109 results about "Standby redundancy" patented technology

Geographical redundancy and an efficient switchover process to redundant equipment (210) is achieved by separating active main equipment (220) and standby redundant equipment in different geographical locations so that failures can be avoided in the event of a natural disaster or other event that affects an entire building or region. In addition, partial switchover can be performed for components or functions that become inoperative to corresponding redundant components in the standby equipment. To provide further redundancy and prevent unneeded switchovers, status or heartbeat messages are transmitted between the active main equipment and standby redundant equipment over two different networks.

A method, apparatus, and system for preserving the cache data of redundant storage controllers, by copying the recorded data blocks and the associated cache tags in the primary cache memory of a storage controller to a secondary cache memory of an alternate, redundant storage controller, wherein upon a failure occurring in the primary cache memory of any of the storage controllers, subsequent storage requests from a host, previously intended for processing by the failed storage controller, are processed through the secondary cache memory of a non-failed, redundant storage controller that contains the failed storage's controller cache data and cache tags.

The invention provides a method for processing an abnormal task in a computer application system adopting an embedded operating system; and an application system based on main and standby redundancy configuration of a hardware platform is adopted. The method comprises steps executed by a process of initializing the computer application system, a process of updating a task state table, a process of capturing the abnormal task, a process of detecting a closed loop, a process of processing the abnormal task and a process of checking system restart. The invention also provides a system for processing the abnormal task in the computer application system adopting the embedded operating system; and the system comprises a detecting module, a capturing module, a record inquiring module, a task state table, an abnormal information memory region and a processing module. By the method and the system, the stable working capability of the computer application system is guaranteed, the abnormal taskof a closed loop or automatic restart can be detected and recorded, the error correcting capability of the computer application system is provided in large scale, and the controllability of a development process of the computer application system can be improved.

The invention discloses a smart central strategy control system for a micro-grid. The smart central strategy control system for the micro-grid comprises a micro-grid electrical system. The micro-grid electrical system comprises a distributed electricity generation unit, an energy storage unit, an environment monitoring unit, a simulation load unit, an actual load unit, a communication network unit and a central strategy control unit. The smart central strategy control system for the micro-grid further comprises an information collection system unit and a central control processing unit. According to the smart central strategy control system for the micro-grid, overall control, coordination and optimization of electricity generation equipment, electricity consumption equipment and electricity consumption quality of the micro-grid can be achieved, the intermittent energy electricity generation plan, the load electricity consumption plan, load control, energy storage, the diesel engine electricity generation plan and the like are involved, and the functions of emergency electricity consumption control, automatic grid-connected / grid-disconnected switching control, adverse current prevention control, black-start control, peak load shifting, time shifting and the like of the system can be achieved. In communication, the smart communication detection technology and the channel hot standby redundancy technology are adopted additionally, and the stability and the reliability of communication are guaranteed.

The invention provides a cell-level hot standby redundancy ATO system architecture and a cell-level hot standby redundancy automatic train operation system. The system comprises a first sub-system running as a main system, and a second sub-system running as a standby system, wherein the first sub-system is provided with a first main control unit and a first group of functional units; the second sub-system is provided with a second main control unit and a second group of functional units corresponding to the functional units in the first group of functional units one to one; when one function unit in the first group of functional units of the first sub-system breaks down, the system activates the function unit, corresponding to the functional unit which breaks down, in the second group of functional units of the second sub-system, so that the functional units which do not break down in the first sub-system and the activated function unit in the second sub-system continue to work together.

The invention relates to an automatic train driving system based on double-system hot standby redundancy. The system comprises two automatic driving systems connected with a train, wherein each automatic driving system comprises a power source, an input module, a control module, a switching module and an output module, the power source supplies power for all equipment of the system, the input module is used for acquiring input information of vehicles and sending the input information to the control module, the control module communicates with an automatic protection system and a record system of the train and monitors states of the power source, the input module, the switching module, the output module and the control module itself of the location system, the switching module is used for evaluating a work state of the location system and carrying out system switching according to the practical state, and the output module outputs a control command to the train. The system, through multiple redundancy measures, improves reliability of the automatic driving systems and reduces influence of a system fault on main line operation.

