43results about How to "Reduce storage load" patented technology

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

This utility model relates to a vehicle-mounted storage box, which could be a new product in the field of auto parts. The vehicle-mounted storage box includes a bottom plate, a top plate, and side plates. The top plate and bottom plate are placed horizontally with a space between them, and connected with the side plates; thus, the inner space of the vehicle-mounted storage box is enclosed by the three kinds of plates. At least one of the bottom plate, top plate, and side plates is a hollow plate made through double-layer blow-molding process. This utility model, namely the vehicle-mounted storage box, adopts hollow plates, which bring lighter weight and higher bearing capability of the storage box while ensuring its structural strength, save material cost, reduce the load of the storage box on cars, and make it more convenient to install and remove the storage box.