: detecting a first motion parameter value of an image acquisition unit of the electronic device in a current motion state, wherein the first motion parameter value is a value corresponding to the first motion parameter showing the current motion state of the image acquisition unit; determining that an acquisition frame rate corresponding to the first motion parameter value is the first acquisition frame rate according to a corresponding relation between the motion parameter value and the acquisition frame rate; and controlling the image acquisition unit to acquire images at the first acquisition frame rate. The invention also discloses a corresponding electronic device.
Owner:LENOVO (BEIJING) LTD
Dot-line feature selection method and system for binocular vision SLAM
ActiveCN111310772AImprove robustnessHigh precisionImage enhancementImage analysisGreedy algorithmFeature selection
The invention provides a dot-line feature selection method and system for binocular vision SLAM. The method comprises four main steps of abnormal dotted line feature removal based on RANSAC, error transfer model construction of dotted line features, dotted line feature selection based on an error transfer model and dotted line feature selection based on feature space uniform distribution. The method comprises the steps that firstly, the abnormal dotted line features are removed based on RANSAC; secondly, through supposing measurement error distribution of the image, solving a covariance matrixof a pose solving error introduced by the feature; then, based on the covariance matrix, screening out dot-line features with relatively large uncertainty by adopting a greedy algorithm; and finally,clustering the dotted line features in the artificial feature space, and enabling the dotted line features to be uniformly distributed in each class of the feature space. According to the method, abnormal points are screened out, and the precision of the visual SLAM system is improved by using fewer effective points.
Owner:SHANGHAI JIAO TONG UNIV
Image processing method, device and electronic device of driving recorder
InactiveCN108205829AReduce storage loadSave storage spaceImage enhancementTelevision system detailsImaging processingVideo record
The embodiment of the invention discloses an image processing method, device and electronic device of a driving recorder. The image processing method of the driving recorder comprises extracting a first image and a second image from a video recorded by a driving recorder, determining whether the first image is the same to the second image, and when the first image is the same to the second image,merging the first image and the second image. The first image and the second image extracted from the video recorded by a driving recorder are compared and when the first image is the same to the second image, the first image and the second image are merged so that the driving recorder cannot store the same images and thus the storage load is reduced, the storage space is saved and the cost is reduced.
Owner:FAFA AUTOMOBILE (CHINA) CO LTD
Cover image identification method
ActiveCN114359933AEasy to identifyImprove recognition efficiencyCharacter and pattern recognitionSample imageImage identification
The invention provides a cover image recognition method, which comprises the following steps: acquiring a cover image to be recognized, and detecting whether the cover image to be recognized belongs to a series of covers or not through a preset cover image library; if the to-be-identified cover picture belongs to a series of covers, obtaining corresponding series cover attributes; obtaining characteristic value region coordinates corresponding to the series of cover attributes, and performing characteristic value extraction on the to-be-identified cover picture according to the characteristic value region coordinates to obtain a cover picture characteristic value of the to-be-identified cover picture; obtaining sample picture feature values corresponding to the series of cover attributes from a preset cover feature value database, and matching the cover picture feature values with the sample picture feature values to obtain matching values of the cover picture feature values relative to the sample picture feature values; and determining the sample picture feature value with the highest corresponding matching value as a feature matching result, and determining the cover data of the cover picture to be identified according to the feature matching result. The identification efficiency and accuracy can be improved.
Owner:珠海读书郎软件科技有限公司
Pressure monitoring hemostasis device
PendingCN114642473AEasy to observe and operateHigh sensitivityDiagnosticsTourniquetsData informationEngineering
The invention relates to a pressure monitoring hemostasis device which comprises a hemostasis module used for reducing wound bleeding; the control module is used for regulating and controlling the hemostasis module, a binding unit arranged on the hemostasis module can be arranged on a binding area of a patient in a surrounding mode in a sleeving mode, and the inflation unit can inflate a hollow area of the binding unit so as to extrude the binding area of the patient in a mode of reducing wound bleeding of the patient; the working mode of the inflation unit is controlled by the control module, and the control module can judge the rationality of initial set parameters and / or the real-time condition of hemostasis operation according to set control logic on the basis of data stored in the first storage space, the second storage space and / or the third storage space of the processing unit. Therefore, the data information, at least including the inflation pressure, of the inflation unit is adjusted.
Owner:XUANWU HOSPITAL OF CAPITAL UNIV OF MEDICAL SCI
Embedded intelligent digital hard disk video recorder for ATM machine
ActiveCN101694734BReduce storage loadEasy accessComplete banking machinesTelevision systemsVideocassette recorderProcess module
The invention discloses an embedded intelligent digital hard disk video recorder for an ATM machine, which comprises a main control module, a video frequency encoding processing module, a video frequency decoding processing module, a program memory module, a VGA module, a push button, an indicating lamp module, an alarm processing module, a digital liquid crystal screen and a series port management and network mouth output module, wherein the video frequency encoding processing module converses video frequency input analog signal into digital signals, video frequency data are encoded and compressed by self-made AVS standard of our nation, and are transmitted to the main control module after intelligently processing, and meanwhile, alarm signal data are intelligently processed through the embedded intelligent recognition algorithm in the video frequency encoding processing module, and analogy audio frequency signals after processing send network data to the client ends through the series port management and network mouth output module. The embedded intelligent digital hard disk video recorder can analyze original video frequency data in real time within 24 hours, identifies on-spotabnormal behaviors of ATM machines, achieves prior early warning, real time alarm and interlocking alarm, and has an intercommunication function, thereby achieving the real time communication of a remote center and an ATM machine spot.
