6 results about "Fault tolerance" patented technology

The invention relates to a multi-sink deployment and fault tolerance method for a wireless sensor network. A multi-sink optimal deployment method based on improved particle swarm optimization clustering is firstly brought forward, the improved particle swarm optimization is combined with K-means clustering, clustering and partitioning are carried out on all sensor nodes in a network area, the multiple sink nodes are deployed in the center of each cluster respectively, and thus, effects of reasonable partitioning and optimal multi-sink node deployment of the network are achieved. In addition, in view of a condition in which a certain sink node fails in the multi-sink network, a routing algorithm with a fault tolerance mechanism is brought forward, a fault tolerance mechanism with multi-path routing is adopted, two paths from a source node to different sink nodes are built, and when a certain sink node fails, alternate routing is activated. Through deploying multiple sink nodes in the wireless sensor network, the network reliability can be improved, when one sink node fails, other several sink nodes can replace the node for work, reliable operation of the network is ensured, and the service life of the network is prolonged.

The invention discloses an NTB-based fault-tolerance method on multi-controller communication, comprising the following steps: when inspecting out abnormity in logical link, transferring port reset and establish a new first logic link; inspecting if there exists any abnormity in the first logic link; if an abnormity exists, transferring chip reset and establishing a new second logic link; thus, through two-step reset, which means to operate small-scale port reset first, if there still exists abnormity in logic link, then operating a large-scale chip reset; in this way, the method reduces impacts the reset operation brings to other components in the system; besides, the invention further discloses a NTB-based fault-tolerant device on multi-controller communication and NTB facility which have the same beneficial effects.

The invention provides a communication topology fault tolerance optimization method and apparatus in cooperative formation of a plurality of unmanned aerial vehicles. The method comprises the following steps: S1, obtaining a formation communication graph according to a three-dimensional durable formation needing to be formed by the cooperative formation of the plurality of unmanned aerial vehicles; S2, in the case of a communication fault of the cooperative formation of the plurality of unmanned aerial vehicles, deleting a communication fault arc or a communication fault node in the formation communication graph to obtain a first reconstruction formation communication graph; S3, obtaining a three-dimensional optimal durable graph corresponding to the first reconstruction formation communication graph according to a communication topology reconstruction algorithm, namely first optimal reconstruction communication topology; and S4, obtaining second optimal reconstruction communication topology satisfying the preset condition l n > V!l, namely re-optimized communication topology of the cooperative formation of the plurality of unmanned aerial vehicles, according to the first optimal reconstruction communication topology, each position configuration of the cooperative formation of the plurality of unmanned aerial vehicles and the communication topology reconstruction algorithm.

The invention relates to a lantern decorative lighting integrating with a redundancy fault-tolerance drive control chip, comprising a hose lamp, a framework, an upper supporting part and a lower supporting part. The framework is connected to the upper supporting part and the lower supporting part; the hose lamp is arranged on the framework; the upper supporting part and the lower supporting part are butterfly-shaped framework disks in multijaw shapes and are respectively provided with an upper adjusting connecting rod and a lower adjusting connecting rod; the hose tube is internally provided with a luminescence unit which comprises a PCB; at least one decorative lighting transmission driving control chip, at least one LED, a power supply anode line, a power supply cathode line and at least two signal control line transmission circuits are arranged on the PCB; the decorative lighting transmission driving control chip on the PCB is the redundancy fault-tolerance drive control chip which is provided with at least two parallel signal control line transmission channels; the transmission channels are connected by a line; control signals are input into the redundancy fault-tolerance drive control chip through the circuit; and the redundancy fault-tolerance drive control chip directly drives and controls an LED display unit on the PCB to illuminate.

The invention discloses a control method and system for decentralized storage and related equipment. The method comprises the steps that a first block chain node monitors whether a preset condition about a target file is met or not; if it is monitored that a preset condition about the target file is met, canceling a process of deducting a first mortgage layer unit mapped by the target file; otherwise, the process of deducting the first mortgage layer unit mapped by the target file continues to execute. According to the technical scheme, the mortgage deduction method with the fault tolerance mechanism is provided, the decentralized storage network can be perfected, and the network cooperation efficiency is improved.