36results about How to "Reduce single point of failure" patented technology

The invention provides a security strategy decomposition and verification system in a cloud storage environment. The system comprises a database, a strategy decomposition and verification module, a strategy evaluation module, a resource and access control strategy adjusting module, a sensitive information filtering word stock management module and an auditing module, wherein the strategy decomposition and verification module comprises a resource strategy decomposition and verification module and a coordination strategy decomposition and verification module; the coordination strategy decomposition and verification module comprises a coordination strategy decomposition and verification module and a coordination strategy decomposition and optimization module; and the resource and access control strategy adjusting module comprises a resource adjusting module and an access control strategy adjusting module. The system performs decomposition and verification on a security strategy in the cloud storage environment, so that the strategy and resources controlled by the strategy can be stored at a cloud terminal at the same time, and simultaneously, the system ensures that sensitive information in an access control strategy of a service party participating in coordination is not leaked. The system has the characteristics of high security, high execution efficiency and high expansibility.

The invention provides a load balancing device and method. The method comprises the following steps: monitoring each server through a distributed service framework cluster, receiving an access request of a client, sending a server list of corresponding servers to the client according to the access request, and accessing the server list to the corresponding servers according to the server list. By implementation of the load balancing device and method provided by the invention, single-point faults can be reduced by the distributed service framework cluster, the cost necessary for maintenance is also reduced, in addition, the distributed service framework cluster requires no dynamic configuration of related information, and thus saving a lot of time.

The invention discloses a method and a device for synchronizing EPG (Error Pattern Generator) files in an IPTV (Internet Protocol Television). The method comprises the steps of: sending a synchronization request to a client terminal by an EPG; requesting the ID of the newest index file to an index server by the client terminal; returning the ID of the index file and a node list to the client terminal by the server; requesting data to other nodes by the client terminal, and downloading the index file; analyzing the index file by the client terminal, and requesting data to other nodes and downloading the file; and informing the EPG after the downloading of the client terminal. In the invention, the synchronization of the file and a catalogue is completed by the index file, the number of the files serving for other nodes is controlled by the index file, the synchronization speed is accelerated by a P2P (peer to peer) technology, the load of the server is recued, and the single-point fault is reduced.

The present invention provides a network file system and method based on P2P technology, which integrates the file storage mode of P2P and C / S structure, stores all file contents in each P2P client, and stores the file directory area and metadata in a file supporting P2P On the server with advanced technology, when a P2P client needs to access a file, it first obtains the metadata and other attribute information of the file from the local cache or the server that supports P2P technology, and then searches and accesses the file data in a P2P manner, adding network file The scalability of the system storage is suitable for the storage needs of large-scale clients; the file content data is distributed and stored in the entire network file system, and the server is no longer an access hotspot, which greatly reduces the server pressure and the possibility of single point failure; and utilizes P2P Data transmission by means of data transfer, providing high-speed access to file data.

The invention provides a DNS safety system and a fault processing method thereof. The DNS safety system comprises at least one client end, a root node, an authorization information database and a virtual root node. The at least one client end is configured to initiate a DNS request. The root node is configured to provide authorization information for the DNS request. The authorization information database is configured to store all DNS requests and the corresponding authorization information in a specific area. The virtual root node is configured to call the corresponding authorization information from the authorization information database to provide analysis services for the corresponding client end when DNS analysis breakdown happens to the root node. The DNS safety system and the fault processing method thereof can improve the safety and the stability of DNS analysis.

The invention discloses a network video monitor data flow storage system which comprises a client unit, a service terminal unit and a physical disk unit. A client program of the client unit and a service terminal program of the service terminal unit carry out media stream data transmission through a standard API interface, and the client unit and the service terminal unit are embedded into a disk array cabinet for operation. The client unit is responsible for receiving data, sending the data to the service terminal unit after processing, requesting data to the service terminal unit, and sending the data outward after parsing. The service terminal unit is responsible for writing the data sent by the client unit into the physical disk unit in the disk array cabinet according to a priority strategy, inquiring needed data in the physical disk unit, and sending the data to the client unit. According to the storage system in the invention, a single point fault in a data transmission process can be effectively reduced, and a data transmission mode becomes simpler and is easier to control and maintain.

