34results about How to "Implement failure recovery" patented technology

The invention provides a layered exchange and control method for real-time monitoring system data by power dispatching. A CIM / XML (common information module) / (extensible markup language) interface, a CIM / E interface and other models of the electric power subsystems are processed and combined to establish a device model of the large power grid, therefore, perfect interaction of various application data including SCADA (supervisory control and data acquisition) real-time data, WAMS (wide area measurement system) data, EMS (enhanced message service) advanced application data and dynamic security analysis warning information can be realized, and power system control commands among the systems can be smoothly transmitted and executed. A data acquisition and exchange function can support multiple communication protocols, multi-application, multi-type and large amounts of data, satisfy the real-time requirements of all transmission environments, and provide comprehensive multi-scale real-time operation information of the power grid for other application analysis systems. A close integration mode is used to realize application integration and each subsystem and application can be monitored and managed, so a uniform access interface and a man-machine interface can be ensured to provide for each application system.

The invention discloses a method for fast constructing Hadoop cluster based on container cloud technology. The method comprises the following steps: (1) determining selected physical server number according to actual demand, regarding the entire selected physical server as a cluster, and assigning a master node of the cluster, and distributing actual deployment nodes, namely as the slave node; (2) installing a CentOS7 operation system for each physical server in the cluster; (3) installing and starting a container orchestration service Kubernetes and the network service Flannel on each master node of the cluster by use of a yuminstall command; (4) installing MySQL database, a mirror image warehouse service and management portal; (5) logging a management portal interface by use of an administrator account, establishing a user; and logging the management user by use of the established user, creating the cluster environment of the user, and constructing a Hadoop cluster.

The invention relates to a satellite-borne double-CAN (Controller Area Network) bus node failure self-restoration system. Interrupt signals of two CAN controllers based on a double-CAN bus communication node are processed by adopting hardware logic and operation, on the one hand, the output signals are transmitted to a processor for receiving interruption of data, and on the other hand, the output signals are used for generating pulse signals so as to clear a failure monitoring hardware watchdog; when the watchdog does not receive a watchdog clearing signal in the setting time, hard restoration signals are generated to restore the two CAN controllers, and simultaneously, a failure alarm interruption signal is generated to inform the processor to initialize the two CAN controllers so as tofinish the failure restoration of the CAN communication node, therefore, the reliably and the real-time problems of failure detection are solved, meanwhile, the automatic removal of failure is ensured.

The invention relates to a power distribution network fault recovery method with consideration of the uncertainty of fault recovery time. The method comprises the following steps: according to the probability density function of the fault recovery time of the distribution network, obtaining two best power distribution network fault recovery times and the probabilities for the two best power distribution network fault recovery times respectively, or rather a first power distribution network fault recovery time and its probability and a second power distribution network fault recovery time and its probability; using the first power distribution network fault recovery time to establish a power distribution network fault recovery model and using the best solution of the power distribution network fault recovery model as the power distribution network fault recovery scheme; and using the second power distribution network fault recovery time to optimize the power distribution network fault recovery scheme. The method proposed by the invention adopts a Wasserstein distance method to determine the fault recovery times and through the utilization of the fault recovery times, proper adjustment can be made to the fault recovery scheme so as to realize the best power supply recovery to an area out of power and to increase the economy and security for power grid operations.

The embodiment of the invention provides a method and equipment for many-one reducibility scene multicast data transmission. Data transmission stability can be well improved. The method comprises the steps that provider periphery PE equipment receives first multicast routing information sent by first provider equipment and second multicast routing information sent by second P equipment; the PE equipment carries out route optimization on the first multicast routing information and the second multicast routing information, and a route corresponding to the first multicast routing information is determined as mainly-used multicast routing; the PE equipment determines first identification according to the first multicast routing information corresponding to the mainly-used multicast routing, and the first identification is used for identifying the first P equipment as a main root node; and the PE equipment sends the multicast routing information corresponding to the PE equipment to the first P equipment and the second P equipment respectively.

The invention discloses an FPGA (field programmable gate array)-based failure recovery method. The FPGA-based failure recovery method can be used for monitoring the working condition of an FPGA after power on; if the phenomenon that logic loading fails or breaks down and the like occurs, the logic is reset by a hardware watchdog; if software embedded into the FPGA is loaded unsuccessfully or breaks down, the software is reset through logic software so as to realize failure recovery of the module, and moreover, operations, such as burning and configuration, on the FPGA are not influenced. The method is suitable for the conditions that failure recovery is needed, so that the work reliability is improved; moreover, the method has a general function, and can be suitable for various Xilinx FPGA-based failure recovery conditions.

