A Target Tracking Method Based on Transmission Tree in Wireless Sensor Networks

A wireless sensor and target tracking technology, which is applied in the field of target tracking based on the transmission tree, can solve the problems of wireless sensor network energy loss increase and network life reduction, etc., to achieve the effect of reducing energy loss, reducing energy loss, and improving quality

Active Publication Date: 2020-07-14
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
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Problems solved by technology

[0004] At present, in the target tracking algorithm based on the transmission tree, it is rare to achieve 100% tree coverage, and with the movement of the transmission tree, nodes are constantly added and removed, and the transmission tree needs to be continuously constructed and reconfigured, so that the wireless sensor The energy loss of the network increases, resulting in a decrease in the lifetime of the entire network

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  • A Target Tracking Method Based on Transmission Tree in Wireless Sensor Networks
  • A Target Tracking Method Based on Transmission Tree in Wireless Sensor Networks
  • A Target Tracking Method Based on Transmission Tree in Wireless Sensor Networks

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Embodiment Construction

[0060] The present invention is described in further detail now in conjunction with accompanying drawing. The invention firstly proposes a system model of wireless sensor network. Assume that the wireless sensor network is composed of n sensor nodes uniformly deployed in an area, let the sensor nodes be n i , the relevant sensor node sequence is V={n 1 ,n 2 ,...,n i ,...,n N}, where |V|=N. The sensor nodes and the underlying network model are as follows:

[0061] 1) The sensors are randomly deployed in a certain area;

[0062] 2) There is a base station (that is, the data receiving end) away from the square sensing area;

[0063] 3) Both sensors and base stations are fixed after deployment;

[0064] 4) All nodes are isomorphic and have the same function;

[0065] 5) Each node is assigned a unique identifier (ID);

[0066] 6) Nodes can change their transmission range by changing transmission power as needed, that is, nodes have a variable communication radius;

[006...

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Abstract

The invention discloses a target tracking method based on a transmission tree in a wireless sensor network. When the target is close enough to the boundary of the coverage area, the execution node joins the algorithm to form an initial tree, and one of the nodes close to the target is selected as a temporary root; each A node that perceives a target uses fuzzy inference rules to find its fuzzy distance from the target; a node entering from a "very far" region to a "far" region executes a node joining algorithm and then transmits the tree for reconfiguration; in order to make the root as close as possible to target, the algorithm selects a node from the "very near" zone as the permanent root; the temporary root will broadcast its state when it moves away from the target and changes zones; this information is broadcast when declared as a new temporary root, and each existing node updates its database, The old temporary root has the new root set as its parent. The transmission tree of the invention is established around the target in the coverage area, can realize 100% coverage, and improves the accuracy of information acquisition.

Description

technical field [0001] The invention belongs to the field of wireless sensor networks, and relates to a method for tracking a target based on a transmission tree in a wireless sensor network. Background technique [0002] Wireless sensor networks (Wireless Sensor Networks, WSNs) are composed of a large number of cheap miniature sensor nodes deployed in the coverage area. These nodes have communication and computing capabilities, and form an ad hoc network system through multi-hop wireless communication. Real-time perception, collection and processing of information about the environment or monitoring objects within the network, and transmit the processed information to interested network end users. As an emerging hot field, wireless sensor network has attracted increasing attention from the global academic and industrial circles with its advanced concepts and broad application prospects. As one of the IT technologies, its broad application prospects have attracted worldwide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/38H04W4/029H04W84/18
CPCH04W4/02H04W84/18
Inventor 陆音张志浩
Owner NANJING UNIV OF POSTS & TELECOMM
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