Wireless sensor network multi-source data fusion method based on queries

Abstract

The invention relates to a wireless sensor network multi-source data fusion method based on queries. The wireless sensor network multi-source data fusion method based on the queries comprises clustering, interest spreading and data transmission. In the clustering process, node residual energy to cluster, density of a node placed area and the distance from cluster heads to a base station are utilized. In the interest spreading process, a sink node firstly spread interest news to all cluster heads which then determine whether interest is spread inside clusters according to actual conditions. In the data transmission process, a neighbor node large in priority is chosen as a next jumping node. A priority function enables query data to be transmitted to the sink node along the route which is small in energy consumption, large in residual energy and short in distance according to introducing of neighbor node positions, the fact that whether introduced nodes are source nodes or the cluster heads, residual energy, communication cost of two nodes and the like, and data fusion is performed on the data intersecting position. The wireless sensor network multi-source data fusion method based on the queries can effectively balance node energy consumption in networks, improve energy using efficiency and prolong a network life cycle.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor networks, and relates to a query-based multi-source data fusion method of wireless sensor networks. Background technique [0002] Wireless Sensor Network (WSN) is a new type of data-centric wireless network, which integrates sensor technology, wireless communication technology and database processing technology, and is composed of nodes with sensing, computing and communication capabilities. The main function is to collect the information of the monitoring area where the sensor node is located, and transmit it to the sink node after certain processing to realize the monitoring of the physical world. It has been widely used in many fields such as military, industry, agriculture, environment, medical monitoring, and intelligent furniture systems. [0003] The routing protocol is responsible for forwarding data packets from the source node to the destination node through the network. It main...

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Problems solved by technology

[0009] The purpose of the present invention is to overcome the problems of large energy consumption and uneven energy consumption of nodes in the existing data query routing protocol, and provide a query-based multi-source data fusion method for wireless sensor networks. The huge energy consumption brought about, and then by omitting the gradient establishment and path strengthening stages, to reduce the energy consumption and network delay problems caused by establishing gradients and path strengthening, thus effectively extending the network life cycle

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