30 results about "Data Access in Real Time" patented technology

The embodiment of the invention provides a distributed database system, which comprises storage nodes, an access control device and an unloading device, wherein the access control device is used for receiving access requests, extracting record identifiers from the access requests, searching for the storage nodes corresponding to the record identifiers from a storage comparison table, updating the accessing times of data records with the record identifiers, acquiring the corresponding data records from the storage nodes according to the record identifiers, and returning the acquired data records; and the unloading device is used for determining the accessing times according to the accessing times of each data record corresponding to the storage nodes in the storage comparison table, and when determining the storage nodes are overloaded according to the accessing times of the storage nodes by using a preset pressure algorithm, selecting the data records from the plurality of data records of the storage nodes according to a preset unloading strategy, unloading the selected data records into the other storage nodes which are not overloaded, and updating the storage comparison table. The invention also provides a data accessing method. The embodiment of the invention can satisfy the needs of real-time data accessing operation.

The invention discloses a large-grid distributed real-time database system and a data management method thereof. The system comprises a wide-area distributed real-time database storage system (1), a globally unique identifier analysis and service positioning system (2), a sub-system internal real-time data access system (3) and a distributed service agent (4), wherein the wide-area distributed real-time database storage system is used for storing real-time data in a wide-area distributed environment and efficiently indexing the real-time data by a globally unique identifier; the globally unique identifier analysis and service positioning system is used for analyzing the globally unique identifier and positioning a logical space in which the real-time data is accommodated and a corresponding service agent by using the globally unique identifier; the sub-system internal real-time data access system provides service for the network access of the real-time data in a sub-system on the basis of the wide-area distributed real-time database storage system; and the distributed service agent is connected with the globally unique identifier analysis and service positioning system and the sub-system internal real-time data access system and provides the service for cross-area and cross-system sharing and access of the real-time data. By the invention, the sharing and management of the mass real-time data in the wide-area distributed network environment can be realized.

A clustered computer system includes a shared data storage system, preferably a virtual shared disk (VSD) memory system, to which the computers in the cluster write data and from which the computers read data, using data access requests. The data access requests can be associated with deadlines, and individual storage devices in the shared storage system satisfy competing requests based on the deadlines of the requests. The deadlines can be updated and requests can be killed, to facilitate real time data access for, e.g., multimedia applications such as video on demand.

A clustered computer system includes a shared data storage system, preferably a virtual shared disk (VSD) memory system, to which the computers in the cluster write data and from which the computers read data, using data access requests. The data access requests can be associated with deadlines, and individual storage devices in the shared storage system satisfy competing requests based on the deadlines of the requests. The deadlines can be updated and requests can be killed, to facilitate real time data access for, e.g., multimedia applications such as video on demand.

The invention discloses a data center number checking system. The data center number checking system comprises a data security unit, an auditing unit, an API security management unit, a data archivingunit, an approval process unit, a performance monitoring unit, an identity authority management unit, a project management unit, a working area unit and a log unit which are connected with one another; the data security unit is used for performing data management during data checking; the auditing unit is used for recording the use behavior of the user when auditing that the user uses the data center number checking system; and the API security management unit is used for providing API creation, release, life cycle management, version control, monetization, governance and security functions.According to the invention, visibility of real-time data access can be provided for different sensitive information, different roles or visitors, and comprehensive management and monitoring of variousaccesses of a data center are realized.

Aiming at the problems that multiple processes simultaneously read and write the same shared memory data area, the data is frequently updated, and the kernel lock causes serious performance loss, theinvention provides a multi-process single-write multi-read lockless shared memory method and application, which avoids the use of locks through data structure design and atomic operation. When the data is updated, a piece of unused shared memory space is re-applied from the shared memory for the data to be updated, and the data is written into the memory space and the data key value relationship is modified; At the same time, the presence of the old data area ensures that it is recycled when no thread reads, Memory allocation for the next new or updated data, As that key-value relationship isupdate only after the data is update, any data area is not read and written at the same time, and the use of the lock can be completely avoided. The invention fully utilizes the atomic operation characteristic and completely avoids the use of the lock, thereby realizing the real-time data access capability with high performance when the data is updated at high frequency. The shared memory data access performance is improved.