The invention relates to an embedded system fault self-recovery method, terminal equipment and a storage medium, and the method comprises the following steps: S1, adding a system backup area, an application backup area and a configuration information area in a partition of an equipment disk; S2, starting a bootstrap program and increasing the fault frequency progressively; S3, judging whether a system fault frequency mark exceeds a threshold value or not; if so, entering S4, and if not, entering S5; S4, enabling the system to enter a recovery mode; S5, judging whether the fault frequency of the system application exceeds a threshold value or not, if so, entering S6, and if not, entering S7; S6, recovering the application, and returning to S2; S7, normally starting the system, and resettingthe fault frequency of the system; S8, judging whether fault recovery needs to be carried out on a system component or an application program or not; if so, entering S9, and if not, entering S10; S9,recovering the application or the component, and returning to the step S2; and S10, finishing starting, and running the application program. According to the invention, self-repairing can be carriedout when the equipment has a system fault, and continuous operation of the equipment is ensured.

The invention provides a method and a device for achieving an FTP server based on an Apache FtpServer. Users can be managed in a precise manner through configuration, historically uploaded files can be filed to achieve fault recovery and it can be achieved that files are issued through broadcasting and requirements of multiuse downloading are met. The method comprises steps of finishing configuration information and storing the information into a database; after monitoring that a user event occurs, executing corresponding operation according to configuration information read from the database; and storing information of the user event and processes and results of the operation into a log list, thereby facilitating further analysis.

An embodiment of the present application discloses a failure recovery method and a device for a first device. The method includes: recording an operation command generated by operating a target software, and sending the operation command to a second device; If the target software fails, the operation command sent by the second device is received and executed to recover the target software. The method comprises: acquiring an operation command sent by a first device, the operation command being a command generated by operating target software in the first device; if the target software fails, the operation command is sent to the first device to enable the first device to recover the target software by executing the operation command.

The invention discloses a storage node recovery method and device, equipment and a storage medium, and the method comprises the steps: caching at least one redo log of a storage node as a playback log; when it is determined that the storage node fails, determining at least one archiving task according to the playback log; and if the communication of the storage node is recovered, sending each archiving task to the storage node to enable the storage node to execute an operation corresponding to the archiving task to achieve data recovery. According to the embodiment of the invention, the archiving task is determined through the cached playback log when the storage node fails, so that the redo log searching time in the data recovery process of the storage node is shortened, the recovery efficiency of the storage node is improved, and the robustness of the distributed database based on the storage node can be improved.

The invention provides a TWDM-PON system with multi-point fault protection capability, fault isolation is effectively realized; the condition that the whole body is started is avoided; More importantly, more importantly, the structure is simple, The method comprises the following steps: designing an internal structure of a ring network and a remote node RN so that the network can realize fault recovery even under the condition that only one remote node RN can work normally; N: realizing feeder optical fiber Comprehensive protection, the reliability of the network is greatly improved; Besides,directly transmitting the signal to the target optical network unit ONU along the star network. Compared with an annular structure, no other nodes are needed, the transmission delay and the link lossare reduced, the network unit ONU adopts a bus type topological structure, the working optical fiber and the protection optical fiber transmit signals at the same time, the coupler instead of the optical switch is used along the way, the ONU is automatically protected without switching, and meanwhile the network cost is reduced.

The invention provides a multi-layer network fault recovery method, which obtains multi-layer network fault information in real time; determines the fault recovery initiation layer according to the fault information; performs intra-layer fault recovery; performs inter-layer fault recovery; thereby realizing multi-layer network fault recovery. Layer network failure recovery. The present invention is used to realize the coordination between integrated control of multi-layer transmission and multi-layer network fault recovery strategies, which can eliminate the incoordination of recovery actions caused by lack of information interaction mechanism between multi-layer fault recovery strategies and Many disadvantages caused by this improve the multi-layer network fault recovery capability.

The invention belongs to the on-board computer technology field, to be specific, relates to a safety-critical software health management method. The safety-critical software health management method comprises the following steps: 1) a safety-critical software health monitoring table can be created; 2) a safety-critical software diagnosis criteria table can be created; 3) a safety-critical software health management decision blueprint can be created; 4) whether the safety-critical software is faulted can be determined by querying a health monitoring table; 5) a fault phenomenon can be determined according to the health diagnosis criteria table; 6) the fault treatment can be carried out according to the fault treatment rules made by the health management decision blueprint. The safety-critical software health management method is advantageous in that the fault isolation and the fault recovery of the safety-critical software can be realized by creating the health monitoring table, the health diagnosis criteria table, and the health management decision blueprint, and therefore the problems such as airplane crash, casualties, property damages, and severe environmental damages, which are possibly caused by the incorrect function or the failure of the safety-critical software, can be prevented.

