170 results about "Standby system" patented technology

Embodiments of the present application relate to the technical field of servers, and provide a dual-machine hot standby management method and a computing device. The method can effectively solve the split-brain problem existing in a main and standby deployment mode. The method is applied to a first node in a dual-machine hot standby system; the dual-machine hot standby system comprises a first node, a second node and a gateway; the first node and the second node are respectively communicationally connected to the gateway. The method comprises: a first node detects connectivity with a gateway; the first node detects an occupation condition of a floating IP; when the first node is communicated with the gateway and the first node does not occupy the floating IP, the first node acquires the state information of a second node; on the basis of the state information of the first node and the state information of the second node, the first node determines a master machine and a standby machine in a dual-machine hot standby system.

The invention relates to a tethered airship self-destruction control method which specifically comprises an airborne control core and a self-destruction standby system so as to ensure that a self-destruction task can be effectively executed under different fault conditions. The airborne control core judges whether the airship exceeds a safety range or not through the GPS module, or receives a remote self-destruction instruction through the wireless communication module to trigger a self-destruction program. The self-destruction process comprises the steps that the valve push rod driving circuit rapidly deflates, the electric heating wire driving circuit burns through the ball body, the lithium battery burning explosion trigger circuit triggers battery burning explosion, and thorough damage is ensured. If the main system fails, the standby control module supplies power through a standby battery, takes over a self-destruction task, keeps communication with the ground, and triggers the parachute to release by utilizing a time delay mechanism or an air pressure sensor when the height sensor fails, so that the landing safety is guaranteed. And the main control program performs byte-by-byte deletion through a bootloader program in a self-destruction process, so that data leakage is prevented.

The invention discloses a train control system, method, equipment and medium based on active sensing and autonomous localization, and the system comprises a multi-source autonomous sensing system which collects and outputs the information of the environment in front of a train by fusing the sensing data of a plurality of sensors; the vehicle-mounted standby system is in communication connection with the multi-source autonomous sensing system, accesses a pre-stored digital track map and is used for dynamically generating route topology and movement authorization and generating a train control instruction according to the train front environment information, the train real-time position and the line data of the digital track map; a dual-mode communication switching unit is arranged in the vehicle-mounted standby system and used for monitoring the communication state of the main train control system, and when the main train control system breaks down, the train control right is automatically switched to the standby system. Compared with the prior art, after the main train control system loses efficacy, the train can be made to be independent of a central control system and a fixed electronic map, the real-time state of a line is automatically adapted, and the safe driving instruction is generated.

The present application provides a hot standby system and method, an electronic device, and a storage medium. The system comprises: accelerator cards, which are connected to master servers in one-to-one correspondence and are in shared connection with a standby server, and each are used for acquiring operation status information, operation log information, memory information, and configuration information of the correspondingly connected master server, when it is determined, on the basis of the operation status information, that the correspondingly connected master server has gone down, acquiring data to be processed that is to be transmitted to the correspondingly connected master server, and transmitting the operation log information, the memory information, the configuration information, and said data to the standby server; and the standby server, which is used for, on the basis of the operation log information, the memory information, and the configuration information, simulating and generating a virtual application environment for the correspondingly connected master server, and on the basis of the virtual application environment and said data, executing an application service of the correspondingly connected master server.

A stationary hybrid battery back-up system incorporates two different battery units that differ in terms of recharging efficiency, cycle life, power capability, depth of discharge threshold, temperature threshold, internal impedance threshold, charger rate efficiency and / or stand-by efficiency. The battery back-up system of the present invention comprises an auxiliary power supply that can be used to charge the first and second batteries and / or provide power to a load. When the operating voltage of the system drops, due to a power failure of a power source, the control system may couple the first and / or second battery unit to a load. The control system may have voltage threshold limits wherein it engages the first and second battery units to support the load demand. The first and second battery units may be charge by the auxiliary power supply when the operating voltage is above a threshold level.

