120 results about "Cold standby" patented technology

Even when a large number of guest OSs exist, a failover method meeting high availability needed by the guest OSs is provided for the each guest OS. In the event of a physical or logical change of a system, or change of operation states, a smooth failover method can be realized by preventing the consumption of resource amounts due to excessive failover methods, and the occurrence of systemdown due to an inadequate failover method. In a server virtualization environment, in a cluster configuration having a failover method due to hot standby and cold standby, by selecting a failover method meeting high availability requirements specifying performance during failover of applications on the guest OSs, a suitable cluster configuration is realized. Failure monitoring is realized by quantitative heartbeat.

The invention discloses a dual-computer cold-standby system of an attitude and orbit control computer. The dual-computer cold-standby system comprises a dual-computer switched main control module, a dual-computer power management module, central processing unit (CPU) modules and watchdog modules, wherein two CPU modules are totally identical and have the respective watchdog modules; and the CPU modules are reset during software runaway. The CPU modules adopt an architecture of combination of an advanced reduced instruction set computer (RISC) machine (ARM) and a field programmable gate array (FPGA), and a triple modular redundancy (TMR) voting module in the FPGA performs voting correction on a signal in a static random access memory (SRAM), so the reliability of the ARM during program running is improved. In a normal mode, a standby CPU module is in a non-energizing state; the dual-computer switched main control module performs fault detection on a main control CPU module; when an irreversible fault of the main control CPU module is determined, computer switching operation is performed; with the dual-computer power management module, power switching between the main control CPU module and the standby CPU module is realized; relevant parameters of the field information and a running application program, which are stored by a dual-computer communication random access memory (RAM) module in real time, of the main control CPU module are used by the standby CPU module, so the inheritance of a control process is realized.

A method for fault tolerant controller readiness. Executing functions by a first controller operating in a primary status mode. Operating in a hot standby status mode by a second controller and mirroring the first controller by executing functions to operate as a redundant controller. Operating in a cold standby status mode by at least one backup controller under normal operating conditions. The second controller is reconfigured while operating under normal operating conditions from the hot standby status mode to the primary standby status mode if a failure occurs in the first controller. Reconfiguring the at least one backup controller operating under normal operating conditions from cold standby status mode to hot standby status mode to operate as a redundant controller in response to the reconfiguring the second controller from the hot standby status mode to the primary status mode.

The invention discloses a triaxial integrated optical fiber gyroscope inert measurement device based on optical source cold standby, and a compensation and installation method. The triaxial integrated optical fiber gyroscope inert measurement device comprises a body, two triaxial shared optical sources, an optical source driving and refrigerating circuit, three framework-free optical fiber loop meter heads, three optical fiber gyroscope signal processing and interference circuit digital boards, a system signal processing and interface circuit digital plate, a secondary power supply module, a frequency and voltage conversion simulation circuit, three electric connectors and a reference mirror. The three optical fiber loops share an optical source, and a standby cold optical source is provided, thus the reliability is high; the installation error correction method used by the invention can effectively reduce the triaxial cross coupling; the circuit boards are installed on a lateral cover and an upper cover for the convenience of radiation protection design; meanwhile, the favorable heat radiation is realized; framework-free optical fiber loops are used, the adaptability of a magnetic environment and a radiation environment is improved.

The invention discloses a double-machine cold standby non-distance switching method for a small satellite affair system. The method comprises the following steps of: constructing the satellite affair system consisting of a satellite affair host and a lower computer, configuring the lower computer in a double-machine cold standby mode, and communicating the lower computer and the satellite affair host through a satellite Internet; if a certain on-duty lower computer works abnormally is discovered, sending switching instruction by the satellite affair host to immediately shut down and restart the on-duty lower computer and start a corresponding standby machine, and setting the start time of the on-duty lower computer to be less than the start time of the standby machine; and if the restarted on-duty lower computer is still abnormal, replacing the on-duty lower computer by the standby machine, actively returning the stored working condition information before the primary on-duty lower computer works abnormally by the satellite affair host, performing reconstruction by the current on-duty lower computer, and entering a continuous normal working state. The method has high reliability and good instantaneity, enables the satellite affair system to form non-distance technical guarantee of uninterrupted work and application, and improves the service quality of a satellite without additionally increasing the overhead of hardware equipment.

