30results about How to "Implement fault tolerance" patented technology

The invention discloses a fault tolerance method and a fault tolerance system of virtual machines. A virtual machine communicates other virtual machines to determine a member relationship configuration file; each virtual machine operates on a node computer in a network; a first virtual machine is usually appointed as an activity virtual machine, the other virtual machines are appointed as standby virtual machines, and a virtual in-step computation system is established; when the activity virtual machine performs single-step operation, an operation token which comprises the content of the single-step operation is generated; the activity virtual machine distributes the operation token to all standby virtual machines according to the member relationship configuration file; each standby virtual machine sequentially receives the operation token, executes the operation token and then sends the operation token to the next standby virtual machine to keep all virtual machines in a consistent state; and when one or more virtual machines fails, the virtual machines which do not fail re-establish the member relationship configuration file, restore the state before failure occurs, and continuously execute operation tasks before the failure occurs, so that a fault tolerance function of the system is effectively realized.

The invention discloses a universal small unmanned aerial vehicle dual-core flight control computer and a control method. The computer comprises an airborne sensor system, a wireless communication module, master and slave flight control computer bodies, a dual-port RAM, a first multiplexer switch and a second multiplexer switch, wherein the master and slave flight control computer bodies send heartbeat detection signals to each other through a CAN bus to judge whether failures exist, the first multiplexer switch is controlled to connect the airborne sensor system and the wireless communication module to the master or slave flight control computer body according to a judgment result, and a control signal is obtained through calculation according to received and decoded unmanned aerial vehicle state information and a wireless control instruction by the master or slave flight control computer body; the second multiplexer switch is controlled according to a judgment result to output the control signal of the master or slave flight control computer body, so that the computer is made to work in the master-slave load sharing mode or independent sharing mode. The dual-core flight control computer is high in operation speed, large in data throughput and capable of guaranteeing continuous operation of a system.

The invention is applicable to the technical field of communication and provides a watchdog fault-tolerant processing method and a mobile terminal. The method comprises the following steps of: setting a blacklist of a process, wherein the blacklist comprises one or more appointed abnormal processes; and when detecting that a counter of a watchdog is timed out, closing the abnormal processes, which cause timeout, according to the blacklist, and resetting the counter. According to the watchdog fault-tolerant processing method and the mobile terminal, provided by the invention, fault-tolerant processing of the single abnormal process is realized, and whole machine resetting and restart with relatively high cost are avoided; and a fault-tolerant recovering process of the abnormal processes by the watchdog is effectively simplified and fault-tolerant recovering time is shortened.

The invention discloses a control device for an elevator. The device comprises an energy storage device (20), an energy storage device state detector (21), a charge/discharge circuit (19), an energy storage device controller (22), an energy consumption circuit (5) and an energy consumption circuit control device (18), wherein the charge/discharge circuit (19) comprises n parallel branches; and when the regenerated energy of the elevator exceeds the storage capacity of the energy storage device (20) or the regenerated current or regenerated power of the elevator exceeds the acceptable upper limit of the energy storage device (20) or charge/discharge circuit (19), the energy consumption circuit control device (18) controls the energy consumption circuit (5) to completely or partially consume the exceeding part of the regenerated current or power so that the bus voltage is constant or changes according to the predetermined rule and/or the energy storage device is charged in a range avoiding overcharge. According to the invention, the equipment capacity of the elevator power system can be effectively reduced, the electric parameters and power consumption of the power module are effectively reduced, and the service life is prolonged.

The invention discloses an intelligent frequency conversion control cabinet comprising a control cabinet body, and a DDC, a frequency converter, a soft starter, a contactor, an operation display panel, an intelligent electric meter and a thermal module which are installed in the control cabinet body; the operation display panel is provided with manual start-stop buttons, and variable frequency/power frequency and local/remote selector knobs; the DDC is controlled through these buttons and knobs so that the contactor, the frequency converter and the soft starter are controlled, and the DDC is connected to all on-site sensors through sensor interfaces; meanwhile, the DDC is further connected to a network controller through a cable, so that the operating data of the intelligent frequency conversion control cabinet is uploaded to a remote upper computer, and the system operation can be monitored conveniently and remotely. The intelligent frequency conversion control cabinet disclosed by the invention has the functions of energy efficiency monitoring, automatic control, energy-saving control and regulation, and energy use safety monitoring and alarm.

The invention discloses a data processing method and device and belongs to the technical field of multimedia. The method comprises the following steps: when a blanking row is determined to be detectedbased on the value of SAV and the value of EAV in a received data row, counting the continuous valid quantity; if the continuous valid quantity reaches the first preset quantity, analyzing valid datacontained in the detected valid row whenever the blanking row is determined to be detected based on the value of the SAV and the value of the EAV in the received data row after the EAV of a next blanking row is detected; in the analyzing process, when the blanking row is detected again based on the value of the SAV and the value of the EAV in the received data row, ending the analyzing operation,and recombining the valid data, obtained by analyzing according to a preset data row format on the basis of a preset resolution and a receiving timing sequence, into frames, thereby solving the problem of row lost or frame drop caused by discarding the data rows once a fault is detected by using the CRC, and improving the fault tolerance processing of the data.