The invention discloses a train monitoring display control system and method with an automatic redundancy switching function, relates to the technical field of automatic redundancy control, and solves the problem that when a monitoring display breaks down during train operation, automatic redundancy switching of a main monitoring display system and a standby monitoring display system is difficult to realize. The technical problem that the detection safety can be improved due to the fact that a dynamic detection period is neglected during heartbeat signal detection is solved; according to the invention, hot standby redundancy is carried out on the minimum system, which is most likely to break down, of the display equipment, and when the FPGA monitors that the main control system is abnormal through the dynamic sending period of the heartbeat signal, the standby system is switched to immediately and automatically; when the main control system breaks down, the standby system is activated to take over immediately, continuous work of the monitoring displayer during train operation is ensured, and information loss or operation interruption caused by displayer faults is avoided.

The invention relates to the technical field of rail transit, in particular to a redundancy control method, system and device for vehicle-mounted operation control equipment and a medium. The vehicle-mounted double systems are independent units, the double systems and peripheral interaction data channels are independent, data interaction is periodically carried out between the main system and the standby system, various types of fault flag bits of the system are added in synchronous data of the double systems, the running condition of the opposite systems is rapidly judged, the standby system is rapidly responded to be switched into standby system running when the main system is down, and the system reliability is improved. And a 600km / h train high-speed operation switching scene is met. The automatic protection system of the rail transit train is higher in usability, safer and more reliable. The vehicle-mounted double systems are independent units and can normally communicate with peripherals when being independently used, train operation is controlled, and the situation that train operation is affected due to abnormal communication of the vehicle-mounted double systems caused by one-way interference is avoided. According to the method and the device, the conditions of standby system downtime and hot standby function failure caused by short-time communication interference, packet loss and the like can be avoided, the availability of double-system redundancy is improved, and normal operation of a train is ensured.

In the present invention, when communication is performed between two nodes by using a main path (active system) and a backup path (standby system), and network performance of each of the paths is ascertained by test packet transmission, an increase in processing load due to the test packet transmission and occurrence of communication interruption due to delay of failure detection are prevented. The test packet transmission frequency of the active system and the test packet transmission frequency of the standby system are individually and dynamically controlled. The test packet transmission frequency of the active system is set to be smaller than the test packet transmission frequency of the standby system. Constants of the transmission frequencies of the active system and the standby system are managed by using a slot schedule management table. The test packet transmission frequency of the standby system is increased when an RTT change different from a normal time is detected in the active system. When routing switching occurs, the test packet transmission frequency of the standby system is reduced in advance so that routing processing can be preferentially performed.

The invention provides a control method of a cluster type hot standby redundant system and a train, and can be applied to the technical field of vehicle control and the field of communication. The priority of a target system which the target device belongs to in the cluster type hot standby redundant system or the instruction running state of the target device is determined, the target system comprises a plurality of devices, the cluster type hot standby redundant system comprises a plurality of systems, the systems are classified into a main system and a hot standby system, the main system is used for managing communication data of a train, and the hot standby system is used for managing communication data of the train. The hot standby system is used for backing up communication data; and according to the priority or the instruction operation state, performing main-standby switching on the target system.

A patient transport apparatus includes a support structure including a base, a litter, and a lift assembly for adjusting the pose of the litter relative to the base. The apparatus also includes a battery, a primary user input device, and a controller configured to operate the lift assembly between a suspended mode and an operating mode to drive the lift assembly when a charge state of the battery is above a predetermined charge threshold. The apparatus also includes a backup system for operating the lift assembly in the suspended mode. The apparatus also includes a sensing system including at least one sensor for providing signals representative of the pose of the litter to the backup system. Based on the pose of the litter, the backup system is configured to operate the lift assembly to prevent collisions of the litter with floor surfaces during operation in the suspended mode.

The invention discloses a substation disconnecting switch position confirmation method and system, and the method comprises the steps: monitoring the position of a disconnecting switch in real time through arranging photoelectric, magnetic and position sensors, and employing a redundancy design; performing fusion analysis on the data of the plurality of sensors through an artificial intelligence algorithm, optimizing the data and judging the state of the disconnecting switch; the environment monitoring system monitors the environment change of the transformer substation in real time and automatically adjusts the sensitivity and the working mode of the sensor; the redundant sensor and the communication network are automatically switched to the standby system when the main sensor or the network fails; real-time position data of the disconnecting switch is transmitted to a dispatching center through a remote monitoring system, and an alarm is given and fault information is generated when abnormity occurs; the system has automatic maintenance and self-calibration functions, and self-calibration is triggered during regular self-inspection or abnormity; according to the substation disconnecting switch position confirmation method and system, intelligent sensors, redundancy design and artificial intelligence analysis technologies are introduced, and the accuracy and automation level of the system are improved.