The invention belongs to the technical field of communication network security, and discloses a multi-gateway authentication method and system, a storage medium, computer equipment and a terminal. The multi-gateway authentication method comprises the steps of: performing offline initialization; performing user registration; registering sensor nodes; logging in by a user; and carrying out authentication and key negotiation. According to the invention, a public key mechanism is introduced into a multi-gateway authentication scheme of the wireless sensor network through a rabin mechanism, mutual authentication and session key negotiation between a user and sensor equipment can be realized, and the privacy of the user is protected; as a public key mechanism is introduced, anonymity and non-traceability can be realized on the premise of ensuring bidirectional authentication, and the method has good forward security. Meanwhile, multiple attack modes such as replay attacks, simulation attacks and man-in-the-middle attacks can be resisted, and technical support can be provided for multi-gateway scenes needing real-time data access and cross-regional access such as industrial Internet of Things and smart medical treatment.

The invention provides a winery fire control real-time monitoring and alarming method and system based on the internet of things, and is used for solving the problem that an existing fire control technology is lack of a feedback mechanism. The method comprises the following steps: pre-receiving detecting information and running state information which are transmitted by bottom sensing equipment mounted in a winery by a front-end monitoring node, judging the detecting information for a first time, and starting fire control equipment which deals with abnormity if the detecting information is abnormal; acquiring the detecting information and the running state information which are forwarded by the front-end monitoring node and real-time video information transmitted by video monitoring equipment mounted in the winery by a server, storing the detecting information, the running state information and the real-time video information, and providing an address interface for real-time data access to a client side; and judging the detecting information for a second time and judging the running sate information for a first time, and if the judged result is abnormal, transmitting alarm information to the client side. In addition, the invention further provides a system of the internet of things for implementing the method. Fire control of the winery can be monitored comprehensively and remotely in real time.

The invention discloses an electric system real-time data processing method. The method includes the steps of conducting classification on real-time data in an electric system according to a plurality of preset topic types, generating data files corresponding to the plurality of topic types according to the classified real-time data, storing the data files, receiving a data access request sent by a data access request end, and returning the data files corresponding to the topic types to the data access request end. According to the method, when a real-time data service access demand is generated inside the electric system, no data access interface needs to be specially opened, the access burden of an electric system database is greatly lightened, and the stability of electric system operation is enhanced. According to the electric system real-time data processing method, the supporting capacity of the electric system for real-time data access is greatly improved, meanwhile, the electric system real-time data processing method is easy to achieve, and the cost of system development is reduced.

The invention relates to the technical field of automated production, in particular to a cloud service-based intelligent production system and an implementation method. A plurality of processes of production are defined as independent mobile warehouses, unique electronic labels start to be given to smallest package units of acceptable materials, and the information of the electronic labels is transmitted to a cloud ERP (enterprise resource planning) system; when the materials flow into the next mobile warehouse, the information of the electronic labels is read, moreover, the production action of the process is started, the information of the electronic labels is transmitted to the cloud ERP system when the process is complete and acceptable, the materials flow into the next mobile warehouse, and the cloud ERP system outputs real-time data by means of a display screen. The invention can acquire process information in time, intermediate delivery and warehousing acts do not exist, and thereby manpower and material resources are saved; the data of the cloud ERP system can be accessed, data processing requests and authorization can be implemented, and automated production and real-time data access and control can be realized.

The invention discloses a system for accessing a file type history data and a memory type real data in a control system based on an open type database interface for realizing data access to the file type history data and the memory type real data in the control system by way of accessing database. The system includes a data serve module, a data abstract module and an open type control system database interface. The invention also discloses a method for accessing the file type history data and the memory type real data in the control system based on the open type database interface. The system and method provided by the invention can stimulate the file type history data and the memory type real data in the control system into two data tables in a relationship database: a history data table and a real data table. The system and the method provided by the invention can realize data accessing to the file type history data and the memory type real data in the control system by way of accessing database that is convenient for accessing the file type history data and the memory type real data in the control system.

