Wireless sensor network intelligent correction ranging and positioning method
A wireless sensor and network intelligence technology, applied in radio wave measurement systems, positioning, instruments, etc., can solve the problems of many iterations of related intelligent algorithms and low positioning accuracy, so as to reduce energy consumption, prolong life cycle, and reduce complexity. Effect
Inactive Publication Date: 2018-05-29
TAIYUAN UNIV OF TECH
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Problems solved by technology
[0004] The invention solves the problems of low positioning accuracy of existing algorithm technology and many iterations of related intelligent algorithms, and provides a wireless sensor network intelligent correction ranging positioning method
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[0044] The wireless sensor network intelligent correction ranging positioning method is realized by the following steps:
[0045] Z1: The unknown node P receives the signal of the surrounding beacon nodes, and converts the received signal strength value into the distance value between the unknown node and the beacon node; the conversion here uses the well-known logarithmic-constant wireless signal propagation model.
[0046] Z2: Set the number of beacon nodes that the unknown node P receives signals to be m, where m≧3, and any three beacon nodes that are not collinear as a group, a total of k groups;
[0047] Z3: From the first group of beacon nodes to the kth group of beacon nodes, the coordinates of the unknown node P are calculated sequentially, and a total of k coordinates are obtained, which are expressed as (x p1 ,y p1 ),...(x pk ,y pk ). Select the uth group of beacon nodes, where u ranges from 1 to k, set the group of beacon nodes as A, B, and C, and calculate the ...
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The invention relates to a wireless sensor network positioning technology, specifically relates to a wireless sensor network intelligent correction range finding positioning method and solves the problems of the prior art that the positioning precision is low and the algorithm is complex. The method is characterized in that firstly, an area value is utilized to determine the relative positions of an unknown node and a beacon node, the method for coefficients TA, TB, TC and area relations is established, and the coordinate value optimization is carried out on coordinates of the unknown node P; and secondly, a crowd search algorithm (SOA) is utilized to further optimize obtained coordinate values. By means of simulation analysis and comparison with other algorithm, the wireless sensor network intelligent correction range finding positioning method has the advantages that the precision of the algorithm is improved, the complexity of the algorithm is lowered, the energy consumption of the node is reduced, and the life period of the node is prolonged.
Description
technical field [0001] The invention relates to a wireless sensor network positioning technology, in particular to a wireless sensor network intelligent correction ranging positioning method. It is mainly used in wireless sensor networks to obtain accurate location information of sensor nodes. Background technique [0002] In recent years, the Internet of Things technology has continuously achieved new results, and has been applied to the fields of national defense, military, environmental monitoring, traffic management, medical and health care, manufacturing, disaster relief, etc. As one of the underlying technologies of the Internet of Things, wireless sensor networks have become a research area. hotspot. Among them, obtaining accurate location information through positioning algorithms is a very important content of wireless sensor networks. [0003] The intelligent algorithm has recently received high attention and is used to optimize the original algorithm, such as us...
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IPC IPC(8): G01S5/02G01S5/10G01S11/06
CPCG01S5/02G01S5/10G01S11/06
Inventor 乔学工曹建王华倩李瑞莲武娟萍
Owner TAIYUAN UNIV OF TECH