The invention provides a vehicle-mounted instrument redundancy switching method and device, equipment and a medium, and the method comprises the steps: obtaining multi-dimensional time sequence data of a vehicle-mounted instrument in a vehicle operation system, generating a fault probability prediction value of the vehicle operation system in a future preset time period through a preset prediction model, calculating a system health degree score value in combination with the multi-dimensional characteristic parameters and a preset weight thereof, determining a health level in combination with a fault probability predicted value, triggering a redundancy operation instruction based on the health level, executing preloading control of the standby system or atomic switching operation of the main and standby systems, and realizing predictive fault response and hierarchical accurate switching; according to the method, the problems of switching lag, single decision basis and resource waste in the traditional technology are effectively solved, and the reliability and the driving safety of the vehicle-mounted instrument are remarkably improved.

The invention discloses a master-slave synchronization method based on Ethernet UDP (User Datagram Protocol) communication, which comprises the following steps: firstly, respectively establishing a communication node according to master and slave attributes of a CPU (Central Processing Unit) board, the master system is MASTER, the standby system is SLAVE, and the master and slave boards carry out data interaction through respective communication nodes; in order to ensure the consistency of a master cycle and a slave cycle, the message-oriented middleware realizes a barrier synchronization function, and the barrier synchronization adopts an SLAVE blocking and MASTER timeout waiting mechanism. The UDP based on the Ethernet is adopted for master-slave communication, and compared with CAN and RS-485 communication, the problems of high electromagnetic interference, low transmission rate and narrow broadband are solved. Master-slave data exchange is achieved through system software, and dependence of interlocking software on hardware is avoided. By setting a mechanism of slave system blocking and master system timeout waiting, master-slave synchronous operation is realized.

The invention discloses a train control on-board subsystem reliability analysis method, system, equipment and medium, and relates to the technical field of reliability analysis, and the method comprises the steps: carrying out the modeling of the service life of an on-board equipment unit based on Weibull distribution; for a cold standby structure of the vehicle-mounted equipment, an active switching strategy is adopted to switch a main system and a standby system, and the influence of the active switching strategy on unit reliability is quantified through a virtual age; considering the influence of the common cause failure on the redundant structure, and modeling the common cause failure by using a beta factor model; the influence of personnel operation on the system reliability is considered, the success probability of personnel operation is analyzed, and the unit reliability is calculated; and establishing a random Petri net model of the vehicle-mounted system, performing simulation by adopting a Monte Carlo method, and generating system life data and system reliability parameters. According to the method, the action mechanism of active switching for improving the reliability of the system is analyzed, common cause failure and human cause are considered, and the reliability of the system can be improved by improving the reliability of the cold standby unit.

The invention discloses an intelligent new energy automobile standby cable with a main cable anomaly detection function, which comprises a charging pile, a pair of charging cables, a charging head, an adjusting structure, an anomaly detection module, a main control module and an anomaly alarm module, and is characterized in that the pair of charging cables is mounted on the charging pile through the adjusting structure; the charging pile is installed on the charging cable, the charging head is installed on the charging cable, and the abnormity detection module, the main control module and the abnormity alarm module are installed on the inner sides of the charging pile, the charging cable and the charging head. Excellent engineering reliability is shown; seamless switching of the double-charging-cable redundant system is achieved through an adjusting assembly, when current carrying of a main cable is abnormal, an electromagnetic driving mechanism is linked with an I-shaped stretching rod to trigger an overturning metal plate to move, switching of a conductive path to a standby system is completed within 0.3 second, and power supply continuity is guaranteed in cooperation with a double-path conductive channel.