A method of real time data accessing and initializing commands via a wireless communication device includes the steps of: storing unified data in a unified data repository from corporate databases; logically configuring the unified data to leverage data-driven components and to prepare the unified data to be routed for a wireless user; distributing the unified data into requested data when a request is sent by the wireless user; establishing a wireless network for the wireless user, wherein the requested data is transmitted in secured data packet through the wireless network; and wireless transmitting the requested data to the wireless user through the wireless network by the wireless communication device, such that the wireless user is able to real time access the unified data and to initialize command by the wireless communication device through the wireless network.

The invention discloses a database system applied to a real-time big data scene. The database system applied to the real-time big data scene is characterized by comprising a data capturing module which is used for defining the range for capturing a data source, automatically capturing webpage data, performing content extraction and repetition exclusion, and performing context analysis; a feature database module which is used for storing Cookie data, advertisement position dada and linked data; a real-time database module which is used for performing indexing and sharding storage on the data in the feature database module; an advertisement putting module which is used for obtaining advertisement feature data from the real-time database module, comparing the advertisement feature data with the data in the feature database module, and finally determining whether to put advertisement to specific users and which advertisement is put to the users. The database system disclosed by the invention has the beneficial effects that as a three-level storage structure of internal memory, SSD and hard disk is adopted, the system not only provides high-speed real-time data access ability, but also can effectively cope with super-large scale data storage and has the disaster recovery ability.

The invention discloses a historical data collecting method applicable to a monitoring system. The collecting method comprises that a timer is used to periodically motivate a historical data collecting process according to the minimum sampling circle of the historical data; for a data point arrived the sampling circle, a real-time data accessing interface is called to obtain a real-time value as the historical data to be stored; after storing the historical data to a historical data library, the historical data collecting system adjusts time interval between two data processes according to the time movements needed in the historical data collecting process. The method can reduce sampling time delays caused by timer error and program execution, thereby improving precision of the sampling time. Furthermore, the method can automatically carrying out point compensation to adapt to sudden time change of the operation system too. Therefore, the method is applicable to historical tendency data collections in various technical fields, including intelligent building, rail transit, tunnel, mine, petrochemical industry and the like.

The open real-time database cross-process access technology proposed by the present invention adopts a microkernel architecture based on the POSIXIPC mechanism, and the real-time database system attached to it adopts a general pure object-oriented data description method independent of specific problem areas. The program implementation of the open real-time database cross-process access technology is based on the high-performance object-oriented real-time database ChRDB developed by the applicant. With the support of this technology, the ChRDB real-time database system can provide general and open real-time data access services (DDL, DML) to each user process running in the system, and support the efficient modification of each functional module and user process in the SCADA system And access the real-time data in the memory, so as to realize the interaction and logical linkage of various monitoring information.

The invention discloses a method for remotely synchronizing SQL data in real time. The method for remotely synchronizing the SQL data in real time comprises the steps of parsing increment logs of databases; conducting filtering processing on the parsed data; establishing links among the remote databases, and conducting delay optimization; distributing the data after being subjected to filtering processing into the corresponding remote databases according to demands. By means of the method, the high-latency data of the databases of multiple regions can be synchronized in real time, logic is developed conveniently, and the cross-region real-time data assess is facilitated.

The invention discloses a data sharing platform based on a block chain. The data sharing platform comprises a block chain data sharing platform, a node management unit and a plurality of node servers,the plurality of node servers are in interactive communication connection with the blockchain number sharing platform through a node management unit; the node server comprises a data real-time accessmodule and a data subscription access unit. The real-time access module is used for sending a data access request to the node management unit in real time. Data customization access sharing is achieved, a subscription mechanism is determined through a user, asynchronous data service is conducted, detection statistics is conducted on service node data flow, data access is conducted in the smooth data flow time period to obtain data and cache the data, then the data is fed back to the user when the user needs, the data flow access peak value is reduced, the efficiency of real-time data access sharing is improved, and efficient and extensible information acquisition of a user is realized.