The invention belongs to the technical field of a digital instrument control system in a nuclear power station and provides a redundancy control equipment of the digital instrument control system, the digital instrument control system and a control equipment main / standby redundancy control method. The control equipment comprises a main control device and a standby control device, wherein the main control device is provided with a first controller and a first CPLD, the standby controller is provided with a second controller and a second CPLD, the first controller and the second controller are respectively provided with a fault determining unit, a fault state result is outputted to the first CPLD when the fault determination unit of the first controller determines that the main control device is in fault and the standby control device is not in fault, the main control device is set by the first CPLD to be in a fault state, the second CPLD is set to be in a main state when a fault state of the first CPLD is acquired by the second CPLD, and the standby control device becomes a main control device. The whole control equipment is advantaged in that a redundancy arbitration speed is faster, and reliability is higher.

The invention discloses a dual-machine hot standby train automatic operation (ATO) system. The system comprises ATO systems independently configured at a head end and a tail end. The ATO system at each end comprises an ATO system A machine, an ATO system B machine, an arbitration device and a parallel output control unit, wherein the ATO system A machine and the ATO system B machine both employ independent input output ports, perform real-time self-examination and send a self-examination result to the arbitration device; the arbitration device is used for determining the working states of the ATO system A machine and the ATO system B machine according to the received self-examination result and selecting a main device from the two machines; and the parallel output control unit is used for a train control instruction outputted by the main device to a train control interface. By using the system disclosed by the invention, the heat standby redundancy switching of the ATO system is realized, and the system safety is improved.

The invention provides a reconfigurable triple-redundancy computer system and a configuration degradation method thereof and belongs to the field of computers. After a triple-redundancy control computer system is power on, the system works in a hot standby redundancy manner; when any control computer goes wrong, the faulting computer is reset or power off, recoverable faults of one computer are eliminated; the restarted faulting computer acquires current working state information of the other two computers to complete reconfiguration; when multiple faults occur in one computer, a power failure operation is carried out on the computer; the remaining two computers at normal operation run in master-slave working modes of the two computers; when a host of the two computers goes wrong, the standby computer seizes the right of communication for an external interface and works in a standalone mode. Rapid data interaction is carried out on each control computer by use of three parallel storage data buffer areas, and the faulting computer and the working computer are reliably determined by use of two judgment methods. The computer logic is simple to realize, all primary faults and part of secondary faults of the computers can be solved, the reliability of the computer system is improved and an engineering application is facilitated.

The invention relates to an automatic switching control method of hot-standby redundancy of a remote control computer. The method is applied to a ground measurement-launch-control flow of a launch vehicle to realize hot-standby redundancy switching of a remote control computer during long-distance testing. Hardware units of two re mote control computers redundant to each other are equipped with dual-network cards, dual-network card binding is carried out by an INTEL Team technique and only one IP address is used externally, and a network is formed by a dual-machine-redundant Ethernet switch. The two remote control computers can issue network variables by the Ethernet network to realize a mutual monitoring function; and data communication is carried out by the Ethernet network and a programmable logic controller (PLC). When a fault occurs at one remote control computer, the other remote control computer monitors the state of the fault remote control computer and the current control state of the fault computer is synchronized to the other fault-free computer automatically, so that automatic switching control is realized.

The invention relates to a double-unit backup controller of a proton exchange membrane fuel cell. A master controller processor and an alternate controller processor are both connected with a power supply module, a data storage module, a master / alternate controller switching module; the master controller processor is also connected with the alternate controller processor and a communication module; the master / alternate controller switching module is connected with a data acquisition module and a driving output module. The method comprises the following steps that the master controller processor monitors a fuel cell device in real time, and regularly sends data of a fuel cell sensor to the alternate controller processor for backup; when the master controller processor malfunctions, the alternate controller process backs up the information of the fuel cell sensor by the master / alternate controller switching module and turns off the device. According to the invention, double-unit standby redundancy design is adopted; when the master controller malfunctions, the alternate controller can replace in real time so as to complete the necessary control operation, so that the system is prevented from being in the out-of-control state; the double-unit backup controller of the proton exchange membrane fuel cell has the characteristics of performance stability and high reliability.

