Development method of Sink nodes of mobile wireless sensor network (WSN)

Abstract

The invention discloses a development method of Sink nodes of a mobile wireless sensor network (WSN), belongs to the field of data aggregation of the WSN, and mainly solves the problems that during a traditional data aggregation of a WSN, the Sink nodes are difficult to deploy, sensing fields are not communicated, energy easy to remain in the fields are unbalanced, and the like. The development method is characterized in that the development method comprises the steps that (1) a miniature four-rotor aircraft is adopted as a moving platform of the mobile Sink nodes; (2) the path obtained by the optimal Hamilton path seeking algorithm is adopted as a flight trajectory of the mobile Sink nodes; (3) the data transmission manner of the WSN is fusion-storage-forwarding; and (4) a data collection hovering point is adjusted through measuring the quality of links between the Sink nodes and sensing nodes in a real time manner. The development method has application advantages in the aspects of disaster and environment monitoring, wide animal habit monitoring, intrusion detection, safety monitoring, and the like.

Description

technical field [0001] The invention belongs to the field of wireless sensor network data aggregation, in particular to a method for developing a sink node of a mobile wireless sensor network. Background technique [0002] Wireless Sensor Network (WSN) integrates technologies such as sensors, embedded computing, modern networks and wireless communications, and distributed information processing, enabling people to obtain a large amount of detailed and reliable information at any time, place, and in any environment. , so as to truly realize the "everywhere" computing concept. A wireless sensor network is usually a three-level network system composed of sensor nodes, sink nodes and management nodes. Generally speaking, the purpose of a sensor network is to collect and transmit data to the outside world. In a sensor network, this role node is called a data sink node. In practical applications, a complete wireless sensor network is often divided into multiple small networks (...

AI Technical Summary

Problems solved by technology

Compared with the mobile sink, the fixedly deployed sink node has the following problems: Constrained by factors such as energy and geographical conditions, or in the event of war or disaster, the deployment of sink nodes is more difficult than the deployment of sensing nodes, and it is not easy to replace when a fault occurs or the energy is exhausted in advance; Sensing data cannot reach the Sink in one hop, the multi-hop mechanism and the establishment of the backbone route bring the energy consumption imbalance of the entire network, resulting in holes and hotspots problems

For example, wireless sensor networks are deployed in areas with severe air pollution for environmental monitoring, and people cannot approach the network area. Once the aggregation node fails or the network is blocked, the traditional aggregation node cannot be replaced, and the backbone network communication is destroyed. The network is tantamount to destruction; another example, the two subnets of the wireless sensor network are deployed on both sides of a mountain, and the data of the two networks cannot be integrated due to the unreachable communication signals.

Without a better solution in these cases, the entire network will be paralyzed

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