Owner:BEIJING TELESOUND ELECTRONICS
A multimedia file cloud storage platform and a redundant method using the cloud storage platform
InactiveCN106446263BImprove scalabilitySolve the problem of dynamic access to cloud storage platformDigital data information retrievalSpecial data processing applicationsInformation processingFile transmission
Owner:BEIHANG UNIV
A Fast Compression Method for Frequency-Shifted Signals of Vehicular Tracks Based on Compressive Sensing
InactiveCN103716057BReduce complexityImprove real-time performanceCode conversionReconstruction methodEngineering
Owner:CHINA RAILWAYS CORPORATION +1
Network authentication method, network device, terminal device and storage medium
ActiveCN110495198BImprove authentication efficiencyReduce storage loadSynchronisation arrangementUser identity/authority verificationWeb authenticationTerminal equipment
The present application provides a network authentication method, network equipment, terminal equipment and storage media. On the one hand, in this application, the network device generates a symmetric key by itself, and generates the correct serial number of the terminal device in real time through the first serial number. That is to say, in this application, the network device does not need to store the symmetric key and the correct serial number of the terminal device, but generates the symmetric key in real time and determines the correct serial number of the terminal device to be generated in real time. Therefore, the storage load of the HSS in the prior art can be reduced, and since the terminal device and the network device do not need to perform network authentication between the terminal device and the network device, the network authentication chain can be shortened, thereby improving the network authentication efficiency. On the other hand, in this application, the first network device acquires the identity of the terminal device, and based on this, determines the target network authentication method to be adopted between the network side device and the terminal device, and then sends instruction information to the second network device for instructing The target network authentication method. Therefore, the present application also solves the problem of notifying the network device which network authentication method is adopted.
Owner:HUAWEI INT
An embedded variable speed bearing fault diagnosis device
ActiveCN103868694BAdapt to the requirements of fault diagnosisFast operationMachine bearings testingDecompositionComputer module
The invention discloses an embedded variable-rotation-speed bearing fault diagnosis device. The device comprises a signal input module, a rotation speed adjustment module, a core computation module, a core control module and a power supply module. The device is of an FPGA+DSP+ARM structure and is structurally characterized in that an FPGA is adopted in the rotation speed adjustment module, vibration signals collected under a variable-rotation-speed condition are converted into uniform angle sampling results, and therefore the requirement for bearing fault diagnosis under the variable-rotation-speed condition is met; a DSP with a high computation speed and a large number of on-chip peripherals is adopted in the core computation module, and data analysis of the sampling results can be well completed; an ARM serves as the core of the core control module, and data analysis result diagnosis, data analysis result storage, data analysis result man-machine interaction and other functions can be completed with the assistance of peripheral hardware devices like an LCD touch screen; an empirical mode decomposition order spectrum analysis algorithm is adopted in the core computation module, it is the first time that the algorithm has been applied to embedded hardware, and bearing fault diagnosis accuracy and rapidity are improved.
Owner:SOUTHEAST UNIV
A Construction Method of Log Database of Campus Network Authentication System
ActiveCN107895039BRealize classification managementRealize reasonable storageData switching networksSpecial data processing applicationsEngineeringUser authentication
The invention discloses a campus network authentication system log database construction method. The method comprises a service log database, an authentication log database, and a log backup database;the service log database is located on the first layer and is used to record the network operating status of the campus network authentication system during use; the authentication log database is located on the second layer and is used to record user authentication requests and authentication results. The main point is that when the authentication fails, the corresponding abnormal authenticationlog data is generated by analyzing the service log data according to different causes; the log backup database is located on the third layer and is used to periodically back up and delete log data inthe service log database and authentication log database, and generate file index information at the same time. The invention can make full use of the characteristics of the log data, effectively manage, store and back up the log data, and at the same time improve the retrieval efficiency of the log data.
Owner:HUAZHONG UNIV OF SCI & TECH
Vehicle-mounted storage box
InactiveUS20170341587A1Low costImprove carrying capacityLuggage compartmentBlow moldingInterior space
Owner:ZHANG MINGHUA +1
Utilizing mram as a storage system for editing buffer area and editing buffer method
ActiveCN105630406BReduce fragmentationExtended service lifeInput/output to record carriersOperating systemNand flash memory
The present invention provides a storage system using an MRAM as an editing buffer. The storage system comprises an MRAM and a block storage device. The MRAM comprises an editing buffer, which is used for buffering file editing content; and the block storage device is used for storing file data. The present invention further provides an editing buffer method for the storage system using the MRAM as the editing buffer. The MRAM is used as the editing buffer, and when a user saves a file, only the editing buffer in the MRAM is updated without erasing and writing an NAND flash memory, so that the service life of the system can be prolonged, and the storage load of the system is reduced.
Owner:SHANGHAI CIYU INFORMATION TECH CO LTD
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