A WSN Data Acquisition Method Based on Region Growing Method

Abstract

The invention relates to a WSN (Wireless Sensor Network) data acquisition method based on a region growing method, which comprises the steps of: S1, carrying out assuming and defining on a WSN; S2, carrying out selection on region growing method seed nodes by adopting a random number method, and carrying out growing on similar regions by using adjacent sensor nodes as neighborhoods of the region growing method so as to complete partitioning of the similar regions; S3, proposing a proper curve similarity description method, and representing representative nodes in sub regions with nodes with high similarities; and S4, carrying out iteration on an algorithm. In order to enable data acquired by the representative nodes to more accurately represent information of the sub regions and balance energy consumption of the sensor nodes, after the algorithm adopted by the method is operated for a certain time, a next round of data acquisition process can be carried out again, i.e., partitioning of the similar regions and selection of the representative nodes are carried out again. The method disclosed by the invention can ensure that a great volume of redundant data is reduced in a case that region monitoring is normal, and thus, life time of the sensor network can be greatly prolonged.

Description

technical field [0001] The invention relates to the field of wireless sensor network lifetime, in particular to a WSN data collection method based on a region growing method. Background technique [0002] Wireless sensor network (WSN) is a multi-hop self-organizing network formed by a large number of cheap micro sensor nodes deployed in the monitoring area through wireless communication. Its main function is data collection and monitoring, and it is widely used in various fields. Generally, the sensor network deployment area has a complex environment, it is difficult to replace the battery of the sensor node, and it is easy to die when the node power supply is limited, especially the large-scale sensor network needs to collect and forward a large amount of data. However, the data in adjacent areas are similar, so the sensor network will collect a large amount of redundant data, and the multi-hop transmission of a large amount of data in the network can easily lead to the ene...

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Problems solved by technology

[0003] In order to overcome the similarity of the data in the adjacent areas of the existing sensor network, which leads to the collection of a large amount of redundant data, and the multi-hop transmission of a large amount of data in the network, it is easy to cause the sensor network to run out of energy and die prematurely. The present invention proposes a A WSN data acquisition method based on the region growing method (DAA-RGM) that reduces the collection of a large number of redundant data and prolongs the survival time of the sensor network during data collection

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