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Blind RSSD-Based Indoor Localization with Confidence Calibration and Energy Control

Indoor localization based on wireless sensor networks (WSNs) is an important field of research with numerous applications, such as elderly care, miner security, and smart buildings. In this paper, we present a localization method based on the received signal strength difference (RSSD) to determine a...

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Detalles Bibliográficos
Autores principales: Zou, Tengyue, Lin, Shouying, Li, Shuyuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4934214/
https://www.ncbi.nlm.nih.gov/pubmed/27258272
http://dx.doi.org/10.3390/s16060788
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author Zou, Tengyue
Lin, Shouying
Li, Shuyuan
author_facet Zou, Tengyue
Lin, Shouying
Li, Shuyuan
author_sort Zou, Tengyue
collection PubMed
description Indoor localization based on wireless sensor networks (WSNs) is an important field of research with numerous applications, such as elderly care, miner security, and smart buildings. In this paper, we present a localization method based on the received signal strength difference (RSSD) to determine a target on a map with unknown transmission information. To increase the accuracy of localization, we propose a confidence value for each anchor node to indicate its credibility for participating in the estimation. An automatic calibration device is designed to help acquire the values. The acceleration sensor and unscented Kalman filter (UKF) are also introduced to reduce the influence of measuring noise in the application. Energy control is another key point in WSN systems and may prolong the lifetime of the system. Thus, a quadtree structure is constructed to describe the region correlation between neighboring areas, and the unnecessary anchor nodes can be detected and set to sleep to save energy. The localization system is implemented on real-time Texas Instruments CC2430 and CC2431 embedded platforms, and the experimental results indicate that these mechanisms achieve a high accuracy and low energy cost.
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spelling pubmed-49342142016-07-06 Blind RSSD-Based Indoor Localization with Confidence Calibration and Energy Control Zou, Tengyue Lin, Shouying Li, Shuyuan Sensors (Basel) Article Indoor localization based on wireless sensor networks (WSNs) is an important field of research with numerous applications, such as elderly care, miner security, and smart buildings. In this paper, we present a localization method based on the received signal strength difference (RSSD) to determine a target on a map with unknown transmission information. To increase the accuracy of localization, we propose a confidence value for each anchor node to indicate its credibility for participating in the estimation. An automatic calibration device is designed to help acquire the values. The acceleration sensor and unscented Kalman filter (UKF) are also introduced to reduce the influence of measuring noise in the application. Energy control is another key point in WSN systems and may prolong the lifetime of the system. Thus, a quadtree structure is constructed to describe the region correlation between neighboring areas, and the unnecessary anchor nodes can be detected and set to sleep to save energy. The localization system is implemented on real-time Texas Instruments CC2430 and CC2431 embedded platforms, and the experimental results indicate that these mechanisms achieve a high accuracy and low energy cost. MDPI 2016-05-31 /pmc/articles/PMC4934214/ /pubmed/27258272 http://dx.doi.org/10.3390/s16060788 Text en © 2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zou, Tengyue
Lin, Shouying
Li, Shuyuan
Blind RSSD-Based Indoor Localization with Confidence Calibration and Energy Control
title Blind RSSD-Based Indoor Localization with Confidence Calibration and Energy Control
title_full Blind RSSD-Based Indoor Localization with Confidence Calibration and Energy Control
title_fullStr Blind RSSD-Based Indoor Localization with Confidence Calibration and Energy Control
title_full_unstemmed Blind RSSD-Based Indoor Localization with Confidence Calibration and Energy Control
title_short Blind RSSD-Based Indoor Localization with Confidence Calibration and Energy Control
title_sort blind rssd-based indoor localization with confidence calibration and energy control
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4934214/
https://www.ncbi.nlm.nih.gov/pubmed/27258272
http://dx.doi.org/10.3390/s16060788
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