The invention discloses a high-voltage power failure and transmission robot. The robot comprises a walking mechanism, an executing mechanism and a control system, wherein the walking mechanism comprises two front driving motors and two rear driving motors, the front driving motors and the rear driving motors are fixedly connected with the bottom of a vehicle body through supports, motor shafts ofthe front driving motors and motor shafts of the rear driving motors are fixedly connected with wheels, and a trackless deviation rectifying device is arranged on the vehicle body. The robot is advantaged in that the robot moves to a designated position through a walking mechanism, a rotating joint rod extends into a switch cabinet of a high-voltage power distribution cabinet to be matched with aswitch button and then rotates, and cold standby and hot standby conversion is conducted; the robot replaces manpower, a large amount of power failure and transmission work is completed, safety of operators can be guaranteed, and no matter what operators are.

The invention discloses a data cold standby method. The method includes the steps of generating a cold standby task including pre-configured cold standby data parameters, dividing the cold standby task into at least one sub task, executing the at least one sub task respectively, acquiring corresponding cold standby data from a cold standby data source, and storing the cold standby data in a distributed mode. The invention further discloses a corresponding data cold standby device. Net data copying, cold standby task centralized processing and cluster management of the cold standby data can be achieved, cold standby speed and efficiency are effectively improved, besides, the cold standby data are stored in the distributed mode, so that storage reasonability of the data, the application rate of a disc and the utilization rate of cold standby resources are improved.

The embodiment of the invention discloses a power supply control method, device and system for an alternating current (AC) drive electric locomotive train. The power supply control device comprises a first power supply control subsystem and a second power supply control subsystem which are identical; the first power supply control subsystem is electrified to control a current power supply system of the electric locomotive train; the two subsystems are connected through a conversion control unit; each of the two subsystems comprises a power supply control unit, a pulse distribution unit and a multifunction vehicle bus (MVB) board; the power supply control unit of the first power supply control subsystem acquires and processes digital quantity signals and analogue signals of a power supply cabinet and passenger train electrical equipment, wherein the digital quantity signals and analogue signals are received and converted through an MVB by the MVB board. Through combining a data acquisition manner which integrates the MVB boards and the MVBs in the power supply control device with the original cold standby manner which carries out communication by using a bus, a condition if components related to an electric locomotive centralized control terminal, another subsystem and/or the state of passenger train equipment are broken down can be timely known, a response can be made, and thus, the reliability for power supply control is improved.

The invention discloses a dual-center dual-live data processing system and method. The method comprises the following steps: judging whether the running state of the first data center meets the presetservice data processing conditions; if the result is no, switching the service data within the scope of the first data center to the second data center for processing, wherein the first data center is located in an area different from that of the second data center, and the first data center and the second data center synchronize with each other the service data within the scope under their jurisdiction. The invention solves the technical problems of the single center failure risk of the cold standby mode due to the limitation of the same city double living and the low resource utilization rate of the disaster preparedness center in the prior art.

The invention discloses a method for realizing node standby and a system. The method comprises the steps of: distinguishing standby nodes into hot standby nodes and cold standby nodes by main management nodes, and configurating hot standby nodes and cold standby nodes for standby for working nodes; and when the main management nodes need main and standby reversing, reversing the hot standby nodes into the working nodes, and reversing the cold standby nodes into the hot standby nodes according to a pre-arranging principle. The invention fully guarantees the reliability of standby, meanwhile, can save resources, and improve the utilization rate of resources.