Provided are a method and a device for cloud service configuration, a storage medium, and a cloud service system, used to solve technical problems that existing cloud service configuration managementis low in reliability and low in efficiency. The method is applied in a configuration issuing device in the cloud service system. The configuration issuing device and a monitoring execution device inthe cloud service system are nodes in a block chain system. The method comprises: the configuration issuing device obtaining configuration information, writing the configuration information into a block chain, the configuration information being used to execute corresponding cloud service configuration operation when the monitoring execution device monitors that the configuration information exists in the block chain.

The invention relates to an index-based remote cloud data synchronizing method. Data occupying a larger space is stored in fewer servers in a cloud system, indexes of summarization information of all data are backed up on each server, a user judges whether cloud data summarization information which is interested by the user is stored in the system through searching the indexes, when the user needs to download resources in a cloud storage system, a server connected with the user firstly sends a synchronous request sent by the server storing the resources in the cloud system, and after synchronization is completed, the user downloads the resources from the server. According to the index-based remote cloud data synchronizing method, the cloud data in the cloud storage system is more conveniently downloaded by the user in each place, resource synchronization is blindly avoided being carried out by the cloud storage system, the quantity of the servers during cloud storage is greatly reduced, system building cost is lowered, one-point failures and property bottleneck caused by the servers in the system are reduced, data transmission links are reduced, system performance property and efficiency are improved, and efficient and stable operation of the whole system is ensured.

The invention discloses a video monitoring method and a video monitoring system under a large-scale data concurrency environment. The system comprises a video collection unit comprising an industrial control machine and at least one camera, wherein the camera is used for shooting a video, and the industrial control machine is used for collecting video data and forwarding the data to a server; a monitoring center comprising the server, a load measurer, a load balancer and a scheduling dispenser connected in sequence; and a client used for sending requests and subscribed messages to the server, and receiving video data. According to the method and the system provided by the invention, the industrial control machine participates into forwarding, so that the load of the server is further relieved. Servers mutually serve as backups for one another, so that occurrence of a single point failure is reduced, and higher reliability is provided.

The invention relates to the technical field of manufacturing of integrated circuit chips, in particular to a computer cluster system. The method for automatically collecting and analyzing the computer cluster node information comprises the following steps: s1, acquiring all node information in a computer cluster; s2, storing node information; s3, acquiring undetected nodes from the stored node information, performing redundancy analysis on the nodes according to a corresponding detection strategy, and generating an analysis result; s4, repeating the step s3 till redundancy analysis of all the nodes is finished; and s5, judging whether a single-point risk exists in any node or not according to an analysis result, and generating a detection result. Through adoption of the method and the system, the workload of a system administrator can be effectively lowered; errors and omissions of manual input are avoided; a data basis is laid for monitoring analysis of a cluster platform; a risk of single-point failure occurring in the cluster system is lowered; and the reliability of the system is improved.

The invention discloses a data update method, a device, a data calling side and a data update system. The method is applicable to a ZooKeeper colony and comprises the steps that whether data under each path nose in the colony is updated is monitored; and when the data under a path node is updated, an update notification is sent to the data calling side corresponding to the path node, so the data calling side can acquire latest data from the path node. Through application of the invention, a function of dynamically obtaining the latest data can be achieved.

The present invention provides a capacitor voltage conversion circuit. The capacitor voltage conversion circuit comprises CPU unit, a square-wave excitation signal generation circuit, a detected capacitor (C), a synchronous digital detecting circuit, a time-sharing integrating circuit and a low-pass RC filter circuit. The CPU unit is configured to generate synchronous excitation signals and logiccontrol signals; the square-wave excitation signal generation circuit is configured to take the synchronous excitation signals as triggering signals to convert a reference level as square-wave excitation signal output configured to be applied to the detected capacitor (C) to excite the detected capacitor (C); the synchronous digital detecting circuit is connected with a returning end of the detected capacitor (C) to take the synchronous excitation signals as triggering signals to detect returning signals of the detected capacitor (C) to integration half-wave signals; and the time-sharing integrating circuit is configured to take the synchronous excitation signals as triggering signals to perform time sharing integration of the integration half-wave signals to output a direct current level.The capacitor voltage conversion circuit solves the technical problems that the capacitor voltage conversion circuit is complex in structure, limited in application range, large in error and low in detection sensitivity.