The invention discloses a technique for storing a real-time database by using a similar cluster and supporting operating submission. Data are stored by using a data unit similar to a cluster in the real-time database so as to realize operating incremental submission of the real-time database. Operations can be independently performed respectively during submitting and the time overhead is comparable with the real-time data access, so a plurality of submitted operations can be performed among the real-time data accesses in turn without affecting the real-time access of the real-time database. The distributed data spaces are slightly more than the requirement of actual data spaces during primary submission so as to avoid space resource waste caused by a large amount of idle spaces distributed in advance during the primary submission. Meanwhile, only when new data spaces are assuredly needed or a large amount of data spaces are assuredly not used during submission, the spaces are integrally applied or released by using the data unit as a unit so as to avoid the problem that the used spaces cannot be reused.

The embodiment of the invention provides a distributed database system, which comprises storage nodes, an access control device and an unloading device, wherein the access control device is used for receiving access requests, extracting record identifiers from the access requests, searching for the storage nodes corresponding to the record identifiers from a storage comparison table, updating theaccessing times of data records with the record identifiers, acquiring the corresponding data records from the storage nodes according to the record identifiers, and returning the acquired data records; and the unloading device is used for determining the accessing times according to the accessing times of each data record corresponding to the storage nodes in the storage comparison table, and when determining the storage nodes are overloaded according to the accessing times of the storage nodes by using a preset pressure algorithm, selecting the data records from the plurality of data records of the storage nodes according to a preset unloading strategy, unloading the selected data records into the other storage nodes which are not overloaded, and updating the storage comparison table. The invention also provides a data accessing method. The embodiment of the invention can satisfy the needs of real-time data accessing operation.

A globally distributed virtual cache is configured to provide storage resources for users around the globe. A user of the virtual cache uses a computing device to access data that is stored in storage centers included within the virtual cache. Those storage centers may be surface-based, atmosphere-based, or space-based. When the user accesses the same data repeatedly, the virtual cache migrates that data to a storage center that is closer to the user, thereby reducing latencies associated with accessing that data. When the user attempts to communicate with another user also coupled to the virtual cache, the virtual buffers data that is exchanged between those users to facilitate real-time or near real-time communication between those users.

A distributed multi-user system for real time data access during cardiology procedures. The system includes an interactive computer network which can be used to simultaneously display data from a cardiology procedure on a plurality of devices and at a plurality of locations. The system is implemented through various replication topologies which allow the simultaneous access a cardiology study during the procedure. The study can be displayed at any of the plurality of locations, which may be local or remote, during the procedure.

The invention relates to a system and a method for finding and accessing database in real-time databases according to roll call. The method is characterized by comprising the following steps of: after receiving a request of a user, traversing all real-time databases as required; during each traversing, transmitting known measuring points and unknown measuring points which belong to a certain real-time database to the real-time database; returning information according to the real-time database; deleting measuring points which belong to the database from the unknown measuring points; and performing a next cycle till all measuring points are read successfully or all real-time databases are traversed. The method comprises a configuration file reading module, a measuring point position storing library, a scheduling module, a real-time data access module and an error code module. Due to the adoption of the system and the method, the roll call of all databases can be searched and accessed under the condition of roll call and on the premise of not influencing the efficiency. Points in the real-time databases can be accessed according to roll call on the premise of not influencing the efficiency.

Data synchronization method and device without redundant replication are used for providing real-time data accessing service and synchronizing valid data stored in a target storage apparatus to a backup storage apparatus at the same time. The target storage apparatus checks update statuses of the valid data. The valid data of the target storage apparatus is at least classified into a cold data group and a hot data group in accordance with the update statuses. In a first synchronization period, based on address information of the data block without valid data in the target storage apparatus, the data block without valid data is correspondingly established in the backup storage apparatus. At the first synchronization period, the valid data in the cold data group are synchronized from the target storage apparatus to the backup storage apparatus, and the valid data in the hot data group are not synchronized.