The invention discloses a dual-machine hot standby redundancy implementation system and method for a subway integrated monitoring system. The dual-machine hot standby redundancy implementation systemcomprises a redundancy configuration module, a redundancy network service module, a redundancy message management module and a redundancy core management module. Main and standby self-judgment and main and standby switching of the redundancy management system refer to a strategy that the redundancy management system judges the main and standby states of the redundancy management system according to login information after the redundancy management system is started and carries out main and standby switching according to the safety message information of the host in the system operation process. According to the method, self-judgment of main and standby of the redundancy management system can be achieved, main and standby switching of the managed process is conducted in a targeted mode through information interaction with the redundancy management system, and then hot standby redundancy of the whole subway comprehensive monitoring system is achieved.

The invention discloses a wired and wireless hot-standby redundancy multi-master communication method and a field network node module. According to the method, in a field-level wired and wireless mutual-standby dual-network monitoring and control network, corresponding controlled objects are controlled, and states of monitored objects are acquired; and both a wired communication mode and a wireless communication mode of the network node module are online during work, and all modules in the network preferably select wired modes for communication generally. The method has the advantage that the redundant network node module can be directly connected with an instrument or field actuator so as to acquire the state of the instrument or control the field actuator; and meanwhile, the redundant communication of wired and wireless communication units can be realized by adopting a suitable algorithm, so that a field-level dual-network redundant communication monitoring and control system is constructed, and the reliability of an industrial field monitoring and control system is improved. The method has the characteristics of zero-cost communication operation and no need of additional redundancy management equipment.

The invention discloses a hot standby redundancy central control panel used for a screen door, which comprises filtering isolation circuits, isolation control circuits and two programmable logic devices, wherein each programmable logic device comprises a clock module, an input signal processing module, a decoding module, a logic control module, a communication module and an output signal processing module; each logic control module can monitor a working state of the other programmable logic device through each communication module; the working modes of the two programmable logic devices are controlled by operation; under the normal condition, the two programmable logic devices work by turns; and when one of the programmable logic devices breaks down, the other programmable logic device is switched automatically and works continuously. The central control panel can control the out-of-control time of the screen door due to a failure to be shortest, so that the running safety of a train is improved.

The invention provides a DHCP server active-standby redundancy method and system. The method includes the steps that a main DHCP server and a standby DHCP server are started, and share an IP address pool; if the main DHCP server works, the main DHCP server collaborates with the standby DHCP server to obtain a standby server list; the main DHCP server synchronizes the obtained standby server list to the standby DHCP server on the standby server list; when the main DHCP server breaks down, the standby DHCP server on the standby server list carries out switching and judgment, and the standby DHCP server meeting switching conditions is switched to serve as the main DHCP server to work on the basis of the IP address pool. Under the situation of DHCP server active-standby redundancy, IP addresses are fully used.

The invention discloses a method for achieving dual-network hot standby redundancy of a blank pipe automatic system. The method comprises the steps of establishing network hardware connecting topology, establishing network state monitoring process in an application layer of a control procedure of each machine, establishing a working net switching control procedure in a network monitoring procedure of each machine, establishing a redundancy sending operation procedure at the data sending end of each machine, establishing a data filtering control procedure at the receiving end of each machine, establishing a network state monitoring terminal and the like. The method has the advantages that a distributed network monitoring mechanism is adopted, the network state is monitored in real time, and the automatic switching speed of a network is high; two three-layer exchangers are in cascade connection so that when one of the networks of each machine is normal, communication between the two sides can be conducted and the cross fault can be avoided; in terms of data transmission, data are simultaneously sent to the main network and the standby network of each receiving end by one sending end, and redundancy of the data on the main network and the standby network is achieved; due to the filtering of data numbers and timestamps, a repeat and leakage of data receiving are avoided and the effectiveness and the seamlessness of switching are guaranteed.

The invention relates to a train real-time Ethernet network card based on a Linux platform. The train real-time Ethernet network card comprises a core processing unit, a real-time Ethernet transceiver, a CAN interface, two UART interfaces and two common Ethernet transceivers, wherein the core processing unit is respectively connected with the two paths of common Ethernet transceivers, the real-time Ethernet transceiver, the CAN interface and the two paths of UART interfaces, and is integrated with VME backboard bus logic and interfaces; the core processing unit comprises an FPGA and an ARM loaded with a Linux platform and is used for achieving protocol conversion and data transmission between VME backboard data, CAN network data, UART network data and a TRDP network. The two paths of common Ethernet transceivers are in a hot standby redundancy relationship and are used for data redundancy sending scenes with high reliability requirements. By adopting the TRDP communication data processing method and device, high-reliability and high-real-time data processing of TRDP communication data can be achieved, and the requirements of a train communication network for real-time performance and reliability are met.