The utility model discloses a redundant standby system of a UPS (Uninterrupted Power Supply). The system comprises a standby UPS power supply side low-voltage power distribution cabinet, a standby UPS and a battery pack thereof, a standby UPS load side low-voltage power distribution cabinet, a main UPS power supply side low-voltage power distribution cabinet, a main UPS and a battery pack thereof, a main UPS load side low-voltage power distribution cabinet, a 1A # transformer low-voltage side power distribution cabinet horizontal bus, a 1B # transformer low-voltage side power distribution cabinet horizontal bus and a bypass power supply bus. A main UPS power supply side power distribution cabinet internal synchronization detection device; and a main UPS load side power distribution cabinet internal synchronization detection device. An auxiliary control system can be built, misoperation accidents can be avoided to a great extent, and the intelligent degree of operation and maintenance is improved. According to the invention, when a plurality of UPSs exist, a single standby UPS can provide standby for the plurality of UPSs.

Disclosed in the present disclosure are a data recovery method and apparatus for a dual-machine hot standby system, and a medium, which are applicable to the field of data processing. In the method, a main service running time period and a start time period are determined by means of a backed-up start-stop operation record file, and when the start time period is in the main service running time period, it indicates that a split-brain phenomenon possibly occurs in a dual-machine hot standby; and record information of a database backup record file within an initial split-brain time is further read, so as to determine the possibility of split-brain data, a final split-brain time is automatically determined, an Application Programming Interface (API) calling information file is read according to the final split-brain time, so as to recover data, and operation information of a system during brain splitting is automatically restored.

The invention provides a spare part optimization method, device and equipment for key parts of a centrifugal compressor and a medium. The method comprises the steps that use information of the key parts of a key part standby system of the centrifugal compressor in the current use state and spare part information of the key parts in the current standby state are obtained; when the number of the spare parts is smaller than a preset value, using information of the key parts in the current using state and spare part information of the key parts in the current standby state are input into a spare part optimization model, and the spare part optimization model outputs spare part purchasing conditions of the key parts of the key part standby system; the spare part optimization model comprises an average cost rate calculation model, a reliability evaluation model and constraint conditions of the key part standby system. On the premise of ensuring the reliability requirement of the system, the ordering quantity and ordering time interval of the spare parts are optimized, and the inventory cost and the management cost are reduced.

A code processing system (100) is provided with an operating system (30) and a standby system (40). The operating system (30) and the standby system (40) are each configured so as to generate a multi-bit user code (12) when a code request from a user terminal (11) is received. The user code (12) includes a system code unique to a system (30, 40) that generates the user code (12) in a prescribed bit. The user code (12) generated by the working class system (30) is a working class code, and the user code (12) generated by the standby class system (40) is a standby class code. The code processing system (100) is configured so as to transmit, to a user terminal (11), either a working-class code or a standby-class code on the basis of error information in the working-class system (30).

To allow an abnormality due to a mistake in connection or the like of a transmission line in a relay transmission section to be quickly determined by a simple method in a system including an active system and a standby system.SOLUTION: A signal transmitting device is provided in either an active network or a standby network. The signal transmitting device includes: a system information setting unit that performs system settings; a pilot signal setting unit that determines the frequency of a pilot signal for monitoring or the frequency of a modulated signal to be carried by the pilot signal based on information of the system settings performed by the system information setting unit; and a pilot signal generation unit that generates a pilot signal based on the frequency determined by the pilot signal setting unit.SELECTED DRAWING: Figure 1

The invention provides a main and standby switching method and system for a water dispatching automation system, and relates to the field of water dispatching automation and data processing. The method aims at solving the problems that in an existing method, business event flow sequential logic is ignored, and instructions are prone to being disordered and lost due to switching. The method is applied to a framework comprising a main system, a standby system and a time source, and the main system and the standby system are synchronous in time. When executing the water dispatching control instruction, the main system generates a water dispatching event containing instruction content and a timestamp, and stores the water dispatching event in a shared event sequence cache region; the standby system periodically pulls an event, simulates execution after verification by a business rule engine in combination with an associated context, constructs an event node tree diagram with a weight, and prunes based on an actual result; and when the switching is triggered, comparing the actual result of the main system with the execution sequence of the standby system, matching an adaptive path, and avoiding error instruction marks. The method guarantees the time sequence consistency and logic correctness of the event flow, achieves the intelligent seamless switching of a main system and a standby system, and guarantees the continuous and stable operation of a water dispatching service.