The invention aims to provide a real-time data acquisition system which solves the defects that the data entry quantity is very large, the personnel cost of an enterprise is increased and the like. The real-time data acquisition system comprises a material data acquisition system, a warehouse quality detection system, an information management system and an alarm system; the material data acquisition system, the warehouse quality detection system and the alarm system are respectively connected with the information management system; the warehouse quality detection system comprises cameras, sound-light-electricity sensors, temperature and humidity sensors, flame sensors, dust sensors and infrared sensors which are installed on a plurality of goods shelves in a warehouse. The information management system comprises a data storage unit and a server. The warehouse quality detection system and the information management system are connected through a wireless network, wherein the data storage unit and the server are connected through the wireless network. The beneficial effects of the invention are that the system achieves the timely collection of the process information through the RFID and other electronic tag technologies, and saves the manpower and material resources; and automatic production and real-time data access and control are achieved.

The invention discloses a block data-based intelligent sharing method and system. The method comprises the following steps of: sending a data request by a user through a user interface; converting thedata request into a system internal command format by a system and generating a user label from identity information of the user; extracting theme information from content of the data request of theuser to form a theme label; and constructing a skip matrix for predicting data requests of users according to user labels and the theme label, so as to read block data from a public block database toa cache area more correctly and efficiently. Through constructing a data sharing system which is capable of predicting data access trends of users through analyzing data access history routes of the users and is capable of dynamically and automatically optimizing a data scheduling mechanism according to real-time data access of the users, so that the problems caused by concurrent access of mass data under big data application environment is effectively solved.

A globally distributed virtual cache is configured to provide storage resources for users around the globe. A user of the virtual cache uses a computing device to access data that is stored in storage centers included within the virtual cache. Those storage centers may be surface-based, atmosphere-based, or space-based. When the user accesses the same data repeatedly, the virtual cache migrates that data to a storage center that is closer to the user, thereby reducing latencies associated with accessing that data. When the user attempts to communicate with another user also coupled to the virtual cache, the virtual cache buffers data that is exchanged between those users to facilitate real-time or near real-time communication between those users.

The invention discloses a method and a system for shielding measuring point code difference of a real-time database, equipment and a medium. According to the invention, a mapping relation is built between a standard code and a power station side measuring point code through building a code mapping database, so a power generation group business system can directly access the real-time data of a power station through the standard code, and transverse data exchange can also be carried out between power stations through standard code. According to the invention, the unification of data codes of various real-time databases of the power stations can be realized in a low-cost and low-risk manner, a set of standard real-time data access specifications is established, and standard transverse data exchange channels are also established between the power stations.

The invention discloses a household appliance function reservation control system comprising a plurality of household appliances, a central control machine and a mobile terminal. The central control machine is in signal connection with each household appliance; a control program and a timing program are installed in the central control machine; the central control machine is also wirelessly connected with the mobile terminal; and control software is arranged on the mobile terminal. The central control machine obtains the working state of each household electrical appliance through real-time data access and sends the working state information of each household electrical appliance to control software in the mobile terminal; the user obtains the working state information of each household electrical appliance through the control software of the mobile terminal and sends a specified household appliance function reservation command to the central control machine by the control software based on actual needs; after the central control machine receives the function reservation command, the timing program is started; and after arrival of the reservation time, the control program is started to carry out function control on the specified household appliance. When the system is applied, function reservation control can be performed on the household electrical appliance through the mobileterminal.

The invention discloses a large-grid distributed real-time database system and a data management method thereof. The system comprises a wide-area distributed real-time database storage system (1), a globally unique identifier analysis and service positioning system (2), a sub-system internal real-time data access system (3) and a distributed service agent (4), wherein the wide-area distributed real-time database storage system is used for storing real-time data in a wide-area distributed environment and efficiently indexing the real-time data by a globally unique identifier; the globally unique identifier analysis and service positioning system is used for analyzing the globally unique identifier and positioning a logical space in which the real-time data is accommodated and a corresponding service agent by using the globally unique identifier; the sub-system internal real-time data access system provides service for the network access of the real-time data in a sub-system on the basis of the wide-area distributed real-time database storage system; and the distributed service agent is connected with the globally unique identifier analysis and service positioning system and the sub-system internal real-time data access system and provides the service for cross-area and cross-system sharing and access of the real-time data. By the invention, the sharing and management of the mass real-time data in the wide-area distributed network environment can be realized.