The invention discloses a hot plug system and a hot plug method for a field test bus function module. The hot plug system comprises a controller, wherein the controller is connected with a state monitoring line between the controller and an MCU by means of a field test bus; the controller transmits a control signal for switching on MOSFET to a MOSFET driving module by means of the field test bus;a source electrode voltage output end of the MOSFET driving module is connected with a source electrode of the MOSFET; a gate voltage output end of the MOSFET driving module is connected with a gate electrode of the MOSFET; a drain electrode of the MOSFET supplies power to the field test bus function module; an output voltage monitoring module monitors a power supply voltage of the field test busfunction module and feeds back the power supply voltage to the MCU; and an input current monitoring module detects an input current input to the source electrode of the MOSFET by means of the field test bus and feeds back the input current to the MCU. Compared with a traditional hot plug method, the hot plug system and the hot plug method have the advantages of being flexible in parameter setting,small in size, low in cost, good in safety and stability and the like.

The application provides a smart grid self-healing method and device. The power supply of the smart grid is a distributed power supply. The method is applied to the first metering device. The method includes: obtaining the power supply information data table of each surrounding metering device in real time; Fault indication information, to obtain the first detection result, the fault indication information is used to indicate that the adjacent equipment of the first metering device has failed; when the first detection result indicates that the fault indication information is received, according to the obtained power supply information data of each surrounding measurement device The table determines the optimal power supply source and power supply path for grid fault recovery. When a fault occurs at one or more points in the power grid, the smart grid self-healing method and device provided by this application do not need to manually collect fault information for analysis and judgment and formulate a recovery plan, and the adjacent points of the fault point can automatically find the best power supply The power supply and power supply path quickly achieve grid fault recovery, and the fault recovery time is greatly shortened compared with the existing technology.

The invention discloses a fault recovery method and system. The method comprises the following steps: a service gateway SGW in a rail transit area detects whether a public data gateway PGW linked with the SGW is abnormal in real time; and when it is detected that the PGW is abnormal, the SGW triggers a corresponding mobility management entity MME to bind a static IP address of user equipment UE with a local PGW, wherein the UE is UE attached to the abnormal PGW in the coverage area of the SGW, and the MME is an MME serving the UE at present. By adoption of the fault recovery method and system disclosed by the invention, the fault recovery in a rail transit line transfer scene can be realized.

The invention discloses a low-cost cloud host intelligent fault instantaneous switching method. It includes the following steps: (a) the user sends a service request to the cloud management platform; (b) the cloud management platform sends the service request to a cloud host, and then puts the virtual disk of the cloud host in the cloud storage system; (c) When the cloud host fails, the cloud management platform will pass the configuration information of the faulty cloud host to a new host; (d) the new host is connected to the cloud storage system, and is searched and connected to the cloud storage system according to the configuration information of the faulty cloud host. The virtual disk of the failed cloud host; (e) Create a new virtual machine on the new host; (f) The cloud management platform points the access routing information from the failed cloud host to the newly created virtual machine to complete the failover. The invention has high utilization rate of resources, fast fault recovery speed, automatic intelligent control, strong reliability, unlimited number of fault recovery without manual intervention, and strong disaster tolerance.

The invention discloses a switch RSTP convergence enhancement method, and the method comprises the steps that a link fault detection module of the switch configures local link fault detection configuration information, is linked with an RSTP module of the switch, and carries out link fault detection negotiation with an opposite-end switch according to the local link fault detection configuration information to detect communication link fault information; the communication link fault information is quickly notified to other switches in the network through a RUN message, the RUN message packaged with the communication link fault information and sent by other switches is received at the same time, and the RUN message is analyzed to quickly complete the corresponding processing of the RSTP protocol so as to achieve the purpose of quickly switching the link and further realize fault recovery. According to the method, the link state problem and the possible link single-pass problem can be sensed in time, the whole network and a processing mechanism are quickly notified through the RUN message, the convergence of the whole network and the link switching time are accelerated, and the RSTP protocol convergence time of the switch is improved from the second level to the millisecond level.

The method for switching stream media servers (SMS) includes following steps: S102, when determining the fault occurs at current SMS, set-top box reports information of fault to fault monitor server;S104, after receiving information of fault, the fault monitor server assigns valid SMS for the set-top box, and sends associated information of valid SMS to the set-top box: S106, based on associatedinformation of valid SMS, the set-top box builds connection with the valid SMS. In the invention, when abnormity occurs at SMS, the set-top box can switch to new SMS within short time so as not to cause stopping user's service.