The invention discloses a method and system automatically switching standby modes. The method and system automatically switching standby modes comprise that an electronic device acquire a multiple address code (MAC) address of a control device used for controlling the electronic device; the control device sends a standby command to the electronic device through the network to enable the electronic device to enter a hot standby mode; under the hot standby state, a power supply management module of the electric device detects whether the control device corresponding to the MAC address exists in the network through a communication module of the electronic device at regular intervals, if exists, then maintaining the hot standby state, if not, then switching to a cold standby state; and under the cold standby state, the power supply management module detects whether the control device corresponding to the MAC address exists in the network through the communication module at regular intervals, if not exists, then maintaining the cold standby state, otherwise, switching to the hot standby state. The technical scheme of the method and system automatically switching standby modes enhances user experience, saves energy source, and prolongs service lives of household appliances.

The invention discloses a dual-redundancy unmanned aerial vehicle brake controller and a cold standby control method. The dual-redundancy unmanned aerial vehicle brake controller mainly consists of amain control system, a standby control system and a monitor and arbitration unit, wherein the main control system comprises a main control microprocessor, a main bus transceiver and a main internal power supply; and the standby control system comprises a standby control microprocessor, a standby bus transceiver and a standby internal power supply. The cold standby control method is adopted in thebrake controller, and components and parts of standby control system are but out to reduce the electric stresses of the components and parts, so that the problem that the life of the components and parts of hot standby control systems are influenced by the electric stresses is solved; and in design of cold standby control systems, the monitor and arbitration unit is utilized to cache current PWM signal duty cycle instructions, so that the problem that interruption exists in PWM signal output in the cold standby brake control method is solved.

The invention belongs to the field of estimation of reliability, in particular to a reliability apriori information fusion-based estimation method for reliability of a cold standby system. The method comprises the following steps: (S1) obtaining reliability apriori information of parts and converting the reliability apriori information of the parts into reliability priori distribution of the parts; (S2) converting the reliability priori distribution of the parts into priori distribution of distribution parameters; (S3) according to the priori distribution of the distribution parameters, solving posterior distribution of the distribution parameters; (S4) based on the posterior distribution of the distribution parameters, estimating the reliability of the cold standby system. The invention aims to provide a method, and when the service life of the parts accords with Weibull distribution, the method can be used for fusing the reliability apriori information of the parts, estimating the distribution parameters of the service life of the parts and further estimating the reliability, taking k parts from n same parts, of the cold standby system consisting of n parts, thus better solving the problem of estimation on the reliability of the cold standby system consisting of the parts after the reliability apriori information of the parts is fused.

The invention relates to a power monitoring information intelligent extraction and classification processing method. The method comprises the following steps of S1, extracting information of a monitoring system, and finding an accident and abnormal information table from an EMS database; S2, screening the monitoring information; S3, acquiring result information screened and defined in the step S2,acquiring alarm contents, segmenting the alarm contents according to rules, and extracting alarm time, a plant station name, an information name, an action type and an interval ID; S4, judging a state of an interval according to the acquired interval ID, and shielding information of a cold standby state interval; S5, further shielding information which does not need to be processed by editing a logical relationship between keywords; and S6, storing the information and displaying a result: storing the screened and processed information in a server, and displaying the screening result. According to the method, accidents and the abnormal information in the monitoring system are extracted in real time and are displayed in a classified way, so that the processing efficiency is improved.

The invention discloses an energy-saving control system of machine room double-water-cooling equipment. The system comprises a main air conditioner unit, a standby air conditioner unit, a temperature detecting module, a pipe valve control module, an alarm module, a central control module, a communication module and an upper computer; the main and standby air conditioner units are independently operated; the alarm module periodically reads alarm information on a control chip of the main air conditioner unit; and the upper computer judges if the standby air conditioner unit is started according to failure types and the alarm information of the standby air conditioner unit to automatically finish the cold standby operation of a refrigerating air conditioner in a data center. The system solves the problem of high energy consumption caused by a heat standby mode, saves the energy, and prevents errors in manual operations and potential risks caused by the operation switching impact.

