16 results about "Standby redundancy" patented technology

The invention discloses an idle computing power resource dynamic scheduling method based on node allocation, and relates to the technical field of node allocation. Sequentially executing to-be-scheduled calculation tasks to perform lightweight simulation execution to generate task feature vectors, collecting idle node hardware architecture feature data to generate node hardware feature tags, calculating a matching degree based on a bidirectional adaptability evaluation matrix, allocating main execution nodes, and performing task scheduling; the redundancy is determined by combining the task key level and the overall reputation score of the node pool, the standby redundant nodes are allocated for parallel execution, and the closed-loop scheduling process of the consensus verification window period and the arbitration mechanism is synchronously set, so that compared with the prior art, the accuracy of idle-time computing power scheduling and the credibility of an execution result can be improved, and the scheduling efficiency is improved. Therefore, the problems of low resource utilization rate and high error rate of calculation results caused by disjunction of task and node adaptation and lack of effective verification in the execution process in the existing idle computing power scheduling can be solved.

The invention provides an intelligent circuit breaker fault detection and maintenance method based on double MCUs, and the method achieves the automatic uninterrupted switching when a single MCU breaks down through the main and standby redundancy design, avoids the system breakdown, and greatly improves the usability and reliability. Quantitative scoring of the state of the main control MCU is achieved through a health assessment self-checking algorithm, and the accuracy of fault judgment is guaranteed. Through an intelligent switching arbitration mechanism, on the basis of switching probability calculation and confidence evaluation (health degree stability), a secondary confirmation mechanism is matched, and the error switching risk is effectively reduced. Line fault and MCU hardware fault detection is supported, and fault self-healing is achieved. And after the faulted MCU is recovered, the master and standby roles are automatically returned, so that the manual operation and maintenance cost is reduced.

This application proposes a fault redundancy switching method and system for urban rail transit switch machines. Belonging to the field of switch machine fault diagnosis, the method includes: determining whether a switch machine has malfunctioned according to preset unified rules; when a fault is determined to have occurred, collecting relay timing information and indicated voltage information during the switch machine's operation; based on the relay timing information and indicated voltage information, determining whether the fault is indoor or outdoor according to preset diagnostic logic; if it is an indoor fault, performing two-level safety verification: the first level verifies and generates a switching request, and the second level verifies the interlocking safety conditions; only when both levels of verification pass, driving the redundancy switching circuit to switch the control circuit from the primary circuit to the backup redundant circuit; if it is an outdoor fault, generating outdoor fault alarm information. It can accurately locate indoor and outdoor faults and automatically perform safe redundancy switching in the event of an indoor fault.

The invention discloses a shunting monitoring system for a railway, and belongs to the technical field of railway safety monitoring, the shunting monitoring system comprises a vehicle-mounted device and a ground device, the vehicle-mounted device comprises a dispatching and monitoring host and a locomotive sensor, the ground device comprises a ground sensor, the locomotive sensor is in communication connection with the ground sensor, and the locomotive sensor is in communication connection with the ground sensor. The dispatching and monitoring host comprises a monitoring host; and the case is provided with a plurality of function reservation positions. Compared with the prior art, the shunting monitoring system for the railway has the advantages that full-link redundancy from data processing, communication to power supply is constructed through hot standby redundancy of the information processing unit, double-set parallel work of the machine sensing communication unit, a double-path power supply and a standby battery, the fault-tolerant capability of the system is greatly improved, and the uninterrupted operation time of the system is greatly prolonged. Key vehicle-ground communication data are encrypted by adopting an industrial-grade AES encryption algorithm, so that the data are effectively prevented from being maliciously stolen or tampered in a transmission process, and the safety of a shunting instruction is guaranteed.

The utility model relates to the technical field of rail transit power supply systems, and discloses a main wiring circuit for enhancing the reliability of an urban rail transit direct current power supply system, which comprises a main / standby medium-voltage alternating current bus, a main / standby direct current bus, a transformer unit, a medium-voltage power supply unit, a direct current power supply unit and a rectifying unit. Through the designed main wiring diagram of the traction substation of the power supply system, the reliability of power supply of the traction substation can be enhanced from the perspective of uninterrupted overhaul and maintenance, main and standby redundancy support and power supply system investment saving; the problems that the site selection of a traction substation is difficult, the investment is increased and the like due to the fact that an urban rail transit power supply system excessively depends on a large bilateral power supply mode to support power supply are solved, and the method has high application and popularization value in the field of urban rail transit power supply systems in China.

