Drifting detection method of distributed beacon nodes in wireless sensor network

A wireless sensor and beacon node technology, applied in wireless communication, electrical components, etc., can solve the problems of inability to take into account computing speed and result accuracy, high communication overhead, and low communication overhead, and achieves both computing speed and low communication overhead. Taking into account the effect of result accuracy

Active Publication Date: 2013-04-24
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0005] In order to overcome the shortcomings of the existing detection method of beacon node drift in the wireless sensor network, which has a large communication overhead and cannot take into account the calculation speed and result accuracy, the present invention provides a wireless sensor network with a small communication cost and a balance between calculation speed and result accuracy Distributed Beacon Node Drift Detection Method in China

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  • Drifting detection method of distributed beacon nodes in wireless sensor network
  • Drifting detection method of distributed beacon nodes in wireless sensor network
  • Drifting detection method of distributed beacon nodes in wireless sensor network

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] refer to Figure 1 ~ Figure 4 , a distributed beacon node drift detection method in a wireless sensor network, which is used to determine whether the beacon node drifts;

[0030] Each beacon node scores itself according to a given scoring mechanism, and then negotiates with surrounding beacon nodes using a given negotiation mechanism, and finally determines itself as a drifting or non-drifting beacon node. Such as figure 1 , the beacon node workflow is as follows:

[0031] (1) The number of iterations c is set to 0. At the time of networking, the beacon node sends a HELLO packet to the neighbor beacon node. For the format of the HELLO packet, see figure 2 , execute step (2);

[0032] (2) The beacon node gets the HELLO packet sent by the neighbor beacon node, according to the formula record RSSI row vector;

[0033] In the formula, 0ij(t) Indicates the beac...

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Abstract

The invention discloses a drifting detection method of distributed beacon nodes in a wireless sensor network. The drifting detection method of the distributed beacon nodes in the wireless sensor network comprises a scoring mechanism and a negotiation mechanism which are adopted by each beacon node, wherein the scoring mechanism observes based on signal strength among the beacon nodes, and the negotiation mechanism detects drifting among the beacon nodes. In the aspect of the scoring mechanism, by mutually observing changes of received signal strength indication (RSSI) between each beacon node through the each beacon node, changed row vectors of the RSSI and unchanged row vectors of the RSSI are calculated by the scoring mechanism, and then scoring is conducted by the scoring mechanism; and in the aspect of the negotiation mechanism, scoring results are mutually informed by neighbor beacon nodes, each beacon node adjusts self-scoring-results according to scoring results of the neighbor beacon nodes, and finally adjusts whether the each beacon node drifts or not according to final scoring results. The drifting detection method of the distributed beacon nodes in the wireless sensor network is low in communication overhead, and gives consideration to arithmetic speeds and result precision.

Description

technical field [0001] The invention relates to a detection method for beacon node drift in a wireless sensor network. Background technique [0002] The positioning technology in the wireless sensor network generally calculates the geographical coordinates of the nodes automatically through the information exchange and collaborative processing between the nodes. In the positioning process, there are generally two types of nodes: one is a small number of known geographical location information, called beacon nodes (Beacon), which can obtain their own location information through manual layout and measurement; the other One is a large number of unknown geographical location information, called unknown nodes or nodes to be located. The self-location of wireless sensor network nodes needs to determine the geographic location of unknown nodes according to a certain positioning mechanism based on a small number of beacon nodes with known locations. [0003] Localization has attr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/08H04W64/00
Inventor 夏明陈庆章金言黄昊程
Owner ZHEJIANG UNIV OF TECH
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