The present disclosure automatically allows a user to make voice call on a Long-Term Evolution (LTE) network when a User Equipment (UE) (104, 310, 410, 510) is not capable to make voice call on a 5G Standalone (SA) network via redirection or via Handover. The present disclosure allows the user to release the 5G SA network and redirect to measured Evolved Universal Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN) of LTE band to proceed an Evolved Packet System Fallback (EPSFB) call successfully, if there is unprecedented failure during the handover procedure. The present disclosure allows the user to redirect to LTE Radio Access Technology (RAT) on default frequency band configured in gNodeB (gNB) ((320, 420, 520) during an emergency voice call or when B1 measurement delayed or not received, or while the UE (104, 310, 410, 510) is active with other procedure or stuck in race conditions.

A backup method, apparatus, and device for an oil pump motor controller, and a storage medium. The backup method for an oil pump motor controller comprises: determining whether OTA upgrade information of a controller has been obtained (S10); upon obtaining the OTA upgrade information of the controller, performing an OTA upgrade on a primary system currently used by the controller, and detecting whether the upgrade of the primary system is completed (S20); and if the upgrade of the primary system is not completed, switching the primary system currently used by the controller to a backup system that occupies less memory than the primary system, so as to perform drive control of an oil pump motor (S30). A simple backup system is provided during an OTA upgrade of an oil pump motor controller of a vehicle, so that when the OTA upgrade fails, the backup system is controlled to be put into operation to ensure vehicle drivability, thereby avoiding breakdowns caused by the upgrade failure. Meanwhile, the backup scheme is implemented with low memory occupancy, thereby reducing the material cost of a memory chip of the controller.

The invention discloses a rapid switching method of a hydraulic standby system and related equipment, and relates to the technical field of hydraulic transmission and control. The method comprises the steps that real-time pressure data of a main oil supply pipeline of a hydraulic system are obtained; on the basis of a comparison result of the real-time pressure data and a preset pressure threshold value, whether a main pressure reducing valve set of the hydraulic system fails or not is determined; under the condition that the main pressure reducing valve group fails, a pressure reducing valve switching instruction is generated based on preset delay time; and based on the switching instruction, an electromagnetic valve is controlled to switch a main pressure reducing valve group to a standby pressure reducing valve group so as to maintain the pressure stability of the hydraulic system.

The invention discloses an intelligent diagnosis method and system based on a dispatching automation master station, and relates to the technical field of dispatching automation system intelligent diagnosis, and the method comprises the steps: collecting parameters through a predefined template, and detecting an abnormal item; analyzing the first data through a first rule; and performing consistency verification on the program, and performing comparison verification on the database and the main and standby systems. According to the intelligent diagnosis method based on the dispatching automation master station, the operation state of each node of the dispatching automation system is comprehensively monitored, the inspection efficiency and accuracy are improved, the potential hidden danger of the system is quantitatively analyzed, the operation risk caused by the unknown hidden danger is reduced, and the system safety is improved. Compared with the prior art, the consistency and safety of the system in the operation process are guaranteed through comparative analysis of the consistency of different node versions in the system, the potential safety hazards of system operation are reduced through centralized summarization and remarkable identification of abnormal items found in system inspection, and better effects are achieved in the aspects of inspection efficiency, accuracy and consistency.