The invention provides a layered exchange and control method for real-time monitoring system data by power dispatching. A CIM / XML (common information module) / (extensible markup language) interface, a CIM / E interface and other models of the electric power subsystems are processed and combined to establish a device model of the large power grid, therefore, perfect interaction of various application data including SCADA (supervisory control and data acquisition) real-time data, WAMS (wide area measurement system) data, EMS (enhanced message service) advanced application data and dynamic security analysis warning information can be realized, and power system control commands among the systems can be smoothly transmitted and executed. A data acquisition and exchange function can support multiple communication protocols, multi-application, multi-type and large amounts of data, satisfy the real-time requirements of all transmission environments, and provide comprehensive multi-scale real-time operation information of the power grid for other application analysis systems. A close integration mode is used to realize application integration and each subsystem and application can be monitored and managed, so a uniform access interface and a man-machine interface can be ensured to provide for each application system.

The invention discloses a data processing method and related equipment, which can determine a fault recovery allowable duration when a target node executes a target job, determine a fault recovery parallelism degree matched with the fault recovery allowable duration, divide check point data into M partition data when the target node outputs the check point data, wherein m is the same as the value of the fault recovery parallelism degree, and when the target node has a fault in the process of executing the target job, read the M partition data in parallel according to the fault recovery parallelism degree so as to perform fault recovery. The tolerable time of check point write-out and recovery can be estimated according to the dependency relationship and the execution duration of the historical jobs, and then the minimum parallelism degree capable of meeting the fault recovery requirement and the job response duration is estimated, so that the resource consumption is reduced to the maximum extent, and fault recovery based on the check point data can be effectively realized.

A redundant electronic control unit of an aviation piston engine realizes self-rescue of the RAM by optimizing the redundancy of the RAM data storage structure in the electronic control unit. When the original data is destroyed, the RAM data can be restored and corrected in time. Dividing the program into multiple modules and setting no-operation instructions and breakpoints between different modules can ensure that the program can be executed smoothly, and can realize rollback and fault recovery. The program execution is monitored through the counter, and when the program is in disorder, it can be restored in time to ensure the normal operation of the program. The electronic control unit can ensure the accuracy of sensor data collection by taking the average value of multiple samples of the sensor. The aviation piston engine redundant electronic control unit of the present invention can improve the safety and stability of engine work in application.

The invention discloses a link quality updating based route failure recovery method in WLAN. The method is characterized by comprising following contents: increasing the broadcasting frequency by shortening Hello packet broadcasting interval; accelerating source node list updating by reducing cleaning time interval; improving the link quality RQ value and improving the convergence rate. By the aid of the method, by combining shortening of the Hello packet broadcasting interval to increase the broadcasting frequency, the routing table updating interval and the RQ value optimizing strategy, the network re-convergence time during node failures is shortened, and the network robustness is further enhanced.

The invention provides a method and device for realizing a customized FTP server based on Apache FtpServer, which can accurately manage users through configuration, archive historical uploaded files to realize fault recovery, and can also realize broadcasting and sending files to meet multiple requirements. User download requirements. The method for realizing a customized FTP server based on Apache FtpServer includes: completing configuration information and storing it in a database; when monitoring a user event, performing corresponding operations according to the configuration information read from the database; The information of the event as well as the process and result of said operation are saved to the log table for further analysis.

The invention discloses an FPGA-based fault recovery method, which can monitor the working state of the FPGA after power-on, and reset the logic by using a hardware watchdog if the logic fails to be loaded successfully or the logic crashes. When the software embedded on the FPGA is unsuccessfully loaded or the software crashes, the software is reset through the logic watchdog to realize the fault recovery of the module without affecting the programming and configuration of the FPGA. The method is suitable for situations that require fault recovery, improves the reliability of work, and has general functions, which can be applied to various Xilinx FPGA-based fault recovery situations.

The invention relates to a satellite-borne double-CAN (Controller Area Network) bus node failure self-restoration system. Interrupt signals of two CAN controllers based on a double-CAN bus communication node are processed by adopting hardware logic and operation, on the one hand, the output signals are transmitted to a processor for receiving interruption of data, and on the other hand, the output signals are used for generating pulse signals so as to clear a failure monitoring hardware watchdog; when the watchdog does not receive a watchdog clearing signal in the setting time, hard restoration signals are generated to restore the two CAN controllers, and simultaneously, a failure alarm interruption signal is generated to inform the processor to initialize the two CAN controllers so as tofinish the failure restoration of the CAN communication node, therefore, the reliably and the real-time problems of failure detection are solved, meanwhile, the automatic removal of failure is ensured.

The invention discloses an electronic price tag starting control method and device. The method comprises the steps that the state of a first switching element arranged on a power circuit of an electronic price tag is controlled through a sensing element; when the state of the first switch element changes in a preset manner, the corresponding electronic price tag is triggered to execute a restarting process. The state of the first switch element arranged on the power supply circuit of the electronic price tag is controlled through the sensing element; when the state of the first switch element is changed in a preset manner, the corresponding electronic price tag is triggered to execute restart, so that the restart of the electronic price tag can be realized without disassembling a battery, the fault recovery is realized, and the working efficiency is improved.