Method and system for collecting network data of wireless sensor

Abstract

The embodiment of the invention discloses a method for collecting network data of a wireless sensor. The method comprises the following steps: hop count information of a network node of the wireless sensor is acquired; after receiving a data packet transmitted by a previous node, a current node with the hop count which is not smaller than that of the previous node superimpose self collected data onto the data packet by taking the L as a model, and then sends the superimposed data packet to next node, the steps are executed in a repeated manner until the next node is an aggregation node; the data packet carries node collected data, and the L is data system adopted; and after the aggregation node receives the data packet, the data packet is analyzed on the basis of compressed sensing theory to obtain data collected by all nodes. The embodiment of the invention further discloses a system for collecting network data of the wireless sensor. The embodiment of the invention takes the requirements on the two aspects of monitoring accuracy and prolonging network service life into consideration.

Description

technical field [0001] The present application relates to the technical field of wireless sensor networks, in particular to a method for collecting data in wireless sensor networks and a corresponding system. Background technique [0002] A wireless sensor network (WSN) is composed of a large number of cheap micro-sensor nodes deployed in the monitoring area and a fusion center (SINK node, also known as a convergence node) at the core of the network. It forms a multi-hop network through wireless communication. self-organizing network system. WSN networks are widely used in environmental monitoring, forest fire prevention, military applications and other fields. In order to realize the monitoring of the monitoring area, it is necessary to collect a large amount of information of the monitoring object through the deployed sensor nodes, and the information is transmitted to the fusion center of the WSN network node by node, and the fusion center displays the collected WSN data...

AI Technical Summary

Problems solved by technology

The former collects a large amount of data and can realize accurate monitoring, but the amount of data transmission increases accordingly, and the transmission consumes more energy resources, which generally reduces the service life of the WSN network with limited energy resources.

The latter processes the collected data, reduces the amount of data transmission, and prolongs the service life of the WSN network, but cannot achieve accurate monitoring

It can be seen that the existing technology does not have flexibility, and there is a problem of "concerning one thing and losing another", and cannot take into account the requirements of monitoring accuracy and prolonging the service life of the network.

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