This invention discloses a multi-source thermally coupled electrolytic hydrogen production long-term thermal standby system and control method, belonging to the field of electrolytic hydrogen production technology. In this invention, the alkali solution in the alkali solution circulation loop of the electrolytic hydrogen production module exchanges heat with the circulating medium flowing through the first heat exchange unit and then returns to the electrolytic cell; the circulating medium flows back to the heat storage tank; a new energy auxiliary heating module and an electric-driven heat pump module are used to heat the circulating medium; an intelligent control module is connected to a first temperature sensor signal used to monitor the alkali solution temperature, and is used to control the operation of the circulating medium in the circulation pipeline according to the monitored temperature when the electrolytic cell is running; after the electrolytic cell is shut down, the new energy auxiliary heating module and / or the electric-driven heat pump module are controlled to start and stop according to the monitored temperature; before the electrolytic cell is started, the new energy auxiliary heating module and / or the electric-driven heat pump module are controlled to heat the circulating medium. This invention solves the problems of low energy efficiency and slow start-up in electrolytic hydrogen production systems, and comprehensively improves energy efficiency and start-up response speed.

The invention provides a main and standby system switching method, device and system, and the method comprises the steps: starting a first control system at a first time point, and building the system communication between the first control system and a digital input / output board; a second control system is started at a second time point, and the second time point is later than the first time point; under the condition that the system communication is successfully created, determining the first control system as a main system, determining the second control system as a standby system, and synchronizing service data of the main system in the standby system; and switching the first control system to a standby system and switching the second control system to a main system when it is detected that the service data synchronization fails and the communication state of the system communication is disconnected. According to the method, the digital input and output board is introduced, and when to switch the main system and the standby system is judged through communication between the digital input and output board and the first control system as well as the second control system, so that the driving safety of the target train is ensured, and the switching cost of the main system and the standby system is reduced.

The utility model relates to an intelligent lock control device with double systems. The intelligent lock control device comprises a front plate information acquisition control system, a rear plate information acquisition control system and a control system, wherein the front plate information acquisition control system is used for acquiring unlocking information (fingerprints, passwords, human faces or palm veins) when a user is outside a door; the rear plate information acquisition control system is used for acquiring unlocking and locking information when a user is inside a door and wireless unlocking information (Bluetooth unlocking and WiFi unlocking) when the user is outside the door; the front plate information acquisition control system is used as a preferred system to judge and process the information and notify the rear plate control system to open a door according to a processing result; under normal conditions, the back plate information acquisition control system only serves as an acquisition control unit to feed back or execute instructions of the front plate system and does not make judgment. When the front board control system is damaged or out of order, the rear board control system serves as a standby system to be started, the judgment function of the front board is taken over, and a switch lock command is executed. Through the arrangement, the problem that the whole door lock cannot be opened and closed due to damage of the front plate or abnormal communication of the front plate and the rear plate can be solved.

The invention discloses a train-ground good control method and system for regenerative braking of an urban rail train. A hybrid energy storage framework comprising an energy type ground energy storage system and an energy type railway energy storage system is evaluated. In the planning stage, a multi-objective optimization algorithm is adopted for coordinating and searching for capacity configuration of an optimal vehicle-ground standby system, initial investment is balanced, and energy conservation and high efficiency are achieved. And real-time and good charging time table control: during operation, setting and accessing mutually independent voltage threshold groups with strategic differences for the vehicle-ground energy storage system, and constructing a priority scheduling priority. And online self-adaptive threshold correction: according to the actual energy variation of the energy storage system monitored and counted in real time, dynamically parameters the threshold reference value so as to adapt to the working condition change. Through vehicle-ground coordination, the emergency of a single power grid scheme is overcome, the comprehensive benefit of regenerated energy can be obviously improved, the obtained power grid voltage stability is optimized, and the power grid voltage stability is enhanced.

The invention provides a signal system and a control right switching method thereof. The system comprises a first train control subsystem, a second train control subsystem and a fusion interface unit, the first train control subsystem comprises interlocking equipment; the second train control subsystem comprises a resource controller and an object controller; the fusion interface unit comprises a first interface for connecting the interlocking equipment and the resource controller, a second interface for connecting the interlocking equipment and the object controller, and a third interface for connecting the resource controller and the object controller; the signal system is configured as follows: one subsystem is used as a main system, the other subsystem is used as a standby system, when the main system needs to be switched, a control right state can be handed over through the first interface, and the standby system can monitor and control trackside equipment through the second interface and the third interface. And control right switching from the main system to the standby system is completed. After the main system breaks down, the standby system can be rapidly switched to continue operation, and the operation influence caused by the signal system fault is reduced.