The invention provides a condition-based main / standby switching method and a condition-based main / standby switching device in a redundancy backup system. The method comprises the following steps of: presetting a unit state in the system, wherein the unit state is divided into a main state and a standby state, and a unit in the main state executes the service function of the system; presetting a condition for switching the main state and the standby state between units, wherein the condition comprises either switching according to the set time or unallowed switching; and monitoring the system state, and when the condition is met, switching the main state and the standby state between units according to the condition. By setting the main / standby switching condition, a condition mechanism is arranged in a general main / standby redundancy mode, and the condition can be set according to the user need; therefore, various use requirements of a user are better met.

The invention discloses a rail train controller which comprises a rear panel, business boards and a power panel, wherein a circuit designed through PCB wiring and slots connected through the circuit are formed in the rear panel; the business boards are arranged in pairs, and the same pair of business boards has the same function so as to be used for hot standby redundancy; the power panel is provided with two paths of identical independent power circuits to be used for switching any one power supply with failure to another one during failure; the business boards and the power panel are inserted into the slots; and the two independent power circuits on the power panel are respectively used for supplying power to two business boards in the same pair of business boards. The rail train controller disclosed by the invention has the beneficial effects that the business boards with identical functions can be arranged in pairs in the rail train controller and are used for cooperative operations, and when any one of the pair of business boards fails, the control power can be timely switched to the other business board, so that operation of the whole system is not influenced, and a phenomenon that unpredictable results are caused by single-point failure is avoided.

A memory device has a number of memory segments connected to a supply source through a supply control circuit. If one of the memory segments is defective, the supply control circuit isolates the defective memory segment from the supply source. The memory device replaces the defective memory segment with a redundant segment.

A dynamic-pre-positioned measurement and control equipment dynamic relay cabinet modularized redundancy control system is provided. The dynamic-pre-positioned measurement and control equipment dynamic relay cabinet modularized redundancy control system includes a power source control module, a ground core one-stage gas distribution station control module, a ground core two-stage gas distribution station control module, a rocket engine valve control module and a wired measurement parameter acquisition display module; according to the power source module, master and slave power source hot standby redundancy control is adopted; and according to control signals of a dynamic relay cabinet, redundancy control of double-component synchronous electrification is adopted. According to the dynamic-pre-positioned measurement and control equipment dynamic relay cabinet modularized redundancy control system of the invention, a small number of functional modules are adopted to form control units as much as possible, and therefore, the dynamic-pre-positioned measurement and control equipment dynamic relay cabinet modularized redundancy control system is stable in performance and simple in structure; the modules are provided with standard interfaces, the combination of different functional modules and the interchange of identical functional modules can be ensured, and therefore, supporting facilities of an overall unit can be simplified, and through different combination and expansion, requirements of launch of rockets in various models can be satisfied, and an ability to fast respond to faults appearing before the launch can be improved. The dynamic-pre-positioned measurement and control equipment dynamic relay cabinet modularized redundancy control system can be applied to dynamic-pre-positioned equipment or other single-unit products and can satisfy requirements of zero-window launch missions of the rockets.

A redundancy circuit in a semiconductor memory device comprises a fuse set controller configured to output a redundancy enable signal enabled according to applied address signals; a redundant selector; a spare redundant selector; and a spare fuse controller configured to be controlled by the redundancy enable signal, and to output a selection control signal that selects at least one of the redundant selector and the spare redundant selector in accordance with an internal fuse option.

The invention provides a block chain based access control system. The block chain based access control system comprises a block chain database, a fingerprint recognition module, a face recognition module, a central module and an electromagnetic lock, the fingerprint recognition module and the central module are connected through a wire to acquire and recognize a fingerprint image of a target personnel; the face recognition module and the central module are connected through a wire to acquire and recognize a face image of the target personnel; the central module and the electromagnetic lock areconnected through a wire, the electromagnetic lock is unlocked when the recognition of the fingerprint recognition module and the recognition of the face recognition module are successful; and the block chain database is used for storing fingerprint information, face information and a surveillance video of a user. The block chain technology is used to store and call the information of the user from multiple ports, the safety performance of the access control system is improved, meanwhile, the standby redundancy is processed, and the storage space is saved.

