Fusion method for layered structure data of wireless sensor network

A wireless sensor and data fusion technology, applied in the transmission system, electrical components, etc., can solve the problems of high complexity of data processing, difficult control of stable state, and general fusion effect, so as to reduce the amount of information communication, improve economic and social benefits, The effect of prolonging the life cycle

Inactive Publication Date: 2012-04-25
INST OF SOFTWARE - CHINESE ACAD OF SCI
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Problems solved by technology

This strategy can effectively suppress the timeout of data packets, but its fusion effect is average, and it is difficult to control when it can reach a stable state
[0004] Therefore, the main problems of the current data fusion method of wireless sensor network are poor fusion effect and high complexity of data processing.

Method used

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  • Fusion method for layered structure data of wireless sensor network
  • Fusion method for layered structure data of wireless sensor network
  • Fusion method for layered structure data of wireless sensor network

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Embodiment Construction

[0033] The specific implementation of the data fusion method for the wireless sensor network of the present invention is divided into two stages, which are called the initialization stage and the actual operation stage.

[0034] Now in conjunction with the method process of the present invention Figure 5 To describe the specific implementation, the present invention completes the determination of the critical fusion layer and the release of the calculation results in the initialization phase. In the deployment stage of the network, the maximum possible number of layers is predictable, assuming that the upper limit N is not exceeded. Firstly, a set of test experiments is carried out, and the critical fusion layer is set to a certain value Hc from 1 to N, and the aggregation node sends it to each node through the whole network broadcast. For example, first broadcast the critical fusion layer to the whole network The initial value of is 1, and then the critical fusion layer is ...

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Abstract

The invention discloses a layered structure data fusion method of a radio sensor network. The method comprises the following steps: through setting a critical fusion layer, a node (including a node on the edge of the critical fusion layer) in the critical fusion layer calculates fusion waiting time according to the value of the critical fusion layer and the layer number where the node is positioned; and then the mode carries out data fusion to total data received within the fusion waiting time. The method has the advantages of low data processing complexity, simpler implementation of the fusion time distribution method, and remarkable fusion effect.

Description

technical field [0001] The invention relates to a data fusion method, in particular to a wireless sensor network hierarchical structure data fusion method, which belongs to the field of wireless sensor networks. Background technique [0002] A wireless sensor network is composed of a large number of sensing nodes, which transmit information hop by hop through wireless communication, and cooperate to complete the task of information collection in the covered area. The information has a certain real-time nature, that is, it is required to be transmitted to the user within a certain period of time. The nodes of the sensor network are usually powered by batteries, and the energy consumption must be reduced as much as possible. The data fusion method is a method for the transit node to use the redundancy of information to process multiple pieces of information to obtain one or a small amount of information to reduce network communication overhead. The data fusion method reduces...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08
Inventor 周新运孙利民皇甫伟
Owner INST OF SOFTWARE - CHINESE ACAD OF SCI
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