The invention relates to a rapid persistence method based on CAD (computer-aided design), which comprises the following steps: (1) determining the total number N of nodes in a distributed system cluster, letting F = (N-1) / 2, setting the number of erasure codes as k, and setting the value of a selection parameter x; (2) judging whether the number of response nodes recently received by the Leader node in the cluster is greater than or equal to F, and if so, executing the step (3); (3) judging whether the number of response nodes recently received by the Leader node in the cluster is greater than or equal to F + k; if the number of response nodes recently received by the Leader node is larger than or equal to F + k, copying is carried out according to an F-CAD consistency protocol until all data are persistently written into F + 1 + x nodes, the log entry is submitted, and next round of copying is executed; and if the number of response nodes received by the Leader node recently is smaller than F + k, performing consistent copying on the system according to a CAD protocol until full data is persistently written into at least F + 1 + 0 nodes, submitting the log entry, and executing the next round of copying. The method can reduce the probability of single-point failure.

The invention relates to a contribution type group key management method in security group communication. The method comprises signature and authentication of group members, own contribution of the group members to generation and management of keys, and independence and full forward security of the keys. A key tree is organized into a tree topology structure including a main tree, a join tree andan exit tree; the join tree is used as a cache region for accepting new members; and when the join tree reaches a certain height or members exit, members in the join tree are moved and merged into themain tree in batches. New members joins to a root part of the join tree, so that time complexity when the members join is reduced, and an approximate progressive upper bound of member join time costis reduced to O(1). when members exit, the exit tree is introduced, and the exiting members are moved to the exit tree, so that average cost is reduced, and an approximate progressive upper bound is reduced to O(1). According to the invention, when secret communication is carried out among mobile group equipment in a network environment, security communication among the group equipment can be ensured; calculation and communication energy consumption is relatively low; and the contribution type group key management method has good flexibility, security and practicality.

The invention relates to an electric seat controller with a protection function, and solves the defects in the prior art. The technical scheme is that the electric seat controller comprises a power module, a processor module, a motor driving module, a signal amplification module, a motor hardware protection module, a motor position detection module, a switch module, a CAN communication module anda current sampling module. The processor module is used for receiving and processing a switching control signal, a communication signal and a diagnosis signal, and the motor position detection moduleis used for acquiring motor motion position information and detecting motor stalling. The motor driving module is used for controlling the working state of a seat motor; the current sampling module converts a current signal of the motor into a voltage signal; the signal amplification module amplifies a voltage signal of the motor, so that the voltage signal can be acquired and processed by the processor; and the motor hardware protection module automatically controls the motor to stop when the acquired voltage of the motor is greater than a protection threshold designed by hardware. Two protection circuit schemes of the motor hardware protection module and the signal amplification module are adopted, which achieves the complementation on functions. Moreover, the failure of one protection circuit cannot cause the failure of the other protection circuit, and the single-point failure modes are reduced.

The invention provides a method for realizing interconnection of coverage networks; the method comprises the following steps: a first node in a first coverage network selects a second node which is the only one corresponding to the first node in a second coverage network as the brother node; the first node receives the route request and when the destination network of the route request is confirmed as the second coverage network, the information of the second node is searched according to the route request; and then the route request is sent to the second node according to the information of the second node; when the second node is judged not to be the destination request, the route request is sent to the destination node. The technical proposal of the invention can show that if the request distribution sent by the user terminal is even, every node can receive the route request and the routes for sending the route request to the destination node are different; therefore, the load of every node can be ensured to be balanced and the probability of single-point failure can be reduced and the stability of the coverage network can be improved.

The invention provides a motor control drive circuit with redundant isolation drive. PWM signals output by a control chip are processed to generate complementary PWM signals with dead zones. Each PWMsignal is output through two optical coupler isolation channels connected in parallel. The control signals output in parallel output corresponding power tube switching signals through a drive chip, sodrive control over a motor is achieved. The circuit is simple in structure, low in cost, short in response time, wide in application range and convenient for productization application.

The invention discloses a host-identifier-based method for routing protocol supporting of terminal micro-mobility under a planar routing environment in an integrated network access subnetwork. The method comprises the steps: moving an access terminal to a new access router and registering a host-position relation for the access router; appointing an access router to an access network by the new access router according to a compatible Hash algorithm to update the host-position relation; updating an original host-position relation for an old access router by the appointed access router; and informing a source access router of the updated host-position relation by the old access router when the old access router receives data communication initiated by other access routers. A flooding mechanism is utilized among access routers so as to maintain a topological database among the routers, and a proper bottom routing protocol is utilized to maintain the routing accessibility among the access routers.

