Three-dimensional accurate positioning method based on wireless sensor network

A wireless sensor network and precise positioning technology, applied in location-based services, wireless communication, network topology, etc., to achieve the effects of reducing uneven distribution, improving resource utilization, and enhancing network reliability and real-time performance

Inactive Publication Date: 2010-01-27
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the existing ground three-dimensional positioning system is based on two-dimensional positioning plus a floor or a relatively fixed height coordinate, and there is no positioning method that can directly calculate three-dimensional coordinates

Method used

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  • Three-dimensional accurate positioning method based on wireless sensor network
  • Three-dimensional accurate positioning method based on wireless sensor network
  • Three-dimensional accurate positioning method based on wireless sensor network

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Embodiment Construction

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and examples, but the embodiments of the present invention are not limited thereto.

[0030] In the present invention, the mobile node and the fixed node form a 2.4G wireless sensor network, the position of the fixed node remains unchanged, and its coordinates are obtained through the positioning system software configuration, and the coordinates of the mobile node are obtained by the signal strength value obtained by the fixed node and calculated with The distance between each fixed node, and then combine the three-dimensional coordinates of the fixed node to call the precise positioning algorithm to calculate the coordinates of the mobile node ( figure 1 ). The positioning system software running on the server platform and handheld terminal automatically searches the network, waits for the user to configure the fixed node, and calls the 3D building model or 3D m...

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Abstract

The invention relates to a three-dimensional accurate positioning method based on wireless sensor network. The method includes that a certain amount of fixed nodes are preset at places required to be positioned and coordinates X, Y and Z of each point are configured by positioning system software. Personnel or device required to be positioned is allocated with a mobile node, each mobile node is required to communicate with at least four nearby fixed nodes, the fixed node transmits radio signal strength received from the mobile node to the positioning system software by each node and gateway while the real-time coordinate of the mobile node is calculated by three-dimensional accurate positioning algorithm, then a three-dimensional building or cartographical model is imported, and a user can look up the position of the personnel or device by a remote PC, mobile phone or hand-held terminal. The invention realizes ad hoc network supported ground wireless three-dimensional accurate positioning system.

Description

technical field [0001] The invention relates to the field of wireless network communication, in particular to a three-dimensional precise positioning method based on a wireless sensor network. Background technique [0002] At present, there is a demand for wireless positioning of mobile devices and personnel in many fields such as mining, personnel monitoring, emergency rescue, and vehicle management. [0003] In recent years, mine collapses and gas explosion accidents have occurred frequently in our country, which have seriously affected the lives and property safety of the people. If the underground personnel are equipped with a three-digit precise positioning system, in the event of a mining accident, the exact location information can bring great help to the rescue work; in the emergency center, because a seriously ill patient is being rescued, a special However, we don’t know its specific location for a while. If each instrument is equipped with a wireless positioning ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/02H04W84/12H04W88/08
Inventor 周祖德任平李方敏刘泉方艺霖
Owner WUHAN UNIV OF TECH
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