The present disclosure relates to a central control unit master-slave synchronization control method, device and control system, the method comprising real-time detection of state information and fault information of a master central control unit; automatic synchronization based on the state information and the fault information, which can realize synchronization consistency after seamless hot standby redundancy switching of the central control unit, effectively guaranteeing safe and reliable operation of the train.

The invention provides a current acquisition module for hot standby redundancy acquisition. The current acquisition module comprises a current sampling circuit and an MCU which are connected with a power supply loop. The current sampling circuit comprises a current sampling terminal, a first redundancy module and a second redundancy module; a precise sampling resistor R1 and a precise sampling resistor R2 are arranged in the current sampling terminal, and the R1 and the R2 are separated through an MOS tube switch U1; r1 and R2 are precision resistors and convert external current signals into voltage signals and collect the voltage signals; the current flows through the R2 to generate a sampling signal for the module to sample an actual signal; a current flows through the R1 to generate a diagnosis signal for ensuring the reliability of a sampling signal, and the two signals are transmitted to the ADC circuit in a time-sharing manner through the rear-end switching circuit and finally transmitted to the MCU.

The invention discloses a redundancy method and device of a compatible industrial data acquisition system, a medium and a product, and relates to the technical field of data processing.The method comprises the steps that a first acquisition station and a second acquisition station are started, and the first acquisition station is initially in a working state; the second acquisition station is initially in a sub-working state and acquires communication data between the first acquisition station and the second acquisition station; data information of the collection objects is obtained, wherein the data information comprises the number of the collection objects and whether the collection objects can support data collection by two or more collection stations at the same time or not; and the first acquisition station and the second acquisition station execute any one of a warm standby redundancy strategy, a hot standby redundancy strategy or a load balancing redundancy strategy according to the communication data and the data information. According to the application, the problem that the existing industrial control system cannot adaptively adjust the working strategy in the case of complex equipment is solved; the technical effects of improving the compatibility of the industrial control system and improving the reliability and efficiency of data acquisition are achieved.

This disclosure provides a control method and train for a clustered hot standby redundancy system, which can be applied to the fields of vehicle control technology and communication. The control method includes: determining the priority of the target system to which the target device belongs or the command operation status of the target device in the clustered hot standby redundancy system according to the device attributes of the target device. The target system includes multiple devices, and the clustered hot standby redundancy system includes multiple systems. The multiple systems are classified into a master system and a hot standby system. The master system is used to manage the communication data of the train, and the hot standby system is used to back up the communication data. The master and standby systems are switched according to the priority or command operation status.

The invention provides an unmanned ship energy management system and method based on a wave recording technology, and aims at ship power monitoring equipment, the state parameters of power system composition equipment are collected at high frequency through the wave recording technology, and high-frequency signals are analyzed and judged in real time to complete independent judgment of faults and real-time fault reconstruction. And automatic reconstruction and fault isolation of the power system are realized. According to the invention, a multi-channel high-frequency acquisition technology is adopted to realize limited discrimination of faults of a power system, and the defect that an existing energy management system cannot acquire transient signals is overcome. According to the invention, fault judgment is carried out through independent wave recording equipment, so that equipment fault judgment and equipment are decoupled, and self-composition equipment of a power system is not needed for judgment. According to the invention, the hot standby redundancy mode of the field control module is utilized, the control reliability is ensured, and the functions of automatic control, fault reconstruction and the like of the power system are realized.

The application discloses a kind of automatic detection and switching system of shipborne satellite communication antenna key device, belong to the field of satellite communication device automatic detection and health management of shipborne;On the basis of reliability analysis to each device of system, key device is designed with hardware hot standby redundancy, and on software, the state of each device of system is detected in various aspects such as communication, data and operating state in hierarchical manner, then, according to the actual situation and inherent attribute of system, the switching priority of equipment is set, and automatic switching is carried out in combination with equipment detection state, to realize the automatic guarantee of task under the condition of no human intervention.The method greatly improves the reliability and health management level of system.

