Wireless sensor network positioning system facing to three dimensional space

Abstract

The present invention discloses a system for locating wireless sensor network based on 3D space, which comprises of multiple TelosB sensor nodes, Sink nodes and user end. Wherein, each TelosB node, and each TelosB node to each Sink node are communicated by wireless type, Sink nodes and user end can communicate by Internet or USB interface. In the 3D self-localization of random target nodes Mb in wireless sensor network, location region P is screened by judging whether the random target point Mb is located in the tetrahedron formed of random four visual anchor nodes, and barycenter set of all location region P are calculated and the average coordinate value of all elements in barycenter set G is looked as coordinate location of target nodes Mb in wireless sensor network. The all orientation resolution of 3D self-localization of present invention is processed on single sensor node, so the method of present invention is a distributing orientation method.

Description

technical field [0001] The present invention relates to the field of wireless sensor networks, more particularly, refers to a three-dimensional space-oriented wireless sensor network positioning system. Background technique [0002] In recent years, with the maturity of wireless communication technology, wireless sensor networks have been widely used in various production and life. However, in wireless sensor network applications that rely on location information, only by mastering the specific location information of sensor nodes can the actual meaning of the sensory data be clarified. At present, the location of sensor nodes in the network area is only limited to two-dimensional space for node positioning, while wireless sensor networks deployed in three-dimensional space have more abundant location information than wireless sensor networks in two-dimensional space, and The network scale and distribution density have also increased. The existing two-dimensional positionin...

AI Technical Summary

Problems solved by technology

At present, the location of sensor nodes in the network area is only limited to two-dimensional space for node positioning, while wireless sensor networks deployed in three-dimensional space have more abundant location information than wireless sensor networks in two-dimensional space, and The network scale and distribution density have also increased. The existing two-dimensional positioning system is limited by power consumption and cost, and it is difficult to be extended to the actual three-dimensional space application. Therefore, it is necessary to design and adopt a new three-dimensional space-oriented wireless sensor network. GPS

However, because traditional wireless network systems generally use expensive wireless communication and time synchronization equipment, they are not suitable for low-cost, low-power wireless sensor networks, so sensor nodes must have their own positioning capabilities

Secondly, mobile nodes are required to collect information in monitoring applications. A wireless sensor network system composed entirely of stationary nodes can no longer meet the requirements. It is necessary to introduce a positioning method for wireless sensor networks containing mobile nodes.

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