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A wireless sensor network node fusion data collection method

A wireless sensor network, data collection technology, applied in network topology, wireless communication, advanced technology, etc. Time and other issues, to achieve good reconstruction accuracy, reduce data transmission, and reduce the number of nodes

Inactive Publication Date: 2021-01-19
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its large-scale and multi-hop characteristics will generate a large number of data packets that affect network throughput, end-to-end delay and other performance; and its many-to-one transmission characteristics will lead to unbalanced network energy consumption load, the closer to the sink node ) node energy consumption is greater

Method used

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  • A wireless sensor network node fusion data collection method
  • A wireless sensor network node fusion data collection method
  • A wireless sensor network node fusion data collection method

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Embodiment Construction

[0046] like image 3 Shown, be the general flow chart of the present invention, whole flow chart is divided into 5 big steps, now in conjunction with image 3 The specific embodiment of the present invention will be described in detail.

[0047] Step 1, using hybrid compressed sensing to collect the data set required for principal component analysis.

[0048] Hybrid compressed sensing divides the nodes of the entire network into two parts, which are forwarding nodes and fusion nodes. The following has a lot to do with it. In order to reduce the amount of data sent across the network and at the same time ensure the data reconstruction accuracy of hybrid compressed sensing, M=35%N is generally set. After the value of M is determined, the node type can be determined according to formula (1). After starting hybrid compressed sensing data collection, the number of data packets that node i needs to send to downstream nodes is:

[0049]

[0050] In the formula, s i the number ...

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Abstract

The invention provides a wireless sensor network node fused data collection method. According to the method, a mathematic model of a variable wireless sensor network data transmission quantity is taken as the basis, characteristics of energy finiteness, communication finiteness, data redundancy and the like in a wireless sensor network actual operating procedure are considered, a data fusion method of a wireless sensor network and router selection and data transmission sequences are taken as consideration elements, compressive sensing, principal component analysis and frame potential are utilized to reduce an amount of nodes involving in data collection, and 'from top to bottom' and 'from bottom to top' algorithms define a transmission router and a transmission sequence, so that optimization on a network data transmission quantity is implemented, integral energy consumption of a network during data transmission is reduced, and precision of data reconstruction is ensured.

Description

technical field [0001] The invention relates to a data collection method based on wireless sensor network node selection, which selects representative nodes through compressed sensing, principal component analysis and frame potential principles to reduce the number of nodes participating in data collection in the network, and uses routing trees to collect representative nodes. Node data, the present invention can effectively reduce the amount of network data transmission. [0002] The present invention comprises the following steps: 1) collecting sensor data within a period of time by hybrid compressed sensing technology; 2) designing a sparse matrix and a sparse observation matrix by combining compressed sensing with principal component analysis (PCA) and frame potential (FP), And determine the representative node to participate in data collection; 3) Use the "top-to-bottom" order to construct the fusion data transmission routing tree; 4) The transmission order of data on the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/04H04W40/32H04W84/18
CPCH04W40/04H04W40/32H04W84/18Y02D30/70
Inventor 谢成阳牛玉刚邹媛媛贾廷纲王少波
Owner EAST CHINA UNIV OF SCI & TECH
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