According to the braking control, freight vehicle power supply and information management method, device and system, a real-time communication network among the devices is formed through a three-dimensional multi-dimensional communication mode or a communication technology in the three-dimensional multi-dimensional communication mode, time is calibrated through the network or a satellite and the like for synchronization, and the vehicle is provided with an electric pneumatic braking control unit, an electromagnetic valve, a pressure sensor and the like. Electric pneumatic braking control of the rolling stock is achieved through an electric signal transmission instruction, the braking and relieving time is shortened, the braking and relieving consistency is improved, meanwhile, automatic air braking is reserved, and hot standby redundancy of train braking is provided; stable and continuous power is obtained from a locomotive through a redundant through power line, or a motor is driven to generate power through rotation of wheels or axles of the locomotive, and an energy storage unit is configured to provide stable and continuous power; a vehicle information management method is provided.

The invention provides a failure line bit redundancy replacement method and device, and relates to the technical field of storage. The failure line bit redundancy replacement method comprises the following steps: configuring a preset bit sequence for current storage equipment through a first register; and selecting a target replacement method for the current storage device through the second register. Judging whether each bit line under the current storage array to be detected is in an error state or not according to a preset bit sequence; and if yes, screening a target resource partition corresponding to the bit line in the error state in a target redundant resource storage array corresponding to the current storage array to be tested, and performing redundant replacement on the bit line in the error state based on the target resource partition by using a target replacement method. On the basis, the check of the bit line under each storage array can be quickly realized, and meanwhile, the defective bit line is quickly replaced with a standby redundant resource through a freely selected replacement scheme of register configuration, so that the overall fault-tolerant capability of the storage system is improved.

According to the PLC one-main multi-standby redundancy control system and the control method thereof provided by the invention, the standby controller is set to be in the control task suspension execution state, and the control task suspension execution state is immediately switched to the control task normal execution state after the wake-up signal is received; therefore, an operating system signal waiting mechanism is applied to the one-main multi-standby redundancy control system, the CPU occupancy state approaches to zero when the standby controller is in a control task suspension execution state, resource consumption is greatly reduced, meanwhile, millisecond-level wake-up capacity is reserved, the energy saving performance of cold standby and the response speed of hot standby are both achieved, system resource consumption is greatly reduced, and the service life of the system is prolonged. Compared with a traditional hot standby scheme, energy is saved remarkably, and the service life of equipment is prolonged.

A multiple unit vehicle brake control system, comprising a brake control device (1), an operating air reservoir (21), an auxiliary air reservoir (22), an air brake valve (11) and an electro-pneumatic brake module (12), wherein the electro-pneumatic brake module (12) includes an electronic brake control unit (121), an electro-pneumatic valve (124), a changeover valve (125), a shutoff valve (127) and a two-way valve (126), and further comprises a pressure relief valve (15) and a relay valve (13). The system can switch between electro-pneumatic braking and air braking, and transmits a pre-control pressure to the relay valve by means of the two-way valve. The system integrates two braking control modes: automatic air braking and direct electro-pneumatic braking, wherein the electro-pneumatic braking serves as the main braking mode, and the automatic air braking serves as hot standby redundancy, thereby improving the braking reliability, and ensuring the operational safety of a multiple unit train.

The invention discloses a fusion equipment control method based on a rail transit network, fusion equipment and a storage medium, and relates to the technical field of rail transit trains, and the method comprises the steps: receiving a user fusion function enabling instruction, configuring rail transit networking parameters and security policy parameters of a switching chip and a firewall chip, and forming a fusion hardware architecture; analyzing a function start-stop sub-instruction in the instruction, controlling resources corresponding to the firewall module, the switch module and the dormancy non-enabled module, and outputting a function operation state; starting a main and standby redundancy configuration synchronization process according to the state, and setting a built-in related unit according to a redundancy configuration strategy to obtain a main and standby redundancy system; and in response to a system verification instruction, verifying master-slave synchronization of the configuration file and the operation event, generating a configuration adjustment strategy and optimizing the system. According to the method and the device, the fusion function starting instruction configuration parameters are received, the unused resources are dormant, and the main and standby synchronous verification is performed to optimize the rail transit system, so that the problem of poor rail transit quality is solved, and the stability of the rail transit fusion equipment is improved.