The invention relates to a plug-in control method and a plug-in control device for an animation production team. The method comprises the following steps that: 1) a client sends connection request information to a server; 2) the server tries to accept the connection of the client; 3) the animation production team judges whether the connection is successful, if so, executes the step 5), otherwise, executes the step 4); 4) when the current server fails in the connection, the client searches whether other available servers exist, if so, the step 2) is repeated, otherwise, the request fails; 5) the server checks a data source load condition, selects a data source with a low load as a connection data source; and the like. The device comprises a server cluster, a switchboard and the client, wherein the server cluster is connected with the client through the switchboard. Compared with the prior art, the invention has the advantages that: in a large-sized team, great convenience is supplied to complicated application with a plurality of parallel items and a plurality of coexisting software environments, and the like.

The invention discloses a code stream scheduling method and device in a hybrid network mode, being characterized in that under the condition that a first client establishes a connection with an Internet of Things device through a second server, if a central server receives the request of the second client, a first scheduling factor is calculated according to parameters carried by a keep-alive message of the first client and the load condition of the first server; when the first scheduling factor is smaller than a preset first threshold, the first client is taken as a second server, and the second client is notified to establish a connection with the first client, so that the first client forwards data to the second client through the connection established with the second client; and whenthe network environment of the first client or the second client changes, a second scheduling factor is calculated, and the connection of the second client is switched. Compared with the prior art, the code stream scheduling method can be compatible with more network modes, balances the load of the whole network, prevents each server from being overloaded due to excessive access, and ensures the stability of network services.

The invention discloses a hot standby method, system and device of an aggregation server and a storage medium. The method comprises the following steps: receiving a service message sent by an application terminal; determining whether the service message has a historical forwarding server or not according to the keyword of the service message; if the historical forwarding server exists and the communication tunnel connected with the historical forwarding server survives, selecting the historical forwarding server as a current forwarding server; otherwise, forwarding the service message to the aggregation server cluster, and selecting the server of the first response service message as the current server. According to the embodiment of the invention, the complexity of the hot standby calculation method can be reduced, and the server of which the connected link is closer to the final target service or the load is lighter can be selected as the current forwarding server, so that the single-point fault of the aggregation server can be reduced and the stability of hot standby can be improved under the condition of ensuring the forwarding efficiency. The embodiment of the invention can be widely applied to the technical field of communication.

The invention discloses a parking space guiding and reverse vehicle searching method based on an AI mobile robot. The parking space guiding and reverse vehicle searching method comprises the following steps that a garage map is initialized; the mobile robot ranks from the head end and the tail end of the guide rail route and determines a vehicle searching area of the mobile robot; all the mobile robots wander from the head end to the tail end in respective vehicle searching areas according to the vehicle searching rules and execute global vehicle searching; an AI license plate recognition technology is applied, and a mobile robot performs motion detection and extracts license plates and vehicle feature state information of all vehicles; operations of comparing with the information of the parking space map database, writing and updating are conducted, and the current data of the system is updated; and waiting for the task is conducted, whether the vehicle enters and exits is judged, and license plate vehicle searching action is executed until the vehicle searching task is completed. The invention further discloses a parking space guiding and reverse vehicle searching system and device based on the AI mobile robot. The AI intelligent recognition technology, the path planning algorithm, the scheduling algorithm and the mobile robot are fused, the recognition mode is intelligent and accurate, and single-point faults are few.

The invention discloses a dual-machine cold backup shared storage system and method based on physical isolation. The device comprises a host A and a host B, wherein the host A and the host B are integrated in the case; two main storage devices are respectively arranged in the host A and the host B; An embedded computer main control board and a bus switcher are provided. The bus switcher in the host A and the bus switcher in the host B are connected through the storage bus (2), when a regular computer accesses two storage devices at the same time, and when one storage device breaks down, the storage device is removed by the regular computer, and data are accessed from the other storage device at the same time, so that redundant backup of the data is realized. The method can ensure that theembedded computer system does not cause system crash or important data loss due to damage of a single storage device under the long-term working condition.