System and method for accurately positioning wireless sensor network

A wireless sensor, precise positioning technology, applied in the field of communication, can solve the problems of high cost, low positioning accuracy and low scalability

Inactive Publication Date: 2012-07-11
SHANGHAI QIHUI TELECOM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The purpose of the embodiments of the present invention is to solve the problems existing in the above-mentioned background technology, and propose a wireless sensor network precise...

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  • System and method for accurately positioning wireless sensor network
  • System and method for accurately positioning wireless sensor network
  • System and method for accurately positioning wireless sensor network

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Embodiment Construction

[0055] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0056] A wireless sensor network precise positioning system, said system comprising:

[0057] One or more positioned targets, the positioned target includes an identification card for information interaction with one or more wireless card readers installed in the wireless card reader base station, using the bilateral two-way distance measurement algorithm SDS-TWR Measure the relative distance of each relative to each wireless card reader;

[0058] The server is configured to calculate and determine the coordinate position of each identification card by using a semidefinite programming algorithm according to the above relative distance.

[0059] Further preferably, the identification card specifically includes:

[0060] The power management part is used for charging management and / or power safety management;

[0061] The radio frequency control part, includ...

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Abstract

The embodiment of the invention discloses a system and a method for accurately positioning a wireless sensor network and is applied to the field of communication. The system comprises one or more positioned objects and a server, wherein each positioned object comprises an identification card used for performing information interaction with one or more wireless card readers which are arranged in a wireless card reading base station; respective relative distance relative to each wireless card reader is measured by using a symmetrical double-sided two-way ranging (SDS-TWR) algorithm; and the server is used for calculating and determining a coordinate position of each identification card by using a semidefinite programming algorithm according to the relative distance. Due to the SDS-TWR positioning technology and the semidefinite programming algorithm, the system has the advantages of high stability, high positioning accuracy, high operating rate and high expandability, is applicable to indoor accurate positioning, such as accurate positioning for underground coal mines, prison staff, commercial building personnel and assets and the like, and is also applicable to outdoor positioning, such as positioning in intelligent vehicle management, outdoor security patrol and the like.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a wireless sensor network precise positioning system and method. Background technique [0002] In recent years, the demand for accurate positioning has been increasing. Although GPS can obtain good positioning accuracy, in indoor environments, the GPS signal attenuates greatly, making it impossible to perform accurate positioning. In addition, GPS is also easily affected by external factors such as weather outdoors. Therefore, in situations where GPS cannot be positioned, other technical solutions need to be used instead of GPS, such as indoor precise positioning. The indoor positioning market has a large demand, and typical applications include precise positioning in coal mines, prison personnel positioning, and personnel asset positioning in specific buildings. [0003] Taking the coal mine underground personnel positioning system as an example, it should be able to tim...

Claims

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Application Information

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IPC IPC(8): H04W64/00H04W84/18
Inventor 高细见杨亚雄杨亚齐汪启军金辉叶荫宇
Owner SHANGHAI QIHUI TELECOM TECH
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