The invention discloses a man-machine conversation matching method and device based on pronunciation similarity and a medium, and the method comprises the steps: obtaining a character string answeredby a user and character strings corresponding to a plurality of to-be-matched candidate answers; converting the character strings answered by the user and the character strings of the candidate answers into corresponding pronunciation arrays respectively; calculating an editing distance between the pronunciation array corresponding to the user answer and the pronunciation array corresponding to each candidate answer; obtaining pronunciation similarity between the two character strings according to the editing distance; and obtaining candidate answers matched with the user answers according tothe pronunciation similarity. According to the invention, the fault-tolerant capability of a voice-based man-machine conversation system can be effectively improved, correct conversation understandingis realized, and the conversation service is smoother and more efficient.

The embodiment of the invention provides an IMS network registration method and a related device, and relates to the field of communication. The terminal device establishes a bearer with the IMS network; receiving a response message returned by the IMS network based on the P-CSCF device discovery request sent by the terminal device, and when it is determined that the response message does not carry the address information of the P-CSCF device allocated by the IMS network, or the address information of the P-CSCF device carried in the response message is invalid, reading locally pre-configuredalternative address information, and initiating a registration request to the IMS network based on the alternative address information. Visibly, when the IMS network is abnormal and the address of theP-CSCF equipment cannot be returned; the terminal equipment is pre-configured with the alternative address information of the P-CSCF equipment, so that IMS registration can be performed by using thealternative address information, and the situation that the terminal equipment cannot be successfully registered to the IMS network due to the fact that the IMS network is abnormal is avoided.

Disclosed is a single-phase load control device and method. The device at least comprises two change-over switches or a plurality of single-phase power drivers, which are connected to a three-phase power supply and single-phase loads controlled by the single-phase power drivers. The device is characterized in that the single-phase power drivers connected to the three-phase power supply are connected to two sides of each single-phase load, respectively; the single-phase power drivers on one side are connected to any two phases of the three phases of A, B, C; the single-phase power drivers on the other side are connected to the left phase and any one phase of the two phases; or the single-phase power drivers on the other side are connected to the left phase and a zero-line phase. As a result, each single-phase load is added between any two phases, or a redundant load is added between any one phase and the ground via three single-phase power drivers. The single-phase load control device can be used for active adjustment and reactive compensation, and achieves purposes of balancing three-phase load, improving reliability of a system, and saving energy.

The invention relates to the field of data processing, in particular to a fault tolerance method and device for data storage, equipment and a storage medium. The method comprises the steps that when the embedded system is powered on and started, whether the process of storing data to be backed up to a first storage space is completed or not is judged when the embedded system is powered off last time; if yes, first backup data stored in the first storage space are backed up to the second storage space, the first backup data are recovered to the embedded system, and the first backup data are to-be-backed-up data stored when the embedded system is powered down last time; if not, second backup data stored in the second storage space are recovered to the embedded system, and the second backup data are historical to-be-backed-up data stored before the embedded system is powered down last time. The data backup method and device are used for solving the problem that on the premise that the size of equipment is not increased, when the embedded system is powered down, the accuracy of backup data cannot be guaranteed, and then power-on recovery of the system is abnormal.

The invention provides a filling type hollow hydraulic support device and belongs to the technical field of hydraulic supports. The filling type hollow hydraulic support device is characterized in that the filling type hollow hydraulic support device comprises a blind hole base, a connecting disk, an outer cylinder body, an inner cylinder body, a piston, a compressing spring, a piston cover, a top cover, a top cover connecting disk, an oblique wedge and a ring sleeve; a top cover connecting disk of the top cover is connected with a piston of a hollow hydraulic cylinder formed through combination of the outer cylinder body, the inner cylinder body, the piston, the compressing spring and the piston cover; the bottom end of the hollow hydraulic cylinder is connected with the upper end of the blind hole base through the connecting disk; the T-shaped top cover penetrates through hollow cavities of all the parts; filling balls are poured into a center cavity of the blind hole base through a funnel inserted into an oblique hole in the blind hole base, so that the functions of hydraulic constant-resistance support in a working state and fault-tolerance support for safe supporting of the filling balls and the T-shaped top cover in a fault state are achieved; and when a support is dismounted, the filling balls are taken out after the oblique wedge of the blind hole base is pulled out, and thus hydraulic unloading is achieved. The filling type hollow hydraulic support device has the advantages that the structure is simple, installation and maintenance are convenient, and safety is facilitated through dual support.