The invention provides a train control system and a train control system four-mode switching display method. In a host unit with double 2-vote-2 hot standby redundancy and a main control system with two-end quadruple modular redundant, a method for selecting a current display mode of a human-computer interface unit through switching comprises the steps of (1) receiving that a host unit informationtransmitter is used as a mode currently displayed on a human-computer interaction interface first when the human-computer interface unit is just electrified; setting the priorities of the following parameters from low to high: shorter distance, minimum speed limiting-time speed difference, alarming prompting and braking output; and according to a sequence from the low priority to a high priority,performing switching displaying according to the priority sequence. According to the train control system and the train control system four-mode switching display method, effective information can bedisplayed on a DMI interface in a more timely manner to be more beneficial for driver operation.

The invention relates to a restarting method of a train controller. The method comprises the following steps that A, a train VOBC calculates timing restarting conditions; B, the VOBC of the train summarizes fault information; C, the VOBC of the train is restarted; and D, the two ends of the train are synchronized to realize main and standby redundancy. Compared with the prior art, the method has the advantages that multiple restart modes are provided, and the requirements under different conditions can be met, so that the influence of train controller faults on subway operation is reduced, andthe operation handling efficiency is improved.

The invention discloses an AIS base station virtual navigation mark broadcast monitoring system and an AIS base station virtual navigation mark broadcast monitoring method. The AIS base station virtual navigation mark broadcast monitoring method comprises the steps of: setting AIS base stations to broadcast virtual navigation mark signals, wherein each AIS base station adopts a plurality of transmitters as standby redundancy; setting a reference receiving end to monitor the virtual navigation mark signals from the AIS base stations, and transmitting monitoring information back to a monitoring center; and calculating reception quality of the reference receiving end and transmission quality of the AIS base stations at the monitoring center so as to obtain integrity evaluation data of the transmitters, and alarming and switching the primary and standby transmitters according to the integrity evaluation data. Through the arrangement of the reference receiving end, the virtual navigation mark signals from the AIS base stations are monitored, and the integrity evaluation data of the transmitters are obtained through calculation to carry out alarming and switching on the primary and standby transmitters, thereby ensuring the continuity and integrity of AIS base station virtual navigation mark broadcast, and greatly improving safety and reliability of navigation by means of the virtual navigation mark.

A communicating and synchronous data interaction method of a thermal standby redundancy system is provided, wherein the communicating data and the synchronous data are transmitted and received by adopting one physical channel, in the interaction process, the communicating data is preferably transmitted, if the communicating data transmitting is not empty, the communicating data is transmitted, if the communicating data transmitting buffer zone is empty, the synchronous data is transmitted, the interactive mode of the communicating data and the synchronous data can be in automatic switchover, thus improving the interactive efficiency of the data of the redundant system. in the data synchronization process, the returning synchronous data receiving time is compared with the counterpart transmitting synchronous data receiving time, when the synchronous data transmitted by the counterpart is lagged of the returning synchronous data, a counter is adjusted for the data synchronization, thus improving the synchronism of the whole system. The method of the invention has simple realization, and can save a great amount of hardware source.

The invention discloses a maglev train and a levitation control system, controller and control method of the maglev train. Core computing control units are utilized for multi-machine hot standby redundancy, by additionally arranging multiple independent and parallel core computing control units, when the core computing control units break down, quick switching can be achieved through an arbitration control unit, and the output of the levitation controller and the stability of the levitation control system are not influenced; the core computing control units can achieve real-time communication,and the maglev train and the levitation control system, controller and control method of the maglev train have the advantages of being simple in structure, high in reliability, high in fault rate andlow in cost.

The invention discloses a control method of server main-standby redundancy, which comprises the following steps: configuring a first node and a second node as nodes which are backup each other, and storing configuration information in the first node and the second node; during the normal operation of the first node, the preset target data is stored in the first node and the second node in real time. When it is judged that the first node is abnormal in working state, the second node is raised to the working node. After the first node returns to the normal working state, the first node is lowered to a non-working node according to the configuration information, and the target data in the second node is backed up in the first node. The method of the invention effectively avoids service interruption and data loss caused by server node abnormality. The invention also discloses a server master-backup redundancy control system, a device and a storage medium, which have corresponding effects.