There are provided a power module in which a bias voltage is varied and supplied to a control circuit controlling power conversion when an idle mode is switched to a normal mode, and a distributed power supply apparatus having the same. The power module includes: a power factor correction stage; a DC/DC conversion stage switching power to convert the power into pre-set DC power in a powering mode in which normal power is output; a standby stage converting the power into pre-set standby power in a cold standby mode in which the DC/DC conversion stage outputs power having a level lower than that of normal power; and a variable bias supply unit varying a voltage level of bias power for controlling DC/DC power conversion and supplying the same to the DC/DC conversion stage in the cold standby mode and the powering mode.

The invention provides a cold standby system fault behavior modeling method based on an SBDD (Shared Binary Decision Diagram) model. The method comprises the following steps that: S1: analyzing and determining the key fault mechanism, the fault mechanism type and the relevant relationship of each component of a system in a standby period and a work period: according to the stress environment of different stages, carrying out FMMEA (Failure Modes, Mechanisms, Effects Analysis) on each component of the system to determine the key fault mechanism, the fault mechanism type and the relevant relationship of each component of the system in the standby period and the work period; S2: independently establishing a fault mechanism BDD model for each component of the system in the standby period and the work period; S3: establishing the SBDD model for the system structure of the cold standby system; S4: carrying out fusion to obtain the SBDD model of the cold standby system fault behavior, replacing a unit which represents each component in the SBDD model of the system structure with the corresponding fault mechanism BDD model so as to obtain the SBDD model of the cold standby system fault behavior; and S5: carrying out simulation analysis on the SBDD model of the system fault behavior, and obtaining the reliability curve of the corresponding component or the cold standby system accordingto requirements.

The invention discloses an automatic switching circuit for a hot-redundancy-to-cold-redundancy standby power supply. The automatic switching circuit comprises a power supply input circuit A, a 12V redundant circuit B, a first controllable switch circuit C, a first voltage comparator circuit D, a second voltage comparator circuit E, a second controllable switch circuit F and a relay automatic switching circuit G which are connected in sequence, wherein the power supply input circuit A is also connected with the first voltage comparator circuit D and the second voltage comparator circuit E, thefirst controllable switch circuit C is also connected with the second voltage comparator circuit E, the second controllable switch circuit F and the relay automatic switching circuit G, and the firstvoltage comparator circuit D is also connected with the second controllable switch circuit F. According to the invention, the circuit can realize cold standby of two paths of power supply output, accelerates the power supply switching speed, is low in circuit cost, and can effectively avoid the problem of mutual interference between two power supplies when the power supply module is applied to work in a hot redundancy state.

The invention discloses a low-orbit small satellite fault-tolerant system and method. The system comprises a storage component interface, first, second and third processors arranged in parallel, first, second and third logic judgment modules arranged in parallel, and a peripheral interface. The three processors can be set as master, slave, or cold standby, respectively. The master and slave process the data and instructions accessed by the storage unit interface, and the cold standby machine does not work. Each logic judging module is communicatively connected with two of the first, second andthird processors. The output results of the two processors can be compared respectively, and one output signal can be selected to output to the peripheral interface and the data storage unit according to the comparison results, or the remaining another processor can be started. The method is based on the system, wherein the two processors are simultaneously operated and the output signals are compared, and the third processor is started for output comparison when the comparison fails to pass, and the output is finally determined, thereby solving the problems of insufficient fault detection capability of the host computer and low reliability of the output results in the prior art.

The invention discloses a dual-power redundant cold standby uninterrupted switching circuit. The dual-power redundant cold standby uninterrupted switching circuit comprises a detection and output control circuit, an MOS tube driving circuit and a fault detection and control signal feedback circuit, wherein the detection and output control circuit and the fault detection and control signal feedback circuit are connected to the MOS tube driving circuit respectively; and voltage input and output pass through the MOS tube driving circuit respectively. Compared with the prior art, the dual-power redundant cold standby uninterrupted switching circuit has the advantages that firstly, the circuit realizes industrial mainframe box power redundant backup, the design of a power redundant single board is realized, the switching circuit is realized on the single board, and the replacement of a faulted power module in an uninterrupted power condition of equipment is satisfied; and secondly, the circuit is constructed and formed by using common passive components and parts without special requirement, and the circuit is simple, reliable and low in environmental requirement.